JP5332827B2 - Part mounting structure to resin parts - Google Patents

Description

  The present invention relates to a part mounting structure to a resin part for attaching an auxiliary part to the resin part.

  Conventionally, a boss part is set in a resin part, and an auxiliary part (another part) is fastened to the boss part (see, for example, Patent Document 1). In the component mounting structure disclosed in this patent document, a boss portion is integrally formed on the back surface of a vehicle instrument panel (resin component), and a grab box striker (auxiliary component) is bolted to the boss portion. .

JP 2001-130287 A

  In the component mounting structure as described above, since the boss portion is set on the back surface of the resin component, a molding defect such as a so-called sink occurs on the design surface of the resin component, which causes a problem in terms of appearance. For this reason, a boss part cannot be set in a portion where a molding defect of the design surface is conspicuous, and an auxiliary part is attached to the resin part by a fitting structure using a claw. However, in a fitting structure using a claw, the two cannot be firmly bonded, and thus there is a possibility that the auxiliary part is easily detached or a coupling failure is caused.

  In consideration of the above facts, the present invention has an object to obtain a component mounting structure to a resin component that does not require a boss portion on the resin component and can firmly attach an auxiliary component to the resin component.

According to a first aspect of the present invention, there is provided a resin component mounting structure for a resin component comprising: a resin component having a locking portion; a contact portion that contacts one side of the locking portion; and another side of the locking portion. An auxiliary component having a boss portion to be disposed, and the boss portion is fastened to abut on the other side of the locking portion, and the locking portion is moved to the abutting portion side which is a direction different from the fastening direction. is characterized by comprising a pressing piece presses pressing, the.

In the component mounting structure to the resin component according to the first aspect, the contact portion provided in the auxiliary component contacts one side of the locking portion provided in the resin component. On the other side of the locking portion, a boss portion provided in the auxiliary part is disposed, and a pressing piece is fastened to the boss portion. The pressing piece abuts on the other side of the locking portion and presses the locking portion toward the abutting portion which is a direction different from the fastening direction. Thereby, since the latching | locking part of a resin component is clamped between the contact part of an auxiliary component, and a press piece, an auxiliary component can be firmly attached to a resin component with the said clamping force. Moreover, since the boss portion is provided in the auxiliary part, it is not necessary to provide the boss part in the resin part. Furthermore, since the fastening direction of the fastening part to the boss part and the pressing direction of the locking part are set in different directions, the fastening direction of the fastening part is set so that the fastening work of the fastening part is facilitated. be able to.

  The component attachment structure to the resin component according to the invention of claim 2 is the component attachment structure to the resin component according to claim 1, wherein the pressing piece is fastened to the boss portion by a screw member, The pressing force of the locking portion by the pressing piece can be adjusted by adjusting the screwing amount of the screw member into the boss portion.

  In the component mounting structure to the resin component according to the second aspect, the pressing force of the locking portion by the pressing piece can be adjusted by adjusting the screwing amount of the screw member into the boss portion. Thereby, since the clamping force of the latching | locking part by a press piece and a contact part can be adjusted, the attachment strength of the auxiliary component with respect to a resin component can be adjusted as needed.

  A component mounting structure to a resin component according to a third aspect of the present invention is the component mounting structure to the resin component according to the second aspect, wherein the boss portion has one side of a fastening surface to which the pressing piece is fastened. The screw member is retracted with respect to the other side in the screwing direction.

  In the component mounting structure to the resin component according to claim 3, there is a gap between one side of the fastening surface and the pressing piece in a state where the pressing piece is fastened to the other side of the fastening surface of the boss portion by the screw member. Secured. For this reason, it is possible to displace all or part of the pressing piece with respect to the boss portion by further screwing the screw member from this state. Therefore, the contact state of the pressing piece with the locking portion can be changed by this displacement, so that the pressing force of the locking portion by the pressing piece can be adjusted. Therefore, the pressing force of the locking portion can be adjusted with a simple configuration.

  The component mounting structure to the resin component according to the invention of claim 4 is the component mounting structure to the resin component according to any one of claims 1 to 3, wherein the auxiliary component and the pressing piece are The pressing piece is molded integrally with the boss portion through an integral hinge.

  In the component mounting structure to the resin component according to the fourth aspect, the pressing piece is formed integrally with the boss portion of the mounting member via the integral hinge. For this reason, compared with the case where a press piece is shape | molded separately from an attachment member, the number of the metal mold | dies for shaping | molding can be decreased and manufacturing cost can be reduced. And since it becomes unnecessary to consider the position alignment and variation at the time of fastening a press piece to a boss | hub part, the fastening state of the press piece with respect to a boss | hub part can be made favorable. Thereby, the press state of the latching | locking part by a press piece can be made favorable.

