A steering wheel with corner detection function

Abstract

This invention relates to the field of steering wheels and discloses a steering wheel with an angle detection function. The steering wheel includes 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 lower end of the steering wheel body, and a first gear fixedly connected to the upper end of the steering shaft. One end of the first gear meshes with a second gear and a third gear. One side of the second gear meshes with a first rack, and one side of the third gear meshes with a second rack. The second and third gears have the same diameter but different numbers of teeth, and the diameter of the first gear is larger than the diameters of the second and third gears. Compared to existing technologies, this invention improves the accuracy of angle detection of the steering wheel body. Simultaneously, the angle sensor does not directly contact the steering wheel body and the steering shaft, reducing wear and tear on the angle sensor and increasing its service life.

Description

Technical Field

[0001] This invention relates to the field of steering wheels, specifically to a steering wheel with a steering angle detection function. Background Technology

[0002] The steering wheel is usually connected to the steering shaft via splines. 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, the driver can apply less hand force to the steering wheel.

[0003] In the prior art, Chinese patent document CN203957891U discloses a steering wheel for measuring steering angle, which solves the problems of high price, low service life and low reliability of steering wheel angle sensors. However, in practical applications, the use of non-contact steering wheel angle sensors can lead to inaccurate steering wheel angle measurement data. At the same time, direct measurement of the steering wheel rotation angle by the steering wheel angle sensor can also result in greater wear and tear on the sensor, shortening its service life. Therefore, we disclose a steering wheel with steering angle detection function to meet the need to improve the accuracy of steering wheel angle detection. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a steering wheel with a steering angle detection function, which has advantages such as improving the accuracy of steering wheel angle detection and solving the problem of low steering wheel angle detection accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steering wheel with a steering 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 lower end of the steering wheel body, a first gear fixedly connected to the upper end of the steering shaft, a second gear and a third gear meshing at one end of the first gear, a first rack meshing at one side of the second gear, a second rack meshing at one side of the third gear, the second gear and the third gear having the same diameter but differing by one tooth, the diameter of the first gear being greater than the diameters of the second gear and the third gear, a sleeve rotatably connected to one side of the second rack, a rod slidably connected to the inner cavity of the sleeve, a first connecting shaft fixedly connected to one end of the rod, the rod being rotatably connected to the first rack via the first connecting shaft, a fourth gear fixedly connected to one end of the first connecting shaft, an angle sensor rotatably connected to one end of the fourth gear, the second gear and the third gear being rotatably connected to the steering wheel body and the connecting column, and the first rack and the second rack being slidably connected to the steering wheel body.

[0006] Preferably, when the steering wheel body is in a horizontal position, the first rack and the second rack are located at the same horizontal line at both ends, and when both ends of the first rack and the second rack are located at the same horizontal line, the sleeve and the insert are 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 insert 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 provided equidistantly in a ring on the inner wall of the dial. Left and right corner display screens are provided on both sides of the dial. A fifth gear is meshed on one side of the fourth gear. A second connecting shaft is fixedly connected to the middle of the fifth gear. One end of the second connecting shaft passes through the steering wheel body into the dial, and a pointer is fixedly connected to the end of the second connecting shaft that passes through the dial.

[0009] Preferably, a first connecting plate is fixedly connected to one side of the connecting column, a movable column is slidably connected to the middle of the first connecting plate, a connecting frame is fixedly connected to the bottom end of the movable column, a first rotating plate is rotatably connected to the middle of the connecting frame, a pressing plate is fixedly connected to the lower end of the connecting frame, a second rotating plate is rotatably connected to the upper end of the movable column, a second connecting plate is rotatably connected to the upper end of the second rotating plate, and limit plates are rotatably connected to both sides of one end of the second connecting plate. A third connecting shaft is rotatably connected to one end of the steering wheel body, a turn signal lever is fixedly connected to the middle of the third connecting shaft, and connecting ropes are fixedly connected to both ends of the turn signal lever. The two connecting ropes pass through the steering wheel body and are fixedly connected to both ends of the first rotating plate. A turntable is fixedly connected to the lower end of the third connecting shaft, and ratchet blocks are fixedly connected to both sides of the outer wall of the turntable. The two ratchet blocks are respectively engaged with the two limit plates.

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

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

[0012] Preferably, the second rotating plate is L-shaped, and the corner of the second rotating plate is 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. The bottom end of the extrusion plate is in contact with the top end of the sleeve. The connecting frame and the extrusion plate are both located in the middle of the first rotating plate.

