JPH0115469B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable winding device used for purposes such as communication and power supply.

When communicating or supplying power between a stationary device or device (hereinafter referred to as a fixed device) and a moving device or device (hereinafter referred to as a mobile device), a specified cable is used to connect the fixed device and the mobile device. Connections have already been made to achieve the desired communications and power supply.

A conventional cable winding device of this type will be briefly described with reference to FIGS. 1 and 2. Inside the casing 1, from its axis toward the outer periphery, there are a central cylinder 2, a fixed frame 3, and a winding cylinder 4. are provided concentrically, and the fixed end 5a side of the cable 5 is led out from the outer periphery of the central tube 2 to the slit 6 of the same tube 2 and the open tube end 7, and a fixed length from the fixed end 5a is wound up. The remaining portion after being spirally wound within the cylinder 4 is pulled out from the slit 8 of the winding cylinder 4 and wound spirally around the outer periphery of the winding cylinder 4, and is also used as a cable. The unwinding end 5b of 5 is the casing 1
It is pulled out from the slit 9.

Since a spring material is embedded in the cable 5 in the above, the cable 5 inside the winding cylinder 4
The spiral portion always acts to expand its winding diameter due to the restoring force of the spring material, and as a result, a winding force is generated in the direction of the arrow X in FIG. The spiral portion 5 is wound and held on the outer periphery of the winding cylinder 4 by the winding force in the direction of the arrow X.

On the other hand, when the unwinding end 5b of the cable 5 is pulled out in the direction of the arrow in FIG. You can now pull it out of the casing.

Of course, when this pulling force is released, the pulled out cable 5 is wound around the outer periphery of the winding cylinder 4 by the winding force in the direction of the arrow X, and at this time the winding cylinder 4 is moved in the opposite direction. It starts to rotate.

The devices shown in FIGS. 1 and 2 described above are a type of automatic winding device, and therefore, they are used as winding devices for the cable that connects the moving device and the fixed device, since they do not cause excess slack. It seems that it is suitable for this purpose.

However, with the devices shown in FIGS. 1 and 2, a large pulling force is required to unwind the cable 5, and when unwinding, an unreasonable force is applied to the cable 5, causing the cable 5 to be damaged at an early stage. There are problems such as fatigue and furthermore, the winding diameter of the cable 5 becomes too large.

In other words, since a winding force in the direction of arrow X is always acting on the cable 5, a large force is required to pull out the cable 5, and a winding force in the direction of arrow Since the cables 5 and 5 are in opposition, a strong winding force acts on the spiral portion of the cable 5 on the outer periphery of the winding cylinder 4 until the cable 5 overcomes the pulling force Y and is unwound. When unwinding a section, a large frictional force acts on the front and back surfaces of the cable 5 in the overlapping state, which causes early fatigue and wear of the cable 5, and further reduces the internal space of the winding cylinder 4. Wind the cable 5 around the inner and outer circumferences using the
Since the winding cylinder 4 is wound up, it is impossible to reduce the size of the winding cylinder 4, and the winding diameter becomes large, which tends to cause rotational runout.

In order to solve the above-mentioned problems, the present invention consists of an inner winder and an outer winder as important parts of this kind of winding device, and connects the two winders relative to each other, and has a cable routing structure that spans these two winders. By achieving this using special means, communication and power supply across fixed and mobile devices can be satisfactorily achieved.

The configuration of the present invention will be explained below with reference to illustrated embodiments.

In FIGS. 3 and 4 showing the first embodiment of the present invention, 10 is an inner winder having an inner space 11 for winding, 12 is an outer winder having an outer space 13 for winding, and 14 is an inner winder having an inner space 11 for winding. 15 is a hollow rotating shaft for outer winding, 16 is a moving device, and 17 is a fixing device.

The moving device 16 in the above is, for example, a stacker crane, a reclaimer, etc., and this moving device 16 includes the reducers 1 which are combined with each other.
8, a torque motor 19 and an electromagnetic brake 20 are installed, and the rotary shaft 14 is incorporated into the speed reducer 18 to receive power from the speed reducer 18 and is rotatably supported.

On the other hand, the outer winder 12 is attached to one end (right end) of the outer winding rotating shaft 14 in FIG. It is connected to one side (right side).

