Suspension device and vehicle

Abstract

The application discloses a suspension device and a vehicle. The suspension device comprises a suspension body and a support structure; the support structure is flexibly connected to the suspension body; the support structure is configured to support the device to be damped and flexibly connected to the device to be damped, so that the suspension device can be isolated from the device to be damped. The suspension device provided by the application can be flexibly connected to the device to be damped, and isolation between the suspension device and the device to be damped is realized. When the suspension device is applied to the vehicle, the vibration of the electric drive axle transmitted to the vehicle frame through the suspension device is reduced, and the isolation effect of the suspension structure between the electric drive axle and the vehicle frame is improved.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and more specifically, to a suspension device and a vehicle. Background Technology

[0002] The noise level and vibration sensation inside a vehicle are important indicators of vehicle comfort. As a drive device that propels the vehicle's tires, the vibration of the electric drive axle is usually transmitted to the vehicle interior through the frame, affecting the driving or riding experience.

[0003] To improve the comfort of the vehicle interior, suspension devices are usually used to reduce the vibration transmission between the electric drive axle and the chassis support. However, since the vibration transmitted from the electric drive axle to the suspension structure comes from multiple different directions, and the existing suspension devices can only isolate vibrations transmitted to the chassis in a specific direction, the vibration isolation effect of the suspension devices between the electric drive axle and the chassis is limited. Summary of the Invention

[0004] One objective of this application is to provide a new technical solution for a suspension device and a vehicle.

[0005] According to a first aspect of this application, a suspension device is provided for damping the vibration of a device to be damped, comprising:

[0006] Suspension main body;

[0007] A support structure is flexibly connected to the suspension body; the support structure is configured to support the device to be damped and to form a flexible connection with the device to be damped, so that the suspension device can achieve vibration isolation with the device to be damped.

[0008] Optionally, the support structure includes a flexible bracket, which is connected to the suspension body via the flexible bracket, and the flexible bracket can form a flexible connection with the device to be damped.

[0009] Optionally, the flexible support includes a bushing, a first bushing disposed above the bushing, and a second bushing disposed below the bushing;

[0010] The first bushing and the second bushing are fixed to the suspension body by a first fastener.

[0011] Optionally, the width of the first bushing and the second bushing is smaller than the width of the bushing.

[0012] Optionally, the first bushing and the second bushing are respectively provided with a first through hole along the first direction, and the bushing is provided with a second through hole along the second direction, wherein the first direction and the second direction are perpendicular to each other.

[0013] Optionally, the support structure further includes a rigid bracket, which is mounted on the flexible bracket;

[0014] The rigid support is configured to suspend and fix the device to be damped, so that the flexible support can form a flexible connection with the device to be damped.

[0015] Optionally, the flexible support further includes a thrust pad and a retaining ring;

[0016] The thrust pad is fastened to the outside of the rigid bracket by a second fastener to clamp the support structure in a first direction;

[0017] The retaining ring is sleeved on the rigid support and sandwiched between the bushing and the rigid support to reduce the stress on the rigid support.

[0018] Optionally, two support structures are provided, and the two support structures are arranged sequentially along the first direction to jointly support the vibration damping device.

[0019] Optionally, the support structure further includes an upper pad, a lower pad, and a positioning plate. The upper pad is located above the support structure, the lower pad is located below the support structure, and the positioning plate is located below the suspension body, and the positioning plate is fixedly connected to the suspension body.

[0020] The first fastener passes through the upper pad, the lower pad, and the positioning plate simultaneously, fixing the support structure to the suspension body.

[0021] Optionally, it also includes a thrust rod extending in the second direction and air springs and dampers respectively arranged in the third direction;

[0022] Wherein, the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first and second directions;

[0023] One end of the thrust rod is connected to the upper end of the support structure, and the air spring and the shock absorber are both fixed to the suspension body.

