Clutch mechanism, steering system and vehicle
By employing a decoupling component that slides through the input shaft in the clutch mechanism and using a fluid pressure drive unit to control the sliding, the problem of unsmooth decoupling and coupling processes in the prior art is solved, resulting in smoother switching and a more efficient structural design.
Patent Information
- Application Number
- CN202422738576.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-08
Smart Images
Figure CN223443615U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of vehicles, and particularly relates to a clutch mechanism, a steering system and a vehicle. BACKGROUND
[0002] The steering system is a very important system of a vehicle, and the clutch mechanism, as an important mechanism of the steering system, is connected between an input assembly and an actual steering gear. Through decoupling and coupling processes of the clutch mechanism, the coupling of the input assembly and the actual steering gear or the decoupling of the input assembly and the actual steering gear is met.
[0003] In the related art, the clutch mechanism is usually composed of multiple friction plates, and power transmission or interruption is achieved by controlling the combination and separation of the friction plates. Since there is a certain movement gap between the multiple friction plates, the switching in the decoupling and coupling processes of the clutch mechanism is not smooth enough, and there is a certain jerk. SUMMARY
[0004] The application aims to provide a clutch mechanism, a steering system and a vehicle to solve the problem that the switching in the decoupling and coupling processes of the clutch mechanism in the prior art is not smooth enough and there is a certain jerk.
[0005] To solve the above technical problems, the application is implemented as follows:
[0006] In a first aspect, the application discloses a clutch mechanism, comprising:
[0007] an input shaft;
[0008] an output shaft;
[0009] a driving unit;
[0010] a decoupling assembly connected with the input shaft, which is decoupled or coupled with the output shaft when sliding in a first direction under the driving of the driving unit.
[0011] Optionally, the driving unit is a fluid pressure driving unit.
[0012] The fluid pressure driving unit is used to control the pressure in the decoupling assembly, so that the decoupling assembly slides in the first direction under the driving of the fluid pressure.
[0013] Optionally, a housing is further included.
[0014] The input shaft and the output shaft are at least partially located in the housing and rotationally connected with the housing.
[0015] Optionally, the decoupling assembly comprises:
[0016] a decoupling slider, which is in sliding connection with the input shaft in a first direction and is in clamping connection with the input shaft in a second direction; the first direction is an axial direction of the input shaft, and the second direction is a circumferential direction of the input shaft;
[0017] a decoupling driver, which forms a pressure cavity together with the housing, and is in clamping connection with the decoupling slider in the first direction and is in sliding connection with the decoupling slider in the second direction; the pressure cavity is used for inputting fluid to drive the decoupling driver to move in the first direction and drive the decoupling slider to move in the first direction, so that the decoupling slider is coupled or decoupled with the output shaft.
[0018] Optionally, the decoupling driver comprises:
[0019] a piston slider, one side of which forms a pressure cavity together with the housing, and the other side of which is in sliding connection with a first bearing in the second direction; the pressure cavity is used for inputting fluid to drive the piston slider to move in the first direction;
[0020] a first bearing, which is in clamping connection with the piston slider and the decoupling slider in the first direction respectively, and is in sliding connection with the decoupling slider in the second direction.
[0021] Optionally, the piston slider comprises a slider part and a partition part;
[0022] the decoupling driver further comprises at least two sealing members;
[0023] the slider part, the at least two sealing members and the inner wall of the housing form the pressure cavity;
[0024] the partition part extends into the pressure cavity and is used for separating the pressure cavity into at least two sub-pressure cavities; each of the sub-pressure cavities is connected with a fluid input pipeline respectively.
[0025] Optionally, one side of the slider part facing the decoupling slider is provided with a protruding part, which is in abutment with one side of the first bearing away from the output shaft.
[0026] Optionally, the decoupling assembly further comprises:
[0027] a first limiting member, which is in clamping connection with one end of the decoupling slider away from the output shaft;
[0028] a second limiting member, which is in clamping connection with one end of the decoupling driver close to the output shaft;
[0029] The first bearing is located between the first limiting member and the second limiting member.
[0030] Optionally, further comprising: a locking assembly; when the decoupling assembly is coupled with the output shaft, the locking assembly is in a locked state to prohibit the decoupling assembly from moving in the first direction.
[0031] Optionally, the decoupling sliding member is provided with a locking portion at one end close to the output shaft.
[0032] The locking assembly comprises a locking pin.
[0033] When the decoupling assembly is coupled with the output shaft, the locking pin extends into the locking portion away from the output shaft.
[0034] Optionally, the decoupling sliding member is further provided with a first boss on the side wall at one end close to the output shaft.
[0035] The output shaft is provided with a third limiting member corresponding to the first boss at one end close to the input shaft, and the third limiting member is used to limit the stroke when the decoupling assembly moves towards the output shaft.
[0036] Optionally, the input shaft is provided with a second boss on the side wall at one end away from the output shaft, and the second boss is used to limit the stroke when the decoupling assembly moves away from the output shaft.
[0037] Optionally, further comprising:
[0038] A limiting guide rail is arranged in the inner cavity of the housing at one end away from the output shaft.
[0039] A limiting disc is fixedly connected with the input shaft at one side of the input shaft away from the decoupling assembly.
[0040] A fourth limiting member is slidably connected at one end with the limiting disc and at the other end with the limiting guide rail.
[0041] When the limiting disc rotates with the input shaft, the fourth limiting member is driven to move along the limiting guide rail within the stroke range of the limiting guide rail.
[0042] In a second aspect, the present application discloses a steering system, comprising a steering gear, a steering input assembly and the clutching mechanism as any one of the above.
[0043] The steering input assembly is connected with the input shaft, and the steering gear is connected with the output shaft.
[0044] Optionally, the steering input assembly comprises:
[0045] Steering wheel and steering column;
[0046] The steering wheel is connected to the steering column;
[0047] The steering column is connected to the input shaft of the clutch mechanism.
[0048] Optionally, the steering system further includes:
[0049] Driving controller;
[0050] The driving controller is electrically connected to the steering column, the driving unit and the clutch mechanism respectively.
[0051] In a third aspect, the present application discloses a vehicle comprising any one of the clutch mechanisms or steering systems described above.
[0052] In the embodiment of the present application, the decoupling assembly is slidably connected to the input shaft and, driven by the drive unit, slides in a first direction, i.e., the axial direction of the input shaft. When the decoupling assembly is coupled to the output shaft, the input shaft drives the output shaft to rotate. When the decoupling assembly is decoupled from the output shaft, the input shaft drives the decoupling assembly to rotate, but stops driving the output shaft to rotate. Therefore, the decoupling assembly, driven by the drive unit, achieves coupling and decoupling by sliding. This mode switching is smoother, avoids any jerking, and improves the efficiency of the decoupling and coupling processes.