On the other hand, the inner winder 10 is fixedly supported via a hollow arm 23 protruding from the moving device 16 and a fixture 24 provided at the upper end of the vertical part of the arm 23, and in this state, the inner winder 10 Reference numeral 10 denotes a bearing receiving portion 2 that is loosely fitted through the outer periphery of the inner winding rotating shaft 15 and protrudes from the right side wall of the inner winder 10.
A bearing 26 is interposed between the inner winding rotating shaft 15 and the outer periphery of the inner winding rotating shaft 15.

In the above state, the inner winder 10 and the outer winder 1
2 and both rotating shafts 14 and 15 have a common axis in a horizontal state as their central axis.

FIG. 5 shows the internal winding space 11 of the inner winder 10.
1 of the elastic cables 27 loaded in a spiral state to
This is an example.

The elastic cable 27 in FIG. 5 is, for example, a communication line 28, 28, 28, . . . made of optical fiber or the like.
Its constituent members are highly elastic members 29, 29, 29 with high spring properties mainly made of metal, and a covering member 30 made of rubber, plastic, etc. , 29, 29 are arranged in parallel at a predetermined interval, and these highly elastic members 2
A plurality of communication lines 28, 28, 28... are arranged in parallel between the high elasticity members 29, 29, 29 and the communication line 2.
8, 28, 28, . . . are lined up on the same horizontal axis, and a covering member 30 is applied to their outer peripheries.

The elastic cable 27 in FIG. 5 is loaded in a spiral state into the winding internal space 11 of the inner winder 10 as shown in FIGS. 3 and 4, and this state is clearly shown in FIG. has been done.

In other words, in FIG. 6, the elastic cable 27 is loaded into the internal winding space 11 of the inner winder 10 in a spiral state, and the winding start end 27a is connected to the fastening part 31 of the inner winding rotation shaft 15. The rotating shaft side slit 3
2, and the extra length 27b on the winding start end 27a side is introduced into the rotating shaft 15 through the slit 32, while the winding end 27c of the elastic cable 27 is attached to the stop of the inner winder 10. It is fixed in the vicinity of the inner winder side slit 34 via the attachment part 33, and the extra length 27d on the winding end 27c side is attached to the slit 3.
4 to the outside of the inner winder 10.

In FIG. 6, when the inner winding rotating shaft 15 is rotated in the direction of the arrow, the spiral diameter of the elastic cable 27 is reduced, and the elastic cable 27 is rotated in the direction of the arrow.
Since highly elastic members 29, 29, 29 are buried in the cable 7, the cable 27 stores elastic force in the direction of expanding its spiral diameter.
Therefore, when the rotational force in the direction of the arrow is released, the inner winding rotating shaft 15 automatically rotates in the direction of the arrow due to the elastic force of the stored energy state.

In the above, the outer winder 12 and both rotating shafts 14 and 15
Since these three parts are interconnected, they will rotate together.

7A and 7B show examples of the composite cable 35 loaded into the winding external space 13 of the outer winder 12.

In FIG. 7A, there are multiple communication lines 37, 37, 3 such as optical fibers around the tension member 36.
7... are twisted together, and a covering member 38 is applied to the outer periphery, and a plurality of power lines 39, 39, 39... are further twisted around the outer periphery of the covering member 38, and an insulating covering member 40 and an outer sheath are applied to the outer periphery of the power lines 39, 39, 39... 41, and its cross-sectional shape is circular.

In FIG. 7B, there are a plurality of power lines 39 covered with an insulating coating member 40, and a plurality of communication lines 37, 37, 37, . . . made of optical fiber aggregates covered with a coating member 38 having a stainless steel braid. These are covered with an external sheath 41, and the cross-sectional shape thereof is a flat quadrilateral.

In the case of FIGS. 3 and 4, the composite cable 35 shown in FIG. ing.

That is, the composite cable 35 is wound in a spiral around the outer periphery of the hollow winding shaft 42 of the outer winder 12 in FIG. starting edge 3
The extra length 35b on the side 5a is introduced into the winding shaft 42 through the slit 43 of the hollow winding shaft 42, and the winding start end 35c side is connected to the fixing device 1 as described later.
7 predetermined locations.

Next, the elastic cable 27 and the composite cable 35
and both cables 27, 3
5 to predetermined locations of the moving device 16 and the fixing device 17, respectively, will be explained.