The component mounting structure to the resin component according to the invention described in claim 5 is the component mounting structure to the resin component according to any one of claims 1 to 4, wherein the pressing piece is the boss portion. a fastening section fastened to, extending from the fastening portion, the conjunction in engaged contact with the other side of the locking portion, as characterized by having a cantilevered portion for pressing the front Symbol locking portion Yes.

In the component mounting structure to the resin component according to claim 5, when the fastening portion of the pressing piece is fastened to the boss portion, the cantilever portion extended from the fastening portion contacts the locking portion of the resin component. . Thereby, a cantilever part can press a latching | locking part.

  According to a sixth aspect of the present invention, there is provided the component mounting structure for resin parts according to the fifth aspect of the present invention, wherein the protrusion is provided on the tip end side of the cantilever portion, and the protrusion is It is characterized by abutting on the locking portion.

  In the component mounting structure to the resin component according to the sixth aspect, the protrusion provided on the front end side of the cantilever portion of the pressing piece comes into contact with the locking portion of the resin component. Therefore, for example, even when the cantilever portion is inclined with respect to the locking portion, the pressing state of the locking portion can be improved.

  According to a seventh aspect of the present invention, there is provided the component mounting structure for resin parts according to any one of the first to sixth aspects, wherein the locking portion includes A first collar is provided, and the contact section is provided with a second collar that engages with the first collar.

  In the component mounting structure to the resin component according to the seventh aspect, the first flange provided in the locking portion of the resin component engages with the second flange provided in the contact portion of the auxiliary component. Thereby, since the drop-off of the auxiliary component from the resin component can be prevented, the attachment strength of the auxiliary component to the resin component can be improved.

As described above, in the component mounting structure to the resin component according to the first aspect, it is not necessary to provide the boss portion on the resin component, and the auxiliary component can be firmly mounted on the resin component. Furthermore, the fastening direction of a fastening part can be set so that the fastening operation | work of a fastening part becomes easy.

  In the component mounting structure to the resin component according to the second aspect, the mounting strength of the auxiliary component with respect to the resin component can be adjusted.

  In the component mounting structure to the resin component according to the third aspect, the pressing force of the locking portion by the pressing piece can be adjusted with a simple configuration.

  In the component mounting structure to the resin component according to the fourth aspect, the manufacturing cost can be reduced and the pressing state of the locking portion by the pressing piece can be improved.

In the component mounting structure to the resin component according to the fifth aspect, the cantilever portion can press the locking portion.

  In the component mounting structure to the resin component according to the sixth aspect, even when the cantilever portion is inclined with respect to the locking portion, the pressing state of the locking portion can be improved.

  In the component mounting structure to the resin component according to the seventh aspect, it is possible to prevent the auxiliary component from falling off from the resin component, and to improve the mounting strength of the auxiliary component with respect to the resin component.

1 is a perspective view showing a partial configuration of a vehicle body front portion of a vehicle configured by applying a component mounting structure to a resin component according to an embodiment of the present invention. It is the perspective view which looked at the lower grille of the vehicle shown in Drawing 1 from the back side. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. It is the expanded sectional view which expanded a part of FIG. It is sectional drawing corresponding to FIG. 4 which shows the state before the pressing piece of a lower grill is fastened by the boss | hub part. It is sectional drawing corresponding to FIG. 3 which shows the state before the pressing piece of a lower grill is fastened by the boss | hub part. It is sectional drawing which shows the comparative example of embodiment of this invention. It is sectional drawing for demonstrating the inclination angle of the fastening surface of the boss | hub part of a lower grill.

  Hereinafter, with reference to FIGS. 1-8, the component attachment structure to the resin component which concerns on embodiment of this invention is demonstrated.

  In the present embodiment, the present invention is applied to the mounting structure for mounting the lower grill 16 (auxiliary component) to the bumper cover 14 (resin component) of the vehicle 12 shown in FIG. In each figure, the arrow FR indicates the forward direction of the vehicle 12, the arrow UP indicates the upward direction of the vehicle 12, and the arrow IN indicates the vehicle width inside direction of the vehicle 12.

  The bumper cover 14 is formed by injection molding of a resin material, and is attached to the front end portion of the vehicle body 18. At both ends of the bumper cover 14 in the vehicle width direction, substantially rectangular openings 20 that are long along the vehicle width direction are formed. A lower grill 16 is fitted in the opening 20.

