Control arm assembly

Abstract

The utility model provides a control arm assembly, and belongs to the technical field of automobile accessories. The problem that an existing control arm body of a plate stamping and welding structure is low in structural strength is solved. The control arm assembly comprises a control arm main body, the control arm main body comprises a front panel and a back panel which are formed by punching metal plates, the edge of the front panel is provided with a main flange, the edge of the back panel is provided with an auxiliary flange, the front panel and the back panel are arranged in a stacked mode, and the main flange and the auxiliary flange are fixed through welding. The control arm assembly further comprises a first inner lining plate and a second inner lining plate which are both located between the front panel and the back panel, the first inner lining plate is overlapped and fixedly connected to the front panel, the second inner lining plate is overlapped and fixedly connected to the back panel, the edge of the second inner lining plate is provided with an inner turned edge, and the inner turned edge is attached to the auxiliary turned edge. According to the control arm assembly, the structural strength of the control arm main body of the plate stamping and welding structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts and relates to a control arm assembly. Background Art

[0002] A suspension is a general term for the force transmission connection device between the wheels and the body of an automobile, including elastic elements, shock absorbers and force transmission devices, which play the roles of buffering, shock absorption and force transmission respectively. The force transmission device includes a control arm assembly, a tie rod assembly, a stabilizer bar assembly, etc. The control arm assembly is connected between the wheel and the body and has the functions of guiding and force transmission.

[0003] At present, there are mainly two forming structures for the main body of the control arm assembly. One is an integral casting structure, and the casting structure is a solid part with high structural strength but heavy weight. The other is a sheet metal stamping and welding structure. For example, a control arm assembly [Application No.: CN201610423432.2; Publication No.: CN106004292A] disclosed in Chinese patent literature materials includes a control arm main body, a flanging hole and a lining. The control arm main body includes a first arm body and a second arm body. Both the first arm body and the second arm body are formed by stamping metal materials. Flanges are provided around the first arm body and the second arm body, and the flanges of the first arm body are connected to the flanges of the second arm body by welding. The control arm main body of the sheet metal stamping and welding structure is a hollow part. Compared with the integral casting structure, it is lighter in weight but lower in structural strength. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a control arm assembly for the above problems existing in the prior art, and the technical problem to be solved is how to improve the structural strength of the control arm main body of the sheet metal stamping and welding structure.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] The control arm assembly includes a control arm main body. The control arm main body includes a front panel and a back panel both formed by stamping metal sheets. The edge of the front panel has a main flange, and the edge of the back panel has a secondary flange. The front panel and the back panel are stacked and the main flange and the secondary flange are fixed by welding. It is characterized in that the control arm assembly further includes a first inner lining plate and a second inner lining plate both located between the front panel and the back panel. The first inner lining plate is stacked and fixedly connected to the front panel, the second inner lining plate is stacked and fixedly connected to the back panel. The edge of the second inner lining plate has an inner flange, and the inner flange abuts against the secondary flange.

[0007] The setting of the first inner lining plate increases the thickness of the front panel, the setting of the second inner lining plate increases the thickness of the back panel, and the setting of the inner flange increases the thickness at the secondary flange and provides support for the secondary flange, thereby improving the structural strength of the control arm main body of the sheet metal stamping and welding structure.

[0008] In the above control arm assembly, the edge of the first inner lining plate abuts against the main flange. In this way, the first inner lining plate can also provide a supporting effect for the main flange, improving the structural strength of the side part of the control arm body.

[0009] In the above control arm assembly, the main flange abuts against the outer side surface of the secondary flange, and there is a main weld seam between the edge of the main flange and the outer side surface of the secondary flange. In this way, three layers of plates, namely the main flange, the secondary flange and the inner flange, are formed on the side part of the control arm body, improving the structural strength of the side part of the control arm body.

[0010] In the above control arm assembly, the wall of the back panel and the wall of the second inner lining plate respectively have a secondary boss and an inner boss protruding towards the front panel, and the secondary boss and the inner boss abut and are fixed. The secondary boss and the inner boss have the function of reinforcing ribs, respectively improving the structural strength of the back panel and the second inner lining plate, thereby improving the structural strength of the control arm body.

