Steering system adjusting mechanism

Abstract

The utility model relates to the technical field of steering systems, and discloses a steering system adjusting mechanism which comprises a clamping assembly, an adjusting assembly and a driving assembly. The linear module drives the clamping assembly and the input shaft to move front and back, and the axial gap between the input shaft and the output shaft is adjusted. The rotary driving piece drives the clamping assembly and the input shaft to rotate; the angle sensor assembly obtains a rotation angle; when the rotation driving piece drives the input shaft to rotate forwards to a first set torque, the angle sensor assembly obtains a forward rotation angle; when the rotation driving part drives the input shaft to reversely rotate to a second set torque, the angle sensor assembly obtains a reverse rotation angle; the rotation driving part drives the input shaft to rotate to an intermediate angle value of the sum of the forward rotation angle and the reverse rotation angle. The axial gap between the input shaft and the output shaft is adjusted through the linear module, and the gap between the flat square of the input shaft and the flat groove of the output shaft is adjusted to an intermediate value through the steering system adjusting mechanism, so that the labor intensity is reduced, and the productivity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steering system technical field, concretely relates to a steering system adjusting mechanism. BACKGROUND

[0002] As Figures 1 to 4 The utility model relates to a steering system technical field, concretely relates to a steering system adjusting mechanism. BACKGROUND

[0002] As Figures 1 to 4 The utility model relates to a steering system technical field, concretily relates to a steering system adjusting mechanism. The steering system adjusting mechanism includes input shaft, output shaft and the adjusting mechanism, the input shaft is fixedly connected with the adjusting mechanism, the output shaft is fixedly connected with the adjusting mechanism, the adjusting mechanism is suitable for adjusting the axial clearance between the input shaft and the output shaft and the peripheral clearance between the flat square and the flat groove, the adjusting mechanism includes the clamping assembly, the linear module, the rotary drive piece and the angle sensor assembly, the clamping assembly is suitable for clamping the input shaft, the linear module is suitable for driving the clamping assembly to move forward and backward, and the rotary drive piece is suitable for driving the clamping assembly to rotate, and the angle sensor assembly is suitable for obtaining the rotation angle of the clamping assembly and the rotation angle of the input shaft. SUMMARY

[0003] Therefore, the utility model provides a steering system adjusting mechanism to solve the problem of great manual labor intensity and low production efficiency when adjusting the axial clearance between the input shaft and the output shaft and the peripheral clearance between the flat square and the flat groove.

[0004] The utility model provides a steering system adjusting mechanism, which includes:

[0005] The clamping assembly is suitable for clamping the input shaft of the steering system, the flat square provided on the input shaft cooperates with the flat groove provided on the output shaft of the steering system, and the output shaft is fixedly arranged.

[0006] The linear module is suitable for driving the clamping assembly to move forward and backward, and in turn drives the input shaft to move forward and backward, so as to adjust the axial clearance between the input shaft and the output shaft.

[0007] The rotary drive piece is connected with the clamping assembly, and is suitable for driving the clamping assembly to rotate, and in turn drives the input shaft to rotate.

[0008] The angle sensor assembly is connected with the clamping assembly, and is suitable for obtaining the rotation angle of the clamping assembly, and in turn obtaining the rotation angle of the input shaft.

[0009] The steering system adjusting mechanism has a first state in which the angle sensor assembly obtains a positive rotation angle when the rotary driving member drives the input shaft to rotate positively to a first set torque; a second state in which the angle sensor assembly obtains a negative rotation angle when the rotary driving member drives the input shaft to rotate negatively to a second set torque; and a third state in which the rotary driving member drives the input shaft to rotate to an intermediate angle value between the positive rotation angle and the negative rotation angle. Advantage: the application adopts the above technical solution, conveniently adjusts the axial gap between the input shaft and the output shaft through the linear module, and changes between the first state, the second state and the third state in turn through the steering system adjusting mechanism, adjusts the gap between the flat side of the input shaft and the flat groove of the output shaft to an intermediate value, makes the peripheral gap between the flat side and the flat groove uniform, realizes the automation of the centering operation, significantly reduces the labor intensity and significantly improves the production efficiency.

[0010] Optionally, further comprising:

[0011] A clamping assembly is arranged on the input shaft, the clamping assembly is suitable for clamping the input shaft and the output shaft, and the clamping assembly is suitable for adjusting the axial gap between the input shaft and the output shaft.

