JPS5944848B2 - Wiring device between fixed member and rotating member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiring device for transmitting power and signals between a fixed member and a rotating member that swings and rotates within 360 degrees with respect to the fixed member.

2. Description of the Related Art Conventionally, there is a device shown in FIG. 1, for example, as a device for attaching a power supply line such as a power supply cable between a fixed member and a rotating member.

This device has a structure in which a rotating member 3 is swingably supported by a bearing 2 on a fixed member 1, and after an electric wire 5 of an electric device 4 such as a motor fixed in the rotating member 3 is drawn out to the rotating member 3. , are introduced into the fixed member 1 with a margin so as to absorb the twist caused by the swinging of the rotating member 3.

This device is used when the swing angle of the rotating member 3 is small.

In addition, when the rotating member 3 has a large swing angle or rotates, a slip ring consisting of a brush 6 provided on the fixed member 1 side and a slip ring 7 provided on the rotating member 3 side as shown in FIG. A ring structure is used.

However, in the conventional device shown in FIG.
If the swing angle of the rotating member 3 increases, the electric wire 5 may become unreasonably twisted.

In addition, in the conventional device shown in Fig. 2, the production cost of the slip ring is high, the number of slip rings increases as the number of wires increases, which increases the installation space, and furthermore, dust and dust can cause poor contact. It has drawbacks such as being easy to use.

The present invention has been made based on the above-mentioned drawbacks, and allows the rotating member to be swung within 360 degrees with respect to the fixed member without applying an unreasonable load to the wiring arranged between the fixed member and the rotating member. An object of the present invention is to provide a wiring device between a fixed member and a rotating member that enables dynamic rotation.

The present invention is characterized in that in a wiring device between a fixed member and a rotating member that is supported by the fixed member and rotates within 360 degrees with respect to the fixed member, a wire conduction portion of the fixed member is provided. The electric wires introduced into the electric wire conduction part of the rotating member are separated into two groups of electric wires (separated in opposite directions in the space between the fixed member and the rotating member), and the electric wires introduced into the electric wire conducting part of the rotating member are divided into An arc-shaped electric wire guide member is provided to guide and move the electric wire group as the electric wire group rotates.

An embodiment of the apparatus of the present invention will be described below with reference to the drawings.

3 and 4 show an example of the apparatus of the present invention, and the same reference numerals as in FIG. 1 indicate the same parts.

Wire conducting portions 8 and 9 are provided on the inner surface of the fixed member 1 and the outer peripheral surface of the rotating member 3, respectively.

As shown in FIG. 4, an arc-shaped electric wire guide member 10 is installed in the space between the rotating member 3 and the fixed member 1 so as to be freely movable along the outer peripheral surface of the rotating member 3.

The wire guide member 10 is a horizontal member 10 as shown in FIG.
It has an H-shaped cross section consisting of a vertical member 10b and a vertical member 10b.

Further, an arcuate member 11 for guiding the electric wire 5 is provided at the end portion of the electric wire guide member 10 in the arcuate direction.

The electric wire 5 is passed through the electric wire guide member 10, and to explain its structure in detail, in FIG. Two groups of electric wires 5a and 5bt are separated within the space.

These wire groups 5a and 5b are run along the outer surface of the wire guide member 10 in opposite directions, and then folded back by the arc member 11 of the wire guide member 10 and connected to the rotating member 3.
is introduced into the wire conduction section 9 of.

Thereafter, the electric wire 5 introduced into the electric wire conduction section 9 is connected to the rotating member 1.
It is connected to the electrical equipment 4 inside.

Next, the operation of the apparatus of the present invention described above will be explained with reference to FIGS. 4 and 5.

Now, when the rotating member 3 is rotated to the right by an angle θ with respect to the fixed member 1 as shown in FIG. Since the wire group 5a is pulled in the clockwise direction by a length corresponding to the movement angle θ, the wire guide member 10 between the wire groups 5a and 5b also moves in the same direction by the angle θ.

