CN213473064U

CN213473064U - C-EPS tubular column structure with lock sleeve integrated in driving unit

Info

Publication number: CN213473064U
Application number: CN202021928655.2U
Authority: CN
Inventors: 宋宇航; 陈海明; 张弛中; 诸剑; 董朝阳; 刘振; 李鑫; 孙召辉
Original assignee: Bosch Huayu Steering Systems Co Ltd
Current assignee: Bosch Huayu Steering Systems Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-06-18
Anticipated expiration: 2030-09-07

Abstract

The utility model belongs to the technical field of the electronic power assisted steering system technique of tube column formula and specifically relates to a C-EPS tubular column structure of lock sleeve integration in drive unit, including drive unit casing, lock sleeve, steering column lock, the inside front side integration of drive unit casing has the lock sleeve, and the outer lane of lock sleeve is provided with the lock tooth, and the steering column lock is installed at the top of drive unit casing, and the bottom of steering column lock is equipped with the spring bolt, and the spring bolt inserts in the space between the lock tooth or with the separation of lock tooth. Compared with the prior art, the utility model, the steering column lock is fixed on the drive unit casing, avoids the steering column lock to adjust and burst the in-process motion that contracts at the axial along with the tubular column, and steering column's total length can shorten to realize compacter spatial arrangement, match compacter motorcycle type. Furthermore, the utility model discloses the lock sleeve has bigger diameter, and under the condition of bearing the same size theftproof moment of torsion, the stress that lock sleeve lock tooth department was undertaken is littleer, has reduced the material strength and the hardness requirement of lock sleeve and steering column lock spring bolt.

Description

C-EPS tubular column structure with lock sleeve integrated in driving unit

Technical Field

The utility model belongs to the technical field of the electronic power assisted steering system of column type technique and specifically relates to a C-EPS tubular column structure of lock sleeve integration in drive unit.

Background

In the column type electric power steering system C-EPS, a steering column is a device that connects a steering wheel and an intermediate shaft, and is capable of transmitting a turning moment and providing an assist force according to the intention of a driver. The lock sleeve in the steering column is matched with the automobile steering column lock, and the anti-theft function can be realized by increasing the steering torque. The lock sleeve is usually arranged in the upper pipe column and is matched with a steering column lock fixed on the upper pipe column to realize the anti-theft function.

The steering column lock is fixed on the upper pipe column, and in the process of axially adjusting the pipe column, the steering column lock can move along with the upper pipe column, so that the interference between the steering column lock and peripheral parts in the moving process is avoided, and a sufficient space needs to be reserved in the design, so that the total length of the steering column is difficult to shorten, and more compact space arrangement is realized.

Therefore, it is necessary to design a C-EPS column structure in which a lock sleeve is integrated in a drive unit so as to be able to match with a steering column lock disposed above the drive unit, thereby shortening the total length of the steering column and achieving a more compact spatial arrangement.

Disclosure of Invention

The utility model aims at overcoming prior art's not enough, provide a lock sleeve integrated C-EPS tubular column structure in drive unit, can match with the steering column lock of arranging above drive unit to shorten steering column's total length, realize compacter spatial arrangement.

In order to achieve the purpose, the utility model relates to a C-EPS tubular column structure of lock sleeve integration in drive unit, including drive unit casing, lock sleeve, steering column lock, the inside front side of drive unit casing is integrated to have the lock sleeve, and the outer lane of lock sleeve is provided with the lock tooth, and the steering column lock is installed at the top of drive unit casing, and the bottom of steering column lock is equipped with the spring bolt, and the spring bolt inserts in the space between the lock tooth or with the separation of lock tooth.

The diameter of the lock sleeve is 80-94 mm.

The lock tongue passes through a circular hole at a corresponding position on the drive unit shell and then is inserted into a gap between the lock teeth.

