JP5573179B2 - Resin parts - Google Patents

Description

  The present invention relates to a resin component.

  Patent Document 1 discloses an automobile bumper including a collision energy absorber having a lower block extending in the vehicle width direction and an upper block composed of a plurality of separated bodies. Both the lower block and the upper block are made of foam.

Japanese Patent Laid-Open No. 11-208389 Japanese Utility Model Publication No. 58-39358 JP-A-2-220983 Japanese Utility Model Publication No. 4-23459 JP 2003-245167 A JP-A-5-49522

  However, in general, a foam has a weaker bond than a non-foam and may have a relatively low impact resistance.

  This invention is made | formed in view of the said subject, Comprising: It aims at providing the resin component which can improve impact resistance.

In order to solve the above problems, the resin component according to claim 1 forms a gap between the foam constituting the resin component main body, the film covering the foam, and the foam and the film. comprising a gap forming portion, the gap forming portion, the includes a plurality of partially folded return to the folded portion of the foam mintues tip rely was V-shaped cross section of the film, the adjacent A gap is formed between the folded portions .

According to this resin part, since the gap is formed between the foam and the film, even when an impact is applied from the film side, it is possible to reduce the impact load directly input to the foam. . Thereby, impact resistance can be improved.
In addition, since a gap can be formed between the foam and the film by a plurality of V-shaped folded portions formed by folding a part of the film, an increase in the number of parts can be avoided.

A resin component according to a second aspect is the resin component according to the first aspect, wherein the gap forming portion includes a protrusion formed to protrude from the foam.

  According to this resin component, since the gap can be formed between the foam and the film by the protruding portion formed to protrude from the foam, an increase in the number of components can be avoided.

The resin component according to claim 3 is the resin component according to claim 1, wherein the gap forming portion includes a spacer configured separately from the foam and the film.

  According to this resin part, since the gap can be formed between the foam and the film by the spacer formed separately from the foam and the film, the structure of the foam and the film can be simplified. .

The resin component according to claim 4 is the resin component according to any one of claims 1 to 3 , wherein the gap forming portion is applied to the foam when a load is input from the film side. It is the structure containing the load distribution part which distributes and transmits the said load.

  According to this resin component, when a load is input from the film side, the load is dispersed by the load dispersing portion and transmitted to the foam. Thereby, since the load input into a foam can be reduced, impact resistance can be improved.

The resin component according to claim 5 is the resin component according to claim 4 , wherein the load distribution portion is a gel material.

  According to this resin component, when a load is input from the film side, the gel-like material flows, whereby the load input area is expanded and the load can be dispersed.

A resin component according to a sixth aspect is the resin component according to the fourth aspect , wherein the load distribution portion is a large number of granular materials.

  According to this resin component, when a load is input from the film side, a large number of granular materials are moved, so that the load input area is expanded and the load can be dispersed.

A resin component according to a seventh aspect is the resin component according to the fourth aspect , wherein the load distribution portion is a gel material and a number of granular materials.

  According to this resin component, when a load is input from the film side, the gel material flows and a large number of granular materials are moved, so that the load input area is expanded and the load is dispersed. be able to.

  As described above in detail, according to the present invention, it is possible to improve impact resistance.

It is a principal part expansion perspective view of the bumper cover which concerns on 1st embodiment of this invention. It is a principal part expanded side sectional view of the bumper cover shown by FIG. It is a figure corresponding to FIG. 2 which shows the state which the collision body collided with the bumper cover shown by FIG. It is a principal part expanded side sectional view of the bumper cover which concerns on 2nd embodiment of this invention. It is a figure corresponding to FIG. 4 which shows the state which the collision body collided with the bumper cover shown by FIG. It is a principal part expanded side sectional view of the bumper cover which concerns on 3rd embodiment of this invention. It is a figure corresponding to FIG. 6 which shows the state which the collision body collided with the bumper cover shown by FIG. It is a principal part expanded side sectional view of the bumper cover which concerns on 4th embodiment of this invention. It is a figure corresponding to FIG. 8 which shows the state which the collision body collided with the bumper cover shown by FIG. It is a principal part expanded side sectional view of the bumper cover which concerns on 5th embodiment of this invention. It is a figure corresponding to FIG. 10 which shows the state which the collision body collided with the bumper cover shown by FIG. It is a principal part expanded side sectional view of the bumper cover which concerns on 6th embodiment of this invention. FIG. 13 is a view corresponding to FIG. 12 illustrating a state in which a collision body collides with the bumper cover illustrated in FIG. 12.

