Novel stamping and welding rear auxiliary frame

Abstract

The utility model discloses a novel stamping welding rear subframe, which comprises a front cross beam, a front upper control arm, a front lower control arm and a front lower swing arm supporting plate, the front upper control arm is arranged on the outer side of a longitudinal beam on the left side and the right side, a rear control arm is fixedly arranged on the outer side of the longitudinal beam, and a first reinforcing plate and a second reinforcing plate are arranged on the inner side of the front cross beam. A suspension support is fixedly installed at the top end of the front cross beam, a suspension reinforcing plate is fixedly installed on the inner side of the suspension support, the front lower swing arm supporting plate is fixedly connected with the longitudinal beam lower plate, the front upper control arm comprises a front support and a rear support, and the overall structural design of the front support structure of the front upper control arm is in an L shape. The novel auxiliary frame after stamping and welding is high in welding efficiency, the rigidity of the front control arm is improved, the stability of parts is improved, the phenomena that a split structure is poor in precision, difficult to assemble and the like due to welding deformation can be avoided, and part failure caused by excessive part deformation can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile chassis structural parts, in particular to a novel stamping and welding rear auxiliary frame. Background Art

[0002] Common chassis suspension structures in automobile design include McPherson independent suspension, double wishbone independent suspension, multi-link independent suspension, E-type four-link, etc. Regardless of the form of suspension structure, the subframe must be designed with front and rear control arms, which are connected to the wheel center of the vehicle. They are the main load-bearing parts to ensure the normal driving of the vehicle. Therefore, the structural design and welding method of the control arm are crucial to the overall performance and stability. The overlap method will affect the stiffness, strength, fatigue durability, etc. In order to ensure the normal use of the vehicle, avoid failure of the subframe due to insufficient performance of the front and rear control arm installation points, which in turn causes safety accidents.

[0003] The spring arm on the five-link subframe is the main component that bears lateral force, and has higher requirements for Y-direction stiffness. In order to improve the Y-direction stiffness of the lateral arm, the subframe usually connects a crossbeam to the left and right spring arm brackets, so that the left and right spring arm brackets are connected as a whole, thereby improving the stiffness of the spring arm point. This structure has the following disadvantages:

[0004] 1. The crossbar must span across the subframe, which requires a high space and reduces the layout space for the motor, exhaust pipe, bottom guard plate, etc. around the subframe;

[0005] 2. The crossbar is connected by bolts, and the stress at the connection is relatively large. The crossbar and the bracket need to be designed to be thicker, and the assembly process needs to be increased, which reduces the reliability of the connection and increases the cost and weight;

[0006] 3. The crossbar has limited effect on improving the Y-direction stiffness of the control arm.

[0007] The existing new stamping and welding rear subframe is connected by bolts, which makes the connection stability low, the assembly difficult, and the parts easy to fail; therefore, we propose a new stamping and welding rear subframe to solve the above problems. Utility Model Content

[0008] The utility model aims to provide a novel stamping and welding rear subframe to solve the problems mentioned in the above background technology that the existing novel stamping and welding rear subframe is connected by bolts, resulting in low connection stability, difficult assembly and easy failure of parts.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel stamped and welded rear subframe, comprising a front cross beam, a front upper control arm, a front lower control arm and a front lower swing arm support plate, the front upper control arm is installed on the outer sides of the left and right longitudinal beams, the rear control arm is fixedly installed on the outer sides of the longitudinal beams, a first reinforcement plate and a second reinforcement plate are provided on the inner side of the front cross beam, a suspension bracket is fixedly installed on the top end of the front cross beam, a suspension reinforcement plate is fixedly installed on the inner side of the suspension bracket, the front lower control arm is installed on the bottom of the longitudinal beam, and the front lower swing arm support plate is fixedly connected to the lower plate of the longitudinal beam.

[0010] Preferably, the front upper control arm includes a front bracket and a rear bracket.

[0011] Preferably, the overall structural design of the front bracket structure of the front upper control arm is 'L'-shaped.

