Steering column locking device and automobile

Abstract

The invention provides a steering column locking device and an automobile, and relates to the technical field of automobile steering control. The steering column locking device comprises a base, a mounting frame, a supporting pipe, a steering pipe sleeve and a steering column. The electric telescopic rod drives the second rotating shaft through the crank, locking and loosening between the supporting pipe and the mounting frame and between the supporting pipe and the steering pipe sleeve are synchronously achieved, the electric telescopic rod has a self-locking function, and failure caused by vibration in the locking state is avoided; and a first reinforcing rib and a second reinforcing rib are arranged on the inner side wall of the mounting frame, so that the structural strength of the mounting frame is improved, the locking state failure caused by deformation of the mounting frame under long-time pushing of the two groups of push plates is avoided, and the use safety is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile steering control, in particular to a steering column locking device and an automobile. Background Art

[0002] The automobile steering column and adjustment mechanism assembly are important components in the steering system. Their function is to transfer torque to the steering gear to control the direction of movement of the automobile. At the same time, the front and rear and up and down positions of the steering wheel can be adjusted to increase driving comfort.

[0003] The steering column and adjustment mechanism assembly that are currently widely used mostly use bolt pre-tightening, and the static friction generated clamps the column tube through the bracket, so that the mechanism is locked. This structure is widely used due to its simple manufacturing process and stable product performance, but it is inconvenient to operate. The driver must use his right hand to open the locking handle before adjusting the angle and height of the steering wheel. In addition, when the steering column and adjustment mechanism assembly of a traditional car are locked, the static friction generated by the pre-tightening force of the upper bolt is used to lock the mechanism. The vibration caused by the driving of the vehicle can also cause the inner side of the bracket and the contact surface of the column tube to produce a slight reciprocating displacement, causing the contact parts to wear. Over time, the wear accumulates, and eventually causes the handle locking stroke to change. In addition, since the handle assembly must be used, the mechanism occupies more space, and the interior parts such as the car dashboard are also required to avoid it, which makes the spatial structure of the surrounding components complicated and reduces the space utilization rate. To this end, there is a public technology on the market that proposes a new type of pneumatic automatic locking steering column and adjustment mechanism assembly, which includes a steering shaft, a steering column tube, a bracket, a cylinder and a camshaft assembly that realizes automatic locking. The steering shaft and the steering column tube are connected to form a steering column assembly, and the steering column assembly is fixedly mounted on the steering column bracket by upper and lower bolts, and the steering column bracket is fixed to the car body; the automatic locking cylinder and camshaft assembly constitute an adjustment mechanism, and the camshaft assembly includes a right outer camshaft, a left outer camshaft, a fork head and a central rotating shaft, and the air source interface is connected to an external air pressure source. When the air source switch is turned off, the adjustment mechanism is in a locked state, and when the air source is connected, the adjustment mechanism is in a loose state;

[0004] The above-mentioned public technology drives the cam to rotate by the action of the cylinder extending the shaft to achieve the purpose of locking the steering column, replacing the previous manual handle locking and not taking up much installation space. However, this technology also has significant disadvantages. First, this structure can only control the up and down movement of the steering column, but cannot adjust the extension length. Second, its cylinder is a single-stroke cylinder. When the air source switch is turned off, the cylinder piston is reset under the action of the internal spring, and the length is extended, pushing the shift fork to rotate around the axis of the central shaft. Since the head structure of the shift fork is concave, it is relatively displaced with the right outer camshaft and the left outer camshaft, thereby pushing the right outer camshaft and the left outer camshaft on both sides to move along the axis of the central shaft to both sides, and its two end surfaces are pressed Tighten to the inner wall of the steering column bracket, thereby completing the locking of the adjustment mechanism. Although a shift fork is provided to amplify the force of the cylinder, the cylinder is reset by a spring. The spring exerts force instantly after the air source is closed to push the shift fork to move, and there is a collision. The spring elastic force cannot provide sufficient clamping force, especially when the vehicle vibrates during driving, the spring may accidentally fail to lock due to vibration and retraction. The third disadvantage is that there is usually no air source for generating compressed air on family cars. The fourth disadvantage is that the structure of the steering column bracket is relatively thin. When the left and right camshafts are pressed against each other for a long time, it is easy to cause the steering column bracket to deform outward and cause locking failure.

