Cam piece, shock absorber, shock absorption system and vehicle

Abstract

The invention discloses a cam piece, a shock absorber, a shock absorption system and a vehicle, a movable cavity is formed in the cam piece, a pushing guide rail is arranged in the movable cavity, the pushing guide rail is suitable for being connected and matched with a driven shaft, and the cam piece is suitable for driving the driven shaft to move in the first direction through the pushing guide rail. According to the cam piece, the movable cavity is formed in the cam piece, at least part of the driven shaft can extend into the movable cavity to be matched with the pushing guide rail on the cam piece, and therefore when the cam piece moves, the driven shaft can be driven by the pushing guide rail to move in the first direction, and the vibration reduction function of the vehicle is achieved; the driving controllability and the riding comfort of the vehicle are improved, a mechanical transmission mode is adopted, the transmission efficiency can be improved, namely, the response speed is increased, the overall structure is simple, the production cost and the manufacturing cost can be reduced, and the satisfaction degree of a user can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and more particularly to a cam component, a shock absorber having the cam component, a damping system having the shock absorber, and a vehicle having the shock absorber or the damping system. Background Technology

[0002] As people's living standards continue to improve, comfort has become an important factor for consumers when choosing a car.

[0003] Shock absorbers are key components of vehicles. Their function is not only to provide support, but also to improve ride stability and thus enhance the comfort of the vehicle during driving. Existing shock absorbers have an internal hydraulic structure for height adjustment, but the internal structure of the hydraulic structure is relatively complex and the installation cost is high, leaving room for improvement. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a cam component that can realize the vibration reduction function of a vehicle, improve the driving control and ride comfort of the vehicle, and adopt a mechanical transmission method to improve transmission efficiency, that is, improve response speed. In addition, the overall structure is relatively simple, which can reduce production and manufacturing costs and improve user satisfaction.

[0005] According to an embodiment of the present invention, a cam member is formed in the cam member, and a push guide rail is provided in the cam member. The push guide rail is adapted to be connected and cooperated with a driven shaft, and the cam member is adapted to drive the driven shaft to move along a first direction through the push guide rail.

[0006] According to an embodiment of the present invention, a cam component is formed within a movable cavity, allowing at least a portion of the driven shaft to extend into the movable cavity and engage with a push guide rail on the cam component. This enables the cam component to drive the driven shaft to move along a first direction via the push guide rail during movement, thereby achieving vehicle vibration reduction, improving vehicle handling and ride comfort. Furthermore, the use of mechanical transmission improves transmission efficiency, i.e., increases response speed. Additionally, the overall structure is relatively simple, reducing production and manufacturing costs, and enhancing user satisfaction.

[0007] According to some embodiments of the present invention, the cam member is configured to be rotatable, and the cam member is adapted to drive the driven shaft to move in a first direction via the push guide when rotating.

[0008] According to some embodiments of the cam member of the present invention, the push guide is formed on the inner peripheral wall of the movable cavity, and the push guide is formed by radially outward recessing in the inner peripheral wall of the movable cavity.

[0009] According to some embodiments of the present invention, the cam component is configured as a spiral groove extending spirally along the first direction.

[0010] According to some embodiments of the present invention, the cam member has two push guides, and the two push guides are distributed opposite to each other in the radial direction of the cam member.

[0011] According to some embodiments of the cam component of the present invention, one end of the movable cavity along the first direction is configured as an open end.

[0012] According to some embodiments of the cam component of the present invention, the other end of the movable cavity along the first direction is configured as a closed end.

[0013] According to some embodiments of the cam component of the present invention, a buffer is provided on the inner side of the closed end.

[0014] The present invention also proposes a vibration damper.

[0015] A vibration damper according to an embodiment of the present invention includes: a cam member as described above, the cam member being adapted to be connected to a first component to be damped; and a driven shaft, the driven shaft being driven by the cam member to move along the first direction under the drive of the cam member.

[0016] According to some embodiments of the present invention, in a vibration damper, at least a portion of one end of the driven shaft extends into the movable cavity and engages with the cam element, and the other end of the driven shaft is adapted to be connected to a second component to be damped.

[0017] According to some embodiments of the present invention, the driven shaft is provided with a mating structure that engages with the push guide rail, at least a portion of the mating structure extending into the push guide rail.

[0018] According to some embodiments of the present invention, the inner peripheral wall of the movable cavity is provided with the push guide rail, and the outer peripheral wall of the driven shaft is provided with the mating structure.

[0019] According to some embodiments of the present invention, one end of the mating structure is fixedly connected to the driven shaft, and the other end of the mating structure is provided with a rotating part that rolls with the push guide rail.

[0020] According to some embodiments of the present invention, the rotating part includes a first inner ring, a first outer ring, and a first rolling element mounted between the first inner ring and the first outer ring. The driven shaft is provided with a mounting shaft, the first inner ring is connected to the mounting shaft, and the first outer ring engages with the inner wall of the push guide rail.

[0021] According to some embodiments of the present invention, the first inner ring portion is fixedly sleeved on the outside of the mounting shaft.

[0022] According to some embodiments of the present invention, the push guide rail and the mating structure are each configured as multiple and correspondingly mated, and the multiple mating structures are spaced apart in the circumferential direction of the vibration damper; or, the push guide rail and the mating structure are each configured as two and correspondingly mated, and the two mating structures are distributed facing each other in the radial direction of the vibration damper.

[0023] According to some embodiments of the present invention, the vibration damper has a support member inside the movable cavity, and the driven shaft is connected to the cam member through the support member.

[0024] According to some embodiments of the present invention, the vibration damper further includes: a housing having a vibration damping cavity formed therein, at least a portion of the cam member being located within the vibration damping cavity, and at least a portion of the driven shaft being located within the vibration damping cavity and cooperating with the cam member.

[0025] According to some embodiments of the present invention, the driven shaft includes a mating shaft section and a mounting shaft section, the outer diameter of the mating shaft section is larger than the outer diameter of the mounting shaft section, the mating shaft section mates with the cam member, and the mounting shaft section passes through the housing along the first direction.

[0026] According to some embodiments of the present invention, the damper has a mating shaft section located within the movable cavity, one end of the mounting shaft section located within the movable cavity and connected to the mating shaft section along the first direction, and the other end of the mounting shaft section extending outside the housing.

[0027] According to some embodiments of the present invention, the housing is provided with a through hole for the mounting shaft section to pass through. One of the outer peripheral wall of the mounting shaft section and the inner peripheral wall of the through hole is provided with a guide rib and the other is provided with a guide limiting groove. The guide rib and the guide limiting groove are guided and engaged along the first direction.

[0028] According to some embodiments of the present invention, the cam member includes an input shaft portion and a cam push portion. The input shaft portion passes through the housing and extends outside the damping cavity. The cam push portion is connected to one end of the input shaft portion and is located inside the damping cavity and forms the movable cavity.

[0029] According to some embodiments of the present invention, the input shaft includes a first shaft segment and a second shaft segment, one end of the first shaft segment is connected to the cam pusher and the other end is connected to the second shaft segment; wherein the second shaft segment passes through the housing and is rotatably supported on the housing by a bearing member, the outer diameter of the first shaft segment is larger than the outer diameter of the second shaft segment, and the bearing member is axially limited and pressed against the end face of the first shaft segment and the inner end face of the housing.

[0030] According to some embodiments of the present invention, the housing has a mounting groove communicating with the end of the damping cavity, and a stop limiting surface is formed in the mounting groove; the bearing member is installed in the mounting groove, and the bearing member includes a second inner ring portion, a second outer ring portion and a second rolling element located between the second inner ring portion and the second outer ring portion, the second inner ring portion is axially limited and presses against the end face of the first shaft segment, and the second outer ring portion is axially limited and presses against the stop limiting surface.

[0031] According to some embodiments of the present invention, the housing includes a first end cover, a main body shell, and a second end cover. The first end cover and the second end cover are respectively connected to the two ends of the main body shell to define the damping cavity together with the main body shell, and the first end cover and the second end cover are distributed opposite to each other along the first direction. The cam member is rotatably disposed through the first end cover, and the driven shaft is movably disposed through the second end cover.

[0032] According to some embodiments of the present invention, the vibration damper has a mounting seat at the first end of the main body shell, and a mounting groove communicating with the vibration damping cavity is provided in the mounting seat. The cam member is supported on the main body shell by a bearing member provided in the mounting groove. The first end cover is detachably connected to the mounting seat. And / or, the second end cover includes a disc part and a sleeve part. The disc part is detachably connected to the second end of the main body shell. The sleeve part is located in the central region of the disc part, and the sleeve part is provided with a through hole that extends axially. The driven shaft is movably inserted through the through hole.

