Novel trailing arm suspension assembly

Abstract

The invention belongs to the technical field of vehicle chassis systems, and particularly relates to a novel trailing arm suspension assembly which is used for achieving integrated design of a hub motor assembly and the trailing arm suspension assembly. The novel trailing arm suspension assembly comprises a trailing arm mounting flange, a trailing arm, a bearing, a sealing ring, a locking mechanism, a rubber limiter, a hub motor, a waterproof end cover, a spring pin shaft, a fastener and the like. And the trailing arm is in threaded connection with the hub motor, is connected with the trailing arm mounting flange through a bearing, a sealing ring and a locking mechanism, and rotates around a mounting axis. The rubber limiting block and the motor protecting cover are in threaded connection with the trailing arm, the length size of the trailing arm and the size of the bearing can be adjusted according to design requirements to adapt to different load input and boundary arrangement requirements, the installation positions of the rubber limiting block and the spring are designed in a mirror image mode, the left trailing arm suspension assembly and the right trailing arm suspension assembly can use the same part, the part types are reduced, and cost is reduced. And the universal and modular design is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle chassis systems, and in particular relates to a novel trailing arm suspension assembly. Background Art

[0002] Electric vehicles are an important development trend in the current automotive industry, involving core technologies in vehicle engineering, motor drive control, electrical control, etc. Electric vehicle drive types mainly include wheel-side motor drive, bridge motor drive and hub motor drive. In terms of layout, the wheel-side motor and bridge motor drive types are similar to the traditional hydraulic drive type. The wheel-side motor and bridge motor are arranged on the inside of the car, connected to the wheel-side reducer through the wheel-side transmission half shaft, and the wheel speed and torque are adjusted by the motor controller; the hub motor drive type is a hub motor installed in the drive wheel to drive the wheel. The drive wheel can be controlled independently or as a whole, eliminating other transmission components. This drive type is conducive to overall layout and increased ground clearance.

[0003] The structural type of the suspension depends largely on the connection method of the vehicle's drive components. The matching method of independent suspension + hub motor drive is widely used in the electric vehicle industry. In order to ensure a larger space size inside the vehicle body, the longitudinal arm suspension type is widely used. Depending on the current electric drive factors, the suspension type of special vehicles is also adaptively improved. Considering the larger internal space of the vehicle body, the longitudinal arm suspension type is mostly used for non-steering axles. Due to the uncertainty of vehicle operating conditions and the variability of the body interface size, the structural types and types of the longitudinal arm suspension are various, which leads to poor versatility and interchangeability of the suspension module. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a reliable method for designing a trailing arm suspension assembly.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention provides a novel trailing arm suspension assembly, the novel trailing arm suspension assembly comprising: a trailing arm suspension assembly 1 and a wheel hub motor 2;

[0008] The longitudinal arm suspension assembly 1 includes: a longitudinal arm 7, a first lip seal ring 8, a first bearing 9, a second bearing 10, a second lip seal ring 18, a first O-ring 19, a spacer 17, a locking nut 11, a locking washer 12, a longitudinal arm mounting end cover 3, a waterproof pad 4, a second O-ring 5, and a motor cover 6;

[0009] The longitudinal arm 7 and the wheel hub motor 2 are integrated in design, one end of the longitudinal arm 7 is connected to the wheel hub motor 2, the cable 20 is connected to the cabin penetration connector 21 along the inner cavity of the longitudinal arm 7, and the connector protection cover 3 is connected to the longitudinal arm 7 using a standard part 16;

[0010] The other end of the longitudinal arm 7 is connected to the longitudinal arm mounting flange 13 through the first bearing 9 and the second bearing 10. The spring pin 14 on the longitudinal arm 7 is connected to the lower end of the spring. The limit device 15 is connected to the longitudinal arm 7 through bolts.

[0011] The trailing arm 7 rotates around the mounting axis of the trailing arm mounting flange 13, thereby driving the extension and compression of the spring to achieve the up and down bouncing of the wheel.

[0012] The longitudinal arm 7 is connected to the motor cover 6 and the second O-ring 5 is connected to the hub motor 2 through the fastener 16, and the wiring harness 20 is arranged in the hollow cavity of the longitudinal arm 7;

[0013] The connection scheme of the longitudinal arm 7 and one side of the vehicle body is as follows: the first bearing 9 and the second bearing 10 are installed between the longitudinal arm 7 and the longitudinal arm mounting flange 13, and the longitudinal arm mounting flange 13 is screwed to the vehicle body.