[0024] Optionally, the suspension body includes two guide arms extending along a first direction, and two support structures are provided, with the two support structures respectively fixed on the two guide arms;

[0025] The suspension body also includes a front torsion beam and a rear torsion beam. The two ends of the front torsion beam are connected along the second direction to the positions where the support structures are provided on the two guide arms. The two ends of the rear torsion beam are connected along the second direction to the rear ends of the two guide arms.

[0026] According to a second aspect of this application, a vehicle is provided, comprising: a frame, an electric drive axle, and the suspension device described in the first aspect, wherein the electric drive axle is connected to the frame via the suspension device.

[0027] According to one embodiment of this application, by providing a support structure on the suspension body that can be flexibly connected to both the suspension body and the device to be damped, the support structure can isolate vibrations from different directions transmitted to the suspension device during the operation of the device to be damped, thereby achieving vibration isolation between the suspension device and the device to be damped and improving the vibration isolation effect of the suspension structure for the device to be damped.

[0028] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0030] Figure 1 This is a structural schematic diagram of a suspension device provided in this application.

[0031] Figure 2 yes Figure 1 Top view.

[0032] Figure 3 yes Figure 1 Side view.

[0033] Figure 4 This is a schematic diagram of a support structure provided in this application.

[0034] Figure 5 yes Figure 4 Top view.

[0035] Figure 6 yes Figure 5 A sectional view.

[0036] Figure 7 This is a schematic diagram of the assembly of a suspension device and an electric drive bridge provided in this application.

[0037] Figure 8 yes Figure 7 Side sectional view.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Guide arm; 11. Guide arm seat; 2. Front torsion beam; 3. Rear torsion beam; 4. Support structure; 41. Flexible bracket; 411. Bushing; 412. First bushing; 413. Second bushing; 414. Thrust pad; 415. Retaining ring; 416. First through hole; 417. Second through hole; 42. Rigid bracket; 421. Suspension frame; 43. First fastener; 44. Second fastener; 45. Upper pad; 46. Lower pad; 47. Positioning plate; 48. Positioning pin; 5. Thrust rod; 51. Thrust rod seat; 6. Air spring; 7. Vibration damper; 20. Electric drive axle. Detailed Implementation

[0040] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0041] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0042] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0043] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0045] like Figures 1 to 8 As shown, this application provides a suspension device for vibration damping of a device to be damped, comprising: a suspension body and a support structure 4; the support structure 4 is flexibly connected to the suspension body; the support structure 4 is configured to support the device to be damped and to form a flexible connection with the device to be damped, so that the suspension device can achieve vibration isolation between itself and the device to be damped.

[0046] Specifically, the suspension device can be used to dampen the device to be damped, so as to prevent external vibrations from being directly transmitted to the device and causing vibration or noise. For example, in one embodiment, the suspension device can be used for vibration damping between the vehicle frame and the electric drive axle 20. The two ends of the electric drive axle 20 are usually used to connect the two drive wheels of the vehicle to drive the vehicle. In practical applications, the electric drive axle 20 can be fixed to the vehicle frame by the suspension device, and the suspension device can isolate or attenuate the vibration transmitted from the electric drive axle 20 to the vehicle frame, thereby improving the comfort of the vehicle.

[0047] In this embodiment, the suspension device has a suspension body and a support structure 4 flexibly connected to the suspension body. The support structure 4 can support the device to be damped and also forms a flexible connection with the device, so that the device to be damped can achieve vibration isolation between the support structure 4 and the suspension body. For example, when applied to vibration isolation between the electric drive axle 20 and the vehicle frame, the suspension body forms a flexible connection with the electric drive axle 20 through the support structure 4, so that the electric drive axle 20 achieves vibration isolation between the support structure 4 and the suspension body during operation. After the vibration transmitted from the electric drive axle 20 to the suspension body is reduced, the vibration is further reduced by the suspension device. Therefore, the vibration reduction effect of the suspension device between the electric drive axle 20 and the vehicle frame is better than the vibration reduction effect of the suspension device directly and rigidly connected to the electric drive axle 20 in the prior art. Electric drive bridge 20 support structure 4 guide arm 1 guide arm 1 support structure 4 electric drive bridge 20 support structure 4 rigid bracket 42 flexible bracket 41 rigid bracket 42 flexible bracket 41 flexible bracket 41 guide arm 1 rigid bracket 42 electric drive bridge 20 flexible bracket 41 rigid bracket 42 electric drive bridge 20