[0053] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0054] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:
[0055] Figure 1 This is a schematic structural diagram of a clutch mechanism provided in an embodiment of the present application;
[0056] Figure 2 This is a clutch mechanism provided by the embodiment of the present application. Figure 1 One of the A-A cross-sectional diagrams;
[0057] Figure 3 This is a clutch mechanism provided by the embodiment of the present application. Figure 1 The second schematic diagram of the A-A section;
[0058] Figure 4 This is a clutch mechanism provided by the embodiment of the present application. Figure 1 The third schematic diagram of the A-A section;
[0059] Figure 5 is a schematic diagram of a locking state of a locking assembly of a clutch mechanism provided by an embodiment of the present application;
[0060] Figure 6 is a schematic diagram of an unlocking state of a locking assembly of a clutch mechanism provided by an embodiment of the present application;
[0061] Figure 7 is a schematic diagram of a piston slider provided by an embodiment of the present application;
[0062] Figure 8 is a schematic diagram of a decoupling slider provided by an embodiment of the present application;
[0063] Figure 9 is a schematic diagram of a steering system provided by an embodiment of the present application;
[0064] Figure 10 is a schematic diagram of a clutch mechanism position in a steering system provided by an embodiment of the present application;
[0065] Figure 11 is a schematic diagram of a system architecture of a steering system in a steering system provided by an embodiment of the present application.
[0066] Reference signs:
[0067] 20 - steering column; 22 - feel motor; 21 - torque / angle sensor; 40 - clutch mechanism; 50 - steering gear; 51 - wheel end sensor; 60 - tire; 70 - steering input assembly; 80 - drive unit; 90 - drive unit; 100 - housing; 101 - upper housing; 102 - lower housing, 200 - input shaft; 300 - output shaft; 310 - third limiting piece; 400 - decoupling assembly; 410 - decoupling slider; 420 - decoupling driving piece; 421 - piston slider; 422 - first bearing; 430 - pressure cavity; 431 - first sub-chamber; 432 - second sub-chamber; 4211 - slider part; 4212 - separation part; 423 - sealing piece; 426 - protruding part; 424 - first limiting piece; 425 - second limiting piece; 600 - locking assembly; 411 - locking part; 611 - locking pin; 412 - first boss; 221 - second boss; 710 - limiting guide rail; 720 - limiting disc; 730 - fourth limiting piece; 750 - first screw; 760 - second screw; 800 - electromagnetic lock. DETAILED DESCRIPTION
[0068] Embodiments of the present application will be described in detail below with reference to the drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are for the purpose of explanation only, and are not to be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0069] The terms "first", "second" in the specification and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.
[0070] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0071] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" 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.
[0072] Referring to Figures 1 to 4 The embodiment of the present application provides a structural schematic diagram of a clutch mechanism, which comprises:
[0073] an input shaft 200;
[0074] an output shaft 300;
[0075] a driving unit 90;
[0076] The decoupling assembly 400 is connected to the input shaft 200 . When the decoupling assembly 400 slides along the first direction under the drive of the driving unit 90 , it is decoupled or coupled with the output shaft 300 .
[0077] In the embodiment of the present application, the input end of the input shaft 200 can be connected to the steering wheel 10. When the steering wheel is rotated, the torque of the steering wheel 10 can be transmitted to the input shaft 200. The output end of the output shaft 300 can be connected to the steering gear 50 to output torque to the steering gear 50. When the decoupling assembly 400 is coupled to the output shaft 300, the torque of the steering wheel 10 is transmitted to the input shaft 200, the torque of the input shaft 200 is transmitted to the output shaft 300, and the torque of the output shaft 300 is transmitted to the steering gear 50.
[0078] Specifically, the decoupling assembly 400 is slidably connected to the input shaft 200. The decoupling assembly 400 is limited relative to the input shaft 200 along its circumference, meaning that the decoupling assembly 400 can slide along a first direction, i.e., the axial direction of the input shaft 200, but does not rotate along its circumference. The decoupling assembly 400 rotates as the input shaft rotates. Driven by the drive unit 90, the decoupling assembly 400 slides along the axial direction of the input shaft 200, decoupling or coupling with the output shaft 300. When the decoupling assembly 400 is coupled to the output shaft 300, the input shaft 200 drives the output shaft 300 to rotate; when the decoupling assembly 400 is decoupled from the output shaft 300, the input shaft 200 drives the decoupling assembly to rotate, but does not drive the output shaft 300 to rotate. The drive unit 90 can be a mechanical drive unit, an electronically controlled drive unit, or a fluid pressure drive unit.
[0079] In the clutch mechanism of the embodiment of the present application, the decoupling component is driven by the driving unit to achieve coupling and decoupling in a sliding manner. Compared with related technologies, the switching of coupling and decoupling by sliding is smoother, avoiding the feeling of frustration and improving the switching efficiency of the decoupling and coupling process.
[0080] Optionally, in some embodiments, referring to Figures 1 to 4 , the driving unit 90 is a fluid pressure driving unit;
[0081] The fluid pressure driving unit is used to control the pressure in the decoupling assembly 400 so that the decoupling assembly 400 slides along the first direction under the drive of the fluid pressure.
[0082] In an embodiment of the present application, the drive unit 90 adopts a fluid pressure drive unit, including a liquid or gas driven device, which connects the decoupling component 400 that can be driven by fluid pressure to the input shaft 200, so that the external input fluid can control the decoupling component 400, and couple or decouple with the output shaft 300 in the axial direction along the input shaft 200. In this setting, the decoupling component 400 that can be driven by fluid pressure is integrated into the internal space of the clutch mechanism, and there is no need for the motor to be directly set on the pipe column of the clutch mechanism, so that the space occupied by the decoupling structure can be relatively smaller, the space layout restriction is reduced, and the layout method is more flexible.
[0083] Optionally, in some embodiments, referring to Figures 1 to 4 , further comprising a housing 100;
[0084] The input shaft 200 and the output shaft 300 are at least partially located in the housing 100 and are rotatably connected to the housing 100 .
