Steering device and vehicle

Abstract

The present application discloses a steering device, which belongs to the field of vehicle technology. The steering device includes a steering assembly and a locking assembly, wherein the steering assembly includes a sun gear, a first planet carrier, a first planet gear and a first ring gear; the sun gear is directly or indirectly connected to the input shaft, the input shaft drives the sun gear to rotate, the first planet carrier is connected to the output shaft, the first planet carrier drives the output shaft to rotate, the first planet carrier, the first planet gear, the first ring gear and the sun gear cooperate to form a first planetary gear set, wherein the first planet gear is rotatably arranged on the first planet carrier, and the first planet gear is respectively meshed with the first ring gear and the sun gear; the locking assembly includes a first state of locking the first ring gear and a second state of locking the first planet carrier. In the embodiment of the present application, the steering device includes two working states: the output shaft and the input shaft rotate synchronously and are disengaged from each other, and in the case of mutual disengagement, the input shaft can rotate arbitrarily, which has the beneficial effect.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a steering device and a vehicle. Background Art

[0002] A steering device is a common device for transmitting torque from an input shaft to an output shaft, and there are many ways to transmit the torque. The steering device can be applied to game simulation equipment or vehicles, etc.

[0003] In the prior art, common steering devices include connecting rod transmission steering devices and planetary gear steering devices. When such steering devices are applied to vehicles, the wheels can be controlled.

[0004] However, the existing steering device does not have a decoupled state, that is, the rotation of the input shaft will inevitably drive the output shaft to rotate. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a steering device and a vehicle, wherein the steering device does not have the problem of a decoupled state.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a steering device, comprising a steering assembly and a locking assembly, wherein the steering assembly is movably connected to the locking assembly;

[0008] The steering assembly includes a sun gear, a first planet carrier, a first planet gear and a first ring gear;

[0009] The steering assembly includes a sun gear, a first planet carrier, a first planet gear and a first ring gear;

[0010] The sun gear is directly or indirectly connected to the input shaft, and the input shaft drives the sun gear to rotate. The first planet carrier is connected to the output shaft, and the first planet carrier drives the output shaft to rotate. The first planet carrier, the first planet gear, the first ring gear and the sun gear cooperate to form a first planetary gear set, wherein the first planet gear is rotatably arranged on the first planet carrier, and the first planet gear is respectively meshed with the first ring gear and the sun gear;

[0011] The locking assembly includes a first state for locking the first ring gear and a second state for locking the first planet carrier.

[0012] In a second aspect, an embodiment of the present application provides a vehicle, comprising a steering device as described above.

[0013] In the embodiment of the present application, at least two rotation conditions of the steering assembly can be achieved by adjusting the locking assembly. The first rotation condition is: the locking assembly is in the first state, the speed of the first ring gear is zero, the first planetary carrier rotates, and the output shaft and the input shaft have the same speed or a speed corresponding to the transmission ratio, and normal transmission can be performed; the second rotation condition is: the locking assembly is in the second state, the speed of the first planetary carrier is zero, the first ring gear will be in an idling state, the output shaft and the input shaft are in a state of mutual disengagement, and the rotation of the input shaft will not affect the rotation of the output shaft. The steering device in the embodiment of the present application includes two working states: the output shaft and the input shaft rotate synchronously and disengage from each other, and in the case of mutual disengagement, the input shaft can rotate arbitrarily, which has the beneficial effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an exploded schematic diagram of a steering device in an embodiment of the present application;

[0015] Figure 2 is a structural schematic diagram of a locking assembly in a steering device in an embodiment of the present application when the locking assembly is in a first state;

[0016] Figure 3 is a schematic structural diagram of a locking assembly in a steering device in an embodiment of the present application when the locking assembly is in a second state;

[0017] Figure 4 is an exploded schematic diagram of a locking assembly in an embodiment of the present application;

[0018] Figure 5 is a cross-sectional schematic diagram of a locking assembly in an embodiment of the present application;

[0019] Figure 6 is a front view of a locking assembly in an embodiment of the present application;

[0020] Figure 7 is a schematic structural diagram of the first housing in an embodiment of the present application;

[0021] Figure 8 is a cross-sectional schematic diagram of a first housing in an embodiment of the present application;

[0022] Fig. 9 is a schematic diagram of the structure of the second housing in an embodiment of the present application;

[0023] Fig.10 It is a schematic diagram of the structure of the threaded rod in the embodiment of the present application;

[0024] Fig.11 is a structural schematic diagram of a nut rotor in an embodiment of the present application;

[0025] Fig.12is an exploded schematic diagram of another steering device in an embodiment of the present application;

[0026] Fig.13 is a structural schematic diagram of another steering device in an embodiment of the present application when the locking assembly is in a first state;

[0027] Fig.14 is a cross-sectional schematic diagram of another steering device in an embodiment of the present application when the locking assembly is in a first state;

[0028] Fig.15 is a structural schematic diagram of another steering device in an embodiment of the present application when the locking assembly is in the second state;

[0029] Fig.16 is a cross-sectional schematic diagram of another steering device in an embodiment of the present application when the locking assembly is in a second state;

[0030] Fig.17 is a side schematic diagram of a steering assembly in another steering device in an embodiment of the present application;

[0031] Fig.18 is an exploded schematic diagram of another steering device in an embodiment of the present application;

[0032] Fig.19 is a structural schematic diagram of a locking assembly in a steering device in another embodiment of the present application when the locking assembly is in a first state;

[0033] Fig. 20 It is a cross-sectional schematic diagram of a locking assembly in a steering device in another embodiment of the present application when it is in a first state.

