Column tube structure at upper end of steering column

Abstract

A column tube structure at the upper end of a steering column belongs to the technical field of automobile steering mechanisms. The device comprises an outer aluminum column pipe and an inner steering shaft mechanism, the inner steering shaft mechanism is arranged in the outer aluminum column pipe, a steering assembling mechanism is arranged on the upper portion of the outer aluminum column pipe, a locking mechanism is arranged in the middle of the outer aluminum column pipe, and a bolt clamping mechanism, an inclination angle locking mechanism and an inclination angle rotating mechanism are arranged on the lower portion of the outer aluminum column pipe. The inclined angle rotating mechanism is located below the bolt clamping mechanism, the inclined angle limiting mechanism is arranged on the bolt clamping mechanism, the inner steering shaft mechanism comprises a steering shaft in the middle, an upper end bearing combination, a lower end bearing combination, a locking sleeve and a cross shaft joint fork, and the inner circle of the upper end bearing combination and the inner circle of the lower end bearing combination are connected with the steering shaft. The locking sleeve is connected between the upper end bearing combination and the lower end bearing combination, and the cross shaft joint fork is connected to the lower end of the steering shaft. According to the utility model, the steering column can have more activity space, so that a larger adjusting range is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile steering mechanism, and concretely relates to a steering column upper end column pipe structure. BACKGROUND

[0002] The steering column has angle adjustment and height adjustment functions, and with the renewal of automobiles, the demand of drivers for space is getting larger and larger, which means that the steering column needs to have a larger angle adjustment and height adjustment range.

[0003] More and more automobile factories have put forward the requirement of a large adjustment range for the steering column, and the original structure cannot realize a larger adjustment range due to the large volume and the limited space in the vehicle. Meanwhile, more and more automobile factories have put forward the requirement of light weight and high natural frequency for the steering column, and the original structure cannot meet the requirement of higher weight reduction and higher natural frequency due to the large volume. UTILITY MODEL CONTENTS

[0004] The utility model is just aimed at the above problems, makes up for the deficiency of the prior art, and provides a steering column upper end column pipe structure; the utility model can make the steering column have more activity space, thereby realizing a larger adjustment range.

[0005] To achieve the above object, the utility model adopts the following technical scheme.

[0006] The utility model provides a steering column upper end column pipe structure, including outer aluminium column pipe and inner steering shaft mechanism, the inner steering shaft mechanism is arranged in the outer aluminium column pipe, its characterized in being that the outer aluminium column pipe adopts die casting integral forming, the upper part of outer aluminium column pipe is steering assembly mechanism, the middle part is lock assembly mechanism, the lower part is bolt clamping mechanism, inclination locking mechanism and inclination rotating mechanism, the inclination locking mechanism is located in the side of bolt clamping mechanism, the inclination rotating mechanism is located below bolt clamping mechanism, the bolt clamping mechanism is provided with inclination limiting mechanism, the inner steering shaft mechanism includes the steering shaft of middle part, upper end bearing combination, lower end bearing combination, lock sleeve and cross axle joint fork, the inner circle of upper end bearing combination and lower end bearing combination is connected with steering shaft, and the outer circle corresponds with the inner wall of outer aluminium column pipe, the lock sleeve is connected between upper end bearing combination and lower end bearing combination, and the cross axle joint fork is connected in the lower end of steering shaft.

[0007] Further, a plurality of fixed mounting hole positions are arranged on the steering assembly mechanism for assembling the steering wheel.

[0008] Further, the lock assembly mechanism is the ear hole arranged in the middle part of outer aluminium column pipe, which is used for assembling the lock of locking steering wheel.

[0009] Further, the bolt clamping mechanism has a middle slot, and the aluminum column pipe is partially deformed by applying torque to the external bolt.

[0010] Further, the inclination locking mechanism is arranged at an off-axis position of the outer aluminum column pipe.

[0011] Further, the inclination rotating mechanism is a concave structure and is fixed on both sides with other parts respectively.

[0012] Further, the locking sleeve is assembled by interference or welded.

[0013] Further, the cross axle yoke is riveted to the lower end of the steering shaft or is integrally formed with the steering shaft.

