JP2002003085A - Cable winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable winding device hardly requiring a nonextracted cable present in a conventional contactless cable winding, device, capable of extracting an extraction cable from any of terminations at both its ends to improve convenience, allowing the maximum extraction length of the extraction cable to be arbitrarily set and having a large degree of freedom of design. SOLUTION: For instance, five multi-stage winding pulleys 12-16 are arranged in the form of an equilateral pentagon at an equal interval on a concentric circle in a winding case 11. The respective pulleys form a cable winding drum for winding a cable 20 by circumscribing it. The cable 20 is formed into a form of multiple headbands, can be extracted from and of cable extracting terminations 20A and 20B, and can be rewound. Since the diameter of the circumscribed circle by the multi-stage winding pulleys 12-16 is increased and decreased according to the extracting action and the rewinding action of the cable 20, the burden due to tensile force working on the cable 20 or suspension springs 17 is relaxed particularly in extracting the cable, so that the springs work well and are effective for carrying out a smooth extracting operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable winding device used for various electric and electronic devices such as a power cord of a vacuum cleaner and a communication cord for a personal computer.

[0002]

2. Description of the Related Art Conventionally, a cable drawn into a winding case is actually pulled out of the case, and a pull-out cable of a practical part is connected to the pull-out cable in a contactless manner and the pull-out cable is pulled out excessively. 2. Description of the Related Art A non-contact type cable winding device including a non-pull-out cable stored as a surplus portion for preventing a cutting accident or the like due to a cable is well known. Non-contact type cable winding devices have been proposed as, for example, Japanese Unexamined Utility Model Publication No. 7-35459 and Japanese Unexamined Patent Application Publication No. 7-89674. Typically, the device described in the former publication is shown in FIG.
Indicated by

In this case, a reel shaft 2 of a take-up support shaft is rotatably provided in a take-up case 1 of the apparatus main body, and is provided integrally and parallel on the shaft of the reel shaft 2 at appropriate intervals. The inside of the winding case 1 is partitioned into a plurality of chambers in the case thickness direction by the two disc-shaped first and second partition reel flanges 3 and 4 thus obtained.

The lower space between the first and second partition reel flanges 3 and 4 is a drawer reel chamber, in which a drawer cable 7 is wound around a winding cylinder 5. The upper space above the second partition reel flange 4 is a non-drawing reel chamber, in which a non-drawing cable 8 is wound around the take-up cylinder 6. A take-up spring 9 such as a spiral spring is mounted on the axial extension of the reel shaft 2, and the reel portion composed of the first and second partition reel flanges 3 and 4 integrated with the reel shaft 2 is rotated in the rewinding direction. It is energizing.

In this embodiment, the second partition reel flange 4
A cable through-hole is provided at a position close to the reel shaft 2 through which the lower extraction cable 7 and the upper non-extraction cable 8 are connected in a non-contact manner through the cable insertion hole. .

[0006] From the above configuration, the practical drawer cable 7
Is pulled out of the winding case 1 by a necessary length against the winding spring 9. The non-extracting cable 8 is tightened from the previously loosened state by the traction force generated by pulling out the extracting cable 7.

[0007]

The conventional contactless cable winding device shown in FIG. 3 has the following problems.

One is that it is necessary to accommodate the length of the non-extracting cable 8 in a manner equal to or greater than the length of the extracting cable 7, and the winding case 1 is unnecessarily enlarged due to the accommodation space. It is to make. Also, in this case,
The longer the length of the non-extracting cable 8 becomes, especially when used as a communication cable winding device, there is a problem in that the attenuation increases.

Another problem is that the cable 7
Is only drawn from one of its terminals. Therefore, for example, when used as a cable winding device of a portable communication device, there is an inconvenience such as bundling a fixed communication cable having a jack attached to a terminal when carrying the device.

Therefore, an object of the present invention is to improve the convenience because it is almost unnecessary to consider the non-leading cable found in the conventional contactless cable winding device, and the leading cable can be pulled out from either end of the cable. Another object of the present invention is to provide a cable winding device in which the maximum length of the cable can be arbitrarily set and the degree of freedom in design is large.

