JP2000318657A - Clip for fixing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip removed from a fixing object only in the case where a speed of force for removing a fixed member from the fixing object is very high, when the force is applied. SOLUTION: In this clip 24 comprising a clip body 26 attachable to a fixed member 14, and a locking part 28 formed integrally with the clip body 26 and fitted into a through hole 18 of a fixing object 10 to fix the fixed member 14 to the object 10, the locking part 28 is composed of the first locking stepped part 30 formed in the vicinity of the clip body 26 and locked to a periphery of the through hole 18 when the clip 24 is fixed to the fixing object 10 to prevent comming-off, and the second locking stepped part 32 formed in a front side of the first locking stepped part 30, prevented from comming off in the periphery of the through hole 18 in the case where a speed of force applied to the clip 24 is slow when the force is applied to the clip 24 to make the first locking stepped part 30 come off from the through hole 18, and allowed to make the clip 24 come off from the fixing object 10 by passing the through hole 18 instantaneously when the speed is very high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip for fixing a required fixed member to an object to be fixed, and more particularly, to a clip when a force for removing the fixed member from the object to be fixed is applied. The present invention relates to a member fixing clip that allows the fixed member to be detached from a fixing target only when the speed accompanying the force is extremely large.

[0002]

2. Description of the Related Art As shown in FIG. 5, for example, in an airbag apparatus mounted on a pillar 10 of a passenger car, the pillar 1
The airbag 12 provided at 0 is covered with a decorative trim 14 and covered. This airbag device
The operation of a collision sensing device (not shown) sends high-pressure gas from the gas container 15 to the airbag 12 at once, and instantaneously inflates the bag 12 to ensure the safety of the occupant during a collision. Therefore, the trim 14 is required to be easily detached from the pillar 10 by a force applied from the inside when the airbag 12 is inflated, and to allow the bag 12 to inflate into the vehicle.

To attach the trim 14 to the pillar 10, as shown in FIG. 6, a clip 16 is fixed to the back side of the trim 14, and the tip of the clip 16 is pierced into the pillar 10 as shown in FIG. This is performed by fitting into the through hole 18. That is, in FIG. 6, a projecting seat portion 20 is integrally formed at a predetermined position on the back side of the trim 14, and the projecting seat portion 20 is provided with an indented portion 20a. As shown in FIG. 8, in particular, the clip 16 has an annular groove 16a formed at a lower base thereof to allow insertion into the indented portion 20a, and fits into the through hole 18 above the annular groove 16a. An annular groove 16b is formed, and the upper opening is formed in a sharp dome shape. Therefore, as shown in FIGS. 6 and 8, the clip 16 is fixed to the trim 14 by inserting the annular groove 16a of the clip 16 into the recess 20a of the protruding seat 20 from the side.

[0004] As shown in FIG. 7, the trim 14 is applied to the pillar 10, and the dome-shaped tip of the clip 16 is forcibly pressed into the through hole 18 of the pillar 10, as shown in FIG. 8. Sixteen annular grooves 16b are fitted into the through holes 18, so that the mounting of the trim 14 to the pillar 10 is achieved. In the state shown in FIG. 8, when the airbag 12 is inflated at a high speed due to a collision of a passenger car or the like, a large force acts on the trim 14 from the inside.
For this reason, as shown in FIG.
The annular groove 16b of the clip 16 attached to the pillar 10 comes out of the through hole 18 of the pillar 10, and the trim 14
The airbag 12 is allowed to greatly inflate out of zero. 8 and 9, reference numeral 22 denotes a windshield of a passenger car.

[0005]

As described with reference to FIG. 9, the airbag device is activated to operate the airbag 12 in the trim 14.
When the swells, the clip 16 for fixing the trim 14 to the pillar 10 should come off from the through hole 18, but if the clip 16 has a large resistance to the through hole 18, the removal becomes poor. If the clip 16 is not properly pulled out, the trim 14 hinders the effective and stable deployment of the airbag 12, and the protruding seat 20 formed on the back side of the trim 14 is broken. There are difficulties such as. On the other hand, if the fixing strength of the clip 16 to the through hole 18 is reduced, the clip 14 is easily removed from the through hole 18 and the trim 14 is easily detached from the pillar 10 during normal use. The drawback that causes a great hindrance is pointed out.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in order to suitably solve the above-mentioned problem, and a force for detaching a fixed member such as the trim from an object to be fixed such as the pillar is difficult. It is an object of the present invention to provide a member fixing clip that detaches the member to be fixed from an object to be fixed only when the speed accompanying the force when applied is extremely large.

