Steering wheel and car

Abstract

The present application relates to a steering wheel and a car, and belongs to the field of automobile safety and intelligent driving technology. The steering wheel includes a steering wheel body, a fixing ring, a gear selector and an armrest bracket. The gear selector includes a base, a movable component and a control unit. The movable component includes an armrest bracket connecting rod, an electric-controlled hydraulic telescopic mechanism and a preload spring. When the car enters the automatic driving mode, the control unit can control the telescopic head of the electric-controlled hydraulic telescopic mechanism to extend to a first length. When the telescopic head extends to the first length, the armrest bracket is located on the side of the steering wheel skeleton away from the steering wheel axis, and the distance from the armrest bracket to the steering wheel skeleton is equal to the first preset distance. By adopting the present application, the burden of the system used to switch the driving mode in the car can be reduced, and at the same time, possible safety hazards can be reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile safety and intelligent driving technology, and in particular to a steering wheel and a car. Background Art

[0002] With the development of autonomous driving technology, the autonomous driving functions of vehicles are becoming more and more mature. Vehicles operating in autonomous driving mode can free passengers, especially drivers, from some driving-related responsibilities.

[0003] For vehicles with autonomous driving capabilities, in autonomous driving mode, when the driver turns the steering wheel, the vehicle will automatically switch from autonomous driving mode to manual driving mode.

[0004] However, in the automatic driving mode: if the driver's hands hold the steering wheel for a long time, the steering wheel will inevitably turn slightly, causing the vehicle to frequently switch from automatic driving mode to manual driving mode, and the system used to switch driving modes in the vehicle is burdened with a large burden; and if the driver's hands do not hold the steering wheel, in the event of an emergency, the driver may not be able to control the vehicle's direction through the steering wheel in the first place, posing a safety hazard. Summary of the invention

[0005] The embodiments of the present application provide a steering wheel and a car, which can solve the technical problems existing in the related technologies. The technical solutions are as follows:

[0006] In a first aspect, an embodiment of the present application provides a steering wheel, the steering wheel comprising a steering wheel body, a fixing ring, a gear selector and an armrest bracket;

[0007] The steering wheel body comprises a steering wheel shaft and a steering wheel frame, wherein the steering wheel frame has a circular ring structure, a first end of the steering wheel shaft is connected to the automobile steering gear, and a second end of the steering wheel shaft is connected to the steering wheel frame;

[0008] The fixing ring is coaxially mounted on the steering wheel shaft and connected to the steering wheel shaft;

[0009] The gear shifter includes a base, a movable component and a control unit, the base is connected to the fixed ring, the base has a groove structure, the first groove wall of the groove structure has a cylindrical protrusion parallel to the groove opening and the groove bottom, the second groove wall of the groove structure has a first through hole, the third groove wall of the groove structure has a spring fixing seat, the first through hole and the spring fixing seat are both located on the side of the cylindrical protrusion away from the groove bottom of the groove structure, the movable component includes an armrest bracket connecting rod, an electrically controlled hydraulic telescopic mechanism and a preload spring, the first end of the armrest bracket connecting rod is rotatably connected to the cylindrical protrusion, the first end of the armrest bracket connecting rod is located in the groove structure, the second end of the armrest bracket connecting rod is located outside the groove structure, and the extension of the electrically controlled hydraulic telescopic mechanism The retractable head is located in the first through hole, the retractable head is slidably connected to the first through hole and abuts against the armrest bracket connecting rod, one end of the preload spring is connected to the armrest bracket connecting rod, and the other end is connected to the spring fixing seat, the control unit is used to: when receiving a first gear switching signal, adjust the retractable head to extend by a first length, and when receiving a second gear switching signal, adjust the retractable head to extend by a second length, wherein the first groove wall is adjacent to the second groove wall, and the third groove wall is opposite to the second groove wall, the first gear switching signal is a signal sent by the main controller of the car to the control unit when the car enters the automatic driving mode, and the second gear switching signal is a signal sent by the main controller of the car to the control unit when the car enters the manual driving mode;

[0010] The handrail bracket is connected to the second end of the handrail bracket connecting rod;

[0011] When the telescopic head is extended to a first length, the preload spring is in a compressed state, the armrest bracket connecting rod is in a first gear position, the armrest bracket is located on a side of the steering wheel skeleton away from the steering wheel shaft, and the distance from the armrest bracket to the steering wheel skeleton is equal to a first preset distance; when the telescopic head is extended to a second length, the preload spring is in an extended state, the armrest bracket connecting rod is in a second gear position, and the armrest bracket is located on a side of the steering wheel skeleton close to the steering wheel shaft, wherein the first length is greater than the second length.

[0012] In a possible implementation, the armrest bracket has an arc structure, and an outer arc wall of the armrest bracket is connected to the second end of the armrest bracket connecting rod.

