Transmission device, steering system and vehicle

Abstract

The utility model relates to a transmission device, a steering system and a vehicle. The transmission device comprises a shell, a first transmission part, a second transmission part and a compensation assembly, the first transmission part, the second transmission part and the compensation assembly are contained in the shell, the first transmission part and the second transmission part are in transmission connection, and the compensation assembly is located between the first transmission part and the shell; the compensation assembly comprises a clearance compensation part and a first elastic part, the two ends of the first elastic part abut against the clearance compensation part and the shell respectively in the circumferential direction of the compensation assembly, and the first elastic part pushes the first transmission part to be close to the second transmission part through the clearance compensation part. According to the transmission device, the clearance compensation part is arranged, and the two ends of the first elastic part abut against the clearance compensation part and the shell in the circumferential direction of the compensation assembly, so that the first elastic part can make the first transmission part close to the second transmission part, and therefore the transmission clearance between the first transmission part and the second transmission part is controlled; and the transmission precision and the transmission stability of the transmission device are improved.

Description

Technical Field

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

[0002] In the prior art, during the transmission process, due to the mutual wear between the two transmission parts in the transmission device of the vehicle, the transmission gap between the two transmission parts becomes larger, affecting the transmission stability and transmission accuracy of the transmission device. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a transmission device that improves transmission stability and transmission accuracy, a steering system including the transmission device, and a vehicle including the steering system. Specifically, the present application includes the following technical solutions:

[0004] In a first aspect, an embodiment of the present application provides a transmission device, comprising a shell, and a first transmission member, a second transmission member and a compensation assembly housed in the shell, wherein the first transmission member is transmission-connected to the second transmission member, and the compensation assembly is located between the first transmission member and the shell; the compensation assembly comprises a gap compensation member and a first elastic member, and along the circumference of the compensation member, two ends of the first elastic member respectively abut against the gap compensation member and the shell, and the first elastic member pushes the first transmission member toward the second transmission member through the gap compensation member.

[0005] The transmission device of the present application is provided with a compensation component between the first transmission component and the housing, and the two ends of the first elastic component of the compensation component are made to abut against the gap compensation component and the housing of the compensation component along the circumference of the compensation component, so that the first elastic component can push the first transmission component toward the second transmission component through the gap compensation component, thereby controlling the transmission gap between the first transmission component and the second transmission component, and improving the transmission accuracy and transmission stability of the transmission device of the present application.

[0006] In one embodiment, the gap compensation member includes a first protrusion extending toward the shell, and the shell includes a second protrusion extending toward the gap compensation member; along the circumference of the compensation component, the first protrusion and the second protrusion are circumferentially spaced, and the two ends of the first elastic member respectively abut the first protrusion and the second protrusion.

[0007] In one embodiment, there are multiple first elastic members.

[0008] In one embodiment, there are multiple first protrusions, the number of second protrusions is equal to the number of first protrusions, and along the circumference of the compensation component, there is a first protrusion between every two adjacent second protrusions.

[0009] In one embodiment, the housing is provided with a receiving groove, and the receiving groove is used to receive at least part of the first protrusion, the second protrusion and the first elastic member.

[0010] In one embodiment, the gap compensation member includes a first section close to the first transmission member, and the first section can move toward the first transmission member to compensate for the gap between the first transmission member and the second transmission member.

[0011] In one embodiment, the gap compensation member also includes a second section, which is arranged on the side of the first section away from the first transmission member and abuts against the first section. The rotation of the second section can drive the first section to rotate relative to the shell. The two ends of the first elastic member respectively abut the second section and the shell. The first elastic member can drive the second section to rotate, so that the first section moves toward the first transmission member.

[0012] In one embodiment, the first end surface of the first section facing the second section includes a first helical surface, and the first helical surface extends helically around the axis of the compensation component; the second end surface of the second section facing the first section includes a second helical surface, and the second helical surface extends helically around the axis of the compensation component.

[0013] In one embodiment, the first end surface includes a plurality of first helical surfaces, which are evenly distributed along the circumference of the compensation component; the second end surface includes a plurality of second helical surfaces, which are evenly distributed along the circumference of the compensation component.

[0014] In one embodiment, the heights of each first helical surface and each second helical surface extending helically around the axis of the compensation component are equal.

[0015] In one embodiment, along the circumference of the compensation component, the helix angles of each first helical surface and each second helical surface are less than or equal to the friction angle between the first segment and the second segment.

[0016] In one embodiment, the outer peripheral surface of the first section includes at least one first limiting protrusion extending toward the second section, and the outer peripheral surface of the second section includes at least one second limiting protrusion extending toward the first section. Along the circumference of the compensation component, the first limiting protrusion and the second limiting protrusion are spaced apart to cooperate in limiting the relative rotation angle of the first section and the second section.

[0017] In one embodiment, there are multiple first limiting protrusions, and at least one second limiting protrusion is provided between each two adjacent first limiting protrusions along the circumference of the compensation component; and / or, there are multiple second limiting protrusions, and at least one first limiting protrusion is provided between each two adjacent second limiting protrusions along the circumference of the compensation component.

[0018] In one embodiment, the compensation assembly further includes an elastic top block, which is located between the first transmission member and the gap compensation member, and the gap compensation member pushes the first transmission member toward the second transmission member through the elastic top block. In one embodiment, the elastic top block includes a top block and a second elastic member, and the two ends of the second elastic member are respectively against the first section and the top block, and the top block is connected to the first transmission member, so that the first section can push the top block to slide through the second elastic member, and the top block pushes the first transmission member toward the second transmission member.

[0019] In one embodiment, at least one of the top block and the first section is provided with a groove, and the second elastic member is at least partially received in the groove.

[0020] In one embodiment, the first section is movable toward the top block until it contacts the top block to define a compression amount of the second elastic member.

[0021] In a second aspect, an embodiment of the present application provides a steering system, including a steering input device, a steering actuator, and a transmission device, wherein the steering input device is transmission-connected to a first transmission member of the transmission device, and the steering actuator is transmission-connected to a second transmission member of the transmission device.

[0022] In a third aspect, an embodiment of the present application provides a vehicle, including a steering system.

