JPH031606Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is a garnish made of synthetic resin that is formed by injection molding on a vehicle body sheet metal, etc., which is a member to which it is attached, and which has a coefficient of linear expansion that is different from that of the member to which it is attached. When attaching a long object such as a molding, regarding the assembly structure of the clip used by attaching it to the long object, in particular, a box-shaped convex part is formed integrally on the back of the long object when forming the long object. The present invention relates to a clip assembly structure in which the clip is assembled via the convex portion.

<Prior Art> Conventionally, this type of assembly structure has been shown in FIGS. 7 to 9.

The clip 6 to be assembled is made of ABS, POM,
It was formed from a synthetic resin material such as PA, and included a square plate-shaped flange portion 7 and a locking leg portion 9 protruding from the center of the flange portion 7 via a disc-shaped neck portion 8.

The long object to which this clip 6 is attached is a garnish 1 made of a synthetic resin material such as PP or ABS that is attached to a vehicle body sheet metal 10. A substantially rectangular parallelepiped box-shaped convex portion 2 for attaching a clip 6 formed in is protrudingly provided.

The convex portion 2 has a side opening 3 formed on one side in the longitudinal direction of the garnish 1 (in the left-right direction in FIGS. 7, 8, and 10) into which the flange portion 7 of the clip 6 can be inserted. , an upper opening 4 is formed on the upper surface of the garnish 1 extending from the side opening 3 in the longitudinal direction into which the neck 8 of the clip 6 can be inserted and moved; Two protrusions 5, 5 for assembling and locking the clip 6 were formed in the vicinity of the clip 3.

Incidentally, since the garnish 1 is made of synthetic resin and the vehicle body sheet metal 10, which is the member to which it is attached, is made of metal with a coefficient of linear expansion different from that of the garnish 1, heat is applied after the garnish 1 is attached to the vehicle body sheet metal 10. And, the garnish 1 is the car body sheet metal 10.
Since the garnish 1 expands further, the garnish 1 needs to be attached to the vehicle body sheet metal 10 so as to be movable in the longitudinal direction of the garnish 1 in order to prevent the garnish 1 from being deformed. Therefore, if the clip 6 itself is attached to the garnish 1 so as to be movable in the longitudinal direction of the garnish 1, the above problem can be solved. The side opening 3 and the upper opening 4 of the convex portion 6 are formed along the longitudinal direction of the garnish 1 so that the clip 6 can be moved in the longitudinal direction of the garnish 1 after assembly, and the clip neck 8 after assembly can be moved in the longitudinal direction of the garnish 1. The upper opening 4 for locking the garnish 1 needs to be longer than the shape of the neck 8 in the longitudinal direction of the garnish 1 so that the neck 8 can be moved.

Therefore, this clip 6 is attached to the garnish 1.
When assembling the clip, the flange 7 of the clip 6 is inserted through the side opening 3 of the protrusion 2 while the locking leg 9 protrudes from the upper opening 4 through the neck 8, and the protrusion 5, By pushing the clip 6 until the neck 8 passes through the garnish 1, the clip 6 can be assembled to the garnish 1 so as to be movable in the longitudinal direction of the garnish 1, as shown in FIGS.

There are a plurality of protrusions 2 on the back side of the garnish 1.
are provided protrudingly, and the clip 6 is assembled to each convex portion 2 as described above, and then the locking leg 9 of the clip 6 is inserted into the mounting hole 10a of the vehicle body sheet metal 10, which is the member to be mounted, using a spring elastic force. The garnish 1 was attached to a predetermined vehicle body sheet metal 10 by being deformed and attached.

<Problems to be solved by the invention> However, in the conventional assembly structure, if the height of the protrusions 5, 5 is reduced, the clip 6 will easily come off from the protrusion 2 after the clip 6 is assembled. 5 cannot be made too low, and when assembling the clip 6, the clip neck 8 is forced into the space between the protrusions 5, 5, and the side walls 2a, 2a of the protrusion 2 are pushed outward. It became necessary to flex it, and the assembly work had to be performed with force using tools, etc., resulting in poor assembly work efficiency.

In addition, in the conventional assembly structure, since the protrusions 5 are formed on the inner circumferential surface of the upper opening 4, if it is attempted to mold the protrusion 2 at the same time as the garnish 1, as shown in FIG. , garnish 1
a movable mold 13 for molding the surface of the
A fixed mold 12 that molds the back surface of the projection 2, the upper surface/side surface of the projection 2, and the inner peripheral surface of the upper opening 4, and a slide core 14 that molds the periphery of the side opening 3 of the projection 2 and the inside thereof. A mold 11 with different types was required.

