JP2022021727A - clip - Google Patents

Abstract

To provide a clip that can reduce a load in pulling out a pin from a grommet.SOLUTION: A clip includes: a grommet 11 including a cylindrical leg part 22 with a tip 22B inserted into a retaining hole of a retaining object, and formed with a slit 22S for expanding the tip 22B from the tip 22B toward a base end; and a pin 12 including a shaft part configured to be capable of being pressed into the leg part 22, where the shaft part expands the tip 22B of the leg part 22 from the inside of the leg part 22 while the shaft part is pressed into the leg part 22. The shaft part has a peripheral surface including a projection that projects radially outward of the shaft part. The pin 12 engages the grommet while being pressed so that an end of the slit 22S is opposite to the projection in a radial direction of the shaft part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a clip comprising a grommet and a pin.

A clip for fastening a lining, a panel, or the like to a vehicle body includes a grommet and a pin (see, for example, Patent Document 1). The grommet comprises an annular grommet head having a pin insertion hole and a cylindrical leg extending downward from the pin insertion hole. The pin includes a disk-shaped pin head and a columnar shaft portion extending downward from the pin head. The grommet head is provided with an orbiting cam surface for stopping the rotation of the pin, and the pin head is provided with a cam follower for following along the orbiting cam surface. The legs are configured to expand by pushing in the shaft.

To attach the clip, first, the leg is inserted into the fastening hole to be fastened. Next, the shaft portion is pushed in from the pin insertion hole toward the inside of the leg portion. The legs are pushed open to the shaft as the shaft is pushed. The expanded leg prevents the leg from coming out of the retaining hole and the shaft from coming out of the leg. In this state, the rotation of the pin head for pulling out the pin, that is, the rotation of the cam follower, is locked by the orbiting cam surface, whereby the clip fastens the object to be fastened.

Japanese Unexamined Patent Publication No. 2011-231871

On the other hand, when the clip is removed, first, the pin head is rotated by a rotational force that causes the cam follower to move along the circumferential cam surface. Then, the cam follower is driven along the circumferential cam surface, and the rotation of the pin head is converted into the extraction of the shaft portion.

Here, there are not a few foreign substances such as dust and sand in the environment where the clip is used, such as for fixing a lining or a panel to a vehicle body. When the shaft portion of the pin is pushed into the leg portion in the state where the foreign matter is present in the cylinder of the leg portion, the foreign matter intervening between the shaft portion and the leg portion further expands the leg portion. As a result, the shaft portion of the pin is excessively tightened to the leg portion, which imposes a large load on the rotation of the pin head at the next extraction.

An object of the present invention is to provide a clip capable of reducing the load when pulling out a pin from a grommet.

The clip for solving the above problem is provided with a tubular leg portion having a tip inserted into the fastening hole to be fastened, and a slit for expanding the tip of the leg portion is provided in the leg portion. A grommet formed from the tip to the base end and a shaft portion configured to be pushable into the leg portion are provided, and the shaft portion is in a pushed state in which the shaft portion is pushed into the leg portion, and the shaft portion is the leg portion. A pin for expanding the tip of the portion from the inside of the leg portion is provided. This clip is a clip configured to fasten the fastening target by expanding the leg portion and to convert the rotational force applied from the outside to the pin in the pushed state to the extraction of the shaft portion. .. The pin is provided with a protrusion protruding outward in the radial direction from the peripheral surface of the shaft portion, and the pin in the pushed state has the end portion of the slit and the protrusion portion in the radial direction of the shaft portion. Engage with the grommet so as to face each other.

According to the above clip, a rotational force is applied to the pressed pin from the outside, and the pin starts to rotate. When the pin begins to rotate, the end of the slit and the protrusion are opposed to each other in the radial direction of the shaft. Therefore, the foreign matter intervening between the peripheral surface of the shaft portion and the inner peripheral surface of the leg portion is scraped out of the slit toward the outside of the leg portion when the protrusion starts to rotate. As a result, it is possible to suppress an increase in the rotational load due to the presence of foreign matter, and thus to reduce the load when the pin is pulled out from the grommet.

