JP2756753B2 - High holding force clip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high holding force clip used for a part requiring a high holding force for mounting parts such as pipes and wiring fixed to a vehicle body of an automobile, or mounting a trim material in a vehicle. Things.

[0002]

2. Description of the Related Art Conventionally, as clips for attaching parts such as piping and wiring, there are clips shown in FIGS. 12 and 13, for example. That is, what is shown in FIG. 12 is a clip made of a synthetic resin for a pipe holder, which is composed of a clip body portion A fixed with stud bolts S and a component locking portion B for locking components such as pipes. The inside of the clip main body A is cylindrical, and two or three locking pieces K protrude from the inner peripheral surface thereof. The pipe supporting arm C and the pipe pressing piece D are provided to face each other, and the pipe P is held by the pipe supporting arm C and the pipe pressing piece D. When the clip main body A is fitted to the stud bolt S welded to the body panel E, the clip main body A is locked by a locking piece K. At this time, the tip of the clip main body comes into close contact with the body panel E as shown in the figure. Thus, stable attachment is performed with a holding force of 15 to 30 kg. When fastening the clip body, the cylindrical portion of the clip body is pressed from the head of the stud bolt S so that the threaded portion of the stud bolt deflects the locking piece K, and The tip of the clip hits the body panel E and is fixed. Usually, the fixing of the clip is directly performed by a manual operation of an operator.
If it is not more than Ｋ7 kg, long-time repetitive work becomes difficult. FIG. 13 shows a state in which the interior trim is fixed to the body panel. In this case as well, the clip body is fixed by the locking piece K and the trim T is attached. The holding force is determined by the shape and size of the locking piece K.

[0003]

However, in the conventional fastening by fitting a stud bolt with a threaded portion using only a locking piece, a holding force of only 15 to 30 kg can be obtained at most with a manually inserted clip. Or, when a larger holding force, for example, 50 to 60 kg, is required depending on an attachment portion such as a trim member, it cannot be used. In recent years, it is required to increase the holding force of the clip body due to needs in recent years. In order to increase the holding force of the clip body, it is necessary to optimally select the shape and dimensions of the locking piece K. When the holding force (referred to as the detaching force when displaying) is basically increased, the insertion force at the time of pressing the clip body is much larger than 5 to 7 kg, and is directly performed by a manual operation of an operator. There was a problem with long-time repetitive work, that is, workability.

[0004] It is an object of the present invention to provide a high holding force that can be mounted manually and easily as in the case of the conventional operation.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and comprises a box body or a cylindrical body formed integrally with a clip body and a part locking part using a synthetic resin material. A locking piece for fitting the threaded portion of the stud bolt from the bottom or side surface of the inner surface of the stud bolt fitting hole inside the clip body projects in the depth direction from the center of the stud bolt fitting hole. On the lower surface of the tip portion, a protrusion is provided on the inner surface for receiving the bending of each locking piece.
Further, a stud bolt holding piece having an arc shape corresponding to the bolt circumference is formed at the tip of each of the locking pieces, and the lower surface of the tip of the locking piece receives the bending of each locking piece. A protrusion is provided on the inner surface, so that the engagement of the locking piece with the stud bolt depends on the bending of the locking piece at the time of insertion, and at the time of disengagement, the bending of the locking piece projects on the inner surface with a lower projection. Curb,
The point is to have high holding power.

[0006]

When the clip is inserted into the stud bolt and pressed, the locking piece bends and deforms in the direction opposite to the insertion direction. When the clip is further advanced, it is guided by an elastic gripping plate for forcibly forcing the clip to the stud bolt. At the position where it is inserted to the predetermined position, the locking pieces are fitted and fastened by the threaded portions of the stud bolts. When the clip is attached, the clip insertion pressure is low because the engagement piece is deformed only.
However, when a force is applied to the clip secured to the stud bolt to cause the clip to be detached from the outside, the locking piece fitted to the threaded portion of the stud bolt is deformed by the clip detaching force to a side opposite to that at the time of insertion. . Due to the deformation of the locking piece, the lower surface of the locking piece hits the projection at this lower position, the bending deformation of the locking piece is suppressed, the locking piece is not easily detached, and the holding force increases.

