JPH10291735A - Cable length switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable length switching device of a mechanism, excellent in controllability and suitable for miniaturization and reduction of cost. SOLUTION: In a cable length switching device, three partitioning parts 8a, 8b, 8c are concentrically provided as holding means for holding switching cords 5a, 5b fixed on the way of a cable 1 wound into a hollow core, the rings for two switching cords 5a, 5b are independently positioned among the partitioning parts 8a, 8b, 8c, one shaft 10 is inserted, the switching cords 5a, 5b are held, and a lever part 11 for receiving drive from a related unit is provided on the shaft 10. Moreover, a step is formed on the round surface of one end of the shaft 10, and the linear motion of the shaft 10 is performed in two stages by the combination of the stepped part and a hole of a bearing part 16 and a coil spring 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspended object by switching a feeding length of an air-core wound cable for suspending a suspended object such as a marine sensor or a microphone from the floating part floating on the sea. The present invention relates to a cable length switching device for appropriately setting a suspension depth of a cable.

[0002]

2. Description of the Related Art In a conventional cable length switching device, a short switching cord is branched for each set length of extension to a cable having a length for suspending a suspended object to the deepest position according to the necessity of suspension. In this configuration, the free end side of the switching cord is hooked on the holding means when the air core is wound. The setting of the cable length is performed by removing the switching string from the holding means in accordance with the set length before the cable is extended. When this setting is appropriately performed, the cable is extended to the switching string hooked on the hook, and the extension of the cable is regulated by the switching string. Thereby, the suspension depth of the suspended object is set to an appropriate depth.

[0003]

By the way, in the conventional cable length switching device, various types of holding means include a mechanism for manually removing the cable and a mechanism for automatically removing the cable in accordance with an electrical setting. . For example, Shokai 6
Japanese Patent Application Laid-Open No. 2-1400067 and Japanese Patent Application Laid-Open No. Hei 8-91709 are known.

However, with a small number of parts, there is no holding means suitable for hooking the switching cord and removing it reliably, excellent in operability, and suitable for miniaturization and cost reduction. For this reason, there has been a problem to provide a cable length switching device having a holding means which is excellent in operability and suitable for miniaturization and cost reduction.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a method of winding a cable in which a short switching cord is connected in a branching manner for every set length of feeding and storing the cable in an accommodating portion. Pulling the free end side out of the storage section, locking the free end and having holding means capable of releasing the lock,
By holding the switching string by the holding means when the cable is extended, the cable can be extended to the position where the switching string is held, and the locking of the switching string is appropriately released. In the cable length switching device configured to change the cable feeding length, the holding means axially attaches the shaft to the plurality of partition bearings and the stopper bearings via an elastic member, and the rotation direction and the rotation direction are attached to the shaft. The mechanism for applying a biasing force in the direction of the bearing for the stopper shall be provided, and the bearing for the partition shall have a plurality of partitions forming the partition corresponding to the number of the switching cords arranged at appropriate intervals, and the bearing for the stopper shall be The elastic member is formed with a fan-shaped hole symmetrical with respect to the axis, and the elastic member is arranged in the rotation direction and the stopper bearing direction with respect to the shaft. The shaft is provided with an urging force, and the shaft has a sectional shape at one end which is a fan shape symmetrical with respect to the axis, and the fan shape is formed by displacing a step corresponding to the number of switching strings in a fixed rotation direction. The lever is projected from the side surface, and the switching string is locked at the other end, and the locking of the switching string held by the holding means is released by rotating the shaft by the lever. By rotating in the opposite direction, the shaft portion having a fan-shaped cross section is sequentially projected from the hole of the stopper bearing by the urging force of the elastic member, and the switching cord is sequentially removed from the shaft.

It is preferable that the free end of the switching string is formed by a loop-shaped loop, and the loop is hooked on a shaft. Preferably, the elastic member is a coil spring.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a main part of the cable length switching device, FIG. 2 is a sectional side view of a main part of the cable length switching device, and FIG. 3 is an exploded perspective view showing a component configuration and arrangement.
In the figure, reference numeral 1 denotes a cable. The cable 1 is wound around an air core and housed in a case 2, and the upper and lower surfaces thereof are held by holding plates 3 and 4 fixed to the case 2. The end of the cable 1 is pulled out from the center portion side in a state of being wound from a hole 3 a provided at the center of the holding plate 3. 5a, 5b
Is a switching string provided in the middle of the cable.

FIG. 4 is a perspective view showing a step of winding the cable 1 with an air core. Here, the cable 1 is first wound to a predetermined length whose length can be switched, and the switching paper 5a is fixed to the cable 1. After that, only a few turns are involved. The switching string 5a is woven in a tubular shape, and has a loop-shaped loop portion 6a formed at one end, and the cable 1 passes through the inside at the other end.