[0011]

In order to achieve the above object, the cable winding device according to the first aspect of the present invention comprises a winding case 11 and an equal interval on a concentric circle inside the winding case 11. And a plurality of multi-stage winding pulleys (12 to 12) that are rotatable on respective spindles and form a circumcircle of the cable 20 that is wound in a plurality of head-winding shapes and wound.
16) and a suspension spring 17 connected to each of the multi-stage take-up pulleys and biasing the same to expand uniformly in the centrifugal direction;
And the outer diameter of the multi-stage winding pulley is increased or decreased in a direction in which the outer diameter of the multi-stage winding pulley is pulled out from one of the two head-shaped ends of the cable 20 against the suspension spring 17 and unwound by the suspension spring. It is characterized in that it is configured to change.

With the above arrangement, the plurality of multi-stage take-up pulleys 12 to 16 arranged at equal intervals on a concentric circle form a single cable take-up cylinder around which the cable 20 is wound. . Since the circumscribed cable 20 is formed into a head-winding shape with a plurality of windings, it can be pulled out from any one of the cable drawing terminal 20A on one side and the cable drawing terminal 20B on the other side, and can be rewound. When used as a communication cable winding device, the cable is pulled out from either of the cable pull-out terminals 20A and 20B in such a manner, so that there is no need to bundle fixed cables.

Further, the diameter of the circumscribed circle which forms one winding cylinder by the plurality of multi-stage winding pulleys 12 to 16 expands and contracts in accordance with the pulling-out operation and the rewinding operation of the cable 20. The load caused by the tensile force acting on the cable 20 and the suspension spring 17 is reduced, and the spring is effective and effective in performing a smooth pull-out operation.

According to a second aspect of the present invention, in the cable winding device, the suspension spring 17 is provided with the multi-stage winding pulleys 12 to 1.
6 is pulled from the outside to urge in the centrifugal direction to increase the circumscribed diameter, or the multi-stage take-up pulleys 12 to 16
Are pressed from the inside and urged in the centrifugal direction to expand the diameter.

With the above construction, the suspension spring 17 has a structure in which a plurality of multi-stage take-up pulleys are arranged at equal intervals on a concentric circle. It can be mounted so that it can be biased. On the other hand, since the suspension spring 17 can be mounted inside the concentric circle of the pulleys and each multi-stage take-up pulley can be pushed from the inside to expand the diameter in the centrifugal direction, there is a degree of freedom in the device configuration.

In the cable winding device according to a third aspect, the number of the multi-stage winding pulleys is preferably 3 to 8, and the number of the cable winding stages in the multi-stage winding pulley is preferably 3 to 8. It is characterized by seven stages.

With the above configuration, when the number of multi-stage take-up pulleys is, for example, five, they are arranged at regular intervals in a regular pentagon. Therefore, when the number of installations is three, the circumscribed shape of the cable 20 is an equilateral triangle, which is not impossible, but is preferably about eight. If the number of multi-stage take-up pulleys is increased more than that, since the movement of each pulley in the centrifugal and centrifugal directions is reduced, the pull-out amount (length) of the cable 20 is reduced, and the effectiveness may be impaired. .

In this case, by appropriately setting the number of stages in each multi-stage take-up pulley to about 3 to 7 stages, the storage length of the cable 20, that is, the draw-out length can be freely set. When the winding case 11 is used, only the cable withdrawal amount can be set differently, which is advantageous in versatility.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the cable winding device according to the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 are a plan view and a side view of a partial cross section of the apparatus 10 of this embodiment. The winding case 11 of the apparatus main body is formed into a cylindrical container shape, and a plurality of multistage winding pulleys 12 to 16 in this example are arranged in a regular pentagon at equal intervals on a concentric circle around an axis around the center of the circle. Each of these multi-stage take-up pulleys 12 to 16 has three stages in the illustrated example, and is rotatably supported by pulley bearing stays 12a to 16a, respectively.

