JP5375587B2 - Resin parts structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a boundary position between a fender panel and a front bumper cover of resin parts from changing, even when an environmental temperature changes. <P>SOLUTION: A structure 10 of the resin parts includes: a foam 12 which constitutes a body of the front bumper cover 42; a skin material 14 which has a lower coefficient of linear expansion than that of the foam 12, and covers the foam 12 from the outside; and a mounting part 16 which is formed with a part of the skin material 14, and fixes the front bumper cover 42 on a fender panel 44. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a resin component structure.

  Conventionally, the following is known as a resin component structure (for example, refer to Patent Document 1). That is, the automobile spoiler described in Patent Document 1 has an interior member covered with a skin layer, and a fixture is integrally fixed to the interior member.

Japanese Patent Laid-Open No. 4-121288 JP 2004-168147 A JP 11-189106 A Japanese Patent Laid-Open No. 11-287021

  However, in the automobile spoiler described in Patent Document 1, the interior member to which the fixture is fixed is made of a foam having a larger linear expansion coefficient than the skin layer. For this reason, when environmental temperature changes, there exists a possibility that the attachment state of the interior member with respect to a vehicle body may change by the thermal expansion-contraction of an interior member.

  This invention is made in view of the said subject, Comprising: Even when environmental temperature changes, the resin component structure which can suppress that the attachment state of a resin component and a to-be-attached member changes is provided. For the purpose.

In order to solve the above-mentioned problem, the resin part structure according to claim 1 has a foam material constituting a main body of the resin part, a linear expansion coefficient lower than that of the foam material, and covers the foam material from the outside. A skin material, and a mounting portion that is formed by a part of the skin material and fixes the resin component and the member to be mounted , the mounting portion projecting from the foam material, Formed on the distal end side of the projecting part, having a fixed part fixed to the mounted member, a space part provided with the projecting part is formed between the fixed part and the foamed material, The foam material is formed in a longitudinal shape, and has an opening portion in which the attached member is disposed, and the space portion is formed between the fixed portion and the opening portion in the longitudinal direction of the foam material. It is formed between the inner walls .

  According to this resin component structure, the mounting portion for fixing the resin component and the mounted member is formed by a part of the skin material having a lower linear expansion coefficient than the foamed material. Therefore, even when the environmental temperature changes, it is possible to suppress thermal expansion and contraction of the attachment portion, and thus it is possible to suppress a change in the attachment state between the resin component and the attached member.

Further , according to this resin component structure, the mounting portion is formed with a protruding portion that protrudes with respect to the foam material, and the fixing portion with the mounted member is formed on the tip side of the protruding portion. To be separated from the foam material. Therefore, since the fixing portion is less likely to be affected by the foam material having a high linear expansion coefficient, it is possible to further effectively suppress the change in the mounting state between the resin component and the mounted member.

Furthermore, according to this resin component structure, a space is formed between the fixed portion and the foamed material, and the above-described protrusion is provided in this space. Therefore, even when the foam material is thermally expanded and contracted, the thermal expansion and contraction of the foam material can be absorbed by the protrusions being bent in the space portion.

By the way, generally, when the foamed material is formed in a longitudinal shape, the amount of thermal expansion and contraction is larger in the longitudinal direction than in the lateral direction. However, according to this resin component structure, since the above-described space is formed between the fixed portion in the longitudinal direction of the foam material and the inner wall of the opening, the mounting state of the resin component and the mounted member changes. This can be suppressed more efficiently.

The resin part structure according to claim 2 is the resin part structure according to claim 1 , wherein an end of the foamed material on the attached member side is a parting between the resin part and the attached member. Is also configured to be located on the opposite side to the attached member.

  According to this resin component structure, the end of the foam member on the attached member side is located on the opposite side of the attached member relative to the parting between the resin part and the attached member (the place outside the parting out) Is located). Therefore, even when the foam material is thermally expanded and contracted, it is possible to more effectively suppress the change of the parting position between the resin component and the attached member.

