JP5610583B2 - Automotive interior parts and their shock absorbers - Google Patents

Description

  The present invention relates to automotive interior parts such as door trims and rear side trims that are mounted on the interior side of a side wall panel of a vehicle and its shock absorber, and in particular, the side wall of the shock absorber is always seated in the same bent shape. By making it possible to bend, it is possible to stabilize the reaction force load during buckling and facilitate its management.

  Various interior parts for automobiles are mounted in the interior of the automobile. As a typical example of this type of automobile interior part, an automobile door trim that is mounted on the interior side of a side wall panel of a vehicle is known (see, for example, Patent Document 1).

  6 is a front view of a conventional automobile door trim, FIG. 7A is a cross-sectional view of the conventional automobile door trim of FIG. 6 cut along the line AA in FIG. 6, and FIG. ) Is a perspective view of the shock absorber.

  The automobile door trim 1 shown in FIG. 6 has a structure in which various accessory parts are attached to a trim body 2 molded into a required shape. The trim body 2 is a member attached as an interior to the interior side of the side wall panel P of the vehicle as shown in FIG. 7A, and a door trim upper 2A made of a two-layer laminate of a core material and a skin material. The upper and lower halves and the door trim lower 2B made of a synthetic resin injection-molded product are joined together.

  In the trim body 2, an inside handle unit 3 is attached to the door trim upper 2A. In addition, an armrest 4 is integrally formed in the vicinity of the upper edge of the door trim lower 2B so that an occupant can rest on his / her elbows. A speaker grill 5 formed separately or separately is provided.

  For the purpose of reducing the load applied to the crew at the time of a side collision of the vehicle, in the conventional automobile door trim 1, as shown in FIG. 7A, an impact is applied between the trim body 2 and the side wall panel P of the vehicle. An absorber 6 is provided. In order to achieve the above object, the shock absorber 6 has an impact area (specifically, a lower part on the rear side of the door trim lower 2B) that is easily touched by the occupant's waist or shoulder, etc. of the entire trim main body 2 during a vehicle side collision ).

  The shock absorber 6 includes a facing wall 61 facing the side wall panel P of the vehicle, and four side walls 62 rising from the outer peripheral edge of the facing wall 61 toward the trim body 2, and the trim body 2. It consists of a hollow box body made of resin with the surface facing as an opening 63. And the impact absorber 6 which consists of such a hollow box body is a vehicle side because the opposing wall 61 contacts the side wall panel P of a vehicle and the four side walls 62 buckle by the impact force at the time of a vehicle side collision. It is designed to absorb and relieve the impact force at the time of a collision.

  By the way, in the conventional shock absorber 6 described above, for example, as shown in FIGS. 7A and 7B, a slit (hereinafter referred to as “conventional slit 7”) is provided in the side wall 62, so In some cases, the reaction load when the side wall 62 is buckled by the impact force is adjusted.

  However, in the conventional slit 7 as shown in FIGS. 7 (a) and 7 (b), it is impossible to predict which part of the side wall 62 of the shock absorber 6 is bent due to buckling or where the bending occurs. It is difficult to control the way (form) of bending deformation due to buckling. For this reason, even if an impact force at the time of a vehicle-side collision is applied under the same conditions, the reaction force load is not stable and the reaction force load is not stable, for example, the reaction force load when the side wall 62 of the shock absorber 6 buckles is different. There is a problem that force load cannot be managed quantitatively.

JP 2010-89605 A

  The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to prevent the side wall of the shock absorber from buckling in the same bent form so that it can be counteracted during buckling. It is an object of the present invention to provide an automotive interior part and its shock absorber suitable for stabilizing a force load and facilitating its management.

In order to achieve the above object, an automotive interior part according to the present invention is an automotive interior part mounted on the interior side of a side wall panel of a vehicle, and the automotive interior part is a side wall panel of the vehicle. A trim body attached as an interior to the interior side of the vehicle, and a shock absorber disposed between the side wall panel of the vehicle and the trim main body, and the shock absorber is attached to the side wall panel of the vehicle. A resin hollow box body comprising opposing walls facing each other and side walls rising from the outer peripheral edge of the facing walls toward the trim body, and a surface facing the trim body being open as an opening. The side wall of the shock absorber is provided with a stepped slit formed by cutting from the opposing wall toward the opening , and the stepped portion of the stepped slit has a square shape. about It is an feature.

