Suspension device and vehicle

Abstract

The utility model relates to a suspension device and a vehicle. The suspension device comprises a shock absorber, a lifting assembly, a driving part, a transmission assembly and an adjusting assembly. The damper is provided with a damping connecting rod; the lifting assembly is used for changing the position of the shock absorber through displacement relative to the vehicle body; the driving part comprises a driving spindle; the transmission assembly is arranged between the lifting assembly and the driving part; the adjusting assembly is used for adjusting the distance between the driving piece and the lifting assembly in the first direction different from the axial direction of the driving main shaft. According to the technical scheme, the transmission assembly is used for reducing the probability that external impact directly acts on the driving piece, the adjusting assembly can adjust the distance between the transmission assembly and the driving piece in the assembling and using process, the relative positions of parts of the suspension device can be flexibly configured according to the actual size deviation and other conditions of the parts, and the reliability of the suspension device is improved. And equivalently, the requirements on the assembly precision during assembly and use are reduced, so that the suspension device provided by the utility model improves the use stability, and meanwhile, the requirements on the assembly precision are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle suspensions, and particularly to a suspension device and a vehicle. Background Art

[0002] An active suspension is a device used on a vehicle to buffer external impacts. It drives some intermediate parts (such as a lead screw, etc.) through a driving part such as a motor, and drives the piston rod to move in such a way that the stiffness and damping characteristics of the suspension can be adjusted adaptively according to the vehicle's motion state, road conditions, etc., so that the suspension is in a better shock-absorbing state. In related technologies, the driving part, intermediate parts such as lead screws, and the piston rod are generally assembled in a fixed connection manner. When the piston rod bears external impacts, the driving part will directly bear the impact, which easily causes damage to the driving part. Some suspension devices are provided with a transmission mechanism between the driving part and the intermediate part to reduce the possibility of the impact force directly acting on the driving part. High assembly accuracy is often required between the driving part, the transmission mechanism, intermediate parts such as lead screws, and the piston rod. For example, the coaxiality requirements of the motor shaft, lead screw, and piston rod are high in order to enable the active suspension to work more stably. Utility Model Content

[0003] Embodiments of the present application provide a suspension device and a vehicle, which improve the working stability of the suspension device while reducing the requirements for assembly accuracy to at least partially solve the above technical problems.

[0004] To achieve the above object, according to the first aspect of the present application, a suspension device is provided, including:

[0005] A shock absorber having a shock link;

[0006] A lifting assembly connected to the shock link for changing the position of the shock link by shifting relative to the vehicle body;

[0007] A driving part having a driving main shaft for driving the lifting assembly to displace relative to the vehicle body;

[0008] A transmission assembly disposed between the lifting assembly and the driving part to transmit the acting force provided by the driving part to cause the lifting assembly to displace relative to the vehicle body;

[0009] An adjusting assembly connected to the driving part for adjusting the distance between the driving part and the lifting assembly in a first direction different from the axial direction of the driving main shaft, so as to adjust the connection positions between the transmission assembly, the driving part, and the lifting assembly.

[0010] Optionally, the adjusting assembly includes:

[0011] An adjusting bracket connected to the driving part;

[0012] The adjusting member is mechanically connected to the adjusting bracket and is used to drive the adjusting bracket to move relative to the lifting assembly so as to adjust the relative position between the driving member and the lifting assembly.

[0013] Optionally, the suspension device further includes:

[0014] A housing configured to form a receiving cavity for receiving the driving member;

[0015] Wherein, the adjusting bracket is located within the receiving cavity.

[0016] Optionally, one of the adjusting bracket and the housing includes:

[0017] A limiting portion that cooperates with the other of the adjusting bracket and the housing to limit the moving direction of the adjusting bracket relative to the housing;

[0018] The other of the adjusting bracket and the housing is provided with:

[0019] A limiting sliding groove for the limiting portion to be inserted into and form a sliding connection with the limiting portion to limit the sliding direction of the adjusting bracket relative to the housing.

[0020] Optionally, the adjusting assembly further includes:

[0021] A cooperating member for mechanically connecting with the adjusting member to drive the adjusting member to move relative to the housing;

[0022] The adjusting member is provided with:

[0023] A threaded portion that forms a threaded connection with the cooperating member.

[0024] Optionally, the adjusting bracket further includes:

[0025] A first connecting portion fixedly connected to the driving member;

[0026] A second connecting portion fixedly connected / integrally formed between the adjusting member and the first connecting portion;

[0027] Wherein, the limiting portion / limiting sliding groove on the adjusting bracket is arranged on the first connecting portion; the second connecting portion is arranged at one end of the adjusting member away from the cooperating member.

[0028] Optionally, the lifting assembly includes:

[0029] A driven member that is in transmission connection with the transmission assembly;

[0030] Among them, the force transmission direction between the transmission component and the driven component is set differently from the position change direction of the shock-absorbing link.

[0031] Optionally, at least a part of the driven component is configured as a rotating body structure formed by rotating around a first straight line; one of the shock-absorbing link and the driving main shaft is coaxially arranged with the rotating body structure.

[0032] Optionally, the lifting component further includes:

[0033] A connecting piece, connected to the shock-absorbing link to change the position of the shock-absorbing link when shifting relative to the vehicle body;

[0034] Among them, the connecting piece and the driven component form a transmission connection to shift relative to the vehicle body under the drive of the driven component.

[0035] Optionally, one of the connecting piece and the driven component is configured as a lifting lead screw; the other of the connecting piece and the driven component is configured as a lead screw nut connected to the lifting lead screw.

[0036] Optionally, the transmission component includes:

[0037] A driving piece, connected to the driving main shaft to move under the drive of the driving main shaft;

[0038] A driven piece, connected to the lifting component to drive the lifting component to shift relative to the vehicle body when moving;

[0039] Among them, the driving piece and the driven piece form a transmission connection.

[0040] Optionally, the driving component drives the lifting component to shift relative to the vehicle body in the form of belt transmission / chain transmission.

