JP6396277B2 - clip - Google Patents

Description

  The present disclosure relates to a clip for attaching two or more members together.

  As a clip capable of efficiently attaching and detaching two members to each other, for example, a clip described in Patent Document 1 is known. The clip described in Patent Document 1 includes a grommet that can be elastically deformed at a tip end portion, and a pin that has projections and depressions that are inserted into the grommet and guide the elastic deformation of the grommet. The grommet is inserted into the through hole of the member to be attached, and the pin is further inserted into the grommet to advance to the engagement position where the convex portion of the pin pushes the tip side portion of the grommet outward. At this time, since the outer diameter of the tip side portion of the grommet is larger than the inner diameter of the through hole of the attachment member, the grommet is engaged with the member. When removing the clip, the pin is further moved forward with respect to the grommet, and is disposed at a release position where the tip side portion of the grommet is received in the concave portion of the pin. At this time, since the outer diameter of the front end portion of the grommet returns to a state smaller than the inner diameter of the through hole of the attachment member, the engagement of the grommet with the member is released and the clip can be removed from the member.

JP 2012-137130 A

  However, in the clip described in Patent Document 1, if an operator puts too much force when attaching the clip, the pin moves forward beyond the engagement position to the release position, and the work needs to be redone. Could not be improved sufficiently.

  In view of such a problem, in the present invention, the clip is attached by moving the pin forward by one step with respect to the grommet, and further removed by moving the pin forward by one step. An object of the present invention is to provide a clip that can be prevented.

  An embodiment of the present invention is a clip (1, 51) for attaching a second member (6) to a first member (5), and a trunk portion (7) inserted into a through hole (7) of the first member. 8, 54) and a base portion (9) provided on one side in the axial direction of the barrel portion and having a diameter enlarged with respect to the through hole, and penetrates the barrel portion and the base portion in the axial direction. A grommet (2, 52) in which a grommet hole (10, 55) is formed, a shaft portion (15, 60) inserted into the grommet hole, and one side of the shaft portion in the axial direction, And a pin (3, 53) having a head attached to the second member, wherein the body portion of the grommet extends in the axial direction, and is engaged and disengaged by elastic deformation at the periphery of the through hole. Said grommet having at least two elastic pieces (12, 57) The shaft portion inserted into the body and the elastic piece of the body portion cooperate with each other so that the shaft portion is engaged from the engagement position where the body portion should be held in the through hole. It is a position advanced from the position relative to the body, and the body is configured to be displaced to a release position to be released from the through hole, and the clip is disposed between the base and the head. It further comprises a spacer (4) disposed so as to be removable and prohibiting the shaft portion from advancing from the engagement position to the release position by contacting the base portion and the head portion.

  According to this configuration, even if an operator puts too much force when attaching the clip, the head portion of the pin abuts against the spacer to prevent the shaft portion from advancing, so that the shaft portion is engaged. It is possible to prevent movement beyond the position to the release position. Furthermore, by removing the spacer, the shaft can be advanced to the release position to remove the clip, and the attachment of the first member to the second member can be released.

  In another embodiment of the present invention, in the above configuration, the maximum value from the central axis of the body portion (8) to the outer surface of the elastic piece (12) is a radius of the through-hole in a state where no external force is applied. The elastic piece has a claw (13) projecting inward, and the shaft portion (14) engages with the claw at the engagement position, and from the central axis of the trunk portion. An engagement recess (22) whose outer diameter is set so that the maximum value to the outer surface of the elastic piece is larger than the radius of the through hole, and provided on the head side of the engagement recess, The outer diameter is set so as to allow the maximum value from the central axis of the body portion to the outer surface of the elastic piece to be less than or equal to the radius of the through hole by receiving the claw at the release position. It has a release recessed part (23), It is characterized by the above-mentioned.

  According to this configuration, in the clip (1) for coupling the first member and the second member to each other in a state where the front end side of the body of the grommet (2) is elastically deformed outward, the pin (3) It is possible to prevent the shaft portion from moving forward beyond the engagement position to the release position.

  According to another embodiment of the present invention, in the above-described configuration, the shaft portion is provided on a distal end side with respect to the engagement recess, receives the claw at a pre-installation position that is retracted from the engagement position, and It further includes a pre-mounting recess (21) whose outer diameter is set so as to allow the maximum value from the central axis to the outer surface of the elastic piece to be equal to or less than the radius of the through hole.

