JPH1029472A - External package component for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an external package component for a vehicle in which a crushing sound generated when an obstacle strikes against the vehicle can be restrained. SOLUTION: A plurality of projections 14 are integrally formed at a bottom surface D2 of a locker mall 1. With such an arrangement as above, when a small stone, for example, strikes against the bottom surface D2 of the locker mall 11 during running of the vehicle, the projections 14 are deformed by the impact when the small stone collide with the vehicle. That is, the projections 14 are deformed to cause striking action when the small stone strikes against the vehicle to be absorbed. As a result, occurrence of striking sound when the small stone strikes against the vehicle is substantially restrained, the striking sound is scarcely transmitted to a compartment and so it is possible to prevent uncomfortable feeling from being applied to a driver as well as occupants.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to exterior parts for automobiles such as rocker moldings made of synthetic resin.

[0002]

2. Description of the Related Art At present, many resin exterior parts are mounted on automobiles. One such resin product is, for example, Rocka Mall. This Rocka Mall is
It is mounted on a rocker panel located at the lower part of the side of the body for the purpose of preventing the body of the automobile from being damaged, improving aerodynamic characteristics, and realizing a characteristic design.

As shown in FIGS. 7 and 8, a conventional rocker molding 81 is formed of a synthetic resin such as polypropylene and has a substantially L-shaped cross section. In the rocker molding 81, on the back surface of the design surface D exposed to the outside, each mounting seat 83 is integrally formed at a place where it needs to be fixed to the rocker panel 82. The rocker panel 82 is attached to the lower portion of the side of the body B of the automobile,
Is attached so as to cover the side and bottom surfaces of the rocker panel 82 via clips 84.

[0004]

However, the rocker molding 81 according to the prior art has the following problems.

That is, when a foreign object such as pebbles collides with the rocker molding 81 (especially the lower surface of the rocker molding 81) while the automobile is running, the impact sound is transmitted as abnormal noise to the room,
There has been a problem that the driver and the passenger are uncomfortable. To solve this problem, it is conceivable to increase the thickness of the bottom wall of the rocker molding 81, but in this case, the transmission of the impact sound cannot be prevented unless the thickness of the bottom wall is considerably increased. . Therefore, a large amount of material is used and the weight of the molding 81 becomes large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a first object of the present invention is to provide an automobile exterior component capable of suppressing an impact sound generated when a foreign object collides. is there.

A second object of the present invention is to provide an automobile exterior component capable of suppressing an impact sound generated when a foreign object collides without significantly increasing the material and weight of the exterior component.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, it is possible to suppress the generation of an impact sound when a foreign object collides with an exterior component mounted on a body. The gist of the present invention is to provide an impact sound suppressing means.

According to a second aspect of the present invention, in the first aspect of the invention, the impact sound suppressing means is a plurality of protrusions integrally formed on an externally exposed surface of the exterior component. I do.

According to a third aspect of the present invention, in the first aspect of the invention, the gist is that the impact sound suppressing means is a hollow portion formed by hollowing an exterior component. According to a fourth aspect of the present invention, in the third aspect, a sound absorbing material is filled in a hollow portion of the exterior component.

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, the outline is that a through hole communicating between the hollow portion and the outside is formed in the exterior component. I do.

In the invention according to claim 6, in the invention according to any one of claims 3 to 5, the exterior component is formed of a plate-like member, and connects both ends of the plate-like member. Thus, the gist is that the hollow portion is formed.

In the first aspect of the present invention, when a foreign object such as pebbles collides with the exterior component, the impact sound at the time of the collision is suppressed by the impact sound suppressing means.

According to the second aspect of the invention, in addition to the operation of the first aspect, when a foreign object collides with a plurality of projections integrally formed on the externally exposed surface of the exterior component,
The projection is deformed by the impact at the time of collision of the foreign matter. Due to the deformation of the projection, the impact energy at the time of the collision of the foreign matter is absorbed, and the impact sound is suppressed.

