JPH078625U - Structure of ball seat for ball stud in steering linkage - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to accurately control the swing in the tilt direction orthogonal to the swing direction for absorbing the swing of the axle of the ball stud. [Structure] A ball stud (7) is provided with a recessed part (15) for restricting swinging of a ball stud (7) in a predetermined direction and at an angle in the periphery of an open end of a ball seat (8).
The swinging direction is a tilting direction substantially orthogonal to the swinging direction of
The convex portion 16 for restricting the swing of the axle of the ball stud 7 for absorbing the swing of the axle is provided, and the swing of the ball stud 7 for absorbing the swing of the axle is secured by the recess 15. Then, the swinging of the ball stud 7 in the falling direction is regulated to a predetermined angle by the convex portion 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ball seat for a ball stud in a steering linkage of a vehicle, and more particularly to a technique for restricting rocking of the ball stud in a falling direction.

[0002]

[Prior art]

 As shown in FIG. 3, a ball stud 5 is provided at a connecting portion of both ends of the drag link 3 that connects the pitman arm 2 on the steering gear box 1 side of the vehicle steering linkage and the axle side steering arm 4. (See Japanese Utility Model Publication No. 61-123267 and Japanese Utility Model Publication No. 57-85620).

As the ball stud 5, a ball stud having a swing angle sufficient to absorb the swing of the axle is used.

[0004]

[Problems to be solved by the device]

 However, in such a conventional configuration, the ball stud 5 swings at the same swinging angle all around the ball stud 5, and therefore, when the swinging angle is set to sufficiently absorb the swinging of the axle, The situation where the drag link 3 collapses occurs. The drag link 3 swings as shown in FIG. 3 and FIG. 4 against the axle swing in the direction of arrow A in FIG. 3 and FIG.

In order to cope with such a fall of the drag link 3, it is necessary to secure a sufficient clearance between the drag link 3 and other parts in consideration of the fall. It is designed to give a large bend to. In order to give a large bend to the drag link 3, it is necessary to increase the tube diameter of the drag link 3 or increase the strength of the drag link 3 by using a peeling bar. Inconvenience has occurred.

The present invention has been made in view of the above, and it is an object of the present invention to regulate the swing of a ball stud in a tilt direction orthogonal to the swing direction for absorbing the swing of the axle with a simple structure. To do.

[0007]

[Means for Solving the Problems]

 The present invention is a ball that swingably supports the end portion of a ball stud provided at the end of the drag link that connects the pitman arm of the steering linkage and the steering steering arm on the axle side. In the structure of the seat, a concave portion for restricting the swinging of the ball stud axle in a predetermined direction and an angle for absorbing the swing of the axle of the ball stud, and the swinging of the ball stud And a convex portion for restricting swinging in a tilting direction substantially orthogonal to the direction, the swinging being smaller than a swinging angle for absorbing swinging of the axle.

[0008]

[Action]

 In such a configuration, it is assumed that the swing of the ball stud in the predetermined direction and angle for absorbing the swing of the axle is secured by the concave portion, while the swing of the ball stud in the falling direction is regulated by the convex portion. It is not necessary to secure a large clearance between the drag link and other parts to prevent the drag link from collapsing, and there is no need to increase the bend of the drag link or increase the tube diameter more than necessary. The weight of the link can be reduced.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, both ends of the drag link 6 are connected to a pitman arm and an axle side steering arm of a steering linkage, and a ball stud 7 is provided at the connecting portion. An end portion 7A of the ball stud 7 is swingably supported by a ball seat 8 provided at an end portion of the drag link 7. The ball stud 7 is a non-greasing type, and a plurality of divided seat members 9 and 10 are interposed between the outer peripheral surface of the end portion 7A of the ball stud 7 and the inner peripheral surface of the ball seat 8. The seat member 10 in contact with the outer peripheral surface of the bottom portion of the end portion 7A is biased by a spring 11. A cylindrical dust seal 12 is mounted on the outer peripheral surface of the open end peripheral portion of the ball seat 8, and the inner peripheral surface of the end portion of the dust seal 12 opposite to the mounting side contacts the outer peripheral surface of the shaft portion 7B of the ball stud 7. An end portion of an axle side steering arm or a pitman arm 13 is fitted and attached to a shaft portion 7B of the ball stud 7, and is fastened and fixed to a nut 14 fitted to an outer periphery of a tip end of the shaft portion 7B.

