CN111376966A

CN111376966A - Steering transmission device

Info

Publication number: CN111376966A
Application number: CN201811619916.XA
Authority: CN
Inventors: 黄君; 吴绍传; 李让书; 罗诚; 杨玉峰; 吴涛
Original assignee: Qoros Automotive Co Ltd
Current assignee: Qoros Automotive Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-07-07

Abstract

The invention relates to a steering transmission device (1), which comprises an upper transmission shaft (2), a lower transmission shaft (3), an upper rotating pipe column (4) and an upper pipe column mounting bracket (5), wherein the upper transmission shaft (2) is connected with the lower transmission shaft (3) through a hinge (6), the upper transmission shaft (2) can be rotatably arranged in the upper rotating pipe column (4), the upper pipe column mounting bracket (5) is fixedly connected with the upper rotating pipe column (4), and the upper pipe column mounting bracket (5) can be fixed on a frame, wherein the upper pipe column mounting bracket (5) is provided with two fixing points on the frame, and the positions of the two fixing points are set so that a hinge point of the upper transmission shaft (2) and the lower transmission shaft (3) is positioned on a connecting line of the two fixing points.

Description

Steering transmission device

Technical Field

The invention relates to a steering transmission device which comprises an upper transmission shaft, a lower transmission shaft, an upper rotating pipe column and an upper pipe column mounting support, wherein the upper transmission shaft is connected with the lower transmission shaft through a hinge, the upper transmission shaft can be rotatably arranged in the upper rotating pipe column, the upper pipe column mounting support is fixedly connected with the upper rotating pipe column, and the upper pipe column mounting support can be fixed on a frame.

Background

The steering column is arranged between a steering wheel and a vehicle body of the vehicle, and mainly has the function of transmitting steering force applied to the steering wheel by a driver to a steering transmission shaft and then to a steering tie rod, so that the running direction of the vehicle is changed.

Steering transmission usually includes last transmission shaft, bottom drive shaft, goes up and rotates tubular column, top tubular column installing support, go up the transmission shaft with the bottom drive shaft passes through hinged joint, goes up the transmission shaft and can set up rotatably in last rotation tubular column, top tubular column installing support and last rotation tubular column fixed connection, and top tubular column installing support can fix on the frame. In this regard, the position at which the upper tubular column mounting bracket is fixed to the frame is referred to as the mounting position, and the position at which the upper drive shaft is hinged to the lower drive shaft is referred to as the hard spot.

The steering gear in the market today can be angularly adjusted. However, in the current steering transmission, the mounting position and the hard spot position are not coincident, and the hard spot changes with the rotation of the mounting axis when the column angle is adjusted.

Under the installation condition of the existing pipe column, the upper pipe column or the upper pipe column installation support is connected to the vehicle body through a bolt. Therefore, the angle of the steering wheel can be adjusted in four directions, the steering fluctuation rate and the design hard point can be changed after the angle is adjusted, and the installation position and the design hard point position of the steering column are not on the same axis. When the steering column is adjusted, a design hard point moves up and down, the change of the design hard point causes the change of steering hand feeling, the steering fluctuation rate is large, the moment fluctuates, and customer complaints are caused.

In addition, threads are usually added on the conventional pipe column body to fix the pipe column on the vehicle body, but the threads have low precision and cannot meet the requirement on strength.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a steering gear, by which the position of a hinge point is not changed and torque fluctuation is relatively small when a steering wheel is adjusted by positioning an installation position and a design hard point position on the same axis, so that a better steering feeling is obtained and complaints of customers can be effectively alleviated. In addition, the corresponding amount of computational effort is also relatively small when designing this, thereby shortening the development cycle. At the same time, the assembly of the steering gear is made simpler.

The steering transmission device comprises an upper transmission shaft, a lower transmission shaft, an upper rotating pipe column and an upper pipe column mounting bracket, wherein the upper transmission shaft is connected with the lower transmission shaft through a hinge, the upper transmission shaft is rotatably arranged in the upper rotating pipe column, the upper pipe column mounting bracket is fixedly connected with the upper rotating pipe column, the upper pipe column mounting bracket can be fixed on a frame, the upper pipe column mounting bracket is provided with two fixing points on the frame, and the positions of the two fixing points are set so that the hinge point of the upper transmission shaft and the lower transmission shaft is positioned on the connecting line of the two fixing points.

According to a preferred embodiment of the invention, the upper drive shaft and the lower drive shaft are connected by a cross.

According to a preferred embodiment of the present invention, the upper pipe string mounting bracket is fixed to the frame by a fastener.

According to a preferred embodiment of the invention, the fastening point is configured as a fastening hole, in which a plastic washer is arranged and is fastened using a metal threaded inner ring.

According to a preferred embodiment of the invention, the metal threaded inner ring is provided with a coating.

The steering transmission device has the advantages that: the rotation axis of the installation position coincides with the design hard point at the lower part of the pipe column, so that the design hard point at the lower part of the pipe column is not moved when the angle of the steering wheel is adjusted, the steering hard point is prevented from changing in the adjusting process of the steering wheel, and the torque fluctuation amount after the position of the steering wheel is changed is reduced. The steering handle is better, the design task amount is reduced, and the fatigue caused by overlarge moment fluctuation in the frequent steering process of a customer is avoided. In addition, the cost is reduced, and the assembly is more flexible. In addition, the structure that the plastic gasket is combined with the metal threaded inner ring is added at the installation position, so that the installation torque is stable, and the torque is not declined after the compression. In addition, the plastic gasket enables no metal to be in direct contact with the pipe column, and the problems of abnormal sound and the like in the use process of the pipe column can be effectively prevented.