  In the automotive interior part according to the present invention, the opposing wall of the shock absorber may be provided with a slit that is continuous with the stepped slit.

The impact absorber of an automotive interior part according to the present invention is an impact absorber of an automotive interior part mounted on the interior side of a side wall panel of a vehicle, and the automotive interior part is a side wall of the vehicle. A trim body attached as an interior to the interior side of the panel, and an impact absorber disposed between the side wall panel of the vehicle and the trim body, wherein the impact absorber is a side wall panel of the vehicle And a resin-made hollow box having a side wall that rises from the outer peripheral edge of the opposing wall toward the trim body, and a surface that faces the trim body is opened as an opening. A stepped slit formed by cutting from the opposite wall toward the opening is provided on the side wall of the shock absorber, and the stepped portion of the stepped slit has a square shape. this you are The one in which the features.

  In the shock absorber for an automotive interior part according to the present invention, a slit in a form that is continuous with the stepped slit may be provided on the opposing wall of the shock absorber.

  In the present invention, as a specific structure of the shock absorber of the automobile interior part, as described above, the side wall of the shock absorber is cut from the opposite wall of the shock absorber toward the opening. Since the configuration in which the formed stepped slit is provided is employed, the following effects can be obtained.

  According to the present invention, the side wall of the shock absorber is bent due to buckling with the step portion of the stepped slit as a base point. Therefore, it is possible to easily predict where the bending occurs due to which part is bent due to buckling. Moreover, the method (form) of bending deformation by buckling can be easily controlled only by changing the position of the step portion of the stepped slit in the slit longitudinal direction.

  Furthermore, according to the present invention, by setting the position of the step portion of the stepped slit to the same position on the side wall of the shock absorber, the same position, that is, the stepped slit is bent by the buckling. Therefore, the reaction force load when the side wall of the shock absorber is buckled can be set to be substantially the same, and the reaction force load during buckling can be stabilized. Management becomes easy.

The front view of the door trim for motor vehicles to which this invention is applied. 2A is a cross-sectional view of the shock absorber of the automobile door trim of FIG. 1 taken along the line AA of FIG. 1, and FIG. 2B is a perspective view of the shock absorber. The perspective view of other embodiment of an impact-absorbing body. The perspective view of other embodiment of an impact-absorbing body. The perspective view of other embodiment of an impact-absorbing body. The front view of the conventional automotive door trim. 7A is a cross-sectional view of the conventional automobile door trim shock absorber of FIG. 6 taken along the line AA of FIG. 6, and FIG. 7B is a perspective view of the shock absorber.

  Embodiments of the present invention will be described below with reference to the drawings attached to the application.

  1 is a front view of an automobile door trim to which the present invention is applied, FIG. 2 (a) is a cross-sectional view of the automobile door trim of FIG. 1 taken along the line AA in FIG. b) is a perspective view of the shock absorber.

  The automobile door trim 1 shown in FIG. 1 is installed as an automobile interior part on the interior side of the side wall panel P of the vehicle (see FIG. 2A). The automobile door trim 1 shown in FIG. A trim body 2 attached as an interior to the interior side of the vehicle, and a shock absorber 6 disposed between the side wall panel P of the vehicle and the trim body 2, and the shock absorber 6 An opposing wall 61 facing the side wall panel P and a side wall 62 rising from the outer peripheral edge of the opposing wall 61 toward the trim body 2, and a surface facing the trim body 2 open as an opening 63. The basic structure of the automobile door trim 1 shown in FIG. 1, such as the plastic hollow box body, is the same as that of the conventional automobile door trim 1 shown in FIG. Attached And a detailed description thereof will be omitted.

  The shock absorber 6 in FIG. 1 is formed of a composite resin material having a high shock absorption function in which a rubber-based component is added to polypropylene (PP) resin. Further, such an impact absorber 6 is attached and fixed to the back surface of the trim body 2. As an example of the mounting and fixing method, in the shock absorber 6 of FIG. 1, mounting pieces 64 are provided on the side walls 62 on both sides of the opening 63 as shown in FIG. 2A, and the trim body 2 is installed in the mounting holes 65 of the mounting pieces 64. After the boss 2C is inserted, the tip of the boss 2C is crimped by a method such as ultrasonic welding or heat welding, but the shock absorber 6 is trimmed by a method different from this method. You may attach to the back surface of the main body 2. FIG.