[0013] In a possible implementation, the steering wheel further includes a first pressure sensor and a second pressure sensor, the first pressure sensor and the second pressure sensor are both electrically connected to the automobile main controller, the first pressure sensor is located on a first side wall of the armrest bracket and connected to the first side wall, the second pressure sensor is located on a second side wall of the armrest bracket and connected to the second side wall, wherein the first side wall is a side wall of the armrest bracket close to the steering wheel axis, and the second side wall is a side wall of the armrest bracket away from the steering wheel axis;

[0014] The control unit is used to: when receiving a third gear switching signal, adjust the telescopic head to extend to the first length; when receiving a fourth gear switching signal, adjust the telescopic head to extend to the second length. The third gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the first pressure sensor reaches a first preset pressure value. The fourth gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the second pressure sensor reaches the first preset pressure value.

[0015] In a possible implementation, the first side wall and the inner arc wall of the handrail support are smoothly transitioned, and the second side wall and the inner arc wall of the handrail support are smoothly transitioned.

[0016] In a possible implementation, a central angle of a projection of the outer arc wall on the plane where the first side wall is located is 120°.

[0017] In a possible implementation, the steering wheel skeleton includes a gripping ring and a plurality of connecting rods, the gripping ring is coaxial with the steering wheel shaft, one end of each connecting rod is connected to the steering wheel shaft, and the other end is connected to the gripping ring, the steering wheel also includes a third pressure sensor and a plurality of fourth pressure sensors, the third pressure sensor and the fourth pressure sensor both have an arc structure and are electrically connected to the automobile main controller, the third pressure sensor is located on the inner arc wall of the armrest bracket and is connected to the inner arc wall of the armrest bracket, and the plurality of fourth pressure sensors are evenly distributed on the gripping ring and are connected to the steering wheel skeleton;

[0018] The control unit is used for: when the telescopic head is extended by the first length, when receiving a fifth gear switching signal, adjusting the telescopic head to extend by the second length, wherein the fifth gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the third pressure sensor is zero and the pressure acting on the fourth pressure sensor reaches a second preset pressure value.

[0019] In a possible implementation manner, the fixing ring and the steering wheel shaft are connected by pin-key cooperation.

[0020] In a possible implementation manner, the base and the fixing ring are connected by welding.

[0021] In a possible implementation manner, the spring fixing seat is located on the axis of the first through hole.

[0022] In a second aspect, an embodiment of the present application provides a car, comprising the steering wheel described in the first aspect and possible implementations thereof.

[0023] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects:

[0024] The embodiment of the present application provides a steering wheel, which includes a steering wheel body, a fixing ring, a gear selector and an armrest bracket, the gear selector includes a base, a movable component and a control unit, and the movable component includes an armrest bracket connecting rod, an electric-controlled hydraulic telescopic mechanism and a preload spring. When the car enters the automatic driving mode, the control unit can control the telescopic head of the electric-controlled hydraulic telescopic mechanism to extend to a first length. When the telescopic head extends to the first length, the armrest bracket is located on the side of the steering wheel skeleton away from the steering wheel axis, and the distance from the armrest bracket to the steering wheel skeleton is equal to the first preset distance. In this way, in the automatic driving mode, the driver can place his wrist on the armrest bracket, and does not need to grasp the steering wheel, so the steering wheel will not turn due to grasping, thereby avoiding the vehicle from switching from the automatic driving mode to the manual driving mode due to frequent steering wheel rotation, reducing the burden of the system for switching driving modes in the car. At the same time, in the automatic driving mode, since the distance from the armrest bracket to the steering wheel frame is equal to the first preset distance, and the first preset distance is set to a smaller distance, when the driver's wrist is placed on the armrest bracket, the distance between the driver's hand and the steering wheel is smaller. If an emergency occurs, the driver can grasp and control the steering wheel in the first time, reducing possible safety hazards.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1is a structural schematic diagram of a steering wheel shown in an embodiment of the present application;

[0028] Figure 2 is a structural schematic diagram of a steering wheel shown in an embodiment of the present application;

[0029] Figure 3 is a structural schematic diagram of a steering wheel shown in an embodiment of the present application;

[0030] Figure 4 is a cross-sectional view of a base shown in an embodiment of the present application;

[0031] Figure 5 is a structural schematic diagram of a handrail bracket shown in an embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of the structure of a steering wheel shown in an embodiment of the present application.

