Shock absorber, suspension assembly with same and vehicle

Abstract

The utility model discloses a shock absorber, a suspension assembly with the shock absorber and a vehicle. The shock absorber comprises a first component, a second component and a third component, one of the first component and the second component is suitable for being connected with a vehicle body of the vehicle, and the other one of the first component and the second component is suitable for being connected with a wheel of the vehicle; the linear motor comprises a primary motor and a secondary motor, one of the primary motor and the secondary motor is arranged on the first component, the other of the primary motor and the secondary motor is arranged on the second component, the first component can move in the first direction relative to the second component, and an air gap is formed between the primary motor and the secondary motor; and the projection of the guide structure at least covers the projection of the air gap in the first direction, and the guide structure is used for guide fit between the first component and the second component. According to the shock absorber, the linear motor can operate more stably and reliably, and the shock absorber operates more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a shock absorber, a suspension assembly with the same and a vehicle. Background Art

[0002] In the related art, during the operation of a shock absorber with a linear motor structure, due to the mutual attraction between the motor primary and the motor secondary in the linear motor, when there is external vibration or an installation error between the motor primary and the motor secondary, during the axial sliding of the motor primary or the motor secondary fixed on the center rod, the motor primary or the motor secondary is prone to radial deviation, resulting in problems such as eccentric wear of the linear motor and poor operating stability of the shock absorber. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a shock absorber which can have better structural stiffness and strength during operation, well reduce the deviation of the linear motor during operation, enable the linear motor to operate more stably, and further improve the operating stability of the shock absorber.

[0004] The utility model also provides a suspension assembly with the above shock absorber.

[0005] The utility model also provides a vehicle with the above suspension assembly.

[0006] The shock absorber according to the first aspect of the utility model includes: a first component; a second component, one of the first component and the second component is adapted to be connected to the vehicle body, and the other of the first component and the second component is adapted to be connected to the vehicle wheel; a linear motor, the linear motor includes: a motor primary and a motor secondary, one of the motor primary and the motor secondary is arranged on the first component, and the other of the motor primary and the motor secondary is arranged on the second component, the first component can move relative to the second component along a first direction, and an air gap is formed between the motor primary and the motor secondary; a guiding structure, along the first direction, the projection of the guiding structure at least covers the projection of the air gap, and the guiding structure is used for guiding and matching between the first component and the second component.

[0007] According to the shock absorber of the present utility model, by providing a guiding structure, the guiding structure guides and cooperates with the relative movement of the first component and the second component along the first direction, so that when the linear motor provided on the first component and the second component operates, the motor primary and the motor secondary of the linear motor can relatively move stably and reliably along the first direction, which greatly reduces the probability of problems such as eccentric wear of the linear motor, thereby enabling the linear motor to operate more stably and reliably, and making the shock absorber operate more stably.

[0008] In some embodiments of the present utility model, along the first direction, the projection of the guiding structure and the projection of the motor primary at least partially overlap.

[0009] In some embodiments of the present utility model, the first component includes a first cylinder body, the second component includes a rod body, a partial structure of the rod body extends into the first cylinder body and one end of the rod body extends out of the first cylinder body, and the motor primary and the guiding structure are both provided on the rod body.

[0010] In an embodiment of the present utility model, the motor secondary is provided on the inner wall of the first cylinder body, and the guiding structure is adapted to be in sliding contact with the motor secondary.

[0011] In an embodiment of the present utility model, the motor primary has a first primary end and a second primary end along the first direction, the motor secondary has a first secondary end and a second secondary end along the first direction, and the direction from the first primary end to the second primary end is the same as the direction from the first secondary end to the second secondary end; the distance from the first primary end to the first secondary end is greater than the maximum stroke of the first primary end moving towards the first secondary end, and / or; the distance from the second primary end to the second secondary end is greater than the maximum stroke of the second primary end moving towards the second secondary end.

[0012] In some examples of the present utility model, the motor primary has a first primary end and a second primary end along the first direction, the motor secondary has a first secondary end and a second secondary end along the first direction, and the direction from the first primary end to the second primary end is the same as the direction from the first secondary end to the second secondary end; the guiding structure is provided on the side of the first primary end away from the second primary end, and the distance from the end face on the side of the guiding structure away from the second primary end to the first secondary end is greater than the maximum stroke of the first primary end moving towards the first secondary end.

[0013] In some examples of the present utility model, the motor primary has a first primary end and a second primary end along the first direction, the motor secondary has a first secondary end and a second secondary end along the first direction, and the direction from the first primary end to the second primary end is the same as the direction from the first secondary end to the second secondary end; the guiding structure is arranged on a side of the second primary end away from the first primary end, and the distance from the end face of the guiding structure away from the first primary end to the second secondary end is greater than the maximum stroke of the second primary end moving towards the second secondary end.

[0014] In an embodiment of the present utility model, the guiding structure is configured as a bearing.

[0015] In some examples of the present utility model, the guiding structure is configured to be arranged adjacent to the motor primary.

[0016] In an example of the present utility model, the shock absorber further includes a fixing mechanism for fixing at least one of the motor primary and the guiding structure.

[0017] In some specific embodiments of the present utility model, the fixing mechanism is used to fix the motor primary and the guiding structure.

[0018] In a specific embodiment of the present utility model, the fixing mechanism includes a boss formed on the rod body and a fixing member connected to the rod body, and the motor primary and the guiding structure are arranged between the fixing member and the boss.

[0019] In some specific examples of the present utility model, the fixing member is a bolt, and the bolt is threadedly connected to the rod body.

[0020] In an embodiment of the present utility model, a first limiting portion is formed on the rod body, the first limiting portion is in limiting cooperation with one end of the first cylinder body, and one end of the rod body is formed as a second limiting portion for cooperating with the other end of the first cylinder body.

[0021] In an embodiment of the present utility model, the second component further includes a second cylinder body fixedly connected to the rod body, one end of the second cylinder body is open, and the second cylinder body is sleeved outside the first cylinder body and is in sliding cooperation with the first cylinder body.

[0022] In some examples of the present utility model, the bottom wall of the second cylinder body is formed as a limiting portion, and the distance from one end of the first cylinder body close to the bottom wall of the second cylinder body to the bottom wall of the second cylinder body is greater than the maximum distance of the first cylinder body moving towards the bottom wall of the second cylinder body.

[0023] In some examples of the present utility model, in the first direction, the length of the overlapping portion of the first cylinder and the second cylinder is formed as a sliding fit length, and the ratio of the sliding fit length to the length of the first cylinder can be greater than 0.5, and the ratio of the sliding fit length to the length of the second cylinder can be greater than 0.5.

[0024] In some examples of the present utility model, one end of the first cylinder located inside the second cylinder is open.

[0025] In some examples of the present utility model, the shock absorber further includes a buffer member, and the buffer member is disposed at the second limiting portion.

[0026] In some examples of the present utility model, a first support plate is provided on the outer peripheral surface of the first cylinder. The shock absorber further includes: a second support plate and an elastic member. The second support plate is mounted on the rod body and located outside the second cylinder. The elastic member is sleeved outside the second cylinder, and two ends of the elastic member are respectively connected to the first support plate and the second support plate.

[0027] In an embodiment of the present utility model, the shock absorber further includes a connecting arm, and the connecting arm and the first cylinder are an integral part, and the connecting arm is used to be connected to a wheel of the vehicle.

[0028] The suspension assembly according to the second aspect of the present utility model includes the shock absorber according to the first aspect of the present utility model.

