Cam member, shock absorber, damping system, and vehicle

Abstract

A cam member. A working chamber (1) is formed in the cam member, push guide rails (11) are provided in the working chamber (1), the push guide rails (11) are adapted to be connected and fitted to a driven shaft (3), and the cam member is adapted to drive, by means of the push guide rails (11), the driven shaft (3) to move in a first direction. Also provided are a shock absorber, a damping system, and a vehicle.

Description

Cam member, damper, damping system and vehicle

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 2024113918265, filed on September 30, 2024, entitled “Cam member, damper, damping system and vehicle”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicle manufacturing, in particular to a cam member, a damper with the cam member, a damping system with the damper, and a vehicle with the damper or the damping system. BACKGROUND

[0004] With the continuous progress of people's living standards, comfort has become an important consideration for consumers when choosing a car.

[0005] The damper is a key component of the vehicle, and its role is not only to provide support, but also to improve driving smoothness, thereby improving the comfort of the vehicle during driving. The damper of the related technology is internally provided with a hydraulic structure for height adjustment, but the internal structure of the hydraulic structure is relatively complex, and the setting cost is relatively high, so there is room for improvement. SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the related technology. To this end, the present application provides a cam member, which can realize the damping function of the vehicle, improve the driving controllability and ride comfort of the vehicle, and adopt a mechanical transmission mode, which can improve the transmission efficiency, i.e., improve the response speed, and the overall structure is relatively simple, which can reduce the production cost and manufacturing cost, thereby improving the user satisfaction.

[0007] According to the cam member of the present application, the cam member is internally formed with a movable cavity, the movable cavity is provided with a pushing guide rail, the pushing guide rail is adapted to be connected and matched with a driven shaft, and the cam member is adapted to drive the driven shaft to move in a first direction through the pushing guide rail.

[0008] According to the cam member of the present application, at least part of the driven shaft can be extended into the movable cavity to cooperate with the pushing guide rail on the cam member, so that the cam member can drive the driven shaft to move in the first direction through the pushing guide rail when moving, to realize the damping function of the vehicle, improve the driving controllability and ride comfort of the vehicle, and adopt a mechanical transmission mode, which can improve the transmission efficiency, i.e., improve the response speed, and the overall structure is relatively simple, which can reduce the production cost and manufacturing cost, thereby improving the user satisfaction.

[0009] The cam member is rotatable, and is adapted to drive the driven shaft to move in the first direction by the pushing guide rail when rotating.

[0010] The pushing guide rail is formed on the inner circumferential wall of the movable cavity, and is concave radially outward.

[0011] The pushing guide rail is a helical groove extending spirally in the first direction.

[0012] The cam member comprises two pushing guide rails, and the two pushing guide rails are oppositely distributed in the radial direction of the cam member.

[0013] One end of the movable cavity in the first direction is an open end.

[0014] The other end of the movable cavity in the first direction is a closed end.

[0015] The inner side of the closed end is provided with a buffer member.

[0016] The application further provides a damper.

[0017] The damper comprises the cam member of any one of the above, and the cam member is adapted to be connected with a first part to be damped. The driven shaft is in transmission cooperation with the cam member, and is adapted to move in the first direction under the driving of the cam member.

[0018] The damper comprises the cam member of any one of the above, and the cam member is adapted to be connected with a first part to be damped. The driven shaft is in transmission cooperation with the cam member, and is adapted to move in the first direction under the driving of the cam member.

[0019] The damper comprises the cam member of any one of the above, and the cam member is adapted to be connected with a first part to be damped. The driven shaft is in transmission cooperation with the cam member, and is adapted to move in the first direction under the driving of the cam member.

[0020] The damper comprises the cam member of any one of the above, and the cam member is adapted to be connected with a first part to be damped. The driven shaft is in transmission cooperation with the cam member, and is adapted to move in the first direction under the driving of the cam member.

[0021] The damper comprises the cam member of any one of the above, and the cam member is adapted to be connected with a first part to be damped. The driven shaft is in transmission cooperation with the cam member, and is adapted to move in the first direction under the driving of the cam member.

[0022] According to the damper, the rotating part comprises a first inner ring part, a first outer ring part and a first rolling element mounted between the first inner ring part and the first outer ring part, the driven shaft is provided with a mounting shaft, the first inner ring part is connected to the mounting shaft, and the first outer ring part is matched with the inner wall of the push guide rail.

[0023] According to the damper, the first inner ring part is fixedly sleeved on the outside of the mounting shaft.

[0024] According to the damper, the push guide rail and the matching structure are both provided in plurality and matched one by one, the plurality of matching structures are distributed in the circumferential direction of the damper at intervals, or the push guide rail and the matching structure are both provided in two and matched one by one, and the two matching structures are distributed in the radial direction of the damper and face each other.

[0025] According to the damper, the movable cavity is provided with a supporting element, and the driven shaft is connected to the cam element through the supporting element.

[0026] According to the damper, the damper further comprises a housing, a damping cavity is formed in the housing, at least part of the cam element is located in the damping cavity, and at least part of the driven shaft is located in the damping cavity and matched with the cam element.

[0027] According to the damper, the driven shaft comprises a matching shaft segment and a mounting shaft segment, the outer diameter of the matching shaft segment is greater than the outer diameter of the mounting shaft segment, the matching shaft segment is matched with the cam element, and the mounting shaft segment is arranged in the housing along the first direction.

[0028] According to the damper, the matching shaft segment is located in the movable cavity, one end of the mounting shaft segment is located in the movable cavity and connected to the matching shaft segment along the first direction, and the other end of the mounting shaft segment extends out of the housing.

[0029] According to the damper, the housing is provided with a penetrating hole for penetrating the mounting shaft segment, one of the outer peripheral wall of the mounting shaft segment and the inner peripheral wall of the penetrating hole is provided with a guide convex rib, and the other is provided with a guide limiting groove, and the guide convex rib and the guide limiting groove are guided and matched along the first direction.

[0030] According to the damper, the cam element comprises an input shaft part and a cam pushing part, the input shaft part is arranged in the housing and extends out of the damping cavity, the cam pushing part is connected to one end of the input shaft part, and the cam pushing part is located in the damping cavity and forms the movable cavity.

[0031] According to the damper of the embodiment of the present application, the input shaft part comprises a first shaft section and a second shaft section, one end of the first shaft section is connected with the cam pushing part and the other end is connected with the second shaft section; wherein the second shaft section is arranged through the shell and is rotatably supported on the shell by a bearing part, the outer diameter of the first shaft section is larger than the outer diameter of the second shaft section, and the bearing part is limited and pressed between the end surface of the first shaft section and the inner end surface of the shell in the axial direction.

[0032] According to the damper of the embodiment of the present application, the shell is formed with a mounting groove communicated with the end of the damping chamber, a stop limiting surface is formed in the mounting groove; the bearing part is mounted in the mounting groove, and the bearing part comprises a second inner ring part, a second outer ring part and a second rolling part between the second inner ring part and the second outer ring part, the second inner ring part is limited and pressed on the end surface of the first shaft section in the axial direction, and the second outer ring part is limited and pressed on the stop limiting surface in the axial direction.

