Cushion clip

Abstract

To provide a cushion clip that restricts a movable region when a movable claw is elastically deformed, and suppresses generation of a crack between a fitting part.SOLUTION: A cushion clip 1 capable of being fitted to a fitting object having a fitting hole includes: an axial fitting part 2 capable of being inserted into the fitting hole; and a cushion part 4 having an outer diameter larger than a shaft diameter of the fitting part 2, and integrally formed continuously to a second side end portion of the fitting part 2. The fitting part 2 includes: a shaft part 11 extending with a central axis C1 as the center; an elastically deformable movable claw 3; and a space part 10 permitting deformation of the movable claw 3 in the inside in the radial direction of the shaft part 11. The movable claw 3 has a connection part 5 for connecting between the shaft part 11 and / or the cushion part 4 at least in a part of the peripheral edge part. A thickness t1 of the thinnest part of the connection part 5 is formed to be thinner than a distance t2 between an outer peripheral surface 11a of the shaft part 11 and the space part 10.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a cushion clip attached to a vehicle or the like.

Background Art

[0002] Conventionally, a cushion clip used by being inserted into a mounting hole of a mounting member such as a vehicle has been proposed. For example, according to Patent Document 1, an anchor made of a hard resin material includes an elastic arm, and when this anchor is inserted into a mounting hole of a plate-shaped mounting member, the elastic arm advances while being bent inward, and a locking claw of the elastic arm locks to the edge of the mounting hole. The locking surface of the locking claw that contacts the edge of the mounting hole is covered with a cushion made of a soft elastic material in a state where the locking claw of the elastic arm is locked to the mounting hole of the mounting member.

[0003] More preferably, in the anchor, an outer surface that may come into contact with the inner periphery of the mounting hole is covered with a cushion made of a soft elastic material similar to the locking surface of the locking claw in the elastic arm.

[0004] Even more preferably, it is configured as follows. That is, a buffer body for absorbing an impact when hitting a mating member that approaches or separates relative to the mounting member with respect to the anchor is integrally joined by two-color molding. And the cushion covering the locking surface of the locking claw in the elastic arm and the outer surface of the anchor and the buffer body are integrally and continuously molded.

[0005] Even more preferably, the communication portion between the buffer body and the cushion covering the locking surface of the locking claw in the elastic arm is set to a thickness that does not hinder the bending operation of the elastic arm with respect to the anchor.

[0006] According to this, in the elastic arm of the anchor, since the locking surface of the locking claw is covered with a cushion, dimensional tolerances of the plate thickness of the mounting member or dimensional variations due to burrs or paint puddles generated on the periphery of the mounting hole can be absorbed by the deformation of the cushion. As a result, the locking claw of the elastic arm can always be properly locked to the edge of the mounting hole. Further, since the anchor and the elastic arm remain as a hard resin material, the resistance when the anchor is inserted into the mounting hole is kept small, and a low insertion load can be maintained.

[0007] In addition to the locking surface of the locking claw in the elastic arm being covered with a cushion, since the outer surface of the anchor is covered with a cushion, these cushions can suppress rattling of the clip with respect to the mounting member and prevent the occurrence of abnormal noises.

[0008] Furthermore, since the cushions on the locking surface of the locking claw and the outer surface of the anchor are integrally and continuously molded with the buffer body, the cushions can be molded by utilizing a process of two-color molding the buffer body for impact absorption with respect to the anchor.

[0009] Furthermore, it is described that since the communication portion between the buffer body and the cushion of the elastic arm is set to a wall thickness that does not hinder the bending movement of the elastic arm, the function of holding the clip in a state attached to the mounting member is properly maintained even though this cushion is molded by utilizing a process of two-color molding the buffer body.

Prior Art Documents

Patent Documents

[0010]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0011] However, the configuration of Patent Document 1 has the following problems. The following is described by changing the element names in Patent Document 1 to the element names corresponding to the element names of the present invention. The element names to be changed are as follows: the anchor 10 is changed to the mounting portion 32, the base 14 and the buffer 30 are combined into the cushion portion 34, the support column 16 is changed to the shaft portion 41, the elastic arm 24 and the locking claw are changed to the movable claw 33, the mounting member 50 is changed to the object to be mounted 20, and the mounting hole 52 is changed to the mounting hole 21. Further, the clip which is the object of Patent Document 1 is changed to the cushion clip 31.

