JP3386706B2 - Mounting structure of shock absorbing pad for interior parts - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing pad which effectively absorbs a shock when a vehicle is laterally applied and secures occupant safety such as a pillar trim, a door trim, a rear side trim. The present invention relates to a structure for mounting a shock absorbing pad in an interior part that is attached to the interior part.

[0002]

2. Description of the Related Art Conventionally, as a safety measure for a vehicle, when a side impact such as a side collision is applied to the side of the vehicle, a shock absorbing pad is provided in the side wall panel and the side wall panel to effectively absorb the impact. It is installed between the interior parts and

For example, a mounting structure of a shock absorbing pad installed in a center pillar installed in a side wall panel of a vehicle will be described as an example. As shown in FIG. A pillar trim lower 1 and a center pillar trim upper 2 are installed in the upper part, respectively. The center pillar trim lower 1 and the center pillar trim upper 2 are made of an injection molded body of a synthetic resin such as PP resin.

On the back side of the center pillar trim lower 1, a shock absorbing pad 3 made of hard polyurethane foam or the like is attached in correspondence with the side collision area A. Normally, as shown in FIG. Lower 1
Mounting bosses 4 are provided on the upper and lower sides of the rear surface of the shock absorbing pad 3 while the mounting pieces 5 having mounting holes 5a are formed on the upper and lower sides of the shock absorbing pad 3 so as to project outward. Adhesive fixing is performed with the system adhesive a.

That is, as shown in FIG. 8, a hot melt adhesive a is applied to the back surface side of the center pillar trim lower 1 corresponding to the side collision area A, and the impact absorbing pad 3 is set on the application surface. At this time, the mounting boss 4 of the center pillar trim lower 1 is attached to the mounting piece 5 of the shock absorbing pad 3.
Of the impact-absorbing pad 3 by inserting the hot melt adhesive a into the mounting hole 5a of the
Is firmly attached to a predetermined position on the back surface of the center pillar trim lower 1.

[0006]

However, in the conventional mounting structure for the shock absorbing pad 3, if a shock is applied from the side, the mounting boss 4 may be broken to form a sharp edge. Therefore, in consideration of safety,
The mounting boss 4 can be set only outside the side collision area A. Therefore, there are drawbacks that the shock absorbing pad 3 becomes large in size, material cost increases, and weight increases.

Further, due to the setting of the mounting boss 4, sink marks are easily generated on the surface of the center pillar trim lower 1 and the appearance of the room is deteriorated, and the shock absorbing pad 3 is adhered to a predetermined position on the back surface of the center pillar trim lower 1. It is fixed, and in particular, an expensive hot-melt adhesive a is used, so that the cost is further increased, and the number of man-hours such as the coating process and the drying process of the hot-melt adhesive a is large, and the working environment is high. It has been pointed out that various inconveniences are not preferable.

The present invention has been made in view of the above circumstances, and in the mounting structure of the shock absorbing pad installed on the back surface of the interior component installed in the side wall panel, the adhesive fixing using the mounting boss is abolished. By doing so, the impact absorbing pad can be made compact, the material cost can be reduced and the weight reduction can be promoted, and the appearance of the interior parts such as sink marks does not occur, and the adhesive application process It is an object of the present invention to provide a structure for mounting a shock absorbing pad in an interior part, which can eliminate the drying step and the like and can significantly simplify the mounting man-hours.

[0009]

In order to achieve the above object, the invention according to claim 1 of the present application is mounted on a predetermined position on the back surface of an interior component installed in a side wall panel of a vehicle, and a side impact is applied. In the mounting structure of the shock absorbing pad in the interior part for mounting the shock absorbing pad capable of absorbing a shock by being deformed or crushed by the while Ru is provided an engagement portion to the clip fitting seat for mounting a clip for attaching the shock absorbing pad
A housing portion such as a through hole or a recess for housing the above clip mounting seat
Is attached to the inner wall of the housing and is attached to the locking part of the clip mounting seat.
Is provided, and the shock absorbing pad is engaged and fixed by the engaging claw and the engaging portion.

Further, the invention according to claim 2 of the present application is characterized in that the locking claw is provided with a guide slanted portion in order to provide insertion guideability of the shock absorbing pad.

Further, the invention according to claim 3 of the present application is characterized in that the clip mounting seat has a shock absorbing structure which is easily buckled or deformed when a load is applied to the side of the vehicle. And

Here, the interior parts can be applied to a center pillar trim, a door trim, a rear corner trim, etc., as long as they are installed in a side wall panel of a vehicle and installed in a portion where an occupant's body can easily touch.

