Steering wheel with turning angle detection function

Abstract

The invention relates to the field of steering wheels, and discloses a steering wheel with a corner detection function, which comprises a steering wheel body, the lower end of the steering wheel body is fixedly connected with a connecting column, the lower end of the steering wheel body is fixedly connected with a steering shaft, and the upper end of the steering shaft is fixedly connected with a first gear; one end of the first gear is meshed with a second gear and a third gear, one side of the second gear is meshed with a first rack, one side of the third gear is meshed with a second rack, the second gear and the third gear are identical in diameter value and different in tooth number, and the diameter value of the first gear is larger than that of the second gear and that of the third gear. Compared with the prior art, the steering angle detection accuracy of the steering wheel body is improved, meanwhile, the angle sensor does not make direct contact with the steering wheel body and the steering shaft, use consumption of the angle sensor is reduced, and the service life of the angle sensor is prolonged.

Description

Technical Field

[0001] The invention relates to the field of steering wheels, in particular to a steering wheel with a turning angle detection function. Background Art

[0002] The steering wheel is generally connected to the steering shaft through a spline. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque and then transmit it to the steering shaft. When using a steering wheel with a larger diameter for steering, the driver can apply less hand force to the steering wheel.

[0003] In the prior art, a Chinese patent document with publication number CN203957891U proposes a steering wheel for angle measurement, which solves the problems of expensive steering wheel angle sensors and low service life and reliability. However, in actual applications, the use of a non-contact steering wheel angle sensor may result in inaccurate steering wheel angle measurement data. At the same time, the steering wheel angle sensor directly measures the steering wheel rotation angle, which may result in large wear and tear on the steering wheel angle sensor and shorten the service life of the steering wheel angle sensor. Therefore, we disclose a steering wheel with an angle detection function to meet the demand for improving the accuracy of steering wheel angle detection. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a steering wheel with an angle detection function, which has the advantages of improving the accuracy of steering wheel angle detection and solving the problem of low steering wheel angle detection accuracy.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A steering wheel with a turning angle detection function, comprising a steering wheel body, a connecting column fixedly connected to the lower end of the steering wheel body, a steering shaft fixedly connected to the upper end of the steering shaft, a second gear meshed with a third gear at one end of the first gear, a first rack meshed with one side of the second gear, a second rack meshed with one side of the third gear, the second gear and the third gear have the same diameter value and a difference of one tooth number, the diameter value of the first gear is greater than the diameter value of the second gear and the third gear, a sleeve is rotatably connected to one side of the second rack, a plunger is slidably connected to the inner cavity of the sleeve, one end of the plunger is fixedly connected to the first connecting shaft, the plunger is rotatably connected to the first rack through the first connecting shaft, one end of the first connecting shaft is fixedly connected to the fourth gear, one end of the fourth gear is rotatably connected to the angle sensor, the second gear and the third gear are both rotatably connected to the steering wheel body and the connecting column, and the first rack and the second rack are slidably connected to the steering wheel body.

[0006] Preferably, both ends of the first rack and the second rack are located on the same horizontal line when the steering wheel body is in a horizontal position, and both ends of the first rack and the second rack are located on the same horizontal line, and the sleeve and the insertion rod are relatively perpendicular to the second rack and the first rack.

[0007] Preferably, a pressure sensor is fixedly connected to the inner cavity of the sleeve, and the insertion rod is in contact with the pressure sensor when the steering wheel body is in a horizontal position.

[0008] Preferably, a dial is provided at the top of the steering wheel body, and scale blocks are equidistantly provided in a ring shape on the inner wall of the dial, and display screens for left and right turning angles are respectively provided on both sides of the dial, a fifth gear is meshed with one side of the fourth gear, and a second connecting shaft is fixedly connected to the middle part of the fifth gear, one end of the second connecting shaft passes through the steering wheel body to the dial, and a pointer is fixedly connected to the end of the second connecting shaft that passes through the dial.

[0009] The cam is connected with the first end of the second end of the driving member, and the cam is connected with the first end of the driving member to the second end of the driving member, and the cam is connected with the first end of the driving member to the second end of the driving member.

