JPH0325306A - Rotation restraint device - Google Patents

Abstract

PURPOSE:To restrain the rotation of a body to be restrained and allow other motion by allowing the X-axial motion of the body to be restrained by a horizontal link and allowing the Z-axial motion and motion on a thetaZ axia by a rotary member and a rod. CONSTITUTION:This rotation restraint device is so constituted that links 3 and 3 can swing on pins 2 and 2 as shown by an arrow 14. The rod 9 can rotate on pins 6 and 6 as shown by an arrow 15 together with a sleeve 8 and the rotary member 7, and are slidable in a sleeve 8 as shown by an arrow 16. The rod 9 is further rotatable on its center axis in the sleeve 8 as shown by an arrow 17. A restrained body holder 11 is rotatable on horizontal pins 12 and 12 as shown by an arrow 18. Therefore, the body to be restrained which is held by the restrained body holder 11 is restrained from rotating on the thetaY axis and allowed to move freely in other directions.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotation restraint device that restrains the rotation of a restrained body and allows other movements.

[Problem to be solved by the invention]

There are cases where it is necessary to support a member that moves in various ways by restricting only its rotational movement. For example, when supporting the fixed case of an encoder for measuring the rotation angle of an automobile axle, when supporting parts that are supplied to interlocking equipment, or when supporting cables and fibers attached to movable equipment. This is the case when holding .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a rotation restraint device that restrains the rotation of a restrained body and allows other movements.

[Means to solve the problem]

This problem is solved according to the present invention by providing a horizontal link having one end attached and the other end pivotally connected to an intermediate holding member, and the intermediate holding member being rotatable around a horizontal dashed line substantially perpendicular to the longitudinal direction of this link. a horizontal rotating member supported by the member; a sleeve fixed approximately vertically to the rotating member; a rod rotatably and vertically slidably supported within the sleeve; This problem is solved by providing a fixed bifurcated member and a restrained body holder rotatably supported around a horizontal axis at the lower end of the bifurcated member.

In this case, it is desirable that at least one of the swinging movement, sliding movement, or rotational movement of the horizontal link, rotating member, rod, or restrained object holder is restrained.

(Operation of the invention) With the above configuration, the horizontal link allows movement of the restrained body in the X-axis direction, the rotating member and the rod allow movement in the Y-axis direction,
The rod allows movement in the Z-axis direction and movement around the θZ-axis,
The restrained object holder allows movement around the θχ axis. Therefore, only the rotation of the restrained body around the θγ axis is restrained.

(Example) Next, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a mounting plate that is fixed to an immovable location, and 2.2 denotes vertical pins vertically arranged at intervals on this mounting plate l.

One end of two horizontal links 3.3 are pivotally connected to this vertical bin 2.2. The other ends of the links 3, 3 are pivotally connected to a U-shaped or bifurcated intermediate holding member 4 by pins 5, 5. The links 3, 3 may be arranged at an angle to each other, as shown, or they may be arranged parallel to each other. Furthermore, there may be only one link 3.3.

A horizontal rotating member 7 is attached to the intermediate holding member 4 between the links 3 and 3.
It is rotatably supported around a pin 6.6 which is approximately perpendicular to the longitudinal direction of the. At the center of the rotating member 7,
A sleeve 8 is fixed in a substantially vertical direction. A rod 9 is rotatably and vertically slidably supported within the sleeve 8 via two sliding bearings (not shown). The rod 9 has a bifurcated member 10 fixedly held at its lower end. At the lower end of this bifurcated member 10, a restrained object holder 11 is rotatably supported around a horizontal pin 12, 12. A restrained object holder 11 that directly holds a restrained object (not shown) is shaped like a half ring, and is tightened with screws 13, 13.
Capable of holding a restrained object.

In the case of the rotation restraint device having the above structure, the links 3, 3 are swingable in the direction of the arrow 14 about the bins 2, 2 (movement in the X-axis direction). Rod 9 connects sleeve 8 and rotating member 7
At the same time, it is rotatable in the direction of arrow 15 about the bin 6.6 (movement vJ in the Y-axis direction) and slidable in the direction of arrow 16 within the sleeve 8 (interlocking in the Z-axis direction). The rod 8 is further rotatable about its central axis in the direction of arrow 17 within the sleeve 8 (rotation about the θZ axis).

