CN210289455U

CN210289455U - Injection molding component for vehicle door handle

Info

Publication number: CN210289455U
Application number: CN201920625856.6U
Authority: CN
Inventors: 张自财
Original assignee: Kunshan Changying Precision Technology Co ltd
Current assignee: Kunshan Changying Precision Technology Co ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-04-10
Anticipated expiration: 2029-05-05

Abstract

An injection molding assembly of a vehicle door handle comprises a first injection molding part, a plurality of terminals integrally formed in the first injection molding part and a second injection molding part formed on the first injection molding part, wherein the first injection molding part comprises a combination surface combined with the second injection molding part, a rough structure is arranged on the combination surface, and the rough structure and the second injection molding part are fused into a whole; the first injection molding part and the second injection molding part of the injection molding component of the vehicle door handle cannot crack.

Description

Injection molding component for vehicle door handle

Technical Field

The application relates to the field of injection molding, in particular to an injection molding component of a vehicle door handle.

Background

In the prior art, an injection molding component of a vehicle door handle needs to form a part of terminals in the interior, and the terminals are firstly formed in the interior through first injection molding; and performing secondary injection molding on the first injection molding part to form a second injection molding part covering the first injection molding part, wherein a layered structure is easily formed and the second injection molding part is relatively easy to crack when the joint between the second injection molding part and the first injection molding part is not subjected to special treatment.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a door handle injection-molded component for a vehicle, which can achieve better coupling force between the first and second injection-molded parts.

For solving above-mentioned technical problem, the application provides a door handle subassembly of moulding plastics for vehicle, including first injection molding, integrated into one piece in a plurality of terminals in the first injection molding and the shaping in second injection molding on the first injection molding, first injection molding include with the faying face that the second injection molding combines, be equipped with coarse structure on the faying face, coarse structure with the second injection molding fuses as an organic whole.

Preferably, the roughness structure is a raised grain structure.

Preferably, the roughness structure is a plurality of bumps.

Preferably, when the coarse structure is used for injection molding of the second injection molding part, molten plastic fills the coarse structure, and the salient points or the raised grains of the coarse structure absorb heat to melt and are fused with the molten plastic of the second injection molding part into a whole.

Preferably, a mold used in injection molding of the first injection molded part is provided with a rough surface at a position corresponding to the joint surface to form the rough structure during injection molding.

Preferably, the joint surface is further provided with a plurality of hole structures, and the hole structures are filled with molten plastic during injection molding of the second injection molding part so that the first injection molding part and the second injection molding part are combined more tightly.

This application automobile-used door handle subassembly of moulding plastics forms coarse structure through forming on the faying face at first injection molding, when moulding plastics for the second time, absorbs more melting plastic heat and makes the mat surface melt and fuse as overall structure with the melting plastic of injection molding for the second time, and can not lead to the fracture problem.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

FIG. 1 is a perspective view of a molded first injection molded part and a molded terminal of the injection molded component of the door handle for a vehicle according to the present invention;

FIG. 2 is a schematic view of the bonding surface of a first injection molded part of the injection molded component of the vehicle door handle of the present application;

FIG. 3 is a perspective view of a second injection molded part of the injection molded vehicle door handle assembly of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.

Referring to fig. 1 to 3, the injection molded component of the vehicle door handle of the present application includes a first injection molded part 10, a plurality of terminals 20 integrally molded in the first injection molded part 10, and a second injection molded part 30 molded on the first injection molded part 10.

The first injection molding part 10 and the terminal 20 are molded into a whole through in-mold injection molding, and the first injection molding part 10 comprises a bonding surface 11 and a plurality of hole structures 12 formed on the first injection molding part 10. The joint surface 11 is formed with a rough structure 13, and the rough structure 13 is a plurality of raised wavy lines or irregular salient points. The roughness 13 increases the specific surface area of the bonding surface of the first injection-molded part 10.

The forming mold (not shown) for the first injection molding is provided with a rough surface corresponding to the bonding surface 11 of the first injection molded part 10 to form the rough structure 13.

When the second injection molding part 30 is injection molded for the second time, the molten plastic material fills the joint surface 11 of the first injection molding part 10, and the joint surface 11 absorbs more heat during the second injection molding because the rough structure 13 increases the specific surface area, and the heat can melt the salient points or the raised grains of the rough structure 13 and combine with the newly injected molten plastic to form a structure that combines the joint surface 11 of the first injection molding part 10 and the joint surface 11 of the second injection molding part 30 into a whole. The molten plastic also fills the hole structure 12 to make the two bonded together more tightly.

This automobile-used door handle subassembly of moulding plastics forms coarse structure 13 on the faying face 11 of first injection molding 10, when moulding plastics for the second time, absorbs more melting plastic heat and makes the matte melt with the melting plastic of second injection molding fuse as overall structure, and can not lead to the fracture problem.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The injection molding component for the vehicle door handle comprises a first injection molding part, a plurality of terminals integrally formed in the first injection molding part and a second injection molding part formed on the first injection molding part, and is characterized in that the first injection molding part comprises a bonding surface combined with the second injection molding part, a rough structure is arranged on the bonding surface, and the rough structure and the second injection molding part are fused into a whole.

2. The door handle injection molded assembly according to claim 1, wherein the roughness structure is a wave structure.

3. The injection molded door handle assembly of claim 1 wherein the asperity is a plurality of raised points.

4. The injection-molded door handle assembly according to claim 2 or 3, wherein the roughened structure is filled with molten plastic when the second injection-molded part is injection-molded, and the raised points or the raised ridges of the roughened structure absorb heat to melt and fuse with the molten plastic of the second injection-molded part.

5. The injection-molded door handle assembly according to claim 1, wherein a mold used in injection-molding the first injection-molded part is provided with a rough surface at a position corresponding to the bonding surface to form the rough structure upon injection-molding.

6. The door handle injection molded assembly of claim 1 wherein the bonding surface is further provided with a plurality of hole structures, and molten plastic during injection molding of the second injection molded part fills the hole structures to tightly bond the first injection molded part and the second injection molded part.