JPH0558566U - Vehicle tie rod linkage - Google Patents

Abstract

(57) [Abstract] [Purpose] The minimum turning radius of the vehicle is reduced, that is, the maximum steering angle is increased, so that the front wheels can be steered greatly.
The purpose is to improve maneuverability. [Structure] At the time of forming the tie rod tube 14, both ends of the tie rod tube 14 are compression-molded by homing, and end sockets 16 screwed to both ends of the tie rod tube 14 are adjusted to match the diameters of both ends of the tube 14. By reducing the diameter, it is possible to increase the stroke amount of both ends of the tie rod tube 14 with respect to the front axle body 10, expand the range in which a practical clearance between the tie rod 13 and peripheral parts can be secured, and maximize steering. The corners can be enlarged.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a tie rod linkage of a vehicle, and more particularly, to improvement of a tie rod tube structure.

[0002]

[Prior Art]

 Conventionally, in a medium- or small-sized truck having a rigid axle type front wheel suspension device, a front axle is configured as shown in FIG. That is, there is provided a tie rod 4 which connects the steering knuckles 2 at both ends of the front axle body 1 to each other via the tie rod arm 3 (see Japanese Utility Model Publication No. 61-24446).

As shown in FIG. 6, a tie rod 4 includes a rod end portion (hereinafter, referred to as an end socket) in which an intermediate steel pipe portion (hereinafter, referred to as tie rod tube) 5 and ball joints 6 at both ends are incorporated. 7), which are screwed so that the length can be adjusted (toe-in adjustment). The tie rod 4 and the tie rod arm 3 are set so that the steering angles of the inner and outer wheels during steering operation satisfy a certain relationship (Ackermann, Jant theory).

[0004]

[Problems to be solved by the device]

 By the way, in medium- and small-sized trucks that have a rigid axle type front wheel suspension system, in order to improve the maneuverability of the vehicle, the minimum turning radius is reduced, that is, the maximum steering angle is increased to increase the front wheels. It is desirable to be able to steer. However, as described above, when trying to increase the maximum steering angle, a practical clearance between the tie rod 4 and peripheral components (even if the road surface input is transmitted from the tire to the tie rod 4 during turning on a rough road, the tie rod 4 interferes with each other) It will be difficult to secure a gap that does not occur.

For example, when the steering wheel is turned during steering operation, the inner ring side of the tie rod 4 approaches the front axle body 1 as the steering knuckle 2 rotates (steering), and at this time the tie rod 4 approaches too much. Then, the suspension spring 8 interferes with the mounting nut of the U bolt 9 for fixing the suspension spring 8 to the front axle body 1. Therefore, in the above case, the maximum steering angle θ is limited to a range in which a practical clearance between the tie rod 4 and the peripheral parts can be secured, and there is a problem that it cannot be expanded further.

Particularly, in recent years, in order to further improve the stability of the vehicle body against rolling of an automobile, a portion for fixing the suspension spring 8 to the front axle body 1 is provided near the end portion of the front axle body 1. There is a tendency to position the tie rod 4 and the mounting nut of the U-bolt 9 as described above, and thus the maximum steering angle θ is further limited.

In view of the conventional problems as described above, the present invention reduces the minimum turning radius, that is, increases the maximum steering angle by simply improving the structure of the tie rod tube, and the front wheel is greatly rotated. The purpose is to enable steering and improve the maneuverability of the vehicle.

[0008]

[Means for Solving the Problems]

 Therefore, according to the present invention, tie rod arms are provided so as to project from the steering knuckles at both ends of the axle body of the vehicle, and these tie rod arms are rotatably connected to both ends of the tie rod, and the tie rods are connected to the tie rod tubes. In a tie rod linkage composed of end sockets fixedly attached to both ends of the tie rod tube, both ends of the tie rod tube are reduced in diameter with respect to other portions.

[0009]

[Action]

 In such a configuration, the stroke amount of the both ends of the tie rod tube with respect to the front axle body can be increased by the amount of the reduced diameter of the both ends of the tie rod tube, and a practical clearance between the tie rod and the peripheral parts can be secured. The maximum steering angle can be increased.