In FIG. 3, the winding start end 35c of the composite cable 35 is connected to a fixing device 17 having optical transmission system equipment, power supply equipment, etc. At this time, the end of the winding end 35c is the final terminal. is firmly fixed to the fixing device 17, and the communication lines 37, 37, 3 exposed from the final terminal are
7..., the power lines 39, 39, 39... are the fixing device 17
It is connected to a predetermined device (not shown) inside.

On the other hand, each communication line 28 is exposed by the necessary length from the extra length part 27b of the elastic cable 27, and each communication line 37 and each power line 39 are also exposed from the extra length part 35b of the composite cable 35. In this state, both communication lines 28 and 37 are connected to each other within the hollow winding shaft 42 of the outer winder 12.

On the other hand, the extra length 27 in the elastic cable 27
d indicates the inner winding rotating shaft 15, the fixture 24, and the arm 23.
The communication line 28 at the end of the extra length 27b is connected to communication equipment (not shown) installed in the mobile device 16, Furthermore, the power line 39 exposed at the extra length 35b of the composite cable 35 is connected to a slit-type current collector (a combination of a slit ring and a brush) attached to the rotating shaft 14 via the inside of the outer-wound rotating shaft 14. ) 44, and a lead wire 45 of this current collector 44 is connected to electrical equipment (devices including the torque motor 19 and the electromagnetic brake 20) installed in the moving device 16.

FIGS. 3 and 4 in the first embodiment of the present invention
In the figure, when the torque motor 19 is rotated with the movement of the moving device 16 and the outer winding rotating shaft 14 is rotated, the outer winder 12 attached to the rotating shaft 14 and the outer winder The inner winding rotating shaft 15 connected to the inner winding shaft 12 is both rotated clockwise (corresponding to the direction of the arrow in FIG. 6).

Due to this rotation, the unwinding end 35c of the composite cable 35 is unwound in the outer winder 12, and the elastic cable 27 is unwound in the inner winder 10 as explained in FIG. As the spiral diameter contracts, the winding force in the direction of the arrow in FIG. 6 is accumulated.

When the rotation of the torque motor 19 is stopped and the stopped state is maintained by the electromagnetic brake 20, the unwound composite cable 35 maintains its unwound state.

Next, when the braking force of the electromagnetic brake 20 is released while the torque motor 19 is stopped and the moving device 16 is returned to its original state, the elastic cable 27 moves in the inner winder 10 in a direction in which the spiral diameter is expanded. The inner winding rotating shaft 15 is rotated in the direction of the arrow in FIG. 12 into the external winding space 13.

Next, a second embodiment and a third embodiment of the present invention will be described.

In the second embodiment shown in FIG. 9, an inner winding rotating shaft 15 is installed inside the outer winding rotating shaft 14, and an inner winding device 10 is installed corresponding to the left end of the inner winding rotating shaft 15. It is something that

In this case, the arm 23 is omitted, but the rest of the structure is substantially the same as that of the first embodiment.

In the third embodiment shown in FIG. 10, the inner winding rotating shaft 15 in the second embodiment is replaced with the outer winding rotating shaft 14.
Therefore, the inner winder 10 is installed corresponding to the left end of the outer winding rotating shaft 14, and the current collector 44 is installed on the outer winding rotating shaft 14 side.

In this third embodiment, the number of parts is reduced compared to the second embodiment, and the cable wiring connection is also simplified.

As explained above, the cable winding device according to the present invention has an inner winder that has an internal space for winding and is loosely fitted around the outer circumference of the rotating shaft, and an inner winder that has an external space for winding and is fixed to the rotating shaft. The outer winder and the outer winder are arranged relative to each other with a common axis as the central axis, and the inner winder is fixed via a fixture so as not to rotate, and the inner winder is provided with a space within the winding space of the inner winder. An elastic cable having a communication line is loaded in a spiral state, and a composite cable having a communication line and a power line is unwound in the winding inner space of the outer winder. , the winding start end of the elastic cable is fixed to the rotating shaft, and the extra length on the winding start end side is drawn into the rotating shaft, and the winding end of the elastic cable is fixed to the rotating shaft. The end is fixed to the circumferential surface of the inner winder, and the extra length at the end of the winding is pulled out of the inner winder, and communication in the extra length at the start of winding of the composite cable is carried out. A wire is drawn into the outer winder, and the communication line end in the extra length part on the winding start side of the elastic cable and the communication line end in the extra length part on the winding start side of the composite cable are connected to each other. They are interconnected, and the power lines at the extra length on the winding start side of the composite cable are connected to a slip-type current collector mounted on the rotating shaft.