[0005] In order to solve the above-mentioned drawbacks, it is necessary to further improve and optimize the structure of the automobile steering column locking device. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a steering column locking device and a car, which solve the problems that the steering column locking device provided by the prior art can only control the up and down movement of the steering column but cannot adjust the extension length, the problem that the spring has an unexpected failure in the locking state due to vibration retraction, the problem that a family car does not have an air source for generating compressed air, and the problem that the steering column bracket is easily deformed and causes locking failure.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steering column locking device, comprising a base, a mounting frame, a support tube, a steering tube sleeve, and a steering column, wherein the lower wall of the support tube and near the left end position are fixedly connected to a first rotating seat, the lower wall of the support tube and an end located away from the first rotating seat are fixedly connected to two groups of second rotating seats in a front-to-back distribution, the lower wall of the support tube and an opening are provided between the two groups of second rotating seats, a second rotating shaft is rotatably connected between the two groups of the second rotating seats, a rotating drive structure for driving the second rotating shaft to rotate is provided between the first rotating shaft and the second rotating shaft, a cam for tightening and loosening the steering tube sleeve to fix the axial position of the steering tube sleeve is fixedly connected to the outer wall of the second rotating shaft and located between the two groups of second rotating seats, the opposite sides of the two groups of the second rotating seats are fixedly connected to a fixing sleeve, and the opposite ends of the two groups of the fixing sleeves are fixedly connected The two wheels are fixedly connected with a baffle, and two ends of the second rotating shaft respectively pass through the two groups of second rotating seats and extend into the two groups of fixed sleeves respectively, and push rods are provided on the inner walls of the two groups of fixed sleeves, and the push rods are fixedly connected to the limiting plate on the side opposite to the second rotating shaft, and a transmission structure is provided between the limiting plate and the second rotating shaft, and a reset structure is provided between the limiting plate and the baffle, and a stop structure is provided between the push rod and the baffle, and the opposite ends of the two groups of push rods are fixedly connected with a group of push plates for tightening and loosening the inner side wall of the mounting frame to fix the upper and lower positions of the support tube, and the push plate and the cam are provided with a pressure detection structure for detecting contact pressure, and a wear-resistant structure is provided on the inner side wall of the mounting frame and at the front and rear opposite to the push plate, and a reinforcement structure is provided on the inner side wall of the mounting frame for strengthening the overall structural strength.

[0010] Preferably, the mounting frame is fixedly connected to the upper wall of the base, the support tube is rotatably connected to the inner wall of the mounting frame, the first rotating seat is rotatably connected to the inner wall of the mounting frame through a first rotating shaft, the support tube is rotatably connected to the inner wall of the mounting frame through the first rotating seat and the first rotating shaft, the steering tube sleeve is slidably connected to the inner wall of the support tube, the lower wall of the steering tube sleeve is provided with a first plane, the inner lower wall of the support tube is provided with a second plane matched with the first plane of the lower wall of the steering tube sleeve, the steering tube sleeve can only move axially between the first plane, the second plane and the support tube without radial rotation, the steering column is rotatably connected to the inner wall of the steering tube sleeve through a bearing, and the steering column and the steering tube sleeve can only rotate radially without axial movement.

[0011] Preferably, the rotation driving structure includes an electric telescopic rod and a crank, the electric telescopic rod being rotatably connected to the outer wall of the first rotating shaft, the crank being rotatably connected to the electric telescopic rod and one end of the first rotating shaft, and the end of the crank away from the electric telescopic rod being fixedly connected to the outer wall of the second rotating shaft. When the extension shaft of the electric telescopic rod is in a retracted state, the crank drives the second rotating shaft to rotate to a state where the cam is pressed against the first plane of the lower wall of the steering tube sleeve and the two groups of push plates are respectively pressed against the inner front wall and the inner rear wall of the mounting frame. When the extension shaft of the electric telescopic rod is in an extended state, the crank drives the second rotating shaft to rotate to a state where the cam leaves the first plane of the lower wall of the steering tube sleeve and the two groups of push plates leave the state of pressing against the inner wall of the mounting frame, and the electric telescopic rod has a self-locking function.

[0012] Preferably, the transmission structure includes two groups of bosses and two groups of grooves, the two groups of grooves are arranged on the outer wall of the second rotating shaft and are located at the end of the second rotating shaft facing the limit plate, the two groups of grooves are symmetrically distributed left and right with the axis of the second rotating shaft as the center, the two groups of bosses are fixedly connected to the side of the limit plate facing the second rotating shaft and are distributed left and right with the axis of the second rotating shaft as the center, the outer shape of the boss is consistent with the shape of the inner wall of the groove, and arc chamfers are provided at the corners of the outer wall of the boss, the intersection of the boss and the limit plate, the corners of the inner wall of the groove, and the connection between the inner wall of the groove and the end of the second rotating shaft facing the limit plate.

[0013] Preferably, the reset structure is a spring, and the spring is sleeved on the outer wall of the push rod and located between the baffle plate and the limit plate.

