JP6286774B2 - clip - Google Patents

Description

  The present invention relates to a clip used to attach an attachment member such as an interior part or a protective cover to a member to be attached such as an automobile panel. More specifically, the present invention relates to a clip that consists of two parts, a pin and a grommet, and can be reused.

  Generally, a clip is used to attach an attachment member such as an interior part or a protective cover to a member to be attached such as an automobile panel. Many such clips have been provided in the past. A combination of a pin and a grommet, in which a pin is press-fitted into the opening of the body of the grommet, and a locking claw provided on the body is expanded to engage with a mounting hole of a member to be mounted (panel). Many are used.

Such a clip can easily attach the attachment member to the attached member simply by pressing the pin against the grommet. There is also a clip in which the pin and the grommet can be removed by rotating the pin after fitting the pin and the grommet.
However, the clip that is removed by rotating the conventional pin does not know how far it can be removed and may rotate the pin too much. In addition, in the middle of removing the pin, the pin may be accidentally pushed again.

Patent Document 1 discloses a mounting member (grommet) having a jaw-shaped portion having a through hole and an elastic leg piece provided in a cylindrical shape on the other side of the jaw-shaped portion and having a convex portion formed on the inner surface. And a clip for fastening a member including a flange and a leg member (pin) provided with a large-diameter portion and a small-diameter portion projecting from the flange. A cam portion is provided in the circumferential direction from the small diameter portion to the large diameter portion of the leg member. When the leg member is inserted into the attachment member, the convex part of the elastic leg piece rides on the cam part, the elastic leg piece is expanded, and the member is attached.
The leg member is provided with a protrusion having at least one inclined surface, and the attachment member is provided with a protrusion wall having an inclined surface. When the leg member is rotated in a state where the elastic leg piece is expanded, the projecting wall comes into contact with the inclined surface of the projecting part and guides the leg member in a direction to be detached from the mounting member.

The clip of Patent Document 1 is able to simplify the structure of the mounting portion by providing a protrusion having at least one inclined surface and a protrusion wall that abuts the inclined surface of the protrusion.
However, the clip of Patent Document 1 is provided with means for stopping rotation of the leg member when the attachment member and the leg member are removed by rotating the jig engaging part of the leg member with a jig such as a screwdriver. Not. It does not know how far the leg member can be rotated, and the leg member is turned more than necessary.
Moreover, in order to remove a clip, after rotating a leg member, a leg member may be pushed in accidentally and a leg member and an attachment member may be combined again.

Patent Document 2 discloses a snap fit structure including a fixing member (grommet) and a snap member (pin). The fixing member has a pedestal formed with a hollow through hole and extended to one side, and a plurality of abutting portions are provided on the outer surface of the pedestal. A positioning recess is provided on the side of the fixing member opposite to the base, and a plurality of inclined guide portions are formed in the positioning recess.
The snap member has a locking rib extended to one side, and the locking rib is fitted into the through hole of the fixing member. A slot for loosening with a tool such as a screwdriver is provided on the other side of the snap member. A guide projection is provided on the back side of the force application portion. The locking rib is provided with a plurality of ribs and a plurality of positioning slots.
The positioning hook of the pedestal is fitted into the positioning slot of the locking rib, and the mounting member is fixed by expanding the pedestal.

The clip of Patent Document 2 can be easily assembled by using a hand and holding the snap member without using a tool. When the force-applying portion of the snap member is rotated counterclockwise, the guide projection is brought into contact with the guide portion, and the snap member moves in a direction to be removed, and can be removed.
However, like the clip of Patent Document 1, when the clip of Patent Document 2 is rotated to remove the snap member, no means for stopping the rotation is provided. Moreover, after rotating a snap member, a snap member may be pushed in accidentally again.

  Patent Document 3 includes a main body portion (grommet) having a leg portion formed with a locking portion that protrudes inward, a pin that protrudes downward from the head portion, and has a shaft portion in which a concave portion is formed on a side surface, The push rivet (rivet) which consists of is disclosed. By pressing the pin, the leg portion is expanded and the locking portion is locked in the recess to attach the object to be fastened. After mounting, when the pin is rotated by the rotating means formed on the head of the pin, the protruding piece formed below the head of the pin comes into contact with the slope of the push-up portion formed on the main body, Pushed up, the push rivet can be removed. The rotating means has a large groove part and a small groove part having a smaller width than the large groove part.

The push rivet disclosed in Patent Document 3 locks the main body and the pin by engaging and rotating a member such as a coin with the large groove even without a rotating tool such as a screwdriver that fits into the small groove. Can be removed from.
However, the clip of Patent Document 3 is also not provided with means for stopping rotation when it is rotated to remove the pin. Also, after rotating the pin, the pin may be accidentally pushed again.

Therefore, there has been a demand for a clip that can prevent the pin from being turned too much when it is removed. There was a need for a clip that could prevent the pins from being pushed in again during removal.
In other words, there is a need for a clip that does not require skilled work and can be removed and reused by anyone.

JP 2011-231850 A Utility Model Registration No. 3182541 Utility Model Registration No. 3126590

Accordingly, an object of the present invention is to provide a clip that can prevent excessive rotation of the pin when removing the clip, and can prevent the pin from being pushed in again during removal.
Another object of the present invention is to provide a clip that can be reliably reused.

In order to achieve this object, a first aspect of the present invention is a clip comprising a pin and a grommet having an opening for inserting the pin in order to attach the attachment member to the attached member,
The pin is a disk-shaped pin flange,
A plurality of guide ribs formed on the lower surface of the pin flange;
A pin shaft portion extending below the guide rib,
The grommet includes a cylindrical grommet flange,
A plurality of raised slopes for raising the lower surface of the guide rib, the height gradually increasing along the circumferential direction inside the grommet flange;
A plurality of sloped upper surfaces adjacent to the raised slope and having a flat upper surface for contacting the lower surface of the guide rib;
A clip having a plurality of over-rotation preventing walls extending in a longitudinal direction adjacent to the upper surface of the slope and extending in contact with a side surface of the guide rib.

