JP2518154Y2 - Mounting device for automobile parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mounting device for automobile parts, and is used, for example, for detachably fixing a plastic scuff plate to a floor panel of an automobile.

[Prior Art] Conventionally, as a mounting device of this type, a panel having a mounting hole, a plastic component having a boss portion integrally extending toward the mounting hole of the panel, and a boss portion of the component And a plastic clip attached to the mounting hole of the panel in a state of holding the inside, the clip having an opening of a size into which the boss portion of the component fits,
A collar part that is one size larger than the panel mounting hole, a leg that extends vertically downward from the lower edge of the opening of this collar part, and has an outer shape that is one size smaller than the panel mounting hole. It protrudes from the outer surface and passes through the mounting hole while reducing its diameter. After passing through the mounting hole, it expands to form the locking part that holds the panel from the front and back sides together with the lower surface of the collar part. It was equipped (for example, JP-A-52-86900, JP-A-63-137109, etc.).

The former one (Japanese Patent Laid-Open No. 52-86900) is such that, at the tip of the boss portion of the component, it extends outwards in the middle of its height, facing back to each other and separated from the lower surface of the component. With a pair of overhanging edges facing each other, the leg part of the clip is
A plurality of protrusions having projecting portions facing each other toward the inside of the cylinder and having engaging step portions that engage with the respective projecting edges of the tip portion of the boss portion were provided.

Then, the tip of the boss portion is inserted and removed by using the elasticity of the entire outer wall of the cylinder of the leg portion.

In the latter one (Japanese Utility Model Laid-Open No. 63-137109), the boss portion is held inside the cylinder of the leg portion of the clip via the U-shaped leaf spring material made of metal. That is, the leaf spring material has a plurality of claws projecting in opposition to each other in the U-shaped groove, and by making the claws bite into the outer surface of the boss part inserted in the U-shaped groove, the boss part is formed. It was held in the U-shaped groove of the leaf spring material.

[Problems to be Solved by the Invention] However, in the former mounting device of the related art described above, when the boss portion is inserted, the entire cylindrical outer wall of the leg portion of the clip has to be elastically deformed. There is a problem that the force is large and also a large force is required when pulling out the boss portion.

Also, in the latter mounting device, since the claws of the leaf spring material bite into the outer surface of the boss portion, the insertion force is large, and since the claws of the leaf spring material bite into the outer surface of the boss portion, the boss portion is pulled out. In that case, there is a problem that a very large force is required as compared with the time of insertion. In addition to this, when the boss part is pulled out, the claw marks remain, and when the boss part is inserted next time, the claws bite into the claw marks, which reduces the bite amount of the claws and creates a gap between the claw marks. There was a problem that the holding power was reduced.

Therefore, the present invention has been made in view of the problems of the above-described conventional technique, and the purpose thereof is to make it possible to insert and remove the boss portion relatively easily and to stably hold the boss portion even when it is reused. The present invention seeks to provide a mounting device for automobile parts that can obtain power.

[Means for Solving the Problems] The present invention is for achieving the above-mentioned object, and its contents will be described below using embodiments shown in the drawings.

According to the present invention, a pair of overhanging edges (opposite to the boss portion (21) of the component (20), which bulge outwards in the middle of their heights, and bulge outward from each other, and which face downwardly from the lower surface of the component ( 23), and at the legs (60) of the clip (40), projecting toward the inside of the cylinder so as to face each other and engaging with both the projecting edges of the boss (steps). 81), and a pair of slits (63, 64) located on the left and right sides of each projection and formed on the outer wall of the leg cylinder.
And a thin upper hinge part (82) connected from the upper end of the protrusion to the inner edge of the opening (51) of the collar (50), and a lower side connected from the lower end of the protrusion to the outer wall of the leg cylinder. And a hinge part (83).

[Operation] Therefore, according to the present invention, the boss portion (21) of the component (20) is connected to the opening portion (51) of the collar portion (50) of the clip (40).
When it is inserted in accordance with, the outer surface of the tip end portion of the boss portion engages with the protrusions (80) projecting in opposition to each other toward the inside of the cylinder. When the boss is pushed hard, the protrusions are separated from the outer wall of the leg by the slits (63, 64) on both sides, so the thin upper hinge (82) and lower hinge (83) By bending from the outside toward the outside of the cylinder, the insertion of the tip of the boss is allowed.