[0033] According to some embodiments of the present invention, the damper further includes a damping spring, a lower fork arm is connected to one end of the driven shaft located outside the damping cavity, a limiting portion is provided on the outer peripheral wall of the housing, and the two ends of the damping spring respectively press against the lower fork arm and the limiting portion.

[0034] According to some embodiments of the present invention, the outer peripheral wall of the housing is provided with a reinforcing structure.

[0035] According to some embodiments of the present invention, the vibration damper further includes a drive member connected to the cam member, the drive member being used to drive the cam member to rotate.

[0036] According to some embodiments of the present invention, the drive member and the cam member are coaxially arranged in the vibration damper.

[0037] According to some embodiments of the present invention, the driven shaft is adapted to extend from the open end of the movable cavity into the cam member; and / or, the driven shaft and the buffer member in the movable cavity are distributed opposite each other along the first direction.

[0038] The present invention also proposes a vibration reduction system.

[0039] The vibration damping system according to embodiments of the present invention includes the vibration damper described in any one of the above-described embodiments.

[0040] The present invention also proposes a vehicle.

[0041] The vehicle according to embodiments of the present invention includes the shock absorber described in any one of the above-described embodiments, or includes the shock absorption system described above.

[0042] The vehicle, the shock absorption system, the shock absorber, and the aforementioned cam have the same advantages over the prior art, and will not be elaborated here.

[0043] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0044] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0045] Figure 1 This is a schematic diagram of the structure of a vibration damper according to an embodiment of the present invention;

[0046] Figure 2 yes Figure 1 Schematic diagram of the cross section at point AA;

[0047] Figure 3 yes Figure 2 A magnified view of a section at point B in the middle;

[0048] Figure 4 This is a schematic diagram of the structure of a cam component according to an embodiment of the present invention. Figure 1 ;

[0049] Figure 5 yes Figure 4 Schematic diagram of the cross section at point C;

[0050] Figure 6 yes Figure 4 Schematic diagram of the cross section at point DD;

[0051] Figure 7 This is a schematic diagram of the driven shaft according to an embodiment of the present invention. Figure 1 ;

[0052] Figure 8 This is a schematic diagram of the driven shaft according to an embodiment of the present invention. Figure 2 ;

[0053] Figure 9This is a schematic diagram of the outline of the push guide rail according to an embodiment of the present invention. Figure 1 ;

[0054] Figure 10 This is a schematic diagram of the outline of the push guide rail according to an embodiment of the present invention. Figure 2 ;

[0055] Figure 11 This is a schematic diagram of the outline of the push guide rail according to an embodiment of the present invention. Figure 3 ;

[0056] Figure 12 This is a schematic diagram of the structure of the housing according to an embodiment of the present invention;

[0057] Figure 13 This is a cross-sectional schematic diagram of the housing according to an embodiment of the present invention;

[0058] Figure 14 This is a schematic diagram of the structure of a cam component according to an embodiment of the present invention. Figure 2 ;

[0059] Figure 15 This is a schematic diagram of the structure of a cam component according to an embodiment of the present invention. Figure 3 .

[0060] Figure label:

[0061] Cam component 100, shock absorber 200,

[0062] 1. Movable cavity, 11. Push guide rail, 12. Open end, 13. Buffer, 2. Driven shaft, 3. Mating structure, 31. Rotating part, 311. First inner ring, 3111. First outer ring, 3112. First rolling element, 3113. Mounting shaft, 32. Mating shaft section, 33. Mounting shaft section, 34. Guide rib, 341. Support, 4. Housing, 5. Vibration damping cavity, 51. Through hole, 52. Mounting groove, 53. Stop and limit surface, 531. First end cover, 54. Main body shell, 55. Mounting base, 551. Second end cap 56, disc body 561, sleeve 562, limiting part 57, reinforcing structure 58, input shaft 6, first shaft section 61, second shaft section 62, cam pusher 7, bearing 8, second inner ring 81, second outer ring 82, second rolling element 83, damping spring 9, spring base 91, dust cover 92, lower fork arm 10, drive element 16, bolt 17, contour line 18, trigonometric function segment 181, straight line segment 182, arc segment 183, horizontal segment 184. Detailed Implementation

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying 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 with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0065] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0067] The following is for reference. Figures 1-15 The cam member 100 according to an embodiment of the present invention is described. By forming a movable cavity 1 in the cam member 100, at least a portion of the driven shaft 3 can extend into the movable cavity 1 and cooperate with the push guide rail 11 on the cam member 100. Thus, when the cam member 100 moves, it can drive the driven shaft 3 to move along a first direction by pushing the guide rail 11, thereby realizing the vehicle's vibration reduction function, improving the vehicle's driving control and ride comfort. Moreover, the use of mechanical transmission can improve transmission efficiency, that is, improve response speed. In addition, the overall structure is relatively simple, which can reduce production and manufacturing costs and help improve user satisfaction.

[0068] like Figures 1-15As shown, according to an embodiment of the present invention, a cam member 100 has a movable cavity 1 formed therein, and a push guide rail 11 is provided in the movable cavity 1. The push guide rail 11 is adapted to be connected and cooperated with the driven shaft 3, and the cam member 100 is adapted to drive the driven shaft 3 to move along a first direction by pushing the push guide rail 11.

[0069] Specifically, the cam member 100 is constructed as a columnar body, and a movable cavity 1 is formed within the cam member 100. The movable cavity 1 is constructed as a hollow cavity, which can be used to accommodate other components. A push guide rail 11 is provided within the movable cavity 1, which can extend at least a portion of the driven shaft 3 into the movable cavity 1, so that the push guide rail 11 can be connected and engaged with the driven shaft 3 within the movable cavity 1. Thus, the cam member 100 and the driven shaft 3 can be engaged within the movable cavity 1 through the push guide rail 11, thereby enabling power transmission between the cam member 100 and the driven shaft 3, so that the cam member 100 can drive the driven shaft 3 to move, or the driven shaft 3 can drive the cam member 100 to move.

[0070] Furthermore, the cam member 100 can drive the driven shaft 3 to move along the first direction by pushing the guide rail 11. That is, when the cam member 100 moves, the push guide rail 11 inside the cam member 100 can drive the driven shaft 3 to move along the first direction, where the first direction is the axial direction of the cam member 100, i.e. the up and down direction. In other words, the cam member 100 can drive the driven shaft 3 to move along the up and down direction by pushing the guide rail 11. Thus, when the cam member 100 and the driven shaft 3 are connected to the vehicle body and the wheel respectively, the vibration energy of the vehicle can be absorbed through the movement of the cam member 100 and the driven shaft 3, thereby playing a role in vibration reduction and realizing the vibration reduction function of the vehicle. Moreover, the overall structure is relatively simple, which can reduce production and manufacturing costs.

[0071] According to the cam member 100 of the present invention, by forming a movable cavity 1 in the cam member 100, at least a portion of the driven shaft 3 can extend into the movable cavity 1 and cooperate with the push guide rail 11 on the cam member 100. Thus, when the cam member 100 moves, it can drive the driven shaft 3 to move along a first direction by pushing the guide rail 11, thereby realizing the vehicle's vibration reduction function, improving the vehicle's driving control and ride comfort. Moreover, the use of mechanical transmission can improve transmission efficiency, that is, improve response speed. In addition, the overall structure is relatively simple, which can reduce production and manufacturing costs and help improve user satisfaction.

[0072] In some embodiments, the cam 100 is configured to be rotatable, and the cam 100 is adapted to drive the driven shaft 3 to move in a first direction by pushing the guide rail 11 when rotating.

[0073] Specifically, a movable cavity 1 is formed inside the cam member 100, and a push guide rail 11 is provided inside the movable cavity 1. The push guide rail 11 can be connected and cooperate with the driven shaft 3, so that the cam member 100 can drive the driven shaft 3 to move in the first direction through the push guide rail 11. The cam member 100 is set to be rotatable, so that when the cam member 100 rotates, it can drive the driven shaft 3 to move in the first direction through the push guide rail 11 to absorb the vibration energy of the vehicle, thereby realizing the vibration reduction function of the vehicle.

[0074] In some embodiments, the push guide 11 is formed on the inner peripheral wall of the movable cavity 1, and the push guide 11 is formed by radially outward recessing in the inner peripheral wall of the movable cavity 1.