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

[0014] Compared with the prior art, the present invention provides a steering wheel with corner detection function, which has the following beneficial effects:

[0015] 1. This steering wheel with angle detection function, when the first gear rotates, drives the second and third gears to rotate, causing the second and third gears to move the first and second racks respectively. The difference in the distances traveled by the first and second racks during rotation, and the resulting difference in travel distance, causes the sleeve and insert rod to lose their perpendicularity to the first rack, resulting in an angle difference. This causes the first connecting shaft to rotate, detecting the rotation angle of the steering wheel body. After the fourth gear detects the rotation angle of the first connecting shaft, it transmits the information to the vehicle's angle calculation system to calculate the precise steering wheel rotation angle, thereby improving the accuracy of steering wheel angle detection. Simultaneously, the angle sensor does not directly contact the steering wheel body or steering shaft, reducing wear and tear on the angle sensor and extending its lifespan.

[0016] 2. This steering wheel with corner detection function allows the operator to set the diameter and number of teeth of the fifth gear based on the angle difference between the second and third gears. This ensures that the rotation angle transmitted from the first connecting shaft to the second connecting shaft via the fifth gear is the same as that of the steering shaft and the steering wheel body. As a result, the pointer can point to the corresponding scale block on the dial, making it easier for the driver to judge the rotation angle of the steering wheel body and whether the steering wheel body has returned to center.

[0017] 3. This steering wheel with corner detection function allows the first rotating plate to rotate around the connecting frame. When the pressing plate is pressed, it causes the connecting frame and the moving column to slide upwards. The upward sliding of the moving column pushes the second rotating plate to rotate, causing the second rotating plate to move the second connecting plate and the limiting plate. The steering wheel body restricts the position of the turn signal stalk via the third connecting shaft. When one end of the first rotating plate moves, it is pressed upwards by the sleeve, causing the first rotating plate to rotate around the connecting frame. This causes the other end of the first rotating plate to move downwards, pulling the connecting rope. The connecting rope then pulls the turn signal stalk and the third connecting shaft to rotate, thus turning on the turn signal for the corresponding direction of the car. To prevent drivers from forgetting to activate the turn signal lever when turning, thus improving driving safety, the third connecting shaft rotates, causing the turntable and ratchet block to rotate. This ratchet block engages with the limiting plate, restricting the rotation of the turntable and limiting the positional movement of the third connecting shaft and the turn signal lever, keeping the turn signal on. The ratchet block tilts in opposite directions, allowing the turntable to rotate to the left or right. The connecting post restricts the movement of the second connecting plate, allowing the spring to maintain the position of the limiting plate and ensuring the turntable can rotate normally. The limiting block prevents the turntable from rotating back on its own after being driven by the turn signal lever. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 A magnified three-dimensional structural diagram at point A;

[0020] Figure 3 This is a partial cutaway three-dimensional structural diagram of the steering wheel body of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram showing the connection between the first gear, the second gear, and the third gear of the present invention.

[0022] Figure 5 This is a partially cut-away three-dimensional structural diagram of the sleeve of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged 3D structural diagram at point B;

[0024] Figure 7 This is a partially cutaway three-dimensional structural diagram of the turn signal lever of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram showing the connection between the turntable, ratchet block, and limiting plate of the present invention.

[0026] In the diagram: 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. Insert 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. Pressing 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. Limiting plate; 31. Pressure sensor. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a steering wheel with corner detection function.