Then, when the projecting edge (23) of the boss passes through the locking step (81) of the protrusion, the protrusion is restored by the elastic force of the upper hinge part and the lower hinge part, and thus the protrusion part. The engaging stepped portion of is engaged with the protruding edge of the boss portion, and the boss portion is held inside the tube of the leg portion of the clip.

Therefore, the components attach to the panel 30 via clips.

On the other hand, when removing the component, the boss portion may be strongly pulled out from the inside of the cylinder of the leg portion of the clip.

When the boss is pulled hard, the projections of the clip leg will come out of the upper hinge and lower hinge again toward the outside of the cylinder.
By bending, the tip portion of the boss portion comes out from the inside of the cylinder of the leg portion through the opening portion of the collar portion.

[Embodiment] The present invention will be described below based on one embodiment shown in the drawings.

FIG. 1 is an exploded cross-sectional view of a main part of a mounting device, FIG. 2 is a front view of a clip, FIG. 3 is a side view of the same, and FIG. 4 is a plan view of the same.
FIG. 5 is a bottom view of the same, and FIG. 6 is an exploded sectional view of another main part of the attachment device.

In the figure, 10 indicates a mounting device for a component 20 of an automobile (not shown), and this device 10 uses, for example, a plastic scuff plate as the component 20 and a boss portion 21 thereof for a floor panel of the automobile or the like. It is used for removably fixing to the mounting hole 31 of the panel 30 of.

This device 10 is roughly divided into a panel 30 having the above-mentioned mounting hole 31 and a boss portion 21 vertically extending toward the mounting hole 31 of the panel 30, as shown in FIGS. A plastic part (20) and a plastic clip (40) attached to a mounting hole (31) of a panel (30) while holding a boss portion (21) of the part (20) inside.

The panel 30 is made of metal, and has a plurality of oval-shaped mounting holes 31 penetrating vertically formed in accordance with the mounting intervals of the boss portions 21 of the component 20.

The component 20 has the same number of boss portions 21 as the mounting holes 31 of the panel 30, and is integrally molded of a thermoplastic resin having appropriate rigidity, such as PP (polypropylene).

As shown in FIGS. 1 and 6, the boss portion 21 hangs down from the lower surface of the component 20 in a tongue shape, and its tip portion has a blunt tip-shaped tip bulge as shown in FIG. The protruding portion 22 is formed.

As shown in FIG. 1, the tip bulging portion 22 is a boss portion.
From the middle of the height of 21 to the back of each other, the mounting hole 31 of the panel 30
In the lateral direction (A-A direction) of the component 20, and a pair of overhanging edges 23, 23 facing downward and below the lower surface of the component 20, and tapering from the lower side of both overhanging edges 23. Both tapered surfaces 24,2
And 4.

Then, the both projecting edges 23 are inclined downward toward each other.

Further, as shown in FIG. 6, the tip end bulging portion 22 has circular arc surfaces 25 with rounded corners on both sides of the lower end portion located in the longitudinal direction (BB direction) of the mounting hole 31 of the panel 30. , 25 are formed.

As shown in FIGS. 1 to 6, the clip 40 is a component 20.
The boss portion (21) has an opening portion (51) of a size that fits into the boss portion (21) and is one size larger than the mounting hole (31) of the panel (30).
The leg portion 60 vertically extending from the lower edge of the opening of the opening portion 51 and having an outer shape slightly smaller than the mounting hole 31 of the panel 30, and protruding from the outer surface of the leg portion 60, and in the mounting hole 31. After passing through the mounting hole 31 while reducing the diameter, it expands and holds the panel 30 between the lower surface of the collar portion 50 and the front surface and the rear surface thereof.
And having a proper elasticity and rigidity, for example,
It is integrally molded with thermoplastic resin such as POM (polyoxymethylene).

As shown in FIG. 4, the flange 50 has an elliptical shape that is slightly larger than the mounting hole 31 of the panel 30, and has a rectangular opening 51 in the center thereof.

