Component-securing device

Abstract

In a component-securing device, in a state in which a base member is secured to a component by the engagement of an engagement portion of a clip to a to-be-engaged portion of a joining pin, pushing a pair of pressing portions in an outer peripheral portion of the clip in a direction (see arrow A) of approaching each other makes the outer peripheral portion deform and a pair of joining pin insertion portions move in a direction of moving away from each other, and engagement between the engagement portion of the clip and the to-be-engaged portion of the joining pin is released, thereby enabling the clip to be polled out from the joining pin. Merely deforming the outer peripheral portion of the clip inward enables the engagement with the joining pin to be released.

Claims

1. A component-securing device comprising a strip-shaped joining pin that comprises a pair of wide faces and a pair of narrow faces and that has a large number of to-be-engaged portions formed on at least one of the pair of wide faces, and a clip that is detachably engaged with the joining pin to secure a component, wherein the clip comprises a ring-shaped outer peripheral portion, a pair of support post portions that extend inward from two mutually opposing first positions of the outer peripheral portion, a pair of joining pin insertion portions that are provided on mutually opposing extremity parts of the pair of support post portions and into which the joining pin can be fitted, an engagement portion that is provided on at least one of the pair of joining pin insertion portions and that is capable of engaging with the to-be-engaged portions of the joining pin, and a pair of pressing portions that are provided on two second positions sandwiched by the two first positions of the outer peripheral portion; each of the pair of joining pin insertion portions having an opposing face opposing each other in parallel across a gap; and pushing the pair of pressing portions in a direction of approaching each other makes the outer peripheral portion deform and the pair of joining pin insertion portions move in a direction of moving away from each other with the opposing faces of the pair of joining pin insertion portions being kept in parallel with each other, and engagement between the engagement portion and the to-be-engaged portions is released.

2. The component-securing device according to claim 1, wherein the pair of support post portions are provided on the outer peripheral portion in a state distanced from each other, one of the pair of joining pin insertion portions comprises a pair of first projecting portions that project in an insertion direction of the joining pin from opposite ends of the one of the pair of joining pin insertion portions, an other of the pair of joining pin insertion portions comprises a pair of second projecting portions that project in the insertion direction of the joining pin from opposite ends of the other of the pair of joining pin insertion portions, and in a state where the engagement portion and the to-be-engaged portions are engaged, due to a force generated when the clip is pulled off the joining pin, extremities of the first projecting portions and the second projecting portions are placed in abutment against each other.

3. The component-securing device according to claim 2, wherein a projection height of the first projecting portions coincides with a height of a cut-off position of the joining pin.

4. The component-securing device according to claim 2, wherein at least one of the pair of joining pin insertion portions comprises a stopper portion that abuts against the other of the pair of joining pin insertion portions when load is applied to the pair of joining pin insertion portions so as to make these joining pin insertion portions approach each other.

5. The component-securing device according to claim 2, wherein the clip comprises a flat face on a side opposite to an insertion direction of the joining pin.

6. The component-securing device according to claim 2, wherein the pressing portions comprises a recessed and raised portion.

7. The component-securing device according to claim 1, wherein at least one of the pair of joining pin insertion portions comprises a stopper portion that abuts against an other of the pair of joining pin insertion portions when load is applied to the pair of joining pin insertion portions so as to make these joining pin insertion portions approach each other.

8. The component-securing device according to claim 1, wherein the clip comprises a flat face on a side opposite to an insertion direction of the joining pin.