[0014] The longitudinal arm 7, the locking nut 11, and the locking washer 12 form a locking mechanism.

[0015] Among them, the first lip seal ring 8, the second lip seal ring 18, the first O-ring 19, the spacer 17, the locking nut 11, and the locking gasket 12 form a sealing structure to achieve the waterproof and dustproof function of the longitudinal arm rotating mechanism.

[0016] In addition, the present invention also provides a novel trailing arm suspension assembly, which includes: a trailing arm mounting flange, a trailing arm, a sealing mechanism, a locking mechanism, a rubber limiter, a wheel hub motor, a motor cover, a spring pin shaft, and a fastener;

[0017] The longitudinal arm is screwed to the wheel hub motor, and is connected to the longitudinal arm mounting flange through a sealing mechanism and a locking mechanism, and realizes rotation around the mounting axis; the rubber limiter and the motor cover are screwed to the longitudinal arm.

[0018] The housing of the wheel hub motor is integrated with the trailing arm suspension assembly to form a trailing arm motor housing;

[0019] The motor housing of the trailing arm adopts a hollow structure design, and the connector and high and low voltage cable harnesses are arranged inside the hollow cavity of the trailing arm;

[0020] The trailing arm suspension assembly enables quick unlocking / plugging / replacing of mechanical structures and high and low voltage cable harnesses;

[0021] The trailing arm suspension assembly uses a sealing mechanism to achieve a waterproof function of the trailing arm suspension assembly;

[0022] The trailing arm suspension assembly uses a locking mechanism to achieve axial limitation of the trailing arm suspension assembly.

[0023] Among them, the longitudinal arm suspension assembly includes a sealing structure composed of a longitudinal arm, a lip seal ring, a spacer, and an O-ring to achieve the waterproof function of the longitudinal arm suspension assembly.

[0024] Among them, the locking mechanism composed of the longitudinal arm, locking nut and locking washer ensures that the longitudinal arm drives the inner ring of the bearing to rotate and limits the axial clearance between the longitudinal arm and the bearing.

[0025] In addition, the present invention also provides a novel longitudinal arm suspension assembly, which realizes the integrated design of the longitudinal arm suspension assembly and the wheel hub drive motor.

[0026] Among them, the novel trailing arm suspension assembly includes a wheel hub drive motor, a built-in electrical cable, a high-power through-cabin connector, and a trailing arm suspension mechanism;

[0027] The wheel hub drive motor is screwed to one end of the trailing arm suspension assembly, the built-in electrical cable passes through the inner cavity of the trailing arm through a high-power through-cabin connector and is connected to an interface on the vehicle body, and the trailing arm suspension mechanism is connected to the vehicle body attachment seat through a bearing group;

[0028] The function / structure of the trailing arm suspension mechanism and the wheel hub drive motor are integrated;

[0029] The unified interface definition and type of the trailing arm suspension assembly integrated with the trailing arm suspension mechanism and the wheel hub drive motor in the front, rear, left and right directions of the whole vehicle is realized; the integrated module is universal for the whole vehicle and can be quickly unlocked / plugged / replaced.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] When designing a trailing arm suspension assembly, the present invention can adjust the length and bearing size of the trailing arm according to design requirements to adapt to different load inputs and layout boundary requirements. The mounting interfaces on the trailing arm, such as the mounting positions of rubber limit blocks and springs, can be designed using a mirror image method, so that the left and right trailing arm suspension assemblies can use the same parts, reduce the types of parts, and improve the universal modular design of the suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the assembly drawing of the trailing arm suspension assembly;

[0034] Figure 2 This is the overall component analysis diagram of the trailing arm suspension. DETAILED DESCRIPTION

[0035] In order to make the purpose, content, and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0036] In order to solve the above technical problems, the present invention provides a novel trailing arm suspension assembly, the novel trailing arm suspension assembly comprising: a trailing arm suspension assembly 1 and a wheel hub motor 2;

[0037] The longitudinal arm suspension assembly 1 includes: a longitudinal arm 7, a first lip seal ring 8, a first bearing 9, a second bearing 10, a second lip seal ring 18, a first O-ring 19, a spacer 17, a locking nut 11, a locking washer 12, a longitudinal arm mounting end cover 3, a waterproof pad 4, a second O-ring 5, and a motor cover 6;