  The lower grill 16 is formed by injection molding of a resin material, and includes a frame portion 22 formed in a frame shape as shown in FIG. A plurality of (three in this embodiment) lattice portions 24 formed in a long shape are provided inside the frame portion 22. These lattice portions 24 are arranged at substantially equal intervals in the vertical direction of the vehicle body with the longitudinal direction along the vehicle width direction, and both ends in the longitudinal direction are coupled to the frame portion 22. In the lower grill 16, the frame portion 22 is engaged with the peripheral portion of the opening 20, so that displacement of the bumper cover 14 toward the vehicle front side is restricted.

  As shown in FIG. 3, a contact portion 26 is provided at the vehicle body front side end portion of the upper wall 22 </ b> A of the frame portion 22. The contact portion 26 is in contact with the lower surface of a locking claw 28 (engagement portion) provided at the vehicle rear side end portion of the upper wall 14A of the opening 20. A contact portion 30 is provided at the vehicle front side end portion of the lower wall 22 </ b> B of the frame portion 22. The contact portion 30 is in contact with the upper side surface of the locking claw 32 provided at the vehicle rear side end portion of the lower wall 14B of the opening 20. Although not shown, a plurality of contact portions and locking claws similar to the contact portions 26 and 30 and the locking claws 28 and 32 are provided at the peripheral portions of the frame portion 22 and the opening 20 at predetermined intervals. Is provided.

  A first collar portion 28A that protrudes toward the vehicle lower side is provided at the distal end portion of the locking claw 28, and a second collar portion 26A that projects toward the vehicle upper side is provided at the distal end portion of the contact portion 26. It has been. The second flange portion 26A is hooked on the vehicle front side end portion of the first flange portion 28A, whereby the frame portion 22 (lower grille 16) is locked to the upper wall 14A of the opening 20.

  The front end of the locking claw 32 is provided with a third flange 32A that protrudes upward in the vehicle, and the front end of the contact portion 26 is a fourth flange 30A that protrudes downward in the vehicle. Is provided. The fourth flange portion 30A is hooked on the vehicle front side end portion of the third flange portion 32A, whereby the frame portion 22 (lower grille 16) is locked to the lower wall 14B of the opening 20.

  On the other hand, as shown in FIGS. 3 and 4, a boss portion 34 constituting the lower grill 16 is disposed in the vicinity of the upper side of the vehicle body of the locking claw 28 (upper wall 14 </ b> A). The boss portion 34 is formed integrally with the lower grill 16 and is connected to the frame portion 22 via a connecting portion (not shown). The boss portion 34 is formed with a screw hole 36 penetrating in the longitudinal direction of the vehicle body.

  Further, a pressing piece 40 is connected to the front end side of the upper portion of the boss portion 34 via an integral hinge 38 (thin wall portion). The pressing piece 40 is formed integrally with the boss portion 34, that is, the lower grill 16. The pressing piece 40 is connected to the boss portion 34 in the state shown in FIGS. 5 and 6 at the time of molding, but is rotated to the position shown in FIGS. 3 and 4 by bending the integral hinge 38. Can be done.

  As shown in FIGS. 4 and 5, the pressing piece 40 is formed in a substantially crank shape in cross section, and extends from the connecting portion 40A connected to the integral hinge 38 and the tip of the connecting portion 40A. The fastening portion 40B and the cantilever portion 40C extending from the tip of the fastening portion 40B are provided. Between the connection part 40A and the fastening part 40B and between the fastening part 40B and the cantilever part 40C, it is bent at a substantially right angle. A through hole 42 is formed in the fastening portion 40B of the pressing piece 40, and a screw 44 (screw member) passing through the through hole 42 is screwed into the screw hole 36 of the boss portion 34, whereby the fastening portion 40B. (Pressing piece 40) is fastened to the boss 34 (shown in FIGS. 3 and 4). In addition, a screw, a volt | bolt, etc. can also be used as a screw member.

  In the above-described fastening state, the protruding portion 45 provided at the upper portion of the vehicle rear side end portion of the boss portion 34 enters the inside of the through hole 42 and contacts the head of the screw 44. Moreover, the lower part side of the vehicle rear side end part of the boss part 34 is a fastening surface 35 to which the fastening part 40B is fastened. As shown in FIG. 5, the fastening surface 35 is inclined with respect to the axis X (see FIG. 5) of the screw hole 36, and the lower end side is closer to the vehicle front side (screwing direction of the screw 44) than the upper end side. Evacuated.