  When the guide rib of the pin is provided, and the grommet has a push-up slope, an upper surface of the slope, and an over-rotation prevention wall, the pin guide rib moves along the push-up slope of the grommet by rotating the pin. It is pushed up to stop the rotation by coming into contact with the over-rotation prevention wall on the upper plane of the slope, and the main fitting state can be released.

It is preferable to have a plurality of rotation suppression ribs that are adjacent to the raised slope and extend in the longitudinal direction to engage with the outer periphery of the guide rib.
This fitting state is maintained by holding the guide rib between the rotation suppression rib and the over-rotation prevention wall.

It is preferable that the number of the rotation suppression ribs of the grommet, the push-up slope, the slope upper plane, and the over-rotation prevention wall is four respectively.
If there are four rotation suppression ribs, push-up slopes, slope top planes, and over-rotation prevention walls in this order, the pins can be lifted from the grommet by rotating the pins by 90 °.

The grommet further includes
A pair of drop-off prevention claws extending obliquely downward from the lower surface of the grommet flange;
A grommet trunk formed below the grommet flange;
It is preferable to have a pair of spread legs formed by opening a slit between the grommet trunks.

If the grommet has a pair of drop-off preventing claws extending obliquely downward from the lower surface of the grommet flange, it can be used to prevent the pin from coming off.
When the grommet has a pair of spread legs, the spread leg tip portion spreads and the attachment member can be attached.

If the pin has a guide rib and the grommet has a raised slope, when the pin is rotated, the guide rib can slide on the raised slope and move in a direction to release the pin.
When the grommet has the slope upper plane and the over-rotation prevention wall, the guide rib comes into contact with the over-rotation prevention wall on the slope upper plane when rotating to remove the pin. Therefore, it is possible to prevent the pins from being turned too much.

The pin shaft portion of the pin is formed on a cylindrical pin shaft upper portion and a lower circumference of the pin shaft upper portion, and has a plurality of pin outer circumferences having a larger diameter than the upper portion of the pin shaft and an upper surface being an inclined surface. A pin positioning groove between the pin outer periphery and the pin shaft lower portion formed below the pin outer periphery, and a cylindrical shape having a smaller diameter than the pin shaft lower portion formed below the pin shaft lower portion It is preferable to have a pin lower end cylindrical part.
It is preferable that a cross section of the lower portion of the pin shaft is substantially square and each side is gently curved.

  If a pin positioning groove is formed between the pin outer periphery and the pin outer periphery, the pin and the grommet are moved when the pin is pushed into the grommet by positioning the grommet's drop prevention claw in the pin positioning groove. It can be prevented from rotating.

In the pin positioning groove of the pin, it is preferable that a drop prevention claw engaging shelf for engaging the drop prevention claw of the grommet is formed.
If there is a drop-off prevention claw engagement shelf in the pin positioning groove, the drop-off prevention claw can be engaged with the drop-off prevention claw engagement shelf, and the pin can be held so as not to drop out in the temporarily fitted state.

In the temporary fitting state, it is preferable that the drop-out preventing claw of the grommet enters the pin positioning groove of the pin, and the pin is restricted so as not to rotate with respect to the grommet.
When the drop-off preventing claw is in the pin positioning groove, the pin can be pushed in from the temporarily fitted state without rotating with respect to the grommet.

In the temporarily fitted state, the drop-off prevention claw engagement shelf and the drop-off prevention claw of the grommet are engaged, and the pin is prevented from being detached,
It is preferable that the pair of expanding leg tips of the grommet engage with the lower side of the pin lower end cylindrical portion to hold the pin so that it is not accidentally pushed.

When the tip end portions of the pair of expanding legs are engaged with the lower side of the pin lower end cylindrical portion in the temporarily fitted state, the pin can be held so as not to be pushed easily.
When the drop-off preventing claw engaging shelf and the drop-off preventing claw are engaged in the temporarily fitted state, the pin is held so as not to come out of the temporarily fitted state.

In this fitting state, the outer peripheral portion of the guide rib of the pin is locked between the over-rotation prevention wall of the grommet and the rotation suppression rib,
The distal end portion of the spread leg is expanded by the lower portion of the pin shaft, and the distance between the pair of spread legs is widened.
It is preferable that a pin shaft convex portion formed at the upper portion of the pin shaft engages with the drop-out preventing claw and the pin is prevented from coming off.

When the outer peripheral portion of the guide rib of the pin enters between the over-rotation prevention wall and the rotation suppression rib in the fully fitted state, the pin is held so as not to rotate easily.
When the distal end portion of the spread leg is pushed and spread by the lower portion of the pin shaft, the mounted member and the mount member can be sandwiched between the grommet flange and the spread leg.
When the pin shaft convex portion is engaged with the drop-off preventing claw, the pin is reliably prevented from coming off.

When the pin is rotated in the fully fitted state, the guide rib of the pin is disengaged from the engagement between the rotation suppression rib and the over-rotation prevention wall, and along the push-up slope of the grommet. Pushed up,
It is preferable that the guide rib is stopped from abutting against the over-rotation preventing wall on the slope upper plane.

By rotating the pin, the guide rib is pushed up along the pushed-up slope, and this fitting state can be easily released.
Since the guide rib is brought into contact with the over-rotation prevention wall on the upper surface of the inclined surface and stopped from rotating, the pin is not rotated more than necessary.