[0033] Legend

[0034] 1. Steering wheel body;

[0035] 11. Steering wheel shaft; 12. Steering wheel frame; 121. Grip ring; 122. Connecting rod;

[0036] 11a, a first end of the steering wheel shaft; 11b, a second end of the steering wheel shaft;

[0037] 2. Fixed ring;

[0038] 3. Shifter;

[0039] 31. base; 32. movable component;

[0040] 31m, first groove wall; 31n, second groove wall; 31o, third groove wall; 31a, fourth groove wall;

[0041] 31p, cylindrical protrusion; 31q, first through hole; 31r, spring fixing seat;

[0042] 321. Handrail bracket connecting rod; 322. Electric-controlled hydraulic telescopic mechanism; 323. Preload spring;

[0043] 321a, a first end of the armrest support connecting rod; 321b, a second end of the armrest support connecting rod;

[0044] 322a, telescopic head; 322b, telescopic mechanism cylinder;

[0045] 4. Handrail bracket;

[0046] 4a, outer arc wall of the handrail support; 4b, first side wall of the handrail support; 4c, second side wall of the handrail support; 4d, inner arc wall of the handrail support;

[0047] 5. A first pressure sensor; 6. A second pressure sensor;

[0048] 7. A third pressure sensor; 8. A fourth pressure sensor. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0050] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] The present application embodiment provides a steering wheel, such as Figure 1 As shown, the steering wheel includes a steering wheel body 1, a fixing ring 2, a gear selector 3 and an armrest bracket 4. The steering wheel body 1 includes a steering wheel shaft 11 and a steering wheel frame 12. The gear selector 3 includes a base 31, a movable component 32 and a control unit. The movable component 32 includes an armrest bracket connecting rod 321, an electric-controlled hydraulic telescopic mechanism 322 and a preload spring 323. The steering wheel is applied to a car with an automatic driving mode.

[0052] Below, the various parts of the steering wheel are introduced separately:

[0053] 1. Steering wheel body 1

[0054] The steering wheel body 1 is a part of the automobile steering control system and is also a component in the steering wheel used to control the driving direction of the automobile.

[0055] like Figure 1As shown, the steering wheel body 1 comprises a steering wheel shaft 11 and a steering wheel frame 12, and the steering wheel shaft 11 and the steering wheel frame 12 are coaxially arranged. The steering wheel shaft 11 has a cylindrical structure, and the steering wheel frame 12 has a circular ring structure. The first end 11a of the steering wheel shaft 11 is connected to the automobile steering gear, and the second end 11b of the steering wheel shaft 11 is connected to the steering wheel frame 12.

[0056] The steering wheel skeleton 12 includes a grip ring 121 and a plurality of connecting rods 122, such as Figure 6 As shown, the gripping ring 121 is coaxial with the steering wheel shaft 11 , one end of each connecting rod 122 is connected to the steering wheel shaft 11 , and the other end is connected to the gripping ring 121 , and the angles between two adjacent connecting rods 122 are the same.

[0057] Exemplarily, the steering wheel skeleton 12 includes a grip ring 121 and three connecting rods 122 , and the angle between two adjacent connecting rods 122 is 120°.

[0058] 2. Fixed ring 2

[0059] The fixing ring 2 is a component in the steering wheel for fixing and connecting the gear selector 3 .

[0060] like Figure 3 As shown, the fixing ring 2 has a circular ring structure, and the fixing ring 2 is coaxially placed with the steering wheel shaft 11 and connected to the steering wheel shaft 11 .

[0061] Optionally, the outer wall of the steering wheel shaft 11 may have a first keyway, the inner wall of the fixing ring 2 may have a second keyway, the first keyway and the second keyway have the same size, and the fixing ring 2 and the steering wheel shaft 11 may be connected by pin-key cooperation.

[0062] 3. Shifter 3

[0063] The shifter 3 is a component in the steering wheel for adjusting the position of the armrest 4 based on the shift position switching signal.

[0064] like Figure 1 As shown, the gear selector 3 includes a base 31 , a movable assembly 32 and a control unit.

[0065] Base 31

[0066] The base 31 is a component of the gear selector 3 that is fixedly connected to the fixing ring 2 .

[0067] like Figure 4 ( Figure 4 For base 31 Figure 3As shown in the cross-sectional view along the AA direction, the base 31 has a groove structure, the groove structure is in the shape of a step, the base 31 has a first groove wall 31m, a second groove wall 31n, a third groove wall 31o and a fourth groove wall 31a (the fourth groove wall 31a is not shown in the figure), the first groove wall 31m of the groove structure has a cylindrical protrusion 31p parallel to the groove opening and the groove bottom, the second groove wall 31n of the groove structure has a first through hole 31q, the third groove wall 31o of the groove structure has a spring fixing seat 31r, and the first through hole 31q and the spring fixing seat 31r are both located on the side of the cylindrical protrusion 31p away from the groove bottom of the groove structure.

[0068] The first groove wall 31m is adjacent to the second groove wall 31n, the third groove wall 31o is opposite to the second groove wall 31n, and the fourth groove wall 31a is opposite to the first groove wall 31m.

[0069] Optionally, one end of the first through hole 31q may be connected to the first groove wall 31m, and the other end of the first through hole 31q may be connected to the fourth groove wall 31a.

[0070] In this way, the strength of the base 31 can be improved.

[0071] The first through hole 31q can have various shapes, such as circular or positive direction, etc. The embodiment of the present application does not impose any limitation on the shape of the first through hole 31q, and technicians can set the shape of the first through hole 31q according to actual needs.

