Steering column structure

Abstract

The utility model discloses a steering column structure, which can simultaneously realize locking and releasing of up-down angle adjustment and front-back telescopic adjustment by only one locking component, and comprises a base assembly, a lower shaft assembly, an upper shaft assembly, a telescopic sliding bushing and a locking component, the base assembly is provided with a movable cavity, and a pair of arc-shaped holes are symmetrically formed in the two walls of the upper end of the movable cavity. The cavity shape of the movable cavity is defined by a pair of front and rear end pieces and a pair of left and right side pieces through adjacent edge welding, and arc-shaped holes are formed in the side pieces. The lower end of the lower shaft assembly is pivoted with the lower end of the movable cavity; an elastic clamping part is arranged at the lower end of the upper shaft assembly, a pair of kidney-shaped holes is symmetrically formed in the two walls of the elastic clamping part, and the kidney-shaped holes are opposite to the arc-shaped holes; the telescopic sliding bush is arranged at the upper end of the lower shaft assembly in a sleeving manner and is in sliding fit in the elastic clamping part; the locking assembly is arranged in the arc-shaped hole and the kidney-shaped hole and enables the side piece to clamp or release the elastic clamping part.

Description

Technical Field

[0001] The utility model relates to the technical field of steering columns, in particular to a steering column structure. Background Art

[0002] Due to the low speed and small space of four-wheel low-speed vehicles, the design of the steering column is relatively simple.

[0003] In the prior art, the driver's seat of a four-wheel low-speed vehicle is generally fixed, so the steering column is also fixed, or can only be adjusted up and down. Such a structure cannot meet the needs of people of all body shapes, and cannot allow people of all body shapes to achieve a comfortable driving experience through the up and down angle adjustment and front and rear telescopic adjustment of the steering wheel.

[0004] For this reason, some manufacturers have concentrated the structural design of the up and down angle adjustment and the front and rear telescopic adjustment in the mechanism of the steering column when designing the steering column. Different locking devices need to be designed for different adjustment functions, which makes the structure of the entire steering column complicated, difficult to install and inconvenient to adjust. Even if some existing technologies can achieve common locking of different adjustment functions through a single locking device, their frames generally adopt a U-shaped structure with low structural strength, resulting in a jerky and poor adjustment feel. Utility Model Content

[0005] The purpose of the utility model is to provide a steering column structure that solves the problems existing in the prior art. It only needs to operate one locking assembly to simultaneously achieve the locking and releasing of the up and down angle adjustment and the front and rear telescopic adjustment. It has a simple structure and is easy to operate. It can meet the driving comfort needs of people of most body shapes without adjusting the seat.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A steering column structure, comprising a base assembly, a lower shaft assembly, an upper shaft assembly, a telescopic sliding bushing and a locking assembly; an active cavity is arranged in the base assembly, and a pair of arc-shaped holes are symmetrically arranged on the two walls at the upper end of the active cavity; the active cavity is formed into a cavity shape by welding a pair of front and rear end plates and a pair of left and right side plates through adjacent edges, and the arc-shaped hole is formed on the side plates; the lower shaft assembly is arranged in the active cavity, and its lower end is pivotally matched with the lower end side wall of the active cavity; an elastic clamping part is arranged at the lower end of the upper shaft assembly, and a pair of waist-shaped holes are symmetrically arranged on the two walls of the elastic clamping part, and the waist-shaped holes are arranged opposite to the arc-shaped holes; the telescopic sliding bushing is sleeved on the upper end of the lower shaft assembly, and slidably matched in the elastic clamping part; the locking assembly is arranged in the arc-shaped hole and the waist hole, and enables the side plates to clamp or release the elastic clamping part.

[0008] The locking assembly includes a cam handle, a pivot bolt and a spring group; the pivot bolt is inserted into the arc hole and the waist hole at the same time; the cam handle and the spring group are respectively arranged at both ends of the pivot bolt and abut against the side plate; the cam handle is pivotally connected with the end of the pivot bolt to enable the side plate to clamp or release the elastic clamping part.

[0009] Preferably, the edge of the end piece is covered over the edge of the side piece and is formed with a limiting groove for the cam handle to be embedded.

[0010] The upper end of the active cavity is designed as a fan-shaped cavity.

[0011] The steering column structure also includes a pneumatic spring, and two ends of the pneumatic spring are respectively pivotally connected to the base assembly and the lower shaft assembly.

[0012] Preferably, a notch is provided on the rear side of the lower end of the movable cavity, and a pivot portion is provided on the rear side of the base assembly; one end of the pneumatic spring penetrates into the notch and is pivotally engaged with the lower shaft assembly, and the other end thereof is pivotally engaged with the pivot portion.