When the pin that is in contact with the over-rotation prevention wall is pulled up, the lower surface of the drop-out prevention claw comes into contact with the inclined surface of the pin outer peripheral portion, and the pin rotates,
The drop-off prevention claw of the grommet enters the pin positioning groove of the pin, engages with the drop-off prevention claw engagement shelf,
It is preferable that the tip end portions of the pair of expanding legs of the grommet engage with the lower side of the pin lower end cylindrical portion and return to the temporarily fitted state.

  When the pin is pulled up with the finger, the pin is rotated, and the drop-off preventing claw enters the adjacent pin positioning groove that is shifted by 90 ° from the initial temporary fitting state. When the grommet and the pin return to the temporarily fitted state, they can be reused as they are.

A second aspect of the present invention is a clip comprising a pin and a grommet having an opening for inserting the pin for attaching the attachment member to the attached member,
The pin is a disk-shaped pin flange,
A plurality of guide ribs formed on the lower surface of the pin flange;
A pin shaft portion extending below the guide rib,
The grommet includes a cylindrical grommet flange,
A pair of drop-off prevention claws extending obliquely downward from the lower surface of the grommet flange;
A grommet trunk formed below the grommet flange;
It is a clip characterized by having a pair of expansion legs formed by making a slit between the grommet trunks.

  A pin positioning groove extending in the vertical direction is formed in the pin shaft portion, and the drop-out preventing claw of the grommet enters the pin positioning groove, and the pin is restricted so as not to rotate with respect to the grommet. preferable.

The grommet is formed inside the grommet flange, and includes a plurality of rotation suppression ribs extending in the vertical direction, and a plurality of over-rotation preventing walls extending in the vertical direction.
It is preferable that the outer peripheral portion of the guide rib of the pin is locked between the rotation suppression rib of the grommet and the over-rotation prevention wall.

A third aspect of the present invention is a pin that constitutes a clip together with a grommet having an opening to attach the attachment member to the attached member,
A disk-shaped pin flange;
A plurality of guide ribs formed on the lower surface of the pin flange;
A pin shaft portion extending below the guide rib,
The pin shaft portion is formed on an upper portion of the pin shaft and a lower circumference of the upper portion of the pin shaft, and has a plurality of pin outer peripheral portions having a larger diameter than the upper portion of the pin shaft and an upper surface being a slope, and the pin outer periphery A pin positioning groove between the pins, a pin shaft lower part formed below the pin outer peripheral part, and a pin lower end cylindrical part formed below the pin shaft lower part and having a smaller diameter than the pin shaft lower part It is a pin characterized by this.

A fourth aspect of the present invention is a grommet that constitutes a clip together with a pin for attaching the attachment member to the attached member, and has an opening for inserting the pin.
A cylindrical grommet flange;
A plurality of rotation restraining ribs formed in a circumferential direction inside the grommet flange;
A plurality of raised slopes that gradually increase in height along the inside of the grommet flange;
A plurality of sloped upper surfaces adjacent to the raised slope and having a flat upper surface;
A plurality of over-rotation preventing walls extending in a longitudinal direction adjacent to the upper surface of the slope;
A pair of drop-off prevention claws extending obliquely downward from the lower surface of the grommet flange;
A grommet trunk formed below the grommet flange;
A pair of spread legs formed by opening a slit between the grommet barrels,
It is a grommet characterized by this.

According to the present invention, it is possible to provide a clip that can prevent the pin from being turned excessively when removing the clip, and that can prevent the pin from being pushed in again during the removal operation.
In addition, a clip that can be reliably reused can be provided.

It is a perspective view of the grommet of a clip by an embodiment of the present invention. It is a top view of the grommet of FIG. It is a front view of the grommet of FIG. It is a bottom view of the grommet of FIG. It is a right view of the grommet of FIG. It is sectional drawing along the AA line of the grommet of FIG. It is sectional drawing along the BB line of the grommet of FIG. It is a perspective view of the pin of the clip by the embodiment of the present invention. FIG. 9 is a top view of the pin of FIG. 8. It is a front view of the pin of FIG. It is a bottom view of the pin of FIG. It is a right view of the pin of FIG. FIG. 10 is a cross-sectional view taken along line CC of the pin of FIG. 9. It is sectional drawing along the DD line of the pin of FIG. It is sectional drawing along the EE line of the pin of FIG. FIG. 9 is a top view of the clip in a state where the grommet of FIG. 1 and the pin of FIG. 8 are temporarily fitted. It is a front view of the clip of FIG. It is sectional drawing along the FF line of the clip of FIG. It is sectional drawing along the GG line of the clip of FIG. It is sectional drawing along the HH line of the clip of FIG. It is sectional drawing along the JJ line of the clip of FIG. FIG. 9 is a top view of the clip in a state where the grommet of FIG. 1 and the pin of FIG. 8 are fully fitted. It is sectional drawing along the KK line | wire of the clip of FIG. It is sectional drawing along the LL line of the clip of FIG. FIG. 25 is a cross-sectional view of the clip of FIG. 24 taken along line MM. It is a front view of the removal tool of a clip by an embodiment of the present invention. It is a bottom view of the removal tool of FIG. It is a front view of the state which set the removal tool of FIG. 26 to the clip. It is sectional drawing of the intermediate | middle stage which rotated the pin with the removal tool of FIG. It is sectional drawing of the step which rotated the pin about 75 degrees. It is sectional drawing of the direction orthogonal to FIG. FIG. 31 is a cross-sectional view of the stage where the pin is picked up with a finger and pulled up from the stage of FIG. It is sectional drawing along the NN line | wire of FIG. It is sectional drawing along the same line as the NN line | wire of the stage which pulled up the pin further from the step of FIG. 32, and rotated the pin about 90 degrees. It is sectional drawing along the same line as the NN line | wire of the state which removed the clip from the attachment member and the to-be-attached member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The clip 1 according to the embodiment of the present invention includes a synthetic resin grommet 30 shown in FIGS. 1 to 7 and a synthetic resin pin 10 shown in FIGS. The pin 10 and the grommet 30 are temporarily fixed and stored in the temporarily fitted state shown in FIGS. The clip 1 is used to attach attachment members such as interior parts and protective covers to attachment members such as automobile body panels. The fitting hole of the attachment member and the attachment hole of the member to be attached are aligned, the clip 1 in the temporarily fitted state is inserted into the attachment hole, the pin 10 is pushed into the grommet 30, and the fitting state shown in FIGS. To do.
The procedure for removing the clip 1 is shown in FIGS.