[0007]

Next, a first embodiment of the high holding force clip of the present invention will be described with reference to FIGS. The stud bolt fitting type high holding force clip according to the present invention includes a clip body portion A made of synthetic resin and a pipe holding portion B. The clip for holding a pipe includes one or a plurality of pipe holding arms 16 and pipe holding pieces 17 on one side surface of a holding member body 13 of a clip body portion A, and the holding member body 13 has a square hollow or round shape. A pair of holding plates 21a, 21b which are hollow and have a head 19 for holding stud bolts
Is provided on the bottom 20 of the main body 13.
a, 14b and the locking piece 14 of the main body 13
When the locking pieces are deformed to some extent on the lower surfaces of the locking pieces a and 14b, two projections 15a, 15b, 15c, and 15d are provided to support the lower surfaces of the locking pieces.

The locking pieces 14a and 14b symmetrically rise in the space 18 in the holding member main body 13 and start from the bottom 20 of the main body 13, and bend in a direction substantially perpendicular to the axis. Then, the distal end portion is expanded, and the distal end is cut out so as to have a circular shape that easily locks the outer peripheral surface of the stud bolt. This state is shown in FIGS.

The protrusions 15a, 15b, 15c, 15d for supporting the deformation of the locking pieces 14a, 14b are projected from both sides of the inner side surface of the holding member body 13, and the tip ends thereof are as shown in FIG. It is formed in a curved L-shape, and the ends are horizontal and opposing inclined surfaces, and the extended ends of the locking pieces 14a, 14b are formed with protrusions 15a, 15a.
b, 15c, 15d (see FIG. 3).
), The distance between the tip of the locking piece and the tip of the raised head is
For example, 0.2 to 0.5 mm or less, preferably 0.1 to 0.
It is arranged as extremely small as 4 mm.

This embodiment is constructed as described above. Next, the operation during use will be described with reference to FIGS. That is, first, the pipe P is held by the pipe holding arm 16, and then the fitting is externally inserted into the stud bolt S from the bottom portion 20 of the clip body. With this external fitting, the locking pieces 14a, 14b of the clip body are pushed up by the stud bolt S, bent, and fitted into the threaded portions of the stud bolt in the state shown in FIG. Get engaged. In addition, since the tip of the stud bolt S is guided by the grip plates 21a and 21b of the clip main body when externally inserted, the clip main body is securely pushed in along the stud bolt S as shown in FIG. .

Next, when an external force (removing force) opposite to that when the engaged clip main body is inserted is applied, as shown in FIG. A gap of t1 is created. At this time, since the locking pieces 14a and 14b of the clip body A are fitted to the threaded portions of the stud bolts S, they are deformed and bent in the bottom direction, and the protrusions 15a, 15b, 15c and 15d are raised. The locking pieces 14a, 14b are subjected to resistance by contacting the tips 22a, 22b, 22c, 22d, thereby suppressing bending due to deformation.

However, when a larger external force (separation force) is applied, the locking pieces 14a and 14b are supported by the protruding tips 22a and 22c at both ends of the locking piece 14a as shown in FIG. As shown, the locking piece 14a is bent and bent, and as a result, the gap between the clip body and the body panel E is enlarged at t2. Further, when a larger external force (separation force) is applied, the bending due to the deformation of the locking pieces 14a and 14b further increases, the fitting of the stud bolt to the threaded portion is released, and the clip main body is separated from the stud bolt. Leave completely.

After the clip is completely pulled out, the locking pieces 14a, 14b return to their original shape due to their elasticity, so that they can be reused. As described above, the insertion force of the clip can be reduced, and the pull-out force (removal force) can be increased. This is because the bending of the locking piece is suppressed by the protrusion.

FIGS. 9 to 11 show still another different embodiment.
It will be described based on. In this embodiment, the operation is the same as that of the first embodiment for holding a pipe, but the structure of the locking piece inside the holding portion is different. FIG. 9 is a cross-sectional view of the clip holding portion main body 23 in the second embodiment, and FIG. 10 is a central vertical cross-sectional view of FIG.

9 and 10, the locking pieces 24a and 24b rise from the bottom of the holding section main body 23 in the same manner as in the first embodiment, and the stud bolts extend vertically upward from the tips of the locking pieces 24a and 24b. The holding pieces 25a, 25b are protruded, and the stud bolt holding pieces 25a, 25b are formed in an arc shape that holds about 1/4 of the outer circumference of the stud bolt. It is located symmetrically above 24b.

Also, the stud bolt holding pieces 25a,
One or two or more locking screws 26a and 26b are provided on the inner side of 25b, and are formed so as to fit and hold one or more of the screws of the stud bolt S. As in the first embodiment, the protrusions 27a, 27
b, 27c, and 27d are provided, and when the clip is pulled out in the same manner as in the first embodiment, the deformation of the locking piece is made to protrude to prevent the deformation of the locking piece, thereby preventing the clip from falling off. is there.

