CN205417745U - Car is with middle shaft device who turns to device - Google Patents

Abstract

The utility model relates to a car is with middle shaft device who turns to device, and the buffer gear who constitutes by steering tube, jackshaft, rubber bush and backstop board that wherein uses, its component does, constitutes buffer gear's jackshaft through the cavity axial region that supplies rubber bush to impress to combine with solid axial region that joint mechanism combines, can obtain keep with joint mechanism's bonding strength in for the product of light weight and low price.

Description

Intermediate shaft device for automobile steering device

technical field

The utility model relates to an intermediate shaft device of an automobile steering device.

Background technique

There is a type of an intermediate shaft device of an automobile steering device that has a damper mechanism for absorbing vibration of the intermediate shaft device.

Patent Document 1: Japanese Patent Laid-Open Publication No. H08-170647

The buffer mechanism used in the intermediate shaft device of the automobile steering device is used to absorb the vibration during steering and steering. The larger the capacity of the rubber used in the rubber bush, the better the absorption performance will be. Conversely, in order to obtain steering Rigidity, the smaller the capacity of the rubber, the more rigidity can be improved. In order to realize both the vibration absorption and rigidity, it is necessary to increase the outer diameter of the rubber bush while appropriately reducing the rubber thickness.

However, when the size of the rubber bush is increased, the parts combined with the rubber bush will also become larger and the weight will increase.

Utility model content

In view of the above problems, the present invention provides an intermediate shaft device of a steering device for an automobile, which can realize the vibration absorption and rigidity at the same time, without increasing the size of the rubber bush, and can maintain the connection with the joint mechanism. Lightweight and inexpensive while maintaining strength.

The intermediate shaft device of the automobile steering device of the present utility model is composed of a steering tube 1, a rubber bush 8, an intermediate shaft 4, and a stop plate 9 arranged on the intermediate shaft 4,

The outer diameter of the rubber bushing 8 is pressed and fixed on the inner diameter of the steering pipe 1,

The inner diameter of the rubber bush 8 is press-fitted and fixed on the outer diameter of the intermediate shaft 4, and the intermediate shaft device of the automobile steering device is characterized in that,

The intermediate shaft 4 is composed of a hollow shaft portion 41 and a solid shaft portion 42,

The inner diameter of the rubber bush 8 and the hollow shaft portion 41 provided with the stopper plate 9 is formed larger than the outer diameter of the solid shaft portion 42 ,

The solid shaft portion 42 secures the joint.

Effect of utility model

With this structure, the intermediate shaft 4 of the buffer mechanism is constituted by the hollow shaft portion 41 for press-fit coupling of the rubber bush 8 and the solid shaft portion 42 coupled with the joint mechanism, and it is possible to obtain a Lightweight and inexpensive product.

Description of drawings

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a view taken in the direction of V in FIG. 1 .

FIG. 3 is a view taken in the direction of H in FIG. 1 .

detailed description

1-3 have shown an example of embodiment of this invention. Fig. 1 shows the intermediate shaft device of the steering device. Fig. 2 shows the intermediate axis viewed from the V direction. Fig. 3 shows the intermediate axis viewed from the H direction.

The intermediate shaft device of the automobile steering device of this embodiment is composed of a steering pipe 1, a rubber bush 8, an intermediate shaft 4, and a stopper plate 9 provided on the above-mentioned intermediate shaft 4,

The outer diameter of the above-mentioned rubber bush 8 is press-fitted and fixed on the inner diameter of the above-mentioned steering pipe 1,

The inner diameter of the above-mentioned rubber bush 8 is press-fitted and fixed on the outer diameter of the above-mentioned intermediate shaft 4, and the above-mentioned intermediate shaft device of the automobile steering device is characterized in that,

The intermediate shaft 4 is composed of a hollow shaft portion 41 and a solid shaft portion 42,

The inner diameter of the rubber bush 8 and the hollow shaft portion 41 provided with the stopper plate 9 is larger than the outer diameter of the solid shaft portion 42 ,

The above-mentioned solid shaft portion 42 fixes the joint.