[0075] Specifically, a movable cavity 1 is formed within the cam member 100, and a push guide rail 11 is provided within the movable cavity 1. The push guide rail 11 is formed on the inner peripheral wall of the movable cavity 1, so that the cam member 100 can drive the driven shaft 3 located inside the movable cavity 1 to move along the first direction through the push guide rail 11. The push guide rail 11 is formed by radial outward concavity on the inner peripheral wall of the movable cavity 1, that is, the push guide rail 11 can be concave outward from the inner peripheral wall of the movable cavity 1 along the radial direction of the cam member 100, so that the push guide rail 11 can have a certain depth, which facilitates connection and cooperation with the driven shaft 3, so as to drive the driven shaft 3 to move under the action of the cam member 100. At the same time, it can also avoid the push guide rail 11 occupying the internal space of the movable cavity 1, which would prevent the driven shaft 3 from moving in the first direction within the movable cavity 1, thereby improving the reliability of the driven shaft 3 moving in the first direction.

[0076] In some embodiments, the push guide 11 is configured as a spiral groove extending in a spiral shape along a first direction.

[0077] Specifically, the push guide rail 11 is formed on the inner peripheral wall of the movable cavity 1 and can be connected and cooperated with the driven shaft 3, so that the cam member 100 can drive the driven shaft 3 to move along the first direction by pushing the guide rail 11 when rotating. The push guide rail 11 is constructed as a spiral groove extending in a spiral shape along the first direction, so that the push guide rail 11 has a certain spiral angle in the up and down direction. When the cam member 100 rotates, the push guide rail 11 can convert the rotational motion on the cam member 100 into the linear motion of the driven shaft 3 along the first direction, so as to absorb the vibration energy of the vehicle through the movement of the cam member 100 and the driven shaft 3, and realize the vibration reduction function of the vehicle.

[0078] In such Figure 2 , Figures 9-10 In the illustrated embodiment, the centerline of the spiral groove is spiral-shaped, representing the movement path of the portion of the driven shaft 3 that connects and mates with the push guide rail 11 within the push guide rail 11. The portion of the driven shaft 3 that mates with the push guide rail 11 can reciprocate along the spiral groove, such as... Figure 11The diagram shows the unfolded outline 18 of the spiral groove in a plane. The outline 18 is divided into a trigonometric segment 181, an arc segment 183, and a straight line segment 182. The trigonometric segment 181 corresponds to the range of motion of the driven shaft 3 in normal movement within the cam component 100 during the engagement with the push guide rail 11. At both ends of the trigonometric segment 181, there is a short horizontal segment 184 with a slope close to zero. The horizontal segment 184 is used to control the extreme positions of the driven shaft 3 in its vertical stroke. When the driven shaft 3 moves to the extreme positions of its vertical stroke, the driven shaft 3... The speed of movement is close to zero, and the axial force on the outside reaches its maximum value. Therefore, the required movement trajectory at this point is relatively gentle. This allows for the efficient transmission of axial force while providing space for the driven shaft 3 to decelerate. The arc segment 183 can serve as a transition, connecting the trigonometric function segment 181 and the straight segment 182. The straight segment 182 is used for assembly. When the driven shaft 3 is connected to the push guide rail 11, the entire part of the driven shaft 3 that mates with the push guide rail 11 can be pushed into the cam component 100 from the straight segment 182.

[0079] Furthermore, the push guide rail 11 can also be constructed as a wavy groove extending circumferentially along the cam member 100. When the cam member 100 rotates, the part of the driven shaft 3 that cooperates with the push guide rail 11 can slide in the wavy groove and drive the driven shaft 3 to reciprocate along the first direction. It should be noted that constructing the push guide rail 11 as a spiral groove or a wavy groove can achieve bidirectional movement of the driven shaft 3 in the first direction.

[0080] In some embodiments, there are two push rails 11, and the two push rails 11 are distributed opposite each other in the radial direction of the cam member 100.

[0081] Specifically, the guide rail 11 is used to drive the driven shaft 3 to move under the action of the cam component 100, such as... Figure 6 As shown, the push guide rail 11 is constructed as two, so that both push guide rails 11 can be connected and cooperate with the driven shaft 3, so that the driven shaft 3 can be driven to move in the first direction at the same time by the two push guide rails 11, which can improve the reliability of the driven shaft 3 moving in the first direction. Moreover, the two push guide rails 11 are relatively distributed in the radial direction of the cam member 100, so that the two push guide rails 11 are spaced apart inside the movable cavity 1, which can improve the stability of the push guide rail 11 driving the driven shaft 3 to move in the first direction.

[0082] The push guide 11 can be constructed as a spiral groove, and the two push guides 11 can be distributed opposite each other in the radial direction of the cam 100, so that the two push guides 11 form a double spiral structure, and the driven shaft 3 can be driven to move smoothly in the first direction by the double spiral structure.

[0083] In some embodiments, one end of the active cavity 1 along the first direction is configured as an open end 12.

[0084] Specifically, at least a portion of the driven shaft 3 can extend into the movable cavity 1 and connect with the push guide rail 11. One end of the movable cavity 1 is configured as an open end 12, and the driven shaft 3 can extend into the movable cavity 1 from the open end 12. This allows at least a portion of the driven shaft 3 to extend into the movable cavity 1 from the open end 12, so that the driven shaft 3 can connect with the push guide rail 11. The open end 12 is formed at one end of the movable cavity 1 along the first direction, so that the upper or lower end of the movable cavity 1 along the first direction can be configured as an open end, allowing the driven shaft 3 to move along the first direction under the drive of the push guide rail 11.

[0085] In some embodiments, the other end of the active cavity 1 along the first direction is configured as a closed end 13.

[0086] Specifically, one end of the movable cavity 1 along the first direction is constructed as an open end 12, so that at least a portion of the driven shaft 3 can extend from the open end 12 into the movable cavity 1 and connect with the push guide rail 11, so that the driven shaft 3 can move along the first direction under the drive of the push guide rail 11. At the same time, the other end of the movable cavity 1 along the first direction is constructed as a closed end 13, which can prevent the driven shaft 3 from coming out of the movable cavity 1 when it moves along the first direction under the drive of the push guide rail 11.

[0087] The first direction is the up-down direction. The upper end of the movable cavity 1 can be constructed as an open end 12 and the lower end as a closed end 13, or the upper end of the movable cavity 1 can be constructed as a closed end 13 and the lower end as an open end 12. Both can satisfy the connection and cooperation between the push guide rail 11 and the driven shaft 3, so that the push guide rail 11 can drive the driven shaft 3 to move along the first direction.

[0088] For example, such as Figure 5 As shown, the upper end of the movable cavity 1 is constructed as a closed end 13 and the lower end is constructed as an open end 12, so that the driven shaft 3 can extend from below the cam member 100 into the movable cavity 1, so that the push guide rail 11 can drive the driven shaft 3 to move along the first direction, and can prevent the driven shaft 3 from coming out of the upper end of the movable cavity 1.

[0089] In some embodiments, a buffer 2 is provided on the inner side of the closed end 13.

[0090] Specifically, such as Figure 5 As shown, a buffer 2 is provided on the inner side of the closed end 13. The buffer 2 can be used to absorb part of the impact energy to reduce the impact on the vehicle and occupants caused by uneven road surface. Also, the driven shaft 3 is located below the cam 100, so the buffer 2 can be set on the movement path of the driven shaft 3 along the first direction. The buffer 2 can be used to limit the maximum stroke of the driven shaft 3 when it moves upward, so as to avoid damage to the cam 100 or the driven shaft 3 due to excessive compression between the driven shaft 3 and the cam 100.

[0091] The buffer 2 can be connected to the cam 100 by bolt 17. Internal threads can be provided on both the cam 100 and the buffer 2 so that the bolt 17 engages with the internal threads on the cam 100 and the buffer 2 to connect the cam 100 and the buffer 2. The connection method is simple, reliable and easy to operate.

[0092] The present invention also proposes a vibration damper 200.

[0093] The vibration damper 200 according to an embodiment of the present invention includes: the cam member 100 described above and the driven shaft 3.

[0094] The cam 100 is adapted to be connected to the first shock absorber; the driven shaft 3 is driven by the cam 100 to move along the first direction.

[0095] Specifically, the cam 100 can drive the driven shaft 3 to move along the first direction by pushing the guide rail 11, thus enabling the cam 100 and the driven shaft 3 to be in transmission cooperation. This allows the cam 100 to transmit power to the driven shaft 3, so that the driven shaft 3 can move along the first direction under the drive of the cam 100. The cam 100 can also be connected to the first shock absorber, which means that the cam 100, the first shock absorber, and the driven shaft 3 can be connected simultaneously. This allows the cam 100 to drive the driven shaft 3 to move and absorb the vibration energy on the first shock absorber, thereby reducing the vibration intensity of the first shock absorber. The first shock absorber can be a car body or a wheel.

