SLIDE FASTENER

Abstract

A slide fastener includes: a first slide fastener member and a second slide fastener member. The first slide fastener member includes a first cloth tape, a first element row, a slider, and a retainer pin member. The second slide fastener member includes a second cloth tape, a second element row, and a separable pin member. When the retainer pin member and the separable pin member are engaged with each other, a slider accommodating area is formed. An inclined protrusion is provided on a retainer pin arm. When the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the inclined protrusion abuts against an outer peripheral side of the slider and drives the slider to be inclined toward the separable pin member.

Claims

1. A slide fastener, comprising: a first slide fastener member and a second slide fastener member that are separable, wherein the first slide fastener member includes a first cloth tape, a first element row fixed on an inner edge of the first cloth tape, a slider movably attached to the first element row in a length direction of the slide fastener, and a retainer pin member fixed on the inner edge of the first cloth tape and disposed at an end of the first element row, the slider includes an upper blade and a lower blade disposed facing each other and connected to each other along a thickness direction of the slide fastener, and the upper blade and the lower blade are respectively provided with an upper flange and a lower flange protruding toward each other, and the retainer pin member includes a retainer pin main body and a retainer pin arm extending from the retainer pin main body toward the first element row, the second slide fastener member includes a second cloth tape, a second element row fixed on an inner edge of the second cloth tape, and a separable pin member fixed on the inner edge of the second cloth tape and disposed at an end of the second element row, and the separable pin member includes a separable pin main body, a separable pin arm extending from the separable pin main body toward the second element row, and a half element fixed to the separable pin main body and adjacent to the second element row, the retainer pin member and the separable pin member are rotatably engageable and are separable with respect to each other, and when the retainer pin member and the separable pin member are engaged with each other, a slider accommodating area which is enclosed by the retainer pin main body, the retainer pin arm and the separable pin arm and which is capable of accommodating the slider, is formed, an inclined protrusion protruding toward the slider accommodating area is provided on a side surface of the retainer pin arm facing the slider accommodating area, a flange passage is formed between the half element and the separable pin arm, and the flange passage is a part of the slider accommodating area and allows the upper flange and the lower flange of the slider on a side of the separable pin arm to pass therethrough, and when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the inclined protrusion abuts against an outer peripheral side of the slider and drives the slider to be inclined toward the separable pin member.

2. The slide fastener according to claim 1, wherein a recess recessed away from the flange passage is provided at an outer periphery of one end of the half element away from the second element row, and the recess is in communication with the flange passage, and when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the upper flange and/or the lower flange and the recess are disposed in sequence along a moving direction of the slider when the slide fastener is closed, and an end of the upper flange and/or an end of the lower flange is capable of abutting against the recess.

3. The slide fastener according to claim 2, wherein the half element has the recess on each of both a front surface and a back surface thereof, the recess on the front surface of the half element is capable of abutting against the end of the upper flange, and the recess on the back surface of the half element is capable of abutting against the end of the lower flange.

4. The slide fastener according to claim 2, wherein an outer peripheral contour of the recess includes a plurality of recessed inclined surfaces, and the plurality of recessed inclined surfaces are sequentially connected along the length direction of the slide fastener.

5. The slide fastener according to claim 4, wherein slopes of the plurality of recessed inclined surfaces with respect to a central axis extending in the length direction of the slide fastener gradually increase.

6. The slide fastener according to claim 4, wherein three of the recessed inclined surfaces are provided, the three of recessed inclined surfaces are a first inclined surface, a second inclined surface and a third inclined surface sequentially connected along the length direction of the slide fastener, respectively, and the first inclined surface and an outer peripheral surface of the half element, as well as the third inclined surface and the outer peripheral surface of the half element are connected via arc segments.

7. The slide fastener according to claim 1, wherein when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, an inclination angle at which the inclined protrusion drives the slider to be inclined toward the separable pin member is 20 to 25.

8. The slide fastener according to claim 1, wherein when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, a gap is formed between the slider and a part of the retainer pin arm other than the inclined protrusion.

9. The slide fastener according to claim 1, wherein the retainer pin member further includes a first magnet fixed in the retainer pin main body, the separable pin member further includes a second magnet fixed in the separable pin main body, and the first magnet and the second magnet are configured to generate a magnetic attraction force that enables the retainer pin member and the separable pin member to rotate toward each other.

10. The slide fastener according to claim 1, wherein a reinforcing rib is fixed on a surface of the upper blade on a side of the separable pin member.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a schematic structural diagram where a slide fastener in the present application is closed.

[0026] FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1.

[0027] FIG. 3 is a front view illustrating a slider in FIG. 1 moving into a slider accommodating area along a length direction of the slide fastener.

[0028] FIG. 4 is a schematic structural diagram where the slide fastener in the present application is opened.

[0029] FIG. 5 is a front view illustrating a state where a retainer pin member, a separable pin member and the slider in FIG. 3 are started to be assembled.

[0030] FIG. 6 is a rear view of FIG. 5.

[0031] FIG. 7 is a schematic structural diagram of the retainer pin member in the present application from a different perspective.

[0032] FIG. 8 is a schematic structural diagram of the retainer pin member in the present application from a different perspective.

[0033] FIG. 9 is a schematic structural diagram of the retainer pin member in the present application from a different perspective.