[0029] According to the suspension assembly of the present utility model, by providing the shock absorber of the first aspect above, the shock absorber is provided with a guiding structure, and the guiding structure guides and cooperates with the relative movement of the first component and the second component in the first direction, so that when the linear motor provided on the first component and the second component operates, the motor primary and the motor secondary of the linear motor can move relatively stably and reliably in the first direction, which well reduces the probability of problems such as eccentric wear of the linear motor, thereby enabling the linear motor to operate more stably and reliably and making the shock absorber operate more stably.

[0030] The vehicle according to the third aspect of the present utility model includes: a vehicle body and wheels; the suspension assembly according to the second aspect of the present utility model, and the shock absorber is connected between the vehicle body and the wheels.

[0031] For the vehicle according to the present utility model, by providing the suspension assembly of the second aspect above, and by providing a guiding structure, the guiding structure guides and cooperates with the relative movement of the first component and the second component in the first direction, so that when the linear motors provided on the first component and the second component are operating, the motor primary and the motor secondary of the linear motors can move relative to each other stably and reliably in the first direction, which well reduces the probability of problems such as eccentric wear of the linear motors, thereby enabling the linear motors to operate more stably and reliably, and making the shock absorber operate more stably.

[0032] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a shock absorber according to an embodiment of the present utility model;

[0034] Figure 2 is a schematic diagram of the shock absorber from another angle according to an embodiment of the present utility model;

[0035] Figure 3 is Figure 2 a cross-sectional view taken along A-A shown in

[0036] Figure 4 is Figure 3 a cross-sectional view taken along B-B shown in

[0037] Figure 5 is Figure 3 a partially enlarged schematic diagram at C shown in

[0038] Figure 6 is a schematic diagram of the shock absorber from yet another angle according to an embodiment of the present utility model.

[0039] REFERENCE SIGNS:

[0040] 10, first cylinder; 11, first end; 12, second end;

[0041] 20, second cylinder; 21, closed end;

[0042] 30, linear motor; 31, motor primary; 311, first primary end; 312, second primary end; 32, motor secondary; 321, first secondary end; 322, second secondary end;

[0043] 40, rod body; 41, boss; 50, guiding structure; 60, elastic member; 70, connecting arm; 80, buffer member;

[0044] 91, first support plate; 92, second support plate; 93, fixing member; 94, fastening member;

[0045] 100. Shock absorber Specific implementation manners

[0046] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0047] First, a vehicle according to an embodiment of the third aspect of the present utility model will be briefly described.

[0048] The vehicle according to an embodiment of the present utility model includes a vehicle body, wheels and a suspension assembly. The suspension assembly is provided with a shock absorber 100, and the shock absorber 100 is connected to the vehicle body and the wheels.

[0049] Next, reference is made to Figures 1 - 6 Describe the shock absorber 100 according to an embodiment of the first aspect of the present utility model.

[0050] As Figure 3 shown, the shock absorber 100 according to an embodiment of the first aspect of the present utility model includes: a first component, a second component, a linear motor 30 and a guiding structure 50.

[0051] Specifically, one of the first component and the second component is adapted to be connected to the vehicle body of the vehicle, and the other of the first component and the second component is adapted to be connected to the wheels of the vehicle; the linear motor 30 includes: a motor primary 31 and a motor secondary 32, one of the motor primary 31 and the motor secondary 32 is disposed on the first component, and the other of the motor primary 31 and the motor secondary 32 is disposed on the second component. The first component can move relative to the second component along a first direction (such as the up and down direction as Figure 3 shown), and an air gap is formed between the motor primary 31 and the motor secondary 32; along the first direction, the projection of the guiding structure 50 at least covers the projection of the air gap, and the guiding structure 50 is used for guiding and cooperating between the first component and the second component.

[0052] In this embodiment, a first component and a second component are provided, including a motor primary 31 and a motor secondary 32. The motor primary 31 can be disposed on the first component or the second component, and the motor secondary 32 can be correspondingly disposed on the second component or the first component. When the shock absorber 100 operates, the linear motor 30 operates, and the motor primary 31 and the motor secondary 32 of the linear motor 30 move relative to each other in the first direction, so that the first component can move relative to the second component in the first direction, so that the shock absorber 100 can adjust the distance between the vehicle body and the wheel as needed to offset the bumps and vibrations of the road surface. An air gap is formed between the motor primary 31 and the motor secondary 32, which can meet the operating requirements of the linear motor 30, so that the linear motor 30 can operate stably and well, and thus the shock absorber 100 can operate stably.

[0053] In this embodiment, a guiding structure 50 is provided. The guiding structure 50 is used for guiding and matching between the first component and the second component. When the first component and the second component move relative to each other in the first direction, the first component and the second component can well resist the influence of the magnetic deviation force between the motor primary 31 and the motor secondary 32 under the action of the guiding structure 50, so that a stable air gap is formed between the motor primary 31 and the motor secondary 32, greatly reducing the probability that the first component and the second component are offset under the influence of the magnetic deviation force and then causing friction and collision between the motor primary 31 and the motor secondary 32, so that problems such as eccentric wear of the linear motor 30 can be well reduced, and the linear motor 30 can operate more stably and reliably, and further the shock absorber 100 operates more stably.

[0054] In this embodiment, along the first direction, the projection of the guiding structure 50 at least covers the projection of the air gap. When the shock absorber 100 operates and the motor primary 31 and the motor secondary 32 move relative to each other in the first direction, the guiding structure 50 can always provide a structural support effect for the motor primary 31 and the motor secondary 32, so that the motor primary 31 and the motor secondary 32 can maintain a stable structural state when the vehicle vibrates, etc., so that the linear motor 30 can operate stably and reliably.

[0055] For the shock absorber 100 according to the embodiment of the present invention, by providing the guiding structure 50, the guiding structure 50 guides and matches the relative movement of the first component and the second component in the first direction, so that when the linear motor 30 disposed on the first component and the second component operates, the motor primary 31 and the motor secondary 32 of the linear motor 30 can move relative to each other stably and reliably in the first direction, well reducing the probability of problems such as eccentric wear of the linear motor 30, so that the linear motor 30 can operate more stably and reliably, and the shock absorber 100 operates more stably.

[0056] In some embodiments of the present invention, refer to Figure 3As shown, along the first direction, the projection of the guiding structure 50 coincides at least partially with the projection of the motor primary 31.

[0057] In this embodiment, along the first direction, the projection of the guiding structure 50 is set to coincide at least partially with the projection of the motor primary 31, so that the guiding structure 50 can play a certain protective role for the motor primary 31 during arrangement, enabling the motor primary 31 and the motor secondary 32 to form a more stable air gap state, and making the linear motor 30 operate more stably.

[0058] In some embodiments of the present invention, referring to Figure 3 As shown, the first component includes the first cylinder 10, the second component includes the rod 40, a part of the structure of the rod 40 extends into the first cylinder 10 and one end of the rod 40 extends out of the first cylinder 10, and the motor primary 31 and the guiding structure 50 are both arranged on the rod 40.

[0059] In this embodiment, the first component includes the first cylinder 10, the second component includes the rod 40, and the motor primary 31 and the guiding structure 50 are both arranged on the rod 40. When the shock absorber 100 operates, the linear motor 30 runs, and the motor primary 31 and the motor secondary 32 move relative to each other along the first direction, thereby causing the first cylinder 10 and the rod 40 to move relative to each other along the first direction, and further enabling the shock absorber 100 to perform active shock absorption operations.