As a result, the rotating member 3 is rotated in the right direction by the angle θ (the amount of slack on the other wire group 5b side that occurs due to this is compensated for by the angle θ movement of the wire guide member 10).

In this way, the lengths of the wire groups 5a and 5b are always kept constant and equal to the entire circumference of the wire guide member 10, regardless of the value of the rotation angle θ of the rotating member 3, so that the wires 5 are not bent or strained. The rotating member 3 can move smoothly as the rotating member 3 rotates without applying any force.

As described above, in order to enable the rotating member 3 to rotate up to around 360° in both left and right directions, the wire guide member 10
The arc angle with respect to the center point of the rotating member 3 may be set to approximately 180°.

FIG. 6 shows another example of the device of the present invention.
2, and swing guide rollers 13 that are in contact with the outer peripheral surface of the rotating member 3 are provided at appropriate positions on the side surface of the vertical member 10b of the wire guide member 10.

With this configuration, the wire group 5a.

5b is smoothly guided by wire guide rollers 12 at the folded portion of the wire guide member 10.

Therefore, the life of the wire groups 5a and 5b can be extended.

Furthermore, the swinging guide rollers 13 allow the wire guide member 10 to move smoothly, thereby reducing the burden on the wire groups 5 a v 5 b.

FIG. 1 shows still another example of the device of the present invention. In this example, the same route as the wire group 5at5b is connected between the wire conductive portions 8 and 9 in the space between the fixed member 1 and the rotating member 3. Driving cables 14a and 14b are stretched across the bridge.

With this configuration, when the rotating member 3 rotates, the driving cable 14 that moves with the rotation of the rotating member 3
The wire guide member 10 is moved by a and 14b.

Therefore, no load is applied to the wire groups 5a and 5b, and their lifespan can be increased.

Although the above-mentioned embodiment describes a power supply line to an electrical device, the present invention can also be applied to a hydraulic/pneumatic piping to a hydraulic/pneumatic device in the rotating member 3.

As detailed above, the present invention divides the electric wires introduced from the electric wire conduction part of the fixed member into the electric wire conduction part of the rotating member into two groups of electric wires in the space between the fixed member and the rotating member,
An arc-shaped wire guide member is provided within the wire group, and the wire guide member is moved by rotation of the rotating member to guide and move the wire group without being subjected to an unreasonable load. Compared to the conventional method, electric wires conducted between the fixed member and the rotating member can be wired at low cost and with reliability, and the rotating member can be connected at a large angle (±360
Swing rotation (within 1°) is possible.

[Brief explanation of the drawing]

1 and 2 are vertical cross-sectional views showing a conventional wiring device between a fixed member and a rotating member, FIG. 3 is a vertical cross-sectional view showing an example of the device of the present invention, and FIG. FIG. 5 is a schematic diagram of the configuration of the device of the present invention for explaining the operation of the device of the present invention, and FIGS. 6 and 7 are diagrams of the device of the present invention. It is a longitudinal cross-sectional view which shows another example. 1... Fixed member, 3... Rotating member, 4
...Electrical equipment, 5...Electric wire, 5a,
sb...Wire group, 8゜9...Wire conduction part, 10...Wire guide member, 12...
- Wire guide rollers, 13... Swing guide rollers, 14a, 14b... Drive cables.

Claims (1)

[Scope of Claims] 1. In a wiring device between a fixed member and a rotating member that is supported by the fixed member and performs rocking and rotational motion with respect to the fixed member, the wire conduction is conducted from the wire conducting portion of the fixed member to the rotating member. The electric wires introduced into the section are divided into two groups of electric wires separated in opposite directions in the space O between the fixed member and the rotating member, and a A wiring device between a fixed member and a rotating member, characterized in that an arc-shaped wire guide member is provided for guiding and moving the wire group. 2. The fixed member and rotating member according to claim 1, characterized in that a driving cable is hung or passed in a U-shape between the rotating member, the fixed member, and the end of the wire guide member. Wiring device between.