[0012] Preferably, the front bracket of the front upper control arm is overlapped with the upper plate of the longitudinal beam and the upper plate of the front cross beam respectively through a flanging structure.

[0013] Preferably, the rear bracket of the front upper control arm is connected to the lower plate of the longitudinal beam through the front lower swing arm support plate.

[0014] Preferably, the front and rear plates of the rear control arm are overlapped and welded to the upper and lower surfaces of the longitudinal beam respectively.

[0015] Preferably, a first reinforcing plate and a second reinforcing plate are arranged on the lower side and both ends of the front and rear plates of the longitudinal beam.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the new stamping and welding subframe has high welding efficiency, the front control arm rigidity is improved, the stability of the parts is improved, and the split structure can be avoided from having poor precision and assembly difficulties due to welding deformation, and can reduce the failure of parts caused by excessive deformation of parts.

[0017] 1. A front upper control arm is provided. The front upper control arm is a split structure, which is divided into a front bracket and a rear bracket, making its structure simple and easy to weld. The front and rear plates of the rear control arm are overlapped and welded to the upper and lower surfaces of the longitudinal beam respectively, so that the reliability, strength and rigidity of the connection are improved;

[0018] Furthermore, the overall structural design of the front bracket structure of the front upper control arm is in an 'L' shape, which is overlapped with the upper plate of the longitudinal beam and the upper plate of the front cross beam respectively through the flange structure, thereby improving the stability of the parts;

[0019] 2. A first reinforcement plate and a second reinforcement plate are provided, and the first reinforcement plate and the second reinforcement plate are provided on the inner side of the front cross beam, which can effectively improve the rigidity of the front control arm;

[0020] Furthermore, the lower side and both ends of the front and rear plates of the longitudinal beam are provided with a first reinforcing plate and a second reinforcing plate, thereby improving the stability of the longitudinal beam connection parts;

[0021] 3. A suspension bracket and a suspension reinforcement plate are provided. The suspension bracket is a three-point assembly structure and adopts an integrated stamping structure to avoid the split structure having poor precision and assembly difficulties due to welding deformation. The suspension bracket is also provided with a reinforcement plate structure to reduce the failure of parts caused by excessive deformation of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the second three-dimensional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the third three-dimensional structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the fourth three-dimensional structure of the utility model.

[0026] In the figure: 1. front cross beam; 2. longitudinal beam; 3. front upper control arm; 4. front lower control arm; 5. front lower swing arm support plate; 6. rear control arm; 7. first reinforcement plate; 8. second reinforcement plate; 9. suspension bracket; 10. suspension reinforcement plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4 , the utility model provides the following technical solutions:

[0029] Embodiment 1: The existing new stamping and welding rear subframe front upper control arm has a relatively complex design structure, low welding efficiency, and low rigidity of the front control arm. To solve this technical problem, this embodiment discloses the following technical contents:

[0030] A novel stamping and welding rear subframe comprises a front crossbeam 1, a front upper control arm 3, a front lower control arm 4 and a front lower swing arm support plate 5, the front upper control arm 3 is mounted on the outer sides of the longitudinal beam 2 on the left and right sides, the rear control arm 6 is fixedly mounted on the outer sides of the longitudinal beam 2, the first reinforcement plate 7 and the second reinforcement plate 8 are arranged on the inner side of the front crossbeam 1, a suspension bracket 9 is fixedly mounted on the top end of the front crossbeam 1, a suspension reinforcement plate 10 is fixedly mounted on the inner side of the suspension bracket 9, the front lower control arm 4 is mounted on the bottom of the longitudinal beam 2, and the front lower swing arm support plate 5 is fixedly connected to the lower plate of the longitudinal beam 2;