[0012] The steering system adjusting mechanism is suitable for moving the input shaft forward by the linear module after the clamping assembly clamps the input shaft, approaching the output shaft, moving the input shaft backward by the linear module after the clamping assembly clamps the input shaft after the clamping assembly clamps the input shaft, and adjusting the axial gap between the input shaft and the output shaft to a set axial gap. Advantage: the application adopts the above technical solution, conveniently, stably and accurately adjusts the axial gap between the input shaft and the output shaft to the set axial gap.

[0013] Optionally, the clamping assembly comprises:

[0014] A plurality of clamping jaws are suitable for clamping the input shaft.

[0015] A push plate is close to an end of the input shaft away from the flat side, and the push plate is suitable for pushing the input shaft forward.

[0016] Optionally, the linear module comprises:

[0017] A driving member is suitable for moving the clamping assembly forward and backward through a slide rail and a slide block structure.

[0018] Optionally, the angle sensor assembly comprises:

[0019] An angle in-situ sensor is suitable for determining an initial angle line of the input shaft rotation.

[0020] An angle sensor is adapted to acquire an angle of the input shaft after rotation relative to an initial angle line.

[0021] Optionally, further comprising:

[0022] A torque sensor is arranged between the rotary drive and the clamping assembly; the torque sensor is adapted to acquire a first set torque, and the steering system adjusting mechanism is in a first state; the torque sensor is adapted to acquire a second set torque, and the steering system adjusting mechanism is in a second state.

[0023] Optionally, the clamping assembly is connected with the angle sensor through a rotating shaft, the angle sensor is connected with the torque sensor through a first coupling, and the torque sensor is connected with the output end of the rotary drive through a second coupling.

[0024] Optionally, further comprising:

[0025] A torque limiter is arranged between the rotary drive and the clamping assembly; the torque limiter is adapted to acquire a first set torque, and the steering system adjusting mechanism is in a first state; the torque limiter is adapted to acquire a second set torque, and the steering system adjusting mechanism is in a second state.

[0026] Optionally, the clamping assembly is connected with the torque limiter through a rotating shaft, the torque limiter is connected with the angle sensor through an electromagnetic clutch, and the output end of the rotary drive is connected with the torque limiter through a transmission structure.

[0027] Optionally, the rotating shaft is installed in a bearing seat through a bearing, and the output end of the rotary drive is installed in the bearing seat through a bearing. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1This is a cross-sectional structural diagram of an existing steering system;

[0030] Figure 2 This is a cross-sectional schematic diagram of the axial clearance between the existing input and output shafts.

[0031] Figure 3 A schematic cross-sectional view of the existing input shaft and torsion bar connection;

[0032] Figure 4 A cross-sectional schematic diagram of the existing input and output shaft mating structure;

[0033] Figure 5 This is a three-dimensional structural diagram of the steering system adjustment mechanism provided in Embodiment 1 of this utility model;

[0034] Figure 6 This is a three-dimensional structural diagram of the steering system adjustment mechanism provided in Embodiment 2 of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Pin; 2. Input shaft; 3. Output shaft; 4. Torque bar; 5. Linear module; 6. Rotary drive component; 7. Clamping sensor; 8. Gripper; 9. Push plate; 10. Drive component; 11. Angle in-situ sensor; 12. Angle sensor; 13. Torque sensor; 14. First coupling; 15. Second coupling; 16. Torque limiter; 17. Electromagnetic clutch; 18. Bearing housing. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Implementation Method 1

[0039] like Figure 5 One specific embodiment of the steering system adjustment mechanism shown includes: a clamping assembly, a linear module 5, a rotary drive component 6, and an angle sensor assembly. The linear module 5 can also be referred to as a forward / reverse module. The rotary drive component 6 can be a rotary drive motor. The steering system adjustment mechanism described in this application enables centering operations before the installation of the pin 1, and can be flexibly inserted into the automated production line of the steering system to achieve fully automated production, reduce manual labor intensity, accelerate production cycle time, and increase capacity.

[0040] The clamping assembly is adapted to clamp the input shaft 2 of the steering system; with reference to Figure 1 and Figure 4 The flat square of the input shaft 2 cooperates with the flat groove of the output shaft 3 of the steering system, and the output shaft 3 is fixedly arranged, specifically, the output shaft 3 can be clamped and fixed; the input shaft 2 and the output shaft 3 are coaxially arranged. The clamping assembly is arranged on the linear module 5, the linear module 5 is adapted to drive the clamping assembly to move forward and backward, thereby driving the input shaft 2 to move forward and backward, so as to adjust the axial gap between the input shaft 2 and the output shaft 3, the axial gap is shown in Figure 2 , Figure 5 The arrow in the middle of the figure indicates the direction of forward and backward movement. The rotary drive 6 is connected with the clamping assembly, and the rotary drive 6 is adapted to drive the clamping assembly to rotate, thereby driving the input shaft 2 to rotate, Figure 5 The arrow on the right side of the figure indicates the direction of rotation. The angle sensor assembly is connected with the clamping assembly; the angle sensor assembly is adapted to obtain the rotation angle of the clamping assembly, thereby obtaining the rotation angle of the input shaft 2.