[0034] FIG. 10 is a schematic structural diagram of the slider in the present application from a different perspective.

[0035] FIG. 11 is a schematic structural diagram of the slider in the present application from a different perspective.

[0036] FIG. 12 is a schematic structural diagram of the separable pin member in the present application from a different perspective.

[0037] FIG. 13 is a schematic structural diagram of the separable pin member in the present application from a different perspective.

[0038] FIG. 14 is a schematic structural diagram of the separable pin member in the present application from a different perspective.

[0039] FIG. 15 is a schematic structural diagram of a half element in FIG. 12.

DESCRIPTION OF EMBODIMENTS

[0040] Embodiments of the present invention will be described below with specific embodiments. Those skilled in the art could easily understand other advantages and effects of the present invention from contents disclosed in the present description.

[0041] It should be noted that structures, proportions, sizes, and the like shown in the drawings of the present description are merely for the understanding and reading of those skilled in the art, in combination with the contents disclosed in the present description, and are not used to limit the conditions under which the present invention can be implemented, and therefore have no technical substantive significance. Any structural modifications, changes in proportions, or size adjustments should still fall within the scope of the technical content disclosed in the present invention, as long as they do not affect the effects and objects of the present invention. At the same time, terms such as upper, lower, left, right, intermediate and one referred to in the present description are merely for the convenience of description and are not used to limit the scope within which the present invention can be implemented, and changes or adjustments of relative relations are also considered to be within the scope within which the present invention can be implemented, as long as there is no substantial technical change.

[0042] It should also be noted that when an element is referred to as being fixed to or disposed on another element, the element may be directly fixed to the other element or may be directly disposed on the other element, or there may be an intermediate element at the same time. When an element is referred to as being connected to another element, the element may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0043] In addition, descriptions related to first, second, and the like in the present application are merely used for description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined with first and second may explicitly or implicitly include at least one of these features. In addition, technical solutions in various embodiments may be combined, but only if those skilled in the art can implement these embodiments. When the combination of the technical solutions appears to be contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope claimed by the present application.

[0044] As illustrated in FIG. 1, the present application provides a slide fastener including a slider 30. For convenience of description, in the following embodiments, directions are defined as follows. A length direction of the slide fastener is defined as a front-rear direction, a width direction of the slide fastener is defined as a left-right direction, and a thickness direction of the slide fastener is defined as an upper-lower direction. A front direction is a moving direction of the slider 30 when the slide fastener is closed, and a rear direction is a moving direction of the slider 30 when the slide fastener is opened. Based on this, in the view shown in FIG. 1, an upper side and a lower side of the paper are the front direction and the rear direction, respectively, a left side and a right side of the paper are a left direction and a right direction, respectively, and a front side and a back side of the paper are an upper direction and a lower direction, respectively.

[0045] As illustrated in FIGS. 1 to 4, the slide fastener according to the present application includes a first slide fastener member 100 and a second slide fastener member 200 that are separable, the first slide fastener member 100 is disposed on the left side, and the second slide fastener member 200 is disposed on the right side.

[0046] As illustrated in FIGS. 3 and 4, the first slide fastener member 100 includes a first cloth tape 10, a first element row 20 fixed to an inner edge of a right side of the first cloth tape 10, a slider 30 movably attached to the first element row 20 along the length direction of the slide fastener, and a retainer pin member 40 fixed to the inner edge of the right side of the first cloth tape 10. The first element row 20 includes a plurality of elements disposed side by side along the length direction of the slide fastener, and the retainer pin member 40 is disposed at an end of the first element row 20, that is, a rear end, along a length direction of the first element row 20. As illustrated in FIGS. 10 and 11, the slider 30 includes an upper blade 31 and a lower blade 32 disposed facing each other and connected to each other along the thickness direction of the slide fastener, a connecting column 36 connected between the upper blade 31 and the lower blade 32, an attachment column 37 fixed on an upper surface of the upper blade 31, and a pull tab 38 rotatably attached to the attachment column 37. A user can conveniently pull the slider 30 forward or backward by holding the pull tab 38. At the same time, a left edge and a right edge of the upper blade 31 are both provided with an upper flange 33 protruding downward, and a left edge and a right edge of the lower blade 32 are both provided with a lower flange 34 protruding upward. The upper flanges 33 and the lower flanges 34 protrude toward each other in the upper-lower direction. An element guide passage 39 passing through the front and rear is formed between the upper blade 31, the lower blade 32 and the connecting column 36 of the slider 30, and a front end opening of the element guide passage 39 is a shoulder opening of the slider 30. The connecting column 36 is disposed at front end sides of the upper blade 31 and the lower blade 32, and the element guide passage 39 passes through an area between the upper blade 31 and the lower blade 32 and located at a rear side of the connecting column 36 in the left-right direction, that is, the rear side of the connecting column 36 is a hollow area for the retainer pin member 40 to be engaged with a separable pin member 70 to be described later. As illustrated in FIGS. 7 to 9, the retainer pin member 40 includes a retainer pin main body 41 and a retainer pin arm 42 extending forward from a left side of the retainer pin main body 41 toward the first element row 20. The retainer pin arm 42 is disposed on a left side of the first element row 20 along the width direction of the slide fastener, in other words, the retainer pin arm 42 is disposed outward with respect to the first element row 20.

