Lower swing arm assembly and vehicle

Abstract

The utility model provides a lower swing arm assembly and a vehicle. The lower swing arm assembly comprises a swing arm body and a ball pin assembly. A threaded hole is formed in the swing arm body; the ball pin assembly comprises a shell and a ball pin assembly. The shell is provided with a mounting space with a first opening; the ball pin assembly is mounted in the mounting space through the first opening; the outer side wall of the shell is provided with an assembly thread matched with the threaded hole; the ball pin assembly is fixedly installed on the swing arm body through threaded connection of the assembling thread and the threaded hole. The size of the lower swing arm assembly is reduced, the limitation of the lower swing arm assembly on wheel steering is reduced, and the production cost of the lower swing arm assembly is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and particularly relates to a lower swing arm assembly and a vehicle. Background Art

[0002] In the related art, in the lower control arm assembly of the vehicle suspension system, the ball pin assembly is usually fixedly connected to the control arm body by means of three-point bolt connection. The disadvantage of the above scheme is that since the ball pin assembly needs to be bolted to the control arm body at three positions, its volume is relatively large, which will also cause the volume of the lower control arm assembly to increase accordingly, thereby requiring a larger installation space, which is not convenient for installation and layout, and will also limit wheel steering, and increase the weight and production cost of the lower control arm assembly. Utility Model Content

[0003] The utility model aims at solving the technical problems in the prior art such as the large volume of the lower swing arm assembly and provides a lower swing arm assembly and a vehicle.

[0004] In view of the above technical problems, the embodiment of the utility model provides a lower swing arm assembly, including a swing arm body and a ball pin assembly; the swing arm body is provided with a threaded hole; the ball pin assembly includes a housing and a ball pin assembly; the housing is provided with an installation space with a first opening; the ball pin assembly is installed in the installation space through the first opening;

[0005] An outer side wall of the shell is provided with an assembly thread matched with the threaded hole; the ball and pin assembly is fixedly mounted on the swing arm body through the threaded connection between the assembly thread and the threaded hole.

[0006] Optionally, a limiting flange is provided on the outer side wall of the shell, and the first opening and the assembly thread are arranged on opposite sides of the limiting flange.

[0007] Optionally, a clamping surface is provided on the edge of the limiting flange.

[0008] Optionally, a screwing portion is provided on the housing, and the screwing portion and the first opening are respectively arranged on opposite sides of the assembly thread.

[0009] Optionally, the ball and pin assembly includes a ball and pin rod and a mounting seat; the mounting seat is installed in the installation space and forms a rotation space with a second opening, and the second opening is arranged opposite to the first opening; one end of the ball and pin rod is rotatably installed in the rotation space, and the other end of the ball and pin rod sequentially extends through the second opening and the first opening.

[0010] Optionally, the housing comprises a rib arranged around the first opening;

[0011] The mounting seat includes a ball seat and a blocking seat that enclose the rotation space; the ball seat is installed in the mounting space, and the blocking seat is sleeved on the ball pin rod and abuts between the ball seat and the retaining edge to prevent the ball pin rod from escaping from the rotation space.

[0012] Optionally, the ball and pin assembly further includes a dust cover connected between the housing and the ball and pin rod and used for covering the first opening.

[0013] Optionally, a first mounting hole is provided on the swing arm body; the axis of the first mounting hole is parallel to the axis of the threaded hole; and the lower swing arm assembly also includes a first bushing installed on the first mounting hole.

[0014] Optionally, a second mounting hole is provided on the swing arm body; the axis of the second mounting hole is perpendicular to the axis of the threaded hole; and the lower swing arm assembly also includes a second bushing installed on the second mounting hole.

[0015] A vehicle comprises the lower swing arm assembly.

[0016] The utility model discloses a lower swing arm assembly comprising a swing arm body and a ball pin assembly; the swing arm body is provided with a threaded hole; the ball pin assembly comprises a shell and a ball pin assembly; the shell is provided with an installation space with a first opening; the ball pin assembly is installed in the installation space through the first opening; the outer side wall of the shell is provided with an assembly thread matched with the threaded hole; the ball pin assembly is fixedly installed on the swing arm body through the threaded connection between the assembly thread and the threaded hole.