As shown in FIGS. 1 to 6, the leg portion 60 has a hollow rectangular tube shape, and the inside of the tube portion communicates with the opening portion 51 of the collar portion 50 in the vertical direction, and has a rectangular shape like the opening portion 51. Is done. Specifically, the leg portion 60 is formed in the lateral direction of the mounting hole 31 of the panel 30 (first
A pair of side walls 61, 61 facing each other in the AA direction) and a pair of side walls facing each other in the longitudinal direction (the B-B direction in FIG. 6).
It consists of 62 and 62.

Then, as shown in FIGS. 1 to 6, inside the leg portion 60, a locking step which projects toward the inside of the cylinder and is engaged with both the projecting edges 24 of the boss portion 21 respectively. At least a pair of protrusions 80, 80 having a portion 81, a pair of slits 63, 64 formed on the outer wall of the leg 60 at the left and right sides of each protrusion 80, and the upper end of the protrusion 80. A thin upper hinge portion 82 connected to the inner edge of the opening 51 of the collar 50 and a lower hinge portion 83 connected to the outer wall of the leg 60 from the lower end of the projection 80.

More specifically, as shown in FIG. 1, both projections 80 are formed in the lateral direction of the mounting hole 31 of the panel 30 (A-A in FIG. 1).
Direction)) on both side walls 61, 61 facing each other.
From the inner surface of 1,61, they are opposed to each other toward the inside of the cylinder and project in a V-shaped cross section. The downward surface of each projection 80 is used as a locking step 81, and the locking step 81 is formed by the protruding edge 23 of the boss 21.
It has a complementary shape with and is slightly inclined upward. In addition, the diagonally upward surface of each protrusion 80 is
The inclined surfaces 84 engage with the tapered surfaces 24 at the tips of the.

As shown in FIGS. 2 and 6, the both slits 63 and 64 are parallel to each other and vertically formed on each side wall 61, and each upper end portion 63a and 64 is formed.
As shown in FIG. 4, the a reaches the flange portion 50, and the upper hinge portion 82 is more easily bent. Further, the lower ends of the slits 63 and 64 extend to the middle of the height of the side wall 61 and are interrupted. Further, on both sides of the upper hinge portion 82 of the protrusion 80,
As shown in FIGS. 1 and 6, four guide protrusions 52 that project inward from the inner edge of the opening of the opening 51 of the collar 50 and are inclined in an arc shape.
... is provided.

The upper and lower hinge portions 82 and 83 are, as shown in FIG.
Each wall thickness is set to about 1/2 of the wall thickness of the side wall 61 to facilitate bending.

As shown in FIGS. 1 to 3, 5, and 6, the locking portion 70 has both side walls 61, 61 opposed to each other in the lateral direction (A-A direction in FIG. 1) of the mounting hole 31 of the panel 30. Of the plurality of first locking pieces 71 protruding from the outer surface of the pair of left and right second locking pieces protruding from the outer surfaces of the side walls 62, 62 facing each other in the longitudinal direction (BB direction in FIG. 6). It consists of 72 and 72.

The first locking piece 71 is, as shown in FIGS.
A total of four pieces are provided on both sides of the above-mentioned protrusion 80. More specifically, as shown in FIGS. 2 and 6, each side wall 61 is provided with U-shaped notches 65 and 66 including slits 63 and 64 on both sides of the protrusion 80, and each notch is formed. Surrounded by 65,66,
A first locking piece 71 whose free end is directed upward is formed inward of the first locking piece 71. Each first locking piece 71 has a side wall 61, as shown in FIG.
From the outer surface of the sloping surface in a sawtooth-shaped cross-section with the slanting surface facing downward.
An engaging step 71a is formed that engages with the lower edge of the.

Further, as shown in FIGS. 2 and 6, the second locking pieces 72 extend obliquely upward from the lower end of each side wall 62, apart from the outer surface of the side wall 62, and each tip is free. On the outer surface of the end portion, an engagement step portion 72 that engages with the lower edge portion of the mounting hole 31 of the panel 30.
forming a respectively.

Next, the procedure for attaching the component 20 will be described with reference to FIG. FIG. 7 corresponds to FIG. 1 described above and shows a cross-sectional view of essential parts showing the mounting state of the mounting apparatus 10.

