Embedded thread type aluminum alloy structure, damping spring mounting support and automobile

Abstract

The utility model provides an embedded thread type aluminum alloy structure, a damping spring mounting support and an automobile, the embedded thread type aluminum alloy structure comprises an aluminum alloy main body, the aluminum alloy main body is provided with a connecting surface, and the connecting surface is provided with at least one mounting hole; and the threaded nesting sleeve is made of steel and provided with internal threads, the threaded nesting sleeve is embedded in the mounting hole, and the section of the threaded nesting sleeve is non-circular. The steel threaded nesting sleeve is embedded in the aluminum alloy structure, so that the connecting strength of the aluminum alloy structure and other structures is improved on the basis of keeping the light weight of the aluminum alloy structure.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of automobile manufacturing, and particularly relates to an embedded-thread aluminum alloy structure, a shock absorber spring mounting bracket, and an automobile. Background Art

[0002] Currently, the main connection methods between different components on a vehicle body are riveting, welding, screwing, etc. For the screwing connection method, carbon steel parts can directly weld nuts on the steel part substrate to achieve connection. However, for the consideration of reducing the vehicle body weight in new energy vehicles, a large number of aluminum alloy structures are used. There are problems such as high substrate strength at the welding joint and welding defects when directly welding nuts on the aluminum alloy components. Moreover, the aluminum alloy is soft. If threads are directly machined on the aluminum alloy structure and then connected to the structure through steel bolts, there is a problem of low connection strength. In addition, the friction between the steel bolt and the aluminum alloy thread during the tightening and loosening process will cause thread wear, easily leading to the failure of the screwed connection. Summary of the Invention

[0003] In view of the above defects or deficiencies in the prior art, it is desirable to provide an embedded-thread aluminum alloy structure, a shock absorber spring mounting bracket, and an automobile to solve the above problems.

[0004] The first aspect of the present application provides an embedded-thread aluminum alloy structure, including

[0005] an aluminum alloy main body, on which a connection surface is provided, and at least one mounting hole is provided on the connection surface;

[0006] a thread insert, which is made of steel and has internal threads, and the thread insert is embedded in the mounting hole, and the cross-section of the thread insert is non-circular.

[0007] According to the technical solution provided by the embodiment of the present application, a plurality of grooves are arranged along the axial direction of the thread insert on the outer wall of the thread insert, and the grooves cooperate with the outer wall of the thread insert to form a clamping structure.

[0008] According to the technical solution provided by the embodiment of the present application, the aluminum alloy main body is formed outside the thread insert by an injection molding method.

[0009] According to the technical solution provided by the embodiment of the present application, one end face of the thread insert is placed inside the mounting hole, and the other end face is placed outside the mounting hole.

[0010] According to the technical solution provided by the embodiment of the present application, the distance between the end face of the thread insert placed outside the mounting hole and the connection surface is 3 - 4 mm.

[0011] The second aspect of the present application provides an automotive shock absorber spring mounting bracket, which includes a base, a surrounding plate, and the embedded threaded aluminum alloy structure as described in any one of the above; the aluminum alloy main body is integrally formed on the base, and the surrounding plate is arranged on the outer peripheral side of the connection surface and integrally formed with the aluminum alloy main body.

[0012] The third aspect of the present application provides an automobile, which includes an automobile body and the above-mentioned automotive shock absorber spring mounting bracket.

[0013] Compared with the prior art, the beneficial effects of the present application are as follows: when producing the aluminum alloy structure, a steel threaded insert is embedded in the aluminum alloy structure in advance, so that when the aluminum alloy component is connected to other structures by steel bolts, screw connection can be carried out with the help of the threaded insert, which not only ensures the light weight of the structure but also improves the structural strength and stability of the connection; by setting the cross-section of the threaded insert to be non-circular, relative rotation of the threaded insert with respect to the aluminum alloy main body is avoided when screwing with the steel bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more apparent:

[0015] Figure 1 Structural sectional view of the embedded threaded aluminum alloy structure provided for Embodiment 1;

[0016] Figure 2 Structural schematic diagram of the automotive shock absorber spring mounting bracket provided for Embodiment 2;

[0017] Figure 3 For Figure 2 Structural schematic diagram of another perspective of the shown automotive shock absorber spring mounting bracket;

[0018] Figure 4 For the connection schematic diagram of the shock absorber spring and Figure 2 the shown automotive shock absorber spring mounting bracket.

[0019] Reference numerals in the drawings: 1, aluminum alloy main body; 2, connection surface; 3, threaded insert; 4, groove; 5, base; 6, surrounding plate; 7, shock absorber spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention and are not intended to limit the invention. Additionally, it should be noted that for the sake of description, only the parts related to the invention are shown in the drawings.

