Steering column assembly for low-speed tractor

Abstract

A steering column assembly for a low-speed tractor belongs to the technical field of automobile steering columns and comprises a column support assembly, a steering shaft sleeve and a steering shaft, the steering shaft sleeve is movably sleeved on the steering shaft, and the steering shaft is rotatably connected with the steering shaft sleeve through a bearing. A tubular column upper bracket and a tubular column lower bracket are arranged on the steering shaft sleeve, and the steering shaft sleeve is movably connected with the tubular column bracket assembly through the tubular column upper bracket and the tubular column lower bracket, so that a connecting structure capable of adjusting the position of the steering shaft sleeve, namely adjusting the steering shaft, is formed; a locking mechanism is arranged between the tubular column upper support and the tubular column support assembly, the locking mechanism can lock or loosen the steering shaft sleeve, and when the locking mechanism is loosened, the position of the steering shaft can be adjusted. The steering column assembly for the low-speed tractor is reasonable in design, simple in structure, convenient to assemble, wide in adjusting range, capable of effectively saving occupied space and improving assembling efficiency and suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive steering columns, in particular to a steering column assembly for low-speed tractors. Background Art

[0002] The steering column assembly, also known as the steering column assembly, is a key component in the vehicle steering system. It mainly undertakes the important task of connecting the steering wheel and the steering gear and accurately transmitting the driver's steering command to the wheels. When the driver turns the steering wheel, the steering column assembly transmits the steering force to the steering gear through a precise mechanical structure, thereby driving the wheels to rotate to achieve vehicle steering.

[0003] Currently, due to the special structure and small space of the cab of low-speed tractors, the existing steering column assemblies of low-speed tractors generally do not have an adjustable function, resulting in the inability to adjust the height of the steering wheel, greatly reducing the driving experience. In the prior art, a Chinese patent with the patent number CN201310210471.0 discloses an adjustment mechanism for an automotive steering column, including a steering column, an upper bracket assembly, a locking unit, and a lower bracket assembly. The upper part of the steering column is assembled with the upper bracket assembly through the locking unit, and its lower part is assembled with the lower bracket assembly. The upper bracket assembly is provided with a support frame with a rectangular frame structure, and the support frame is sleeved outside the steering column. The locking unit is arranged inside the support frame, and both the upper bracket assembly and the lower bracket assembly are fixed on the vehicle body frame.

[0004] Although the above prior art realizes the adjustment of the steering column, there are still the following deficiencies in actual use: the structures of the bracket assembly and the locking unit are relatively complex, occupying a large space. In the case of a small space, the assembly difficulty is large, and it is difficult to adapt to the installation environment of low-speed tractors. Moreover, the adjustment range of the tilt angle is limited, greatly reducing its practicability. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of complex structure, large assembly difficulty, and limited adjustment range in the prior art, and provide a steering column assembly for low-speed tractors, which is reasonably designed, simple in structure, easy to assemble and has a wide adjustment range. It can not only effectively save the occupied space, but also improve the assembly efficiency and is suitable for popularization.

[0006] The utility model is realized through the following technical solutions: A steering column assembly for a low-speed tractor vehicle includes a column bracket assembly, a steering shaft sleeve, and a steering shaft. The steering shaft sleeve is movably sleeved on the steering shaft, and the steering shaft is rotatably connected to the steering shaft sleeve through a bearing. A column upper bracket and a column lower bracket are arranged on the steering shaft sleeve, and the steering shaft sleeve is movably connected to the column bracket assembly through the column upper bracket and the column lower bracket, thereby forming a connection structure capable of adjusting the position of the steering shaft sleeve, that is, adjusting the position of the steering shaft. A locking mechanism is arranged between the column upper bracket and the column bracket assembly. The locking mechanism can lock or loosen the steering shaft sleeve. When the locking mechanism is loosened, the position of the steering shaft can be adjusted.

[0007] A further improvement of the utility model is that the column bracket assembly includes a support plate. Two parallel connecting plates are fixed on one side surface of the support plate, and an installation space for installing the column upper bracket and the column lower bracket is formed between the two connecting plates.