[0060] In this embodiment, the guiding structure 50 is arranged on the rod 40, so that the relative position between the guiding structure 50 and the motor primary 31 can remain unchanged during the movement of the rod 40, thereby enabling the guiding structure 50 to play a stable and reliable limiting and supporting role for the motor primary 31 and the motor secondary 32 in the radial direction of the rod 40, making the air gap formed between the motor primary 31 and the motor secondary 32 more stable, and further making the linear motor 30 operate more stably and the shock absorber 100 operate more stably and reliably.

[0061] In an embodiment of the present invention, referring to Figure 3 As shown, the motor secondary 32 can be arranged on the inner wall of the first cylinder 10, and the guiding structure 50 is adapted to be in sliding contact with the motor secondary 32.

[0062] When the shock absorber 100 operates, the guiding structure 50 slides along the first cylinder 10, enabling the guiding structure 50 to form a sliding pair with the first cylinder 10. Specifically, the guiding structure 50 can slide along the axial direction of the first cylinder 10, that is, the guiding structure 50 can slide along the first cylinder 10 in the first direction, thereby being able to cooperate with the first cylinder 10 to play a good guiding role for the movement of the rod 40, enabling the rod 40 to move stably and reliably along the first direction, and making the relative movement between the motor primary 31 and the motor secondary 32 more stable when moving relative to each other along the first direction.

[0063] The guiding structure 50 can strengthen the structure of the rod body 40 and play a good guiding role in the sliding of the rod body 40 and the first cylinder 10, making the overall structure of the rod body 40 and the guiding structure 50 have higher stiffness and strength in the radial direction of the first cylinder 10. The first cylinder 10 can cooperate with the guiding structure 50 to play a stable and good limiting and positioning role for the rod body 40 in the radial direction, so that when the motor primary 31 on the rod body 40 is assembled with the motor secondary 32 on the first cylinder 10, the positioning is more accurate. Thus, the radial force of the linear motor 30 on the rod body 40 during the movement along the first direction is more uniform and stable. The cooperation between the rod body 40 and the guiding structure 50 can better resist the radial force generated during the operation of the linear motor 30, thereby reducing the radial offset of the motor primary 31 and the motor secondary 32 during the operation process, enabling the linear motor 30 to operate stably and well, and thus making the damper 100 operate more stably.

[0064] In this embodiment, the motor secondary 32 is arranged on the inner wall of the first cylinder 10, with a simple structure, which is convenient for the arrangement of the motor primary 31 and the motor secondary 32. The guiding structure 50 is in sliding contact with the motor secondary 32, which can meet the movement requirements when the rod body 40 and the first cylinder 10 move relative to each other along the first direction. The guiding structure 50 can stably form a limit support for the motor secondary 32 and the rod body 40 in the radial direction of the rod body 40, and can well prevent the motor primary 31 on the rod body 40 from deflecting radially towards the motor secondary 32, making the air gap formed between the motor primary 31 and the motor secondary 32 stable, so that the damper 100 can operate stably.

[0065] In an embodiment of the present utility model, as Figure 3 shown, the motor primary 31 can have a first primary end 311 and a second primary end 312 along the first direction, and the motor secondary 32 has a first secondary end 321 and a second secondary end 322 along the first direction. The direction from the first primary end 311 to the second primary end 312 is the same as the direction from the first secondary end 321 to the second secondary end 322; the distance from the first primary end 311 to the first secondary end 321 is greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321.

[0066] In this embodiment, the motor primary 31 has a first primary end 311 and a second primary end 312, and the motor secondary 32 has a first secondary end 321 and a second secondary end 322. The first primary end 311 and the first secondary end 321 are located on one side of the linear motor along the first direction, and the second primary end 312 and the second secondary end 322 are located on the other side of the linear motor 30 along the first direction.

[0067] In this embodiment, the distance from the first primary end 311 to the first secondary end 321 is set to be greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321. When the first primary end 311 moves relative to the motor secondary 32 towards the first secondary end 321 along the first direction, the first primary end 311 can always be within the extension range of the motor secondary 32 along the first direction, thereby avoiding the situation that the first primary end 311 exceeds the motor secondary 32 and causing poor operation of the linear motor 30, and enabling the motor primary 31 and the motor secondary 32 to cooperate and operate stably and reliably.

[0068] In an embodiment of the present utility model, as Figure 3 shown, the motor primary 31 may have a first primary end 311 and a second primary end 312 along the first direction, the motor secondary 32 has a first secondary end 321 and a second secondary end 322 along the first direction, and the direction from the first primary end 311 to the second primary end 312 is the same as the direction from the first secondary end 321 to the second secondary end 322; the distance from the second primary end 312 to the second secondary end 322 is greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322.

[0069] In this embodiment, the distance from the second primary end 312 to the second secondary end 322 is set to be greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322. When the second primary end 312 moves relative to the motor secondary 32 towards the second secondary end 322 along the first direction, the second primary end 312 can always be within the extension range of the motor secondary 32 along the first direction, thereby avoiding the situation that the second primary end 312 exceeds the motor secondary 32 and causing poor operation of the linear motor 30, and enabling the motor primary 31 and the motor secondary 32 to cooperate and operate stably and reliably.

[0070] In an embodiment of the present utility model, as Figure 3 shown, the motor primary 31 may have a first primary end 311 and a second primary end 312 along the first direction, the motor secondary 32 has a first secondary end 321 and a second secondary end 322 along the first direction, and the direction from the first primary end 311 to the second primary end 312 is the same as the direction from the first secondary end 321 to the second secondary end 322; the distance from the first primary end 311 to the first secondary end 321 is greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321; the distance from the second primary end 312 to the second secondary end 322 is greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322.

[0071] In this embodiment, the distance from the first primary end 311 to the first secondary end 321 is set to be greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321, and the distance from the second primary end 312 to the second secondary end 322 is set to be greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322. When the linear motor 30 operates, when the motor primary 31 and the motor secondary 32 move relative to each other in the first direction, the motor primary 31 can always stably cooperate with the motor secondary 32 within the extension range of the motor secondary 32 in the first direction, so that the linear motor 30 operates more stably and reliably, and the linear motor 30 can operate stably and well under different working conditions of the vehicle. For example Figure 3 As shown, in the figure, d2 represents the distance between the first primary end 311 and the first secondary end 321, and the distance d2 can be greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321.

[0072] In some examples of the present utility model, such as Figure 3 As shown, the motor primary 31 can have a first primary end 311 and a second primary end 312 along the first direction, the motor secondary 32 has a first secondary end 321 and a second secondary end 322 along the first direction, and the direction from the first primary end 311 to the second primary end 312 is the same as the direction from the first secondary end 321 to the second secondary end 322; the guiding structure 50 can be arranged on the side of the first primary end 311 away from the second primary end 312, and the distance from the end face of the guiding structure 50 away from the second primary end 312 to the first secondary end 321 is greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321.

[0073] In this embodiment, the guiding structure 50 is arranged at the first primary end 311, and the distance between the end face of the guiding structure 50 away from the second primary end 312 and the first secondary end 321 is greater than the maximum stroke of the first primary end 311 moving towards the first secondary end 321. When the shock absorber 100 operates, when the first primary end 311 moves towards the first secondary end 321 along the first direction, the guiding structure 50 can always be within the extension range of the motor secondary 32 in the first direction, so that the guiding structure 50 can stably and reliably play a role in limiting and supporting the motor primary 31 and the motor secondary 32 in the radial direction of the rod body 40, so that the motor primary 31 and the motor secondary 32 operate stably and well, and the shock absorber 100 can operate more stably.

