Novel stamping and welding front auxiliary frame

Abstract

The utility model discloses a novel stamping welding front auxiliary frame which comprises a rear control arm body, an upper plate of the rear control arm body is connected with a vehicle body pipe sleeve in a welding mode, welding process mechanisms are arranged on the left side and the right side of the outer side of the rear control arm body, and each welding process mechanism comprises a side line lap joint, a front control arm and the rear control arm body. Front control arms are installed on the outer portion of the rear control arm body in a bilateral symmetry mode, side line lap joints are arranged on the rear sides of the front control arms, and a rear front suspension is installed on the front side of the interior of the rear control arm body. According to the novel stamping and welding front auxiliary frame, the welding process mechanism is arranged, the rigidity and the connecting strength of the control arm mounting support are integrally improved, the product reliability is guaranteed, meanwhile, the lap joint mechanism is arranged, the connecting stability is improved by increasing the lap joint mode of the control arm and the longitudinal beam, and the reinforcing plate design mechanism is additionally arranged; the rear control arm reinforcing plate is in lap joint and welding with the longitudinal beam upper plate and the longitudinal beam lower plate, and the Z-direction rigidity of the control arm can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle frames, in particular to a novel stamping and welding front auxiliary vehicle frame. Background Art

[0002] Common chassis suspension structures in automobile design include McPherson independent suspension, multi-link independent suspension, double wishbone independent suspension, etc. Regardless of the form of suspension structure, the subframe needs to be designed with front and rear control arms, which are connected to the wheel center of the vehicle and are the main force-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 and avoid the failure of the subframe due to insufficient performance of the front and rear control arm installation points, thereby causing safety accidents, there are many new stamped and welded front subframes currently available on the market, but there are still some shortcomings;

[0003] The existing new stamping and welding front subframe is welded to the subframe through the longitudinal beam, and the welding form is edge line overlap, the stiffness performance is poor, and the fracture may occur, affecting the normal driving of the vehicle. For example, the Chinese utility model patent with the authorization announcement number CN220924288U discloses a new stamping and welding front subframe, including a subframe body, a left longitudinal beam and a right longitudinal beam, the front end of the subframe body is equipped with a front cross beam, the rear end of the subframe body is equipped with a rear cross beam, the left side of the subframe body is equipped with a left longitudinal beam, the rear ends of the left and right longitudinal beams are equipped with reinforcing ribs, the middle ends of the left and right longitudinal beams are provided with buffer grooves, the inner side of the rear cross beam is equipped with a cross beam mounting hinge seat, the rear ends of the left rear bracket and the right rear bracket are both provided with mounting holes, and the inside of the mounting holes is equipped with positioning pins. The new stamping and welding front subframe adds a horn to the front part of the subframe, so that the longitudinal beam or the front cross beam is not bent during design, and the flatness of the longitudinal beam or the front cross beam is ensured, so that the subframe has better dynamic stiffness performance and a more beautiful appearance. The longitudinal beam and the cross beam are straight and not bent, which can simplify the stamping process and reduce costs. However, this device has the problem that the longitudinal beam and the subframe are welded in the form of edge overlap, the stiffness performance is poor, and the fracture may occur, affecting the normal driving of the vehicle. Therefore, we propose a new stamping and welding front subframe to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a novel stamped and welded front subframe to solve the problems that the current novel stamped and welded front subframe proposed in the above-mentioned background technology is welded by the longitudinal beam and the subframe, the welding form is the edge line overlap, the rigidity performance is poor, the fracture may occur, and the normal driving of the vehicle may be affected.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a new stamping and welding front subframe, comprising:

[0006] A rear control arm body, wherein an upper plate of the rear control arm body is welded to a pipe sleeve of a vehicle body;

[0007] Also includes:

[0008] The outer sides of the rear control arm body are provided with welding process mechanisms, wherein the welding process mechanisms include edge line overlap, front control arm and rear control arm body, the outer sides of the rear control arm body are symmetrically installed with front control arms, and the rear side of the front control arm is provided with edge line overlap.