[0008] A further improvement of the utility model is that a horizontal long hole is opened in the upper part of the connecting plate, and a connecting hole is opened in the lower part of the connecting plate.

[0009] A further improvement of the utility model is that the column upper bracket is of a U-shaped structure. The column upper bracket is fixedly sleeved on the steering shaft sleeve. Vertical long holes A corresponding to the horizontal long holes are opened on both side walls of the column upper bracket. The column upper bracket is connected to the upper part of the connecting plate through the horizontal long holes, the vertical long holes A, and the locking mechanism.

[0010] A further improvement of the utility model is that the locking mechanism includes a screw. The screw passes through the column upper bracket and the connecting plate through the horizontal long holes and the vertical long holes A. A handle nut is screwed on one end of the screw, and a fixing nut is screwed on the other end of the screw.

[0011] A further improvement of the utility model is that the column lower bracket includes two parallel fixed plates. The two fixed plates are fixed on the steering shaft sleeve. Vertical long holes B corresponding to the vertical long holes A and corresponding to the connecting holes are opened on the fixed plates. The column lower bracket is connected to the lower part of the connecting plate through the connecting holes, the vertical long holes B, and bolts.

[0012] A further improvement of the utility model is that the bolts adopt stepped bolts.

[0013] A further improvement of the utility model is that an installation hole A is opened in the upper part of the support plate, and an installation bracket is arranged at the lower part of the other side surface of the support plate. An installation hole B is opened on the installation bracket.

[0014] A further improvement of the utility model is that the installation bracket includes two parallel installation plates. The installation plates are fixed on the side surface of the support plate, and the installation hole B is opened on the installation plates.

[0015] A further improvement of the present utility model is that a sleeve corresponding to mounting hole B is fixed between the two mounting plates.

[0016] As can be seen from the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] 1. The pipe column support assembly adopts an integral structure, which is simple in structure and high in strength.

[0018] 2. The locking mechanism adopts the structure of a double-headed bolt and a nut, which is convenient for assembly and operation and has a good locking effect.

[0019] 3. The design of the horizontal long hole and the vertical long hole not only realizes the height adjustment, but also realizes the tilt angle adjustment. At the same time, this design also improves the adjustment range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a specific embodiment of the present utility model.

[0022] Figure 2 It is Figure 1 The sectional view taken along A-A in

[0023] Figure 3 It is Figure 1 The sectional view taken along B-B in

[0024] Figure 4 It is a schematic structural diagram of the pipe column support assembly of a specific embodiment of the present utility model.

[0025] Figure 5 It is Figure 4 The left view of

[0026] Figure 6 It is the steering shaft sleeve of a specific embodiment of the present utility model.

[0027] Figure 7 It is a schematic structural diagram of the upper pipe column support of a specific embodiment of the present utility model.

[0028] 1. Column support assembly; 101. Support plate; 102. Connecting plate; 1021. Horizontal long hole; 1022. Connecting hole; 103. Mounting hole A; 104. Mounting plate; 1041. Mounting hole B; 2. Steering shaft sleeve; 3. Steering shaft; 4. Bearing; 5. Upper column support; 501. Vertical long hole A; 6. Lower column support; 601. Fixed plate; 6011. Vertical long hole B; 7. Locking mechanism; 701. Screw; 702. Handle nut; 703. Fixed nut; 8. Bolt. Detailed implementation mode

[0029] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0030] Now refer to the attached Figure 1-7 , and in combination with specific embodiments, it is described as follows: A steering column assembly for a low-speed tractor vehicle described in the present utility model includes a column support assembly 1, a steering shaft sleeve 2, and a steering shaft 3. The steering shaft sleeve 2 is movably sleeved on the steering shaft 3, and the steering shaft 3 is rotatably connected to the steering shaft sleeve 2 through a bearing 4; a upper column support 5 and a lower column support 6 are arranged on the steering shaft sleeve 2, and the steering shaft sleeve 2 is movably connected to the column support assembly 1 through the upper column support 5 and the lower column support 6, thereby forming a connection structure capable of adjusting the position of the steering shaft sleeve 2, that is, adjusting the steering shaft 3; a locking mechanism 7 is arranged between the upper column support 5 and the column support assembly 1, and the locking mechanism 7 can lock or loosen the steering shaft sleeve 2. When the locking mechanism 7 is loosened, the position of the steering shaft 3 can be adjusted.

