JPS5836209B2 - Mounting structure for two objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a mounting structure suitable for assembling two objects, particularly a plastic mounting member to a metal member to be mounted. The present invention relates to a mounting structure that is extremely effective for assembling different plastic products to a metal body to which they are attached.

Plastic and metal have different coefficients of expansion with respect to heat, so when a plastic mounting member is completely fixed to a metal member to be attached via screws, bolts, etc., the plastic member will expand when it is affected by heat. or when contracting;
Because screws and bolts are completely fixed, they cannot expand or contract, which can lead to deformation or cracking.

For example, as shown in FIGS. 1 and 2, when attaching a plastic radiator grille 1 of an automobile to a metal vehicle body bracket 2, conventionally the common method was to attach it via screws 3. Ta.

Therefore, as mentioned above, when affected by heat, the plastic radiator grille 1 tries to extend in the length direction, but because it is completely fixed by the screws, the extension cannot be released, and the fixed part In between, as shown in FIG. 2, it deforms 1A downward or upward.

In addition, in the case of a completely fixed structure using screws or other means, if the screws become rusty over time and it becomes necessary to remove the grille, it will no longer be possible to remove the screws with a tool such as a screwdriver. , the screws would have to be cut using a tool such as a drill.

Furthermore, when installing the grille, as the size of the grill increases, the number of installation screws used increases, which increases the number of man-hours required for assembly, resulting in poor workability.

In view of the above, an object of the present invention is to provide a two-object mounting structure that can be easily attached to a metal member to be attached so as to absorb the amount of expansion and contraction due to heat of the plastic mounting member. do.

Another object of the present invention is not limited to the assembly of the above-mentioned plastic attachment member and metal attachment member, but also allows two objects to be attached very easily through a special clip and a fastening mechanism, and to avoid impact. The purpose is to provide a structure for attaching two objects that will not come off even if they come apart.

Still another object of the present invention is to provide a structure for attaching two objects with the same clip, regardless of the wall thickness of the attached member, when attaching the attaching member to the attached member.

Embodiments of the present invention will be described below based on illustrations, taking as an example a case in which a plastic radiator grill (mounting member) of an automobile is attached to a metal vehicle body bracket (mounted member), but the invention is not limited to these. It's not a thing.

An embodiment of the present invention is shown in FIGS. 3 to 10.

A locking body 10 made of the same material as the grille is integrally molded at a proper position on the back side of the opening of the radiator grille 1.

The locking body 10 has a locking hole 12 formed in the base part 11,
A pair of support plates 13 , 13 are provided on the left and right back surfaces of the locking hole 12 .
is provided with its surface perpendicular and protrudes across the gap 14.

The locking hole 12 has locking pieces 'f5, 15 on both sides of the approximate center, and the locking hole 12 has a square shape.

Further, the support plates 13, 13 have tapered tips, thick bases, and upper and lower stopper steps 16, 16.
At the same time, guide grooves 17, 17 are formed on the inner side of the center of the tip end toward the base side in the horizontal direction.

A radiator grille 1 with an integrated locking body 10 is attached to a vehicle body bracket 2 via a clip 20.

That is, the clip 20 is attached to the locking body 10 (support plate 13,
It has a vertically flat shape with a width that can be inserted into the gap 14 between the elastic head 21 and the elastic head 21, a pair of elastic wings 22, 22 that protrude vertically from the elastic head 21, and the base of the elastic head 21. It consists of an elastic head 21 and a pair of elastic arms 23 and 24 that protrude from the center in opposite directions.

The elastic head 21 has a pair of cantilever beams 2ib and 2lb that extend upward and downward toward the base side (elastic arm sections 23 and 24 side) from the tip of a central support shaft 21a shaped like a horizontal strip. It has an anchor shape that can be bent toward the central support shaft 21a against elastic force.

In the pair of elastic wing sections 22, 22, the elastic head 210 cantilever beams 2lb, 2lb are provided with free ends extending up and down to the original positions of the elastic arm sections 23, 24, respectively. It is curved toward the elastic head 21 side.

In addition, the elastic wing portions 22, 22 of the cantilever beams 21b, 21b
There is a thin engagement recess 21 on the side of the elastic head 21 at the protruding position.
c, 21C are formed.

Guide protrusions 25, 25 are formed on both sides of the central support shaft 21a of the elastic head 21 and can be fitted into the guide grooves 17, 17.

Further, the pair of elastic arms 23 and 24 are branched from the base of the support shaft 21a of the elastic head 21 and protrude vertically in parallel in a direction opposite to the elastic head 21.

The upper elastic arm portion 23 has locking recesses 26 on both sides of the middle portion and a claw portion 27 at the tip.

