JPH086973Y2 - Revolving structure power supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a power supply device for a revolving structure having a drive device.

(Prior Art) An example of application of this type of power supply device is, for example, a high-density flat parking lot. This is a system in which a large number of automobiles are densely arranged vertically and horizontally and the automobiles can be carried in and out without providing a carry-in / carry-out path. For example, JP-A-63
-74805, the number of pallets smaller than the pallet space can be arranged vertically and horizontally in the parking lot space, and a pallet can be moved vertically and horizontally by providing a drive device on the floor of each pallet space. Is being done.

As shown in FIG. 3, such a driving device supports a quadrangle pallet (not shown) by four rollers R1 to R4, and drives rollers R1 and R2 by driving motors M1 and M2, respectively. On the other hand, by rotating the four rollers R1 to R4 90 ° horizontally by interlocking with the turning motor M3, the rollers R1 to R4 are rotated.
The upper pallet can be sent vertically and horizontally.

(Problems to be Solved by the Invention) In such a drive device, it is necessary to connect the power supply cable 13 from the fixed-side frame 20 to the revolving structures 10 and 11 having the drive motors M1 and M2. However, if the flexible cable 13 is arranged with a sufficient margin for turning, the redundant portion of the cable 13 may bend,
Twist. In addition, due to the structure of the parking lot, the upper and lower spaces are limited (about 200 mm), and the slack in the cable 13 makes contact with other members, the floor surface, etc. There is a problem that

The present invention has been made to solve such a problem, and its purpose is to bend, twist, or slacken a cable connected to a revolving structure to another member in a limited installation space. An object of the present invention is to provide a power supply device for a revolving structure that can prevent contact with a simple configuration.

(Means for Solving the Problems) The power supply device for a revolving structure of the present invention has a length between the fixed side and the revolving structure that can absorb a change in the distance between them, and the bending direction is freely adjustable. The coil springs are connected and the cable is inserted into the coil springs.

(Operation) When the revolving structure revolves, the coil spring deforms and moves in a smooth curve in response to the revolving structure, and absorbs the change in the distance between the fixed side and the revolving structure. Since the cable also deforms and moves in a coil spring in the same manner as drawing a smooth curve, bending, twisting and slack of the cable are prevented.

(Embodiment) The present invention will be described below based on an embodiment.

As shown in FIGS. 1 and 2, one end of the coil spring 3 is connected to the horizontal revolving structure 1 and the other end is connected to the stationary frame 2 via a saddle 4. The coil spring 3 is a tension spring, has a length capable of absorbing a change in the distance between the horizontal revolving unit 1 and the fixed-side frame 2, and is freely bendable.

A cable 13 connected to the drive motor of the horizontal revolving unit 1 from the fixed-side frame 2 is inserted in such a coil spring 3 in a loosely fitted state.

In the above structure, when the horizontal revolving structure 1 horizontally revolves 90 °, the coil spring 3 extends from the state shown by the solid line in Fig. 1 and deforms and moves along a smooth curve to move between the two saddles 4. Absorb changes in distance. Since the cable 13 is also inserted into the coil spring 3 without restraint,
In the coil spring 3 shown by a chain double-dashed line in the figure, a similar smooth curve is drawn and deformed and moved to prevent the cable 13 from being bent, twisted, and slackened. The coil spring 3 also
It serves not only as a support member for the cable 13 but also as a protective member for covering it.

In the above-mentioned embodiment, the swinging body that horizontally swivels in the high-density parking lot has been described. However, the present invention is not limited to this, and various kinds of power feeding to small electric capacity devices such as robots that swivel and bend,
It goes without saying that the present invention can be applied to a revolving structure within a limited space such as a control signal exchange.

(Effect of the Invention) As described above, in the power supply device according to the present invention, the cable is inserted into the coil spring, so that bending, twisting and slack of the cable are prevented, and power can be smoothly supplied in a limited space. At the same time, the durability of the cable can be improved. Moreover, the coil spring is
Since it serves as both a supporting member and a protecting member for the cable, it has an advantage that the number of parts is very small.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
FIG. 3 is a side view seen from the direction of the line AA in FIG. 3, and FIG. 1 ...... Horizontal revolving structure, 2 ...... Fixed side frame, 3 ...... Coil spring, 13 ...... Cable.

Claims (1)

[Scope of utility model registration request] 1. A power supply device having a drive device for supplying power from a fixed side to a revolving structure that revolves through a cable, and can absorb a change in distance between the fixed side and the revolving structure. A power supply device for a revolving structure, which is connected by a coil spring having a length and capable of bending freely, and wherein the cable is inserted into the coil spring.