[0029] In one typical implementation of this application, such as Figures 1-8As shown, a steering wheel with a steering angle detection function includes a steering wheel body 1. A connecting post 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 on one side of the second gear 5. A second rack 8 is meshed on one side of the third gear 7. The second gear 5 and the third gear 7 have the same diameter but differ in the number of teeth by one. The diameter of the first gear 4 is larger than the diameters of the second gear 5 and the third gear 7. A sleeve 9 is rotatably connected to one side of the second rack 8. A plug rod 10 is slidably connected to the inner cavity of the sleeve 9. A first connecting shaft 11 is fixedly connected to one end of the plug rod 10. The insertion rod 10 is rotatably connected to the first rack 6 via the first connecting shaft 11. A fourth gear 12 is fixedly connected to one end of the first connecting shaft 11, and an angle sensor 17 is rotatably connected to one end of the fourth gear 12. The second gear 5 and the third gear 7 are rotatably connected to the steering wheel body 1 and the connecting post 2. The first rack 6 and the second rack 8 are slidably connected to the steering wheel body 1. When the steering wheel body 1 is in a horizontal position, the two ends of the first rack 6 and the second rack 8 are on the same horizontal line. When both ends of the first rack 6 and the second rack 8 are on the same horizontal line, the sleeve 9 and the insertion rod 10 are perpendicular to the second rack 8 and the first rack 6. A pressure sensor 31 is fixedly connected to the inner cavity of the sleeve 9. When the steering wheel body 1 is in a horizontal position, the insertion rod 10 is perpendicular to the pressure sensor 31. Sensor 31 is attached. During use, a connecting post 2 is fixedly connected to the lower end of the steering wheel body 1, and 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. When the steering wheel body 1 rotates, it drives the connecting post 2, the steering shaft 3, and the first gear 4 to rotate. A second gear 5 and a third gear 7 mesh with one end of the first gear 4. A first rack 6 meshes with one side of the second gear 5, and a second rack 8 meshes with one side of the third gear 7. When the first gear 4 rotates, it drives the second gear 5 and the third gear 7 to rotate, causing the second gear 5 and the third gear 7 to move the first rack 6 and the second rack 8 respectively. The second gear 5 and the third gear 7 have the same diameter but differ in the number of teeth by one. The diameter of the first gear 4 is larger than that of the second gear 5 and the third gear 7, causing the first rack 6 and the second rack 8 to move different distances when the first gear 4 rotates. A sleeve 9 is rotatably connected to one side of the second rack 8, and a rod 10 is slidably connected to the inner cavity of the sleeve 9. One end of the rod 10 is fixedly connected to a first connecting shaft 11. The rod 10 is rotatably connected to the first rack 6 through the first connecting shaft 11. The difference in the distance the first rack 6 and the second rack 8 move causes the sleeve 9 and the rod 10 to no longer be perpendicular to the first rack 6, resulting in an angular difference. This causes the first connecting shaft 11 to rotate, detecting the rotation angle of the steering wheel body 1. A fourth gear 12 is fixedly connected to one end of the first connecting shaft 11.An angle sensor 17 is rotatably connected to one end of the fourth gear 12. This allows the fourth gear 12 to detect the rotation angle of the first connecting shaft 11 and transmit it to the vehicle's steering angle calculation system (typically installed in the steering column below the steering wheel in existing vehicles). This system calculates the precise steering wheel rotation angle, thereby improving the accuracy of steering angle detection for the steering wheel body 1. Simultaneously, the angle sensor 17 does not directly contact the steering wheel body 1 or the steering shaft 3, reducing wear and tear and extending its lifespan. The second gear 5 and the third gear 7 are rotatably connected to the steering wheel body 1 and the connecting column 2, while the first rack 6 and the second rack 8 are slidably connected to the steering wheel body 1. This restricts the movement direction of the second gear 5, the third gear 7, the first rack 6, and the second rack 8. When the steering wheel body 1 is in a horizontal position, the two ends of rack 6 and rack 8 are on the same horizontal line. When both ends of rack 6 and rack 8 are on the same horizontal line, sleeve 9 and insert rod 10 are perpendicular to rack 8 and rack 6. This causes an angle change between sleeve 9 and insert rod 10 and rack 6 when the second gear 5 and third gear 7 rotate at different speeds. Based on the differential speed and angle change, the operator can calculate the precise rotation angle of the steering wheel body 1. A pressure sensor 31 is fixedly connected to the inner cavity of sleeve 9. When the steering wheel body 1 is in a horizontal position, insert rod 10 is in contact with pressure sensor 31, allowing pressure sensor 31 to detect whether sleeve 9 and insert rod 10 are perpendicular to rack 6 and whether the steering wheel body 1 is horizontal, facilitating the operator's correction of the steering wheel body 1's position.

