Integrated aluminum alloy subframe

Abstract

This utility model relates to an integrated aluminum alloy subframe, belonging to the field of subframes. The subframe is integrally formed by high-pressure casting. The subframe is made of aluminum alloy, and its bottom has an open opening, within which multiple main reinforcing ribs are integrally formed. The beneficial effects of this utility model are: it achieves a high degree of integration of the various mounting parts of the subframe; it has better dimensional accuracy, eliminates the need for heat treatment after casting, simplifies the process, improves efficiency, and makes the process quality easier to control, saving manufacturing costs; compared with steel subframes, it achieves product lightweighting; and the subframe has an open "U"-shaped shell structure, achieving lightweighting, while the main reinforcing ribs ensure structural strength.

Description

Technical Field

[0001] This utility model relates to the field of subframes, specifically to an integrated aluminum alloy subframe. Background Technology

[0002] There are two types of car subframes: steel and aluminum alloy.

[0003] Existing steel full-frame rear subframes are heavy, have many parts, are complex to manufacture, and have poor corrosion resistance. Furthermore, steel full-frame rear subframes are mostly formed using stamping processes, which requires a large number of molds, results in low dimensional accuracy, and generates significant noise.

[0004] Existing aluminum alloy low-pressure casting rear subframes mostly employ welding of castings and extruded or stamped profiles, a complex process. Welding compromises dimensional accuracy, and the low-pressure casting process requires heat treatment, reducing production efficiency. Hollow aluminum alloy subframes also necessitate the creation of separate sand core molds, increasing costs and complicating quality control.

[0005] Therefore, how to simplify the production process of the subframe and save manufacturing costs is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by this utility model is how to simplify the production process of the subframe and save manufacturing costs.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an integrated aluminum alloy subframe, the subframe is integrally formed by high pressure casting, the subframe is made of aluminum alloy, the bottom of the subframe has an opening, and multiple main reinforcing ribs are integrally formed in the opening.

[0008] The beneficial effects of this utility model are: 1. The subframe adopts an integrated high-pressure casting design, which realizes a high degree of integration of the various mounting parts of the subframe.

[0009] 2. High-pressure casting is an integrated molding process with better dimensional accuracy. No heat treatment is required after casting, which simplifies the process, improves efficiency, and makes the quality of the process easier to control, thus saving manufacturing costs.

[0010] 3. The subframe is made of aluminum alloy, which is a lightweight material. Compared with steel subframes, it achieves product weight reduction. The subframe has an open "U"-shaped shell structure, which also achieves weight reduction. It is further reinforced with main body ribs to ensure structural strength.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Furthermore, the subframe is provided with a left front body mounting section and a right front body mounting section that run vertically through the left and right front sides, respectively.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the left front body mounting part and the right front body mounting part are used to connect with the front body.

[0014] Furthermore, the left and right rear sides of the subframe are respectively provided with a left rear body mounting part and a right rear body mounting part that run vertically through each other.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the left rear body mounting part and the right rear body mounting part are used to connect with the rear body.

[0016] Furthermore, the upper side of the subframe is provided with a left upper control arm front mounting part and a right upper control arm front mounting part on the left and right sides respectively.

[0017] Furthermore, the left and right sides of the lower side of the subframe are respectively provided with a left upper control arm rear mounting part and a right upper control arm rear mounting part. The left upper control arm rear mounting part is spaced behind the left upper control arm front mounting part, and the right upper control arm rear mounting part is spaced behind the right upper control arm front mounting part.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the front mounting part of the left upper control arm, the rear mounting part of the left upper control arm, the front mounting part of the right upper control arm, and the rear mounting part of the right upper control arm are respectively used to connect with the upper control arm at the corresponding position.

[0019] Furthermore, the left and right sides of the lower side of the subframe are respectively provided with a left toe-in mounting part and a right toe-in mounting part, and the left toe-in mounting part and the right toe-in mounting part are located below the left upper control arm front mounting part and the right upper control arm front mounting part, respectively.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the left toe mounting part and the right toe mounting part are used to connect with the left and right toe control arms, respectively.

[0021] Furthermore, the left and right sides of the middle part of the subframe are respectively provided with a left lower control arm mounting part and a right lower control arm mounting part.

[0022] The beneficial effect of adopting the above-mentioned further solution is that the left lower control arm mounting part and the right lower control arm mounting part are respectively used to connect with the left and right lower control arms.

[0023] Furthermore, the front end of the subframe is provided with a left front suspension bushing mounting part and a right front suspension bushing mounting part spaced apart on the left and right sides, and the rear parts of the left and right sides of the subframe are respectively provided with a left rear suspension bushing and a right rear suspension bushing that run through the left and right sides.

