Suspension device and vehicle

Abstract

The invention relates to a suspension device and a vehicle, and the suspension device comprises a prime mover which is used for providing driving force; the connecting assembly is suitable for being connected to a wheel; the transmission part can rotate around a central axis relative to the connecting assembly, so that the prime motor drives the connecting assembly to move in the axial direction relative to the transmission part through the transmission part; wherein the connecting assembly is provided with an accommodating space for accommodating at least one part of the transmission part. The suspension device and the vehicle have the beneficial effect that the overall length of the suspension device is reduced by containing a part of the transmission part through the connecting assembly.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a suspension device and a vehicle. Background Art

[0002] The suspension device is a general term for all force-transmitting connection devices between the vehicle's frame (or load-bearing body) and the axle (or wheel). Its function is to transmit the force and torque acting between the wheel and the frame, and to cushion the impact force transmitted to the frame or body by uneven road surface, and reduce the vibration caused thereby, so as to ensure that the vehicle can run smoothly.

[0003] In the related art, in order to realize the function of the suspension device to adjust the height of the vehicle, a motor and corresponding transmission components are set in the suspension device to electrically adjust the height. However, the setting of these motors and transmission components will lead to an increase in the overall length of the suspension device. Summary of the Invention

[0004] Embodiments of the present application provide a suspension device and a vehicle, which mitigate the impact on the large motor of the suspension device, thereby at least partially solving the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, there is provided a suspension device comprising:

[0006] Prime mover, used to provide driving force;

[0007] a connecting assembly adapted to be connected to a wheel;

[0008] a transmission member capable of rotating relative to the connecting assembly about a central axis, so that the prime mover drives the connecting assembly to move axially relative to the transmission member through the transmission member;

[0009] Wherein, the connecting assembly is provided with an accommodating space for accommodating at least a portion of the transmission member.

[0010] Optionally, in some embodiments of the present application, the transmission member and the connecting assembly form a transmission coupling to drive the connecting assembly to move axially along the central axis when the transmission member rotates.

[0011] Optionally, in some embodiments of the present application, the transmission member has a first threaded structure, and the connecting assembly has a second threaded structure that cooperates with the first threaded structure, so that the transmission member can drive the connecting assembly to move axially when it rotates.

[0012] Optionally, in some embodiments of the present application, at least a portion of the transmission member is configured as a ball screw; and the connecting assembly includes:

[0013] a connecting rod having a receiving space for receiving at least a portion of the ball screw;

[0014] a ball nut connected to the ball screw and moving axially when the ball screw rotates;

[0015] Wherein, the ball nut is fixedly connected to the connecting rod.

[0016] Optionally, in some embodiments of the present application, the suspension device further includes:

[0017] The transmission belt is used to realize transmission between the prime mover and the transmission member.

[0018] Optionally, in some embodiments of the present application, the suspension device further includes:

[0019] an active member, which forms a non-rotating connection with the output shaft of the prime mover;

[0020] A driven member, which forms a non-rotating connection with the transmission member;

[0021] The transmission belt is respectively mounted on the active member and the driven member to transmit the power of the active member to the driven member.

[0022] Optionally, in some embodiments of the present application, the transmission belt is constructed to have a belt-shaped body and belt teeth attached to the belt-shaped body.

[0023] Optionally, in some embodiments of the present application, the active member and the driven member have transmission teeth that cooperate with the belt teeth.

[0024] Optionally, in some embodiments of the present application, the suspension device further comprises: a housing having a movable space;

[0025] There is a gap between the transmission member and the connecting assembly so that the accommodating space can communicate with the movable space of the connecting assembly through the gap.

[0026] Optionally, in some embodiments of the present application, the accommodating space is filled with a damping medium so that the connecting assembly and the transmission member are subjected to a damping force of the damping medium when they move relative to each other.

[0027] Optionally, in some embodiments of the present application, the connection component has:

[0028] The flow channel structure is used to allow the damping medium to flow into and / or out of the accommodating space when the connecting assembly and the transmission member move relative to each other.

[0029] Optionally, in some embodiments of the present application, the flow channel structure includes:

[0030] a first flow channel, for allowing the damping medium to flow into or out of the accommodating space;

[0031] a second flow channel, for allowing the damping medium to flow out of or into the accommodating space;

[0032] Wherein, the first flow channel and the second flow channel are arranged independently of each other.

[0033] Optionally, in some embodiments of the present application, the suspension device further includes:

[0034] The shell has a space for activities;

[0035] Wherein, at least a part of the connecting component is movably arranged in the activity space, and the accommodating space is connected with the activity space through the first flow channel and / or the second flow channel.