Here, at the stage of winding the cable 1 with the air core, the switching string 5a is passed through the cable 1 in a state where it is not fixed to the cable 1, and the switching string 5a is held until the cable 1 is wound to a predetermined length. It keeps shifting. Then, when the cable 1 is wound up to a predetermined length, that is, a position where the feeding is stopped, the switching cord 5a is fixed to the cable 1 at the other end of the cylindrical shape by bonding or caulking. Then, the loop 6a of the switching string 5a fixed to the cable 1 is put out of the hole 3b provided in the holding plate 3. Thereafter, the cable 1 is wound on the fixed switching string 5a. Next, when the cable 1 is wound to a predetermined length for stopping the feeding, the next switching string 5b is processed in the same manner as described above. Further, the cable 1 is wound.
In this embodiment, two switching cords 5a and 5b are used.

Referring back to FIGS. 1, 2 and 3, reference numeral 7 denotes a plate mounted in the case 2 so as to be located above the upper holding plate 3. This plate 7 has
Holes 7a, 7b, 7c are provided corresponding to the holes 3a, 3b, 3c of the holding plate 3. Further, the holes 7b,
Partitions 8a, 8b, 8c are provided immediately adjacent to 7c.
The partition portions 8a, 8b, 8c have shafts 1 to be described later.
A hole 9 into which 0 can be inserted is provided.

Reference numeral 7d denotes a square hole for avoiding interference with the lever portion 11 of the shaft 10 when the shaft 10 is operated. 23 is a drive shaft. Reference numeral 10 denotes a shaft, and the shaft 10 is provided with stopper portions 12 and 13. Fourteen wedge-shaped convex portions are provided at the tips of the stopper portions 12 and 13. 11 is a drive shaft 23
And 15 is a coil spring.

The coil spring 15 is used for the shaft 1
The lever 11 is sandwiched between one end 11a of the lever 11 and the partition plate 8a so that a force is always applied in the direction of arrow A. And bending parts 15a and 15b are provided at both ends,
The bent portion 15a enters the back side of the lever portion of the shaft 10, and the bent portion 15b further
On the surface. When the lever portion 11 of the shaft 10 receives the operation of the driving shaft 23 and is pushed down in the direction of the arrow B, a force is generated in a direction opposite to the direction of the arrow B which repels. However, the repulsive force is weaker than the pushing force of the driving shaft 23. Reference numeral 16 denotes a bearing. A round hole 18 for receiving the shaft center of the shaft 10 and fan-shaped holes 19 and 2 connected to the round hole 18 are provided at the center of the 16 bearing.
0 is provided so that the stopper portions 12, 13 can be released when the shaft 10 operates and rotates. 21 is a stopper portion 12, 1 of the shaft 10.
3 are wedge-shaped concave holes that can be fitted to the wedge-shaped protrusions 14. Reference numeral 22 denotes a screw for fixing the bearing 16.

The procedure for assembling the cable length switching device having the above configuration will be described below with reference to FIG. As shown in FIGS. 5 and 6, the end 12 of the stopper 12
a, two ends of the fan-shaped holes 19 and 20 of the bearing 16
a, 20a at the same position,
Insert the shaft 10 into the. At this time, the shaft 10 is inserted until the end 11 b of the lever portion 11 contacts the bearing 16.

Next, as shown in FIG. 7, a coil spring 15 is inserted into the shaft 10. At this time, the bent portion 15a of the coil spring 15 is positioned on the back side of the lever portion 11 of the shaft 10. Further, as shown in FIGS. 8 and 9, the coil spring 15 is twisted in the direction of arrow C, and the bent portion 15 b is positioned so as to contact the surface of the plate 7.

Next, the shaft 10 is divided into the partitions 8a, 8b,
8c, the shaft 1 in the direction of arrow D
0 is pushed in to fix the bearing 16 to the plate 7 with the screw 22. Thus, the assembly is completed. The setting procedure of the cable length switching device will be described below with reference to FIG. FIG.
As shown in the figure, the loop 6b of the switching string 5b is passed through the hole 7b of the plate 7 and is positioned between the partition 8a and the partition 8b of the plate 7, and the shaft 10 is moved in the direction of the arrow D 'to Into the loop 6b of the switching string 5b. Further, when the stopper portion 13 of the shaft 10 passes through the wall of the bearing 16, the shaft 10 is rotated in the direction indicated by the arrow E until it stops.