  As described above in detail, according to the present invention, it is possible to suppress a change in the mounting state between the resin component and the mounted member even when the environmental temperature changes.

It is a perspective view showing the composition of the front part of the vehicle which has the resin part to which the resin part structure concerning one embodiment of the present invention was applied. FIG. 2 is a sectional view taken along line 2-2 shown in FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  Note that an arrow UP, an arrow FR, and an arrow OUT shown in each figure respectively indicate the vehicle up-down direction upper side, the vehicle front-rear direction front side, and the vehicle width direction outer side (left side).

  As shown in FIG. 1, a vehicle 40 according to an embodiment of the present invention includes a front bumper cover 42, a fender panel 44, an engine hood 46, a headlamp 48, and a front grill 50 at the front part of the vehicle body. ing.

  The front bumper cover 42 includes a front surface portion 42A that extends in the vehicle width direction and side surface portions 42B that are formed on both sides of the front surface portion 42A in the vehicle width direction. The front bumper cover 42 is applied with the resin component structure 10 according to an embodiment of the present invention.

  The front bumper cover 42 has a symmetrical configuration, and here, the configuration of the front bumper cover 42 on the left side of the vehicle will be described, and the description of the configuration of the front bumper cover 42 on the right side of the vehicle will be omitted.

  As shown in FIG. 2, the front bumper cover 42 includes the foam material 12 and the skin material 14.

  The foam material 12 is made of, for example, a foamed material such as polyethylene, polypropylene, or polystyrene, and constitutes the main body of the front bumper cover 42 as a resin component. The entire front bumper cover 42 including the foam material 12 is formed in a longitudinal shape extending in the vehicle width direction.

  The skin material 14 is composed of a film (for example, a film such as polycarbonate) having a linear expansion coefficient lower than that of the foam material 12 and having stretchability (elasticity). The skin material 14 covers the foam material 12 from the outside of the vehicle while being in close contact with the foam material 12 described above.

  A part of the skin material 14 on the fender panel 44 side is configured as an attachment portion 16 for fixing the front bumper cover 42 to the fender panel 44. The mounting portion 16 has a protruding portion 18 that protrudes toward the fender panel 44 with respect to the end portion 12A of the foam material 12 on the fender panel 44 side, and a fixing portion 20 that is formed on the distal end side of the protruding portion 18. Configured.

  The projecting portion 18 is bent so as to go inward in the vehicle width direction toward the fender panel 44 side, and the fixing portion 20 extends along the vehicle width direction.

  On the other hand, on the front bumper cover 42 (mounting portion 16) side of the fender panel 44, a bent portion 58 that is bent so as to go inward in the vehicle width direction toward the front bumper cover 42 side, and a tip of the bent portion 58 An attached portion 60 extending from the side toward the inside in the vehicle width direction is formed.

  And the fixing | fixed part 20 is being fixed with the fixing tools 61, such as this to-be-attached part 60 and a clip, a volt | bolt, in the state facing the to-be-attached part 60 and the clearance gap 22. As shown in FIG. Thereby, the front bumper cover 42 and the fender panel 44 as a member to be attached are fixed to each other.

  Further, the end portion 12 </ b> A on the fender panel 44 side of the foam material 12 is offset to the opposite side to the fender panel 44.

  As described above, in the state where the attachment portion 16 is attached to the fender panel 44 and the front bumper cover 42 and the fender panel 44 are fixed, the space portion 24 is formed between the fixing portion 20 and the foamed material 12. Is formed. Further, the above-described protrusion 18 is provided in the space 24.

  More specifically, the end portion 12A on the fender panel 44 side of the foam material 12 has a fender panel 44 rather than a parting line 62 (portion indicated by the region A) between the front bumper cover 42 and the fender panel 44. (In other words, it is located at a position away from the fender panel 44 from the region A where the parting 62 is formed).