As shown in FIG. 3, the vehicle body bracket 2 is provided with a mounting hole 4 at a position behind the radiator grille 1 and facing the aforementioned locking body 10 integrated with the radiator grille 1. The mounting hole 4 can insert the support plate 13 of the locking body 10, and has a height H that is approximately the same as the height of the support plate 13, and a width W that is at least longer than the height H.

Next, the installation of this embodiment will be explained.

First, the clip 20 is inserted into the gap 14 of the locking body 10 integrated with the radiator grille 1 from its elastic arm portions 23 and 24 side.

At this time, the elastic arms 23 and 24 initially move while their tips are forcibly expanded along the tapered surfaces of the locking pieces 15 and '15, but the tips (claws 27) piece 15,
15, the enlarged tip elastically restores itself, and the locking recesses 26, 26 are fitted with the locking pieces 15, 15, and the guide protrusion 25 is fitted into the guide groove 17. In addition, with the free ends of the cantilever beams 21b and 2ib of the elastic head 21 in contact with the stopper steps 16 and 16, the clip 20 is firmly attached to the locking body 10 without being able to move back and forth.

Next, in this state, when the clip 200 elastic head 21 is forcibly pushed in while contacting the upper and lower lines of the mounting hole 4 of the vehicle body bracket 2, the elastic head 21 (cantilever beam 2lb
, 21b) is bent toward the central support shaft 21a and enters the mounting hole 4.

At this time, the tips of the elastic wings 22 and 220 come into contact with the front surface of the vehicle body bracket 2 and try to prevent the clip 20 from being pushed into the mounting hole 4. However, if further force is applied to push it into the mounting hole 4, Recessed portions 21 c , 21 that engage with the upper and lower lines of
c is engaged, and the elastic head 21 returns to its original shape.

In this way, the locking body 10 and the clip 20 are attached to the locking recess 2
1 c, 21 c and the attachment hole 4, and the attachment hole 4
The radiator grille 1 is locked to the locking body 10 so that it cannot move back and forth due to the pressure of the elastic wings 22, 22 from the front side, and the support plates 13, 13 are inserted into the mounting holes 4, and the radiator grille 1 is locked to the locking body 10 so that it cannot move up and down. The radiator grille 1 is securely held on the vehicle body bracket 2.

At this time, even if there is a difference in the thickness of the vehicle body bracket 2,
Since the bracket 2 is elastically clamped by the engagement recess 21c and the elastic wings 22, differences in the thickness of the bracket can be absorbed.

Further, since the guide protrusion 25 of the clip 20 is fitted into the guide groove 17 of the locking body 10, the clip 20 does not rattle even when subjected to a severe impact, and breakage of the clip 20 is prevented.

After attachment, the radiator grille 1 will no longer come off the vehicle body bracket 2 unless the elastic head 21 or the elastic arms 23 are forcibly deformed.

That is, when the radiator grille 1 is pulled forward, the claw portion 27 of the upper elastic arm portion 23 engages the locking pieces 15, 15.
Since the elastic arm portion 22 is locked at the center, the claw portion 27 will not be locked unless the elastic arm portion 22 is deformed upward under the tensile load or the claw portion 27 or the locking pieces 15, 15 are damaged. It will not come off from the pieces 15, 15.

Furthermore, when the radiator grille 1 is about to expand or contract in the longitudinal direction due to heat, the locking body 20 moves in the longitudinal direction together with the clip 7 inside the mounting hole 4 and can escape by the displaced position. It will not be deformed or damaged like when it is completely fixed due to etc.

If it is necessary to remove the radiator grille 1 and the vehicle body bracket 2, as shown in FIG.
4, by inserting a tool such as a flathead screwdriver 5 between them and turning it in either the left or right direction, the elastic arms 23 and 24 are expanded and the radiator grille 1 is pulled toward you, and each locking body 10 is The radiator grille 1 can be removed by releasing the engagement between the locking piece 15 and the locking recess 26.

The clip 20 remaining on the vehicle body bracket 2 is attached to the elastic head 2
1 inward and pull it out from the mounting hole 4, or
As shown in FIG. 9, if the clip 20 is rotated 90 degrees and laid down, the attachment hole 4 can be easily removed because the width W of the attachment hole 4 is larger than the vertical width of the elastic head 21. be able to.

When reattaching the radiator grille 1 to the vehicle body bracket 2, attach the clip 20 to the locking body 10 in the same manner as described above, or attach it after attaching the clip 20 to the attachment hole 4. The body 10 may be fitted into the clip 20.

Note that in the latter case, it is necessary to adjust the position of each clip 20 in advance.