[0085] In the embodiment of the present application, the housing 100 serves as a supporting and protective structure for the clutch mechanism. One end of the input shaft 200 is connected to the steering input assembly 70, and the other end extends into the housing 100 and is rotatably connected to the housing 100. One end of the output shaft 300 is connected to the steering gear 50, and the other end extends into the housing 100 and is rotatably connected to the housing 100. It can be understood that through holes are provided at both ends of the housing 100, and there is a chamber inside the housing 100, and the through hole is connected to the chamber. The input shaft 200 extends from the through hole at one end of the housing 100 into the chamber of the housing 100, and the output shaft 300 extends from the through hole at the other end of the housing 100. The decoupling assembly 400 is slidably connected to the input shaft 200 in the chamber. Optionally, in some embodiments, refer to Figure 2 、 Figure 3 The decoupling component 400 includes:
[0086] a decoupling sliding member 410, wherein the decoupling sliding member 410 is slidably connected to the input shaft 200 along the first direction and is engaged with the input shaft 200 in the second direction; the first direction is the axial direction of the input shaft 200, and the second direction is the circumferential direction of the input shaft 200;
[0087] The decoupling driving member 420 is in joint with the housing 100 to form a pressure cavity 430, and is in joint with the decoupling sliding member 410 in the first direction and in sliding connection with the decoupling sliding member 410 in the second direction; the pressure cavity 430 is used to input fluid to drive the decoupling driving member 420 to move in the first direction, and when the decoupling driving member 420 slides in the first direction, the decoupling driving member 420 drives the decoupling sliding member 410 to move in the first direction to couple or decouple the decoupling sliding member 410 with the output shaft 300.
[0088] In the embodiment of the present application, the decoupling assembly 400 can include the decoupling sliding member 410 and the decoupling driving member 420. The decoupling sliding member 410 can be sleeved on the input shaft 200 and can reciprocate along the axial direction of the input shaft 200; the decoupling sliding member 410 is in joint with the input shaft 200 in the circumferential direction of the input shaft 200, so that the decoupling sliding member 410 does not rotate relative to the input shaft 200 in the second direction.
[0089] In actual application, the input shaft 200 is provided with a protruding sliding assembly 210, and the inner wall of the decoupling sliding member 410 is provided with a groove corresponding to the sliding assembly 210; when the decoupling sliding member 410 is sleeved on the input shaft 200, the sliding assembly 210 is embedded in the groove in the inner wall of the decoupling sliding member 410, so that the decoupling sliding member 410 slides along the axial direction of the input shaft 200 without rotating relative to the input shaft 200 in the circumferential direction.
[0090] One side of the decoupling driving member 420 is in joint with the decoupling sliding member 410 in the axial direction of the output shaft 300 and is in sliding connection with the decoupling sliding member 410 in the circumferential direction of the input shaft 200; thus, when the input shaft 200 rotates to drive the decoupling sliding member 410 to rotate, the decoupling driving member 420 does not rotate with the decoupling sliding member 410. When the decoupling driving member 420 moves along the axial direction of the input shaft 200, the decoupling driving member 420 can drive the decoupling sliding member 410 to move along the axial direction of the input shaft 200 due to the joint limiting relationship between the decoupling driving member 420 and the decoupling sliding member 410.
[0091] The other side of the decoupling driving member 420 is in joint with the housing 100 to form a pressure cavity 430, and the pressure cavity 430 can input fluid from an external fluid pressure power device to control the pressure of the decoupling driving member 420, so as to control the decoupling driving member 420 to move towards the output shaft 300 to couple the decoupling sliding member 410 with the output shaft 300 or to move away from the output shaft 300 to decouple the decoupling sliding member 410 from the output shaft 300.
[0092] In the embodiment of the present application, the decoupling sliding piece 410 is coupled and decoupled with the input shaft 200 and the output shaft 300 in the axial direction, and the decoupling driving piece 420 utilizes the chamber inside the housing, utilizes the pressure of the fluid to drive the decoupling driving piece to move, thereby driving the movement of the decoupling sliding piece. The decoupling structure occupies a small space. Since the fluid pressure power device utilizes the fluid to transfer pressure, the fluid pressure power device can access the pressure chamber of the decoupling driving piece 420 through a pipeline, without being installed on the housing of the clutch mechanism, so that the installation position of the clutch mechanism is more flexible and the spatial design layout is more convenient.
[0093] It should be noted that in the embodiment of the present application, the fluid can be a liquid, and the fluid pressure power device can adopt a hydraulic motor device, which is simpler and safer in structure. Of course, the fluid can also be a gas, and the embodiment of the present application does not limit it.
[0094] Optionally, in some embodiments, the decoupling driving piece 420 comprises:
[0095] The piston sliding block 421, one side of the piston sliding block 421 forms a pressure chamber with the housing 100, and the other side of the piston sliding block 421 is in sliding connection with the first bearing 422 in the second direction; the pressure chamber 430 is used to input fluid to drive the piston sliding block 421 to move in the first direction;
[0096] The first bearing 422 is respectively in clamping connection with the piston sliding block 421 and the decoupling sliding piece 410 in the first direction, and in sliding connection with the decoupling sliding piece 410 in the second direction.
[0097] In the embodiment of the present application, the decoupling driving piece 420 can comprise a piston sliding block 421 and a first bearing 422,
[0098] One side of the piston sliding block 421 forms the aforementioned pressure chamber with the housing 100, and the other side of the piston sliding block 421 is in sliding connection with the first bearing 422, and the first bearing 422 is also in sliding connection with the decoupling sliding piece 410. The sliding direction of the first bearing 422 is along the axial direction of the input shaft 200. On both sides of the first bearing along the axial direction of the input shaft 200, clamping structures are respectively arranged, so that the first bearing 422 can transmit the force generated by the movement of the piston sliding block 421 along the axial direction of the input shaft 200 to the decoupling sliding piece 410.
[0099] In the embodiment of the present application, the first bearing can be arranged at the middle position of the side of the piston sliding block 421 facing the decoupling sliding piece 410. In combination with Figure 2 and Figure 3 , so that Figure 3 and Figure 4Using the up, down, left, and right directions as a reference, when the piston slider 421 moves downward, it drives the first bearing 422 downward, which in turn drives the decoupling slider 410 downward until it engages with the output shaft 300, thereby coupling the input shaft 200 to the output shaft 300. When the piston slider 421 moves upward, it drives the first bearing 422 upward, which in turn drives the decoupling slider 410 upward until it disengages from the output shaft 300, thereby decoupling the input shaft 200 from the output shaft 300.
[0100] In the embodiment of the present application, due to the cooperation between the piston slider 421 and the first bearing 422, the piston slider 421 will not rotate with the rotation of the input shaft 200, and the coupling and decoupling process of the decoupling slider 410 and the output shaft can be realized. The structure is relatively simple and occupies little space.