[0010] Preferably, the two ratchet blocks are symmetrically distributed around the transverse central axis of the second connecting plate, the ratchet block includes two tooth blocks, and the second connecting plate is slidably connected to the connecting column.

[0011] Preferably, a spring sheet is fixedly connected to one side of the limit plate, one end of the spring sheet is fixedly connected to the second connecting plate, the other side of the limit plate is attached to a limit block, and the limit block is fixedly connected to the second connecting plate.

[0012] Preferably, the second rotating plate is L-shaped, and the corners of the second rotating plate are rotatably connected to the steering wheel body. The first rotating plate is arc-shaped, and when the steering wheel body is in a horizontal position, both ends of the inner side of the first rotating plate are in contact with the outer wall of the sleeve, and the bottom end of the extrusion plate is in contact with the top end of the sleeve, and the connecting frame and the extrusion plate are both located in the middle of the first rotating plate.

[0013] Preferably, the turn signal lever comprises an arc-shaped plate and a straight rod, the straight rod is located in the middle of the arc-shaped plate, and the third connecting shaft is located in the middle of the arc-shaped plate.

[0014] Compared with the prior art, the present invention provides a steering wheel with a turning angle detection function, which has the following beneficial effects: 1. The steering wheel with an angle detection function drives the second gear and the third gear to rotate when the first gear rotates, so that the second gear and the third gear respectively drive the first rack and the second rack to move. When the first gear rotates, the moving distance values ​​of the first rack and the second rack are different, and the moving distance difference between the first rack and the second rack will make the sleeve and the plug rod no longer perpendicular to the first rack, and an angle difference will appear, so that the first connecting shaft rotates, and the rotation angle of the steering wheel body is detected. After the rotation angle of the first connecting shaft is detected by the fourth gear, it is transmitted to the angle calculation system of the car to calculate the precise steering wheel rotation angle, thereby improving the detection accuracy of the steering wheel body angle. At the same time, the angle sensor does not directly contact the steering wheel body and the steering shaft, reducing the use consumption of the angle sensor and increasing the service life of the angle sensor.

[0015] 2. The steering wheel with the angle detection function sets the diameter value and the number of teeth of the fifth gear according to the angle difference between the second gear and the third gear by the staff, so that the rotation angle transmitted by the first connecting shaft to the second connecting shaft through the fifth gear is the same as the steering shaft and the steering wheel body, so that the pointer can point to the corresponding scale block in the dial, which is convenient for the driver to judge the rotation angle of the steering wheel body and whether the steering wheel body has returned to the center.

[0016] 3. The steering wheel with a turning angle detection function can rotate around the connecting frame through the first rotating plate, so that when the extrusion plate is squeezed, it will drive the connecting frame and the moving column to slide upward, and when the moving column slides upward, it will push the second rotating plate to rotate, so that the second rotating plate drives the second connecting plate and the limiting plate to move, and the steering wheel body limits the position of the turn signal lever through the third connecting shaft, and when one end of the first rotating plate moves upward, the sleeve is squeezed upward, so that the first rotating plate rotates around the connecting frame, so that the other end of the first rotating plate moves downward to pull the connecting rope, so that the connecting rope pulls the turn signal lever and the third connecting shaft to rotate, so that the turn signal of the corresponding direction of the car is turned on. The third connecting shaft rotates to drive the turntable and the ratchet block to rotate, so that the ratchet block is engaged with the limit plate to limit the rotation of the turntable, thereby limiting the position movement of the third connecting shaft and the turntable, so that the turntable remains in the turned-on state. The ratchet blocks are tilted toward each other, so that the turntable can be rotated to the left or right. The moving position of the second connecting plate is limited by the connecting column, so that the spring sheet maintains the position of the limit plate and ensures that the turntable can rotate normally, so that the limit block can limit the turntable from rotating on its own after being driven by the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 A is an enlarged schematic diagram of the three-dimensional structure; Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of a steering wheel body of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the connection between the first gear, the second gear and the third gear of the present invention; Figure 5 It is a partially cutaway three-dimensional structural schematic diagram of the sleeve of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged three-dimensional structure at B; Figure 7 It is a partially cutaway three-dimensional structural schematic diagram of the turn signal lever of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the connection between the turntable, the ratchet block and the limit plate of the present invention.