[0038] The longitudinal arm 7 and the wheel hub motor 2 are integrated in design, one end of the longitudinal arm 7 is connected to the wheel hub motor 2, the cable 20 is connected to the cabin penetration connector 21 along the inner cavity of the longitudinal arm 7, and the connector protection cover 3 is connected to the longitudinal arm 7 using a standard part 16;

[0039] The other end of the longitudinal arm 7 is connected to the longitudinal arm mounting flange 13 through the first bearing 9 and the second bearing 10. The spring pin 14 on the longitudinal arm 7 is connected to the lower end of the spring. The limit device 15 is connected to the longitudinal arm 7 through bolts.

[0040] The trailing arm 7 rotates around the mounting axis of the trailing arm mounting flange 13, thereby driving the extension and compression of the spring to achieve the up and down bouncing of the wheel.

[0041] The longitudinal arm 7 is connected to the motor cover 6 and the second O-ring 5 is connected to the hub motor 2 through the fastener 16, and the wiring harness 20 is arranged in the hollow cavity of the longitudinal arm 7;

[0042] The connection scheme of the longitudinal arm 7 and one side of the vehicle body is as follows: the first bearing 9 and the second bearing 10 are installed between the longitudinal arm 7 and the longitudinal arm mounting flange 13, and the longitudinal arm mounting flange 13 is screwed to the vehicle body.

[0043] The longitudinal arm 7, the locking nut 11, and the locking washer 12 form a locking mechanism.

[0044] Among them, the first lip seal ring 8, the second lip seal ring 18, the first O-ring 19, the spacer 17, the locking nut 11, and the locking gasket 12 form a sealing structure to achieve the waterproof and dustproof function of the longitudinal arm rotating mechanism.

[0045] In addition, the present invention also provides a novel trailing arm suspension assembly, which includes: a trailing arm mounting flange, a trailing arm, a sealing mechanism, a locking mechanism, a rubber limiter, a wheel hub motor, a motor cover, a spring pin shaft, and a fastener;

[0046] The longitudinal arm is screwed to the wheel hub motor, and is connected to the longitudinal arm mounting flange through a sealing mechanism and a locking mechanism, and realizes rotation around the mounting axis; the rubber limiter and the motor cover are screwed to the longitudinal arm.

[0047] The housing of the wheel hub motor is integrated with the trailing arm suspension assembly to form a trailing arm motor housing;

[0048] The motor housing of the trailing arm adopts a hollow structure design, and the connector and high and low voltage cable harnesses are arranged inside the hollow cavity of the trailing arm;

[0049] The trailing arm suspension assembly enables quick unlocking / plugging / replacing of mechanical structures and high and low voltage cable harnesses;

[0050] The trailing arm suspension assembly uses a sealing mechanism to achieve a waterproof function of the trailing arm suspension assembly;

[0051] The trailing arm suspension assembly uses a locking mechanism to achieve axial limitation of the trailing arm suspension assembly.

[0052] Among them, the longitudinal arm suspension assembly includes a sealing structure composed of a longitudinal arm, a lip seal ring, a spacer, and an O-ring to achieve the waterproof function of the longitudinal arm suspension assembly.

[0053] Among them, the locking mechanism composed of the longitudinal arm, locking nut and locking washer ensures that the longitudinal arm drives the inner ring of the bearing to rotate and limits the axial clearance between the longitudinal arm and the bearing.

[0054] In addition, the present invention also provides a novel longitudinal arm suspension assembly, which realizes the integrated design of the longitudinal arm suspension assembly and the wheel hub drive motor.

[0055] Among them, the novel trailing arm suspension assembly includes a wheel hub drive motor, a built-in electrical cable, a high-power through-cabin connector, and a trailing arm suspension mechanism;

[0056] The wheel hub drive motor is screwed to one end of the trailing arm suspension assembly, the built-in electrical cable passes through the inner cavity of the trailing arm through a high-power through-cabin connector and is connected to an interface on the vehicle body, and the trailing arm suspension mechanism is connected to the vehicle body attachment seat through a bearing group;

[0057] The function / structure of the trailing arm suspension mechanism and the wheel hub drive motor are integrated;

[0058] The unified interface definition and type of the trailing arm suspension assembly integrated with the trailing arm suspension mechanism and the wheel hub drive motor in the front, rear, left and right directions of the whole vehicle is realized; the integrated module is universal for the whole vehicle and can be quickly unlocked / plugged / replaced.