[0072] Optionally, the spring fixing seat 31r may be located on the axis of the first through hole 31q.

[0073] In this way, the difficulty of processing the base 31 can be reduced.

[0074] The connection method between the base 31 and the fixing ring 2 may be welding or bonding. The embodiment of the present application does not impose any limitation on the connection method between the base 31 and the fixing ring 2.

[0075] Active Components 32

[0076] The movable assembly 32 is a component in the gear selector 3 for adjusting the position of the armrest 4 .

[0077] like Figure 1 As shown, the movable assembly 32 includes an armrest support connecting rod 321 , an electrically controlled hydraulic telescopic mechanism 322 and a preload spring 323 .

[0078] The armrest support connecting rod 321 has an arc structure, the armrest support connecting rod 321 is bent toward the position of the steering wheel frame 12, the first end 321a of the armrest support connecting rod 321 is rotatably connected to the cylindrical protrusion 31p, and the second end 321b of the armrest support connecting rod 321 is connected to the armrest support 4. The first end 321a of the armrest support connecting rod 321 is located in the groove structure, and the second end 321b of the armrest support connecting rod 321 is located outside the groove structure. When the armrest bracket connecting rod 321 rotates to a position abutting against the second groove wall 31n, the second end 321b of the armrest bracket connecting rod 321 is located on the side of the steering wheel skeleton 12 away from the steering wheel shaft 11; when the armrest bracket connecting rod 321 rotates to a position abutting against the third groove wall 31o, the second end 321b of the armrest bracket connecting rod 321 is located on the side of the steering wheel skeleton 12 away from the steering wheel shaft 11, and the distance from the second end 321b of the armrest bracket connecting rod 321 to the steering wheel skeleton 12 is equal to the first preset distance.

[0079] In this way, by rotating the armrest bracket connecting rod 321 and the cylindrical protrusion 31p, the position of the second end 321b of the armrest bracket connecting rod 321 can be adjusted by rotating the armrest bracket connecting rod 321.

[0080] Optionally, the first preset distance may be within a first preset range, and the value of the first preset range may be 8 cm to 12 cm.

[0081] Exemplarily, the first preset distance may be 10 cm (centimeter).

[0082] In this way, it can be ensured that when the armrest bracket connecting rod 321 rotates to the position abutting against the third groove wall 31o, the distance between the second end 321b of the armrest bracket connecting rod 321 and the steering wheel skeleton 12 is small.

[0083] like Figure 1 As shown, the electric-controlled hydraulic telescopic mechanism 322 includes a telescopic head 322a and a telescopic mechanism cylinder 322b. The telescopic mechanism cylinder 322b is connected to the hydraulic oil tank of the electric-controlled hydraulic telescopic mechanism 322 through a pipeline, and a pressurized oil pump is provided in the hydraulic oil tank. An electric-controlled valve is provided on the pipeline connecting the telescopic mechanism cylinder 322b and the hydraulic oil tank of the electric-controlled hydraulic telescopic mechanism 322, and both the electric-controlled valve and the pressurized oil pump are electrically connected to the control unit.

[0084] The telescopic head 322a of the electric-controlled hydraulic telescopic mechanism 322 is located in the first through hole 31q, and is slidably connected to the first through hole 31q, and is against the armrest bracket connecting rod 321. One end of the preload spring 323 is connected to the armrest bracket connecting rod 321, and the other end is connected to the spring fixing seat 31r. In the initial state, the preload spring 323 is in an extended state, and the armrest bracket connecting rod 321 is against the second groove wall 31n.

[0085] When high-pressure hydraulic oil enters the telescopic mechanism cylinder 322b of the electric-controlled hydraulic telescopic mechanism 322, the high-pressure hydraulic oil pushes the telescopic head 322a to extend to the first length, the preload spring 323 is in a compressed state, and the armrest bracket connecting rod 321 abuts against the third groove wall 31o. When there is no high-pressure hydraulic oil in the telescopic mechanism cylinder 322b of the electric-controlled hydraulic telescopic mechanism 322, the high-pressure hydraulic oil pushes the telescopic head 322a to extend to the second length, the preload spring 323 is in an extended state, and the armrest bracket connecting rod 321 abuts against the second groove wall 31n.

[0086] The first length is greater than the second length.

[0087] In this way, the telescopic head 322a can be pushed to extend the first length or the second length by controlling the high-pressure hydraulic oil to flow in and out of the telescopic mechanism cylinder 322b, thereby controlling the armrest bracket connecting rod 321 to rotate in the base 31, and then adjusting the position of the second end 321b of the armrest bracket connecting rod 321.

[0088] Control unit

[0089] The control unit is a component in the gear shifter used to adjust the extension length of the telescopic head 322a of the electric-controlled hydraulic telescopic mechanism 322 based on the gear switching signal sent by the main controller of the automobile. The control unit is electrically connected to the main controller of the automobile.

[0090] The control unit is used to: when receiving a first gear switching signal, adjust the telescopic head 322a to extend to a first length; when receiving a second gear switching signal, adjust the telescopic head 322a to extend to a second length.