[0034] Description of reference numerals:

[0035] 10. Steering assembly; 11. Second planetary carrier; 12. Second planetary gear; 13. Second ring gear; 14. Sun gear; 15. First planetary carrier; 16. First planetary gear; 17. First ring gear; 18. Ring gear fixing plate; 181. First locking structure; 19. Output shaft fixing plate; 191. Second locking structure; 20. Locking assembly; 21. Housing; 211. First housing; 2111. Positioning groove; 2112. Mounting portion; 2113. Clearance hole; 2114. First covering portion; 212. Second housing ; 2121, connector; 2122, second cover part; 2123, positioning block; 213, limiting hole; 22, first drive member; 221, brush; 222, yoke; 223, nut rotor; 224, threaded hole; 225, winding groove; 23, threaded rod; 231, threaded part; 232, anti-rotation part; 233, first limiting part; 234, second limiting part; 24, second drive member; 25, push rod mechanism; 251, push rod structure; 252, locking member; 26, valve body; 27, valve stem. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0038] The steering device and vehicle provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0039] See also Figures 1 to 20 , an embodiment of the present application provides a steering device, comprising a steering assembly 10 and a locking assembly 20, wherein the steering assembly 10 is movably connected to the locking assembly 20;

[0040] The steering assembly 10 includes a sun gear 14, a first planet carrier 15, a first planet gear 16 and a first ring gear 17;

[0041] The sun gear 14 is directly or indirectly connected to the input shaft, and the input shaft drives the sun gear 14 to rotate. The first planet carrier 15 is connected to the output shaft, and the first planet carrier 15 drives the output shaft to rotate. The first planet gear 16 is rotatably arranged on the first planet carrier 15, and the first planet gear 16 is respectively meshed with the first ring gear 17 and the sun gear 14;

[0042] The locking assembly 20 includes a first state for locking the first ring gear 17 and a second state for locking the first planet carrier 15 .

[0043] In the embodiment of the present application, the first planet carrier 15, the first planetary gear 16, the first ring gear 17 and the sun gear 14 can cooperate to form a first planetary gear set, and at least two rotation conditions of the steering assembly 10 can be achieved by adjusting the locking assembly 20. The first rotation condition is: the locking assembly 20 is in the first state, the speed of the first ring gear 17 is zero, the first planet carrier 15 rotates, and the output shaft and the input shaft have the same speed or a speed corresponding to the transmission ratio, and normal transmission can be performed; the second rotation condition is: the locking assembly 20 is in the second state, the speed of the first planet carrier 15 is zero, the first ring gear 17 will be in an idling state, and the output shaft and the input shaft are in a state of mutual disengagement, and the rotation of the input shaft will not affect the rotation of the output shaft. In the embodiment of the present application, the steering device includes two working states: the output shaft and the input shaft rotate synchronously and are disengaged from each other, and in the case of mutual disengagement, the input shaft can rotate arbitrarily.

[0044] Optionally, in an embodiment of the present application, the locking assembly 20 includes a driving member and a locking mechanism, the driving member is connected to the locking mechanism, and the driving member drives the locking mechanism to move;

[0045] In the first state, the driving member drives the locking mechanism to lock the first gear ring 17;

[0046] In the second state, the driving member drives the locking mechanism to lock the first planet carrier 15 .

[0047] In the embodiment of the present application, the drive member is used to drive the activity of the locking mechanism, and the locking mechanism can cooperate with the steering assembly 10 to lock the first ring gear 17 or the first planetary carrier 15. In particular, when the locking assembly 20 is in the first state, the drive member drives the locking mechanism to lock the first ring gear 17, at which time the rotation speed of the first ring gear 17 is zero, the second planetary carrier 11 and the first planetary carrier 15 have the same rotation speed, and the corresponding output shaft and input shaft will rotate synchronously; when the locking assembly 20 is in the second state, the drive member drives the locking mechanism to lock the first planetary carrier 15, at which time the rotation speed of the first planetary carrier 15 is zero, and the corresponding output shaft rotation speed is also zero, the second planetary carrier 11 drives the first ring gear 17 to idle, the output shaft and the input shaft are in a state of being disengaged from each other, and the rotation of the input shaft will not affect the rotation of the output shaft.

[0048] Optionally, in an embodiment of the present application, a first locking structure 181 is provided on the first ring gear 17, and a second locking structure 191 is provided on the first planetary carrier 15; or, a ring gear fixing plate 18 is provided on the first ring gear 17, the ring gear fixing plate 18 is fixedly connected to the first ring gear 17, the first locking structure 181 is provided on the ring gear fixing plate 18, the output shaft is fixedly connected to an output shaft fixing plate 19, the output shaft is fixedly connected to the first planetary carrier 15, and the second locking structure 191 is provided on the output shaft fixing plate 19;

[0049] In the first state, the driving member drives the locking mechanism to be engaged with the first locking structure 181 ; in the second state, the driving member drives the locking mechanism to be engaged with the second locking structure 191 .

[0050] In the embodiment of the present application, the first locking structure 181 can be used to cooperate with the locking assembly 20 to directly or indirectly lock the first ring gear 17, and the second locking structure 191 can be used to cooperate with the locking assembly 20 to directly or indirectly lock the first planet carrier 15. Specifically, when the first locking structure 181 is directly arranged on the first ring gear 17, the locking mechanism in the locking assembly 20 can be connected to the first locking structure 181 to achieve direct locking of the first ring gear 17; when the second locking structure 191 is directly arranged on the first planet carrier 15, the locking mechanism in the locking assembly 20 can be connected to the second locking structure 191 to achieve direct locking of the first planet carrier 15.

