Skin locking clip

Abstract

The objective is to obtain a skin-locking clip that can reduce the insertion force of the insertion-side clip while ensuring the release force of the insertion-side clip, and that can be molded more easily. [Solution] The skin-locking clip 10 comprises a receiving clip 20, an insertion clip 30, and an engaging portion 40. The receiving clip 20 comprises a base 22 held by the foam and a pair of wall portions 24L and 24R erected from the base 22. The insertion clip 30 comprises a mounting portion 32 attached to the skin and a tapered insertion portion 34 connected to one end of the mounting portion 32 and inserted into a accommodating space S provided between the pair of wall portions 24L and 24R. The engaging portion 40 comprises a projection 28 provided on the bottom surface between the pair of wall portions 24L and 24R of the receiving clip 20 and projecting along the longitudinal direction, and a groove portion 36 provided on the insertion-side end face of the insertion portion 34 of the insertion clip 30 and having a groove formed along the longitudinal direction that engages with the projection 28.

Description

Technical Field

[0001] The present invention relates to a clip for locking the skin on a seat.

Background Art

[0002] A cushion pad of a seat, for example, a seat for a vehicle, is formed by covering the surface of a foam made of polyurethane foam or the like with a skin made of, for example, a knitted fabric or leather. In order to fix the skin to the foam, a clip for locking the skin (sometimes called a "hog ring clip") has been conventionally used. Patent Document 1 discloses a clip structure including a clip provided with protrusions on the inner bottom surface and a latching bead having a notch that engages with the protrusions in order to ensure the pulling-out force.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the structure described in Patent Document 1, since the notch is cut in a direction orthogonal to the longitudinal direction, it is difficult to form by extrusion molding, and there is room for improvement in the shape of the notch. On the other hand, as shown in FIG. 5, a conventional clip 100 for locking the skin includes a receiving-side clip 120 on the side held by the foam and an insertion-side clip 130 on the side fixed to the skin. The receiving-side clip 120 includes a base 122 held by the foam and a pair of wall portions 124 erected from the surface of the base 122. The insertion-side clip 130 is formed in a long shape from the front side to the back side of the paper surface, and includes an attachment portion 132 attached to the skin and a tapered insertion portion 134 inserted into a housing space 100S provided between the pair of wall portions 124 of the receiving-side clip 120.

[0005] In such a conventional skin-locking clip 100, it is necessary to ensure a release force so that the insertion-side clip 130 does not easily come loose from the receiving-side clip 120. For this reason, each of the pair of wall portions 124 is provided with a locking claw 125 at its tip to which the insertion-side clip 130 locks, and a certain engagement allowance 100D is required at the point where the locking claw 125 and the insertion portion 134 of the insertion-side clip 130 lock together.

[0006] Furthermore, as shown in Figure 6, the insertion-side clip 130 may tilt from side to side due to pulling from the surface. Even in this case, if a certain engagement allowance 100D is not secured, the release force will decrease, so it is necessary to secure an extra engagement allowance 100D. Thus, in order to secure the release force of the insertion-side clip 130, a large force is required to insert the insertion-side clip 130. In particular, when workers perform assembly work with bare hands, there is a possibility of injuring their fingertips, and it is desirable to reduce the insertion force of the insertion-side clip 130 while ensuring the release force.

[0007] This invention has been made in view of the above facts, and aims to provide a skin-locking clip that can reduce the insertion force of the insertion-side clip while ensuring the release force of the insertion-side clip, and that can be molded more easily. [Means for solving the problem]

[0008] A skin-locking clip according to a first aspect of the present invention comprises: a receiving clip having a base held by a foam and a pair of wall portions erected opposite to each other at a predetermined distance from the surface of the base; an insertion clip having an attachment portion attached to the skin and a tapered insertion portion connected to one end of the attachment portion and inserted into a accommodating space provided between the pair of wall portions of the receiving clip; and an engaging portion having a projection provided on the bottom surface between the pair of wall portions of the receiving clip and on the insertion-side end face of the insertion portion of the insertion clip, projecting along the longitudinal direction, and a groove provided on the bottom surface between the pair of wall portions of the receiving clip and on the other insertion-side end face of the insertion portion of the insertion clip, with a groove formed along the longitudinal direction that engages with the projection.