[0048] In the above structure, after the flexible bracket 41, rigid bracket 42, and support structure 4 are assembled with the electric drive axle 20, the vibrations generated by the electric drive axle 20 in all directions can be isolated, and the vibrations transmitted to the suspension body are attenuated. Then, in combination with other shock absorbers 7 (such as shock absorbers 7, air springs 6, etc.) of the suspension device, the remaining vibrations are damped. Overall, the vibration isolation effect of the suspension device between the electric drive axle 20 and the frame is improved, and the vehicle comfort is improved (the following uses the electric drive axle 20 as an example for the shock absorber).

[0049] Optionally, such as Figures 4 to 6 As shown, the support structure 4 includes a flexible bracket 41, which is connected to the suspension body via the flexible bracket 41, and the flexible bracket 41 can form a flexible connection with the device to be damped.

[0050] Specifically, in this embodiment, the flexible support 41 can be made of vibration-damping material, such as rubber, which can have certain damping properties to provide a certain axial stiffness to the flexible support 41. This allows the flexible support 41 to both support and fix the vibration damping device of the electric drive bridge 20, and absorb the vibration transmitted by the vibration damping device from the rigid support 42 of the electric drive bridge 20. Rigid support 42, electric drive bridge 20 support structure 4, electric drive bridge 20

[0051] Optionally, refer to Figures 4 to 6 The flexible support 41 includes a bushing 411, a first bushing 412 disposed above the bushing 411, and a second bushing 413 disposed below the bushing 411; the bushing 411 rigid support 42 support structure 4, the first bushing 412 and the second bushing 413 fix the bushing 411 to the suspension body of the guide arm 1 by a first fastener 43.

[0052] Specifically, in this embodiment, the rigid bracket 42 of the bushing 411 support structure 4 enables the connection between the rigid bracket 42 support structure 4 and the flexible bracket 41 of the device to be damped. It can be directly mounted on the device to be damped, or it can be sleeved on a rigid bracket 42, achieving a flexible connection between the rigid bracket 42 and the device to be damped. In one embodiment, the bushing 411 can be sleeved on a rigid bracket 42, making the connection between the rigid bracket 42 and the flexible component more reliable in practical applications. The structure of the bushing 411 can be adapted to the structure of the rigid bracket 42; the rigid bracket 42 can be partially or fully sleeved within the bushing 411. When the rigid bracket 42 is fully sleeved within the bushing 411, the rigid bracket 42 can be designed as a cylindrical structure, and the electric drive axle 20 (the device to be damped) can pass through the cylindrical rigid bracket 42 and be assembled with the vehicle's tires.

[0053] Furthermore, the arrangement of the first bushing 412 and the second bushing 413 makes the assembly of the bushing 411 with the suspension body of the guide arm 1 easier. In one embodiment, a first fastener 43 can pass through both the first bushing 412 and the second bushing 413 simultaneously, allowing the bushing 411 to be fixed to the suspension body of the guide arm 1. The first bushing 412, the bushing 411, and the second bushing 413 can all be made of the same material, such as rubber, to improve the load-bearing capacity of the flexible support 41. In the actual operation of the electric drive axle 20 (the vibration damping device), the bushing 411 can withstand the torsional force, radial force, and axial force generated by the vibration of the electric drive axle 20 through radial and axial compression or tension deformation. This not only attenuates the vibration transmitted from the road surface to the vehicle frame but also effectively isolates the high-frequency vibration generated by the electric drive axle 20 in the X, Y, and Z directions.