[0031] Specifically, the column support assembly 1 includes a support plate 101. A mounting hole A103 is opened in the upper part of the support plate 101. A mounting bracket is arranged at the lower part of the other side surface of the support plate 101, and a mounting hole B1041 is opened in the mounting bracket; the mounting bracket includes two parallel arranged mounting plates 104, the mounting plates 104 are fixed on the side surface of the support plate 101, and the mounting hole B1041 is opened in the mounting plate 104; two parallel arranged connecting plates 102 are fixed on one side surface of the support plate 101, and an installation space capable of installing the upper column support 5 and the lower column support 6 is formed between the two connecting plates 102; a horizontal long hole 1021 for connecting the upper column support 5 is opened in the upper part of the connecting plate 102, and a connecting hole 1022 for connecting the lower column support 6 is opened in the lower part of the connecting plate 102.

[0032] Specifically, the upper pipe column bracket 5 is of a U-shaped structure. The upper pipe column bracket 5 is fixedly sleeved on the steering shaft sleeve 2. Vertical long holes A501 corresponding to the horizontal long holes 1021 are formed in both side walls of the upper pipe column bracket 5. The upper part of the upper pipe column bracket 5 and the connecting plate 102 are connected through the horizontal long holes 1021, the vertical long holes A501 and the locking mechanism 7.

[0033] Specifically, the locking mechanism 7 includes a screw rod 701. The screw rod 701 passes through the upper pipe column bracket 5 and the connecting plate 102 through the horizontal long holes 1021 and the vertical long holes A501. A handle nut 702 is screwed at one end of the screw rod 701, and a fixing nut 703 is screwed at the other end of the screw rod 701. Among them, the screw rod 701 can adopt a double-headed screw rod, and the fixing nut 703 can adopt the form of a nut group. When locking is required, rotate the handle nut 702. At this time, the handle nut 702 and the fixing nut 703 at both ends of the screw rod 701 cooperate to clamp the connecting plate 102 and the upper pipe column bracket 5, thus realizing the function of locking the steering shaft sleeve 2. On the contrary, the steering shaft sleeve 2 can be loosened.

[0034] Specifically, the lower pipe column bracket 6 includes two parallel fixed plates 601. The two fixed plates 601 are fixed on the steering shaft sleeve 2. Vertical long holes B6011 corresponding to the vertical long holes A501 and corresponding to the connection holes 1022 are formed in the fixed plates 601. The lower part of the lower pipe column bracket 6 and the connecting plate 102 are connected through the connection holes 1022, the vertical long holes B6011 and bolts 8.

[0035] The working principle of the present utility model: The pipe column bracket assembly 1 can be fixed on the cab instrument panel through the mounting hole A103 in the upper part of the support plate 101 and the mounting hole B1041 in its lower part, that is, the steering pipe column assembly is fixed on the cab instrument panel. When the height of the steering pipe column assembly needs to be adjusted, the operator rotates the handle nut 702 to loosen the steering shaft sleeve 2 by the locking mechanism 7. At this time, under the action of the vertical long holes A501 and the vertical long holes B6011, the steering shaft sleeve 2 can be moved up and down, thus realizing the height adjustment. At the same time, when the front and rear positions of the steering pipe column assembly also need to be adjusted, that is, when adjusting the tilt angle of the steering pipe column assembly, since the lower pipe column bracket 6 and the connecting plate 102 are rotatably connected through the connection holes 1022, the vertical long holes B6011 and the bolts 8, when the locking mechanism 7 is loosened, the operator can move the steering shaft sleeve 2 back and forth along the horizontal long holes 1021, thus realizing the adjustment of the tilt angle.

[0036] In one embodiment, the bolt 8 adopts a stepped bolt.