Therefore, when using the cable winding device of the present invention, the following characteristic effects can be obtained.

In other words, in the present invention, the communication line of the elastic cable and the communication line of the composite cable are connected to each other as described above, and the power line of the composite cable and the slip type current collector are connected to each other. , when connecting a fixed device and a mobile device with a cable, the power line and communication line at the unwinding end of the composite cable, the power line of the slip type current collector and the communication line of the elastic cable, respectively, are By simply connecting it to a designated point, fixed and mobile devices can power and communicate with each other, and when the cable is rolled up and unwound, it can be used for both power supply and communication. Since it is a composite cable, it is advantageous in terms of assembly, structure, number of parts, etc. compared to a cable that uses two independent cables for power supply and communication and two reels of these cables. Since the communication lines in the composite cable and the elastic cable are directly connected without a slip ring, the increase in loss at the connection can be kept low, and the elasticity of the elastic cable allows for the specified self-winding speed. There is also the advantage of being able to secure power.

Furthermore, since the elastic cable that spirals in the winding space of the inner winder is fixed at its winding start end and winding end, the composite cable cannot be unwound from the outer winder. The force and the winding force of the elastic cable are prevented from acting as opposite tensile forces, and the spiral portion of the elastic cable and the extra length at the winding start end are attracted to each other in opposite directions. There will be no more. Therefore, when unwinding the composite cable, a strong winding force is no longer applied to the winding part in the external space for winding, and no load other than bending is applied to the elastic cable, and both cables are Fatigue and wear and tear are eliminated, and less force is required to unwind the composite cable.

In particular, in the present invention, since the inner winder is fixed and the outer winder rotates, winding of the cable,
When unwinding, it is only necessary to rotate the outer winder, and therefore, compared to, for example, connecting the inner winder and outer winder as one unit and rotating both at the same time, a large amount of power is required. This enables the specified rotation to be performed without any problem, reduces the burden on the rotation support part that tends to be strained, suppresses rotational runout, noise, etc., and reduces bends in each part of the cable. Since the wiring can be done reasonably and reasonably, the overall durability of the device can be increased.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional explanatory diagrams of the conventional example;
Figure 4 is a cutaway front view of essential parts and a right side view thereof showing one embodiment of the device of the present invention, Figure 5 is a sectional view showing one row of elastic cables in the same, and Figure 6 is Cross-sectional explanatory diagram of the inner winder in the same as above, Fig. 7A,
B is a cross-sectional view showing each example of the composite cable in the same as above, FIG. 8 is a cross-sectional explanatory view of the outer winder in the same as above, and FIGS. 9 and 10 are respective main parts showing other embodiments of the device of the present invention. FIG. 10...Inner winder, 11...Inner space for winding, 1
2... Outer winder, 13... External space for winding, 14...
...Rotating shaft for outer winding, 15... Rotating shaft for inner winding, 24...
...Fixing tool, 27...Elastic cable, 27a...
Winding start end of the elastic cable, 27b... Extra length on the winding start end side, 27c... Winding end of the elastic cable, 27d... Extra length on the winding end side, 2
8...Communication line, 35...Composite cable, 35a...
... winding start end of composite cable, 35b... extra length at winding start end, 37... communication line, 39... power line, 40... current collector.

Claims (1)

[Claims] 1. An inner winder that has an internal space for winding and is loosely fitted around the outer circumference of the rotating shaft, and an outer winder that has an external space for winding and is fixed to the rotating shaft, have a common axis as the central axis. At the same time, the inner winder is fixed so as not to rotate via a fixture, and an elastic cable having a communication line is coiled in the winding internal space of the inner winder. A composite cable including a communication line and a power line is unwound in the external winding space of the outer winder.
The winding start end of the elastic cable is fixed to the rotating shaft, and the extra length on the winding start end side is drawn into the rotating shaft, and the winding ending end of the elastic cable is fixed to the rotating shaft. is fixed to the circumferential surface of the inner winder, and the extra length at the winding end side is drawn out of the inner winder, and the communication line in the extra length at the winding start end of the composite cable is is drawn into the outer winder, and the communication line end in the extra length on the winding start side of the elastic cable and the communication line end on the extra length on the winding start side of the composite cable are mutually connected. What is claimed is: 1. A cable winding device, characterized in that the power line at the extra length on the winding start side of the composite cable is connected to a slip-type current collector mounted on a rotating shaft.