[0009] In the first aspect of the present invention, a skin-locking clip is provided, which has a projection that protrudes along the longitudinal direction and is provided on the bottom surface between a pair of walls of the receiving clip and on one of the insertion-side end faces of the insertion portion of the insertion clip, and a groove that engages with the projection and is formed along the longitudinal direction and is provided on the other of the bottom surface between a pair of walls of the receiving clip and on the insertion-side end face of the insertion portion of the insertion clip. Therefore, by engaging the projection with the groove, the direction in which the insertion portion can be pulled out can be restricted, thereby ensuring that the insertion clip can be pulled out of the receiving clip.

[0010] On the other hand, the insertion load when inserting the insertion-side clip into the receiving-side clip is determined by the widest part of the insertion portion, i.e., the total width. In the first embodiment of the present invention, the skin-locking clip does not have a projection that protrudes beyond the total width of the insertion portion of the insertion-side clip. Therefore, compared to conventional insertion-side clips in which the projection protrudes beyond the total width, the insertion force of the insertion-side clip into the receiving-side clip can be reduced.

[0011] Furthermore, in the first embodiment of the present invention, the surface-locking clip has protrusions and grooves formed along the longitudinal direction, which makes it easier to mold the receiving clip and the insertion clip. As a result, the surface-locking clip of the first embodiment of the present invention can reduce the insertion force of the insertion clip while ensuring the release force of the insertion clip, and can be molded even more easily.

[0012] In the second aspect of the present invention, the skin-locking clip has the configuration of the first aspect, wherein the protruding portion and the groove portion are formed in a triangular shape in longitudinal cross-section.

[0013] In the second embodiment of the present invention, the skin-locking clip can better restrict the direction of withdrawal of the insertion portion compared to a circular shape, thereby ensuring a greater withdrawal force for the insertion-side clip.

[0014] A third aspect of the present invention provides a skin-locking clip comprising: a receiving clip having a base held by a foam body; a pair of wall portions erected facing each other at a predetermined distance from the surface of the base; and a projection provided at the bottom of the inner wall surface of the pair of wall portions; and an insertion clip having an attachment portion attached to the skin; and an insertion portion connected to one end of the attachment portion and inserted into a housing space provided between the pair of wall portions of the receiving clip, with its tip engaging between the projections.

[0015] The insertion load when inserting the insertion-side clip into the receiving-side clip is determined by the widest part of the insertion portion, i.e., the total width. In the third aspect of the present invention, the skin-locking clip does not have a projection that protrudes beyond the total width of the insertion portion of the insertion-side clip. Therefore, compared to conventional insertion-side clips in which the projection protrudes beyond the total width, the insertion force of the insertion-side clip into the receiving-side clip can be reduced.

[0016] Furthermore, in the third embodiment of the present invention, since the protrusion is provided at the bottom of the inner wall surface of the pair of wall portions, the insertion force can be further reduced when inserting the insertion portion into the housing space compared to the case where the protrusion is provided in the center of the inner wall surface of the pair of wall portions. In addition, since the tip of the insertion portion engages with the protrusion, the direction in which the insertion portion can be pulled out can be restricted, thus ensuring the pull-out force of the insertion-side clip. As a result, in the third embodiment of the present invention, the insertion force of the insertion-side clip can be reduced while ensuring the pull-out force of the insertion-side clip.

[0017] In the fourth aspect of the present invention, the skin-locking clip, in the configuration of the third aspect, is positioned such that the protruding portion grips the tip from both sides when the insertion portion is housed in the housing space.