[0012] This will be described with reference to FIGS. 12 and 13. As shown in FIG. 12, in the conventional example of Patent Document 1, the components of the cushion clip 31 are roughly classified into a cushion portion 34, a mounting portion 32 protruding from the central portion of the mold side surface in the cushion portion 34, and a pair of movable claws 33 located on both sides of the mounting portion 32. The mounting portion 32 is a portion that is inserted together with the pair of movable claws 33 into the mounting hole 21 that has been previously opened in a penetrating state in the object to be mounted. For this reason, the tip of the mounting portion 32 has a conical shape that is easy to insert into the mounting hole 21. The pair of movable claws 33 are connected integrally with the mounting portion 32 only on the side of the tip of the mounting portion 32, and can be bent in the inner and outer directions by elastic deformation of the resin material with that as the fulcrum. That is, as shown in FIG. 12, the peripheral edge portion of the movable claw 33 is the space portion 40, and the movable claw 33 is connected to the mounting portion 32 only at the end portion on the first side in the central axis direction. The movable claw 33 has no restricted movable region in either the inner or outer direction in the radial direction.

[0013] The conventional example described in Patent Document 1 has the following problems due to this configuration. FIG. 13 shows a state where the slide mold 52 is released from the product when forming the cushion clip 31 as an example. FIG. 13(a) shows a state where the formation of the cushion clip 31 is completed, and from here, as shown in FIG. 13(b), the slide mold 52 is released. At this time, if the movable claw 33 of the product cannot be smoothly released from the slide mold 52, as shown in FIG. 13(c), the movable claw 33 will be pulled by the movement of the slide mold 52 and open outward in the radial direction. Then, as shown in FIGS. 12 and 13(c), cracks 53 may occur in the connection part with the mounting part 32, which may cause defects. Also, not only when releasing the product formation, but since the deformation of the movable claw 33 outward in the radial direction cannot be restricted, when a plurality of cushion clips 31 are packed together during transportation or the like, the movable claw 33 may get caught on something else, and cracks 53 may occur.

[0014] An object of the present invention is to solve the problems of the prior art, and to provide a cushion clip that restricts the movable region when the movable claw elastically deforms and suppresses the occurrence of cracks between the mounting part.

Means for Solving the Problems

[0015] The cushion clip according to an aspect of the present invention is attachable to an object to be attached having a mounting hole. Taking the side inserted into the object to be attached as the first side and the opposite side as the second side, it includes a shaft-shaped mounting portion insertable into the mounting hole, and a cushion portion having an outer diameter larger than the shaft diameter of the mounting portion and integrally formed continuously at the end of the mounting portion on the second side. The mounting portion includes a shaft portion extending around a central axis, a movable claw that can be elastically deformed, and a space portion inside the mounting portion in the radial direction for allowing deformation of the movable claw. The movable claw includes a connecting portion connecting at least a part of the peripheral edge to the shaft portion and / or the cushion portion. The thinnest part of the connecting portion is formed thinner than the distance between the outer peripheral surface of the shaft portion and the space portion. When the first side of the mounting portion is inserted into the mounting hole, the movable claw is elastically deformed and returns after insertion, so that the object to be attached can be attached by sandwiching the periphery of the mounting hole between the end of the movable claw on the second side and the end of the cushion portion on the first side.

[0016] According to this, the movable claw of the cushion clip includes a connecting portion connecting at least a part of the peripheral edge to the mounting portion and / or the cushion portion. When the movable claw is elastically deformed, the connecting portion restricts the movable region, so that problems such as the occurrence of cracks or breakage between the shaft portion can be reduced.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0018] Hereinafter, with reference to the drawings, the cushion clip 1 embodying the present invention will be described. The mode for carrying out the invention and the drawings referred to are used to explain the technical features that the present invention can adopt. The present invention is not limited to these. The configurations shown in the drawings are not intended to be limited thereto, but are merely illustrative examples.