[0096] In some embodiments, at least a portion of one end of the driven shaft 3 extends into the movable cavity 1 and engages with the cam member 100, while the other end of the driven shaft 3 is adapted to be connected to the second shock-absorbing component.

[0097] Specifically, at least a portion of one end of the driven shaft 3 extends into the movable cavity 1 and engages with the cam member 100 for transmission. This allows the driven shaft 3 to extend partially or completely into the movable cavity 1, facilitating its connection with the push guide rail 11. This enables the transmission between the driven shaft 3 and the cam member 100, allowing power transmission between them. The cam member 100 then drives the driven shaft 3 to move in the first direction via the push guide rail 11. Simultaneously, the other end of the driven shaft 3 is connected to the second shock-absorbing component. By connecting the cam 100 and the driven shaft 3 between the first damping component and the second damping component, the transmission of vibration energy between the first damping component and the second damping component can be reduced. The first damping component can be the vehicle body, and the second damping component can be the wheel. This can realize the vehicle's vibration reduction function, improve the vehicle's driving control and ride comfort, and the cam 100 and the second damping component can be connected to the two ends of the driven shaft 3 respectively to avoid interference between the two, which could lead to the failure of the shock absorber 200.

[0098] In some embodiments, the driven shaft 3 is provided with a mating structure 31 that mates with the push guide rail 11, and at least a portion of the mating structure 31 extends into the push guide rail 11.

[0099] Specifically, the driven shaft 3 can extend into the interior of the movable cavity 1 and connect with the push guide rail 11. A mating structure 31 that mates with the push guide rail 11 is provided on the driven shaft 3. That is, when the driven shaft 3 extends into the interior of the movable cavity 1, the mating structure 31 can mate with the push guide rail 11 inside the movable cavity 1. Thus, the mating structure 31 can achieve the mating between the push guide rail 11 and the driven shaft 3. At least a part of the mating structure 31 can extend into the push guide rail 11. That is, the mating structure 31 can be partially or completely extended into the push guide rail 11. The mating between the push guide rail 11 and the mating structure 31 can achieve the installation mating between the cam member 100 and the driven shaft 3, so that the cam member 100 can drive the driven shaft 3 to move in the first direction through the push guide rail 11 and the mating structure 31.

[0100] In some embodiments, the inner peripheral wall of the active cavity 1 is provided with a push guide rail 11, and the outer peripheral wall of the driven shaft 3 is provided with a mating structure 31.

[0101] Specifically, a push guide rail 11 is formed inside the movable cavity 1, and a mating structure 31 is provided on the driven shaft 3. The driven shaft 3 can extend into the movable cavity 1, so that the mating structure 31 and the push guide rail 11 can be mated. The push guide rail 11 is set on the inner peripheral wall of the movable cavity 1, and the mating structure 31 is set on the outer peripheral wall of the driven shaft 3. This allows the mating structure 31 to move closer to the push guide rail 11, so that the mating structure 31 can extend into the interior of the push guide rail 11 and be mated with the push guide rail 11 inside the movable cavity 1. This enables the mating between the cam member 100 and the driven shaft 3, ensuring that the cam member 100 can drive the driven shaft 3 to move in the first direction.

[0102] In some embodiments, one end of the mating structure 31 is fixedly connected to the driven shaft 3, and the other end of the mating structure 31 is provided with a rotating part 311 that rolls with the push guide rail 11.

[0103] Specifically, a mating structure 31 is provided on the driven shaft 3. The mating structure 31 can extend into the interior of the push guide rail 11 and engage with the push guide rail 11, so that the push guide rail 11 can drive the driven shaft 3 to move in the first direction through the mating structure 31. One end of the mating structure 31 can be fixedly connected to the driven shaft 3 to improve the reliability of the driven shaft 3's movement under the drive of the mating structure 31. At the same time, a rotating part 311 is provided at the other end of the mating structure 31, which rolls with the push guide rail 11. The engagement between the push guide rail 11 and the mating structure 31 can be achieved through the rotating part 311. The rotating part 311 and the driven shaft 3 can be connected to the two ends of the mating structure 31 respectively to avoid interference between them, which would prevent the push guide rail 11 from driving the driven shaft 3 to move. Moreover, the rotating part 311 and the push guide rail 11 are in a rolling engagement, that is, the cam member 100 can drive the rotating part 311 to roll along the push guide rail 11 through the push guide rail 11, so that the rotating part 311 can drive the driven shaft 3 to move in the first direction.

[0104] In some embodiments, the rotating part 311 includes a first inner ring part 3111, a first outer ring part 3112, and a first rolling element 3113 mounted between the first inner ring part 3111 and the first outer ring part 3112. The driven shaft 3 is provided with a mounting shaft 32. The first inner ring part 3111 is connected to the mounting shaft 32, and the first outer ring part 3112 cooperates with the inner wall of the push guide rail 11.

[0105] Specifically, such as Figure 7As shown, a mounting shaft 32 is provided on the driven shaft 3. The mounting shaft 32 is used to connect with the rotating part 311. The first inner ring part 3111 is connected to the mounting shaft 32, so that the rotating part 311 and the driven shaft 3 can be connected through the first inner ring part 3111. The first outer ring part 3112 is sleeved on the outside of the first inner ring part 3111, and a first rolling element 3113 is installed between the first outer ring part 3112 and the first inner ring part 3111. The first outer ring part 3112 can rotate relative to the first inner ring part 3111 through the first rolling element 3113. Thus, the first outer ring part 3112 can rotate relative to the driven shaft 3. At the same time, the first outer ring part 3112 is engaged with the inner wall of the push guide rail 11, so that the rotating part 311 and the push guide rail 11 can be rolled together through the first outer ring part 3112. The first outer ring part 3112 can roll along the inner wall of the push guide rail 11.

[0106] Therefore, when the cam 100 rotates, the push guide 11 can drive the first outer ring 3112 to roll along the inner wall of the push guide 11, and when the first outer ring 3112 rolls along the push guide 11, the first inner ring 3111 can drive the driven shaft 3 to move in the first direction, thereby realizing the vehicle's vibration reduction function.

[0107] In some embodiments, the first inner ring portion 3111 is fixedly sleeved on the outside of the mounting shaft 32.

[0108] Specifically, the first inner ring portion 3111 is connected to the mounting shaft 32. When the first outer ring portion 3112 rolls along the inner wall of the push guide rail 11, it can drive the driven shaft 3 to move in the first direction. By fixing the first inner ring portion 3111 to the outside of the mounting shaft 32, the first inner ring portion 3111 and the mounting shaft 32 can be fixedly connected, realizing the connection between the rotating part 311 and the driven shaft 3, which can improve the reliability of the first inner ring portion 3111 driving the driven shaft 3 to move in the first direction.

[0109] In some embodiments, the push guide rail 11 and the mating structure 31 are both configured as multiple and correspond to each other, and the multiple mating structures 31 are distributed at intervals in the circumferential direction of the damper 200.

[0110] Specifically, a push guide rail 11 is provided on the cam member 100, and a mating structure 31 is provided on the driven shaft 3. The cam member 100 can drive the driven shaft 3 to move through the mating of the push guide rail 11 and the mating structure 31. By setting multiple push guide rails 11 and mating structures 31, the cam member 100 can drive the driven shaft 3 to move through the mating of multiple push guide rails 11 and multiple mating structures 31, which can improve the reliability of the cam member 100 driving the driven shaft 3 to move. Furthermore, the mating of multiple push guide rails 11 and multiple mating structures 31 is one-to-one, that is, for each push guide rail 11, there is a mating structure 31 to mate with it, which can effectively improve the reliability of the mating between the push guide rail 11 and the mating structure 31. In addition, the multiple mating structures 31 are spaced apart in the circumferential direction of the damper 200, which can avoid interference between the multiple mating structures 31 and improve the stability of the cam member 100 driving the driven shaft 3 to move.

[0111] Alternatively, the push guide rail 11 and the mating structure 31 are both set to be two and matched one-to-one, with the two mating structures 31 being distributed opposite each other in the radial direction of the damper 200.