[0074] In some examples of the present utility model, such as Figure 3As shown, the motor primary 31 may have a first primary end 311 and a second primary end 312 along a first direction, the motor secondary 32 has a first secondary end 321 and a second secondary end 322 along the first direction, and the direction from the first primary end 311 to the second primary end 312 is the same as the direction from the first secondary end 321 to the second secondary end 322; the guiding structure 50 may be arranged on the side of the second primary end 312 away from the first primary end 311, and the distance from the end face of the guiding structure 50 away from the first primary end 311 to the second secondary end 322 is greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322.

[0075] In this embodiment, the guiding structure 50 is arranged at the second primary end 312, and the distance between the end face of the guiding structure 50 away from the first primary end 311 and the second secondary end 322 is greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322. When the shock absorber 100 operates, when the second primary end 312 moves towards the second secondary end 322 along the first direction, the guiding structure 50 can always be within the extension range of the motor secondary 32 in the first direction, so that the guiding structure 50 can stably and reliably play a role in limiting and supporting the motor primary 31 and the motor secondary 32 in the radial direction of the rod body 40, so that the motor primary 31 and the motor secondary 32 can operate stably and well, and the shock absorber 100 can operate more stably. For example Figure 3 As shown, in the figure, d3 represents the distance between the end face of the guiding structure 50 away from the first primary end 311 and the second secondary end 322, and the distance d3 can be greater than the maximum stroke of the second primary end 312 moving towards the second secondary end 322.

[0076] In an embodiment of the present invention, the guiding structure 50 can be configured as a bearing. In this way, the guiding structure 50 can be in rolling cooperation with the motor secondary 32, thereby reducing the friction between the guiding structure 50 and the motor secondary 32 and making the relative movement between the guiding structure 50 and the motor secondary 32 smoother.

[0077] In some examples of the present invention, refer to Figure 3 As shown, the shock absorber 100 may further include a stop plate, the stop plate is fixed on the rod body 40, and the bearing is arranged on the periphery of the stop plate and between the stop plate and the motor secondary 32.

[0078] In this embodiment, the stop plate is provided, which can facilitate the installation and fixation of the bearing on the rod body 40, enable the bearing to be stably matched with the motor secondary 32, the stop plate can play a good role in supporting and fixing the motor primary 31, and make the assembly of the guiding structure 50 and the motor primary 31 more convenient.

[0079] In some examples of the present invention, such as Figure 3As shown, the guiding structure 50 can be configured to be disposed adjacent to the motor primary 31.

[0080] In this embodiment, the guiding structure 50 is disposed adjacent to the motor primary 31, with a simple structure and a compact layout. The guiding structure 50 can provide a certain degree of protection to the motor primary 31 in the first direction, making the operation of the motor primary 31 more stable.

[0081] In an example of the present utility model, referring to Figure 3 As shown, the shock absorber 100 may further include a fixing mechanism for fixing at least one of the motor primary 31 and the guiding structure 50.

[0082] In this embodiment, the fixing mechanism is provided to fix at least one of the motor primary 31 and the guiding structure 50, enabling the motor primary 31 or the guiding structure 50 or both to be conveniently and reliably fixed to the rod body 40, thereby meeting the assembly and fixing requirements of the rod body 40 with the motor primary 31 and / or the guiding structure 50. The fixing mechanism can play a role in strengthening the structure to a certain extent, making the overall structural strength of the rod body 40 and the guiding structure 50 better, so that the motor primary 31 and the motor secondary 32 can operate more stably in cooperation. For example, the fixing mechanism can fix the motor primary 31, or it can fix the guiding structure 50, or it can fix the motor primary 31 and the motor secondary simultaneously.

[0083] In some specific embodiments of the present utility model, such as Figure 3 As shown, the fixing mechanism can be used to fix the motor primary 31 and the guiding structure 50.

[0084] In this embodiment, by fixing the motor primary 31 and the guiding structure 50 to the rod body 40 through the fixing mechanism, the assembly and fixing requirements of the rod body 40 with the motor primary 31 and the guiding structure 50 can be well met, enabling the motor primary 31 and the motor secondary 32 to have a more stable positional relationship, so that the air gap formed between the motor secondary 32 and the motor primary 31 is more stable, and further making the shock absorber 100 operate more stably.

[0085] In a specific embodiment of the present utility model, such as Figure 3 As shown, the fixing mechanism may include a boss 41 formed on the rod body 40 and a fixing member 93 connected to the rod body 40, and the motor primary 31 and the guiding structure 50 are disposed between the fixing member 93 and the boss 41.

[0086] In this embodiment, the fixing structure is composed of a boss 41 formed on the rod body 40 and a fixing member 93 fixed on the rod body 40. The structure is simple. When the motor primary 31, the guiding structure and the rod body 40 are assembled, the motor primary 31 and the guiding structure 50 can be assembled with the rod body 40 according to the assembly requirements, so that the motor primary 31 and the guiding structure 50 can be positioned and assembled with the rod body 40 under the limiting and fixing action of the boss 41. Then the fixing member 93 is assembled with the rod body 40, so that the motor primary 31 and the guiding structure 50 are stably and reliably fixed on the rod body 40 under the clamping and fixing action of the fixing member 93 and the boss 41.

[0087] In this embodiment, the motor primary 31 and the guiding structure 50 are arranged between the fixing member 93 and the boss 41, so that the cooperation between the fixing member 93 and the boss 41 can play a role in supporting, fixing and limiting the motor primary 31 and the guiding structure 50 in the first direction, so that the motor primary 31 and the guiding structure 50 can better maintain the relative position relationship with the rod body 40. Thus, after the rod body 40 is assembled with the first cylinder 10, the cooperation between the motor primary 31 and the motor secondary 32 is more stable and good.

[0088] In some specific examples of the present invention, the fixing member 93 can be a bolt, and the bolt is threadedly connected with the rod body 40. In this embodiment, the fixing member 93 is set as a bolt, which has a simple structure, convenient and reliable connection and fixation, and is convenient for the assembly and disassembly of the motor primary 31 and the guiding structure 50 on the rod body 40.

[0089] In an embodiment of the present invention, as Figure 3 shown, a first limiting portion can be formed on the rod body 40, and the first limiting portion is in limiting cooperation with one end of the first cylinder 10. One end of the rod body 40 is formed as a second limiting portion, and the second limiting portion is used for cooperating with the other end of the first cylinder 10.

[0090] In this embodiment, the first limiting portion is formed on the rod body 40 and the second limiting portion is formed at one end of the rod body 40. The first limiting portion is in limiting cooperation with one end of the first cylinder 10, and the second limiting portion cooperates with the other end of the first cylinder 10, which can play a good limiting role in the movement of the rod body 40 and the first cylinder 10 in the first direction, thus avoiding the situation of structural damage of the shock absorber 100 when the stroke of the rod body 40 and the first cylinder 10 moving away from or approaching each other in the first direction is too large. For example, when the stroke of the rod body 40 and the first cylinder 10 approaching each other in the first direction is too large, there is a possibility that the motor primary 31 collides with the bottom wall of the first cylinder 10. By setting the first limiting portion and the second limiting portion in this embodiment, the relative displacement between the rod body 40 and the first cylinder 10 can be well restricted, so that the moving distance between the rod body 40 and the first cylinder 10 is within the moving range during stable operation, so that the shock absorber 100 can operate stably and reliably.