[0013] The lower end of the lower shaft assembly is pivotally connected with the lower end side wall of the movable cavity through a rotating shaft sleeve and a gasket.

[0014] A telescopic shaft is arranged in the upper end of the lower shaft assembly, and a telescopic channel is arranged in the lower end of the upper shaft assembly; the telescopic shaft is movably arranged in the telescopic channel.

[0015] The elastic clamping part includes a sleeve arranged at the lower end of the upper shaft assembly, the side wall of the sleeve is provided with an axial opening, a U-shaped movable sheet is connected between the two sides of the axial opening, and the waist-shaped hole is formed on the movable sheet; the telescopic sliding bushing is slidably fitted in the sleeve.

[0016] Preferably, a circumferential surface of the telescopic sliding bushing is provided with a guide flange which is slidably fitted in the axial opening.

[0017] Adjustment limit blocks are arranged on both sides of the upper end of the base assembly, and the cam handle and the spring group respectively abut against the adjustment limit blocks on both sides of the base assembly.

[0018] The upper end of the upper shaft assembly is connected with a steering wheel.

[0019] After adopting the above technical solution, the utility model has the following technical effects:

[0020] The utility model clamps or releases the upper end of the base assembly by rotating the cam handle in the locking assembly, thereby clamping or releasing the inner wall of the movable cavity, thereby clamping or releasing the elastic clamping part of the upper shaft assembly, that is, the elastic clamping part clamps or releases the telescopic sliding bushing and the upper end of the lower shaft assembly. When the locking assembly is in a released state, the movable bolt can be simultaneously adjusted in the arc hole and the waist hole, thereby realizing the adjustment functions of the upper and lower angles of the steering column and the front and rear telescopic adjustment. The user only needs to operate one locking assembly, and the overall structure is simple and easy to operate. Since the movable cavity part of the base assembly is surrounded by the welded end pieces and side pieces of the split body, compared with the U-shaped structure of the integrated structure of the prior art, it is easier to deform when subjected to force to clamp the elastic clamping part, and it is also easier to recover when not subjected to force to release the elastic clamping part. The user has a better operating feel and saves more effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0022] Figure 2 It is an exploded view of a specific embodiment of the utility model;

[0023] Figure 3 It is a cross-sectional view of a specific embodiment of the utility model;

[0024] Description of Figure Numbers:

[0025] 1-base assembly; 1a-end piece; 1b-side piece; 1c-limiting groove; 11-movable cavity; 12-arc hole; 13-notch; 14-pivot; 2-lower shaft assembly; 21-telescopic shaft; 3-upper shaft assembly; 31-elastic clamping part; 311-sleeve; 312-axial opening; 313-movable piece; 32-waist-shaped hole; 33-telescopic channel; 4-telescopic sliding bushing; 41-guide flange; 5-cam handle; 6-jointed bolt; 7-spring group; 8-pneumatic spring; 9-spindle sleeve; 10-gasket; 20-flange nut; 30-adjusting limit block; 40-steering wheel. DETAILED DESCRIPTION

[0026] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0027] refer to Figures 1 to 3 As shown, the utility model discloses a steering column structure, including a base assembly 1, a lower shaft assembly 2, an upper shaft assembly 3, a telescopic sliding bushing 4 and a locking assembly;

[0028] The base assembly 1 is generally installed on the vehicle frame / chassis to fix the overall structure. An active cavity 11 is provided therein. A pair of arc-shaped holes 12 are symmetrically provided on the upper two walls of the active cavity 11. The active cavity 11 is formed by welding a pair of front and rear end plates 1a and a pair of left and right side plates 1b through adjacent edges to form a cavity shape. The arc-shaped holes 12 are formed on the side plates 1b.

[0029] The lower shaft assembly 2 is disposed in the active cavity 11, and its lower end is pivotally connected with the lower end side wall of the active cavity 11;

[0030] The lower end of the upper shaft assembly 3 is provided with an elastic clamping portion 31, and the two walls of the elastic clamping portion 31 are symmetrically provided with a pair of waist-shaped holes 32, and the waist-shaped holes 32 are arranged opposite to the arc-shaped hole 12;

[0031] The telescopic sliding bushing 4 is sleeved on the upper end of the lower shaft assembly 2 and slidably fits in the elastic clamping portion 31;

[0032] The locking assembly is disposed on the arc-shaped hole 12 and the waist hole 32 , and enables the side piece 1 b to clamp or release the elastic clamping portion 31 .