[0014] Preferably, the anti-rotation structure includes an anti-rotation rib and an anti-rotation groove, the anti-rotation rib is arranged on the outer wall of the push rod and the length direction of the anti-rotation rib is distributed along the axial direction of the push rod, the anti-rotation groove is arranged on the inner wall of the baffle, the anti-rotation rib is slidingly connected to the inner wall of the anti-rotation groove, and the push rod is maintained by the anti-rotation rib and the anti-rotation groove to only move axially without radial rotation.

[0015] Preferably, the pressure detection structure includes a first pressure sensor and a second pressure sensor, the first pressure sensor is arranged on a side of the push plate away from the push rod, the second pressure sensor is arranged on the inner wall of the cam and the detection surface of the second pressure sensor is flush with the raised surface of the cam.

[0016] Preferably, the wear-resistant structure includes two groups of wear-resistant pads, which are respectively fixedly connected to the inner front wall and the inner rear wall of the mounting frame through two groups of seat rings, and the two groups of wear-resistant pads are respectively opposite to the two groups of push plates front and back.

[0017] Preferably, the reinforcement structure includes a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are both fixedly connected to the inner wall of the mounting frame, the second reinforcing rib is located between the first rotating shaft and the second rotating shaft in frontal projection, the first reinforcing rib is located on the right side of the second rotating shaft in frontal projection, the inner walls of the first reinforcing rib and the second reinforcing rib are both provided with long holes that pass through from left to right, and the inner walls of the two groups of long holes and the inner wall of the support tube are both provided with damping layers.

[0018] An automobile comprises any one of the steering column locking devices described above.

[0019] (III) Beneficial effects

[0020] The present invention provides a steering column locking device and a vehicle, which have the following beneficial effects:

[0021] 1. Compared with the prior art, the steering column locking device and the automobile drive the second rotating shaft through the electric telescopic rod via the crank, drive the cam to rotate through the second rotating shaft, and synchronously drive the two sets of push plates to move axially through the second rotating shaft to achieve locking and loosening between the support tube and the mounting frame and between the support tube and the steering tube sleeve. One action can simultaneously achieve locking or loosening of two positions. The electric telescopic rod has a self-locking function. In the locked state, it will not fail due to vibration during vehicle driving. The electric telescopic rod is hidden inside the mounting frame, which can greatly reduce the demand for installation space. In the loosened state, the steering tube sleeve moves axially along the inner wall of the support tube to adjust the extension length of the steering column, and the support tube rotates along the axis of the first rotating shaft to adjust the height of the steering column.

[0022] 2. Compared with the prior art, the steering column locking device and the automobile are provided with a first pressure sensor and a second pressure sensor on the push plate and the cam respectively, and the clamping force of the pressing position can be monitored in real time by the on-board computer. When wear occurs and the clamping force is insufficient, an alarm can be given in time to avoid accidents caused by failure of the locking state during driving.

[0023] 3. Compared with the prior art, the steering column locking device and the automobile have a damping layer on the inner wall of the long hole and the inner wall of the support tube. When the steering tube sleeve moves axially along the inner wall of the support tube to adjust the extension length of the steering column and when the support tube rotates along the axis of the first rotating shaft to adjust the height of the steering column, the damping effect of the damping layer can achieve a smooth movement effect and improve the comfort of use.

[0024] 4. Compared with the prior art, the steering column locking device and the automobile are provided with a first reinforcing rib and a second reinforcing rib on the inner side wall of the mounting frame, so as to improve the structural strength of the mounting frame, prevent the mounting frame from being deformed under the long-term pushing of the two sets of push plates and cause the locking state to fail, thereby greatly improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the side structure of the first reinforcing rib of the present invention;

[0027] Figure 3 It is a partial cross-sectional view of the interior of the base, mounting frame, support tube, steering tube sleeve and steering column connection structure of the present invention;

[0028] Figure 4 It is a partial side cross-sectional view of the supporting tube, steering tube sleeve, steering column, second rotating seat, second rotating shaft and push rod connecting structure of the present invention;

[0029] Figure 5 It is a partial schematic diagram of the connecting structure of the push rod, the limit plate and the boss of the present invention;

[0030] Figure 6 It is a schematic diagram of the partial structure of the second rotating shaft and the groove of the present invention;

[0031] Figure 7 It is a schematic diagram of the cam structure of the present invention.