(Grommet)
The grommet 30 is demonstrated with reference to FIGS. FIG. 1 is a perspective view of a grommet 30 of a clip 1 according to an embodiment of the present invention. 2 is a top view, FIG. 3 is a front view, FIG. 4 is a bottom view, and FIG. 5 is a right side view. 6 is a cross-sectional view taken along the line AA of the grommet 30 in FIG. 2, and FIG. 7 is a cross-sectional view taken along the line BB in FIG.

As shown in FIGS. 1 and 3, the grommet 30 has a substantially cylindrical grommet flange 31 at the top and a grommet body 41 having a substantially square cross section extending downward from the center of the grommet flange 31. The central part of the grommet 30 is open so that the pin 10 can be inserted.
As shown in FIGS. 1 and 6, the grommet flange 31 is cylindrical, and the bottom of the grommet flange 31 is a substantially flat flange bottom portion 32. On the inner side of the grommet flange 31, a rotation-inhibiting rib 33 protruding in a convex shape is formed so as to extend in the vertical direction. Four rotation suppression ribs 33 are formed at intervals of 90 °. In the present specification, the vertical direction refers to the direction of the central axis of the pin 10 and the grommet 30.

  On the inner side of the grommet flange 31, a push-up slope 35 is formed from a position adjacent to the rotation suppression rib 33. The raising slope 35 gradually increases in height along the inner periphery of the grommet flange 31. The push-up slope 35 is formed in four places at intervals of 90 °. When the pin 10 is rotated after the pin 10 and the grommet 30 are fully fitted, when the pin 10 is rotated, the guide rib 12 of the pin 10 slides on the raised slope 35 of the grommet 30 and the pin 10 is pushed up. It is like that.

A small slope upper plane 37 is formed adjacent to the circumferential direction at the position where the push-up slope 35 is the highest.
An over-rotation preventing wall 34 extending in the vertical direction is formed adjacent to the slope upper plane 37. The over-rotation prevention wall 34 is adjacent to the next rotation suppression rib 33.
The rotation suppression rib 33, the push-up slope 35, the slope upper plane 37, and the over-rotation prevention wall 34 are arranged in this order, and are formed at four positions at intervals of 90 °.

  When the pin 10 is rotated after the pin 10 and the grommet 30 are finally fitted, when the pin 10 is rotated, one side surface of the guide rib 12 comes into contact with the over-rotation preventing wall 34 and the rotation of the pin 10 is stopped. Since the guide rib 12 of the pin 10 is on the slope upper plane 37, the pin 10 cannot be pushed in. Therefore, it is possible to prevent the pin 10 from being accidentally pushed and re-fitted during the removal of the clip 1.

  The central part of the flange bottom 32 of the grommet 30 is open. A pair of drop-off preventing claws 36 extends obliquely downward from the direction in which the flange bottom 32 faces each other toward the center of the opening. As shown in FIG. 2, the direction in which the pair of drop-off prevention claws 36 face each other coincides with the direction of the over-rotation prevention wall 34 and the adjacent rotation suppression rib 33.

Under the flange bottom 32 of the grommet 30, a grommet body 41 extends downward.
A pair of spread legs 42 is formed between the grommet body 41. As shown in FIG. 7, the distal end portions of the pair of expanded legs 42 are expanded leg distal end portions 43 that extend in directions toward each other. As shown in FIGS. 2 and 4, the pair of spread legs 42 oppose each other in the direction perpendicular to the direction in which the drop-off prevention claw 36 opposes. The spread leg 42 is separated from the grommet body 41 by a slit 44 extending in the vertical direction.

As shown in FIG. 4, the outer shapes of the cross sections of the grommet body 41 and the spreading legs 42 are substantially square. As shown in FIG. 5, there are no spread legs 42 in the direction in which the drop prevention claws 36 face each other, and no slit 43 is formed in the grommet body 41.
As shown in FIG. 4, the four corners of the grommet barrel 41 are thick.

(pin)
The pin 10 will be described with reference to FIGS. FIG. 8 is a perspective view of the pin 10 of the clip 1. 9 is a top view of the pin 10, FIG. 10 is a front view, FIG. 11 is a bottom view, and FIG. 12 is a right side view. FIG. 13 is a sectional view taken along the line CC of the pin 10 of FIG. 14 is a cross-sectional view taken along the line DD of the pin 10 of FIG. 10, and FIG. 15 is a cross-sectional view taken along the line EE.
The pin 10 includes an upper disk-shaped pin flange 11 and a pin shaft portion 21 extending below the pin flange 11.

The pin flange 11 has a substantially disk shape. A low cylindrical pin flange protrusion 13 is formed on the upper portion of the center portion of the pin flange 11. Between the pin flange protrusion 13 and the circumference, one release recess 14 having a substantially circular cross section is formed. The engagement between the grommet 30 and the pin 10 can be released using a dedicated removal tool that fits the pin flange protrusion 13 and the release recess 14.
In this embodiment, the pin 10 is removed using a dedicated removal tool. The method of removing the pin 10 is not limited to a method using a dedicated removal tool. A hexagonal protrusion can be formed and removed using a common tool such as a hexagon wrench.