[0033] According to the damper of the embodiment of the present application, the shell comprises 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 jointly define the damping chamber with the main body shell, and the first end cover and the second end cover are distributed in the first direction; the cam part is rotatably arranged through the first end cover, and the driven shaft is movably arranged through the second end cover.

[0034] According to the damper of the embodiment of the present application, the first end of the main body shell is provided with a mounting seat part, the mounting seat part is provided with a mounting groove communicated with the damping chamber, the cam part is supported on the main body shell through a bearing part arranged in the mounting groove, and the first end cover is detachably connected to the mounting seat part; and / or, the second end cover comprises a disc body part and a sleeve part, the disc body 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 body part, the sleeve part is provided with the through hole penetrating in the axial direction, and the driven shaft is movably arranged through the through hole.

[0035] According to the damper of the embodiment of the present application, a damping spring is further arranged, one end of the driven shaft located outside the damping chamber is connected with a lower fork arm, the outer peripheral wall of the shell is provided with a limiting part, and the two ends of the damping spring are respectively pressed against the lower fork arm and the limiting part.

[0036] According to the damper of the embodiment of the present application, the outer peripheral wall of the shell is provided with a reinforcing structure.

[0037] According to the damper of the embodiment of the present application, a driving part is further arranged, the driving part is connected with the cam part, and the driving part is used for driving the cam part to rotate.

[0038] According to the damper provided in the embodiment of the present application, the driving member is coaxially arranged with the cam member.

[0039] According to the damper provided in the embodiment of the present application, the driven shaft is adapted to extend from the open end of the movable cavity into the cam member; and / or, the driven shaft is distributed in the first direction opposite to the buffer member in the movable cavity.

[0040] The present application further provides a damping system.

[0041] According to the damping system provided in the embodiment of the present application, the damping system comprises the damper provided in any one of the above.

[0042] The present application further provides a vehicle.

[0043] According to the vehicle provided in the embodiment of the present application, the vehicle comprises the damper provided in any one of the above, or comprises the damping system provided in the above.

[0044] The vehicle, the damping system, the damper and the cam member provided in the above have the same advantages over the related art, which will not be repeated here.

[0045] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0046] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0047] Fig. 1 is a structural schematic view of a damper according to an embodiment of the present application;

[0048] Fig. 2 is a sectional schematic view of A-A in Fig. 1;

[0049] Fig. 3 is a partial enlarged view of B in Fig. 2;

[0050] Fig. 4 is a structural schematic view of a cam member according to an embodiment of the present application;

[0051] Fig. 5 is a sectional schematic view of C-C in Fig. 4;

[0052] Fig. 6 is a sectional schematic view of D-D in Fig. 4;

[0053] Fig. 7 is a structural schematic view of a driven shaft according to an embodiment of the present application;

[0054] Fig. 8 is a structural schematic view of a driven shaft according to an embodiment of the present application;

[0055] Fig. 9 is a schematic view of a profile line of a pushing guide rail according to an embodiment of the present application;

[0056] Figure 10 is a schematic diagram of the outline of the push guide rail according to an embodiment of this application;

[0057] Figure 11 is a schematic diagram of the outline of the push guide rail according to an embodiment of this application;

[0058] Figure 12 is a schematic diagram of the structure of the housing according to an embodiment of this application;

[0059] Figure 13 is a cross-sectional schematic diagram of the housing according to an embodiment of this application;

[0060] Figure 14 is a second structural schematic diagram of a cam component according to an embodiment of this application;

[0061] Figure 15 is a structural schematic diagram of the cam component according to an embodiment of this application;

[0062] Figure 16 is a schematic diagram of the position of a shock absorber in a vehicle according to an embodiment of this application.

[0063] Reference numerals: Cam 100, Shock absorber 200, Vehicle 300, Movable cavity 1, Push guide rail 11, Open end 12, Closed end 13, Buffer 2, Driven shaft 3, Mating structure 31, Rotating part 311, First inner ring part 3111, First outer ring part 3112, First rolling part 3113, Mounting shaft 32, Mating shaft section 33, Mounting shaft section 34, Guide rib 341, Support 4, Housing 5, Shock-absorbing cavity 51, Through hole 52, Guide limiting groove 521, Mounting groove 53, Stop limiting surface 531, First end cover 54, Main body shell 55, Mounting seat Part 551, second end cap 56, disc part 561, sleeve part 562, limiting part 57, reinforcing structure 58, input shaft part 6, first shaft section 61, second shaft section 62, cam push part 7, bearing part 8, second inner ring part 81, second outer ring part 82, second rolling part 83, damping spring 9, spring base 91, dust cover 92, lower fork arm 10, drive part 16, bolt 17, contour line 18, trigonometric function segment 181, straight line segment 182, arc segment 183, horizontal segment 184. Detailed Implementation

[0064] The embodiments of this application 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 this application, and should not be construed as limiting this application.

[0065] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the features defined as "first" and "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0066] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e. the X direction; the left-right direction is the lateral direction of the vehicle, i.e. the Y direction; the up-down direction is the vertical direction of the vehicle, i.e. the Z direction.

[0068] The cam member 100 according to the embodiments of the present application is described below with reference to FIGS. 1-16. By forming a movable cavity 1 in the cam member 100, at least part 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, so that when the cam member 100 moves, the driven shaft 3 can be driven by the push guide rail 11 to move in the first direction, thereby achieving the damping function of the vehicle 300, improving the driving controllability and ride comfort of the vehicle 300, and using mechanical transmission, which can improve transmission efficiency, i.e. improve response speed, and the overall structure is relatively simple, which can reduce production cost and manufacturing cost, and is beneficial to improve user satisfaction.

[0069] As shown in FIGS. 1-15, according to one embodiment of the present application, the cam member 100 is formed with a movable cavity 1, and the movable cavity 1 is provided with a push guide rail 11 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 in the first direction through the push guide rail 11.

[0070] The cam member 100 is configured as a columnar body, and the movable cavity 1 is formed in the cam member 100. The movable cavity 1 is configured as a hollow cavity and can be used to accommodate other components. The push guide rail 11 is arranged in the movable cavity 1. At least part of the driven shaft 3 can extend into the movable cavity 1, so that the push guide rail 11 can be connected and matched with the driven shaft 3 in the movable cavity 1. That is, the cam member 100 and the driven shaft 3 can be matched by the push guide rail 11 in the movable cavity 1, so that power can be transmitted between the cam member 100 and the driven shaft 3. That is, 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.

[0071] In addition, the cam member 100 can drive the driven shaft 3 to move in the first direction through the push guide rail 11. That is, when the cam member 100 moves, the push guide rail 11 in the cam member 100 can drive the driven shaft 3 to move in the first direction. The first direction is the axial direction of the cam member 100, that is, the up-down direction. That is, the cam member 100 can drive the driven shaft 3 to move in the up-down direction through the push guide rail 11. When the cam member 100 and the driven shaft 3 are respectively connected with the vehicle body and the vehicle wheel, the vibration energy of the vehicle 300 can be absorbed by the movement of the cam member 100 and the driven shaft 3. That is, the vibration reduction function of the vehicle 300 can be achieved. In addition, the overall structure is relatively simple, and the production cost and manufacturing cost can be reduced.