[0030] As a preferred embodiment of this example, please refer to the appendix. Figure 1 and Figure 8The steering wheel body 1 has a dial 16 at its top. The inner wall of the dial 16 has equidistant, annular scale blocks. Left and right angle display screens are located on both sides of the dial 16. A fifth gear 13 meshes with one side of the fourth gear 12. 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 the other end of the second connecting shaft 14 inside the dial 16. The left and right angle display screens on both sides of the dial 16 allow the driver to visually observe the steering wheel's rotation angle. The inner wall of the dial 16 has equidistant, annular scale blocks. The fourth gear 12 meshes with a fifth gear 13 on one side. The fifth gear 13 has a second connecting shaft 14 fixedly connected to its middle part. One end of the second connecting shaft 14 passes through the steering wheel body 1 to the dial 16. The end of the second connecting shaft 14 that passes through the dial 16 is fixedly connected to a pointer 15. This allows the operator to set the diameter and number of teeth of the fifth gear 13 according to the angle difference between the second gear 5 and the third gear 7. This ensures that the rotation angle transmitted from the first connecting shaft 11 to the second connecting shaft 14 through the fifth gear 13 is the same as that of the steering shaft 3 and the steering wheel body 1. This allows the pointer 15 to point to the corresponding scale block in the dial 16, making it easier for the driver to judge the rotation angle of the steering wheel body 1 and whether the steering wheel body 1 has returned to center.

[0031] As a preferred embodiment of this example, please refer to the appendix. 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 connecting plate 24 is rotatably connected to the upper end of the second rotating plate 23. Limiting plates 30 are rotatably connected to both sides of one end of the second connecting plate 24. 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. Connecting ropes 25 are fixedly connected to both ends of the turn signal lever 26. The steering wheel body 1 and the first rotating plate 21 are fixedly connected at both ends respectively. The lower end of the third connecting shaft 27 is fixedly connected to the turntable 28. Both sides of the outer wall of the turntable 28 are fixedly connected to ratchet blocks 29. The two ratchet blocks 29 are respectively engaged with the two limiting 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 toothed blocks. The second connecting plate 24 is slidably connected to the connecting post 2. A spring is fixedly connected to one side of the limiting plate 30. One end of the spring is fixedly connected to the second connecting plate 24. The other side of the limiting plate 30 is fitted with a limiting block. The limiting block is fixedly connected to the second connecting plate 24. The second rotating plate 23 is L-shaped. The corner of the second rotating plate 23 is 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. 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. 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. A 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. The middle of the connecting frame 20 is rotatably connected to the first rotating plate 21. A pressing plate 22 is fixedly connected to the lower end of the connecting frame 20, allowing the first rotating plate 21 to rotate around the connecting frame 20. When the pressing plate 22 is pressed, it causes the connecting frame 20 and the moving column 19 to slide upwards. A second rotating plate 23 is rotatably connected to the upper end of the moving column 19, and a second connecting plate 24 is rotatably connected to the upper end of the second rotating plate 23. Limiting plates 30 are rotatably connected to both sides of one end of the second connecting plate 24, so that when the moving column 19 slides upwards, it pushes the second rotating plate 23 to rotate, thereby causing the second rotating plate 23 to move the second connecting plate 24 and the limiting plates 30. A third connecting shaft 27 is rotatably connected to one end of the steering wheel body 1, and a turn signal lever 26 is fixedly connected to the middle of the third connecting shaft 27.The steering wheel body 1 is positioned to limit the turn signal lever 26 via the third connecting shaft 27. Connecting ropes 25 are fixedly connected to both ends of the turn signal lever 26, passing through the steering wheel body 1 and the two ends of the first rotating plate 21 respectively. When the sleeve 9 moves, one end of the first rotating plate 21 is pressed upwards, causing it to rotate around the connecting bracket 20. This causes the other end of the first rotating plate 21 to move downwards, pulling the connecting ropes 25. The connecting ropes 25 then pull the turn signal lever 26 and the third connecting shaft 27 to rotate, thus activating the turn signal for the corresponding direction of the vehicle. This prevents the driver from forgetting to activate the turn signal lever 26 when turning, ensuring the turn signal is activated before the turn signal is engaged. When a turn signal is activated, to improve driver safety, a turntable 28 is fixedly connected to the lower end of the third connecting shaft 27. Ratchet blocks 29 are fixedly connected to both sides of the outer wall of the turntable 28. The two ratchet blocks 29 are respectively engaged with the two limiting plates 30. When the third connecting shaft 27 rotates, it drives the turntable 28 and ratchet blocks 29 to rotate, causing the ratchet blocks 29 to engage with the limiting plates 30, restricting the rotation of the turntable 28. This restricts the positional movement of the third connecting shaft 27 and the turn signal lever 26, keeping the turn signal on. The two ratchet blocks 29 are symmetrically distributed around the transverse central axis of the second connecting plate 24. Each ratchet block 29 includes two toothed blocks, causing the ratchet blocks 29 to tilt towards each other, thus allowing the turntable 28 to... The steering wheel 30 can rotate to make either a left or right turn, allowing the two toothed blocks to engage and restrict the movement of the limiting plate 30. The second connecting plate 24 is slidably connected to the connecting post 2, which in turn restricts the movement of the second connecting plate 24. A spring is fixedly connected to one side of the limiting plate 30, with one end of the spring fixedly connected to the second connecting plate 24. A limiting block is attached to the other side of the limiting plate 30 and is fixedly connected to the second connecting plate 24. This allows the spring to maintain the position of the limiting plate 30 and ensures that the turntable 28 can rotate normally. The limiting block restricts the turntable 28 from rotating on its own after being driven by the turn signal lever 26. The second rotating plate 23 is L-shaped, and its corner is connected to the steering wheel body 1. The moving connection allows the second rotating plate 23 to move along with the second connecting plate 24 when the moving column 19 pushes it. The first rotating plate 21 is arc-shaped, so that when one side of the first rotating plate 21 is lifted, the other side will descend. 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 lifts one side of the first rotating plate 21 during movement. The bottom end of the pressing plate 22 is in contact with the top end of the sleeve 9, so that when the sleeve 9 returns to its original position, it lifts the pressing plate 22, causing the moving column 19 to lift the second rotating plate 23. This causes the second connecting plate 24 to move the limiting plate 30, disengaging the limiting plate 30 from the ratchet block 29.When the sleeve 9 returns to its original position, the first rotating plate 21 also returns to its original position, pulling the connecting rope 25 and the turn signal lever 26 to rotate in the opposite direction, thereby causing the turntable 28 to rotate in the opposite direction and return to its original position. For the next use, the connecting frame 20 and the pressing plate 22 are both located in the middle of the first rotating plate 21, ensuring that the two sides of the first rotating plate 21 move the same distance. The turn signal lever 26 includes an arc-shaped plate and a straight rod, with the straight rod located in the middle of the arc-shaped plate. The third connecting shaft 27 is also located in the middle of the arc-shaped plate, ensuring that the two sides of the turn signal lever 26 move the same distance.