In the conventional description, the cable is referred to as a pull-out cable. However, the cable 20 in this case which does not distinguish between the pull-out and the non-draw-out is composed of five regular pentagons which form a body such as a winding drum or a winding drum. It is wound in three stages so as to circumscribe the multi-stage winding pulleys 12 to 16.

As is apparent from the drawing, the five multi-stage take-up pulleys 12 to 16 are supported in the take-up case 11 as if they were suspended. That is, each pulley bearing stay 12a to 16a serving as a pulley support shaft
Is pulled in the centrifugal direction by a suspension spring 17 by a tension spring, and the five multi-stage take-up pulleys 12 to 16 are radially pulled from each other and stretched in space.

Next, the operation and operation of the cable winding device according to the present embodiment having the above configuration will be described.

In use, the pull-out terminal 20A on one side or the pull-out terminal 2 on the other side of the cable 20 wound around the five pentagonal multi-stage take-up pulleys 12 to 16 and wound therearound.
Winding case 1 from any of 0B for convenience of use
Pull from one.

By the pulling power of the cable, a centripetal force is applied to each of the five multi-stage take-up pulleys 12 to 16 toward the center, so that each pulley stretches the respective suspension spring 17 so that the pentagon is gradually reduced. Working and moving. In that way the cable 20 is pulled out by the required length.

On the other hand, when the pulled-out cable 20 is released from the pulled-out position when the drawn-out cable 20 is rewound back into the winding case 11 and the use is terminated, the suspension spring 17 increases the spring length by its resilient force. It works in the direction of reduction. That is, the pulley bearing stays 12a to 16a expand and move in the centrifugal direction due to the spring force due to the reduction of the suspension spring 17, and the multistage take-up pulleys 12 to 16 rotate accordingly, and the cable 20 is gradually unwound.

Incidentally, as an embodiment of the present embodiment, the pulley winding diameter of each of the multi-stage winding pulleys 12 to 16 is set to 10 mm.
The circumscribed circle diameter of the five was set to be 180 mm. In the illustrated example, the number of pulley stages of each of the multi-stage take-up pulleys 12 to 16 is three. However, when the number of stages is about seven, the length of the cable 20 can be drawn out by 3000 mm. At this time, the length of the so-called non-drawn portion of the cable 20 from which the cable 20 was not drawn was 700 mm.

A comparative comparison of the case where the cable withdrawal length is 3000 mm shows that the cable is 300 mm in the conventional structure.
The cable length of the non-pull-out portion required 1700 mm to pull out by 0 mm. As is clear from this, in order to pull out the cables of the same length, in the embodiment of the present invention, the cable of the non-drawing portion is less than about 40% of the conventional example (700 mm: 17 mm).
00 mm). As a result, the amount of use of the cable 20 can be significantly reduced, which is economical, and the size of the winding case 11 can be relatively reduced.

The fact that the length of the cable at the non-leading portion is short is very advantageous in terms of characteristics such as reduction of attenuation when used in a communication cable winding device.

Further, as shown in FIGS. 1 and 2, the present embodiment has a structure in which five multi-stage take-up pulleys 12 to 16 are arranged in a regular pentagon, but is not limited to such a pentagonal arrangement. In extreme cases, the number of pulleys can be three.

However, as a result of the study of the present inventors, even if the number of pulleys is excessive, the amount of movement of each pulley is reduced and the cable pull-out length is reduced.
８8.

Also, with respect to each of the multi-stage take-up pulleys 12 to 16, by setting the number of stages arbitrarily and suitably, the drawing length of the cable 20 can be freely changed at the design stage. It is also advantageous in terms of versatility.

Further, in this embodiment, the urging structure is shown in which each of the multi-stage take-up pulleys 12 to 16 is pulled and expanded in the radial direction of the centrifugal direction by using a tension spring as the suspension spring 17. Also in this case, a structure in which the spring is mounted so that the biasing direction of the suspension spring 17 is not extended from the outside but pulled radially outward from the center portion of the five multi-stage take-up pulleys 12 to 16 is also possible. It is.