[0059] Example 1

[0060] The design idea of ​​the trailing arm suspension assembly is to integrate the trailing arm suspension with the wheel hub motor housing, and design the structural layout of the trailing arm, wheel hub motor, cable, and cabin connector according to the functional requirements of the trailing arm suspension and the wheel hub motor, so that the trailing arm suspension and the wheel hub motor become an independent drive module, which is universal for left and right. The independent drive module can be quickly replaced as needed.

[0061] Figure 1 This is the assembly drawing of the trailing arm suspension assembly. Figure 2 This is an exploded diagram of the longitudinal arm suspension assembly, including the longitudinal arm suspension assembly 1 and the wheel hub motor 2. The longitudinal arm 7 and the wheel hub motor 2 are integrated, one end of the longitudinal arm 7 is connected to the wheel hub motor 2, the cable 20 is connected to the through-cabin connector 21 along the inner cavity of the longitudinal arm 7, and the connector protection cover 3 is connected to the longitudinal arm 7 using a standard part 16. The other end of the longitudinal arm 7 is connected to the longitudinal arm mounting flange 13 through bearings 9 and 10, the lower end of the spring is connected to the spring pin 14 on the longitudinal arm, and the limit device 15 is connected to the longitudinal arm 7 through bolts. The longitudinal arm 7 rotates around the mounting axis of the longitudinal arm mounting flange 13, thereby driving the extension and compression of the spring to achieve the up and down jumping of the wheel. Figure 1 It is an assembly drawing of the trailing arm suspension assembly of the present invention, wherein the trailing arm suspension assembly 1 includes a trailing arm 7, a first lip seal ring 8, a bearing 9, a bearing 10, a second lip seal ring 18, a first O-ring 19, a spacer 17, a locking nut 11, a locking gasket 12, a trailing arm mounting end cover 3, a waterproof pad 4, a second O-ring 5, and a motor cover 6.

[0062] The design principles and features of the integrated design of the trailing arm suspension assembly of the present invention are described in detail below.

[0063] The design principle of the trailing arm suspension assembly is that the trailing arm 7 is connected to the motor cover 6 through the fastener 16, the second O-ring 5 is connected to the hub motor 2, and the wiring harness 20 is arranged in the hollow cavity of the trailing arm 7; the connection scheme of the trailing arm 7 and one side of the vehicle body is: the bearing 9 and the bearing 10 are installed between the trailing arm 7 and the trailing arm mounting flange 13, the trailing arm mounting flange 13 is screwed to the vehicle body, and the trailing arm 7, the locking nut 11, and the locking gasket 12 form a locking mechanism;

[0064] The first lip seal ring 8, the second lip seal ring 18, the first O-ring 19, the spacer 17, the locking nut 11, and the locking gasket 12 form a sealing structure to achieve the waterproof and dustproof function of the longitudinal arm rotating mechanism.

[0065] It should be noted that the present invention is a modular design system for a vehicle chassis, which has a simple structure, reliable performance, and is easy to repair and maintain. Those skilled in the art can easily understand that the trailing arm suspension assembly designed by the present invention can be installed in different types of vehicles in the above manner, and that various types of changes and modifications can be made to the present invention without departing from the spirit and scope of the present invention as defined by the appended claims.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A new type of trailing arm suspension assembly, characterized in that: The novel trailing arm suspension assembly comprises: a trailing arm suspension assembly 1 and a wheel hub motor 2; The longitudinal arm suspension assembly 1 includes: a longitudinal arm 7, a first lip seal ring 8, a first bearing 9, a second bearing 10, a second lip seal ring 18, a first O-ring 19, a spacer 17, a locking nut 11, a locking washer 12, a longitudinal arm mounting end cover 3, a waterproof pad 4, a second O-ring 5, and a motor cover 6; The longitudinal arm 7 and the wheel hub motor 2 are integrated in design, one end of the longitudinal arm 7 is connected to the wheel hub motor 2, the cable 20 is connected to the cabin penetration connector 21 along the inner cavity of the longitudinal arm 7, and the connector protection cover 3 is connected to the longitudinal arm 7 using a standard part 16; The other end of the longitudinal arm 7 is connected to the longitudinal arm mounting flange 13 through the first bearing 9 and the second bearing 10. The spring pin 14 on the longitudinal arm 7 is connected to the lower end of the spring. The limit device 15 is connected to the longitudinal arm 7 through bolts. The trailing arm 7 rotates around the mounting axis of the trailing arm mounting flange 13, thereby driving the extension and compression of the spring to achieve the up and down bouncing of the wheel.

