Elevating mechanism for a stick type product and stick type container having the same
12495880 ยท 2025-12-16
Assignee
Inventors
Cpc classification
A45D40/06
HUMAN NECESSITIES
International classification
Abstract
An elevating mechanism for a stick type container is structured to allow simple assembly and therefore can be produced with lower manufacturing costs. The elevating mechanism may include: a holder member having a support part and a gear shaft, a connector member having a connector body, a bridge, and a securing ring; and a screw socket member. The screw socket member may be configured to have at least a portion inserted in the connector space, the screw socket member may have a hollow interior such that a screw space open at the top and bottom is formed on an inner side of the screw socket member, and the screw socket member may have an outwardly protruding detent protrusion formed on its upper portion.
Claims
1. An elevating mechanism for a stick type product, the elevating mechanism comprising: a holder member having a support part and a gear shaft, the support part configured to support a stick material on an upper portion thereof and be movable along a vertical direction, the gear shaft extending downward from a lower surface of the support part; a connector member having a connector body, a bridge, and a securing ring, the connector body having a hollow interior to define a connector space therein, the connector space being open at a top and a bottom thereof, the connector body having an upper end exposed at each of a left side and a right side thereof to define an exposed rim, the bridge extending upward from an upper portion of the connector body at each of a front side and a rear side of the connector body, the securing ring defined at an upper portion of the bridge at a position separated from the exposed rim, the securing ring having an annular shape to define a restricting hole therein, the restricting hole configured to receive the gear shaft; and a screw socket member configured to have at least a portion thereof inserted in the connector space, the screw socket member having a hollow interior to define a screw space therein, the screw space being open at a top and a bottom thereof, the screw socket member having an outwardly protruding detent protrusion defined on an upper portion thereof.
2. The elevating mechanism of claim 1, wherein a first clearance slit is defined in an upper portion of the connector body, the first clearance slit extends downward from an upper end of the connector body to a particular depth, and the first clearance slit is defined between a portion where the exposed rim is defined and a portion where the bridge is defined.
3. The elevating mechanism of claim 1, further comprising: a shell member extending along the vertical direction, the shell member having a hollow interior to define a shell space therein, the shell space being open at a top and a bottom thereof, wherein the support part is configured to move along the vertical direction within the shell space, a coupling hole is defined on one side of the shell member, a coupling protrusion configured to be inserted into the coupling hole is defined on one side of the connector body, an upper portion of the coupling protrusion forms a sloped surface, and a lower portion of the coupling protrusion forms a curb.
4. The elevating mechanism of claim 3, wherein a second clearance slit is defined in the one side of the shell member, and the second clearance slit extends downward from a particular position below the coupling hole to a lower end of the shell member.
5. The elevating mechanism of claim 3, wherein a guide slit is defined in another side of the shell member, and the guide slit extends downward from a particular position to a lower end of the shell member.
6. The elevating mechanism of claim 1, wherein a sloped surface leading to the restricting hole is defined on an inner side of an upper portion of the securing ring.
7. The elevating mechanism of claim 1, wherein a distance between inner surfaces of the bridge located at the front side and the rear side of the connector body is greater than an outer diameter of the detent protrusion.
8. The elevating mechanism of claim 1, wherein a thread is defined at an upper portion of the screw space, and the screw socket member is configured to permit elastic deformation at a portion where the thread is defined.
9. A stick type container comprising the elevating mechanism of claim 1.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF THE INVENTION
(9) As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to particular modes of practice, and it is to be appreciated that all changes, equivalents, and substitutes that do not depart from the spirit and technical scope of the present invention are encompassed by the present invention. In the description of the present invention, certain detailed explanations of the related art are omitted if it is deemed that they may unnecessarily obscure the essence of the invention.
(10) The terms used in the present specification are merely used to describe particular embodiments and are not intended to limit the present invention. An expression used in the singular encompasses the expression of the plural, unless it has a clearly different meaning in the context. In the present specification, it is to be understood that terms such as including or having, etc., are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof disclosed in the specification and are not intended to preclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may exist or may be added.
(11) While such terms as first and second, etc., can be used to describe various components, such components are not to be limited by the above terms. The above terms are used only to distinguish one component from another.
(12) For convenience, the specification uses terms such as inner, outer, front, rear, left, right, upper, and lower. In the descriptions below, an inner side refers to a side closer to the interior of the elevating mechanism 1000, whereas an outer side refers to a side further away from the interior of the elevating mechanism 1000. The terms front, rear, left, right, upper, and lower are used to describe the elevating mechanism 1000 when it is oriented as in
(13) Certain embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. Those components that are the same or are in correspondence are rendered the same reference numeral, and redundant descriptions are omitted.