Under the pin flange 11, four guide ribs 12 are provided at intervals of 90 °. The guide rib 12 has a cross shape in cross section. The guide rib 12 extends in a plate shape from the lower surface of the pin flange 11 in the longitudinal direction of the pin 10.
Concave outer portions 15 are formed on the lateral and lower sides of the release concave portion 14. A central portion of the four guide ribs 12 is a guide rib shaft portion 16.

When the pin 10 and the grommet 30 are temporarily fitted, the guide rib 12 of the pin 10 is located between the over-rotation prevention wall 34 and the rotation suppression rib 33 of the grommet 30.
When the pin 10 is rotated after the pin 10 and the grommet 30 are fully fitted, when the pin 10 is rotated, the guide rib 12 of the pin 10 slides on the raised slope 35 of the grommet 30 and the pin 10 is pushed up. It is like that.

  A pin shaft portion 20 extends under the pin flange 11 along the central axis. The pin shaft portion 20 includes a pin shaft upper portion 21, a pin shaft convex portion 22, a pin outer peripheral portion 23, a pin positioning groove 25, a drop prevention claw engagement shelf 26, a pin shaft lower portion 27, and a pin lower end cylindrical portion 28. . Four pin shaft convex portions 22 are formed on the outer periphery of the pin shaft upper portion 21 at intervals of 90 °. In this fitting state, the pin shaft convex portion 22 engages with the drop-off preventing claw 36 of the grommet 30 and holds the pin 10 so as not to come off.

  Around the lower side of the pin shaft upper portion 21, four pin outer peripheral portions 23 are provided at equal intervals. The outer diameter of the pin outer peripheral portion 23 is larger than the outer diameter of the pin shaft upper portion 21. The upper surface of the pin outer peripheral portion 23 is inclined so that one of the upper surfaces becomes higher along the circumferential direction, thereby forming a pin rotational force applying inclined surface 24. When the clip 1 is returned from the fully-fitted state to the temporarily-fitted state, the pin rotational force imparting inclined surface 24 contacts the drop-off preventing claw 36 and rotates the pin 10.

A pin positioning groove 25 extends downward between adjacent pin outer peripheral portions 23. Four pin positioning grooves 25 are formed at intervals of 90 °. As shown in FIGS. 10 and 12, the angular position of the pin positioning groove 25 in the circumferential direction is the same as the angular position of the guide rib 12 in the circumferential direction.
In the temporary fitting state, the drop-off preventing claw 36 of the grommet 30 enters the pin positioning groove 25 of the pin 10, and the pin 10 and the grommet 30 are regulated so as not to rotate with each other.

  In the pin positioning groove 25, a drop-off preventing claw engaging shelf 26 having a horizontal surface extending circumferentially is formed. The lower portion of the pin 10 detachment prevention claw engaging shelf 26 becomes thicker as it goes upward. In the temporarily fitted state, the pair of drop-off prevention claws 36 of the grommet 30 are engaged with the drop-off prevention claw engagement shelf 26 of the pin 10 so that the pin 10 is not detached from the grommet 30.

A pin shaft lower portion 27 is formed below the pin outer peripheral portion 23 from the lower portion of the pin positioning groove 25. The cross section of the pin shaft lower portion 27 is substantially square, and each side is gently curved.
In this fitting state, the tip portions 43 of the pair of expanding legs of the grommet 30 are engaged with the pin shaft lower portion 27, and the expanding legs 42 are expanded and held so that the attachment members are not detached. Since the pin shaft lower portion 27 has a substantially square cross section, the distal end portion 43 of the spread leg stably abuts.

Below the pin shaft lower portion 27 is a cylindrical pin lower end cylindrical portion 28 that is thinner than the pin shaft lower portion 27. In the temporarily fitted state, the pair of expanding leg tip portions 43 of the grommet 30 engage with the lower side of the pin lower end cylindrical portion 28 and hold the pin 10 so that it cannot be pushed in with a weak force.
A pin center hole 29 is formed at the center of the pin shaft upper portion 21, the pin shaft lower portion 27, and the pin lower end cylindrical portion 28. The pin center hole 29 is closed at the top and is not a through hole.

(Temporary mating state)
In general, the clip 1 is stored in a state where the grommet 30 and the pin 10 are assembled and temporarily fitted, and delivered to an assembly department. FIG. 16 is a top view of the clip 1 in a state where the grommet 30 and the pin 10 are temporarily fitted. 17 is a front view, FIG. 18 is a cross-sectional view taken along the line FF of the clip 1 of FIG. 16, and FIG. 19 is a cross-sectional view taken along the line GG. 20 is a cross-sectional view taken along the line HH of the clip 1 of FIG. 18, and FIG. 21 is a cross-sectional view taken along the line JJ.

  In order to temporarily fit the pin 10 and the grommet 30, as shown in FIG. 21, the direction of the pin 10 and the grommet 30 is set so that the drop-out preventing claw 36 of the grommet 30 enters the pin positioning groove 25 of the pin 10. Match. The pin 10 is inserted from the grommet flange 31 side of the grommet 30 into the opening at the center with the pin lower end cylindrical portion 28 of the pin 10 at the head.

The lower portion of the pin 10 detachment prevention claw engaging shelf 26 becomes thicker as it goes upward. As the pin 10 is inserted, the lower part of the drop prevention claw engaging shelf 26 pushes and spreads the drop prevention claw 36 of the grommet 30. As shown in FIG. 18, when the drop prevention claw engagement shelf 26 comes out below the drop prevention claw 36, the drop prevention claw engagement shelf 26 and the drop prevention claw 36 of the grommet 30 are engaged, and the pin 10 It is prevented from coming off.
There is also a convex portion above the drop-off prevention claw engagement shelf 26, and the pin 10 is held at a position in contact with the drop-off prevention claw engagement shelf 26.

  In the temporarily fitted state, the drop-out preventing claw 36 of the grommet 30 enters the pin positioning groove 25 of the pin 10, and the pin 10 and the grommet 30 are regulated so as not to rotate with each other.