The clip converts the rotational force into extraction of the shaft portion when the rotational force is in one direction, while the shaft portion is rotated by the rotational force when the rotational force is in the other direction. It is further equipped with a latch cam that regulates. Then, the pin in the pushed state may engage with the grommet so that the upstream end portion in the one direction and the protrusion portion in the slit face each other.

According to the clip, when the rotational force applied to the pin from the outside is in one direction, the cam surface converts the rotational force into the extraction of the shaft portion. On the other hand, when the rotational force applied to the pin from the outside is in the other direction, the cam surface regulates the rotation of the shaft portion by the rotational force. That is, when the shaft portion is pulled out, the rotation of the shaft portion is restricted in one direction. Then, the pin in the pushed state and the grommet are engaged so that the upstream end portion and the protrusion portion in one direction of the slit face each other. Therefore, the foreign matter intervening between the peripheral surface of the shaft portion and the inner peripheral surface of the leg portion is pushed from the upstream end portion to the downstream end portion of the slit when the protrusion starts to rotate, while the leg portion. It is scraped out of. As a result, it is possible to suppress the increase in the rotational load with high accuracy as compared with the configuration in which the rotation of the shaft portion is bidirectional.

In the clip, the protrusion is a downstream end face in the one direction and comprises a first surface facing the upstream end in the pushed state. The angle formed by the first surface and the peripheral surface of the shaft portion may be 90 ° or less.

According to the above clip, since the angle formed by the peripheral surface of the shaft portion and the first surface is 90 ° or less, when the first surface rotates with the rotation of the shaft portion, the peripheral surface and the legs of the shaft portion are formed. Foreign matter interposed between the inner peripheral surface of the portion is likely to be caught on the first surface, which is likely to be scraped off by the first surface. Therefore, when the protrusion starts to rotate, the foreign matter intervening between the peripheral surface of the shaft portion and the inner peripheral surface of the leg portion is more likely to be scraped out of the slit toward the outside of the leg portion.

In the clip, the protrusion comprises a second surface, which is an upstream end surface in the one direction. The angle formed by the second surface and the peripheral surface of the shaft portion may be larger than 90 °.

According to the above clip, since the angle formed by the peripheral surface of the shaft portion and the second surface is larger than 90 °, when the second surface faces the slit, the foreign matter that is swept toward the second surface is the slit. You will be guided towards. As a result, it is possible to smoothly scrape out foreign matter when the protrusion is rotating.

In the clip, the protrusion may have a shape extending along the extending direction of the slit. According to this clip, it is possible to scrape out a large amount of foreign matter from the slit as much as the protrusion extends in the extending direction of the slit.

In the clip, the width of the protrusion in the circumferential direction may be smaller than the width of the slit in the circumferential direction. According to this clip, since the width of the protrusion in the circumferential direction is smaller than the width of the slit, it is possible to prevent foreign matter from being clogged between the protrusion that has passed through the slit and the inner peripheral surface of the leg. Therefore, it is possible to smoothly rotate the shaft portion from the start of rotation to the end of rotation.

According to the present invention, the load when pulling out the pin from the grommet can be reduced.

The perspective view which shows the perspective structure in one Embodiment of a clip. The perspective view which shows the perspective structure of a grommet. The perspective view which shows the perspective structure of a pin. The end view which shows the cross-sectional structure of a pin shaft part and a leg part in the pushed state. FIG. 4 is a partially enlarged cross-sectional view showing an enlarged area A shown in FIG. Sectional drawing showing the state which a clip is used. Sectional drawing showing the state which a clip is used. Sectional drawing to explain the action of a clip. The end view which shows the structure along the IX-IX line shown in FIG. Sectional drawing to explain the action of a clip. FIG. 10 is an end view showing a structure along the XI-XI line shown in FIG. Sectional drawing to explain the action of a clip. FIG. 12 is an end view showing a structure along the line XIII-XIII shown in FIG.

An embodiment of the clip will be described with reference to FIGS. 1 to 13. In the following, the structure of the clip, how to use the clip, and the operation of the clip will be explained in order.