[0047] As illustrated in FIGS. 3 and 4, the second slide fastener member 200 includes a second cloth tape 50, a second element row 60 fixed on an inner edge of a left side of the second cloth tape 50, and a separable pin member 70 fixed on the inner edge of the left side of the second cloth tape 50. The second element row 60 also includes a plurality of elements disposed side by side along the length direction of the slide fastener, and the separable pin member 70 is disposed at an end of the second element row 60, that is, a rear end, along a length direction of the second element row 60. As illustrated in FIGS. 12 to 14, the separable pin member 70 includes a separable pin main body 71, a separable pin arm 72 extending forward from a right side of the separable pin main body 71 toward the second element row 60, and a half element 73 fixed to the separable pin main body 71 and adjacent to the second element row 60. The separable pin arm 72 is disposed on a right side of the second element row 60 along the width direction of the slide fastener, in other words, the separable pin arm 72 is disposed outward with respect to the second element row 60. The half element 73 is disposed at a front end of the separable pin member 70 and disposed behind the rearmost element in the second element row 60, and a flange passage 74 is formed between the half element 73 and the separable pin arm 72.

[0048] In the above slide fastener, the retainer pin member 40 and the separable pin member 70 constitute a separation insert of the slide fastener, and the retainer pin member 40 and the separable pin member 70 are rotatably engageable and separable. The slide fastener illustrated in FIG. 1 is in a closed state, the elements in the first element row 20 are engaged with the elements in the second element row 60, and the retainer pin member 40 is engaged with the separable pin member 70. At this time, the retainer pin main body 41, the retainer pin arm 42 and the separable pin arm 72 enclose a slider accommodating area 80, the slider accommodating area 80 can accommodate the slider 30, and the flange passage 74 of the separable pin member 70 is a part of the slider accommodating area 80.

[0049] When the slide fastener illustrated in FIG. 1 needs to be opened, the user pulls the slider 30 backward by holding the pull tab 38 until the slider 30 is pulled backward to abut against the retainer pin member 40, as illustrated in FIG. 3. At this time, the slider 30 is located in the slider accommodating area 80. In this process, the upper flange 33 and the lower flange 34 on a right side of the slider 30 pass backward through the flange passage 74 of the separable pin member 70. Then, the retainer pin member 40 and the separable pin member 70 are rotated away from each other. When the separable pin member 70 is moved out of the element guide passage 39 of the slider 30, the retainer pin member 40 and the separable pin member 70 can be separated up and down, and the slide fastener is separated into the first slide fastener member 100 and the second slide fastener member 200, as illustrated in FIG. 4.

[0050] When the slide fastener illustrated in FIG. 4 needs to be closed, the retainer pin member 40 and the separable pin member 70 are first abutted against each other, the slider 30 is pulled backward to abut against the retainer pin member 40, and the retainer pin member 40 and the separable pin member 70 are rotated toward each other until a left end of the separable pin member 70 enters the element guide passage 39 of the slider 30 from the right side of the slider 30. Thus, the retainer pin member 40 and the separable pin member 70 are engaged with each other, as illustrated in FIG. 3. At this time, the slider 30 is located in the slider accommodating area 80. Thereafter, when the user pulls the slider 30 forward by holding the pull tab 38, the slider 30 is pulled forward out of the slider accommodating area 80, and the upper flange 33 and the lower flange 34 on the right side of the slider 30 pass forward through the flange passage 74 of the separable pin member 70. As the slider 30 moves forward, the elements of the first element row 20 and the elements of the second element row 60 passing through the element guide passage 39 of the slider 30 are engaged with each other, the half element 73 is disposed behind the rearmost element in the first element row 20, and the half element 73 engages with the first element row 20, as illustrated in FIG. 1.

[0051] Therefore, in the above slide fastener, the rightward rotation of the retainer pin member 40 and the leftward rotation of the separable pin member 70 refer to an engagement direction, and the leftward rotation of the retainer pin member 40 and the rightward rotation of the separable pin member 70 refer to a disengagement direction.

[0052] In particular, as illustrated in FIGS. 7 and 9, a right side surface of the retainer pin arm 42 facing the slider accommodating area 80 is provided with an inclined protrusion 421 protruding rightward toward the slider accommodating area 80. When the retainer pin member 40 and the separable pin member 70 are engaged with each other and the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, as illustrated in FIGS. 3, 5 and 6, the inclined protrusion 421 abuts against an outer peripheral side of a left side of the slider 30. Under the action of the abutment of the inclined protrusion 421, the entire slider 30 is inclined toward the separable pin member 70, that is, the slider 30 is inclined to the right, and the shoulder opening of the slider 30 is also inclined to the right. The rightward inclination of the slider 30 means the followings. As illustrated in FIG. 3, the retainer pin member 40 has a first central axis S extending along a length direction thereof, and the first central axis S extends forward and backward and is a central axis extending along the length direction of the slide fastener. The slider 30 has a second central axis W extending along a length direction thereof, and the second central axis W of the slider 30 is inclined to the right with respect to the first central axis S of the retainer pin member 40. An acute angle is formed between the second central axis W and the first central axis S, and the acute angle is also an inclination angle at which the slider 30 is inclined to the right toward the separable pin member 70. This structure has the following advantages.