[0112] Specifically, such as Figure 2 As shown, the damper 200 is provided with two push guide rails 11 and two mating structures 31. The cam member 100 can drive the driven shaft 3 to move through the cooperation between the two push guide rails 11 and the two mating structures 31. The two push guide rails 11 and the two mating structures 31 are matched one-to-one, so that each push guide rail 11 can drive the corresponding mating structure 31 to move. This can improve the reliability of the cam member 100 driving the driven shaft 3 to move. In addition, the two mating structures 31 are distributed opposite each other in the radial direction of the damper 200, so that the two mating structures 31 can be spaced apart to avoid interference between them. The height of the two mating structures 31 on the driven shaft 3 can be kept consistent to improve the stability of the cam member 100 driving the driven shaft 3 to move in the first direction.

[0113] Furthermore, it should be noted that the design of the push guide rail 11 and the mating structure 31 ensures that the cam 100 and the driven shaft 3 always maintain a proper fit. Therefore, there will be no idle travel due to gaps between the push guide rail 11 and the mating structure 31. Simultaneously, the one-to-one mating of the push guide rail 11 and the mating structure 31 avoids abnormal noise and reduces response time caused by idle travel. Moreover, multiple push guide rails 11 and multiple driven shafts 3 can be provided in the vibration damper 200, and the multiple driven shafts 3 can be connected in parallel, decomposing the total stress transmitted from the cam 100 to the driven shafts 3 into stresses on multiple driven shafts 3, such as... Figures 14-15The diagrams shown are structural schematics of cam members 100 with one and three push guide rails 11, respectively. In both cases, the cam member 100 drives the driven shaft 3 to move by pushing the guide rail 11 and the cooperating structure 31.

[0114] In some embodiments, the active cavity 1 is provided with a support member 4, and the driven shaft 3 is connected to the cam member 100 through the support member 4.

[0115] Specifically, a movable cavity 1 is formed within the cam member 100, and a support member 4 is disposed within the movable cavity 1. The support member 4 is positioned inside the cam member 100, and the driven shaft 3 is connected to the cam member 100 via the support member 4. This connection between the support member 4 and the cam member 100 ensures the reliable operation of the support member 4 and facilitates its installation. Simultaneously, the support member 4 is connected to the driven shaft 3. Figure 2 As shown, the support member 4 can be sleeved on the outside of the driven shaft 3, so that the driven shaft 3 can slide with the support member 4, thereby guiding the movement of the driven shaft 3 through the support member 4 and ensuring that the driven shaft 3 can move in the first direction. The support member 4 can be a bearing.

[0116] In some embodiments, the damper 200 further includes a housing 5, a damping cavity 51 is formed in the housing 5, at least a portion of the cam member 100 is located in the damping cavity 51, and at least a portion of the driven shaft 3 is located in the damping cavity 51 and cooperates with the cam member 100.

[0117] Specifically, the housing 5 provides an installation position for the cam member 100, forming a damping cavity 51 within the housing 5. At least a portion of the cam member 100 is disposed within the damping cavity 51, allowing for the installation of the cam member 100. The housing 5 also protects the cam member 100, ensuring its reliable operation. Furthermore, at least a portion of the driven shaft 3 is located within the damping cavity 51 and engages with the cam member 100, allowing part or all of the driven shaft 3 to extend into the movable cavity 1. Since part or all of the driven shaft 3 can be located within the damping cavity 51, and the driven shaft 3 can engage with the cam member 100 within the damping cavity 51, the driven shaft 3 can move along a first direction under the drive of the cam member 100, thereby achieving the damping function of the vibration damper 200.

[0118] In some embodiments, the driven shaft 3 includes a mating shaft section 33 and a mounting shaft section 34. The outer diameter of the mating shaft section 33 is larger than the outer diameter of the mounting shaft section 34. The mating shaft section 33 mates with the cam member 100, and the mounting shaft section 34 passes through the housing 5 along a first direction.

[0119] Specifically, the mounting shaft section 34 is used to install the driven shaft 3, and the mating shaft section 33 is used to achieve the mating between the driven shaft 3 and the cam component 100. By inserting the mounting shaft section 34 along the first direction into the housing 5, the driven shaft 3 can be installed on the housing 5 through the mounting shaft section 34. Simultaneously, as... Figure 8 As shown, a mating structure 31 is provided on the outer peripheral wall of the mating shaft section 33, so that the driven shaft 3 and the cam member 100 can be mated through the mating shaft section 33. Furthermore, the outer diameter of the mating shaft section 33 is larger than the outer diameter of the mounting shaft section 34, so that the driven shaft 3 can be constructed as a T-shape, and the mating shaft section 33 is close to the cam member 100, so that the mating structure 31 on the mating shaft section 33 can be mated with the push guide rail 11 on the cam member 100.

[0120] In some embodiments, the mating shaft section 33 is located inside the movable cavity 1, one end of the mounting shaft section 34 is located inside the movable cavity 1 and is connected to the mating shaft section 33 along a first direction, and the other end of the mounting shaft section 34 extends outside the housing 5.

[0121] Specifically, by placing the mating shaft section 33 inside the movable cavity 1, the mating structure 31 connected to the mating shaft section 33 can be placed inside the movable cavity 1, so that the mating structure 31 can cooperate with the push guide rail 11, allowing the cam member 100 to drive the driven shaft 3 to move along the first direction. Furthermore, by extending one end of the mounting shaft section 34 into the movable cavity 1 and connecting it to the mating shaft section 33 along the first direction, the driven shaft 3 can be made into a whole, which can improve the overall structural strength of the driven shaft 3 and allow the mating shaft section 33 to drive the mounting shaft section 34 to move along the first direction. The other end of the mounting shaft section 34 extends outside the housing 5, so that the driven shaft 3 can be connected to the second shock-absorbing component through the mounting shaft section 34, and the vibration energy on the second shock-absorbing component can be absorbed through the movement of the driven shaft 3.

[0122] In some embodiments, the housing 5 is provided with a through hole 52 for the mounting shaft section 34 to pass through. One of the outer peripheral wall of the mounting shaft section 34 and the inner peripheral wall of the through hole 52 is provided with a guide rib 341 and the other is provided with a guide limiting groove. The guide rib 341 and the guide limiting groove are guided and engaged in a first direction.

[0123] In other words, the mounting shaft section 34 can be inserted into the through hole 52 to achieve the connection between the driven shaft 3 and the housing 5. A guide rib 341 can be provided on the outer peripheral wall of the mounting shaft section 34, and a guide limiting groove can be provided on the inner peripheral wall of the through hole 52. Alternatively, a guide limiting groove can be provided on the outer peripheral wall of the mounting shaft section 34, and a guide rib 341 can be provided on the inner peripheral wall of the through hole 52. This allows the guide rib 341 to slide in the guide limiting groove along the first direction, thereby extending the guide rib 341 in the first direction. The sliding of the guide rib 341 is guided by the guide limiting groove, which in turn guides the movement of the driven shaft 3 in the first direction, ensuring the reliability of the driven shaft 3's movement in the first direction.

[0124] In such Figures 7-8 In the embodiment shown, a guide rib 341 is provided on the outer peripheral wall of the mounting shaft section 34, and a guide limiting groove is formed on the inner peripheral wall of the through hole 52. The guide rib 341 can slide along the guide limiting groove, which can prevent the driven shaft 3 from rotating while moving in the first direction, thus avoiding a decrease in transmission efficiency.

[0125] In some embodiments, the cam member 100 includes an input shaft portion 6 and a cam push portion 7. The input shaft portion 6 passes through the housing 5 and extends to the outside of the damping cavity 51. The cam push portion 7 is connected to one end of the input shaft portion 6 and is located inside the damping cavity 51 and forms a movable cavity 1.

[0126] Specifically, such as Figures 2-3 As shown, by inserting the input shaft 6 through the housing 5, the cam member 100 can be mounted on the housing 5, and the input shaft 6 can rotate relative to the housing 5, thus enabling the cam member 100 to rotate relative to the housing 5. The upper end of the input shaft 6 extends to the outside of the damping cavity 51, facilitating connection of the input shaft 6 to other components within the damper 200 from outside the damping cavity 51. Simultaneously, the lower end of the input shaft 6 is connected to the cam pusher 7, allowing the cam member 100 to rotate. As a whole, it can improve the overall structural strength of the cam component 100, and make the cam pusher 7 rotate under the drive of the input shaft 6. Furthermore, by setting the cam pusher 7 in the damping cavity 51, the cam pusher 7 can rotate relative to the housing 5 inside the damping cavity 51. The cam pusher 7 also forms a movable cavity 1, so that the cam pusher 7 can be installed and cooperated with the driven shaft 3, thereby allowing the cam pusher 7 to drive the driven shaft 3 to move in the first direction within the damping cavity 51 by pushing the guide rail 11.