[0041] Optionally, the driving component is configured as a motor; the driving main shaft is configured as a solid shaft.

[0042] Optionally, the suspension device further includes:

[0043] A buffer device, having a buffer member;

[0044] Among them, the buffer member is arranged between the shock-absorbing link and the lifting component to buffer the force transmitted from the shock-absorbing link to the lifting component.

[0045] Optionally, a buffer cavity is provided inside the buffer device; the buffer member is accommodated in the buffer cavity.

[0046] Optionally, the buffer device includes:

[0047] The first buffer mounting member is fixedly connected to the lifting assembly;

[0048] The second buffer mounting member is fixedly connected to the second buffer mounting member;

[0049] Wherein, the buffer cavity is formed between the first buffer mounting member and the second buffer mounting member, so that the inner walls of the first buffer mounting member and the second buffer mounting member forming the buffer cavity limit the buffer member.

[0050] Optionally, at least a part of the shock-absorbing link is inserted into the buffer cavity and contacts the buffer member.

[0051] Optionally, a perforation communicating with the buffer cavity is provided on the second buffer mounting member; the shock-absorbing link is inserted into the buffer cavity from the perforation, and the shock-absorbing link and the second buffer mounting member form a sliding connection along a first straight line direction.

[0052] Optionally, the buffer member includes a gas medium; the gas medium is arranged in the buffer cavity.

[0053] Optionally, the buffer member includes a buffer pad made of a soft material, or,

[0054] The buffer member includes a buffer spring.

[0055] Optionally, the shock absorber includes:

[0056] A cylinder body, adapted to be connected to a wheel and slidably cooperate with the shock-absorbing link;

[0057] Wherein, at least a part of the shock-absorbing link is inserted into the accommodation cavity, and the other part passes through the accommodation cavity and forms a physical connection with the cylinder body.

[0058] Optionally, the suspension device further includes:

[0059] A first type of elastic member, arranged in the accommodation cavity, one end of the first type of elastic member abuts against the buffer device, and the other end abuts against the cylinder body.

[0060] Optionally, the elastic reset member further includes:

[0061] A second type of elastic member, arranged between the housing and the cylinder body;

[0062] A bracket, fixedly connected to the outside of the cylinder body;

[0063] Wherein, the second type of elastic member is located outside the accommodation cavity, one end of the second type of elastic member abuts against the housing, and the other end abuts against the bracket.

[0064] According to a second aspect of the present application, a vehicle is provided, including the suspension device as described above.

[0065] In the suspension device of the embodiment of the present application, through the transmission cooperation provided by setting the transmission component, the impact force is weakened between the lifting component and the driving member, avoiding the strong impact acting on the driving member, and effectively improving the working stability of the suspension device. On this basis, the provided adjusting component can adjust the distance between the transmission component and the driving member during assembly and use, so as to flexibly configure the relative positions between the components of the suspension device according to the actual dimensional deviations of the components, which is equivalent to reducing the requirements for assembly accuracy during assembly and use. Thus, the suspension device provided by the present application improves the use stability while reducing the requirements for assembly accuracy.

[0066] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings without creative efforts based on these drawings.

[0068] In order to more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0069] Figure 1 is a schematic diagram of the overall structure of the suspension device provided in the exemplary embodiment of the present application;

[0070] Figure 2 is a cross-sectional view of a suspension device provided in the exemplary embodiment of the present application from a first perspective;

[0071] Figure 3 is Figure 2 a schematic diagram of the structure of the suspension device shown near the driving main shaft;

[0072] Figure 4 is a cross-sectional view of another suspension device provided in the exemplary embodiment of the present application;

[0073] Figure 5 is Figure 4 a schematic diagram of the structure of the adjusting mechanism in the suspension device shown;

[0074] Figure 6 is a schematic diagram of the first embodiment of the buffer device in the suspension device provided in the exemplary embodiment of the present application;

[0075] Figure 7 It is a schematic diagram of the second embodiment of the buffer device in the suspension device provided in the exemplary embodiment of the present application;

[0076] Figure 8 It is a schematic diagram of the third embodiment of the buffer device in the suspension device provided in the exemplary embodiment of the present application;

[0077] Figure 9 It is a schematic diagram of the fourth embodiment of the buffer device in the suspension device provided in the exemplary embodiment of the present application;

[0078] Figure 10 is Figure 2 A cross-sectional view of the shown suspension device from a second perspective;

[0079] Figure 11 It is a schematic diagram of the structure of the vehicle provided in the exemplary embodiment of the present application.

[0080] Description of reference numerals:

[0081] 10, vehicle;

[0082] 100, suspension device;

[0083] 110, shock absorber; 111, shock link; 111a, second contact member; 112, cylinder block; 113, first type of elastic member; 114, second type of elastic member;

[0084] 120, lifting assembly; 120a, first contact member; 121, lifting lead screw; 122, lead screw nut;

[0085] 130, driving member; 131, driving main shaft; 132, rotor; 133, stator; 134, housing;

[0086] 140, transmission assembly; 141, driving pulley; 142, driven pulley; 143, transmission belt; 144, first locking ring; 145, second locking ring; 146, third bearing;

[0087] 150, adjustment assembly; 151, adjustment bracket; 151a, limiting portion; 151b, first connecting portion; 151c, second connecting portion; 152, screw; 152a, threaded portion; 153, adjustment nut;

[0088] 160, buffer device; 160a, buffer cavity; 160b, airbag; 160c, sliding fit portion; 161, buffer gasket; 161a, first buffer pad; 161b, second buffer pad; 162, buffer spring; 163, first buffer mounting member; 164, second buffer mounting member; 164a, perforation;

[0089] 170. Housing; 170a. Accommodation cavity; 170b. Sliding limit part; 170c. Limit sliding groove; 171. Fixing part; 172. First bearing; 173. Second bearing;

[0090] 180. Bracket. Detailed implementation manners

[0091] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0092] Please refer to Figures 1 to 10 , according to the first aspect of the present application, a suspension device 100 is provided, including: a shock absorber 110, a lifting assembly 120, a driving member 130, a transmission assembly 140, and an adjustment assembly 150.