[0017] In the present invention, by providing a threaded hole on the swing arm body and directly providing an assembly thread that matches the threaded hole on the housing of the ball pin assembly, the ball pin assembly can be fixedly installed on the swing arm body through the threaded connection between the assembly thread and the threaded hole. In the present invention, the ball pin assembly and the swing arm body only need to be fixedly connected at one position point, and there is no need to add additional connecting parts to the ball pin assembly, which reduces the volume and weight of the ball pin assembly, thereby reducing the volume and weight of the lower swing arm assembly, reducing the restriction of the lower swing arm assembly on wheel steering, and reducing the production cost of the lower swing arm assembly. In addition, through the threaded connection between the assembly thread and the threaded hole, the connection tightness between the ball pin assembly and the swing arm body is ensured, and at the same time, the disassembly and assembly between the ball pin assembly and the swing arm body is simple, realizing the replaceability of the ball pin assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of a lower swing arm assembly provided in one embodiment of the utility model.

[0020] Figure 2 It is a structural schematic diagram of a swing arm body of a lower swing arm assembly provided in one embodiment of the utility model.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of a ball pin assembly of a lower swing arm assembly provided in one embodiment of the utility model.

[0022] Figure 4 It is a structural schematic diagram of a ball pin assembly of a lower swing arm assembly provided in one embodiment of the utility model.

[0023] The reference numerals in the specification are as follows:

[0024] 100, swing arm body; 110, threaded hole; 120, first mounting hole; 130, second mounting hole; 200, ball pin assembly; 210, housing; 211, first opening; 212, assembly thread; 213, limiting flange; 2131, holding surface; 214, screw connection; 215, retaining edge; 220, ball pin assembly; 221, ball pin rod; 222, mounting seat; 2221, second opening; 2222, ball seat; 2223, blocking seat; 230, dust cover; 300, first bushing; 400, second bushing. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0027] like Figures 1 to 4 As shown, an embodiment of the utility model provides a lower swing arm assembly, including a swing arm body 100 and a ball and pin assembly 200; a threaded hole 110 is provided on the swing arm body 100; the ball and pin assembly 200 includes a shell 210 and a ball and pin assembly 220; an installation space with a first opening 211 is provided on the shell 210; the ball and pin assembly 220 is installed in the installation space through the first opening 211; an assembly thread 212 adapted to the threaded hole 110 is provided on the outer wall of the shell 210; the ball and pin assembly 200 is fixedly installed on the swing arm body 100 through the threaded connection between the assembly thread 212 and the threaded hole 110.

[0028] It can be understood that the lower swing arm assembly in this embodiment can be used in a vehicle suspension system and installed between a wheel and a vehicle body, wherein the end of the ball pin assembly 220 away from the housing 210 is connected to the wheel, and the swing arm body 100 is connected to the vehicle body. Further, the material of the swing arm body 100 can be a metal material such as steel or aluminum alloy, wherein when the swing arm body 100 is steel, the swing arm body 100 can be formed by sheet metal stamping, and when the swing arm body 100 is an aluminum alloy material, the swing arm body 100 can be formed by forging or casting. The threaded hole 110 can be formed by welding a threaded pipe on the swing arm body 100, or by directly tapping the swing arm body 100. The assembly thread 212 on the outer wall of the housing 210 is adapted to the threaded hole 110, so that the ball pin assembly 200 can be fixedly installed on the swing arm body 100 by threaded connection between the assembly thread 212 and the threaded hole 110.

[0029] In the above-mentioned embodiment of the utility model, by setting the threaded hole 110 on the swing arm body 100, and directly setting the assembly thread 212 adapted to the threaded hole 110 on the shell 210 of the ball and pin assembly 200, the ball and pin assembly 200 can be fixedly installed on the swing arm body 100 through the threaded connection between the assembly thread 212 and the threaded hole 110. In the utility model, the ball and pin assembly 200 and the swing arm body 100 only need to be fixedly connected at one position point (that is, the threaded connection between the assembly thread 212 and the threaded hole 110), and there is no need to add additional connecting parts to the ball and pin assembly 200, thereby reducing the volume and weight of the ball and pin assembly 200, thereby reducing the volume and weight of the lower swing arm assembly, reducing the restriction of the lower swing arm assembly on the steering of the wheel, and reducing the production cost of the lower swing arm assembly. In addition, by assembling the threaded connection between the threaded thread 212 and the threaded hole 110, the tightness of the connection between the ball pin assembly 200 and the swing arm body 100 is ensured, while the disassembly and assembly between the ball pin assembly 200 and the swing arm body 100 is facilitated, thereby achieving the replaceability of the ball pin assembly 200.