According to the third aspect of the present invention, in addition to the function of the first aspect of the present invention, since the hollow part is formed in the exterior part, when a foreign object collides with the exterior part, the hollow part is formed. Thus, transmission of the impact sound to the room is prevented (suppressed).

According to the fourth aspect of the present invention, in addition to the function of the third aspect of the present invention, the sound absorbing material filled in the hollow portion of the exterior component absorbs an impact sound when a foreign object collides. .

According to a fifth aspect of the present invention, in addition to the function of the third or fourth aspect of the present invention, a through-hole is formed in the exterior part for communicating the hollow portion with the outside. Therefore, it is possible to prevent the impact sound from being trapped in the hollow portion.

According to a sixth aspect of the present invention, in addition to the function of the third aspect of the present invention, a hollow portion is formed by connecting both ends of the plate member. Therefore, molding of the exterior component can be performed by inexpensive extrusion molding.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 3, the rocker molding 11 is made of an elastic synthetic resin such as polypropylene and has an L-shaped cross section. A mounting seat 13 is formed integrally with a portion of the design surface D <b> 1 exposed to the outside on a portion that needs to be fixed to the rocker panel 12. As shown in FIG. 1 to FIG. 3, a plurality of protrusions 14 as impact sound suppressing means are integrally formed on the bottom surface D2 of the rocker molding 11. The protrusion 14 is formed in a columnar shape,
Its diameter is about 1 mm to 2 mm and its length is about 5 mm. The rocker molding 11 is manufactured by injection molding (or extrusion molding), and the protrusions 14 are integrally formed when the rocker molding 11 is molded.

The rocker panel 12 is attached to the lower part of the side of the body B. The rocker molding 11 is attached so as to cover the side surface and the bottom surface of the rocker panel 12 using the clips 15 for connecting the respective mounting seats 13 and the rocker panel 12 respectively.

In the present embodiment, the following effects can be obtained by configuring the rocker molding 11 as described above. (1) A plurality of protrusions 14 are provided on the bottom surface D2 of the rocker molding 11.
Was integrally formed. Thereby, for example, when a pebble collides with the bottom surface D2 of the rocker mall 11 while the vehicle is running,
The projection 14 is deformed by the impact at the time of the pebble collision. That is, the deformation of the projections 14 absorbs the impact of the pebbles at the time of collision.

As a result, the generation of the impact sound at the time of the collision of the pebbles is largely suppressed, and the impact sound is hardly transmitted to the room, so that it is possible to prevent the driver and the fellow passengers from feeling uncomfortable.

(2) Since the projections 14 for suppressing the generation of the impact sound are integrally formed on the bottom surface of the rocker molding 11, the impact sound suppressing means is separately attached to the bottom surface of the rocker molding 11 ( For example, the rocker molding 11 can be manufactured at a lower cost than a conventional rocker molding having a flat bottom surface and a rubber plate attached to the bottom surface.

(3) Since the generation of the impact sound can be surely suppressed without making the entire bottom surface D2 of the rocker molding 11 thick, it is possible to prevent an increase in the material cost and an increase in the weight of the rocker molding 11. .

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 4 and FIG.
Has a substantially triangular cylindrical cross section. That is, the rocker molding 21 of the present embodiment has three surfaces of the design surface E1, the bottom surface E2, and the connection surface E3, and the hollow portion 22 is formed in a portion surrounded by each of the surfaces E1 to E3. A through hole 24 that connects the hollow portion 22 to the outside is formed in a connection surface E3 of the rocker molding 21 facing the rocker panel 23.

FIG. 6 is a development view of the rocker molding 21. As shown in the figure, the rocker molding 21 is formed in an approximately L-shaped cross section by extrusion molding. A connecting recess 25 is formed at one end of the connecting recess 25 so that the opening direction is perpendicular to the design surface E1. An engagement hole 26 is formed in the connection recess 25. At the other end of the rocker molding 21, an engagement projection 27 whose projection direction is orthogonal to the connection surface E3 is integrally formed. At the boundary between the bottom surface E2 and the connection surface E3, a concave hinge portion 28 extending in the longitudinal direction and having a smaller thickness than both surfaces E2 and E3 is formed.