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0022] Embodiment 1

[0023] Please refer to Figure 1 , the present application provides an embedded threaded aluminum alloy structure, including:

[0024] An aluminum alloy main body 1, on which a connection surface 2 is provided, and at least one mounting hole is provided on the connection surface 2;

[0025] A threaded insert 3, which is made of steel and has an internal thread. The threaded insert 3 is embedded in the mounting hole, and the cross-section of the threaded insert 3 is non-circular.

[0026] Specifically, on one side of the aluminum alloy main body 1 for connecting with an external structure, a connection surface 2 is formed. The connection surface 2 is a plane. When the aluminum alloy main body 1 is produced, the threaded insert 3 is embedded on one side close to the connection surface 2. The threaded insert 3 is a steel component, and the cross-section of the threaded insert 3 is non-circular. This is set to prevent the threaded insert 3 from rotating relative to the aluminum alloy main body 1 when screwing with a steel bolt. Optionally, the cross-sectional shape of the threaded insert 3 is a quasi-elliptical shape in which a pair of opposite side walls are parallel to each other and the other pair of opposite side walls are arc-shaped; a through hole with a circular cross-section is formed on the threaded insert 3, and an internal thread is provided in the through hole. At least one of the mounting holes is provided on the connection surface 2 of each aluminum alloy main body 1. When there is one mounting hole, it can be connected to a steel bolt through one threaded insert 3. When there are multiple mounting holes, it can be connected to multiple steel bolts through multiple threaded inserts 3.

[0027] When the aluminum alloy structure provided in this embodiment is connected to other structures, by screwing a steel bolt with the threaded insert 3, on the one hand, the connection strength between the aluminum alloy structure and other structures is improved, and the overall stability is maintained; on the other hand, the problem of thread failure caused by insufficient thread strength and easy wear when directly machining threads on the aluminum alloy structure is avoided. The aluminum alloy structure provided in this embodiment takes into account the advantages of connection strength and lightweight.

[0028] This embodiment only illustrates the cooperation between the aluminum alloy main body 1 and the threaded insert 3, and does not limit the specific type of the aluminum alloy main body 1. The aluminum alloy main body 1 can be any structure that needs to be screwed.

[0029] Furthermore, the outer wall of the threaded nesting 3 is provided with a plurality of grooves 4 arranged along the axial direction of the threaded nesting 3 , and the grooves 4 cooperate with the outer wall of the threaded nesting 3 to form a clamping structure.

[0030] Specifically, by arranging a plurality of grooves 4 on the outer wall of the threaded nesting 3, a protrusion is formed on the outer wall of the threaded nesting 3 between two adjacent grooves 4 relative to the groove 4, thereby achieving a snap connection when connected to the aluminum alloy body 1, thereby preventing the threaded nesting 3 from moving along its own axial direction and effectively preventing the threaded nesting 3 from falling off from the aluminum alloy body 1.

[0031] Furthermore, the aluminum alloy body 1 is formed outside the threaded nest 3 by injection molding.

[0032] Specifically, the embedded threaded aluminum alloy structure provided in this embodiment is formed by pouring. The specific production process is to pre-embed the threaded nesting 3 in the die-casting mold, and then inject the liquid aluminum alloy into the die-casting mold for die-casting according to the predetermined die-casting process parameters. The liquid aluminum alloy and the threaded nesting 3 are combined in a liquid-solid manner and are formed as a whole at one time. After the liquid aluminum alloy solidifies, the aluminum alloy structure is formed. The aluminum alloy structure and the threaded nesting 3 are produced by this production method. The bonding strength is high, and there is no need to apply glue between the aluminum alloy structure and the threaded nesting 3. Compared with the combination method of first machining the mounting hole in the aluminum alloy structure and then embedding the threaded nesting 3 in the aluminum alloy structure, it is not only convenient to form and stable in structure, but also saves the glue coating process.

[0033] Furthermore, one end surface of the threaded nest 3 is placed inside the mounting hole, and the other end surface is placed outside the mounting hole.

[0034] Specifically, the threaded nesting 3 extends in a direction perpendicular to the connecting surface 2, with one end face of the threaded nesting 3 buried in the mounting hole, and the other end face extending outside the mounting hole and parallel to the connecting surface 2. Such a configuration, on the one hand, prevents the steel bolts from contacting the aluminum alloy body 1 and causing wear of the aluminum alloy body 1 when connected with the steel bolts, and on the other hand, facilitates fixing the portion of the threaded nesting 3 extending out of the mounting hole to the die-casting mold during production of the aluminum alloy body 1, and facilitates demolding without interfering with the installation of other components.