  According to this structure, since the grommet, the pin, and the spacer, which are constituent members of the clip, can be assembled in advance with each other, the work at the installation site of the first member and the second member can be efficiently performed. .

  In another embodiment of the present invention, in the above-described configuration, the maximum value from the central axis of the body portion (54) to the outer surface of the elastic piece is the through-hole in a state where no external force is applied. The shaft portion (60) has an outer diameter that restricts the maximum value from the trunk central axis to the outer surface of the elastic piece from being less than or equal to the radius of the through hole at the engagement position. And an engagement recess (62) set at a position closer to the head than the engagement recess, and a maximum from the central axis to the outer surface of the elastic piece due to elastic deformation of the body at the release position. And a release recess (63) having an outer diameter so as to allow the value to be equal to or less than the radius of the through hole.

  According to this configuration, the maximum value from the central axis of the body of the grommet (52) to the outer surface of the elastic piece is larger than the radius of the through hole when no force is applied, and the pin (53) In the clip (51) that couples the first member and the second member to each other in a state where the elastic deformation of the pin is restricted, the shaft portion of the pin is prevented from moving forward beyond the engagement position to the release position at the time of mounting. it can.

  In another embodiment of the present invention, in any one of the configurations described above, the spacer includes a spacer through hole (25) through which the shaft portion is inserted, and an inner peripheral surface of the spacer through hole and an outer periphery of the spacer. A weak part (28) having a lower strength than the other part is provided in a part between the surfaces. Moreover, it may replace with a weak part and may have a spacer slit (29) from the inner peripheral surface of the said spacer through-hole to the outer peripheral surface of the said spacer.

  According to this configuration, since the spacer can be removed from the pin by destroying the fragile portion or by passing the shaft portion through the spacer slit, the clip can be easily removed.

  According to another embodiment of the present invention, in the above configuration, the elastic piece (12) is formed by providing a slit from the distal end to the proximal end of the barrel portion along the axial direction in the barrel portion. The base portion has a guide groove (24) along the axial direction communicating with the slit on an inner peripheral surface of the grommet hole, and the shaft portion slides on the slit and the guide groove in the axial direction. And the spacer has a spacer groove (26) through which the protrusion can pass on an inner peripheral surface of the spacer through hole.

  According to this configuration, when the protrusion slides in the slit and the spacer groove, the axial movement of the pin with respect to the grommet is guided, and the displacement in the circumferential direction is restricted.

  Another embodiment of the present invention is characterized in that, in the above configuration, the spacer has a spacer convex portion (27) capable of being pressed against the shaft portion on an inner peripheral surface of the spacer through hole.

  According to this configuration, the spacer is prevented from moving in the axial direction and the circumferential direction with respect to the pin unless a force of a predetermined value or more is applied. In particular, when the spacer has a fragile portion or a spacer slit, the orientation can be set at the time of attachment so that the removal operation can be easily performed, so that the removal operation can be performed efficiently.

  In another embodiment of the present invention, in any one of the above configurations, the spacer includes a tool engagement portion (30) provided to engage with a tool used to remove the spacer. And

  According to this configuration, it is possible to easily remove the spacer even in a narrow space.

  In another embodiment of the present invention, the head portion of the pin has a second member engaging portion that engages with the second member.

  According to this configuration, the second member and the pin can be reliably fixed to each other.

  In another embodiment of the present invention, in any one of the above configurations, the second member engaging portion includes a pair of holding plates (17) facing each other across the second member, The head has an abutment plate (18) that is disposed closer to the shaft portion than the pair of holding plates and abuts against the spacer.

  According to this configuration, the second member and the pin are firmly fixed to each other, and the spacer is disposed away from the second member, so that the spacer can be easily removed.

  According to the present invention, it is possible to prevent the pin from being advanced by two stages at the time of attachment in a clip that is attached by advancing the pin by one stage relative to the grommet and is removed by further advancing one stage. Clips can be provided.

The perspective view of the clip concerning a 1st embodiment. The perspective view of the grommet concerning a 1st embodiment The perspective view of the pin concerning a 1st embodiment The perspective view of the spacer which concerns on 1st Embodiment. The perspective view which shows deformation | transformation embodiment of a spacer Sectional drawing which shows the (a) pre-attachment position of the clip concerning 1st Embodiment, (b) engagement position, and (c) release position. Sectional drawing which shows (a) pre-attachment position, (b) engagement position, and (c) release position of the clip concerning 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a first embodiment will be described with reference to FIGS.