[0093] Among them, referring to Figure 1 , Figure 2 and Figure 3 , the shock absorber 110 has a shock-absorbing link 111. The lifting assembly 120 is connected to the shock-absorbing link 111 and can be used as the direct power to drive the movement of the shock-absorbing link 111. It is used to change the position of the shock absorber 110 by its own displacement relative to the vehicle body after the suspension device 100 is integrated into the vehicle. In this way, by driving the movement of the shock-absorbing link 111, after the suspension device 100 is integrally installed on the vehicle, the purpose of adjusting the stiffness of the suspension device 100 is achieved through the movement of the shock-absorbing link 111. The present application does not involve substantial improvements in the content of how to adjust the stiffness of the suspension device 100 after the movement of the shock-absorbing link 111, and the principle of the shock absorber 110 cooperating with other components on the vehicle to adjust the stiffness of the suspension device 100 will not be elaborated.

[0094] The driving member 130 has a driving main shaft 131 for driving the lifting assembly 120 to displace relative to the vehicle body, that is, the driving member 130 can be used as the power source for driving the movement of the shock-absorbing link 111 and provides the acting force for the lifting assembly 120 to displace relative to the vehicle body.

[0095] In a specific solution, referring to Figure 4, the driving member 130 can be configured as a motor, for example. The driving main shaft 131 is connected to the rotor 132 of the motor, so that when the rotor 132 rotates due to the cooperation between the rotor 132 and the stator 133, torque is output externally, and thus a force that enables the shock-absorbing link 111 to move can be provided to the shock-absorbing link 111. The driving main shaft 131 can be configured as a solid shaft, so that the driving main shaft 131 can have sufficient structural strength to output torque externally.

[0096] Reference Figure 4 , the transmission assembly 140 is arranged between the lifting assembly 120 and the driving member 130 to transmit the force provided by the driving member 130 to make the lifting assembly 120 displace relative to the vehicle body. The transmission assembly 140 is used to transmit the force provided by the driving member 130. Eventually, this force can be transmitted from the lifting assembly 120 to the shock-absorbing link 111, so that the relative position of the shock-absorbing link 111 with respect to the vehicle body is changed. Due to the arrangement of the transmission assembly 140, the external impact force acting on the shock-absorbing link 111 does not directly act on the driving member 130, but at least a part of the impact force can be buffered by using the configured transmission assembly 140.

[0097] In Figures 1 to 3 Based on the example solution shown, with reference to Figure 4 , an adjustment assembly 150 is provided in the suspension device 100 provided in the present application. The adjustment assembly 150 is connected to the driving member 130 and is used to adjust the distance between the driving member 130 and the lifting assembly 120 in a first direction X2 that is different from the axial direction of the driving main shaft 131, so as to adjust the connection positions among the transmission assembly 140, the driving member 130, and the lifting assembly 120. The adjustment assembly 150 can adjust the interval between the driving member 130 and the lifting assembly 120, thereby avoiding the problem that it is difficult to meet the assembly accuracy requirements for the interval between the driving member 130 and the lifting assembly 120 due to reasons such as part size errors, and reducing the requirements for assembly accuracy.

[0098] With the above solution, through the transmission cooperation provided by setting the transmission assembly 140, the impact force is weakened between the lifting assembly 120 and the driving member 130, avoiding the strong impact on the driving member 130. On the basis of effectively improving the working stability of the suspension device 100, the provided adjustment assembly 150 can adjust the distance between the transmission assembly 140 and the driving member 130 during assembly and use, so as to flexibly configure the relative positions among the components of the suspension device 100 according to the actual dimensional deviations of the components, which is equivalent to reducing the requirements for assembly accuracy during assembly and use. In this way, the suspension device 100 provided in the present application reduces the requirements for assembly accuracy while improving the use stability.

[0099] In some embodiments, with reference to Figure 4 and Figure 5, the adjustment assembly includes: an adjustment bracket 151 and an adjustment member. Among them, the adjustment bracket 151 is connected to the driving member 130. In a specific solution, the adjustment bracket 151 is fixedly connected to the driving member 130 so that when the adjustment bracket 151 moves, it can drive the driving member 130 to move. The adjustment member is mechanically connected to the adjustment bracket 151 and is used to drive the adjustment bracket 151 to move relative to the lifting assembly 120 to adjust the relative position between the driving member 130 and the lifting assembly 120.

[0100] In a specific solution, referring to Figure 4 and Figure 5 , the motor is used to integrally install the housing 134 of the stator 133 and the rotor 132 and is fixedly connected to the adjustment bracket 151, and the adjustment member is fixedly connected to or integrally formed with the adjustment bracket 151, so that when the adjustment member moves, it can drive the adjustment bracket 151 to move, and then move the motor relative to the lifting assembly 120.

[0101] In some embodiments, referring to Figure 2 , the suspension device 100 further includes: a housing 170. Among them, the housing 170 is configured to form a receiving cavity 170a for receiving the driving member 130, and the adjustment bracket 151 is located in the receiving cavity 170a. In a specific solution, the housing 170 can also be used to integrate structures such as the lifting assembly 120, the driving member 130, the transmission assembly 140, and the shock absorber 110, and the lifting assembly 120 can also be arranged in the receiving cavity 170a, so as to use the wall thickness of the housing 170 to provide protection for the lifting assembly 120, the driving member 130, etc. That is, for the driving member 130 and the lifting assembly 120 that drive the shock-absorbing link 111 to slide, they are arranged inside the housing 170 to protect the lifting assembly 120 and the driving member 130. The adjustment bracket 151 can also be arranged in the receiving cavity 170a to reduce the possibility of the adjustment bracket 151 being damaged by being knocked by foreign objects outside the housing 170. The adjustment member is movably arranged relative to the housing 170, and when the adjustment member moves relative to the housing 170, it drives the driving member 130 to move relative to the housing 170.