In the above embodiment, as shown in FIG. 11, claw portions 27 may be provided on both of the elastic arm portions 23 and 24.
As shown in FIG. 12, the locking piece 15 may be provided only on one side, and the locking hole 12A may be formed into a U-shape.

Further, as shown in FIGS. 13 and 14, the clip 20A has one elastic arm 23 having a claw 27, the locking hole 12B of the locking body 10 is T-shaped, and the cantilever is 121b, 21.
The stopper 28 may be formed by protruding the free end of b toward the elastic arm side.

In addition, in FIGS. 11 to 13, the locking holes 12, 12A, 1
The shape indicated by the dotted line as 2B is the hole shape at the end position of the engaging body 100.

Since the two-object attachment structure of the present invention has the above-described configuration, it produces the following effects.

(a) Since the plastic mounting member is attached to the metal member to be attached using a clip means that takes into consideration the expansion and contraction effect caused by heat, there is no risk of deformation or damage due to heat.

(b) The mounting member can be attached to and removed from the attached member with a single touch, and the fixing force after installation is no different from that when using metal screws, and unlike metal screws, it will not rust and become unremovable. Moreover, it will not cause any damage to your beauty.

(c) Since the member to be attached is elastically clamped between the engagement recess and the elastic wings, a certain degree of difference in thickness of the member to be attached can be absorbed by the same clip.

[Brief explanation of drawings]

Figure 1 is a sectional view showing the conventional mounting structure of a plastic radiator grill on a metal bracket, and Figure 2 is a
3 is an exploded perspective view of the radiator grille and the vehicle body bracket. Figure 4 is an exploded rear perspective view showing an embodiment of the present invention. Figure 5 is a partially cutaway front perspective view of the same body. Figure 6 is a sectional view of the installed state, Figure 7 is a perspective view of the clip and the base of the retaining body, Figure 8 is a sectional view taken along line B-B in Figure 6, and Figure 9 is a sectional view of Figure 4. FIG. 10 is an enlarged side view of the clip shown in FIG. 4, FIG. 11 is a perspective view of a clip and a locking body showing another embodiment of the present invention, and FIG. 12 is a perspective view of the clip shown in FIG. 4. FIG. 13 is a perspective view of a clip and a locking body showing still another embodiment; FIG. 13 is a perspective view of a clip and a locking body showing still another embodiment;
FIG. 14 is an enlarged side view of a clip showing another embodiment similar to the clip of FIG. 13; 1...Radiator grill (mounting member), 2...
...Vehicle body bracket (mounted member), 4...
- Mounting hole, 10... Locking body, 11...
・Base part, 12, 12A, 12B...Lock hole, 1
4... Gap, 15... Locking piece, 16.
...Stopper step, 20...Clip,
21...Elastic head, 21a...Central support shaft, 2lb...Cantilever beam, 21c...
Engagement recess, 22... Elastic wing section, 23, 24.
..... Elastic arm portion, 26 ..... Locking recessed portion, 27
・・・・・・Claw part.

Claims (1)

[Scope of Claims] 1. Attachment of two objects, characterized in that the following attachment member integrated with the locking body is attached to the attachment member provided with the oblong rectangular attachment hole via the following clip. structure. (a) The locking body has a locking hole formed in its base, and a pair of support plates protrudes from the rear surfaces of both left and right sides of the locking hole with their surfaces perpendicular to each other with a gap between them. The locking hole has a locking piece on both sides or one side of the inside, and
The pair of support plates have tapered tip portions and have stopper step portions at the top and bottom. (b) The clip has a width that allows it to be inserted between the support plates, and includes an elastic head, a pair of elastic wings that protrude vertically from the elastic head, and an elastic head extending from the center of the base of the elastic head. and a pair or one elastic arm that protrudes in opposite directions. The elastic head has a pair of cantilever beams that extend upward and downward toward the elastic arm from the tip of the central support shaft extending in the horizontal direction, and has an anchor shape that can be bent toward the central support shaft. It is. The pair of elastic wing portions also protrudes from free ends where the cantilever of the elastic head extends to the base of the elastic arm portion,
The tips are each curved toward the elastic head. Furthermore, engagement recesses are formed on the elastic head sides of the protruding positions of the elastic wing portions of the pair of cantilever beams, respectively. At least one of the elastic arms has a locking recess in its intermediate portion. (e) In the attached state, the upper and lower ends of the attachment hole are elastically clamped between the engagement recess and the elastic wing, and the clip is attached to the attachment hole without being able to move back and forth; Further, the support plate is inserted into the mounting hole, the mounting member is supported by the locking body so as not to be able to move up and down, and the locking recess of the elastic arm is fitted with the locking piece. Then, the clip is locked to the locking body in a state in which it is sandwiched between the support plates and cannot be moved back and forth.