Hereinafter, the intermediate shaft device of the automobile steering system according to the present embodiment will be described more specifically.

At one end of the steering pipe 1 is provided a known damper mechanism 70 described in Japanese Patent Laid-Open No. Hei 08-170647, and an intermediate shaft 4 coupled to the steering column via a joint from the damper mechanism is provided.

The other end of the steering pipe 1 utilizes a well-known fitting structure 80 such as spline fitting and zigzag key fitting, and is telescopically fitted to the steering shaft 2 so that steering torque can be transmitted.

A seal 6 made of synthetic rubber and having a lip is fastened to the inner diameter of the end of the steering tube 1 . When the seal 6 is fixed on the steering tube 1, the lip protrudes from the front end of the steering tube. Even if twisting occurs between the steering shaft 2 and the steering pipe 1 to misalign the axis, the lip can reliably prevent the intrusion of dust or water.

One end of the steering shaft 2 is combined with a joint. The shaft portion of the steering shaft 2 is provided with a groove 7 along the circumferential direction, and a fastening ring 5 made of synthetic resin is attached to the groove 7 .

The fastening ring 5 has a substantially T-shaped cross section, and is composed of a recessed portion 51 , an end portion 52 , and a fitting portion 53 . The fitting portion 53 fits into the groove 7 .

The recess 51 prevents the lip of the seal 6 from coming into contact with the fastening ring 5 when the steering pipe 1 and the steering shaft 2 are contracted and the end of the steering pipe is connected with the end 52 of the fastening ring 5 .

Metal rings are respectively provided on the inner diameter and the outer diameter of the rubber bush 8 . The rubber bush 8 is formed by bonding synthetic rubber between metal rings.

One end of the steering pipe 1 is fitted with the outer diameter of the rubber bush 8 to make the outer diameter larger, and the outer diameter of the rubber bush 8 is pressed and fixed on the inner diameter, and one end of the steering pipe 1 is provided with a press-fit A fastening ring 10 fixed on the outer diameter of the open end of the steering tube 1 .

The inner diameter of the rubber bush 8 is press-fitted and fixed to the outer diameter of the hollow shaft portion 41 of the intermediate shaft 4 , and the end portion of the hollow shaft portion 41 is provided with a first protrusion 45 by caulking.

The stopper plate 9 is press-fitted and fixed to the outer diameter of the hollow shaft portion 41 so as to provide a fixed gap S with the cutout portion 101 provided in the steering pipe 1 . Through this gap S, when the steering torque is small, the rubber absorbs the vibration while allowing the vibration, and when the steering torque is large, the rubber is deformed to eliminate the gap S, and the steering pipe 1 and the stopper plate 9 directly transmit the steering force. steering torque. The other end portion of the stopper plate 9 is similarly provided with a second protrusion 46 by caulking.

A solid shaft portion 42 is provided at the end of the intermediate shaft 4, the inner diameter of the hollow shaft portion 41 is formed larger than the outer diameter of the solid shaft portion 42, and the hollow shaft portion 41 and the solid shaft portion 42 are made of one material through plastic Processing and integral molding.

As described above, the intermediate shaft device according to this embodiment can simultaneously realize the vibration absorption and rigidity without increasing the size of the rubber bush, and can obtain a lightweight and inexpensive product.

Claims (1)

1. a jackshaft device for automobile steering device, it is made up of steering tube (1), rubber bushing (8), jackshaft (4) and the baffle plate (9) being located on described jackshaft (4),

On the internal diameter of described steering tube (1), press-in is fixed with the external diameter of described rubber bushing (8),

On the external diameter of described jackshaft (4), press-in is fixed with the internal diameter of described rubber bushing (8), and the jackshaft device of described automobile steering device is characterised by,

Described jackshaft (4) is made up of hollow shaft (41) and solid shafting portion (42),

Described rubber bushing (8) is formed greatly with the internal diameter of the described hollow shaft (41) being provided with described baffle plate (9) compared with the external diameter of described solid shafting portion (42),

Joint is fixed by described solid shafting portion (42).