[0023] It can be understood that the steering systems and vehicles provided in the second and third aspects of the present application have the effect of improving transmission smoothness and transmission accuracy because they adopt the transmission device provided in the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic cross-sectional view of a transmission device provided in one embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the exploded structure of a transmission device provided in one embodiment of the present application;

[0026] Figure 3 A schematic diagram of a partial structure of a gap compensation member provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a partial structure of a housing provided in one embodiment of the present application;

[0028] Figure 5 A schematic diagram of the installation position of the first elastic member of the compensation assembly provided in one embodiment of the present application;

[0029] Figure 6 This is a structural schematic diagram of the first section of a gap compensation member provided in one embodiment of the present application;

[0030] Figure 7 A schematic structural diagram of a second section of a gap compensation member provided in an embodiment of the present application;

[0031] Figure 8 This is a schematic diagram of the partial structure of a transmission device provided in an embodiment of the present application.

[0032] The accompanying drawings are marked as follows: 100-transmission device; 10-housing; 11-second protrusion; 111-third protrusion; 112-fourth protrusion; 12-receiving groove; 13-housing body; 131-threaded hole; 14-end cover; 141-guide hole; 21-first transmission member; 22-second transmission member; 30-compensation assembly; 31-gap compensation member; 311-first protrusion; 3111-first protrusion; 3112-second protrusion; 312-first section; 3121-first end face; 3122-first helical surface; 3123-second groove; 313-first Section 2; 3131-second end face; 3132-second spiral surface; 3141-first limiting protrusion; 3142-second limiting protrusion; 315-connecting hole; 32-first elastic member; 321-first circumferential elastic member; 322-second circumferential elastic member; 33-elastic top block; 331-top block; 3311-first groove; 3312-friction part; 3313-circumferential receiving groove; 3314-annular groove; 332-second elastic member; 34-groove; 40-third elastic member; 50-limiting member; 60-shaft plug; 70-shock-absorbing ring; 80-buffer member. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0034] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including", "may include", "include", or "may include" used in this application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "including" or "include" indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] The present application provides a vehicle, which includes a steering system. The steering system includes a steering input device, a steering actuator and a transmission device. The transmission device includes a first transmission member and a second transmission member that are transmission-connected to each other, the first transmission member is transmission-connected to the steering input device, and the second transmission member is transmission-connected to the steering actuator.

[0038] Based on the transmission cooperation between the first transmission member and the second transmission member, the torque output by the steering input device is amplified by the transmission device and transmitted to the steering actuator. The steering actuator realizes the corresponding execution function of the steering structure based on the amplified torque.

[0039] In one embodiment, the steering input device includes a steering wheel, and the steering actuator includes a wheel. The steering wheel controls the direction of the wheel through the transmission device, thereby realizing the steering function of the vehicle. It can be understood that in another embodiment, the steering input device and the steering actuator can also be other structures, which are not particularly limited in this application.

[0040] See also Figure 1 The cross-sectional structure diagram of a transmission device 100 provided in one embodiment of the present application is shown in FIG. Figure 2 The figure shows a schematic diagram of the exploded structure of a transmission device 100 provided in one embodiment of the present application.

[0041] like Figure 1 and Figure 2 As shown, the transmission device 100 of the present application includes a housing 10, a first transmission member 21, a second transmission member 22 and a compensation assembly 30. The first transmission member 21, the second transmission member 22 and the compensation assembly 30 are all accommodated in the housing 10. The first transmission member 21 and the second transmission member 22 are in transmission connection with each other.

[0042] Along the arrangement direction of the first transmission member 21 and the second transmission member 22, the first transmission member 21 is closer to the compensation component 30 than the second transmission member 22. The compensation component 30 is located between the first transmission member 21 and the housing 10. The axial direction of the compensation component 30 coincides with the arrangement direction of the first transmission member 21 and the second transmission member 22. The compensation component 30 is used to compensate for the transmission clearance increased by the wear during the transmission of the first transmission member 21 and the second transmission member 22.

[0043] Specifically, the compensation assembly 30 includes a gap compensation member 31 and a first elastic member 32. The gap compensation member 31 can push the first transmission member 21 along the axial direction of the compensation assembly 30. Along the circumferential direction of the compensation assembly 30, the two ends of the first elastic member 32 respectively abut against the gap compensation member 31 and the housing 10. After the assembly is completed, the first elastic member 32 is in a pre-stressed state, and the elastic force in the first elastic member 32 can drive the gap compensation member 31 to move.

[0044] During the operation of the transmission device 100 of the present application, the meshing surface between the first transmission member 21 and the second transmission member 22 will be gradually worn as the transmission process proceeds, thereby causing the transmission gap between the first transmission member 21 and the second transmission member 22 to increase.

[0045] When the transmission gap between the first transmission member 21 and the second transmission member 22 is too large, the radial thickness of the transmission teeth of the first transmission member 21 and the second transmission member 22 that mesh with each other is relatively small, which results in a reduction in the service life of the first transmission member 21 and the second transmission member 22. At the same time, when the first transmission member 21 and the second transmission member 22 need to be reversing transmission, the relatively large transmission gap will cause the first transmission member 21 and the second transmission member 22 to separate from each other during the transmission process, thereby affecting the transmission stability and transmission accuracy of the first transmission member 21 and the second transmission member 22.

[0046] On the other hand, when the first transmission member 21 and the second transmission member 22 need to switch transmission, the relatively large transmission gap can also cause the first transmission member 21 and the second transmission member 22 to collide with each other and produce abnormal noise, thereby affecting the user experience.

[0047] Therefore, the transmission device 100 of the present application is provided with the gap compensation member 31, and the two ends of the first elastic member 32 respectively abut against the gap compensation member 31 and the housing 10, so that when the transmission gap between the first transmission member 21 and the second transmission member 22 increases due to transmission wear, the first elastic member 32 can push the first transmission member 21 to move closer to the second transmission member 22 through the gap compensation member 31. In this way, the transmission gap between the first transmission member 21 and the second transmission member 22 is reduced, the service life of the first transmission member 21 and the second transmission member 22 is increased, the user experience is improved, and the transmission accuracy and transmission stability of the transmission device 100 of the present application are improved.

[0048] In the prior art, the first elastic member is usually arranged in the gap compensating member along the circumferential direction of the compensation assembly. In the prior art, due to the space size of the gap compensating member, when the first elastic member is installed in the gap compensating member, a single first elastic member can usually only store a small elastic force. In actual use, as the transmission wear between the first transmission member and the second transmission member increases, the elastic force inside the first elastic member will also decrease. When the elastic force of the first elastic member is too small, the compensation function of the compensation assembly fails, and it is difficult to further compensate for the transmission gap between the first transmission member and the second transmission member.