As shown in FIG. 19, in the temporarily fitted state, the pair of expanded leg tip portions 43 of the grommet 30 are engaged with and held on the lower side of the pin lower end cylindrical portion 28. Therefore, unless the pin 10 is pushed with a strong force, the pin 10 is not pushed in and is stopped.
As shown in FIG. 20, the guide rib 12 of the pin 10 is positioned so as to enter between the over-rotation prevention wall 34 and the rotation suppression rib 33 of the grommet 30. This state is a temporary fitting state.

(Fully mated state)
FIG. 22 is a top view of the clip 1 in a state where the grommet 30 and the pin 10 are fully fitted. FIG. 23 is a cross-sectional view of the clip 1 of FIG. 22 taken along the line KK, and FIG. 24 is a cross-sectional view taken along the line LL. FIG. 25 is a cross-sectional view of the clip 1 in FIG. 24 taken along line MM.

  In order to fully fit the clip 1, the position of the mounting hole 53 of the mounting member 51 and the mounting hole 54 of the mounted member 52 such as a body panel are aligned, and the grommet body of the grommet 30 of the clip 1 in the temporarily fitted state The portion 41 and the pin lower end cylindrical portion 28 of the pin 10 are inserted so as to enter the mounting holes 53 and 54. The flange bottom 32 of the grommet 30 is brought into contact with the surface around the mounting hole 53 of the mounting member 51.

  Next, the pin 10 is pushed downward against the grommet 30. The pin lower end cylindrical portion 28 of the pin 10 pushes the spread leg tip end portion 43 of the grommet 30 and moves downward. The pair of extended leg tip portions 43 abut on the pin shaft lower portion 27. Since the pin shaft lower portion 27 is thicker than the pin lower end cylindrical portion 28, the spread leg tip portion 43 is pushed and widened by the pin shaft lower portion 27, and the distance between the pair of spread legs 42 is widened. Since the pin shaft lower portion 27 has a substantially square cross section, the distal end portion 43 of the spread leg stably abuts.

The guide rib 12 of the pin 10 enters between the over-rotation prevention wall 34 of the grommet 30 and the rotation suppression rib 33. When the lower surface of the guide rib 12 contacts the flange bottom 32 of the grommet 30, the movement of the pin 10 stops.
As shown in FIG. 23, when the pin shaft convex portion 22 of the pin 10 pushes and spreads the drop preventing claw 36 of the grommet 30 and comes to the lower side, the pin shaft convex portion 22 engages with the drop preventing claw 36. The pin 10 is prevented from coming off.
In this fitting state, the dropout prevention claw 36 of the grommet 30 comes out above the pin positioning groove 25 of the pin 10 and abuts around the pin shaft upper portion 21.

As shown in FIG. 24, the attachment member 51 and the attachment member 52 are attached between the flange bottom portion 32 of the grommet 30 and the expanded leg 42 having an enlarged diameter.
FIG. 25 is a cross-sectional view of the clip 1 of FIG. 24 taken along the line MM, and it can be seen that the expanding leg 42 has an increased diameter.

  In the embodiment of the present invention, in a state where the pin 10 and the grommet 30 are temporarily fitted, the pin 10 and the grommet 30 are finally fitted by being attached to the mounting holes 53 and 54 of the mounting member 51 and the mounted member 52. Explained the method. In addition to this, the pin 10 and the grommet 30 are temporarily attached to the mounting member 51, and the mounting member 51 and the mounted member 52 are overlapped, and the pin 10 and the grommet 30 are finally fitted. You can also Further, without temporarily fitting the pin 10 and the grommet 30, the grommet 30 is attached to the attachment member 52, the pin 10 is attached to the attachment member 51, and then the pin 10 is inserted into the opening of the grommet 30, It is also possible to attach the mounting member 51 to the mounted member 52 by fully fitting the pin 10 and the grommet 30.

(Removal tool)
FIG. 26 is a front view of the clip 1 removal tool 60 according to the embodiment of the present invention, and FIG. 27 is a bottom view thereof. The removal tool 60 has an appearance like a drag bar as a whole. The removal tool 60 has a grip portion, a shaft portion adjacent to the grip portion, and a tip portion 61 adjacent to the shaft portion. The tip 61 is formed with a tool recess 62 adapted to the pin flange protrusion 13 and a tool projection 63 adapted to the release recess 14 at the center.
The pin flange protrusion 13 enters the tool recess 62 of the removal tool 60, and the tip 61 of the removal tool 60 contacts the pin flange 11 so that the tool protrusion 63 enters the release recess 14, and the tool is rotated manually. Then, the pin 10 rotates and the pin 10 can be removed.

  As described above, instead of the pin flange protrusion 13 and the release recess 14, a pin 10 is provided with a hexagonal protrusion or recess, and a general tool such as a hexagon wrench can be used without using the dedicated removal tool 60. It can also be used to remove the pin 10.

(Removing the clip)
A method of removing the pin 10 and the grommet 30 after the pin 10 of the clip 1 and the grommet 30 are finally fitted and the attachment member 51 is attached to the attached member 52 will be described with reference to FIGS.

  FIG. 28 is a front view of a state in which the removal tool 60 is set on the clip 1 in the main fitting state shown in FIGS. The pin 10 can be removed from the grommet 30 by rotating the pin 10 using the removal tool 60.

  FIG. 29 is a cross-sectional view of an intermediate stage in which the pin 10 is rotated in the range of 0 ° to 75 ° by the removal tool 60. When the pin 10 of the clip 1 in the fully fitted state is rotated, the guide rib 12 is changed from the state in which the guide rib 12 of the pin 10 is interposed between the over-rotation prevention wall 34 of the grommet 30 and the rotation suppression rib 33. The outer peripheral portion of the motor passes over the rotation suppression rib 33 and comes off with a click feeling.