[0091] In an embodiment of the present utility model, as Figure 3 shown, the second component may further include a second cylinder body 20. The second cylinder body 20 is fixedly connected to the rod body 40. One end of the second cylinder body 20 is open. The second cylinder body 20 is sleeved outside the first cylinder body 10 and is in sliding fit with the first cylinder body 10.

[0092] In this embodiment, the second cylinder body 20 is fixedly connected to the rod body 40 and is sleeved outside the first cylinder body 10. The second cylinder body 20 is in sliding fit with the first cylinder body 10, and the second cylinder body 20 is fixedly connected to the rod body 40. The structure is simple. The second cylinder body 20 can play a good role in structurally strengthening the rod body 40. The second cylinder body 20 is sleeved outside the first cylinder body 10, so that a stable and reliable sliding pair can be formed with the first cylinder body 10. When the rod body 40 moves in the first direction, the second cylinder body 20 can cooperate with the first cylinder body 10 to play a stable limiting and supporting role on the rod body 40 in the radial direction. When the rod body 40 and the first cylinder body 10 move relatively in the first direction, the rod body 40 can better resist the radial force generated during the operation of the linear motor 30, thereby reducing the radial offset of the motor primary 31 and the motor secondary 32 during operation, further improving the stability of the relative movement of the motor primary 31 and the motor secondary 32 in the first direction, and making the shock absorber 100 operate more stably.

[0093] In some examples of the present utility model, referring to Figure 3 shown, in the first direction, the length of the overlapping part of the first cylinder body 10 and the second cylinder body 20 is formed as the sliding fit length. The ratio of the sliding fit length to the length of the first cylinder body 10 may be greater than 0.5, and the ratio of the sliding fit length to the length of the second cylinder body 20 may be greater than 0.5.

[0094] In this embodiment, the overlapping part of the first cylinder body 10 and the second cylinder body 20 in the first direction is set as the sliding fit length. Here, the sliding fit length refers to the length of the overlapping part of the first cylinder body 10 and the second cylinder body 20 when in the initial position, that is, the length of the overlapping part when the shock absorber 100 is in the shutdown state.

[0095] It can be understood that when the shock absorber 100 is operating, the first cylinder body 10 and the second cylinder body 20 slide relatively in the first direction. The first cylinder body 10 moves away from or approaches the second cylinder body 20 in the first direction, making the overlapping part of the first cylinder body 10 and the second cylinder body 20 change continuously. When the overlapping part of the first cylinder body 10 and the second cylinder body 20 is small, the structural stiffness and strength of the sliding fit structure of the first cylinder body 10 and the second cylinder body 20 are poor, resulting in a decrease in the sliding stability of the second cylinder body 20 along the first cylinder body 10, and further a decrease in the operating stability of the rod body 40 and the first cylinder body 10.

[0096] In this embodiment, the ratio of the sliding fit length to the length of the first cylinder 10 is greater than 0.5, and the ratio of the sliding fit length to the length of the second cylinder 20 is greater than 0.5. When the shock absorber 100 is operating, the first cylinder 10 and the second cylinder 20 can always maintain a relatively large overlapping portion, so that the sliding pair formed by the cooperation of the first cylinder 10 and the second cylinder 20 can maintain good stiffness and strength, enabling the first cylinder 10 and the second cylinder 20 to maintain a stable and good sliding fit relationship when sliding relative to each other in the first direction. As a result, the rod body 40 and the first cylinder 10 can maintain a stable motion state during the relative movement in the first direction, making the linear motor 30 operate more stably, and thus enabling the shock absorber 100 to operate more stably and reliably.

[0097] In this embodiment, the first cylinder 10 and the second cylinder 20 cooperate to form good structural stiffness and strength, allowing the first cylinder 10 and the second cylinder 20 to reduce the wall thickness as needed during design. As a result, the radial dimension of the shock absorber 100 can be optimized to a certain extent, making the overall structure of the shock absorber 100 more compact and small, and enabling the layout space between the vehicle body and the wheels to be utilized more fully, making the layout more convenient. For example Figure 3 As shown, in the figure, L represents the sliding fit length between the first cylinder 10 and the second cylinder 20. Then, the ratio of the sliding fit length L to the length of the first cylinder 10 can be 0.6, 0.62, 0.63, etc., and the ratio of the sliding fit length to the length of the second cylinder 20 can be 0.6, 0.61, 0.65, 0.7, etc.

[0098] In an embodiment of the present invention, with reference to Figure 3 As shown, the rod body 40 and the second cylinder 20 can be an integral part, or the rod body 40 and the second cylinder 20 are separate parts.

[0099] In this embodiment, setting the rod body 40 and the second cylinder 20 as an integral part can make the overall structure of the rod body 40 and the second cylinder 20 more compact, with better overall structural strength and stiffness. As a result, the second cylinder 20 and the rod body 40 can better cooperate with the first cylinder 10 to slide in the first direction, making the shock absorber 100 operate more stably. Integrally forming the rod body 40 and the second cylinder 20 can reduce the tolerance accumulation during the assembly of the shock absorber 100, making it more convenient to assemble the shock absorber 100 in place when connecting and assembling it with the vehicle, and thus making the shock absorber 100 operate more stably in the vehicle to a certain extent.

[0100] In this embodiment, setting the rod body 40 and the second cylinder 20 as separate parts can reduce the forming difficulty and facilitate the processing and manufacturing of the rod body 40 and the second cylinder 20. For example, the rod body 40 and the second cylinder 20 can be connected and fixed by interference connection, riveting, or threaded connection, etc.

[0101] In some examples of the present utility model, such as Figure 3 As shown, one end of the first cylinder 10 located inside the second cylinder 20 can be open. This facilitates the assembly of the rod body, the motor primary, and the guiding structure into the first cylinder 10 from the open side of the first cylinder 10. With one end of the first cylinder 10 located inside the second cylinder 20 being open, the second cylinder 20 can provide a sealing and protective function for the first cylinder 10, thus effectively preventing external dust, rainwater, etc. from falling into the first cylinder 10, enabling the motor primary 31 and the motor secondary 32 to have a good operating environment and making the shock absorber 100 operate more stably.

[0102] In an embodiment of the present utility model, such as Figure 3 As shown, the open end of the first cylinder 10 can be formed as the first end 11, and one end of the second cylinder 20 connected to the rod body 40 can be formed as the closed end 21. The distance between the end face of the first end 11 and the inner end face of the closed end 21 is greater than the maximum height when the shock absorber 100 rebounds.

[0103] In this embodiment, the maximum height when the shock absorber 100 rebounds refers to the limit value of the rebound of the suspension assembly where the shock absorber 100 is located. When the vehicle jolts and bounces, the suspension assembly moves up and down, and the rod body 40 in the shock absorber 100 and the first cylinder 10 move relative to each other in the first direction. The inner end face of the closed end 21 refers to the side surface of the closed end 21 facing the first end 11 in the first direction.

[0104] When the suspension assembly rebounds, the first cylinder 10 moves towards the closed end 21 of the second cylinder 20 in the first direction. In this embodiment, setting the distance between the end face of the first end 11 and the inner end face of the closed end 21 to be greater than the maximum height when the shock absorber 100 rebounds can provide sufficient clearance distance for the movement of the first cylinder 10 towards the closed end 21, thereby preventing the first cylinder 10 from hitting the end face of the second cylinder 20 and enabling the first cylinder 10 and the second cylinder 20 to maintain a stable and good fit state during the operation of the shock absorber 100, so that the shock absorber 100 can operate stably and well. For example Figure 3 As shown, in the figure, d1 represents the distance between the closed end 21 and the first end 11, and the distance d1 can be greater than the maximum height when the shock absorber 100 rebounds.