[0127] In some embodiments, the input shaft portion 6 includes a first shaft segment 61 and a second shaft segment 62, one end of the first shaft segment 61 being connected to the cam push portion 7 and the other end being connected to the second shaft segment 62.

[0128] Specifically, such as Figure 4 As shown, by connecting the lower end of the first shaft segment 61 to the cam pusher 7, the connection between the input shaft 6 and the cam pusher 7 can be achieved through the first shaft segment 61, making the cam member 100 a whole. Furthermore, by connecting the upper end of the first shaft segment 61 to the second shaft segment 62, the input shaft 6 can be made a whole, which can improve the structural strength of the input shaft 6, and further improve the overall structural strength of the cam member 100.

[0129] The second shaft segment 62 passes through the housing 5 and is rotatably supported on the housing 5 by the bearing 8. The outer diameter of the first shaft segment 61 is larger than the outer diameter of the second shaft segment 62. The bearing 8 is axially limited and pressed between the end face of the first shaft segment 61 and the inner end face of the housing 5.

[0130] Specifically, by passing the second shaft segment 62 through the housing 5, the input shaft 6 can be passed through the housing 5, enabling the cam member 100 to be installed on the housing 5. Furthermore, by supporting the second shaft segment 62 on the housing 5 via the bearing member 8, the second shaft segment 62 can be passed through the bearing member 8, allowing the second shaft segment 62 to be installed on the housing 5. The second shaft segment 62 can rotate relative to the housing 5 via the bearing member 8, allowing the cam member 100 to rotate relative to the housing 5. Additionally, the second shaft segment 62 can radially limit the bearing member 8. Simultaneously, by making the outer diameter of the first shaft segment 61 larger than the outer diameter of the second shaft segment 62, the first shaft segment 61 can axially limit the bearing member 8. The bearing member 8 is axially limited and pressed against the end face of the first shaft segment 61 and the inner end face of the housing 5, thus enabling the installation of the bearing member 8 and further limiting its axial position, ensuring the accuracy of the bearing member 8's installation position and the reliability of its operation.

[0131] In some embodiments, the housing 5 is formed with a mounting groove 53 communicating with the end of the vibration damping cavity 51, and a stop limiting surface 531 is formed in the mounting groove 53.

[0132] Specifically, the mounting groove 53 is used to provide a mounting position for the bearing component 8 so as to realize the installation of the bearing component 8 on the housing 5. The mounting groove 53 is set at the end of the vibration damping cavity 51 so that when the second shaft section 62 extends upward out of the vibration damping cavity 51, it can pass through the bearing component 8 at the same time so as to connect the bearing component 8 to the housing 5. In addition, the mounting groove 53 forms a stop limiting surface 531, which can axially limit the bearing component 8 to ensure the accuracy of the installation position of the bearing component 8.

[0133] The bearing component 8 is installed in the mounting groove 53, and the bearing component 8 includes a second inner ring portion 81, a second outer ring portion 82 and a second rolling element 83 located between the second inner ring portion 81 and the second outer ring portion 82. The second inner ring portion 81 is axially limited and presses against the end face of the first shaft segment 61, and the second outer ring portion 82 is axially limited and presses against the stop limiting surface 531.

[0134] Specifically, the bearing component 8 is installed in the mounting groove 53 to achieve the installation of the bearing component 8. The bearing component 8 includes a second inner ring portion 81, a second outer ring portion 82, and a second rolling element 83. Even if the bearing component 8 can be a ball bearing, the second inner ring portion 81 is pressed axially against the end face of the first shaft segment 61, which axially limits the bearing component 8. The second outer ring portion 82 is pressed axially against the stop limiting surface 531, which further axially limits the bearing component 8. The stop limiting surface 531 and the end face of the first shaft segment 61 are spaced apart axially along the bearing component 8. The first shaft segment 61 and the stop limiting surface 531 jointly axially limit the bearing component 8 at both ends, ensuring the accuracy of the bearing component 8's installation position and thus improving the reliability of the bearing component 8's operation.

[0135] In some embodiments, the housing 5 includes a first end cap 54, a main housing 55, and a second end cap 56. The first end cap 54 and the second end cap 56 are respectively connected to the two ends of the main housing 55 to define the vibration damping cavity 51 together with the main housing 55, and the first end cap 54 and the second end cap 56 are distributed opposite each other along a first direction.

[0136] Specifically, the first end cap 54 and the second end cap 56 are connected through the main body shell 55 to make the shell 5 a whole, which can improve the overall structural strength of the shell 5. Connecting the first end cap 54 and the second end cap 56 to both ends of the main body shell 55 respectively allows for sealing of the main body shell 55 from both ends, preventing rainwater, dust, etc., from entering the damping cavity 51 and affecting the damping function of the shock absorber 200. It also prevents flying stones, mud, etc., from entering the damping cavity 51 during vehicle operation, thus preventing the shock absorber 200 from failing. Simultaneously, the first end cap 54, the second end cap 56, and the main body shell 55 together form the damping cavity 51 for housing the cam member 100 and the driven shaft 3, and, as... Figure 2 , Figures 12-13 As shown, the first end cap 54 is disposed above the main body shell 55, and the second end cap 56 is disposed below the main body shell 55, so that the first end cap 54 and the second end cap 56 are distributed opposite each other along the first direction to seal the upper and lower end surfaces of the main body shell 55.

[0137] The cam 100 is rotatably mounted on the first end cover 54, and the driven shaft 3 is movably mounted on the second end cover 56.

[0138] Specifically, by passing the cam member 100 through the first end cover 54, the cam member 100 can be installed on the housing 5, and the cam member 100 can rotate relative to the first end cover 54. Even though the cam member 100 can rotate relative to the housing 5, by passing the driven shaft 3 through the second end cover 56, the driven shaft 3 can be installed on the housing 5, and the driven shaft 3 can move relative to the second end cover 56. Even though the driven shaft 3 can move relative to the housing 5, the cam member 100 can be positioned above the driven shaft 3, so that the cam member 100 can drive the driven shaft 3 to move.

[0139] In some embodiments, the first end of the main body shell 55 is provided with a mounting base 551, and the mounting base 551 is provided with a mounting groove 53 communicating with the vibration damping cavity 51. The cam member 100 is supported on the main body shell 55 by a bearing member 8 provided in the mounting groove 53, and the first end cover 54 is detachably connected to the mounting base 551.

[0140] Specifically, such as Figures 2-3 and Figure 13 As shown, a mounting base 551 is provided at the upper end of the main body shell 55. A mounting groove 53 is provided within the mounting base 551. The mounting groove 53 provides a mounting position for the bearing component 8, enabling its installation. The mounting groove 53 connects to the damping cavity 51, allowing the cam component 100 to extend from inside the damping cavity 51 along the mounting groove 53 to the outside of the damping cavity 51. Simultaneously, the cam component 100 can pass through the bearing component 8 and be supported by the bearing component 8 on the main body shell 55, allowing the cam 2 to connect with the shell via the bearing component 8. The bearing 8 is connected to the housing 5 and can rotate relative to the housing 5. The first end cover 54 is detachably connected to the mounting base 551, which facilitates the connection or separation of the first end cover 54 and the mounting base 551. When the first end cover 54 is connected to the mounting base 551, the mounting groove 53 can be sealed to prevent rainwater, dust, etc. from entering the bearing 8 and causing damage or failure of the bearing 8. When the first end cover 54 is separated from the mounting base 551, the bearing 8 can be installed or removed.

[0141] The main body shell 55 can be connected to the first end cover 54 by bolts 17. The connection method is simple and reliable, and multiple bolts 17 can be set to improve the connection reliability between the main body shell 55 and the first end cover 54.

[0142] And / or, the second end cap 56 includes a disc portion 561 and a sleeve portion 562. The disc portion 561 is detachably connected to the second end of the main body shell 55. The sleeve portion 562 is located in the central region of the disc portion 561, and the sleeve portion 562 is provided with a through hole 52 that extends axially. The driven shaft 3 is movably inserted through the through hole 52.

[0143] Specifically, the second end cap 56 is located below the main body shell 55, making the disc portion 561 detachably connected to the main body shell 55. This facilitates connecting or separating the disc portion 561 and the main body shell 55. When the disc portion 561 is connected to the main body shell 55, the second end cap 56 is connected to the main body shell 55. When the disc portion 561 is separated from the main body shell 55, the damping cavity 51 is opened downwards, facilitating the installation of the cam member 100 and the driven shaft 3 inside the damping cavity 51. At the same time, the sleeve portion 562 is located in the middle of the disc portion 561, and a through hole 52 is provided on the sleeve portion 562. The through hole 52 is axially through, facilitating the extension of the driven shaft 3 from the through hole 52 and allowing the driven shaft 3 to move relative to the sleeve portion 562. That is, the through hole 52 can be used to guide the movement of the driven shaft 3, thereby improving the reliability of the driven shaft 3 moving in the first direction.

