Swing arm assembly of electric automobile

Abstract

The invention discloses an electric automobile swing arm assembly which comprises a swing arm body, the swing arm body is provided with three extending connecting arms, the extending connecting arm on the outer side is used for fixing a ball head assembly, the two extending connecting arms on the inner side are used for fixing bushings, and the middle area of the swing arm body is larger than the extending connecting arms. The outer side edge of the swing arm body is provided with an outward turning structure, and the swing arm body is provided with an inward turning structure corresponding to the inner side edge between the two extending connecting arms of the fixed bushing. The swing arm assembly of the electric vehicle is reasonable in structural design, the size of the connecting arm relatively extending out of the middle area of the swing arm body is relatively large, the swing arm body is provided with the through integral convex rib, the outer edge is of an outward turning structure, the inner edge is of an inward turning structure, and the inner connecting plate is arranged in the swing arm body, so that the integral structural strength of the swing arm assembly is effectively improved; especially torsional strength.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, and in particular to an electric vehicle swing arm assembly. Background Technology

[0002] The control arm assembly is used to connect the steering knuckle and the subframe. It is a key component of the car suspension, and the structural stability of the control arm assembly is crucial to the stable operation of the car.

[0003] Existing automotive swing arm assemblies are mostly simple swing arm frames, which are arc-shaped tubular frames and triangular frames. Two bushings are fixed on one side of the swing arm frame, and a ball joint assembly is fixed on the other side. The structural strength and torsional strength of the swing arm frame are relatively weak, and there is a risk of deformation in later use, which affects the stability of vehicle operation. For example, patent CN211918304U discloses a swing arm structure, a swing arm assembly, and an automobile, which includes a swing arm body. The swing arm body is provided with a ball joint housing and a bushing mounting part. The ball joint housing includes a shell body and a cover plate. The swing arm body includes a first body section and a second body section and a third body section arranged opposite to each other. The outer ends of the second body section and the outer ends of the third body section are respectively connected to the two ends of the first body section. The swing arm body is an arc-shaped frame, and its torsional strength is relatively weak. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an electric vehicle swing arm assembly to effectively improve structural strength.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The electric vehicle swing arm assembly includes a swing arm body with three extended connecting arms. One outer extended connecting arm is used to fix the ball joint assembly, and the two inner extended connecting arms are used to fix the bushing. The middle area of ​​the swing arm body is larger than each extended connecting arm. The outer edge of the swing arm body is provided with an outward folding structure, and the inner edge between the two extended connecting arms that fix the bushing is provided with an inward folding structure.

[0006] Further or preferred: The inner edge between the two extended connecting arms of the swing arm body corresponding to the fixed bushing is concave arc-shaped, and the inner flange structure is an arc-shaped inner flange structure.

[0007] The outward-folding structure is a composite folding structure formed by first folding the outer edge of the swing arm body towards the back and then folding it outward.

[0008] The extended connecting arm of the fixed bushing on the swing arm body is a bushing connecting arm, and the upper part of the bushing connecting arm is provided with a bushing upper connecting part for welding to the upper edge of the bushing.

[0009] The back of the swing arm body is formed by an inner flange structure and an outer flange structure to form a hollow structure, and an inner connecting plate for connecting with the ball head assembly / bushing is provided inside the hollow structure.

[0010] The swing arm body is provided with a rib structure, which includes rib portions extending to each of the connecting arms, forming an integral rib.

[0011] The end of the upper connecting part of the bushing has a bent structure.

[0012] The hollow structure of the swing arm body has an arc-shaped fixing structure at one end corresponding to the ball head assembly. An inner connecting plate is welded inside the arc-shaped fixing structure, and an arc-shaped connecting reinforcement is provided along the arc-shaped edge of the outer side of the arc-shaped fixing structure.

[0013] The hollow structure of the swing arm body has a groove on one end of its inner wall that matches the edge of the inner connecting plate.

[0014] Compared with the prior art, the present invention has the following advantages: The electric vehicle swing arm assembly has a reasonable structural design. The connecting arm that extends relatively large in the middle of the swing arm body is relatively large, and there is a through integral rib on the swing arm body. The outer edge is an outward-folding structure, the inner edge is an inward-folding structure, and there is an inner connecting plate inside, which effectively improves the overall structural strength of the swing arm assembly, especially the torsional strength. Attached Figure Description

[0015] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a schematic diagram showing the connection between the swing arm assembly and the subframe of the present invention.

[0016] Figure 2 This is a front view of the swing arm assembly of the present invention.

[0017] Figure 3 This is a schematic diagram of the back of the swing arm assembly of the present invention.

[0018] Figure 4 for Figure 3 Enlarged view of a portion of the diagram.

[0019] In the picture: 1. Subframe body, 2. Swing arm connecting frame, 3. Swing arm assembly, 301. Swing arm body, 302. Outward tilting structure, 303. Bushing upper connecting part, 304. Integral protruding rib, 305. Inward tilting structure, 306. Inner connecting plate, 307. Connecting reinforcement, 4. Ball joint assembly, 5. Bushing. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0021] like Figures 1 to 4 As shown, the electric vehicle swing arm assembly 3 includes a swing arm body 301 with three extended connecting arms. One outer extended connecting arm is used to fix the ball joint assembly 4, and the two inner extended connecting arms are used to fix the bushing 5. It is connected to the steering knuckle through the ball joint assembly and is hinged to the swing arm connecting frame 2 on the subframe body 1 through the fixed bushing.