[0019] <Explanation of the overall configuration of the cushion clip 1> With reference to the drawings, the overall configuration of the cushion clip 1 according to an aspect of the present invention will be described. The cushion clip 1 can be attached to an attachment object 20 having an attachment hole 21. This will be described with reference to FIGS. 1 to 3. The side to be inserted into the attachment object 20 is defined as the first side, and the opposite side is defined as the second side. It includes a shaft-shaped attachment part 2 that can be inserted into the attachment hole 21, and a cushion part 4 having an outer diameter larger than the shaft diameter of the attachment part 2 and continuously and integrally formed at the end of the second side of the attachment part 2. The attachment part 2 includes a shaft part 11 extending around the central axis C1, a movable claw 3 that can be elastically deformed, and a space part 10 that allows deformation of the movable claw 3 inside the attachment part 2 in the radial direction. As shown in FIG. 1, the inner and outer sides in the radial direction are defined around the central axis C1. Further, the circumferential direction around the central axis C1 is defined.

[0020] The object 20 to which the cushion clip 1 is attached is, for example, an automobile door and is used as a door cushion. As shown in FIG. 3, the end portion on the first side in the attachment portion 2 is formed in a frustum shape and is easily inserted into the attachment hole 21. As shown in FIG. 1 and the like, the cushion clip 1 includes, for example, a pair of movable claws 3 and a pair of fixed claws 7. FIG. 11 shows a state in which the fixed claw 7 is inserted into the attachment hole 21. The fixed claw 7 does not have a space portion 10 that allows elastic deformation like the movable claw 3, and the entire shaft portion 11 is elastically deformed and inserted into the attachment hole 21. In the example shown in FIG. 1 and the like, it includes a pair of movable claws 3 and a pair of fixed claws 7, but is not limited thereto. For example, although not shown, there may be three movable claws 3 and three fixed claws 7, and the movable claws 3 and the fixed claws 7 may be alternately arranged in the circumferential direction. Or, it may include two pairs of movable claws 3 and no fixed claws 7. In addition, the number and arrangement positions of the movable claws 3 and the fixed claws 7 can be arbitrarily set.

[0021] The movable claw 3 includes a connecting portion 5 that connects at least a part of the peripheral edge to the shaft portion 11 and / or the cushion portion 4. As shown in FIGS. 5 and 6, the thickness t1 of the thinnest part of the connecting portion 5 is formed to be thinner than the distance t2 between the outer peripheral surface 11a of the shaft portion 11 and the space portion 10. As shown in FIG. 2, when the first side of the attachment portion 2 is inserted into the attachment hole 21, the movable claw 3 is elastically deformed and returns after insertion, so that the peripheral edge of the attachment hole 21 is sandwiched between the end portion on the second side of the movable claw 3 and the end portion on the first side of the cushion portion 4, and can be attached to the attachment object 20.

[0022] The material of the cushion clip 1 is, for example, EPDM, and in addition, rubber, elastomer, or resin other than EPDM can be used. The connecting portion 5 is formed, for example, with a thin wall between 0.1 mm and 0.3 mm. The connecting portion 5 is formed on the peripheral edge of the movable claw 3. If the thickness is too thick, it will become a resistance during movement, and the resistance when inserting the cushion clip 1 into the mounting hole 21 will increase. Conversely, if the thickness of the connecting portion 5 is too thin, the movable claw 3 will tear when elastically deformed. The upper limit of the thickness of the connecting portion 5 is set so that the resistance during insertion is below a predetermined value in accordance with the shape of the movable claw 3. The predetermined value during insertion is, for example, 60 N or less. Also, the lower limit of the thickness of the connecting portion 5 is set so as not to tear in the assumed movable region of the movable claw 3. The cushion portion 4 has an outer diameter of about 18 mm to 25 mm and a thickness in the central axis direction of about 7 mm to 12 mm, but these dimensions can be arbitrarily set according to the intended use.

[0023] As shown in FIGS. 1, 3, and 5, for the cushion clip 1, the gate position 8 for injecting the material during molding is formed near the central axis C1 at the end of the first side of the mounting portion 2. The movable claw 3 and the connecting portion 5 are formed closer to the gate position 8 than the cushion portion 4 in the direction of the central axis C1.