In FIGS. 1 and 2 showing the above-described embodiment, the stopper mechanism for pulling out the cable 20 to an arbitrary length during use and locking the cable 20 at the drawn-out position is not particularly shown. For example, a ratchet structure or a clutch mechanism can be used as such a stopper mechanism, and such a stopper mechanism can be adopted in a device that can pull out the cable 20 from any of the pull-out terminals 20A and 20B as in this example. It is. Since the main object of the present invention is to minimize or eliminate the conventional non-drawing cable, description of such a stopper mechanism is omitted.

[0035]

As described above, in the cable winding device according to the first aspect of the present invention, a plurality of multi-stage winding pulleys arranged at equal intervals on a concentric circle are circumscribed by them and the cable is Forming one cable winding cylinder to be wound;
Since the circumscribed cable is in the shape of a headband with a plurality of turns, the cable can be drawn out and rewinded from either the cable drawing terminal on one side or the cable drawing terminal on the other side. When used as a communication cable winding device, the cable is pulled out from any of the cable pull-out terminals, so that the trouble of bundling the fixed cables is eliminated and the convenience is improved.

Further, since a plurality of multi-stage take-up pulleys form one take-up cylinder and the diameter of a circumscribed circle thereof is enlarged or reduced in accordance with the cable pulling-out operation and the cable rewinding operation, the cable and the cable at the time of pulling out the cable are particularly required. The load due to the tensile force acting on the suspension spring is reduced, and the spring is effective and effective in performing a smooth pull-out operation.

In the cable winding device according to the second aspect, the suspension spring has a structure in which a plurality of multi-stage winding pulleys are arranged at equal intervals on a concentric circle, and each of the pulleys is connected to an outer side. It can be installed so that it can be pulled in the centrifugal direction and urged in the radial direction, or a suspension spring can be mounted inside the concentric circle of the pulleys, and each multi-stage take-up pulley is pushed from the inside to expand in the centrifugal direction. Therefore, there is a degree of freedom in the device configuration.

Further, in the cable winding device according to the third aspect, when the number of the multi-stage winding pulleys is, for example, five, the number of the multi-stage winding pulleys is arranged at regular intervals in a regular pentagonal shape. The circumscribed shape of the cable is not impossible because it is an equilateral triangle, but is preferably about eight. If the number of multi-stage take-up pulleys is increased more than that, since the movement of each pulley in the centrifugal and centrifugal directions is reduced, the cable pull-out amount (length) is reduced, and the effectiveness may be impaired. In this case, the number of stages in each multi-stage winding pulley is 3 to 7
By suitably setting about the step, the storage length of the cable, that is, the drawer length can also be set freely,
When a predetermined winding case is used, only the cable withdrawal amount can be set differently, which is advantageous in versatility.

[Brief description of the drawings]

FIG. 1 is a plan view showing a cable winding device according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the present apparatus.

FIG. 3 is a side sectional view of a contactless cord winding device shown as a conventional cable winding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cable winding device 11 Winding case 12-16 Multi-stage winding pulley 12a-16a Pulley bearing stay 17 Suspension spring 20 Cable 20A Cable lead-out terminal 20B Cable lead-out terminal

Claims (3)

[Claims] 1. A circumcircle of a winding case and a cable which is arranged at equal intervals on concentric circles inside the winding case and is rotatable on each support shaft, and is wound in a plurality of head-winding shapes and wound. And a suspension spring connected to each of the multi-stage take-up pulleys and biasing the same to expand evenly in the centrifugal direction, comprising: A cable winding device wherein the outer diameter of the multi-stage winding pulley is changed in the direction of contraction or expansion by a force at the time of pulling out the suspension spring from one of them and rewinding the suspension spring. apparatus. 2. The suspension spring pulls each of the multi-stage winding pulleys from the outside and urges them in a centrifugal direction to increase the circumscribed diameter, or pushes each of the multi-stage winding pulleys from the inside to expand the diameter. The cable winding device according to claim 1, wherein the cable winding device is biased in a centrifugal direction. 3. The number of the multi-stage winding pulleys is preferably 3 to 8, and the number of cable winding stages in the multi-stage winding pulley is preferably 3 to 7 stages. Or the cable winding device according to 2.