[0033] Preferably, the locking assembly comprises a cam handle 5, a pivot bolt 6 and a spring assembly 7; the pivot bolt 6 is passed through both the arc-shaped hole 12 and the waist-shaped hole 32; the cam handle 5 and the spring assembly 7 are respectively arranged at both ends of the pivot bolt 6 and abut against the side piece 1b; the cam handle 5 is pivotally connected with the end of the pivot bolt 6 to clamp or release the elastic clamping portion 31 of the side piece 1b.

[0034] The cam handle 5 in the locking assembly is rotated to clamp or release the upper end of the base assembly 1, so that the inner wall of the active cavity 11 clamps or releases the elastic clamping part 31 of the upper shaft assembly 3, that is, the elastic clamping part 31 clamps or releases the telescopic sliding bushing 4 and the upper end of the lower shaft assembly 2. When the locking assembly is in the released state, the movable bolt 6 can be simultaneously adjusted in the arc hole 12 and the waist hole 32, thereby realizing the adjustment functions of the upper and lower angles and the front and rear telescopic adjustment of the steering column. The user only needs to operate one locking assembly, and the overall structure is simple and easy to operate. Since the active cavity 11 part of the base assembly 1 is welded and surrounded by the split end piece 1a and the side piece 1b, compared with the U-shaped structure of the integrated structure of the prior art, it is easier to deform to clamp the elastic clamping part 31 when subjected to force, and it is also easier to recover to release the elastic clamping part 31 when not subjected to force, and the user's operation feel is better and more labor-saving.

[0035] Specific embodiments of the present utility model are shown below.

[0036] The edge of the end piece 1a is wrapped around the edge of the side piece 1b, and is formed with a limiting groove 1c for the cam handle 5 to be embedded, so that the cam handle 5 is not easily shaken due to accidental touch.

[0037] The upper end of the movable cavity 11 is designed as a fan-shaped cavity to adapt to the travel requirement when the upper shaft assembly 3 is adjusted up and down.

[0038] The utility model further comprises a pneumatic spring 8 , two ends of which are respectively pivotally connected with the base assembly 1 and the lower shaft assembly 2 .

[0039] Furthermore, a notch 13 is provided on the rear side of the lower end of the above-mentioned movable cavity 11, and a pivot portion 14 is provided on the rear side of the base assembly 1; one end of the pneumatic spring 8 penetrates into the notch 13 and is pivotally engaged with the lower shaft assembly 2, and the other end thereof is pivotally engaged with the pivot portion 14.

[0040] The lower end of the lower shaft assembly 2 is pivotally connected to the lower end side wall of the movable cavity 11 through a rotating shaft sleeve 9 and a gasket 10 .

[0041] A telescopic shaft 21 is arranged in the upper end of the above-mentioned lower shaft assembly 2, and a telescopic channel 33 is arranged in the lower end of the upper shaft assembly 3; the telescopic shaft 21 is movably arranged in the telescopic channel 33, so that the lower shaft assembly 2 and the upper shaft assembly 3 remain coaxial and connected, and the two are telescopically matched.

[0042] The elastic clamping portion 31 includes a sleeve 311 disposed at the lower end of the upper shaft assembly 3, an axial opening 312 is provided on the side wall of the sleeve 311, a U-shaped movable sheet 313 is connected between the two sides of the axial opening 312, and the waist-shaped hole 32 is formed on the movable sheet 313; the telescopic sliding bushing 4 is slidably fitted in the sleeve 311.

[0043] Furthermore, a guide flange 41 is provided on the circumferential surface of the telescopic sliding bushing 4 and is slidably fitted in the axial opening 312 , so as to guide the axial movement of the telescopic sliding bushing 4 .

[0044] One end of the pivot bolt 6 for cooperating with the spring assembly 7 is provided with a flange nut 20 for limiting the spring assembly 7 .

[0045] Adjustment limit blocks 30 are provided on both sides of the upper end of the above-mentioned base assembly 1, and the cam handle 5 and the spring group 7 respectively abut the adjustment limit blocks 30 on both sides of the base assembly 1 to achieve anti-rotation and prevent the cam handle 5 and the spring group 7 from rotating with the movable bolt 6 as the axis.

[0046] The upper end of the upper shaft assembly 3 is connected to a steering wheel 40 .