[0051] The first locking structure 181 is arranged on the ring gear fixing plate 18. Since the ring gear fixing plate 18 is fixedly connected to the first ring gear 17, after the ring gear fixing plate 18 is locked, the first ring gear 17 can be indirectly locked. At this time, the locking mechanism in the locking assembly 20 can be clamped to the first locking structure 181 to achieve indirect locking of the first ring gear 17; the second locking structure 191 is arranged on the output shaft fixing plate 19. Since the output shaft fixing plate 19 is fixedly connected to the first planetary carrier 15, after the output shaft fixing plate 19 is locked, the first planetary carrier 15 can be indirectly locked. At this time, the locking mechanism in the locking assembly 20 can be clamped to the second locking structure 191 to achieve indirect locking of the first planetary carrier 15.

[0052] It should be noted that the first locking structure 181 and the second locking structure 191 can be set as a locking groove, a locking hole, a locking protrusion, a locking edge, etc. The locking portion of the locking assembly 20 will be provided with a structure matching the first locking structure 181 or the second locking structure 191 to ensure the clamping and locking effect of the locking assembly 20. For example, when the locking hole is set, the locking hole portion can be set as a tapered hole, and the locking portion of the locking assembly 20 will be set as a tapered connector to eliminate the gap.

[0053] It should be noted that the ring gear fixing plate 18 can be connected to the first ring gear 17 as a whole by bolts. Since the first ring gear 17 needs to rotate in the decoupled state, the ring gear fixing plate 18 and the planetary carrier are connected together through bearings, which can limit its axial freedom while releasing the rotational freedom.

[0054] The output shaft fixing plate 19 is press-fitted on the output shaft or the first planet carrier 15. For convenience, the output shaft fixing plate 19 can be restricted from rotating by the locking assembly, thereby restricting the output shaft from being fixed when the locking assembly is in the second state. The gear ring fixing plate 18 and the output shaft fixing plate 19 can be axially positioned by a retaining ring.

[0055] Optionally, in an embodiment of the present application, the locking assembly 20 includes one of a screw nut assembly, a push rod assembly, and a valve assembly.

[0056] In the embodiment of the present application, the above structure lists three implementations of the locking assembly 20, but the present application is not limited to the above three implementations, and can also be a gear rack assembly, a pinion assembly, a cam assembly, a crankshaft connecting rod assembly, etc. As long as the corresponding locking function can be achieved.

[0057] It should be noted that when the locking assembly 20 is a screw-nut assembly, the first locking structure 181 or the second locking structure 191 can be clamped by the transmission method of the screw-nut, wherein the screw can be used as an active member, the screw is directly connected to the driving member, and the nut can be used as a driven member, and the nut and the screw can cooperate to clamp the first locking structure 181 or the second locking structure 191. The nut can also be used as an active member and the screw can be used as a driven frame. The above-mentioned screw and nut can be adaptively deformed, and the screw is not necessarily a rod-shaped object, as long as it is connected by thread and the principle of screw nut is adopted.

[0058] When the locking assembly 20 is a push rod assembly, the first locking structure 181 or the second locking structure 191 can be clamped by pushing and pulling the push rod. The push rod can be pushed and pulled by a telescopic structure such as a cylinder, a hydraulic cylinder, or an electric cylinder, or by a motor in combination with a certain transmission mechanism.

[0059] When the locking assembly 20 is configured as a valve assembly, the opening and closing function of the valve assembly can be utilized to clamp the first locking structure 181 or the second locking structure 191 . The valve assembly can include at least one of a hydraulic valve, a solenoid valve, a pneumatic valve or a manual valve.

[0060] See also Figures 1 to 11 Optionally, in an embodiment of the present application, the locking assembly 20 is a screw-nut assembly, the screw-nut assembly includes a housing 21, a first driving member 22 and a threaded rod 23, the housing 21 is fixedly connected to the peripheral member, the housing 21 encloses an accommodating cavity, the first driving member 22 is in the accommodating cavity, and the threaded rod 23 is connected to the first driving member 22;

[0061] The first driving member 22 is provided with a threaded hole 224. When the first driving member 22 is working, the first driving member 22 drives the threaded hole 224 to rotate, and the threaded rod 23 is threadedly connected with the threaded hole 224.

[0062] The housing 21 is provided with a limiting hole 213 adapted to the threaded rod 23, and the limiting hole 213 drives the threaded rod 23 to be slidably connected to the housing 21;

[0063] When the first driving member 22 drives the threaded hole 224 to rotate along the first direction, the threaded rod 23 moves toward the direction of the first locking structure 181 and moves to a position to engage with the first locking structure 181; when the first driving member 22 drives the threaded hole 224 to rotate along the second direction, the threaded rod 23 moves toward the direction of the second locking structure 191 and moves to a position to engage with the second locking structure 191.

[0064] In the embodiment of the present application, the housing 21 is used to protect and limit the first driving member 22 and the threaded rod 23. The first driving member 22 is used to drive the threaded rod 23 to move, specifically, through the cooperation of the threaded hole 224 on the driving member, the threaded rod 23 is driven to move. The limiting hole 213 on the housing 21 can be placed on the threaded rod 23 to rotate, and then the threaded rod 23 can be forced to slide relative to the housing 21. When the first driving member 22 drives the threaded hole 224 to rotate along the first direction, the threaded rod 23 slides in the direction of the first locking structure 181 relative to the housing 21 under the action of the limiting hole 213, and can slide to the position of the first locking structure 181, thereby locking the first gear ring 17; when the first driving member 22 drives the threaded hole 224 to rotate along the second direction, the threaded rod 23 slides in the direction of the second locking structure 191 relative to the housing 21 under the action of the limiting hole 213, and slides to the position of the second locking structure 191, thereby locking the first planet carrier 15.