[0037] In one of the embodiments, a sleeve corresponding to the mounting hole B1041 is fixed between the two mounting plates 104. The design of the sleeve can enhance the structural strength of the two mounting plates 104, thereby further enhancing the structural strength of the steering column assembly.

[0038] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0039] Terms such as "upper", "lower", "outer side", "inner side", etc. in the specification, claims and above-mentioned drawings of the present utility model, if any, are used to distinguish the relative relationship in position and do not need to be qualitatively defined. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steering column assembly for a low-speed tractor, comprising a column bracket assembly (1), a steering shaft sleeve (2), and a steering shaft (3), characterized in that, The steering shaft sleeve (2) is movably sleeved on the steering shaft (3), and the steering shaft (3) is rotationally connected to the steering shaft sleeve (2) through a bearing (4); a column upper bracket (5) and a column lower bracket (6) are arranged on the steering shaft sleeve (2), and the steering shaft sleeve (2) is movably connected to the column bracket assembly (1) through the column upper bracket (5) and the column lower bracket (6), thereby forming a connection structure capable of adjusting the position of the steering shaft sleeve (2), that is, adjusting the steering shaft (3); a locking mechanism (7) is arranged between the column upper bracket (5) and the column bracket assembly (1), and the locking mechanism (7) can lock or loosen the steering shaft sleeve (2). When the locking mechanism (7) is loosened, the position of the steering shaft (3) can be adjusted.

2. The steering column assembly for a low-speed tractor according to claim 1, wherein, The column bracket assembly (1) includes a support plate (101), and two parallel connecting plates (102) are fixed on one side surface of the support plate (101), and an installation space for installing the column upper bracket (5) and the column lower bracket (6) is formed between the two connecting plates (102).

3. The steering column assembly for a low-speed tractor according to claim 2, characterized in that, A horizontal long hole (1021) is opened in the upper part of the connecting plate (102), and a connecting hole (1022) is opened in the lower part of the connecting plate (102).

4. A steering column assembly for a low-speed tractor, according to claim 3, characterized in that, The column upper bracket (5) is of a U-shaped structure, the column upper bracket (5) is fixedly sleeved on the steering shaft sleeve (2), vertical long holes A (501) corresponding to the horizontal long holes (1021) are opened on both side walls of the column upper bracket (5), and the upper part of the column upper bracket (5) and the connecting plate (102) are connected through the horizontal long holes (1021), the vertical long holes A (501) and the locking mechanism (7).

5. A steering column assembly for a low-speed tractor vehicle according to claim 4, characterized in that, The locking mechanism (7) includes a screw (701), the screw (701) passes through the column upper bracket (5) and the connecting plate (102) through the horizontal long hole (1021) and the vertical long hole A (501), a handle nut (702) is screwed at one end of the screw (701), and a fixing nut (703) is screwed at the other end of the screw (701).

6. The steering column assembly for a low-speed tractor according to claim 5, characterized in that, The column lower bracket (6) includes two parallel fixing plates (601), the two fixing plates (601) are fixed on the steering shaft sleeve (2), vertical long holes B (6011) corresponding to the vertical long holes A (501) and the connecting holes (1022) are opened on the fixing plates (601), and the lower part of the column lower bracket (6) and the connecting plate (102) are connected through the connecting holes (1022), the vertical long holes B (6011) and bolts (8).

7. The steering column assembly for a low-speed tractor according to claim 6, characterized in that, The bolt (8) is a stepped bolt.

8. A steering column assembly for a low-speed tractor vehicle according to claim 7, characterized in that, An installation hole A (103) is opened in the upper part of the support plate (101), and an installation bracket is arranged at the lower part of the other side surface of the support plate (101), and an installation hole B (1041) is opened on the installation bracket.

9. A steering column assembly for a low-speed tractor according to claim 8, characterized in that, The installation bracket includes two parallel installation plates (104), the installation plates (104) are fixed on the side surface of the support plate (101), and the installation hole B (1041) is opened on the installation plates (104).

10. The steering column assembly for a low-speed tractor according to claim 9, characterized in that, A sleeve corresponding to the installation hole B (1041) is fixed between the two installation plates (104).

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