In the component 20, the clip 40 may be attached to the boss portion 21 in advance and then the clip 40 may be attached to the attachment hole 31 of the panel 30, or the clip 40 may be attached to the attachment hole 31 of the panel 30 in advance. Alternatively, the boss portion 21 of the component 20 may be mounted later, and the former mounting procedure will be described as an example here.

 First, the clip 40 is attached to the boss portion 21 of the component 20.

That is, the boss portion 21 of the component 20 is inserted from the distal end bulging portion 22 in alignment with the opening portion 51 of the collar portion 50 of the clip 40 (Fig. 1).

When the boss portion 21 is inserted, the distal end bulging portion 22 advances from the opening 51 of the collar portion 50 into the inside of the leg 60, and engages with both projections 80 protruding inward of the cylinder. Here, when the boss portion 21 is inserted more strongly, the tapered taper surfaces 24 on both sides of the tip of the tip bulging portion 22 and the inclined surfaces 84 inclined obliquely downward toward the inside of the cylinder of both the projections 80 are engaged with each other. And the slanted surfaces 84 of both projections 80 are respectively pushed by the tapered surfaces 24 on both sides of the tip bulging portion 22, so that both projections 80 face outward from the upper and lower hinges 82, 83. Bend. For this reason, the facing interval between the two protrusions 80 is widened,
The tip bulge 22 passes through this space.

The protruding edges 23 on both sides of the tip bulge 22 are
When passing under 80, both protrusions 80 will
With the elastic restoring force of 3, it snaps back. At this time,
As shown in FIG. 7, the locking stepped portions 81 of both the projections 80 are engaged with the overhanging edge 23 of the tip bulging portion 22 from above, so that the tip bulging portion 22 of the boss portion 21 is , The leg 60 of the clip 40 does not come out upward from the inside of the cylinder. Further, at this time, the lower surface of the component 20 contacts the upper surface of the flange portion 50 of the clip 40, thereby restricting the insertion limit of the distal end bulging portion 22 of the boss portion 21 and preventing the clip 40 from rattling.

Next, with the clip 40 attached to the boss portion 21 of the component 20, the clip 40 is inserted in alignment with the attachment hole 31 of the panel 30.

The clip 40 is inserted into the mounting hole 31 of the panel 30 from the leg portion 60. When the leg portion 60 is inserted, its first and second engaging pieces 7
1, 72 engage with the inner edge of the mounting hole 31, respectively.

Since the slope of the first engaging piece 71 is directed downward, the slope is in the lateral direction of the mounting hole 31 (in FIG. 1, A-A).
Direction)) and is bent toward the inside of the cylinder of the leg portion 60 by being pushed by both inner edges, and passes through the mounting hole 31. Then, when the engaging stepped portion 71a of the first engaging piece 71 passes under the mounting hole 31, as shown in FIG.
It snaps back on the back side of 30, and the engaging step 71a is attached to the mounting hole 3
The panel (30) is sandwiched between the lower surface of the flange (1) and the lower surface of the collar (50) from the front and back surfaces.

Further, since the second engagement piece 72 extends obliquely upward from the lower end of the side wall 62 of the leg portion 60, the inclined side surface thereof extends in the longitudinal direction of the mounting hole 31 (BB direction in FIG. 6). It is pushed by both inner edges facing each other and bends inward toward the outer surface of the side wall 62 to pass through the mounting hole 31. Then, when the engagement stepped portion 72a of the second engagement piece 72 passes under the mounting hole 31, the second engagement piece 72 snaps back on the back side of the panel 30 as shown in FIG. The engagement step portion 72a elastically engages with the lower edge portion of the mounting hole 31, and holds the panel 30 between the front surface and the back surface with the lower surface of the flange portion 50.

At this time, both the second engaging pieces 72 are not completely restored, and the engaging stepped portions 72a move in the longitudinal direction of the mounting hole 31 (6th
In the figure, the state of elastically contacting both inner edges facing each other in the BB direction) is maintained. Therefore, it is attempted to keep the deflection amounts of both the second engagement pieces 72 evenly on the left and right, and the leg portions 60 of the clip 40 are
A centering function that attempts to position the mounting hole 31 of the panel 30 at the center in the longitudinal direction (BB direction in FIG. 6) works.