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(15) A stick type container according to an embodiment of the invention may be a container that holds a stick material (not shown; also referred to herein simply as stick) such as a lipstick, lip balm, etc., for use by the user. The stick type container may use an elevating mechanism 1000 to move a holder member 200, which supports the stick material (not shown), along a vertical direction within the shell space 105 of a shell member 100. A stick type container according to an embodiment of the invention can further include a lower case (not shown) and an overcap (not shown) that house the elevating mechanism 1000. Of course, in certain embodiments, the stick type container can be complete just with a stick material (not shown) filled in the elevating mechanism 1000. As shown in the drawings, an elevating mechanism 1000 for a stick type product according to an embodiment of the invention can mainly include a shell member 100, a holder member 200, a connector member 300, and a screw socket member 400.
(16) The shell member 100 can extend along a vertical direction, and a shell space 105 that is open at the top and bottom may be formed on the inner side of the shell member 100. The holder member 200, which can be elevated and lowered by the elevating mechanism 1000, and the stick (not shown), which is supported on the holder member 200, may be moved along the vertical direction within the shell space 105. A shell body 110, which corresponds to the main part of the shell member 100, can be generally shaped as a hollow cylinder, and the shell space 105 can be formed in the hollow interior. In applications where the stick type container is used as a lipstick container, etc., the shell body 110 can be shaped as if the upper portion is cut away along a sloped plane, and various other design elements can be included for an aesthetic appearance.
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(18) In the shell body 110, a clearance slit 122 can be formed below the coupling hole 120. The clearance slit 122 can extend downward from a particular position below the coupling hole 120 to the lower end of the shell body 110 and can be shaped such that a lower part of the clearance slit 122 opens wider towards the bottom. As the clearance slit 122 is located below the coupling hole 120, the portion of the shell body 110 directly under coupling hole 120 can have a shorter length along the vertical direction. This can make it easier for elastic deformation to occur when the coupling protrusion 320 of the connector member 300 enters the coupling hole 120, so that the coupling protrusion 320 may enter more easily.
(19) As illustrated in
(20) The holder member 200 is the portion that directly supports the stick material (not shown), which corresponds to the content of the stick type container. An elevating mechanism 1000 according to an embodiment of the invention can elevate and lower the holder member 200 within the shell member 100 and thus enable the user to adjust the amount of stick material (not shown) exposed at the top of the shell member 100.
(21) The support part 210 is the part supporting the stick (not shown). As illustrated in
(22) The support part 210 can house the stick material (not shown); for example, the lower end of the stick material (not shown) can be housed in the cup-shaped holder space 205. One or more securing protrusions 222 can be formed on the inner side of the support part 210 facing the holder space 205, where the securing protrusions 222 can prevent the stick material (not shown) from becoming detached from the support part 210. Although the drawings illustrate the support part 210 as having a cup-like shape to form the holder space 205 on its inside, it is possible to implement the support part 210 in various forms as long as the stick (not shown) can be supported by the support part 210.
(23) The gear shaft 230 can extend downward from a lower surface of the support part 210. The gear shaft 230 can interact with the screw socket member 400 to enable the holder member 200 to move along the vertical direction. As illustrated in
(24) The shaft body 232 can extend downward from a lower surface of the support part 210 and can pass through a restricting hole 305 of the connector member 300 to be inserted into the screw space 405 of the screw socket member 400 as in the example illustrated in
(25) The gear cogs 234 formed on the shaft body 232 can be configured to mate with the thread 434 formed in the screw space 405 of the screw socket member 400. In applications where the cross section of the shaft body 232 is longer in a particular direction, as in the example shown in the drawings, the gear cogs 234 can be formed on both sides with respect to said particular direction. When the screw socket member 400 is rotated by the user, the restricting hole 305 of the connector member 300 will not allow the shaft body 232 to rotate, and therefore the gear cogs 234 may move along the thread 434 of the screw space 405, causing the entire holder member 200 to move along the vertical direction in the manner of a lead screw. Although the drawings illustrate an example in which the gear cogs 234 are formed on the shaft body 232 and the thread 434 is formed in the screw space 405, it is also possible to form the thread on the shaft body 232 and form the gear cogs in the screw space 405. In such applications, the structure for preventing the rotation of the holder member 200 in relation to the screw socket member 400 may require modifications.