[Clip structure]
The structure of the clip will be described with reference to FIGS. 1 to 5.
As shown in FIG. 1, the clip 10 includes a grommet 11 and a pin 12. The grommet 11 includes a grommet head 21 and legs 22. The grommet head 21 has an annular shape. The leg portion 22 is connected to the back surface 21R of the grommet head 21, and has a tubular shape extending from the back surface 21R toward the fastening direction D1. The leg portion 22 has a base end 22A connected to the back surface 21R and a tip end 22B opposite to the base end 22A. The leg portion 22 includes a slit 22S extending from the tip end 22B toward the base end 22A.

As shown in FIG. 2, the grommet head 21 includes an insertion hole 21A penetrating the grommet head 21 along the thickness direction of the grommet head 21. The insertion hole 21A communicates with the inside of the cylinder in which the leg portion 22 is partitioned. The insertion hole 21A of the grommet head 21 and the inside of the cylinder in which the leg portion 22 is partitioned form a push-in hole into which the pin 12 is pushed.

The grommet head 21 has a front surface 21F opposite to the back surface 21R. A circular hole-shaped recess 21B is formed on the surface 21F. The recess 21B has an annular bottom surface that surrounds the insertion hole 21A. On the bottom surface of the recess 21B, a circumferential cam surface 21S composed of four latch protrusions 21C is located. The four latch protrusions 21C are evenly arranged in the circumferential direction of the recess 21B. Each latch protrusion 21C has a slope shape along one rotation direction. In the example shown in FIG. 2, each latch protrusion 21C has a slope shape that gradually increases in a counterclockwise direction. The leg portion 22 is tapered so that the inner diameter is the smallest in the vicinity of the tip portion 22B. The direction in which the latch protrusion 21C gradually rises, that is, the counterclockwise direction described above is the release direction DR1, and the direction opposite to the release direction DR1 is the push-in direction DR2.

As shown in FIG. 3, the pin 12 includes a pin head 31 and a shaft portion 32. The pin head 31 has a disk shape larger than the insertion hole 21A of the grommet head 21. The shaft portion 32 is connected to the back surface 31R of the pin head 31, and has a columnar shape extending from the back surface 31R along the fastening direction D1. The shaft portion 32 includes an outer peripheral surface 32S confined in the middle in the fastening direction D1. The shaft portion 32 includes a plurality of protrusions 32R protruding from the outer peripheral surface 32S. Each protrusion 32R has a shape extending along the fastening direction D1.

The pin head 31 includes a front surface 31F opposite to the back surface 31R. The grip portion 31A is located on the surface 31F. The grip portion 31A has a shape protruding from the pin head 31 toward the side opposite to the shaft portion 32. The grip portion 31A is a portion that can be gripped by the user of the clip 10. Two cam followers 31B are located on the back surface 31R. The cam follower 31B protrudes from the back surface 31R along the fastening direction D1. When viewed from the viewpoint facing the surface 31F of the pin head 31, the two cam followers 31B face each other with the central axis of the shaft portion 32 interposed therebetween.

The pin 12 is fastened to the grommet 11 by being inserted into the insertion hole 21A of the grommet head 21 and pushed into the cylinder of the leg portion 22. Specifically, after the pin 12 is passed through the insertion hole 21A, the shaft portion 32 is pushed into the leg portion 22 so that the tip portion 32B of the shaft portion 32 protrudes from the tip portion 22B of the leg portion 22. Then, as the pin 12 is rotated along the circumferential direction of the shaft portion 32, each cam follower 31B is driven along the circumferential cam surface 21S. At this time, each cam follower 31B is fitted between the latch protrusions 21C adjacent to each other, and the pin 12 is fastened to the grommet 11.

The cam follower 31B and the latch protrusion 21C allow the cam follower 31B to follow the rotational force of the release direction DR1 described above, and move the cam follower 31B upward according to the slope of the latch protrusion 21C. On the other hand, the cam follower 31B and the latch protrusion 21C temporarily allow the cam follower 31B to follow the rotational force in the pushing direction DR2 described above, and each cam follower 31B is fitted between the latch protrusions 21C adjacent to each other. Regulate further rotation in a jammed state. That is, the cam follower 31B and the latch protrusion 21C form a one-way latch cam that allows rotation in one direction, and convert the rotation of the cam follower 31B into extraction of the shaft portion 32.