[0007]

SUMMARY OF THE INVENTION In order to overcome the above problems and achieve the intended object, the present invention provides a clip body detachably attachable to a member to be fixed, and a clip body integrally formed with the clip body to secure the clip body. A clip for fixing the member to be fixed to the object to be fixed, which is forcibly fitted into the through hole of the object, the member being formed near the clip main body. A first locking step for locking the clip to the peripheral edge of the through-hole when the clip is completely fixed to an object to be fixed, and a first locking step provided on a front side of the first locking step; When a force is applied to the clip and the first locking step portion comes out of the through hole, if the speed accompanying the force is low, the clip is locked to the peripheral edge of the through hole. When the speed is extremely high, the through hole is momentarily stopped. Wherein for a fixed object, characterized by being configured of the second engaging stepped portion to allow the said clips are released through the. In this case, the locking portion is formed with a split groove which is opened forward from the portion of the clip body, and the split groove is formed by the first locking step portion and the second locking step portion.
The first and second locking steps can be inserted into and removed from the through holes by allowing the inward bending of the locking steps.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a member fixing clip according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. 7 to 9, the same or equivalent members as those already described are designated by the same reference numerals. In the illustrated embodiment, the object to be fixed by the member fixing clip is a pillar of a vehicle, and the member to be fixed to the object to be fixed is a trim as a decorative material covered by the pillar. Of course, the application field is not limited to this.

FIG. 1 is a perspective view of a member fixing clip 24 according to a preferred embodiment, and FIG. 2 is a cross-sectional view showing the clip 24 inserted and locked in a through hole 18 of the pillar 10. . In the figure, a member fixing clip 24 includes a clip main body 26 detachably attached to the trim 14,
The clip body 26 basically comprises a locking portion 28 integrally formed with the clip body 26 and extending forward. The locking portion 28 is provided in the through hole 18 of the pillar 10 in a vehicle (not shown).
To perform a function of fixing the trim 14 to the pillar 10. The clip 24 is made of a synthetic resin material having some flexibility as a whole or a hard synthetic rubber material.

The clip body 26 has a disk shape as shown in FIG. 1, and an annular groove 26a is provided in a lower base portion thereof. The annular groove 26a allows the forcible insertion of the protruding seat portion 20 formed on the back surface of the trim 24 into the indented portion 20a in the same manner as the conventional example described with reference to FIG. It is to be fixed to the trim 14. In FIGS. 1 and 2, the dish-shaped piece 26b integrally formed on the upper portion of the clip main body 26 performs a function of fixed positioning when the clip 24 is attached to the pillar 10, but is an essential component of the present invention. Not a member.

As shown in FIGS. 1 and 2, the locking portion 28 has a first portion formed near the clip body 26. As shown in FIG.
And a second locking step 32 formed forward of the locking step 30. That is, the first locking step portion 30 is formed at a transition portion from the clip body 26 to the locking portion 28, and when the clip 24 is completely fixed to the pillar 10 as shown in FIG. The stopper 18 is locked to the periphery of the stopper 18 to prevent it from falling off. The second locking step 32 is formed on the front side of the first locking step 30. As will be described later, even if a force is applied to the clip 24 and the first locking step 30 comes out of the through hole 18, the speed at which the second locking step 32 accompanies the force is low. In this case, the clip 24 is prevented from slipping off by being hooked on the peripheral edge of the through hole 18. In addition, when the speed accompanying the force is extremely high, the clip 24 is instantly passed without time to catch on the peripheral edge of the through hole 18. By doing so, a function of allowing the clip 24 to come off from the pillar 10 is achieved.

More specifically, the locking portion 28 described above
As can be seen from FIG. 1, a pair of clips 2 that sandwich a split groove 34 that is open from the portion of the clip main body 26 toward the front side 2
It consists of two tongue-shaped pieces 28a, 28b. The first locking step 30 and the second locking step 32 are provided with a tongue-shaped split piece 28a.
Each of (28b) is formed so as to protrude outward. The split groove 34 allows the first locking step portion 30 and the second locking step portion 32 to bend inward by receiving the respective forces, whereby the first and second locking step portions 30 and 32 are bent. The insertion and withdrawal of the locking step portions 30 and 32 into and from the through hole 18 are enabled.