Further, similarly to the above, as shown in FIG. 11, the loop 6a of the switching cord 5a is also passed through the hole 7c of the plate 7, and is positioned between the partition portions 8b and 8c of the plate 7.
By moving the shaft 10 in the direction of the arrow D ",
0 is inserted into the ring 6a of the switching string 5a, and when the stopper portion 12 of the shaft 10 has passed through the wall of the bearing 16, the shaft 10 is disengaged from the wedge-shaped convex portion 14 of the stopper portion 12. It is rotated in the direction of the arrow E 'until it fits into the slot 21. This completes the setting.

Next, the operation of the cable length switching device of this embodiment will be described. FIG. 12 shows the state of the above-mentioned initial set, in which the switching articles 5a and 5b are also fixed at predetermined positions of the cable 1 wound with the air core. The shaft 10 is inserted into the loop portion 6a of the switching string 5a between the partition portions 8c and 8b. Also, the loop portion 6b of the switching string 5b
Similarly, the shaft 10 is inserted between the partitions 8b and 8a. As a result, the loop portions 6 of the switching strings 5a, 5b
a and 6b do not come off the shaft 10. In addition,
If the rotation operation of the shaft 10 is controlled in two stages, the cable length can be switched in two stages.

When the cable 1 is extended from the above-described initial set state, the cable 1 is sequentially extended in the length where the first switching cord 5a is fixed. When the cable 1 is fed out to the length to which the first switching string 5a is fixed, the loop 6a of the switching string 5a is held by the shaft portion 10.
Can not be extended. In order to further extend the cable 1 from this state, as shown in FIGS. 12 and 13, the ends 12 b 2 of the stopper portion 12 of the shaft 10 are connected to the ends 19 b and 20 of the fan-shaped holes 19 and 20 of the bearing 16.
b need to be rotated, and here, a driving shaft 2 driven by a mechanism (not shown) is used.
At 3, the lever 11 of the shaft 10 is pushed in the direction of the arrow F. Thereby, the shaft 10 rotates in the direction of the arrow G,
The end 12b of the stopper 12 is the fan-shaped hole 1 of the bearing 16.
9 and 20, the shaft 10 is disengaged from the ends 19b and 20b.
Moves in the direction of the arrow H by the force of the coil spring 15. At this time, due to the operating force of the driving shaft 23,
With a weak force, the bent portion 15a of the coil spring 15 acts in the direction opposite to the direction of the arrow G, and presses the lever portion 11 of the shaft 10, so that the amount of operation of the drive shaft 23 due to the weight of the lever portion 11 exceeds The rotation operation does not occur on the shaft 10.

Then, the wedge-shaped convex portion 14 of the stopper portion 13 is fitted into the wedge-shaped concave hole 21 of the bearing 16,
As shown in FIG. 13, the shaft 10 between the partitions 8c and 8b is released, and the ring 6a of the switching string 5a comes off. As a result, the cable 1 after the switching string 5a can be extended. Further, in order to draw out the cable 1 from this state, as shown in FIGS.
As shown in FIG. 3, the drive shaft 23 rotates the shaft 10 so that the two ends 13 b of the stopper 13 pass through the ends 19 b and 20 b of the fan-shaped holes 19 and 20 of the bearing 16. When applied in the direction of the arrow, the shaft 10 rotates in the direction of the arrow G 'and moves in the direction of the arrow H'. Then, the wedge-shaped convex portion 14 of the stopper portion 13 is fitted into the wedge-shaped concave hole 21 of the bearing 16, and the partition portion 8 is formed.
As shown in FIG. 14, the shaft 10 between the b and 8a is in the released state, the ring 6b of the switching string 5b comes off, and all the cables 1 after the switching string 5b can be extended.

Next, a case where a cable length switching device for an ocean sensor is provided will be described. FIG. 15 is a side sectional view of the ocean sensor on which the cable length switching device is mounted, and FIG. 16 is an explanatory diagram showing an operation state of the ocean sensor. In FIG.
Reference numeral 25 denotes a levitation, which floats on the sea surface and emits radio waves. Numeral 24 denotes a driving device, which is housed in the floating part 25 and linearly moves the driving shaft 23 described with reference to FIGS.

An ocean sensor 26 converts an underwater radio wave detected by the ocean sensor into an electric signal, is transmitted through the cable 1 to the levitation 25, and is emitted from the levitation 25 as a radio wave. Reference numeral 27 denotes a cylindrical case, in which the floating part 25, the cable 1 wound around the air core, the cable 10, the shaft 10 and the like, and the ocean sensor 26 are housed.

The operation of the above-described ocean sensor will be described below. As described with reference to FIG. 15, when the ocean sensor 26 is housed in the cylindrical case 27 and put into seawater, an electric current (not shown) is activated, and the drive unit 24 is activated to drive the drive shaft 23. Move. Thus, the rotation of the shaft 10 and the linear movement are performed, the switching cord 5a is released, and the cable length is switched so that the cable 1 is extended by a predetermined length.