(26) The stopper protrusions 236 formed on the shaft body 232 can serve to prevent the holder member 200 from moving excessively upward to such an extent that the connector member 300 becomes detached from the screw socket member 400. In applications where the cross section of the shaft body 232 is longer in a particular direction, as in the example shown in the drawings, the stopper protrusions 236 can be formed on one or both sides with respect to the direction in which the cross section of the shaft body 232 is shorter. When the screw socket member 400 is rotated by the user, the holder member 200 can move upward, but if the user inadvertently rotates the screw socket member 400 excessively such that the holder member 200 reaches the highest permissible position, the stopper protrusions 236 may be caught on the lower surface of the securing ring 350. Since the stopper protrusions 236 are thus unable to pass through the restricting hole 305, the holder member 200 can be prevented from moving further upward and thus can be prevented from becoming detached.
(27) As illustrated in
(28) The connector member 300 is the part that connects the shell member 100 with the screw socket member 400 and keeps the shell member 100 and the screw socket member 400 coupled in a relatively rotatable state.
(29) The connector body 310 can form the main part of the connector member 300 and can have a hollow interior so as to form a connector space 315 on its inner side, with the connector space 315 open at the top and bottom. Since the connector member 300 itself is not a part that is rotated relatively to the shell member 100, it is not necessary for the connector body 310 to have a cylindrical shape. However, the screw socket member 400, which is inserted into the connector space 315, is a part that is rotated, and as such, the connector space 315 can have a circular cross section. The connector body 310 can be shaped such that its diameter decreases towards the top in a gradual and/or stepwise manner in correspondence to the insertion part 410 of the screw socket member 400 that is inserted therein.
(30) A base curb 312 can be formed on the lower end of the connector body 310. When the connector body 310 is inserted into the lower portion of the shell space 105, the lower end of the shell body 110 can be placed on the base curb 312. Also, a securing recess 322 can be formed on one side in a lower portion of the connector body 310. The securing recess 322 can be formed below the coupling protrusion 320 and can be shaped as if the outer perimeter of the connector body 310 is recessed inward. At the portion where the securing recess 322 is formed, the base curb 312 can be omitted. When the shell member 100 is coupled to the connector member 300, the clearance slit 122 of the shell body 110 can overlap the securing recess 322 of the connector body 310, and these can be used for aligning and/or coupling the elevating mechanism 1000 with another member such as a lower case (not shown), an overcap (not shown), or the like.
(31) The bridges 330 can be formed on certain parts of the upper portion of the connector body 310, while, on the remaining parts, the upper end of the connector body 310 can be exposed so as to form exposed rims 314. For example, if the part where the coupling protrusion 320 is formed on the connector member 300 is regarded as the front of the connector member 300, then on the front and rear sides of the connector body 310, the bridges 330 can be formed on the upper portion of the connector body 310 such that the connector body 310 continues to the bridges 330 without forming an exposed upper rim, whereas on the left and right sides of the connector body 310, the bridges 330 may not be formed, leaving the exposed rims 314.
(32) As illustrated in
(33) On the upper portion of the connector body 310, a clearance slit 335 can be formed between each bridge 330 and each exposed rim 314. The clearance slits 335 of the connector body 310 can extend downward from the upper end of the connector body 310 to a particular depth.
(34) Referring to
(35) Referring to
(36) The bridges 330 can extend upward from the upper portion of the connector body 310 at one side and the other side of the connector body 310 to connect the connector body 310 with the securing ring 350. The outer surface and inner surface of each bridge 330 can continue from the outer surface and inner surface of the connector body 310.
(37) The securing ring 350 can be formed on the upper portions of the bridges 330. As illustrated in
(38) A sloped surface 352 that connects to the restricting hole 305 can be formed on the inner surface of an upper portion of the securing ring 350. The sloped surface 352 can, for example, be formed to face the restricting hole 305 at the front and rear sides of the restricting hole 305, so that the restricting hole 305 can have a shape corresponding to the cross section of the shaft body 232, of which the shape has an elongated form along the left and right directions.
(39) The screw socket member 400 can be rotatably coupled to the connector member 300 and can be rotated by the user when an elevating or lowering of the stick material (not shown) is required.
(40) The insertion part 410 is the part that is inserted into the connector space 315 of the connector member 300. The screw socket member 400 is a part that is rotated in relation to the shell member 100, holder member 200, and connector member 300, and the insertion part 410 in particular, which is inserted into the connector space 315, may preferably have a cross section that is circular or close to circular in shape overall. The insertion part 410 can have a diameter that decreases towards the top in a gradual and/or stepwise manner. Such shape prevents the insertion part 410 from having an excessively large difference in diameter between the top and bottom, even though a detent protrusion 414 protrudes outward at an upper portion of the insertion part 410.