[0091] Among them, the first gear switching signal is the signal sent by the vehicle main controller to the control unit when the vehicle enters the automatic driving mode, and the second gear switching signal is the signal sent by the vehicle main controller to the control unit when the vehicle enters the manual driving mode.

[0092] In implementation, when the main controller of the automobile receives an automatic driving instruction, the main controller of the automobile controls the automobile to enter the automatic driving mode and sends a first gear switching signal to the control unit. When the control unit receives the first gear switching signal, it controls the pressurized oil pump to start working and controls the electronic control valve to open. At this time, the pressure in the hydraulic oil tank of the electronically controlled hydraulic telescopic mechanism 322 gradually rises, and the hydraulic oil is pressed into the cylinder 322b of the telescopic mechanism, pushing the telescopic head 322a to extend to the first length. When the pressure in the hydraulic oil tank reaches the first value, the control unit controls the electronic control valve to close, and the telescopic head 322a remains in the state of extending to the first length without change. When the main controller of the automobile receives a manual driving instruction, the main controller of the automobile controls the automobile to enter the manual driving mode and sends a second gear switching signal to the control unit. When the control unit receives the second gear switching signal, it controls the pressurized oil pump to stop working, so that the pressure in the hydraulic oil tank of the electronically controlled hydraulic telescopic mechanism 322 gradually decreases. When the pressure in the hydraulic oil tank drops to the second value, the electronic control valve is controlled to open. At this time, the hydraulic oil in the telescopic mechanism cylinder 322b flows back into the hydraulic oil tank of the electronically controlled hydraulic telescopic mechanism 322, so that the telescopic head 322a is restored to the second extended length.

[0093] The first value is greater than the second value, the first value is a pressure value that can make the telescopic head 322a extend to a first length, and the second value is less than the preload force of the warning spring 323 .

[0094] In this way, the control unit can make the armrest bracket connecting rod 321 be in the first gear position when the car is in the automatic driving mode, that is, the second end 321b of the armrest bracket connecting rod 321 is located on the side of the steering wheel frame 12 away from the steering wheel shaft 11, and the distance from the second end 321b of the armrest bracket connecting rod 321 to the steering wheel frame 12 is equal to the first preset distance. In addition, the control unit can make the armrest bracket connecting rod 321 be in the second gear position when the car is in the manual driving mode, that is, the armrest bracket connecting rod 321 is in the second gear position, and the second end 321b of the armrest bracket connecting rod 321 is located on the side of the steering wheel frame 12 close to the steering wheel shaft 11.

[0095] 4. Handrail bracket 4

[0096] The armrest support 4 is a component of the steering wheel for supporting the driver's wrists in the automatic driving mode.

[0097] When the car is in automatic driving mode, the armrest bracket 4 is located on the side of the steering wheel frame 12 away from the steering wheel shaft 11 . When the car is in manual driving mode, the armrest bracket 4 is located on the side of the steering wheel frame 12 close to the steering wheel shaft 11 .

[0098] like Figure 3 As shown, the armrest bracket 4 is connected to the armrest bracket connecting rod 321.

[0099] Optionally, the armrest bracket 4 may have a circular ring structure.

[0100] Exemplarily, the inner diameter of the handrail support 4 may be 15 cm.

[0101] In this way, the driver can pass his hands through the armrest bracket 4 and place his wrists on the armrest bracket 4, thereby improving comfort.

[0102] Alternatively, if Figure 6 As shown, the armrest bracket 4 may have an arc-shaped structure.

[0103] In this way, when an emergency situation occurs (for example, the steering wheel frame 12 needs to be turned to make a turn), the hand can be quickly removed from the armrest bracket 4 and the steering wheel frame 12 can be grasped.

[0104] Exemplarily, the central angle of the projection of the outer arc wall 4a of the handrail support 4 on the plane where the first side wall 4b is located can be 120°.

[0105] Alternatively, if Figure 6 As shown, the outer arc wall 4a of the handrail support 4 is connected to the second end 321b of the handrail support connecting rod 321.

[0106] In this way, Figure 1 As shown, when the armrest support connecting rod 321 is in the first gear position, the armrest support 4 can be located on the side of the steering wheel frame 12 away from the steering wheel shaft 11, and the distance from the second end 321b of the armrest support connecting rod 321 to the steering wheel frame 12 is equal to the first preset distance. Figure 2 As shown, when the armrest bracket connecting rod 321 is located at the second gear position, the armrest bracket 4 can be located at a side of the steering wheel skeleton 12 close to the steering wheel shaft 11 .

[0107] Optionally, the first side wall 4 b of the armrest bracket 4 can smoothly transition to the inner arc wall 4 of the armrest bracket 4 , and the second side wall 4 c of the armrest bracket 4 can smoothly transition to the inner arc wall 4 of the armrest bracket 4 .