[0032] Among them, 1. base; 2. mounting frame; 3. first rotating shaft; 4. first rotating seat; 5. supporting tube; 6. steering tube sleeve; 7. steering column; 8. first reinforcing rib; 9. damping layer; 10. second reinforcing rib; 11. seat ring; 12. wear-resistant pad; 13. electric telescopic rod; 14. crank; 15. second rotating seat; 16. baffle; 17. push plate; 18. first pressure sensor; 19. opening; 20. fixing sleeve; 21. push rod; 22. limit plate; 23. spring; 24. cam; 25. second pressure sensor; 26. second rotating shaft; 27. anti-rotation rib; 28. boss; 29. ​​groove. DETAILED DESCRIPTION

[0033] 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.

[0034] Example:

[0035] like Figures 1 to 7As shown, an embodiment of the present invention provides a steering column locking device, including a base 1, a mounting frame 2, a support tube 5, a steering tube sleeve 6, and a steering column 7. The lower wall of the support tube 5 and near the left end is fixedly connected to the first rotating seat 4, the lower wall of the support tube 5 and the end located away from the first rotating seat 4 are fixedly connected to two groups of second rotating seats 15 in a front-to-back distribution in sequence, and the lower wall of the support tube 5 and located between the two groups of second rotating seats 15 are provided with an opening 19, the mounting frame 2 is fixedly connected to the upper wall of the base 1, the support tube 5 is rotatably connected to the inner wall of the mounting frame 2, the first rotating seat 4 is rotatably connected to the inner wall of the mounting frame 2 through the first rotating shaft 3, the support tube 5 is rotatably connected to the inner wall of the mounting frame 2 through the first rotating seat 4 and the first rotating shaft 3, and the steering tube sleeve 6 is slidably connected to The inner wall of the support tube 5 and the lower wall of the steering tube sleeve 6 are provided with a first plane, and the inner lower wall of the support tube 5 is provided with a second plane matched with the first plane of the lower wall of the steering tube sleeve 6. The steering tube sleeve 6 can only move axially without radial rotation between the first plane, the second plane and the support tube 5. The steering column 7 is rotatably connected to the inner wall of the steering tube sleeve 6 through a bearing. The steering column 7 and the steering tube sleeve 6 can only rotate radially without axial movement. When the mounting frame 2, the support tube 5 and the steering tube sleeve 6 are not in a locked state, the height of the steering column 7 can be adjusted by rotating the support tube 5 along the axis of the first rotating shaft 3, and the extension length of the steering column 7 can be adjusted by axially moving the steering tube sleeve 6 along the inner wall of the support tube 5, so as to realize adjustment in two directions;

[0036] like Figure 3 , Figure 4As shown, in order to drive the second rotating shaft 26 to rotate, the second rotating shaft 26 is rotatably connected between the two groups of second rotating seats 15, and a rotating driving structure for driving the second rotating shaft 26 to rotate is arranged between the first rotating shaft 3 and the second rotating shaft 26. The rotating driving structure includes an electric telescopic rod 13 and a crank 14. The electric telescopic rod 13 is rotatably connected to the outer wall of the first rotating shaft 3. The crank 14 is rotatably connected to the electric telescopic rod 13 and one end of the first rotating shaft 3. The end of the crank 14 away from the electric telescopic rod 13 is fixedly connected to the outer wall of the second rotating shaft 26. When the electric telescopic rod 13 is extended and the shaft is in a retracted state, the second rotating shaft 26 is driven by the crank 14 to rotate until the cam 24 is pressed against the first plane of the lower wall of the steering sleeve 6, and the two groups of push plates 17 are divided into When the extension shaft of the electric telescopic rod 13 is in the extended state, the crank 14 drives the second rotating shaft 26 to rotate until the cam 24 leaves the first plane of the lower wall of the steering tube sleeve 6 and the two sets of push plates 17 leave the state of being pressed against the inner wall of the mounting frame 2. The electric telescopic rod 13 has a self-locking function. The self-locking function of the electric telescopic rod 13 prevents the locking failure due to vibration in the locked state. The extension shaft of the electric telescopic rod 13 is extended and retracted, and the second rotating shaft 26 can be driven to rotate by the crank 14. In this embodiment, the rotation angle of the second rotating shaft 26 is set to 90 degrees, and the rotation angle of the second rotating shaft 26 can be adjusted by controlling the extension length of the extension shaft of the electric telescopic rod 13.

[0037] like Figure 3 , Figure 4 as well as Figure 7 As shown, in order to lock the axial position of the steering sleeve 6, a cam 24 for tightening and loosening the steering sleeve 6 to fix the axial position of the steering sleeve 6 is fixedly connected to the outer wall of the second rotating shaft 26 and located between the two sets of second rotating seats 15. When the electric telescopic rod 13 extends and retracts, the second rotating shaft 26 and the cam 24 are driven to rotate by the crank 14, and the convex part of the cam 24 is pressed against the first plane of the lower wall of the steering sleeve 6 exposed from the opening 19, thereby locking the steering sleeve 6 and the support tube 5. Otherwise, the convex part of the cam 24 is driven to rotate to a position where it does not contact the first plane, so that the steering sleeve 6 can move axially along the inner wall of the support tube 5 to adjust the extension length of the steering column 7.