[0054] Optionally, such as Figure 6 As shown, the width of the first bushing 412 and the second bushing 413 is smaller than the width of the flexible bracket 41, making assembly more convenient when the bushing 411 is fixed to the suspension body by the first bushing 412 and the second bushing 413.

[0055] Optionally, refer to Figure 6 The first bushing 412 and the second bushing 413 are respectively located along the first direction (reference). Figure 1 A first through hole 416 is provided in the X direction (in the middle), and the bushing 411 is provided in the second direction (refer to the X direction). Figure 1 A second through hole 417 is provided on the Y direction of the first direction, and the second direction is perpendicular to each other.

[0056] Specifically, in this embodiment, by providing first through holes 416 on the first bushing 412 and the second bushing 413 respectively, and by providing second through holes 417 on the bushing 411, the entire flexible support 41 can achieve a weight reduction effect while ensuring its rigidity.

[0057] Optionally, refer to Figures 4 to 6 The support structure 4 further includes a rigid bracket 42, which is mounted on the flexible bracket 41. The rigid bracket 42 is configured to suspend and fix the device to be damped, so that the flexible bracket 41 can form a flexible connection with the device to be damped.

[0058] Specifically, in this embodiment, the rigid bracket 42 is mounted on the flexible bracket 41 to support the device to be damped, and allows the device to be damped to form a flexible connection with the flexible bracket 41 through the rigid bracket 42, thereby achieving vibration isolation between the suspension device and the device to be damped. The rigid bracket 42 enables the entire support structure 4 to form a flexible connection with both the suspension body and the device to be damped through the flexible bracket 41, thus improving the damping effect. Furthermore, it allows the device to be damped to be fixed to the entire support structure 4 through the rigid bracket 42, improving the reliability of the assembly between the device to be damped and the suspension device, and further enhancing the overall damping effect of the suspension device.

[0059] Optionally, refer to Figures 4 to 6 The flexible support 41 further includes a thrust pad 414 and a retaining ring 415; the thrust pad 414 is fastened to the outside of the rigid support 42 by a second fastener 44 to clamp the support structure 4 in a first direction; the retaining ring 415 is sleeved on the rigid support 42 and clamped between the bushing 411 and the rigid support 42 to reduce the stress on the rigid support 42.

[0060] Specifically, taking the electric drive bridge 20 as an example, in practical applications, most of the vibration of the electric drive bridge 20 is absorbed and attenuated by the bushing 411, making the bushing 411 easy to move back and forth relative to the rigid structure. A thrust pad 414 is provided on the outside of the rigid support 42 and fixed to the rigid structure by a second fastener 44. The two bushings 411 can be fixed in position in the first direction, preventing them from moving on the rigid support 42 and improving the stability of the support structure 4. Furthermore, a retaining ring 415 is fitted on the rigid support 42, which can reduce stress concentration on the rigid support 42, avoiding the risk of breakage caused by stress concentration when the rigid support 42 supports the electric drive bridge 20, and improving the support reliability of the rigid support 42 and even the entire suspension device.

[0061] Optionally, refer to Figures 1 to 3 There are two support structures 4, which are arranged sequentially along the first direction to jointly support the vibration damping device.

[0062] Specifically, in practical applications, in order to improve the stability of the suspension device's support for the electric drive axle 20 to be damped, two support structures 4 can be sequentially set on the main body of the guide arm 1 suspension. The rigid brackets 42 of the support structures 4 together form a support for the electric drive axle 20 to be damped, making the support of the suspension device for the electric drive axle 20 to be damped more stable and reliable.

[0063] Optionally, refer to Figures 4 to 6 The first end of the rigid bracket 42 is sleeved in the bushing 411, and the second end extends out of the bushing 411; the second ends of the two rigid brackets 42 form a suspension frame 421, which can suspend and fix the electric drive bridge 20.

[0064] Specifically, the first end of the rigid bracket 42 is sleeved in the bushing 411 and connected to the flexible bracket 41 to achieve a soft connection between the electric drive bridge 20 and the suspension body. The suspension frame 421 formed by the two rigid brackets 42 of the two support structures 4 facilitates the fixed installation of the electric drive bridge 20 and the rigid structure.