[0036] Optionally, in some embodiments of the present application, the connection component has:

[0037] a partition, disposed in the activity space to divide the activity space into a first cavity and a second cavity;

[0038] The accommodating space is connected to the first cavity through a first flow channel, and the accommodating space is connected to the second cavity through a second flow channel.

[0039] Optionally, in some embodiments of the present application, there is a gap between the transmission member and the connecting assembly, and the first flow channel is at least partially constituted by the gap.

[0040] Optionally, in some embodiments of the present application, at least a portion of the transmission member is configured as a ball screw; and the connecting assembly includes:

[0041] link;

[0042] a ball nut connected to the ball screw to move axially when the ball screw rotates, and the ball nut is fixedly connected to the connecting rod;

[0043] Wherein, the first flow channel is formed by at least the gap between the transmission member and the connecting rod and the gap between the transmission member and the ball nut.

[0044] Optionally, in some embodiments of the present application, the connection component has:

[0045] An interlayer space is provided extending axially along the central axis;

[0046] a first through hole communicating between the interlayer space and the accommodation space;

[0047] a second through hole communicating between the interlayer space and the second cavity;

[0048] The second flow channel is at least partially formed by the first through hole, the interlayer space and the second through hole.

[0049] Optionally, in some embodiments of the present application, the suspension device further includes:

[0050] a housing having an activity space, wherein at least a portion of the connecting assembly is movably disposed in the activity space;

[0051] a spring seat fixedly connected to the outer periphery of the connecting assembly;

[0052] a shock-absorbing spring, used to cushion external impacts on the connecting assembly;

[0053] Wherein, in the axial direction of the central axis, the shock-absorbing spring is arranged between the housing and the spring seat.

[0054] Optionally, in some embodiments of the present application, the shock-absorbing spring includes at least one of a coil spring and an air spring.

[0055] Optionally, in some embodiments of the present application, the suspension device further includes:

[0056] a housing, wherein at least a portion of the connecting component is movably disposed inside the housing and one end of the connecting component extends out of the housing;

[0057] A dust cover is sleeved on at least a portion of the outer shell and at least a portion of the outer periphery of the connecting assembly.

[0058] According to a second aspect of the present application, a vehicle is provided, comprising the aforementioned suspension device.

[0059] The beneficial effect of the present application is to provide a suspension device and a vehicle in which a portion of the transmission member is accommodated by a connecting assembly to reduce the overall length of the suspension device.

[0060] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0061] By setting up the transmission member and the connecting assembly, the prime mover drives the connecting assembly to move axially relative to the transmission member through the transmission member, thereby lifting and lowering the vehicle; and the connecting assembly is provided with a receiving space to accommodate the rotating transmission member, so that the axial positions of the transmission member and the connecting assembly at least partially overlap, thereby reducing the overall length of the suspension device on the basis of achieving vehicle lifting.

[0062] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0064] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0065] Figure 1 is a schematic diagram of the overall structure of a suspension device provided in an exemplary embodiment of the present application;

[0066] Figure 2 is an internal cross-sectional view of a first suspension device provided in an exemplary embodiment of the present application;

[0067] Figure 3 is an internal cross-sectional view of a second suspension device provided in an exemplary embodiment of the present application;

[0068] Figure 4 is a side view of a second suspension device provided in an exemplary embodiment of the present application;

[0069] Figure 5 is another internal cross-sectional view of a second suspension device provided in an exemplary embodiment of the present application;

[0070] Figure 6 is another internal cross-sectional view of a suspension device provided in an exemplary embodiment of the present application;

[0071] Figure 7 It is a schematic diagram of the overall structure of a vehicle provided in an exemplary embodiment of the present application.

[0072] Description of reference numerals:

[0073] 100. Suspension device;

[0074] 110, bracket;

[0075] 120, prime mover; 121, housing; 122, stator; 123, rotor; 124, drive shaft;

[0076] 130, housing; 131, main body; 131a, main body space; 132, extension; 132a, activity space; 132b, first cavity; 132c, second cavity;

[0077] 141. Transmission belt; 142. Ball screw; 144. Active element; 145. Driven element;

[0078] 151. First bearing; 152. Second bearing; 153. Upper locking ring;

[0079] 161. Upper sealing cover; 162. Screw bearing; 163. Lower sealing cover;

[0080] 170, connection components;

[0081] 172, connecting rod; 172a, partition; 172b, interlayer space; 172c, first through hole; 172d, second through hole;

[0082] 173, ball nut;

[0083] 170a, first flow channel; 170b, second flow channel; 170c, accommodation space;

[0084] 181. Shock-absorbing spring; 182. Spring seat; 183. Dust cover; 191. Sliding bearing;

[0085] C1, central axis;

[0086] 10. Vehicles. DETAILED DESCRIPTION

[0087] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0088] Reference Figures 1 to 3 As shown, as a first aspect of the present application, the present application provides a suspension device 100 , and the suspension device 100 of the present application is suitable for a vehicle 10 .