[0038] like Figure 3 , Figure 4 , Figure 5 as well as Figure 6As shown, in order to enable the second rotating shaft 26 to push the two groups of push rods 21 in opposite directions while the cam 24 locks the steering sleeve 6, the two groups of second rotating seats 15 are fixedly connected to the opposite sides with fixed sleeves 20, and the two groups of fixed sleeves 20 are fixedly connected to the opposite ends with baffles 16. The two ends of the second rotating shaft 26 respectively penetrate the two groups of second rotating seats 15 and extend into the two groups of fixed sleeves 20 respectively. The inner walls of the two groups of fixed sleeves 20 are provided with push rods 21, and the side opposite to the push rods 21 and the second rotating shaft 26 is fixedly connected to the limiting plate 22. A transmission structure is provided between the limiting plate 22 and the second rotating shaft 26, and the transmission structure includes two groups of bosses 28 and two groups of grooves 29. The two groups of grooves 29 are arranged on the outer wall of the second rotating shaft 26 and are located at the end of the second rotating shaft 26 facing the limiting plate 22. The two groups of grooves 29 are symmetrically distributed with the axis of the second rotating shaft 26 as the center. The two groups of bosses 28 are fixedly connected to the limiting plate 22 is toward one side of the second rotating shaft 26 and is distributed left and right with the axis of the second rotating shaft 26 as the center. The shape of the boss 28 is consistent with the shape of the inner wall of the groove 29. The corners of the outer wall of the boss 28, the intersection of the boss 28 and the limiting plate 22, the corners of the inner wall of the groove 29, and the connection between the inner wall of the groove 29 and the end of the second rotating shaft 26 facing the limiting plate 22 are all provided with arc chamfers. When the support tube 5 and the mounting frame 2 are in a loose state, the boss 28 is located on the inner wall of the groove 29. When the locking action occurs, the second rotating shaft 26 rotates, and the push rod 21 does not rotate due to the anti-rotation structure. The boss 28 slides out of the groove 29 through the rotation force of the second rotating shaft 26, and after the second rotating shaft 26 rotates to ninety degrees, the boss 28 abuts against the end of the second rotating shaft 26. In this process, the push rod 21 is pushed by the second rotating shaft 26 toward the end away from the second rotating shaft 26 by the axial depth of the groove 29.

[0039] like Figure 4 , Figure 5 As shown, in order for the push rod 21 to be reset in the released state, a reset structure is provided between the limit plate 22 and the baffle 16. The reset structure is a spring 23. The spring 23 is sleeved on the outer wall of the push rod 21 and is located between the baffle 16 and the limit plate 22. When the electric telescopic rod 13 extends out of the shaft, the second rotating shaft 26 is driven to rotate again. When the boss 28 and the groove 29 are opposite to each other front and back, the boss 28 is pushed into the groove 29 by the elastic force of the spring 23, and the push rod 21 is reset.

[0040] like Figure 4 , Figure 5As shown, in order to prevent the push rod 21 from rotating when the second rotating shaft 26 rotates, the end of the push rod 21 away from the limiting plate 22 passes through the inner wall of the baffle 16 and is slidably connected thereto, and a rotation-stopping structure is provided between the push rod 21 and the baffle 16, the rotation-stopping structure includes a rotation-stopping rib 27 and a rotation-stopping groove, the rotation-stopping rib 27 is provided on the outer wall of the push rod 21 and the length direction of the rotation-stopping rib 27 is distributed along the axial direction of the push rod 21, the rotation-stopping groove is provided on the inner side wall of the baffle 16, the rotation-stopping rib 27 is slidably connected to the inner side wall of the rotation-stopping groove, the push rod 21 is kept to move only axially without radially rotating by the rotation-stopping rib 27 and the rotation-stopping groove, and the push rod 21 does not rotate with the second rotating shaft 26, so as to ensure that the combination and separation of the boss 28 and the groove 29 can be realized smoothly;

[0041] like Figure 3 , Figure 4 As shown, in order to lock and separate the support tube 5 and the mounting frame 2, the opposite ends of the two push rods 21 are respectively fixedly connected with a set of push plates 17 for pressing and loosening the inner wall of the mounting frame 2 to fix the upper and lower positions of the support tube 5. When the second rotating shaft 26 rotates to push the two push rods 21 to move in opposite directions, the two push plates 17 are driven to press against the inner front wall and the inner rear wall of the mounting frame 2 to achieve the locking state;