[0049] Therefore, compared with the prior art, the transmission device 100 of the present application sets the first elastic member 32 between the gap compensation member 31 and the housing 10, avoiding the installation space of the first elastic member 32 being limited by the space of the gap compensation member 31, so that the first elastic member 32 of the transmission device 100 of the present application can store a larger elastic force. Therefore, the elastic force stored in the first elastic member 32 can compensate for the greater transmission wear between the first transmission member 21 and the second transmission member 22, thereby improving the transmission accuracy and transmission stability of the transmission device 100 of the present application, and improving the service life of the transmission device 100 of the present application.

[0050] In this embodiment, the first transmission member 21 is a rack, and the second transmission member 22 is a gear. It is understandable that in other embodiments, the first transmission member 21 and the second transmission member 22 can also be matched and set based on actual usage. For example, the first transmission member 21 and the second transmission member 22 are a worm wheel and a worm, respectively, or the first transmission member 21 and the second transmission member 22 are two gears, respectively. This application does not specifically limit this.

[0051] See also Figure 3 The partial structural diagram of the gap compensation member 31 provided in one embodiment of the present application is shown in FIG. Figure 4 A schematic diagram of the partial structure of a housing 10 provided in one embodiment of the present application.

[0052] like Figure 3 and Figure 4 As shown, along the axial direction of the compensation assembly 30 , the clearance compensation member 31 includes a first protrusion 311 , and the first protrusion 311 extends toward the housing 10 . The housing 10 includes a second protrusion 11 , and the second protrusion 11 extends toward the clearance compensation member 31 .

[0053] Along the circumference of the compensation component 30, the first protrusion 311 and the second protrusion 11 are circumferentially spaced, and the two ends of the first elastic member 32 respectively abut against the first protrusion 311 and the second protrusion 11. That is, the first elastic member 32 drives the gap compensation member 31 to displace relative to the housing 10 through the first protrusion 311 and the second protrusion 11, thereby driving the gap compensation member 31 to push the first transmission member 21 to move closer to the second transmission member 22, thereby realizing the compensation function of the compensation component 30 for the transmission gap between the first transmission member 21 and the second transmission member 22.

[0054] In one embodiment, there are multiple first elastic members 32. The two ends of the multiple first elastic members 32 respectively abut against the first protrusion 311 and the second protrusion 11. It can be understood that the mutual cooperation of the multiple first elastic members 32 improves the driving force for driving the gap compensation member 31 to generate displacement when the transmission gap between the first transmission member 21 and the second transmission member 22 increases, thereby improving the displacement rate of the gap compensation member 31, so that the response speed of the compensation assembly 30 is improved.

[0055] At the same time, the provision of multiple first elastic members 32 also avoids the phenomenon of drive failure caused by damage to a single first elastic member 32, and ensures the compensation function of the compensation component 30 for the transmission gap between the first transmission member 21 and the second transmission member 22.

[0056] On the other hand, the provision of multiple first elastic members 32 also enhances the elastic force between the gap compensation member 31 and the housing 10, so that the compensation assembly 30 can compensate for the larger transmission wear between the first transmission member 21 and the second transmission member 22, thereby improving the transmission accuracy and transmission stability of the transmission device 100 of the present application, and improving the service life of the transmission device 100 of the present application.

[0057] In one embodiment, there are multiple first protrusions 311, and the number of second protrusions 11 is equal to the number of first protrusions 311. Along the circumference of the compensation component 30, one first protrusion 311 is provided between every two adjacent second protrusions 11.

[0058] It can be understood that the matching arrangement of the plurality of first protrusions 311 and the plurality of second protrusions 11 enables the opposite ends of each first elastic member 32 to respectively abut against a first protrusion 311 and a second protrusion 11, and enables the plurality of first elastic members 32 to be arranged along the circumference of the compensation component 30. This is beneficial for the compensation component 30 to improve the compensation response rate of the transmission gap between the first transmission member 21 and the second transmission member 22 through the plurality of first elastic members 32, thereby improving the transmission accuracy and transmission stability of the transmission device 100 of the present application.

[0059] In one embodiment, along the circumference of the compensation component 30 , the first protrusions 311 are evenly distributed, and the second protrusions 11 are evenly distributed, so that the compression amounts of the first elastic members 32 are equal, thereby ensuring the smooth operation of the gap compensation member 31 .

[0060] For example, see Figure 5 The figure shows a schematic diagram of the installation position of the first elastic member 32 of the compensation assembly 30 provided in one embodiment of the present application.

[0061] like Figure 5 As shown, the number of the first protrusions 311 is two, namely the first protrusion 3111 and the second protrusion 3112. The number of the second protrusions 11 is two, namely the third protrusion 111 and the fourth protrusion 112. Along the circumference of the compensation component 30, the first protrusion 3111, the third protrusion 111, the second protrusion 3112 and the fourth protrusion 112 are arranged in sequence.

[0062] Correspondingly, the first elastic member 32 is also provided with two, namely a first circumferential elastic member 321 and a second circumferential elastic member 322. The two ends of the first circumferential elastic member 321 respectively abut against the first protrusion 3111 and the third protrusion 111, and the two ends of the second circumferential elastic member 322 respectively abut against the second protrusion 3112 and the fourth protrusion 112.

[0063] It can be understood that when the first transmission member 21 and the second transmission member 22 are worn, the elastic force stored in the first circumferential elastic member 321 and the second circumferential elastic member 322 drives the gap compensation member 31 to move relative to the housing 10 through the first protrusion 3111 and the second protrusion 3112, respectively, thereby driving the gap compensation member 31 to push the first transmission member 21 toward the second transmission member 22, so as to achieve the control of the transmission gap between the first transmission member 21 and the second transmission member 22 by the compensation component 30. This improves the transmission stability and transmission accuracy of the transmission device 100 of the present application.

[0064] In other embodiments, according to different transmission requirements of the transmission device 100 of the present application, the number of the first protrusions 311 and the second protrusions 11, the arrangement of the first protrusions 311 and the second protrusions 11, and the elastic coefficient of the first elastic member 32 can also be set to other values, and the present application does not impose any special restrictions on this.

[0065] In one embodiment, if Figure 3 and Figure 4 As shown, along the axial direction of the compensation assembly 30, the end surface of the housing 10 facing the gap compensation member 31 is provided with a receiving groove 12. The first protrusion 311 is protruded from the end surface of the gap compensation member 31 facing the housing 10, and at least partially extends into the receiving groove 12. The second protrusion 11 is protruded from the bottom of the receiving groove 12. The first elastic member 32 is at least partially received in the receiving groove 12.