When the rocker molding 21 is changed from the state shown in FIG. 6 to the state shown in FIG. 5, the connecting surface E3 is bent and raised via the hinge portion 28, and the engaging projection 27 is inserted into the connecting concave portion 25.
The engaging projection 27 is locked in the locking hole 26. As a result, the rocker molding 21 is held in the shape shown in FIG.
A hollow portion 22 is formed in the rocker molding 21. The joint portion E3 is bent and raised by the hinge portion 28 at the bottom surface E2.
And since it is thinner than the thickness of the connection surface E3, it can be easily performed.

As shown in FIG. 4, in this embodiment, as in the first embodiment, the rocker molding 21 is connected to the rocker panel 23 by the clip 29 and the connecting surface E.
3 is carried out through the mounting seat 30 formed in the third member. The hollow portion 22 of the rocker molding 21 is filled with an amorphous sound absorbing material 31. This sound absorbing material 31 is a urethane foam,
Alternatively, the sound absorbing member 31 is made of a soft rubber material, and the size of the sound absorbing member 31 is larger than the diameter of the through hole 24. Therefore, the sound absorbing material 31 does not spill out of the through hole 24 to the outside.

In the present embodiment, the following effects can be obtained by configuring the rocker molding 21 as described above. (1) Since the hollow portion 22 is formed in the rocker molding 21, even if a foreign matter such as pebbles collides with the rocker molding 21, the transmission of the impact sound generated at the time of the foreign material collision is prevented (suppressed) by the hollow portion 22. Thereby, transmission of the impact sound to the room can be prevented, and discomfort to the driver and the passenger can be prevented.

Further, in the present embodiment, the surface area of the rocker molding 21 is larger than that of the conventional and the first embodiment by the amount of the hollow portion 22 formed, but the material used does not change much. Therefore, in the present embodiment, the rocker mall 2
(1) The generation of the impact sound can be suppressed without changing the used material and the weight so much.

(2) Since the hollow portion 22 is filled with the sound absorbing material 31, the impact sound when a foreign object collides with the rocker molding 21 can be absorbed, so that the transmission of the impact sound to the room can be surely prevented. .

(3) A through hole 24 is formed in the connecting surface E3 that is not exposed to the outside of the rocker molding 21. Thereby, even if a foreign matter such as a pebble collides with the rocker molding 21, it is possible to prevent the impact sound from being muffled in the hollow portion 22. As a result, transmission of the impact sound to the room can be more reliably prevented.

(4) The hollow portion 22 is formed by connecting both ends (the end of the design surface E1 and the end of the connection surface E3) of the plate-like member constituting the rocker molding 21. Thereby, molding of the rocker molding 21 becomes easy. That is, when the hollow portion 22 is formed at the same time as the molding, it is difficult to form the hollow portion 22 by extrusion molding. Therefore, an expensive molding method such as blow molding must be used. However, as described above, in the present embodiment, since the rocker molding 21 can be formed by inexpensive extrusion, the cost can be reduced.

The present invention can also be configured as follows. (1) In the first embodiment, the protrusions 14 are integrally formed on the bottom surface D1 of the rocker molding 11 as the external equipment.
This may be configured separately. Alternatively, a separate elastic sheet or brush-like linear projection may be attached to the rocker molding having a flat bottom surface to constitute the impact sound suppressing means.

(2) In the second embodiment, the rocker molding 21 as the exterior component is formed with the through-hole 24 for preventing the build-up of the impact sound. However, the through-hole 24 may be omitted to be embodied.

(3) In the second embodiment, the sound absorbing material 31 is filled in the hollow portion 22 of the rocker molding 21 as an exterior component. However, the sound absorbing material 31 may be embodied without being filled.

(4) In the second embodiment, the rocker molding 21 as an exterior part is formed by extrusion, but may be formed by parison molding or injection molding. (5) In the above embodiments, the exterior parts are embodied in the rocker moldings 11 and 21. However, the exterior parts may be embodied in exterior parts such as bumper spoilers and side skirts.