[0101] Optionally, in some embodiments, the piston slider 421 includes a slider portion 4211 and a partition portion 4212 ;
[0102] The decoupling driving member 420 further includes: at least two sealing members 423;
[0103] The slider portion 4211 , the at least two sealing members 423 , and the inner wall of the housing 100 form the pressure chamber 430 ;
[0104] The partition portion 4212 extends into the pressure chamber 430 to separate the pressure chamber 430 into at least two sub-pressure chambers; each sub-pressure chamber is connected to a fluid input pipeline.
[0105] Reference Figure 2 、 Figure 4 and Figure 7 The piston slider 421 includes a slider portion 4211 and a partition portion 4212 . The slider portion 4211 is arranged parallel to the axial direction of the input shaft 200 , while the partition portion 4212 is arranged perpendicular to the axial direction of the input shaft 200 .
[0106] The slider portion 4211 , the seal 423 , and the inner wall of the housing form a pressure chamber 430 .
[0107] The partition portion 4212 is disposed in the middle of the slider portion 4211 and extends into the pressure chamber 430, thereby dividing the pressure chamber into at least two sub-chambers. Figure 2 In practical applications, the first sub-chamber 431 is communicated with the fluid conduit 461 , and the second sub-chamber 432 is communicated with the fluid conduit 462 .
[0108] When fluid is injected into the first sub-chamber 431 and the fluid in the second sub-chamber 432 remains unchanged or is extracted, the pressure of the first sub-chamber 431 is greater than the pressure of the second sub-chamber 432. Then, the pressure in the first sub-chamber 431 pushes the partition portion 4212 to move toward the output shaft 300, and the partition portion 4212 drives the slider portion 4211 to move toward the output shaft 300, and the slider portion 4211 drives the decoupling sliding member 410 to move toward the output shaft 300.
[0109] When fluid is injected into the second sub-chamber 432 and the fluid in the first sub-chamber 431 remains unchanged or is extracted, the pressure of the second sub-chamber 432 is greater than the pressure of the first sub-chamber 431. Then, the pressure in the second sub-chamber 432 pushes the partition portion 4212 to move away from the output shaft 300, and the partition portion 4212 drives the slider portion 4211 to move away from the output shaft 300, and the slider portion 4211 drives the decoupling sliding member 410 to move away from the output shaft 300.
[0110] In practical applications, the length of the slider portion 4211 has a margin, such as Figure 2 When the decoupling slider 410 is coupled to the output shaft 300, the end of the slider portion 4211 away from the output shaft 300 is at least aligned with the seal 423 away from the output shaft 300, forming a first sub-chamber to prevent fluid from leaking. The end of the slider portion 4211 near the output shaft 300 extends relative to the seal 4232. When the decoupling slider 410 is decoupled from the output shaft 300, the end of the slider portion 4211 near the output shaft 300 is at least aligned with the seal 423 near the output shaft 300, forming a second sub-chamber to prevent fluid from leaking. The end of the slider portion 4211 away from the output shaft 300 extends relative to the seal 423.
[0111] In this embodiment, due to the slider portion 4211 and the partition portion 4212 provided on the piston slider 421, two sub-chambers are formed with a simple structure. By controlling the fluid in the two sub-chambers, the sliding control of the decoupling slider 410 can be simply achieved, and the inner cavity of the shell is fully utilized. The overall structure is simpler and the occupied space is relatively small.
[0112] Optionally, in some embodiments, a protrusion 426 is provided on a side of the sliding block portion 4211 facing the decoupling sliding member 410 , and the protrusion 426 abuts against a side of the first bearing 422 away from the output shaft 300 .
[0113] In the examples of this application, refer to Figure 3A protrusion 426 is provided on the side of the slider portion 4211 facing the decoupling slider 410, and the first bearing 422 is arranged on the side of the protrusion 426 close to the output shaft 300. When the slider portion 4211 moves downward, the protrusion 426 can provide a more uniform downward force for the first bearing 422, making the structure more stable.
[0114] Optionally, in some embodiments, the decoupling component 400 further includes:
[0115] a first limiting member 424 , the first limiting member 424 being engaged with an end of the decoupling sliding member 410 away from the output shaft 300 ;
[0116] a second limiting member 425 , which is engaged with an end of the decoupling driving member 420 close to the output shaft 300 ;
[0117] The first bearing 422 is located between the first limiting member 424 and the second limiting member 425 .
[0118] like Figure 2 The embodiment of the present application further comprises a first limit member 424 and a second limit member 425 , wherein the first limit member is engaged with the decoupling sliding member 410 at an end of the decoupling sliding member 410 away from the output shaft 300 .
[0119] A gap is provided between the second stopper 425 and the slider portion 4211, within which the aforementioned raised portion 426 is disposed. The end of the second stopper 425 near the output shaft 300 is flush with the end of the raised portion 426 near the output shaft 300, thereby providing a more uniform force on the first bearing 422. In practice, the end of the decoupling slider 410 away from the output shaft 300 is threaded, and the first stopper 424 may be a nut that is screwed into the threaded portion for engagement.
[0120] like Figure 2 The end of the slider portion 4211 close to the output shaft 300 is engaged with the second stopper 425, and the end of the second stopper 425 away from the output shaft 300 is in contact with the first bearing 422. In actual application, the end of the slider portion 4211 close to the output shaft 300 is provided with a thread, and the second stopper 425 can be a nut that is screwed into the thread for engagement.
[0121] In the embodiment of the present application, since the first bearing 422 is located between the first limiting member 424 and the second limiting member 425, and the first limiting member 424 and the second limiting member 425 are respectively clamped with the decoupling sliding member 410 and the decoupling driving member 420, since the clamping mode is respectively connected with the decoupling sliding member 410 and the decoupling driving member 420, when the first bearing 422 moves upward, the decoupling sliding member 410 can be provided with more stable upward force, and when the first bearing 422 moves downward, the decoupling sliding member 410 can be provided with more stable downward force.
[0122] Optionally, in some embodiments, the clutching mechanism further comprises: a locking assembly 600; when the decoupling assembly 400 is coupled with the output shaft 300, the locking assembly 600 is in a locked state to prohibit the decoupling assembly 400 from moving in the first direction.
[0123] In the embodiment of the present application, the locking assembly 600 is further provided, which can lock the decoupling assembly 400 and the output shaft 300 when the decoupling assembly 400 is coupled with the output shaft 300, to avoid the decoupling assembly 400 and the output shaft 300 from being decoupled due to hydraulic system failure.
[0124] Of course, if the decoupling assembly 400 and the output shaft 300 are to be decoupled after being locked, the locking assembly 600 can be unlocked first, so that the decoupling assembly 400 can move in the axial direction of the input shaft 200 away from the output shaft 300, thereby realizing decoupling.
