Torsion rod spring control device

Abstract

The invention provides a torsion bar spring control device, and belongs to the technical field of automobile damping. The problem that the torque of rotation of the torsion bar spring cannot be detected in the prior art is solved. The torsion bar spring control device comprises a torsion bar spring and a suspension swing arm, one end of the torsion bar spring is connected with a vehicle body, the other end of the torsion bar spring is connected with a torque sensor, the end, away from the torsion bar spring, of the torque sensor is connected with the suspension swing arm, the torsion bar spring is further provided with a control mechanism, and the control mechanism is connected with the suspension swing arm. And the control mechanism is used for controlling the torsion rod spring to rotate. The device has the advantages that the torque of the torsion rod spring can be monitored in real time, and meanwhile the torsion rod spring is controlled.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle shock absorption, and particularly relates to a torsion bar spring control device. Background Art

[0002] As an elastic element, the torsion bar spring is widely used in the suspension of modern vehicles, and is adopted in sedans, trucks and off-road vehicles. Compared with leaf springs, the torsion bar spring has a series of advantages: the torsion bar spring has a high energy storage per unit mass, so the vehicle mass can be reduced and materials can be saved; and because the torsion bar spring is fixed on the vehicle frame, the unsprung mass is reduced, which is beneficial to improving the ride comfort of the vehicle; when applied to the front suspension of a front-wheel drive vehicle, the torsion bar spring can be longitudinally arranged to leave space for the swing half shaft of the front drive axle.

[0003] The existing ones lack the ability to detect the magnitude of the torque of the torsion bar spring rotation. When the torsion bar spring of the vehicle is in a large torque state for a long time, it is easy to cause damage to the torsion bar spring. Secondly, it will also affect the components connected thereto, such as the swing arm, the suspension device and the control system, etc., and at the same time affect the handling and stability of the vehicle. Summary of the Invention

[0004] The purpose of the present invention is to provide a torsion bar spring control device for the above problems existing in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions: a torsion bar spring control device, characterized in that it includes a torsion bar spring and a suspension swing arm. One end of the torsion bar spring is connected to the vehicle body, and the other end of the torsion bar spring is connected with a torque sensor. The end of the torque sensor far away from the torsion bar spring is connected to the suspension swing arm. A control mechanism is also arranged on the torsion bar spring, and the control mechanism is used to control the rotation of the torsion bar spring.

[0006] The working principle of the present invention: during installation, one end of the torsion bar spring is connected to the vehicle body, and the other end is connected to the torque sensor, and the torque sensor is connected to the suspension swing arm. When it is found that the torque is small for a long time during driving, the rotation of the torsion bar spring is controlled by the control mechanism, so that the stiffness of the torsion bar spring is reduced to improve the driving smoothness. When it is found that the torque is large for a long time during driving, the rotation of the torsion bar spring is controlled by the control mechanism, so that the stiffness of the torsion bar spring becomes larger, making the driving in a relatively stable state and preventing the torsion bar spring from fatigue.

[0007] In the above torsion bar spring control device, a first coupling is arranged between the torsion bar spring and the torque sensor, and a second coupling is arranged between the torque sensor and the suspension swing arm.

[0008] In the above-mentioned torsion bar spring control device, the first coupling and the second coupling are both provided with an input shaft and an output shaft, the output shaft of the first coupling is connected to the torsion bar spring, the output shaft of the second coupling is connected to the torque sensor, and the suspension swing arm is provided with a protrusion connected to the output shaft of the second coupling.

[0009] In the above-mentioned torsion bar spring control device, the control mechanism includes a pushing mechanism and a limiting mechanism, the limiting mechanism includes a first limiting plate and a first limiting tooth, the pushing mechanism is used to push the first limiting plate to move forward and backward, and the first limiting plate is provided with a first tooth groove for the first limiting tooth to be engaged, and the first limiting tooth is fixedly provided on the torsion bar spring.

[0010] In the above-mentioned torsion bar spring control device, the first limit plate is provided with a connecting rod, and at least one second limit plate is provided on the connecting rod. The torsion bar spring is provided with at least one second limit tooth, and the second limit plate is provided with a second tooth groove for the second limit tooth to be engaged.

[0011] In the above-mentioned torsion bar spring control device, the thickness of the first limiting plate is greater than the thickness of the second limiting plate.

[0012] In the above-mentioned torsion bar spring control device, a limiting groove is provided on the connecting rod, a clearance hole for the connecting rod to pass through is provided on the second limiting plate, a limiting protrusion is provided at the clearance hole, and the limiting protrusion is used to be inserted into the limiting groove.

[0013] In the above-mentioned torsion bar spring control device, the second limiting plate includes a first mounting plate and a second mounting plate, and the first mounting plate and the second mounting plate are both provided with connecting grooves and connecting protrusions, and the connecting grooves and the connecting protrusions are both provided with multiple threaded holes, and the first mounting plate and the second mounting plate are fixedly connected by threaded members passing through the threaded holes.

[0014] In the above-mentioned torsion bar spring control device, the control mechanism is also provided with a control shell, which is used to be installed on the vehicle body, and a track is arranged inside the control shell. The first limit plate and the second limit plate are both provided with a slider, and the slider can move along the length direction of the track.