[0144] The main body shell 55 can be connected to the second end cover 56 by bolts 17. The connection method is simple and reliable. The number of bolts 17 can be multiple to improve the connection reliability between the main body shell 55 and the second end cover 56. A shoulder is formed at the end of the sleeve portion 562 facing the inside of the vibration damping cavity 51 to limit the support member 4 and ensure the accuracy of the installation position of the support member 4.

[0145] In some embodiments, the damper 200 further includes a damping spring 9, and a lower fork arm 10 is connected to one end of the driven shaft 3 located outside the damping cavity 51. A limiting part 57 is provided on the outer peripheral wall of the housing 5, and the two ends of the damping spring 9 press against the lower fork arm 10 and the limiting part 57 respectively.

[0146] Specifically, the damping spring 9 can play a role in damping vibration. One end of the driven shaft 3 located outside the damping cavity 51 is connected to the lower fork arm 10, and the other end of the lower fork arm 10 is connected to the wheel. When the driven shaft 3 moves under the action of the cam member 100, it can drive the lower fork arm 10 to move, thereby realizing active control of the wheel, realizing the vehicle's vibration damping function, and improving the vehicle's driving control and ride comfort. At the same time, a limiting part 57 is formed on the outer peripheral wall of the housing 5. The limiting part 57 extends radially from the outer peripheral wall of the housing 5, so that the limiting part 57 has a certain length in the radial direction. The two ends of the damping spring 9 are pressed against the lower fork arm 10 and the limiting part 57 respectively. The lower fork arm 10 and the limiting part 57 together limit the damping spring 9, so as to ensure the accuracy of the installation position and the reliability of the operation of the damping spring 9.

[0147] It should be noted that the housing 5 and the limiting part 57 can be directly constructed as one piece to reduce the number of parts and assembly steps. A spring base 91 can be set at the lower fork arm 10 and fixedly connected to the lower fork arm 10 by bolts 17. The spring base 91 is used to limit the vibration damping spring 9. At the same time, a dust cover 92 is also fitted on the end of the driven shaft 3 that extends out of the housing 5. The dust cover 92 can be used to prevent rainwater, mud and sand from entering the vibration damping cavity 51 and damaging the vibration damper 200. The vibration damping spring 9 is fitted on the outside of the dust cover 92, and the dust cover 92 can also be used to limit the vibration damping spring 9 radially to ensure the accuracy of the installation position of the vibration damping spring 9.

[0148] In some embodiments, the outer peripheral wall of the housing 5 is provided with a reinforcing structure 58.

[0149] Specifically, the housing 5 provides a mounting position for the cam component 100 and protects the cam component 100 from damage or failure due to impact, such as... Figure 12 As shown, a reinforcing structure 58 is provided on the outer peripheral wall of the shell 5. The reinforcing structure 58 is used to improve the structural strength of the shell 5. The reinforcing structure 58 is constructed as multiple square protrusions. The multiple square protrusions are evenly distributed on the outer peripheral wall of the shell 5 to uniformly and effectively improve the structural strength of the shell 5.

[0150] In some embodiments, the damper 200 further includes a drive member 16, which is connected to the cam member 100 and is used to drive the cam member 100 to rotate.

[0151] Specifically, the drive member 16 can provide driving force to the connected components. Connecting the drive member 16 to the cam member 100 allows the drive member 16 to provide driving force to the cam member 100 and to drive the cam member 100 to rotate relative to the housing 5. That is, when the drive member 16 is working, it can transmit its own driving force to the cam member 100, causing the cam member 100 to rotate relative to the housing 5 under the drive of the drive member 16, thereby driving the driven shaft 3 to move along the first direction. The drive member 16 can be configured as a drive motor.

[0152] Furthermore, it should be noted that the drive component 16 can also be configured as a generator, that is, the drive component 16 can also be used to generate electricity, which can make the driven shaft 3 move relative to the housing 5 along the vertical direction of the vehicle. It can drive the inner wall of the guide rail 11 through the cooperating structure 31 to drive the cam component 100 to rotate, thereby driving the drive component 16 to run and generate electricity. In new energy vehicles, the electricity generated by the drive component 16 can be used to drive the vehicle to run, thereby improving the vehicle's range.

[0153] It should be noted that during vehicle operation, due to uneven road surfaces, there is relative movement between the vehicle body and wheel components. The shock absorber 200 can play a role in damping and buffering between the vehicle body and wheel components. The drive component 16 is configured as a generator. As the wheel components move relative to the vehicle body and the cam component 100, the driven shaft 3 of the shock absorber 200 continuously moves relative to the cam component 100, thereby continuously driving the cam component 100 to rotate, thus continuously generating electricity using the drive component 16. Therefore, the vibration generated during vehicle movement can be effectively utilized for power generation, achieving vibration energy recovery and improving vehicle economy.

[0154] In some embodiments, the drive member 16 is coaxially arranged with the cam member 100.

[0155] Specifically, the drive member 16 is used to drive the cam member 100 to rotate relative to the housing 5. By setting the drive member 16 and the cam member 100 coaxially, it is easier for the drive member 16 to transmit the driving force to the cam member 100, and it can simplify the structural setup, making the structure compact and the transmission efficiency higher.

[0156] It should be noted that the drive component 16 can be a rotary motor. The relative position between the rotary motor and the cam component 100 can be changed according to the space size and the shape and size of the rotary motor. That is, the rotary motor and the cam component 100 can also be eccentrically set. At the same time, the drive component 16 and the cam component 100 can be spatially separated or integrated into one, both of which can make the drive component 16 drive the cam component 100 to rotate. In addition, the cam component 100 can be connected to the output shaft of the drive component 16 through a spline engagement so that the drive component 16 can drive the cam component 100 to rotate.

[0157] Furthermore, by rationally designing the geometric dimensions of the cam component 100, the vibration damper 200 can effectively achieve low-frequency, large-amplitude Z-axis vibration damping through active control, and can achieve high-frequency, small-amplitude Z-axis vibration damping by controlling the forward or reverse rotation of the drive component 16. This allows the vibration damper 200 to adapt to various working conditions, increasing its applicability.

[0158] In some embodiments, the driven shaft 3 is adapted to extend from the open end 12 of the active cavity 1 into the cam member 100; and / or, the driven shaft 3 and the buffer member 2 in the active cavity 1 are distributed opposite each other along a first direction.

[0159] Specifically, at least a portion of the driven shaft 3 can extend into the movable cavity 1 and connect with the push guide rail 11. One end of the movable cavity 1 is constructed as an open end 12, so that the driven shaft 3 can extend into the movable cavity 1 from the open end 12. At least a portion of the driven shaft 3 can extend into the movable cavity 1 from the open end 12, so that the driven shaft 3 can connect with the push guide rail 11 and move along the first direction under the drive of the push guide rail 11.

[0160] Furthermore, the buffer 2 is used to limit the maximum stroke of the driven shaft 3 when it moves upward. The buffer 2 is distributed opposite to the driven shaft 3 and the active cavity 1 along the first direction to ensure that the buffer 2 can limit the maximum stroke of the driven shaft 3 when it moves upward, so as to effectively avoid damage to the cam 100 or the driven shaft 3 due to excessive compression between the driven shaft 3 and the cam 100.

[0161] The present invention also proposes a vibration reduction system.

[0162] The shock absorption system according to an embodiment of the present invention includes the shock absorber 200 described above. By forming a damping cavity 51 in the housing 5, the cam member 100 and the driven shaft 3 can be installed. Simultaneously, a push guide rail 11 is provided on the cam member 100, and a mating structure 31 is provided on the driven shaft 3. The mating structure 31 can extend into the push guide rail 11 to engage with the cam member 100. Even if the cam member 100 drives the driven shaft 3 to move along a first direction via the push guide rail 11 and the mating structure 31, the vehicle's shock absorption function can be achieved, improving the vehicle's driving control and ride comfort. Furthermore, the overall structure is relatively simple, reducing the production and manufacturing costs of the shock absorber 200. The use of mechanical transmission effectively improves transmission efficiency, i.e., increases response speed, which is beneficial for improving user satisfaction.

[0163] The present invention also proposes a vehicle.

