Automobile front end frame structure formed by injection molding of metal insert

Abstract

The utility model relates to the technical field of automobile front-end frame structures, in particular to a metal insert injection molding automobile front-end frame structure, which comprises a frame body, a plurality of mounting holes are arranged in the frame body, insert nuts are mounted in the mounting holes through insert injection molding, flat surfaces are arranged at the end parts of the insert nuts, and the metal insert injection molding front-end frame structure is arranged on the flat surfaces. An annular anti-disengaging groove is formed in the side wall of the insert nut. And the inner diameter of the insert nut is smaller than the diameter of the mounting hole. According to the automobile front end frame structure formed by injection molding of the metal insert, the insert nut is installed in the frame body in an embedded and injection molding mode, injection molding machining can be completed directly through an injection mold, riveting equipment or hot pressing equipment does not need to be additionally invested, cost is reduced, the side wall of the insert nut is further provided with an annular anti-disengaging groove, and the structure is simple and convenient. By means of the design, the nut is effectively prevented from falling off in the installation or use process, and the structural stability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile front-end frame structures, in particular to an automobile front-end frame structure with metal inserts injection-molded. Background Art

[0002] The front-end frame is a component found in all current vehicles and is an essential functional component. Its function is simply described as follows: first, the front-end frame is fastened to the body-in-white (BIW) with bolts, and then other front-end exterior components and functional parts (such as headlights, radiators, speakers, condensers, front anti-collision beams, wiring harnesses, sensors, etc.) are assembled and fixed to the front-end frame. The connection between these components is generally achieved by tightening bolts and nuts on the front-end frame.

[0003] In existing automotive front-end frame manufacturing, the frame body is conventionally injection molded, and then the metal nuts are embedded into the frame body through a subsequent manufacturing process (riveting or hot pressing). Both riveting and hot pressing require an additional manufacturing step and investment in riveting or hot pressing equipment, resulting in increased manufacturing steps, increased costs, and increased production space.

[0004] Therefore, it is necessary to provide a metal insert injection molded automobile front end frame structure to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a metal insert injection-molded automobile front-end frame structure.

[0006] The utility model provides a metal insert injection-molded automobile front-end frame structure, wherein the front-end frame comprises a frame body, wherein a plurality of mounting holes are provided in the frame body, and insert nuts are installed in the mounting holes by insert injection molding, and the ends of the insert nuts are provided with flat surfaces, and the side walls of the insert nuts are provided with an annular anti-slip groove.

[0007] Preferably, the inner diameter of the insert nut is smaller than the diameter of the mounting hole.

[0008] Preferably, the flat surface extends outside the frame body.

[0009] Preferably, the frame body is provided with a convex portion opposite to the mounting hole.

[0010] Preferably, the side wall of the convex portion is provided with reinforcing ribs.

[0011] Compared with the related art, the utility model provides the following beneficial effects: by embedding the insert nut into the frame body for injection molding, the injection molding process can be completed directly using an injection mold, without the need for additional investment in riveting equipment or hot pressing equipment, thereby reducing costs. The side wall of the insert nut is also provided with an annular anti-falling groove. This design effectively prevents the nut from falling off during installation or use, thereby enhancing the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the relative positions of the frame body and the insert nut of the present utility model;

[0014] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0015] Figure 4 For the utility model Figure 3 A magnified schematic diagram of area A in the middle;

[0016] Figure 5 This is a schematic structural diagram of the insert nut of the present invention;

[0017] Figure 6 This is the injection molding flow chart of the utility model.

[0018] Numbers in the figure: 1, reinforcing rib; 2, frame body; 3, mounting hole; 4, insert nut; 5, flat surface; 6, annular anti-slip groove; 7, convex part. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0020] Please refer to Figures 1 to 6 A metal insert-molded automotive front-end frame structure comprises a frame body 2 with several ingeniously designed mounting holes 3. These mounting holes 3 are not simply hollow; instead, they are securely mounted with insert nuts 4 through insert molding. The insert nut 4 is unique in that its end features a flat surface 5, meticulously designed to extend beyond the frame body 2 to facilitate subsequent connection and assembly operations. Furthermore, the sidewalls of the insert nut 4 are also equipped with an annular anti-slip groove 6, which effectively prevents the nut from falling off during installation or use, enhancing the structural stability.

[0021] The inner diameter of the insert nut 4 is smaller than the diameter of the mounting hole 3 .

[0022] A protrusion 7 is cleverly positioned on the frame body 2 directly opposite the mounting hole 3. This design not only enhances the strength of the frame in this area but also provides better support and positioning for the insert nut. To further enhance structural stability, reinforcing ribs 1 are added to the sidewalls of the protrusion 7. This detailed design effectively disperses stress and improves the durability and reliability of the entire front-end frame.

[0023] It should be emphasized that the injection molding of the insert nut has special requirements for the product structure. The structural cross-section design of the frame body 2 and the insert nut 4 is as follows. The width of the injection molding sealing surface of the insert nut 4 should be ≥0.5mm. If the sealing surface width is too small, it will cause overflow and blockage of the hole:

[0024] The front-end frame mold requires pins on both the cavity and core sides to secure the insert nut. The core-side pins also require magnets to attract the insert nut.

[0025] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A metal insert injection molded automobile front end frame structure, characterized in that: The front end frame comprises a frame body (2), a plurality of mounting holes (3) are provided in the frame body (2), an insert nut (4) is installed in the mounting hole (3) by insert injection molding, the end of the insert nut (4) is provided with a flat surface (5), and the side wall of the insert nut (4) is provided with an annular anti-slip groove (6).

2. The metal insert injection molded automobile front end frame structure according to claim 1, characterized in that: The inner diameter of the insert nut (4) is smaller than the diameter of the mounting hole (3).

3. The metal insert injection molded automobile front end frame structure according to claim 1, characterized in that: The flat surface (5) extends outside the frame body (2).

4. The metal insert injection molded automobile front end frame structure according to claim 1, characterized in that: The frame body (2) is provided with a convex portion (7) opposite to the mounting hole (3).

5. The metal insert injection molded automobile front end frame structure according to claim 4, characterized in that: The side wall of the convex portion (7) is provided with a reinforcing rib (1).

Images