JPH0736842Y2 - Bonding structure of resin parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a joint structure of resin parts constituting a part of a body of an automobile or the like.

(Prior Art) A part of an automobile body, such as a molding or a bumper, may be manufactured by joining synthetic resin plates for the purpose of weight reduction. For example, as shown in FIG. 6, a molding and a bumper are joined to each other at the upper portion A of the rear wheel of the automobile 1.

Conventionally, such a coupling portion is formed by forming a step portion corresponding to the plate thickness of the other member at the end portion of the corresponding one member, providing a spring plate on the back surface of the end portion of the other member, and fitting and joining. There is a structure in which the step portion is sandwiched between the spring plates and the joint portion is fixed when the surface is flattened (see Japanese Utility Model Laid-Open No. 60-93547). Further, as shown in FIG. 7, the connecting portion has a plate member 2 having a U-shaped cross section,
Similarly, a plate member 3 having a stepped portion 3a reduced in plate thickness is provided, and when these two plate members 2 and 3 are joined, one plate member 2 is put on the stepped portion 3a of the other plate member 3. There were also structures.

(Problems to be Solved by the Invention) However, conventionally, the synthetic resin member thus mounted is weak to heat and poor in assembling property. When mounting this modified one, the stepped portion 3a of the plate member 3 cannot be smoothly covered on the U-shaped inside of the plate member 2, and
There was a problem that the joint part jumped up when it was thermally deformed after being covered. In the former case, in addition to the assembling work, the work of correcting the shape increases, which is a complicated work, and the joints are not aligned. In the case of the latter, the joint that has been deformed after mounting may be separated from the joint such as fitting,
It will shift.

The present invention, when connecting the ends of a pair of resin parts,
An object of the present invention is to provide a joint structure for resin parts, which facilitates alignment of the both at a joint position and holds the joint portion so that the joint portion does not shift after the joint.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides an end portion of a resin component on a side to be joined in a joining structure in which the end portions of two resin components are abutted and joined. One of the side surfaces is opened to form a concave shape, and a claw having a width in the abutting direction is provided so as to face each other from both edges, and a concave space having the claw is formed at the end of the resin part on the coupling side. Protruding the insertion part of the shape following the shape,
The coupling member attached to the member for mounting the two resin parts is provided with a fitting member having a shape that follows the shape of the concave space having the claws, and in the state where the two resin parts and the coupling member are assembled in the previous period, It is characterized in that the concave space having the claws of the resin component on the coupling side is fitted over both the aligned coupling member and the resin component on the coupling side.

(Operation) With the above-described configuration, first, the coupling member is applied to the end of the resin component on the coupled side, and the coupling member is pressed from the side opposite to the joining surface to the resin component on the coupled side. Insert and
Hold with your nails. At this time, if the joining member is manufactured in a block shape, it is strong against external force and can easily perform forcible work.In addition, if the end shape of the resin part on the joined side is slightly distorted, attach the joining member. With this, the cross-sectional shape of the end of the resin component on the joining side is corrected. The connecting member is attached to the member to which the two resin parts are attached, but by locating it inside the resin part on the connected side, the space for inserting the end of the resin part on the connecting side into the end of the resin part on the connected side. (A part of the concave space having the claw) is formed. In this state, the end of the resin component on the coupling side is inserted into the space. Further, even after the two resin components are distorted by heat or the like after mounting, the positions are held by the claws, so that the abutting state of the pair of resin components is maintained.

(Embodiment) As one embodiment of the present invention, a connecting structure of a bumper and a molding of an automobile will be described with reference to FIGS.

First, in a state before connection, as shown in FIG. 2, a large bumper (part to be connected) 4 and a molding 5 (part to be connected) which are formed of resin parts and conform to the shape of the automobile, and Separately, a block-shaped connecting member 6 that follows the end cross-sectional shape of the molding 5 is separately prepared.

The joint between the bumper 4 and the molding 5 is formed in a U-shaped cross-section with an opening on the vehicle body side to be mounted, and a stepped portion 9 described later is formed and closed on the tip end surface of the molding 5. . Further, claws 7, 7 having a width in the insertion direction of the molding 5 are provided so as to face each other at both edges of the opening at the end of the bumper 4, and the outer surface of the claw 7 is provided at the opening of the bumper 4. It is formed flush with both edges. Therefore, the end surface of the bumper 4 has a substantially C shape.

