WO2013065320A1

WO2013065320A1 - Fastener

Info

Publication number: WO2013065320A1
Application number: PCT/JP2012/007045
Authority: WO
Inventors: 亘小島
Original assignee: 株式会社ニフコ
Priority date: 2011-11-04
Filing date: 2012-11-02
Publication date: 2013-05-10
Also published as: JP2013096546A

Abstract

[Problem] To facilitate the access of a tool to a pin of a fastener, the fastener having the pin and a grommet. [Solution] A fastener (1) comprises: a grommet (2) provided with a base (52) in which a through-hole (51) is formed and engagement sections (61) which are provided in a protruding manner at the peripheral edge of the through-hole; and a pin (3) inserted into the through-hole so as to be capable of relative rotation. Engagement claws (65) are provided in a protruding manner on the portions of the engagement sections which face the pin. Engagement protrusions (25) and passages (24) are formed on the outer peripheral surface of the pin so as to be adjacent to each other in the circumferential direction of the pin, the engagement protrusions (25) engaging with the engagement claws in order to prevent the relative displacement of the pin in the direction of extraction thereof, the passages (24) permitting the displacement of the pin relative to the through-hole to the other side thereof. A tool engagement section (37) is formed at the insertion end of the pin. The fastener is characterized in that the pin is rotated about the axis of the through-hole relative to the grommet by a tool engaging with the tool engagement section, the rotation of the pin being made between a rotated position at which the engagement claws correspond to the engagement protrusions and a rotated position at which the engagement claws correspond to the passages.

Description

Fastener

The present invention relates to a fastener having a grommet and a pin.

Fasteners that are inserted into through holes formed in the respective panels to fasten the two panels and are coupled to the through holes to fasten the panels are known (for example, Patent Document 1). Such a fastener has a grommet provided with a plurality of flexible engaging pieces projecting from a base portion where a through hole is formed and a peripheral edge portion of an opening end on one side of the through hole, and a through hole. And a pin inserted rotatably. Each engagement piece of the grommet is inserted into both insertion holes arranged in a stacked manner, and in this state, the pin is inserted from the opening end on the other side of the through hole, so that each engagement piece is pressed by the pin. The through hole is pushed outward in the radial direction, and the engagement piece engages with the insertion hole. Locking claws project from the portion of each engagement piece facing the pin, and the outer peripheral surface of the pin is engaged with the locking claws to restrict relative displacement of the pin with respect to the through hole. The engaging projection and the passage portion where the engaging claw can be displaced with respect to the pin are formed adjacent to each other in the circumferential direction of the pin so as to allow relative displacement to the other side with respect to the through hole of the pin. Has been. As a result, when the locking claw is located at the rotational position corresponding to the locking projection, the pin is prevented from being removed from the grommet, and the engagement piece is kept engaged with the two insertion holes. When the pin is located at the rotational position corresponding to the passage portion, the pin can be removed from the grommet, and the engagement between the engagement piece and the two insertion holes is released. A tool engaging portion to which a tool can be engaged is formed at the base end portion of the pin, and the relative rotational position of the pin with respect to the grommet can be selected by using the tool.

No. 6-45048

However, the fastener described in Patent Document 1 has a problem that the pin cannot be rotated relative to the grommet when there is no space for using the tool on the base end side of the pin. In particular, when another member is coupled to the proximal end portion of the pin, there is a problem that it becomes more difficult to access the tool to the tool engaging portion.

The present invention has been made in view of the above problems, and it is an object of the present invention to facilitate access of a tool to a pin.

In order to solve the above problems, the present invention provides a plurality of flexible bases (52) provided with a through hole (51) and a plurality of flexible projections provided at the peripheral edge of the open end on one side of the through hole. A grommet (2) having an engagement piece (61) and a pin (3) inserted into the through hole so as to be relatively rotatable, and the pin is inserted from an opening end on the other side of the through hole. A fastener (1) in which the engagement piece is pressed by the pin and spread outward in the radial direction of the through hole, and is engaged with a portion of the engagement piece facing the pin side. A claw (65) is protruded, and a locking projection (25) that engages with the locking claw to restrict relative displacement of the pin to the other side with respect to the through hole is provided on the outer peripheral surface of the pin. And the locking claw to allow relative displacement of the pin to the other side with respect to the through hole. A passage portion (24) displaceable with respect to the pin is formed adjacent to the circumferential direction of the pin, and a tool engaging portion (37) is formed at an insertion end of the pin. Between the rotation position at which the locking claw corresponds to the locking projection and the rotation position at which the locking claw corresponds to the passage portion, the tool engaging with the tool engagement portion is used to prevent the grommet. It is rotated around the axis (A) of the through hole.

According to this configuration, since the tool engaging portion is formed on the insertion end side of the pin, a space for using the tool on the proximal end side of the pin cannot be secured, or the other end is provided on the proximal end portion of the pin. Even when the members are coupled, the tool can be accessed to the tool engaging portion.

In another aspect of the present invention, a concave portion (33) into which the locking claw can enter is formed on the locking convex portion on the outer surface of the pin and the insertion end side of the passage portion. And

According to this configuration, the position of the pin relative to the grommet can be defined by the engagement between the locking claw and the recess. That is, the pin can be temporarily fixed to the grommet.