[0024] <Effect of the overall configuration of the cushion clip 1> According to the overall configuration of the cushion clip 1 according to the aspect of the present invention described above, the following effects are achieved. The movable claw 3 of the cushion clip 1 is provided with a connecting portion 5 that connects at least a part of the peripheral edge to the shaft portion 11 and / or the cushion portion 4. When the movable claw 3 elastically deforms, the connecting portion 5 restricts the movable region, so that problems such as the occurrence of cracks or breakage between the shaft portion 11 can be reduced.

[0025] Since the thickness t1 of the thinnest part of the connecting portion 5 is formed to be thinner than the distance t2 between the outer peripheral surface 11a of the shaft portion 11 and the space portion 10, the resistance when inserting the cushion clip 1 into the mounting hole 21 can be made below a predetermined value. Further, since the thickness t1 of the connecting portion 5 is set so that tearing does not occur in the movable region of the movable claw 3, defective parts during molding or conveyance can be reduced.

[0026] Also, since the movable claw 3 and the connecting portion 5 of the cushion clip 1 are formed closer to the gate position 8 than the cushion portion 4 in the direction of the central axis C1, it is possible to reduce the problem that the connecting portion 5 becomes defective in filling during molding. In particular, since the connecting portion 5 is thin, there is a risk of defective filling if it is far from the gate position 8. On the other hand, since the end portion on the first side of the connecting portion 5 is close to the gate position 8, defective filling during molding can be reduced.

[0027] <Description of the configuration of the connecting portion 5> Next, the configuration of the connecting portion 5 will be described. The connecting portion 5 can have various forms. FIG. 4 is a detailed view of part A in FIG. 2 and shows various forms of the connecting portion 5. In FIG. 4, the lattice-like hatching portion indicates the connecting portion 5. Among the examples of the connecting portion 5, the first connecting portion 5a shown in FIG. 4(a) is formed on the entire peripheral edge of the movable claw 3 and connects between the shaft portion 11 and the cushion portion 4. In this example, the entire concave portion 6 between the movable claw 3, the shaft portion 11, and the cushion portion 4 is connected by the first connecting portion 5a, and the space portion 10 is in a closed state when viewed from the outer peripheral surface 11a of the shaft portion 11.

[0028] Among the examples of the connecting portion 5, the second connecting portion 5b shown in FIG. 4(b) is formed on the entire peripheral edge of the movable claw 3, similar to the first connecting portion 5a, and connects between the shaft portion 11, but a part of the space portion 10 is exposed between the second connecting portion 5b and the cushion portion 4. Among the examples of the connecting portion 5, the third connecting portion 5c shown in FIG. 4(c) is formed on the entire peripheral edge of the movable claw 3 and connects between the shaft portion 11 and the cushion portion 4, but a triangular space portion 10 is exposed between the movable claw 3 and the cushion portion 4.

[0029] Next, among the examples of the connecting portion 5, the fourth connecting portion 5d shown in FIG. 4(d) is formed from the end portion on the second side of the movable claw 3 to the cushion portion 4 along the direction of the central axis C1. In this example, the space portion 10 is exposed between the end portion of the movable claw 3 in the circumferential direction and the shaft portion 11.

[0030] Next, among the examples of the connecting portion 5, the fifth connecting portion 5e shown in FIG. 4(e) is formed from the end portion of the movable claw 3 in the circumferential direction to the shaft portion 11. In this example, the space portion 10 is exposed between the movable claw 3 and the cushion portion 4.

[0031] Referring to FIG. 5, the cross-sectional shape of the connecting portion 5 will be described. FIG. 5(a) shows the cross-section I-I in FIG. 1, and the connecting portion 5 corresponds to the first connecting portion 5a in FIG. 4(a) and the fourth connecting portion 5d in FIG. 4(d). The connecting portion 5 is formed such that the minimum thickness t1 is smaller than the distance t2 between the outer peripheral surface 11a of the shaft portion 11 and the space portion 10 between the movable claw 3 and the cushion portion 4. The inner surface 15 of the connecting portion 5 in the radial direction is continuously formed with the inner surface 13 of the movable claw 3 in the radial direction. In the example shown in FIG. 5, there is no step between the inner surface 13 of the movable claw 3 and the inner surface 15 of the connecting portion 5, and they are linearly connected along the direction of the central axis C1. Further, as shown in FIG. 5(b), curved surfaces r are formed at the connecting portions of the connecting portion 5 with the movable claw 3 and the cushion portion 4, respectively, to reduce the occurrence of stress concentration when the movable claw 3 is elastically deformed.