[0042] like Figure 3 , Figure 4 as well as Figure 7 As shown, in order to detect whether there is a risk of failure in the locking state in real time, a pressure detection structure for detecting contact pressure is provided on the push plate 17 and the cam 24. The pressure detection structure includes a first pressure sensor 18 and a second pressure sensor 25. The first pressure sensor 18 is arranged on the side of the push plate 17 away from the push rod 21, and the second pressure sensor 25 is arranged on the inner wall of the cam 24, and the detection surface of the second pressure sensor 25 is flush with the convex surface of the cam 24. When the cam 24 and the push plate 17 are in the locking operation, the pressing force can be detected by the second pressure sensor 25 and the first pressure sensor 18 respectively, and the pressure information is collected by the driving computer. When the pressing force is lower than the set threshold, an alarm can be given in time to facilitate timely maintenance and avoid locking failure.

[0043] like Figure 3 As shown, in order to improve the wear resistance of the inner wall of the mounting frame 2, a wear-resistant structure is provided on the inner wall of the mounting frame 2 and opposite to the front and rear of the push plate 17. The wear-resistant structure includes two groups of wear-resistant pads 12. The two groups of wear-resistant pads 12 are respectively fixedly connected to the inner front wall and the inner rear wall of the mounting frame 2 through two groups of seat rings 11. The two groups of wear-resistant pads 12 are respectively opposite to the two groups of push plates 17. The service life of the mounting frame 2 can be effectively improved by providing the wear-resistant pads 12. After wear occurs, only the wear-resistant pads 12 need to be replaced.

[0044] like Figure 1 , Figure 2 as well as Figure 3As shown, in order to avoid deformation of the mounting frame 2 when the two groups of push plates 17 are pressed against the mounting frame 2, a reinforcement structure for strengthening the overall structural strength is provided on the inner wall of the mounting frame 2, and the reinforcement structure includes a first reinforcement rib 8 and a second reinforcement rib 10. The first reinforcement rib 8 and the second reinforcement rib 10 are both fixedly connected to the inner wall of the mounting frame 2. The second reinforcement rib 10 is located between the first rotation axis 3 and the second rotation axis 26 in front view projection. The first reinforcement rib 8 is located on the right side of the second rotation axis 26 in front view projection. The inner walls of the first reinforcement rib 8 and the second reinforcement rib 10 are both provided with long holes that pass through from left to right. The inner walls of the two groups of long holes and the inner wall of the support tube 5 are both provided with a damping layer 9. The first reinforcement rib 8 and the second reinforcement rib 10 can greatly improve the structural strength of the mounting frame 2 to avoid deformation. The damping layer 9 can make the adjustment action smoother.

[0045] An automobile comprises the steering column locking device described in any one of the above embodiments.

[0046] Working principle: When the mounting frame 2, the support tube 5 and the steering tube sleeve 6 are not in a locked state, the support tube 5 can be rotated along the axis of the first rotating shaft 3 to adjust the height of the steering column 7, and the steering tube sleeve 6 can be moved axially along the inner wall of the support tube 5 to adjust the extension length of the steering column 7, so as to achieve adjustment in two directions. The self-locking function of the electric telescopic rod 13 prevents the locking failure due to vibration in the locked state. The extension shaft of the electric telescopic rod 13 can be extended and retracted, and the second rotating shaft 26 can be driven to rotate by the crank 14. In this embodiment, the rotation angle of the second rotating shaft 26 is set to 90 degrees. The rotation angle of the second rotating shaft 26 can be adjusted by controlling the extension length of the extension shaft of the electric telescopic rod 13. When the output shaft is retracted, the crank 14 drives the second rotating shaft 26 and the cam 24 to rotate, and the protruding portion of the cam 24 abuts against the first plane of the lower wall of the steering sleeve 6 exposed from the opening 19, thereby locking the steering sleeve 6 and the support tube 5. Conversely, the protruding portion of the cam 24 is driven to rotate to a position where it does not contact the first plane, so that the steering sleeve 6 can move axially along the inner wall of the support tube 5 to adjust the extension length of the steering column 7. When the support tube 5 and the mounting frame 2 are in a loose state, the boss 28 is located on the inner wall of the groove 29. When the locking action occurs, the second rotating shaft 26 rotates, while the push rod 21 does not rotate due to the anti-rotation structure. Through the rotation force of the second rotating shaft 26, the boss 28 slides out of the groove 29 and When the second shaft 26 rotates to ninety degrees, the boss 28 abuts against the end of the second shaft 26. During this process, the push rod 21 is pushed by the second shaft 26 toward the end away from the second shaft 26 by the axial depth of the groove 29. When the second shaft 26 rotates, it pushes the two groups of push rods 21 to move away from each other, that is, it drives the two groups of push plates 17 to respectively press against the inner front wall and the inner rear wall of the mounting frame 2 to achieve a locked state. When the electric telescopic rod 13 extends the shaft, the second shaft 26 is driven to rotate again. When the boss 28 and the groove 29 are relative to each other front and back, the boss 28 is pushed into the groove 29 by the elastic force of the spring 23, and the push rod 21 is reset. The push rod 21 is kept only axially moved by the anti-rotation rib 27 and the anti-rotation groove. The cam 24 and the push plate 17 can detect the clamping force through the second pressure sensor 25 and the first pressure sensor 18 respectively during the locking operation, and the pressure information can be collected through the driving computer. When the clamping force is lower than the set threshold, an alarm can be given in time to facilitate timely maintenance and avoid locking failure. The service life of the mounting bracket 2 can be effectively improved by setting the wear-resistant pad 12. After wear occurs, only the wear-resistant pad 12 needs to be replaced. The structural strength of the mounting bracket 2 can be greatly improved by the first reinforcing rib 8 and the second reinforcing rib 10 to avoid deformation. The damping layer 9 can make the adjustment action smoother.