[0065] Optionally, refer to Figures 4 to 6 The support structure 4 further includes an upper pad 45, a lower pad 46, and a positioning plate 47. The upper pad 45 is located above the support structure 4, the lower pad 46 is located below the support structure 4, and the positioning plate 47 is located below the suspension body and is fixedly connected to the suspension body. The first fastener 43 passes through the upper pad 45, the lower pad 46, and the positioning plate 47 simultaneously, thereby fixing the support structure 4 to the suspension body.

[0066] Specifically, in this embodiment, the first fastener 43 passes through the upper pad 45, the first bushing 412, the second bushing 413, the lower pad 46, and the positioning plate 47 sequentially from top to bottom, improving the integrity and stability of the support structure 4. The upper pad 45 and the lower pad 46 ensure a more stable assembly between the flexible bracket 41 and the first fastener 43, preventing separation and swaying during vibration. Furthermore, the positioning plate 47 can be connected to the suspension body of the guide arm 1 via a positioning pin 48 or similar structure, which improves the structural stability of the suspension device.

[0067] Optionally, refer to Figures 1 to 3 It also includes a thrust rod 5 extending along the second direction and thrust rods extending along the third direction (see reference). Figure 1 An air spring 6 and a shock absorber 7 are provided in the Z direction; wherein, the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first and second directions; one end of the thrust rod 5 is connected to the upper end of the support structure 4, and both the air spring 6 and the shock absorber 7 are fixed to the suspension body.

[0068] Specifically, in this embodiment, the vibration damping device takes the electric drive axle 20 as an example. The thrust rod 5 is arranged along the second direction, and one end can be connected to the upper end of the flexible bracket 41 through the thrust rod 5 seat, and the other end is connected to the vehicle frame. The guide arm 1 is used to bear the lateral force, so that the vibration generated by the electric drive axle 20 in the second direction is attenuated by the flexible bracket 41 and further attenuated by the thrust rod 5. At the same time, the rotation of the suspension device in the first direction is controlled, which improves the vibration isolation effect of the suspension device on the vehicle frame in the second direction.

[0069] Furthermore, the air spring 6 and the shock absorber 7 are configured to withstand vertical forces respectively, so that the vibration generated by the electric drive axle 20 in the third direction is attenuated by the flexible bracket 41 and further attenuated by the air spring 6 and the shock absorber 7, thereby improving the vibration isolation effect of the suspension device on the frame in the third direction.

[0070] Optionally, refer to Figures 1 to 3 The suspension body includes two guide arms 1 extending along a first direction, and two support structures 4 are provided, with the two support structures 4 respectively fixed on the two guide arms 1; the suspension body also includes a front torsion beam 2 and a rear torsion beam 3, the two ends of the front torsion beam 2 are connected along a second direction to the positions of the two guide arms 1 where the support structures 4 are provided, and the two ends of the rear torsion beam 3 are connected along the second direction to the rear ends of the two guide arms 1.

[0071] Specifically, in practical applications, the electric drive axle 20 is typically a coaxial electric drive axle 20. Two guide arms 1 are usually provided in the suspension system, one on the left and one on the right. Each guide arm 1 is equipped with a support structure 4 to support both ends of the electric drive axle 20, thus achieving suspension of the electric drive axle 20. The number of support structures 4 on each guide arm 1 can be set according to actual needs, usually two, to improve the stability of the support for the electric drive axle 20. The front torsion beam 2 and rear torsion beam 3, located at the front and rear ends of the other two guide arms 1, can respectively withstand the torsional force exerted by the electric drive axle 20 on the suspension system, effectively controlling the third-direction rotational movement of the suspension system and the individual movement of the left and right guide arms 1, improving the stability of the suspension body, and effectively controlling the movement trajectory of the wheels mounted at both ends of the electric drive axle 20. The front end of the guide arm 1 can be connected to the vehicle frame through a guide arm seat 11.