[0032] Referring to FIG. 6, the cross-sectional shape of the connecting portion 5 will be described. FIG. 6 shows cross-sections II-II and III-III in FIG. 1. Cross-sections II-II and III-III have the same shape. The connecting portion 5 shown in FIG. 6 corresponds to the first connecting portion 5a in FIG. 4(a) and the third connecting portion 5c in FIG. 4(c). Also, the second connecting portion 5b in FIG. 4(b) corresponds to the portion from the first side end in the central axis direction to midway between the second side end of the movable claw 3 and the cushion portion 4. The fifth connecting portion 5e in FIG. 4(e) corresponds to the portion from the first side end in the central axis direction to the second side end of the movable claw 3. Similar to the example shown in FIG. 5, the inner surface 15 of the connecting portion 5 in the radial direction is continuously formed on the inner surface 11b of the shaft portion 11 in the radial direction. In the example shown in FIG. 6, there is no step between the inner surface 11b of the shaft portion 11 and the inner surface 15 of the connecting portion 5, and they are linearly connected along the direction of the central axis C1. Also, as shown in FIG. 6(b), curved surfaces r are formed at the connection portions of the connecting portion 5 with the shaft portion 11 and the cushion portion 4, respectively, to reduce the occurrence of stress concentration when the movable claw 3 is elastically deformed.

[0033] Referring to FIG. 9, the cross-sectional shape of the connecting portion 5 will be described. FIG. 9 shows cross-section IV-IV in FIG. 2, and corresponds to the first connecting portion 5a in FIG. 4(a), the second connecting portion 5b in FIG. 4(b), the third connecting portion 5c in FIG. 4(c), and the fifth connecting portion 5e in FIG. 4(e). It is formed to extend in the circumferential direction from the end portion of the movable claw 3 in the circumferential direction to the shaft portion 11, or is formed to extend in the tangential direction from the end portion of the movable claw 3 in the circumferential direction to the shaft portion 11. In the example shown in FIG. 9, the connecting portion 5 is formed to extend in the circumferential direction from the end portion of the movable claw 3 in the circumferential direction to the shaft portion 11. In the example shown in FIG. 9, there is no step between the inner surface 13 of the movable claw 3 and the inner surface 15 of the connecting portion 5, and they are curvedly connected along the circumferential direction. Also, as shown in FIG. 9(b), curved surfaces r are formed at the connection portions of the connecting portion 5 with the movable claw 3 and the shaft portion 11, respectively, to reduce the occurrence of stress concentration when the movable claw 3 is elastically deformed.

[0034] As shown in FIGS. 2, 5, and 6, the connecting portion 5 is formed in the recess 6 from the outer periphery of the shaft portion 11. As shown in FIGS. 4(a) and 6(b), the recess 6 starts from the second side by a distance L1 from the starting point 3a on the first side where the movable claw 3 is formed in the direction of the central axis C1, and is formed up to the cushion portion 4 at the peripheral edge of the movable claw 3.

[0035] <Explanation of the behavior of the connecting portion 5> Next, with reference to FIGS. 7, 8, and 10, the behavior of the connecting portion 5 accompanying the elastic deformation of the movable claw 3 will be described. Here, the case where the connecting portion 5 is the first connecting portion 5a shown in FIG. 4(a) will be described as an example. As shown in FIG. 7, the movable claw 3 is elastically deformable in the radial inner and outer directions. First, the case where the movable claw 3 elastically deforms radially inward will be described. When the movable claw 3 is inserted into the mounting hole 21, it deforms in the R1 direction shown in the figure. As shown in FIG. 7(a), between the movable claw 3 and the cushion portion 4 of the connecting portion 5, it deforms while stretching and becomes a refracted state inside the space portion 10. Also, as shown in FIG. 10(a), between the movable claw 3 and the shaft portion 11 of the connecting portion 5, it refracts radially inward. At this time, the connecting portion 5 is particularly likely to refract at the connection portion with the movable claw 3 and the connection portion with the shaft portion 11, and stress is likely to concentrate. On the other hand, as described with reference to FIGS. 5(b), 6(b), and 9(b), in order to avoid stress concentration, a curved surface r is formed at the connection portion.