[0105] In some examples of the present utility model, the value range of the air gap can be 0.5 mm - 1.5 mm. This can enable the linear motor 30 to provide sufficient thrust for the shock absorber 100, enabling the linear motor 30 to meet the usage requirements of the active vibration reduction of the shock absorber 100. For example Figure 5 As shown in, in the figure, d4 represents the size of the air gap, and the size of the air gap can be 0.6 mm, 0.7 mm, 0.8 mm, 0.85 mm, 0.9 mm, etc.

[0106] In some examples of the present utility model, such as Figure 3 shown, the shock absorber may further include a buffer member, and the buffer member is disposed at the second limiting portion.

[0107] In this embodiment, by providing the buffer member 80 at the second limiting portion, when the shock absorber 100 moves violently, the buffer member 80 can play a role in buffering and absorbing energy, so that the buffer member 80 can absorb part of the vibration and load in the shock absorber 100, and make the shock absorber 100 operate more stably.

[0108] In one example of the present utility model, referring to Figure 3 shown, the fixing member 93 may be provided with a clamping groove, and one end of the buffer member 80 in the first direction is clamped and fixed in the clamping groove. This can facilitate the installation and fixation of the buffer member 80, and make it more convenient when the buffer member 80 is assembled with the first rib fastener.

[0109] In some examples of the present utility model, such as Figure 3 shown, a first support plate 91 may be provided on the outer peripheral surface of the first cylinder body 10. The shock absorber 100 may further include: a second support plate 92 and an elastic member 60. The second support plate 92 is installed on the rod body 40 and located outside the second cylinder body 20. The elastic member 60 is sleeved outside the second cylinder body 20, and both ends of the elastic member 60 are respectively connected to the first support plate 91 and the second support plate 92.

[0110] In this embodiment, by providing the first support plate 91 and the second support plate 92, it can facilitate the installation and fixation of the elastic member 60 outside the second cylinder body 20, with a simple structure and convenient use. The elastic member 60 is connected between the first support plate 91 and the second support plate 92. When the shock absorber 100 operates, the elastic member 60 can cooperate with the rod body 40 and the first cylinder body 10 to support the vehicle body and buffer and damp vibrations. Specifically, when the vehicle stops driving, the weight of the vehicle body can be transmitted to the wheels along the rod body 40, the second support plate 92, the elastic member 60, the first support plate 91 and the first cylinder body 10, so as to support the vehicle body. In this way, the usage frequency of the linear motor 30 in the shock absorber 100 can be reduced, thereby reducing energy consumption, reducing the usage cost of the shock absorber 100, and enabling the shock absorber 100 to still stably support the vehicle body when the linear motor 30 fails, so that the shock absorber 100 is more stable and reliable during use.

[0111] When the vehicle jolts and bounces during driving, the elastic member 60 can absorb and buffer vibrations through elastic deformation, and the linear motor 30 operates to weaken the vibrations caused by the rebound of the elastic member 60, so that the shock absorber 100 can well weaken the vibrations of the vehicle body and buffer the impact of the ground, enabling the vehicle to maintain good ride comfort during driving.

[0112] In some examples of the present utility model, the first support plate 91 and the first cylinder 10 may be an integral part. This can make the overall structure of the first support plate 91 and the first cylinder 10 more compact and have better structural strength, enabling the first support plate 91 to have better assembly accuracy when cooperating with the second support plate 92 and the elastic member 60. The first support plate 91 can better connect and support the elastic member 60, so that the shock absorber 100 can operate more stably.

[0113] In an embodiment of the present utility model, the shock absorber 100 may further include a dust cover. The dust cover covers the outside of the first cylinder 10. In the first direction, one end of the dust cover is connected to the first support plate 91, and the other end of the dust cover extends at least to the outer peripheral surface of the second cylinder 20.

[0114] In this embodiment, setting the dust cover can play a role in dust protection for the sliding pair formed by the cooperation of the first cylinder 10 and the second cylinder 20, preventing dust and other impurities from falling on the outer surface where the first cylinder 10 and the second cylinder 20 cooperate and slide, so that the first cylinder 10 and the second cylinder 20 can have a stable and reliable sliding fit. For example, the other end of the dust cover can be fixed to the outer peripheral surface of the second cylinder 20 through a clamp structure, or the other end of the dust cover can directly extend to the second support plate 92 and be connected and fixed to the second support plate 92. Optionally, flange structures can be provided on the first support plate 91 and the second support plate 92 to facilitate the installation and fixation of the dust cover.

[0115] In an embodiment of the present utility model, as Figure 3 shown, the shock absorber 100 may further include a fastener 94. The fastener 94 is disposed on the side of the second support plate 92 facing away from the first support plate 91, and the fastener 94 is fixedly connected to the rod body 40 to fix the second support plate 92 on the rod body 40.

[0116] This can make the connection and fixation of the second support plate 92 and the rod body 40 convenient and reliable, making the installation or disassembly of the second support plate 92 relatively convenient, and making the assembly of the elastic member 60 with the first cylinder 10 and the second cylinder 20 relatively convenient and easy.

[0117] In some examples of the present utility model, referring to Figure 3 shown, the second support plate 92 may be disposed between the fastener 94 and the shoulder of the rod body 40. The shock absorber 100 may further be provided with an adjusting gasket, and the adjusting gasket may be disposed between the second support plate 92 and the shoulder. This can adjust the distance between the second support plate 92 and the first support plate 91 in the first direction after the second support plate 92 is fixed on the rod body 40, thereby changing the elastic performance of the elastic member 60. The adjusting gasket has a simple structure, is convenient to install, and has a good use effect.

[0118] In this embodiment, the second support plate 92 is arranged between the fastener 94 and the shoulder, so that the second support plate 92 can be stably and reliably connected and fixed to the rod body 40 under the clamping and fixing action of the fastener 94 and the shoulder, so that the second support plate 92 can cooperate with the first support plate 91 to stably and reliably connect and fix the elastic member 60.

[0119] In an embodiment of the present utility model, as Figure 3 shown, the shock absorber 100 may further include a connecting arm 70. The connecting arm 70 and the first cylinder 10 are an integral part, and the connecting arm 70 is used to connect with the vehicle wheel.

[0120] In this embodiment, the connecting arm 70 is provided, which can facilitate the connection between the shock absorber 100 and the vehicle wheel. The connecting arm 70 and the first cylinder 10 are an integral part, making the overall structure of the connecting arm 70 and the first cylinder 10 more compact and having better structural strength. It can reduce the tolerance accumulation caused by assembly, making it more convenient to assemble the shock absorber 100 in place when connecting and assembling with the vehicle, so that the shock absorber 100 runs more stably in the vehicle to a certain extent.

[0121] In an embodiment of the present utility model, as Figure 3 shown, the connecting arm 70 may include two fork arms arranged at intervals. The fork arms extend along the first direction and one end is fixedly connected to the first cylinder 10. This can make the connecting arm 70 form good connection and fixing strength when connected to the wheel, keep the connecting arm 70 in good structural form, so that the connecting arm 70 can be more stably and reliably connected to the wheel, making the overall mode of the shock absorber 100 better. The structural form of the connecting arm 70 can be reasonably designed according to the specific connection and assembly requirements.

[0122] In an embodiment of the present utility model, the motor secondary 32 and the first cylinder 10 may be adhesively connected. This can stably and reliably fix the motor secondary 32 on the first cylinder 10, with a simple structure and reliable installation, and make it more convenient and accurate to position the motor secondary 32 in the first cylinder 10.