[First embodiment]
First, a first embodiment of the present invention will be described.

  A bumper cover 10 as a resin component shown in FIG. 1 is configured as a front bumper cover provided in a vehicle such as a passenger car. As shown in FIG. 2, the bumper cover 10 includes a foam 12 and a film 14.

  The foam 12 constitutes the main body of the bumper cover 10, and the film 14 covers the foam 12 from the outside of the vehicle. A folded portion 16 (gap forming portion) that protrudes from the general surface 14 </ b> A toward the foam 12 is formed on a part of the film 14. The folded portion 16 is formed by being folded into a substantially V-shaped cross section so as to have an opening on the vehicle outer side.

  A plurality of gaps 18 are formed between the foam 12 and the film 14 by the front end of the folded portion 16 abutting against the foam 12. In addition, the front-end | tip part of the folding | turning part 16 may be adhere | attached on the foam 12 with the adhesive material etc., for example.

  According to this configuration, since the gap 18 is formed between the foam 12 and the film 14, as shown in FIG. The impact load that is directly input to the foam 12 can be reduced. Thereby, impact resistance can be improved.

  In addition, when the impact body 70 collides from the film 14 side and an impact is applied, the impact 16 can be absorbed by being deformed so that the folded portion 16 having a substantially V-shaped cross section is opened. Thereby, impact resistance can be further improved.

  Further, since the gap 18 can be formed between the foam 12 and the film 14 by the folded portion 16 formed by folding a part of the film 14, an increase in the number of parts can be avoided.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  The bumper cover 20 according to the second embodiment of the present invention shown in FIG. 4 is modified in the following configuration with respect to the bumper cover 10 according to the first embodiment of the present invention described above.

  That is, the bumper cover 20 includes a protruding portion 26 (gap forming portion) formed to protrude from the foam 12 toward the film 14 side. Then, a plurality of gaps 18 are formed between the foam 12 and the film 14 by the front end portion of the protruding portion 26 abutting against the film 14.

  Even in this configuration, since the gap 18 is formed between the foam 12 and the film 14, as shown in FIG. 5, when the impact body 70 collides from the film 14 side and an impact is applied The impact load that is directly input to the foam 12 can be reduced. Thereby, impact resistance can be improved.

  When the collision body 70 collides and an impact is applied, the impact can be absorbed by the deformation of the projection 26 made of the foam material. Thereby, impact resistance can be further improved.

  Moreover, since the clearance gap 18 can be formed between the foam 12 and the film 14 by the protrusion part 26 which protruded and formed in the foam 12, the increase in a number of parts can be avoided.

[Third embodiment]
Next, a third embodiment of the present invention will be described.

  The configuration of the bumper cover 30 according to the third embodiment of the present invention shown in FIG. 6 is changed as follows with respect to the bumper cover 10 according to the first embodiment of the present invention described above.

  That is, the bumper cover 30 includes a plurality of granular materials 36 (gap forming portions, spacers). The plurality of granular materials 36 are each composed of spherical beads, for example, and are interposed between the foam 12 and the film 14.

  Note that the plurality of granular materials 36 may be fixed to the foamed material by, for example, an adhesive. The plurality of granular materials 36 form gaps 18 between the foam 12 and the film 14.

  Even in this configuration, since the gap 18 is formed between the foam 12 and the film 14, as shown in FIG. 7, when the collision body 70 collides from the film 14 side and an impact is applied The impact load that is directly input to the foam 12 can be reduced. Thereby, impact resistance can be improved.

  Moreover, since the clearance gap 18 can be formed between the foam 12 and the film 14 by the some granular material 36 comprised separately from the foam 12 and the film 14, the structure of the foam 12 and the film 14 is formed. It can be simplified.