[0014] Further, the cross axle yoke has a groove structure inside, and the shaft centers of the ear holes on both sides of the groove structure are completely coincided with the mounting hole shaft centers of the inclination rotating mechanism.

[0015] The utility model has the advantages that.

[0016] The utility model has the characteristics of miniaturization, light weight and high integration, miniaturizes the structure of the traditional upper column pipe, compresses the space, so that the steering column has more activity space, so that the larger adjustment range is realized, and the light weight requirement is realized, multiple functions are integrated, and the inherent frequency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear and obvious, the utility model is further described in detail in the following in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0018] Figure 1 It is the overall three-dimensional structure schematic diagram of the utility model.

[0019] Figure 2 It is the front view of the utility model.

[0020] Figure 3 It is the side view of the utility model.

[0021] Figure 4 It is the sectional view of the utility model.

[0022] Marked in the figure: 1 is the outer aluminum column pipe, 2 is the inner steering shaft mechanism, 3 is the steering assembly mechanism, 4 is the lock assembly mechanism, 5 is the bolt clamping mechanism, 6 is the inclination locking mechanism, 7 is the inclination rotating mechanism, 8 is the inclination limiting mechanism, 9 is the steering shaft, 10 is the upper end bearing combination, 11 is the lower end bearing combination, 12 is the locking sleeve, 13 is the cross axle joint fork, 14 is the fixed mounting hole position. DETAILED DESCRIPTION

[0023] In combination with the drawings, the present embodiment provides a steering column upper end column pipe structure, which comprises an outer aluminum column pipe 1 and an inner steering shaft mechanism 2, the inner steering shaft mechanism 2 is arranged in the outer aluminum column pipe 1, and the two modules together constitute a steering column upper end column pipe.

[0024] The outer aluminum column pipe 1 is integrally formed by die casting, the upper part of the outer aluminum column pipe 1 is a steering assembly mechanism 3, a plurality of fixed mounting hole positions 14 are arranged on the steering assembly mechanism 3, and the steering assembly mechanism 3 is used for assembling a steering wheel.

[0025] The middle part of the outer aluminum column pipe 1 is a lock assembly mechanism 4, the lock assembly mechanism 4 is an ear hole arranged on the middle part of the outer aluminum column pipe 1, and the lock assembly mechanism 4 is used for assembling a lock for locking the steering wheel and realizing the locking ability of the steering wheel.

[0026] The lower part of the outer aluminum column pipe 1 is a bolt clamping mechanism 5, an inclination locking mechanism 6 and an inclination rotating mechanism 7, the inclination locking mechanism 6 is located on the side of the bolt clamping mechanism 5, and the inclination rotating mechanism 7 is located below the bolt clamping mechanism 5.

[0027] The middle part of the bolt clamping mechanism 5 is slotted, and the aluminum column pipe can be locally deformed by applying torque through external bolts, so as to clamp the outer ring of the upper end bearing combination 10 and the lower end bearing combination 11 of the inner steering shaft mechanism 2 in the inside, and realize the axial fixation of the upper end bearing combination 10 and the lower end bearing combination 11.

[0028] The inclination limiting mechanism 8 is arranged on the bolt clamping mechanism 5, the mechanism can be fixed by other parts, limit the angle of the outer aluminum column pipe 1 in a certain telescopic range, avoid the interference of the remaining parts around the large adjustment angle, that is, the variable inclination function, and finally realize the longer telescopic stroke.

[0029] The inclination locking mechanism 6 can be fixed by other parts, realize the constraint of a certain angle, realize the fixation of the steering wheel angle, and the arrangement position of the inclination locking mechanism 6 is different from the traditional arrangement on both sides of the outer aluminum column pipe 1, the inclination locking mechanism 6 is arranged at the off-axis position of the outer aluminum column pipe 1, saves the space, and can further realize miniaturization and light weight.

[0030] The tilt angle rotating mechanism 7 is a concave structure, and can realize the rotating function, i.e. the angle adjusting function, by fixing other parts.

[0031] The inner steering shaft mechanism 2 comprises a middle steering shaft 9, an upper end bearing combination 10, a lower end bearing combination 11, a locking sleeve 12 and a cross axle joint fork 13.