[0072] According to the cam member 100 provided in the embodiments of the present application, the movable cavity 1 is formed in the cam member 100. At least part of the driven shaft 3 can extend into the movable cavity 1 and be matched with the push guide rail 11 on the cam member 100. When the cam member 100 moves, the driven shaft 3 can be driven to move in the first direction through the push guide rail 11. The vibration reduction function of the vehicle 300 can be achieved, the driving controllability and the riding comfort of the vehicle 300 can be improved, the transmission efficiency can be improved, that is, the response speed can be improved, the overall structure is relatively simple, the production cost and the manufacturing cost can be reduced, and the user satisfaction can be improved.

[0073] In some embodiments, the cam member 100 is configured to be rotatable, and the cam member 100 is adapted to drive the driven shaft 3 to move in the first direction through the push guide rail 11 when the cam member 100 rotates.

[0074] The movable cavity 1 is formed in the cam member 100, and the push guide rail 11 is arranged in the movable cavity 1. The push guide rail 11 can be connected and matched 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. In addition, the cam member 100 is configured to be rotatable. That is, the cam member 100 can drive the driven shaft 3 to move in the first direction through the push guide rail 11 when the cam member 100 rotates. The vibration energy of the vehicle 300 can be absorbed, so that the vibration reduction function of the vehicle 300 can be achieved.

[0075] In some embodiments, 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.

[0076] In some embodiments, 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.

[0077] In some embodiments, the pushing guide rail 11 is configured as a helical groove extending in the first direction.

[0078] In some embodiments, 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.

[0079] In the embodiments shown in FIG. 2, FIG. 9-FIG. 10, the center line of the spiral groove is helical, and is the movement path of the part of the driven shaft 3 connected and matched with the push guide rail 11 in the push guide rail 11. The part of the driven shaft 3 matched with the push guide rail 11 can reciprocate along the spiral groove. As shown in FIG. 11, which is a profile line 18 of the spiral groove in a planar expanded schematic view, the profile line 18 is divided into a trigonometric function segment 181, a circular arc segment 183 and a straight line segment 182. The trigonometric function segment 181 corresponds to the movement range of the part of the driven shaft 3 matched with the push guide rail 11 in the normal movement process in the cam member 100. There is a small horizontal segment 184 with a slope close to zero at both ends of the trigonometric function segment 181. The horizontal segment 184 is used to control the limit position of the driven shaft 3 in the up and down strokes. When the driven shaft 3 moves to the limit position of the up and down strokes, the movement speed of the driven shaft 3 approaches zero, and the axial force from the outside reaches the maximum value. Therefore, the required movement trajectory at this position is relatively flat, which can maximize the transmission of the axial force while leaving space for the driven shaft 3 to slow down. The circular arc segment 183 can serve as a transition function to connect the trigonometric function segment 181 and the straight line segment 182. The straight line segment 182 is used for assembly. When connecting the driven shaft 3 with the push guide rail 11, the part of the driven shaft 3 matched with the push guide rail 11 can be pushed into the cam member 100 from the straight line segment 182.

[0080] In addition, the push guide rail 11 can also be configured as a wave-shaped groove extending in the circumferential direction of the cam member 100. When the cam member 100 rotates, the part of the driven shaft 3 matched with the push guide rail 11 can slide in the wave-shaped groove and drive the driven shaft 3 to reciprocate in the first direction. It should be noted that configuring the push guide rail 11 as a spiral groove or a wave-shaped groove can achieve bidirectional movement of the driven shaft 3 in the first direction.

[0081] In some embodiments, the push guide rail 11 is two, and the two push guide rails 11 are distributed opposite in the radial direction of the cam member 100.

[0082] It should be noted that the push guide rail 11 is used to drive the driven shaft 3 to move under the action of the cam member 100. As shown in FIG. 6, configuring the push guide rail 11 as two, i.e. both of the two push guide rails 11 can be connected and matched with the driven shaft 3 to drive the driven shaft 3 to move in the first direction simultaneously through the two push guide rails 11, which can improve the reliability of the driven shaft 3 moving in the first direction. In addition, the two push guide rails 11 are distributed opposite in the radial direction of the cam member 100, i.e. the two push guide rails 11 are distributed 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.

[0083] The pushing guide rail 11 can be configured as a helical groove, and the two pushing guide rails 11 are oppositely distributed in the radial direction of the cam piece 100, that is, the two pushing guide rails 11 form a double helix structure, and the double helix structure can drive the driven shaft 3 to move smoothly in the first direction.

[0084] In some embodiments, one end of the movable cavity 1 in the first direction is configured as an open end 12.

[0085] The driven shaft 3 can be connected and matched with the pushing guide rail 11 in the movable cavity 1, 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, that is, at least part of the driven shaft 3 extends into the movable cavity 1 from the open end 12 of the movable cavity 1, so as to be connected and matched with the pushing guide rail 11, and the open end 12 is formed at one end of the movable cavity 1 in the first direction, that is, the upper end or the lower end of the movable cavity 1 in the first direction is configured as the open end, so that the driven shaft 3 can move in the first direction under the driving of the pushing guide rail 11.

[0086] In some embodiments, the other end of the movable cavity 1 in the first direction is configured as a closed end 13.

[0087] It should be noted that one end of the movable cavity 1 in the first direction is configured as an open end 12, so that at least part of the driven shaft 3 can extend into the movable cavity 1 from the open end 12 to be connected and matched with the pushing guide rail 11, so as to move in the first direction under the driving of the pushing guide rail 11, and the other end of the movable cavity 1 in the first direction is configured as a closed end 13, so as to avoid the driven shaft 3 from being pulled out of the movable cavity 1 when moving in the first direction under the driving of the pushing guide rail 11.

[0088] The first direction is the up-down direction, that is, the upper end of the movable cavity 1 is configured as an open end 12, and the lower end is configured as a closed end 13, or the upper end of the movable cavity 1 is configured as a closed end 13, and the lower end is configured as an open end 12, which can meet the connection and matching between the pushing guide rail 11 and the driven shaft 3, so that the pushing guide rail 11 can drive the driven shaft 3 to move in the first direction.

[0089] For example, as shown in FIG. 5, the upper end of the movable cavity 1 is configured as a closed end 13, and the lower end is configured as an open end 12, so that the driven shaft 3 can extend into the movable cavity 1 from below the cam piece 100, so that the pushing guide rail 11 can drive the driven shaft 3 to move in the first direction, and the driven shaft 3 can be prevented from being pulled out of the upper end of the movable cavity 1.

[0090] In some embodiments, the inner side of the closed end 13 is provided with a buffer 2.

[0091] It should be noted that, as shown in FIG. 5, the buffer 2 is arranged on the inner side of the closed end 13, and the buffer 2 can be used to absorb part of the impact energy, so as to reduce the impact on the vehicle 300 and the passengers due to the uneven road surface. In addition, the driven shaft 3 is arranged below the cam member 100, that is, the buffer 2 is arranged on the movement path of the driven shaft 3 in the first direction, so as to limit the maximum stroke of the driven shaft 3 when moving upward by using the buffer 2, and avoid damage to the cam member 100 or the driven shaft 3 due to excessive extrusion between the cam member 100 and the driven shaft 3.