Next, as shown in FIG.
7 is automatically released and the cable 1 is extended,
The floating portion 25 floats on the sea surface, and when the cable 1 is fed out to a predetermined length, the extension of the ocean sensor 26 is completed, and the operation of the ocean sensor 26 is started. here,
In the cable length switching device of the present embodiment, in order to operate the shaft 10, it is sufficient to provide the drive shaft 23 that performs two-stage linear operation, and the shaft 10 can be operated with a small operation amount. As a result, the driving device can be reduced in size. As a result, the floating portion 25 can also be made smaller, so that the cost can be reduced. Also,
The operation of the shaft 10 is restricted by the spring force of the coil spring 15, the engagement of the wedge-shaped convex portions 14 at the tips of the stopper portions 12 and 13 of the shaft 10, and the wedge-shaped groove 21 of the bearing 16. Therefore, reliable operation can be performed without causing malfunction due to external force such as vibration or impact.

According to the above embodiment, as the holding means for releasably holding the fixed switching cord in the middle of the cable wound with the air core, three partition parts are provided coaxially, and this partition part is provided. Between the two switching strings are separately positioned, penetrate one shaft, hold the switching strings, and provide a shaft with a lever portion that receives drive from the related unit, The stepping is formed on one end and the circular surface of the shaft, and the combination with the hole of the bearing part and the coil spring make the linear movement of the shaft 2
Since it can be performed in stages, the cable length can be switched with a small number of parts. For this reason, cost can be reduced. In addition, there is an advantage that the structure is simple and the operation is simple, and the reliability of the operation can be greatly improved.

[0025]

As described above, according to the cable length switching device of the present invention, it is possible to provide a cable length switching device having excellent operability and having holding means suitable for miniaturization and cost reduction. The effect that the reliability of operation can be greatly improved is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a cable length switching device.

FIG. 2 is a sectional side view of a main part of the cable length switching device.

FIG. 3 is an exploded perspective view showing a component configuration and arrangement.

FIG. 4 is a perspective view showing a step of winding a cable with an air core;

FIG. 5 is an explanatory view of an assembling procedure.

FIG. 6 is an explanatory view of an assembling procedure.

FIG. 7 is an explanatory view of an assembling procedure.

FIG. 8 is an explanatory view of an assembling procedure.

FIG. 9 is an explanatory view of an assembling procedure.

FIG. 10 is an explanatory diagram of a setting procedure.

FIG. 11 is an explanatory diagram of a setting procedure.

FIG. 12 is an explanatory diagram of an operation.

FIG. 13 is an explanatory diagram of the operation.

FIG. 14 is an explanatory diagram of an operation.

FIG. 15 is a side sectional view of the ocean sensor.

FIG. 16 is an explanatory diagram showing an operation state of the ocean sensor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable 10 Shaft 11 Lever part 15 Coil spring 16 Bearing 5a, 5b Switching string

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yasunori Nakata 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd.

Claims (3)

[Claims] 1. A free end side of the switching cord is pulled out of the storage part when a cable in which a short switching cord is connected in a branching manner for each set-out length is wound around an air core and stored in the storage part. Holding means for locking the free end of the cable and releasing the lock, and holding the switching string by the holding means when the cable is fed out, so that the switching string is held by the cable. In the cable length switching device, in which the cable can be extended to a predetermined position, and the extension of the cable is changed by appropriately releasing the locking of the switching cord. And a mechanism for applying a biasing force to the shaft in the rotational direction and the stopper bearing direction, and the partitioning bearing includes a switching cord. And those disposed more of the the appropriate intervals to form a partition in accordance with the number,
The stopper bearing has a fan-shaped hole formed symmetrically with respect to an axis, and the elastic member applies an urging force to the shaft in the rotation direction and the stopper bearing direction, The shaft has a fan-shaped cross-section at one end, which is symmetrical with respect to the axis. Let
It is assumed that the switching string is locked to the other end, and the release of the locking of the switching string held by the holding means is performed by rotating the shaft in the opposite direction to the rotation direction by the lever portion, A cable length switching device, wherein a shaft portion having a fan-shaped cross section is sequentially projected from a hole of the stopper bearing by a biasing force of the elastic member, and a switching string is sequentially removed from the shaft. 2. The cable length switching device according to claim 1, wherein a free end of the switching cord is formed by a loop-shaped loop portion, and the loop portion is hooked on a shaft. 3. The cable length switching device according to claim 1, wherein the elastic member is a coil spring.