[0035] Furthermore, the distance between the end surface of the threaded insert 3 outside the mounting hole and the connecting surface 2 is 3-4 mm.

[0036] Specifically, the dimension of the threaded insert 3 extending out of the mounting hole should not be too long or too short. If it is too long, it is likely to cause instability when connected to a steel bolt. If it is too short, it is inconvenient to fix the threaded insert 3 during production and also inconvenient for demolding.

[0037] Embodiment 2

[0038] Please refer to Figures 2 - 4 , this embodiment provides an automotive shock absorber spring mounting support, including a base 5, a surrounding plate 6, and the internally threaded aluminum alloy structure as described in any one of the above. The aluminum alloy main body 1 is integrally formed on the base 5, and the surrounding plate 6 is provided on the outer peripheral side of the connection surface 2 and is integrally formed with the aluminum alloy main body 1.

[0039] Specifically, both the base 5 and the surrounding plate 6 are made of aluminum alloy. The base 5, the surrounding plate 6, and the aluminum alloy main body 1 are integrally formed. The surrounding plate 6 is provided on the connection surface 2 of the aluminum alloy main body 1. The surrounding plate 6 includes three parts and surrounds three sides of the connection surface 2. The widths of the surrounding plates 6 on the opposite sides gradually increase from the direction away from the base 5 to the direction close to the base 5. An installation space for installing the shock absorber spring 7 is formed between the connection surface 2 and the surrounding plate 6. In this embodiment, if one mounting hole is provided on each aluminum alloy main body 1, then the base 5 is integrally formed with three aluminum alloy main bodies 1. If three mounting holes are provided on each aluminum alloy main body 1, then the base 5 is integrally formed with one aluminum alloy main body 1. The base 5, the surrounding plate 6, and the aluminum alloy structure are integrally formed by the processing method of the above aluminum alloy structure.

[0040] When installing the shock absorber spring 7 with the automotive shock absorber spring mounting support provided in this embodiment, place the shock absorber spring 7 into the installation space formed by the surrounding plate 6 and the base 5. Connect the shock absorber spring 7 and the automotive shock absorber spring mounting support by screwing three steel bolts into the threaded insert 3. Since the threaded insert 3 and the automotive shock absorber spring mounting support are an integral structure, it can ensure that the assembled whole can maintain high strength and stability under the action of complex working condition loads, improving the service life and safety of the vehicle.

[0041] Embodiment 3

[0042] This embodiment provides a vehicle, including a vehicle body and the automotive shock absorber spring mounting support as described in Embodiment 2.

[0043] The vehicle provided in this embodiment adopts the automotive shock absorber spring mounting support as described in Embodiment 2, so that the vehicle can meet the requirements of light weight while ensuring the structural strength.

[0044] The above description is only a preferred embodiment of the present application and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, a technical solution formed by mutually replacing the above features with technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. An embedded threaded aluminum alloy structure, characterized in that: include: An aluminum alloy body (1), wherein the aluminum alloy body (1) is provided with a connection surface (2), and the connection surface (2) is provided with at least one mounting hole; The threaded nest (3) is made of steel and is provided with an internal thread. The threaded nest (3) is embedded in the mounting hole, and the cross section of the threaded nest (3) is non-circular.

2. The internally-embedded threaded aluminum alloy structure according to claim 1, characterized in that: The outer wall of the threaded nest (3) is provided with a plurality of grooves (4) arranged along the axial direction of the threaded nest (3), and the grooves (4) cooperate with the outer wall of the threaded nest (3) to form a clamping structure.

3. The internally threaded aluminum alloy structure according to claim 2, characterized in that: The aluminum alloy body (1) is formed outside the threaded insert (3) by injection molding.

4. The internally-embedded threaded aluminum alloy structure according to claim 3, characterized in that: One end surface of the threaded nest (3) is placed inside the mounting hole, and the other end surface is placed outside the mounting hole.

5. The internally threaded aluminum alloy structure according to claim 4, characterized in that: The distance between the end surface of the threaded insert (3) outside the mounting hole and the connection surface (2) is 3-4 mm.

6. An automobile shock absorbing spring mounting support, characterized in that: It comprises a base (5), a surrounding plate (6) and an embedded threaded aluminum alloy structure as described in any one of claims 1 to 5; the aluminum alloy body (1) is integrally formed on the base (5), and the surrounding plate (6) is arranged on the outer peripheral side of the connecting surface (2) and is integrally formed with the aluminum alloy body (1).

7. A car, characterized in that: The invention comprises an automobile body and the automobile shock absorbing spring mounting support as claimed in claim 6.

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