(41) A flange 412 can be formed on the insertion part 410. When the screw socket member 400 is inserted into the connector member 300, the lower end of the connector body 310 can be placed on the flange 412.
(42) A detent protrusion 414 can be provided on an upper end of the insertion part 410. The detent protrusion 414 can protrude outward from an upper portion of the insertion part 410 so as to have an annular shape overall. As illustrated in
(43) The manipulation part 420 is the part that is positioned under the connector member 300 and is rotated by the user. As described above, the elevating mechanism 1000 illustrated in the drawings can be housed within a separate lower case (not shown), and the user does not necessarily have to directly rotate the manipulation part 420 of the screw socket member 400 itself. A multiple number of grip protrusions 424 can be formed on the outer perimeter of the manipulation part 420. The grip protrusions 424 allow the user to more easily rotate the manipulation part 420. The grip protrusions 424 can be inserted in corresponding slots formed in a lower case (not shown) or can be gripped by the user directly. A flange 422 can be provided also on the manipulation part 420. If the screw socket member 400 is inserted in a lower case (not shown), etc., the flange 422 can allow the screw socket member 400 to be placed in a designated position.
(44) A screw space 405 can be formed on the inner side of the screw socket member 400, and a thread 434 can be formed on the inner perimeter of the screw space 405. As described above, the gear cogs 234 formed on the gear shaft 230 of the holder member 200 may interact with the thread 434 of the screw space 405, thereby causing the holder member 200 to move along the vertical direction in the manner of a lead screw.
(45) In an embodiment of the invention, the thread 434 can be formed in a particular position on an upper portion of the screw space 405, and the screw socket member 400 can be configured to permit elastic deformation at the portion where the thread 434 is formed. This structure makes it possible, when inserting the gear shaft 230 of the holder member 200 into the screw space 405, to couple the holder member 200 to the screw socket member 400 without having to rotate the gear cogs 234 along the thread 434 by simply pushing the gear shaft 230 downward, as the thread 434 may move to the sides of the gear cogs 235 due to the elastic deformation of the screw socket member 400.
(46) The following provides a more detailed description of the processes for assembling and using an elevating mechanism 1000 based on an embodiment of the invention.
(47) Manufacturing an elevating mechanism 1000 according to an embodiment of the invention can first involve fabricating each of the shell member 100, holder member 200, connector member 300, and screw socket member 400. A stick material (not shown) corresponding to the content of the stick type product can be provided on the support part 210 of the holder member 200. The manufacturer or manufacturing apparatus can first insert the screw socket member 400 into the connector space 315 of the connector member 300.
(48) The manufacturer or manufacturing apparatus can move the screw socket member 400 upward from below the connector member 300 to insert the insertion part 410 into the connector space 315. As the screw socket member 400 is inserted deeper, the inner diameter of the connector space 315 may become smaller than the outer diameter of the detent protrusion 414, but the clearance slits 335 formed in the connector body 310 can permit slight elastic deformations in the upper portion of the connector body 310, thereby expanding the connector body 310 and allowing the detent protrusion 414 to pass through. When the screw socket member 400 reaches a designated position, the detent protrusion 414 may move to the top of the exposed rims 314, at which the connector body 310 may return to its original state, and the lower surface of the detent protrusion 414 may contact the upper surfaces of the exposed rims 314. In this way, the screw socket member 400 can be rotatably coupled to the connector member 300.
(49) Then the manufacturer or manufacturing apparatus can couple the connector member 300 and screw socket member 400 to the holder member 200.
(50) The manufacturer or manufacturing apparatus can move the holder member 200 downward from above the connector member 300 to insert the gear shaft 230 through the restricting hole 305 of the connector member 300. Since the restricting hole 305 is formed in a shape and size corresponding to those of the gear shaft 230, the restricting hole 305 may not hinder the entry of the gear shaft 230 overall when the gear shaft 230 is aligned in the proper direction. As the stopper protrusions 236 on the lower portion of the gear shaft 230 have gradual slopes, they may pass through the restricting hole 305 without difficulty, and after the stopper protrusions 236 have passed through, the stopper protrusions 236 may not easily be separated from the restricting hole 305 due to the curbs formed on the upper portions.