  1 are arranged one by one on four sides of the opposing wall 61, and one of the four side walls 62 has a side wall 62 (A), which is shown in FIG. As shown in b), a stepped slit 8 that is cut from the facing wall 61 toward the opening 63 is provided. Further, as shown in FIG. 2 (b), the opposing wall 61 of the shock absorber 6 is provided with a slit (hereinafter referred to as “continuous slit 9”) that is continuous with the stepped slit 8. .

  The stepped slit 8 is formed such that the width on the facing wall 61 side (direction perpendicular to the slit longitudinal direction) is wider than the width on the opening 63 side, with the stepped portion 8A as a boundary.

  2A and 2B show an example in which the stepped portion 8A of the stepped slit 8 is formed near the approximate center in the slit longitudinal direction, the position of the stepped portion 8A is limited to that example. There is no, and it can change suitably along a slit longitudinal direction as needed.

  The impact absorber 6 absorbs and reduces the impact force caused by the impact on the vehicle side by the opposing wall 61 coming into contact with the side wall panel P of the vehicle and the four side walls 62 buckling due to the impact force caused by the impact on the vehicle side. It is supposed to be.

  At this time, when attention is paid to the side wall 62 (A) provided with the stepped slit 8 in the shock absorber 6, the side wall 62 (A) is bent due to buckling with the stepped portion 8 A of the stepped slit 8 as a base point. To do. This has been confirmed by numerous experiments by the present inventors. In the experiment, an impact is applied to the opposing wall 61 of the shock absorber 6.

  A broken line L1 in FIG. 2B indicates a bending position due to buckling with the step portion 8A of the stepped slit 8 as a base point. In addition, broken lines L2, L3, and L4 in FIG. 7B also indicate bending positions due to buckling. Since the conventional slit 7 shown in FIG. 7B does not have the step portion 8A like the stepped slit 8 described above, the bending position due to buckling is different and stable as in the broken lines L2, L3, L4, etc. do not do. On the other hand, when the stepped slit 8 shown in FIG. 2 (b) is adopted, bending due to buckling occurs with the stepped portion 8A as a base point, and the bending position due to buckling is indicated by a broken line L1 in FIG. 2 (b). Stable position.

  In the shock absorber 6, the side wall 62 (62 B) not provided with the stepped slit 8 is integrated with the side wall 62 (A) provided with the stepped slit 8, and thus the side wall 62 provided with the stepped slit 8. (A) It deform | transforms in the form restrained by the bending deformation | transformation by buckling.

  As described above, since the side wall 62 (A) provided with the stepped slit 8 is always bent and deformed by buckling with the stepped portion 8A of the stepped slit 8 as a base point, the bending deformation due to this buckling is caused. The side wall 62 (B) that is deformed in a constrained form, that is, the side wall 62 (B) that is not provided with the stepped slit 8 is also always bent and deformed by buckling.

  In the shock absorber 6, when the position of the stepped portion 8 </ b> A of the stepped slit 8 is changed in the slit longitudinal direction, the side wall 62 (A) provided with the stepped slit 8 is based on the changed stepped portion 8 </ b> A. Bending due to buckling occurs. Therefore, by changing the position of the step portion 8A of the stepped slit 8 in the slit longitudinal direction, the manner (form) of bending deformation due to buckling can be easily controlled.

  3 to 5 are perspective views of other embodiments of the shock absorber. 1, 2 (a) and 2 (b) show an example in which one stepped slit 8 is provided on one side wall 62 (A) constituting the shock absorber 6, but this kind of stepped slit is shown. The number of stepped slits 8 can be appropriately changed as necessary, for example, two are provided on one side wall 62 (A) as shown in FIG.

  Moreover, you may employ | adopt the structure which provides each one stepped slit 8 in the four side walls 62 which comprise the shock absorber 6 like FIG. Also in this case, a plurality of stepped slits 8 provided on each side wall 62 may be provided.

  1, FIG. 2 (a) (b), FIG. 3, and FIG. 4, although the example in which the continuous slit 9 was provided in the opposing wall 61 of the shock absorber 6 was shown, such a continuous slit 9 is needed as needed. It can be omitted as shown in FIG.