[0065] It should be noted that the first driving member 22 of the present application may include a brush 221, a yoke 222 and a nut rotor 223, and a threaded hole 224 is provided on the nut rotor 223. The above structure cooperates with the housing 21 and the threaded rod 23 to form a screw nut assembly, which converts the rotary motion into a linear motion by using a screw nut pair, and the structural arrangement is more compact, wherein the threaded rod 23 runs through the entire housing 21, so as to facilitate the locking of the first gear ring 17 when the threaded rod 23 is moving upward, and the locking of the first planetary carrier 15 when the threaded rod 23 is moving downward.

[0066] The nut rotor 223 is made of laminated magnetic steel sheets and has at least one winding groove 225. Six pairs of winding grooves 225 can be provided as required as shown in the attached figure. The present application does not limit the number of winding grooves 225. A hole is opened in the middle of the nut rotor 223, and internal threads are processed to form the threaded hole 224. The threaded hole 224 and the threaded portion 231 of the threaded rod 23 are combined to form a screw nut pair.

[0067] Optionally, in an embodiment of the present application, the threaded rod 23 includes a threaded portion 231, an anti-rotation portion 232, a first limiting portion 233 and a second limiting portion 234, the threaded portion 231 is disposed in the middle of the threaded rod 23, the anti-rotation portion 232 is a section parallel to the axis of the threaded rod 23 and transverse to the threaded portion 231, and the first limiting portion 233 and the second limiting portion 234 are respectively located at two ends of the threaded portion 231;

[0068] The first limiting portion 233 is adapted to the first locking structure 181 , and the second limiting portion 234 is adapted to the second locking structure 191 .

[0069] In the embodiment of the present application, the threaded rod 23 can better cooperate with the housing 21 and the threaded hole 224, wherein the threaded portion 231 can be threadedly connected to the threaded hole 224 to form a screw nut pair. The anti-rotation portion 232 can cooperate with the limiting hole 213 on the housing 21 to prevent the threaded rod 23 from rotating relative to the housing 21, ensuring that the threaded rod 23 only produces linear translation. The first limiting portion 233 can cooperate with the first locking structure 181 and lock the first gear ring 17; the second limiting portion 234 can cooperate with the second locking structure 191 and lock the first planetary carrier 15.

[0070] It should be noted that the housing 21 includes a first housing 211 and a second housing 212. The first housing 211 and the second housing 212 can enclose the above-mentioned accommodation cavity, and the first driving member 22 and part of the threaded rod 23 are both in the accommodation cavity. The first housing 211 and the second housing 212 are both provided with a limiting hole 213 at a position where the threaded rod 23 cooperates. The limiting hole 213 can cooperate with the anti-rotation portion 232 to prevent the threaded rod 23 from rotating relative to the housing 21, so that the threaded rod 23 can only slide relative to the housing 21.

[0071] It should be noted that the first shell 211 is provided with a positioning groove 2111, a mounting portion 2112, a limiting hole 213, a clearance hole 2113 and a first cover portion 2114. Among them, the positioning groove 2111 is used to assemble and position the second shell 212 to quickly cooperate, so as to realize the assembly and positioning of the shell 21; the mounting portion 2112 is used to install the yoke 222 of the motor, and provide the necessary magnetic field for the operation of the first driving member 22. The limiting hole 213 is used to cooperate with the anti-rotation portion 232 of the threaded rod 23 to ensure the translational movement of the threaded rod 23; the clearance hole 2113 is used to cooperate with the plug-in portion 2121 of the second shell 212 to ensure the sealing of the shell 21; the first cover portion 2114 is used to cooperate with the second cover portion 2122 of the second shell 212 to realize the locking of the shell 21.

[0072] The second housing 212 is provided with a plug-in portion 2121, a second cover portion 2122, a positioning block 2123 and a limiting hole 213. The plug-in portion 2121 is used for the first driving member 22 to provide a drive harness connection; the second cover portion 2122 is used to cooperate with the cover feature of the first housing 211 to achieve the locking of the housing 21; the positioning block 2123 is used to cooperate with the positioning groove 2111 of the first housing 211 to achieve the assembly positioning of the housing 21; the limiting hole 213 is used to cooperate with the anti-rotation portion 232 of the threaded rod 23 to ensure the translational movement of the threaded rod 23.

[0073] At least one of the inner walls of the above-mentioned limiting hole 213 is an anti-rotation structure, such as an anti-rotation plane, an anti-rotation curved surface, an anti-rotation groove, an anti-rotation edge, etc. The anti-rotation structure is adapted to the anti-rotation portion 232 .

[0074] When the first driving member 22 is energized, the nut rotor 223 rotates under the action of the brush 221 and the yoke 222. At this time, the threaded rod 23 is restricted by the anti-rotation feature of the first housing 211 and moves up and down due to the transmission characteristics of the lead screw nut.

[0075] When the steering system is coupled, that is, when the locking assembly 20 is in the first state, the threaded rod 23 is inserted into the first locking structure 181, the ring gear fixing plate 18 is locked, and then the first ring gear 17 is locked. At this time, under the action of the motion relationship of the double-row planetary gears, the input shaft and the output shaft are transmitted 1:1; when the system is decoupled, that is, when the locking assembly 20 is in the second state, the threaded rod 23 is inserted into the second locking structure 191, the output shaft fixing plate 19 is locked, and then the first planetary carrier 15 is locked. At this time, the output shaft and the input shaft are separated from the transmission relationship, the output shaft cannot rotate, and the input shaft and the output shaft complete the motion decoupling.