[0066] It can be understood that the setting of the receiving groove 12 enables the annular receiving groove 12 to accommodate at least part of the first protrusion 311, the second protrusion 11 and the first elastic member 32, thereby ensuring that the first elastic member 32 can compensate for the transmission gap between the first transmission member 21 and the second transmission member 22 through the gap compensation member 31, while reducing the axial size of the compensation assembly 30, thereby facilitating the miniaturization of the transmission device 100 of the present application.

[0067] In another embodiment, the receiving groove 12 may also be provided on the end surface of the gap compensation member 31 facing the housing 10. In another embodiment, the receiving groove 12 may also be partially provided on the gap compensation member 31 and partially provided on the housing 10. This application does not impose any particular limitation on this.

[0068] In one embodiment, the gap compensating member 31 includes a first section 312, and the first section 312 is close to the first transmission member 21. When the transmission gap between the first transmission member 21 and the second transmission member 22 increases, the first elastic member 32 transmits its elastic force to the gap compensating member 31. After receiving the elastic force of the first elastic member 32, the first section 312 of the gap compensating member 31 can move toward the first transmission member 21 to push the first transmission member 21 toward the second transmission member 22, thereby achieving gap compensation between the first transmission member 21 and the second transmission member 22.

[0069] In one embodiment, the gap compensating member 31 further includes a second section 313. The second section 313 is disposed on a side of the first section 312 away from the first transmission member 21, and abuts against the first section 312. The second section 313 is closer to the first elastic member 32 than the first section 312, and the second section 313 abuts against the first elastic member 32. The first section 312 and the second section 313 rotate relative to each other so that the gap compensating member 31 can push the first transmission member 21 toward the second transmission member 22.

[0070] That is, when the transmission gap between the first transmission member 21 and the second transmission member 22 increases, the first elastic member 32 transmits its elastic force to the second section 313 of the gap compensation member 31, and causes the second section 313 to rotate. The rotation of the second section 313 can drive the first section 312 of the gap compensation member 31 to rotate relative to the housing 10, and causes the first section 312 to move toward the first transmission member 21, so as to push the first transmission member 21 toward the second transmission member 22, thereby realizing the gap compensation between the first transmission member 21 and the second transmission member 22.

[0071] For details, please refer to Figure 6 See FIG. 1 for a schematic structural diagram of a first section 312 of a gap compensation member 31 provided in an embodiment of the present application. Figure 7 The structure diagram of the second section 313 of the gap compensation member 31 provided in one embodiment of the present application is shown.

[0072] like Figure 6 and Figure 7 As shown, the first end surface 3121 of the first section 312 facing the second section 313 includes a first helical surface 3122, and the second end surface 3131 of the second section 313 facing the first section 312 includes a second helical surface 3132. The first helical surface 3122 extends spirally around the axis of the compensation component 30. The second helical surface 3132 extends threadedly around the axis of the compensation component 30. The first helical surface 3122 and the second helical surface 3132 abut against each other.

[0073] Specifically, Figure 6 and Figure 7 As shown, when the first section 312 rotates relative to the housing 10 and the second section 313 is stationary relative to the housing 10, the first helical surface 3122 slides relative to the second helical surface 3132 along the spiral extension direction of the second helical surface 3132, thereby causing the first section 312 to slide along the axial direction of the compensation component 30 toward the first transmission member 21.

[0074] When the second section 313 rotates relative to the shell 10 and the first section 312 is stationary relative to the shell 10, the second helical surface 3132 slides relative to the first helical surface 3122 along the spiral extension direction of the first helical surface 3122, so that the second section 313 slides toward the shell 10 along the axial direction of the compensation component 30.

[0075] That is, the abutment relationship between the first section 312 and the second section 313 causes the first section 312 and the second section 313 to slide in opposite directions along the axial direction of the compensation component 30 when the first section 312 and the second section 313 rotate relative to each other, thereby increasing the axial length of the gap compensation member 31.

[0076] In this embodiment, the first elastic member 32 is located between the second section 313 of the gap compensation member 31 and the housing 10. When the transmission gap between the first transmission member 21 and the second transmission member 22 increases, the elastic force in the first elastic member 32 acts on the second section 313 of the gap compensation member 31, and causes the second section 313 to rotate relative to the housing 10.

[0077] Due to the abutting relationship between the second section 313 and the first section 312, the second section 313 has a tendency to slide away from the first section 312 while rotating relative to the housing 10. In addition, since the end of the second section 313 away from the first section 312 is elastically connected to the housing 10 through the first elastic member 32, it can be understood that the second section 313 can only rotate relative to the housing 10 under the elastic force of the first elastic member 32.

[0078] As the second section 313 rotates, the first section 312 cooperates with the abutting relationship between the first helical surface 3122 and the second helical surface 3132, and the first section 312 rotates relative to the second section 313 and slides toward the first transmission member 21 to push the first transmission member 21 toward the second transmission member 22. Thus, the transmission gap between the first transmission member 21 and the second transmission member 22 is reduced, and the transmission stability and transmission accuracy of the transmission device 100 of the present application are improved.

[0079] It can be understood that in other embodiments, one of the first helical surface 3122 of the first section 312 and the second helical surface 3132 of the second section 313 extends helically around the axis of the compensation component 30 .

[0080] In one embodiment, if Figure 6 and Figure 7 As shown, the first end surface 3121 includes a plurality of first helical surfaces 3122 , and the second end surface 3131 includes a plurality of second helical surfaces 3132 . The plurality of first helical surfaces 3122 and the plurality of second helical surfaces 3132 are evenly distributed along the circumference of the compensation component 30 .

[0081] Each first helical surface 3122 abuts against a second helical surface 3132. When the transmission gap between the first transmission member 21 and the second transmission member 22 increases, the first elastic member 32 causes relative rotation between the first section 312 and the second section 313. At this time, each first helical surface 3122 slides along the spiral extension direction of the corresponding second helical surface 3132 to convert the rotation of the second section 313 into movement toward the first transmission member 21, so that the first transmission member 21 moves closer to the second transmission member 22, thereby achieving gap compensation between the first transmission member 21 and the second transmission member 22.

