JPH01242868A - Elastic energy accumulator - Google Patents

Abstract

PURPOSE:To achieve stable and efficient energy input/output characteristics by forming a large diameter drum, a middle drum and a small diameter drum as taper drums and constructing the title device in a way that only the middle drum revolves on its axis with revolving round the large diameter drum or the small diameter drum. CONSTITUTION:When energy is input, a multiple layer of elastic bodies wound on a small diameter stock drum 16 is wound off and they are wound up on the outer circumference of a small diameter drum 17, a middle drum 32 and a large diameter drum 14 in order to be shifted and to be extended in order for being wound up on the large diameter stock drum 15 in multiple layers, when the energy is output, the elastic bodies 35 are shifted in a contrary direction for discharging the accumulated energy. When the number of wound layers changes on the large diameter or the small diameter stock drums 15, 16 the wound position of the elastic body 35 on the taper drum is changed by a means for changing winding position according to the change thereof, a wound-up- diameter is changed, the tension of the elastic body between the large diameter stock drum 15 and the drum 14, and between the small diameter stock drum 16 and the drum 17 is maintained constant.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention utilizes the elastic deformation of a string-like elastic body to store energy, distort a part of the elastic body by a large fixed amount, and deform the strain area. Regarding elastic energy storage devices that will be gradually expanded,
In particular, the present invention relates to an elastic energy storage device whose input/output characteristics are stabilized to a desired value during energy output when the total amount of energy is increased by winding an elastic body in multiple layers.

[Conventional technology]

An energy storage device that stores energy using elastic deformation of an elastic body is disclosed in Japanese Patent Laid-Open No. 49-96144. The device disclosed in this publication consists of a device having two drums and a string-like elastic body stretched between the two drums.
The two drums rotate in the same direction.

In the energy storage device disclosed in Japanese Patent Application Laid-Open No. 49-96144, if the initial strain of the elastic body wound around the small diameter drum is 0, the energy at the time of output is 0, and the efficiency is 0.
%. Therefore, when an elastic body with low elastic elongation is used, sufficient initial strain cannot be imparted, so there is a problem in that the energy at the time of output becomes almost zero.

In order to solve this problem, the applicant previously proposed a method in which a part of the elastic body is distorted by a large fixed amount and the area is gradually enlarged. Energy storage that can efficiently output energy even when the initial strain when winding is 0
has been proposed (Japanese Patent Application No. 61-168033).

For example, as shown in FIG. 8, the energy storage device of Japanese Patent Application No. 168033/1980 has a structure in which a small diameter drum 1 with a small amount of outer circumferential rotation and a large diameter drum 2 with a large amount of outer circumferential rotation.
An intermediate drum 3 (there may be more than one) with an intermediate amount of outer circumference rotation is provided, and a string-like elastic body 4 is installed between these drums 1, 2, 3.
It is a combination of

Each drum 1.2.3 is connected by a mechanical connection means 5, such as a gear, so that the amount of outer circumferential rotation increases in order from the small diameter drum side to the large diameter drum side, and the string-like elastic body 4 is connected to the small diameter drum 1. The elastic body 4 is stretched and its strain energy is stored by being wound from the side to the large-diameter drum 2 side, and the stored strain energy is released by being transferred in the opposite direction.

In such an energy storage device, FIG.
Figure 0 shows a comparison between the conventional two-drum system (Figure 10) and the three-drum system (Figure 9) when drums with radii R1, R2, and R3 are connected using gears with the same number of teeth. As shown, by providing the intermediate drum, it was possible to increase the energy output efficiency, and it became possible to obtain output even when the initial strain of the elastic body was O.

[Problem to be solved by the invention]

In the above energy storage device, in order to increase the total amount of energy output, it is necessary to increase the length of the elastic body and wrap the elastic body in multiple layers on the drum (large diameter drum and small diameter drum). It is effective to do so.

However, when the elastic body is wound in multiple layers on a drum,
Since the winding diameter changes, there is a risk that on a large diameter drum, as the number of wound layers increases, the elastic body may be pulled in too much, and on a small diameter drum, as the number of wound layers decreases, the elastic body may be insufficiently fed. That is, the tension (strain) of the elastic body changes due to changes in the winding layer, and the output torque characteristics change. especially,
When the number of winding layers increases on the large-diameter drum side, the elastic body may be stretched too much between adjacent intermediate drums, and there is a risk that the torque between the drums may not be balanced if only one drum is used.