[0018] In the figure: 1. steering wheel body; 2. connecting column; 3. steering shaft; 4. first gear; 5. second gear; 6. first rack; 7. third gear; 8. second rack; 9. sleeve; 10. plug rod; 11. first connecting shaft; 12. fourth gear; 13. fifth gear; 14. second connecting shaft; 15. pointer; 16. dial; 17. angle sensor; 18. first connecting plate; 19. moving column; 20. connecting frame; 21. first rotating plate; 22. extrusion plate; 23. second rotating plate; 24. second connecting plate; 25. connecting rope; 26. turn signal lever; 27. third connecting shaft; 28. turntable; 29. ​​ratchet block; 30. limit plate; 31. pressure sensor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a steering wheel with an angle detection function.

[0021] In a typical implementation of the present application, Figure 1-Figure 8As shown, a steering wheel with a turning angle detection function comprises a steering wheel body 1, a connecting column 2 is fixedly connected to the lower end of the steering wheel body 1, a steering shaft 3 is fixedly connected to the lower end of the steering wheel body 1, a first gear 4 is fixedly connected to the upper end of the steering shaft 3, a second gear 5 and a third gear 7 are meshed at one end of the first gear 4, a first rack 6 is meshed at one side of the second gear 5, a second rack 8 is meshed at one side of the third gear 7, the second gear 5 and the third gear 7 have the same diameter value and a difference of one tooth number, the diameter value of the first gear 4 is greater than the diameter value of the second gear 5 and the third gear 7, a sleeve 9 is rotatably connected to one side of the second rack 8, an insert rod 10 is slidably connected to the inner cavity of the sleeve 9, and one end of the insert rod 10 is fixedly connected to the first connecting shaft 11 , the insertion rod 10 is rotationally connected to the first rack 6 through the first connecting shaft 11, one end of the first connecting shaft 11 is fixedly connected to the fourth gear 12, one end of the fourth gear 12 is rotationally connected to the angle sensor 17, the second gear 5 and the third gear 7 are rotationally connected to the steering wheel body 1 and the connecting column 2, the first rack 6 and the second rack 8 are slidingly connected to the steering wheel body 1, the first rack 6 and the second rack 8 are located at the same horizontal line at both ends when the steering wheel body 1 is in a horizontal position, the sleeve 9 and the insertion rod 10 are relatively perpendicular to the second rack 8 and the first rack 6 when both ends of the first rack 6 and the second rack 8 are located at the same horizontal line, the inner cavity of the sleeve 9 is fixedly connected to the pressure sensor 31, and the insertion rod 10 is connected to the pressure sensor 31 when the steering wheel body 1 is in a horizontal position. The sensor 31 is fitted. When in use, the connecting column 2 is fixedly connected to the lower end of the steering wheel body 1, the steering shaft 3 is fixedly connected to the lower end of the steering wheel body 1, and the first gear 4 is fixedly connected to the upper end of the steering shaft 3, so that when the steering wheel body 1 rotates, the connecting column 2, the steering shaft 3 and the first gear 4 are driven to rotate, and the second gear 5 and the third gear 7 are meshed through one end of the first gear 4, the first rack 6 is meshed on one side of the second gear 5, and the second rack 8 is meshed on one side of the third gear 7, so that when the first gear 4 rotates, the second gear 5 and the third gear 7 are driven to rotate, so that the second gear 5 and the third gear 7 respectively drive the first rack 6 and the second rack 8 to move, and the second gear 5 and the third gear 7 have the same diameter value and a difference of one tooth number, The diameter of the first gear 4 is greater than the diameters of the second gear 5 and the third gear 7, so that when the first gear 4 rotates, the moving distances of the first rack 6 and the second rack 8 are different. A sleeve 9 is rotatably connected to one side of the second rack 8, and a plunger 10 is slidably connected to the inner cavity of the sleeve 9. One end of the plunger 10 is fixedly connected to the first connecting shaft 11. The plunger 10 is rotatably connected to the first rack 6 through the first connecting shaft 11, so that the moving distance difference between the first rack 6 and the second rack 8 will make the sleeve 9 and the plunger 10 no longer perpendicular to the first rack 6, and an angle difference will appear, so that the first connecting shaft 11 rotates, and the rotation angle of the steering wheel body 1 is detected. A fourth gear 12 is fixedly connected to one end of the first connecting shaft 11.One end of the fourth gear 12 is rotatably connected to an angle sensor 17, so that the fourth gear 12 detects the rotation angle of the first connecting shaft 11 and transmits it to the car's angle calculation system (generally installed in the steering column below the steering wheel in existing cars), calculates the precise steering wheel rotation angle, thereby improving the detection accuracy of the steering wheel body 1 angle. At the same time, the angle sensor 17 does not directly contact the steering wheel body 1 and the steering shaft 3, reducing the use consumption of the angle sensor 17 and increasing the service life of the angle sensor 17. The second gear 5 and the third gear 7 are both rotatably connected to the steering wheel body 1 and the connecting column 2, and the first rack 6 and the second rack 8 are slidably connected to the steering wheel body 1, so that the steering wheel body 1 limits the movement direction of the second gear 5, the third gear 7, the first rack 6 and the second rack 8. 6 and the second rack 8 are located at the same horizontal line at both ends when the steering wheel body 1 is in a horizontal position. When both ends of the first rack 6 and the second rack 8 are located at the same horizontal line, the sleeve 9 and the plunger 10 are relatively perpendicular to the second rack 8 and the first rack 6, so that when the second gear 5 and the third gear 7 are rotated differentially, the sleeve 9 and the plunger 10 will have an angle change with the first rack 6. Then, the staff can calculate the precise rotation angle of the steering wheel body 1 according to the differential speed and angle change. The pressure sensor 31 is fixedly connected through the inner cavity of the sleeve 9. When the steering wheel body 1 is in a horizontal position, the plunger 10 fits with the pressure sensor 31, so that the pressure sensor 31 can detect whether the sleeve 9 and the plunger 10 are in a vertical position with the first rack 6 and whether the steering wheel body 1 is in a horizontal position, which is beneficial for the staff to correct the position of the steering wheel body 1.