[0015] In the above-mentioned torsion bar spring control device, the pushing mechanism includes an electric telescopic rod and a connecting plate, the connecting plate is arranged on the vehicle body, the electric telescopic rod is arranged on the connecting plate, and the electric telescopic rod is connected to the first limiting plate.

[0016] Compared with the prior art, the present invention has the advantage of being able to adjust the stiffness of the torsion bar spring according to the torque of the torsion bar spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the control mechanism of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the first mounting plate of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the second mounting plate of the present invention.

[0021] In the figure, 1. torsion bar spring; 2. suspension swing arm; 3. torque sensor; 4. control mechanism; 5. first coupling; 6. second coupling; 7. convex block; 8. pushing mechanism; 9. limiting mechanism; 10. first limiting plate; 11. first limiting tooth; 12. first tooth groove; 13. connecting rod; 14. second limiting plate; 15. second limiting tooth; 16. second tooth groove; 17. limiting groove; 18. relief hole; 19. limiting convex block; 20. first mounting plate; 21. second mounting plate; 22. connecting groove; 23. connecting convex block; 24. threaded hole; 25. control housing; 26. track; 27. slider; 28. electric telescopic rod; 29. connecting plate. Detailed implementation manners

[0022] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0023] As Figures 1 - 4 shown, this torsion bar spring 1 control device includes a torsion bar spring 1 and a suspension swing arm 2. One end of the torsion bar spring 1 is connected to the vehicle body, and the other end of the torsion bar spring 1 is connected to a torque sensor 3. The end of the torque sensor 3 far from the torsion bar spring 1 is connected to the shown suspension swing arm 2. A control mechanism 4 is further provided on the torsion bar spring 1, and the control mechanism 4 is used to control the rotation of the torsion bar spring 1.

[0024] In further detail, a first coupling 5 is provided between the torsion bar spring 1 and the torque sensor 3, and a second coupling 6 is provided between the torque sensor 3 and the suspension swing arm 2. The couplings are used to transmit rotation and torque, and at the same time can solve problems such as axis misalignment and abnormal torsion of the torsion bar spring 1, increasing the overall stability.

[0025] In further detail, both the first coupling 5 and the second coupling 6 are provided with an input shaft and an output shaft. The output shaft of the first coupling 5 is connected to the torsion bar spring 1, and the output shaft of the second coupling 6 is connected to the torque sensor 3. A convex block 7 for connecting the output shaft of the second coupling 6 is provided on the suspension swing arm 2. This setting is used to ensure that the torque sensor 3 can detect the torque of the torsion bar spring 1.

[0026] To further explain, the control mechanism 4 includes a pushing mechanism 8 and a limiting mechanism 9, the limiting mechanism 9 includes a first limiting plate 10 and a first limiting tooth 11, the pushing mechanism 8 is used to push the first limiting plate 10 to move forward and backward, the first limiting plate 10 is provided with a first tooth groove 12 for the first limiting tooth 11 to be engaged, the first limiting tooth 11 is fixedly provided on the torsion bar spring 1, when the first limiting tooth 11 is engaged in the first tooth groove 12, the torsion bar spring 1 located on the side of the first tooth groove 12 away from the suspension arm 2 cannot rotate, and only the part of the torsion bar spring 1 located between the first limiting plate 10 and the torque sensor 3 rotates, when the first limiting tooth 11 is not located in the first tooth groove 12, the entire torsion bar spring 1 is in a stressed state and can be used normally.

[0027] To further elaborate, the first limit plate 10 is provided with a connecting rod 13, at least one second limit plate 14 is provided on the connecting rod 13, at least one second limit tooth 15 is provided on the torsion bar spring 1, and the second limit plate 14 is provided with a second tooth groove 16 for the second limit tooth 15 to be engaged. There can be multiple or only one second limit tooth 15, and multiple limit teeth 15 are provided so that multiple levels can be adjusted. The second limit plates 14 are all arranged on the side of the first limit plate 10 close to the torque sensor 3.

[0028] To further explain, the thickness of the first limit plate 10 is greater than that of the second limit plate 14. When the second limit tooth 15 is inserted into the second tooth groove 16, the first limit tooth 11 is still located in the first tooth groove 12, so as to further limit the torsion bar spring 1. When there are multiple second limit plates 14, the thickness of the multiple second limit plates 14 gradually decreases from the order away from the first limit plate 10.

[0029] To elaborate further, a limiting groove 17 is provided on the connecting rod 13, and a clearance hole 18 for the connecting rod 13 to pass through is provided on the second limiting plate 14. A limiting protrusion 19 is provided at the clearance hole 18, and the limiting protrusion 19 is used to be inserted into the limiting groove 17. This setting is used to ensure that the second limiting plate 14 can be stably installed on the connecting rod 13 without deviation, and ensure that it can cooperate with the pushing mechanism 8 to complete the control of the torsion bar spring 1.

