Aluminum auxiliary frame with radiating rib structure

Abstract

The utility model discloses an aluminum auxiliary frame with a radiating rib structure, which comprises an aluminum auxiliary frame body, a plurality of concave weight reduction grooves are arranged on the aluminum auxiliary frame body, arc-shaped connecting parts are arranged on adjacent side walls of the weight reduction grooves, first radiating ribs are arranged on the arc-shaped connecting parts, and the radiating ribs are arranged on the first radiating ribs. A boss extending downwards is arranged at the bottom of the aluminum auxiliary frame body, an arc-shaped transition part is arranged at the position, close to the edge of the aluminum auxiliary frame body, of the boss, and a plurality of second heat dissipation ribs are arranged on the arc-shaped transition part. The first radiating ribs are ladder-shaped and comprise vertical ribs which are vertically and oppositely arranged on the arc-shaped connecting part, and a plurality of arc-shaped ribs are arranged on the vertical ribs at intervals in the vertical direction. The aluminum auxiliary frame can solve the problems that some surface positions (such as deep cavities and boss fillets) of an existing aluminum auxiliary frame are complex in structure, difficult in heat dissipation and prone to overheating, and consequently the areas are prone to shrinkage porosity and shrinkage cracks in the solidification process.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure aluminum die-casting heat dissipation, in particular to an aluminum subframe with a heat dissipation rib structure. Background Art

[0002] Aluminum subframes are essential structural components of modern automobiles, and their quality and performance are directly related to the vehicle's safety, comfort, and durability. Low-pressure casting (LPD) is widely used in the manufacture of aluminum subframes due to its ability to produce high-quality, complex-shaped castings. However, during the LPD process, certain surface locations (such as deep cavities and boss radius) are prone to overheating due to their complex structure and poor heat dissipation. This leads to defects such as shrinkage porosity and shrinkage cracking in these areas during solidification. Shrinkage porosity refers to the formation of small, dispersed pores within or on the surface of a casting, which weakens its mechanical properties, reducing its load-bearing capacity and service life. Shrinkage cracking refers to cracks caused by excessive internal stress during solidification. These cracks not only affect the casting's appearance but can also lead to fracture during use. Therefore, a design for a heat dissipation rib structure for aluminum subframes is proposed. This design effectively reduces the surface temperature at these defects, thereby ensuring sequential solidification and resulting in a densely structured casting. Utility Model Content

[0003] The utility model provides an aluminum subframe with a heat dissipation rib structure, which can solve the problem that certain surface positions of the existing aluminum subframe (such as deep cavities, boss rounded corners, etc.) are prone to overheating due to complex structure and difficulty in heat dissipation, resulting in shrinkage and cracking in these areas during the solidification process.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aluminum subframe with a heat dissipation rib structure, comprising an aluminum subframe body, wherein the aluminum subframe body is provided with a plurality of concave weight-reducing grooves, an arc-shaped connecting portion is provided at the adjacent side walls of the weight-reducing grooves, a first heat dissipation rib is provided at the arc-shaped connecting portion, a downwardly extending boss is provided at the bottom of the aluminum subframe body, an arc-shaped transition portion is provided at the edge of the boss close to the aluminum subframe body, and a plurality of second heat dissipation ribs are provided on the arc-shaped transition portion; the first heat dissipation rib is ladder-shaped, comprising vertical ribs vertically oppositely arranged on the arc-shaped connecting portion, the vertical ribs are arranged in contact with the surface of the arc-shaped connecting portion, and a plurality of arc-shaped ribs are spaced apart on the vertical ribs in the up and down directions. By adding the first and second heat dissipation ribs, the heat dissipation area is increased and the mold temperature is reduced, thereby meeting the casting process requirements of sequential solidification and solving the shrinkage cracking problem.

[0005] Preferably, the bottom of the vertical ribs may be optionally provided with curved ribs, and the curved ribs are located at the bottom of the weight-reducing grooves, which has a simple structure and increases the heat dissipation area.

[0006] Preferably, a plurality of reinforcing ribs are provided between the aluminum sub-frame body and the boss, and the second heat dissipation ribs are located between adjacent reinforcing ribs, and the reinforcing ribs increase the structural strength of the product.

[0007] Preferably, the cross-section of the second heat dissipation rib is V-shaped, and a curved chamfer is provided at the connection between the second heat dissipation rib and the curved transition portion, so that the structure is stable and the heat dissipation area is increased.

[0008] Preferably, the aluminum sub-frame body, the boss, the first heat dissipation rib and the second heat dissipation rib are integrally formed, which is easy to manufacture and has a good heat dissipation effect.

[0009] Preferably, a groove is provided in the boss, which has a simple structure.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] By adding heat dissipation ribs to areas of the casting prone to shrinkage and cracking, the heat dissipation area is effectively increased, significantly reducing mold temperature and thus minimizing defects such as shrinkage and cracking. The design of the heat dissipation ribs ensures solidification of the casting, further improving its structural density and mechanical properties, and extending its service life. This addresses the problem of overheating in certain areas of the existing aluminum subframe (such as deep cavities and boss fillets) due to their complex structure and difficulty dissipating heat. This problem leads to shrinkage and cracking in these areas during solidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0013] Figure 2 It is a three-dimensional structural diagram of the utility model from different angles;

[0014] Figure 3 This is a schematic structural diagram of the first heat dissipation rib of the present invention;

[0015] Figure 4 This is a schematic structural diagram of the first heat dissipation rib with curved ribs of the present invention;

[0016] Figure 5 This is a schematic structural diagram of the second heat dissipation rib of the present invention.