The restrained body holder l1 is rotatable around the horizontal bin 12.12 in the direction of arrow l8 (rotation around the θχ axis). Therefore, the restrained body held in the restrained body holder 1l is θ
Only rotational movement around the γ-axis is restricted, and movement in other directions is possible.

Next, an example of use of the rotation restraint device will be described with reference to FIG. 4. FIG. 4 shows an example of supporting a fixed case 20 of an encoder (rotation angle detector) attached to a force component force detector 19 of an automobile axle. That is, the aforementioned restraint object holder 11 is the fixed case 2 of the encoder.
0 is held so as not to rotate. Between the encoder fixed case 20 and the protruding shaft 2l of the force component force detector l9,
An encoder main body 22 is arranged. Force component force detector 1
Although not shown in detail, reference numeral 9 is used to measure external forces from various directions received from the road surface and component forces of the driving force of the tires using a built-in strain gauge. This force component force detector 19 is connected to a wheel 23 and an axle hub 24 of the automobile. In addition, in Figure 2, 2
5 is a tire.

The strain gauges of the force component force detector 19 are, for example,
The component forces in the axial and Z-axis directions, and the component forces around the X-axis, Y-axis, and Z-axis are detected. Since the force component force detector 19 is rotating together with the tire 25, the signal of each component force is a signal in a rotating coordinate system. Therefore, it is necessary to convert this component force signal in the rotating coordinate system into a component force signal in the stationary coordinate system. For this purpose, the rotation angle (phase angle) of the tire 25, etc. is detected by an encoder, and a calculation device (not shown) is used to detect the rotation angle (phase angle) of the tire 25, etc. Arithmetic processing is performed together with the component force signal.

Since the axle hub 24, force component force detector 19, encoder, etc. are supported by a suspension system and a steering mechanism while the vehicle is running, they are subject to external forces and steering forces from the ground and are moved in various directions. Exercise. Therefore, the encoder fixed case 20 must also move following this movement. However, in order to measure the rotation angle (phase angle) of the axle, it is necessary to hold the fixed case 20 of the encoder so that it does not rotate. Therefore, the encoder fixed case 20 is supported so as to restrain only its rotational movement and to move freely in other directions using the rotational restraint device shown in FIGS. 1 to 3. In this case, the mounting plate l of the rotation restraint device
is fixed to the car body, bumper, etc.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the rotational restraint device according to the present invention not only controls the rotational movement of the restrained object, but also
At least one movement in other directions may be restricted. Furthermore, the rotation restraint device according to the invention can be used not only for supporting the fixed case of an encoder arranged coaxially with the axle of a motor vehicle, but also for supporting parts that are supplied to a moving device, for example. It can also be used to hold cables and fibers attached to moving equipment.

〔Effect of the invention〕

As mentioned above, the rotational restraint device according to the present invention has the advantage that it can support a restrained object in a manner that restrains the rotation of the restrained object and allows other movements.

[Brief explanation of drawings]

FIG. 1 is a side view of a rotation restraint device according to an embodiment of the present invention;
2 is a plan view of the upper part of the rotation restraint device shown in FIG. 1, FIG. 3 is a front view of the lower part of the rotation restraint device shown in FIG. This is a diagram showing an example of the use of a rotation restraint device. l...Mounting plate, 3.3...
Link, 4... Intermediate holding member, 7... Rotating member,
8... Sleeve, 9... Rod, 10...
・Bifurcated member, 11...Restrained object holder III figure

Claims (1)

[Scope of Claims] 1. A horizontal link having one end pivotally connected to a mounting plate and the other end pivotally connected to an intermediate holding member, and said intermediate holding member rotatable around a horizontal axis substantially perpendicular to the longitudinal direction of this link. a horizontal rotating member supported on the rotating member; a sleeve fixed approximately vertically to the rotating member; a rod rotatably and vertically slidably supported within the sleeve; and a rod fixed to the lower end of the rod. What is claimed is: 1. A rotational restraint device comprising: a bifurcated member; and a restrained body holder rotatably supported around a horizontal axis at the lower end of the bifurcated member. 2. The rotational restraint device according to claim 1, wherein at least one of the swinging motion, sliding motion, or rotational motion of the horizontal link, rotating member, rod, or restrained object holder is restrained.