[0039]

As described above in detail, according to the first aspect of the present invention, even if pebbles or the like collide with the exterior component, the generation of the impact sound at the time of the collision is suppressed by the impact sound suppressing means. Therefore, discomfort to the driver and the passenger due to the impact sound can be reduced.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in (1), since the deformation of the projections absorbs the impact energy at the time of the collision of the foreign object and suppresses the generation of the impact sound, the discomfort to the driver and the passenger due to the impact sound can be further reduced. .

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, the transmission of the impact sound into the room can be prevented (suppressed) by the hollow portion, so that the driver and the passenger are caused by the impact sound. Discomfort to people can also be reduced.

According to the invention set forth in claim 4, according to claim 3,
In addition to the effects of the invention described in above, the sound absorbing material filled in the hollow portion of the exterior component absorbs the impact sound when a foreign object collides, so that it is possible to surely reduce discomfort to the driver and the passenger .

According to the invention described in claim 5, according to claim 3,
Or, in addition to the effect of the invention according to claim 4, since the exterior component is formed with a through-hole communicating the hollow portion and the outside, it is possible to prevent the impact sound from being trapped in the hollow portion, and The transmission of the impact sound can be more reliably prevented.

According to the invention of claim 6, according to claim 3,
In addition to the effects of the invention described in any one of claims 5 to 5, since the exterior component can be formed by inexpensive extrusion, cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rocker molding according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the rocker molding according to the first embodiment.

FIG. 3 is a front sectional view of the rocker panel and the rocker molding according to the first embodiment.

FIG. 4 is a front sectional view of a rocker panel and a rocker molding according to a second embodiment.

FIG. 5 is a perspective view of a rocker molding according to a second embodiment.

FIG. 6 is a development view of a rocker molding according to the second embodiment.

FIG. 7 is a perspective view of a conventional rocker molding.

FIG. 8 is a front sectional view of a conventional rocker panel and a rocker molding.

[Explanation of symbols]

B: body, 11, 21 ... rocker molding as exterior parts, 14 ... protrusions as impact sound suppressing means, 22 ... hollow portions as impact sound suppressing means, 31 ... sound absorbing material as impact sound suppressing means, 24 ... Through holes.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takehiko Shiraki 1 Ochiai Nagahata, Kasuga-machi, Nishi-Kasugai-gun, Aichi Prefecture Toyota Gosei Co., Ltd. Toyoda Gosei Co., Ltd. (72) Inventor Yasuhiro Teramoto 1 Ochiai, Nagahata, Kasuga-machi, Nishikasugai-gun, Aichi Prefecture Toyoda Gosei Co., Ltd. Synthetic Co., Ltd. (72) Inventor Seiichi Asaka Kaichi, Nishi-Kasugai-gun, Aichi Prefecture

Claims (6)

[Claims] An exterior component (1) mounted on a body (B)
(1), (21), an exterior component for an automobile, comprising an impact sound suppressing means (14, 22, 31) for suppressing the generation of an impact sound when a foreign object collides from the outside. 2. The method according to claim 1, wherein the impact sound suppressing unit includes an exterior component (1).
A plurality of protrusions (1) integrally formed on the outer exposed surface of (1).
The automotive exterior component according to claim 1, wherein the component is (4). 3. An exterior part (2) comprising:
The automotive exterior part according to claim 1, wherein the exterior part is a hollow part (22) formed by hollowing out (1). 4. A hollow part (22) of the exterior part (21).
The exterior part for an automobile according to claim 3, wherein a sound absorbing material (31) is filled in the exterior part. 5. A hollow part (2) is provided in said exterior part (21).
The exterior part for an automobile according to claim 3 or 4, wherein a through hole (24) communicating between (2) and the outside is formed. 6. The hollow part (22) is formed by forming the exterior part (21) from a plate-like member, and connecting both ends of the plate-like member to form the hollow part (22). Automotive exterior parts according to any of the above.