[0030] To further elaborate, the second limiting plate 14 includes a first mounting plate 20 and a second mounting plate 21, and the first mounting plate 20 and the second mounting plate 21 are both provided with connecting grooves 22 and connecting protrusions 237, and a plurality of threaded holes 24 are provided on the connecting grooves 22 and the connecting protrusions 237. The first mounting plate 20 and the second mounting plate 21 are fixedly connected by threaded members passing through the threaded holes 24, and the second tooth grooves 16 and the clearance holes 18 are both provided at the junction of the first mounting plate 20 and the second mounting plate 21. This setting is used to facilitate subsequent maintenance and installation of the second limiting plate 14.

[0031] Specifically, the control mechanism 4 is further provided with a control housing 25 for mounting on the vehicle body. A track 26 is provided inside the control housing 25. Sliders 27 are provided on both the first limiting plate 10 and the second limiting plate 14. The sliders 27 can move along the length direction of the track 26. This setting is used to enhance the stability of the operation of the control mechanism 4.

[0032] Specifically, the pushing mechanism 8 includes an electric telescopic rod 28 and a connecting plate 29. The connecting plate 29 is arranged on the vehicle body, and the electric telescopic rod 28 is arranged on the connecting plate 29. The electric telescopic rod 28 is connected to the first limiting plate 10. When the electric telescopic rod 28 extends, it will drive the first limiting plate 10 to move. Also, since the connecting rod 13 is arranged on the first limiting plate 10 and the second limiting plate 14 is arranged on the connecting rod 13, the second limiting plate 14 will also be driven to move simultaneously.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0034] Although a large number of terms are used herein, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A torsion bar spring control device, characterized in that, The invention comprises a torsion bar spring (1) and a suspension swing arm (2), wherein one end of the torsion bar spring (1) is connected to a vehicle body, the other end of the torsion bar spring (1) is connected to a torque sensor (3), the end of the torque sensor (3) away from the torsion bar spring (1) is connected to the suspension swing arm (2), and a control mechanism (4) is also arranged on the torsion bar spring (1), and the control mechanism (4) is used to control the rotation of the torsion bar spring (1).

2. The torsion bar spring control device according to claim 1, characterized in that, A first coupling (5) is provided between the torsion bar spring (1) and the torque sensor (3), and a second coupling (6) is provided between the torque sensor (3) and the suspension swing arm (2).

3. The torsion bar spring control device according to claim 2, characterized in that, The first coupling (5) and the second coupling (6) are both provided with an input shaft and an output shaft, the output shaft of the first coupling (5) is connected to the torsion bar spring (1), the output shaft of the second coupling (6) is connected to the torque sensor (3), and the suspension swing arm (2) is provided with a protrusion (7) connected to the output shaft of the second coupling (6).

4. A torsion bar spring control device according to claim 1, characterized in that, The control mechanism (4) comprises a pushing mechanism (8) and a limiting mechanism (9), the limiting mechanism (9) comprising a first limiting plate (10) and a first limiting tooth (11), the pushing mechanism (8) is used to push the first limiting plate (10) to move forward and backward, the first limiting plate (10) is provided with a first tooth groove (12) for the first limiting tooth (11) to be inserted, and the first limiting tooth (11) is fixedly arranged on the torsion bar spring (1).

5. A torsion bar spring control device according to claim 4, characterized in that, The first limiting plate (10) is provided with a connecting rod (13), the connecting rod (13) is provided with at least one second limiting plate (14), the torsion bar spring (1) is provided with at least one second limiting tooth (15), and the second limiting plate (14) is provided with a second tooth groove (16) for the second limiting tooth (15) to be engaged.

6. The torsion bar spring control device according to claim 5, characterized in that, The thickness of the first limiting plate (10) is greater than the thickness of the second limiting plate (14).

7. A torsion bar spring control device according to claim 6, characterized in that, The connecting rod (13) is provided with a limiting groove (17), the second limiting plate (14) is provided with a clearance hole (18) for the connecting rod (13) to pass through, and a limiting protrusion (19) is provided at the clearance hole (18), and the limiting protrusion (19) is used to be inserted into the limiting groove (17).

8. A torsion bar spring control device according to claim 7, characterized in that, The second limiting plate (14) comprises a first mounting plate (20) and a second mounting plate (21); the first mounting plate (20) and the second mounting plate (21) are both provided with a connecting groove (22) and a connecting protrusion (23); the connecting groove (22) and the connecting protrusion (23) are both provided with a plurality of threaded holes (24); the first mounting plate (20) and the second mounting plate (21) are fixedly connected by means of a threaded member passing through the threaded holes (24).

9. The torsion bar spring control device according to claim 4, characterized in that, The control mechanism (4) is further provided with a control housing (25) for mounting on the vehicle body. A track (26) is provided inside the control housing (25). Sliders (27) are provided on both the first limiting plate (10) and the second limiting plate (14), and the sliders (27) can move along the length direction of the track (26).

10. A torsion bar spring control device according to claim 4, characterized in that, The pushing mechanism (8) includes an electric telescopic rod (28) and a connecting plate (29). The connecting plate (29) is arranged on the vehicle body, the electric telescopic rod (28) is arranged on the connecting plate (29), and the electric telescopic rod (28) is connected to the first limiting plate (10).

Images