[0092] In the embodiment, the buffer 2 and the cam member 100 can be connected by the bolt 17. The inner threads can be arranged on the cam member 100 and the buffer 2, and the bolt 17 is matched with the inner threads on the cam member 100 and the buffer 2, so as to connect the cam member 100 and the buffer 2. The connection mode is simple, reliable and easy to operate.

[0093] The application further provides a damper 200.

[0094] The damper 200 provided by the application comprises the cam member 100 and the driven shaft 3.

[0095] The cam member 100 is adapted to be connected with a first part to be damped, and the driven shaft 3 is in transmission cooperation with the cam member 100, so as to move in the first direction under the driving of the cam member 100.

[0096] In the embodiment, 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 in transmission cooperation with the driven shaft 3, that is, the power can be transmitted between the cam member 100 and the driven shaft 3, so that the driven shaft 3 can move in the first direction under the driving of the cam member 100. In addition, the cam member 100 can be connected with the first part to be damped, that is, the cam member 100 can be simultaneously connected with the first part to be damped and the driven shaft 3, so as to drive the driven shaft 3 to move through the cam member 100, thereby absorbing the vibration energy on the first part to be damped and reducing the vibration intensity of the first part to be damped. The first part to be damped can be a vehicle body or a vehicle wheel.

[0097] In some embodiments, 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 100, and the other end of the driven shaft 3 is adapted to be connected with a second part to be damped.

[0098] Wherein, at least part of the one end of the driven shaft 3 extends into the movable cavity 1 and is in transmission cooperation with the cam member 100, that is, part or all of the driven shaft 3 extends into the movable cavity 1, so that the driven shaft 3 is connected and cooperated with the push rail 11, that is, the transmission cooperation between the driven shaft 3 and the cam member 100 is realized, so that the power transmission between the cam member 100 and the driven shaft 3 is realized, and then the cam member 100 can drive the driven shaft 3 to move in the first direction through the push rail 11. At the same time, the other end of the driven shaft 3 is connected with the second to-be-damped component, that is, the cam member 100 and the driven shaft 3 are arranged between the first to-be-damped component and the second to-be-damped component, so that the transmission of vibration energy between the first to-be-damped component and the second to-be-damped component is reduced. The first to-be-damped component can be a vehicle body, and the second to-be-damped component can be a vehicle wheel, so that the damping function of the vehicle 300 is realized, the driving controllability and the ride comfort of the vehicle 300 are improved, and the cam member 100 and the second to-be-damped component are respectively connected to the two ends of the driven shaft 3, so that interference between the two is avoided, and the failure of the damper 200 is avoided.

[0099] In some embodiments, the driven shaft 3 is provided with a cooperation structure 31 cooperating with the push rail 11, and at least part of the cooperation structure 31 extends into the push rail 11.

[0100] Wherein, the driven shaft 3 can be connected and cooperated with the push rail 11 inside the movable cavity 1, and the cooperation structure 31 cooperating with the push rail 11 is arranged on the driven shaft 3, that is, when the driven shaft 3 extends into the movable cavity 1, the cooperation structure 31 can be cooperated with the push rail 11 inside the movable cavity 1, and then the cooperation between the push rail 11 and the driven shaft 3 can be realized through the cooperation structure 31. At least part of the cooperation structure 31 can extend into the push rail 11, that is, part or all of the cooperation structure 31 can extend into the push rail 11, so that the installation cooperation between the cam member 100 and the driven shaft 3 is realized through the cooperation between the push rail 11 and the cooperation structure 31, and the cam member 100 can drive the driven shaft 3 to move in the first direction through the push rail 11 and the cooperation structure 31.

[0101] In some embodiments, the inner circumferential wall of the movable cavity 1 is provided with the push rail 11, and the outer circumferential wall of the driven shaft 3 is provided with the cooperation structure 31.

[0102] The cam member 100 is provided with a pushing guide rail 11, and the driven shaft 3 is provided with a matching structure 31, and the driven shaft 3 can extend into the movable cavity 1, so that the matching structure 31 and the pushing guide rail 11 are matched. The pushing guide rail 11 is arranged on the inner circumferential wall of the movable cavity 1, and the matching structure 31 is arranged on the outer circumferential wall of the driven shaft 3, so that the matching structure 31 is close to the pushing guide rail 11, so that the matching structure 31 extends to the inside of the pushing guide rail 11, and the matching structure 31 and the pushing guide rail 11 are matched in the inside of the movable cavity 1. Further, the matching between the cam member 100 and the driven shaft 3 can be realized, and the cam member 100 can drive the driven shaft 3 to move in the first direction.

[0103] In some embodiments, 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 which is in rolling cooperation with the pushing guide rail 11.

[0104] The driven shaft 3 is provided with a matching structure 31, which can extend into the inside of the pushing guide rail 11 and cooperate with the pushing guide rail 11, so that the pushing guide rail 11 can drive the driven shaft 3 to move in the first direction. One end of the matching structure 31 can be fixedly connected to the driven shaft 3, which can improve the reliability of the movement of the driven shaft 3 under the driving of the matching structure 31. Meanwhile, the other end of the matching structure 31 is provided with a rotating part 311 which is in rolling cooperation with the pushing guide rail 11. The rotating part 311 and the driven shaft 3 are respectively connected to the two ends of the matching structure 31 to avoid interference between them, which can prevent the pushing guide rail 11 from driving the driven shaft 3 to move. In addition, the rotating part 311 and the pushing guide rail 11 are in rolling cooperation, so that the cam member 100 can drive the rotating part 311 to roll along the pushing guide rail 11, and the rotating part 311 can drive the driven shaft 3 to move in the first direction.

[0105] In some embodiments, the rotating part 311 includes a first inner ring part 3111, a first outer ring part 3112, and a first rolling part 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.

[0106] It should be noted that, as shown in FIG. 7, the driven shaft 3 is provided with a mounting shaft 32, the mounting shaft 32 is used to be connected with the rotating part 311, the first inner ring part 3111 is connected to the mounting shaft 32, that is, the connection between the rotating part 311 and the driven shaft 3 can be realized through the first inner ring part 3111, and the first outer ring part 3112 is sleeved outside the first inner ring part 3111, and the first rolling element 3113 is mounted between the first outer ring part 3112 and the first inner ring part 3111, so that the first outer ring part 3112 can rotate relative to the first inner ring part 3111 through the first rolling element 3113, that is, the first outer ring part 3112 can rotate relative to the driven shaft 3, and at the same time, the first outer ring part 3112 is matched with the inner wall of the push rail 11, that is, the rolling fit between the rotating part 311 and the push rail 11 can be realized through the first outer ring part 3112, and the first outer ring part 3112 can roll along the inner wall of the push rail 11.