[0022] As a preferred implementation in this embodiment, refer to the attached Figure 1 and Figure 8A dial 16 is provided at the top of the steering wheel body 1, and scale blocks are equidistantly arranged on the inner wall of the dial 16 in an annular shape. Display screens for left and right turning angles are respectively provided on both sides of the dial 16. A fifth gear 13 is meshed on one side of the fourth gear 12, and a second connecting shaft 14 is fixedly connected to the middle of the fifth gear 13. One end of the second connecting shaft 14 passes through the steering wheel body 1 to the dial 16, and a pointer 15 is fixedly connected to one end of the second connecting shaft 14 that passes through the dial 16. Display screens for left and right turning angles are respectively provided on both sides of the dial 16, so that the driver can intuitively view the steering wheel rotation angle through the display screen, and scale blocks are equidistantly arranged on the inner wall of the dial 16 in an annular shape. A fifth gear 13 is meshed on one side of the fourth gear 12, and a second connecting shaft 14 is fixedly connected to the middle of the fifth gear 13. One end of the second connecting shaft 14 passes through the steering wheel body 1 to the dial 16, and a pointer 15 is fixedly connected to one end of the second connecting shaft 14 that passes through the dial 16. Display screens for left and right turning angles are respectively provided on both sides of the dial 16, so that the driver can intuitively view the steering wheel rotation angle through the display screen. There are five gears 13, and the middle part of the fifth gear 13 is fixedly connected with a second connecting shaft 14, one end of the second connecting shaft 14 passes through the steering wheel body 1 to the dial 16, and one end of the second connecting shaft 14 that passes through the dial 16 is fixedly connected with a pointer 15, so that the staff can set the diameter value and the number of teeth of the fifth gear 13 according to the angle difference between the second gear 5 and the third gear 7, so that the rotation angle transmitted by the first connecting shaft 11 to the second connecting shaft 14 through the fifth gear 13 is the same as the steering shaft 3 and the steering wheel body 1, so that the pointer 15 can point to the corresponding scale block in the dial 16, which is convenient for the driver to judge the rotation angle of the steering wheel body 1, and also helps the driver to judge whether the steering wheel body 1 is returned to the center.