  As shown in FIG. 1, the clip 1 according to the first embodiment includes a grommet 2, a pin 3 inserted into the grommet 2, and a spacer 4 disposed between the grommet 2 and the pin 3. The grommets 2, the pins 3 and the spacers 4 are injection molded products made of a resin such as polyoxymethylene (polyacetal) or polyethylene. The clip 1 is used to connect the first member 5 and the second member 6 (see FIG. 6) to each other.

  As shown in FIGS. 2 and 6, the grommet 2 includes a body portion 8 that is inserted into the through hole 7 of the first member 5, and a base portion 9 that is provided on one side in the axial direction of the body portion 8. The grommet 2 is formed with a grommet hole 10 that penetrates the body portion 8 and the base portion 9 in the axial direction.

  The body portion 8 has a cylindrical shape, and four slits 11 are formed along the axial direction from the opposite side of the base portion 9, that is, from the distal end side to the base end that is a boundary with the base portion 9. The four slits 11 are provided at equal intervals in the circumferential direction. The substantial part of the body part 8 is divided into four parts by four slits 11 to form four elastic pieces 12. The four elastic pieces 12 can be bent by elastic deformation so that the distal end side is displaced in the inner and outer directions close to and away from the central axis with the base end side as a fulcrum.

  The outer surface of the body portion 8 forms a smooth surface parallel to the axial direction, and the inner surface of the body portion 8 forms a smooth surface parallel to the axial direction except for the front end side. In FIG. 2, a claw 13 projecting inward is provided on each elastic piece 12. The claw 13 protrudes inward so that the proximal surface is curved or inclined and the distal surface is orthogonal to the axial direction.

  The base portion 9 has a generally annular shape, and has an outer diameter larger than the inner diameter of the through hole 7 so as not to pass through the through hole 7. The outer edge side of the base portion 9 bends toward the distal end side of the body portion 8 and comes into contact with the vicinity of the through hole 7 of the first member 5.

  As shown in FIGS. 3 and 6, the pin 3 includes a head portion 14 attached to the second member 6, and a shaft portion 15 that extends from the head portion 14 in the axial direction and is inserted into the grommet hole 10.

  The head 14 is formed in an annular shape by extending from the head shaft 16 in a radial direction so as to engage with the second member 6 and hold the second member 6 by being arranged on the extension line of the shaft portion 15. A second member engaging portion composed of a pair of holding plates 17, and an annular shape that is arranged on the shaft portion 15 side of the holding plate 17 and extends radially from the head shaft 16 to contact the spacer 4. And an abutment plate 18 exhibiting the following. The radius of the contact plate 18 is smaller than the radius of the pair of holding plates 17.

  The shaft portion 15 extends along the axial direction, and has a main portion 19 having a shape in which the surface of the cylinder is uneven so that the cross section is circular, and is provided on the surface of the main portion 19 along the axial direction. And the projected ridge 20. The outer diameter of the thickest portion of the main portion 19 is substantially the same as or slightly smaller than the inner diameter of the grommet hole 10 in the portion other than the claw 13.

  A pre-attaching concave portion 21, an engaging concave portion 22 and a releasing concave portion 23 are provided in the front end portion of the main portion 19 in order from the front end side, and these three concave portions 21, 22, and 23 are used to attach the pin 3 to the grommet. 2 can be radially aligned with the claw 13 of the grommet 2 depending on the degree of pressing.

  The pre-attaching recess 21 and the release recess 23 can be received so as not to push the claw 13 outward, and do not elastically deform the elastic piece 12. The pre-attaching recess 21 and the release recess 23 have a shape that is substantially complementary to the claw 13. Therefore, the front end side wall surfaces of the pre-mounting recess 21 and the release recess 23 have a plane substantially orthogonal to the axial direction, and the wall surface on the head 14 side is smoothly curved or inclined. For this reason, the pin 3 can be advanced by sliding the curved or inclined surfaces with respect to the grommet 2, but cannot be retracted by locking the planes orthogonal to each other in the axial direction.