[0107] Therefore, when the cam member 100 rotates, the push rail 11 can drive the first outer ring part 3112 to roll along the inner wall of the push rail 11, and when the first outer ring part 3112 rolls along the push rail 11, the first inner ring part 3111 can drive the driven shaft 3 to move in the first direction, so that the damping function of the vehicle 300 can be realized.

[0108] In some embodiments, the first inner ring part 3111 is fixedly sleeved outside the mounting shaft 32.

[0109] Among them, the first inner ring part 3111 is connected with the mounting shaft 32, which can drive the driven shaft 3 to move in the first direction when the first outer ring part 3112 rolls along the inner wall of the push rail 11, and the first inner ring part 3111 is fixedly sleeved outside the mounting shaft 32, that is, the first inner ring part 3111 and the mounting shaft 32 are 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 part 3111 driving the driven shaft 3 to move in the first direction.

[0110] In some embodiments, the push rail 11 and the matching structure 31 are both provided in plurality and matched one by one, and the plurality of matching structures 31 are distributed in the circumferential direction of the damper 200.

[0111] It should be noted that the cam member 100 is provided with a push guide rail 11, and the driven shaft 3 is provided with a matching structure 31. The cam member 100 can drive the driven shaft 3 to move through the cooperation of the push guide rail 11 and the matching structure 31. The push guide rail 11 and the matching structure 31 are both provided in multiple numbers, so that the cam member 100 can drive the driven shaft 3 to move through the cooperation of the multiple push guide rails 11 and the multiple matching structures 31, which can improve the reliability of the cam member 100 driving the driven shaft 3 to move. In addition, the multiple push guide rails 11 and the multiple matching structures 31 are matched one by one, that is, for each push guide rail 11, there is a matching structure 31 matched therewith, which can effectively improve the reliability of the cooperation between the push guide rail 11 and the matching structure 31. In addition, the multiple matching structures 31 are distributed at intervals in the circumferential direction of the damper 200, which can avoid interference between the multiple matching structures 31 and improve the stability of the cam member 100 driving the driven shaft 3 to move.

[0112] Alternatively, the push guide rail 11 and the matching structure 31 are both provided in two numbers and matched one by one. The two matching structures 31 are distributed in opposition in the radial direction of the damper 200.

[0113] It should be noted that, as shown in FIG. 2, in the damper 200, two push guide rails 11 and two matching structures 31 are provided, so that the cam member 100 can drive the driven shaft 3 to move through the cooperation of the two push guide rails 11 and the two matching structures 31. In addition, the two push guide rails 11 and the two matching structures 31 are matched one by one, that is, each push guide rail 11 can drive the corresponding matching structure 31 to move, which can improve the reliability of the cam member 100 driving the driven shaft 3 to move. In addition, the two matching structures 31 are distributed in opposition in the radial direction of the damper 200, which can separate the two matching structures 31 to avoid interference therebetween and keep the heights of the two matching structures 31 consistent on the driven shaft 3, so as to improve the stability of the cam member 100 driving the driven shaft 3 to move in the first direction.

[0114] In addition, it should be noted that the design of the push guide rail 11 and the matching structure 31 can keep the cam member 100 and the driven shaft 3 always matched, so that there is no idle stroke due to the gap between the push guide rail 11 and the matching structure 31. In addition, the push guide rail 11 and the matching structure 31 are matched one by one, which can avoid abnormal noise and reduce the response time caused by the idle stroke. In addition, multiple push guide rails 11 and multiple driven shafts 3 can be provided in the damper 200, and the multiple driven shafts 3 are connected in parallel, so that the total stress transmitted by the cam member 100 to the driven shaft 3 is decomposed into stresses on the multiple driven shafts 3. As shown in FIGS. 14-15, the cam member 100 provided with one and three push guide rails 11 can drive the driven shaft 3 to move through the push guide rail 11 and the matching structure 31.

[0115] In some embodiments, the movable cavity 1 is provided with a support 4, and the driven shaft 3 is connected with the cam member 100 through the support 4.

[0116] The cam member 100 is formed with the movable cavity 1, and the support 4 is arranged in the movable cavity 1, that is, the support 4 is arranged in the interior of the cam member 100, and the driven shaft 3 is connected with the cam member 100 through the support 4, that is, the support 4 is connected with the cam member 100, so as to realize the installation of the support 4 and ensure the reliability of the work of the support 4. Meanwhile, the support 4 is connected with the driven shaft 3, as shown in FIG. 2, the support 4 is sleeved on the outer side of the driven shaft 3, so that the driven shaft 3 is in sliding fit with the support 4, so as to guide the movement of the driven shaft 3 through the support 4 and ensure that the driven shaft 3 can move in the first direction. The support 4 can be a bearing.

[0117] In some embodiments, the damper 200 further comprises a housing 5, the housing 5 is formed with a damping cavity 51, at least part of the cam member 100 is located in the damping cavity 51, and at least part of the driven shaft 3 is located in the damping cavity 51 and cooperates with the cam member 100.

[0118] The housing 5 is used to provide an installation position for the cam member 100, the housing 5 is formed with the damping cavity 51, and at least part of the cam member 100 is arranged in the damping cavity 51, that is, part or all of the cam member 100 is arranged in the damping cavity 51, so as to realize the installation of the cam member 100 and protect the cam member 100 by using the housing 5, so as to ensure the reliable work of the cam member 100. At least part of the driven shaft 3 is located in the damping cavity 51 and cooperates with the cam member 100, that is, part or all of the driven shaft 3 extends into the movable cavity 1, that is, part or all of the driven shaft 3 can be located in the damping cavity 51, and the driven shaft 3 can cooperate with the cam member 100 in the damping cavity 51, so that the driven shaft 3 can move in the first direction under the driving of the cam member 100, thereby realizing the damping function of the damper 200.

[0119] In some embodiments, the driven shaft 3 comprises a cooperating shaft section 33 and an installation shaft section 34, the outer diameter of the cooperating shaft section 33 is greater than the outer diameter of the installation shaft section 34, the cooperating shaft section 33 cooperates with the cam member 100, and the installation shaft section 34 penetrates the housing 5 in the first direction.

[0120] It should be noted that the mounting shaft section 34 is used to realize the mounting of the driven shaft 3, the matching shaft section 33 is used to realize the matching between the driven shaft 3 and the cam member 100, the mounting shaft section 34 is arranged along the first direction in the shell 5, that is, the mounting of the driven shaft 3 on the shell 5 is realized through the mounting shaft section 34, meanwhile, as shown in FIG. 8, the matching structure 31 is arranged on the outer peripheral wall of the matching shaft section 33, that is, the matching between the driven shaft 3 and the cam member 100 is realized through the matching shaft section 33, and the outer diameter of the matching shaft section 33 is greater than the outer diameter of the mounting shaft section 34, that is, the driven shaft 3 is configured as a T-shaped structure, and the matching shaft section 33 is close to the cam member 100, so that the matching structure 31 on the matching shaft section 33 matches with the pushing guide rail 11 on the cam member 100.

[0121] In some embodiments, 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.

[0122] In some embodiments, 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.

[0123] In some embodiments, 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 protrusion 341, and the other is provided with a guide limiting groove 521, and the guide protrusion 341 and the guide limiting groove 521 are guided and matched along the first direction.