  In FIG. 1, FIG. 2 (a) (b), FIG. 3, and FIG. 4, the step part 8A of the stepped slit 8 showed the example of one step, However, The step part 8A may be comprised in multiple steps, Moreover, the structure which provides the said step part 8A only in the one side of the stepped slit 8 is also employable.

  In the embodiment described above, as a specific structure of the shock absorber 6 of the automobile door trim 1, the side wall 62 of the shock absorber 6 is directed from the opposing wall 61 of the shock absorber 6 toward the opening 63. A configuration in which a stepped slit 8 formed by cutting was provided was adopted. For this reason, the side wall 62 of the shock absorber 6 is bent due to buckling with the stepped portion 8A of the stepped slit 8 as a base point. Therefore, it is possible to easily predict where the bending occurs due to which part is bent due to buckling. Moreover, the manner (form) of bending deformation due to buckling can be easily controlled simply by changing the position of the step portion 8A of the stepped slit 8 in the slit longitudinal direction.

  Furthermore, according to the embodiment described above, the position of the stepped portion 8A of the stepped slit 8 is always set to the same position on the side wall 62 of the shock absorber 6, so that the same position, that is, the step of the stepped slit 8 is set. Bending due to buckling occurs with the portion 8A as a base point. Therefore, the reaction force load when the side wall 62 of the shock absorber 6 buckles can be set to be substantially the same, the reaction force load during buckling can be stabilized, and the reaction force load is managed. Is easy.

  Although FIG. 1 shows an example in which the present invention is applied to an automotive door trim, the present invention can also be applied to other automotive interior parts other than an automotive door trim, such as an automotive rear side trim. The present invention is not limited to the embodiments described above, and many modifications can be made by those having ordinary knowledge in the art within the technical idea of the present invention.

1 Automotive door trim (automotive interior parts)
2 Trim body 2A Door trim upper 2B Door trim lower 3 Inside handle unit 4 Armrest 5 Speaker grill 6 Shock absorber 61 Shock absorber opposite wall 62 Shock absorber side wall 63 Shock absorber opening 7 Conventional slit 8 Stepped slit 8A Step part of stepped slit 9 Continuous slit P Side wall panel L1, L2, L3, L4 Bending position due to buckling

Claims (4)

An automotive interior part (1) mounted on the interior side of a side wall panel (P) of a vehicle,
The automotive interior part (1) is:
A trim body (2) attached as an interior to the interior side of the side wall panel (P) of the vehicle;
A shock absorber (6) disposed between the vehicle side wall panel (P) and the trim body (2);
The shock absorber (6)
An opposing wall (61) facing the side wall panel (P) of the vehicle, and a side wall (62) rising from the outer peripheral edge of the opposing wall (61) toward the trim body (2), and And a surface of the trim body (2) facing the trim body (2) is formed of a resin hollow box body opened as an opening (63).
The side wall (62) of the shock absorber (6) is provided with a stepped slit (8) formed by cutting from the opposing wall (61) toward the opening (63) ,
The step part (8A) of the stepped slit (8) has a square shape . 2. The automotive use according to claim 1, wherein the opposing wall (61) of the shock absorber (6) is provided with a slit (9) that is continuous with the stepped slit (8). Interior parts. A shock absorber (6) of an automobile interior part (1) mounted on the interior side of a side wall panel (P) of a vehicle,
The automotive interior part (1) is:
A trim body (2) attached as an interior to the interior side of the side wall panel (P) of the vehicle;
A shock absorber (6) disposed between the vehicle side wall panel (P) and the trim body (2);
The shock absorber (6)
An opposing wall (61) facing the side wall panel (P) of the vehicle, and a side wall (62) rising from the outer peripheral edge of the opposing wall (61) toward the trim body (2), and And a surface of the trim body (2) facing the trim body (2) is formed of a resin hollow box body opened as an opening (63).
The side wall (62) of the shock absorber (6) is provided with a stepped slit (8) formed by cutting from the opposing wall (61) toward the opening (63) ,
The step part (8A) of the stepped slit (8) has a square shape . 4. The automotive use according to claim 3, wherein the opposing wall (61) of the shock absorber (6) is provided with a slit (9) that is continuous with the stepped slit (8). Shock absorber for interior parts.

Images