  On the other hand, the front grill 50 shown in FIG. 1 is disposed on the inner side of the opening 64 formed in the vehicle width direction central portion of the front bumper cover 42 described above, and is the same mounting portion as the mounting portion 16 described above. 26 is fixed to the front bumper cover 42.

  That is, as shown in FIG. 3, the attachment portion 26 is formed by a part of the skin material 14, and protrudes toward the front grill 50 with respect to the end portion 12 </ b> B on the front grill 50 side of the foam material 12. It has a portion 28 and a fixing portion 30 formed on the distal end side of the protruding portion 28.

  The projecting portion 28 is bent so as to go to the rear side in the vehicle front-rear direction as it goes toward the front grille 50, and the fixed portion 30 extends along the vehicle front-rear direction.

  On the other hand, the front grill 50 includes a grill main body 68 that extends in the vehicle width direction and is formed in a net shape, and a clip 70 that is provided on the outer side of the grill main body 68 in the vehicle width direction.

  And the fixing | fixed part 30 is clamped by the clip 70, and the front bumper cover 42 and the front grille 50 as a to-be-attached member are fixed by this.

  Further, the end 12 </ b> B on the front grill 50 side of the foam material 12 is offset to the opposite side to the front grill 50.

  As described above, in the state where the attachment portion 26 is attached to the clip 70 and the front bumper cover 42 and the front grill 50 are fixed, the fixing portion 30 in the longitudinal direction (vehicle width direction) of the foamed material 12 A space 34 is formed between the side wall (inner wall) 64 </ b> A of the opening 64. Further, the protruding portion 28 described above is provided in the space portion 34.

  More specifically, the side wall 64 </ b> A of the opening 64 (the end portion on the front grill 50 side of the foam material 12) is indicated by a parting 72 (region B) between the front bumper cover 42 and the front grill 50. (That is, located at a position away from the front grill 50 from the region B where the parting 72 is formed).

  The front grill 50 is fixed to the front bumper cover 42 by the mounting portion 26 described above, and is not fixed to members other than the front bumper cover 42. Further, the end portions 50A and 50B on both sides in the vehicle vertical direction of the front grill 50 shown in FIG. 1 are in contact with the upper wall 64B and the lower wall 64C of the opening 64.

  That is, the front grill 50 is supported by the upper wall 64B and the lower wall 64C of the opening 64 in the vehicle vertical direction.

  Next, the operation and effect of one embodiment of the present invention will be described.

  According to this resin component structure 10, as shown in FIG. 2, the mounting portion 16 that fixes the front bumper cover 42 to the fender panel 44 is formed by a part of the skin material 14 having a lower linear expansion coefficient than the foam material 12. Is formed. Therefore, even when the environmental temperature changes, the thermal expansion and contraction of the mounting portion 16 can be suppressed, and thus the mounting state between the front bumper cover 42 and the fender panel 44, that is, the position of the parting 62 is suppressed. be able to.

  Further, the mounting portion 16 is formed with a protruding portion 18 that protrudes with respect to the foam material 12, and the fixing portion 20 with the fender panel 44 is formed on the distal end side of the protruding portion 18, whereby the foam material is formed. 12. Therefore, since the fixing portion 20 is less likely to be affected by the foam material 12 having a high linear expansion coefficient, it is possible to more effectively suppress the change in the position of the parting line 62.

  In particular, a space portion 24 is formed between the fixed portion 20 and the foamed material 12, and the above-described protruding portion 18 is provided in the space portion 24. Therefore, even when the foam material 12 is thermally expanded and contracted, the thermal expansion and contraction of the foam material 12 can be absorbed by the protruding portion 18 being bent in the space portion 24.

  Further, the end 12A of the foam 12 on the fender panel 44 side is located on the opposite side of the fender panel 44 from the parting 62 (that is, from the region A where the parting 62 is formed to the side opposite to the fender panel 44). Is located in a place that is out of place). Therefore, even when the foamed material 12 is thermally expanded and contracted, it is possible to more effectively suppress the position of the parting line 62 from changing.