Since the distal end portion 43 of the expanding leg of the grommet 30 is in contact with the pin shaft lower portion 27 whose section of the pin 10 is substantially square, the expanding leg 42 is further opened at the position where the pin 10 is rotated by 45 °.
The lower surface of the guide rib 12 slides on the pin push-up slope 35 and is gradually pushed up. The pin shaft convex portion 22 rotates and comes to a position where the pin shaft convex portion 22 does not engage with the drop-off preventing claw 36 of the grommet 30 and goes to the upper part thereof.

  30 is a cross-sectional view of the stage in which the pin 10 is rotated about 75 ° from the state in which the clip 1 is fitted, and FIG. 31 is a cross-sectional view in a direction orthogonal to FIG. At this stage, the guide rib 12 of the pin 10 is pushed up to the top of the pin pulling slope 34 and is on the slope upper plane 37. One side surface of the guide rib 12 abuts against the over-rotation preventing wall 34, and the rotation of the pin 10 is stopped. At this stage, the removal tool 60 is removed. Since the guide rib 12 of the pin 10 is on the slope upper plane 37, the pin 10 cannot be pushed in. Therefore, it is possible to prevent the pin 10 from being accidentally pushed and re-fitted during the removal of the clip 1.

As shown in FIG. 31, the spread leg tip 43 of the spread leg 42 of the grommet 30 moves from the pin shaft lower portion 27 of the pin 10 and contacts the outer periphery of the pin lower end cylindrical portion 28. The spread leg 42 is slightly closed but remains wide. The pin lower end cylindrical portion 28 has a circular cross section, and the spread leg tip end portion 43 easily slides on the outer periphery of the pin lower end cylindrical portion 28, so that the pin 10 can be rotated.
At this stage, there is a gap between the pin flange 11 and the grommet flange 31, and the pin flange 11 can be picked with a finger.

FIG. 32 is a cross-sectional view of the stage where the pin 10 is picked up by a finger and pulled up from the stage of FIG. 30 and the pin 10 is rotated about 75 to 90 degrees. 33 is a cross-sectional view taken along line NN in FIG. As shown in FIG. 32, the lower surface of the guide rib 12 of the pin 10 rises from the slope upper plane 37 and is slightly lower than the upper surface of the grommet flange 31.
When the pin 10 is pulled up, the pin rotational force applying slope 24 of the pin 10 comes into contact with the drop-off preventing claw 36 of the grommet 30, and the pin 10 is further rotated.

The lower surface of the guide rib 12 of the pin 10 is higher than the top of the over-rotation prevention wall 34. Therefore, the guide rib 12 can be positioned between the excessive rotation prevention wall 34 and the adjacent rotation suppression rib 33 beyond the excessive rotation prevention wall 34.
The drop prevention claw 36 enters the pin positioning groove 25.

FIG. 34 is a cross-sectional view at the same position as the NN line at the stage where the pin 10 is further lifted from the stage of FIG. 32 and the pin is rotated about 90 °. The lower surface of the guide rib 12 of the pin 10 is substantially at the same height as the upper end of the grommet flange 31.
The drop-out preventing claw 36 of the grommet 30 does not contact the pin outer peripheral portion 23 having a large outer diameter, and enters the pin positioning groove 25 of the pin 10. Therefore, the pin 10 can be further pulled up.

The drop-off preventing claw 36 was in the pin positioning groove 25 in the temporarily fitted state before being attached. At the stage of removal shown in FIG. 34, one drop-off preventing claw 36 enters the adjacent pin positioning groove 25 that is shifted by 90 ° from the initial temporarily fitted state. There is still a gap between the drop-off prevention claw 36 and the drop-off prevention claw engaging shelf 26.
The spread leg tip 43 at the tip of the spread leg 42 is engaged with the lower end of the pin lower end cylindrical part 28. Therefore, the expanding leg 42 is expanded, and the mounting member 51 and the mounted member 52 are fixed. When the pin 10 moves a little more upward, the spread leg 42 is not spread.

  FIG. 35 is a cross-sectional view at the same position as the line NN in a state where the pin is further pulled up from the stage of FIG. 34 and the clip 1 is removed from the mounting holes 53 and 54 of the mounting member 51 and the mounted member 52. When the pin 10 is further pulled up from the stage of FIG. 34, the drop-off prevention claw 36 of the grommet 30 gets over the convex portion on the drop-off prevention claw engagement shelf 26 of the pin 10 and abuts on the drop-off prevention claw engagement shelf 26. , Pin 10 can no longer be pulled up.

The spread leg tip 43 of the spread leg 42 comes off from the outer peripheral part of the pin lower end cylindrical part 28 and moves below the pin lower end cylindrical part 28, and there is a click feeling at this time. The expanded leg 42 returns to the state where it is not expanded. Therefore, the clip 1 can be removed from the mounting holes 53 and 54 of the mounting member 51 and the mounted member 52.
The lower end portion of the pin lower end cylindrical portion 28 is held by the expanding leg tip portion 43 of the expanding leg 42. Unless the pin 10 is pushed with a strong force, the pin 10 is not pushed in. Thus, the pin 10 is shifted by 90 ° from the initial temporarily fitted state and returned to the temporarily fitted state.
The clip 1 in the temporarily fitted state in FIG. 35 can be reused.

According to the embodiment of the present invention, it is possible to prevent excessive rotation of the pin when removing a clip having an attachment member such as an interior part or a protective cover attached to a member to be attached such as an automobile panel. It is possible to prevent the pin from being pushed in again.
In addition, the clip of the embodiment of the present invention can be reliably reused.