[0053] When the slide fastener needs to be closed, the slider 30 is first pulled to the end of the first element row 20 on the first slide fastener member 100 such that the slider 30 abuts against the retainer pin member 40. Then, the separable pin member 70 and the retainer pin member 40 rotate toward each other and engage with each other, as illustrated in FIGS. 3 and 5. At this time, the retainer pin arm 42 and the retainer pin arm 72 are respectively disposed on the left side and the right side of the slider 30, the slider 30 is just located in the slider accommodating area 80, and the slider 30 is inclined to the right toward the separable pin arm 70. After the user pulls the slider 30 forward by holding the pull tab 38 to pull the slider 30 forward out of the slider accommodating area 80, as illustrated in FIG. 1, the first element row 20 and the second element row 60 passing through the slider 30 are engaged with each other, and the slider 30 engaged with the first element row 20 and the second element row 60 is restored to a straight and non-inclined state, that is, at this time, the second central axis W of the slider 30 is parallel to the first central axis S of the retainer pin member 40, and both the second central axis W and the first central axis S extend straight forward and backward. Therefore, in the process of pulling the slider 30 forward out of the slider accommodating area 80, the slider 30 is switched from a state of being inclined toward the separable pin member 70 to a state of not being inclined, that is, the slider 30 turns to the left toward the retainer pin member 40 by an angle, and the upper flange 33 and the lower flange 34 on the right side of the slider 30 pass through the flange passage 74 of the separable pin member 70 in this process. Further, in this process, the slider 30 drives the separable pin member 70 to turn to the left toward the retainer pin member 40, the rotation direction of the separable pin member 70 turning to the left is the engagement direction, and thus the separable pin member 70 and the retainer pin member 40 are engaged with each other. In this way, when the slide fastener is closed, even if the slider 30 is pulled up in the disengagement direction, the engagement of the separable pin member 70 and the retainer pin member 40 will not be released, which effectively prevents the idling of separable pin member 70 or the retainer pin member 40 in the disengagement direction, ensures that the separable pin member 70 and the retainer pin member 40 are engaged with each other when the slide fastener is closed, ensures the success rate of the slide fastener closing operation, and improves the use experience of the slide fastener.

[0054] Further, as illustrated in FIGS. 3, 5 and 6, when the retainer pin member 40 and the separable pin member 70 are engaged with each other and the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, the inclination angle at which the inclined protrusion 421 drives the slider 30 to be inclined toward the separable pin member 70 is 20 to 25, particularly preferably 22. In this way, at the beginning of the engagement of the retainer pin member 40 and the separable pin member 70, the slider 30 can be prevented from being excessively inclined toward the separable pin member 70, thereby preventing the separable pin member 70 from excessively moving away from the retainer pin member 40, and ensuring that the separable pin member 70 and the retainer pin member 40 can be better engaged with each other subsequently. In addition, as illustrated in FIG. 7, the inclined protrusion 421 on the right side surface of the retainer pin arm 42 is triangular. When the inclined protrusion 421 abuts against an outer peripheral surface of the left side of the slider 30, the inclined protrusion 421 can drive the slider 30 to be inclined to the right and make a contact area between the inclined protrusion 421 and the slider 30 smaller, thereby reducing the friction between the inclined protrusion 421 and the slider 30, making it easier to pull the slider 30 forward out of the slider accommodating area 80 and to pull the slider 30 backward into the slider accommodating area 80.

[0055] Further, as illustrated in FIGS. 3, 5 and 6, when the retainer pin member 40 and the separable pin member 70 are engaged with each other and the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, a gap 43 is formed between the slider 30 and a part of the retainer pin arm 42 other than the inclined protrusion 421. The gap 43 penetrates up and down, and the gap 43 is formed on both upper and lower sides of the inclined protrusion 421.

[0056] The gap 43 greatly reduces the contact area between the retainer pin arm 42 and the slider 30, and thus greatly reduces the friction between the retainer pin arm 42 and the slider 30. In this way, when the slide fastener is opened, the slider 30 can be easily pulled backward into the slider accommodating area 80 at the rear ends of the first element row 20 and the second element row 60. When the slide fastener is closed, the slider 30 can also be easily pulled forward out of the slider accommodating area 80.

[0057] Further, as illustrated in FIGS. 12 to 15, an outer periphery of a right rear end of the half element 73 away from the second element row 60 is provided with a recess 731 recessed away from the flange passage 74. Since the recess 731 is formed on the outer peripheral side of the right rear end of the half element 73, the recess 731 is in communication with the flange passage 74. When the retainer pin member 40 and the separable pin member 70 are engaged with each other and the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, as illustrated in FIG. 5, the upper flange 33 and/or the lower flange 34 on the right side of the slider 30 and the recess 731 are disposed in sequence along the moving direction of the slider 30 when the slide fastener is closed, that is, the upper flange 33 and/or the lower flange 34 on the right side of the slider 30 are disposed behind the recess 731.