[0102] In some embodiments, one of the adjustment bracket 151 and the housing 170 includes: a limiting portion 151a. The limiting portion 151a cooperates with the other of the adjustment bracket 151 and the housing 170 to limit the moving direction of the adjustment bracket 151 relative to the housing 170. The other of the adjustment bracket 151 and the housing 170 is provided with: a limiting sliding groove 170c. The limiting sliding groove 170c is for the limiting portion 151a to be inserted and form a sliding connection with the limiting portion 151a to limit the sliding direction of the adjustment bracket 151 relative to the housing 170. Referring to Figure 4 and Figure 5, which schematically shows an exemplary solution of providing a limiting portion 151a on the adjusting bracket 151 and a limiting sliding groove 170c on the housing 170. Through the cooperation of the limiting portion 151a and the limiting sliding groove 170c, the motor can move relative to the housing 170 smoothly.

[0103] As an option, the adjusting member can be, for example, a cylinder, a hydraulic cylinder, etc., which is arranged between the housing 170 and the adjusting bracket 151 to drive the motor to move by means of hydraulic drive, pneumatic drive, etc.

[0104] In some embodiments, the adjusting assembly 150 further includes: a cooperating member. The cooperating member is used to form a mechanical connection with the adjusting member to drive the adjusting member to move relative to the housing 170. The adjusting member is provided with: a threaded portion 152a, which forms a threaded connection with the cooperating member.

[0105] This application does not specifically limit the specific implementation manner of the adjusting member driving the motor to move. For example, referring to Figure 5 , the adjusting member is configured as a screw 152 connected to the adjusting bracket 151. One end of the screw 152 passes through the housing 170 and is exposed outside the accommodating cavity 170a. The threaded portion 152a is formed on the surface of the screw 152 and is at least partially exposed outside the accommodating cavity 170a. Correspondingly, the cooperating member can be configured as an adjusting nut 153 sleeved on the threaded portion 152a, and the adjusting nut 153 can be configured to contact the outer wall of the housing. At this time, by rotating the adjusting nut 153, the screw 152 can be driven to slide relative to the housing 170, and thus the distance between the motor and the lifting assembly 120 can be adjusted flexibly according to actual needs.

[0106] In some embodiments, the adjusting bracket 151 further includes: a first connecting portion 151b and a second connecting portion 151c. Among them, the first connecting portion 151b is fixedly connected to the driving member 130. The second connecting portion 151c is fixedly connected / integrally formed between the adjusting member and the first connecting portion 151b. The limiting portion / limiting sliding groove on the adjusting bracket 151 is provided on the first connecting portion 151b. The second connecting portion 151c is arranged at one end of the adjusting member away from the cooperating member.

[0107] Referring to Figure 5, in the specific implementation example shown in the figure, the driving main shaft 131 of the motor is rotatably connected to the first connecting portion 151b, the housing 134 of the motor is fixedly connected to the first connecting portion 151b, and the second connecting portion 151c is connected between the first connecting portion 151b and the screw 152. Thus, when the screw 152 moves, it can drive the whole motor to move. Considering that the driving main shaft 131 of the motor often extends out of the motor housing 134, the limiting portion 151a on the adjusting bracket 151 is arranged on the first connecting portion 151b, which is beneficial to configure the second connecting portion 151c to the part between the end where the driving main shaft 131 extends out of the motor housing 134 and the motor housing 134. When the screw 152 drives the motor to move, the motor is relatively not easy to tilt, and it is convenient to configure a limiting sliding groove 170c matching with the limiting portion 151a at the corresponding position in the spatial layout of the housing 170, so that the structure of the housing 170 cooperating with the adjusting assembly 150 is relatively simple and convenient for the assembly work.

[0108] In some embodiments, the lifting assembly 120 includes: a driven member. Wherein, the driven member is in transmission connection with the transmission assembly 140; the acting force transmission direction between the transmission assembly 140 and the driven member is set to be different from the position change direction of the shock-absorbing link 111. Considering that the force transmission direction is different from the actual displacement direction of the shock-absorbing link 111, the force transmission is less affected by the jitter of the shock-absorbing link 111 along the displacement direction during operation, which is beneficial to improving the transmission stability.

[0109] In some embodiments, at least a part of the driven member is configured as a rotating body structure formed by rotating around the first straight line L1; one of the shock-absorbing link 111 and the driving main shaft 131 is coaxially arranged with the rotating body structure. This configuration is beneficial to limiting the axial dimension of the suspension device 100, so as to facilitate the layout of the space on the vehicle to integrate the suspension device 100. Moreover, the transmission method that does not require the shock-absorbing link 111, the driving main shaft 131 and the driven member to be coaxial also helps to reduce the requirement for the assembly accuracy, so that the working stability of the suspension device 100 can be ensured after assembly.

[0110] In some embodiments, the lifting assembly 120 further includes: a connecting member. Wherein, the connecting member is flexibly connected to the shock-absorbing link 111 to change the position of the shock-absorbing link 111 when shifting relative to the vehicle body; the connecting member is in transmission connection with the driven member to shift relative to the vehicle body under the drive of the driven member. That is, the connecting member and the driven member are in transmission cooperation, and combined with the transmission function of the transmission assembly 140, the power is transmitted from the driving member 130 to the shock-absorbing link 111. The transmission ratio can be flexibly configured through multiple transmissions, and the impact force on the driving member 130 can be greatly reduced when impacted by external forces.