[0108] In this way, the comfort level of the driver when placing his / her wrist on the armrest bracket 4 can be improved.

[0109] The following are some optional structural features of the steering wheel:

[0110] Structural feature 1. The side wall of the handrail bracket 4 can have a pressure sensor.

[0111] The steering wheel may further include a first pressure sensor 5 and a second pressure sensor 6, and the first pressure sensor 5 and the second pressure sensor 6 are both electrically connected to the main controller of the automobile.

[0112] like Figure 5As shown, the first pressure sensor 5 is located on the first side wall 4b of the armrest bracket 4 and connected to the first side wall 4b, and the second pressure sensor 6 is located on the second side wall 4c of the armrest bracket 4 and connected to the second side wall 4c.

[0113] The first side wall 4b is the side wall of the armrest bracket 4 close to the steering wheel shaft 11, and the second side wall 4c is the side wall of the armrest bracket 4 away from the steering wheel shaft 11. The first pressure sensor 5 is used to detect the value of the force acting on the first side wall 4b of the armrest bracket 4, and the second pressure sensor 6 is used to detect the value of the force acting on the first side wall 4c of the armrest bracket 4.

[0114] When the third gear switching signal is received, the pressure oil pump is controlled to start working, and the electric control valve is controlled to open. At this time, the pressure in the hydraulic oil tank of the electric hydraulic telescopic mechanism 322 gradually rises, and the hydraulic oil is pressed into the telescopic mechanism cylinder 322b, pushing the telescopic head 322a to extend to the first length. When the pressure in the hydraulic oil tank reaches the first value, the control unit controls the electric control valve to close, and the telescopic head 322a remains in the state of extending to the first length without change. When the fourth gear switching signal is received, the control unit controls the pressure oil pump to stop working, so that the pressure in the hydraulic oil tank of the electric hydraulic telescopic mechanism 322 gradually decreases. When the pressure in the hydraulic oil tank drops to the second value, the electric control valve is controlled to open. At this time, the hydraulic oil in the telescopic mechanism cylinder 322b flows back to the hydraulic oil tank of the electric hydraulic telescopic mechanism 322, so that the telescopic head 322a is restored to the second length.

[0115] Among them, the third gear switching signal is the signal sent by the vehicle main controller to the control unit when the pressure acting on the first pressure sensor 5 reaches the first preset pressure value, and the fourth gear switching signal is the signal sent by the vehicle main controller to the control unit when the pressure acting on the second pressure sensor 6 reaches the first preset pressure value.

[0116] Optionally, the first preset pressure value may be 20N.

[0117] In this way, the driver can push the first side wall 4b of the armrest bracket 4 to indicate that he wants to enter the manual driving mode, and can push the second side wall 4c of the armrest bracket 4 to indicate that he wants to enter the manual driving mode.

[0118] Structural feature 2: The inner arc wall 4 of the handrail bracket 4 and the gripping ring 121 may have pressure sensors.

[0119] The steering wheel may further include a third pressure sensor 7 and a plurality of second pressure sensors 8. The third pressure sensor 7 and the plurality of fourth pressure sensors 8 are both electrically connected to the main controller of the automobile.

[0120] like Figure 6As shown, they all have an arc-shaped structure, the third pressure sensor 7 is located on the inner arc wall 4 of the armrest bracket 4 and is connected to the inner arc wall 4 of the armrest bracket 4, and multiple fourth pressure sensors 8 are evenly distributed on the gripping circle 121 and are connected to the steering wheel skeleton 12.

[0121] Among them, the third pressure sensor 7 is used to detect the value of the force acting on the inner arc wall 4 of the handrail bracket 4, and the plurality of fourth pressure sensors 8 are used to detect the value of the force acting on the gripping ring 121.

[0122] When the armrest support connecting rod 321 is in the first gear position, that is, the telescopic head 322a is extended to the first length, there is high-pressure hydraulic oil in the telescopic mechanism cylinder 322b. When the fifth gear switching signal is received, the control unit controls the pressurized oil pump to stop working, so that the pressure in the hydraulic oil tank of the electric-controlled hydraulic telescopic mechanism 322 gradually decreases. When the pressure in the hydraulic oil tank drops to the second value, the control unit controls the electric control valve to open. At this time, the hydraulic oil in the telescopic mechanism cylinder 322b flows back to the hydraulic oil tank of the electric-controlled hydraulic telescopic mechanism 322, so that the telescopic head 322a is restored to the second extension length.

[0123] The fifth gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the third pressure sensor 7 is zero and the pressure acting on the fourth pressure sensor 8 reaches a second preset pressure value.

[0124] Optionally, the fifth gear may be a signal sent by the vehicle main controller to the control unit when the pressure acting on the third pressure sensor 7 is zero and the pressure acting on any one of the fourth pressure sensors 8 reaches a second preset pressure value.

[0125] Exemplarily, when in the fifth gear the pressure acting on the third pressure sensor 7 is zero and the pressure acting on any one of the fourth pressure sensors 8 reaches the second preset pressure value, and the vehicle main controller sends a signal to the control unit, the second preset pressure value may be 10N.