[0125] It should be noted that the locking assembly in the embodiment of the present application can be an electromagnetic lock, and of course can also be other similar locks, which are not limited in the embodiment of the present application.
[0126] Optionally, in some embodiments, the decoupling sliding member 410 is provided with a locking portion 411 at one end close to the output shaft;
[0127] The locking assembly 600 comprises a locking pin 611;
[0128] When the decoupling assembly 400 is coupled with the output shaft 300, the locking pin 611 extends into the side of the locking portion 411 away from the output shaft 300.
[0129] In the embodiment of the present application, referring to Figure 1 , 5 and Figure 6 , the decoupling sliding member 410 is provided with a locking portion 411 at one end close to the output shaft 300. The locking portion 411 may, for example, be at the end of the decoupling sliding member 410. As Figure 5 and Figure 8 , the locking portion 411 can be a circular ring provided at the end of the decoupling sliding member 410.
[0130] Referring to Figure 5 , the locking assembly includes a locking pin 611, after the decoupling slider 410 and the output shaft 300 are clamped, the locking assembly extends the locking pin 611, and the locking pin 611 is clamped on the side of the aforementioned ring away from the output shaft 300.
[0131] Referring to Figure 6 , if decoupling is required, the locking assembly retracts the locking pin 611, and the locking pin 611 is not on the side of the aforementioned ring away from the output shaft 300, so that the decoupling slider 410 can move away from the output shaft 300.
[0132] The locking mode of the locking portion 411 and the locking pin 611 is simple in structure and easy to implement.
[0133] Optionally, in some embodiments, the side wall of the end of the decoupling slider 410 close to the output shaft 300 is further provided with a first boss 412;
[0134] The end of the output shaft 300 close to the input shaft 200 is provided with a third limiting piece 310 corresponding to the first boss 412, and the third limiting piece 310 is used to limit the stroke of the decoupling assembly 400 when moving towards the output shaft 300.
[0135] In the embodiments of the present application, referring to Figure 3 , 4 and Figure 8 , the side wall of the end of the decoupling slider 410 close to the output shaft 300 is further provided with a first boss 412, and the first boss 412 is not arranged on the end of the decoupling slider 410, but arranged at a position away from the end by a preset distance. The preset distance can be set according to actual conditions, and the embodiments of the present application do not limit it.
[0136] And the end of the output shaft 300 close to the input shaft 200 is provided with a third limiting piece 310 corresponding to the first boss 412, so that when the decoupling slider 410 moves towards the output shaft 300, the first boss 412 abuts against the third limiting piece 310, and cannot move towards the direction close to the output shaft 300 any more. Therefore, in combination with the design of the length of the aforementioned sliding block portion 4211, the gap of the first sub-chamber 431 can be avoided, and the possibility of fluid leakage can be reduced.
[0137] It should be noted that, referring to Figure 4 , the shape of the end of the second limiting piece 425 close to the output shaft 300 can be the same as that of the first boss 412, so that after the second limiting piece 425 is installed on the decoupling slider 410, the second limiting piece 425 can cooperate with the first boss 412, facilitating installation and saving space.
[0138] It should be noted that, in combination withFigure 8 The decoupling slide 410 can be a semi-H-shaped hollow cylinder, with a hollow circular truncated cone extending outward in the middle, and the protruding part of the circular truncated cone is connected with a clamping structure, which can be a cross-shaped through hole. Correspondingly, the end of the output shaft 300 close to the input shaft 200 is provided with a corresponding buckle that extends into the cross-shaped through hole, thereby achieving the clamping of the decoupling slide 410 and the output shaft 300, and thus achieving the coupling of the input shaft 200 and the output shaft 300. As shown in Figure 8 The clamping structure of the end of the decoupling slide 410 close to the input shaft 200 can be a plurality of T-shaped teeth, and the end of the output shaft 300 can be a T-shaped groove. When the T-shaped teeth and the T-shaped groove are engaged, the decoupling slide 410 and the output shaft 300 are clamped, thereby achieving the coupling of the input shaft 200 and the output shaft 300.
[0139] After the T-shaped teeth and the T-shaped groove are disengaged, the decoupling slide 410 and the output shaft 300 are disengaged, thereby achieving the decoupling of the input shaft 200 and the output shaft 300.
[0140] Of course, the clamping structure connected to the protruding part of the circular truncated cone can also be other shapes, and the embodiments of the present application do not limit it.
[0141] Optionally, in some embodiments, the input shaft 200 is provided with a second boss 221 on the side wall of the end away from the output shaft 300, and the second boss 221 is used to limit the stroke when the decoupling assembly 400 moves away from the output shaft 300.
[0142] In the embodiments of the present application, reference is made to Figure 3 and Figure 4 The input shaft 200 is provided with a second boss 221 on the side wall of the end away from the output shaft 300 in the inner cavity of the housing, so that when the decoupling slide 410 moves away from the output shaft 300, the second boss 221 abuts against the end of the decoupling slide 410 away from the output shaft 300, and the decoupling slide 410 cannot move further in the direction away from the output shaft 300. In this way, in combination with the design of the length of the aforementioned sliding block part 4211, the second sub-chamber 432 can be prevented from having a gap, and the possibility of fluid leakage can be reduced.
[0143] Optionally, in some embodiments, further comprising:
[0144] A limiting guide rail 710 is arranged in the inner cavity of the housing 100 away from the output shaft 300;
[0145] A limiting disc 720 is fixedly connected with the input shaft 200 on the side of the input shaft 200 away from the decoupling assembly 400;
[0146] A fourth limiting member 730, one end of the fourth limiting member 730 is in sliding connection with the limiting disc 720, and the other end is in sliding connection with the limiting guide rail 710;
[0147] Wherein, the limiting disc 720 drives the fourth limiting member 730 to move along the limiting guide rail 710 within the stroke range of the limiting guide rail 710 when the input shaft 200 rotates.
[0148] In the embodiments of the present application, in combination with Figure 2 and Figure 3 , the limiting guide rail 710 is installed on the top wall in the inner cavity of the shell 100. The limiting disc 720 is fixed on the input shaft 200 and located on the side of the input shaft 200 away from the decoupling assembly 400. The first end of the fourth limiting member 730 is in sliding connection with the limiting disc 720, and the second end of the fourth limiting member 730 is in sliding connection with the movable link of the limiting guide rail 710.
[0149] The limiting disc 720 has a groove between the spiral-shaped guide rails, and the first end of the fourth limiting member 730 is inserted into the groove.