According to another aspect of the present invention, a rib (31) extending in a longitudinal direction of the pin is extended on an outer surface of the pin, and when the pin is inserted into the through hole, a circumference of the through hole is increased. The rib is disposed between the engagement pieces adjacent in the direction, and the locking claw is disposed at a position corresponding to the recess.

According to this configuration, the rotational position of the pin relative to the grommet can be defined.

In another aspect of the present invention, the rib extends from a portion of the passage portion opposite to the side adjacent to the locking projection in the circumferential direction of the pin to the insertion end side of the pin. It is inclined with respect to the longitudinal direction of the pin so as to advance toward the locking projection as it advances toward the insertion end.

According to this configuration, when the locking claw moves from the passage portion to the recess, the locking claw can be disposed at a position corresponding to the locking projection in the circumferential direction of the pin.

In another aspect of the present invention, an inclined surface (36) extending from the recess to the protruding end of the locking projection is formed at the boundary between the recess and the locking projection. And a step portion (34) in which the concave portion side is lower than the passage portion is formed at a boundary portion between the passage portion and the passage portion.

According to this configuration, when the locking claw moves from the recessed portion to the proximal end side of the pin, the locking claw is prevented from moving from the recessed portion to the passage portion by the step portion, while passing through the inclined surface. The locking projection can be straddled on the base end side.

In another aspect of the present invention, the stepped portion extends while being inclined with respect to the circumferential direction of the pin so as to advance toward the locking convex portion as it proceeds toward the proximal end side of the pin. It is characterized by.

According to this configuration, when the locking claw moves from the recess to the base end side of the pin, the locking claw is guided to the inclined surface side by the stepped portion.

In another aspect of the present invention, a concave groove (66) extending in the circumferential direction of the through hole is formed on the outer surface of the base end portion of the engagement piece opposite to the pin side. It is characterized by.

According to this configuration, the engaging claw is easily bent outward in the radial direction of the through hole due to the concave groove. Therefore, the engagement claw can be combined with the hole to be inserted. Further, since the engaging claw is easily bent outward by inserting the pin, the coupling strength with the hole into which the engaging claw is to be inserted increases.

According to another aspect of the present invention, a temporary fastening hole (103) is recessed in the outer surface of the pin, and a portion between the engagement pieces adjacent in the circumferential direction of the through hole is provided in the temporary fastening hole. A temporary fastening claw (111) to be locked is formed.

According to this configuration, the pin can be temporarily fixed to the grommet by the engagement between the temporary fixing hole and the temporary fixing claw.

Another aspect of the present invention is characterized in that the temporary fixing hole is provided on a proximal end side of the pin with respect to the locking projection.

According to this configuration, the provisional fastening hole is provided on the base end side of the pin, so that the insertion length of the pin with respect to the through-hole of the grommet in the temporary fastening state in which the temporary fastening hole and the temporary fastening claw are engaged with each other. Since it increases, the coupling stability of the pin and the grommet in the temporarily fixed state is improved. That is, the relative positional relationship between the pin and the grommet in the temporarily fixed state is stabilized.

In another aspect of the present invention, a flange (16) projecting outward is provided at the proximal end portion of the pin, and the grommet has an annular boss portion (53) coaxially with the through hole. The protruding end (205) of the flange is slidably contactable with the inner peripheral surface of the boss portion in a state where the pin is inserted into the through hole.

According to this configuration, the protruding end of the flange portion is in sliding contact with the inner peripheral surface of the boss portion, so that the posture of the pin with respect to the grommet is supported. That is, the pin can be prevented from falling with respect to the grommet.

According to the above configuration, it is possible to easily access the tool to the pin in the fastener having the grotto and the pin.

The disassembled perspective view of the fastener which concerns on 1st Embodiment The perspective view of the fastener concerning a 1st embodiment Side view of the pin according to the first embodiment Bottom view of the pin according to the first embodiment VV cross section of Fig. 4 The top view of the grommet concerning a 1st embodiment VII-VII sectional view of FIG. Sectional view showing the temporary connection between the glot and the pin IX-IX cross section of Fig. 8 Sectional view showing the coupling state of the glot and the pin Sectional view showing the released state of the glot and pin The perspective view of the pin concerning a 2nd embodiment The perspective view of the pin concerning a 2nd embodiment The perspective view of the grommet concerning a 2nd embodiment. The perspective view which shows the temporary attachment state of the glot and the pin which concerns on 2nd Embodiment Sectional drawing which shows the temporary attachment state of the grotto and pin which concern on 2nd Embodiment The perspective view of the pin concerning a 3rd embodiment The perspective view which shows the temporary attachment state of the grotto and pin which concern on 3rd Embodiment Sectional drawing which shows the temporary attachment state of the grotto and pin which concern on 3rd Embodiment

Hereinafter, an embodiment in which the present invention is applied to a fastener for attaching a high mount stop lamp to a tailgate of an automobile will be described in detail with reference to the drawings. In the following description, directions are defined based on the coordinate axes shown in the drawings.

(First embodiment)
As shown in FIGS. 1 and 2, the fastener 1 according to the first embodiment includes a grommet 2 and a pin 3 inserted into the grommet 2. The grommets 2 and the pins 3 are each formed by injection molding of a resin. The resin may be, for example, polyacetal (POM).