[0011] In the above control arm assembly, the wall of the front panel has a number of positive protrusions protruding away from the back panel. The positive protrusions have the function of reinforcing ribs, improving the structural strength of the front panel, thereby improving the structural strength of the control arm body.

[0012] In the above control arm assembly, the control arm assembly further includes a bushing welded and fixed to the control arm body. There is a first weld seam between the outer side surface of the bushing and the front panel, and a second weld seam between the outer side surface of the bushing and the back panel. The setting of the first weld seam and the second weld seam enables the bushing to have a supporting effect on both the front panel and the back panel, improving the structural strength of the control arm body.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] The first inner lining plate is overlapped and fixed on the front panel, the second inner lining plate is provided with an inner flange, and while the second inner lining plate is overlapped and fixed on the back panel, the inner flange abuts against the secondary flange, improving the structural strength of the control arm body. The back panel and the second inner lining plate are respectively provided with a secondary boss and an inner boss, the front panel is provided with positive protrusions, and the bushing is welded and fixed to the front panel and the back panel respectively, further improving the structural strength of the control arm body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of this control arm assembly.

[0016] Figure 2 is Figure 1 the cross-sectional view in the A-A direction in

[0017] Figure 3 is Figure 1Cross-sectional view in the direction of B-B.

[0018] Figure 4 is Figure 1 Partial view in the direction of C.

[0019] Figure 5 is Figure 1 Partial view in the direction of D.

[0020] Figure 6 It is a three-dimensional view of the second inner lining plate in the control arm assembly.

[0021] In the figure, 1 is the control arm main body; 1a is the front panel; 1a1 is the main flanging; 1a2 is the main protrusion; 1b is the back panel; 1b1 is the secondary flanging; 1b2 is the secondary boss; 1c is the main body weld; 2 is the first inner lining plate; 3 is the second inner lining plate; 3a is the inner flanging; 3b is the inner boss; 4 is the bushing tube; 5 is the first weld; 6 is the second weld. Specific implementation mode

[0022] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0023] As Figure 1 shown, a control arm assembly includes a control arm main body 1 and two bushing tubes 4. The control arm main body 1 is in a "human" shape, having a ball joint connection end and two bushing connection ends. A ball joint assembly is fixed on the ball joint connection end through bolts, and the bushing connection ends are fixed with the bushing tubes 4 by welding. A bushing is installed inside the bushing tube 4. The dotted line in the figure is the internal structure of the control arm assembly.

[0024] Combined with Figure 2 and Figure 3As shown, the control arm body 1 includes a front panel 1a and a rear panel 1b, both of which are formed by stamping metal sheets. The edge of the front panel 1a has a main flange 1a1, and the edge of the rear panel 1b has a secondary flange 1b1. The front panel 1a and the rear panel 1b are stacked, and the main flange 1a1 and the secondary flange 1b1 are fixed by welding. The main flange 1a1 abuts against the outer side surface of the secondary flange 1b1, and there is a main body weld 1c between the edge of the main flange 1a1 and the outer side surface of the secondary flange 1b1. A first inner lining plate 2 and a second inner lining plate 3 are arranged between the front panel 1a and the rear panel 1b, and the first inner lining plate 2 and the second inner lining plate 3 are close to the ball joint connection end. Both the first inner lining plate 2 and the second inner lining plate 3 are formed by stamping metal sheets. The first inner lining plate 2 is stacked and fixedly connected to the front panel 1a, and the second inner lining plate 3 is stacked and fixedly connected to the rear panel 1b. The first inner lining plate 2 and the front panel 1a are fixedly connected by pressure welding, and the second inner lining plate 3 and the rear panel 1b are also fixedly connected by pressure welding. The edge of the first inner lining plate 2 abuts against the main flange 1a1, and the edge of the second inner lining plate 3 has an inward flange 3a, and the inward flange 3a abuts against the secondary flange 1b1. Combining Figure 6 As shown, the wall of the rear panel 1b and the wall of the second inner lining plate 3 respectively have a secondary boss 1b2 and an inner boss 3b protruding towards the front panel 1a. The secondary boss 1b2 and the inner boss 3b abut and are fixed, and the wall of the front panel 1a has a number of positive protrusions 1a2 protruding away from the rear panel 1b.