[0023] As a preferred implementation in this embodiment, refer to the attached Figure 1 and Figure 8A first connecting plate 18 is fixedly connected to one side of the connecting column 2, a moving column 19 is slidably connected to the middle of the first connecting plate 18, a connecting frame 20 is fixedly connected to the bottom end of the moving column 19, a first rotating plate 21 is rotatably connected to the middle of the connecting frame 20, a pressing plate 22 is fixedly connected to the lower end of the connecting frame 20, a second rotating plate 23 is rotatably connected to the upper end of the moving column 19, a second rotating plate 24 is rotatably connected to the upper end of the second rotating plate 23, both sides of one end of the second connecting plate 24 are rotatably connected to the limiting plate 30, a third connecting shaft 27 is rotatably connected to one end of the steering wheel body 1, a turn signal lever 26 is fixedly connected to the middle of the third connecting shaft 27, a connecting rope 25 is fixedly connected to both ends of the turn signal lever 26, and the two connecting ropes 25 The third connecting shaft 27 is fixedly connected to the steering wheel body 1 and the two ends of the first rotating plate 21, and the lower end of the third connecting shaft 27 is fixedly connected to a rotating disk 28. Both sides of the outer wall of the rotating disk 28 are fixedly connected to ratchet blocks 29. The two ratchet blocks 29 are respectively correspondingly engaged with the two limit plates 30. The two ratchet blocks 29 are symmetrically distributed with the transverse central axis of the second connecting plate 24 as the center. The ratchet block 29 includes two tooth blocks. The second connecting plate 24 is slidably connected to the connecting column 2. One side of the limit plate 30 is fixedly connected to a spring sheet, one end of the spring sheet is fixedly connected to the second connecting plate 24, and the other side of the limit plate 30 is fitted with the limit block. The limit block is fixedly connected to the second connecting plate 24. The second rotating plate 23 is L-shaped, and the corner of the second rotating plate 23 is connected to the steering wheel body 1 Rotational connection, the first rotating plate 21 is arc-shaped, and when the steering wheel body 1 is in a horizontal position, the two ends of the inner side of the first rotating plate 21 are both in contact with the outer wall of the sleeve 9, and the bottom end of the extrusion plate 22 is in contact with the top end of the sleeve 9. The connecting frame 20 and the extrusion plate 22 are both located in the middle of the first rotating plate 21. The turn signal lever 26 includes an arc-shaped plate and a straight rod, and the straight rod is located in the middle of the arc-shaped plate. The third connecting shaft 27 is located in the middle of the arc-shaped plate. The first connecting plate 18 is fixedly connected to one side of the connecting column 2, so that the connecting column 2 fixes the position of the first connecting plate 18, and the moving column 19 is slidably connected to the middle of the first connecting plate 18. The bottom end of the moving column 19 is fixedly connected to the connecting frame 20, and the middle of the connecting frame 20 is rotatably connected to the first rotating plate 21. The lower end of the connecting frame 20 is fixedly connected with an extrusion plate 22, so that the first rotating plate 21 can rotate around the connecting frame 20, so that when the extrusion plate 22 is squeezed, it will drive the connecting frame 20 and the moving column 19 to slide upward, and the second rotating plate 23 is rotatably connected to the upper end of the moving column 19, and the upper end of the second rotating plate 23 is rotatably connected to the second connecting plate 24, and both sides of one end of the second connecting plate 24 are rotatably connected to the limiting plate 30, so that when the moving column 19 slides upward, it will push the second rotating plate 23 to rotate, so that the second rotating plate 23 drives the second connecting plate 24 and the limiting plate 30 to move, and the third connecting shaft 27 is rotatably connected to one end of the steering wheel body 1, and the middle part of the third connecting shaft 27 is fixedly connected to the turn signal lever 26,The steering wheel body 1 limits the position of the turn signal lever 26 through the third connecting shaft 27, and the two ends of the turn signal lever 26 are fixedly connected with connecting ropes 25. The two connecting ropes 25 respectively penetrate the steering wheel body 1 and are fixedly connected to the two ends of the first rotating plate 21, so that one end of the first rotating plate 21 is squeezed upward when the sleeve 9 moves, so that the first rotating plate 21 rotates around the connecting frame 20, so that the other end of the first rotating plate 21 moves downward to pull the connecting rope 25, so that the connecting rope 25 pulls the turn signal lever 26 and the third connecting shaft 27 to rotate, so that the turn signal of the corresponding direction of the car is turned on, so as to avoid the driver forgetting to pull the turn signal lever 26 when turning, so that the turn signal is not turned on. In order to improve the driving safety of the driver, a turntable 28 is fixedly connected to the lower end of the third connecting shaft 27, and ratchet blocks 29 are fixedly connected to the two sides of the outer wall of the turntable 28. The two ratchet blocks 29 are respectively correspondingly engaged with the two limit plates 30, so that when the third connecting shaft 27 rotates, the turntable 28 and the ratchet blocks 29 are driven to rotate, so that the ratchet blocks 29 are engaged with the limit plates 30 to limit the rotation of the turntable 28, thereby limiting the position movement of the third connecting shaft 27 and the turn signal lever 26, so that the turn signal remains in the on state, and the two ratchet blocks 29 are symmetrically distributed with the transverse central axis of the second connecting plate 24 as the center, and the ratchet blocks 29 include two tooth blocks, so that the ratchet blocks 29 are inclined toward each other, so that the turntable 28 The vehicle can rotate left or right, so that the two gear blocks can cooperate to limit the moving position of the limit plate 30, and the second connecting plate 24 is slidably connected to the connecting column 2, so that the connecting column 2 limits the moving position of the second connecting plate 24, and a spring piece is fixedly connected to one side of the limit plate 30, one end of the spring piece is fixedly connected to the second connecting plate 24, and the other side of the limit plate 30 is fitted with a limit block, and the limit block is fixedly connected to the second connecting plate 24, so that the spring piece maintains the position of the limit plate 30, and ensures that the turntable 28 can rotate normally, so that the limit block can limit the turntable 28 from rotating by itself after being driven by the turn signal lever 26, and the second rotating plate 23 is L-shaped, and the corner of the second rotating plate 23 rotates with the steering wheel body 1 The movable connection makes it possible for the second rotating plate 23 to drive the second connecting plate 24 to move when the movable column 19 pushes the second rotating plate 23. The first rotating plate 21 is arc-shaped, so that one side of the first rotating plate 21 is lifted up and the other side will drop. When the steering wheel body 1 is in a horizontal position, both ends of the inner side of the first rotating plate 21 are in contact with the outer wall of the sleeve 9, ensuring that the sleeve 9 will lift up one side of the first rotating plate 21 when it moves. The bottom end of the extruding plate 22 is in contact with the top end of the sleeve 9, so that the sleeve 9 will lift up the extruding plate 22 when it returns to its original position, so that the movable column 19 lifts up the second rotating plate 23, so that the second connecting plate 24 drives the limiting plate 30 to move, so that the limiting plate 30 is disconnected from the ratchet block 29.When the sleeve 9 returns to its original position, the first rotating plate 21 will also return to its original position, pulling the connecting rope 25 and the turn signal lever 26 to rotate in the opposite direction, so that the turntable 28 rotates in the opposite direction and returns to its original position until the next use. The connecting frame 20 and the extrusion plate 22 are both located in the middle of the first rotating plate 21, so that the moving distances of both sides of the first rotating plate 21 are the same. The turn signal lever 26 includes an arc plate and a straight rod, the straight rod is located in the middle of the arc plate, and the third connecting shaft 27 is located in the middle of the arc plate, so that the moving positions of both sides of the turn signal lever 26 are the same.