The size of the size of the first locking step 30 and the second locking step 32 protruding from the line with respect to the dividing groove 34 does not constitute a requirement of the present invention. But,
As a general design matter, there is a preferable recommended value, which will be described. That is, in the locking portion 28 of FIG. 2, a groove 28c is formed between the first locking step 30 and the second locking step 32. The width dimension of the groove 28c is denoted by e, and the distance between the bottoms of the grooves 28c, 28c formed on one tongue-shaped split piece 28a and the other tongue-shaped split piece 28b is denoted by k.
Further, the thickness of the pillar 10 is f, and the inside diameter of the through hole 18 of the pillar 10 is x. When the required dimensions a, b, c, d, and g are given as shown in FIG. 2, it is preferable that the relationship between the dimensions is as follows. a ≦ b, a ′ ≦ b ′, a ≦ c, a ′ ≦ c ′ a + a ′ + d> x, b + b ′ <x, c + c ′ <x e> f, g <x, x> k

Next, the member fixing clip 24 according to the embodiment will be described.
The actual use will be described with reference to FIGS. 3 and 4 over time, taking as an example a case where a force is applied to the trim 14 fixed by the clip 24 in a direction to remove the trim. 3 (1) and FIG. 4 (1) show that the trim 14 is fixed to the pillar 10 by the clip 24 according to the embodiment.
Shows a normal state which is fixed to. That is, similarly to the conventional example, the projecting seat portion 20 protruding from the rear side of the trim 14 is provided with a recess 20a, and the annular groove 26a of the clip body 26 is forcibly inserted into the recess 20a. The clip 24 is fixed to the trim 14. When the engaging portion 28 of the clip 24 is pressed against the through hole 18 of the pillar 10 and inserted, the first engaging step 30 is engaged with the through hole 18 as shown in FIG. Leads to. As a result, the trim 14 is securely mounted on the pillar via the clip 24, and the trim 14 does not come off the pillar 10 in a normal mounting state.

(In the case where the speed accompanying the force applied to the trim is low) Under the condition that the airbag device is not operated, as in the case where the occupant strongly touches the trim 14 shown in FIG. It is assumed that a force has been applied in a direction to remove the trim 14 from the pillar 10. At this time, it is difficult to easily remove the trim 14 from the pillar 10, but the clip 24 according to the embodiment is prevented from being removed by the second locking step 32. That is, the trim 14 is connected to the pillar 10
As shown in FIG. 3 (2), the first locking steps 30, 30 provided on the locking portion 28 bend inward in the presence of the split groove 34, as shown in FIG. This allows the pillar 10 to escape from the through hole 18. However, since the force acting on the trim 14 is not generally accompanied by a large speed, the first locking steps 30, 30 which have been bent inward once.
Immediately after exiting from the through hole 18, the clip 24
Will return to its original form immediately due to its inherent elasticity. For this reason, as shown in FIG. 3C, the second locking step portions 32 are hooked in the through holes 18 of the pillar 10, and the trim 14 does not come off the pillar 10 beforehand. Is prevented.

(In the case where the speed accompanying the force applied to the trim is extremely high) In the example shown in FIG. 3, the speed accompanying the force for removing the trim 14 is low. On the contrary, when the speed accompanying the force is extremely high, as in the case described above, the trim 14 must be easily detached from the pillar 10. The clip 24 according to the embodiment responds to this request as shown in FIG. Suppose now that the vehicle has had a collision and the airbag device has been activated. In this case, airbag 1
2 is inflated at once in a very short time, and therefore, a large force acts on the trim 14 covering the pillar 10 containing the airbag 12 from the inside of the trim 14. This force is accompanied by a very high speed due to the instantaneous inflation of the airbag 12.

FIG. 4 shows the force acting on the trim 14.
As shown in (1) and (2) of FIG. 3, up to the point where the first locking step 30 of the clip 24 comes off from the through hole 18 of the pillar 10, the description has been made with reference to (1) and (2) of FIG. It is exactly the same. However, since the force is accompanied by an extremely high speed as described above, after the first locking step 30 has exited the through hole 18, another second locking step 32 is required.
The second locking step 32
Is instantaneously passed without having time to catch on the periphery of the through hole 18. That is, as shown in (3) and (4) of FIG. 4, since the first and second locking steps 30, 32 all pass through the through hole 18 instantaneously, the clip 24 is 10 so that the trim 14 is
Smooth inflation of the airbag 12 deviating from zero will be allowed.