[0009] Preferably, a rear-front suspension is installed on the inner front side of the rear control arm body.

[0010] Preferably, a right front suspension is installed on the inner rear side of the rear control arm body.

[0011] Preferably, a rear control arm reinforcement plate is arranged at the front of the interior of the rear control arm body, and the rear control arm reinforcement plate is overlapped and welded to the upper and lower plates of the longitudinal beam respectively.

[0012] Preferably, a steering gear reinforcement plate is welded inside the rear front suspension.

[0013] Preferably, the right front suspension and the rear front suspension are connected and fixedly connected by a T-shaped sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the new stamped and welded front subframe improves the rigidity and connection strength of the control arm mounting bracket as a whole by setting a welding process mechanism, thereby ensuring product reliability; at the same time, a lap joint mechanism is set to improve the connection stability by increasing the lap joint form between the control arm and the longitudinal beam; in addition, a reinforcement plate design mechanism is set, and the rear control arm reinforcement plate is overlapped and welded with the upper and lower plates of the longitudinal beam respectively, thereby greatly improving the rigidity of the control arm in the Z direction;

[0015] 1. The sideline overlap, front control arm and rear control arm body are provided, and the upper plate of the rear control arm body is fixed to the body sleeve by welding, which improves the connection strength and rigidity. At the same time, the front control arm is symmetrically arranged on the outside of the rear control arm body, and the rear side of the front control arm is provided with a sideline overlap to improve the rigidity and connection strength of the control arm mounting bracket and ensure product reliability;

[0016] 2. A rear control arm reinforcement plate is provided. By installing the rear control arm reinforcement plate on the inner front of the rear control arm body, the rear control arm reinforcement plate is overlapped and welded with the upper and lower plates of the longitudinal beam respectively, which can greatly improve the Z-direction rigidity of the control arm;

[0017] 3. A right front suspension and a rear front suspension are provided. The rear front suspension is installed on the inner front of the rear control arm body, and the right front suspension is installed on the inner rear of the rear control arm body. The rear front suspension is connected and fixed at three points. A steering gear reinforcement plate is welded on the inner side of the rear front suspension. The right front suspension and the rear front suspension are connected and fixed with a T-shaped sleeve, making the structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective structural diagram of the sideline overlap and front control arm connection of the utility model;

[0019] Figure 2 This is a perspective structural diagram of the rear control arm body of the utility model;

[0020] Figure 3 This is a top view of the structure of the utility model;

[0021] Figure 4 This is a bottom view of the structure of the utility model;

[0022] Figure 5 This is a top view of the structure of the rear control arm reinforcement plate of the utility model;

[0023] Figure 6 It is a top structural schematic diagram of the steering gear reinforcement plate of the utility model.

[0024] In the figure: 1. Edge overlap; 2. Front control arm; 3. Rear control arm body; 4. Right front suspension; 5. Rear front suspension; 6. Steering gear reinforcement plate; 7. Rear control arm reinforcement plate. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0027] Example 1: In order to solve the problems existing in the prior art, this embodiment adopts the following technical solutions: a new type of stamping and welding front subframe, which is provided with a rear control arm body 3, a welding process mechanism, a front control arm 2 is arranged on the left and right sides of the outside of the rear control arm body 3, and the edge line overlap 1 is located behind the front control arm 2. This structure has good welding processability; the overlap mechanism improves the stability of the overlap form of the control arm and the longitudinal beam; the reinforcing plate design mechanism is arranged inside the front side of the rear control arm body 3, and is overlapped and welded with the upper and lower plates of the longitudinal beam. The welding of the upper and lower plates of the rear cross beam and the stabilizer bar reinforcement plate will improve the rigidity of the control arm; firstly, improving the welding process improves the rigidity and connection strength of the control arm mounting bracket and increases the stability of the overlap between the control arm and the longitudinal beam. A rear control arm reinforcement plate 7 is arranged inside the rear control arm body 3, and a steering gear reinforcement plate 6 is also arranged on the inner side of the rear front suspension 5. The rear control arm reinforcement plate 7 can greatly improve the Z-direction rigidity of the control arm. At the same time, the upper and lower plates of the rear cross beam are welded to the stabilizer bar reinforcement plate and the stabilizer bar sleeve, thereby improving the Z-direction rigidity of the stabilizer bar.

