Mechanically locking steering column for commercial vehicles

Abstract

The utility model relates to a kind of mechanical locking's commercial vehicle steering column, belong to automobile parts technical field.The steering column includes installation support, sliding support, pipe column head and adjusting locking mechanism constitute, adjusting locking mechanism includes rotating shaft, cam, handle, outer connecting sheet, inner connecting sheet and friction plate, pipe column head includes column pipe shell body.The steering column can be by connecting sheet, sliding support and column pipe shell body constitute the pitch angle of adjusting pipe column head of triangle;It can be to pipe column head large-angle adjustment, and then can be to steering wheel large-angle adjustment, effectively increase steering wheel angle adjustment range;Due to angle adjustment process only pipe column head swing occupies cab space, in the case where the length of pipe column head is reduced, effectively reduce the occupation of cab space, so that pipe column head angle adjustment process is not susceptible to the limitation of cab space.Solve the existing steering column adjustment angle limited, cannot large-angle adjustment problem.

Description

Technical Field

[0001] This utility model relates to a mechanically locking steering column for commercial vehicles, belonging to the field of automotive parts technology. Background Technology

[0002] Commercial vehicles include light trucks, heavy trucks, and other commercial vehicles. The steering column is the intermediate component connecting the steering wheel and the steering gear; one end connects to the steering wheel, and the other end connects to the steering gear via an intermediate shaft. Due to the large front end of commercial vehicles and the difference in load, the steering column of commercial vehicles is not only large but also long. When adjusting the steering wheel angle through the steering column, a large angle adjustment requires a large angle rotation of the steering column. Because the steering column is long and large, the swing angle of the steering column is easily limited by the cab space, which leads to limited steering wheel angle adjustment, allowing only small angle adjustments. For example, in the patent application for steering column assembly and vehicle disclosed in CN119142403A, the column body and outer column tube are rotated about axis L1. When adjusting the angle, the entire column body and outer column tube will swing outward. The total length of the column body and outer column tube is the total length of the steering column, which causes the device of the steering column length to swing, compressing the space in the cab. The larger the adjustment angle, the more severe the compression of the cab space. Therefore, it is necessary to design a mechanically locking steering column for commercial vehicles to solve the above problems. Summary of the Invention

[0003] The purpose of this utility model is to provide a mechanically locking commercial vehicle steering column that can be adjusted at a large angle while reducing the space occupied in the cab, thus solving the problem that existing steering columns tend to encroach on the cab space when adjusting the angle.

[0004] The technical solution of this utility model is: A mechanically locking steering column for commercial vehicles comprises a mounting bracket, a sliding bracket, a column head, and an adjusting locking mechanism. The sliding bracket is inserted into the mounting bracket, and a column head is provided at the end of the sliding bracket. An adjusting locking mechanism is provided between the column head, the sliding bracket, and the mounting bracket.

[0005] The adjustment and locking mechanism consists of a rotating shaft, a cam, a handle, an outer connecting plate, an inner connecting plate, and a friction plate that pass through both sides of the mounting bracket and the sliding bracket in sequence. A cam is symmetrically installed at one end of the rotating shaft on the outer side of the mounting bracket. A handle that can drive the outer cam to rotate is provided on the outer side of the cam. Multiple layers of outer connecting plates are respectively provided on the other end of the rotating shaft and the rotating shaft on the inner side of the cam. Inner connecting plates are provided at both ends of the rotating shaft between the mounting bracket and the sliding bracket. Friction plates are respectively fitted on the rotating shaft between the inner connecting plate and the sliding bracket, between the outer connecting plate and the mounting bracket, and between the outer connecting plates.

[0006] The tube head includes a tube shell and a central shaft. The bottom end of the tube shell is movably connected to a sliding bracket via a pin, and the top end of the tube shell is movably connected to an inner connecting piece and an outer connecting piece via pins respectively.

[0007] A friction plate is provided on the rotating shaft between the cam and the outer connecting plate, and the two ends of the friction plate are fixedly connected to the mounting bracket by fixing bolts.