[0030] In one embodiment, a limiting flange 213 is provided on the outer wall of the housing 210, and the first opening 211 and the assembly thread 212 are arranged on opposite sides of the limiting flange 213. It can be understood that the limiting flange 213 can limit the assembly position between the ball pin assembly 200 and the swing arm body 100. As long as the limiting flange 213 abuts against the position corresponding to the edge of the threaded hole 110 on the swing arm body 100, it can be confirmed that the ball pin assembly 200 has been completely installed in the threaded hole 110 of the swing arm body 100, which simplifies the installation between the ball pin assembly 200 and the swing arm body 100 and avoids the ball pin assembly 200 from being installed too deep or too shallow. The limiting flange 213 can be set at a preset position on the outer wall of the shell 210 according to actual conditions, so as to ensure the tightness of the connection between the ball and pin assembly 200 and the swing arm body 100, and make the ball and pin assembly 220 maintain a preset relative distance from the swing arm body 100.

[0031] like Figure 3 As shown, in one embodiment, the edge of the limiting flange 213 is provided with a clamping surface 2131. It can be understood that the clamping surface 2131 can be a polygonal surface provided on the edge of the limiting flange 213, for example, the clamping surface 2131 can be a hexagonal or rectangular surface, etc., and the user can clamp a tool such as a socket or a wrench on the clamping surface 2131, thereby driving the ball and pin assembly 200 to rotate through the tool such as the socket or the wrench, and then screwing the assembly thread 212 of the ball and pin assembly 200 into the threaded hole 110.

[0032] like Figure 4 As shown, in one embodiment, the housing 210 is provided with a screwing portion 214, and the screwing portion 214 and the first opening 211 are respectively arranged on opposite sides of the assembly thread 212. It can be understood that the screwing portion 214 can be a screwing groove formed in the housing 210, and the screwing groove can be in a shape of a slot, a cross, or a hexagonal socket, so that the user can fit a tool such as a screwdriver or a hexagonal wrench into the screwing groove, thereby driving the ball pin assembly 200 to rotate through the above-mentioned screwdriver or hexagonal wrench, and then screwing the assembly thread 212 of the ball pin assembly 200 into the threaded hole 110. The screwing portion 214 may also be a screwing block protruding from the shell 210, and the screwing block may be a polygonal prism in a hexagonal or rectangular shape. The user may clamp the screwing block with a tool such as a socket or a wrench, thereby driving the ball and pin assembly 200 to rotate with the tool such as the socket or the wrench, and then screwing the assembly thread 212 of the ball and pin assembly 200 into the threaded hole 110.

[0033] like Figure 4As shown, in one embodiment, the ball pin assembly 220 includes a ball pin rod 221 and a mounting seat 222; the mounting seat 222 is installed in the installation space and forms a rotation space with a second opening 2221, and the second opening 2221 is arranged opposite to the first opening 211; one end of the ball pin rod 221 is rotatably installed in the rotation space, and the other end of the ball pin rod 221 sequentially passes through the second opening 2221 and the first opening 211 and extends out. It can be understood that the end of the ball pin rod 221 installed in the rotation space is a ball head, and the rotation space is a spherical space adapted to the ball head. The diameter of the second opening 2221 is smaller than the diameter of the ball head, so as to prevent the ball pin rod 221 from falling out of the rotation space. The mounting seat 222 can be composed of a plurality of components, so as to facilitate the installation of the ball head in the rotation space. Further, the end of the ball pin rod 221 away from the ball head can be provided with a connecting portion for connecting to the wheel, and the connecting portion can be an external thread provided on the ball pin rod 221. The mounting seat 222 is fixedly installed in the mounting space, and the ball pin rod 221 is rotatably installed in the rotating space. The end of the ball pin rod 221 extending out of the first opening 211 can swing relative to the shell 210 and the swing arm body 100, so that the wheel can have a certain range of motion relative to the vehicle body when turning, ensuring that the wheel can turn smoothly and maintain good suspension performance.