[0082] In one embodiment, the heights of the first helical surfaces 3122 and the second helical surfaces 3132 extending helically around the axis of the compensation component 30 are equal. Since the first section 312 and the second section 313 rotate relative to each other, and the first section 312 rotates toward the first transmission member 21, the increase in the axial length of the clearance compensation member 31 is limited to the smaller one of the first helical surfaces 3122 and the second helical surfaces 3132 that abut against each other.

[0083] That is, when relative sliding occurs between the first helical surface 3122 and the second helical surface 3132, the greater the difference between the spiral extension heights of the first helical surface 3122 and the second helical surface 3132 along the axis of the compensation component 30, the shorter the distance of relative sliding between the first helical surface 3122 and the second helical surface 3132, and correspondingly, the smaller the increase in the axial length of the gap compensation member 31.

[0084] It can be understood that setting the spiral extension heights of each first helical surface 3122 and each second helical surface 3132 equal around the axis of the compensation component 30 can prevent the first section 312 and the second section 313 from being disengaged from each other due to the first helical surface 3122 and the second helical surface 3132 being held against each other during the process of releasing the elastic force of the first elastic member 32, thereby affecting the movement of the first section 312. In one embodiment, along the circumference of the compensation component 30, the helix angles of each first helical surface 3122 and each second helical surface 3132 are less than or equal to the friction angle between the first section 312 and the second section 313, so as to achieve axial self-locking of the first section 312 and the second section 313.

[0085] It can be understood that the axial self-locking of the first section 312 and the second section 313 prevents the axial length of the clearance compensation member 31 from changing under the external axial impact, thereby ensuring the control effect of the clearance compensation member 31 on the transmission clearance between the first transmission member 21 and the second transmission member 22. Thus, the transmission stability and transmission accuracy of the transmission device 100 of the present application are improved.

[0086] In one embodiment, if Figure 6 and Figure 7 As shown, the outer circumference of the first section 312 of the gap compensation member 31 includes at least one first limiting protrusion 3141 extending toward the second section 313 , and the outer circumference of the second section 313 of the gap compensation member 31 includes at least one second limiting protrusion 3142 extending toward the first section 312 .

[0087] The first limiting protrusion 3141 and the second limiting protrusion 3142 are arranged at intervals along the circumference of the compensation component 30. It can be understood that the arrangement of the first limiting protrusion 3141 and the second limiting protrusion 3142 can limit the relative rotation angle of the first section 312 and the second section 313 of the gap compensation member 31, so that the rotation angle of the first section 312 and the second section 313 can match the spiral extension height of the first helical surface 3122 and the second helical surface 3132, and avoid the phenomenon that the first end face 3121 and the second end face 3131 are separated due to excessive rotation angle. In this way, the abutting relationship between the first section 312 and the second section 313 of the gap compensation member 31 is ensured, and the control function of the gap compensation member 31 on the transmission gap of the first transmission member 21 and the second transmission member 22 is ensured.

[0088] In one embodiment, there are multiple first limiting protrusions 3141, and multiple second limiting protrusions 3142. Along the circumferential direction of the compensation component 30, one second limiting protrusion 3142 is provided between each two adjacent first limiting protrusions 3141, and one first limiting protrusion 3141 is provided between each two adjacent second limiting protrusions 3142. In other embodiments, along the axial direction of the compensation component 30, multiple second limiting protrusions 3142 are provided between each two adjacent first limiting protrusions 3141, and multiple first limiting protrusions 3141 are provided between each two adjacent second limiting protrusions 3142.

[0089] In one embodiment, please refer to Figure 1 and Figure 2 The compensation assembly 30 further includes an elastic top block 33. Along the axial direction of the compensation assembly 30, the elastic top block 33 is located between the first transmission member 21 and the gap compensation member 31 and abuts against the first transmission member 21. The gap compensation member 31 pushes the first transmission member 21 toward the second transmission member 22 through the elastic top block 33.

[0090] Specifically, when the first transmission member 21 and the second transmission member 22 are subjected to transmission wear, the first elastic member 32 drives the first section 312 and the second section 313 of the gap compensation member 31 to rotate relative to each other, so as to increase its own axial dimension and make the first section 312 of the gap compensation member 31 slide toward the elastic top block 33. The gap compensation member 31 compresses the elastic top block 33 to increase the elastic force in the elastic top block 33 and make the elastic top block 33 push the first transmission member 21 and the second transmission member 22 closer to each other, thereby reducing the transmission gap between the first transmission member 21 and the second transmission member 22 that is increased due to transmission wear.

[0091] In this embodiment, elastic force is stored in the elastic top block 33. When the first transmission member 21 and the second transmission member 22 are worn, the elastic force in the elastic top block 33 can also cooperate with the elastic force of the first elastic member 32 transmitted to the elastic top block 33 via the gap compensation member 31, pushing the first transmission member 21 to slide toward the second transmission member 22. Thereby, the transmission gap between the first transmission member 21 and the second transmission member 22 is reduced. That is, the provision of the elastic top block 33 improves the response speed of the first transmission member 21 and the second transmission member 22 whose transmission gap increases due to wear, and improves the transmission stability and transmission accuracy of the transmission device 100 of the present application.

[0092] It can be understood that the matching arrangement of the gap compensating member 31 and the elastic top block 33 enables the elastic force in the elastic top block 33 to timely reduce the transmission gap when transmission wear occurs between the first transmission member 21 and the second transmission member 22. The gap compensating member 31 increases its own axial dimension by using the elastic force of the first elastic member 32 and compresses the elastic top block 33 to increase the elastic force of the elastic top block 33.

[0093] That is, the clearance compensation member 31 is used to compensate for the axial stroke of the elastic top block 33 , so as to ensure the control effect of the elastic force in the elastic top block 33 on the transmission clearance between the first transmission member 21 and the second transmission member 22 .

[0094] In one embodiment, if Figure 1 and Figure 2 As shown, the elastic top block 33 includes a top block 331 and a second elastic member 332. Along the axial direction of the compensation component 30, a groove 34 is provided between the top block 331 and the gap compensation member 31. The second elastic member 332 is received in the groove 34 and respectively abuts against the first section 312 of the gap compensation member 31 and the top block 331.

[0095] Specifically, along the axial direction of the compensation assembly 30, a first groove 3311 is provided on the end surface of the top block 331 facing the gap compensation member 31, and a second groove 3123 is provided on the end surface of the first section 312 of the gap compensation member 31 facing the top block 331. The first groove 3311 is aligned with the second groove 3123 to form a groove 34.