The pin 12 is provided with a temporary fixing portion 32C closer to the tip portion 32B than the protrusion portion 32R. The temporary fixing portion 32C is a portion whose diameter is reduced in the fastening direction D1. The temporary fixing portion 32C includes four temporary fixing protrusions 32C1 and a groove 32C2 sandwiched by two temporary fixing protrusions 32C1 in the circumferential direction of the shaft portion 32.

When only the tip portion 32B of the pin 12 protrudes from the leg portion 22 and the tip portion 22B of the leg portion 22 is located at the temporary fixing portion 32C, the pin 12 is temporarily fixed to the grommet 11. In the state where the pin 12 is temporarily fixed to the grommet 11, the tip 22B of the leg portion 22 is located in the groove 32C2 of the temporary fixing portion 32C, and the temporary fixing protrusions different from each other are provided in each slit 22S of the leg portion 22. 32C1 is located. At this time, the pin 12 is restricted from rotating with respect to the grommet 11 with the central axis of the pin 12 as the rotation axis.

The pin 12 includes a regulating portion 32D between the protrusion 32R and the temporary fixing portion 32C in the fastening direction D1. In this embodiment, the pin 12 includes four regulatory units 32D. The regulating portions 32D are evenly arranged in the circumferential direction of the shaft portion 32. The restricting portion 32D has a shape protruding outward in the radial direction from the outer peripheral surface 32S of the shaft portion 32. In the fastening direction D1, each regulation unit 32D is adjacent to a groove 32C2 different from each other.

FIG. 4 shows the structure of the shaft portion 32 and the structure of the leg portion 22 in a cross section along a plane orthogonal to the fastening direction D1. In addition, FIG. 4 shows the structure of the shaft portion 32 in the pushed state in which the shaft portion 32 is pushed into the leg portion 22 and the tip 22B of the leg portion 22 is caught by the regulation portion 32D, and the leg portion. The structure of 22 is shown.

As shown in FIG. 4, the slit 22S has a first end portion 22S1 and a second end portion 22S2 in the circumferential direction of the leg portion 22. The protrusion 32R faces the first end 22S1 in the pushed state. In the pushed state, the pin 12 rotates along the above-mentioned release direction DR1, that is, the direction from the first end portion 22S1 to the second end portion 22S2 along the circumferential direction of the leg portion 22. The pushed state is released by rotating the pin 12 in the release direction DR1.

As described above, since the latch protrusion 21C has a slope shape, the pin 12 fastened to the grommet 11 can rotate in the release direction DR1 but cannot rotate in the push-in direction DR2. In the example shown in FIG. 4, the pin 12 can rotate clockwise, but cannot rotate counterclockwise. Therefore, when the fastening of the pin 12 begins to be released, that is, when the shaft portion 32 begins to rotate, the protrusion 32R rotates only in the direction from the first end portion 22S1 to the second end portion 22S2.

The shaft portion 32 includes the same number of protrusions 32R as the slits 22S. The four protrusions 32R are evenly distributed at intervals in the circumferential direction of the shaft portion 32. In the cross section orthogonal to the fastening direction D1, the portion of the outer peripheral surface 32S of the shaft portion 32 located between the two protrusions 32R has an arc shape such that the center of curvature is located in the shaft portion 32. The width W32R of the protrusion 32R along the circumferential direction of the leg portion 22 is smaller than the width W22S of the slit 22S along the circumferential direction of the leg portion 22.

FIG. 5 is an enlarged view of the region A shown in FIG.
As shown in FIG. 5, in a cross section along a plane orthogonal to the fastening direction D1, the protrusion 32R includes a first surface 32R1 and a second surface 32R2. The first surface 32R1 is an end surface on the downstream side in the release direction DR1 of the pin 12. The second surface 32R2 is an upstream end surface of the pin 12 in the release direction DR1. The first angle θ1 formed by the portion of the outer peripheral surface 32S connected to the first surface 32R1, that is, the portion located downstream of the first surface 32R1 in the release direction DR1 and the first surface 32R1 is 90 ° or less. Is preferable. In this embodiment, the first angle θ1 is 90 °. The second angle θ2 formed by the portion of the outer peripheral surface 32S connected to the second surface 32R2, that is, the portion located upstream of the second surface 32R2 in the release direction DR1, and the second surface 32R2 is larger than 90 °. Is preferable.