[0024] The beneficial effect of adopting the above-mentioned further solution is that both the left front suspension bushing mounting part and the right front suspension bushing mounting part are used to install the front suspension bushing, so as to facilitate the installation of the motor front suspension.

[0025] Furthermore, the subframe has a left-side stabilizer bar mounting section and a right-side stabilizer bar mounting section spaced apart at the rear end, both of which are plate-like structures extending downwards from the rear end.

[0026] The beneficial effect of adopting the above-mentioned further solution is that the left and right lateral stabilizer bar mounting parts are used to install lateral stabilizer bars. Since the mounting surface on the lateral stabilizer bar mounting part is located on the lower surface of the subframe body, that is, the shell structure opening surface of the subframe, the lateral stabilizer bar mounting surface is rotated at an angle to form an inverted L-shaped structure with the upper surface, and connected to the main body of the subframe.

[0027] Furthermore, the subframe includes two crossbeams and two longitudinal beams, the longitudinal beams are arranged in the front-to-back direction, the two longitudinal beams are spaced apart from each other on the left and right, and the two crossbeams are respectively fixed to the front and rear ends of the longitudinal beams.

[0028] The beneficial effects of adopting the above-mentioned further solution are: the subframe is composed of two crossbeams and two longitudinal beams forming an approximately grid-like structure, which is structurally stable and lightweight. Attached Figure Description

[0029] Figure 1 This is a top view of the integrated aluminum alloy subframe of this utility model; Figure 2 This is a bottom view of the integrated aluminum alloy subframe of this utility model; Figure 3 for Figure 2 Left view of the integrated aluminum alloy subframe.

[0030] The attached diagram lists the components represented by each number as follows: 1. Left front body mounting part; 2. Left upper control arm front mounting part; 3. Right toe-in mounting part; 4. Left lower control arm mounting part; 5. Right upper control arm rear mounting part; 6. Left rear suspension bushing; 7. Left rear body mounting part; 8. Left stabilizer bar mounting part; 9. Right stabilizer bar mounting part; 10. Right rear body mounting part; 11. Right rear suspension bushing; 12. Right lower control arm mounting part; 13. Left toe-in mounting part; 14. Right upper control arm front mounting part; 15. Right front body mounting part; 16. Right front suspension bushing mounting part; 17. Left front suspension bushing mounting part; 18. Left upper control arm rear mounting part; 19. Bracket reinforcement rib. Detailed Implementation

[0031] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0032] Example 1 like Figures 1-3 As shown, this embodiment provides an integrated aluminum alloy subframe. The subframe is integrally formed by high-pressure casting. The subframe is made of aluminum alloy. The bottom of the subframe has an opening, and multiple main reinforcing ribs are integrally formed in the opening.

[0033] The beneficial effects are: 1. The subframe adopts an integrated high-pressure casting design, which realizes a high degree of integration of the various mounting parts of the subframe.

[0034] 2. High-pressure casting is an integrated molding process with better dimensional accuracy. No heat treatment is required after casting, which simplifies the process, improves efficiency, and makes the quality of the process easier to control, thus saving manufacturing costs.

[0035] 3. The subframe is made of aluminum alloy, which is a lightweight material. Compared with steel subframes, it achieves product weight reduction. The subframe has an open "U"-shaped shell structure, which also achieves weight reduction. It is further reinforced with main body ribs to ensure structural strength.

[0036] In this embodiment, the high-pressure casting integral molding is also called high-pressure integrated die casting.

[0037] Based on the above technical solution, the left front side and right front side of the subframe are respectively provided with a left front body mounting part 1 and a right front body mounting part 15 that run vertically through each other.

[0038] The left front body mounting part 1 and the right front body mounting part 15 are used to connect with the front body.

[0039] Based on the above technical solution, the left rear side and right rear side of the subframe are respectively provided with a left rear body mounting part 7 and a right rear body mounting part 10 that run vertically through each other.

[0040] The left rear body mounting part 7 and the right rear body mounting part 10 are used to connect with the rear body.

[0041] Based on the above technical solution, the left and right sides of the upper side of the subframe are respectively provided with a left upper control arm front mounting part 2 and a right upper control arm front mounting part 14, and the left and right sides of the lower side of the subframe are respectively provided with a left upper control arm rear mounting part 18 and a right upper control arm rear mounting part 5. The left upper control arm rear mounting part 18 is spaced behind the left upper control arm front mounting part 2, and the right upper control arm rear mounting part 5 is spaced behind the right upper control arm front mounting part 14.