[0089] Specifically, the suspension device 100 includes a prime mover 120 , a connecting assembly 170 and a transmission member.

[0090] The prime mover 120 is used to provide driving force; the connecting assembly 170 is suitable for connection to the wheel; the transmission member can rotate around a central axis C1 relative to the connecting assembly 170, so that the prime mover 120 drives the connecting assembly 170 to move axially relative to the transmission member through the transmission member, thereby changing the relative position of the connecting assembly 170 and the transmission member; the connecting assembly 170 is provided with a receiving space 170c for receiving at least a portion of the transmission member.

[0091] It is understood that the prime mover 120 and the transmission member can be driven by belt drive, gear drive, or by direct connection of the prime mover 120 to the transmission member. When the transmission member moves to at least one axial position, at least a portion of it is located in the accommodation space 170c.

[0092] By adopting the above-mentioned technical solution, through the arrangement of the transmission member and the connecting assembly 170, the prime mover 120 drives the connecting assembly 170 to move axially relative to the transmission member through the transmission member, thereby playing the role of lifting and lowering the vehicle 10; and the connecting assembly 170 is provided with a receiving space 170c to accommodate the rotating transmission member, so that the axial position of the transmission member and the connecting assembly 170 at least partially overlaps, thereby realizing the lifting and lowering of the vehicle 10 and reducing the overall length of the suspension device 100.

[0093] Specifically, the connection between the connecting assembly 170 and the wheel can be direct or indirect. As a more specific solution, the connecting member has a connecting structure to connect with the wheel; illustratively, the connecting structure is constructed as a part of a hinge.

[0094] In some embodiments, reference Figures 1 to 3 As shown, the transmission member and the connecting assembly 170 form a transmission coupling to drive the connecting assembly 170 to move axially along the central axis C1 when the transmission member rotates.

[0095] It can be understood that the transmission coupling formed by the transmission member and the connecting assembly 170 can be a gear transmission or a screw transmission, etc., which can be selected according to actual needs to drive linear motion through rotation.

[0096] In some embodiments, reference Figures 1 to 3 As shown, the transmission member has a first thread structure, and the connecting assembly 170 has a second thread structure that matches the first thread structure, so that when the transmission member rotates, it can drive the connecting assembly 170 to move axially.

[0097] With such a solution, the transmission member and the connecting assembly 170 are matched with a threaded structure, which can improve the transmission accuracy of the transmission member and the connecting assembly 170, thereby achieving precise adjustment of the axial movement of the connecting assembly 170.

[0098] In some embodiments, reference Figures 1 to 3 As shown, at least part of the transmission member is constructed as a ball screw 142 ; the connecting assembly 170 includes: a connecting rod 172 and a ball nut 173 .

[0099] The connecting rod 172 is provided with an accommodating space 170c for accommodating at least a portion of the ball screw 142, and is used to realize the connection between the connecting assembly 170 and the wheel; the ball nut 173 is connected to the ball screw 142 and moves axially when the ball screw 142 rotates; more specifically, the ball nut 173 is mounted on the ball screw 142, and the ball nut 173 is fixedly connected to the connecting rod 172.

[0100] For example, the ball nut 173 is embedded in the middle of the upper end of the connecting assembly 170 and fixes the ball nut 173 to the connecting assembly 170. The connecting rod 172 is provided with the bracket 110 connected to the wheel, and because the connecting rod 172 is fixed to the wheel, the entire connecting assembly 170 cannot rotate and can only move axially.

[0101] In some embodiments, reference Figures 1 to 3 As shown, the suspension device 100 further includes a transmission belt 141. The transmission belt 141 is used to realize transmission between the prime mover 120 and the transmission member, thereby transmitting the driving force of the prime mover 120 to the transmission member.

[0102] The ball screw 142 can rotate under the drive of the transmission belt 141; the ball nut 173 is mounted on the ball screw 142, and when the ball screw 142 rotates, the ball nut 173 moves along the rotation axis of the ball screw 142.

[0103] In this application, the transmission belt 141 itself can produce a certain amount of elastic deformation. Of course, as the elastic deformation reciprocates and accumulates, the transmission belt 141 itself may also produce a certain amount of plastic deformation. The transmission belt 141 transmits the applied force through tension (macroscopically manifested as pulling force), that is, the transmission belt 141 is designed to transmit pulling force but not compressive force.