[0032] The steering shaft 9 is responsible for assembling the steering wheel and transmitting the steering wheel torque, the inner circle of the upper end bearing combination 10 and the lower end bearing combination 11 is connected with the steering shaft 9, and the outer circle is corresponding to the inner wall of the outer aluminum column pipe 1.

[0033] The locking sleeve 12 is connected between the upper end bearing combination 10 and the lower end bearing combination 11, and the locking sleeve 12 is assembled by interference or welding.

[0034] The cross axle joint fork 13 is riveted at the lower end of the steering shaft 9 or is forged as an integral structure with the steering shaft 9.

[0035] Different from the traditional structure, the cross axle joint fork 13 has a groove structure inside, which reduces the size, avoids the movement interference, and further realizes the miniaturization and light weight of the system.

[0036] The ear hole axis on both sides of the groove structure is completely coincided with the mounting hole axis of the tilt angle rotating mechanism 7, which can stabilize the angle adjusting force, reduce the additional interference caused by the eccentricity of the mechanical structure, and improve the product performance.

[0037] It can be understood that the above specific description of the utility model is only used for illustrating the utility model and is not limited to the technical solutions described in the utility model embodiments, and those skilled in the art should understand that the utility model can still be modified or replaced equivalently to achieve the same technical effect, as long as it meets the use needs, which is within the protection scope of the utility model.

Claims

1. A steering column upper column tube structure comprising an outer aluminum column tube (1) and an inner steering shaft mechanism (2) provided inside the outer aluminum column tube (1), characterized by, The outer aluminum column pipe (1) is integrally formed by die casting, the upper part of the outer aluminum column pipe (1) is a steering assembly mechanism (3), the middle part is a lock assembly mechanism (4), the lower part is a bolt clamping mechanism (5), an inclination locking mechanism (6) and an inclination rotating mechanism (7), the inclination locking mechanism (6) is located on the side of the bolt clamping mechanism (5), the inclination rotating mechanism (7) is located below the bolt clamping mechanism (5), the bolt clamping mechanism (5) is provided with an inclination limiting mechanism (8), the inner steering shaft mechanism (2) includes a steering shaft (9) in the middle part, an upper end bearing combination (10), a lower end bearing combination (11), a locking sleeve (12) and a cross axle joint fork (13), the inner circle of the upper end bearing combination (10) and the lower end bearing combination (11) is connected with the steering shaft (9), and the outer circle corresponds to the inner wall of the outer aluminum column pipe (1), the locking sleeve (12) is connected between the upper end bearing combination (10) and the lower end bearing combination (11), and the cross axle joint fork (13) is connected to the lower end of the steering shaft (9).

2. A steering column upper column tube structure according to claim 1, characterized by A plurality of fixed mounting hole positions (14) are arranged on the steering assembly mechanism (3) for assembling the steering wheel.

3. A steering column upper column tube structure according to claim 1, wherein The lock assembly mechanism (4) is an ear hole arranged in the middle part of the outer aluminum column pipe (1) for assembling the lock of the steering wheel.

4. A steering column upper column tube structure according to claim 1, characterized by The bolt clamping mechanism (5) is slotted in the middle part, and the aluminum column pipe can be locally deformed by external bolt torque.

5. A steering column upper column tube structure according to claim 1, wherein The inclination locking mechanism (6) is arranged at the off-axis position of the outer aluminum column pipe (1).

6. A steering column upper column tube structure according to claim 1, wherein The inclination rotating mechanism (7) is a concave structure.

7. A steering column upper column tube structure according to claim 1, wherein The locking sleeve (12) is assembled by interference or welded.

8. A steering column upper column tube structure according to claim 1, wherein The cross axle joint fork (13) is riveted to the lower end of the steering shaft (9) or forged into an integral structure with the steering shaft (9).

9. A steering column upper column tube structure according to claim 1, wherein The cross axle joint fork (13) has a groove structure inside, and the shaft centers of the ear holes on both sides of the groove structure completely coincide with the mounting hole shaft center of the inclination rotating mechanism (7).

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