Front-overhang and rear-lower swing arm structure

Abstract

The utility model discloses a front-overhang rear-lower swing arm structure which comprises a swing arm body. The swing arm mounting ball pin is formed at one end of the swing arm body, and the swing arm body is connected with a steering knuckle through the swing arm mounting ball pin; a shock absorber side lining installation portion is arranged at the position, close to the swing arm installation ball pin, of the swing arm body, and a lower fork arm and the swing arm body are assembled and fixed to the shock absorber side lining installation portion through a shock absorber side lining. The end, away from the swing arm installation ball pin, of the swing arm body is provided with an auxiliary frame side lining installation part, and the swing arm body and an auxiliary frame are assembled and fixed to the auxiliary frame side lining installation part through an auxiliary frame side lining. The swing arm is simple in structure, firm in installation, convenient to assemble, capable of being independently disassembled and replaced and good in maintainability; the labor cost and the tool input cost are reduced, and the comfort and the stability of whole vehicle driving are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile suspension, in particular to a front suspension rear lower swing arm structure of a passenger car. Background Art

[0002] The suspension is the assembly of the transmission connection device between the car body and the wheels. At present, the front suspension system of mid-to-high-end new energy passenger cars mostly adopts double wishbone independent suspension. The upper and lower wishbones absorb the lateral force at the same time, which improves the lateral stiffness of the front suspension system. Therefore, it has excellent anti-roll performance and good grip performance when turning, and reduces tire wear. However, the vibration handling delicacy and comfort of the road are not as good as those of multi-link independent suspension.

[0003] The function of the swing arm is to transmit various forces acting on the wheel to the body, while ensuring that the wheel moves along a certain trajectory. The front suspension lower arm is one of the main connecting components of the front suspension system of the car. At present, the front suspension lower arm of passenger cars is mostly assembled or welded with sheet metal structures, which has high requirements for welding technology. The swing arm assembly is not accurate, which affects the performance of the whole vehicle. In addition, the parts of this structure are heavy, which will increase the unsprung mass and have an adverse effect on the endurance and handling performance.

[0004] Therefore, based on the above technical problems, technicians in this field urgently need to develop a passenger car front suspension rear lower arm structure. Utility Model Content

[0005] The utility model aims to provide a front suspension rear lower arm structure, which divides the lower arm into two connecting rods on the basis of a double wishbone suspension, and each connecting rod is individually connected to a subframe, thereby improving the comfort and controllability of the vehicle to a certain extent.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a front-suspension rear lower swing arm structure, the swing arm structure comprising:

[0008] Swing arm body;

[0009] A swing arm mounting ball pin formed at one end of the swing arm body, and the swing arm body is connected to the steering knuckle through the swing arm mounting ball pin;

[0010] A shock absorber side bushing installation portion is provided at a position of the swing arm body close to the swing arm installation ball pin, and the lower fork arm is assembled and fixed to the shock absorber side bushing installation portion with the swing arm body through the shock absorber side bushing;

[0011] A sub-frame side bushing mounting portion is arranged at one end of the swing arm body away from the swing arm mounting ball pin, and the swing arm body is assembled and fixed to the sub-frame side bushing mounting portion with the sub-frame through the sub-frame side bushing.

[0012] Furthermore, grooves are provided on both sides of the swing arm body, and the depth of the grooves is 12 mm.

[0013] Furthermore, the swing arm mounting ball pin has a ball pin support forged integrally with the swing arm body, and the ball pin protrudes from the ball pin support;

[0014] The ball pin of the swing arm body passes through the matching mounting hole of the steering knuckle and is fastened by a nut.

[0015] Further, the extension direction of the swing arm mounting ball pin is the first direction, and the extension directions of the shock absorber side bushing mounting portion and the sub-frame side bushing mounting portion are the second direction;

[0016] The first direction is perpendicular to the second direction.

[0017] Furthermore, one end of the lower fork arm is connected to the swing arm body through a shock absorber side bushing, and the other end of the lower fork arm is connected to the shock absorber of the car.

[0018] Furthermore, the lower fork arm has two lower fork arm parts and a shock absorber connection part formed at one end of the two lower fork arm parts;

[0019] The two lower fork arms of the lower fork arm are separately arranged on both sides of the swing arm body and connected to the swing arm body;

[0020] The shock absorber connecting portion is connected to the shock absorber.