[0017] Reference numerals:

[0018] 1. Aluminum subframe body, 2. Weight reduction groove, 3. Arc-shaped connecting part, 4. First heat dissipation rib, 41. Vertical rib, 42. Curved rib, 43. Arc-shaped rib, 5. Boss, 51. Groove, 6. Arc-shaped transition part, 7. Second heat dissipation rib, 71. Arc-shaped chamfer, 8. Reinforcement rib. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] like Figure 1-5 As shown, the present invention aims to solve the problem that certain surface positions of the existing aluminum subframe, such as deep cavities and boss rounded corners, are prone to overheating due to complex structures and difficulty in heat dissipation, resulting in shrinkage and cracking in these areas during the solidification process. The present invention provides the following technical solutions: an aluminum subframe with a heat dissipation rib structure, comprising an aluminum subframe body 1, the aluminum subframe body 1 being provided with a plurality of concave weight-reducing grooves 2, arc-shaped connecting portions 3 being provided at adjacent side walls of the weight-reducing grooves 2, the arc-shaped connecting portions 3 being provided with first heat dissipation ribs 4, and the bottom of the aluminum subframe body 1 being provided with a downwardly extending boss 5. The boss 5 is provided with an arc-shaped transition portion 6 near the edge of the aluminum subframe body 1, and a plurality of second heat dissipation ribs 7 are provided on the arc-shaped transition portion 6; the first heat dissipation rib 4 is ladder-shaped, and includes vertical ribs 41 vertically arranged opposite to the arc-shaped connecting portion 3, and the vertical ribs 41 are arranged in contact with the surface of the arc-shaped connecting portion 3, and a plurality of arc-shaped ribs 43 are provided on the vertical ribs 41 at intervals in the up and down directions. By adding the first heat dissipation ribs 4 and the second heat dissipation ribs 7, the heat dissipation area is increased and the mold temperature is reduced, thereby meeting the requirements of the sequential solidification casting process and solving the shrinkage cracking problem.

[0021] In this embodiment, if Figure 4 As shown, the bottom of the vertical rib 41 may be optionally provided with a curved rib 42 , and the curved rib 42 is located at the bottom of the weight-reducing groove 2 , has a simple structure, and increases the heat dissipation area.

[0022] In this embodiment, if Figure 2 As shown, a plurality of reinforcing ribs 8 are provided between the aluminum sub-frame body 1 and the boss 5 , and the second heat dissipation ribs 7 are located between adjacent reinforcing ribs 8 , and the reinforcing ribs 8 increase the structural strength of the product.

[0023] In this embodiment, if Figure 5 As shown, the cross section of the second heat dissipating rib 7 is V-shaped, and an arc-shaped chamfer 71 is provided at the connection between the second heat dissipating rib 7 and the arc-shaped transition portion 6, which stabilizes the structure and increases the heat dissipation area.

[0024] In this embodiment, if Figure 1As shown, the aluminum sub-frame body 1, the boss 5, the first heat dissipation rib 4 and the second heat dissipation rib 7 are integrally formed, which is easy to manufacture and has a good heat dissipation effect.

[0025] In this embodiment, if Figure 1 As shown, a groove 51 is provided in the boss 5, and the structure is simple.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. An aluminum subframe with a heat dissipation rib structure, comprising an aluminum subframe body (1), characterized in that: The aluminum sub-frame body (1) is provided with a plurality of inwardly concave weight-reducing grooves (2), an arc-shaped connecting portion (3) is provided at the adjacent side walls of the weight-reducing groove (2), a first heat dissipation rib (4) is provided at the arc-shaped connecting portion (3), a downwardly extending boss (5) is provided at the bottom of the aluminum sub-frame body (1), an arc-shaped transition portion (6) is provided near the edge of the aluminum sub-frame body (1), and a plurality of second heat dissipation ribs (7) are provided on the arc-shaped transition portion (6); The first heat dissipation rib (4) is ladder-shaped and includes vertical ribs (41) arranged vertically relative to the arc-shaped connecting portion (3). The vertical ribs (41) are arranged in contact with the surface of the arc-shaped connecting portion (3). A plurality of arc-shaped ribs (43) are arranged on the vertical ribs (41) at intervals in the vertical direction.

2. The aluminum subframe with a heat dissipation rib structure according to claim 1, characterized in that: The bottom of the vertical rib (41) may be optionally provided with a curved rib (42), and the curved rib (42) is located at the bottom of the weight-reducing groove (2).

3. The aluminum subframe with a heat dissipation rib structure according to claim 1, characterized in that: A plurality of reinforcing ribs (8) are provided between the aluminum sub-frame body (1) and the boss (5), and the second heat dissipation ribs (7) are located between adjacent reinforcing ribs (8).

4. The aluminum subframe with a heat dissipation rib structure according to claim 1, characterized in that: The cross section of the second heat dissipation rib (7) is V-shaped, and an arc-shaped chamfer (71) is provided at the connection between the second heat dissipation rib (7) and the arc-shaped transition portion (6).

5. The aluminum subframe with a heat dissipation rib structure according to claim 1, characterized in that: The aluminum sub-frame body (1), the boss (5), the first heat dissipation rib (4) and the second heat dissipation rib (7) are integrally formed.

6. The aluminum subframe with a heat dissipation rib structure according to claim 1, characterized in that: A groove (51) is provided in the boss (5).

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