[0150] The limiting guide rail 710 has a straight groove, and the second end of the fourth limiting member 730 is inserted into the groove. When the input shaft 200 is at the intermediate zero position, the fourth limiting member 730 is at the intermediate position of the spiral-shaped guide rail of the limiting disc. When the limiting disc 720 rotates with the input shaft 200, the fourth limiting member 730 moves along the spiral-shaped guide rail, and when the fourth limiting member 730 moves to the limit of the spiral-shaped guide rail, the input shaft 200 also reaches the rotation limit.
[0151] Of course, the limiting guide rail can be fixed on the top of the shell 100 by installing a screw in the limiting guide rail 710.
[0152] In the embodiments of the present application, through the cooperation of the limiting guide rail 710, the limiting disc 720, and the fourth limiting member 730, the rotation limit position of the steering wheel can be limited, and greater damage to the spring and other components of the steering wheel can be avoided.
[0153] In the embodiments of the present application, as Figure 2 , the shell 100 can include an upper shell 101 and a lower shell 102. The upper shell 101 has an inner cavity, and the lower shell 102 has a flat surface close to the upper shell. The lower shell has a through hole, and the upper shell 101 and the lower shell 102 are fixedly connected by the shell-mounted first screw 750 and the second screw 760. The through hole of the lower shell 102 is in communication with the upper shell 101.
[0154] The input shaft 200 extends from the top of the upper shell 101 and extends to the through hole of the lower shell 102. The decoupling assembly 400 is arranged in the inner cavity.
[0155] A sealing assembly 810 is arranged at the top entrance of the upper housing 101, which can be an oil seal assembly. The sealing assembly 810 is in interference fit with the input shaft to seal the inner cavity and prevent foreign matter from entering the inner cavity.
[0156] The upper housing 101 is arranged with a second bearing 820 on the side away from the input shaft entrance of the upper housing 101. The second bearing 820 is in sliding connection with the input shaft 200.
[0157] A third bearing 830 is arranged at the end of the input shaft 200 close to the output shaft 300. A recess is arranged at the end of the output shaft 300 close to the input shaft 200. The third bearing 830 is in abutment with the recess of the output shaft 300.
[0158] The output shaft 300 extends from the through hole of the lower housing 102. A fourth bearing 840 is arranged on the side wall of the through hole of the lower housing 102. The fourth bearing 840 is in sliding connection with the outer side wall of the output shaft 300. A fifth bearing 850 is arranged at the end of the output shaft 300 away from the input shaft 200. The output shaft 300 is connected with the steering gear 50 through the second bearing 850.
[0159] Of course, as Figure 10 The part of the output shaft 300 exposed from the lower housing 102 extends into the connecting part of the steering gear 50, and the fifth bearing 850 is connected with the connecting part.
[0160] Referring to Figure 9 , a schematic view of a steering system is shown, which includes a steering gear 50, a steering input assembly 70, and the aforementioned clutch mechanism 40.
[0161] The steering input assembly 70 is connected with the input shaft 200, and the steering gear 50 is connected with the output shaft 300.
[0162] One end of the input shaft 200 is connected with the steering input assembly 70, and the other end extends into the housing 100 and is rotationally connected with the housing 100. One end of the output shaft 300 is connected with the steering gear 50, and the other end extends into the housing 100 and is rotationally connected with the housing 100. The driving unit 90, i.e. the fluid pressure power device, is connected with the first sub-chamber 431 and the second sub-chamber 432 of the clutch mechanism 40 through two conduits, respectively, to control the pressure of the fluid in the first sub-chamber 431 and the second sub-chamber 432.
[0163] Optionally, in some embodiments, referring to Figures 9 to 11 , the steering input assembly 70 includes:
[0164] a steering wheel 10 and a steering column 20;
[0165] The steering wheel 10 is connected with the steering column 20.
[0166] The steering column 20 is connected with the input shaft 200 of the clutch mechanism 40.
[0167] Optionally, in some embodiments, the steering system further comprises:
[0168] a running controller 80;
[0169] The running controller 80 is electrically connected with the steering column 20, the driving unit 90 and the clutch mechanism 40 respectively.
[0170] In actual application, the locking assembly 600 of the clutch mechanism 40 can be an electromagnetic lock, and the running controller 80 is electrically connected with the locking assembly 600 of the clutch mechanism 40.
[0171] The steering column 20 further comprises a feel motor 22 and a torque / angle sensor 21, and the running controller 80 is electrically connected with the feel motor 22 and the angle sensor 21 respectively. The feel motor realizes the function of feel simulation.
[0172] The steering gear 50 is further provided with a wheel end sensor 51, and the running controller 80 is further electrically connected with the wheel end sensor 51.
[0173] The steering column 20 can be connected with the input shaft 200 of the clutch mechanism 40 through at least one universal joint.
[0174] The steering gear 50 is further connected with a tire 60.
[0175] It should be noted that the steering system can be a steer-by-wire system.
[0176] When the clutch mechanism 40 is decoupled, the torque exerted by the driver on the steering wheel 10 cannot be transmitted downward to the steering gear 50 and the tire 60, and the torque exerted by the ground on the steering gear 50 and the tire 60 cannot be transmitted upward to the steering wheel 10, so the tire 60 does not rotate with the steering wheel 10. The running controller 80 receives the torque and / or angle signals sent by the torque and / or angle sensor, the current signal of the feel motor 22, the current signal of the driving unit 90, and the wheel end angle signal sent by the wheel end sensor 51 of the steering gear 50, and then controls the feel motor 22 to rotate the steering wheel 10 to simulate the feel torque according to the preset control strategy.
[0177] When the clutch mechanism 40 is coupled, the driver can normally control the vehicle.
[0178] Reference Figure 11 which shows a system architecture diagram of a steering system of the present application. The system architecture diagram can comprise:
[0179] Terminal 71, vehicle control unit (VCU, Vehicle Control Unit) 72, steering gear 50, electronic control unit (ECU, Electronic Control Unit), electromagnetic lock 800, drive unit 90, feel motor 22, wheel end sensor 51 and / or angle sensor 31.
[0180] The terminal 71 can be any one of a vehicle terminal, a mobile terminal, etc.
[0181] The electronic control unit (ECU) is connected with the vehicle control unit (VCU) 72, the steering gear 50 and the terminal 71 through the bus 73, and the vehicle is linked. The bus 73 is a CAN (Controller Area Network) bus.