  The engaging recess 22 has a bottom surface (a surface facing the radial direction) higher than the bottom surfaces of the pre-attachment recess 21 and the release recess 23 (swells in the radial direction), and pushes the claw 13 outward on the bottom surface. The claw 13 can be engaged with the inner peripheral surface, and the elastic piece 12 can be maintained in an elastically deformed state so that the claw 13 is displaced outward. Furthermore, the engaging recess 22 is a flat surface whose wall surface on the front end side is orthogonal to the axial direction, and the pin 3 is engaged with the flat surface orthogonal to the axial direction on the front end side of the claw 13 on the wall surface on the front end side. Is not retractable relative to grommet 2. Further, the engaging recess 22 has a wall surface on the head 14 side which is also a plane orthogonal to the axial direction, but the outer edge of the wall surface on the head 14 side is curved or inclined on the proximal side of the claw 13. By sliding, the pin 3 can advance relative to the grommet 2.

  Note that the front end side of the main part 19 with respect to the pre-mounting recess 21 is inclined so as to decrease in diameter toward the front end. Further, the head 14 side of the main portion 19 relative to the release recess 23 has a substantially constant outer diameter, and the outer diameter is substantially equal to the inner diameter of the grommet hole 10 other than the claw 13, or Slightly small. Further, the main portion 19 may have a hollow shape with the central axis of the main portion 19 and the head portion 14 having a predetermined depth.

  Four ridges 20 are provided at four positions aligned with the four slits 11, and two first ridges 20 a located on opposite sides of the four first ridges 20 a. And two second protrusions 20b provided on the head 14 side in the axial direction. The first protrusion 20a is provided at the front end side portion of the main portion 19, that is, at a position corresponding to the pre-attaching concave portion 21, the engaging concave portion 22, and the releasing concave portion 23, and each concave portion 21, 22, 23 is divided into four. doing. The first protrusions 20a and the second protrusions 20b have four guide grooves extending in the axial direction provided on the inner peripheral surface of the base 9 so as to be aligned with the slits 11 and the four slits 11 in the axial direction. 24 and slidably guides the axial movement of the shaft portion 15 relative to the body portion 8 so as not to rotate in the circumferential direction.

  As shown in FIGS. 4 and 6, the spacer 4 is a flat member having a predetermined thickness. The spacer 4 is disposed between the base 9 of the grommet 2 and the head 14 of the pin 3, and when the claw 13 of the grommet 2 is engaged with the engagement recess 22 of the pin 3, The thickness is set so as to be able to come into contact with both the contact plate 18 of the pin 3.

  In the spacer 4, a spacer through hole 25 through which the shaft portion 15 of the pin 3 is inserted is provided in the thickness direction of the spacer 4. The inner diameter of the spacer through-hole 25 is substantially equal to or slightly larger than the outer diameter on the base 9 side, which is the thickest part of the shaft portion 15. Four spacer grooves 26 are formed on the inner peripheral surface of the spacer through hole 25 so as to be able to receive the protrusions 20 of the pin 3 and are equally spaced apart from each other in the circumferential direction. In addition, a spacer convex portion 27 is formed on the inner peripheral surface of the spacer through-hole 25 so as to be in pressure contact with a portion of the shaft portion 15 of the pin 3 that is close to the head portion 14.

  A weakened portion having a reduced thickness between the outer circumferential surface of the spacer 4 and the inner circumferential surface of the spacer through hole 25 (the bottom surface of the spacer groove 26) on the radial extension line of one of the four spacer grooves 26 28 is provided. As shown in the drawing, the weakened portion 28 may be cut on the outer peripheral surface of the spacer 4 to reduce the thickness between the outer peripheral surface of the spacer 4 and the inner peripheral surface of the spacer through-hole 25. The thickness may be reduced or both. As shown in FIG. 5, a spacer slit 29 extending from the outer peripheral surface of the spacer 4 to the inner peripheral surface of the spacer through hole 25 may be provided in place of the fragile portion 28.

  The spacer 4 is provided with a tool engaging portion 30 that engages with a tool for removing the spacer 4 such as a flathead screwdriver, on the opposite side of the fragile portion 28 with respect to the spacer through hole 25. The tool engaging portion 30 may be a concave portion or a convex portion in addition to the illustrated through hole. The distance from the spacer through hole 25 to the tool engaging portion 30 is preferably longer than the radius of the contact plate 18.