1, the pin 3 is a shaft member extending along the axis A. One end of the pin 3 in the axis A direction is a base end portion 12, the other end is a tip end portion (insertion end portion) 13, and a portion between the base end portion 12 and the tip end portion 13 is an intermediate portion 14. Hereinafter, the direction along the axis A of the pin 3 will be described as the proximal end side and the distal end side. Further, when viewed from the base end side along the axis A, a clockwise direction around the axis A is simply referred to as a clockwise direction, and a counterclockwise direction around the axis A is simply referred to as a counterclockwise direction.

A disc-shaped first flange 15 protruding in the radial direction is provided at the end of the base end portion 12. A disc-shaped second flange 16 projecting in the radial direction is provided at a portion of the base end portion 12 on the distal end side of the first flange 15. The second flange 16 has a diameter larger than that of the first flange 15 and faces the first flange 15 in parallel through a space. A first tool engagement hole 17 into which a tool can be engaged is formed in the end face on the proximal end side of the first flange 15. In the present embodiment, the first tool engagement hole 17 is a bottomed hole having a cross-shaped cross section, and a tool that is a plus driver can be engaged therewith.

Two convex portions 19 are formed on the lower surface 18 which is the surface facing the tip side of the pin 3 of the second flange 16. The two convex portions 19 are disposed at 180 ° rotation positions around the axis A, and extend along the circumferential direction around the axis A, respectively. Each projecting portion 19 has a protruding end surface (lower end surface) that is parallel to the lower surface 18. The end of each convex portion 19 on the clockwise direction side is a tapered surface.

The tip portion 13 is expanded in a stepwise manner with respect to the intermediate portion 14. Four first ribs 21 are provided on the outer peripheral surface of the intermediate portion 14. The four first ribs 21 extend along the axis A direction at intervals of 90 ° in the circumferential direction. Each first rib 21 has one end continuous with the lower surface 18 of the second flange 16 and the other end continuous with the upper end surface 22 of the tip portion 13. As shown in FIGS. 2 to 4, the first rib 21 protrudes outward in the radial direction of the pin 3 from the tip portion 13. Due to the four first ribs 21, the horizontal section of the intermediate portion 14 has a cross shape.

As shown in FIGS. 1 to 4, on the outer peripheral surface of the tip portion 13, four sets of structures that are rotationally symmetric with respect to the axis A are formed at 90 ° intervals. Since each structure has the same shape, in the following description, one set of structures will be described.

A passage portion 24 is formed on a portion of the outer peripheral surface of the tip portion 13 that is located on the tip side of the first rib 21. The passage portion 24 is a smooth surface of the tip portion 13 extending in the direction of the axis A, and is a flat surface in the present embodiment. The passage portion 24 may be configured so that an object facing or slidingly contacting the passage portion 24 does not have a structure that is caught by an object so that the object can move to the distal end side. In other embodiments, the passage portion 24 may have a curved surface. Moreover, the channel | path part 24 is good also as a groove | channel extended from the base end side to the front end side.

On the counterclockwise direction side of the passage portion 24, a locking convex portion 25 that protrudes radially outward of the tip portion 13 is formed. The locking projection 25 extends along the circumferential direction of the distal end portion 13 and includes a locking surface 26 at a portion facing the proximal end side. The locking convex portion 25 is formed to be separated from the upper end surface 22 of the distal end portion 13 toward the distal end side, and a curved surface 27 that is an outer peripheral surface of the distal end portion 13 is externally provided on the distal end side portion of the locking convex portion 25. Exposed. The end portion of the curved surface 27 in the counterclockwise direction is continuous with the passage portion 24 via the ridgeline. In other embodiment, you may be continuing, forming the channel | path part 24 and a smooth surface, without passing through a ridgeline. The end portion of the curved surface 27 in the clockwise direction is adjacent to the passage portion 24 and the step portion 28 constituting another set of structures. In another embodiment, the step portion 28 may be omitted, and the curved surface 27 and the other set of passage portions 24 may be smoothly connected.

A centering rib 31 extending from the boundary of the counterclockwise end edge of the passage portion 24, that is, from the boundary with the engaging convex portion 25 forming another set of counterclockwise rotation, to the distal end side of the distal end portion 13. Projected. The centering rib 31 is disposed so as to advance clockwise as it advances toward the tip side. In other words, the centering rib 31 extends in a left-handed spiral shape with the axis A as the center. As shown in FIG. 3, the centering rib 31 is disposed substantially on the distal end side of the first rib 21 while being displaced in the circumferential direction of the distal end portion 13. The projecting end (radial outer end) of the centering rib 31 is continuous with the projecting end of the locking projection 25 at the end on the base end side. Thereby, the side surface of the centering rib 31 is continuous with the end surface of the locking projection 25 on the counterclockwise direction side.

As shown in FIGS. 2, 3 and 5, a recess 33 is provided radially inward on the distal end side of the passage portion 24 and the locking protrusion 25 adjacent in the counterclockwise direction. . The end of the recess 33 in the clockwise direction is surrounded (partitioned) by the centering rib 31, and the end in the counterclockwise direction is surrounded by another set of centering ribs 31.