[0028] The existing new stamped and welded front subframe and control arm mounting bracket have poor rigidity and connection strength, and are prone to breakage, such as Figure 1 and Figure 2 As shown, the welding process mechanism includes a front control arm 2 symmetrically arranged on the left and right sides of the rear control arm body 3, and a sideline overlap 1 is arranged on the rear side of the front control arm 2. This structure has good welding processability and improves the rigidity and connection strength of the control arm mounting bracket as a whole, thereby ensuring product reliability.

[0029] Example 2: In the existing subframe, the lap stability between the control arm and the longitudinal beam is poor, so this embodiment adopts the following technical solutions, such as Figure 3 and Figure 4 As shown, the overlapping mechanism includes a right front suspension 4 and a rear front suspension 5 which are respectively installed on the inner side of the rear control arm body 3. The rear front suspension 5 is connected and fixed at three points. The right front suspension 4 and the rear front suspension 5 are connected and fixed by using a T-shaped sleeve. The structure is more stable, lighter, and lower in cost. The structure of the front and rear control arm mounting points of the subframe is redesigned, and the connection stability is improved by increasing the overlapping form of the control arm and the longitudinal beam.

[0030] Example 3: In the existing subframe, the rigidity and strength of the control arm are poor, so this embodiment adopts the following technical solutions, such as Figure 5 and Figure 6As shown, the reinforcement plate design mechanism includes a rear control arm reinforcement plate 7 arranged on the front inner side of the rear control arm body 3. The rear control arm reinforcement plate 7 is overlapped and welded with the upper and lower plates of the longitudinal beam respectively, which can greatly improve the Z-direction stiffness of the control arm, and the upper plate of the rear control arm body 3 is fixed to the vehicle body sleeve by welding, which improves the connection strength and stiffness. At the same time, a steering gear reinforcement plate 6 is welded on the inner side of the rear front suspension 5, and the upper and lower plates of the rear cross beam are welded to the stabilizer bar reinforcement plate and welded to the stabilizer bar sleeve, which improves the Z-direction stiffness of the stabilizer bar.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0032] 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 new stamping and welding front subframe, comprising: A rear control arm body (3), wherein an upper plate of the rear control arm body (3) is welded to a body tube sleeve; It is characterized by further comprising: The outer sides of the rear control arm body (3) are provided with welding process mechanisms, wherein the welding process mechanisms include a sideline overlap (1), a front control arm (2) and a rear control arm body (3); the front control arm (2) is symmetrically mounted on the outer sides of the rear control arm body (3), and a sideline overlap (1) is provided on the rear side of the front control arm (2).

2. According to claim 1, the novel stamping and welding front subframe is characterized in that: A rear front suspension (5) is installed on the inner front side of the rear control arm body (3).

3. The novel stamping and welding front subframe according to claim 2 is characterized in that: A right front suspension (4) is installed on the inner rear side of the rear control arm body (3).

4. The novel stamping and welding front subframe according to claim 3 is characterized in that: A rear control arm reinforcement plate (7) is arranged at the front of the interior of the rear control arm body (3), and the rear control arm reinforcement plate (7) is overlapped and welded to the upper and lower plates of the longitudinal beam respectively.

5. The novel stamping and welding front subframe according to claim 2 is characterized in that: A steering gear reinforcement plate (6) is welded and connected inside the rear front suspension (5).

6. The novel stamping and welding front subframe according to claim 3 is characterized in that: The right front suspension (4) and the rear front suspension (5) are connected and fixedly connected using a T-shaped sleeve.

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