[0018] In the fourth aspect of the present invention, the skin-locking clip is gripped from both sides by the tip of the insertion portion, thereby increasing the restricting force in the direction of removal.

[0019] In the fifth aspect of the present invention, the skin-locking clip, in the configuration of the third or fourth aspect, has the protruding portion extending in a direction substantially perpendicular to the insertion direction of the insertion-side clip.

[0020] In the fifth aspect of the present invention, the protruding portion extends in a direction substantially perpendicular to the insertion direction of the insertion-side clip, so that the insertion-side clip does not need to be positioned relative to the receiving-side clip, thus improving workability. Furthermore, in the fifth aspect of the present invention, since the protruding portion extends in a direction substantially perpendicular to the insertion direction of the insertion-side clip, the receiving-side clip can be formed more easily compared to a skin-locking clip having a notch cut in a direction perpendicular to the longitudinal direction.

[0021] The clip for locking the skin according to the sixth aspect of the present invention has, in the configuration of any one of the first aspect to the fifth aspect, the pair of wall portions being elastic and having locking claws at the tips that lock to the insertion portion when the insertion portion is inserted into the accommodation space.

[0022] In the clip for locking the skin according to the sixth aspect of the present invention, since the pair of wall portions are elastic and have locking claws at the tips that lock to the insertion portion when the insertion portion is inserted into the accommodation space, the pulling-out force can be further improved.

Advantages of the Invention

[0023] As described above, according to the clip for locking the skin of the present invention, while ensuring the pulling-out force of the insertion-side clip, the insertion force of the insertion-side clip can be reduced, and it can be molded more easily, having an excellent effect.

Brief Description of the Drawings

[0024] [Figure 1] It is a perspective view schematically showing the schematic configuration of the clip for locking the skin according to the first embodiment of the present invention. [Figure 2] It is a perspective view showing an example of the state where the clip for locking the skin shown in FIG. 1 is disposed on the foam of the sheet. [Figure 3] It is a front view schematically showing the state after locking of the clip for locking the skin according to the first embodiment of the present invention. [Figure 4] It is a front view schematically showing the state after locking of the clip for locking the skin according to the second embodiment of the present invention. [Figure 5] It is a front view schematically showing the functional configuration of the conventional clip for locking the skin. [Figure 6] It is a front view for explaining the problems of the conventional clip for locking the skin.

Modes for Carrying Out the Invention

[0025] The following describes the skin-locking clip 10 according to the first embodiment of the present invention with reference to Figures 1 to 3. Arrows X, Y, and Z in the figures represent the width, front-to-back, and up-and-down (insertion) directions of the skin-locking clip 10 when viewed from the longitudinal direction, respectively. Furthermore, in Figure 2, the skin 14 is omitted from the illustration to facilitate understanding of the surface shape of the foam 12. Finally, Figure 3 shows the state when cut along line AA shown in Figure 2.

[0026] The surface-locking clip 10 according to this embodiment may be used, for example, to fix a surface 14 to a foam 12 that constitutes a cushion pad of a vehicle seat, as shown in Figures 1 to 3. The surface-locking clip 10 includes a receiving clip 20, an insertion clip 30, and an engaging portion 40. In this embodiment, the application of the surface-locking clip 10 to a vehicle seat is given as an example, but it can be similarly applied to any member other than a vehicle seat in which foam is covered with a surface.

[0027] As shown in Figure 2, multiple receiving clips 20 (for example, 12 in Figure 2) can be arranged in appropriate locations within the grooves 12A provided in the foam 12. The receiving clips 20 can also be made of a material with a predetermined elasticity, such as a well-known synthetic resin, such as polyacetal (POM) or a plastic material (PC-ABS) made by mixing polycarbonate (PC) with ABS resin, and well-known resin molding methods such as injection molding can be used for molding them.