[0072] In one embodiment, the two ends of the front torsion beam 2 are fixedly connected to positioning plates 47 located below the two guide arms 1, so that abnormal vibration and resonance phenomena inside the vehicle in the first and second directions can be improved.

[0073] According to the second aspect of this application, reference to Figures 7 to 8 A vehicle is provided, comprising: a frame, an electric drive axle 20, and the suspension device described in the first aspect, wherein the electric drive axle 20 is connected to the frame via the suspension device.

[0074] Specifically, in this application, the electric drive axle 20 is mounted on the suspension device provided in the first aspect and connected to the vehicle frame through the suspension device, so that the suspension device can attenuate the vibrations transmitted from the electric drive axle 20 and the road surface to the vehicle frame. Since the flexible bracket 41 and rigid bracket 42 of the suspension device provided in this application can form a flexible connection with the electric drive axle 20, the flexible bracket 41 enables the support structure 4 to attenuate the vibrations generated from the road surface and the electric drive axle 20 simultaneously in the first direction, the second direction, and the third direction, while also being able to withstand torsional forces in all directions, thus significantly reducing the vibrations transmitted to the vehicle frame and improving vehicle comfort.

[0075] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0076] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A suspension device for damping a device to be damped, characterized in that The suspension device comprises: a suspension body; a support structure, the support structure comprising a flexible support and a rigid support, the support structure being connected to the suspension body through the flexible support, the rigid support being assembled on the flexible support; the rigid support is configured to be able to suspend and fix a support device to be damped, so that the flexible support can be flexibly connected with the device to be damped, and isolation between the suspension device and the device to be damped can be achieved.

2. The suspension device of claim 1, wherein the flexible support comprises a bushing, a first support pad arranged above the bushing, and a second support pad arranged below the bushing; the first support pad and the second support pad fix the bushing to the suspension body through a first fastener.

3. The suspension device of claim 2, wherein the width of the first support pad and the second support pad is smaller than the width of the bushing.

4. Suspension device according to claim 2 or 3, characterized in that the first support pad and the second support pad are respectively provided with a first through hole in a first direction, and the bushing is provided with a second through hole in a second direction, the first direction being perpendicular to the second direction.

5. The suspension device of claim 2, wherein the flexible support further comprises a thrust pad and a check ring; the thrust pad is fastened on the outside of the rigid support through a second fastener to clamp the support structure in the first direction; the check ring is sleeved on the rigid support and clamped between the bushing and the rigid support to reduce the stress on the rigid support.

6. The suspension device of claim 1, wherein the support structure is provided with two, and the two support structures are arranged in sequence in the first direction to support the device to be damped together.

7. The suspension device of claim 1, wherein the support structure further comprises an upper pad, a lower pad, and a positioning plate, the upper pad being arranged above the support structure, the lower pad being arranged below the support structure, and the positioning plate being arranged below the suspension body and fixedly connected with the suspension body; the first fastener simultaneously penetrates through the upper pad, the lower pad, and the positioning plate, so that the support structure is fixed to the suspension body.

8. The suspension device of claim 1, wherein the suspension device further comprises a thrust rod extending in a second direction, and an air spring and a damper respectively arranged in a third direction; the second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction and the second direction; one end of the thrust rod is connected to the upper end of the support structure, and the air spring and the damper are fixed to the suspension body.

9. The suspension device of claim 1, wherein the suspension body comprises two guide arms respectively extending in the first direction, and the support structure is provided with two, and the two support structures are respectively fixed to the two guide arms; the suspension body further comprises a front torsion beam and a rear torsion beam, two ends of the front torsion beam being connected to the positions of the two guide arms provided with the support structure in the second direction, and two ends of the rear torsion beam being connected to the rear ends of the two guide arms in the second direction.

10. A vehicle characterized by comprising: The suspension device comprises: a frame, an electric drive axle, and the suspension device according to any one of claims 1-9, the electric drive axle being connected to the frame through the suspension device.

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