[0008] The friction plate and the mounting bracket are provided with transverse sliding grooves on both the front and rear ends. The transverse sliding groove at the rear end of the mounting bracket is connected to the pin sliding sleeve on the sliding bracket. The transverse sliding groove at the front end of the mounting bracket is connected to the rotating shaft sliding sleeve. The transverse sliding groove of the friction plate is slidably connected to the protrusion on the cam to limit the rotation of the inner cam.

[0009] The inner and outer connecting pieces are respectively provided with tilt adjustment limiting slide grooves, which are connected to the rotating shaft sliding sleeve.

[0010] Balance springs are provided between the sliding bracket and the column tube housing, and between the mounting bracket and the sliding bracket.

[0011] The beneficial effects of this utility model are as follows: This mechanically locked commercial vehicle steering column allows for adjustment of the column head's pitch angle via a triangle formed by the connecting piece, sliding bracket, and column housing, thereby adjusting the steering wheel's pitch angle. Even with a reduced column head length, it allows for large-angle adjustment of the column head, and consequently, a large-angle adjustment of the steering wheel, effectively increasing the steering wheel angle adjustment range. Since only the column head's movement occupies cab space during angle adjustment, the reduced column head length minimizes space constraints, making the angle adjustment less limited by cab space limitations. This solves the problem of limited adjustment angles and the inability to perform large-angle adjustments with existing steering columns. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram showing the distribution of the friction plates of this utility model; Figure 4 This is a schematic diagram of the structure of the column head of this utility model; Figure 5 This is a schematic diagram of the structure of the mounting bracket of this utility model; Figure 6 This is a schematic diagram of the structure of the sliding bracket of this utility model.

[0013] In the diagram: 1. Mounting bracket, 2. Sliding bracket, 3. Rotating shaft, 4. Cam, 5. Handle, 6. Outer connecting piece, 7. Inner connecting piece, 8. Friction plate, 9. Column tube housing, 10. Central shaft, 11. Friction plate, 12. Transverse slide groove, 13. Pin, 14. Tilt adjustment limit slide groove, 15. Balance spring, 16. Connecting piece connection point, 17. Sliding bracket connection point. Detailed Implementation

[0014] This mechanically locked steering column for commercial vehicles consists of a mounting bracket 1, a sliding bracket 2, a column head, and an adjusting locking mechanism. The mounting bracket 1 is fixedly connected to the cab bulkhead. The sliding bracket 2 is inserted into the mounting bracket 1, and a column head is located at one end of the sliding bracket 2. An adjusting locking mechanism is provided between the column head, the sliding bracket 2, and the mounting bracket 1. This mechanism can be adjusted to lock the positions of the column head, the sliding bracket 2, and the mounting bracket 1, or to allow adjustment of their relative positions by loosening the adjusting locking mechanism. The sliding bracket 2 adjusts the relative position of the column head by sliding relative to the mounting bracket 1, thereby adjusting the height of the steering wheel connected to the column head.