The protrusion 32R includes a connection surface 32R3 that connects the first surface 32R1 to the second surface 32R2. The connection surface 32R3 is located between the first surface 32R1 and the second surface 32R2 in the release direction DR1 of the pin 12. The connecting surface 32R3 has an inclination away from the center of the shaft portion 32 along the direction from the second surface 32R2 to the first surface 32R1.

[How to use the clip]
The usage of the clip 10 will be described with reference to FIGS. 6 and 7. FIG. 6 shows a state in which the clip 10 does not fasten the fastening target T. On the other hand, FIG. 7 shows a state in which the clip 10 fastens the fastening target T. The object to be fastened is, for example, a laminated body of a lining and a vehicle body, and in order to fasten the lining to the vehicle body, a clip is attached to the fastening hole of the object to be fastened.

As shown in FIG. 6, when the clip 10 is attached to the fastening target T, the grommet 11 is inserted into the fastening hole TH of the fastening target T with the pin 12 temporarily fixed to the grommet 11. .. As a result, the grommet 11 is attached to the fastening target T so that the outer surface of the leg portion 22 is in contact with the inner surface of the fastening hole TH. At this time, the pin 12 is in a state where the rotation with respect to the grommet 11 is restricted. Further, the tip 22B of the leg portion 22 is located at the temporary fixing portion 32C of the pin 12.

As shown in FIG. 7, the pin 12 is pushed along the fastening direction D1. As a result, the tip 22B of the leg portion 22 comes out of the temporary fixing portion 32C of the pin 12. Then, in the fastening direction D1, when the tip 22B of the leg portion 22 is pushed in until it is positioned closer to the base end portion 32A than the restricting portion 32D, the leg portion 22 is pushed toward the outside in the radial direction of the leg portion 22. Can be unfolded. At this time, the pin 12 is turned in the pushing direction DR2, and the cam follower 31B of the pin head 31 is fitted between the two latch protrusions 21C, whereby the pin 12 transitions to the pushing state. That is, the pin 12 is fastened to the grommet 11.

[Clip action]
The operation of the clip 10 will be described with reference to FIGS. 8 to 13. In addition, in FIGS. 8, 10, and 12, for convenience of illustration, the illustration of the fastening target T is omitted. Further, FIG. 9 shows a cross-sectional structure along the IX-IX line shown in FIG. FIG. 11 shows a cross-sectional structure along the XI-XI line shown in FIG. FIG. 13 shows a cross-sectional structure along the line XIII-XIII shown in FIG.

As shown in FIG. 8, in the state where the clip 10 fastens the fastening target T, a gap is formed between the shaft portion 32 of the pin 12 and the leg portion 22 of the grommet 11 due to the deformation of the leg portion 22. To. Since the gap communicates with the outside of the leg portion 22 through the slit 22S, the foreign matter S enters the leg portion 22 from the outside of the leg portion 22. Alternatively, even when the pin 12 is pushed in with the foreign matter S present in the leg portion 22, the foreign matter S is present in the leg portion 22. The foreign matter S is a mass of sand or dust, and further, sand or dust hardened by evaporation of water that has entered the leg portion 22 through the slit 22S.

As shown in FIG. 9, when a long period of time elapses with the clip 10 attached to the fastening target T, foreign matter S is deposited on the entire circumferential direction of the shaft portion 32. When releasing the fastening of the pin 12 to the grommet 11 in this state, the pin 12 is turned in the release direction DR1, that is, the pin 12 is moved along the direction from the first end 22S1 to the second end 22S2 of the slit 22S. Rotate. At this time, the protrusion 32R of the shaft portion 32 moves along the direction from the first end portion 22S1 to the second end portion 22S2. Since the protrusion 32R moves from the first end 22S1 to the second end 22S2 in a state of facing the slit 22S in the radial direction of the shaft 32, the protrusion 32R is moved around the protrusion 32R moved by the protrusion 32R. The positioned foreign matter S easily moves toward the slit 22S. This makes it possible to reduce the load when removing the pin 12 from the grommet 11.