[0111] In some embodiments, one of the connecting member and the driven member is configured as a lifting lead screw 121; the other of the connecting member and the driven member is configured as a lead screw nut 122 connected to the lifting lead screw 121. Wherein, the lifting lead screw 121 is disposed in the accommodating cavity 170a. The lead screw nut 122 is sleeved on the lifting lead screw 121, and a threaded connection is formed between the lifting lead screw 121 and the lead screw nut 122. The lifting lead screw 121 / the lead screw nut 122 is connected to the shock-absorbing link 111. If the lifting lead screw 121 is connected to the shock-absorbing link 111, the lifting lead screw 121 can be slid relative to the housing 170 by rotating the lead screw nut 122, thereby driving the shock-absorbing link 111 to slide. If the lead screw nut 122 is connected to the shock-absorbing link 111, the lead screw nut 122 can be slid relative to the housing 170 by rotating the lifting lead screw 121, thereby driving the shock-absorbing link 111 to slide. Only the implementation scheme in which the lifting lead screw 121 is connected to the shock-absorbing link 111 is schematically shown in the drawings of the present application.

[0112] As an exemplary specific implementation scheme, refer to Figure 4 , the central axis (i.e., the first straight line L1) of the shock-absorbing link 111 coincides with the central axis L2 of the lifting lead screw 121, and the axis L3 of the driving main shaft 131 of the motor is parallel to the central axis of the shock-absorbing link 111, that is, the extending direction of the first straight line L1 and the central axis L2 of the lifting lead screw 121 is parallel to the axial direction X1 of the driving main shaft 131, and is spaced from the central axis of the shock-absorbing link 111, so that the motor is disposed on one side of the lifting lead screw 121 and the shock-absorbing link 111 in space to limit the axial dimension of the suspension device 100.

[0113] In some specific implementation schemes, the transmission assembly 140 is disposed between the driving main shaft 131 and the lead screw nut 122 to drive the lead screw nut 122 to rotate and drive the lifting lead screw 121 to slide when the driving main shaft 131 rotates. At this time, the lifting lead screw 121 can be connected to the shock-absorbing link 111 so that the shock-absorbing link 111 slides relative to the housing 170 as the lifting lead screw 121 slides.

[0114] In some embodiments, the transmission assembly 140 includes: a driving member and a driven member. Wherein, the driving member is connected to the driving main shaft 131 to move under the drive of the driving main shaft 131. The driven member is connected to the lifting assembly 120 to drive the lifting assembly 120 to displace relative to the vehicle body when moving. The driving member and the driven member are in transmission connection, that is, the driving member and the driven member are respectively connected to the driving member 130 and the lifting assembly 120, and the driving member and the driven member are used to form a transmission cooperation to realize the power transmission between the driving member 130 and the lifting assembly 120.

[0115] In this application, there are no specific restrictions on the specific transmission and cooperation form between the driving member and the driven member. For example, the two can form a gear transmission, a chain transmission, a belt transmission, a worm and worm gear transmission, etc., to achieve power transmission between the driving member 130 and the lifting assembly 120.

[0116] In some embodiments, a transmission form with play allowance, such as a chain transmission or a belt transmission, is adopted between the driving member 130 and the lifting assembly 120. The transmission form with play allowance mentioned in this application refers to that during the transmission process, it is allowed that the lifting assembly 120 has a direction different from the moving direction of the lifting assembly 120 during normal transmission, that is, there is a play allowance between the transmission assembly 140 and the lifting assembly 120 and the driving member 130, but it does not affect normal transmission. For example, the driving member 130 drives the lifting assembly 120 to shift relative to the vehicle body by means of a belt transmission.

[0117] As an exemplary specific implementation, refer to Figure 3 and Figure 4 , the driving member is configured as a driving pulley 141 fixedly connected coaxially with the driving main shaft 131 of the motor, and the driven member is configured as a driven pulley 142 fixedly connected coaxially with the lead screw nut 122. The transmission assembly 140 further includes: a transmission belt 143. The transmission belt 143 is sleeved on the driving pulley 141 and the driven pulley 142, that is, the motor drives the lead screw nut 122 to rotate by means of a belt transmission.

[0118] Adopting such a solution can, on the one hand, reduce the external impact force transmitted from the shock-absorbing link 111 to the driving member 130, and on the other hand, can limit the axial dimension of the whole formed by the driving member 130, the lifting assembly 120 and the shock-absorbing link 111, and at the same time reduce the requirement for the coaxiality accuracy during assembly.

[0119] In some embodiments, refer to Figure 2 and Figure 3 , in Figure 2 and Figure 3 the exemplary specific implementation, a fixing portion 171 is provided inside the housing 170. The driven pulley 142 passes through the through hole formed in the fixing portion 171 and is rotationally connected to the fixing portion 171. The lead screw nut 122 is disposed inside the driven pulley 142 and is rotationally connected to the housing 170 through the driven pulley 142. A first bearing 172 and a second bearing 173 are sleeved on the driven pulley 142. At least a part of the fixing portion 171 is located between the first bearing 172 and the second bearing 173, and the first bearing 172 and the second bearing 173 are used to position and install the driven pulley 142 and reduce the resistance when the driven pulley 142 rotates.

[0120] Refer to Figure 3, a first locking ring 144 is fixed on the driven pulley 142. A first bearing 172 is located between the first locking ring 144 and the fixing portion 171, and the first bearing 172 is positioned by the first locking ring 144. Two end faces of the second bearing 173 are located between one surface of the driven pulley 142 and the fixing portion 171, thereby positioning the second bearing 173.

[0121] Reference Figure 3 , a second locking ring 145 is fixed on the driven pulley 142 or the lead screw nut 122. A third bearing 146 is arranged between the second locking ring 145 and the lead screw nut 122. When the lead screw is rotated and arranged in the vertical direction or inclined to the vertical direction, the third bearing 146 can be used to support and position the lead screw nut 122. The second locking ring 145 can be used to position the third bearing 146.

[0122] Hereinafter, the specific connection manner between the shock-absorbing link 111 and the lifting assembly 120 will be mainly described by way of example.