[0041] The steering system adjusting mechanism has a first state that the angle sensor assembly obtains a positive rotation angle when the rotary drive 6 drives the input shaft 2 to rotate positively to a first set torque; and a second state that the angle sensor assembly obtains a negative rotation angle when the rotary drive 6 drives the input shaft 2 to rotate reversely to a second set torque; and a third state that the rotary drive 6 drives the input shaft 2 to rotate to an intermediate angle value between the positive rotation angle and the negative rotation angle. After the steering system sequentially passes through the first state, the second state and the third state, and then the pin shaft 1 is installed, the peripheral gap between the flat square and the flat groove is uniform, so that the steering system is in the best assembly state. With reference to Figure 3 , the difference between the pressing depths of the two ends of the pin shaft 1 is not greater than 0.3mm. Specifically, the positive rotation angle is +6.5 degrees, and the negative rotation angle is -6.5 degrees.

[0042] Further, the steering system adjusting mechanism described in the present application further comprises a tightening sensor 7. The tightening sensor 7 is arranged on the clamping assembly, and the tightening sensor 7 is adapted to issue a tightening in place signal when the stepped surface near one end of the flat square of the input shaft 2 abuts against the end surface of the flat groove of the output shaft 3. The steering system adjusting mechanism is adapted to move the input shaft 2 forward by the linear module 5 after the clamping assembly clamps the input shaft 2, and the input shaft 2 is close to the output shaft 3, and after the tightening sensor 7 issues the tightening in place signal, the linear module 5 drives the input shaft 2 to move backward until the axial gap between the input shaft 2 and the output shaft 3 reaches the set axial gap. The set axial gap value is mm.

[0043] Specifically, the clamping assembly comprises a plurality of clamping jaws 8 and a push plate 9. The plurality of clamping jaws 8 are adapted to clamp the input shaft 2, and the clamping jaws 8 can be three evenly distributed. The push plate 9 is close to the end of the input shaft 2 away from the flat square, and the push plate 9 is adapted to push the input shaft 2 forward. The push plate 9 can be an elastic push plate.

[0044] Specifically, the linear module 5 comprises a driving member 10, which is adapted to drive the clamping assembly to move forward and backward through a slide rail and slide block structure. The clamping assembly can be installed on the slide block, the slide rail is fixed, the slide block is connected with the driving member 10, the driving member 10 drives the slide block to move, and then drives the clamping assembly to move forward and backward. The driving member 10 can be a driving motor.

[0045] Specifically, the angle sensor assembly comprises an angle original position sensor 11 and an angle sensor 12. The angle original position sensor 11 is adapted to determine the initial angle line of the rotation of the input shaft 2. The angle sensor 12 is adapted to obtain the angle of the input shaft 2 after rotation relative to the initial angle line.

[0046] Further, the steering system adjusting mechanism described in the present application further comprises a torque sensor 13. The torque sensor 13 is arranged between the rotary driving member 6 and the clamping assembly; the torque sensor 13 is adapted to be in a first state when a first set torque is obtained, and the torque sensor 13 is adapted to be in a second state when a second set torque is obtained. The torque sensor 13 can output an electrical signal to a programmable controller, and the torque size can be set by the programmable controller.

[0047] The clamping assembly is connected with the angle sensor 12 through a rotating shaft, the angle sensor 12 is connected with the torque sensor 13 through a first coupling 14, and the torque sensor 13 is connected with the output end of the rotary driving member 6 through a second coupling 15. Specifically, the rotating shaft is installed in a bearing seat 18 through a bearing, and the output end of the rotary driving member 6 is installed in the bearing seat 18 through a bearing.

[0048] Embodiment two

[0049] As Figure 6As shown, the torque sensor 13 in the first embodiment is replaced by a torque limiter 16, which is arranged between the rotary drive 6 and the clamping assembly; the torque limiter 16 is adapted to reach a first set torque, the steering system adjusting mechanism is in a first state, the torque limiter 16 is adapted to reach a second set torque, the steering system adjusting mechanism is in a second state. The torque limiter 16 is a purely mechanical structure, the torque size is set by manual adjustment, and no output electric signal is needed.

[0050] The clamping assembly is connected with the torque limiter 16 through a rotating shaft, the torque limiter 16 is connected with the angle sensor 12 through an electromagnetic clutch 17; the output end of the rotary drive 6 is connected with the torque limiter 16 through a transmission structure. The transmission structure can be a synchronous toothed belt transmission structure.