[0024] The working principle of the present invention is as follows: when in use, the second gear 5 and the third gear 7 are both rotatably connected to the steering wheel body 1 and the connecting column 2, and the first rack 6 and the second rack 8 are slidably connected to the steering wheel body 1, so that when the steering wheel body 1 rotates, the connecting column 2, the steering shaft 3 and the first gear 4 are driven to rotate, and when the first gear 4 rotates, the second gear 5 and the third gear 7 are driven to rotate, so that the second gear 5 and the third gear 7 respectively drive the first rack 6 and the second rack 8 to move, and when the first gear 4 rotates, the moving distances of the first rack 6 and the second rack 8 are different, and the first rack 6 and the second rack 8 The difference in moving distance will cause the sleeve 9 and the insert rod 10 to no longer be perpendicular to the first rack 6, and an angle difference will occur, causing the first connecting shaft 11 to rotate, and the rotation angle of the steering wheel body 1 is detected. The rotation angle of the first connecting shaft 11 is detected by the fourth gear 12 and then transmitted to the car's angle calculation system to calculate the precise steering wheel rotation angle, thereby improving the angle detection accuracy of the steering wheel body 1. At the same time, the angle sensor 17 does not come into direct contact with the steering wheel body 1 and the steering shaft 3, reducing the use consumption of the angle sensor 17 and increasing the service life of the angle sensor 17.