[0104] For example, when the transmission belt 141 is a synchronous belt, the flexibility of the synchronous belt itself can offset the instantaneous force of the ball screw 142, so that the prime mover 120 is not easily affected by the instantaneous rotation.

[0105] In some embodiments, reference Figures 1 to 3 、 Figure 6 As shown, the suspension device 100 further includes a driving member 144 and a driven member 145 .

[0106] The driving member 144 forms a non-rotating connection with the output shaft of the prime mover 120; the driven member 145 forms a non-rotating connection with the transmission member; the transmission belt 141 is respectively mounted on the driving member 144 and the driven member 145 to transmit the power of the driving member 144 to the driven member 145.

[0107] Exemplarily, both the driving member 144 and the driven member 145 are synchronous wheels, and accordingly, the transmission belt 141 is a synchronous belt.

[0108] In another example, both the active member 144 and the driven member 145 are pulleys, and accordingly, the transmission belt 141 is a belt.

[0109] In some embodiments, the transmission belt 141 is constructed with a belt-like body and belt teeth attached to the belt-like body. The driving member 144 and the driven member 145 have transmission teeth that mate with the belt teeth. In other words, both the driving member 144 and the driven member 145 utilize synchronous pulleys, and the transmission belt 141 utilizes a synchronous belt, resulting in high transmission efficiency.

[0110] With this solution, the synchronous belt drive prevents the torsion of ball screw 142 caused by high-frequency road excitation from directly affecting prime mover 120. The synchronous belt provides a certain buffering effect, thereby protecting prime mover 120. Furthermore, the gear ratio between driving element 144 and driven element 145 can achieve the effect of reducing speed and increasing torque of driven element 145, thereby reducing the power of prime mover 120.

[0111] In addition, in order to limit the position of the follower 145, the upper locking ring 153 is connected to the upper end of the follower 145 through threads. Due to the existence of the upper locking ring 153, the follower 145 can be stuck on the bearing and thus supported by the housing 130.

[0112] In some embodiments, reference Figures 1 to 3 As shown, the suspension device 100 further includes a first bearing 151 and a second bearing 152. The first bearing 151 and the second bearing 152 are used to support the rotation of the driven member 145, so that the driven member 145 can maintain axial rotation, reduce friction during movement, and provide axial support force.

[0113] Specifically, the top of the ball screw 142 is connected to the active member 144 to prevent rotation. For example, a key connection is used to prevent rotation, or a threaded connection is used to fix the ball screw 142 and the active member 144.

[0114] In some embodiments, reference Figures 1 to 3 、 Figure 6 As shown, the prime mover 120 of the present application adopts a high-voltage motor or a low-voltage motor, including: a casing 121 , a stator 122 , a rotor 123 and a drive shaft 124 .

[0115] The stator 122 is fixedly mounted within the housing 121, while the rotor 123 is rotatably mounted within the stator 122. The stator 122 is wound with a field winding that generates a variable rotating magnetic field when energized. The rotor 123 has paired magnetic poles, causing it to rotate under the influence of the rotating magnetic field of the stator 122. The rotor 123 is fixedly coupled to the drive shaft 124, which drives the drive shaft 124 to rotate. The drive shaft 124 is fixed to the active element 144, thereby driving the active element 144 in rotation.

[0116] In some embodiments, reference Figures 1 to 3 As shown, the suspension device 100 further includes a housing 130. The housing 130 includes a main body 131 and an extension 132. The main body 131 defines a main space 131a for accommodating the motor, while the extension 132 defines an active space 132a for accommodating at least part of the connecting assembly 170.

[0117] Prime mover 120, transmission belt 141, driving member 144, and driven member 145 are completely contained within main body space 131a; a portion of connecting assembly 170 is contained within movable space 132a. Driven member 145 is rotationally connected to housing 130, thereby forming a rotational connection between the transmission member and housing 130 at least through driving member 144.

[0118] In some embodiments, reference Figure 1 and Figure 2 As shown, a gap is provided between the transmission member and the connecting assembly 170, allowing the accommodation space 170c to communicate with the movable space 132a of the connecting assembly 170 through the gap. The provision of the gap allows gas to flow into or out of the accommodation space 170c through the gap when the connecting assembly 170 moves relative to the transmission member, thereby preventing the increase or decrease in the gas pressure in the accommodation space 170c from affecting the movement of the connecting assembly 170.