[0010]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1, tie rod arms 12 are integrally projected on the steering knuckles 11 at both ends of the front axle body 10. As shown in FIG. 2, the tie rods 13 connecting the left and right tie rod arms 12 are tie rod tubes. As in the conventional case, the end sockets 16 having the ball joints 15 assembled at both ends of 14 are screwed together.

Here, in this configuration, the configuration of the tie rod 13 has the following features. That is, in FIG. 2, both ends of the tie rod tube 14 of the tie rod 13 are reduced in diameter with respect to the other portions. In this embodiment, when the tie rod tube 14 is formed, both ends of the tube 14 are contracted by homing. In this case, the end socket 16 screwed to both ends of the tie rod tube 14 also has a diameter reduced according to the diameter of both ends of the tube 14.

As a result of reducing the diameters of both end portions of the tie rod tube 14 of the tie rod 13 with respect to the other portions, the following actions and effects are exhibited. That is, the stroke amount of the both ends of the tie rod tube 14 with respect to the front axle body 10 can be increased by the reduced diameter of the both ends of the tie rod tube 14, and a practical clearance between the tie rod 13 and peripheral parts can be secured. The maximum steering angle can be increased.

For example, when the steering wheel is turned during steering operation, the inner ring side of the tie rod 13 approaches the front axle body 10 as the steering knuckle 11 rotates (steering), but both ends of the tie rod tube 14 are moved. The reduced diameter expands the range in which a practical clearance between the tie rod and the mounting nut of the U bolt 17 that fixes the suspension spring 18 to the front axle body 10 can be secured.

Particularly, in such a configuration, in order to further improve the stability of the vehicle body against rolling of an automobile, a portion for fixing the suspension spring 18 to the front axle body 10 is provided at an end portion of the front axle body 10. It is effective to increase the maximum steering angle θ in the case where it is located nearer. In the above embodiment, when the tie rod tube 14 is formed, both ends of the tie rod tube 14 are formed by compression molding by homing. However, as in the embodiment of FIG. 3, the tie rod tube 24 constitutes the intermediate portion thereof. The tube 24a having a large diameter and the two tubes 24b having a small diameter forming both ends of the tie rod tube 24 may be formed, and the tube 24a having a large diameter and the tube 24b having a small diameter may be welded to each other.

In this case, as shown in FIG. 4, both ends of the large-diameter tube 24a are obliquely cut, and both ends of the inclined large-diameter tube 24a and the two small-diameter tubes 24b are weld-bonded to each other. Then, the welding area can be increased and the welding strength can be improved. Although the present invention has been described with reference to the specific embodiments as described above, the present invention is not limited to this, and is attached to the present invention by a person skilled in the art. It should be noted that various changes and modifications can be made without departing from the scope of claims for utility model registration.

[0016]

[Effect of the device]

 As described above, the present invention has a structure in which both ends of the tie rod tube of the tie rod are reduced in diameter with respect to the other part, so that the stroke amount of the both ends of the tie rod tube with respect to the front axle body can be made large, and The range where the practical clearance with peripheral parts can be secured is expanded, and the maximum steering angle can be expanded. As a result, the maneuverability of the vehicle can be improved and the practical effect is great.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a vehicle tie rod linkage according to the present invention.

FIG. 2 is a front view of an example of a tie rod tube according to the above embodiment.

FIG. 3 is a front view of another example of the tie rod tube in the above embodiment.

FIG. 4 is a front view of still another example of the tie rod tube according to the embodiment.

FIG. 5 is a plan view showing an example of a conventional tie rod linkage of a vehicle.

FIG. 6 is a front view of an example of a tie rod tube in the conventional example.

[Explanation of symbols]

 10 Front Axle Body 11 Steering Knuckle 12 Tie Rod Arm 13 Tie Rod 14 Tie Rod Tube 16 End Socket 24 Tie Rod Tube 24a Large Diameter Tube 24b Small Diameter Tube

Claims (1)

[Scope of utility model registration request] Claims: 1. A tie rod arm is provided so as to project from each of steering knuckles at both ends of an axle body of a vehicle, and these tie rod arms are rotatably connected to both ends of the tie rod. A tie rod linkage comprising end sockets fixedly attached to both ends, wherein both ends of the tie rod tube are reduced in diameter with respect to other portions.