[0076] The threaded rod 23 of the screw-nut assembly is in working state in different movement directions, so the response speed is fast. At the same time, thanks to the through structure, the system axial space occupies the pin, and the structure is compact. The screw-nut assembly, because its threaded hole 224 is built into the first drive member 22 and integrated with the rotor design, does not occupy additional space beyond the length of the screw, and can well improve the rigidity of the limiting threaded rod 23 (screw). At the same time, because the length of the screw is not long, its bending resistance is better, and it can bear more loads with the same shaft diameter. When the screw-nut assembly is arranged close to the outside of the fixed disk, the force on the limiting pin is smaller when resisting the same steering torque, which improves the reliability of the torque transmission.

[0077] See also Figures 12 to 17 Optionally, in an embodiment of the present application, the locking assembly 20 is a push rod assembly, the push rod assembly includes a second driving member 24 and a push rod mechanism 25, the second driving member 24 is connected to the push rod mechanism 25, the second driving member 24 is fixedly connected to the peripheral member, and the second driving member 24 drives the push rod mechanism 25 to move;

[0078] The push rod mechanism 25 includes a push rod structure 251 and a locking member 252. The push rod structure 251 is connected to the second driving member 24, and the locking member 252 is connected to the push rod structure 251.

[0079] When the second driving member 24 drives the push rod structure 251 to move in a direction away from the second driving member 24, the push rod structure 251 drives the locking member 252 to move in the direction of the first locking structure 181, and the locking member 252 moves to a position to engage with the first locking structure 181; when the second driving member 24 drives the push rod structure 251 to move in a direction close to the second driving member 24, the push rod structure 251 drives the locking member 252 to move in the direction of the second locking structure 191, and the locking member 252 moves to a position to engage with the second locking structure 191.

[0080] In the embodiment of the present application, the second driving member 24 is configured to drive the push rod mechanism 25 to move, and the first locking structure 181 or the second locking structure 191 is engaged through the push rod mechanism 25 . Specifically, after the push rod mechanism 25 includes the push rod structure 251 and the locking member 252, the push rod structure 251 can be pushed and pulled by the second driving member 24. After the locking member 252 is connected to the push rod structure 251, the push rod structure 251 can drive the locking rod to move; when the second driving member 24 drives the push rod structure 251 to move in the direction away from the second driving member 24, the push rod structure 251 drives the locking member 252 to move in the direction of the first locking structure 181, and the locking member 252 moves to a position that engages with the first locking structure 181, at which time the first ring gear 17 can be directly or indirectly locked; when the second driving member 24 drives the push rod structure 251 to move in a direction close to the second driving member 24, the push rod structure 251 drives the locking member 252 to move in the direction of the second locking structure 191, and the locking member 252 moves to a position that engages with the second locking structure 191, at which time the first planetary carrier 15 can be directly or indirectly locked.

[0081] It should be noted that the second driving member 24 in the push rod assembly can be set as a telescopic member, which can be an electric cylinder, a pneumatic cylinder, a hydraulic cylinder or other structures. The telescopic member drives the push rod structure 251 to extend and retract, so that the locking member 252 is visible to the first locking structure 181 or the second locking structure 191; the second driving member 24 can also be a motor, which uses a worm gear and a lead screw nut to convert the rotational motion of the motor into a linear motion, thereby achieving the effect of pushing and pulling the push rod structure 251. Under the premise of complying with the above driving principle, other forms of motors can also be used to meet system requirements.

[0082] It should also be noted that the push rod assembly used in this embodiment is designed to be small in size, effectively controlling the size of the steering device, and can directly limit the output shaft to achieve locking of the first planet carrier 15, or can additionally press-fit the output shaft fixing plate 19 and limit the output shaft fixing plate 19 to meet the convenience of assembly and facilitate the arrangement of the entire decoupling mechanism on the steering system. In addition, the push rod assembly has a relatively simple and flexible structure, low cost, is very light in operation, and has low noise, which can well meet the requirements of the vehicle for cost reduction and noise reduction.

[0083] See also Figures 18 to 20 Optionally, in an embodiment of the present application, the locking assembly 20 is a valve assembly, and the valve assembly includes a valve body 26 and a valve stem 27, the valve body 26 is fixedly connected to the peripheral member, and the valve stem 27 is movably connected to the valve body 26;

[0084] When the valve assembly is provided with one, the valve stem 27 has a first position in which it is clamped to the first locking structure 181 and a second position in which it is clamped to the second locking structure 191;

[0085] When two valve assemblies are provided, they include a first valve and a second valve. The first valve is arranged opposite to the first locking structure 181 , and the second valve is arranged opposite to the second locking structure 191 .

[0086] In the embodiment of the present application, the above structure can lock the first locking structure 181 or the second locking structure 191 through the valve assembly. Then the transmission state of the steering device is switched. When the valve assembly is provided with one, the position of the valve stem 27 can be changed twice through the valve body 26. When the valve stem 27 moves to the first position, the valve stem 27 is clamped to the first locking structure 181, and when the valve stem 27 moves to the second position, the valve stem 27 is clamped to the second locking structure 191.