  With reference to FIG. 6, the attachment and removal procedures and functions of the clip 1 will be described. The first member 5 and the second member 6 that are coupled to each other by the clip 1 are plate-like at the portion to which the clip 1 is attached, and the through hole 7 that penetrates in the thickness direction is formed in the first member 5 at that portion. The second member 6 is formed with a U-shaped hole 31 penetrating in the thickness direction and having one side edge opened.

  Assembling of the grommet 2, the pin 3, and the spacer 4 which are constituent members of the clip 1 may be performed at the installation site of the first member 5 and the second member 6, but before shipping the clip 1 as a product, etc. It is preferable to be performed in advance. The operator inserts the shaft portion 15 of the pin 3 into the spacer through hole 25 of the spacer 4 and moves the spacer 4 to the vicinity of the contact plate 18. The shaft portion 15 can be inserted into the spacer through hole 25 by aligning the protrusion 20 provided in the shaft portion 15 with the spacer groove 26 (see FIG. 4) provided in the spacer through hole 25 in the axial direction. . In addition, the spacer 4 and the shaft portion 15 do not slide on the entire inner peripheral surface and outer peripheral surface of each other, but the spacer convex portion 27 slides on the outer peripheral surface of the shaft portion 15. Therefore, the height of the spacer convex portion 27 absorbs the distortion due to the manufacturing error, and the shaft portion 15 can be inserted into the spacer 4 with a relatively small force. In addition, the spacer 4 arranged in the vicinity of the abutting plate 18 has the spacer convex portion 27 pressed against the shaft portion 15, and therefore the axial direction and the circumferential direction with respect to the shaft portion 15 unless a force exceeding a predetermined value is applied. Displacement is regulated.

  Further, the shaft portion 15 is inserted into the grommet hole 10 of the grommet 2, and the claw 13 is advanced to the pre-installation position received in the pre-installation recess 21. After the claw 13 is elastically deformed so as to be pushed outward by the tip of the shaft portion 15, it is received in the recess 21 before mounting and returns to its original shape, so that a sense of moderation is obtained when it is in the position before mounting. . The shaft portion 15 can be inserted into the grommet hole 10 by aligning the protrusion 20 provided on the shaft portion 15 with the slit 11 and the guide groove 24 (see FIG. 2) provided on the grommet 2 in the axial direction. . Since the protrusion 20 is received in the slit 11 and the guide groove 24 at the pre-attachment position, the shaft portion 15 and the spacer 4 stably disposed with respect to the shaft portion 15 are circumferential with respect to the grommet 2. Rotation is restricted.

  Further, since the front end surface of the claw 13 which is a plane orthogonal to the axial direction and the wall surface on the front end side of the pre-mounting recess 21 come into contact with each other, the shaft portion 15 moves backward with respect to the grommet 2 at the position before mounting (see FIG. 6), that is, the pin 3 is prevented from being pulled out of the grommet 2. On the other hand, the surface on the base 9 side of the claw 13 that is curved or inclined so as to increase in diameter toward the base 9 side or the head 14 side is in contact with the surface on the head 14 side of the recess 21 before mounting. Therefore, since the second protrusion 20b slightly longer in the radial direction than the guide groove 24 is locked to the surface of the base portion 9, the shaft portion 15 is provided with the grommet 2 unless a force exceeding a predetermined value is applied. The forward movement (downward movement in FIG. 6), that is, the pin 3 being pushed into the grommet 2 is restricted. In this state, since the claw 13 is received in the concave portion 21 before attachment, no external force is applied to the trunk portion 8 of the grommet 2, and the trunk portion 8 is not elastically deformed. It is below the inner diameter of the through hole 7 of the first member 5 over the entire region in the direction.

  Next, the clip 1 is attached to the second member 6. The clip 1 is slid in a direction orthogonal to the axial direction so that the second member 6 is sandwiched between the pair of holding plates 17 of the head 14 of the pin 3, and the pin 3 is inserted into the U-shaped hole 31 of the second member 6. The head 14 is inserted. Next, the front end side portion of the body portion 8 of the grommet 2 is inserted into the through hole 7 of the first member 5 to obtain the state shown in FIG. At this time, it is preferable that the tool engaging portion 30 of the spacer 4 is oriented in a direction in which the tool can be easily inserted, and the spacer 4 does not rotate in the circumferential direction with respect to the grommet 2 as described above. The orientation is stable after installation.