[0028] As shown in Figure 3, the receiving clip 20 includes at least a base 22 held by the foam 12, a pair of wall portions 24L, 24R erected from the surface of the base portion 22 at a predetermined distance apart in the left-right direction and facing each other, locking claws 25L, 25R provided on the inner wall surfaces of the pair of wall portions 24L, 24R, and a projection 28 provided on the bottom surface between the pair of wall portions 24L, 24R.

[0029] The receiving clip 20 can be held in place on the foam 12 by inserting it into the mold of the foam 12, for example, when foaming the foam 12, so that it is positioned at the bottom of the groove 12A. At this time, the positions in the groove 12A where the receiving clip 20 can be placed are those where the depth is set to be greater than the height of the receiving clip 20. Furthermore, it is preferable that the receiving clip 20 held in place on the foam 12 by the method described above is held in a state where at least one pair of locking claws 25L, 25R and the housing space S described later are exposed to the outside of the foam 12. Note that the method of holding the receiving clip 20 to the foam 12 is not limited to the method described above, and it may also be held by adhesive or welding, for example.

[0030] As shown in Figures 1 and 3, the base portion 22 can be made of a plate having a predetermined thickness and formed in a substantially rectangular shape. Furthermore, as shown in Figure 1, retaining portions 22A for holding the foam body 12 may extend from both the left and right ends of the base portion 22.

[0031] The pair of wall portions 24L and 24R extend upward substantially perpendicularly from both left and right ends of the base portion 22 and are elastic in the width direction. The locking claws 25L and 25R are formed to extend from the inside of the tips of the pair of wall portions 24L and 24R toward each other and inclined at a predetermined angle with respect to the left and right direction, with their tips toward the base portion 22. The gap formed between the tips of these locking claws 25L and 25R defines the insertion opening into which the insertion-side clip 30 is inserted. In addition, a pair of tapered surfaces 26L and 26R are formed on the left and right sides of this insertion opening to guide the insertion of the insertion-side clip 30. The tapered surfaces 26L and 26R are widened toward upward, and as the insertion-side clip 30 is guided by these tapered surfaces 26L and 26R and moves toward the insertion opening, the pair of wall portions 24L and 24R are elastically deformed in the width direction.

[0032] The area enclosed by the base portion 22, the pair of wall portions 24L and 24R, and the locking claws 25L and 25R can function as a accommodating space S for the insertion portion 34 of the insertion-side clip 30, which will be described later.

[0033] Furthermore, the bottom surface between the pair of wall portions 24L and 24R, i.e., the upper surface of the base portion 22, is provided with a projection 28 that protrudes in the opposite direction to the insertion direction of the insertion-side clip 30 (-Z direction; for example, the direction corresponding to arrow M; hereinafter also referred to as "insertion direction M") in the receiving space S, i.e., in the Z direction. The projection 28 extends, for example, along the longitudinal direction (Y direction) of the receiving-side clip 20.

[0034] As shown in Figure 3, the insertion-side clip 30 is partially inserted into and fixed in the receiving space S of the receiving-side clip 20 described above, thereby enabling the skin 14 to be fixed to the foam 12. The insertion-side clip 30, like the receiving-side clip 20, can be made of a well-known synthetic resin, and a well-known resin molding method can be used for its molding. The insertion-side clip 30 is made of an elastic material, like the receiving-side clip 20, but it is more preferable that it be made of a more flexible material than the receiving-side clip 20.

[0035] The insertion-side clip 30 is formed in an elongated shape and, as shown in Figures 1 and 3, comprises at least an attachment portion 32 to which one end of the skin 14 can be attached, and an insertion portion 34 connected to the other end located below the attachment portion 32 and insertable into the receiving-side clip 20's storage space S.

[0036] The mounting portion 32 can be made of a plate-like body, and the edges of the outer skin 14 are directly or indirectly attached to one or both sides thereof. As for the method of attaching the outer skin 14 to the mounting portion 32, for example, sewing can be used, but it is not limited to this, and other attachment methods such as using adhesive or rivets or welding can also be used.