[0036] Next, the case where the movable claw 3 elastically deforms radially outward will be described. As shown in FIG. 7(b), between the movable claw 3 and the cushion portion 4 of the connecting portion 5, it deforms radially outward while stretching. Also, as shown in FIG. 10(b), between the movable claw 3 and the shaft portion 11 of the connecting portion 5, it stretches radially outward. Also at this time, the connecting portion 5 is particularly likely to refract at the connection portion with the movable claw 3 and the connection portion with the shaft portion 11, and stress is likely to concentrate.

[0037] As a case where the movable claw 3 deforms outward in the radial direction, it is assumed that the cushion clip 1 is molded and the slide mold 22 is released from the movable claw 3. This will be described with reference to FIG. 8. FIG. 8(a) shows a state in which the inside of the mold is filled with EPDM or the like, which is the material of the cushion clip 1. Since the movable claw 3 has an undercut with respect to the direction of the central axis C1, it is necessary to release it with the slide mold 22.

[0038] As shown in FIG. 8(b), it is assumed that the slide mold 22 is released outward in the radial direction as shown in the figure. At this time, the movable claw 3 is pulled in the direction of R2 until it separates from the slide mold 22. As described as a problem of the prior art with reference to FIG. 13(c), if there is no connecting portion 5, the movable claw 3 may be further pulled outward in the radial direction, and a crack 53 may occur between the movable claw 3 and the shaft portion 11. On the other hand, since the connecting portion 5 restricts the movable range of the movable claw 3, as shown in FIG. 8(c), the slide mold 22 is released from the movable claw 3. When the slide mold 22 is released, the movable claw 3 returns in the direction of R3.

[0039] As another case where the movable claw 3 deforms outward in the radial direction, for example, the time of product transportation can be considered. When a plurality of cushion clips 1 are packed in one packing box and vibrate during transportation, it is assumed that the movable claws 3 are entangled with each other and attract each other. Also in this case, since the connecting portion 5 restricts the movable range of the movable claw 3, the occurrence of cracks between the movable claw 3 and the shaft portion 11 is reduced.

[0040] <Configuration of the connecting portion 5 and effects by the behavior of the connecting portion 5> According to the configuration of the connecting portion 5 and the behavior of the connecting portion 5 described above, the following effects are obtained. When the connecting portion 5 is formed on the entire peripheral edge portion of the movable claw 3, the movable region when the movable claw 3 elastically deforms is more restricted. Therefore, the cushion clip 1 can reduce problems such as the occurrence of cracks or breakage between the movable claw 3 and the shaft portion 11.

[0041] According to the first connecting portion 5a shown in FIG. 4(a), the movable claw 3 is connected between the shaft portion 11 and the cushion portion 4, and the entire recess 6 is covered. In this case, the first connecting portion 5a can restrict the movable range of the movable claw 3 the most compared to other examples described later. Therefore, the occurrence of cracks or breakage between the movable claw 3 and the shaft portion 11 can be minimized. Also, since the first connecting portion 5a is formed to spread over the entire recess 6, the thickness t1 can be made thin. Therefore, an increase in resistance when inserting the mounting portion 2 into the mounting hole 21 can be reduced.

[0042] As shown in FIGS. 4(b) to 4(e), from the second connecting portion 5b to the fifth connecting portion 5e, the area covering the recess 6 is smaller than that of the first connecting portion 5a. Therefore, if the thickness is the same, the movable range of the movable claw 3 becomes wider. On the other hand, from the second connecting portion 5b to the fifth connecting portion 5e, by adjusting the thickness, it is possible to make the resistance when inserting into the mounting hole 21 equivalent to that of the first connecting portion 5a. Therefore, the movable region when the movable claw 3 elastically deforms can be restricted, and the occurrence of cracks or breakage between the movable claw 3 and the shaft portion 11 can be reduced.

[0043] Also, as shown in FIG. 5, when the connecting portion 5 is formed from the movable claw 3 to the cushion portion 4 along the direction of the central axis C1 of the mounting portion 2, the movable region when the movable claw 3 elastically deforms is restricted. Therefore, the cushion clip 1 can reduce problems such as the occurrence of cracks or breakage between the movable claw 3 and the shaft portion 11.