[0042] The left upper control arm front mounting part 2, the left upper control arm rear mounting part 18, the right upper control arm front mounting part 14, and the right upper control arm rear mounting part 5 are respectively used to connect with the upper control arm at the corresponding position.

[0043] Specifically, such as Figure 1 and Figure 3 As shown, the left upper control arm front mounting part 2, the left upper control arm rear mounting part 18, the right upper control arm front mounting part 14, and the right upper control arm rear mounting part 5 are all U-shaped support structures with openings facing downwards.

[0044] like Figure 3 As shown, in order to ensure the rigidity and high-pressure casting performance of the left upper control arm rear mounting part 18 and the right upper control arm rear mounting part 5, a support reinforcing rib 19 is provided on the side with greater height (rear side). This can increase the rigidity of the left upper control arm rear mounting part 18 and the right upper control arm rear mounting part 5, disperse the stress concentrated at the root of the U-shaped support structure, and at the same time, allow the molten metal to be smoothly introduced into the support during casting, avoiding defects such as curling and shrinkage cavities.

[0045] Based on the above technical solution, the left and right sides of the lower side of the subframe are respectively provided with a left toe mounting part 13 and a right toe mounting part 3, and the left toe mounting part 13 and the right toe mounting part 3 are located below the left upper control arm front mounting part 2 and the right upper control arm front mounting part 14 respectively.

[0046] The left toe mounting part 13 and the right toe mounting part 3 are respectively used to connect with the left and right toe control arms.

[0047] Specifically, such as Figure 2 and Figure 3 As shown, both the left toe-in mounting section 13 and the right toe-in mounting section 3 are U-shaped support structures with downward openings.

[0048] Based on the above technical solution, the left and right sides of the middle part of the subframe are respectively provided with a left lower control arm mounting part 4 and a right lower control arm mounting part 12.

[0049] The left lower control arm mounting part 4 and the right lower control arm mounting part 12 are respectively used to connect with the left and right lower control arms.

[0050] Specifically, the left lower control arm mounting part 4 is located between the left upper control arm front mounting part 2 and the left upper control arm rear mounting part 18; the right lower control arm mounting part 12 is located between the right upper control arm front mounting part 14 and the right upper control arm rear mounting part 5.

[0051] Specifically, the left lower control arm mounting part 4 and the right lower control arm mounting part 12 are U-shaped support structures with openings facing left and right, respectively.

[0052] Based on the above technical solution, the front end of the subframe is provided with a left front suspension bushing mounting part 17 and a right front suspension bushing mounting part 16 spaced apart on the left and right sides, and the rear parts of the left and right sides of the subframe are respectively provided with a left rear suspension bushing 6 and a right rear suspension bushing 11 that pass through each other.

[0053] Both the left front suspension bushing mounting part 17 and the right front suspension bushing mounting part 16 are used to install the front suspension bushing, so as to facilitate the installation of the motor front suspension.

[0054] Based on the above technical solution, the rear end of the subframe is provided with a left lateral stabilizer bar mounting part 8 and a right lateral stabilizer bar mounting part 9 spaced apart on the left and right sides. Both the left lateral stabilizer bar mounting part 8 and the right lateral stabilizer bar mounting part 9 are plate-shaped structures extending downward from the rear end.

[0055] The left-side stabilizer bar mounting section 8 and the right-side stabilizer bar mounting section 9 are used to mount the stabilizer bars. Since the mounting surfaces on the stabilizer bar mounting sections are located on the lower surface of the subframe body, i.e., the shell structure opening of the subframe, the stabilizer bar mounting surfaces are rotated to form an inverted L-shaped structure with the upper surface and connected to the main body of the subframe.

[0056] Based on the above technical solution, the subframe includes two crossbeams and two longitudinal beams. The longitudinal beams are arranged in the front-to-back direction, and the two longitudinal beams are spaced apart on the left and right. The two crossbeams are respectively fixed to the front and rear ends of the longitudinal beams.

[0057] The subframe consists of two crossbeams and two longitudinal beams forming an approximately grid-like structure, which is structurally stable and lightweight.

[0058] Specifically, each of the crossbeams is connected to two longitudinal beams simultaneously.

[0059] like Figure 2 As shown, the bottom surfaces of the two crossbeams have openings to form a U-shaped shell structure, and multiple main reinforcing ribs are integrally formed within the openings.

[0060] In one preferred example, the subframe has a symmetrical structure.