[0032] The working principle of this invention is as follows: In use, the second gear 5 and the third gear 7 are rotatably connected to the steering wheel body 1 and the connecting column 2, while the first rack 6 and the second rack 8 are slidably connected to the steering wheel body 1. When the steering wheel body 1 rotates, it drives the connecting column 2, the steering shaft 3, and the first gear 4 to rotate. The rotation of the first gear 4 then drives the second gear 5 and the third gear 7 to rotate, causing the second gear 5 and the third gear 7 to respectively move the first rack 6 and the second rack 8. The different distances the first rack 6 and the second rack 8 travel when the first gear 4 rotates, and the different distances they travel, are all related to the rotation of the first gear 4 and the rotation of the first rack 6 and the second rack 8. The difference in movement distance between the sleeve 9 and the insert rod 10 will cause them to no longer be perpendicular to the first rack 6, resulting in an angular difference. This causes the first connecting shaft 11 to rotate, detecting the rotation angle of the steering wheel body 1. After the rotation angle of the first connecting shaft 11 is detected by the fourth gear 12, it is transmitted to the car's steering angle calculation system to calculate the accurate steering wheel rotation angle, thereby improving the accuracy of steering angle detection of the steering wheel body 1. At the same time, the angle sensor 17 does not directly contact the steering wheel body 1 and the steering shaft 3, reducing the wear and tear on the angle sensor 17 and increasing its service life.

[0033] The staff set the diameter and 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 from the first connecting shaft 11 to the second connecting shaft 14 through the fifth gear 13 is the same as that of the steering shaft 3 and the steering wheel body 1. This allows the pointer 15 to point to the corresponding scale block in the dial 16, which makes it easier 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 center.