[0022] The central region of the swing arm body 301 is larger than each of the extended connecting arms. The outer edge of the swing arm body has an outward-flaring structure 302, and the inner edge between the two extended connecting arms corresponding to the fixed bushing has an inward-flaring structure 305. The back of the swing arm body forms a hollow structure from the inward-flaring and outward-flaring structures; that is, all three extended connecting arms form hollow structures. The back of the swing arm body is formed by an inner flange structure and an outer flange structure to form an integral hollow structure. The integral hollow structure is provided with an inner connecting plate 306 for connecting with the ball head assembly / bushing; which effectively improves the structural strength and torsional strength.

[0023] The inner edge between the two extended connecting arms of the swing arm body corresponding to the fixed bushing is concave arc-shaped, and the inner flange structure is an arc-shaped inner flange structure, forming an integral arc-shaped inner side structure, which is reliable.

[0024] The outward-folding structure is a composite folding structure formed by first folding the outer edge of the swing arm body towards the back and then folding it outward, which effectively improves torsional strength.

[0025] The extended connecting arm of the fixed bushing on the swing arm body is a bushing connecting arm. The end of the bushing connecting arm has an arc-shaped groove, and the outer edge of the bushing is welded and fixed in the arc-shaped groove. Furthermore, the upper part of the bushing connecting arm is provided with a bushing upper connecting part 303 for welding and connecting with the upper edge of the bushing. The end of the bushing upper connecting part is a bent structure, which effectively improves the structural strength.

[0026] The swing arm body is provided with a rib structure, which includes ribs extending to each of the connecting arms, forming an integral rib 304, effectively improving the structural strength and torsional strength.

[0027] The hollow structure of the swing arm body has an arc-shaped fixed structure at one end corresponding to the ball head assembly. An inner connecting plate is welded inside the arc-shaped fixed structure, and an arc-shaped connecting reinforcement 307 is provided along the arc-shaped edge of the outer side of the arc-shaped fixed structure. The connecting reinforcement is an arc-shaped steel bar structure.

[0028] Furthermore, the hollow structure of the swing arm body has a slot on the inner wall of one end that matches the edge of the inner connecting plate. The inner connecting plate is inserted into the slot and then welded together, resulting in a stable and reliable structure that ensures product consistency.

[0029] The electric vehicle swing arm assembly of this invention has a reasonable structural design. The connecting arm extending from the middle region of the swing arm body is relatively large, and an integral through rib is provided on the swing arm body. The outer edge is an outward-folding structure, the inner edge is an inward-folding structure, and an inner connecting plate is provided inside. The above structures together constitute the overall swing arm body structure, which effectively improves the overall structural strength of the swing arm assembly, especially the torsional strength.

[0030] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0031] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An electric vehicle swing arm assembly, comprising a swing arm body, wherein the swing arm body has three extending connecting arms, one outer extending connecting arm for fixing a ball joint assembly, and two inner extending connecting arms for fixing a bushing, characterized in that: The central region of the swing arm body is larger than each of the extended connecting arms. The outer edge of the swing arm body is provided with an outward-folding structure, and the inner edge between the two extended connecting arms corresponding to the fixed bushing of the swing arm body is provided with an inward-folding structure.

2. The electric vehicle swing arm assembly as described in claim 1, characterized in that: The inner edge between the two extended connecting arms of the swing arm body corresponding to the fixed bushing is concave arc-shaped, and the inner flange structure is an arc-shaped inner flange structure.

3. The electric vehicle swing arm assembly as described in claim 1, characterized in that: The outward-folding structure is a composite folding structure formed by first folding the outer edge of the swing arm body towards the back and then folding it outward.

4. The electric vehicle swing arm assembly as described in claim 1, characterized in that: The extended connecting arm of the fixed bushing on the swing arm body is a bushing connecting arm, and the upper part of the bushing connecting arm is provided with a bushing upper connecting part for welding to the upper edge of the bushing.

5. The electric vehicle swing arm assembly as described in claim 1, characterized in that: The back of the swing arm body is formed by an inner flange structure and an outer flange structure to form a hollow structure, and an inner connecting plate for connecting with the ball head assembly / bushing is provided inside the hollow structure.

6. The electric vehicle swing arm assembly as described in claim 1, characterized in that: The swing arm body is provided with a rib structure, which includes rib portions extending to each of the connecting arms, forming an integral rib.

7. The electric vehicle swing arm assembly as described in claim 4, characterized in that: The end of the upper connecting part of the bushing has a bent structure.

8. The electric vehicle swing arm assembly as described in claim 5, characterized in that: The hollow structure of the swing arm body has an arc-shaped fixing structure at one end corresponding to the ball head assembly. An inner connecting plate is welded inside the arc-shaped fixing structure, and an arc-shaped connecting reinforcement is provided along the arc-shaped edge of the outer side of the arc-shaped fixing structure.

9. The electric vehicle swing arm assembly as described in claim 8, characterized in that: The hollow structure of the swing arm body has a groove on one end of its inner wall that matches the edge of the inner connecting plate.

Images