[0119] Understandable, refer to Figure 1 and Figure 2 As shown, a gap extends axially between the transmission member and the connecting assembly 170. The axially adjacent space can be the active space 132a within the housing 130, which is connected to the main body space 131a. The housing 130 isolates the active space 132a from the external environment, preventing impurities (such as dust and water stains) from entering the active space 132a and clogging the gap between the transmission member and the connecting assembly 170. The housing 130 is also connected to a sliding bearing 191, which is embedded in the lower end of the housing 130 and engages with the outer wall of the connecting rod 172 to smooth the upward and downward movement of the connecting assembly 170.

[0120] In another example, the axial side space may also be the external environment of the housing 130 .

[0121] In some embodiments, reference Figure 1 and Figure 3 As shown, the accommodating space 170c is filled with a damping medium so that the connecting assembly 170 and the transmission member are subjected to a damping force of the damping medium when relative movement occurs.

[0122] With this solution, since there is damping when the motor brakes, the relative movement between the connecting assembly 170 and the transmission member is also affected by the damping force of the liquid medium. The combined effect of the two can enable the suspension device 100 to achieve a higher damping value.

[0123] In some embodiments, reference Figure 1 、 Figures 3 to 5 As shown, the connecting assembly 170 has a flow channel structure. The flow channel structure is used to allow the damping medium to flow into and / or out of the accommodating space 170c when the connecting assembly 170 and the transmission member move relative to each other.

[0124] It can be understood that the flow channel structure can be designed to include multiple flow channels, respectively realizing the inflow and outflow of the damping medium; the flow channel structure can also be only a single flow channel, which realizes the inflow and outflow of the damping medium.

[0125] In some embodiments, considering the flow of liquid, reference Figure 1 、 Figures 3 to 5 As shown, the flow channel structure includes a first flow channel 170a and a second flow channel 170b.

[0126] The first flow channel 170a is used for allowing the damping medium to flow into or out of the accommodating space 170c; the second flow channel 170b is used for allowing the damping medium to flow out or into the accommodating space 170c; the first flow channel 170a and the second flow channel 170b are independently provided.

[0127] With this solution, through the provision of the first flow channel 170a and the second flow channel 170b, when the suspension device 100 is subjected to external impact or vibration, the flow and deformation of the damping medium can absorb and disperse the energy, thereby reducing vibration and impact.

[0128] In some embodiments, reference Figure 1 、 Figures 3 to 5 As shown, at least a portion of the connecting assembly 170 is movably disposed in the movable space 132a, and the accommodating space 170c is communicated with the movable space 132a through the first flow channel 170a and / or the second flow channel 170b.

[0129] It can be understood that the active space 132a is also filled with damping medium.

[0130] For example, referring to Figure 1 、 Figures 3 to 5 As shown, in order to separate the main space 131a and the active space 132a, an upper sealing cover 161 is arranged between the main space 131a and the active space 132a, and a screw bearing 162 is provided in the middle of the upper sealing cover 161. The ball screw 142 passes through the screw bearing 162 and is rotationally connected with the upper sealing cover 161 through the screw bearing 162, that is, it is indirectly rotationally connected with the outer shell 130.

[0131] A lower sealing cover 163 is also provided below the active space 132a. The lower sealing cover 163 is used to close the bottom of the active space 132a. A through hole can also be provided in the center of the lower sealing cover 163 so that the connecting rod 172 can pass through the lower sealing cover 163. The connecting rod 172 and the lower sealing cover 163 can be sealed, and the active space 132a between the upper sealing end cover and the lower sealing cover 163 forms a shock absorber cavity to seal the liquid therein in the shock absorber cavity.

[0132] With this solution, the accommodating space 170c is communicated with the active space 132a through the first flow channel 170a and the second flow channel 170b, so that the damping medium in the accommodating space 170c and the active space 132a can flow between each other.

[0133] In some embodiments, reference Figure 1 、 Figures 3 to 5 As shown, the connection assembly 170 includes a partition 172a. The partition 172a is disposed in the active space 132a to divide the active space 132a into a first cavity 132b and a second cavity 132c. The accommodating space 170c is connected to the first cavity 132b via the first flow channel 170a, and the accommodating space 170c is connected to the second cavity 132c via the second flow channel 170b.

[0134] It can be understood that when the partition 172a moves up and down in the active space 132a, it will also be affected by the damping force of the liquid; there is also a connecting gap between the partition 172a and the inner wall of the accommodating space 170c, so that when the partition 172a moves in the active space 132a, the first cavity 132b and the second cavity 132c can also achieve damping and mutual flow through the connecting gap.

[0135] Illustratively, when the accommodating space 170c is compressed during the relative movement of the transmission member and the connecting assembly 170, the first chamber 132b is simultaneously compressed by the partition 172a; at this time, a portion of the damping medium in the first chamber 132b can also flow into the accommodating space 170c through the first flow channel 170a, and at the same time, the damping medium in the accommodating space 170c flows into the second chamber 132c through the second flow channel 170b.