[0087] When two valve assemblies are provided, they can be controlled separately by the first valve and the second valve. For example, after the first valve is arranged relative to the first locking structure 181, the first valve can be used to specifically lock or unlock the first locking structure 181. After the second valve is arranged relative to the second locking structure 191, the first valve can be used to specifically lock or unlock the first locking structure 181. With the cooperation of the first valve and the second valve, the state of the steering device can be switched. Specifically, when the locking assembly 20 is in the first state, the first valve locks the first locking structure 181, and the second valve is in an unlocked state relative to the second locking structure 191. At this time, the rotation speed of the first ring gear 17 is zero, and the rotation speeds of the second planetary carrier 11 and the first planetary carrier 15 are the same. At this time, the output shaft and the input shaft have the same rotation speed and can be normally transmitted; when the locking assembly 20 is in the second state, the first valve is in an unlocked state relative to the first locking structure 181, and the second valve locks the second locking structure 191. At this time, the rotation speed of the first planetary carrier 15 is zero, and the second planetary carrier 11 drives the first ring gear 17 to idle. At this time, the output shaft and the input shaft are in a disengaged state, and the rotation of the input shaft will not affect the rotation of the output shaft.

[0088] It should be noted that the valve assembly has its own circuit, is sensitive, quick to respond, and quick to move, with the time being as short as a few milliseconds, making the entire structural mechanism very efficient in switching working modes on the steering system, thereby improving user satisfaction.

[0089] It should be noted that when the valve assembly is set as a solenoid valve, the coil power consumption can be lower when the design is appropriate, which is an energy-saving product. It can also automatically maintain the valve position, consume no electricity at ordinary times, and reduce the power consumption of the entire equipment. The solenoid valve is lightweight, saves space, and is convenient for the layout of the entire mechanism on the steering system. The solenoid valve can block external leakage (the solenoid valve is completed by electromagnetic force acting on the iron core sealed in the magnetic isolation sleeve, and there is no dynamic seal, so external leakage is easy to block), internal leakage is easy to control, and it is safe to use. Internal and external leakage are the main factors that endanger safety, so the use of solenoid valves is particularly safe and can meet the safety and reliability requirements of the steering system.

[0090] It should be noted that a corresponding controller may be provided to control the driving member in the locking assembly 20. For example, the first driving member 22, the second driving member 24 or the solenoid valve may be controlled by a corresponding controller.

[0091] It should be noted that the sun gear 14, planetary gears, and ring gears of the present application are all involute spur gears due to their simple processing and low cost. If they are converted into other types of gears such as involute bevel gears, the transmission can be made smoother and the risk of NVH problems can be reduced. NVH is the abbreviation of noise, vibration, and harshness. This is a comprehensive issue to measure the quality of automobile manufacturing, and it gives the most direct and superficial experience to automobile users. The NVH problem of vehicles is one of the issues that major vehicle manufacturers and parts companies in the international automobile industry are concerned about.

[0092] Optionally, in an embodiment of the present application, the steering assembly 10 further includes a second planet carrier 11, a second planetary gear 12 and a second ring gear 13;

[0093] The second planet carrier 11 is connected to the input shaft, and the second planet carrier 11, the second planetary gear 12, the second ring gear 13 and the sun gear 14 cooperate to form a second planetary gear set, and the second ring gear 13 is locked, wherein the second planetary gear is rotatably arranged on the second planet carrier, and the second planetary gear is respectively meshed with the second ring gear and the sun gear;

[0094] The second planetary gear set and the first planetary gear set share the sun gear 14 .

[0095] In the embodiment of the present application, after the second planetary gear set and the first planetary gear set share the sun gear 14, the two planetary gear sets can be linked together, and different transmission effects can be achieved by locking the corresponding gears. The number of teeth of the same type of gears in the second planetary gear set and the first planetary gear set can be the same or different, which will affect the transmission ratio between the corresponding parts. When the second ring gear 13 is locked, at least two rotation conditions can be achieved by adjusting the locking assembly 20. The first rotation condition is: the locking assembly 20 is in the first state, at which time the speed of the first ring gear 17 is zero, the second planet carrier 11 and the first planet carrier 15 have the same speed, and the output shaft and the input shaft have the same speed, or the speed corresponding to the transmission ratio, and normal transmission can be performed; the second rotation condition is: the locking assembly 20 is in the second state, at which time the speed of the first planet carrier 15 is zero, and the second planet carrier 11 drives the first ring gear 17 to idle, and at this time the output shaft and the input shaft are in a state of being separated from each other, and the rotation of the input shaft will not affect the rotation of the output shaft.

[0096] It should be noted that in the present application, the same number of teeth of the same type of gears in the second planetary gear set and the first planetary gear set includes: the second ring gear 13 and the first ring gear 17 have the same number of teeth; the second planetary gear 12 and the first planetary gear 16 have the same number of teeth; the second planetary gear set and the first planetary gear set have the same number of teeth of the sun gear 14. The second planetary gear set and the first planetary gear set transmit torque through the same sun gear 14.

[0097] It should be noted that the sun gear 14 of the present application is axially connected to two planet carriers (including the second planet carrier 11 and the first planet carrier 15 ) through bearings, and the sun gear 14 can rotate between the second planet carrier 11 and the first planet carrier 15 .

[0098] The second planet carrier 11 and the first planet carrier 15 are respectively fixedly connected to the corresponding steering shaft (including the input shaft and the output shaft, the second planet carrier 11 is connected to the input shaft, and the first planet carrier 15 is connected to the output shaft), and there are many ways of connection, such as welding, key connection, etc. The steering shaft can be directly machined into a planet carrier or gear shape to achieve an integrated setting, specifically, the second planet carrier 11 and the input shaft can be integrated, and the first planet carrier 15 and the output shaft can be integrated. The specific setting method can be determined according to the different peripheral parts and assembly relationships.

[0099] The planetary gears (including the second planetary gear 12 and the first planetary gear 16) are external gears meshing with the same modulus as the sun gear 14. At least two planetary gears share the transmitted torque equally. The number is determined according to the needs. This application can set 3, but is not limited to 3. The first gear ring 17 can be fixed to the surrounding parts by bolts or the like.