At the boundary portion between the recess 33 and the passage portion 24, a step portion 34 is formed in which the recess 33 side is displaced inward in the radial direction of the distal end portion 13 from the passage portion 24 side. The step portion 34 is inclined and extends with respect to the axis A so as to advance toward the proximal end side as it proceeds in the counterclockwise direction. That is, it extends in a right-handed spiral shape about the axis A. An inclined surface 36 extending from the bottom of the recess 33 to the protruding end of the locking projection 25 is formed at the boundary between the recess 33 and the locking projection 25.

The distal end portion of the distal end portion 13 has a larger outer diameter than the portion provided with the recessed portion 33, while the outer diameter portion is larger than the proximal end portion provided with the curved surface 27 and the passage portion 24. The diameter is small.

One passage portion 24, a locking convex portion 25 and a curved surface 27 adjacent to the passage portion 24 in the counterclockwise direction, a concave portion 33 disposed on the distal end side of the passage portion 24, the passage portion 24 and the The centering rib 31 disposed adjacent to the concave portion 33 in the clockwise direction constitutes a set of structures.

As shown in FIGS. 2 to 5, a second tool engagement hole 37 into which a tool can be engaged is formed at the distal end surface of the distal end portion 13. In the present embodiment, the second tool engagement hole 37 is a bottomed hole having a cross-shaped cross section, and a tool that is a plus driver can be engaged therewith.

As shown in FIGS. 1, 2, 6 and 7, the grommet 2 has a disc-shaped base 52 having a circular through hole 51 with the axis A as the axis. An annular large-diameter boss portion 53 centering on the axis A and projecting to one side is formed on the outer peripheral edge of the base portion 52. Further, on the upper surface of the base portion 52, an annular small-diameter boss portion 54 centering on the axis A is projected in one direction. The inner diameter of the small-diameter boss portion 54 is set larger than the inner diameter of the through hole 51, and the outer diameter of the small-diameter boss portion 54 is set smaller than the inner diameter of the large-diameter boss portion 53. The protruding length of the small-diameter boss portion 54 is set smaller than the protruding length of the large-diameter boss portion 53. At the protruding end of the large-diameter boss portion 53, a claw 55 protruding toward the axis A side is formed.

As shown in FIGS. 2, 6, and 7, four slopes 57 projecting at an angle are provided around the through-hole 51 at equal intervals in the circumferential direction (90 in the portion surrounded by the small-diameter boss portion 54 of the base portion 52. ° interval). Each slope 57 is inclined so as to protrude from the bottom surface (one surface of the base 52) 58 as it advances in the clockwise direction. The end portion of each slope 57 in the clockwise direction is continuous with the bottom surface 58 via a restriction wall 59 extending perpendicularly to the bottom surface 58. Further, the upper end of each slope 57 is continuous with the protruding end of the small-diameter boss portion 54.

At the periphery of the opening end of the through hole 51, four engagement pieces 61 projecting substantially along the axis A direction are formed at equal intervals (90 ° intervals) so as to surround the through hole 51. As shown in FIG. 6, each engagement piece 61 is disposed at a position corresponding to each slope 57 in the circumferential direction around the axis A. A gap 62 is formed between the engagement pieces 61 that are adjacent in the circumferential direction about the axis A. The gap 62 is disposed at a position corresponding to each bottom surface 58 in the circumferential direction centering on the axis A. A notch 63 continuous with the gap 62 is recessed along the axis A direction at a portion corresponding to the gap 62 of the hole wall of the through hole 51. The notch 63 communicates with the bottom surface 58 (the upper surface of the base portion 52) and the lower surface of the base portion 52.

Each engagement piece 61 has a substantially planar surface opposite to the through-hole 51 side, and when viewed from the direction along the axis A, the four engagement pieces 61 each have one rectangular side. Are arranged to constitute. Each engagement piece 61 has flexibility and can be tilted in the radial direction of the through hole 51. Each engagement piece 61 has a locking claw 65 that protrudes toward the axis A side at a portion facing the through-hole 51 side at the tip. Each locking claw 65 has a check surface facing the distal end side of the engagement piece 61. On the outer surface of the base end portion of each engagement piece 61 opposite to the through hole 51 side, a groove 66 is extended in a direction orthogonal to the longitudinal direction of the engagement piece 61. The concave groove 66 communicates with both end faces in the direction orthogonal to the longitudinal direction of the engagement piece 61. Due to the concave groove 66, the base end portion of the engagement piece 61 is thinner in the radial direction of the through hole 51 than the other portions.

Next, a method of connecting the high mount stop lamp 81 to the tail gate 80 using the fastener 1 including the grommet 2 and the pin 3 described above and a connecting structure thereof will be described. As shown in FIG. 8, the tailgate 80 has a plate-like portion 82, and the plate-like portion 82 is formed with an insertion hole 83 that is a through-hole having a square cross section. The high mount stop lamp 81 includes a plate-shaped housing 85 and a rectangular parallelepiped coupling portion 86 projecting from the lower surface of the housing 85. The coupling portion 86 includes a receiving hole 87 that opens to one side surface that is different from the protruding end surface, and a slit 88 that opens to the one side surface while communicating the receiving hole 87 and the protruding end surface. Further, the housing 85 is formed with a tool insertion hole 89 communicating with the receiving hole 87 from the upper surface thereof.