[0018]

As described above, according to the member fixing clip of the present invention, the following advantageous effects can be obtained. (1) When a force to remove a fixed member such as a trim from a fixed object such as a pillar is applied, only when the speed accompanying the force is extremely large, the fixed member is fixed to the fixed object. Out of the way. Accordingly, when the member fixing clip of the present invention is used, for example, for fixing a pillar containing an airbag and a trim covering the pillar, the clip can be deployed smoothly without hindering the inflation of the airbag. (2) Also, since excessive force is not applied to the projecting seat portion of the trim to which the clip is attached when the airbag is inflated, breakage of the projecting seat portion is effectively prevented.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a member fixing clip according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state where the member fixing clip according to the embodiment is inserted and locked in a through hole of a pillar.

FIG. 3 is a schematic view showing the actual use of the member fixing clip according to the embodiment, wherein (1) to (3) are relatively slow in applying a force in a direction to release the trim; The progress of preventing the pillar from being detached by being locked by the second locking step is shown with time.

FIG. 4 is a schematic view showing the actual use of the member fixing clip according to the embodiment, wherein (1) to (4) show a very high force application speed in the direction of releasing the trim, and In addition, the progression in which the locking at the second locking step is not performed and the pillar is detached from the pillar is shown over time.

FIG. 5 is a schematic explanatory view of an airbag provided on a pillar of a passenger car.

FIG. 6 is an explanatory perspective view showing that a clip is attached to a projecting seat formed on the back side of the trim, and a tip of the clip is fitted into a through hole of a pillar.

FIG. 7 is an explanatory diagram showing a state immediately before a trim is mounted on a pillar.

FIG. 8 is a cross-sectional view showing a state in which the trim is fixed to the pillar by fitting a clip attached to a projecting seat portion of the trim into a through hole of the pillar.

FIG. 9 is a cross-sectional view showing a state in which a clip comes out of a through hole of a pillar and a trim comes off from the pillar when the airbag is operated, and inflation of the airbag is allowed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fixation object (pillar) 12 Airbag 14 Member to be fixed (trim) 18 Through-hole 24 Member fixing clip 26 Clip body 28 Locking part 30 First locking step 32 Second locking step 34 groove

Continuing from the front page (72) Inventor Tomokazu Kurume 3-136 Imaikecho, Anjo-shi, Aichi Prefecture Inoac Corporation Anjo Office (72) Inventor Hiroyuki Kumazaki 3-1-136 Imaikecho, Anjo-shi Aichi Prefecture Shares 3D054 AA02 AA06 AA18 BB21 BB24 BB30 EE14 EE20 EE25 FF17 3J001 AA02 CA01 DC04 EA00 3J022 DA02 DA30 EA03 EB02 FA05 HB06

Claims (3)

[Claims] 1. A clip body (26) detachably attachable to a member to be fixed (14), and formed integrally with the clip body (26) and forced into a through hole (18) of an object (10) to be fixed. A locking portion that is fitted and fixes the fixed member (14) to the fixed object (10).
(28), the locking portion (28) is formed in the vicinity of the clip body (26), and the clip (24) is fixed to the object (10). A first locking step (30) that locks to the periphery of the through hole (18) to prevent it from falling off when completely fixed to the first locking step (3).
0) and is attached to the force when a force is applied to the clip (24) and the first locking step (30) comes out of the through hole (18). When the speed is low, it is locked to the periphery of the through hole (18) to prevent it from falling off, and when the speed is extremely high, it passes through the through hole (18) instantly and the fixed object (10) And a second locking step (32) for allowing the clip (24) to come off from the member. 2. The clip body (2) is attached to the locking portion (28).
A split groove (34) that opens forward from the part 6) is formed. The split groove (34) is formed by the first locking step (30) and the second locking step (30).
To allow the inward bending of the locking step (32),
2. The member fixing clip according to claim 1, wherein said second locking step (30, 32) can be inserted into and removed from said through hole (18). 3. The fixed member is a trim (14), and the fixed object is a pillar (10) of a vehicle, wherein the trim is
The member fixing clip according to claim 1, wherein (14) is a decorative material for covering and covering the airbag (12) provided in the pillar (10).