[0123] In an embodiment of the present utility model, as Figure 3 and Figure 4 shown, the motor secondary 32 extends circumferentially along the first cylinder 10 to form a ring, and the motor secondary 32 can abut against the inner end face of the first end 11 of the first cylinder 10.

[0124] In this embodiment, the motor secondary 32 is arranged as a ring extending circumferentially along the first cylinder 10, that is, the motor secondary 32 is cylindrical. The motor secondary 32 and the motor primary 31 cooperate to form a cylindrical linear motor 30 structure. The coil winding in the motor primary 31 has a high utilization rate, low copper loss and high operating efficiency. The radial acting force between the motor primary 31 and the motor secondary 32, that is, the radial magnetic pull force in the linear motor 30, can cancel each other out, thereby reducing the probability of the motor primary 31 shifting during the long-term operation of the shock absorber 100, and enabling the shock absorber 100 to operate more stably and reliably.

[0125] In this embodiment, the motor secondary 32 is abutted against the inner end face of the first end 11, which can facilitate the installation and positioning of the motor secondary 32 on the first cylinder 10, and make the assembly and positioning of the motor secondary 32 and the motor primary 31 more convenient and accurate.

[0126] Next, refer to Figures 1 - 6 to describe the suspension assembly according to the second aspect embodiment of the present invention.

[0127] As Figures 1 - 6 shown, the suspension assembly according to the embodiment of the present invention includes a shock absorber 100 according to the first aspect embodiment of the present invention.

[0128] Other components and operations of the shock absorber 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0129] According to the suspension assembly of the embodiment of the present invention, by providing the shock absorber 100 of the above first aspect embodiment, the shock absorber 100 is provided with a guiding structure 50. The guiding structure 50 guides and cooperates with the relative movement of the first component and the second component in the first direction, so that when the linear motor 30 provided on the first component and the second component operates, the motor primary 31 and the motor secondary 32 of the linear motor 30 can move relative to each other stably and reliably in the first direction, which well reduces the probability of problems such as eccentric wear of the linear motor 30, thereby enabling the linear motor 30 to operate more stably and reliably, and making the shock absorber 100 operate more stably.

[0130] Next, refer to Figures 1 - 6 to describe the vehicle according to the third aspect embodiment of the present invention.

[0131] As Figures 1 - 6 shown, the vehicle according to the embodiment of the present invention includes: a vehicle body, a wheel, and a suspension assembly according to the second aspect embodiment of the present invention. The shock absorber 100 is connected between the vehicle body and the wheel.

[0132] Other components and operations of the suspension assembly according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0133] According to the vehicle of the embodiment of the present utility model, by providing the suspension assembly of the above-mentioned second aspect embodiment, the shock absorber 100 is provided with a guiding structure 50. The guiding structure 50 guides and cooperates with the relative movement of the first component and the second component in the first direction, so that when the linear motor 30 provided on the first component and the second component operates, the motor primary 31 and the motor secondary 32 of the linear motor 30 can relatively move stably and reliably in the first direction, which greatly reduces the probability of problems such as eccentric wear of the linear motor 30, thereby enabling the linear motor 30 to operate more stably and reliably, and making the shock absorber 100 operate more stably.

[0134] Next, reference will be made to Figures 1 - 6 describe a vehicle according to a specific embodiment of the present utility model.

[0135] As Figures 1 - 6 shown, the vehicle includes a vehicle body, wheels and a suspension assembly. The suspension assembly includes a shock absorber 100, and the shock absorber 100 is provided between the vehicle body and the wheels.

[0136] The shock absorber 100 includes a first cylinder 10, a second cylinder 20, a rod 40, a linear motor 30, a first support plate 91, a second support plate 92, a connecting arm 70, a fixing member 93, a fastener 94, a guiding structure 50, an elastic member 60, a dust cover and a buffer member 80.

[0137] The first cylinder 10 extends in the first direction, and its two ends are respectively a first end 11 and a second end 12. The connecting arm 70 is integrally formed with the first cylinder 10 and is provided at the second end 12. The connecting arm 70 extends away from the first cylinder 10 in the first direction. The connecting arm 70 is provided with two fork arms, and the two fork arms cooperate to connect with a swing arm or a transfer joint in the suspension assembly, thereby connecting with the wheels.

[0138] The second cylinder 20 is sleeved outside the first cylinder 10. The inner peripheral surface of the second cylinder 20 is in sliding fit with the outer peripheral surface of the first cylinder 10. Grease can be coated between the inner peripheral surface of the second cylinder 20 and the outer peripheral surface of the first cylinder 10 for lubrication. One end of the second cylinder 20 in the first direction is closed and the other end is open. The first end 11 of the first cylinder 10 extends into the second cylinder 20 from the open end of the second cylinder 20.

[0139] The rod 40 extends in the first direction and is coaxially arranged with the first cylinder 10 and the second cylinder 20. The rod 40 is integrally formed with the second cylinder 20. The rod 40 is fixedly connected to the closed end 21 of the second cylinder 20. The rod 40 extends into the first cylinder 10 from the first end 11 of the first cylinder 10 in the first direction and is movable in the first direction. The rod 40 is connected to the vehicle body.

[0140] The first support plate 91 is formed on the outer circumferential surface of the first cylinder 10 and is located on the open side of the second cylinder 20. The first support plate 91 extends in a ring shape along the outer circumferential surface of the first cylinder 10. The second support plate 92 is fixed on the rod body 40 and is located on the side of the second cylinder 20 that is away from the first support plate 91. The first support plate 91 and the rod body 40 are fixed to the rod body 40 through the fastener 94 and the axial shoulder of the rod body 40. The fastener 94 is threadedly connected to the rod body 40. The elastic member 60 is a spring. The elastic member 60 is sleeved on the outside of the second cylinder 20 and its two ends are respectively abutted and fixed to the first support plate 91 and the second support plate 92. The dust cover is arranged on the outside of the first cylinder 10 and the second cylinder 20 and is connected to the first support plate 91.

[0141] The linear motor 30 includes a motor primary 31 and a motor secondary 32. The motor primary 31 is an electromagnetic coil, which is composed of at least one phase and at least more than one group of coils wound on an iron core. The iron core is a silicon steel sheet or a steel sheet and is at least more than one sheet. The motor secondary 32 is a magnetic steel and is cylindrical. The magnetic steel can be a permanent magnet material steel or nylon iron boron. In this embodiment, nylon iron boron is used.

[0142] The motor primary 31 is arranged in the cavity of the first cylinder 10 and fixed on the rod 40. The fixing member 93 is threadedly connected to one end of the rod 40 extending into the cavity. The fixing member 93 cooperates with the boss 41 of the rod 40 in the cavity to fasten the motor primary 31 and the guide structure 50 to the rod 40. The guide structure 50 is formed as a bearing, which is a linear bearing and is fixed with an interference fit on the periphery of the stop plate. The motor secondary 32 is fixed to the inner peripheral wall of the first cylinder 10 by glue injection, and the motor secondary 32 abuts against the inner end surface of the first end 11 of the first cylinder 10.

[0143] The bearing is slidably matched with the motor secondary 32, and a slot is provided on the side of the fixing member 93 facing the second end 12. One end of the buffer member 80 is fixed in the slot. The guide structure 50 and the second cylinder 20 jointly guide and position the rod body 40. The rod body 40 is formed into a simply supported beam structure, which has better rigidity and resistance to deformation.