First, the first packing 91 and the second packing 92 are attached to the grommet 2. The first packing 91 and the second packing 92 are each formed from a flexible rubber material. The first packing 91 is a disk-shaped packing having a through-hole having a circular cross section at the center, and as shown in FIGS. 2 and 8, between the large-diameter boss portion 53 and the small-diameter boss portion 54 of the base 52. It is attached, and the nail 55 prevents it from coming off. The thickness of the first packing 91 is set to be larger than the protruding length of the small diameter boss portion 54. The second packing 92 is a plate-shaped packing having a through hole having a square cross section at the center. As shown in FIGS. 1 and 8, four engagement pieces 61 are inserted into the through holes of the second packing 92, and the second packing 92 is disposed along the lower surface side of the base portion 52. The second packing 92 is held at a position along the lower surface side of the base portion 52 when the hole edge of the through hole is caught in the concave groove 66 of each engagement piece 61.

Next, each engagement piece 61 of the grommet 2 is inserted into the insertion hole 83 of the tailgate 80. At this time, each engagement piece 61 is inserted while being tilted toward the axis A side by being pressed by the hole edge of the insertion hole 83. When the insertion of the engagement piece 61 proceeds to a position where the hole edge of the insertion hole 83 corresponds to the groove 66 of each engagement piece 61, each engagement piece 61 returns to the initial position by the restoring force, The hole edge of the insertion hole 83 is caught. The insertion hole 83 has a quadrangular cross section, and the four engaging pieces 61 are arranged in a quadrangular shape, so that the grommet 2 is coupled to the tailgate 80 so as not to rotate about the axis A. In this state, the second packing 92 is sandwiched between the lower surface of the base portion 52 and the peripheral portion of the insertion hole 83 of the plate-like portion 82, and the space between the base portion 52 and the plate-like portion 82 is sealed.

The pin 3 is connected to the high mount stop lamp 81 before and after the

packings

91 and 92 are attached to the grommet 2 and the grommet 2 and the tailgate 80 are connected. This coupling is performed by inserting the first flange 15 and the base end portion 12 of the pin 3 into the receiving hole 87 and the slit 88 of the coupling portion 86 of the high mount stop lamp 81. As shown in FIG. 8, the first flange 15 and the base end portion 12 are supported by the receiving hole 87 and the slit 88 so as to be rotatable around the axis A. Accordingly, the pin 3 is coupled to the high mount stop lamp 81 so as to be rotatable around the axis A.

Next, the pin 3 is inserted into the through hole 51 of the grommet 2 from the tip side. When inserting the pin 3 into the through hole 51, the axial lines of the pin 3 and the through hole 51 are aligned, and the centering rib 31 of the pin 3, the gap 62 of the grommet 2, and the circumferential direction around the axis A The rotational positions of the pin 3 and the grommet 2 are aligned so that the notch 63 corresponds to the centering rib 31 and enter the gap 62 and the notch 63. Thereby, the locking claw 65 of each engagement piece 61 is disposed between the adjacent centering ribs 31 in the circumferential direction around the axis A, that is, at a position corresponding to the recess 33. In this state, when the insertion of the pin 3 into the through hole 51 proceeds, the tip portion 13 of the pin 3 comes into contact with the locking claw 65, and the respective engagement pieces 61 are expanded outward in the radial direction. Further, when the insertion of the pin 3 into the through hole 51 proceeds, as shown in FIG. 8, the locking claw 65 enters the recess 33, and the engagement piece 61 returns to the initial position by the restoring force. In this state, when the locking claw 65 is caught in the recess 33, the grommet 2 and the pin 3 are in a temporarily coupled state in which they are coupled with a relatively weak coupling force. In the temporarily coupled state, by applying a force in the direction in which the pin 3 is extracted from the grommet 2, the locking claw 65 can be detached from the recess 33, and the pin 3 can be extracted from the grommet 2. In the temporarily coupled state, as shown in FIG. 9, the centering rib 31 is disposed in the gap 62 and the notch 63.

When the pin 3 is further inserted into the through hole 51 from the temporarily coupled state, the locking claw 65 slides in the recess 33 toward the proximal end side. At this time, the locking claw 65 is guided to the proximal end side by being guided by the centering ribs 31 provided on both sides of the recess 33. Further, the locking claw 65 is guided to the distal end side of the locking convex portion 25, that is, the inclined surface 36 by the step portion 34 provided at the boundary between the concave portion 33 and the passage portion 24. Thereby, the latching claw 65 slides on the inclined surface 36 toward the proximal end side. At this time, the engaging claw 65 straddles the protruding end of the engaging convex portion 25 toward the base end side while the engaging piece 61 is expanded. When the locking claw 65 exceeds the locking projection 25, the locking claw 65 comes into contact with the curved surface 27 by the restoring force of the engagement piece 61, as shown in FIG. In the coupled state, since the check surface of the locking claw 65 is locked to the locking surface 26 of the locking projection 25, the locking claw 65 cannot cross the locking projection 25 to the tip side. Thereby, the pin 3 cannot be displaced in the removal direction with respect to the through hole 51, and the pin 3 is coupled to the grommet 2. When the locking claw 65 is in contact with the curved surface 27, the engagement piece 61 is in a state of being expanded from the initial position, and the engagement piece 61 cannot be removed from the through hole 51.