[0126] Optionally, the fifth gear may be a signal sent by the vehicle main controller to the control unit when the pressure acting on the third pressure sensor 7 is zero and the sum of the pressures acting on all the fourth pressure sensors 8 reaches a second preset pressure value.

[0127] Exemplarily, when in the fifth gear the pressure acting on the third pressure sensor 7 is zero and the sum of the pressures acting on all the fourth pressure sensors 8 reaches the second preset pressure value, and the vehicle main controller sends a signal to the control unit, the second preset pressure value may be 30N.

[0128] Like this, when automobile is in automatic driving mode, the driver's wrist is placed on the armrest support 4. The driver can indicate that he wishes to enter the manual driving mode by leaving his wrist on the armrest support 4 and grasping the gripping ring 121.

[0129] The embodiment of the present application provides a steering wheel, which includes a steering wheel body 1, a fixing ring 2, a gear selector 3 and an armrest bracket 4. The gear selector 3 includes a base 31, a movable component 32 and a control unit. The movable component 32 includes an armrest bracket connecting rod 321, an electric-controlled hydraulic telescopic mechanism 322 and a preload spring 323. When the car enters the automatic driving mode, the controller can control the telescopic head 322a of the electric-controlled hydraulic telescopic mechanism 322 to extend to a first length. When the telescopic head 322a extends to the first length, the armrest bracket 4 is located on the side of the steering wheel skeleton 12 away from the steering wheel shaft 11, and the distance between the armrest bracket 4 and the steering wheel skeleton 12 is equal to the first preset distance. In this way, in the automatic driving mode, the driver can place his wrist on the armrest bracket without grasping the steering wheel, and the steering wheel will not be turned due to grasping, so that the vehicle can be prevented from switching from the automatic driving mode to the manual driving mode due to frequent steering wheel rotation, thereby reducing the burden of the system for switching driving modes in the vehicle. At the same time, in the automatic driving mode, since the distance from the armrest bracket to the steering wheel frame is equal to the first preset distance, and the first preset distance is set to a smaller distance, when the driver's wrist is placed on the armrest bracket, the distance between the driver's hand and the steering wheel is smaller. If an emergency occurs, the driver can grasp and control the steering wheel in the first time, reducing possible safety hazards.

[0130] The embodiment of the present application further provides a car, which includes the above-mentioned steering wheel and a car main controller, the car main controller is electrically connected to the control unit of the above-mentioned steering wheel, the first pressure sensor 5, the second pressure sensor 6, the third pressure sensor 7 and a plurality of fourth pressure sensors 8, and the car main controller is used for:

[0131] When the car enters the automatic driving mode, a first gear switching signal is sent to the control unit; when the car enters the manual driving mode, a second gear switching signal is sent to the control unit; when the pressure acting on the first pressure sensor 5 reaches the first preset pressure value, a third gear switching signal is sent to the control unit; when the pressure acting on the second pressure sensor 6 reaches the first preset pressure value, a fourth gear switching signal is sent to the control unit; when the car is in the automatic driving mode, when the pressure acting on the third pressure sensor 7 is zero and the pressure acting on the fourth pressure sensor 8 reaches the second preset pressure value, a fifth gear switching signal is sent to the control unit.

[0132] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A steering wheel, characterized in that: The steering wheel comprises a steering wheel body (1), a fixing ring (2), a gear selector (3) and an armrest bracket (4); The steering wheel body (1) comprises a steering wheel shaft (11) and a steering wheel frame (12); the steering wheel frame (12) has a circular ring structure; the first end (11a) of the steering wheel shaft (11) is connected to the steering gear of the automobile; and the second end (11b) of the steering wheel shaft (11) is connected to the steering wheel frame (12); The fixing ring (2) is coaxially mounted on the steering wheel shaft (11) and is connected to the steering wheel shaft (11); The gear shifter (3) comprises a base (31), a movable component (32) and a control unit. The base (31) is connected to the fixing ring (2). The base (31) has a groove structure. The first groove wall (31m) of the groove structure has a cylindrical protrusion (31p) parallel to the groove opening and the groove bottom. The second groove wall (31n) of the groove structure has a first through hole (31q). The third groove wall (31o) of the groove structure has a spring fixing seat (31r). The first through hole (31q) and the spring fixing seat (31 r) are both located on a side of the cylindrical protrusion (31p) away from the groove bottom of the groove structure, the movable component (32) comprises an armrest support connecting rod (321), an electrically controlled hydraulic telescopic mechanism (322) and a preload spring (323), the first end (321a) of the armrest support connecting rod (321) is rotatably connected to the cylindrical protrusion (31p), the first end (321a) of the armrest support connecting rod (321) is located in the groove structure, and the second end (321b) of the armrest support connecting rod (321) is located Outside the groove structure, the telescopic head (322a) of the electrically controlled hydraulic telescopic mechanism (322) is located in the first through hole (31q), the telescopic head (322a) is slidably connected to the first through hole (31q), and is against the handrail bracket connecting rod (321), one end of the preload spring (323) is connected to the handrail bracket connecting rod (321), and the other end is connected to the spring fixing seat (31r), and the control unit is used to: when receiving the first gear switching signal, adjust the telescopic head (322a) ) extends to a first length, and when receiving a second gear switching signal, adjusts the telescopic head (322a) to extend to a second length, wherein the first groove wall (31m) is adjacent to the second groove wall (31n), and the third groove wall (31o) is opposite to the second groove wall (31n), the first gear switching signal is a signal sent by the main controller of the automobile to the control unit when the automobile enters the automatic driving mode, and the second gear switching signal is a signal sent by the main controller of the automobile to the control unit when the automobile enters the manual driving mode; The handrail support (4) is connected to the second end (321b) of the handrail support connecting rod (321); When the telescopic head (322a) is extended to a first length, the preload spring (323) is in a compressed state, the armrest bracket connecting rod (321) is in a first gear position, the armrest bracket (4) is located on a side of the steering wheel frame (12) away from the steering wheel shaft (11), and the distance between the armrest bracket (4) and the steering wheel frame (12) is equal to a first preset distance; when the telescopic head (322a) is extended to a second length, the preload spring (323) is in an extended state, the armrest bracket connecting rod (321) is in a second gear position, and the armrest bracket (4) is located on a side of the steering wheel frame (12) close to the steering wheel shaft (11), wherein the first length is greater than the second length.