[0136] When the accommodating space 170c increases during the relative movement of the transmission member and the connecting assembly 170, the second chamber 132c is simultaneously compressed by the partition 172a; at this time, the damping medium in the second chamber 132c flows into the accommodating space 170c through the second flow channel 170b, and at the same time, a part of the damping medium in the accommodating space 170c can also flow into the first chamber 132b through the first flow channel 170a.

[0137] By adopting such a solution, by setting the first cavity 132b and the second cavity 132c in the accommodating space 170c and the movable space 132a to communicate with each other, when the connecting component 170 moves relative to the transmission member, the circulation of the damping medium can be realized to ensure a stable vibration reduction effect.

[0138] More specifically, the connection assembly 170 and the housing 130 of the present application are designed to be similar to a shock absorber structure.

[0139] In some embodiments, the movable space 132a between the upper sealing cover 161 and the lower sealing cover 163 can be independently used as a vibration damper, such as a passive vibration damper, a magnetorheological vibration damper, etc.

[0140] In some embodiments, reference Figure 1 、 Figures 3 to 5 As shown, there is a gap between the transmission member and the connecting assembly 170, and the first flow channel 170a is at least partially formed by the gap.

[0141] As a specific solution, refer to Figure 1 、 Figures 3 to 5 As shown, the first flow channel 170 a is at least formed by the gap between the transmission member and the connecting rod 172 and the gap between the transmission member and the ball nut 173 .

[0142] It can be understood that the gap between the transmission member and the connecting rod 172 can be the gap between the outer wall of the transmission member and the inner side wall of the connecting rod 172 forming the movable space 132a; the gap between the transmission member and the ball nut 173 can be the ball movable gap.

[0143] In some embodiments, reference Figure 1 、 Figures 3 to 5 As shown, the connection component 170 has: an interlayer space 172b, a first through hole 172c and a second through hole 172d.

[0144] The interlayer space 172b is arranged to extend axially along the central axis C1; the first through hole 172c is connected between the interlayer space 172b and the accommodating space 170c; the second through hole 172d is connected between the interlayer space 172b and the second cavity 132c; the second flow channel 170b is at least partially composed of the first through hole 172c, the interlayer space 172b and the second through hole 172d.

[0145] It will be appreciated that interlayer space 172b, first through hole 172c, and second through hole 172d are all formed in connecting rod 172. Specifically, interlayer space 172b is a chamber formed within connecting rod 172. First through hole 172c communicates with one end of interlayer space 172b, and second through hole 172d communicates with the other end of interlayer space 172b. Interlayer space 172b can extend axially in a circular or spiral shape, and the specific shape is not limited and can be selected based on actual needs.

[0146] In some specific embodiments, the connecting rod 172 includes a rod body (not shown) and a sleeve (not shown), the sleeve is mounted on the outside of the rod body, wherein the rod body forms a receiving space 170c, and an interlayer space 172b is formed between the rod body and the sleeve.

[0147] Of course, in other specific implementations, the interlayer space 172b can also be integrally formed inside the connecting rod.

[0148] By adopting such a solution, the damping medium is transmitted through the provision of the interlayer space 172b, without the need for additional pipelines, thereby optimizing the spatial layout.

[0149] In order to better achieve the shock absorption effect, in some embodiments, refer to Figures 1 to 5 As shown, the suspension device 100 further includes a spring seat 182 and a shock absorbing spring 181 .

[0150] The spring seat 182 is fixedly connected to the outer periphery of the connecting assembly 170; one end of the shock-absorbing spring 181 is coupled to the spring seat 182, and the other end is coupled to the housing 130, and in the axial direction of the central axis, the shock-absorbing spring 181 is arranged between the housing 130 and the spring seat 182, and the shock-absorbing spring 181 cushions the external impact on the connecting assembly 170.

[0151] By adopting such a solution, the shock-absorbing spring 181 is provided for the steady-state operation of the vehicle 10 , thereby supporting the body of the vehicle 10 and providing a certain buffering effect.

[0152] As a specific solution, spring seat 182 is sleeved on the outside of connecting rod 172 and is fixedly connected to connecting rod 172. The function of spring seat 182 is to provide an abutment surface for shock-absorbing spring 181, thereby transmitting the elastic force of shock-absorbing spring 181 to connecting rod 172. The upper end of shock-absorbing spring 181 abuts the lower end of housing 130, which acts to buffer high-frequency excitation from the road surface and support the vehicle body.