[0051] The other technical solutions are the same as those of the first embodiment.

[0052] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A steering system adjustment mechanism characterized by, The application relates to a steering system adjusting mechanism. The application comprises: a clamping assembly adapted to clamp an input shaft (2) of a steering system, the input shaft (2) being provided with a flat square matched with a flat groove provided on an output shaft (3) of the steering system, the output shaft (3) being fixedly arranged; a linear module (5), the clamping assembly being arranged on the linear module (5), the linear module (5) being adapted to drive the clamping assembly to move forward and backward, thereby driving the input shaft (2) to move forward and backward, so as to adjust the axial clearance between the input shaft (2) and the output shaft (3); a rotary driving member (6) connected with the clamping assembly, the rotary driving member (6) being adapted to drive the clamping assembly to rotate, thereby driving the input shaft (2) to rotate; an angle sensor assembly connected with the clamping assembly, the angle sensor assembly being adapted to obtain the rotation angle of the clamping assembly, thereby obtaining the rotation angle of the input shaft (2); 2. The steering system adjustment mechanism of claim 1, wherein, the steering system adjusting mechanism has a first state in which the angle sensor assembly obtains a positive rotation angle when the rotary driving member (6) drives the input shaft (2) to rotate positively to a first set torque, a second state in which the angle sensor assembly obtains a negative rotation angle when the rotary driving member (6) drives the input shaft (2) to rotate negatively to a second set torque, and a third state in which the rotary driving member (6) drives the input shaft (2) to rotate to an intermediate angle value between the positive rotation angle and the negative rotation angle. The application further comprises: a tightening sensor (7) arranged on the clamping assembly, the tightening sensor (7) being adapted to send a tightening in-place signal when a stepped surface at one end of the flat square of the input shaft (2) abuts against an end surface at one end of the flat groove of the output shaft (3); 3. The steering system adjustment mechanism of claim 1, wherein, the steering system adjusting mechanism is adapted to drive the input shaft (2) to move forward to the output shaft (3) after the clamping assembly clamps the input shaft (2), and to drive the input shaft (2) to move backward after the tightening sensor (7) sends the tightening in-place signal, until the axial clearance between the input shaft (2) and the output shaft (3) reaches a set axial clearance. The clamping assembly comprises: a plurality of clamping jaws (8) adapted to clamp the input shaft (2); 4. The steering system adjustment mechanism of claim 1, wherein, a push plate (9) abutting against one end of the input shaft (2) away from the flat square, the push plate (9) being adapted to push the input shaft (2) forward. The linear module (5) comprises:

5. The steering system adjustment mechanism of any one of claims 1-4, wherein, a driving member (10) adapted to drive the clamping assembly to move forward and backward through a slide rail and slide block structure. The angle sensor assembly comprises: an angle in-situ sensor (11) adapted to determine an initial angle line of the input shaft (2) rotation; 6. The steering system adjustment mechanism of claim 5, wherein, an angle sensor (12) adapted to obtain the angle of the input shaft (2) after the input shaft (2) rotates relative to the initial angle line. The application further comprises: a torque sensor (13) arranged between the rotary driving member (6) and the clamping assembly; the torque sensor (13) is adapted to obtain the first set torque when the steering system adjusting mechanism is in the first state, and the torque sensor (13) is adapted to obtain the second set torque when the steering system adjusting mechanism is in the second state.

7. The steering system adjustment mechanism according to claim 6, characterized in that the clamping assembly is connected to the angle sensor (12) through a rotating shaft, the angle sensor (12) is connected to the torque sensor (13) through a first coupling (14); the torque sensor (13) is connected to the output end of the rotary drive (6) through a second coupling (15).

8. The steering system adjustment mechanism of claim 5, wherein, Further comprising: a torque limiter (16) arranged between the rotary drive (6) and the clamping assembly; the torque limiter (16) is adapted to be in a first state when a first set torque is reached, the torque limiter (16) is adapted to be in a second state when a second set torque is reached.

9. The steering system adjustment mechanism according to claim 8, characterized in that the clamping assembly is connected to the torque limiter (16) through a rotating shaft, the torque limiter (16) is connected to the angle sensor (12) through an electromagnetic clutch (17); the output end of the rotary drive (6) is connected to the torque limiter (16) through a transmission structure.

10. The steering system adjustment mechanism according to claim 7 or 9, characterized in that the rotating shaft is installed in a bearing seat (18) through a bearing; the output end of the rotary drive (6) is installed in the bearing seat (18) through a bearing.

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