[0058] In the process of closing the slide fastener by pulling the slider 30 forward out of the slider accommodating area 80, the upper flange 33 and the lower flange 34 on the right side of the slider 30 may directly pass forward through the flange passage 74 on the outer peripheral side of the half element 73 without colliding with the half element 73, or the upper flange 33 and the lower flange 34 on the right side of the slider 30 may collide with the half element 73 first, and then pass forward through the flange passage 74. When front ends of the upper flange 33 and the lower flange 34 collide with the half element 73, the front end of the upper flange 33 and/or the lower flange 34 abuts against the recess 731 at the right rear end of the half element 73, an outer peripheral contour of the recess 731 recessed away from the flange passage 74 surrounds an outer periphery of the front end of the upper flange 33 and/or the lower flange 34, and the recess 731 support the front end of the upper flange 33 and/or the lower flange 34. This structure plays the following role. On the one hand, since the front end of the upper flange 33 and/or the lower flange 34 abuts against the recess 731 at the right rear end of the half element 73, the half element 73 is limited from rotating to the right in the disengagement direction, thereby achieving the object of limiting the separable pin member 70 from rotating to the right in the disengagement direction. On the other hand, when the slider 30 is subsequently forced to make the upper flange 33 and/or the lower flange 34 pass through the outer periphery of the half element 73, the upper flange 33 and/or the lower flange 34 drives the half element 73 to rotate to the left toward the retainer pin member 40, thereby further driving the separable pin member 70 to rotate to the left toward the retainer pin member 40. Therefore, the recess 731 makes it difficult for the separable pin member 70 to rotate in the disengagement direction, thereby effectively preventing the idling of the separable pin member 70 and better improving the engagement reliability of the separable pin member 70 and the retainer pin member 40.

[0059] Further, the recess 731 may be disposed on the half element 73 in the following manner. If the recess 731 is formed only on a front surface (that is, an upper surface) of the half element 73, the recess 731 only supports the front end of the upper flange 33 on the right side of the slider 30. Alternatively, if the recess 731 is formed only on a back surface (that is, a lower surface) of the half element 73, the recess 731 only supports the front end of the lower flange 34 on the right side of the slider 30. Alternatively, if the recess 731 is formed on both the front surface and the back surface of the half element 73, the upper and lower recesses 731 respectively support the front ends of the upper flange 33 and the lower flange 34 on the right side of the slider 30. In the present embodiment, as illustrated in FIGS. 5, 6, and 12 to 14, the recess 731 is formed on both the front surface and the back surface of the half element 73. The front surface recess 731 of the half element 73 can abut against the front end of the upper flange 33 on the right side of the slider 30 and support the front end of the upper flange 33, and the back surface recess 731 of the half element 73 can abut against the front end of the lower flange 34 on the right side of the slider 30 and support the front end of the lower flange 34, thereby better limiting the idling of the separable pin member 70 toward a disengagement side and better driving the separable pin member 70 to rotate toward an engagement side.

[0060] Further, as illustrated in FIG. 15, the outer peripheral contour of the recess 731 includes a plurality of recessed inclined surfaces 75, and the plurality of recessed inclined surfaces 75 are sequentially connected from back to front along the length direction of the slide fastener. Thus, the recess 731 supports the front end of the upper flange 33 and/or the lower flange 34 with these surfaces, thereby better limiting the rotation of the separable pin member 70 in the disengagement direction.

[0061] Further, as illustrated in FIG. 15, inclination angles of the plurality of recessed inclined surfaces 75 are different. Specifically, slopes of the plurality of recessed inclined surfaces 75 with respect to the central axis (that is, the first central axis S) extending along the length direction of the slide fastener gradually increase. In the present embodiment, there are three recessed inclined surfaces 75, and the three recessed inclined surfaces 75 are respectively a first inclined surface 751, a second inclined surface 752, and a third inclined surface 753 sequentially connected from back to front along the length direction of the slide fastener. The first inclined surface 751 and the outer peripheral surface of the half element 73, as well as the third inclined surface 753 and the outer peripheral surface of the half element 73 are connected via arc segments 754. In this way, the relationship of angle between first inclined surface 751 and first central axis S<angle between second inclined surface 752 and first central axis S<angle between third inclined surface 753 and first central axis S, is satisfied. The third inclined surface 753 is steepest with respect to the first central axis S extending forward and backward. When the front ends of the upper flange 33 and the lower flange 34 collide with the half element 73, the first inclined surface 751 disposed on the rearmost side in the recess 731 can accommodate the front ends of the upper flange 33 and the lower flange 34, and thus the half element 73 does not idle and the separable pin member 70 does not idle. Due to an increase of the slopes of the remaining recessed inclined surfaces 75, the second inclined surface 752 and the third inclined surface 753 are disposed on a front side of the upper flange 33 and the lower flange 34 along the moving direction of the slider 30 when the slide fastener is closed. Therefore, the user needs to apply a certain force to the slider 30 to make the upper flange 33 and the lower flange 34 pass through the outer peripheral side of the half element 73 after passing over the second inclined surface 752 and the third inclined surface 753. Due to the application of the force, the separable pin member 70 is better driven to rotate toward the retainer pin member 40, and thus the separable pin member 70 is better engaged with the retainer pin member 40.

[0062] Further, as illustrated in FIG. 10, a reinforcing rib 35 is fixed on an upper surface of the upper blade 31 on a right side close to the separable pin member 70, and the reinforcing rib 35 integrally protrudes upward from the upper surface of a front end side of the upper blade 31, thereby improving the structural strength of the upper blade 31.