9. The component-securing device according to claim 1, wherein the pressing portions comprises a recessed and raised portion.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a perspective view of a component-securing device. (first embodiment)

(2) FIG. 2 is a perspective view of a clip. (first embodiment)

(3) FIG. 3 is a view in the direction of arrow 3 in FIG. 2. (first embodiment)

(4) FIG. 4 is a sectional view along line 4-4 in FIG. 1. (first embodiment)

(5) FIG. 5 is a view showing a state in which an excess portion of a joining pin main body is cut off. (first embodiment)

(6) FIG. 6 is a diagram for explaining the operation of a first projecting portion of the clip. (first embodiment)

(7) FIG. 7 is a sectional view along line 7-7 in FIG. 1. (first embodiment)

(8) FIG. 8 is a diagram for explaining the operation of the first projecting portion and a second projecting portion of the clip. (first embodiment)

(9) FIG. 9 is a diagram for explaining the operation of a stopper part of the clip. (first embodiment)

EXPLANATION OF REFERENCE NUMERALS AND SYMBOLS

(10) 12 Component

(11) 13 Joining pin

(12) 13c To-be-engaged portion

(13) 14 Clip

(14) 14a Outer peripheral portion

(15) 14b Support post portion

(16) 14c Joining pin insertion portion

(17) 14d Stopper portion

(18) 14e Pressing portion

(19) 14f First flat face (flat face)

(20) 14h First projecting portion

(21) 14i Second projecting portion

(22) 14j Engagement portion

(23) a Wide face

(24) b Narrow face

(25) c First position

(26) d Second position

MODES FOR CARRYING OUT THE INVENTION

(27) All embodiment of the present invention is explained below by reference to FIG. 1 to FIG. 9.

First Embodiment

(28) As shown in FIG. 1 and FIG. 4, a component-securing device related to the present embodiment is used for detachably securing a component 12 that is for example an automobile under spoiler to a base member 11 that is for example an automobile bumper face, and is formed from a synthetic resin joining pin 13 and a synthetic resin clip 14 fitted onto the joining pin 13. The joining pin 13 includes a rectangular plate-shaped mounting portion 13a and a strip-shaped joining pin main body 13b rising vertically in an axis L direction from a central part of the mounting portion 13a, the mounting portion 13a being seemed to the component 12 by means of double-sided tape 15.

(29) The strip-shaped joining pin main body 13b has a basically rectangular cross section and includes wide faces a and a corresponding to a pair of long sides of the cross section and narrow faces b and b corresponding to a pair of short sides of the cross section. A large number of to-be-engaged portions 13c as recessed and raised portions having a triangular cross section are formed on the pair of wide faces a and a by making indentations therein, the phase of the to-be-engaged portions 13c on one wide face a being displaced in the axis L direction by half of the pitch from the phase of the to-be-engaged portions 13c on the other wide face a (see FIG. 4).

(30) The structure of the clip 14 is now explained by reference to FIG. 2 and FIG. 3.

(31) The clip 14 includes an annular outer peripheral portion 14a having the axis L as the center, opposite ends on one diameter direction of the outer peripheral portion 14a being defined as first positions c and c, and opposite ends on another diameter direction that is orthogonal to said one diameter direction being defined as second positions d and d (see FIG. 3). Three support post portions 14b project inward in the radial direction from the vicinity of each first position c, and a plate-shaped joining pin insertion portion 14c is provided on the extremity of the support post portions 14b. The pair of joining pin insertion portions 14c and 14c oppose each other in parallel across a gap that is substantially equal to the thickness of the joining pin main body 13b, and the joining pin main body 13b is inserted therethrough. A pair of stopper portions 14d and 14d project from opposite ends of one of the pair of joining pin insertion portions 14c and 14c toward the other, and the pan of joining pin insertion portions 14c and 14c oppose each other across a gap (see FIG. 3) so as to be capable of abutting against each other via the stopper portions 14d and 14d. Furthermore, pressing portions 14e and 14e formed from a plurality of recessed and raised portions are provided on an outer face of the vicinity of the second positions d and d of the outer peripheral portion 14a.

(32) The outer peripheral portion 14a, the support post portions 14b, the joining pin insertion portions 14c and 14c, the stopper portions 14d and 14d, and the pressing portions 14e and 14e all have the same thickness in the axis L direction; a first flat face 14f is formed on one end face in the axis L direction, that is, on a side opposite to the insertion direction, shown by the arrow F, of the joining pin 13 (see FIG. 4), and a second flat face 14g is formed on the same side as the direction, shown by the arrow F, in which the joining pin 13 is inserted. A pair of triangular first projecting portions 14h and 14h and a pair of triangular second projecting portions 14i and 14i project from the second flat face 14g in the axis L direction.