[0144] When the vehicle is traveling on a flat road or is stationary, the linear motor 30 does not operate, and the elastic member 60 in the shock absorber 100 plays a role in supporting the vehicle body. The elastic member 60 can partially buffer the small vibrations that occur when the vehicle is traveling on a flat road. The small vibration of the wheel in the up and down directions can drive the first cylinder 10 to move along the first direction, so that the motor primary 31 and the motor secondary 32 produce relative motion, and the magnetic flux lines of the motor secondary 32 continuously cut the electromagnetic coil in the motor primary 31 to generate partial current, so that the energy of the wheel vibration can be partially converted into electrical energy, achieving energy saving effect.

[0145] When the vehicle is running on an uneven road surface, the linear motor 30 operates, and the elastic member 60 supports the vehicle body. The linear motor 30 continuously changes the direction and magnitude of the current according to the amplitude and direction of the up-and-down vibration of the wheels, changes the relative movement direction between the motor primary 31 and the motor secondary 32 and the magnitude of the formed thrust force, so that the thrust force direction is opposite to the vibration direction of the wheels, thereby attenuating the vibration transmitted from the wheels to the vehicle body and enabling the vehicle to run more stably and safely.

[0146] For the vehicle according to an embodiment of the present invention, by arranging the guiding structure 50 on the shock absorber 100, the guiding structure 50 guides and cooperates with the relative movement of the first component and the second component in the first direction, so that when the linear motor 30 arranged on the first component and the second component operates, the motor primary 31 and the motor secondary 32 of the linear motor 30 can relatively move stably and reliably in the first direction, which well reduces the probability of problems such as eccentric wear of the linear motor 30, thereby enabling the linear motor 30 to operate more stably and reliably and making the shock absorber 100 operate more stably.

[0147] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0148] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood 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 of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0149] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0150] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0151] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that, Comprising: A first component; A second component, one of the first component and the second component being adapted to be connected to the vehicle body, and the other of the first component and the second component being adapted to be connected to the vehicle wheel; A linear motor, the linear motor comprising: a motor primary and a motor secondary, one of the motor primary and the motor secondary being disposed on the first component, and the other of the motor primary and the motor secondary being disposed on the second component, the first component being movable relative to the second component in a first direction, and an air gap being formed between the motor primary and the motor secondary; A guiding structure, in the first direction, the projection of the guiding structure at least covering the projection of the air gap, the guiding structure being used for guiding cooperation between the first component and the second component.

2. The shock absorber according to claim 1, characterized in that, In the first direction, the projection of the guiding structure and the projection of the motor primary at least partially overlap.

3. The shock absorber according to claim 1, characterized in that, The first component includes a first cylinder, the second component includes a rod body, a partial structure of the rod body extends into the first cylinder and one end of the rod body extends out of the first cylinder, and the motor primary and the guiding structure are both disposed on the rod body.

4. The shock absorber according to claim 3, characterized in that, The motor secondary is disposed on the inner wall of the first cylinder, and the guiding structure is adapted to be in sliding contact with the motor secondary.

5. The shock absorber according to claim 3, characterized in that, The motor primary has a first primary end and a second primary end in the first direction, the motor secondary has a first secondary end and a second secondary end in the first direction, and the direction from the first primary end to the second primary end is the same as the direction from the first secondary end to the second secondary end; The distance from the first primary end to the first secondary end is greater than the maximum stroke of the first primary end moving towards the first secondary end, and / or; The distance from the second primary end to the second secondary end is greater than the maximum stroke of the second primary end moving towards the second secondary end.

6. The shock absorber according to claim 4, characterized in that, The motor primary has a first primary end and a second primary end in the first direction, the motor secondary has a first secondary end and a second secondary end in the first direction, and the direction from the first primary end to the second primary end is the same as the direction from the first secondary end to the second secondary end; The guiding structure is disposed on a side of the first primary end away from the second primary end, and the distance from the end face on the side of the guiding structure away from the second primary end to the first secondary end is greater than the maximum stroke of the first primary end moving towards the first secondary end.

7. The shock absorber according to claim 4, characterized in that, The motor primary has a first primary end and a second primary end in the first direction, the motor secondary has a first secondary end and a second secondary end in the first direction, and the direction from the first primary end to the second primary end is the same as the direction from the first secondary end to the second secondary end; The guiding structure is disposed on a side of the second primary end away from the first primary end, and the distance from the end face on the side of the guiding structure away from the first primary end to the second secondary end is greater than the maximum stroke of the second primary end moving towards the second secondary end.

8. The shock absorber according to any one of claims 3-7, characterized in that, The guiding structure is configured as a bearing.

9. The shock absorber according to claim 8, characterized in that, The guiding structure is configured to be disposed adjacent to the motor primary.

10. The shock absorber according to claim 9, characterized in that, The shock absorber further includes a fixing mechanism for fixing at least one of the motor primary and the guiding structure.

11. The shock absorber according to claim 10, characterized in that, The fixing mechanism is used to fix the motor primary and the guiding structure.

12. The shock absorber according to claim 11, characterized in that, The fixing mechanism includes a boss formed on the rod body and a fixing member connected to the rod body, and the motor primary and the guiding structure are arranged between the fixing member and the boss.

13. The shock absorber according to claim 12, characterized in that, The fixing member is a bolt, and the bolt is threadedly connected to the rod body.

14. The shock absorber according to claim 3, wherein A first limiting portion is formed on the rod body, and the first limiting portion is in limiting cooperation with one end of the first cylinder body. One end of the rod body is formed as a second limiting portion, and the second limiting portion is used to cooperate with the other end of the first cylinder body.

15. The shock absorber according to claim 3, characterized in that, The second component further includes a second cylinder body, which is fixedly connected to the rod body. One end of the second cylinder body is open, and the second cylinder body is sleeved outside the first cylinder body and is in sliding cooperation with the first cylinder body.

16. The shock absorber according to claim 15, characterized in that, The bottom wall of the second cylinder body is formed as a limiting portion, and the distance from one end of the first cylinder body close to the bottom wall of the second cylinder body to the bottom wall of the second cylinder body is greater than the maximum distance that the first cylinder body moves towards the bottom wall of the second cylinder body.

17. The shock absorber according to claim 15, characterized in that, In the first direction, the length of the overlapping part of the first cylinder body and the second cylinder body is formed as the sliding cooperation length. The ratio of the sliding cooperation length to the length of the first cylinder body is greater than 0.5, and the ratio of the sliding cooperation length to the length of the second cylinder body is greater than 0.

5.

18. The shock absorber according to claim 15, wherein, One end of the first cylinder body located inside the second cylinder body is open.

19. The shock absorber according to claim 14, characterized in that, The shock absorber further includes a buffer member, and the buffer member is arranged at the second limiting portion.

20. The shock absorber according to claim 15, characterized in that, A first support plate is arranged on the outer peripheral surface of the first cylinder body. The shock absorber further includes: a second support plate and an elastic member. The second support plate is installed on the rod body and is located outside the second cylinder body. The elastic member is sleeved outside the second cylinder body, and two ends of the elastic member are respectively connected to the first support plate and the second support plate.

21. The shock absorber according to claim 3, wherein, It further includes a connecting arm, which is an integral part with the first cylinder body, and the connecting arm is used to be connected to a wheel of the vehicle.

22. A suspension assembly, characterized in that, It includes the shock absorber according to any one of claims 1-21.

23. A vehicle, characterized in that, It includes: a vehicle body and a wheel; The suspension assembly according to claim 22, and the shock absorber is connected between the vehicle body and the wheel.

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