The outer peripheral shape of the molding 5 is the same as the outer peripheral shape of the bumper 4 in a cross-sectional shape orthogonal to the direction of contact with the bumper 4. At the end of the molding 5 that abuts the bumper 4, a stepped portion 9 reduced by the thickness of the resin component of the bumper 4 is formed.
Form an insertion portion. In other words, the step portion, that is, the insertion portion 9 has a shape that fits into the concave portion 8 formed by the main body of the bumper 4 and the claws 7, 7. Here, the concave space refers to the width of the claw of the concave portion 8 when the claw of the bumper 4 has a width in the insertion direction.

The coupling member 6 includes a fitting portion 6A that fits into a recess 8 formed at the end of the bumper 4, and a mounting portion that projects from the back surface of the fitting portion.
It consists of 10. Therefore, the fitting portion 6A has the same shape as the step portion 9 (insertion portion) of the molding 5. The mounting part 10 is a claw 7,7 facing each other.
Has a width located between the outer surfaces of the claws 7, 7 and the outer surface thereof is provided so as to be flush with the outer surface of the claws 7, 7 when the both are fitted to each other. Further, the coupling member 6 has two bolt holes 11 penetrating from the fitting portion 6A to the mounting portion 10.

Next, a case where the bumper 4 and the molding 5 are fixed to the vehicle body via the connecting member 6 will be described.

First, as shown in FIG. 1, a part of the connecting member 6 is fitted into the recess 8 of the bumper 4. At this time, the bolt hole 11 is in a fitting state such that it is not hidden by the bumper 4. Next car body
The end of the molding 5, which is attached to the mold 12, that is, the stepped portion 9 and the end of the connecting member 6 are aligned, and at this position, the connecting member 6 is attached to the vehicle body 12 with the bolt 13. Then, when the bumper 4 is slid along the connecting member 6, the end portion of the bumper 4 is sequentially guided by the connecting member 6 and the step portion 9 to be smoothly connected to the molding 5 side. In this state, the connecting member 6 is housed in the bumper 4, and the claws 7, 7 are connected to the connecting member 6.
It is located across the step 9. In this case, the mall 5
It may be lifted from 12, but it is better to attach it to the vehicle body 12 first.

The embodiment described above is about the joint between the bumper 4 and the molding 5, but if the joint is such that distortion occurs in other structural parts using resin parts, the mounting structure of the present invention can be used. Can be applied.

(Effects of the Invention) Since the present invention is configured as described above, the joining procedure is divided into two steps, and first, the joining member is placed in the concave space having the claws at the ends of the resin parts on the joined side. They are fitted together, so that the shape of the end on the joined side is corrected by the joining member. Since the joining member can be partially inserted and placed in the resin component on the joined side, the joining member can be fixed in alignment with the stepped portion (insertion portion) of the resin component on the joining side. The stepped portion at the end of the component can easily be put in the concave space on the coupled side. Further, the complexity of fitting the two resin parts from the beginning as in the conventional case is eliminated, and the workability of the assembling work can be improved. Further, since the joining member corrects the deformation of the resin part, the distortion of the joining portion is eliminated, and the appearance is improved without the influence of thermal deformation. Even if distortion occurs due to heat or the like after assembling the two resin components, the coupling member and the stepped portion are held by the claws of one of the resin components, so there is no separation deviation in the assembly of the two.

[Brief description of drawings]

FIG. 1 is a perspective view of a connecting portion in an embodiment of the present invention, FIG. 2 is a perspective view showing a state before assembly of the one shown in FIG. 1, and FIG. Fig. 4 is a plan view, Fig. 4 is a sectional view taken along the line IV-IV in Fig. 3, Fig. 5 is a sectional view taken along the line VV in Fig. 3, and Fig. 6 is an explanatory view showing a conventional joint portion in an automobile. FIG. 7 is a perspective view showing a conventional connecting portion. 4 ... Bumper, 5 ... Mall 6 ... Coupling member, 8 ... Recess

Claims (1)

[Scope of utility model registration request] 1. In a joining structure for joining ends of two resin parts by abutting each other, one end of each of the resin parts on the side to be joined is formed to have a concave cross section and both edges are formed. From the above, a claw having a width in the abutting direction is provided so as to face each other, and an insertion portion having a shape that follows the shape of the concave space having the claw is provided at the end of the resin component on the coupling side. The fitting member having a shape that follows the shape of the concave space having the claw is provided in the joining member that is attached to the member to which the resin component is attached, and in the state where the two resin components and the joining member are assembled, A resin component coupling structure, wherein a concave space having a claw of the resin component is fitted over both the aligned coupling member and the resin component on the coupling side.