JP2603571Y2 - Center arm upright steering link - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a steering link arrangement for a vehicle having an independent suspension.

[0002]

2. Description of the Related Art Conventionally, typical link systems include a symmetric link system, a rack and pinion system, a center arm system, a cross link system, and the like. Among them, the center arm system is used in dump trucks and cab-over type vehicles. As shown in FIG. 5, a center arm a is horizontally arranged, connected to a knuckle arm b on the vehicle side by a tie rod c, and a steering cylinder d is arranged side by side at a position substantially at the same height as the tie rod c. 6 and 7 were the same as FIG.
1 shows a top view and a side view of the conventional center arm type link shown in FIG.

[0003]

However, in a conventional vehicle in which the above-described sentiment swings in a horizontal plane, in the case of a vehicle driven by both the front axle and the rear axle, the center arm is laid out at the center of the axle. When the is placed horizontally,
There is a problem that the center of rotation of the center arm becomes far from the axle, making it impossible to obtain a necessary angle, and making it difficult to rationally arrange steering cylinders for moving the left and right knuckle arms.

[0004]

SUMMARY OF THE INVENTION In view of the above, the present invention has been made in view of the above, and in a traveling vehicle in which a differential case to which a drive shaft is connected is mounted in the center of the vehicle, the center arm is moved to the opposite side of the differential case to the drive shaft. Moreover, the knuckle arm is moved upright and connected to the tie rod so as to be swingable on the axle vertical plane, and the steering cylinder is arranged outside the center arm and higher than the tie rod to move the knuckle arm.

[0005]

As described above, since the center arm can be swung in the plane perpendicular to the axle, a necessary steering link can be formed in a small space in the front-rear direction. In addition, since the steering cylinder is arranged at a position higher than the tie rod, damage to the steering cylinder due to obstacles on the road surface, irregularities, and the like is prevented, so that a cause such as oil leakage due to damage to the cylinder rod can be prevented. . Therefore, according to the present invention, the knuckle arm can be moved by the rationally arranged steering cylinder using the center arm type steering link, so that the required steering angle can be efficiently obtained.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a front shaft steering device according to the present invention, and FIGS. 2, 3, and 4 are a front view, a top view, and a side view, respectively, showing an arrangement of a tie rod steering cylinder.

In FIG. 1, a center arm 4 is arranged upright on the opposite side of a drive shaft 6 connected to a differential case 5, and is mounted upright so as to be swingable on the axle vertical plane. Knuckle arm 7. Steering cylinder 2
The knuckle arm 7 is arranged outside the center arm 4 and at a position higher than the tie rod 3. The output shaft 9 is connected to the left and right from the differential case 5, but this does not cause any particular problem in the layout related to the steering. The tire 1 is steerable by a knuckle arm 7, and is arranged such that the steering cylinder 2 having the other end fixed to the vehicle body exerts its operating force via a connecting pin portion.

Since the center arm 4 is arranged and mounted on the opposite side of the drive shaft 6, the mutual relationship between the drive shaft 6 and the center arm 4 is lost even in the case of a four-wheel drive vehicle, and the rotation of the center arm 4 is achieved. The above-mentioned problem that the center becomes far from the axle and a necessary angle cannot be obtained can be easily solved.

The steering cylinder 2 is also disposed on the opposite side of the drive shaft 6, so that the arrangement in which the steering force applied to the knuckle arm 7 rationally works together with the upright arrangement of the center arm 4 can be easily selected.
The performance of the conventional center arm type steering link can be maintained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a front shaft steering device showing an embodiment according to the present invention.

FIG. 2 is a front view showing an arrangement of a tie rod and a steering cylinder of the embodiment of FIG.

FIG. 3 is a top view showing an arrangement of a tie rod and a steering cylinder of the embodiment of FIG. 1;

FIG. 4 is a side view showing an arrangement of a tie rod and a steering cylinder of the embodiment of FIG.

FIG. 5 shows a conventional center arm type link.

FIG. 6 shows a top view of the conventional link of FIG.

7 shows a side view of the conventional link of FIG.

[Explanation of symbols]

 2 Steering cylinder 3 Tie rod 4 Center arm 5 Differential case 6 Drive shaft 7 Knuckle arm

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D ^7/ 00-7/20

Claims (1)

(57) [Scope of request for utility model registration] 1. A differential housing to which a drive shaft is connected.
The center arm of a traveling vehicle with the center cylinder mounted on the opposite side of the drive shaft of the differential case and upright, connected to a tie rod and mounted to swing on the axle vertical plane, A center arm upright type steering link wherein the knuckle arm is moved outside the arm and at a position higher than the tie rod .