[0021] In the above technical solution, the utility model provides a front suspension rear lower swing arm structure, which has the following beneficial effects:

[0022] The swing arm structure of the utility model divides the swing arm into two connecting rods on the basis of the double wishbone suspension, and each connecting rod is connected to the subframe separately, which improves the comfort and handling of the vehicle to a certain extent. The rear lower swing arm of the front suspension adopts aluminum alloy forging molding in terms of technology, optimizes the part structure, can effectively reduce the weight of the front suspension, reduce the vehicle's driving energy consumption, and the mounting surfaces are all machined, which greatly improves the dimensional accuracy and consistency of the parts, and improves the handling and stability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1It is a structural schematic diagram of the front suspension and rear lower swing arm structure disclosed in the embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the front suspension rear lower swing arm structure connected to the steering knuckle disclosed in the embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the front suspension rear lower swing arm structure and the lower wishbone connected to each other according to the embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the front suspension rear lower swing arm structure and the subframe connected to each other according to the embodiment of the utility model;

[0028] Figure 5 It is a structural schematic diagram of a shock absorber side bushing of a front suspension rear lower swing arm structure disclosed in an embodiment of the utility model;

[0029] Figure 6 It is a structural schematic diagram of a subframe side bushing of a front suspension rear lower swing arm structure disclosed in an embodiment of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the front suspension and rear lower swing arm structure in use state disclosed in an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] Swing arm structure; 2. Swing arm mounting ball pin; 3. Steering knuckle; 4. Lower wishbone; 5. Subframe;

[0033] 101, swing arm body; 102, shock absorber side bushing mounting portion; 103, subframe side bushing mounting portion; 104, groove; 105, shock absorber side bushing; 106, subframe side bushing;

[0034] 201, ball pin support; 202, ball pin;

[0035] 301, nut;

[0036] 401, lower wishbone split; 402, shock absorber connection part. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] See also Figures 1 to 7 As shown;

[0039] A front suspension and rear lower swing arm structure of this embodiment, the swing arm structure 1 comprises:

[0040] Swing arm body 101;

[0041] A swing arm mounting ball pin 2 is formed at one end of the swing arm body 101, and the swing arm body 101 is connected to the steering knuckle 3 via the swing arm mounting ball pin 2;

[0042] A shock absorber side bushing installation portion 102 is provided at a position of the swing arm body 101 near the swing arm installation ball pin 2, and the lower fork arm 4 is assembled and fixed to the shock absorber side bushing installation portion 102 with the swing arm body 101 through a shock absorber side bushing 105;

[0043] A sub-frame side bushing mounting portion 103 is provided at one end of the swing arm body 101 away from the swing arm mounting ball pin 2 , and the swing arm body 101 is assembled and fixed to the sub-frame side bushing mounting portion 103 with the sub-frame 5 through the sub-frame side bushing 106 .

[0044] Specifically, the present embodiment discloses a novel swing arm structure, wherein the swing arm structure 1 adopts a three-fixed-point structure, wherein the swing arm structure is based on the above-mentioned swing arm body 101, and a swing arm mounting ball pin 2 is provided at one end of the swing arm body 101, and the swing arm body 101 is connected to the steering knuckle 3 through the swing arm mounting ball pin 2, and the other two fixed points are respectively the shock absorber side bushing mounting part 102 and the subframe side bushing mounting part 103, which are used to be connected to the lower wishbone 4 and the subframe 5 respectively.

[0045] Preferably, grooves 104 are provided on both sides of the swing arm body 101 of this embodiment, and the depth of the grooves 104 is 12 mm. In this embodiment, grooves 104 with a depth of 12 mm are processed on both sides of the swing arm body 101, and the surface of the bracket can be made smooth and smooth through the grooves 104, while reducing the weight of the swing arm to achieve the purpose of lightweighting.

[0046] Preferably, the swing arm mounting ball pin 2 of this embodiment has a ball pin support 201 forged integrally with the swing arm body 101, and the ball pin support 201 protrudes with a ball pin 202;

[0047] The ball pin 202 of the swing arm body 101 passes through the matching mounting hole of the steering knuckle 3 and is fastened by a nut 301 .

[0048] The swing arm mounting ball pin 2 of this embodiment mainly includes several main components: ball pin support 201, clamping ring, clamping ring, ball head and dust cover. Among them, the ball pin support 201 of this embodiment and the swing arm structure 1 are forged as an integrated whole, avoiding the risk of cracking caused by traditional welding and greatly improving the tensile and compressive release of the ball pin 202.

[0049] Furthermore, the swing arm structure 1 of this embodiment is connected to the steering knuckle 3 through the swing arm mounting ball pin 2, and is connected to the brake caliper and the friction plate through the steering knuckle 3 to provide braking force for the whole. At the same time, the load is evenly distributed to the entire suspension system to ensure the stability of the vehicle, support and drive the front wheel to rotate around the kingpin, and make the car turn smoothly and sensitively.

[0050] Preferably, the extension direction of the swing arm mounting ball pin 2 of the present embodiment is a first direction, and the extension direction of the shock absorber side bushing mounting portion 102 and the subframe side bushing mounting portion 103 is a second direction; wherein the first direction is perpendicular to the second direction.