[0063] Further, the retainer pin member 40 and the separable pin member 70 are engaged with each other. As illustrated in FIGS. 7 to 9 and FIGS. 12 to 14, a right side of the retainer pin member 40 and a right side of the separable pin member 70 are respectively provided with an engaging recess 45 and an engaging column 77, and the engaging recess 45 can accommodate the engaging column 77. Based on this, the engaging recess 45 may be provided on the right side of the retainer pin member 40, and the engaging column 77 may be provided on a left side of the separable pin member 70, or the engaging column 77 may be provided on the right side of the retainer pin member 40, and the engaging recess 45 may be provided on the left side of the separable pin member 70. Regardless of whether the engaging recess 45 is provided on the retainer pin member 40 or the engaging recess 45 is provided on the separable pin member 70, the inclined protrusion 421 capable of driving the slider 30 to be inclined to the right is provided on the retainer pin member 40 disposed on the same side as the slider 30. In the present embodiment, as illustrated in FIGS. 7 to 9 and 12 to 14, the retainer pin member 40 is provided with the engaging recess 45, and the separable pin member 70 is provided with the engaging column 77. The following will be described with reference to this structure.

[0064] In the retainer pin member 40, as illustrated in FIGS. 7 to 9, the retainer pin member 40 further includes a retainer pin column 46 integrally extending forward from a front end of the retainer pin main body 41, and an upper engaging arm 47 and a lower engaging arm 48 both extending rightward from a right side of the retainer pin column 46. The retainer pin arm 42 is disposed on a left side of the retainer pin column 46, and a flange accommodating groove 49 is formed therebetween. The upper engaging arm 47 and the lower engaging arm 48 are disposed facing each other up and down, and an area with an opening facing to the right formed between the retainer pin column 46, the upper engaging arm 47 and the lower engaging arm 48 forms the engaging recess 45. The retainer pin member 40 is fixed at a lower end of a right side of the first cloth tape 10 by injection molding, and the retainer pin main body 41, the retainer pin arm 42 and the retainer pin column 46 are injection molded on both a front surface and a back surface of the first cloth tape 10. When the retainer pin member 40 and the separable pin member 70 are engaged with each other and the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, as illustrated in FIGS. 5 and 6, the gap 43 formed between the slider 30 and the part of the retainer pin arm 42 other than the inclined protrusion 421 is an inner part of the flange accommodating groove 49. The upper flange 33 and the lower flange 34 on the left side of the slider 30 are both located in the flange accommodating groove 49. The retainer pin column 46, the upper engaging arm 47 and the lower engaging arm 48 are all located in the element guide passage 39 of the slider 30. A front end of the engaging recess 45 extends to the rear side of the connecting column 36 in the slider 30.

[0065] In the separable pin member 70, as illustrated in FIGS. 12 to 14, the engaging column 77 integrally extends forward from a front end of the separable pin main body 71, and a front end of the engaging column 77 and the half element 73, as well as a right side of the engaging column 77 and the separable pin arm 72 are connected via a separable pin transition portion 78. The separable pin member 70 is fixed at a lower end of a left side of the second cloth tape 50 by injection molding, and the separable pin main body 71, the separable pin arm 72, the half element 73, the engaging column 77 and the separable pin transition portion 78 are injection molded on both a front surface and a back surface of the second cloth tape 50. When the retainer pin member 40 and the separable pin member 70 are engaged with each other and the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, as illustrated in FIGS. 5 and 6, the front end of the engaging column 77 extends to the rear side of the connecting column 36 in the slider 30, and the engaging column 77 is screwed leftward into the element guide passage 39 by rotating with respect to the slider 30, and is engaged with the engaging recess 45.

[0066] Further, the rotational engagement structure between the retainer pin member 40 and the separable pin member 70 is as follows. As illustrated in FIGS. 8 and 9, a rear end surface of the retainer pin main body 41 is provided with a rotating shaft 410 protruding backward. As illustrated in FIGS. 12 and 13, a front side of the separable pin main body 71 is provided with a rotating shaft hole 79 with an opening facing forward. The rotating shaft 410 can be rotatably accommodated in the rotating shaft hole 79, thereby implementing the rotational engagement between the retainer pin member 40 and the separable pin member 70. Of course, in other embodiments, a rear end surface of the retainer pin main body 41 may also be provided with a rotating shaft hole 79, and the front side of the separable pin main body 71 may be provided with a rotating shaft 410 protruding forward. The rotating engagement between the retainer pin member 40 and the separable pin member 70 may be implemented by the rotating engagement between the rotating shaft 410 and the rotating shaft hole 79.

[0067] Further, the separation insert formed by the retainer pin member 40 and the separable pin member 70 is a magnetic component. Specifically, as illustrated in FIG. 2, the retainer pin member 40 further includes a first magnet 44 fixed in the retainer pin main body 41, and the first magnet 44 is preferably fixed in the rotating shaft 410. The separable pin member 70 further includes a second magnet 76 fixed in the separable pin main body 71, and a magnetic attraction force that enables the retainer pin member 40 and the separable pin member 70 to rotate toward each other is generated between the first magnet 44 and the second magnet 76. By using the magnetic attraction force generated between the first magnet 44 and the second magnet 76, the retainer pin member 40 and the separable pin member 70 can be better rotated in the engagement direction. Thus, the left side of the separable pin member 70 is more firmly rotated and inserted into the slider 30, thereby preventing the retainer pin member 40 and the separable pin member 70 from being separated from each other, and thus more effectively preventing the idling. At the same time, the rotational engagement of the retainer pin member 40 and the separable pin member 70 is also facilitated, the operability at the beginning of closing the slide fastener is improved, and the use experience is ultimately improved.