In a state where the locking claw 65 is in contact with the curved surface 27, the convex portion 19 provided on the lower surface of the second flange 16 of the pin 3 is a bottom surface 58 of a portion surrounded by the small diameter boss portion 54 of the base portion 52 of the grommet 2. Abut. Further, the lower surface of the second flange 16 comes into contact with the protruding end of the small-diameter boss portion 54. In this state, the first packing 91 is sandwiched between the lower surface of the second flange 16 and the base 52, and the space between the second flange 16 and the base 52 is sealed by the first packing 91.

Next, a method for releasing the coupling state between the grommet 2 and the pin 3 will be described. To release the coupled state, a tool that can be engaged with the first tool engagement hole 17 or the second tool engagement hole 37 is used. In this embodiment, the tool is a Phillips screwdriver. By fitting the tool into the first tool engagement hole 17 through the tool insertion hole 89 from the high mount stop lamp 81 side or the second tool engagement hole 37 from the tailgate 80 side, and rotating the tool The pin 3 is rotated clockwise with respect to the grommet 2. At this time, since the grommet 2 is non-rotatably coupled to the tailgate 80, the pin 3 rotates relative to the high mount stop lamp 81. Note that the reverse rotation is prohibited by the convex portion 19 of the pin 3 coming into contact with the regulating wall 59 of the grommet 2.

When the pin 3 is rotated with respect to the grommet 2 by a tool, the convex portion 19 of the pin 3 slides on the bottom surface 58 of the grommet 2 and reaches the slope 57. Since the convex portion 19 slides in a portion close to the small-diameter boss portion 54 of the bottom surface 58, the convex portion 19 is not caught by the notch 63. At the same time that the convex portion 19 slides on the bottom surface 58, the locking claw 65 slides on the curved surface 27 in the circumferential direction and comes into contact with the passage portion 24. The locking claw 65 moves to a position corresponding to the passage portion 24, thereby avoiding the locking convex portion 25, and can move to the tip side with respect to the pin 3. When the rotation of the pin 3 with respect to the grommet 2 proceeds, as shown in FIG. 11, the convex portion 19 slides on the slope 57, and the pin 3 is displaced with respect to the grommet 2 in the removal direction (the direction of coming out from the through hole 51). To do. Thereby, the latching claw 65 slides the passage portion 24 toward the tip side. The state shown in FIG. 11 is called a fastener 1 release state.

In the state shown in FIG. 11, when a force is applied from the outside and the pin 3 is moved in the removal direction with respect to the grommet 2, the locking claw 65 slides on the passage portion 24 toward the tip side of the pin 3, It reaches the recess 33 beyond the step 34. At this time, the locking claw 65 is guided by the centering rib 31 inclined with respect to the longitudinal direction of the pin 3 and is displaced toward the locking projection 25 in the circumferential direction. As a result, the positional relationship between the grommet 2 and the pin 3 returns to the temporarily coupled state shown in FIG. In this temporarily connected state, as described above, the pin 3 can be extracted from the grommet 2 by applying a force.

In the fastener 1 according to this embodiment, since the second tool engagement hole 37 is formed at the tip portion 13 of the pin 3, even when the tool cannot reach the first tool engagement hole 17. The tool can be engaged with the second tool engagement hole 37 and the pin 3 can be rotated with respect to the grommet 2.

Since the engagement piece 61 has a concave groove 66 at the base end portion, and the thickness at the base end portion is thinner than that of other portions, the engagement piece 61 is expanded by the pin 3. In this case, the engagement piece 61 can be bent from the base end portion and can be strongly engaged with the hole edge of the through hole 51. Further, the coupling strength between the engagement piece 61 and the hole edge of the through hole 51 can be increased by the concave groove 66 being caught by the hole edge of the through hole 51.

(Second Embodiment)
Next, the fastener 100 according to the second embodiment will be described. The fastener 100 is particularly different in the shape of the centering rib 101 as compared to the fastener 1 according to the first embodiment. About the fastener 100, about the structure similar to the fastener 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

12, the four centering ribs 101 of the fastener 100 are extended along the longitudinal direction of the pin 3 on the clockwise direction side of the passage portion 24 and the concave portion 33 in the same manner as the fastener 1. The centering rib 101 is inclined so that the side surface on the clockwise side extends in the longitudinal direction of the pin 3 and the upper half of the side surface on the counterclockwise direction advances toward the tip side. The surface 102 is formed, and the lower half portion extends in the longitudinal direction of the pin 3.

Further, of the four centering ribs 101, the two centering ribs 101 arranged at positions facing each other across the axis A are provided with a temporary fastening hole 103 on a surface facing the radial outside of the axis A. Yes. A guide groove 104 extending toward the distal end side is recessed at the distal end side of the temporary fastening hole 103. A partition wall 105 is formed between the temporary fixing hole 103 and the guide groove 104. As shown in FIG. 13, the other two centering ribs 101 different from the two centering ribs 101 in which the temporary fixing holes 103 are formed extend in the longitudinal direction of the pin 3 on the surface of the axis A facing radially outward. The existing groove 106 is recessed.

As shown in FIG. 14, the notch 63 of the grommet 2 is spanned with a beam 110 extending in the circumferential direction centering on the axis A, and a temporary fastening projecting toward the axis A on the intermediate portion of the beam 110. A nail 111 is formed. A fixed piece 112 having a linear portion protrudes from the outer edge of the large-diameter boss portion 53.