[0124] That is, the mounting shaft section 34 can be inserted into the insertion hole 52 to connect the driven shaft 3 and the housing 5, and a guide protrusion 341 can be arranged on the outer circumferential wall of the mounting shaft section 34, a guide limiting groove 521 can be arranged on the inner circumferential wall of the insertion hole 52, or the guide limiting groove 521 can be arranged on the outer circumferential wall of the mounting shaft section 34, and the guide protrusion 341 can be arranged on the inner circumferential wall of the insertion hole 52, so that the guide protrusion 341 can slide in the guide limiting groove 521 in the first direction, that is, the guide protrusion 341 can extend in the first direction, and the sliding of the guide protrusion 341 in the guide limiting groove 521 can guide the movement of the driven shaft 3 in the first direction, thereby ensuring the reliability of the movement of the driven shaft 3 in the first direction.

[0125] In the embodiment shown in FIGS. 7-8, the guide protrusion 341 is arranged on the outer circumferential wall of the mounting shaft section 34, the guide limiting groove 521 is formed on the inner circumferential wall of the insertion hole 52, and the guide protrusion 341 can slide along the guide limiting groove 521, so that the self-rotation of the driven shaft 3 during the movement in the first direction can be avoided, thereby improving the transmission efficiency.

[0126] In some embodiments, the cam member 100 includes an input shaft portion 6 and a cam pushing portion 7, the input shaft portion 6 is inserted into the housing 5 and extends out of the damping cavity 51, and the cam pushing portion 7 is connected to one end of the input shaft portion 6 and is arranged in the damping cavity 51 and forms the movable cavity 1.

[0127] It should be noted that, as shown in FIGS. 2-3, the input shaft portion 6 is inserted into the housing 5, so that the cam member 100 can be mounted on the housing 5 through the input shaft portion 6, the input shaft portion 6 can rotate relative to the housing 5, so that the cam member 100 can rotate relative to the housing 5, the upper end of the input shaft portion 6 extends out of the damping cavity 51, so that the input shaft portion 6 can be connected to other components in the damper 200 outside the damping cavity 51, the lower end of the input shaft portion 6 is connected to the cam pushing portion 7, so that the cam member 100 is an integral whole, the structural strength of the cam member 100 as a whole can be improved, the cam pushing portion 7 can rotate under the drive of the input shaft portion 6, the cam pushing portion 7 is arranged in the damping cavity 51, so that the cam pushing portion 7 can rotate relative to the housing 5 inside the damping cavity 51, the cam pushing portion 7 forms the movable cavity 1, so that the cam pushing portion 7 can be mounted and matched with the driven shaft 3, and the cam pushing portion 7 can drive the driven shaft 3 to move in the first direction in the damping cavity 51 through the pushing guide rail 11.

[0128] In some embodiments, the input shaft portion 6 includes a first shaft section 61 and a second shaft section 62, one end of the first shaft section 61 is connected to the cam pushing portion 7, and the other end is connected to the second shaft section 62.

[0129] It should be noted that, as shown in FIG. 4, the lower end of the first shaft section 61 is connected with the cam pushing part 7, that is, the connection between the input shaft part 6 and the cam pushing part 7 can be realized through the first shaft section 61, the cam member 100 is an integral whole, and the upper end of the first shaft section 61 is connected with the second shaft section 62, that is, the input shaft part 6 is an integral whole, the structural strength of the input shaft part 6 can be improved, and the structural strength of the whole cam member 100 can be further improved.

[0130] The second shaft section 62 is arranged in the housing 5 and rotatably supported on the housing 5 through the bearing member 8, the outer diameter of the first shaft section 61 is greater than the outer diameter 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 housing 5 in the axial direction.

[0131] The second shaft section 62 is arranged in the housing 5, that is, the input shaft part 6 is arranged in the housing 5 through the second shaft section 62, the installation of the cam member 100 on the housing 5 is realized, the second shaft section 62 is supported on the housing 5 through the bearing member 8, that is, the second shaft section 62 is arranged in the bearing member 8, the installation of the second shaft section 62 on the housing 5 is realized through the bearing member 8, the second shaft section 62 can rotate relative to the housing 5 through the bearing member 8, that is, the cam member 100 can rotate relative to the housing 5, the second shaft section 62 can also limit the bearing member 8 in the radial direction, at the same time, the outer diameter of the first shaft section 61 is greater than the outer diameter of the second shaft section 62, that is, the first shaft section 61 can limit the bearing member 8 in the axial direction, 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 housing 5 in the axial direction, that is, the installation of the bearing member 8 is realized, and the bearing member 8 is further limited in the axial direction, the accuracy of the installation position of the bearing member 8 and the reliability of the work can be ensured.

[0132] In some embodiments, the housing 5 is formed with a mounting groove 53 communicating with the end of the damping cavity 51, and a stop limiting face 531 is formed in the mounting groove 53.

[0133] The mounting groove 53 is used to provide an installation position for the bearing member 8, so as to realize the installation of the bearing member 8 on the housing 5, and the mounting groove 53 is arranged at the end of the damping cavity 51, that is, when the second shaft section 62 extends out of the damping cavity 51 upward, the second shaft section 62 can pass through the bearing member 8 at the same time, so as to be connected with the housing 5 through the bearing member 8, and the stop limiting face 531 is formed in the mounting groove 53, that is, the bearing member 8 is limited in the axial direction through the stop limiting face 531, so as to ensure the accuracy of the installation position of the bearing member 8.

[0134] The bearing piece 8 is installed in the installation groove 53, and the bearing piece 8 comprises a second inner ring part 81, a second outer ring part 82 and a second rolling part 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 abutted to the end face of the first shaft segment 61 in the axial direction, and the second outer ring part 82 is limited and abutted to the stop limiting face 531 in the axial direction.

[0135] It should be noted that the bearing piece 8 is installed in the installation groove 53, which can realize the installation of the bearing piece 8, and the bearing piece 8 comprises the second inner ring part 81, the second outer ring part 82 and the second rolling part 83, that is, the bearing piece 8 can be a ball bearing, and the second inner ring part 81 is abutted to the end face of the first shaft segment 61 in the axial direction, so that the bearing piece 8 is axially limited by the first shaft segment 61, and the second outer ring part 82 is abutted to the stop limiting face 531 in the axial direction, so that the bearing piece 8 is further axially limited by the stop limiting face 531, and the stop limiting face 531 and the end face of the first shaft segment 61 are spaced apart in the axial direction of the bearing piece 8, so that the bearing piece 8 is axially limited by the first shaft segment 61 and the stop limiting face 531 at both ends of the bearing piece 8, to ensure the accuracy of the installation position of the bearing piece 8, thereby improving the reliability of the working of the bearing piece 8.

[0136] In some embodiments, 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.