[0015] The adjusting locking mechanism consists of a rotating shaft 3, a cam 4, a handle 5, an outer connecting piece 6, an inner connecting piece 7, and a friction plate 8, which pass sequentially through both sides of the mounting bracket 1 and the sliding bracket 2. A cam 4 is symmetrically mounted on one end of the rotating shaft 3 on the outer side of the mounting bracket 1. A handle 5 is provided on the outer side of the cam 4 to drive its rotation. Multiple layers of outer connecting pieces 6 are respectively provided on the other end of the rotating shaft 3 and on the rotating shaft 3 inside the cam 4. Inner connecting pieces 7 are provided on both ends of the rotating shaft 3 between the mounting bracket 1 and the sliding bracket 2. Friction plates 8 are respectively fitted on the rotating shaft 3 between the inner connecting piece 7 and the sliding bracket 2, between the outer connecting piece 6 and the mounting bracket 1, and between the outer connecting pieces 6. The column head includes a column housing 9 and a central shaft 10. The bottom end of the column housing 9 is movably connected to the sliding bracket 2 via a pin, and the top end of the column housing 9 is movably connected to the inner connecting piece 7 and the outer connecting piece 6 via pins. The function of cam 4 is that, during the rotation of the outer cam 4 driven by handle 5, the relative rotation of the outer cam 4 and the inner cam 4 causes the rotating outer cam 4 to press or release the inner cam 4. During the pressing of the inner cam 4 by the outer cam 4, the inner cam 4 sequentially presses the outer connecting piece 6, friction piece 8, mounting bracket 1, inner connecting piece 7, and sliding bracket 2, locking these components together through friction. This fixes the relative positions of the outer connecting piece 6, friction piece 8, mounting bracket 1, inner connecting piece 7, and sliding bracket 2, thereby locking the relative position of the column head and thus the relative position of the steering wheel. When the outer cam 4 releases its pressure on the inner cam 4, it also releases the pressure on the outer connecting piece 6, friction piece 8, mounting bracket 1, inner connecting piece 7, and sliding bracket 2, allowing relative movement between them. This allows adjustment of the column head and, consequently, the steering wheel. The function of the outer connecting piece 6 and the inner connecting piece 7 is to form a triangle with the sliding bracket 2 and the tube head through the connecting piece formed by the outer connecting piece 6 and the inner connecting piece 7. This triangle, in conjunction with the sliding bracket, restricts the position of the tube head, allowing the tube head to rotate around the connection point between the tube housing 9 and the sliding bracket 2. Since the connection point between the tube housing 9 and the sliding bracket 2 is at the front end of the rotation shaft 3, the angle of the tube head can be adjusted without rotating the sliding bracket 2. This allows the length of the tube head to be set arbitrarily, effectively reducing the length of the tube head. Because the rotation of the tube head after the length reduction is less likely to obstruct the cab control, the angle of the tube head can be adjusted at a large angle. This makes the steering wheel angle adjustment less restricted by the cab space, effectively increasing the steering wheel angle adjustment range.The function of the friction plate 8 is to increase the friction between the outer connecting plate 6, the mounting bracket 1, the inner connecting plate 7, and the sliding bracket 2, thereby ensuring that when the outer connecting plate 6, the mounting bracket 1, the inner connecting plate 7, and the sliding bracket 2 are locked together by friction, the outer connecting plate 6, the mounting bracket 1, the inner connecting plate 7, and the sliding bracket 2 are not prone to relative sliding, thus ensuring the locked state.

[0016] A friction plate 11 is provided on the rotating shaft 3 between the cam 4 and the outer connecting piece 6. Both ends of the friction plate 11 are fixedly connected to the mounting bracket 1 by fixing bolts. Transverse sliding grooves 12 are provided on both the front and rear ends of the friction plate 11 and the mounting bracket 1. The transverse sliding groove 12 at the rear end of the mounting bracket 1 is slidably connected to the pin 13 on the sliding bracket 2; the transverse sliding groove 12 at the front end of the mounting bracket 1 is slidably connected to the rotating shaft 3; the transverse sliding groove 12 of the friction plate 11 is slidably connected to the protrusion on the cam 4 to restrict the rotation of the inner cam 4. The function of the transverse sliding groove 12 is to restrict the axial position of the pin 13 and the rotating shaft 3, thereby restricting the relative sliding between the sliding bracket 2 and the mounting bracket 1, so that the sliding bracket 2 can only slide laterally relative to the mounting bracket 1.

[0017] The inner connecting piece 7 and the outer connecting piece 6 are respectively provided with tilt adjustment limit slide grooves 14, which are slidably connected to the rotating shaft 3.

[0018] Balance springs 15 are respectively provided between the sliding bracket 2 and the column tube housing 9 and between the mounting bracket 1 and the sliding bracket 2. The elastic force of the balance springs 15 balances the weight of the sliding bracket 2, the column head, and the steering wheel, thereby reducing the resistance during the steering wheel adjustment process and facilitating the adjustment of the steering wheel.

[0019] When adjusting the mechanically locked steering column of a commercial vehicle, turning the handle 5 causes the outer cam 4 to rotate, disengaging the cams and relieving pressure on the friction plate 11, connecting piece 6, mounting bracket 1, inner connecting piece 7, and sliding bracket 2. After the handle 5 is turned to its final position, dragging the steering wheel (up and down or swinging) causes the steering column head to move, pushing the column head and sliding bracket 2 up and down, thus adjusting the steering wheel's height. Pushing the column head to rotate around the connection point between the column housing 9 and the sliding bracket 2 causes the column head to swing, thereby adjusting the steering wheel's pitch angle. During the rotation of the column head, one end of the inner connecting piece 7 and the outer connecting piece 6 slides on the rotating shaft 3 through the tilt adjustment limiting groove 14, rotating around the connection point between the connecting piece and the column housing 9.