  In addition to the plurality of granular materials 36, other spacers may be used.

  Further, the folded portion 16, the protruding portion 26, and the plurality of granular materials 36 may be used in appropriate combination.

  Further, each of the plurality of granular materials 36 may be made of an elastic body.

  If comprised in this way, when the collision body 70 collides and an impact is added, the impact can be absorbed by deform | transforming the several granular material 36 which consists of an elastic body. Thereby, impact resistance can be further improved.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described.

  The bumper cover 40 according to the fourth embodiment of the present invention shown in FIG. 8 is configured as follows with respect to the bumper cover 10 according to the first embodiment of the present invention described above.

  That is, the bumper cover 40 includes a gel material 46 (gap forming portion, load distribution portion). The gel material 46 is filled in the gap 18 between the foam 12 and the film 14.

  According to this configuration, as shown in FIG. 9, when a collision body 70 collides from the film 14 side and a load is input, the gel material 46 flows to expand the load input area. The load can be dispersed. Thereby, since the load input into the foam 12 can be reduced, impact resistance can be improved.

[Fifth embodiment]
Next, a fifth embodiment of the present invention will be described.

  The bumper cover 50 according to the fifth embodiment of the present invention shown in FIG. 10 has the following configuration with respect to the bumper cover 10 according to the second embodiment of the present invention described above.

  That is, in the bumper cover 50, a large number of granular materials 56 (gap forming portions, load distribution portions) are accommodated in the gaps 18 between the foam 12 and the film 14. Further, the protruding portion 26 plays a role of partitioning the gap 18 into a plurality of spaces 18A in the vehicle vertical direction, whereby a large number of granular materials 56 remain in the partitioned spaces 18A.

  According to this configuration, when the collision body 70 collides from the film 14 side and a load is input, a large number of granular materials 56 are moved, so that the load input area is expanded and the load is dispersed. Can do. Thereby, since the load input into the foam 12 can be reduced, impact resistance can be improved.

[Sixth embodiment]
Next, a sixth embodiment of the present invention will be described.

  The bumper cover 60 according to the sixth embodiment of the present invention shown in FIG. 12 is a combination of the bumper cover 40 according to the above-described fourth embodiment of the present invention and the bumper cover 50 according to the fifth embodiment of the present invention. It is said that.

  In other words, in the bumper cover 60, the gap 18 between the foam 12 and the film 14 is filled with the gel material 46 and a large number of granular materials 56 are accommodated.

  According to this configuration, as shown in FIG. 13, when a collision body 70 collides from the film 14 side and a load is input, the gel material 46 flows and a large number of granular materials 56 are formed. By being moved, the load input area is expanded and the load can be dispersed. Thereby, since the load input into the foam 12 can be reduced, impact resistance can be improved.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

  In each of the above embodiments, the present invention is applied to the front bumper cover. However, the present invention may be applied to a rear bumper cover, and may be applied to other vehicle resin parts.

10, 20, 30, 40, 50, 60 Bumper cover 12 Foam 14 Film 16 Folded part (gap forming part)
18 Gap 26 Projection (gap forming part)
36 Granular material (gap forming part, spacer)
46 Gel material (gap forming part, load distribution part)
56 Granular material (gap forming part, load distribution part)

Claims (7)

A foam constituting the resin component body;
A film covering the foam;
A gap forming part for forming a gap between the foam and the film;
With
The gap forming unit, forming a gap between the part folding return to foam includes a plurality of V-shaped section of the folded portion which abuts the tip, the adjacent folded portions of the film resin components were. The gap forming portion includes a protrusion formed to protrude from the foam.
The resin component according to claim 1. The gap forming portion includes a spacer configured separately from the foam and the film,
The resin component according to claim 1. The gap forming portion includes a load distribution portion that distributes and transmits the load to the foam when a load is input from the film side.
The resin component as described in any one of Claims 1-3. The load distribution part is a gel material,
The resin component according to claim 4. The load distribution portion is a large number of granular materials,
The resin component according to claim 4. The load distribution part is a gel material and a number of granular materials,
The resin component according to claim 4.

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