[0068] Further, as illustrated in FIGS. 8 and 9, a limit abutment portion 411 protruding rearward is integrally provided on a rear surface of the retainer pin main body 41. The limit abutment portion 411 is disposed on a front side of the rotating shaft 410, a front end of the limit abutment portion 411 is connected to a rear end of the lower engaging arm 48, and a left end of the limit abutment portion 411 is connected to a right side of a rear end of the retainer pin arm 42. A front surface of the limit abutment portion 411 is an abutment inclined surface 412, and the abutment inclined surface 412 constitutes an outer peripheral wall of a part of the slider accommodating area 80. When the slider 30 is located in the slider accommodating area 80 and abuts against the retainer pin main body 41, as illustrated in FIG. 6, a rear end surface of the slider 30 just abuts against the abutment inclined surface 412 of the limit abutment portion 411, and the slider 30 and the abutment inclined surface 412 are fitted in a surface contact manner. The limit abutment portion 411 plays a certain limiting role in limiting the slider 30 when the slider 30 is pulled backward into the slider accommodating area 80. In particular, as illustrated in FIG. 6, an inclination angle of the abutment inclined surface 412 with respect to the central axis extending in the width direction of the slide fastener is . The inclination angle of the abutment inclined surface 412 is consistent with the inclination angle of the inclined protrusion 421 that drives the slider 30 to be inclined toward the separable pin member 70, so as to better guide the slider 30 to be inclined toward the separable pin member 70 at the beginning of closing the slide fastener.

[0069] As described above, the present invention provides a slide fastener including a first slide fastener member and a second slide fastener member that are separable, in which [0070] the first slide fastener member includes a first cloth tape, a first element row fixed on an inner edge of the first cloth tape, a slider movably attached to the first element row in a length direction of the slide fastener, and a retainer pin member fixed on the inner edge of the first cloth tape and disposed at an end of the first element row, the slider includes an upper blade and a lower blade disposed facing each other and connected to each other along a thickness direction of the slide fastener, and the upper blade and the lower blade are respectively provided with an upper flange and a lower flange protruding toward each other, and the retainer pin member includes a retainer pin main body and a retainer pin arm extending from the retainer pin main body toward the first element row, [0071] the second slide fastener member includes a second cloth tape, a second element row fixed on an inner edge of the second cloth tape, and a separable pin member fixed on the inner edge of the second cloth tape and disposed at an end of the second element row, and the separable pin member includes a separable pin main body, a separable pin arm extending from the separable pin main body toward the second element row, and a half element fixed to the separable pin main body and adjacent to the second element row, [0072] the retainer pin member and the separable pin member are rotatably engageable and are separable with respect to each other, and when the retainer pin member and the separable pin member are engaged with each other, a slider accommodating area which is enclosed by the retainer pin main body, the retainer pin arm and the separable pin arm and which is capable of accommodating the slider, is formed, [0073] an inclined protrusion protruding toward the slider accommodating area is provided on a side surface of the retainer pin arm facing the slider accommodating area, a flange passage is formed between the half element and the separable pin arm, and the flange passage is a part of the slider accommodating area and allows the upper flange and the lower flange of the slider on a side of the separable pin arm to pass therethrough, and [0074] when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the inclined protrusion abuts against an outer peripheral side of the slider and drives the slider to be inclined toward the separable pin member.

[0075] In the above slide fastener, when the slide fastener needs to be closed, the slider is first pulled to the end of the first element row on the first slide fastener member such that the slider abuts against the retainer pin member. Then, the separable pin member on the second slide fastener member is engaged with the retainer pin member on the first slide fastener member, and the separable pin member and the retainer pin member are rotated toward each other until the separable pin member and the retainer pin member are engaged with each other. At this time, the retainer pin main body, the retainer pin arm and the separable pin arm enclose a slider accommodating area, and the slider is just located in the slider accommodating area. The retainer pin arm and the separable pin arm are disposed on both sides of the slider along the width direction of the slide fastener, and the inclined protrusion on the retainer pin arm abuts against the outer peripheral side of the slider, thereby driving the slider to be inclined toward the separable pin member. After that, a user pulls the slider to drive the slider to move in a direction away from the separable pin member and the retainer pin member along the length direction of the slide fastener, that is, the slider is driven to move out of the slider accommodating area to drive the first element row and the second element row to engage, and the slider engaged with the first element row and the second element row is restored to a straight and non-inclined state. Therefore, in the process of pulling the slider out of the slider accommodating area, the upper flange and the lower flange on the slider close to the separable pin arm pass through the flange passage of the separable pin member, and the slider is switched from a state of being inclined toward the separable pin member to a state of not being inclined, which means that in this process, the slider drives the separable pin member to rotate toward the retainer pin member. The rotation direction is an engagement direction. Even if the slider is pulled up along a disengagement direction, the engagement will not be released, which effectively prevents the idling of the separable pin member or the retainer pin member in the disengagement direction, ensures that the separable pin member and the retainer pin member are engaged with each other when the slide fastener is closed, ensures the success rate of the slide fastener closing operation, and improves the use experience of the slide fastener.