[0153] In some embodiments, the shock absorbing spring 181 may be a coil spring that is sleeved around the extension portion 132 of the housing 130 and the periphery of the connecting rod 172. More specifically, the extension portion 132 may be configured to have a cylindrical outer wall; the inner diameter of the coil spring is greater than the outer diameter of the outer wall of the extension portion 132.

[0154] In some embodiments, the shock absorbing spring 181 may be an air spring to achieve a faster vehicle height increase and maintain the height.

[0155] In another embodiment, the shock absorbing spring 181 may also be a combination of a coil spring and an air spring.

[0156] In some embodiments, reference Figures 1 to 5 As shown, the damping spring 181 is located between the prime mover 120 and the spring seat 182 in the axial direction of the central axis C1.

[0157] By adopting such a solution, the driving member of the present application is a sprung mass, and the vibration acceleration is small, which is beneficial to the stability of the vehicle 10.

[0158] To further prevent dust from entering the active space 132a, in some embodiments, refer to Figures 1 to 5 As shown, the suspension device 100 further includes a dust cover 183 .

[0159] At least a portion of the connecting assembly 170 is movably disposed within the housing 130, with one end extending out of the housing 130. A dust cover 183 is disposed over at least a portion of the housing 130 and at least a portion of the outer periphery of the connecting assembly 170. This prevents dust from clogging the sliding connection between the connecting rod 172 and the lower sealing cover 163, thereby preventing the movement of the connecting assembly 170 from being affected.

[0160] This application exemplarily describes Figure 2 The working process of the suspension device 100 of the embodiment shown is as follows:

[0161] When the prime mover 120 (motor) is powered off, the rotor 123 has no locking force, and the up and down vibrations of the wheel are buffered by the shock-absorbing spring 181. At this time, the ball screw 142 has no damping force.

[0162] When the motor is powered on, the follower 145 drives the ball screw 142 to rotate, and the ball screw 142 drives the ball nut 173 to move up and down, that is, pushes the connecting assembly 170 to move up and down, thereby lifting the vehicle body.

[0163] This application exemplarily describes Figure 3 The working process of the suspension device 100 of the embodiment shown is as follows:

[0164] When the prime mover 120 (motor) is powered off, the rotor 123 has no locking force, and the up and down vibrations of the wheel are buffered by the partition 172a at the upper end of the connecting assembly 170, the damping medium and the shock-absorbing spring 181. At this time, the ball screw 142 has no damping force.

[0165] When the motor is powered on, the follower 145 drives the ball screw 142 to rotate, and the ball screw 142 drives the ball nut 173 to move up and down, that is, pushes the connecting assembly 170 to move up and down, thereby lifting the vehicle body.

[0166] According to the second aspect of this application, referring to Figure 7As shown, a vehicle 10 is provided, which includes the above-mentioned suspension device 100. The vehicle 10 has all the beneficial effects of the above-mentioned suspension device 100, which will not be described in detail in this application.

[0167] The vehicle 10 may be a fuel vehicle 10 , a plug-in hybrid vehicle 10 , or a new energy vehicle 10 , etc., and this application does not make any specific limitation thereto.

[0168] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0169] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0170] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0171] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to 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 are still within the scope of the technical solution of the present application.

Claims

1. A suspension device (100), characterized in that: include: A prime mover (120) for providing driving force; a connecting assembly (170) adapted to connect to a wheel; a transmission member capable of rotating relative to the connecting assembly (170) about a central axis (C1), so that the prime mover (120) drives the connecting assembly (170) to move axially relative to the transmission member through the transmission member; Wherein, the connecting assembly (170) is provided with an accommodating space (170c) for accommodating at least a portion of the transmission member.

2. The suspension device (100) according to claim 1, characterized in that The transmission member and the connecting assembly (170) form a transmission coupling to drive the connecting assembly (170) to move axially along the central axis (C1) when the transmission member rotates.

3. The suspension device (100) according to claim 2, characterized in that The transmission member has a first thread structure, and the connecting assembly (170) has a second thread structure that matches the first thread structure, so that the transmission member can drive the connecting assembly (170) to move axially when it rotates.

4. The suspension device (100) according to claim 3, characterized in that At least a portion of the transmission member is configured as a ball screw (142); the connection assembly (170) includes: A connecting rod (172) is provided with an accommodating space (170c) for accommodating at least a portion of the ball screw (142); a ball nut (173) connected to the ball screw (142) and moving in the axial direction when the ball screw (142) rotates; Wherein, the ball nut (173) is fixedly connected to the connecting rod (172).

5. The suspension device (100) according to any one of claims 1 to 4, characterized in that: The suspension device (100) further comprises: A transmission belt (141) is used to realize transmission between the prime mover (120) and the transmission member.