  Further, as described above, when the space portion 24 is formed between the fixing portion 20 and the foamed material 12, for example, when the vehicle collides, a bending force F toward the vehicle inner side with respect to the side surface portion 42B of the front bumper cover 42 is obtained. Even when is acting, the bending force F can be absorbed by the elastic deformation of the protrusion 18. Thereby, the shock absorption at the time of a collision can also be improved.

  Similarly, according to the resin component structure 10, as shown in FIG. 3, the mounting portion 26 between the front bumper cover 42 and the front grill 50 is made of the skin material 14 having a lower linear expansion coefficient than the foam material 12. Formed by some. Therefore, even when the environmental temperature changes, the thermal expansion and contraction of the mounting portion 26 can be suppressed, and thus the mounting state of the front bumper cover 42 and the front grill 50, that is, the position of the parting 72 is suppressed from changing. be able to.

  In addition, the mounting portion 26 is formed with a protruding portion 28 that protrudes with respect to the foam material 12, and the fixing portion 30 with the front grill 50 is formed on the front end side of the protruding portion 28, thereby forming the foam material. 12. Therefore, since the fixed portion 30 is less likely to be affected by the foam material 12 having a high linear expansion coefficient, the position of the parting line 72 can be further effectively suppressed.

  In particular, a space portion 34 is formed between the fixed portion 30 and the foam material 12, and the above-described protruding portion 28 is provided in the space portion 34. Therefore, even if the foam material 12 is thermally expanded and contracted, the thermal expansion and contraction of the foam material 12 can be absorbed by the protruding portion 28 being bent in the space portion 34.

  In general, when the foamed material 12 is formed in a longitudinal shape, the amount of thermal expansion and contraction is greater in the longitudinal direction than in the lateral direction. However, according to this resin component structure 10, since the space portion 34 is formed between the fixed portion 30 in the longitudinal direction (vehicle width direction) of the foam material 12 and the side wall 64 </ b> A of the opening 64, the parting 72 is formed. It is possible to more efficiently suppress the change.

  Further, the side wall 64A of the opening 64 is located on the opposite side of the front grille 50 from the parting 72 (that is, the part 64 is located away from the region B where the parting 72 is formed on the opposite side to the front grille 50). Have been). Therefore, even when the foam material 12 is thermally expanded and contracted, it is possible to more effectively suppress the change of the position of the parting 72.

  In the above embodiment, the resin component structure 10 is applied to the front bumper cover 42 and the front grille 50. However, the resin component structure 10 may be applied to a vehicle exterior panel such as a fender panel, a garnish, a molding, or the like. good.

  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.

DESCRIPTION OF SYMBOLS 10 Resin part structure 12 Foam material 14 Skin material 16,26 Attachment part 18,28 Protruding part 20,30 Fixing part 24,34 Space part 42 Front bumper cover (resin part)
44 Fender panel (attachment member)
50 Front grille (attached member)
62, 72 parting 64 opening 64A side wall (inner wall of opening)

Claims (2)

A foam material constituting the body of the resin component;
A skin material having a lower linear expansion coefficient than the foam material and covering the foam material from the outside;
An attachment portion that is formed by a part of the skin material and fixes the resin component and the attachment member;
Equipped with a,
The mounting portion includes a protruding portion that protrudes with respect to the foam material, and a fixing portion that is formed on a distal end side of the protruding portion and is fixed to the mounted member.
Between the fixed portion and the foamed material, a space portion provided with the protruding portion is formed,
The foamed material is formed in a longitudinal shape, and has an opening in which the attached member is disposed inside,
The space portion is formed between the fixed portion and the inner wall of the opening in the longitudinal direction of the foam material.
Resin part structure. An end of the foamed material on the attached member side is located on the opposite side of the attached member from a parting between the resin component and the attached member.
The resin part structure according to claim 1 .

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