[0076] Further, a recess recessed away from the flange passage is provided at an outer periphery of one end of the half element away from the second element row, and the recess is in communication with the flange passage, and when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the upper flange and/or the lower flange and the recess are disposed in sequence along a moving direction of the slider when the slide fastener is closed, and an end of the upper flange and/or an end of the lower flange is capable of abutting against the recess. In the process of pulling the slider out of the slider accommodating area, the upper flange and the lower flange on the slider may collide with the half element. When the ends of the upper flange and the lower flange collide with the half element, the end of the upper flange and/or the end of the lower flange abuts against the recess of the half element, an outer peripheral contour of the recess, which is recessed away from the flange passage, surrounds outer peripheries of the end of the upper flange and/or the end of the lower flange, and the recess supports the end of the upper flange and/or the end of the lower flange. On the one hand, the half element is limited from rotating in a disengagement direction, thereby achieving the object of limiting the separable pin member from rotating in the disengagement direction. On the other hand, when the upper flange and the lower flange pass through the outer periphery of the half element, the half element is driven to rotate toward the retainer pin member, which also drives the separable pin member to rotate toward the retainer pin member. Therefore, the recess makes it difficult for the separable pin member to rotate in the disengagement direction, thereby effectively preventing the idling of the separable pin member and better improving the engagement reliability of the separable pin member and the retainer pin member.

[0077] Further, the half element has the recess on each of both a front surface and a back surface thereof, the recess on the front surface of the half element is capable of abutting against the end of the upper flange, and the recess on the back surface of the half element is capable of abutting against the end of the lower flange, so as to better limit the idling of the separable pin member toward a disengagement side.

[0078] Further, an outer peripheral contour of the recess includes a plurality of recessed inclined surfaces, and the plurality of recessed inclined surfaces are sequentially connected along the length direction of the slide fastener. Thus, the recess supports the end of the upper flange and/or the end of the lower flange with these surfaces, thereby better limiting the rotation of the separable pin member in the disengagement direction.

[0079] Further, inclination angles of the plurality of recessed inclined surfaces are different. Specifically, slopes of the plurality of recessed inclined surfaces with respect to a central axis extending in the length direction of the slide fastener gradually increase. In this way, when the ends of the upper flange and the lower flange collide with the half element, the first recessed inclined surface can accommodate the end of the upper flange and/or the end of the lower flange, and thus the half element does not idle. Due to the increase in slope, the remaining recessed inclined surfaces are disposed on one side of the upper flange and/or the lower flange along a moving direction of the slider when the slide fastener is closed. Thus, the user needs to apply a certain force to the slider to make the upper flange and/or the lower flange pass through an outer peripheral side of the half element after passing over the remaining recessed inclined surfaces. Due to the application of the force, the separable pin member is better driven to rotate toward the retainer pin member, and thus the separable pin member is better engaged with the retainer pin member.

[0080] Preferably, three of the recessed inclined surfaces are provided, the three of recessed inclined surfaces are a first inclined surface, a second inclined surface and a third inclined surface sequentially connected along the length direction of the slide fastener, respectively, and the first inclined surface and an outer peripheral surface of the half element, as well as the third inclined surface and the outer peripheral surface of the half element are connected via arc segments.

[0081] Further, when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, an inclination angle at which the inclined protrusion drives the slider to be inclined toward the separable pin member is 20 to 25, particularly preferably 22. In this way, at the beginning of the engagement of the retainer pin member and the separable pin member, the slider can be prevented from being excessively inclined toward the separable pin member, thereby preventing the separable pin member from excessively moving away from the retainer pin member, and ensuring that the separable pin member and the retainer pin member can be better engaged with each other subsequently.

[0082] Further, when the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, a gap is formed between the slider and a part of the retainer pin arm other than the inclined protrusion. The gap allows the slider to be easily pulled into the slider accommodating area at the ends of the first element row and the second element row when the slide fastener is opened, and allows the slider to be easily pulled out of the slider accommodating area when the slide fastener is closed.

[0083] Further, the retainer pin member further includes a first magnet fixed in the retainer pin main body, the separable pin member further includes a second magnet fixed in the separable pin main body, and the first magnet and the second magnet are configured to generate a magnetic attraction force that enables the retainer pin member and the separable pin member to rotate toward each other, which makes it easier for the retainer pin member and the separable pin member to rotate and engage with each other, thereby improving the user experience.

[0084] Further, a reinforcing rib is fixed on a surface of the upper blade on a side of the separable pin member to improve the structural strength of the upper blade.

[0085] As described above, the slide fastener according to the present invention has the following beneficial effects.

[0086] In the present application, in the process of pulling the slider out of the slider accommodating area, the upper flange and the lower flange on the slider close to the separable pin arm pass through the flange passage of the separable pin member, and the slider is switched from a state of being inclined toward the separable pin member to a state of not being inclined, which means that in this process, the slider drives the separable pin member to rotate toward the retainer pin member. The rotation direction is an engagement direction. Even if the slider is pulled up along a disengagement direction, the engagement will not be released, which effectively prevents the idling of the separable pin member or the retainer pin member in the disengagement direction, ensures that the separable pin member and the retainer pin member are engaged with each other when the slide fastener is closed, ensures the success rate of the slide fastener closing operation, and improves the use experience of the slide fastener.

[0087] As described above, the present invention effectively overcomes various disadvantages in the related art and has high industrial utilization value.

[0088] The embodiments described above are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.