[0096] Along the axial direction of the compensation assembly 30, one end of the second elastic member 332 is received and abutted in the first groove 3311, and the other end is received and abutted in the second groove 3123. The assembled second elastic member 332 is in a pre-compression state.

[0097] When the transmission gap between the first transmission member 21 and the second transmission member 22 increases due to transmission wear, the elastic force stored in the second elastic member 332 pushes the top block 331 to slide toward the first transmission member 21, and pushes the first transmission member 21 to reduce the transmission gap between the first transmission member 21 and the second transmission member 22, so as to improve the transmission stability and transmission accuracy of the transmission device 100 of the present application.

[0098] As the top block 331 slides toward the first transmission member 21, the compression amount of the second elastic member 332 decreases, and the stored elastic force decreases. At this time, the first elastic member 32 releases the elastic force, and the first section 312 moves toward the top block 331. When the top block 331 moves to contact the top block 331, the compression amount of the second elastic member 332 increases to a preset value, so as to push the top block 331 to slide when the transmission gap between the first transmission member 21 and the second transmission member 22 increases.

[0099] It can be understood that the second elastic member 332 is arranged in the groove 34, so that after the second elastic member 332 pushes the top block 331 to reduce the transmission gap between the first transmission member 21 and the second transmission member 22, the first elastic member 32 can supplement the elastic force in the second elastic member 332 through the first section 312, thereby limiting the compression amount of the second elastic member 332. Thus, the response rate of the elastic top block 33 is guaranteed, and the transmission stability and transmission accuracy of the transmission device 100 of the present application are guaranteed.

[0100] See also Figure 8 The schematic diagram of the partial structure of the transmission device 100 provided in one embodiment of the present application is shown in FIG. Figure 1 .

[0101] like Figure 1 and Figure 8 As shown, the transmission device 100 of the present application includes a third elastic member 40, and along the axial direction of the compensation component 30, the third elastic member 40 is abutted between the clearance compensation component 31 and the housing 10. The third elastic member 40 is annular and surrounds the outer edge of the receiving groove 12. The third elastic member 40 is used to absorb external impact to reduce the vibration of the compensation component 30.

[0102] The third elastic member 40 is elastic along the axial direction of the compensation component 30 , and the compression amount of the third elastic member 40 is less than the maximum compression amount of the third elastic member 40 .

[0103] During the operation of the transmission device 100, external impact may act on the compensation component 30 via the first transmission member 21 and the second transmission member 22, causing the compensation component 30 to generate axial displacement along its own axis. In addition, the elastic top block 33 of the compensation component 30 abuts against the first transmission member 21, that is, the elastic top block 33 defines the relative position relationship between the first transmission member 21 and the second transmission member 22.

[0104] When the compensation assembly 30 is axially displaced in a direction away from the first transmission member 21, the elastic top block 33 is separated from the first transmission member 21. During the transmission of the second transmission member 22 by the first transmission member 21, the first transmission member 21 may sway axially under the action of the transmission force of the second transmission member 22, thereby causing radial collision and noise between the first transmission member 21 and the second transmission member 22. This further reduces the transmission stability and transmission accuracy of the first transmission member 21 and the second transmission member 22.

[0105] When the compensation component 30 is axially displaced toward the direction close to the first transmission member 21, the elastic top block 33 causes the first transmission member 21 to squeeze the second transmission member 22, thereby increasing the transmission friction between the first transmission member 21 and the second transmission member 22. This in turn causes increased transmission wear between the first transmission member 21 and the second transmission member 22. At the same time, when the external impact force is too large, the force of the elastic top block 33 pushing the first transmission member 21 is also relatively large, which may cause an axial collision between the first transmission member 21 and the second transmission member 22 and generate noise, affecting the user's experience.

[0106] On the other hand, during the transmission process of the first transmission member 21 and the second transmission member 22, the transmission clearance between the first transmission member 21 and the second transmission member 22 may be affected by other factors other than external impact, for example, manufacturing error, installation error, and dimensional change of the first transmission member 21 and the second transmission member 22 caused by temperature change.

[0107] Thus, the third elastic member 40 is provided so that the third elastic member 40 can absorb external impact and reduce the vibration of the compensation component 30 caused by external impact, thereby ensuring the control effect of the elastic top block 33 of the compensation component 30 on the transmission gap between the first transmission member 21 and the second transmission member 22, so that the transmission gap between the first transmission member 21 and the second transmission member 22 is within a preset range. This further improves the transmission stability and transmission accuracy of the transmission device 100 of the present application.

[0108] In one embodiment, the third elastic member 40 is in a pre-compression state after assembly, and the elastic force stored in the second elastic member 332 after assembly is equal to the elastic force stored in the third elastic member 40. That is, the elastic forces acting on the opposite ends of the gap compensation member 31 along the axial direction of the compensation assembly 30 are balanced. Thus, the transmission device 100 of the present application is in a dynamic balance state.

[0109] When the transmission gap between the first transmission member 21 and the second transmission member 22 increases due to transmission wear, the elastic force stored in the second elastic member 332 pushes the top block 331 to slide toward the first transmission member 21 and pushes the first transmission member 21 to reduce the transmission gap between it and the second transmission member 22.

[0110] At this time, the elastic force in the second elastic member 332 is reduced, the dynamic equilibrium state of the two opposite ends of the gap compensation member 31 is broken, and the elastic force of the second elastic member 332 acting on the first section 312 of the gap compensation member 31 is reduced. The first elastic member 32 drives the second section 313 to rotate, so that the first section 312 rotates relative to the second section 313. The elastic force of the first elastic member 32 cooperates with the abutment relationship between the first end face 3121 and the second end face 3131, so that the first section 312 slides toward the top block 331.

[0111] As for the second section 313, the second section 313 will slide toward the third elastic member 40 along the axial direction of the compensation component 30, thereby increasing the elastic force of the third elastic member 40. As the elastic force of the second elastic member 332 is released, the elastic force in the third elastic member 40 will also push the gap compensation member 31 to slide toward the top block 331, thereby reducing the elastic force in the third elastic member 40.

[0112] When the first section 312 contacts the end surface of the top block 331 provided with the first groove 3311, the first section 312 stops sliding. At the same time, as the first section 312 contacts the top block 331, the second elastic member 332 accommodated in the groove 34 is compressed to the same amount as the initial compression. Correspondingly, the compression amount of the third elastic member 40 is also consistent with its initial compression amount. At this time, the elastic force of the third elastic member 40 is balanced with that of the second elastic member 332.