[0182] The electromagnetic lock 800, the drive unit 90, the feel motor 22, the wheel end sensor 51 and / or the angle sensor 31 are connected with the electronic control unit 80. The wheel end sensor 51 and / or the angle sensor 31 are connected with the electronic control unit 80 through a signal line. The electromagnetic lock 800, the drive unit 90 and the feel motor 22 are connected with the electronic control unit 80 through three lines respectively, and the three lines include a positive power supply line, a negative power supply line and a signal line. The torque / angle sensor 21 sends the sensor signal to the electronic control unit 80 (ECU) through a signal line. The feel motor 22, the electromagnetic lock 800 and the drive unit 90 send the current signal to the ECU through a signal line. The ECU receives the signal and makes a judgment and decision according to the preset control strategy. The power input of the feel motor 22, the electromagnetic lock 800 and the drive unit 90 is used to execute corresponding actions. The preset control strategy is not limited in the embodiments of the application.
[0183] The coupling / decoupling process of the steering system will be introduced as follows: Figure 2
[0184] (1) Coupling process:
[0185] The electronic control unit 80 controls the drive unit 90 to work, so that the hydraulic pressure of the first sub-chamber 431 is greater than that of the second sub-chamber 432. The partition part 4212 of the piston sliding block 421 is pressed to move towards the output shaft 300, the sliding block part 4211 is driven by the partition part 4212 to move towards the output shaft 300, and the decoupling sliding part 410 is driven by the sliding block part 4211 to move towards the output shaft 300.
[0186] When the driving controller 80 detects a current stall in the drive unit 90, the decoupling slider 410 moves to the coupled position, with the first boss 412 abutting the third stopper 310. At this point, the T-shaped teeth on the decoupling slider 410 near the output shaft 300 engage with the T-shaped slots on the output shaft 300 near the input shaft 200, putting the clutch mechanism in a coupled state.
[0187] Then, when the input shaft 200 rotates, the decoupling sliding member 410 is driven to rotate, and the decoupling sliding member 410 drives the output shaft 300 to rotate, thereby transferring the torque of the input shaft to the output shaft.
[0188] In addition, the driving controller can control the lock pin 611 of the electromagnetic lock 800 to extend and lock the locking portion 411, so that the clutch mechanism maintains the coupling state.
[0189] (2) Decoupling process:
[0190] The driving controller 80 controls the lock pin 611 of the electromagnetic lock 800 to retract.
[0191] The driving controller 80 controls the driving unit 90 to work so that the hydraulic pressure of the first sub-chamber 431 is less than the hydraulic pressure of the second sub-chamber 432. The partition part 4212 of the piston slider 421 moves in the direction away from the output shaft 300 under pressure, and the partition part 4212 drives the slider part 4211 to move in the direction away from the output shaft 300. The slider part 4211 drives the decoupling sliding part 410 to move in the direction away from the output shaft 300.
[0192] When the driving controller 80 detects a current stall in the drive unit 90, the decoupling slider 410 moves to the decoupling position, i.e., the end of the decoupling slider 410 away from the output shaft 300 abuts the second boss 221. The T-shaped teeth on the end of the decoupling slider 410 near the output shaft 300 separate from the T-shaped slot on the end of the output shaft 300 near the input shaft 200, and the clutch mechanism is now in the decoupling state.
[0193] Then, when the input shaft 200 rotates, the decoupling sliding member 410 is driven to rotate, and the decoupling sliding member 410 drives the output shaft 300 to rotate, but the decoupling sliding member 410 cannot transfer the torque of the input shaft to the output shaft.
[0194] In addition, the driving controller 80 can control the tactile motor 22 to rotate the steering wheel 10 to simulate the tactile torque according to a preset control strategy.
[0195] (3) Hydraulic holding process:
[0196] When the driving unit 90 is not working, the hydraulic pressure of the first sub-chamber 431 and the second sub-chamber 432 remains unchanged, the axial positions of the partition 4212 of the piston slider 421 and the decoupling slider 410 remain unchanged, and the clutch mechanism 40 maintains the current state.
[0197] In the embodiments of the present application, the working mode of the steering system can also be triggered by the user to set, and the process flow is as follows:
[0198] The first case is the working process of using the "steer-by-wire" mode:
[0199] Step A1, the driving controller 80 receives the first instruction sent by the terminal 71; the first instruction is used to indicate entering the steer-by-wire mode.
[0200] The first instruction can be triggered by the user in the terminal 71.
[0201] Step A2, the driving controller 80 controls the electromagnetic lock to retract the locking pin 611.
[0202] Step A3, the driving controller 80 supplies power to the driving unit 90, and controls the hydraulic pressure of the first sub-chamber 431 to be less than that of the second sub-chamber 432. At this time, as in the foregoing process, the piston slider 421 moves away from the output shaft 300, drives the decoupling slider 410 to separate from the output shaft 300, and then the clutch mechanism is disconnected, and the steering wheel 10 and the steering gear 50 are decoupled.
[0203] The second case is the working process of exiting the "steer-by-wire" mode:
[0204] Step B1, the driving controller 80 receives the second instruction sent by the terminal 71; the second instruction is used to indicate exiting the steer-by-wire mode.
[0205] The second instruction can be triggered by the user in the terminal 71.
[0206] Step B3, the driving controller 80 judges the angle difference between the steering wheel 10 and the tire 60 according to the signals of the torque / angle sensor 21 and the wheel end sensor 51, and controls the steering feeling motor 22 to rotate the steering wheel 10, so that the angle of the steering wheel 10 and the angle of the tire 60 are aligned.
[0207] Step B3, the driving controller 80 supplies power to the driving unit 90, and controls the hydraulic pressure of the first sub-chamber 431 to be greater than that of the second sub-chamber 432. At this time, as in the foregoing process, the piston slider 421 moves close to the output shaft 300, drives the decoupling slider 410 to combine with the output shaft 300, and then the clutch mechanism is engaged, and the steering wheel 10 and the steering gear 50 are coupled.
[0208] Step B4, the driving controller 80 controls the electromagnetic lock to extend the locking pin 611;
[0209] Step B6, the travel controller 80 controls the driving unit 90 to be powered off, so that the hydraulic pressure of the first sub-chamber 431 and the hydraulic pressure of the second sub-chamber 432 remain unchanged, and the clutch mechanism remains in the engaged state. The travel controller 80 controls the vehicle to exit the steer-by-wire mode, and controls the steering gear 50 to realize the power steering function.
[0210] In the embodiment of the present application, in the clutch mechanism, the decoupling assembly 400 driven by fluid pressure is integrated with the input shaft 200, so that the external input fluid can control the decoupling assembly 400 to be coupled or decoupled with the output shaft 300 in the axial direction of the input shaft 200. In this way, the decoupling assembly 400 driven by fluid pressure is integrated in the internal space of the clutch mechanism, so that the motor does not need to be directly arranged on the pipe column of the clutch mechanism, thereby relatively reducing the space occupied by the decoupling structure, reducing the space arrangement limitation, and making the arrangement mode more flexible.