However, the portion 14a forming the inside of the convex portion 2 at the tip of the slide core 14 simply extends with its cross-sectional shape being the same as the shape of the side opening 3 of the convex portion 2, and is formed thin and long. In particular, the strength of the tip 14a is low, and the tip 14a may break during molding of the garnish 1, making it impossible to obtain sufficient strength of the mold 11.

Furthermore, in the conventional assembly structure, taking into consideration the difference in linear expansion coefficient between the vehicle body sheet metal 10 and the garnish 1,
After assembly, the clip 6 is inserted into the garnish 1 within the protrusion 2.
It is configured to be movable in the longitudinal direction. Therefore, when attaching the garnish 1 to the vehicle body sheet metal 10 after the clip 6 has been assembled, the clip 6 is likely to be displaced.
This makes the work of locking the locking leg portion 9 to the mounting hole 10a of the vehicle body sheet metal 10 time-consuming, and the workability of installing the garnish 1 is deteriorated.

This invention solves the above-mentioned problems, and in this type of assembly structure, the workability of assembling the clip and the workability of attaching the long object to the member to be attached after the clip is assembled are improved. In addition, it is possible to improve the strength of the mold used for molding long objects, which is equipped with a protrusion for clip assembly, and to minimize damage to the mold when molding long objects. The purpose is to provide structure.

<Means for Solving the Problems> The clip assembly structure according to this invention attaches a long object made of synthetic resin formed by injection molding to a member to be attached that has a coefficient of linear expansion different from that of the long object. This is an assembly structure for a clip used by attaching it to a long object when attaching the clip, in which the clip protrudes from the flange portion and the neck portion and deforms elastically into the attachment hole of the attached member. The back side of the long object has a side opening into which a flange can be inserted into one side in the longitudinal direction of the long object, and the top surface has a side opening into which a flange can be inserted. A box-shaped convex portion that is connected in the longitudinal direction of the object and has an upper opening into which the neck can be inserted and moved is integrally formed during molding of the long object, and the locking leg protrudes from the upper opening through the neck. In this clip assembly structure, the flange portion is inserted into the convex portion from the side opening while the clip is attached to the long object so as to be movable in the longitudinal direction of the long object. A hook-shaped locking piece is formed that includes a rod-shaped portion extending to the top and a hook portion provided at the tip of the rod-shaped portion, and a plurality of protrusions that protrude smaller than the hook portion are formed near the middle of the rod-shaped portion of the hook-shaped locking piece. A locking hole is formed in the side surface of the convex portion opposite to the side opening in the longitudinal direction of the long object, and when the clip is assembled to the convex portion, the hook-shaped locking piece is inserted into the locking hole. By elastically deforming and inserting the clip, movably locking the clip, and fitting the inner peripheral surface of the locking hole between the protrusions of the rod-shaped portion to temporarily lock the clip, the clip can be temporarily secured. It is a solution to a problem.

<Operations and effects of the invention> In the clip assembly structure according to this invention, a predetermined hook-shaped locking piece is formed on the flange of the clip,
A predetermined locking hole is formed in the convex part of the long object,
When assembling the clip, with the hook-shaped locking piece of the clip at the top, insert the flange part into the convex part from the side opening while protruding the locking leg from the upper opening through the neck, and then insert the flange part into the convex part from the side opening. If you insert the hook-shaped locking piece,
The hook-shaped locking piece deforms elastically and locks in the locking hole, allowing the clip to be easily and movably attached to a long object. When inserting the hook-shaped locking piece into the locking hole, the inner circumferential surface of the locking hole is fitted between the protrusions of the rod-shaped part, and the clip is temporarily secured within the protrusion, allowing the clip to be assembled. When attaching the long object to the object to be attached, the clip does not shift, making it easy to align the locking leg of the clip with the mounting hole of the object to be attached, making it easier to attach the long object to the object to be attached. Workability can be improved. Note that this temporary fixing is such that the protrusion of the rod-shaped part of the hook-shaped locking piece does not protrude from the hook part, and if the elongated object expands or contracts due to heat after being attached to the attached member, it will easily come off.
It is possible to prevent a long object from being deformed.

In addition, for long objects with assembly structures related to this invention,
The inner circumferential surface of the upper opening of the convex portion does not have a protrusion that would create an undercut as in the prior art.

Therefore, the molds used to mold long objects are either movable molds or fixed molds that mold the surface of long objects.
A fixed mold or a movable mold that molds the back surface of a long object, the top surface and side surfaces of a convex part, and the inside of a convex part such as the inner circumferential surface of a locking hole, the inner circumferential surface of an upper opening, and the inner circumferential surface of a side opening of a convex part. You can use one consisting of a slide core that molds. And especially in the slide core,
Since the inner circumferential surface of the upper opening of the convex portion is formed in an increased amount and becomes thicker than the conventional slide core, the strength of the slide core can be improved and breakage of the slide core during molding can be prevented.