Compared with the prior art, the utility model, designed the integrated C-EPS tubular column structure in the drive unit of lock sleeve, the steering column lock is fixed on the drive unit casing, avoids the steering column lock to adjust and the in-process motion of collapsing at the axial along with the tubular column, and the total length of steering column can shorten to realize compacter spatial arrangement, match compacter motorcycle type. Furthermore, the utility model discloses the lock sleeve has bigger diameter, and under the condition of bearing the same size theftproof moment of torsion, the stress that lock sleeve lock tooth department was undertaken is littleer, has reduced the material strength and the hardness requirement of lock sleeve and steering column lock spring bolt, can adopt material and the processing technology that the cost is lower.

Drawings

Fig. 1 is a schematic view of the present invention.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Referring to fig. 1, the utility model relates to a C-EPS tubular column structure of lock sleeve integration in drive unit, including drive unit casing, lock sleeve, steering column lock, the inside front side of drive unit casing 5 is integrated with lock sleeve 4, and the outer lane of lock sleeve 4 is provided with lock tooth 3, and steering column lock 1 is installed at the top of drive unit casing 5, and the bottom of steering column lock 1 is equipped with spring bolt 2, and after spring bolt 2 passed the circular port that corresponds the position on the drive unit casing 5, inserted in the space between lock tooth 3 or spring bolt 2 and the separation of lock tooth 3.

The utility model discloses lock sleeve 4 is installed in drive unit casing 5, and during normal state, spring bolt 2 separates with lock tooth 3. When the spring bolt 2 of steering column lock 1 stretches into the space between lock sleeve lock teeth 3, lock sleeve 4 and spring bolt 2 can provide great moment of torsion when the steering wheel is rotated to realize the theftproof function.

The utility model discloses a C-EPS tubular column structure of lock sleeve integration in the drive unit, steering column lock 1 is fixed on drive unit casing 5, avoids steering column lock 1 to adjust and the in-process motion of collapsing at the axial along with the tubular column, and steering column's total length can shorten to realize compacter spatial arrangement, match compacter motorcycle type.

When the lock sleeve 4 is matched with the steering column lock 1, as shown in formula

The average stress sigma carried by the lock teeth 3 of the lock sleeve 4 and the lock tongue 2 of the steering column lock 1 is in positive correlation with the anti-theft torque T, and the average stress sigma carried by the lock teeth 3 of the lock sleeve 4 and the lock tongue 2 of the steering column lock 1 is in negative correlation with the contact area A and the lock tooth diameter D of the lock teeth. The utility model discloses in, the diameter of lock tube 4 is 80~94mm, and lock tube 4 has bigger diameter, is about the twice of lock tube diameter in the prior art structure of locking, and under the condition that bears equidimension theftproof moment of torsion T, the stress that 3 departments of lock tube 4 of lock tooth undertake is littleer. Therefore, the requirements on the strength and the hardness of the materials of the lock sleeve 4 and the lock tongue 2 of the steering column lock 1 are reduced, and the materials and the processing technology with lower cost can be adopted.

Claims

1. The utility model provides a C-EPS tubular column structure of lock sleeve integration in drive unit, includes drive unit casing, lock sleeve, steering column lock, its characterized in that: the inside front side of drive unit casing (5) is integrated with lock sleeve (4), and the outer lane of lock sleeve (4) is provided with lock tooth (3), and steering column lock (1) is installed at the top of drive unit casing (5), and the bottom of steering column lock (1) is equipped with spring bolt (2), and spring bolt (2) insert in the space between lock tooth (3) or with lock tooth (3) separation.

2. A C-EPS pipe string structure in which a lock sleeve is integrated in a drive unit according to claim 1, characterized in that: the diameter of the lock sleeve (4) is 80-94 mm.

3. A C-EPS pipe string structure in which a lock sleeve is integrated in a drive unit according to claim 1, characterized in that: the bolt (2) penetrates through a circular hole at a corresponding position on the drive unit shell (5) and then is inserted into a gap between the lock teeth (3).