[0020] After adjustment, turn handle 5 to make cam 4 press friction plate 11, connecting piece 6, friction plate 8, mounting bracket 1, inner connecting piece 7, and sliding bracket 2. The adjustment locking mechanism is locked by friction, thereby locking the position between mounting bracket 1, sliding bracket 2 and column head, and thus locking the position of steering wheel.

[0021] This mechanically locked commercial vehicle steering column allows for adjustment of the column head's pitch angle via a triangle formed by the connecting piece, sliding bracket, and column housing, thereby adjusting the steering wheel's pitch angle. Even with a reduced column head length, it allows for large-angle adjustment of the column head, and consequently, a large-angle adjustment of the steering wheel, effectively increasing the steering wheel angle adjustment range. Since only the column head's movement occupies cab space during angle adjustment, the reduced column head length minimizes space constraints, making the angle adjustment less limited by cab space limitations. This solves the problem of limited adjustment angles and the inability to perform large-angle adjustments with existing steering columns.

Claims

1. A mechanically locking commercial vehicle steering column, comprising a mounting bracket (1), a sliding bracket (2), a column head, and an adjusting locking mechanism, characterized in that: A sliding bracket (2) is inserted into the mounting bracket (1). A pipe head is provided at the end of the sliding bracket (2). An adjustment and locking mechanism is provided between the pipe head, the sliding bracket (2), and the mounting bracket (1). The adjustment and locking mechanism consists of a rotating shaft (3), a cam (4), a handle (5), an outer connecting piece (6), an inner connecting piece (7), and a friction piece (8) that pass through both sides of the mounting bracket (1) and the sliding bracket (2) in sequence. A cam (4) is symmetrically installed at one end of the rotating shaft (3) on the outside of the mounting bracket (1). A handle (5) that can drive the outer cam (4) to rotate is provided on the outside of the cam (4). Multiple layers of outer connecting pieces (6) are respectively provided on the other end of the rotating shaft (3) and the rotating shaft (3) on the inside of the cam (4). Inner connecting pieces (7) are provided at both ends of the rotating shaft (3) between the mounting bracket (1) and the sliding bracket (2). Friction pieces (8) are respectively fitted on the rotating shaft (3) between the inner connecting piece (7) and the sliding bracket (2), between the outer connecting piece (6) and the mounting bracket (1), and between the outer connecting piece (6). The tube head includes a tube housing (9) and a central shaft (10). The bottom end of the tube housing (9) is movably connected to the sliding bracket (2) via a pin, and the top end of the tube housing (9) is movably connected to the inner connecting piece (7) and the outer connecting piece (6) via pins respectively.

2. The mechanically locking commercial vehicle steering column according to claim 1, characterized in that: A friction plate (11) is provided on the rotating shaft (3) between the cam (4) and the outer connecting piece (6). The two ends of the friction plate (11) are fixedly connected to the mounting bracket (1) by fixing bolts.

3. The mechanically locking commercial vehicle steering column according to claim 2, characterized in that: The friction plate (11) and the mounting bracket (1) are provided with transverse sliding grooves (12) on both the front and rear ends. The transverse sliding groove (12) at the rear end of the mounting bracket (1) is slidably connected to the pin (13) on the sliding bracket (2). The transverse sliding groove (12) at the front end of the mounting bracket (1) is slidably connected to the rotating shaft (3). The transverse sliding groove (12) of the friction plate (11) is slidably connected to the protrusion on the cam (4) to limit the rotation of the inner cam (4).

4. The mechanically locking commercial vehicle steering column according to claim 1, characterized in that: The inner connecting piece (7) and the outer connecting piece (6) are respectively provided with tilt adjustment limit slide groove (14), and the tilt adjustment limit slide groove (14) is slidably connected to the rotating shaft (3).

5. A mechanically locking commercial vehicle steering column according to claim 1, characterized in that: Balance springs (15) are respectively provided between the sliding bracket (2) and the column tube housing (9) and between the mounting bracket (1) and the sliding bracket (2).

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