One possible way to prevent this is to suppress the level of strain in the elastic body to a low level in the first place so that the strain does not become so large even in the outermost layer of the multilayer winding. However, if this is done, the amount of strain in the elastic body on the inner layer side of the winding layer will be suppressed to a considerably small amount, so the amount of elastic energy that can be output will be small, and although it is possible to prevent the elastic body from being over-tensioned, the output characteristics of the device will be kept low. It ends up.

The present invention focuses on the above-mentioned problems, and in an elastic energy storage device in which an elastic body is wound in multiple layers, the present invention prevents excessive tension of the elastic body while increasing the amount of strain in the elastic body, thereby achieving stable and efficient performance. The purpose is to obtain good energy input/output characteristics.

Moreover, compared to the elastic energy storage device shown in FIG. An object of the present invention is to provide an elastic energy storage device of a completely new type, which is capable of easily wrapping a large amount of elastic material in multiple layers, thereby improving the total amount of energy that can be output.

[Means to solve the problem]

The elastic energy M product device of the present invention that meets this purpose is configured as follows. In other words, a large diameter drum that does not rotate and has a tapered drum surface tapered in the direction along the drum axis, and a large diameter stock drum that is disposed coaxially with the large diameter drum; A small-diameter drum consisting of a tapered drum tapered in the direction along the axis, a small-diameter stock drum arranged coaxially with the small-diameter drum, and the axis of the drum for either the large-diameter drum or the small-diameter drum. From a tapered drum having an axis parallel to the drum, the drum surface is tapered in the direction along the drum axis, and the drum surface is tapered in the direction along the drum axis. at least one intermediate drum having an intermediate diameter with respect to the large diameter drum and the small diameter drum; , is stretched over the large-diameter stock drum via the outer peripheral surface of the large-diameter drum, the other end is fixed on the large-diameter stock drum, and is transferred between the tops of both stock drums to store its own strain energy. A string-like elastic body that can release stored strain energy and that can be wound in multiple layers on a large-diameter stock drum and a small-diameter stock drum, and a large-diameter stock drum and a small-diameter stock drum. A winding position changing means for changing the winding position of the elastic body on the outer circumferential surface of the large-diameter drum, intermediate drum, and small-diameter drum in a direction along the drum axis in accordance with a change in the number of winding layers of the elastic body on the disk drum. It is composed of the following.

[Effect]

In such an elastic energy storage device, compared to the method in which the small diameter drum, intermediate drum, and large diameter drum are mechanically interlocked and rotated, the large diameter drum, large diameter stock drum, small diameter drum, and small diameter stock drum are not rotated,
Only the intermediate drum is rotated while being revolved relative to the large diameter drum or the small diameter drum. When using energy manually, the elastic body wound in multiple layers on a small-diameter stock drum is unwound, and is sequentially wrapped around the outer circumferential surfaces of the small-diameter drum, intermediate drum, and large-diameter drum, and transferred in order to be stretched and stretched. The elastic body is then wound in multiple layers onto a large-diameter stock drum.

When outputting energy, the elastic body is moved in the opposite direction and the stored energy is released. When the number of winding layers changes on a large-diameter stock drum or a small-diameter stock drum, the winding diameter of the elastic body on the stock drum will be different from the winding diameter on the large-diameter drum or small-diameter drum, and the tension of the elastic body will change. Too much heat is about to occur. However, the large-diameter drum, intermediate drum, and small-diameter drum are configured as a taper drum, and the winding position changing means changes the winding position of the elastic body on the retainer drum in accordance with the change in the number of winding layers, and the winding on the taper drum changes. The diameter is changed to maintain constant elastic body tension between the large diameter stock drum and the large diameter drum and between the small diameter stock drum and the small diameter drum. Therefore, stable energy input/output characteristics can be obtained while increasing the total amount of output energy by multilayer winding.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an elastic energy storage device according to an embodiment of the present invention. In FIG. 0, 11 is a housing of the device, 12 is a side plate fixed to the housing 11;
Reference numeral 13 indicates a non-rotating shaft fixed to the side plate 12. The fixed shaft 13 is configured as a hollow shaft, and a large diameter drum 14, a large diameter stock drum 15, a small diameter stock drum 16, and a small diameter drum 17 are fixed to the shaft 13 in order from the left side in FIG. 1 so as not to rotate. There is.