  Next, the worker pushes the head 14 so as to advance the pin 3 relative to the grommet 2. Then, after the claw 13 is pushed outward while sliding on the wall surface on the head 14 side of the concave portion 21 before mounting, the claw 13 is received by the engaging concave portion 22, and the second protrusion 20 b comes into pressure contact with the guide groove 24. 6B, the shaft portion 15 is engaged with the grommet 2 in the engagement recess 22 while giving a sense of moderation to the operator. It is arranged at the engaged position. Since the spacer 4 is disposed between the base portion 9 and the contact plate 18, even if the operator pushes the head portion 14 of the pin 3 with an excessive force, the shaft portion 15 is further further than the engagement position. Advancing is prevented. Further, since the front end surface of the claw 13 which is a plane orthogonal to the axial direction and the wall surface on the front end side of the engagement recess 22 abut each other, the shaft portion 15 is retracted with respect to the grommet 2 at the engagement position. Is prevented.

  In a state where the shaft portion 15 is disposed at the engagement position with respect to the grommet 2, the inner peripheral surface of the claw 13 is locked to the bottom surface of the engagement recess 22, so that the elastic piece 12 is elastic so that the distal end side spreads. The deformed state is maintained. At this time, since the outer diameter on the distal end side of the body portion 8, that is, the outer diameter constituted by the four claws 13 is larger than the inner diameter of the through hole 7, the grommet 2 is prevented from coming out of the first member 5. . Accordingly, the first member 5 and the second member 6 are attached to each other via the clip 1.

  When releasing the attachment of the first member 5 and the second member 6 to each other, the spacer 4 is first removed. When the tool is engaged with the tool engaging portion 30 and a force is applied in the radial direction opposite to the fragile portion 28, the stress applied from the pin 3 to the spacer 4 is concentrated on the fragile portion 28 and the fragile portion 28 breaks. Therefore, the spacer 4 can be removed from the pin 3. At this time, the spacer 4 is easily refracted by the spacer groove 26 arranged at a position shifted by 90 ° in the circumferential direction from the fragile portion 28, and the spacer 4 can be easily removed. As shown in FIG. 5, in the spacer 4 having the spacer slit 29 instead of the fragile portion 28, the spacer 4 can be removed by elastically deforming or breaking so that the spacer slit 29 widens. Since the spacer 4 is separated from the second member 6 held by the holding plate 17 by the contact plate 18, it is easy to insert the tool. Moreover, since the spacer 4 is arranged in a direction in which the tool can be easily inserted into the tool engaging portion 30, it is easy to insert the tool.

  By removing the spacer 4, the shaft portion 15 can be further advanced relative to the grommet 2. When the operator pushes the head portion 14 of the pin 3 and advances the shaft portion 15, the claw 13 slides on the outer peripheral surface of the wall surface on the head portion 14 side of the engagement recess portion 22 on the inner peripheral surface. Leave. Thereafter, as shown in FIG. 6C, the shaft portion 15 is disposed at a release position where the claw 13 is received in the release recess 23 with respect to the grommet 2. When the nail | claw 13 is received by the cancellation | release recessed part 23, since the trunk | drum 8 which was elastically deformed will return to the original shape, a moderation feeling will be obtained. Further, in this state, the outer diameter of the body portion 8 is equal to or smaller than the inner diameter of the through hole 7 of the first member 5 over the entire area in the axial direction, so that the grommet 2 is extracted from the through hole 7 of the first member 5. be able to. By removing the grommet 2 from the first member 5 and removing the pin 3 from the second member 6, the attachment of the first member 5 and the second member 6 is released.

  Next, the clip 51 according to the second embodiment will be described with reference to FIG. In the description, the description of the configuration common to the first embodiment is omitted, and the same reference numerals are given.

  The clip 51 according to the second embodiment includes a grommet 52, a pin 53 inserted into the grommet 52, and a spacer 4 arranged between the grommet 52 and the pin 53.

  The grommet 52 includes a body portion 54 that is inserted into the through hole 7 of the first member 5, and a base portion 9 that is provided on one side of the body portion 54 in the axial direction. The grommet 52 is formed with a grommet hole 55 that penetrates the body portion 54 and the base portion 9 in the axial direction.