[0047] 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 column locking device, characterized in that: The invention comprises a base (1), a mounting frame (2), a support tube (5), a steering tube sleeve (6), and a steering column (7); the lower wall of the support tube (5) and a position close to the left end thereof are fixedly connected to a first rotating seat (4); the lower wall of the support tube (5) and an end thereof far from the first rotating seat (4) are fixedly connected to two groups of second rotating seats (15) in a front-to-back distribution in sequence; the lower wall of the support tube (5) and an opening (19) are arranged between the two groups of second rotating seats (15); a second rotating shaft (26) is rotatably connected between the two groups of second rotating seats (15); A rotation driving structure for driving the second rotating shaft (26) to rotate is arranged between the first rotating shaft (3) and the second rotating shaft (26); a cam (24) for tightening and loosening the steering sleeve (6) to fix the axial position of the steering sleeve (6) is fixedly connected to the outer wall of the second rotating shaft (26) and is located between the two groups of second rotating seats (15); a fixing sleeve (20) is fixedly connected to the opposite sides of the two groups of second rotating seats (15); a baffle (16) is fixedly connected to the opposite ends of the two groups of fixing sleeves (20); and the second rotating shaft (26) is fixedly connected to the opposite sides of the two groups of second rotating seats (15). The ends respectively penetrate the two groups of second rotating seats (15) and extend into the interior of the two groups of fixed sleeves (20). The inner walls of the two groups of fixed sleeves (20) are both provided with push rods (21). The side of the push rod (21) opposite to the second rotating shaft (26) is fixedly connected to a limit plate (22). A transmission structure is provided between the limit plate (22) and the second rotating shaft (26). A reset structure is provided between the limit plate (22) and the baffle (16). The end of the push rod (21) away from the limit plate (22) penetrates the inner wall of the baffle (16) and is slidably connected thereto. A rotation-stopping structure is provided between the push rod (21) and the baffle (16); the opposite ends of the two groups of push rods (21) are respectively fixedly connected with a group of push plates (17) for tightening and loosening the inner wall of the mounting frame (2) to fix the upper and lower positions of the support tube (5); the push plates (17) and the cam (24) are both provided with pressure detection structures for detecting contact pressure; the inner wall of the mounting frame (2) and the front and rear opposite positions of the push plates (17) are provided with wear-resistant structures; and the inner wall of the mounting frame (2) is provided with a reinforcement structure for strengthening the overall structural strength.

2. A steering column locking device according to claim 1, characterized in that: The mounting frame (2) is fixedly connected to the upper wall of the base (1); the support tube (5) is rotatably connected to the inner wall of the mounting frame (2); the first rotating seat (4) is rotatably connected to the inner wall of the mounting frame (2) via a first rotating shaft (3); the support tube (5) is rotatably connected to the inner wall of the mounting frame (2) via the first rotating seat (4) and the first rotating shaft (3); the steering tube sleeve (6) is slidably connected to the inner wall of the support tube (5); a first plane is provided on the lower wall of the steering tube sleeve (6); a second plane matching the first plane of the lower wall of the steering tube sleeve (6) is provided on the inner lower wall of the support tube (5); the steering tube sleeve (6) can only move axially between the first plane, the second plane and the support tube (5) without radial rotation; the steering column (7) is rotatably connected to the inner wall of the steering tube sleeve (6) via a bearing; the steering column (7) and the steering tube sleeve (6) can only rotate radially without axial movement.