[0037] The insertion portion 34 is connected to one end of the mounting portion 32, specifically to the end of the insertion-side clip 30 on the insertion direction M side, and connects the receiving-side clip 20 and the insertion-side clip 30 by being inserted into the housing space S of the receiving-side clip 20. As shown in Figure 3, the insertion portion 34 has a tapered shape that gradually narrows in the left-right direction toward the tip side that faces the receiving-side clip 20 when the insertion-side clip 30 is inserted into the housing space S along the insertion direction M. In this embodiment, as an example, the insertion portion 34 is formed in a substantially triangular cross-section with its apex located toward the tip side.

[0038] The total width H of the insertion portion 34 is smaller than the total width 100H of the conventional insertion portion 134 shown in Figure 7. Specifically, the total width H of the insertion portion 34 is narrowed to the limit that ensures sufficient release force so that the insertion-side clip 30, which is provided with the groove portion 36 described later, does not easily come out of the receiving-side clip 20.

[0039] Furthermore, the insertion portion 34 is provided with a groove 36 on its insertion end face, i.e., the tip face in the insertion direction M. The groove 36 is formed by a groove that engages with the projection 28 of the receiving clip 20, which is formed along the longitudinal direction (Y direction). In this embodiment, the engagement portion 40 is formed by the projection 28 and the groove 36. As an example, the projection 28 and the groove 36 are formed in a roughly triangular shape when cut in the longitudinal section, i.e., in the Z direction.

[0040] Next, the operation and effects of the first embodiment will be described.

[0041] In the first embodiment, as shown in Figure 1, the skin-locking clip 10 fixes the skin 14 to the foam 12 by inserting the insertion-side clip 30, to which the skin 14 is attached, into the receiving-side clip 20, which is held by the foam 12. Specifically, in order to attach the skin 14 to the foam 12, first, the base 22 of the receiving-side clip 20 is held in place at an arbitrary position within the groove 12A of the foam 12, and the skin 14 is attached to the mounting portion 32 of the insertion-side clip 30. Next, the insertion-side clip 30 with the skin 14 attached is moved along the insertion direction M, and insertion into the receiving-side clip 20 is started.

[0042] As the insertion-side clip 30 moves in the insertion direction M, the tapered surfaces 26L and 26R first come into contact with the widthwise side surface of the insertion portion 34. As the insertion-side clip 30 continues to move, the tapered surfaces 26L and 26R are pressed against the insertion portion 34, causing the pair of wall portions 24L and 24R to elastically deform, increasing their width in the left-right direction. As the insertion portion 34 continues to move further, the projection 28 of the receiving-side clip 20 fits into the groove 36 of the insertion-side clip 30. In this state, the entire insertion portion 34 is located within the housing space S, and the pair of wall portions 24L and 24R, which were pressed against by the insertion portion 34 and elastically deformed to a large width in the left-right direction, return to their original state as shown in Figure 3, with their width in the left-right direction decreasing. In this state, the groove 36 and the projection 28 are engaged by the engaging portion 40. The upper end of the insertion portion 34 (the end opposite to the insertion direction M) is then locked by the lower ends of the locking claws 25L and 25R. In this way, the insertion-side clip 30 is held by the receiving-side clip 20.

[0043] In this manner, the insertion clip 30 held by the receiving clip 20 may be subjected to a load in the direction of arrow N, i.e., left or right, due to pulling from the skin 14, for example, as shown in Figure 3. In this case, since the projection 28 of the insertion clip 30 is engaged with the groove 36, the tilting of the insertion portion 34 can be suppressed, and the direction in which the insertion portion 34 can be removed can be restricted. This ensures that the force that allows the insertion clip 30 to be removed from the receiving clip 20 is maintained.