[0047] The installation process of the utility model is:

[0048] ① The lower shaft assembly 2 is assembled with the base assembly 1 through the rotating shaft sleeve 9 and the gasket 10. The lower shaft assembly 2 swings up and down around the rotating shaft sleeve 9 to achieve up and down angle adjustment;

[0049] ② The telescopic sliding bushing 4 is inserted into the upper shaft assembly 3, the upper shaft assembly 3 is coaxially aligned with the lower shaft assembly 2, the lower shaft assembly 2 is coaxially assembled with the telescopic sliding bushing 4, and at the same time, the external spline on the lower shaft assembly 2 is coaxially assembled with the external spline of the upper shaft assembly 3, so as to realize the telescopic sliding adjustment of the upper shaft assembly 3 and the lower shaft assembly 2;

[0050] ③ The cam handle 5 is connected to the movable bolt 6, the movable bolt 6 passes through the adjustment limit block 4 (handle side), the arc hole 12 of the base assembly 1, the waist hole 32 of the upper shaft assembly 3, the adjustment limit block 4 (spring side) spring group 7 and is locked with the flange nut 20. By swinging the cam handle 5, the upper shaft assembly 3 adjusted into place is locked and fixed with the base assembly 1.

[0051] The adjustment operation of the utility model is: releasing the cam handle 5; holding the steering wheel 40, adjusting it up and down, telescopically to a suitable position; and re-locking the cam handle 5.

[0052] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A steering column structure, characterized in that: It includes a base assembly, a lower shaft assembly, an upper shaft assembly, a telescopic sliding bushing and a locking assembly; An active cavity is provided in the base assembly, and a pair of arc-shaped holes are symmetrically provided on the upper two walls of the active cavity; the active cavity is formed by welding a pair of front and rear end plates and a pair of left and right side plates through adjacent edges to form a cavity shape, and the arc-shaped holes are formed on the side plates; The lower shaft assembly is disposed in the active cavity, and its lower end is pivotally connected to the lower end side wall of the active cavity; The lower end of the upper shaft assembly is provided with an elastic clamping portion, and two walls of the elastic clamping portion are symmetrically provided with a pair of waist-shaped holes, and the waist-shaped holes are arranged opposite to the arc-shaped holes; The telescopic sliding bushing is sleeved on the upper end of the lower shaft assembly and slidably fits in the elastic clamping portion; The locking assembly is arranged on the arc-shaped hole and the waist hole, and enables the side piece to clamp or release the elastic clamping part.

2. The steering column structure according to claim 1, characterized in that: The locking assembly includes a cam handle, a pivot bolt and a spring group; the pivot bolt is inserted into the arc hole and the waist hole at the same time; the cam handle and the spring group are respectively arranged at both ends of the pivot bolt and abut against the side plate; the cam handle is pivotally connected with the end of the pivot bolt to enable the side plate to clamp or release the elastic clamping part.

3. The steering column structure according to claim 2, characterized in that: The edge of the end piece is covered on the edge of the side piece and is formed with a limiting groove for the cam handle to be embedded.

4. The steering column structure according to claim 1, characterized in that: The upper end of the active cavity is designed as a fan-shaped cavity.

5. The steering column structure according to claim 1, characterized in that: It also includes a pneumatic spring, both ends of which are pivotally connected to the base assembly and the lower shaft assembly respectively; a notch is provided on the rear side of the lower end of the movable cavity, and a pivoting portion is provided on the rear side of the base assembly; one end of the pneumatic spring penetrates into the notch and is pivotally connected to the lower shaft assembly, and the other end thereof is pivotally connected to the pivoting portion.

6. The steering column structure according to claim 1, characterized in that: The lower end of the lower shaft assembly is pivotally connected with the lower end side wall of the movable cavity through a rotating shaft sleeve and a gasket.

7. The steering column structure according to claim 1, characterized in that: A telescopic shaft is arranged in the upper end of the lower shaft assembly, and a telescopic channel is arranged in the lower end of the upper shaft assembly; the telescopic shaft is movably arranged in the telescopic channel.

8. The steering column structure according to claim 1, characterized in that: The elastic clamping part includes a sleeve arranged at the lower end of the upper shaft assembly, the side wall of the sleeve is provided with an axial opening, a U-shaped movable piece is connected between the two sides of the axial opening, and the waist-shaped hole is formed on the movable piece; the telescopic sliding bushing is slidably fitted in the sleeve; the circumferential surface of the telescopic sliding bushing is provided with a guide flange slidably fitted in the axial opening.

9. The steering column structure according to claim 2, characterized in that: Adjustment limit blocks are arranged on both sides of the upper end of the base assembly, and the cam handle and the spring group respectively abut against the adjustment limit blocks on both sides of the base assembly.

10. The steering column structure according to claim 1, characterized in that: The upper end of the upper shaft assembly is connected with a steering wheel.

Images