[0100] It should be noted that when the first ring gear 17 is locked, the first ring gear 17 can be prevented from rotating, and the speed of the first ring gear 17 is reduced to zero. At this time, the transmission mode is that the input shaft drives the second planetary carrier 11 to rotate. Since the second ring gear 13 is in a locked state, the second planetary carrier 11 drives the second planetary gear 12 to rotate under the constraint of the second ring gear 13, and the second planetary gear 12 drives the sun gear 14 to rotate. Because the second planetary gear set and the first planetary gear set share the same sun gear 14, the rotation of the sun gear 14 will drive the first planetary gear 16 to rotate. Since the first ring gear 17 is also in a locked state, the first planetary gear 16 drives the first planetary carrier 15 to rotate under the constraint of the first ring gear 17, and the first planetary carrier 15 drives the output shaft to rotate. In the above transmission process, since the number of teeth of similar gears in the second planetary gear set and the first planetary gear set is the same, the transmission ratio of the second planetary carrier 11 and the second planetary gear 12 is the first transmission ratio, and the transmission ratio of the first planetary carrier 15 and the first planetary gear 16 is the second transmission ratio, and the first transmission ratio and the second transmission ratio are the same; the transmission ratio of the second planetary gear 12 and the sun gear 14 is the third transmission ratio, and the transmission ratio of the first planetary gear 16 and the sun gear 14 is the fourth transmission ratio, and the third transmission ratio and the fourth transmission ratio are also the same; after the second ring gear 13 and the first ring gear 17 are locked, the transmission between the second planetary carrier 11 and the first planetary carrier 15 can be offset in pairs, so that the second planetary carrier 11 and the first planetary carrier 15 have the same direction of rotation and the same speed, and at this time, the output shaft and the input shaft will also have the same direction of rotation and the same speed.

[0101] When the first planet carrier 15 is locked, the first planet carrier 15 can be made unable to rotate, and the speed of the first planet carrier 15 is reduced to zero. At this time, the transmission mode is that the input shaft drives the second planet carrier 11 to rotate. Since the second ring gear 13 is in a locked state, the second planet carrier 11 drives the second planetary gear 12 to rotate under the constraint of the second ring gear 13, and the second planetary gear 12 drives the sun gear 14 to rotate. Because the second planetary gear set and the first planetary gear set share the sun gear 14, the rotation of the sun gear 14 will drive the first planetary gear 16 to rotate. Since the first planet carrier 15 is also in a locked state, the first planetary gear 16 drives the first ring gear 17 to rotate under the constraint of the first planet carrier 15. Since the first ring gear 17 is not connected to a further transmission structure, the first ring gear 17 will idle. At this time, the input shaft can be rotated arbitrarily without affecting the output shaft. When the steering device is applied to a vehicle with a game function, the input shaft will be connected to the steering wheel, so that games that require steering wheel cooperation, such as simulated driving, can be played on the vehicle with the cooperation of the steering wheel and certain sensors or 3D glasses.

[0102] It should be noted that the second planet carrier 11 and the input shaft of the present application can be fixedly connected or integrally arranged; similarly, the first planet carrier 15 and the output shaft can be fixedly connected or integrally arranged. The above-mentioned peripheral parts can be a frame or a mounting frame.

[0103] It should be noted that the steering device of the present application is a part of the steering system, which is mainly based on the double-row planetary gear transmission principle, and its core motion relationship is as follows:

[0104]

[0105] Among them, n1 is the rotation speed of the second planet carrier 11 , n7 is the rotation speed of the first planet carrier 15 , Z5 is the number of teeth of the second ring gear 13 , Z4 is the number of teeth of the sun gear 14 , and n5 is the rotation speed of the first ring gear 17 .

[0106] When the locking assembly 20 is in the first state, it can be considered that the steering system is in a coupled state. At this time, the first ring gear 17 is fixed, and the corresponding n5=0. After referring to the above motion relationship, n1=n7, that is, the second planetary carrier 11 and the first planetary carrier 15 have the same rotation speed, and the corresponding input shaft and output shaft have the same rotation speed, realizing normal steering motion transmission.

[0107] When the locking assembly 20 is in the second state, it can be considered that the steering system is in a decoupled state, the first planet carrier 15 is fixed, and the corresponding n7=0, then At this time, the movement of the second planet carrier 11 will be fed back by the first ring gear 17. It can be considered that after the second planet carrier 11 rotates, the first ring gear 17 idles and will no longer transmit the signal to the first planet carrier 15, thereby achieving decoupling of the steering.

[0108] An embodiment of the present application also provides a vehicle, comprising the steering device as described above.

[0109] In the embodiment of the present application, the vehicle with the above-mentioned steering device can switch a variety of steering states, such as the no-load state (the state in which the input shaft is separated from the output shaft) applied to the game car, and the normal driving state. After the second planetary gear set and the first planetary gear set share the sun gear 14, the two planetary gear sets can be linked together, and different transmission effects can be achieved by locking the corresponding gears. In the case where the number of teeth of the same type of gears in the second planetary gear set and the first planetary gear set is the same, and the second ring gear 13 is locked, at least two rotation conditions can be achieved by adjusting the locking assembly 20. The first rotation condition is: the locking assembly 20 is in the first state, the speed of the first ring gear 17 is zero, the second planet carrier 11 and the first planet carrier 15 have the same speed, and the output shaft and the input shaft have the same speed, and normal transmission can be performed; the second rotation condition is: the locking assembly 20 is in the second state, the speed of the first planet carrier 15 is zero, the second planet carrier 11 drives the idling of the first ring gear 17, and the output shaft and the input shaft are in a state of being separated from each other, and the rotation of the input shaft will not affect the rotation of the output shaft. In the embodiment of the present application, the steering device includes two working states: the output shaft and the input shaft rotate synchronously and are disengaged from each other. In the case of disengagement from each other, the input shaft can rotate arbitrarily, which has the beneficial effect.