The interior component is made of a resin molded body which is molded into a desired shape by injection molding or mold press molding of synthetic resin such as PP resin, and is mounted on a side wall panel of a vehicle through a clip. To be done. on the other hand,
The shock-absorbing pad is preferably a molded body of hard polyurethane foam or the like, and is provided with a mounting surface having a shape that matches the inner surface shape of the interior component and a panel abutting protrusion that abuts the side wall panel.

Furthermore, the shock absorbing pad is engaged by the engaging claws provided on the back side of the interior parts and the engaging portions of the clip mounting seat. As the above-mentioned locking claw, in consideration of workability of mounting the shock absorbing pad, it is preferable to provide a guide inclined portion having a triangular cross section, and one or two corners of one edge of the shock absorbing pad. Hold the department in a locked state. On the other hand, the clip mounting seat may be made of metal or resin as long as it has a locking portion that locks the other side edge of the shock absorbing pad. It is preferable to form a stop portion and a through hole or a recess for accommodating the clip mounting seat in the shock absorbing pad, and to provide a projection for inserting into the locking portion of the clip mounting seat in the through hole or the recess.

It is preferable that this clip mounting seat adopts a shock absorbing structure, so that the clip mounting seat can be deformed, such as a thin portion or an offset.
A structure that induces breakage is preferable.

As is apparent from the above structure, the impact absorbing pad is fixedly fixed by both the locking claw formed on the back surface of the interior part and the locking portion of the clip mounting seat fixed at a predetermined position on the back surface. , The conventional mounting boss can be eliminated, and the shape of the shock absorbing pad can be made compact without being restricted by the mounting boss.

Further, since the shock absorbing pad is structured such that it is engaged and fixed by the engaging claw and the engaging portion of the clip mounting seat, the conventional hot melt adhesive can be eliminated, and the hot melt adhesive applying step and drying can be carried out. The process etc. can be abolished.

Further, since the locking claw formed on the rear edge of the interior component is provided with the guide inclined portion, one edge portion of the shock absorbing pad is slidably contacted along the guide inclined portion. This makes it possible to easily locate one edge portion of the shock absorbing pad on the back surface side of the interior component.

If the clip mounting seat itself for engaging the other side of the shock absorbing pad has a thin wall structure, an offset structure, etc., the clip mounting seat is easily deformed or broken by an external impact load. It becomes easy to induce deformation and crushing of the shock absorbing pad.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a structure for mounting an impact absorbing pad in an interior part according to the present invention will be described below in detail with reference to the accompanying drawings.

1 to 5 show the present invention applied to an embodiment in which a shock absorbing pad is attached to a center pillar trim lower. FIG. 1 is an external view showing the center pillar trim, and FIG. 2 is a center pillar trim lower in the center pillar trim. FIG. 3 is a cross-sectional view showing a main part, FIG. 3 is an explanatory view showing a state where the shock absorbing pad is attached to the center pillar trim lower, and FIG. 4 is a plan view seen from the back side showing a state where the shock absorbing pad is attached to the center pillar trim lower. FIG. 5 is an explanatory view showing the operation of a modified example of the clip mounting seat used in the present invention.

1 and 2, the center pillar trim is composed of a lower center pillar trim lower 10 and an upper center pillar trim upper 20 divided into upper and lower parts, and the center pillar trim lower 10 and the center pillar trim upper 20 are , Molded into a required shape by injection molding of polypropylene resin.

An adjustment elongated hole 21 is formed in the center of the center pillar trim upper 20, and the center pillar trim lower 10 and the center pillar trim upper 2 are provided.
A slide plate 24, which supports a webbing 23 of the seat belt pulled out from the pull-out port 22 between 0 and 0, is installed in the adjustment elongated hole 21 so as to be vertically movable. On the other hand, the center pillar trim lower 10 has a seat belt retractor 25 built in at the base side, and a clip mounting seat 40 is attached to the back surface of the center pillar trim lower 10.
A resin clip 31 is attached to the clip mounting seat 40, and the resin clip 31 is attached to the center pillar panel 30.
The center pillar trim lower 10 is installed in the center pillar panel 30 by being press-fitted into the mounting hole 32 of the.

By the way, according to the present invention, the shock absorbing pad 50 is provided on the inner surface of the side collision area A of the center pillar trim lower 10.
It makes it possible to easily and inexpensively install
As shown in FIGS. 2 and 3, the shock absorbing pad 50 includes a curved mounting surface 51 that conforms to the inner surface shape of the center pillar trim lower 10, and has a panel contacting protrusion that faces the center pillar panel 30. The portion 52 is formed to project, and the shock absorbing pad 50 is formed of a molded body made of rigid polyurethane foam,
Instead of the conventional hot melt adhesive adhesive fixing structure,
It is characterized by adopting a fastening and fixing structure.