(33) That is, the pair of first projecting portions 14h and 14h project in the axis L direction from opposite end parts of one joining pin insertion portion 14c, and the pair of second projecting portions 14i and 14i project in the axis L direction from opposite end parts of the other joining pin insertion portion 14c. In this arrangement, the first projecting portions 14h and 14h are at positions that extend in the axis L direction from the stopper portions 14d and 14d, and the first projecting portions 14h and 14h and the second projecting portions 14i and 14i oppose across the gap (see FIG. 3) so as to be capable of abutting against each other.

(34) A pair of claw-shaped engagement portions 14j and 14j that are continuous with the second flat face 14g are projectingly provided on the pair of joining pin insertion portions 14c and 14c of the clip 14 so as to oppose each other. These engagement portions 14j and 14j are capable of engaging with the to-be-engaged portions 13c and 13c of the joining pin main body 13b.

(35) The operation of the embodiment of the present invention having the above arrangement is now explained.

(36) In order to secure the component 12 to the base member 11, the mounting portion 13a of the joining pin 13 is first secured to the component 12 by means of the double-sided tape 15, and the joining pin main body 13b is then made to pass, from the extremity, through a through hole Ha (see FIG. 4) formed in the base member 11. Subsequently, the extremity of the joining pin main body 13b is inserted into the joining pin insertion portions 14c and 14c of the clip 14 from the first flat face 14f side of the clip 14 and, while pulling the extremity of the joining pin main body 13b forward using one hand, the base member 11 is pushed away using the other hand.

(37) As a result, the engagement portions 14j and 14j of the clip 14 slide along the to-be-engaged portions 13c of both of the wide faces a and a of the joining pin main body 13b; finally, either one of the engagement portions 14j engages with one of the to-be-engaged portions 13c of one wide face a, the clip 14 is integrated with the joining pin main body 13b, the base member 11 is held between the mounting portion 13a of the joining pin 13 and the first flat face 14f of the clip 14, and as shown in FIG. 4 the component 12 is seemed to the base member 11. In a state in which the component 12 is seemed by means of the clip 14, the first flat face 14f of the clip 14 is in surface contact with the base member 11 to thus disperse the load, thereby enabling strong securing while preventing the clip 14 from deforming.

(38) The reason why only one of the pair of engagement portions 14j and 14j engages with the to-be-engaged portion 13c is because the phases of the to-be-engaged portions 13c of the pair of wide faces a and a of the joining pin main body 13b are displaced from each other by half of the pitch. In this arrangement, since the other engagement portion 14j that is not engaged is pushed back by means of the to-be-engaged portion 13c and undergoes elastic deformation, it does not interfere with engagement of said one engagement portion 14j.

(39) As described above, after the component 12 is seemed to the base member 11 using the joining pin 13 and the clip 14, an excess portion of the joining pin main body 13b projecting from the clip 14 is cut off at a cut-offline shown by the thick double-dotted broken line in FIG. 4 using a cutter. In this arrangement, by cutting off the joining pin main body 13b using the extremities of the first projecting portions 14h and 14h and the second projecting portions 14i and 14i as a guide, as shown in FIG. 5, not only is it possible to carry out cutting at an appropriate cut-off position but it is also possible to carry out cutting easily.

(40) Here, to separate the clip 14 from the joining pin 13 in order to detach the component 12, as shown in FIG. 6 the pair of pressing portions 14e and 14e of the clip 14 are pinched using two fingers and pushed in the directions of arrows A and A, thus deforming the circular outer peripheral portion 14a into an elliptical shape. As a result, the pail of support post portions 14b and the pair of joining pin insertion portions 14c and 14c move in the direction of arrows B and B so as to move away from each other, and the pair of engagement portions 14j and 14j are disengaged from the to-be-engaged portions 13c of the joining pin main body 13b, thus enabling the clip 14 to be pulled out from the joining pin main body 13b.