[0061] Example 2 This embodiment provides a method for manufacturing an integrated aluminum alloy subframe. The subframe is integrally formed by high-pressure casting in a mold. The mold includes an upper mold, a lower mold, a side mold, and a core-pulling device. The upper mold, the lower mold, the side mold, and the core-pulling device together form a casting cavity for casting.

[0062] The beneficial effects are: since the subframe is a solid structure with an open bottom, the whole is formed by the upper and lower molds and side molds of the same set of molds in combination with the core-pulling process, which avoids the accumulation of debris on the opening of the subframe. At the same time, it reduces the number of mold segments and simplifies the process flow.

[0063] Specifically, the main structures of the left front body mounting part 1, the right front body mounting part 15, the left upper control arm front mounting part 2, the right upper control arm front mounting part 14, the left toe-in mounting part 13, the right toe-in mounting part 3, the left lower control arm mounting part 4, the right lower control arm mounting part 12, the left rear suspension bushing 6, the right rear suspension bushing 11, the left rear body mounting part 7, the right rear body mounting part 10, the left stabilizer bar mounting part 8, the right stabilizer bar mounting part 9, the left front suspension bushing mounting part 17, the right front suspension bushing mounting part 16, and the subframe are all formed by the upper and lower molds.

[0064] The left upper control arm front mounting part 2, the right upper control arm front mounting part 14, the left front suspension bushing mounting part 17, the right front suspension bushing mounting part 16, the left rear suspension bushing 6, and the right rear suspension bushing 11 require core-pulling molding. The left upper control arm rear mounting part 18 and the right upper control arm rear mounting part 5 are formed by side molds.

[0065] Since the height difference between the front mounting part 2 of the left upper control arm and the front mounting part 14 of the right upper control arm and the mounting part 4 of the left lower control arm and the mounting part 12 of the right lower control arm is large, and it is necessary to avoid the drive shaft, the side draft molding method is adopted.

[0066] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated aluminum alloy subframe, characterized in that, The subframe is integrally formed by high pressure casting. The subframe is made of aluminum alloy. The bottom of the subframe has an opening, and multiple main reinforcing ribs are integrally formed in the opening. The left front side and the right front side of the subframe are respectively provided with a left front body mounting part (1) and a right front body mounting part (15) that run vertically through. The left rear side and the right rear side of the subframe are respectively provided with a left rear body mounting part (7) and a right rear body mounting part (10) that run vertically through.

2. The integrated aluminum alloy subframe according to claim 1, characterized in that, The upper side of the subframe is provided with a left upper control arm front mounting part (2) and a right upper control arm front mounting part (14) on the left and right sides respectively.

3. The integrated aluminum alloy subframe according to claim 2, characterized in that, The left and right sides of the subframe are respectively provided with a left upper control arm rear mounting part (18) and a right upper control arm rear mounting part (5). The left upper control arm rear mounting part (18) is spaced behind the left upper control arm front mounting part (2), and the right upper control arm rear mounting part (5) is spaced behind the right upper control arm front mounting part (14).

4. The integrated aluminum alloy subframe according to claim 2, characterized in that, The left and right sides of the subframe are respectively provided with a left toe-in mounting part (13) and a right toe-in mounting part (3), and the left toe-in mounting part (13) and the right toe-in mounting part (3) are located below the left upper control arm front mounting part (2) and the right upper control arm front mounting part (14).

5. The integrated aluminum alloy subframe according to claim 1, characterized in that, The subframe has a left lower control arm mounting part (4) and a right lower control arm mounting part (12) on the left and right sides of the middle section, respectively.

6. The integrated aluminum alloy subframe according to claim 1, characterized in that, The front end of the subframe is provided with a left front suspension bushing mounting part (17) and a right front suspension bushing mounting part (16) spaced apart on the left and right sides. The rear parts of the left and right sides of the subframe are respectively provided with a left rear suspension bushing (6) and a right rear suspension bushing (11) that pass through each other.

7. The integrated aluminum alloy subframe according to claim 1, characterized in that, The subframe is provided with a left lateral stabilizer bar mounting part (8) and a right lateral stabilizer bar mounting part (9) at intervals on the left and right sides of the rear end. Both the left lateral stabilizer bar mounting part (8) and the right lateral stabilizer bar mounting part (9) are plate-shaped structures that extend downward from the rear end.

8. An integrated aluminum alloy subframe according to any one of claims 1-7, characterized in that, The subframe includes two crossbeams and two longitudinal beams. The longitudinal beams are arranged in the front-to-back direction, and the two longitudinal beams are spaced apart on the left and right. The two crossbeams are respectively fixed to the front and rear ends of the longitudinal beams.

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