[0123] In some embodiments, reference Figure 2 , the suspension device 100 further includes: a buffer device 160. Among them, the buffer device 160 has a buffer member. The buffer member is arranged between the shock-absorbing link 111 and the lifting assembly 120 to buffer the acting force transmitted from the shock-absorbing link 111 to the lifting assembly 120. Due to the arrangement of the buffer member, the shock-absorbing link 111 and the lifting assembly 120 form a flexible connection. Different from the connection manner in the existing solution where the lifting assembly 120 is rigidly connected to the piston rod, the flexible connection between the shock-absorbing link 111 and the lifting assembly 120 in the present application can buffer the impact force when an external force impacts the shock-absorbing link 111, thereby reducing the possibility of damage to the lifting assembly 120 and further improving the working stability of the suspension device 100. The impact force from the outside on the shock-absorbing link 111 is slowed down during the transmission to the lifting assembly 120, realizing the protection of the lifting assembly 120.

[0124] It should be noted that in the present application, for the buffer member arranged between the shock-absorbing link 111 and the lifting assembly 120, it is not limited to the buffer member being located between the shock-absorbing link 111 and the lifting assembly 120 in terms of spatial position, and it is interpreted as the buffer member being arranged on the force conduction path from the shock-absorbing link 111 to the lifting assembly 120, that is, the buffer member can buffer the mechanical impact conducted from the shock-absorbing link 111 to the lifting assembly 120. On the basis of realizing this function, the buffer member can be arranged not between the shock-absorbing link 111 and the lifting assembly 120 in terms of spatial position, but on the side or other positions of the shock-absorbing link 111 and the lifting assembly 120, as long as it can realize using the buffer member to slow down the mechanical impact from the shock-absorbing link 111 to the lifting assembly 120.

[0125] In some embodiments, a buffer cavity 160a is provided inside the buffer device 160. The buffer member is accommodated in the buffer cavity 160a. By providing the buffer cavity 160a, the inner wall of the buffer cavity 160a can be used to limit the position of the buffer member, so that the buffer member has a determined installation position between the shock-absorbing link 111 and the lifting assembly 120, and the buffer member can buffer external impacts relatively stably for a long time.

[0126] For the specific type of the buffer member, those skilled in the art can select it according to needs. For example, referring to Figure 9 , the buffer member can be an air spring provided in the buffer cavity 160a and connected between the shock-absorbing link 111 and the lifting assembly 120. Or, referring to Figure 7 , the buffer device 160 can also be an airbag 160b and connected between the shock-absorbing link 111 and the lifting assembly 120.

[0127] For another example, referring to Figure 5 , the buffer member includes a buffer gasket 161 made of a soft material. The buffer gasket 161 has the ability of elastic deformation. After the buffer gasket 161 is arranged between the shock-absorbing link 111 and the lifting assembly 120, its elastic deformation ability is used to buffer external impacts. The soft material is, for example, rubber, silica gel and other materials, and the present application does not limit the specific type of the soft material.

[0128] For yet another example, referring to Figure 8 , the buffer member includes a buffer spring 162. After the buffer spring 162 is arranged between the shock-absorbing link 111 and the lifting assembly 120, its elastic deformation ability is used to buffer external impacts.

[0129] In some embodiments, referring to Figure 6 , the buffer device 160 includes: a first buffer mounting member 163 and a second buffer mounting member 164. Among them, the first buffer mounting member 163 is fixedly connected to the lifting assembly 120. The second buffer mounting member 164 is fixedly connected to the second buffer mounting member 164. The buffer cavity 160a is formed between the first buffer mounting member 163 and the second buffer mounting member 164, so that the inner walls of the first buffer mounting member 163 and the second buffer mounting member 164 forming the buffer cavity 160a limit the position of the buffer member.

[0130] In some embodiments, at least a part of the shock-absorbing link 111 is inserted into the buffer cavity 160a and contacts the buffer member.

[0131] In some embodiments, a through hole 164a communicating with the buffer cavity 160a is provided on the second buffer mounting member 164. The shock-absorbing link 111 is inserted into the buffer cavity 160a from the through hole 164a, and the shock-absorbing link 111 and the second buffer mounting member 164 form a sliding connection along the first straight line direction.

[0132] Reference Figure 6 shows a specific implementation of arranging a buffer gasket 161 between a first buffer mounting member 163 and a second buffer mounting member 164. In the figure, a first contact member 120a is fixedly arranged at one end of the lifting assembly 120 close to the shock absorption connecting rod 111, and the first contact member 120a is inserted into the buffer cavity 160a. Correspondingly, a second contact member 111a is fixedly arranged at one end of the shock absorption connecting rod 111 close to the lifting assembly 120, the second contact member 111a is inserted into the buffer cavity 160a, and a first buffer pad 161a is arranged between the first contact member 120a and the second contact member 111a. The two opposite end faces of the first buffer pad 161a respectively abut against the first contact member 120a and the second contact member 111a. In this implementation, the connection between the lifting assembly 120, the first buffer pad 161a and the shock absorption connecting rod 111 is relatively compact, so that the shock absorption connecting rod 111 can be relatively stably connected to the lifting assembly 120.

[0133] In a further solution, a second buffer pad 161b can be arranged between the first contact member 120a and the lifting assembly 120, and / or between the second contact member 111a and the shock absorption connecting rod 111 to further improve the buffering ability of the buffer member against external impacts.

[0134] Reference Figure 8 shows a specific implementation of arranging a buffer spring 162 between a first buffer mounting member 163 and a second buffer mounting member 164. In the figure, the shock absorption connecting rod 111 is inserted into the accommodating cavity 170a from the second buffer mounting member 164 and abuts against one end of the buffer spring 162, and the other end of the buffer spring 162 abuts against the inner wall of the accommodating cavity 170a formed by the first buffer mounting member 163, so that at least a part of the external impact conducted from the shock absorption connecting rod 111 can be buffered at the buffer spring 162. In this implementation, when the buffer spring 162 is subjected to external impacts of different magnitudes, it can gradually deform itself to relatively smoothly achieve buffering.

[0135] In a further solution, a buffer gasket 161 can be further arranged between the part of the shock absorption connecting rod 111 inserted into the accommodating cavity 170a and the second buffer mounting member 164 to avoid the end face of the shock absorption connecting rod 111 directly impacting the second buffer mounting member 164 during the process of resetting the shock absorption connecting rod 111 after the buffer spring 162 is deformed by an external force impact, so as to further improve the stability of the suspension device 100 during use.