[0164] The vehicle according to embodiments of the present invention includes the shock absorber 200 as described above, or includes the shock absorption system described above. By installing the shock absorber 200 or the shock absorption system on the vehicle, the vehicle's vibration reduction function can be realized, improving the vehicle's driving control and ride comfort, while also reducing production and manufacturing costs, improving response speed, and ultimately enhancing user satisfaction.

[0165] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0166] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cam member, characterized by, The cam member is provided with a movable cavity (1) formed therein, and the movable cavity (1) is provided with a pushing guide rail (11) adapted to be connected with a driven shaft (3) and drive the driven shaft (3) to move in a first direction.

2. The cam member of claim 1, wherein The cam member is provided to be rotatable, and the cam member is adapted to drive the driven shaft (3) to move in the first direction through the pushing guide rail (11) when rotating.

3. The cam member of claim 1, wherein The pushing guide rail (11) is formed on the inner circumferential wall of the movable cavity (1), and the pushing guide rail (11) is recessed radially outward on the inner circumferential wall of the movable cavity (1).

4. The cam member of claim 1 wherein, The pushing guide rail (11) is configured as a helical groove extending in the first direction.

5. The cam member of claim 4, wherein, The pushing guide rail (11) is two, and the two pushing guide rails (11) are oppositely distributed in the radial direction of the cam member.

6. The cam member of claim 1 wherein, The movable cavity (1) is configured as an open end (12) at one end in the first direction.

7. The cam member of claim 6, wherein The movable cavity (1) is configured as a closed end (13) at the other end in the first direction.

8. The cam member of claim 7, wherein, The inner side of the closed end (13) is provided with a buffer member (2).

9. A damper characterized by, Comprise: The cam member of any one of claims 1-8, the cam member is adapted to be connected with a first part to be damped; A driven shaft (3) is in transmission cooperation with the cam member to move in the first direction under the driving of the cam member.

10. The damper of claim 9, wherein At least part of one end of the driven shaft (3) extends into the movable cavity (1) and is in transmission cooperation with the cam member, and the other end of the driven shaft (3) is adapted to be connected with a second part to be damped.

11. The damper of claim 9, wherein The driven shaft (3) is provided with a matching structure (31) matched with the pushing guide rail (11), and at least part of the matching structure (31) extends into the pushing guide rail (11).

12. The damper of claim 11, wherein The inner circumferential wall of the movable cavity (1) is provided with the pushing guide rail (11), and the outer circumferential wall of the driven shaft (3) is provided with the matching structure (31).

13. The damper of claim 11, wherein One end of the matching structure (31) is fixedly connected to the driven shaft (3), and the other end of the matching structure (31) is provided with a rotating part (311) in rolling cooperation with the pushing guide rail (11).

14. The damper of claim 13, wherein The rotating part (311) comprises a first inner ring part (3111), a first outer ring part (3112) and a first rolling member (3113) mounted between the first inner ring part (3111) and the first outer ring part (3112), the driven shaft (3) is provided with a mounting shaft (32), the first inner ring part (3111) is connected to the mounting shaft (32), and the first outer ring part (3112) cooperates with the inner wall of the pushing guide rail (11).

15. The damper of claim 14, wherein The first inner ring part (3111) is fixedly sleeved on the outside of the mounting shaft (32).

16. The damper of claim 11, wherein The pushing guide rail (11) and the matching structure (31) are both provided in plurality and one-to-one cooperation, and the plurality of matching structures (31) are distributed in the circumferential direction of the damper. Or, the pushing guide rail (11) and the matching structure (31) are both provided as two and matched one by one, and the two matching structures (31) are distributed in the radial direction of the damper.

17. The damper of claim 9, wherein The movable cavity (1) is provided with a support (4), and the driven shaft (3) is connected with the cam member through the support (4).

18. The damper of claim 9, wherein Further comprising: The shell (5) is formed with a damping cavity (51) in the shell (5), at least part of the cam member is located in the damping cavity (51), and at least part of the driven shaft (3) is located in the damping cavity (51) and matched with the cam member.

19. The damper of claim 18, wherein The driven shaft (3) comprises a matching shaft section (33) and a mounting shaft section (34), the outer diameter of the matching shaft section (33) is greater than that of the mounting shaft section (34), the matching shaft section (33) is matched with the cam member, and the mounting shaft section (34) is arranged in the shell (5) along the first direction.

20. The damper of claim 19, wherein The matching shaft section (33) is located in the movable cavity (1), one end of the mounting shaft section (34) is located in the movable cavity (1) and connected with the matching shaft section (33) along the first direction, and the other end of the mounting shaft section (34) extends out of the shell (5).

21. The damper of claim 19, wherein The shell (5) is provided with a through hole (52) for arranging the mounting shaft section (34), one of the outer peripheral wall of the mounting shaft section (34) and the inner peripheral wall of the through hole (52) is provided with a guide convex rib (341), and the other is provided with a guide limiting groove, and the guide convex rib (341) and the guide limiting groove are guided and matched along the first direction.

22. The damper of claim 18, wherein The cam member comprises an input shaft part (6) and a cam pushing part (7), the input shaft part (6) is arranged in the shell (5) and extends out of the damping cavity (51), the cam pushing part (7) is connected with one end of the input shaft part (6), and the cam pushing part (7) is located in the damping cavity (51) and forms the movable cavity (1).

23. The damper of claim 22, wherein The input shaft part (6) comprises a first shaft section (61) and a second shaft section (62), one end of the first shaft section (61) is connected with the cam pushing part (7), and the other end is connected with the second shaft section (62); Wherein, the second shaft section (62) is arranged in the shell (5) and rotatably supported on the shell (5) through a bearing member (8), the outer diameter of the first shaft section (61) is greater than that of the second shaft section (62), and the bearing member (8) is limited and pressed between the end face of the first shaft section (61) and the inner end face of the shell (5) in the axial direction.

24. The damper of claim 23, wherein The shell (5) is formed with a mounting groove (53) communicated with the end of the damping cavity (51), and a stop limiting face (531) is formed in the mounting groove (53); The bearing piece (8) is mounted in the mounting groove (53), and the bearing piece (8) comprises a second inner ring part (81), a second outer ring part (82) and a second rolling element (83) located between the second inner ring part (81) and the second outer ring part (82), the second inner ring part (81) is limited and pressed on the end face of the first shaft section (61) in the axial direction, and the second outer ring part (82) is limited and pressed on the stop limiting face (531) in the axial direction.

25. The damper of claim 18, wherein, The shell (5) comprises a first end cover (54), a main body shell (55) and a second end cover (56), the first end cover (54) and the second end cover (56) are respectively connected to the two ends of the main body shell (55) to jointly define the damping cavity (51) with the main body shell (55), and the first end cover (54) and the second end cover (56) are distributed in the first direction. The cam piece is rotatably penetrated in the first end cover (54), and the driven shaft (3) is movably penetrated in the second end cover (56).

26. The damper of claim 25, wherein The first end of the main body shell (55) is provided with a mounting seat part (551), the mounting seat part (551) is provided with a mounting groove (53) communicating with the damping cavity (51), the cam piece is supported on the main body shell (55) through the bearing piece (8) provided in the mounting groove (53), and the first end cover (54) is detachably connected to the mounting seat part (551). And / or, the second end cover (56) comprises a disc body part (561) and a sleeve part (562), the disc body part (561) is detachably connected to the second end of the main body shell (55), the sleeve part (562) is located in the central region of the disc body part (561), and the sleeve part (562) is provided with the penetrating hole (52) penetrating in the axial direction, and the driven shaft (3) is movably penetrated in the penetrating hole (52).

27. The damper of claim 18, wherein Further comprising a damping spring (9), one end of the driven shaft (3) located outside the damping cavity (51) is connected with a lower fork arm (10), the outer peripheral wall of the shell (5) is provided with a limiting part (57), and the two ends of the damping spring (9) are respectively pressed against the lower fork arm (10) and the limiting part (57).

28. The damper of claim 18, wherein The outer peripheral wall of the shell (5) is provided with a reinforcing structure (58).

29. The damper of claim 9, wherein Further comprising a driving piece (16), the driving piece (16) is connected with the cam piece, and the driving piece (16) is used for driving the cam piece to rotate.

30. The damper of claim 29, wherein The driving piece (16) is coaxially arranged with the cam piece.

31. The damper of claim 9, wherein The driven shaft (3) is adapted to extend from the open end (12) of the movable cavity (1) into the cam piece. And / or, the driven shaft (3) and the buffer piece (2) in the movable cavity (1) are distributed in the first direction.

32. A shock absorption system, characterized by The damping absorber comprises any one of claims 9-31.

33. A vehicle characterized by The damping absorber comprises any one of claims 9-31, or the damping system of claim 32.

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