FIG. 11 shows a state in which the clip of the present invention is fixed to a stud bolt S welded to the body panel E. As shown in FIG. 11, when the stud bolt S is inserted into the stud bolt S, the stud bolt holding pieces 25a and 25b are easily expanded and the clip is inserted.
The locking screws 26a and 26b of the clip are fitted and fastened to the threaded portions.

Next, when a pulling force is applied to the clip, the locking pieces 24a and 24b are raised from the projections 27a, 27b 27c 27d.
Is not easily pulled out because the bending of the locking piece is limited, but when a larger pulling force is applied, the locking piece is supported by the protrusions 27a, 27b, 27c, 27d, This is because the locking screw 26a26b starts to be disengaged from the screw of the stud bolt, starts to bend from the center portion, and the clip is pulled out.

As described above, also in the second embodiment, the first
As in the embodiment, the protrusions 27a, 2
7b, 27c and 27d increase the holding force (release force) of the clip by suppressing bending of the locking piece.

[0020]

According to the present invention, a clip having a high holding force is formed by integrally forming a clip main body and a component locking portion in a box shape or a cylindrical shape using a synthetic resin material, and an inner surface of a stud bolt fitting hole inside the clip main body. At least one locking piece for fitting the threaded portion of the stud bolt from the bottom or side of the stud bolt is provided at the center of the stud bolt fitting hole at least one or more in the depth direction. Since the projections for receiving the bending of each locking piece are provided on the inner surface, the insertion of the clip can be stopped with a small force that is almost the same as the conventional one by hand, and the holding force can be increased. This has the advantage that a high holding force (separation force) can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a high holding force clip of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a cross-sectional view of the clip of the present invention, showing a state in which a locking piece is fitted to a thread portion of a stud bolt.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a cross-sectional view showing a state in which an external force is applied to the clip, the locking piece is bent, and the protrusion is suppressed.

FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7, showing the bending of the locking pieces when the external force on the clip further increases.

FIG. 9 is a cross-sectional view of a clip holding portion main body according to a second embodiment.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

FIG. 11 is a view showing a fitted state of a clip,
It is sectional drawing by the I-XI line.

FIG. 12 is a cross-sectional view of a conventional pipe holding clip in a clip-fixed state showing engagement of a locking piece.

FIG. 13 is a cross-sectional view of a conventional trim fixing clip in a clip-fixed state showing engagement of locking pieces.

[Explanation of symbols]

 Reference Signs List A clip main body B pipe holding part S stud bolt 13 holding member main body 14a, 14b locking piece 15a, 15b, 15c, 15d

Continuation of the front page (56) References JP-A-2-209608 (JP, A) JP-A-1-77116 (JP, U) JP-A-2-69108 (JP, U) JP-A-59-7620 (JP) , U) Shokai 64-45423 (JP, U) Shohei 5-50275 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16B 37/08 F16B 21/07

Claims (3)

(57) [Claims] 1. A clip body and a component locking portion are integrally formed in a box shape or a cylindrical shape using a synthetic resin material, and a stud bolt is formed from a bottom or side surface of an inner surface of a stud bolt fitting hole inside the clip body. At least one locking piece for fitting to the threaded portion is protruded from the center of the stud bolt fitting hole in the depth direction at least one.
A stud bolt fitting type high holding force clip, characterized in that a protrusion for receiving bending of each locking piece is provided on an inner surface. 2. A clip body and a component locking portion are integrally formed in a box or tube shape using a synthetic resin material, and a stud bolt is formed from a bottom or side surface of an inner surface of a stud bolt fitting hole inside the clip body. At least one locking piece for fitting to the threaded portion is protruded from the center of the stud bolt fitting hole in the depth direction, and the tip of each locking piece is formed in an arc shape in accordance with the circumference of the bolt. A stud bolt fitting type high holding device characterized in that a bolt holding piece is formed, and furthermore, a projection is provided on an inner surface on a lower surface of a tip portion of the locking piece to receive bending of each locking piece. Power clip. 3. A stud bolt holding piece formed in an arc shape in accordance with the circumference of the bolt at a tip end of the locking piece, and a projection for fitting and locking to a thread portion of the stud bolt is provided on an inner surface of the stud bolt holding piece. Item 3. A stud bolt fitting type high holding force clip according to Item 2.