The large diameter drum 14 and the small diameter drum 17 are formed as tapered drums whose drum surfaces are tapered in a direction along the drum axis, and the directions of the tapers are opposite to each other.

On the fixed shaft 13? -418, 19, 2o, 21.2
2.23 is rotatably supported, and the arm 18.2
3 is formed into a disk shape, and its outer periphery is a bearing 24.2.
It is supported by the housing 11 via 5. Arm 2
0.21 is also formed into a disk shape, and gear teeth are formed on its outer periphery. The arm 19.22 is rod-shaped. Arms 18 and 19 are connected via rotatable guide shafts 26, 27, and arms 19 and 20 are connected via rotatable guide shafts 28. 19.2 degrees are designed to rotate at the same angle. Arms 22 and 23 are connected via a rotatable guide shaft 29.3o, and arms 21 and 22 are connected via a rotatable guide shaft 31. 2
2.23 is designed to rotate in the same way.

The intermediate drum 32 is arranged so that its axis is parallel to the axis of the large diameter drum 14, and is rotatably supported by the arms 18, 19. The intermediate drum 32 is the large diameter drum 1
It is mechanically connected to the large diameter drum 14 via a gear 33 fixed to the 4 side and a gear 34 fixed to the intermediate drum 32 side, and revolves around the large diameter drum 14 as the arms 18 and 19 rotate. At this time, gears 33 and 34 are used to simultaneously rotate. Although not shown, this intermediate drum can also be placed on the small diameter drum 17 side. Further, in this embodiment, there is one intermediate ram 32, but a plurality of intermediate rams 32 may be provided around the large-diameter drum 14, and they may be sequentially connected by gears.

A string-like elastic body 35 is stretched between the small-diameter stock drum 16 and the large-diameter stock drum 15 along the following path. This elastic body 35 is made of a material that can store strain energy inside when stretched.6 The elastic body 35 is fixed at one end on the small diameter stock drum 16 and at the other end on the large diameter stock drum 15. It is wound in multiple layers on the small-diameter stock drum 16 before energy input, and after energy is stored, it is transferred and wound on the large-diameter stock drum 15 in multiple layers. The elastic body 35 moves from above the small-diameter stock drum 16 to a guide block 36 that reciprocates on the guide shaft 31, a guide roller 42 supported by the guide block 36, a guide roller 43, a guide roller 44, and a guide shaft 29 that moves intermittently. It is wound around the small diameter drum 17 via the guide block 37 that is moved. After being wrapped around the small diameter drum 17 for one or two rounds, the guide block 38 is intermittently moved on the guide shaft 30 by the same amount in the same direction in synchronization with the guide block 37, and the guide roller 45 supported by the guide block 38 , is inserted through the fixed shaft 13 to the other end via the guide rollers 46 and 47, and from there via the guide roller 4B, guide roller 49, guide roller 50, and guide block 39 that is intermittently moved on the guide shaft 27. intermediate drum 32
wrapped around. After being wound around the intermediate drum 32 for 1 to 2 turns, it is wound around the large diameter drum 14 for 1 to 2 turns. From the large diameter drum 14, a guide plotter 40 is moved intermittently on the guide shaft 26 by the same amount in the same direction in synchronization with the guide block 39, a guide roller 51 supported by the guide plotter 40, a guide roller 52, and a guide roller 53, guide block 4 reciprocating on the guide shaft 28
1 onto a large diameter stock drum 15.