3. A steering column locking device according to claim 2, characterized in that: The rotary drive structure comprises an electric telescopic rod (13) and a crank (14); the electric telescopic rod (13) is rotatably connected to the outer wall of the first rotating shaft (3); the crank (14) is rotatably connected to the electric telescopic rod (13) and one end of the first rotating shaft (3); one end of the crank (14) away from the electric telescopic rod (13) is fixedly connected to the outer wall of the second rotating shaft (26); when the extension shaft of the electric telescopic rod (13) is in a retracted state, the crank (14) drives the second rotating shaft (26) to rotate to The cam (24) is in a state of pressing against the first plane of the lower wall of the steering tube sleeve (6) and the two groups of push plates (17) are in a state of pressing against the inner front wall and the inner rear wall of the mounting frame (2) respectively. When the extension shaft of the electric telescopic rod (13) is in an extended state, the crank (14) drives the second rotating shaft (26) to rotate until the cam (24) leaves the first plane of the lower wall of the steering tube sleeve (6) and the two groups of push plates (17) leave the state of pressing against the inner wall of the mounting frame (2). The electric telescopic rod (13) has a self-locking function.

4. A steering column locking device according to claim 3, characterized in that: The transmission structure comprises two groups of bosses (28) and two groups of grooves (29). The two groups of grooves (29) are arranged on the outer wall of the second rotating shaft (26) and are located at the end of the second rotating shaft (26) facing the limiting plate (22). The two groups of grooves (29) are symmetrically distributed left and right with the axis of the second rotating shaft (26) as the center. The two groups of bosses (28) are fixedly connected to the side of the limiting plate (22) facing the second rotating shaft (26) and are distributed left and right with the axis of the second rotating shaft (26) as the center. The shape of the boss (28) is consistent with the shape of the inner wall of the groove (29). The corners of the outer wall of the boss (28), the intersection of the boss (28) and the limiting plate (22), the corners of the inner wall of the groove (29) and the connection between the inner wall of the groove (29) and one end of the second rotating shaft (26) facing the limiting plate (22) are all provided with arc chamfers.

5. A steering column locking device according to claim 4, characterized in that: The reset structure is a spring (23), which is sleeved on the outer wall of the push rod (21) and located between the baffle plate (16) and the limit plate (22).

6. A steering column locking device according to claim 5, characterized in that: The anti-rotation structure comprises an anti-rotation rib (27) and an anti-rotation groove, wherein the anti-rotation rib (27) is arranged on the outer wall of the push rod (21) and the length direction of the anti-rotation rib (27) is distributed along the axial direction of the push rod (21), and the anti-rotation groove is arranged on the inner wall of the baffle (16), and the anti-rotation rib (27) is slidably connected to the inner wall of the anti-rotation groove. The push rod (21) is maintained to move only axially without radial rotation by the anti-rotation rib (27) and the anti-rotation groove.

7. A steering column locking device according to claim 6, characterized in that: The pressure detection structure comprises a first pressure sensor (18) and a second pressure sensor (25), wherein the first pressure sensor (18) is arranged on a side of the push plate (17) away from the push rod (21), and the second pressure sensor (25) is arranged on an inner side wall of the cam (24), and a detection surface of the second pressure sensor (25) is flush with a raised surface of the cam (24).

8. A steering column locking device according to claim 7, characterized in that: The wear-resistant structure comprises two groups of wear-resistant pads (12), the two groups of wear-resistant pads (12) being fixedly connected to the inner front wall and the inner rear wall of the mounting frame (2) through two groups of seat rings (11), and the two groups of wear-resistant pads (12) being respectively opposite to the two groups of push plates (17) in front and back.

9. A steering column locking device according to claim 7, characterized in that: The reinforcement structure comprises a first reinforcing rib (8) and a second reinforcing rib (10), the first reinforcing rib (8) and the second reinforcing rib (10) are both fixedly connected to the inner wall of the mounting frame (2), the second reinforcing rib (10) is located between the first rotating shaft (3) and the second rotating shaft (26) in frontal projection, the first reinforcing rib (8) is located on the right side of the second rotating shaft (26) in frontal projection, the inner walls of the first reinforcing rib (8) and the second reinforcing rib (10) are both provided with long holes that penetrate from left to right, and the inner walls of the two groups of the long holes and the inner wall of the support tube (5) are both provided with a damping layer (9).

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

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