Fastener 100 according to the second embodiment can maintain a state in which grommet 2 and pin 3 are temporarily secured. In order to temporarily fix the grommet 2 and the pin 3, the grommet 2 and the pin 3 are arranged coaxially, and the circumference around the axis A of the centering rib 101 and the beam 110 (the gap 62 and the notch 63) is centered. The pin 3 is inserted into the through hole 51 in a state where the directional positions correspond to each other. Accordingly, the temporary fastening claws 111 formed on the beam 110 enter the guide grooves 104 or the grooves 106 formed on the centering rib 101 and are guided by the guide grooves 104 or the grooves 106. When the insertion of the pin 3 into the through hole 51 proceeds, as shown in FIGS. 15 and 16, the provisional pawl 111 in the guide groove 104 passes over the partition wall 105 and enters the provisional fastening hole 103, and the provisional fastening hole. 103 is locked. This state is referred to as a temporary fastening state of the fastener 100. The temporary fastening claw 111 in the groove 106 continues to be positioned in the groove 106 as it is.

Fastener 100 can be combined with tailgate 80 and high-mount stop lamp 81 in the same manner as fastener 1 after being temporarily secured. By further inserting the pin 3 into the through hole 51 from the temporarily fixed state, the temporary fixing claw 111 moves to the proximal end side of the temporary fixing hole 103 and is detached from the temporary fixing hole 103. At the same time, the locking claw 65 of the grommet 2 enters the recess 33 of the pin 3 and enters a temporarily coupled state. Subsequent transition to the combined state and return from the combined state to the temporary combined state are the same as those of the fastener 1. When the pin 3 is removed from the through-hole 51 from the temporarily coupled state, the temporary pawl 111 slides on the inclined surface 102 of the centering rib 101 and the pin 3 rotates with respect to the grommet 2, The retaining claws 111 do not engage with the temporary retaining holes 103.

The fastener 100 is configured so that the linear portion of the fixing piece 112 of the grommet 2 abuts on a locking structure formed on the tailgate 80 or the high-mount stop lamp 81 so that the tailgate 80 or the high-mount stop lamp 81 is in contact with the fastener 100. It is non-rotatably coupled around the axis A.

The fastener 100 can be delivered and used with the grommet 2 and the pin 3 in a temporarily fixed state, so that preparation and work are facilitated in fastening work of members.

(Third embodiment)
The fastener 200 according to the third embodiment is configured to be in a temporarily fixed state similarly to the fastener 100 according to the second embodiment, and the position of the temporary fixing hole 201 formed in the pin 3 is the temporary position of the fastener 100. It is different from the position of the retaining hole 103. About the fastener 200, about the structure similar to the fastener 100 (fastener 1), the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIG. 17, the pin 3 of the fastener 200 has substantially the same configuration as the fastener 100, but unlike the fastener 100, a temporary retaining hole 103, a guide groove 104, and a partition wall 105 are formed on the centering rib 101. Absent. The pin 3 of the fastener 200 has a temporary fastening hole 201 on the outer surface of the two first ribs 21 protruding in directions opposite to each other among the four first ribs 21. The temporary fixing hole 201 is a bottomed hole that is recessed on the radial center side of the pin 3. In the fastener 200, the temporary fixing hole 201 is formed at a position biased toward the proximal end side of the pin 3 with respect to the position of the temporary fixing hole 103 of the fastener 100.

As shown in FIG. 18, the grommet 2 of the fastener 200 has substantially the same configuration as that of the fastener 100, and has a beam 110 and a temporary fastening claw 111. The temporary fastening claws 111 engage with the temporary fastening holes 201 and maintain the fasteners 200 in the temporary fastening position. As shown in FIGS. 18 and 19, in the temporary fastening position of the fastener 200, the centering rib 101 is disposed in the gap 62 of the grommet 2, and the locking claw 65 of each engagement piece 61 is disposed in the recess 33.

The fastener 200 has a longer insertion length of the pin 3 with respect to the through-hole 51 of the grommet 2 and a shorter projection length of the pin 3 from the grommet 2 in the temporarily fixed state than the fastener 100, so that the pin with respect to the grommet 2 3 is suppressed, and stability is good. Further, the fastener 200 is further improved in stability because the latching claw 65 of each engagement piece 61 has entered the recess 33 in the temporarily fastened state.

The grommet 2 of the fastener 200 has a slope 57 around the through hole 51 as in the case of the fastener 1. Similar to the fastener 1, the pin 3 of the fastener 200 has a convex portion 19 at a position corresponding to the slope 57 of the second flange 16. The pin 3 rotates relative to the grommet 2, and the convex portion 19 slides on the slope 57 from the lower side to the upper side, so that the pin 3 is displaced in the direction of coming out of the through hole 51.