[0034] The first rotating plate 21 can rotate around the connecting frame 20, causing the pressing plate 22 to be pressed, which in turn causes the connecting frame 20 and the moving column 19 to slide upwards. The upward sliding of the moving column 19 pushes the second rotating plate 23 to rotate, causing the second rotating plate 23 to move the second connecting plate 24 and the limiting plate 30. The steering wheel body 1 restricts the position of the turn signal lever 26 via the third connecting shaft 27. When one end of the first rotating plate 21 moves, it is pressed upwards by the sleeve 9, causing the first rotating plate 21 to rotate around the connecting frame 20. This causes the other end of the first rotating plate 21 to move downwards, pulling the connecting rope 25. The connecting rope 25 then pulls the turn signal lever 26 and the third connecting shaft 27 to rotate, thus turning on the turn signal for the corresponding direction of the car and preventing the driver from being distracted. If the driver forgets to activate the turn signal lever 26 when turning, resulting in the turn signal not being activated, this system improves driver safety. The rotation of the third connecting shaft 27 drives the turntable 28 and ratchet block 29 to rotate, causing the ratchet block 29 to engage with the limiting plate 30, restricting the rotation of the turntable 28. This limits the positional movement of the third connecting shaft 27 and the turn signal lever 26, keeping the turn signal on. The ratchet block 29 tilts in opposite directions, allowing the turntable 28 to rotate left or right. The connecting post 2 restricts the movement of the second connecting plate 24, maintaining the position of the limiting plate 30 and ensuring the turntable 28 can rotate normally. The limiting block prevents the turntable 28 from automatically returning to its original position after being activated by the turn signal lever 26.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steering wheel with corner detection function, characterized in that: The steering wheel includes a steering wheel body (1), with a connecting column (2) 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), and 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 on one side of the second gear (5), and a second rack (8) is meshed on one side of the third gear (7). The second gear (5) and the third gear (7) have the same diameter but differ by one tooth. The diameter of the first gear (4) is greater than the diameters of the second gear (5) and the third gear (7). A sleeve (9) is rotatably connected to one side of the strip (8). A plug rod (10) is slidably connected to the inner cavity of the sleeve (9). A first connecting shaft (11) is fixedly connected to one end of the plug rod (10). The plug rod (10) is rotatably connected to the first rack (6) through the first connecting shaft (11). A fourth gear (12) is fixedly connected to one end of the first connecting shaft (11). An angle sensor (17) is rotatably connected to one end of the fourth gear (12). The second gear (5) and the third gear (7) are rotatably connected to the steering wheel body (1) and the connecting column (2). The first rack (6) and the second rack (8) are slidably connected to the steering wheel body (1).

2. A steering wheel with corner detection function according to claim 1, characterized in that: When the steering wheel body (1) is in a horizontal position, the first rack (6) and the second rack (8) are located at the same horizontal line at both ends. 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 insert (10) are perpendicular to the second rack (8) and the first rack (6).

3. A steering wheel with corner detection function according to claim 1, characterized in that: A pressure sensor (31) is fixedly connected to the inner cavity of the sleeve (9). When the steering wheel body (1) is in a horizontal position, the insert (10) is in contact with the pressure sensor (31).

4. A steering wheel with corner detection function according to claim 1, characterized in that: The steering wheel body (1) is provided with a dial (16) at the top. The inner wall of the dial (16) is provided with scale blocks at equal intervals in a ring. The dial (16) is provided with left and right corner display screens on both sides. The fourth gear (12) is meshed with a fifth gear (13) on one side. The middle of the fifth gear (13) is fixedly connected to a second connecting shaft (14). One end of the second connecting shaft (14) passes through the steering wheel body (1) and into the dial (16). The end of the second connecting shaft (14) that passes through the dial (16) is fixedly connected to a pointer (15).

5. A steering wheel with corner 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). 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 movable column (19). A second connecting plate (24) is rotatably connected to the upper end of the second rotating plate (23). Limiting plates (30) are rotatably connected to both sides of one end of the second connecting plate (24). One end of the steering wheel body (1) is rotatably connected to a third connecting shaft (27). A turn signal lever (26) is fixedly connected to the middle of the third connecting shaft (27). Both ends of the turn signal lever (26) are fixedly connected to connecting ropes (25). The two connecting ropes (25) pass through the steering wheel body (1) and are fixedly connected to the two ends of the first rotating plate (21). A turntable (28) is fixedly connected to the lower end of the third connecting shaft (27). Ratchet blocks (29) are fixedly connected to both sides of the outer wall of the turntable (28). The two ratchet blocks (29) are respectively engaged with the two limiting plates (30).

6. A steering wheel with corner 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 blocks (29) include two toothed blocks. The second connecting plate (24) is slidably connected to the connecting post (2).

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

8. A steering wheel with corner 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). The connecting frame (20) and the extrusion plate (22) are both located in the middle of the first rotating plate (21).

9. A steering wheel with corner detection function according to claim 5, characterized in that: The turn signal lever (26) includes 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 (27) is located in the middle of the arc-shaped plate. The third connecting shaft (27) is rotatably connected to the arc-shaped plate.

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