[0025] The setting of the first inner lining plate 2 increases the thickness of the front panel 1a, the setting of the second inner lining plate 3 increases the thickness of the rear panel 1b, and the setting of the inward flange 3a increases the thickness at the secondary flange 1b1 and provides support for the secondary flange 1b1, thereby improving the structural strength of the control arm body 1 of the sheet metal stamping and welding structure. The rear panel 1b and the second inner lining plate 3 are respectively provided with a secondary boss 1b2 and an inner boss 3b, and the front panel 1a is provided with positive protrusions 1a2, which further improves the structural strength of the control arm body 1.

[0026] As Figure 4 and Figure 5As shown, there is a first weld seam 5 between the outer side surface of each lining sleeve 4 and the front panel 1a, and a second weld seam 6 between the outer side surface of each lining sleeve 4 and the back panel 1b. A first support plate and a second support plate are also provided between the front panel 1a and the back panel 1b, and the first support plate and the second support plate are close to the bushing connection ends on the right side. The first support plate is overlapped and fixedly connected to the front panel 1a, and the second support plate is overlapped and fixedly connected to the back panel 1b. There is a third weld seam between the edge of the first support plate and the front panel 1a, and a fourth weld seam between the edge of the second support plate and the back panel 1b. The first support plate and the second support plate are both formed by stamping metal sheets. The lining sleeve 4 is fixedly welded to the front panel 1a and the back panel 1b respectively. The setting of the first support plate and the second support plate further improves the structural strength of the control arm body 1.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A control arm assembly, comprising a control arm body (1), the control arm body (1) comprising a front panel (1a) and a back panel (1b) both formed by stamping of metal plates, the front panel (1a) having a main flange (1a1) at an edge, the back panel (1b) having a secondary flange (1b1) at an edge, the front panel (1a) and the back panel (1b) being stacked and the main flange (1a1) and the secondary flange (1b1) being fixed by welding, characterized in that: The control arm assembly further comprises a first inner lining plate (2) and a second inner lining plate (3), both of which are located between the front panel (1a) and the back panel (1b); the first inner lining plate (2) is overlapped and fixedly connected to the front panel (1a); the second inner lining plate (3) is overlapped and fixedly connected to the back panel (1b); the second inner lining plate (3) has an inner flange (3a) at its edge, and the inner flange (3a) is in contact with the secondary flange (1b1).

2. The control arm assembly according to claim 1, characterized in that: The edge of the first lining plate (2) abuts against the main flange (1a1).

3. The control arm assembly according to claim 1, characterized in that: The main flange (1a1) is in contact with the outer side surface of the secondary flange (1b1), and a main weld (1c) is provided between the edge of the main flange (1a1) and the outer side surface of the secondary flange (1b1).

4. The control arm assembly according to any one of claims 1 to 3, characterized in that: The plate wall of the back plate (1b) and the plate wall of the second inner lining plate (3) respectively have a secondary boss (1b2) and an inner boss (3b) protruding toward the front plate (1a), and the secondary boss (1b2) and the inner boss (3b) are abutted and fixed.

5. The control arm assembly according to any one of claims 1 to 3, characterized in that: The plate wall of the front plate (1a) has a plurality of positive protrusions (1a2) protruding away from the back plate (1b).

6. The control arm assembly according to any one of claims 1 to 3, characterized in that: The control arm assembly also includes a bushing tube (4) welded and fixed to the control arm body (1), a first weld seam (5) being provided between the outer side surface of the bushing tube (4) and the front panel (1a), and a second weld seam (6) being provided between the outer side surface of the bushing tube (4) and the back panel (1b).

Images