[0025] The staff sets the diameter value and the number of teeth of the fifth gear 13 according to the angle difference between the second gear 5 and the third gear 7, so that the rotation angle transmitted by the first connecting shaft 11 to the second connecting shaft 14 through the fifth gear 13 is the same as the steering shaft 3 and the steering wheel body 1, so that the pointer 15 can point to the corresponding scale block in the dial 16, which is convenient for the driver to judge the rotation angle of the steering wheel body 1 and also helps the driver to judge whether the steering wheel body 1 has returned to the center.

[0026] The first rotating plate 21 can rotate around the connecting frame 20, so that when the extrusion plate 22 is squeezed, it will drive the connecting frame 20 and the moving column 19 to slide upward, and when the moving column 19 slides upward, it will push the second rotating plate 23 to rotate, so that the second rotating plate 23 drives the second connecting plate 24 and the limiting plate 30 to move, and the steering wheel body 1 limits the position of the turn signal lever 26 through the third connecting shaft 27. When one end of the first rotating plate 21 moves, it is squeezed upward, so that the first rotating plate 21 rotates around the connecting frame 20, so that the other end of the first rotating plate 21 moves downward to pull the connecting rope 25, so that the connecting rope 25 pulls the turn signal lever 26 and the third connecting shaft 27 to rotate, so that the turn signal of the corresponding direction of the car is turned on, avoiding the driver from turning the car in the wrong direction. The driver forgets to turn the turn signal lever 26 when turning, so that the turn signal is not turned on but the driver turns. This improves the driving safety of the driver. When the third connecting shaft 27 rotates, the turntable 28 and the ratchet block 29 are driven to rotate, so that the ratchet block 29 is engaged with the limit plate 30 to limit the rotation of the turntable 28, thereby limiting the position movement of the third connecting shaft 27 and the turn signal lever 26, so that the turn signal remains on. The ratchet block 29 is tilted toward each other, so that the turntable 28 can rotate to the left or right. The moving position of the second connecting plate 24 is limited by the connecting column 2, so that the spring sheet maintains the position of the limit plate 30 and ensures that the turntable 28 can rotate normally, so that the limit block can limit the turntable 28 from rotating on its own after being driven by the turn signal lever 26.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steering wheel with a turning angle detection function, characterized in that: The invention comprises a steering wheel body (1), wherein the lower end of the steering wheel body (1) is fixedly connected to a connecting column (2), the lower end of the steering wheel body (1) is fixedly connected to a steering shaft (3), the upper end of the steering shaft (3) is fixedly connected to a first gear (4), one end of the first gear (4) is meshed with a second gear (5) and a third gear (7), one side of the second gear (5) is meshed with a first rack (6), one side of the third gear (7) is meshed with a second rack (8), the second gear (5) and the third gear (7) have the same diameter value and a difference of one tooth number, the diameter value of the first gear (4) is greater than the diameter value of the second gear (5) and the third gear (7), and the second gear (8) is meshed with a first rack (6). One side of the rack (8) is rotatably connected to a sleeve (9), the inner cavity of the sleeve (9) is slidably connected to an insertion rod (10), one end of the insertion rod (10) is fixedly connected to a first connecting shaft (11), the insertion rod (10) is rotatably connected to the first rack (6) via the first connecting shaft (11), one end of the first connecting shaft (11) is fixedly connected to a fourth gear (12), one end of the fourth gear (12) is rotatably connected to an angle sensor (17), the second gear (5) and the third gear (7) are both rotatably connected to the steering wheel body (1) and the connecting column (2), and the first rack (6) and the second rack (8) are slidably connected to the steering wheel body (1).