That is, the center pillar trim lower 10
In the side collision area A, the locking claw 11 is formed on the back surface edge portion. In the present embodiment, the locking claw 11 has a triangular shape, and includes the guide inclined portion 12 and the engaging portion 13 that locks the one side edge portion of the shock absorbing pad 50, but the shape thereof is particularly limited. do not do.

The engaging claw 11 fixes and fixes the corner portion 53 at one edge of the shock absorbing pad 50, and the clip mounting seat 40 fixes the other side of the shock absorbing pad 50. That is, the clip mounting seat 40 is made of a thin metal plate in the present embodiment, mounting flanges 41 are formed on both sides, and a mounting seat surface 42 is set higher in the center, and the resin clip 3 is attached to the mounting seat surface 42.
A clip locking hole 43 for mounting 1 is set.

Then, a mounting boss 14 having a relatively low height is provided on the back side of the center pillar trim lower 10 in a mounting hole 44 formed in the mounting flanges 41 on both sides, and the mounting boss 14 is mounted. The clip attachment seat 40 is attached to a predetermined position on the back surface of the center pillar trim lower 10 by inserting the clip attachment seat 40 into the hole 44 and crimping the tip by ultrasonic waves or heat welding. The clip mounting seat 40 is formed with a locking vertical wall 45 extending downward so as to be continuous with the mounting seat surface 42, and the locking portion 46 cut out in the locking vertical wall 45 is formed. The other side of the shock absorbing pad 50 is attached.

A through hole 54 for accommodating the clip mounting seat 40 is formed on the other side of the shock absorbing pad 50. The through hole 54 is further engaged with the engaging portion 46 of the clip mounting seat 40. A protrusion 55 to be attached is provided in a protruding manner. Therefore,
To attach the shock absorbing pad 50 to a predetermined position on the inner surface of the center pillar trim lower 10, one side edge of the shock absorbing pad 50 is slidably contacted along the guide inclined portion 12 of the locking claw 11 to lock the locking claw 11. The engaging portion 13 of the shock absorbing pad 50 is engaged with the corner portion 53 at one edge of the shock absorbing pad 50, and the other side of the shock absorbing pad 50 is positioned so that the clip mounting seat 40 is housed in the through hole 54. Then, the projection 55 of the shock absorbing pad 50 is elastically fitted into the locking portion 46 of the vertical wall 45 for locking of the clip mounting seat 40, so that the locking pawl 11 and the clip mounting seat 40 can be used to absorb the shock absorbing pad. The 50 can be firmly locked and fixed.

As described above, according to the mounting structure of the shock absorbing pad 50 according to the present invention, the application of the hot melt adhesive, like the conventional adhesive fixing of the hot melt adhesive using the mounting boss, Drying process can be omitted, expensive hot-melt adhesive is not required, and molding defects such as sink marks on the product surface caused by the mounting boss can be prevented.
There is an advantage that a good appearance and design can be obtained.

Further, it is not necessary to enlarge the outer shape of the shock absorbing pad 50 due to the restriction from the mounting boss, the shock absorbing pad 50 can be made compact, and the material cost and the weight of the product can be reduced. be able to.

Further, when a hot melt adhesive is used, a lot of work space is required for the adhesive application process and the drying process, and a large amount of equipment such as exhaust equipment is required to maintain a good working environment. However, according to the mounting structure of the shock absorbing pad 50 according to the present invention, since the locking claw 11 and the clip mounting seat 40 can be used to lock and fix with one touch, the number of working steps can be shortened. It is possible and does not require large-scale equipment, and is preferable in terms of working environment.

In order for the present invention to function effectively, it is preferable that the clip mounting seat 40 has a shock absorbing structure as shown in FIG. That is, this clip mounting seat 40
When the impact is applied from the outside, the impact absorption pad 50
In order to promote the deformation and crushing of the clip, the one vertical wall 47a is set to be inclined compared to the other vertical wall 47b, so that the clip mounting seat 40 is set to the inclined vertical wall when an impact is applied. 47a is easily deformed, so that the clip mounting seat 40 does not hinder the deformation and crushing of the shock absorbing pad 50.

Further, as a modified example of the clip mounting seat 40, although not shown, a broken portion is provided in a part to facilitate breaking, or when a resin clip mounting seat is used, a thin wall portion or the like is provided. Alternatively, a structure that promotes breakage and deformation may be adopted.

Although the embodiment described above has a structure in which the shock absorbing pad 50 is attached to the inner surface side of the center pillar trim lower 10, the invention is not limited to the center pillar trim lower 10 and may be a vehicle door trim or a rear corner trim. It does not depart from the spirit of the present invention to be applied to an interior part installed in a side wall panel of the vehicle and installed in a place where an occupant's body can easily touch.