Further, as described above, since the first angle θ1 set in the shaft portion 32 is 90 ° or less, the foreign matter S located around the protrusion 32R is moved outward in the radial direction of the shaft portion 32. Cheap. Further, in the release direction DR1, the other protrusion 32R located upstream of the second surface 32R2 also moves the foreign matter S toward the downstream. At this time, since the second angle θ2 set in the shaft portion 32 is larger than 90 °, when the second surface 32R2 faces the slit 22S, the foreign matter S moving toward the downstream moves toward the slit 22S. It will be guided.

As shown in FIG. 10, according to the clip 10 of the present embodiment, the foreign matter S deposited around the shaft portion 32 can be scraped out toward the outside in the radial direction of the shaft portion 32, so that the pin 12 can be removed. It is possible to pull up the pin 12 along the fastening direction D1 while turning it in the releasing direction DR1. That is, it is possible to start scraping out the foreign matter S and extracting the shaft portion 32 almost at the same time.

As shown in FIG. 11, since the protrusion 32R scrapes the foreign matter S outward in the radial direction of the shaft portion 32 while the pin 12 is rotated and pulled up, most of the foreign matter S located in the leg portion 22. Moves toward the slit 22S.

As shown in FIG. 12, by further pulling up the pin 12, the restriction on the movement of the leg 22 by the restricting portion 32D is released, whereby the tip 22B of the leg portion 22 is positioned at the temporary fixing portion 32C of the pin 12. do. At this time, since the tip 22B of the leg portion 22 is located in the groove 32C2 of the temporary fixing portion 32C, the state in which the tip 22B is expanded is released. As a result, the state in which the grommet 11 fastens the fastening target T is released, so that the grommet 11 can be removed from the fastening hole TH of the fastening target T.

As shown in FIG. 13, by pulling up the pin 12, that is, by rotating the pin 12, most of the foreign matter S located in the leg 22 is scraped out of the leg 22 through the slit 22S. Therefore, since the pin 12 can be refastened by the grommet 11, the clip 10 can be reused.

As described above, according to one embodiment of the clip, the effects described below can be obtained.
(1) When the rotational force of the release direction DR1 is applied to the pin 12 in the pushed state and the pin 12 starts to rotate, the first end portion 22S1 of the slit 22S and the protrusion 32R face each other. Therefore, the foreign matter S interposed between the outer peripheral surface 32S of the shaft portion 32 and the inner peripheral surface of the leg portion 22 is scraped out from the slit 22S toward the outside of the leg portion 22 when the protrusion 32R starts to rotate. Is done. As a result, it is possible to suppress an increase in the rotational load due to the presence of the foreign matter S, and thus to reduce the load when the pin 12 is pulled out from the grommet 11.

(2) When the rotational force applied to the pin 12 is the release direction DR1, the circumferential cam surface 21S converts the rotational force into the extraction of the shaft portion 32. On the other hand, when the rotational force applied to the pin 12 is the pushing direction DR2, the circumferential cam surface 21S restricts the rotation of the shaft portion 32 by the rotational force. Then, in a state where the rotation of the shaft portion 32 is restricted, the pushed state is set, and the first end portion 22S1 which is the upstream end portion of the slit 22S and the protrusion 32R face each other. Therefore, the foreign matter S interposed between the outer peripheral surface 32S of the shaft portion 32 and the inner peripheral surface of the leg portion 22 is located at the downstream end portion from the first end portion 22S1 of the slit 22S when the protrusion 32R starts to rotate. While being pushed toward a certain second end portion 22S2, it is scraped out of the leg portion 22. As a result, it is possible to suppress the increase in the rotational load with high accuracy as compared with the configuration in which the rotation of the shaft portion 32 is bidirectional.

(3) If the angle formed by the outer peripheral surface 32S of the shaft portion 32 and the first surface 32R1 is 90 ° or less, between the outer peripheral surface 32S of the shaft portion 32 and the inner peripheral surface of the leg portion 22. The intervening foreign matter S is likely to be caught on the first surface 32R1 and thereby easily scraped off by the first surface 32R1.