2. The novel trailing arm suspension assembly as claimed in claim 1, characterized in that: The longitudinal arm 7 is connected to the motor cover 6 and the second O-ring 5 is connected to the hub motor 2 through the fastener 16, and the wiring harness 20 is arranged in the hollow cavity of the longitudinal arm 7; The connection scheme of the longitudinal arm 7 and one side of the vehicle body is as follows: the first bearing 9 and the second bearing 10 are installed between the longitudinal arm 7 and the longitudinal arm mounting flange 13, and the longitudinal arm mounting flange 13 is screwed to the vehicle body.

3. The novel trailing arm suspension assembly as claimed in claim 2 is characterized in that: The longitudinal arm 7, the locking nut 11, and the locking washer 12 form a locking mechanism.

4. The novel trailing arm suspension assembly as claimed in claim 2, characterized in that: The first lip seal ring 8, the second lip seal ring 18, the first O-ring 19, the spacer 17, the locking nut 11, and the locking gasket 12 form a sealing structure to achieve the waterproof and dustproof function of the longitudinal arm rotating mechanism.

5. A new type of trailing arm suspension assembly, characterized in that: The novel trailing arm suspension assembly comprises: a trailing arm mounting flange, a trailing arm, a sealing mechanism, a locking mechanism, a rubber limiter, a wheel hub motor, a motor cover, a spring pin shaft, and fasteners; The longitudinal arm is screwed to the wheel hub motor, and is connected to the longitudinal arm mounting flange through a sealing mechanism and a locking mechanism, and realizes rotation around the mounting axis; the rubber limiter and the motor cover are screwed to the longitudinal arm.

6. The novel trailing arm suspension assembly as claimed in claim 5, characterized in that: The housing of the wheel hub motor is integrated with the trailing arm suspension assembly to form a trailing arm motor housing; The motor housing of the trailing arm adopts a hollow structure design, and the connector and high and low voltage cable harnesses are arranged inside the hollow cavity of the trailing arm; The trailing arm suspension assembly enables quick unlocking / plugging / replacing of mechanical structures and high and low voltage cable harnesses; The trailing arm suspension assembly uses a sealing mechanism to achieve a waterproof function of the trailing arm suspension assembly; The trailing arm suspension assembly uses a locking mechanism to achieve axial limitation of the trailing arm suspension assembly.

7. The novel trailing arm suspension assembly as claimed in claim 6, characterized in that: The longitudinal arm suspension assembly includes a sealing structure consisting of a longitudinal arm, a lip seal ring, a spacer, and an O-ring to achieve a waterproof function of the longitudinal arm suspension assembly.

8. The novel trailing arm suspension assembly as claimed in claim 7, characterized in that: The locking mechanism composed of the longitudinal arm, locking nut and locking washer ensures that the longitudinal arm drives the inner ring of the bearing to rotate and limits the axial clearance between the longitudinal arm and the bearing.

9. A new type of trailing arm suspension assembly, characterized in that: The novel trailing arm suspension assembly realizes the integrated design of the trailing arm suspension assembly and the wheel hub drive motor.

10. The novel trailing arm suspension assembly as claimed in claim 9, characterized in that: The novel trailing arm suspension assembly includes a wheel hub drive motor, a built-in electrical cable, a high-power through-cabin connector, and a trailing arm suspension mechanism; The wheel hub drive motor is screwed to one end of the trailing arm suspension assembly, the built-in electrical cable passes through the inner cavity of the trailing arm through a high-power through-cabin connector and is connected to an interface on the vehicle body, and the trailing arm suspension mechanism is connected to the vehicle body attachment seat through a bearing group; The function / structure of the trailing arm suspension mechanism and the wheel hub drive motor are integrated; The unified interface definition and type of the trailing arm suspension assembly integrated with the trailing arm suspension mechanism and the wheel hub drive motor in the front, rear, left and right directions of the whole vehicle is realized; the integrated module is universal for the whole vehicle and can be quickly unlocked / plugged / replaced.

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