Here, a concave portion 15 that restricts swinging of the ball stud 7 in a predetermined direction and angle for absorbing swinging of the axle of the ball stud 7 is provided around the opening end peripheral portion of the ball stud 7. A protrusion 16 for restricting swinging in a tilting direction substantially orthogonal to the swinging direction, the swinging being smaller than a swinging angle for absorbing swing of the axle, is provided. There is.

That is, with respect to the ball seat 8 shown in FIG. 2 (A), on both sides corresponding to the swinging direction in which the swinging of the axle of the ball stud 7 at the peripheral portion of the opening is absorbed, FIG. As shown in FIG. 3, each of the scraped-off portions C is formed, and the scraped-off portion C is formed as the concave portion 15, and the rest of the opening end peripheral portion of the ball seat 8 is formed as the convex portion 16.

According to this structure, the swinging of the ball stud 7 in the predetermined direction and angle θ for absorbing the swing of the axle is restricted by the concave portion 15, while the swinging of the ball stud 7 in the tilting direction is restricted. It is regulated by the convex portion 16. In this way, the swinging of the ball stud 7 for absorbing the swing of the axle is secured by the concave portion 15, while the swinging of the ball stud 7 in the tilting direction is restricted to a predetermined angle by the convex portion 16. Against the expected collapse of the drag link, it is not necessary to secure a large clearance between the drag link and other parts, and it is not necessary to unnecessarily increase the bend of the drag link or increase the tube diameter. Therefore, it becomes possible to reduce the weight of the drag link.

As described above, the present invention has been described with reference to the specific embodiments, but 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 the utility model registration claim.

[0014]

[Effect of device]

 As described above, according to the present invention, in the steering linkage, a predetermined portion for absorbing the swing of the axle of the ball stud is provided at the opening end peripheral portion of the ball seat that supports the end portion of the ball stud swingably. A recess for controlling the swinging of the ball in the direction and the angle, and a swinging in a tilting direction substantially orthogonal to the swinging direction of the ball stud, the swinging angle being smaller than the swinging angle for absorbing the swing of the axle. Since a convex part that controls the swing of the ball stud is provided, the swing of the ball stud in the predetermined direction and angle to absorb the swing of the axle of the ball stud is ensured in the recess while the tilt direction of the ball stud is secured. The swing can be regulated by the convex part, and it is not necessary to increase the bend of the drag link or increase the tube diameter more than necessary, and the weight of the drag link can be reduced. It is made of use effect size.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the structure of a ball seat for a ball stud in a steering linkage according to the present invention.

FIG. 2 is a perspective view illustrating a method of forming a concave portion and a convex portion in the same embodiment.

FIG. 3 is a perspective view showing a configuration of a steering linkage.

FIG. 4 is a front view illustrating a conventional problem

FIG. 5 is a plan view illustrating a conventional problem

[Explanation of symbols]

 6 Drag Link 7 Ball Stud 7A End 8 Ball Seat 15 Recess 16 Convex

Claims (1)

[Scope of utility model registration request] 1. An end portion of a ball stud provided at a portion connecting each arm and a drag link is swingably supported at both ends of a drag link connecting a pitman arm of a steering linkage and an axle side steering arm. In the structure of the ball seat, a recess for restricting swinging of the axle of the ball stud in a predetermined direction and angle for absorbing swing of the axle of the ball stud, and a swinging direction of the ball stud A steering linkage which is provided with a convex portion which regulates swinging in a tilting direction substantially orthogonal to the swinging angle and which is smaller than a swinging angle for absorbing swinging of the axle. Of ball seats for ball studs in Japan.