[0113] That is, the transmission device 100 of the present application sets a groove 34 between the first section 312 of the gap compensation member 31 and the top block 331, and sets a second elastic member 332 in the groove 34, so that the gap compensation member 31 can compensate for the elastic force in the second elastic member 332 after the second elastic member 332 drives the top block 331 to slide. Thus, the control effect of the compensation component 30 on the transmission gap between the first transmission member 21 and the second transmission member 22 is ensured, and the transmission stability and transmission accuracy of the transmission device 100 of the present application are improved.

[0114] On the other hand, the matching arrangement of the third elastic member 40, the second elastic member 332 and the first elastic member 32 enables the top block 331 to still rely on the third elastic member 40 to absorb the axial vibration of the compensation component 30 after reducing the transmission gap between the first transmission member 21 and the second transmission member 22, thereby further ensuring the control effect of the compensation component 30 on the transmission gap between the first transmission member 21 and the second transmission member 22, and improving the transmission smoothness and transmission accuracy of the transmission device 100 of the present application.

[0115] In one embodiment, if Figure 1 and Figure 2As shown, along the axial direction of the compensation component 30, the end of the top block 331 facing the first transmission member 21 is provided with a friction portion 3312, and the friction portion 3312 is used to abut against the first transmission member 21. Based on the rotation of the first transmission member 21 relative to the housing 10 during operation. It can be understood that the setting of the friction portion 3312 can reduce the influence of the top block 331 on the transmission process of the first transmission member 21 while ensuring the control effect of the top block 331 on the transmission gap between the first transmission member 21 and the second transmission member 22. Thereby, the transmission efficiency between the first transmission member 21 and the second transmission member 22 is guaranteed, and the transmission efficiency of the transmission device 100 of the present application is guaranteed.

[0116] In one embodiment, if Figure 1 and Figure 2 As shown, the housing 10 includes a housing body 13 and an end cover 14, the housing body 13 includes a threaded hole 131, the first transmission member 21, the second transmission member 22 and the compensation assembly 30 are accommodated in the threaded hole 131, and the axis of the threaded hole 131 coincides with the axis of the compensation assembly 30. The end cover 14 is threadedly connected to the threaded hole 131 of the housing body 13. Along the axial direction of the compensation assembly 30, the third elastic member 40 is held between the gap compensation member 31 and the end cover 14.

[0117] It can be understood that the threaded connection between the end cover 14 and the shell body 13 allows the end cover 14 to adjust the compression of the third elastic member 40 by controlling the depth of its own screwing into the shell body 13, thereby controlling the absorption effect of the third elastic member 40 on the axial vibration of the compensation component 30.

[0118] In one embodiment, if Figure 1 and Figure 8 As shown, the end cap 14 is partially exposed from the threaded hole 131 of the housing body 13. Based on the threaded connection between the end cap 14 and the housing body 13, the third elastic member 40 is held between the end cap 14 and the compensation assembly 30. It can be understood that the end cap 14 is partially exposed from the housing body 13 so that the user can adjust the depth of the end cap 14 screwed into the housing 10 through the part of the end cap 14 exposed from the housing body 13, thereby realizing the control of the compression amount of the third elastic member 40.

[0119] Based on different use environments of the transmission device 100 of the present application, the changes in the transmission clearance caused by external impacts and other factors that the transmission device 100 of the present application may be subjected to during operation are relatively different. That is, the threaded connection between the end cover 14 and the housing body 13, and the partial exposure of the end cover 14, allow the user to match and set the compression amount of the third elastic member 40 based on different use environments, thereby improving the use range of the transmission device 100 of the present application.

[0120] In one embodiment, if Figure 1 and Figure 8As shown, the transmission device 100 of the present application also includes a limit member 50, which is sleeved on the outer surface of the end cover 14 exposed from the shell body 13 and is threadedly connected to the end cover 14. The limit member 50 also abuts against the outer surface of the shell body 13 to limit the screw-in depth of the end cover 14.

[0121] In another embodiment, the end cap 14 further includes an inner hole (not shown in the figure), and the inner circumference of the inner hole is provided with threads. It can be understood that the user can reach into the inner hole through an external device to control the depth of the end cap 14 screwed into the shell body 13.

[0122] In one embodiment, the thread lead angle between the thread on the outer surface of the end cover 14 and the threaded hole 131 is less than or equal to the friction angle between the end cover 14 and the shell body 13, so that the end cover 14 and the shell body 13 are axially self-locked. It can be understood that the formation of the axial self-locking between the end cover 14 and the shell body 13 avoids the phenomenon that the end cover 14 rotates relative to the shell body 13 under the action of external impact or elastic force, thereby ensuring the screw-in depth of the end cover 14 and the compression amount of the third elastic member 40.

[0123] In one embodiment, if Figure 1 and Figure 8 As shown, the gap compensating member 31 includes a connecting hole 315 that passes through the first section 312 and the second section 313, and the end cover 14 includes a guide hole 141 that is connected to the connecting hole 315. The setting of the connecting hole 315 and the guide hole 141 facilitates the user to insert an external device into the connecting hole 315 through the guide hole 141, so as to use the external device to make the first section 312 and the second section 313 of the gap compensating member 31 produce relative rotation, thereby controlling the axial position of the top block 331. In this way, the initial transmission gap between the first transmission member 21 and the second transmission member 22 is controlled.

[0124] In one embodiment, if Figure 1 and Figure 8 As shown, the transmission device 100 of the present application also includes a shaft plug 60, which is used to seal the guide hole 141 to prevent external impurities from entering the compensation component 30 through the guide hole 141, thereby ensuring the compensation component 30's control function on the transmission clearance between the first transmission member 21 and the second transmission member 22.

[0125] In one embodiment, if Figure 1 As shown, the transmission device 100 of the present application further includes a damping ring 70, which is embedded in the circumferential receiving groove 3313 of the outer circumferential surface of the top block 331 along the circumference of the compensation component 30. The damping ring 70 also abuts against the inner wall of the housing 10 along the radial direction of the compensation component 30.

[0126] During the operation of the transmission device 100, the transmission force between the first transmission member 21 and the second transmission member 22 may cause radial displacement of the top block 331. It can be understood that the damping ring 70 can absorb the radial displacement of the top block 331, prevent the top block 331 from colliding with the housing 10 along the radial direction of the compensation component 30, and ensure the smooth operation of the compensation component 30. Thus, the smooth operation of the transmission device 100 of the present application is ensured.