[0211] The embodiment of the present application also discloses a vehicle comprising the above-mentioned steering system.
[0212] It should be noted that in the embodiment of the present application, the structure of the motor is the same as that of the motor described in any of the above-mentioned embodiments, and the beneficial effects are similar, which will not be repeated here.
[0213] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0214] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A clutch mechanism, characterized in that: include: Input shaft (200); Output shaft (300); a drive unit (90); A decoupling assembly (400) is connected to the input shaft (200), and when the decoupling assembly (400) slides along a first direction under the drive of the driving unit (90), it is decoupled or coupled with the output shaft (300).
2. The clutch mechanism according to claim 1, characterized in that: The driving unit (90) is a fluid pressure driving unit; The fluid pressure driving unit is used to control the pressure in the decoupling assembly (400), so that the decoupling assembly (400) slides along the first direction under the drive of the fluid pressure.
3. The clutch mechanism according to claim 1, characterized in that: Also includes a housing (100); The input shaft (200) and the output shaft (300) are at least partially located in the housing (100) and are rotatably connected to the housing (100).
4. The clutch mechanism according to claim 3, characterized in that: The decoupling assembly (400) comprises: a decoupling sliding member (410), the decoupling sliding member (410) being slidably connected to the input shaft (200) along the first direction and being engaged with the input shaft (200) in a second direction; the first direction being the axial direction of the input shaft (200), and the second direction being the circumferential direction of the input shaft (200); A decoupling drive member (420) is provided, wherein the decoupling drive member (420) and the housing (100) jointly form a pressure chamber (430), and the decoupling drive member (420) is engaged with the decoupling sliding member (410) along the first direction and is slidably connected with the decoupling sliding member (410) along the second direction; the pressure chamber (430) is used to allow fluid to flow in order to drive the decoupling drive member (420) to move along the first direction and drive the decoupling sliding member (410) to move along the first direction, so that the decoupling sliding member (410) is coupled or decoupled with the output shaft (300).
5. The clutch mechanism according to claim 4, characterized in that: The decoupling drive member (420) comprises: A piston slider (421), one side of the piston slider (421) and the housing (100) together forming a pressure chamber (430), and the other side of the piston slider (421) being slidably connected to the first bearing (422) in the second direction; the pressure chamber (430) is used to allow fluid to flow to drive the piston slider (421) to move along the first direction; A first bearing (422), wherein the first bearing (422) is respectively engaged with the piston slider (421) and the decoupling sliding member (410) in the first direction, and is slidably connected with the decoupling sliding member (410) in the second direction.
6. The clutch mechanism according to claim 5, characterized in that: The piston slider (421) includes a slider portion (4211) and a partition portion (4212); The decoupling drive member (420) further includes: at least two sealing members (423); The slider portion (4211), the at least two sealing members (423), and the inner wall of the housing (100) form the pressure chamber (430); The partition (4212) extends into the pressure chamber (430) and is used to separate the pressure chamber (430) into at least two sub-pressure chambers; each of the sub-pressure chambers is connected to a fluid input pipeline.
7. The clutch mechanism according to claim 6, characterized in that: A protrusion (426) is provided on a side of the sliding block (4211) facing the decoupling sliding member (410), and the protrusion (426) abuts against a side of the first bearing (422) away from the output shaft (300).
8. The clutch mechanism according to claim 6, characterized in that: The decoupling assembly (400) further includes: a first limiting member (424), the first limiting member (424) being engaged with an end of the decoupling sliding member (410) away from the output shaft (300); a second limiting member (425), the second limiting member (425) being engaged with an end of the decoupling driving member (420) close to the output shaft (300); The first bearing (422) is located between the first limiting member (424) and the second limiting member (425).
9. The clutch mechanism according to claim 4, characterized in that: Also includes: A locking assembly (600); when the decoupling assembly (400) is coupled to the output shaft (300), the locking assembly (600) is in a locked state to prohibit the decoupling assembly (400) from moving along the first direction.
10. The clutch mechanism according to claim 9, characterized in that: The decoupling sliding member (410) is provided with a locking portion (411) at one end close to the output shaft; The locking assembly (600) includes a locking pin (611); When the decoupling assembly (400) is coupled to the output shaft (300), the locking pin (611) extends into a side of the locking portion (411) away from the output shaft (300).
11. The clutch mechanism according to claim 10, characterized in that: A first boss (412) is further provided on the side wall of the decoupling sliding member (410) at one end close to the output shaft (300); A third position-limiting member (310) corresponding to the first boss (412) is provided at one end of the output shaft (300) close to the input shaft (200), and the third position-limiting member (310) is used to limit the travel of the decoupling assembly (400) when moving toward the output shaft (300).
12. The clutch mechanism according to claim 1 or 11, characterized in that: A second boss (221) is provided on a side wall of the input shaft (200) at one end away from the output shaft (300), and the second boss (221) is used to limit the travel of the decoupling assembly (400) when it moves away from the output shaft (300).
13. The clutch mechanism according to claim 3, characterized in that: Also includes: a limiting guide rail (710), the limiting guide rail (710) being arranged in the inner cavity of the housing (100) at one end away from the output shaft (300); a limiting plate (720), the limiting plate (720) being fixedly connected to the input shaft (200) on a side of the input shaft (200) away from the decoupling assembly (400); a fourth limiting member (730), one end of the fourth limiting member (730) being slidably connected to the limiting plate (720), and the other end of the fourth limiting member (730) being slidably connected to the limiting guide rail (710); When the input shaft (200) rotates, the limiting plate (720) drives the fourth limiting member (730) to move along the limiting guide rail (710) within the travel range of the limiting guide rail (710).
14. A steering system, characterized in that: It comprises a steering gear (50), a steering input assembly (70), and a clutch mechanism (40) according to any one of claims 1 to 13; The steering input assembly (70) is connected to the input shaft (200), and the steering gear (50) is connected to the output shaft (300).
15. The steering system according to claim 14, characterized in that The steering input assembly (70) includes: Steering wheel (10) and steering column (20); The steering wheel (10) is connected to the steering column (20); The steering column (20) is connected to the input shaft (200) of the clutch mechanism (40).
16. The steering system according to claim 15, characterized in that The steering system further comprises: Driving controller (80); The driving controller (80) is electrically connected to the steering column (20), the drive unit (90) and the clutch mechanism (40) respectively.
17. A vehicle, characterized in that: It comprises the clutch mechanism (40) according to any one of claims 1 to 13 or the steering system according to any one of claims 14 to 16.