(51) The manufacturer or manufacturing apparatus can move the holder member 200 further downward until the gear cogs 234 of the gear shaft 230 engage the thread 434 of the screw space 405. Once the gear cogs 234 have mated with the thread 434, the manufacturer or manufacturing apparatus can rotate the holder member 200 while holding the screw socket member 400, so that the gear cogs 234 may move down along the thread 434. Here, since the connector member 300 is rotatably coupled to the screw socket member 400, the connector member 300 can rotate together with the holder member 200. Although the detent protrusion 414 of the screw socket member 400 rotates above the exposed rims 314, the detent protrusion 414 is formed in a size that does not allow it to touch the bridges 330 and therefore does not obstruct the rotation of the connector member 300.
(52) In certain embodiments of the invention, the upper portion of the screw socket member 400 can be configured to permit a slight degree of elastic deformation. In such applications, the manufacturer or manufacturing apparatus can press the holder member 200 downward even after the gear cogs 234 of the gear shaft 230 have reached the thread 434 of the screw space 405. The upper portion of the screw socket member 400 can be deformed elastically along a particular direction, and the connector member 300 can also be deformed elastically at the same time due to the clearance slits 335, thereby allowing the multiple gear cogs 234 to move over the thread 434 along the vertical direction.
(53) When the holder member 200 is inserted to its designated position in the manner described above, the assembly of the holder member 200, connector member 300, and screw socket member 400 as illustrated in
(54) Next, the manufacturer or manufacturing apparatus can couple the shell member 100 to the connector member 300.
(55) While the coupling protrusion 320 and the guide protrusion 326 are aligned with the coupling hole 120 and the guide slit 126, respectively, the manufacturer or manufacturing apparatus can move the shell member 100 downward from above the connector member 300 to insert the holder member 200 into the shell space 105 of the shell member 100. After most of the holder member 200 and connector member 300 has been inserted in the shell space 105, the guide protrusion 326 may first be inserted into the guide slit 126. Since the bottom of the guide slit 126 is shaped to open wider towards the bottom, the guide protrusion 326 can be readily guided into the guide slit 126. As the guide protrusion 326 is inserted into the guide slit 126, the coupling protrusion 320 can be aligned with the coupling hole 120. Moreover, since the bottom of the clearance slit 122 under the coupling hole 120 is also shaped to open wider towards the bottom, the coupling protrusion 320 can also be guided towards the coupling hole 120.
(56) Although the coupling protrusion 320 protrudes outward, the clearance slit 122 on the one side and the guide slit 126 on the other side of the shell body 110 allow the lower portion of the shell body 110 to undergo an elastic deformation, which causes the shell body 110 to expand and permit the passage of the coupling protrusion 320. Once the shell member 100 is inserted to its designated position, the lower surface of the coupling protrusion 320 may contact the portion under the coupling hole 120. As the coupling hole 120 surrounds the coupling protrusion 320 from all sides, the shell member 100 and the connector member 300 can maintain a securely coupled state. Thus, the shell member 100 can be coupled to the connector member 300 in a manner that does not allow rotation, and the elevating mechanism 1000 illustrated in
(57) Once the shell body 110 surrounds the connector body 310 as above, the connector body 310 may no longer expand, in spite of the clearance slits 335. In this state, there can be no elastic deformation whatsoever in the connector member 300 and the screw socket member 400. It is no longer possible for the gear cogs 234 to move over the thread 434 along the vertical direction, and it is no longer possible for the detent protrusion 414 of the screw socket member 400 to move back into the connector space 315. Thus, the holder member 200, connector member 300, and screw socket member 400 can remain coupled to one another in a very secure state.
(58) The elevating mechanism 1000 for a stick type product and the stick type container having the same according to an embodiment of the invention described above can be assembled in a very simple manner. The screw socket member 400 can be coupled to the connector member 300 by a simple action of inserting the screw socket member 400 into the connector space 315 along a vertical direction; the holder member 200 can be coupled to the connector member 300 by a simple action of inserting the gear shaft 230 through the restricting hole 305 and into the connector space 315 along a vertical direction; and the shell member 100 can be coupled to the connector member 300 by a simple action of inserting the connector member 300 into the shell space 105 along a vertical direction. This makes it possible to assemble small components into a considerably complicated structure in a very simple manner and also enables mass production via an automated process, thereby providing the advantage of reducing the manufacturing costs overall.
(59) While the foregoing provides a description with reference to an embodiment of the present invention, it should be appreciated that a person having ordinary skill in the relevant field of art would be able to make various modifications and alterations to the present invention without departing from the spirit and scope of the present invention set forth in the scope of claims below.