Therefore, the leg portion 60 of the clip 40 is positioned substantially at the center of the attachment hole 31 of the panel 30 in the longitudinal direction (BB direction in FIG. 6).

Insert the clip 40 into the mounting hole of the panel 30 as described above.
Attaching to 31 attaches component 20 to the surface of panel 30 via clip 40.

On the other hand, when removing the component 20, attach the boss 21 to the panel 30.
It may be pulled out upward from the clip 40 attached to the attachment hole 31 of.

When the boss 21 is pulled upward, the protruding edge of the tip bulge 22
23 and the locking step portions 81 of both projections 80 of the clip 40 are engaged with each other, and the both are slantingly slanted, so that the locking step portions 81 of both projections 80 bulge at the tip. A force is exerted by being pushed by the projecting edge 23 of the portion 22 so as to push the both protruding portions 80 outward of the cylinder.

Therefore, both protrusions 80 are bent outward from the upper and lower hinges 82, 83 toward the outside of the cylinder, and the facing distance between the both protrusions 80 is widened. Goes upward through the opening 51.

Therefore, the component 20 can be removed from the panel 30 by pulling the boss portion 21 of the component 20 upward from the clip 40.

At this time, the clip 40 remains attached to the attachment hole 31 of the panel 30, and the component 20 can be attached to the panel 30 again by using the clip 40.

In the embodiment shown in the drawings, the scuff plate is described as an example of the component 20, but it can be used for pillar relations, trim functions and the like regardless of the interior / exterior parts of the automobile.

[Advantages of the Invention] As described above, according to the present invention, it is possible to provide an attachment device for an automobile part in which the boss portion can be inserted and removed relatively easily and a stable holding force can be obtained even when it is reused. it can.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show one embodiment of the present invention. FIG. 1 is an exploded sectional view of a main part of a mounting device, FIG. 2 is a front view of a clip, and FIG.
The figure is the same side view, FIG. 4 is the same plan view, FIG. 5 is the same bottom view,
FIG. 6 is an exploded cross-sectional view of another main part of the mounting device, and FIG. 7 is a cross-sectional view of the main part showing a mounting state. 10 …… Mounting device, 20 …… Parts, 21 …… Boss part, 23 …… Overhanging edge, 30 …… Panel, 31 …… Mounting hole, 40 …… Clip,
50 …… Collar part, 51 …… Opening part, 60 …… Leg part, 63, 64 …… Slit, 70 …… Locking part, 80 …… Projection part, 81 …… Locking step part, 82 …… Upper side Hinge part, 83 ... Lower hinge part.

Claims (1)

(57) [Scope of utility model registration request] Claim: What is claimed is: 1. A panel having a mounting hole, a plastic part having a boss portion integrally extending toward the mounting hole of the panel, and a boss portion of the part held inside the panel. A clip made of plastic to be mounted in the mounting hole, wherein the clip has an opening of a size into which the boss portion of the component fits, and a collar portion that is slightly larger than the mounting hole of the panel,
A leg portion that is hung vertically from the lower edge of the opening of the flange portion and has an outer shape that is slightly smaller than the mounting hole of the panel, and that protrudes from the outer surface of the leg portion and has a reduced diameter in the mounting hole. While passing, after passing through the mounting hole, it spreads out, and between the lower surface of the flange portion, the locking device for holding the panel from the front and back surfaces is integrally provided with a mounting device for parts of an automobile, In the middle of its height, the boss portion of the clip extends outwardly with its backs facing each other and forms a pair of overhanging edges that are spaced downward from the lower surface of the component and face each other. Includes at least a pair of protrusions that project toward the inside of the cylinder and that are engaged with both overhanging edges of the boss, and are located on the left and right sides of each protrusion. A pair of slits formed on the outer wall of the leg and the opening of the collar from the upper end of the protrusion. Of the upper hinge portion of the thin-walled continuously connected to the inner edge, the protrusion automotive parts mounting apparatus characterized by comprising a lower hinge part which is connected to the cylindrical outer wall of the leg from the lower end of.