[0044] On the other hand, the insertion load when inserting the insertion-side clip 30 into the receiving-side clip 20 is determined by the widest part of the insertion portion 34, i.e., the total width H. As shown in Figure 3, the insertion-side clip 30 of this embodiment does not have a projection that protrudes beyond the total width H of the insertion portion 34. Therefore, compared to conventional insertion-side clips in which the projection protrudes beyond the total width H, the insertion force of the insertion-side clip 30 into the receiving-side clip 20 can be reduced. As a result, the skin-locking clip 10 of the present invention can reduce the insertion force of the insertion-side clip 30 while ensuring the release force of the insertion-side clip 30.

[0045] Furthermore, in the skin-locking clip 10 of this embodiment, the groove 36 extends in a direction substantially perpendicular to the insertion direction M, that is, along the Y direction of the insertion portion 34. Therefore, the insertion-side clip 30 does not require positioning relative to the receiving-side clip 20, thus improving work efficiency.

[0046] Furthermore, in the skin-locking clip 10 of this embodiment, since the protruding portion 28 and the groove portion 36 are formed along the longitudinal direction (Y direction), the receiving clip 20 and the insertion clip 30 can be molded more easily compared to a skin-locking clip having a notch cut in a direction perpendicular to the longitudinal direction. As a result, the skin-locking clip 10 of this embodiment can reduce the insertion force of the insertion clip 30 while ensuring the release force of the insertion clip 30, and can be molded even more easily.

[0047] Furthermore, in the skin-locking clip 10 of this embodiment, the protruding portion 28 and the groove portion 36 are formed in a triangular shape in their longitudinal cross-section. Therefore, compared to a circular shape, the direction of withdrawal of the insertion portion 34 can be more restricted, and thus the withdrawal force of the insertion-side clip 30 can be more securely ensured.

[0048] Furthermore, in the skin-locking clip 10 of this embodiment, the pair of wall portions 24L and 24R are elastic, and the tip is equipped with locking claws 25L and 25R that lock onto the insertion portion 34 when the insertion portion 34 is inserted into the housing space S, thereby improving the release force of the insertion-side clip 30.

[0049] Next, the skin-locking clip 10A according to the second embodiment of the present invention will be described with reference to Figure 4. Arrows X, Y, and Z in the figure indicate the width, front-to-back, and up-and-down (insertion) directions of the skin-locking clip 10A when viewed from the longitudinal direction, respectively. Figure 4 shows the state when cut along line AA shown in Figure 2. In this embodiment, as in the embodiment described above, components are indicated by the same reference numerals and their descriptions are omitted; only the different components will be described.

[0050] As shown in Figure 4, the skin-locking clip 10A according to this embodiment comprises a receiving clip 20A and an insertion clip 30A. The skin-locking clip 10A according to this embodiment does not have the engaging portion 40 of the first embodiment, and instead has a pair of protrusions 29L and 29R.

[0051] As shown in Figure 4, the receiving clip 20A does not have the protruding portion 28 as the engaging portion 40 of the first embodiment, but has a pair of protruding portions 29L and 29R. The pair of protruding portions 29L and 29R are provided at the bottom of the inner wall surfaces of the pair of wall portions 24L and 24R. That is, the pair of protruding portions 29L and 29R are provided on the base portion 22 side of the center in the Y direction (insertion direction M) of the inner wall surfaces of the pair of wall portions 24L and 24R. In other words, the pair of protruding portions 29L and 29R are provided in a position to grip the tip of the insertion portion 34 from both sides when the insertion portion 34 is housed in the housing space S. As an example, the tips of the protruding portions 29L and 29R are formed in a substantially triangular shape. However, the shape of the tip is not limited to a substantially triangular shape, and may be formed as a curved surface or can be changed as appropriate.

[0052] The pair of protrusions 29L and 29R extend in the Y direction, which is substantially perpendicular to the insertion direction M, i.e., in the longitudinal direction of the receiving clip 20.

[0053] As shown in Figure 4, the insertion-side clip 30A does not have the groove 36 which serves as the engaging portion 40 in the first embodiment.