(4) If the angle formed by the outer peripheral surface 32S and the second surface 32R2 of the shaft portion 32 is larger than 90 °, when the second surface 32R2 faces the slit 22S, it faces the second surface 32R2. The foreign matter S that is swept away is guided toward the slit 22S. As a result, it is possible to smoothly scrape out the foreign matter S when the protrusion 32R is rotating.

(5) As the protrusion 32R extends along the extending direction of the slit 22S, a large amount of foreign matter S can be scraped out from the slit 22S.

(6) Since the width W32R of the protrusion 32R in the release direction DR1 is smaller than the width W22S of the slit 22S, foreign matter S may be clogged between the protrusion 32R passing through the slit 22S and the inner peripheral surface of the leg 22. It can be suppressed. Therefore, it is possible to smoothly rotate the shaft portion 32 from the start of rotation to the end of rotation of the pin 12.

The above embodiment can also be modified and implemented as follows.
The width W32R of the protrusion 32R may be equal to the width W22S of the slit 22S, or may be larger than the width W22S of the slit 22S.

The protrusions 32R may be arranged along the extending direction of the slit 22S.
The angle formed by the outer peripheral surface 32S of the shaft portion 32 and the second surface 32R2 can be changed to less than 90 °, and the angle formed by the outer peripheral surface 32S of the shaft portion 32 and the first surface 32R1 is 90 °. It is also possible to change to a larger angle.

The engagement between the grommet 11 and the pin 12 is not limited to the engagement by the latch cam, and may be configured such that the convex portion provided by the pin 12 is fitted into the concave portion formed in the grommet 11, for example. The point is that the rotation of the pin 12 with respect to the grommet 11 is restricted in the pushed state, that is, the protrusion 32R is positioned with respect to the slit 22S, and the pin 12 is released in the release direction DR1 by receiving the rotational force for disengaging the engagement. Any configuration may be used as long as it is rotated to.

T ... Fastening target TH ... Fastening hole W22S, W32R ... Width 10 ... Clip 11 ... Grommet 12 ... Pin 22 ... Leg 22S ... Slit 32 ... Shaft 32R ... Protrusion

Claims (6)

A cylindrical leg having a tip to be inserted into the fastening hole to be fastened is provided, and a slit for expanding the tip of the leg is formed from the tip of the leg toward the base end. With the grommet
A shaft portion configured to be pushable into the leg portion is provided, and the shaft portion has a pin that expands the tip of the leg portion from the inside of the leg portion in a pushed state in which the shaft portion is pushed into the leg portion. , Equipped with
A clip configured to fasten the object to be fastened by expanding the leg portion and to convert a rotational force applied from the outside to the pin in the pressed state to pull out the shaft portion.
It is provided with a protrusion that protrudes from the peripheral surface of the shaft portion toward the radial outer side of the shaft portion.
The pin in the pushed state is a clip that engages with the grommet so that the end portion of the slit and the protrusion portion face each other in the radial direction of the shaft portion. A latch cam that converts the rotational force into extraction of the shaft portion when the rotational force is in one direction, while restricting the rotation of the shaft portion by the rotational force when the rotational force is in the other direction. Further prepared,
The clip according to claim 1, wherein the pin in the pushed state engages with the grommet so that the upstream end portion in one direction of the slit and the protrusion portion face each other. The protrusion is an end surface on the downstream side in the one direction, and includes a first surface facing the upstream end portion in the pushed state.
The clip according to claim 2, wherein the angle formed by the first surface and the peripheral surface of the shaft portion is 90 ° or less. The protrusion comprises a second surface, which is an upstream end surface in the one direction.
The clip according to claim 2 or 3, wherein the angle formed by the second surface and the peripheral surface of the shaft portion is larger than 90 °. The clip according to any one of claims 1 to 4, wherein the protrusion has a shape extending along the extending direction of the slit. The clip according to any one of claims 1 to 5, wherein the width of the protrusion in the circumferential direction is smaller than the width of the slit in the circumferential direction.

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