JPS58461A - Car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a steering device for a vehicle.

In particular, the present invention relates to a vehicle comprising a chassis (in the present text, this includes an integral body structure), a rigid axle attached to the chassis by a suspension system, and steering wheels provided at both ends of the rigid axle. It relates to a steering device. In order to steer such a vehicle, it is attached to the chassis,
and by means of an input member controlled by the vehicle operator and a suitable linkage to a single wheel of the rudder controlling the position of the rudder wheel. is commonly practiced. A disadvantage of such a device is that when the vehicle is in use, when a relative movement occurs between the shaft and the axle, this imparts a steering movement to the wheels. It is an object of the invention to overcome or reduce this disadvantage.

According to the invention, there is provided a chassis, a rigid axle having wheels which are attached to the chassis by a suspension system and which can be steered at both ends thereof, input members and output members which are attached to the chassis and which are controlled by a driver. Namotsukaji number control device,
and a linkage for coupling the output member of the steering control device to the steering wheel for steering the steering wheel, the steering control device being mounted on the chassis of the vehicle for angular movement about a generally longitudinal axis of the vehicle. and the output member is spaced apart from said axis and the steering speed control device is oriented in one direction so that when relative movement occurs between the axle and the chassis, steering motion of the wheels does not occur as a result of this relative movement. A vehicle is provided having a correction link coupling a k-steering speed controller and an axle for angular movement about the axis.

Said steering wheel speed control device may be used as a conventional steering wheel box, and may be coupled to a rotatable input member or to the control of another mechanism mounted anywhere on the steering wheel box or vehicle. The input member that is moved in the direction also includes a steering idler.

The ring gear extends generally longitudinally of the axle and connects the steering wheels to control the relative steering position of the steering wheels, and extends generally laterally of the vehicle and connects to the output member of the steering wheel box and the door. a linkage pivotally connected to the track rod in the center position of the rack rod;
It is also preferable that the correction link extends substantially parallel to the link.

The suspension system to which the axle and the chassis are connected is described in European Patent No. 0,000,822 by the applicant. The coupling supports a generally vertically disposed member pivotally connected to the chassis for movement about a transversely extending axis of the vehicle. Thereby, the center of the axle is constrained to a single movement, one component of which is a substantial translational movement in a vertical plane lying fore and aft of the vehicle, and the other a swivel movement. When applied to a vehicle having such a suspension system, the present invention has the following advantages:
A pivot connection between the track rod and the link connecting the track rod to the output member of the rudder box is provided, and the axle and compensator links are disposed equidistantly on either side of the central swivel connection of the axle. Lying down.

The present invention will be described below with reference to actual cypress wood with reference to the drawings.

FIG. 1 shows an axle beam 10 having a shallow V-shaped plan view supported at its center by a wishbone member 11. As shown in FIG. 9. A vehicle shaft member is connected to the axle beam by a ball joint for a limited degree of free turning movement, and this member is connected to the chassis of the vehicle by a device not shown to extend σ in the lateral direction of the vehicle. provides a pivoting motion about an axis 12. Thus, the central part of the axle beam has a vertical axis extending fore and aft of the vehicle whose components result from the free pivoting movement provided to the wishbone members by the ball joint connection and from the pivot connection of the nine insulin members about axis 12. It is suppressed to one motion, which is a translational motion within a plane. A vehicle suspension system using, inter alia, these elements is described in the applicant's European Patent No. 0.000,822.

At both ends of the axle beam 10, steering wheels 15 are mounted by devices not shown for steering movement about each substantially vertical steering axis.

Truckrotsu)? 14 is arranged inside the axle beam 10 (which has a box-shaped cross-section) and is supported at both ends for sliding movement along elements 15 fixed to the axle beam, and in its central part not shown. supported by the device. A link, indicated schematically at 16.17, connects the track rod 14t to the axle at its ends to move the wheels about their steering axis and to determine the steering position of the wheels relative to each other.

The vehicle chassis supports a steering box 18 which is pivotally connected by a bracket 19 to a chassis member 20 extending in the longitudinal direction of the vehicle. The steering box thus extends in the longitudinal direction of the vehicle and pivots around a substantially horizontal axis 21. The rudder box has a rotary input member 22.

Connected to this member is a steering wheel F operated by the vehicle operator by a convenient universal joint shaft, and has an output member 25tl- connected to an input member by a suitable gearing in the steering wheel box. A link 24 is pivotally mounted between the output member 25 and near the center of the track rod 14, and this link penetrates into the axle beam 10 through a hole formed in the wall of the axle beam 10.

A correction link 25 is pivotally connected between the axle beam and the main body of the steering wheel box adjacent to the output member 25. The compensating link 25 is arranged substantially parallel to the link 24, and when the assembly is viewed from the side (or when viewed in plan as shown in FIG. It is connected to the axle beam 10 at a distance one distance forward from the center of the ball joint that connects to the wishbone member 11, this distance being the distance between the pivot point of the track rod and the link 24 aft of the center of the ball joint. equals distance. In the plan view, the slot 24, the correction link 25, the output member 25, the slot 244t), the point where it connects to the rack quad 14', and the correction link 25i! A virtual parallelogram is formed by connecting the point to the point where it is connected to the axle beam 10.