Therefore, the clip assembly structure according to this invention can be easily assembled by simply deforming the hook-shaped locking piece elastically, improving the assembly work efficiency, and making it easier to assemble the clip. Since the clip can be temporarily fixed inside the convex part during installation, the workability of attaching the long object to the member to be attached is improved. Since the strength of the mold is improved, breakage of the mold during molding of a long object can be suppressed as much as possible.

<Example> An example of this invention will be described below based on the drawings.

The clips 26 assembled in the embodiment include the first to
As shown in Figure 4, as before, ABS
It is formed from a synthetic resin material such as POM/PA, and is elastically deformed into the mounting hole 10a of the vehicle body sheet metal 10 through a rectangular plate-shaped flange part 27 and an oblong plate-shaped neck part 28 from the center of the flange part 27. A locking leg portion 29 is provided. A hook-shaped locking piece 30 is formed on the side surface of the flange portion 27 of the clip 26, extending in the radial direction and having a hook portion 30a at the tip of a rod-shaped portion 30b. On the side surface near the middle of the rod-shaped portion 30b of the hook-shaped locking piece 30, there are two small protrusions 30c, 30 that protrude smaller than the hook portion 30a.
c (about 0.5 to 1.3 mm in height) is formed.

The long object to which this clip 26 is attached is the garnish 1, which has a generally U-shaped cross section similar to the conventional one and is formed by injection molding from a synthetic resin material such as PP or ABS.

As shown in FIGS. 1 to 5, this garnish 21 has a garnish 21 attached at a predetermined position on the back side of the garnish 21.
A predetermined number of substantially rectangular parallelepiped box-shaped convex portions 22 are formed integrally during molding.

This protrusion 22 has a side opening 23 formed in one side of the garnish 21 in the longitudinal direction (left and right directions in FIGS. 1, 2, and 5) into which a flange 27 of the clip 26 can be inserted. An upper opening 24 is formed in the upper part of the garnish 21, extending from the side opening 23 in the longitudinal direction of the garnish 21, into which the neck 28 of the clip 26 can be inserted and moved. Further, on the side surface facing the side opening 23 in the longitudinal direction of the garnish 21, a side opening 2 is provided approximately in the center thereof.
A locking hole 25 whose opening area is smaller than that of the locking hole 25 is formed.

Incidentally, the position and size of the locking hole 25 are such that the hook-shaped locking piece 30 is at the top, the locking leg 29 projects from the upper opening 24 through the neck 28, and the clip flange 27 The side opening 2
3 into the convex portion 22, the hook-shaped locking piece 3
The length of the hook-shaped locking piece 30 (bar-shaped portion 30b) is such that the length of the hook-shaped locking piece 30 (rod-shaped portion 30b) is such that the clip 26 can be attached to the garnish 21 with the clip 26 assembled. Clip 26
After being attached to the vehicle body sheet metal 10 via the garnish 21, the length is such that the garnish 21 can be smoothly moved relative to the vehicle body sheet metal 10 due to the difference in coefficient of linear expansion.

At a predetermined position on the inner circumferential surface of the locking hole 25 in the embodiment, when the clip 26 is assembled, protrusions 30c, 3 near the middle of the bar-shaped portion 30b of the hook-shaped locking piece 30 are provided.
A tapered fitting part 25a that can be fitted between 0c
are formed, and the projections 30c, 30c of the fitting part 25a
The structure is such that the fitting between the clips 26 and 22 can be used for temporarily fixing the protrusion 22 of the clip 26.

Note that 24a is the locking leg 29 of the clip 26.
This is a recess provided at the periphery of the upper opening 24 so that the tip does not come into contact with the upper surface of the convex portion 22 .

Therefore, in the assembly structure of the embodiment, when the clip 26 is assembled to the garnish 21, the hook-shaped locking piece 30 is placed at the top, and the locking leg 29 is projected from the upper opening 24 of the convex portion 22. By inserting the flange portion 27 into the convex portion 22 through the side opening 23 and elastically deforming the hook-shaped locking piece 30 to lock it in the locking hole 25 in a manner that cannot be removed, the clip 26 can be locked. Garnish 2 against Garnish 21
It can be assembled so as to be movable in one longitudinal direction, and at that time, only the hook-shaped locking piece 30 is simply bent elastically, so it can be assembled by hand without using tools as in the past. Easy to assemble, easy to assemble.

When assembling the clip, the fitting part 25a of the convex part 22 is fitted between the protrusions 30c, 30c of the clip 26, and the clip 26 is temporarily fixed to the convex part 22. Similarly, attach the clip 26 to the mounting hole 1 of the vehicle body sheet metal 10.
The garnish 21 can be attached to a predetermined vehicle body sheet metal 10 by engaging the locking leg 29 of the clip 26 with the clip 0a.