[0127] In one embodiment, if Figure 1 As shown, there are multiple damping rings 70, and multiple damping rings 70 are embedded in the outer peripheral surface of the top block 331 along the axial direction of the compensation component 30. It can be understood that in this embodiment, the number and setting position of the damping rings 70 can be matched and set based on the actual damping requirements of the transmission device 100 of the present application. The present application does not impose any special restrictions on this.

[0128] In one embodiment, if Figure 1 and Figure 8 As shown, the surface of the top block 331 facing the gap compensation member 31 is also provided with an annular groove 3314, and the annular groove 3314 surrounds the outer edge of the first groove 3311. The transmission device 100 of the present application also includes a buffer member 80, which is embedded in the annular groove 3314 along the axial direction of the compensation component 30 and partially exposed from the annular groove 3314.

[0129] The arrangement of the buffer 80 ensures that when the first section 312 of the gap compensating member 31 slides toward the top block 331, the buffer 80 must be compressed before contacting the end surface of the top block 331. That is, the arrangement of the buffer 80 reduces the impact of the first section 312 of the gap compensating member 31 on the top block 331, and avoids the phenomenon that the top block 331 directly transmits the impact force of the gap compensating member 31 to the first transmission member 21, thereby ensuring the transmission gap between the first transmission member 21 and the second transmission member 22. The transmission stability of the transmission device 100 of the present application is improved.

[0130] It should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0131] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" 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 this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0132] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in the field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application. Ordinary technicians in the field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of this utility model still fall within the scope covered by this utility model.

Claims

1. A transmission device, characterized in that: It comprises a housing, and a first transmission member, a second transmission member and a compensation component housed in the housing, the first transmission member is transmission-connected with the second transmission member, and the compensation component is located between the first transmission member and the housing; The compensation component includes a gap compensation member and a first elastic member. Along the circumference of the compensation component, two ends of the first elastic member respectively abut against the gap compensation member and the shell. The first elastic member pushes the first transmission member toward the second transmission member through the gap compensation member.

2. The transmission device according to claim 1, characterized in that: The gap compensation member includes a first protrusion extending toward the shell, and the shell includes a second protrusion extending toward the gap compensation member; along the circumference of the compensation component, the first protrusion and the second protrusion are circumferentially spaced, and the two ends of the first elastic member respectively abut the first protrusion and the second protrusion.

3. The transmission device according to claim 2, characterized in that: The number of the first elastic members is plural.

4. The transmission device according to claim 3, characterized in that: There are multiple first protrusions, and the number of the second protrusions is equal to the number of the first protrusions. Along the circumference of the compensation component, one first protrusion is provided between every two adjacent second protrusions.

5. The transmission device according to claim 2, characterized in that: The housing is provided with a receiving groove, and the receiving groove is used to receive at least part of the first protrusion, the second protrusion and the first elastic member.

6. The transmission device according to any one of claims 1 to 5, characterized in that: The gap compensating member includes a first section close to the first transmission member, and the first section can move toward the first transmission member to compensate for the gap between the first transmission member and the second transmission member.

7. The transmission device according to claim 6, characterized in that: The gap compensation member also includes a second section, which is arranged on the side of the first section away from the first transmission member and abuts against the first section. The rotation of the second section can drive the first section to rotate relative to the shell. The two ends of the first elastic member respectively abut the second section and the shell. The first elastic member can drive the second section to rotate, so that the first section moves toward the first transmission member.

8. The transmission device according to claim 7, characterized in that: The first end surface of the first section toward the second section includes a first helical surface, which extends helically around the axis of the compensation component; the second end surface of the second section toward the first section includes a second helical surface, which extends helically around the axis of the compensation component.

9. The transmission device according to claim 8, characterized in that: The first end surface includes a plurality of the first helical surfaces, and the plurality of the first helical surfaces are evenly distributed along the circumference of the compensation component; the second end surface includes a plurality of the second helical surfaces, and the plurality of the second helical surfaces are evenly distributed along the circumference of the compensation component.

10. The transmission device according to claim 9, characterized in that: The heights of the first helical surfaces and the second helical surfaces extending helically around the axis of the compensation component are equal.

11. The transmission device according to claim 9, characterized in that: Along the circumference of the compensation component, the helix angle of each of the first helical surfaces and each of the second helical surfaces is less than or equal to the friction angle between the first segment and the second segment.

12. The transmission device according to claim 7, characterized in that: The outer circumferential surface of the first section includes at least one first limiting protrusion extending toward the second section, and the outer circumferential surface of the second section includes at least one second limiting protrusion extending toward the first section. Along the circumference of the compensation component, the first limiting protrusion and the second limiting protrusion are arranged at intervals to cooperate in limiting the relative rotation angle of the first section and the second section.

13. The transmission device according to claim 12, characterized in that: There are multiple first limiting protrusions, and along the circumference of the compensation component, at least one second limiting protrusion is provided between every two adjacent first limiting protrusions; and / or, There are multiple second limiting protrusions, and along the circumference of the compensation component, at least one first limiting protrusion is arranged between every two adjacent second limiting protrusions.

14. The transmission device according to claim 6, characterized in that: The compensation component further includes an elastic top block, wherein the elastic top block is located between the first transmission member and the gap compensation member, and the gap compensation member pushes the first transmission member toward the second transmission member through the elastic top block.

15. The transmission device according to claim 14, characterized in that: The elastic top block includes a top block and a second elastic member, two ends of the second elastic member respectively abut against the first section and the top block, and the top block is connected to the first transmission member so that the first section can push the top block to slide through the second elastic member, and the top block pushes the first transmission member toward the second transmission member.

16. The transmission device according to claim 15, characterized in that: At least one of the top block and the first section is provided with a groove, and the second elastic member is at least partially received in the groove.

17. The transmission device according to claim 16, characterized in that: The first section is movable toward the top block until it contacts the top block to limit the compression amount of the second elastic member.

18. A steering system, characterized in that: It comprises a steering input device, a steering actuator, and a transmission device as described in any one of claims 1 to 17, wherein the steering input device is transmission-connected to a first transmission member of the transmission device, and the steering actuator is transmission-connected to a second transmission member of the transmission device.

19. A vehicle, characterized in that: It comprises the steering system as claimed in claim 18 or the transmission device as claimed in any one of claims 1-17.

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