[0054] Next, the operation and effects of the second embodiment will be described.

[0055] In the second embodiment, as shown in Figure 1, the skin-locking clip 10A fixes the skin 14 to the foam body 12 by inserting the insertion-side clip 30A, to which the skin 14 is attached, into the receiving-side clip 20A, which is held by the foam body 12. Specifically, in order to attach the skin 14 to the foam body 12, first, the base 22 of the receiving-side clip 20A is held in place at an arbitrary position within the groove 12A of the foam body 12, and the skin 14 is attached to the mounting portion 32 of the insertion-side clip 30A. Next, the insertion-side clip 30A with the skin 14 attached is moved along the insertion direction M, and insertion into the receiving-side clip 20A is started.

[0056] As the insertion clip 30A moves in the insertion direction M, the tapered surfaces 26L and 26R first come into contact with the widthwise side surface of the insertion portion 34. Subsequently, as the insertion clip 30A continues to move, the tapered surfaces 26L and 26R are pressed against the insertion portion 34, causing the pair of wall portions 24L and 24R to elastically deform, increasing their width in the left-right direction. Then, as the insertion portion 34 continues to move, its tip extends beyond the protruding portions 29L and 29R and is positioned in the lower storage space S between the protruding portions 29L and 29R.

[0057] In this state, the entire insertion portion 34 is located within the housing space S, and the pair of wall portions 24L and 24R, which have been pressed by the insertion portion 34 and elastically deformed to a large extent in the left-right direction, return to their original state as shown in Figure 4, with their left-right width reduced. In this state, the tip of the insertion portion 34 is gripped from both sides by the protruding portions 29L and 29R. The upper end of the insertion portion 34 (the end opposite to the insertion direction M) is locked by the lower ends of the locking claws 25L and 25R. In this way, the insertion-side clip 30A is held by the receiving-side clip 20A.

[0058] In this manner, the insertion clip 30A held by the receiving clip 20A may be subjected to a load in the direction of arrow N, i.e., left or right, due to pulling from the skin 14, for example, as shown in Figure 4. In this case, since the tip of the insertion portion 34 of the insertion clip 30A is gripped from both sides by a pair of protrusions 29L and 29R, tilting of the insertion portion 34 can be suppressed, and the direction in which the insertion portion 34 can be removed can be restricted. This ensures that the force that allows the insertion clip 30A to be removed from the receiving clip 20A is maintained.

[0059] On the other hand, the insertion load when inserting the insertion-side clip 30A into the receiving-side clip 20A is determined by the widest part of the insertion portion 34, i.e., the total width H. As shown in Figure 4, the insertion-side clip 30A of this embodiment does not have a projection that protrudes beyond the total width H of the insertion portion 34. Therefore, compared to conventional insertion-side clips in which the projection protrudes beyond the total width H, the insertion force of the insertion-side clip 30A into the receiving-side clip 20A can be reduced. As a result, the skin-locking clip 10A of the present invention can reduce the insertion force of the insertion-side clip 30A while ensuring the release force of the insertion-side clip 30A.

[0060] Furthermore, in the skin-locking clip 10A of this embodiment, the pair of protrusions 29L and 29R extend in the Y direction, which is substantially perpendicular to the insertion direction M, that is, along the longitudinal direction of the receiving clip 20A. Therefore, the insertion clip 30A does not require positioning relative to the receiving clip 20A, thus improving work efficiency.

[0061] Furthermore, in the skin-locking clip 10A of this embodiment, the pair of protrusions 29L and 29R of the receiving clip 20A are formed along the longitudinal direction (Y direction), and the insertion clip 30A does not have any protrusions or notches. As a result, the receiving clip 20A and the insertion clip 30A can be molded more easily compared to a skin-locking clip having notches cut in a direction perpendicular to the longitudinal direction. Consequently, the skin-locking clip 10A of this embodiment can reduce the insertion force of the insertion clip 30A while ensuring the release force of the insertion clip 30A, and can be molded even more easily.