  The body portion 54 has a substantially cylindrical shape, and an elastic piece 57 extends in the axial direction from the front end side of the body portion 54 in openings 56 provided at two positions on the left and right sides of the cylindrical peripheral wall. The distance between the engaging portions 58, which are the most bulged portions of the outer surfaces of the two elastic pieces 57, is larger than the diameter of the through-hole 7 when no external force is applied. The outer surface of the elastic piece 57 is inclined so as to be deformed inward in the radial direction by sliding on the inner edge of the through-hole 7 when the grommet 52 is inserted into the through-hole 7 or removed from the through-hole 7. Or it is curved. On the inner surface of the elastic piece 57, an engaged convex portion 59 that bulges inward and engages with the pin 53 disposed at the engaging position is provided on the base 9 side, that is, on the free end side of the elastic piece 57. ing. In the engaged convex portion 59, the surface facing the distal end side (the base end side of the elastic piece 57, the lower side in FIG. 7) of the body portion 54 is a plane orthogonal to the axial direction, and the base 9 side (the elastic piece 57). The surface facing the free end side (upper side in FIG. 7) is inclined or curved with respect to the axial direction.

  The pin 53 includes a head portion 14 attached to the second member 6 and a shaft portion 60 that extends from the head portion 14 in the axial direction and is inserted into the grommet hole 55. The shaft portion 60 extends along the axial direction, and has a shape in which unevenness is provided on the surface of the cylinder so that the cross section is circular. A pre-attaching concave portion 61, an engaging concave portion 62, and a releasing concave portion 63 are provided in the distal end portion of the shaft portion 60 in order from the distal end side. As shown in FIG. 7A, the engagement portion 58 is located radially inward of the inner peripheral surface of the through hole 7 at the pre-attachment position where the pre-attachment recess 61 is aligned with the engaged convex portion 59 in the radial direction. The pre-attaching concave portion 61 receives the engaged convex portion 59 so that the elastic piece 57 can be elastically deformed until the elastic convex portion 57 is elastically deformed. Therefore, the grommet 52 can be inserted into the through hole 7. The bottom surface of the engaging recess 62 is positioned on the outer side in the radial direction than the bottom surfaces of the pre-attaching recess 61 and the release recess 63. At the engagement position where the engaging recess 62 is engaged with the engaged convex portion 59, the bottom surface of the engaging concave portion 62 comes into contact with the inner peripheral surface of the engaged convex portion 59 as shown in FIG. Therefore, the engagement portion 58 of the grommet 52 is engaged with the peripheral edge of the through hole 7 to prevent the grommet 52 from being detached from the first member 5. In addition, since the tip side wall surface of the engaging recess 62 which is a plane orthogonal to the axial direction and the wall surface facing the tip side of the engaged projection 59 are in contact with each other, the pin 53 moves backward with respect to the grommet 52. It becomes impossible. At the release position where the release recess 63 is aligned with the engaged convex portion 59 in the radial direction, the engagement portion 58 is disposed radially inward of the inner peripheral surface of the through hole 7 as shown in FIG. The release recess 63 receives the engaged protrusion 59 so that the elastic piece 57 can be elastically deformed until it is pressed. Therefore, the grommet 52 can be extracted from the through hole 7.

  Since the spacer 4 is disposed between the base portion 9 and the head portion 14, it is possible to prevent the pin 53 from moving forward with respect to the grommet 52 from the engagement position toward the release position, and to advance when the spacer 4 is removed. This is the same as in the first embodiment.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. The movement in the axial direction may be restricted by providing an engagement structure in a portion other than the tip. For example, the pin may be attached to the second member by other means such as an adhesive. Moreover, another member may be overlapped on one or both of the first member and the second member, and three or more members may be attached to each other. Further, the second member may be sandwiched between the first member and the base of the grommet instead of the pin head. The number of elastic pieces and protrusions may be 2, 3 or 5 or more.