2. The steering wheel according to claim 1, characterized in that: The handrail support (4) has an arc structure, and an outer arc wall (4a) of the handrail support (4) is connected to the second end (321b) of the handrail support connecting rod (321).

3. The steering wheel according to claim 2, characterized in that: The steering wheel further comprises a first pressure sensor (5) and a second pressure sensor (6), the first pressure sensor (5) and the second pressure sensor (6) are both electrically connected to the automobile main controller, the first pressure sensor (5) is located on a first side wall (4b) of the armrest bracket (4) and is connected to the first side wall (4b), the second pressure sensor (6) is located on a second side wall (4c) of the armrest bracket (4) and is connected to the second side wall (4c), wherein the first side wall (4b) is a side wall of the armrest bracket (4) close to the steering wheel shaft (11), and the second side wall (4c) is a side wall of the armrest bracket (4) away from the steering wheel shaft (11); The control unit is used to: when receiving a third gear switching signal, adjust the telescopic head (322a) to extend to the first length; when receiving a fourth gear switching signal, adjust the telescopic head (322a) to extend to the second length; the third gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the first pressure sensor (5) reaches a first preset pressure value; the fourth gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the second pressure sensor (6) reaches the first preset pressure value.

4. The steering wheel according to claim 3, characterized in that: The first side wall (4b) and the inner arc wall (4d) of the handrail support (4) are in smooth transition, and the second side wall (4c) and the inner arc wall (4d) of the handrail support (4) are in smooth transition.

5. The steering wheel according to claim 3, characterized in that: The central angle of the projection of the outer arc wall (4a) on the plane where the first side wall (4b) is located is 120°.

6. The steering wheel according to claim 2, characterized in that: The steering wheel skeleton (12) comprises a gripping ring (121) and a plurality of connecting rods (122), the gripping ring (121) being coaxial with the steering wheel shaft (11), one end of each connecting rod (122) being connected to the steering wheel shaft (11), and the other end being connected to the gripping ring (121), the steering wheel further comprising a third pressure sensor (7) and a plurality of fourth pressure sensors (8), the third pressure sensor (7) and the fourth pressure sensor (8) both having an arc structure and being electrically connected to the main controller of the automobile, the third pressure sensor (7) being located on the inner arc wall (4d) of the armrest bracket (4) and being connected to the inner arc wall (4d) of the armrest bracket (4), the plurality of fourth pressure sensors (8) being evenly distributed on the gripping ring (121) and being connected to the steering wheel skeleton (12); The control unit is used for, when the telescopic head (322a) is extended to the first length, adjusting the telescopic head (322a) to extend to the second length upon receiving a fifth gear switching signal, wherein the fifth gear switching signal is a signal sent by the vehicle main controller to the control unit when the pressure acting on the third pressure sensor (7) is zero and the pressure acting on the fourth pressure sensor (8) reaches a second preset pressure value.

7. The steering wheel according to claim 1, characterized in that: The fixing ring (2) and the steering wheel shaft (11) are connected by means of a pin key.

8. The steering wheel according to claim 1, characterized in that: The connection between the base (31) and the fixing ring (2) is by welding.

9. The steering wheel according to claim 1, characterized in that: The spring fixing seat (31r) is located on the axis of the first through hole (31q).

10. An automobile, characterized in that: The automobile comprises a steering wheel as claimed in any one of claims 1 to 9.

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