[0051] Preferably, one end of the lower fork arm 4 of the present embodiment is connected to the swing arm body 101 through a shock absorber side bushing 105, and the other end of the lower fork arm 4 is connected to the shock absorber of the vehicle.

[0052] Among them, the lower fork arm 4 of this embodiment has two lower fork arm splits 401 and a shock absorber connecting portion 402 formed at one end of the two lower fork arm splits 401; the two lower fork arm splits 401 of the lower fork arm 4 are respectively arranged on both sides of the swing arm body 101 and connected to the swing arm body 101; the shock absorber connecting portion 402 is connected to the shock absorber.

[0053] The shock absorber side bushing mounting part 102 of the swing arm structure 1 of this embodiment is used as a structure connected to the lower wishbone 4, and the shock absorber is connected through the lower wishbone 4 to alleviate the impact caused by the road surface and provide a smoother driving experience for the vehicle. In addition, the subframe side bushing mounting part 103 of the swing arm structure 1 is a component connected to the subframe 5, providing an installation position for the wheel system, bearing variable impact loads, and supporting and guiding the suspension. It supports the engine and gearbox, blocks the vibration and noise of the road surface from directly entering the passenger compartment, and improves the rigidity of the overall structure of the vehicle.

[0054] In the above technical solution, the utility model provides a heavy front suspension rear lower swing arm structure, which has the following beneficial effects:

[0055] The swing arm structure of the utility model divides the swing arm into two connecting rods on the basis of the double wishbone suspension, and each connecting rod is separately connected to the subframe 5, which improves the comfort and controllability of the vehicle to a certain extent. The rear lower swing arm of the front suspension adopts aluminum alloy forging molding in terms of technology, optimizes the part structure, can effectively reduce the weight of the front suspension, reduce the energy consumption of the vehicle, and the mounting surfaces are all machined, which greatly improves the dimensional accuracy and consistency of the parts, and improves the controllability and stability of the vehicle.

[0056] The swing arm of the utility model has a simple structure, is firmly installed, is easy to assemble, can be independently disassembled and replaced, and has good maintainability; it reduces labor costs and tooling investment costs, and improves the driving comfort and stability of the entire vehicle.

[0057] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. The front suspension and rear lower swing arm structure is characterized by: The swing arm structure (1) comprises: Swing arm body (101); A swing arm mounting ball pin (2) is formed at one end of the swing arm body (101), and the swing arm body (101) is connected to the steering knuckle (3) via the swing arm mounting ball pin (2); A shock absorber side bushing mounting portion (102) is provided on the swing arm body (101) at a position close to the swing arm mounting ball pin (2); the lower fork arm (4) is assembled and fixed to the shock absorber side bushing mounting portion (102) with the swing arm body (101) via a shock absorber side bushing (105); A sub-frame side bushing mounting portion (103) is provided at one end of the swing arm body (101) away from the swing arm mounting ball pin (2); the swing arm body (101) is assembled and fixed to the sub-frame side bushing mounting portion (103) with the sub-frame (5) via a sub-frame side bushing (106).

2. The front suspension rear lower swing arm structure according to claim 1, characterized in that: Grooves (104) are provided on both sides of the swing arm body (101), and the depth of the grooves (104) is 12 mm.

3. The front suspension rear lower swing arm structure according to claim 1, characterized in that: The swing arm mounting ball pin (2) comprises a ball pin support (201) forged integrally with the swing arm body (101), and a ball pin (202) protrudes from the ball pin support (201); The ball pin (202) of the swing arm body (101) passes through a matching mounting hole of the steering knuckle (3) and is fastened and connected via a nut (301).

4. The front suspension rear lower swing arm structure according to claim 1 or 3, characterized in that: The swing arm mounting ball pin (2) extends in a first direction, and the shock absorber side bushing mounting portion (102) and the sub-frame side bushing mounting portion (103) extend in a second direction; The first direction is perpendicular to the second direction.

5. The front suspension rear lower swing arm structure according to claim 1, characterized in that: One end of the lower fork arm (4) is connected to the swing arm body (101) via a shock absorber side bushing (105), and the other end of the lower fork arm (4) is connected to the shock absorber of the vehicle.

6. The front suspension rear lower swing arm structure according to claim 5, characterized in that: The lower fork arm (4) comprises two lower fork arm parts (401) and a shock absorber connection portion (402) formed at one end of the two lower fork arm parts (401); The two lower fork arm parts (401) of the lower fork arm (4) are respectively arranged on both sides of the swing arm body (101) and connected to the swing arm body (101); The shock absorber connecting portion (402) is connected to the shock absorber.

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