[0136] Reference Figure 9, which illustrates a specific implementation of setting a gas medium between the first buffer mounting member 163 and the second buffer mounting member 164. In the figure, the shock-absorbing connecting rod 111 is inserted into the receiving cavity 170a from the second buffer mounting member 164, and the gas medium is contained between the shock-absorbing connecting rod 111 and the part of the first buffer mounting member 163 in the buffer cavity 160a. At this time, the cooperation of the first buffer mounting member 163, the second buffer mounting member 164 and the gas medium can be equivalent to an air spring, so that when the shock-absorbing connecting rod 111 is impacted by an external force and slides in the buffer cavity 160a, the compression of the gas medium is used to buffer the external impact. In this implementation, the structure of the buffer device 160 can be simplified.

[0137] In a further solution, a buffer gasket 161 can be further provided between the part of the shock-absorbing connecting rod 111 inserted into the receiving cavity 170a and the second buffer mounting member 164, so as to avoid the end face of the shock-absorbing connecting rod 111 directly impacting the second buffer mounting member 164 during the process of resetting the shock-absorbing connecting rod 111 after the air spring is deformed by an external force impact, thereby further improving the stability of the suspension device 100 during use.

[0138] It should be understood that the above exemplary description is for the convenience of understanding the concept of the present invention, rather than a specific limitation on the specific connection method of the flexible connection between the shock-absorbing connecting rod 111 and the lifting assembly 120.

[0139] In some embodiments, refer to Figure 10 , a sliding limit portion 170b extending along the direction of the first straight line L1 is provided inside the housing 170. Correspondingly, a sliding fit portion 160c that cooperates with the sliding limit portion 170b to limit the relative movement of the buffer device 160 with respect to the housing 170 is provided on the buffer device 160. In a specific implementation, the sliding limit portion 170b can be a chute formed on the inner wall of the housing 170 and extending along the direction of the first straight line L1, and the sliding fit portion 160c can be a protrusion protruding from the side wall of the second buffer mounting member 164 and inserted into the chute, so as to limit the sliding direction of the second buffer mounting member 164 and the shock-absorbing connecting rod 111 relative to the housing 170.

[0140] The following will mainly give an exemplary description of at least a part of the specific structure of the shock absorber 110.

[0141] In some embodiments, refer to Figure 2, the shock absorber 110 includes: a cylinder block 112. Among them, the cylinder block 112 is adapted to be connected to a wheel and is in sliding fit with the shock absorber link 111. The shock absorber link 111 is at least partially inserted into the receiving cavity 170a, and another part passes through the receiving cavity 170a and forms a physical connection with the cylinder block 112. For example, when the suspension device 100 is integrated onto a vehicle, the cylinder block 112 can specifically be connected to the wheel of the vehicle, and the shock absorber link 111 can be used as a piston rod connected to the cylinder block 112. The inventive concept of the present application does not involve improvements to the specific structure of the sliding connection formed between the cylinder block 112 and the shock absorber link 111 in the shock absorber 110 and the adjustment of the stiffness of the suspension device 100 during the relative sliding of the two. Therefore, the specific manner of the sliding fit between the cylinder block 112 and the shock absorber link 111 will not be elaborated here.

[0142] In some embodiments, the elastic reset member 113 includes: a first type of elastic member 113. Among them, the first type of elastic member 113 is disposed within the receiving cavity 170a. In a specific solution, referring to Figure 2 , for example, one end of the first type of elastic member abuts against the buffer device 160, and the other end abuts against the cylinder block 112. In other solutions, for example, a structure that abuts against the first type of elastic member 113 can also be fixedly disposed on the lifting lead screw 121, so that the first type of elastic member 113 is disposed between the lifting lead screw 121 and the cylinder block 112, as long as the first type of elastic member 113 can move with the lifting assembly 120 and can provide an elastic force to drive the cylinder block 112 to reset to the cylinder block 112. When the suspension device 100 is integrated onto a vehicle, when an external force acts on the cylinder block 112 to cause the cylinder block 112 to move relative to the vehicle, the first type of elastic member 113 provides an elastic force to the cylinder block 112, so that the suspension device 100 can be used to buffer external impact forces. The first elastic member 113 is disposed within the receiving cavity 170a can reduce the negative impact of the external environment of the housing 170 on the service life of the first type of elastic member 113. The first type of elastic member 113 can be a spring, for example.

[0143] In some embodiments, the elastic reset member 113 further includes: a second type of elastic member 114. Among them, the second type of elastic member 114 is disposed between the housing 170 and the cylinder block 112. The second type of elastic member 114 is located outside the receiving cavity 170a. In a specific solution, the suspension device 100 further includes: a bracket 180. The bracket 180 is fixedly connected to the outside of the cylinder block 112, that is, the bracket 180 is located outside the receiving cavity 170a. One end of the second type of elastic member 114 abuts against the housing 170, and the other end abuts against the bracket 180. The second type of elastic member 114 can also be used to buffer external impacts. The second type of elastic reset member 113 can be a spring, for example.

[0144] In some embodiments, referring to Figure 2, the first type of elastic member 113 and the second type of elastic member 114 can be integrally provided on the suspension device, thereby enhancing the buffering ability of the suspension device 100 against external impact forces.

[0145] According to a second aspect of the present application, with reference to Figure 11 , a vehicle 10 is provided, including the aforementioned suspension device 100. The vehicle 10 has all the beneficial effects of the aforementioned suspension device 100, which will not be elaborated herein in the present application.

[0146] The vehicle 10 may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present application does not make specific limitations thereto.