The guide shaft 28 is a gear transmission mechanism 5 with a large reduction ratio.
4. It is connected to the guide shaft 26 via a Geneva mechanism 57 consisting of Geneva gears 55 and 56, and when the guide shaft 28 rotates to move the guide block 41 by one stroke as described later, the guide shaft 26 moves to the Geneva gear. The mechanism 57 rotates the guide block 40 intermittently for a predetermined period of time, thereby moving the guide block 40 along the guide shaft 26 for a predetermined period of time. In synchronization with this intermittent movement of the guide block 40, the guide shaft 27 is rotated via an appropriate interlocking means (for example, belt or chain transmission, interlocking by a motor, the path shown), and the guide block 39 is rotated in the same direction as the guide block 40. It is designed to be moved intermittently by the same amount in the direction. This intermittent movement of the guide block 40.39 is caused by the elastic body 35 on the large diameter stock drum 15.
The gear transmission mechanism 5
4. A Geneva mechanism 57 is set, and the intermittent movement changes the winding position of the elastic body 35 on the outer peripheral surfaces of the large diameter drum 14 and the intermediate drum 32, so these intermittent movement mechanisms change the winding position. It constitutes a means of change. A similar mechanism is also provided on the small diameter drum 17 side. Guide shaft 3
1 is connected to the guide shaft 29 via a Geneva mechanism 61 consisting of a gear transmission mechanism 58 and Geneva gears 59 and 60, and the guide blocks 37 and 38 are connected to the small diameter stock drum 16 through appropriate interlocking means. The elastic body 35 is intermittently moved by the same amount in the same direction in accordance with the change in the number of winding layers of the elastic body 35 above.

The intermittent movement mechanism described above can also take other structures. For example, as shown in FIG. 5, a winding layer detection sensor 62 (for example, a differential transformer) capable of detecting the winding layer number is provided opposite the large-diameter stock drum 15, and the winding layer number change signal from the sensor 62 is Based on this, the motor 63 can be rotated intermittently, the guide shaft 26 can be rotated, and the guide block 40 can be moved intermittently.

In the case of an apparatus configuration in which the number of winding layers changes synchronously on the large-diameter stock drum 15 and the small-diameter stock drum 16, the signal from the winding layer detection sensor 62 can also be used as a signal for the small-diameter drum side.

Large diameter stock drum I5 and small diameter stock drum 16
A guide block 41.36 is reciprocated on a guide shaft 28.31 in order to wind the elastic body 35 at a constant pitch and in multiple layers. This mechanism is constructed as shown in FIGS. 2 to 4. Although FIG. 0 shows the large-diameter stock drum side, the structure is similar for the small-diameter stock drum side.

Guide shaft 28 (guide shaft 31 on the small diameter stock drum side)
) consists of a traversing cam shaft with a reciprocating helical guide 464 formed thereon and a groove 64 at both ends with smooth direction change, and a guide 65 guided along the groove 64 on the shaft 28. A guide block 41 (guide block 36 on the small diameter stock drum side) supported via a linear bearing 66 is reciprocated along the shaft 28 as the shaft 28 rotates. A guide ring 68 is rotatably supported on the guide block 41 via a bearing 67, and the elastic body 35 is guided via a guide roller 52 and a guide roller 53 supported by the guide block 41. It is guided to the large diameter stock drum 15 via the guide ring 68. By detouring the guide roller 52 and guiding the elastic body 35 to the guide roller 53, even if the position of the guide block 41 changes from the position shown by the solid line in FIG. 2 to the position shown by the two-dot chain line, it is moved. Changes in the length of the elastic body 35 can be prevented. The guide roller 52 and the guide block 41 are connected to spiral springs (product name: Kobling) 69, 70 (swirl springs 69a and 70a on the small diameter stock drum side) that can generate a constant tensile force, as shown in FIG. If the tension of the elastic body 35 is Fl, then the tensile force of the spiral spring 70 is set to 2F1 so as to cancel out the elastic body tension applied to the guide roller 52, and the tensile force of the spiral spring 69 is F, , so that the tension of the elastic body in the opposite direction applied to the guide roller 53 can be offset. Therefore, the tension of the elastic body in the left-right direction in the figure is not applied, and the guide block 41 is moved smoothly and lightly.

Guide shaft 28 for reciprocating the guide block 41
is connected to one flange of a large-diameter stock drum 15 whose outer peripheral surface is configured as a gear, via a gear 71 fixed to the guide shaft 28 and a gear 72 rotatably supported by the arm 20. The reciprocating movement of the guide block 41 is performed in proportion to the number of rotations of the arm 20. In order to provide the same function on the small diameter stock drum 16 side, gear 73
．． 74 are provided.