[0035]

As described above, the structure for mounting the shock absorbing pad in the interior component according to the present invention has the following special effects.

(1) Since the invention according to claim 1 has a structure in which the shock absorbing pad is engaged by the engaging claw formed on the rear edge of the interior part and the engaging part of the clip mounting seat.
Compared to the conventional adhesive fixing structure of hot melt adhesive using the mounting boss, the application process of hot melt adhesive,
The drying process can be eliminated, and the impact absorbing pad can be attached with one touch, which has the effect of significantly improving the attachment workability.

(2) According to the first aspect of the invention, since the shock absorbing pad is attached by the engaging claw formed on the rear edge of the interior part and the engaging part of the clip mounting seat. The effect is that the conventional mounting boss can be eliminated, molding defects such as surface sinks caused by the mounting boss can be eliminated, and good appearance design can be ensured.

(3) According to the invention described in claim 1, since the shock absorbing pad is engaged by the engaging claws formed on the rear edge of the interior part and the engaging portions of the clip mounting seat. The shock absorbing pad can be made compact without being restricted by the mounting boss, the hot melt adhesive can be abolished, and the material cost can be greatly saved, resulting in cost reduction. It has an effect that it can contribute to weight reduction.

(4) According to the second aspect of the present invention, since the locking claw for engaging the one side edge of the shock absorbing pad has the inclined portion for guide, the one side edge of the shock absorbing pad. Can be smoothly attached to the locking claw, and the workability of attachment can be further improved.

(5) According to the third aspect of the invention, the clip mounting seat for engaging the other side of the shock absorbing pad has a shock absorbing structure which is deformed or broken by an external shock. Since it is easily deformed or broken by a side impact such as a side collision, it has an effect that a good impact absorbing function can be obtained without inhibiting deformation and crushing of the impact absorbing pad.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a center pillar trim to which a shock absorbing pad mounting structure according to the present invention is applied.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an exploded perspective view showing an embodiment of a shock absorbing pad mounting structure, showing a state in which the shock absorbing pad is mounted on the inner surface of the center pillar trim lower.

FIG. 4 is a plan view showing a center pillar trim lower as viewed from the back side, showing an embodiment of a shock absorbing pad mounting structure according to the present invention.

FIG. 5 is an explanatory view showing an operation of a modified form of the clip mounting seat used in the mounting structure of the shock absorbing pad according to the present invention.

FIG. 6 is a front view showing a conventional center pillar trim.

FIG. 7 is an explanatory diagram showing a conventional shock absorbing pad mounting structure.

FIG. 8 is a cross-sectional view showing a work of mounting a conventional shock absorbing pad.

[Explanation of symbols]

10 Center pillar trim lower 11 locking claws 12 Guide ramp 13 Locking department 20 center pillar trim upper 30 center pillar panel 31 resin clip 40 clip mounting seat 45 Vertical wall for locking 46 Locking part 47a, 47b Vertical wall 50 shock absorbing pad 51 Mounting surface 52 Convex part for panel abutment 53 Corner 54 through hole 55 Protrusion A side collision area

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60R 21/02-21/04 B60R 13/02 B62D 25/04

Claims (3)

(57) [Claims] 1. An interior component (10) mounted on a side wall panel (30) of a vehicle is attached to a predetermined position on the back surface of the interior component (10), and is deformed or crushed by a side impact,
In a structure for mounting a shock absorbing pad in an interior part for mounting a shock absorbing pad (50) capable of absorbing shock, a locking claw (11) is formed on an inner surface of the interior part (10) and the interior part (10) is attached. Side wall panel (30)
While engaging portion (46) Ru provided in the clip fitting seat (40) for mounting clip (31) for attachment to the impact
Place the clip mounting seat (40) on the absorbent pad (50).
A housing portion (54) such as a through hole or a recess is formed to accommodate the housing portion.
The locking portion (4) of the clip mounting seat (40) is attached to the inner wall of (54).
6) A shock absorbing pad in an interior part, characterized in that a projection (55) engaging with the shock absorbing pad (50 ) is provided, and the shock absorbing pad (50) is fixedly engaged by the locking claw (11) and the locking portion (46). Mounting structure. 2. The locking claw (11) is provided with an inclined portion (12) for guiding in order to provide guide characteristics for inserting the shock absorbing pad (50). A structure for mounting a shock absorbing pad in the interior parts described in the above. 3. The clip mounting seat (40) has a shock absorbing structure which is easily buckled or deformed when a load is applied to the side of the vehicle. A structure for mounting a shock absorbing pad in the interior parts described in the above.