6. The suspension device (100) according to claim 5, characterized in that The suspension device (100) further comprises: An active member (144) is connected to the output shaft of the prime mover (120) to prevent rotation; A driven member (145) is connected to the transmission member to prevent rotation; The transmission belt (141) is respectively fitted onto the active member (144) and the driven member (145) to transmit the power of the active member (144) to the driven member (145).

7. The suspension device (100) according to claim 6, characterized in that The transmission belt (141) is constructed to have a belt-shaped body and belt teeth attached to the belt-shaped body.

8. The suspension device (100) according to claim 7, characterized in that The active member (144) and the driven member (145) have transmission teeth that cooperate with the belt teeth.

9. The suspension device (100) according to any one of claims 1 to 4, characterized in that: The suspension device (100) further comprises: A housing (130) having an activity space (132a); There is a gap between the transmission member and the connecting assembly (170), so that the accommodating space (170c) can communicate with the movable space (132a) of the connecting assembly (170) through the gap.

10. The suspension device (100) according to any one of claims 1 to 4, characterized in that: The accommodating space (170c) is filled with a damping medium so that the connecting assembly (170) and the transmission member are subjected to a damping force of the damping medium when relative movement occurs.

11. The suspension device (100) according to claim 10, characterized in that The connection assembly (170) comprises: A flow channel structure is used for allowing the damping medium to flow into and / or out of the accommodating space (170c) when the connecting assembly (170) and the transmission member move relative to each other.

12. The suspension device (100) according to claim 11, characterized in that The flow channel structure includes: a first flow channel (170a) for allowing a damping medium to flow into or out of the accommodation space (170c); a second flow channel (170b) for allowing the damping medium to flow out of or into the accommodating space (170c); Wherein, the first flow channel (170a) and the second flow channel (170b) are arranged independently of each other.

13. The suspension device (100) according to claim 12, characterized in that The suspension device (100) further comprises: A housing (130) having an activity space (132a); At least part of the connecting component (170) is movably arranged in the movable space (132a), and the accommodating space (170c) is connected to the movable space (132a) via the first flow channel (170a) and / or the second flow channel (170b).

14. The suspension device (100) according to claim 13, characterized in that The connection assembly (170) comprises: a partition (172a) disposed in the activity space (132a) to divide the activity space (132a) into a first cavity (132b) and a second cavity (132c); The accommodating space (170c) is connected to the first cavity (132b) via a first flow channel (170a), and the accommodating space (170c) is connected to the second cavity (132c) via a second flow channel (170b).

15. The suspension device (100) according to claim 12, characterized in that There is a gap between the transmission member and the connecting assembly (170), and the first flow channel (170a) is at least partially formed by the gap.

16. The suspension device (100) according to claim 15, characterized in that At least a portion of the transmission member is configured as a ball screw (142); the connection assembly (170) includes: Connecting rod (172); a ball nut (173) connected to the ball screw (142) to move axially when the ball screw (142) rotates, and the ball nut (173) is fixedly connected to the connecting rod (172); The first flow channel (170a) is at least formed by the gap between the transmission member and the connecting rod (172) and the gap between the transmission member and the ball nut (173).

17. The suspension device (100) according to claim 16, characterized in that The connection assembly (170) comprises: An interlayer space (172b) is provided extending axially along the central axis (C1); a first through hole (172c) communicating between the interlayer space (172b) and the accommodation space (170c); a second through hole (172d) communicating between the interlayer space (172b) and the second cavity (132c); The second flow channel (170b) is at least partially composed of the first through hole (172c), the interlayer space (172b) and the second through hole (172d).

18. The suspension device (100) according to any one of claims 1 to 4, characterized in that: The suspension device (100) further comprises: The housing (130) has an activity space (132a), and at least a portion of the connecting component (170) is movably disposed in the activity space (132a); a spring seat (182) fixedly connected to the outer periphery of the connecting assembly (170); a shock-absorbing spring (181) for buffering external impacts on the connecting assembly (170); Wherein, in the axial direction of the central axis, the shock-absorbing spring (181) is arranged between the housing (130) and the spring seat (182).

19. The suspension device (100) according to claim 18, characterized in that The shock absorbing spring (181) includes at least one of a coil spring and an air spring.

20. The suspension device (100) according to any one of claims 1 to 4, characterized in that: The suspension device (100) further comprises: A housing (130), wherein at least a portion of the connecting component (170) is movably disposed inside the housing (130) and one end of the connecting component (170) extends out of the housing (130); A dust cover (183) is sleeved on at least a portion of the housing (130) and at least a portion of the outer periphery of the connecting assembly (170).

21. A vehicle (10), characterized in that A suspension device (100) comprising any one of claims 1 to 20.

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