The operation of this assembly is as follows. First, the steering wheel box is rigidly connected to the chassis of the vehicle, and the correction link 25 is connected to the chassis of the vehicle.
Let's consider one state that does not have the following features. The relative motion that occurs between the axle beam and the vehicle chassis also has a lateral component, which results in a steering wheel movement being applied to the wheels. This is undesirable. However, by rotating the steering wheel box around the longitudinal axis 21 and arranging the correction link 25, such relative movement is caused by the steering wheel box moving as it is. The resultant relative motion of is impossible.

In other words, the lateral motion component of the axle beam 10 is fed back to the rudder box by the correction link 25, so that no wheel or rudder movement occurs.

Such rocking of the steering wheel box has an effect on the input member 22, resulting in a certain degree of steering effect.

In reality, the interlocking ratio that acts between the input member and the output member of the rudder box is such that this effect can be ignored.

Although the invention has been described above in connection with an axle beam supported at its center by a wishbone member 1NC, the invention does not eliminate undesirable steering effects if a conventional steering system is used. can be applied to rigid axles that are spring-coupled by other means.

Another embodiment of the invention is shown in FIG. 6, the device being generally similar to the embodiments of FIGS. 1 and 2 WJ;
Similar parts are indicated by the same number plus 100. However, in the example of real power shown in Figure 5.

Instead of the steering wheel box 18, a steering idler unit 11B is provided, which has an input member 122 and an output member 125. The input member 122 can be operated longitudinally under the control of a steering wheel box mounted at a remote location on the vehicle chassis or from another idler or other mechanism associated with another steering axle. be moved by Uniaxial movement for idler unit 118 is caused by link 25 to cause angular movement of the idler unit about axis 121 in a manner similar to that described above with respect to 1st FyJ and 210th.

[Brief explanation of the drawing]

Figure ts1 is a schematic perspective view of a vehicle portion to which this invention is applied;
FIG. 2 is an enlarged plan view of part 1B4, and FIG. 5 is a perspective view of another practical example of the present invention. Reference numerals in the drawings 10...Axle beam 11...Fish pawn member, 12...Axle line, 15...Steering wheel, 14...Track rod r. 15...Element 16.17...Link. 1B... several boxes of keys, 19... bracket. 20... Chassis member, 21... Axis line 22...
Input member, 25... Output member. 24...link, 25...correction link. 118...Key ring idler unit. 121 - axis line, 122... input member. 125... Output member 125... Link is shown. FIG. 3

Claims (1)

[Scope of Claims] 1. A chassis (20), which is slid relative to the chassis (20) by a suspension system and has steering wheels (13, 1) at both ends thereof.
3) a rigid axle equipped with an input member (22, 122) attached to the vehicle chassis and controlled by the driver;
and a steering wheel number control device (18,118) having an output member (23,123), and a steering wheel number control device (18,1
a linkage (24,
124, 14, 114, 16, 116), and the steering control fct (18, 118) is mounted on the chassis of the vehicle and is connected to an axis (21,
121), its output member (23, 123) t
A correction link (25, 125) is arranged at a distance from this axis for angular movement and for further coupling the steering wheel number control device (18, 118) with the axle (10, 110), which allows the axle E-chassis If a relative movement occurs with respect to said axis (21, 121), a steering control device (18, 118) adjusts said axis (21, 121) in one direction in five so that no steering movement of the wheels occurs as a result of said relative movement. ) A vehicle characterized by being rotated around the vehicle. 1. A track rod in which the linkage generally extends longitudinally of the axle (10, 110) and connects the steering wheels (13, 13) to control their relative steering positions. and generally extends laterally of the vehicle and said output member (2
3,123) and track rod (14,114)
K pivoted links in its central area (24, 12
4), wherein the correction link (25, 125) extends substantially parallel to the link. 3. A joint (26) through which the axle (10, 110) freely pivots [supported at its central portion]. and the correction link to the axle (25°12
5) connection point and the track lid (14°114
3. Vehicle according to claim 2, characterized in that the points of attachment of said first link (24, 124) to said first link (24, 124) are substantially equidistantly spaced on either side of said joint. 4. A car in which the track rod (14, 114) is hollow
The vehicle according to claim 2 or 5, characterized in that the vehicle is disposed within an axle frame (10, 110). & The rudder weir control device (18) is connected to the rotary input member (2
2) A vehicle according to any one of the above claims, characterized in that it also has t. 6. The above-mentioned rudder system - input member whose lid is vertically movable (1
5. Vehicle according to any one of claims 1 to 4, characterized in that it includes an idler unit (118) having an idler unit (118).