[0137] The first end cover 54 and the second end cover 56 are connected through the main body shell 55, so that the shell 5 is an integral whole, which can improve the structural strength of the shell 5 as a whole, and the first end cover 54 and the second end cover 56 are respectively connected to the two ends of the main body shell 55, so that the main body shell 55 can be sealed from the two ends of the main body shell 55 by the first end cover 54 and the second end cover 56 respectively, to prevent rain, dust and the like from entering the damping cavity 51 and affecting the damping function of the damper 200, and to prevent flying stones, sand and the like from entering the inside of the damping cavity 51 during the driving of the automobile to cause the damper 200 to fail, and the first end cover 54, the second end cover 56 and the main body shell 55 jointly form the damping cavity 51 for arranging the cam piece 100 and the driven shaft 3, and as shown in FIGS. 2, 12-13, the first end cover 54 is arranged above the main body shell 55, and the second end cover 56 is arranged below the main body shell 55, so that the first end cover 54 and the second end cover 56 are distributed in the first direction to seal the upper end face and the lower end face of the main body shell 55.

[0138] The cam piece 100 is rotatably arranged in the first end cover 54, and the driven shaft 3 is movably arranged in the second end cover 56.

[0139] And, the cam member 100 is arranged in the first end cover 54, so that the cam member 100 is mounted on the shell 5 and can rotate relative to the first end cover 54, that is, the cam member 100 can rotate relative to the shell 5. At the same time, the driven shaft 3 is arranged in the second end cover 56, so that the driven shaft 3 is mounted on the shell 5 and can move relative to the second end cover 56, that is, the driven shaft 3 can move relative to the shell 5. Then, the cam member 100 can be arranged above the driven shaft 3, so that the cam member 100 can drive the driven shaft 3 to move.

[0140] In some embodiments, the first end of the main shell 55 is provided with a mounting seat 551, and the mounting seat 551 is provided with a mounting groove 53 communicating with the damping cavity 51. The cam member 100 is supported on the main shell 55 by the bearing 8 arranged in the mounting groove 53. The first end cover 54 is detachably connected to the mounting seat 551.

[0141] It should be noted that, as shown in FIGS. 2-3 and 13, the upper end of the main shell 55 is provided with a mounting seat 551, and the mounting seat 551 is provided with a mounting groove 53. The mounting groove 53 is used to provide a mounting position for the bearing 8 to achieve the mounting of the bearing 8. The mounting groove 53 is connected to the damping cavity 51, so that the cam member 100 can extend from the damping cavity 51 to the outside of the damping cavity 51 along the mounting groove 53. At the same time, the cam member 100 can be arranged in the bearing 8 and supported on the main shell 55 by the bearing 8. That is, the cam 2 can be connected to the shell 5 through the bearing 8 and can rotate relative to the shell 5 through the bearing 8. In addition, the first end cover 54 and the mounting seat 551 are detachably connected, so that the first end cover 54 and the mounting seat 551 can be connected or separated. When the first end cover 54 and the mounting seat 551 are connected, the mounting groove 53 can be sealed to prevent rain, dust and other impurities from entering the bearing 8 and causing damage to the bearing 8. When the first end cover 54 and the mounting seat 551 are separated, the bearing 8 can be easily mounted or dismounted.

[0142] The main shell 55 and the first end cover 54 can be connected 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 shell 55 and the first end cover 54.

[0143] In addition, the second end cover 56 includes a disc body 561 and a sleeve 562. The disc body 561 is detachably connected to the second end of the main shell 55. The sleeve 562 is located at the center of the disc body 561 and is provided with a through hole 52 penetrating in the axial direction. The driven shaft 3 is movably arranged in the through hole 52.

[0144] It should be noted that the second end cover 56 is arranged below the main body shell 55, so that the disc body part 561 is detachably connected with the main body shell 55, that is, the disc body part 561 and the main body shell 55 can be connected or separated. When the disc body part 561 is connected with the main body shell 55, the connection between the second end cover 56 and the main body shell 55 can be realized. When the disc body part 561 is separated from the main body shell 55, the damping cavity 51 is opened downward, which facilitates the installation of the cam member 100 and the driven shaft 3 in the damping cavity 51. Meanwhile, the sleeve part 562 is arranged at the middle part of the disc body part 561, and the through hole 52 is arranged on the sleeve part 562 and penetrates in the axial direction. The driven shaft 3 can extend out of the through hole 52, and the driven shaft 3 can move relative to the sleeve part 562. That is, the through hole 52 can be used to guide the movement of the driven shaft 3, so as to improve the reliability of the movement of the driven shaft 3 in the first direction.

[0145] The main body shell 55 and the second end cover 56 can be connected by the bolts 17. The connection method is simple and reliable. The number of bolts 17 can be multiple, so as to improve the connection reliability between the main body shell 55 and the second end cover 56. The shaft shoulder is formed at one end of the sleeve part 562 towards the inside of the damping cavity 51, so as to limit the support member 4 and ensure the accuracy of the installation position of the support member 4.

[0146] In some embodiments, the damper 200 further comprises a damping spring 9. The lower fork arm 10 is connected to one end of the driven shaft 3 outside the damping cavity 51. The outer peripheral wall of the shell 5 is provided with a limiting part 57. The two ends of the damping spring 9 are respectively abutted against the lower fork arm 10 and the limiting part 57.

[0147] It should be noted that the damping spring 9 can play a damping role. The one end of the driven shaft 3 outside the damping cavity 51 is connected with the lower fork arm 10, and the other end of the lower fork arm 10 is connected with the wheel. When the driven shaft 3 moves under the action of the cam member 100, the lower fork arm 10 can be driven to move, so as to realize the active control of the wheel and realize the damping function of the vehicle 300, improve the driving control and riding comfort of the vehicle 300. Meanwhile, the limiting part 57 is formed on the outer peripheral wall of the shell 5 and extends along the radial direction of the shell 5. The limiting part 57 has a certain length along the radial direction. The two ends of the damping spring 9 are respectively abutted against the lower fork arm 10 and the limiting part 57. The lower fork arm 10 and the limiting part 57 can jointly limit the damping spring 9, so as to ensure the accuracy of the installation position of the damping spring 9 and the reliability of the work.

[0148] It should be noted that the shell 5 and the limiting portion 57 can be directly integrated to reduce the number of components and assembly procedures, and a spring seat 91 can be arranged at the lower fork arm 10, and the spring seat 91 is fixedly connected to the lower fork arm 10 through the bolt 17. The spring seat 91 limits the damping spring 9, and a dust cover 92 is further sleeved on the end of the shell 5 extending from the driven shaft 3. The dust cover 92 can prevent rain, sand and other objects from entering the damping cavity 51 to damage the damper 200. The damping spring 9 is sleeved on the outside of the dust cover 92, and the dust cover 92 can also limit the damping spring 9 in the radial direction to ensure the accuracy of the installation position of the damping spring 9.

[0149] In some embodiments, the outer peripheral wall of the shell 5 is provided with a reinforcing structure 58.

[0150] The shell 5 is used to provide an installation position for the cam member 100, and the cam member 100 can be protected to avoid damage and failure due to collision. As shown in FIG. 12, the outer peripheral wall of the shell 5 is provided with a reinforcing structure 58, which is used to improve the structural strength of the shell 5. The reinforcing structure 58 is configured as a plurality of square protrusions, which are uniformly distributed on the outer peripheral wall of the shell 5 to uniformly and effectively improve the structural strength of the shell 5.