  Moreover, in the above-mentioned fastening state, as shown in FIG. 4, the connecting portion 40A is arranged along the vehicle front-rear direction, the fastening portion 40B is arranged along the vehicle vertical direction, and the cantilever portion 40C is the vehicle. It arrange | positions along the front-back direction (along the latching claw 28). A protrusion 48 protruding toward the opposite side to the fastening portion 40B is provided at the tip of the cantilever portion 40C. The protrusion 48 abuts on the upper side surface of the locking claw 28 above the first flange portion 28A of the locking claw 28 and presses the locking claw 28 toward the contact portion 26 side (the vehicle lower side) (FIG. 4). Arrow F1). Further, a rib 48 that reinforces the cantilever 40C is provided on the base end side of the cantilever 40C, and this rib 48 also abuts on the upper surface of the locking claw 28 in the above-mentioned fastening state, 28 is pressed toward the contact portion 26 side (the vehicle lower side) (see arrow F2 in FIG. 4).

  In this embodiment, since the fastening surface 35 of the boss portion 34 is inclined as described above, the fastening portion 40B is fastened to the upper end side of the fastening surface 35 by screwing (tightening) the screw 44 (see FIG. 4), a clearance is secured between the lower end side of the fastening surface 35 and the fastening portion 40B. Therefore, when the screw 44 is further tightened from this state, the lower end side of the fastening portion 40B bends (displaces) toward the fastening surface 35 side, and the protrusion 48 and the rib 48 of the cantilever portion 40C strongly It comes to be pressed.

  Next, the operation and effect of this embodiment will be described.

  In the present embodiment, when the lower grill 16 is attached to the bumper cover 14, the lower grill 16 is attached to the opening 20 from the back side (right side in FIG. 6) of the bumper cover 14. As a result, the second collar part 26A of the contact part 26 is hooked on the first collar part 28A of the locking claw 28, and the fourth collar part 30A of the contact part 30 is engaged with the third collar part 32A of the locking claw 32. As a result, the lower grill 16 is locked to the bumper cover 14 (as shown in FIG. 6).

  Next, the pressing piece 40 of the lower grill 16 is rotated around the integral hinge 38, and the fastening portion 40B of the pressing piece 40 is fastened to the boss portion 34 by the screw 44 (the state shown in FIGS. 2 and 3). As a result, the protrusion 46 and the rib 48 provided on the cantilever 40C of the pressing piece 40 abut on the upper side surface of the locking claw 28 of the bumper cover 14, and press the locking claw 28 toward the abutting portion 26. . Thereby, since the latching claw 28 is clamped between the contact portion 26 and the pressing piece 40, the lower grill 16 can be firmly coupled to the bumper cover 14 by the clamping force.

  That is, in the present embodiment, the fastening force in the vehicle front-rear direction (horizontal direction) by the screw 44 can be converted into the holding force in the vehicle vertical direction of the locking claw 28 by the cantilever portion 40C and the contact portion 26. Therefore, the engagement state between the contact portion 26 and the locking claw 28 (the hooked state between the first flange portion 28A and the second flange portion 26A) can be reliably maintained. Thereby, the unnecessary drop-off of the lower grill 16 from the bumper cover 14 can be prevented. Moreover, since the screw 44 is screwed in the horizontal direction, the fastening operation of the screw 44 can be facilitated.

  Further, in the present embodiment, since the boss portion 34 is provided on the lower grill 16, it is not necessary to provide the boss portion 34 on the bumper cover 14. Therefore, it is possible to avoid the occurrence of molding defects such as so-called sink marks on the design surface of the bumper cover 14. That is, when the pressing piece 102 is fastened to the boss portion 100 provided on the back surface of the bumper cover 14 as in the comparative example shown in FIG. Although molding defects occur, in the present embodiment, since it is not necessary to provide a boss portion on the bumper cover 14, it is possible to avoid such molding defects. Therefore, the productivity of the bumper cover 14 can be improved.

  Moreover, in this embodiment, since the lower end side of the fastening surface 35 of the boss part 34 is retracted in the screwing direction (front direction of the vehicle) of the screw 44, by adjusting the screwing amount of the screw 44 into the boss part 34, The pressing force of the locking claw 28 by the pressing piece 40 can be adjusted, and the clamping force of the locking claw 28 can be adjusted with a simple configuration. That is, when the screw 44 is tightened, the lower end side of the fastening portion 40B is bent toward the fastening surface 35 side by further tightening the screw 44 from the state where the fastening portion 40B is fastened to the upper end side of the fastening surface 35 (shown in FIG. 4). I can do it. Thereby, the protrusion 48 of the cantilever 40C can be strongly pressed against the upper side surface of the locking claw 28 (the pressing forces F1 and F2 can be increased). Thereby, since the clamping force of the latching claw 28 by the pressing piece 40 and the contact part 26 can be increased, the attachment strength of the lower grill 16 with respect to the bumper cover 14 can be improved.