Drawings

FIG. 1 shows a view of a steering gear in the present invention;

FIGS. 2 a-2 b show enlarged partial views of the position of the upper tubular column mounting bracket of the present invention;

FIG. 3 shows a detailed view of the fixed position in the upper tubular column mounting bracket of FIG. 2;

FIG. 4a shows the threaded inner ring of the metal shown in FIG. 3;

FIG. 4b shows the plastic shim shown in FIG. 3;

FIG. 4c shows a fastener for securing the upper tubular stud mounting bracket to the frame.

List of reference numerals

1 steering transmission device 2 upper transmission shaft

3 lower transmission shaft 4 upper rotating tubular column

5 Upper tubular column installing support 6 hinge

7 fixing hole

9 metal threaded inner ring 10 plastic gasket

11 fastener A two fixation holes define an axis

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, is intended to be illustrative, and not restrictive, and it is intended that all such modifications and equivalents be included within the scope of the present invention.

In the following detailed description, directional terms, such as "left", "right", "upper", "lower", "front", "rear", and the like, are used with reference to the orientation as illustrated in the drawings. Components of embodiments of the present invention can be positioned in a number of different orientations and the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 shows a view of a steering gear according to the invention. As can be seen from fig. 1, the steering gear 1 comprises an upper drive shaft 2, a lower drive shaft 3, an upper drive column 4, and an upper column mounting bracket 5, the upper drive shaft 2 being connected to the lower drive shaft 3 by a hinge 6, the upper drive shaft 2 being connected to the lower drive shaft 3 by a cross-member.

Wherein the upper transmission shaft 2 is rotatably arranged in the upper rotary pipe column 4, the upper pipe column mounting bracket 5 is fixedly connected with the upper rotary pipe column 4, and the upper pipe column mounting bracket 5 can be fixed on a frame (not shown).

Fig. 2a to 2b show enlarged partial views of the position of the upper column mounting bracket 5 in the present invention. It can be seen that the upper pipe string mounting bracket 5 has two fixing points, which in the embodiment shown are configured as fixing holes 7, and that the upper pipe string mounting bracket 5 can be fixed to the vehicle frame by means of fasteners 11, for example bolts 11. Other fastening means are of course also conceivable.

It can also be seen that an axis a is defined by two fixing holes 7, and the hinge point of the upper drive shaft 2 and the lower drive shaft 3 is located on the line connecting the two fixing points, i.e. on the axis a.

Through making the pin joint of upper drive shaft 2 with lower drive shaft 3 be located on axis A, when adjusting the steering wheel, the position of pin joint can not change, and moment fluctuation is less relatively to there is better steering feel, can effectively alleviate customer's complaint. In addition, the corresponding amount of computational effort is also relatively small when designing this, thereby shortening the development cycle.

FIG. 3 shows a detailed view of the fixed position in the upper tubular column mounting bracket of FIG. 2. It can be seen that plastic spacers 10 are respectively arranged in the fastening openings 7, and that the plastic spacers 10 are pressed into the fastening openings 7 using a metallic threaded inner ring 9. FIG. 4a shows the threaded inner ring of the metal shown in FIG. 3; FIG. 4b shows the plastic shim shown in FIG. 3; and FIG. 4c shows a fastener for securing the upper tubular stud mounting bracket to the frame. Through setting up plastic gasket, can effectively prevent to cause abnormal sound scheduling problem in the use.

Of course, liners constructed of POM or nylon may be used instead of plastic gaskets. In addition, for example, a threaded inner ring of metal can be subjected to precision machining and surface treatment, for example, special plating can also be added. Thereby being compressible by the fastener, whereby the torque decay is smaller than if the thread were added directly to the string.

With all the above embodiments, the upper tubular column mounting bracket 5 may also be constructed integrally with the upper transmission shaft 2.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides a turn to transmission (1), turn to transmission includes last transmission shaft (2), lower transmission shaft (3), goes up rotation tubular column (4), goes up tubular column installing support (5), go up transmission shaft (2) with lower transmission shaft (3) are connected through hinge (6), go up transmission shaft (2) can set up with rotating in last rotation tubular column (4), go up tubular column installing support (5) with go up rotation tubular column (4) fixed connection, go up tubular column installing support (5) can fix on the frame, its characterized in that, go up tubular column installing support (5) and have two fixed points on the frame, the position of two fixed points is set for make go up transmission shaft (2) with the pin joint of lower transmission shaft (3) is located on the line of two fixed points.

2. Steering gear (1) according to claim 1, characterized in that the upper drive shaft (2) and the lower drive shaft (3) are connected by a cross.

3. Steering gear (1) according to claim 1 or 2, characterised in that the upper column mounting bracket (5) is fixed to the frame by means of a fastening (11).

4. Steering gear (1) according to claim 3, characterized in that the fastening points are each configured as a fastening hole (7), in which a plastic washer (10) is arranged and the plastic washer (10) is fastened using a metal threaded inner ring (9).

5. Steering gear (1) according to claim 4, characterized in that the metallic threaded inner ring (9) has a coating applied thereon.

6. Steering gear (1) according to claim 1, characterised in that the upper rotary column (4) is integral with the upper column mounting bracket (5).