[0151] In some embodiments, the damper 200 further comprises a driving member 16 connected to the cam member 100, and the driving member 16 is used to drive the cam member 100 to rotate.

[0152] The driving member 16 can provide driving force for the connected components. When the driving member 16 is connected to the cam member 100, it can provide driving force for the cam member 100. The driving member 16 is used to drive the cam member 100 to rotate relative to the shell 5. When the driving member 16 works, it can transmit the driving force generated by itself to the cam member 100, so that the cam member 100 can rotate relative to the shell 5 under the driving of the driving member 16, and then drive the driven shaft 3 to move in the first direction. The driving member 16 can be configured as a driving motor.

[0153] In addition, the driving member 16 can also be configured as a generator, that is, the driving member 16 can also be used for power generation. The driven shaft 3 can move vertically relative to the shell 5 of the vehicle 300, and the inner wall of the push rail 11 can be pushed by the matching structure 31 to drive the cam member 100 to rotate, and then the driving member 16 can be driven to operate to realize power generation. In a new energy vehicle 300, the electricity generated by the driving member 16 can be used to drive the vehicle 300 to run, thereby improving the endurance of the vehicle 300.

[0154] It should be noted that, during the operation of the vehicle 300, due to the unevenness of the road surface, there is relative motion between the vehicle body and the wheel components, and the damper 200 can play a role in damping and buffering between the vehicle body and the wheel components. The driving member 16 is configured as a generator, and when the driven shaft 3 of the damper 200 moves with the wheel components relative to the vehicle body and the cam member 100, the driven shaft 3 can continuously move relative to the cam member 100 as the vehicle 300 continues to travel, thereby continuously driving the cam member 100 to rotate to continuously generate electricity by the driving member 16. Thus, the vibration generated during the travel of the vehicle 300 can be well utilized for power generation, vibration energy recovery is achieved, and the economy of the vehicle 300 is improved.

[0155] In some embodiments, the driving member 16 is coaxially arranged with the cam member 100.

[0156] It should be noted that the driving member 16 is used to drive the cam member 100 to rotate relative to the housing 5. Coaxially arranging the driving member 16 with the cam member 100 can facilitate the driving member 16 to transmit driving force to the cam member 100, and can simplify the structure and make the structure compact, with higher transmission efficiency.

[0157] It should be noted that the driving member 16 can be a rotary motor. According to the size of the space and the shape and size of the rotary motor, the relative position between the rotary motor and the cam member 100 can be changed, i.e. the rotary motor and the cam member 100 can be arranged eccentrically, and at the same time, the driving member 16 and the cam member 100 can be spatially separated or integrated. Both of them can make the driving member 16 drive the cam member 100 to rotate, and the cam member 100 can be connected to the output shaft of the driving member 16 through spline fitting, so that the driving member 16 can drive the cam member 100 to rotate.

[0158] In addition, by reasonably designing the geometric size of the cam member 100, the damper 200 can well achieve low-frequency large-amplitude Z-direction damping effect through active control, and can achieve high-frequency small-amplitude Z-direction damping effect by controlling the forward rotation or reverse rotation of the driving member 16, so that the damper 200 can adapt to various working conditions, and the application range of the damper 200 is increased.

[0159] In some embodiments, the driven shaft 3 extends from the open end 12 of the movable cavity 1 into the cam member 100; and / or the driven shaft 3 and the buffer 2 in the movable cavity 1 are distributed in the first direction.

[0160] At least part of the driven shaft 3 can extend into the movable cavity 1 and be connected and matched with the pushing guide rail 11. One end of the movable cavity 1 is configured as an open end 12, so that at least part of the driven shaft 3 can extend into the movable cavity 1 from the open end 12, so as to facilitate the connection and matching of the driven shaft 3 with the pushing guide rail 11, and the driven shaft 3 can move in the first direction under the driving of the pushing guide rail 11.

[0161] In addition, the buffer 2 is used to limit the maximum stroke of the upward movement of the driven shaft 3. The driven shaft 3 and the buffer 2 in the movable cavity 1 are distributed in the first direction, so that the buffer 2 can limit the maximum stroke of the upward movement of the driven shaft 3, so as to effectively avoid the damage of the cam member 100 or the driven shaft 3 due to excessive extrusion between the driven shaft 3 and the cam member 100.

[0162] The application further provides a damping system.

[0163] The damping system according to the embodiment of the application comprises the damper 200 described in any one of the above. The cam member 100 and the driven shaft 3 can be mounted by forming the housing 5 into the damping cavity 51. In addition, the pushing guide rail 11 is arranged on the cam member 100, the matching structure 31 is arranged on the driven shaft 3, and the matching structure 31 can extend into the pushing guide rail 11 and be matched with the cam member 100. In this way, the cam member 100 can drive the driven shaft 3 to move in the first direction through the pushing guide rail 11 and the matching structure 31, so as to realize the damping function of the vehicle 300, improve the driving controllability and riding comfort of the vehicle 300, and the overall structure is relatively simple, the production cost and manufacturing cost of the damper 200 can be reduced, and the mechanical transmission mode can effectively improve the transmission efficiency, that is, improve the response speed, and improve the user satisfaction.

[0164] The application further provides a vehicle 300.

[0165] The vehicle 300 according to the embodiment of the application comprises the damper 200 described in any one of the above, or comprises the damping system described above. By arranging the damper 200 or the damping system on the vehicle 300, the damping function of the vehicle 300 can be realized, the driving controllability and riding comfort of the vehicle 300 can be improved, the driving controllability and riding comfort of the vehicle 300 can be improved, the production cost and manufacturing cost can be reduced, the response speed can be improved, and the user satisfaction can be improved.

[0166] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0167] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A cam member, wherein, 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 according to any one of claims 1-2, 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 according to any one of claims 1-3, 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 according to any one of claims 1-5, 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, wherein, 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 any one of claims 9-10, 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 any one of claims 11-12, 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) is matched 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 any one of claims 11-15, wherein, The pushing guide rail (11) and the matching structure (31) are both provided in plurality and matched one by one, 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 any of claims 9-16, 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 any of claims 9-17, 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 any of claims 19-20, wherein, The shell (5) is provided with a penetrating hole (52) for penetrating the mounting shaft section (34), one of the outer peripheral wall of the mounting shaft section (34) and the inner peripheral wall of the penetrating hole (52) is provided with a guide convex rib (341), and the other is provided with a guide limiting groove (521), and the guide convex rib (341) and the guide limiting groove (521) are guided and matched along the first direction.

22. The damper of any one of claims 18-21, wherein, The cam member comprises an input shaft part (6) and a cam pushing part (7), the input shaft part (6) penetrates 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) penetrates the shell (5) and is 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 any of claims 18-24, 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 any of claims 18-26, 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 any of claims 18-27, wherein, The outer peripheral wall of the shell (5) is provided with a reinforcing structure (58).

29. The damper of any of claims 9-28, 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 any of claims 9-30, 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 wherein, The damping absorber comprises any one of claims 9-31.

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

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