[0147] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0148] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0149] Among the embodiments, implementation manners and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0150] The above are only preferred embodiments of the present application and do not impose any form of limitation on the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A suspension device, characterized in that, Comprising: A shock absorber having a shock linkage; A lifting assembly connected to the shock linkage for changing the position of the shock linkage by shifting relative to the vehicle body; A driving member having a driving main shaft for driving the lifting assembly to displace relative to the vehicle body; A transmission assembly disposed between the lifting assembly and the driving member to transmit the acting force provided by the driving member for the lifting assembly to displace relative to the vehicle body; An adjusting assembly connected to the driving member for adjusting the distance between the driving member and the lifting assembly in a first direction different from the axial direction of the driving main shaft, thereby adjusting the connection positions among the transmission assembly, the driving member, and the lifting assembly.

2. The suspension device according to claim 1, wherein The adjusting assembly includes: An adjusting bracket connected to the driving member; An adjusting member mechanically connected to the adjusting bracket for driving the adjusting bracket to move relative to the lifting assembly to adjust the relative position between the driving member and the lifting assembly.

3. The suspension device according to claim 2, wherein, Further comprising: A housing configured to form a receiving cavity for receiving the driving member; Wherein, the adjusting bracket is located within the receiving cavity.

4. The suspension device according to claim 3, wherein One of the adjusting bracket and the housing includes: A limiting portion for cooperating with the other of the adjusting bracket and the housing to limit the moving direction of the adjusting bracket relative to the housing; The other of the adjusting bracket and the housing is provided with: A limiting sliding groove for the limiting portion to be inserted into and form a sliding connection with the limiting portion to limit the sliding direction of the adjusting bracket relative to the housing.

5. The suspension device according to claim 4, wherein The adjusting assembly further includes: A cooperating member for mechanically connecting with the adjusting member to drive the adjusting member to move relative to the housing; The adjusting member is provided with: A threaded portion for forming a threaded connection with the cooperating member.

6. The suspension device according to claim 5, wherein The adjusting bracket further includes: A first connecting portion fixedly connected to the driving member; A second connecting portion fixedly connected / integrally formed between the adjusting member and the first connecting portion; Wherein, the limiting portion / limiting sliding groove on the adjusting bracket is provided on the first connecting portion; the second connecting portion is provided at one end of the adjusting member away from the cooperating member.

7. The suspension device according to any one of claims 1 to 6, wherein The lifting assembly includes: A driven member in transmission connection with the transmission assembly; Wherein, the acting force transmission direction between the transmission assembly and the driven member is set to be different from the position changing direction of the shock linkage.

8. The suspension device according to claim 7, wherein At least a part of the driven member is configured as a rotary body structure formed by rotating around a first straight line; one of the shock linkage and the driving main shaft is coaxially arranged with the rotary body structure.

9. The suspension device according to claim 7, wherein The lifting assembly further includes: A connecting member, which is connected to the shock-absorbing link to change the position of the shock-absorbing link when shifting relative to the vehicle body; Wherein, the connecting member and the driven member are in transmission connection to shift relative to the vehicle body under the drive of the driven member.

10. The suspension device according to claim 9, wherein One of the connecting member and the driven member is configured as a lifting lead screw; the other of the connecting member and the driven member is configured as a lead screw nut connected to the lifting lead screw.

11. The suspension device according to claim 1, wherein: The transmission assembly includes: A driving member, which is connected to the driving main shaft to move under the drive of the driving main shaft; A driven member, which is connected to the lifting assembly to drive the lifting assembly to shift relative to the vehicle body when moving; Wherein, the driving member and the driven member are in transmission connection.

12. The suspension device according to claim 1, wherein The driving member drives the lifting assembly to shift relative to the vehicle body in the form of belt drive / chain drive.

13. The suspension device according to claim 1, wherein: The driving member is configured as a motor; the driving main shaft is configured as a solid shaft.

14. The suspension device according to any one of claims 3 to 6, characterized in that, It further includes: A buffer device, which has a buffer member; Wherein, the buffer member is arranged between the shock-absorbing link and the lifting assembly to buffer the force transmitted from the shock-absorbing link to the lifting assembly.

15. The suspension device according to claim 14, wherein A buffer cavity is provided inside the buffer device; the buffer member is accommodated in the buffer cavity.

16. The suspension device according to claim 15, wherein The buffer device includes: A first buffer mounting member, which is fixedly connected to the lifting assembly; A second buffer mounting member, which is fixedly connected to the second buffer mounting member; Wherein, the buffer cavity is formed between the first buffer mounting member and the second buffer mounting member, so that the first buffer mounting member and the second buffer mounting member form the inner wall of the buffer cavity to limit the buffer member.

17. The suspension device according to claim 16, wherein At least a part of the shock-absorbing link is inserted into the buffer cavity and contacts the buffer member.

18. The suspension device according to claim 17, wherein A perforation communicating with the buffer cavity is provided on the second buffer mounting member; the shock-absorbing link is inserted into the buffer cavity from the perforation, and the shock-absorbing link and the second buffer mounting member form a sliding connection along a first straight line direction.

19. The suspension device according to claim 15, wherein The buffer member includes an air spring; the air spring is arranged in the buffer cavity.

20. The suspension device according to claim 14, wherein The buffer member includes a buffer pad made of a soft material, or The buffer member includes a buffer spring.

21. The suspension device according to claim 14, wherein The shock absorber includes: A cylinder body, which is adapted to be connected to a wheel and is in sliding fit with the shock-absorbing link; Wherein, at least a part of the shock-absorbing connecting rod is inserted into the accommodating cavity, and the other part passes through the accommodating cavity and forms a physical connection with the cylinder block.

22. The suspension device according to claim 21, characterized in that, Further comprising: A first type of elastic member disposed in the accommodating cavity, one end of the first type of elastic member abuts against the buffer device, and the other end abuts against the cylinder block.

23. The suspension device according to claim 21, characterized in that, Further comprising: A second type of elastic member disposed between the housing and the cylinder block; A bracket fixedly connected to the outside of the cylinder block; Wherein, the second type of elastic member is located outside the accommodating cavity, one end of the second type of elastic member abuts against the housing, and the other end abuts against the bracket.

24. A vehicle, characterized in that, Comprising the suspension device according to any one of claims 1 to 23.

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