At this time, in the embodiment, unlike the conventional assembly structure, the clip 26 can be temporarily fixed to the convex part 22 via the fitting part 25a and the protrusions 30c, and when the garnish 21 is attached. When inserting the locking leg portion 29 into the mounting hole 10a of the vehicle body sheet metal 10 in , there is no displacement of the clip 26, which facilitates positioning and improves installation workability. Of course, after the garnish 21 is attached to the vehicle body sheet metal 10, since the heights of the protrusions 30c and 30c are low, the garnish 2
Even if the garnish 1 tries to extend or contract in the longitudinal direction of the vehicle body sheet metal 10, the garnish 2 will easily come out of its temporarily fixed state.
1 will not cause any unnecessary deformation.

Further, the garnish 21 of the embodiment does not have an undercut protrusion formed on the inner circumferential surface of the upper opening 24 of the convex portion 22 as in the prior art. Therefore, as shown in FIG. 6, the mold 31 used for molding the garnish 21 includes a movable mold 33 that molds the front surface of the garnish 21, and a fixed mold 33 that molds the back surface of the garnish 21 and the top and side surfaces of the convex portion 22. The mold 32 and the locking hole 25 of the convex portion 22
Inner circumferential surface/top opening 24 Inner circumferential surface and side opening 2
3 and a slide core 34 that molds the inside of the convex portion 22 such as the inner circumferential surface can be used. In particular, the distal end portion 34a of the slide core 34 that forms the inside of the convex portion 22 includes a portion that forms the inner peripheral surface of the upper opening 24 in the convex portion 22, compared to the conventional slide core 14 shown in FIG. The only thin part is the part 340a that forms the inner peripheral surface of the locking hole 25, and the thin part 340a is relatively shorter than the length of the tip part 34a, and has a high strength. Since the influence is not so great, the strength of the entire slide core 34 is improved compared to the conventional one, and it becomes possible to suppress breakage of the mold 31 during molding as much as possible.

[Brief explanation of the drawing]

Figure 1 shows one embodiment of this invention, and is a plan view showing the state in which the clip is assembled, and Figure 2 shows the first embodiment of the invention.
3 is a side view of the same embodiment.
FIG. 4 is an exploded perspective view of the same embodiment, FIG. 5 is a partial plan view of the garnish of the same embodiment, and FIG. 6 is a cross-sectional view of the mold showing the garnish of the same embodiment during molding.
FIG. 7 is a plan view showing the conventional assembled state, FIG. 8 is a sectional view taken from FIG. 7, and FIG. 9 is a side view of the conventional
FIG. 10 is a partial plan view of a conventional garnish, and FIG. 11 is a sectional view of a mold showing the conventional garnish during molding. 1, 21... (long object) garnish, 2, 2
2... Convex portion, 3, 23... Side opening, 4, 24
...Top opening, 6,26...Clip, 7,2
7... Flange part, 8, 28... Neck part, 9, 29
... Locking leg portion, 10 ... (attached member) Vehicle body sheet metal, 10a ... Mounting hole, 11, 31 ... Mold, 1
2, 32... Fixed type, 13, 33... Movable type, 1
4, 34...slide core, 25...locking hole, 3
0...Hook-shaped locking piece.

Claims (1)

[Claims for Utility Model Registration] When a long object made of synthetic resin formed by injection molding is attached to a member to be attached that has a coefficient of linear expansion different from that of the long object, the long object is assembled to the long object. The clip assembly structure used includes a flange portion and a locking leg that protrudes from the flange portion through a neck portion and can be elastically deformed and locked into a mounting hole of the attached member. a side opening on the back surface of the elongated object into which the flange portion can be inserted into one side in the longitudinal direction of the elongated object; A box-shaped convex portion having an upper opening in which the neck portion can be inserted and moved in series is integrally formed during molding of the long object, and the locking leg portion protrudes from the upper opening via the neck portion. In the clip assembly structure, the flange portion is inserted into the convex portion from the side opening while the clip is assembled to the elongated object so as to be movable in the longitudinal direction of the elongated object, wherein the clip includes: A hook-shaped locking piece is formed on the side surface of the flange portion, and includes a rod-shaped portion extending in the radial direction and a hook portion provided at the tip of the rod-shaped portion, and the rod-shaped portion of the hook-shaped locking piece has a rod-shaped portion near the middle thereof. A plurality of protrusions projecting smaller than the hook portion are formed, a locking hole is formed in the side surface of the protrusion that faces the side opening in the longitudinal direction of the elongated object, and the protrusion of the clip When assembled to the rod-shaped part, the hook-shaped locking piece is elastically deformed and inserted into the locking hole to movably lock the clip, and the locking piece is inserted between the protrusions of the rod-shaped part. A clip assembly structure characterized in that the clip can be temporarily fixed by fitting the inner peripheral surface of the hole.