[0031] like Figure 1 , Figure 3 and Figure 4 As shown, the front upper control arm 3 is designed as a two-piece structure, which is divided into a front bracket and a rear bracket. The split structure is simple and has high welding efficiency. The overall structural design of the front bracket structure of the front upper control arm 3 is in an 'L' shape, and is overlapped with the upper plate of the longitudinal beam 2 and the upper plate of the front cross beam 1 through a flange structure. The rear bracket of the front upper control arm 3 is overlapped with the upper and lower plates of the longitudinal beam 2 through a flange structure, and a first reinforcement plate 7 and a second reinforcement plate 8 are provided on the inner side of the front cross beam 1, which can effectively improve the rigidity of the front control arm;

[0032] Embodiment 2: The existing new stamping and welding sub-frame parts have low connection stability, strength and rigidity. To solve this technical problem, this embodiment discloses the following technical contents:

[0033] like Figure 1-4 As shown, the front lower control arm 4 is designed as a two-piece structure, which is divided into a front bracket and a rear bracket. The front bracket of the front lower control arm 4 is welded to the front cross beam 1 and the longitudinal beam 2, and the rear bracket of the front lower control arm 4 is connected to the lower plate of the longitudinal beam 2 through the front lower swing arm support plate 5, which not only improves the reliability of the connection, but also improves the strength and rigidity. The front and rear plates of the rear control arm 6 are overlapped and welded to the upper and lower surfaces of the longitudinal beam 2 respectively, and the lower side and both ends of the front and rear plates of the longitudinal beam 2 are arranged with a first reinforcement plate 7 and a second reinforcement plate 8, so as to improve the stability of the parts;

[0034] Embodiment 3: The existing new stamping and welding subframe may have poor precision and assembly difficulties due to welding deformation, and the parts are prone to deformation or failure. To solve this technical problem, this embodiment discloses the following technical content:

[0035] like Figure 1-4 As shown, a suspension bracket 9 is fixedly installed on the top of the front cross beam 1. The front suspension bracket 9 is a three-point assembly structure and adopts an integrated stamping structure to avoid the precision difference of the split structure due to welding deformation. A suspension reinforcement plate 10 is fixedly installed on the inner side of the suspension bracket 9, which can reduce the failure of the parts due to excessive deformation of the parts.

[0036] The above completes a series of operations of the blended regenerated cotton yarn pressing device. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel stamped and welded rear subframe, comprising a front crossbeam (1), a front upper control arm (3), a front lower control arm (4) and a front lower swing arm support plate (5), characterized in that: The front upper control arm (3) is mounted on the outside of the longitudinal beam (2) on the left and right sides, the rear control arm (6) is fixedly mounted on the outside of the longitudinal beam (2), the inside of the front cross beam (1) is provided with a first reinforcement plate (7) and a second reinforcement plate (8), the top of the front cross beam (1) is fixedly mounted with a suspension bracket (9), the inside of the suspension bracket (9) is fixedly mounted with a suspension reinforcement plate (10), the front lower control arm (4) is mounted on the bottom of the longitudinal beam (2), and the front lower swing arm support plate (5) is fixedly connected to the lower plate of the longitudinal beam (2).

2. According to claim 1, the novel stamping and welding rear subframe is characterized in that: The front upper control arm (3) comprises a front bracket and a rear bracket.

3. The novel stamping and welding rear subframe according to claim 1 is characterized in that: The overall structural design of the front bracket structure of the front upper control arm (3) is in an 'L' shape.

4. The novel stamping and welding rear subframe according to claim 1 is characterized in that: The front bracket of the front upper control arm (3) is overlapped with the upper plate of the longitudinal beam (2) and the upper plate of the front cross beam (1) respectively through a flange structure.

5. The novel stamping and welding rear subframe according to claim 1 is characterized in that: The rear bracket of the front upper control arm (3) is connected to the lower plate of the longitudinal beam (2) via the front lower swing arm support plate (5).

6. The novel stamping and welding rear subframe according to claim 1 is characterized in that: The front and rear plates of the rear control arm (6) are overlapped and welded to the upper and lower surfaces of the longitudinal beam (2) respectively.

7. The novel stamping and welding rear subframe according to claim 1 is characterized in that: A first reinforcing plate (7) and a second reinforcing plate (8) are arranged on the lower side and both ends of the front and rear plates of the longitudinal beam (2).

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