[0034] like Figure 4 As shown, in one embodiment, the housing 210 includes a retaining edge 215 arranged around the first opening 211; the mounting seat 222 includes a ball seat 2222 and a blocking seat 2223 that enclose the rotation space; the ball seat 2222 is installed in the mounting space, and the blocking seat 2223 is sleeved on the ball pin rod 221 and abuts between the ball seat 2222 and the retaining edge 215 to prevent the ball pin rod 221 from escaping from the rotation space. It can be understood that the second opening 2221 is arranged on the ball seat 2222 and the blocking seat 2223. The blocking seat 2223 can prevent the ball pin rod 221 from escaping from the rotation space, and the blocking seat 2223 can also limit the shaking of the ball seat 2222 in the mounting space, reducing the friction loss between the ball seat 2222 and the inner side wall of the housing 210.

[0035] like Figure 3 and Figure 4As shown, in one embodiment, the ball and pin assembly 200 further includes a dust cover 230 connected between the housing 210 and the ball and pin rod 221 and used to cover the first opening 211. It can be understood that the dust cover 230 can prevent foreign matter such as dust from entering the installation space or the rotation space through the first opening 211. One end of the dust cover 230 connected to the housing 210 can be located between the limit flange 213 and the first opening 211, so as to avoid covering the limit flange 213 and causing interference with the abutment between the limit flange 213 and the swing arm body 100. The dust cover 230 can be made of elastic material (such as rubber, etc.). The connection method of the dust cover 230 to the housing 210 or the ball and pin rod 221 includes but is not limited to one or more of bonding or clamping. Specifically, one end of the dust cover 230 can be connected to the ball and pin rod 221 by bonding, and the other end of the dust cover 230 can be clamped on the housing 210 by a clamp.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the swing arm body 100 is provided with a first mounting hole 120; the axis of the first mounting hole 120 is parallel to the axis of the threaded hole 110; the lower swing arm assembly further includes a first bushing 300 mounted on the first mounting hole 120. It can be understood that the first mounting hole 120 can be a sleeve welded on the swing arm body 100, and the first mounting hole 120 can also be set on the swing arm body 100 by directly processing on the swing arm body 100. The first bushing 300 includes an inner tube, an outer tube arranged outside the inner tube, and a rubber body arranged between the inner tube and the outer tube, and the outer tube is installed in the first mounting hole 120. The length of the outer tube or the inner tube can be set according to actual conditions. The connection method between the first bushing 300 and the first mounting hole 120 includes but is not limited to one or more of the methods such as interference connection, welding or clamping, as long as the first bushing 300 can be firmly installed in the first mounting hole 120. The lower swing arm assembly is connected to the vehicle body through the inner tube, and the interaction force between the wheel and the vehicle body is absorbed by the rubber body, thereby improving the stability of the vehicle during operation and preventing the swing arm body 100 from being deformed due to the above-mentioned interaction force.

[0037] like Figure 1 and Figure 2As shown, in one embodiment, the swing arm body 100 is provided with a second mounting hole 130; the axis of the second mounting hole 130 is perpendicular to the axis of the threaded hole 110; the lower swing arm assembly further includes a second bushing 400 mounted on the second mounting hole 130. It can be understood that the second mounting hole 130 can be a sleeve welded on the swing arm body 100, and the second mounting hole 130 can also be set on the swing arm body 100 by directly processing on the swing arm body 100. The structure of the second bushing 400 is substantially the same as that of the first bushing 300, and will not be repeated here. The connection method between the second bushing 400 and the second mounting hole 130 includes, but is not limited to, one or more of interference connection, welding or clamping, as long as the second bushing 400 can be firmly mounted in the second mounting hole 130. The lower swing arm assembly is connected to the vehicle body through the inner tube of the second bushing 400, and the rubber body of the second bushing 400 absorbs the interaction force between the wheel and the vehicle body, thereby improving the stability of the vehicle during operation and preventing the swing arm body 100 from being deformed due to the above-mentioned interaction force.