2. The steering wheel with a turning angle detection function according to claim 1, characterized in that: When the steering wheel body (1) is in a horizontal position, both ends of the first rack (6) and the second rack (8) are located on the same horizontal line; when both ends of the first rack (6) and the second rack (8) are located on the same horizontal line, the sleeve (9) and the insertion rod (10) are both relatively perpendicular to the second rack (8) and the first rack (6).

3. The steering wheel with a turning angle detection function according to claim 1, characterized in that: The inner cavity of the sleeve (9) is fixedly connected to a pressure sensor (31), and when the steering wheel body (1) is in a horizontal position, the insertion rod (10) fits the pressure sensor (31).

4. The steering wheel with a turning angle detection function according to claim 1, characterized in that: A dial (16) is arranged at the top of the steering wheel body (1), and scale blocks are arranged in an annular manner at equal intervals on the inner wall of the dial (16). Display screens for left and right turning angles are arranged on both sides of the dial (16), and a fifth gear (13) is meshed with one side of the fourth gear (12). A second connecting shaft (14) is fixedly connected to the middle of the fifth gear (13), and one end of the second connecting shaft (14) passes through the steering wheel body (1) to the dial (16), and a pointer (15) is fixedly connected to one end of the second connecting shaft (14) that passes through the dial (16).

5. The steering wheel with a turning angle detection function according to claim 1, characterized in that: A first connecting plate (18) is fixedly connected to one side of the connecting column (2); a movable column (19) is slidably connected to the middle of the first connecting plate (18); a connecting frame (20) is fixedly connected to the bottom end of the movable column (19); a first rotating plate (21) is rotatably connected to the middle of the connecting frame (20); an extrusion plate (22) is fixedly connected to the lower end of the connecting frame (20); a second rotating plate (23) is rotatably connected to the upper end of the movable column (19); a second connecting plate (24) is rotatably connected to the upper end of the second rotating plate (23); and both sides of one end of the second connecting plate (24) are rotatably connected to a limiting plate (30). One end of the steering wheel body (1) is rotatably connected to a third connecting shaft (27), a middle portion of the third connecting shaft (27) is fixedly connected to a turn signal lever (26), both ends of the turn signal lever (26) are fixedly connected to connecting ropes (25), two connecting ropes (25) respectively penetrate the steering wheel body (1) and are fixedly connected to both ends of the first rotating plate (21), a lower end of the third connecting shaft (27) is fixedly connected to a turntable (28), both sides of an outer wall of the turntable (28) are fixedly connected to ratchet blocks (29), and the two ratchet blocks (29) are respectively correspondingly engaged with the two limit plates (30).

6. The steering wheel with a turning angle detection function according to claim 5, characterized in that: The two ratchet blocks (29) are symmetrically distributed around the transverse central axis of the second connecting plate (24), the ratchet block (29) comprises two tooth blocks, and the second connecting plate (24) is slidably connected to the connecting column (2).

7. The steering wheel with a turning angle detection function according to claim 5, characterized in that: A spring sheet is fixedly connected to one side of the limit plate (30), one end of the spring sheet is fixedly connected to the second connecting plate (24), and a limit block is affixed to the other side of the limit plate (30), and the limit block is fixedly connected to the second connecting plate (24).

8. The steering wheel with a turning angle detection function according to claim 5, characterized in that: The second rotating plate (23) is L-shaped, and the corner of the second rotating plate (23) is rotatably connected to the steering wheel body (1). The first rotating plate (21) is arc-shaped. When the steering wheel body (1) is in a horizontal position, both ends of the inner side of the first rotating plate (21) are in contact with the outer wall of the sleeve (9), the bottom end of the extrusion plate (22) is in contact with the top end of the sleeve (9), and the connecting frame (20) and the extrusion plate (22) are both located in the middle of the first rotating plate (21).

9. The steering wheel with a turning angle detection function according to claim 5, characterized in that: The turn signal lever (26) comprises an arc-shaped plate and a straight rod, the straight rod is located in the middle of the arc-shaped plate, the third connecting shaft (27) is located in the middle of the arc-shaped plate, and the third connecting shaft (27) is rotatably connected to the arc-shaped plate.

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