(41) In this way, merely pushing the pressing portions 14e and 14e of the clip 14 with the fingertips enables the pan of engagement portions 14j and 14j to be moved away from each other and engagement with the joining pin 13 to be released, and it is therefore possible not only to reduce the dimension of the clip 14 in the axis L direction to thus achieve a small size, but it is also possible to simplify the shape of the clip 14, thus simplifying a die for molding and cutting the cost of producing the clip 14.

(42) Furthermore, even if it is necessary to carry out operations of attaching the joining pin 13 to the clip 14 and detaching it therefrom using the hands in a place where a worker cannot see them, since the pressing portions 14e and 14e provided on the outer peripheral portion 14a of the clip 14 include the recessed and raised portion, it is possible for the worker to identify the positions of the pressing portions 14e and 14e by touch with the fingertips, thus improving the ease of operation. Moreover, it is possible to prevent the fingertips from slipping by means of the recessed and raised portion provided on the pressing portions 14e and 14e, thus further improving the ease of operation.

(43) Moreover, as shown in FIG. 7, when the clip 14 is pried up in the direction of arrows C-C within a plane of the joining pin main body 13b, if the clip 14 tilts greatly, there is a possibility that engagement between the engagement portions 14j and 14j and the to-be-engaged portions 13c will be released, but since first projecting portions 14h and 14h projecting from the second flat face 14g of the clip 14 abut against the narrow faces b and b of the joining pin main body 13b, it is possible to suppress tilting of the clip 14 in the direction of the arrows C-C, thus preventing the engagement portions 14j and 14j and the to-be-engaged portions 13c from being disengaged.

(44) Furthermore, as shown in FIG. 8, if the clip 14 is forcibly pulled off the joining pin main body 13b in the direction of arrows D, the support post portions 14b and the joining pin insertion portions 14c and 14c are flexed in the axis L direction by means of the reaction force that the engagement portions 14j and 14j of the clip 14 receive from the to-be-engaged portions 13c of the joining pin main body 13b, and there is a possibility that engagement between the engagement portions 14j and 14j and the to-be-engaged portions 13c will be released. However, since the reaction force makes the extremities of the first projecting portions 14h and 14h and the extremities of the second projecting portions 14i and 14i abut against each other to thus prevent the support post portions 14b and the joining pin insertion portions 14c and 14c from flexing, it is possible to prevent engagement between the engagement portions 14j and 14j and the to-be-engaged portions 13c from being released.

(45) Furthermore, as shown in FIG. 9, when a load in a direction of arrows E-E acts on the pair of first positions c and c of the outer peripheral portion Ma in a state in which the clip 14 is in isolation, the stopper portions 14d and 14d projecting from one joining pin insertion portion 14c abut against the other joining pin insertion portion 14c, thus preventing excessive deformation of the outer peripheral portion 14a.

(46) An embodiment of the present invention is explained above, but the present invention may be modified in a variety of ways as long as the modifications do not depart from the spirit and scope thereof.

(47) For example, the outer peripheral portion of the clip of the present invention does not always need to be circular and may have a ring shape such as a rectangular, hexagonal, octagonal, etc. shape.

(48) Furthermore, the component of the present invention is not limited to the under spoiler of the embodiment.

(49) Moreover, in the embodiment the joining pin 13 is provided on the component 12 side, but the joining pin 13 may be provided on the base member 11 side.

(50) Furthermore, in the embodiment the stopper portions 14d and 14d are provided on one of the pair of joining pin insertion portions 14c and 14c, but stopper portions 14d may be provided on both thereof.

(51) Moreover, in the embodiment the engagement portions 14j and 14j are provided on both of the pair of joining pin insertion portions 14e and 14c, but an engagement portion 14j may be provided on only either one of joining pin insertion portions 14c.

(52) Furthermore, in the embodiment the to-be-engaged portions 13c are provided on both of the pair of wide faces a and a of the joining pin main body 13b, but to-be-engaged portions 13c may be provided on only either one wide face a.

(53) Moreover, in the embodiment the support post portions 14b are divided into three, but the number and shape of the support post portions 14b may be freely chosen.