  In addition, by changing the inclination angle θ (see FIG. 8) of the fastening surface 35 of the boss portion 34, the amount of additional tightening of the screw 44 (the amount by which the lower end side of the fastening portion 35 is bent) can be changed. The magnitude of the pressing force by the cantilever 40C can be easily changed. Therefore, the required clamping force (fastening force) can be set easily.

  Further, in this embodiment, if the screw 44 is removed from the boss portion 34, the pressing (holding) of the locking claw 28 by the pressing piece 40 is released, so that the lower grill 16 can be removed from the bumper cover 14. Therefore, even if it becomes necessary to replace the lower grill 16 or the like, it can be easily replaced.

  Furthermore, in this embodiment, the pressing piece 40 is formed integrally with the boss portion 34 of the lower grill 16 via the integral hinge 38. For this reason, compared with the case where the press piece 40 is shape | molded separately from the lower grille 16, the number of metal mold | dies for shaping | molding can be decreased and manufacturing cost can be reduced. In addition, since it is not necessary to consider the alignment and variation when the pressing piece 40 is fastened to the boss portion 34, the fastening state of the pressing piece 40 with respect to the boss portion 34 can be improved. Thereby, the pressing state of the locking claw 28 by the pressing piece 40 can be made favorable.

  In the above embodiment, the pressing piece 40 is formed integrally with the boss portion 34 (lower grille 16). However, the present invention is not limited to this, and the pressing piece 40 is separate from the lower grille 16 (auxiliary part). You may make it the structure shape | molded.

  Moreover, in the said embodiment, although the press piece 40 was made into the structure formed in the cross-sectional substantially crank shape, this invention is not limited to this, The shape of the press piece 40 can be set and changed suitably.

  Moreover, although the said embodiment demonstrated the case where this invention was applied with respect to the attachment structure for attaching the lower grille 16 to the bumper cover 14, not only this but this invention is an auxiliary component with respect to a resin component. Any mounting structure for mounting (other parts) can be applied. For example, the present invention can be applied to an attachment structure for attaching a fog cover to a bumper cover and an attachment structure for attaching a step board to the bumper cover. Further, the auxiliary component is not limited to a resin component, and may be a metal component.

  The present invention has been described with reference to the embodiment. However, the above embodiment is merely an example, and various modifications can be made without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.

12 Vehicle 14 Bumper cover (resin parts)
16 Lower grille (auxiliary parts)
26 Contact part 26A 2nd collar part 28 Locking piece (locking part)
28A 1st collar part 34 Boss part 35 Fastening surface 38 Integral hinge 40 Pressing piece 40B Fastening part 40C Cantilever part 44 Screw (screw member)
46 protrusion

Claims (7)

A resin part having a locking part;
An auxiliary part having a contact part that contacts one side of the locking part, and a boss part disposed on the other side of the locking part;
Wherein is fastened to the boss portion in contact with the other side of the locking portion, the pressing piece presses press the said locking unit to the contact portion is a direction different from a direction to be fastened,
Mounting structure to resin parts equipped with   The pressing piece is fastened to the boss portion by a screw member, and the pressing force of the locking portion by the pressing piece can be adjusted by adjusting the screwing amount of the screw member into the boss portion. The component mounting structure to a resin component according to claim 1, wherein the component mounting structure is a resin component.   The component attachment to the resin component according to claim 2, wherein one side of a fastening surface to which the pressing piece is fastened is retracted in the screwing direction of the screw member with respect to the other side of the boss portion. Construction.   4. The auxiliary component and the pressing piece are formed of a resin material, and the pressing piece is formed integrally with the boss portion through an integral hinge. The component attachment structure to the resin component according to any one of the above. The pressing piece comprises a fastening section fastened to the boss portion, extending from the fastening portion, it abuts against the other side of the locking portion in the fastening state, pressing to cantilever the front Symbol locking portion The component mounting structure to a resin component according to any one of claims 1 to 4, wherein the component mounting structure has a portion.   6. The component mounting structure to a resin component according to claim 5, wherein a projection is provided on a tip end side of the cantilever portion, and the projection abuts on the locking portion.   The said latching | locking part is provided with the 1st eaves part, The said contact part is provided with the 2nd eaves part engaged with the said 1st eaves part. Item 7. A part mounting structure to a resin part according to any one of Items 6 to 7.

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