JPH0452142Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a steering damper that is attached to a steering linkage system to attenuate vehicle shimmy, improve steering stability, straight-line performance, or reduce jerkiness. This invention relates to improvements in the mounting structure of.

[Conventional technology]

As a conventional steering damper mounting structure, one is known that is mounted between a frame and a drag link that constitutes a steering linkage system, for example.

[Problem that the invention attempts to solve]

However, in such a conventional steering damper mounting structure, the swing angle of the steering damper with respect to the drag link due to the suspension stroke is large, so the damping performance of the steering damper shimmy depending on the suspension stroke is , the operating efficiency of the steering damper, such as steering stability, straight-line performance, or reduction of jerkiness, will change, and since the amount of expansion and contraction of the steering damper due to the suspension stroke is large, the damping force of the steering damper that should reduce jerkiness will change. This may occur unnecessarily, and the force applied to the steering wheel may become large. Furthermore, there was a problem in that the frame to which the steering damper was attached was bent, causing the damping force to escape.

This idea was developed by focusing on these conventional problems, and by reducing the swing angle of the steering damper relative to the drag link due to the suspension stroke, it improves the damping performance of the steering damper shimmy and improves steering stability. In addition, it reduces the amount of expansion and contraction of the steering damper caused by the suspension stroke, reducing the force applied to the steering wheel. It is an object of the present invention to provide a steering damper mounting structure that secures damping force by increasing the rigidity of the steering damper and preventing deflection.

[Means for solving problems]

Therefore, the steering damper mounting structure of this invention has a cylinder and a piston rod that is connected to a piston that can slide inside the cylinder. Either one of the cylinder and the piston rod of the steering damper can be connected to a drag link that constitutes a steering linkage system. At the same time, either the cylinder or the piston rod is connected to the panhard rod that constitutes the suspension device.

[Effect]

The steering damper is installed between the drag link that makes up the steering linkage system and the panhard rod that makes up the suspension device, and the drag link and the panhard rod move in the same way depending on the suspension stroke.

Therefore, the swing angle of the steering damper relative to the drag link due to the suspension stroke becomes smaller, so there are fewer changes in efficiency such as damping of the steering damper's shimmy, improvement in steering stability, straight-line performance, or reduction in jerk-back. In addition, since the amount of expansion and contraction of the steering damper due to the suspension stroke is reduced, the force applied to the steering wheel is reduced, and furthermore, the force acting on the steering damper is received by the compression and tension of the drag link and panhard rod, preventing deflection. damping force is ensured.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings.

First, to explain the configuration, in the figure, 1 has a front axle, 2 has a knuckle arm 2a,
Knuckles and 3 are tires supported on the front axle 1 so as to be able to swing from side to side, and a panhard rod 4 constituting a suspension device is arranged approximately parallel to the front axle 1, one end of which is attached to the front axle 1, and the other is attached to the front axle 1. Each end is connected to a vehicle body (not shown) via rubber.

Reference numeral 5 designates a pitman arm. This pitman arm 5 is connected to a sector shaft of a ball screw type steering gear (not shown), and the pitman arm 5 is connected to a knuckle arm 2a by a drag link 6. The left and right nuts 2 each have tie rod arms 7.
is fixed, and tie rod arm 7 is fixed to tie rod 8.
The steering linkage system is composed of the pitman arm 5, the drag link 6, the knuckle 2 having the knuckle arm 2a, the tie rod arm 7, and the tie rod 8.

Reference numeral 9 denotes a steering damper, and the steering damper 9 includes a cylinder 10, a piston (not shown) that can slide within the cylinder 10, and a piston rod 11 fixed to the piston. 9 is arranged between the drag link 6 and the panhard rod 4, and the piston rod 11 is connected to the drag link 6.
The cylinders 10 are connected to the panhard rods 4 through rubber.

Next, the operation of the above embodiment will be explained.

By steering the steering wheel (not shown), the steering force is transmitted from the steering gear (not shown) to the knuckle arm 2a via the pitman arm 5 and the drag link 6, and the left and right tires 3 are rotated via the knuckle 2, tie rod arm 7, and tie rod 8. be steered.

Also, Panhard Rod 4 has front axle 1
supports the lateral load acting between the vehicle and the vehicle body.

The drag link 6 and the panhard rod 4 move in the same way depending on the suspension stroke.
For this reason, the swing angle of the steering damper relative to the drag link due to the suspension stroke becomes smaller, so there are fewer changes in efficiency such as damping of the steering damper's shimmy, improvement in steering stability, straight-line performance, or reduction in jerk-back. . Further, since the amount of expansion and contraction of the steering damper due to the suspension stroke is only the difference in the amount of movement between the small drag link and the panhard rod, the force applied to the steering wheel is reduced. Furthermore, the force acting on the steering damper is reduced by compressing the drag link 6 and panhard rod 4.
Since it is supported by tension, it has high rigidity and prevents deflection, ensuring damping force.

In the embodiment described above, the piston rod 11 of the steering damper 9 is connected to the drag link 6,
Although the cylinder 10 is shown connected to the panhard rod 4, it is of course possible to connect the cylinder 10 to the drag link 6 and the piston rod 11 to the panhard rod 4, respectively.

[Effect of idea]

As explained above, the steering damper mounting structure of this invention includes a cylinder and a piston rod that is connected to a piston that can slide inside the cylinder. Either one of the cylinder and the piston rod of the steering damper constitutes a steering linkage system. Since the cylinder and the piston rod are connected to the panhard rod that constitutes the suspension device, the swing angle of the steering damper with respect to the drag link due to the suspension stroke is reduced. Changes in efficiency such as damping of the steering damper's shimmy, improving steering stability, straight-line performance, and reducing jerking are reduced, and the amount of expansion and contraction of the steering damper due to the suspension stroke is reduced, reducing the force applied to the steering wheel. In addition, since the force acting on the steering damper is received by the compression and tension of the drag link and panhard rod, and deflection is prevented, the movement of the drag link in the steering direction is not affected by the suspension stroke. The effect is that the damping force is ensured against.

[Brief explanation of drawings]

The figure is a plan view showing an embodiment of the steering damper mounting structure of this invention. 1...Front axle, 2...Natsukuru, 2
a...Natsukuru arm, 3...Tire, 4...Panhard rod, 5...Pittman arm, 6...
Drac link, 7... Tie rod arm, 8...
...Tie rod, 9...Steering damper, 10
...Cylinder, 11...Piston rod.

Claims (1)

[Scope of utility model registration request] Either one of the cylinder and the piston rod of a steering damper having a cylinder and a piston rod connected to a piston that is slidable in the cylinder is connected to a drag link constituting a steering linkage system, and the cylinder and the piston rod are connected to a drag link constituting a steering linkage system. A steering damper mounting structure in which one of the piston rods is connected to a panhard rod that constitutes a suspension device.