[0110] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0111] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A steering device, characterized in that: Including a steering assembly and a locking assembly; The steering assembly includes a sun gear, a first planet carrier, a first planet gear and a first ring gear; The sun gear is directly or indirectly connected to the input shaft, and the input shaft drives the sun gear to rotate. The first planet carrier is connected to the output shaft, and the first planet carrier drives the output shaft to rotate, wherein the first planet gear is rotatably arranged on the first planet carrier, and the first planet gear is respectively meshed with the first ring gear and the sun gear; The locking assembly includes a first state for locking the first ring gear and a second state for locking the first planet carrier; The locking assembly is in a first state, the rotation speed of the first ring gear is zero, the first planetary carrier rotates, and the output shaft and the input shaft are normally transmitted; the locking assembly is in a second state, the rotation speed of the first planetary carrier is zero, the first ring gear is in an idling state, and the output shaft and the input shaft are in a state of being disengaged from each other.

2. The steering device according to claim 1, characterized in that: The locking assembly includes a driving member and a locking mechanism, wherein the driving member is connected to the locking mechanism, and the driving member drives the locking mechanism to move; In the first state, the driving member drives the locking mechanism to lock the first gear ring; In the second state, the driving member drives the locking mechanism to lock the first planet carrier.

3. The steering device according to claim 2, characterized in that: The first ring gear is provided with a first locking structure, and the first planet carrier is provided with a second locking structure; or, the first ring gear is provided with a ring gear fixing plate, the ring gear fixing plate is fixedly connected to the first ring gear, the ring gear fixing plate is provided with the first locking structure, the output shaft is fixedly connected to the output shaft fixing plate, the output shaft is fixedly connected to the first planet carrier, and the output shaft fixing plate is provided with the second locking structure; In the first state, the driving member drives the locking mechanism to be engaged with the first locking structure; in the second state, the driving member drives the locking mechanism to be engaged with the second locking structure.

4. The steering device according to claim 3, characterized in that: The locking assembly includes one of a screw nut assembly, a push rod assembly, and a valve assembly.

5. The steering device according to claim 4, characterized in that: The locking assembly is a screw-nut assembly, which includes a housing, a first driving member and a threaded rod, wherein the housing is fixedly connected to the peripheral member, the housing encloses an accommodating cavity, the first driving member is in the accommodating cavity, and the threaded rod is connected to the first driving member; The first driving member is provided with a threaded hole. When the first driving member is in operation, the first driving member drives the threaded hole to rotate, and the threaded rod is threadedly connected to the threaded hole. The housing is provided with a limiting hole adapted to the threaded rod, and the limiting hole drives the threaded rod to be slidably connected to the housing; When the first driving member drives the threaded hole to rotate along the first direction, the threaded rod moves in the direction of the first locking structure and moves to a position to engage with the first locking structure; when the first driving member drives the threaded hole to rotate along the second direction, the threaded rod moves in the direction of the second locking structure and moves to a position to engage with the second locking structure.

6. The steering device according to claim 5, characterized in that: The threaded rod comprises a threaded portion, an anti-rotation portion, a first limiting portion and a second limiting portion, wherein the threaded portion is arranged at the middle portion of the threaded rod, the anti-rotation portion is a section parallel to the axis of the threaded rod and transverse to the threaded portion, and the first limiting portion and the second limiting portion are respectively located at two ends of the threaded portion; The first limiting portion is adapted to the first locking structure, and the second limiting portion is adapted to the second locking structure.

7. The steering device according to claim 4, characterized in that: The locking assembly is a push rod assembly, and the push rod assembly includes a second driving member and a push rod mechanism, the second driving member is connected to the push rod mechanism, the second driving member is fixedly connected to the peripheral member, and the second driving member drives the push rod mechanism to move; The push rod mechanism comprises a push rod structure and a locking member, wherein the push rod structure is connected to the second driving member, and the locking member is connected to the push rod structure; When the second driving member drives the push rod structure to move in a direction away from the second driving member, the push rod structure drives the locking member to move in the direction of the first locking structure, and the locking member moves to a position that engages with the first locking structure; when the second driving member drives the push rod structure to move in a direction close to the second driving member, the push rod structure drives the locking member to move in the direction of the second locking structure, and the locking member moves to a position that engages with the second locking structure.

8. The steering device according to claim 4, characterized in that: The locking assembly is a valve assembly, and the valve assembly includes a valve body and a valve stem, the valve body is fixedly connected to the peripheral member, and the valve stem is movably connected to the valve body; When the valve assembly is provided with one, the valve stem has a first position in which it is clamped to the first locking structure and a second position in which it is clamped to the second locking structure; When two valve assemblies are provided, they include a first valve and a second valve, wherein the first valve is arranged opposite to the first locking structure, and the second valve is arranged opposite to the second locking structure.

9. The steering device according to any one of claims 1 to 8, characterized in that The steering assembly also includes a second planet carrier, a second planetary gear and a second ring gear; The second planet carrier is connected to the input shaft, and the second ring gear is locked, wherein the second planet gear is rotatably arranged on the second planet carrier, and the second planet gear is respectively meshed with the second ring gear and the sun gear.

10. A vehicle, characterized in that: Comprising a steering device as claimed in any one of claims 1 to 9.

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