1 clip
10 pin
11 pin flange
12 Guide rib
13 Pin flange protrusion
14 Recessed recess
15 Outside of recess
16 Guide rib shaft
20 Pin shaft
21 Pin shaft upper part
22 Pin shaft protrusion
23 Pin outer periphery
Slope with 24-pin rotational force
25 pin positioning groove
26 Shelf engagement shelf
27 Pin shaft lower part
28 pin bottom cylindrical part
29 pin center hole
30 Grommet
31 Grommet flange
32 Flange bottom
33 Anti-rotation rib
34 Over-rotation prevention wall
35 Push-up slope
36 Captive claw
37 Slope upper plane
41 Grommet body
42 Spread legs
43 Extension leg tip
44 Slit
51 Mounting member
52 Mounted member
53 Mounting hole
54 Mounting hole
60 Removal tool
61 Tip
62 Shaft
63 Engagement part
64 Tool recess
65 Tool convex

Claims (12)

A clip comprising a pin and a grommet having an opening for inserting the pin for attaching the attachment member to the attached member,
The pin is a disk-shaped pin flange,
A plurality of guide ribs formed on the lower surface of the pin flange;
A pin shaft portion extending below the guide rib,
The grommet includes a cylindrical grommet flange,
A plurality of raised slopes for raising the lower surface of the guide rib, the height gradually increasing along the circumferential direction inside the grommet flange;
A plurality of sloped upper surfaces adjacent to the raised slope and having a flat upper surface for contacting the lower surface of the guide rib;
A plurality of over-rotation preventing walls extending in a longitudinal direction adjacent to the upper surface of the slope and abutting against a side surface of the guide rib;
Have a, a pair of fall preventing pawl extending obliquely downward from the lower surface of the grommet flange,
A pin positioning groove extending in the vertical direction is formed in the pin shaft portion,
In the temporary fitting state, the dropout prevention claw of the grommet enters the pin positioning groove, and the pin is regulated so as not to rotate with respect to the grommet.
A clip characterized by that.   2. The clip according to claim 1, wherein the clip has a plurality of rotation suppression ribs adjacent to the raised slope and extending in a longitudinal direction to engage with an outer periphery of the guide rib. The clip according to claim 2,
The number of the said rotation suppression rib of the said grommet, the said raising slope, the said slope upper plane, and the said over-rotation prevention wall are four each. The clip according to claim 1, wherein
The grommet includes a grommet body formed below the grommet flange,
A pair of spread legs formed by opening a slit between the grommet barrels,
A clip characterized by that. The clip according to any one of claims 1 to 4, wherein the pin shaft portion of the pin includes an upper portion of a cylindrical pin shaft;
A plurality of pin outer peripheral portions formed on the lower outer periphery of the upper portion of the pin shaft, having a larger diameter than the upper portion of the pin shaft, and an upper surface being an inclined surface;
Said pin positioning groove between the pin outer peripheral portion,
A pin shaft lower part formed on the lower side of the outer peripheral part of the pin;
A clip formed on a lower side of the lower portion of the pin shaft and having a cylindrical pin lower end cylindrical portion having a smaller diameter than the lower portion of the pin shaft. The clip according to claim 5,
A clip in which a drop prevention claw engaging shelf for engaging the drop prevention claw of the grommet is formed in the pin positioning groove of the pin. The clip according to claim 6 ,
In the temporarily fitted state, the drop-off prevention claw engagement shelf and the drop-off prevention claw of the grommet are engaged, and the pin is prevented from being detached,
The clip which hold | maintains the front-end | tip part of a pair of said expansion leg of the said grommet so that the said pin may not be pushed in accidentally engaging the lower side of the said pin lower end cylindrical part. The clip according to any one of claims 4 to 7 ,
In this fitting state, the outer peripheral portion of the guide rib of the pin is locked between the over-rotation prevention wall of the grommet and the rotation suppression rib,
The distal end portion of the spread leg is spread by the lower portion of the pin shaft, and the distance between the pair of spread legs is widened.
A clip in which a pin shaft convex portion formed on an upper portion of the pin shaft engages with the drop-out preventing claw and the pin is prevented from coming off. The clip according to claim 8 , wherein
When the pin is rotated in the fully fitted state, the guide rib of the pin is disengaged from the engagement between the rotation suppression rib and the over-rotation prevention wall, and along the push-up slope of the grommet. Pushed up,
The guide rib is a clip that stops abutting against the over-rotation preventing wall on the upper surface of the slope. The clip according to claim 9 ,
When the pin that is in contact with the over-rotation prevention wall is pulled up, the lower surface of the drop-out prevention claw comes into contact with the inclined surface of the pin outer peripheral portion, and the pin rotates,
The drop-off prevention claw of the grommet enters the pin positioning groove of the pin, engages with the drop-off prevention claw engagement shelf,
The clip which the front-end | tip part of a pair of said expansion leg of the said grommet engages under the said pin lower end cylindrical part, and returns to the said temporary fitting state. A clip comprising a pin and a grommet having an opening for inserting the pin for attaching the attachment member to the attached member,
The pin is a disk-shaped pin flange,
A plurality of guide ribs formed on the lower surface of the pin flange;
A pin shaft portion extending below the guide rib,
The grommet includes a cylindrical grommet flange,
A pair of drop-off prevention claws extending obliquely downward from the lower surface of the grommet flange;
A grommet trunk formed below the grommet flange;
Have a, a pair of widening legs which are formed at the slit between the grommet body portion,
Wherein the pin shank pin positioning groove extending in the longitudinal direction are formed, the falling-off prevention claws of the grommet enters the pin positioning groove, the pin is a Rukoto is regulated so as not to rotate relative to the grommet A featured clip. A clip according to claim 1 1,
The grommet is formed inside the grommet flange, and includes a plurality of rotation suppression ribs extending in the vertical direction, and a plurality of over-rotation preventing walls extending in the vertical direction.
The outer periphery of the guide rib of the pin is a clip that is locked between the rotation suppression rib of the grommet and the over-rotation prevention wall.

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