[0044] Also, as shown in FIG. 9, when the connecting portion 5 is formed from the end portion in the circumferential direction of the movable claw 3 to reach the shaft portion 11, the movable region of the movable claw 3 during elastic deformation is restricted. Therefore, the cushion clip 1 can reduce problems such as the occurrence of cracks or breakage between the movable claw 3 and the shaft portion 11.

[0045] Also, as shown in FIGS. 5 and 9, the connecting portion 5 is formed such that the inner surface 15 in the radial direction is continuous with the inner surface 13 in the radial direction of the movable claw 3. If the inner surface 15 of the connecting portion 5 and the inner surface 13 of the movable claw 3 are discontinuously connected to form a protruding portion inward in the radial direction, the range for allowing the deformation of the movable claw 3 in the space portion 10 will be narrowed. In contrast, the cushion clip 1 can reduce problems such as the occurrence of cracks or breakage between the shaft portion 11 without a decrease in the amount of deformation inward in the radial direction when the movable claw 3 elastically deforms. Furthermore, since the inner surface 15 of the connecting portion 5 and the inner surface 13 of the movable claw 3 are connected without a step, stress concentration is less likely to occur. Therefore, the occurrence of cracks or breakage between the connecting portion 5 and the movable claw 3 can be reduced.

[0046] Also, as shown in FIG. 6, the connecting portion 5 is formed such that the inner surface 15 in the radial direction is continuous with the inner surface 11b in the radial direction of the shaft portion 11. Also in this case, if the inner surface 15 of the connecting portion 5 and the inner surface 11b of the shaft portion 11 are discontinuously connected to form a protruding portion inward in the radial direction, the range for allowing the deformation of the movable claw 3 in the space portion 10 will be narrowed. In contrast, the cushion clip 1 can reduce problems such as the occurrence of cracks or breakage between the shaft portion 11 without a decrease in the amount of deformation inward in the radial direction when the movable claw 3 elastically deforms. Furthermore, since the inner surface 15 of the connecting portion 5 and the inner surface 11b of the shaft portion 11 are connected without a step, stress concentration is less likely to occur. Therefore, the occurrence of cracks or breakage between the connecting portion 5 and the shaft portion 11 can be reduced.

[0047] Also, as shown in FIGS. 4(a), 5, and 6, the recess 6 forming the connecting portion 5 is formed from the second side by a distance L1 from the starting point 3a on the first side of the movable claw 3. Therefore, since the movable claw 3 has a connecting portion with the shaft portion 11 by a distance L1, problems such as the occurrence of cracks or breakage between the movable claw 3 and the shaft portion 11 can be reduced.

Explanation of Reference Numerals

[0048] 1 Cushion clip 2 Mounting portion 3 Movable Claw 4 Cushion Part 5 Connecting Part 10 Space Part 11 Shaft Part 11a Outer Peripheral Surface 13 Surface 15 Surface 20 Object to be Mounted 21 Mounting Hole C1 Central Axis L1 Distance t1 Thickness t2 Distance

Claims

【Claim 1】 A cushion clip that can be attached to an object to be attached having a mounting hole, wherein the side to be inserted into the object to be attached is the first side and the opposite side is the second side, a shaft-shaped mounting portion that can be inserted into the mounting hole, and a cushion portion having an outer diameter larger than the shaft diameter of the mounting portion and integrally formed continuously with the end portion of the mounting portion on the second side, wherein the mounting portion includes a shaft portion extending around a central axis, a movable claw that can be elastically deformed, and a space portion that allows deformation of the movable claw inside the mounting portion in the radial direction, wherein the movable claw includes a connecting portion connecting at least a part of the peripheral edge portion to the shaft portion and / or the cushion portion, the thinnest part of the connecting portion is formed thinner than the distance between the outer peripheral surface of the shaft portion and the space portion, when the first side of the mounting portion is inserted into the mounting hole, the movable claw is elastically deformed and returns after insertion, so that the peripheral edge of the mounting hole is sandwiched between the end portion of the movable claw on the second side and the end portion of the cushion portion on the first side, and the cushion clip can be attached to the object to be attached.

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