1, 51: clip, 2, 52: grommet, 3, 53: pin, 4: spacer, 5: first member, 6: second member, 7: through hole, 8, 54: trunk, 9: base, 10, 55: Grommet hole, 11: Slit, 12, 57: Elastic piece, 13: Claw, 14: Head, 15: Shaft, 17: Holding plate (second member engaging portion), 18: Contact plate , 20: protrusion, 21, 61: recess before mounting, 22, 62: engagement recess, 23, 63: release recess, 24: guide groove, 25: spacer through hole, 26: spacer groove, 27: spacer protrusion , 28: weak part, 29: spacer slit, 30: tool engaging part, 58: engaging part

Claims (11)

A clip for attaching the second member to the first member,
A body portion inserted into the through hole of the first member; and a base portion provided on one side in the axial direction of the body portion and having an enlarged diameter with respect to the through hole, the body portion and the base portion A grommet in which a grommet hole penetrating in the axial direction is formed,
A shaft portion inserted into the grommet hole, and a pin having a head portion provided on one side of the shaft portion in the axial direction and attached to the second member,
The trunk portion of the grommet has at least two elastic pieces that extend in the axial direction and are engaged and disengaged by elastic deformation at the periphery of the through-hole.
The shaft portion inserted into the grommet hole and the elastic piece of the body portion cooperate with each other so that the shaft portion is moved from an engagement position where the body portion should be held in the through hole. It is a position advanced from the engagement position with respect to the body portion, and the body portion is configured to be displaced to a release position to be released from the through hole,
A spacer in which the clip is detachably disposed between the base and the head, and prohibits advancement of the shaft portion from the engagement position to the release position by contacting the base and the head. A clip further comprising: The maximum value from the central axis of the body portion to the outer surface of the elastic piece is equal to or less than the radius of the through hole in a state where no external force is applied,
The elastic piece has a claw protruding inward,
The shaft portion is engaged with the claw at the engagement position, and an outer diameter is set so that a maximum value from the central shaft to the outer surface of the elastic piece is larger than a radius of the through hole. An engagement recess, which is provided closer to the head than the engagement recess, receives the claw at the release position, and the maximum value from the central axis to the outer surface of the elastic piece is the radius of the through hole The clip according to claim 1, further comprising a release recess having an outer diameter set so as to allow the following.   The shaft portion is provided on the tip side with respect to the engagement recess, receives the claw at a pre-installation position that is retracted from the engagement position, and is a maximum value from the central shaft to the outer surface of the elastic piece. The clip according to claim 2, further comprising a pre-mounting recess whose outer diameter is set so as to allow the diameter to be less than or equal to the radius of the through hole. The maximum value from the central axis of the body portion to the outer surface of the elastic piece is larger than the radius of the through hole in the state where no external force is applied,
The shaft portion has an engagement recess whose outer diameter is set so as to restrict the maximum value from the central axis to the outer surface of the elastic piece at the engagement position being equal to or less than the radius of the through hole; The maximum value from the central axis to the outer surface of the elastic piece is less than or equal to the radius of the through-hole due to elastic deformation of the elastic piece at the release position. The clip according to claim 1, further comprising a release recess having an outer diameter set to allow.   The spacer has a spacer through-hole through which the shaft portion is inserted, and a weakened portion having a lower strength than other portions is provided in a part between the inner peripheral surface of the spacer through-hole and the outer peripheral surface of the spacer. The clip according to any one of claims 1 to 4, wherein the clip is provided.   The said spacer has a spacer through-hole which penetrates the said axial part, and a spacer slit from the inner peripheral surface of the said spacer through-hole to the outer peripheral surface of the said spacer, The any one of Claims 1-4 characterized by the above-mentioned. The clip according to item. The elastic piece is formed by providing a slit in the body part from the distal end of the body part to the base end along the axial direction.
The base portion has a guide groove along the axial direction communicating with the slit on an inner peripheral surface of the grommet hole, and the shaft portion protrudes along the axial direction sliding along the slit and the guide groove. Have
The clip according to claim 5 or 6, wherein the spacer has a spacer groove on the inner peripheral surface of the spacer through hole through which the protrusion can pass.   The clip according to any one of claims 5 to 7, wherein the spacer has a spacer convex portion that can be pressed against the shaft portion on an inner peripheral surface of the spacer through hole.   The clip according to any one of claims 1 to 8, wherein the spacer has a tool engaging portion provided to engage with a tool used for removing the spacer.   The clip according to claim 1, wherein the head portion of the pin has a second member engaging portion that engages with the second member. The second member engaging portion is composed of a pair of holding plates facing each other across the second member,
11. The clip according to claim 10, wherein the head portion of the pin includes a contact plate that is disposed closer to the shaft portion than the pair of holding plates and contacts the spacer.

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