Further, the grommet 2 of the fastener 200 has four projecting pieces 204 protruding from the tip of the large-diameter boss portion 53 in the direction of the axis A at intervals of 90 ° in the circumferential direction. On the outer peripheral portion of the second flange 16 of the pin 3, four cam pieces 205 that can come into contact with the protruding piece 204 are provided protruding outward in the radial direction. When the pin 3 is rotated and the convex portion 29 slides on the slope 57, the cam piece 205 abuts against the protruding piece 204 and displaces the pin 3 in the removal direction. The cam piece 205 is slidably contactable with the inner peripheral surface of the large-diameter boss portion 53 at the protruding end. The cam piece 205 is slidably contacted (contacted) with the inner peripheral surface of the large-diameter boss portion 53, whereby the posture of the pin 3 with respect to the grommet 2 is maintained (that is, the collapse is suppressed).

This is the end of the description of the specific embodiment, but the present invention is not limited to the above-described embodiment, and can be widely modified. For example, the convex portion 19 and the slope 57 are not essential components and may be omitted. In the embodiment, the first flange 15 of the pin 3 is engaged with the receiving hole 87 of the high mount stop lamp 81. However, the coupling structure of the pin 3 and the high mount stop lamp 81 has various known shapes. Can be applied. The fastener according to the present invention is not limited to the tailgate 80 and the high-mount stop lamp 81, and various members can be combined.

DESCRIPTION OF SYMBOLS 1,100,200 ... Fastener, 2 ... Grommet, 3 ... Pin, 15 ... 1st flange, 16 ... 2nd flange, 17 ... 1st tool engagement hole, 19 ... Convex part, 21 ... 1st rib, 24 ... Passage part, 25 ... Locking convex part, 26 ... Locking surface, 27 ... Curved surface, 31, 101 ... Centering rib, 33 ... Recessed part, 34 ... Stepped part, 36 ... Inclined surface, 37 ... Second tool engaging hole, DESCRIPTION OF SYMBOLS 51 ... Through-hole, 52 ... Base part, 57 ... Slope, 58 ... Bottom surface, 59 ... Restriction wall, 61 ... Engagement piece, 62 ... Space | gap, 63 ... Notch, 65 ... Locking claw, 66 ... Groove, 80 ... Tailgate, 81 ... High mount stop lamp, 83 ... Insertion hole, 87 ... Receiving hole, 88 ... Slit, 89 ... Tool insertion hole, 102 ... Inclined surface, 103, 201 ... Temporary fastening hole, 104 ... Guide groove, 105 ... Bulkhead, 106 ... groove, 110 ... beam, 111 ... tentative claw

Claims

A grommet provided with a plurality of flexible engaging pieces projecting from a base portion in which a through hole is formed and a peripheral edge of an opening end on one side of the through hole, and inserted into the through hole so as to be relatively rotatable. A fastener that is inserted into the through hole on the other side of the through hole so that the engagement piece is pressed against the pin and radially outward of the through hole. Because
A locking claw protrudes from a portion of the engagement piece facing the pin side,
On the outer peripheral surface of the pin, a locking projection that engages with the locking claw to restrict relative displacement of the pin with respect to the through hole to the other side, and the other of the pin with respect to the through hole In order to allow relative displacement to the side, a passage portion in which the locking claw can be displaced with respect to the pin is formed adjacent to the circumferential direction of the pin,
A tool engaging portion is formed at the insertion end of the pin,
The pin is moved by a tool that engages the tool engaging portion between a rotation position where the locking claw corresponds to the locking projection and a rotation position where the locking claw corresponds to the passage portion. A fastener that is rotated about the axis of the through hole with respect to the grommet.
The fastener according to claim 1, wherein a concave portion into which the locking claw can be inserted is formed on the locking convex portion on the outer surface of the pin and the insertion end side of the passage portion.
On the outer surface of the pin, a rib extending in the longitudinal direction of the pin is extended,
When the pin is inserted into the through hole, the rib is disposed between the engagement pieces adjacent in the circumferential direction of the through hole, and the locking claw is disposed at a position corresponding to the recess. Fastener according to claim 2 characterized by the above.
The rib extends from the portion of the passage portion in the circumferential direction of the pin that is opposite to the side adjacent to the locking projection to the insertion end side of the pin, and proceeds toward the insertion end side. The fastener according to claim 3, wherein the fastener is inclined with respect to a longitudinal direction of the pin so as to proceed toward the locking convex portion.
An inclined surface from the recess to the protruding end of the locking projection is formed at the boundary between the recess and the locking projection,
5. The step portion in which the step portion where the concave portion side is lower than the passage portion is formed at a boundary portion between the concave portion and the passage portion. Fasteners.
The said step part is inclined and extended with respect to the circumferential direction of the said pin so that it may advance to the said latching convex part side as it progresses to the base end side of the said pin. The described fastener.
The concave surface extending in the circumferential direction of the through hole is formed on the outer surface of the base end portion of the engagement piece on the side opposite to the pin side. The fastener according to any one of the items.
A temporary fastening hole is recessed in the outer surface of the pin,
The temporary fastening claw that is locked to the temporary fastening hole is formed in a portion between the engagement pieces adjacent in the circumferential direction of the through hole. Fastener according to any one item.
The fastener according to claim 8, wherein the temporary fixing hole is provided on a proximal end side of the pin with respect to the locking convex portion.
A flange projecting outward is provided at the base end of the pin,
The grommet is provided with an annular boss portion coaxially with the through hole,
10. The projecting end of the flange can be slidably contacted with the inner peripheral surface of the boss portion in a state where the pin is inserted into the through hole. Fasteners as described in one section.