[0038] like Figures 1 to 4 As shown, an embodiment of the utility model further provides a vehicle, comprising the lower swing arm assembly. The specific structure of the lower swing arm assembly can refer to the above embodiment, and will not be repeated here.

[0039] In the vehicle of the above-mentioned embodiment of the utility model, by setting the threaded hole 110 on the swing arm body 100, and directly setting the assembly thread 212 adapted to the threaded hole 110 on the shell 210 of the ball and pin assembly 200, the ball and pin assembly 200 can be fixedly installed on the swing arm body 100 through the threaded connection between the assembly thread 212 and the threaded hole 110. In the utility model, the ball and pin assembly 200 and the swing arm body 100 only need to be fixedly connected at one position point (that is, the threaded connection between the assembly thread 212 and the threaded hole 110), and there is no need to add additional connecting parts to the ball and pin assembly 200, thereby reducing the volume and weight of the ball and pin assembly 200, thereby reducing the volume and weight of the lower swing arm assembly, reducing the restriction of the lower swing arm assembly on the steering of the wheel, and reducing the production cost of the lower swing arm assembly. In addition, by assembling the threaded connection between the threaded thread 212 and the threaded hole 110, the tightness of the connection between the ball pin assembly 200 and the swing arm body 100 is ensured, while the disassembly and assembly between the ball pin assembly 200 and the swing arm body 100 is facilitated, thereby achieving the replaceability of the ball pin assembly 200.

[0040] The above are merely embodiments of the lower control arm assembly and the vehicle of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lower swing arm assembly, characterized in that: It comprises a swing arm body and a ball pin assembly; the swing arm body is provided with a threaded hole; the ball pin assembly comprises a housing and a ball pin assembly; the housing is provided with an installation space having a first opening; the ball pin assembly is installed in the installation space through the first opening; An outer side wall of the shell is provided with an assembly thread matched with the threaded hole; the ball and pin assembly is fixedly mounted on the swing arm body through the threaded connection between the assembly thread and the threaded hole.

2. The lower swing arm assembly according to claim 1, characterized in that: A limiting flange is provided on the outer side wall of the shell, and the first opening and the assembly thread are arranged on opposite sides of the limiting flange.

3. The lower swing arm assembly according to claim 2, characterized in that: A clamping surface is provided on the edge of the limiting flange.

4. The lower swing arm assembly according to claim 1, characterized in that: The housing is provided with a screwing portion, and the screwing portion and the first opening are respectively arranged on opposite sides of the assembly thread.

5. The lower swing arm assembly according to any one of claims 1 to 4, characterized in that: The ball and pin assembly includes a ball and pin rod and a mounting seat; the mounting seat is installed in the mounting space and forms a rotation space with a second opening, and the second opening is arranged opposite to the first opening; one end of the ball and pin rod is rotatably installed in the rotation space, and the other end of the ball and pin rod sequentially extends through the second opening and the first opening.

6. The lower swing arm assembly according to claim 5, characterized in that: The housing comprises a rib arranged around the first opening; The mounting seat includes a ball seat and a blocking seat that enclose the rotation space; the ball seat is installed in the mounting space, and the blocking seat is sleeved on the ball pin rod and abuts between the ball seat and the retaining edge to prevent the ball pin rod from escaping from the rotation space.

7. The lower swing arm assembly according to claim 6, characterized in that: The ball and pin assembly further includes a dust cover connected between the housing and the ball and pin rod and used for covering the first opening.

8. The lower swing arm assembly according to claim 1, characterized in that: A first mounting hole is provided on the swing arm body; the axis of the first mounting hole is parallel to the axis of the threaded hole; and the lower swing arm assembly also includes a first bushing installed on the first mounting hole.

9. The lower swing arm assembly according to claim 1, characterized in that: A second mounting hole is provided on the swing arm body; the axis of the second mounting hole is perpendicular to the axis of the threaded hole; and the lower swing arm assembly also includes a second bushing installed on the second mounting hole.

10. A vehicle, characterized in that: It comprises a lower swing arm assembly as described in any one of claims 1 to 9.

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