[0062] Furthermore, in the skin-locking clip 10A of this embodiment, the protruding portions 29L and 29R are formed in a substantially triangular shape in their longitudinal cross-section. Therefore, compared to a circular shape, the direction of withdrawal of the insertion portion 34 can be more restricted, thus ensuring greater withdrawal force for the insertion-side clip 30A.

[0063] Furthermore, in the skin-locking clip 10A of this embodiment, the pair of wall portions 24L and 24R are elastic, and the tip is equipped with locking claws 25L and 25R that lock onto the insertion portion 34 when the insertion portion 34 is inserted into the housing space S, thereby further improving the release force of the insertion-side clip 30A.

[0064] [Supplementary explanation] In the first embodiment described above, the protruding portion 28 and groove portion 36, which constitute the engaging portion 40, are formed in a substantially triangular shape when viewed in a longitudinal section, i.e., a cross-section in the Z-direction. However, the present invention is not limited to this. The protruding portion 28 and groove portion 36 may, for example, have a substantially semicircular cross-section, or a rectangular cross-section, and can be modified as appropriate.

[0065] Furthermore, in the second embodiment described above, the pair of protrusions 29L and 29R each extend in a direction substantially perpendicular to the insertion direction M, but the present invention is not limited thereto. The pair of protrusions 29L and 29R may be provided continuously in multiple locations at predetermined intervals in the Y direction of the pair of wall portions 24L and 24R.

[0066] Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above, and can be implemented in various other ways without departing from the spirit of the invention. [Explanation of Symbols]

[0067] 10, 10A Skin-locking clips 12 Foam 14 Epidermis 20, 20A receiving clip 22 Base 24L, 24R Pair of wall sections (wall sections) 25L, 25R locking claw 28 Projection part (engaging part) 29L, 29R A pair of protrusions (protrusions) 30, 30A Insertion side clip 32 Mounting part 34 Insertion part 36 Groove (engaging portion) 40 Engagement part H Total width S Containment space

Claims

1. A base held in the foam, A pair of wall portions erected facing each other at a predetermined distance from the surface of the base, A receiving clip equipped with, A mounting part that is attached to the surface, A tapered insertion portion is connected to one end of the mounting portion and inserted into a housing space provided between the pair of wall portions of the receiving clip, An insertion-side clip equipped with, A projection is provided on the bottom surface between the pair of walls of the receiving clip and on one of the insertion-side end faces of the insertion portion of the insertion clip, and the projection is provided along the longitudinal direction. An engaging portion having a groove portion provided on the bottom surface between the pair of wall portions of the receiving clip and on the other end surface of the insertion portion of the insertion part of the insertion clip, the groove having a groove formed along the longitudinal direction that engages with the protruding portion, A clip for securing the surface, equipped with the necessary components.

2. The skin-locking clip according to claim 1, wherein the protruding portion and the groove portion are formed in a triangular shape in their longitudinal cross-section.

3. A base held in the foam, A pair of wall portions erected facing each other at a predetermined distance from the surface of the base, A protrusion provided at the bottom of the inner wall surface of the pair of wall sections, A receiving clip equipped with, A mounting part that is attached to the surface, An insertion portion is connected to one end of the mounting portion and inserted into a housing space provided between the pair of wall portions of the receiving clip, with its tip engaging between the protruding portions, An insertion-side clip equipped with, A clip for securing the surface, equipped with the necessary components.

4. The skin-locking clip according to claim 3, wherein the protruding portion is positioned to grip the tip from both sides when the insertion portion is housed in the housing space.

5. The skin-locking clip according to claim 3, wherein the protruding portion extends in a direction substantially perpendicular to the insertion direction of the insertion-side clip.

6. The skin-locking clip according to claim 1 or 3, wherein the pair of wall portions are elastic and have locking claws at their tips that engage with the insertion portion when the insertion portion is inserted into the housing space.

Images