The outer circumferential surfaces of the arms 20 and 21 are configured with gears, and both are connected to a gear 75, a continuously variable transmission 76, and a gear 7.
7. They are connected via gears 78, 79, and 80 so that the rotation speed ratio can be adjusted. An elastic body 35 is placed at an appropriate position on the elastic body path from the small diameter drum 17 to the intermediate drum 32.
A tension sensor 81 is provided to detect the tension of the tension sensor 81, and based on the signal of the tension sensor 81, the continuously variable speed @76 is adjusted so that the tension detected by the tension sensor 81 can be maintained at a predetermined value.

Energy input and output is carried out by a gear 82 fixed to the arm 18.
This is done by meshing a gear 83 with the gear 83 and rotating a shaft 84 coaxial with the gear 83.

Note that 85 indicates a support for the shaft 84.

The operation of the device configured as above will be explained.

First, energy input will be explained. In the initial state before energy input, the elastic body 35 is wound in multiple layers on the small-diameter stock drum 16, and the large-diameter stock drum 15 is wrapped around the small-diameter stock drum 16.
There is almost no elastic body 35 on top, and its ends are fixed on the drum. When rotational energy is input from input shaft 84, arm 18 is rotated via gears 83 and 82. At this time, the arms 19.20 also rotate in the same manner because they are connected via the guide shafts 26.27 and 28. The rotation of the arm 20 is controlled by gears 75.77.78.7.
9.80 and the continuously variable transmission 76 to the arm 21, and the arm 21 and the arm 22.23 connected to the arm 21 via the guide shaft 31 and the guide shaft 29.30 are rotated. As the arms 21 and 22 rotate, the guide shaft 31 and the guide block 36 revolve around the small diameter stock drum 16, and the elastic body 35 on the small diameter stock drum 16 is unwound.

When being unwound, the guide plotter 36 reciprocates on the guide shaft 31. The unwound elastic body 35 passes through the guide block 36 and guide rollers 42, 43, 44.
It is wound onto the small diameter drum 17 from the guide plotter 37. The winding position on the small-diameter drum 17 made of a Taber drum is the same diameter as the winding diameter at the time of unwinding from the small-diameter stock drum 16, and the guide blocks 37 and 38 are set so that the elastic body is at this position. Position controlled. This position control is performed according to changes in the number of winding layers on the small-diameter stock drum 16, so the small-diameter stock drum 16,
Between the small-diameter drums 17, even if the number of winding layers changes on the small-diameter stock drum 16, the tension of the elastic body 35 does not change, so that the elastic body 35 is prevented from becoming too loose.

Elastic body 3 inserted through fixed shaft 13 from small diameter drum 17
5 is wound from the guide block 39 onto the intermediate drum 32 and then onto the large diameter drum 14. The diameters between the small-diameter drum 17, the intermediate drum 32, and the large-diameter drum 14 are set so that the amount of outer circumference rotation increases sequentially, so that the diameter between the small-diameter drum 17 and the intermediate drum 32, and between the intermediate drum 32 and the large-diameter drum 14 and the elastic body 35
is stretched, and strain energy is stored.

The elastic body 35 in which strain energy is stored is connected to the large diameter drum 14.
From the guide block 40. It is transferred onto the large-diameter stock drum 15 via the guide block 41 and the like, and finally wound on the large-diameter stock drum 15 in multiple layers. By reciprocating the guide block 41 in proportion to the rotation of the large-diameter stock drum 5, the elastic body 35 is wound in an orderly manner at a constant pitch, and by changing the direction of the guide block 41, the number of layers increases. Increased.

Even in this transitional winding from the large diameter drum 14 to the large diameter stock drum 15, the winding diameter on the large diameter drum 14 and the winding diameter on the large diameter stock drum 15 at that time are made to be the same diameter. , the position at which the elastic body is wound on the large-diameter drum 14, which is a tapered drum, is controlled. This control is performed by intermittently moving the guide block 40.39, and the intermittent movement is carried out via the gear transmission mechanism 54 and the Geneva mechanism 57 as described above. This is done in response to changes in Therefore, between the large diameter drum 14 and the large diameter stock drum 15, the tension of the elastic body 35 is basically kept constant,
Excessive tension of the elastic body 35 is prevented. Furthermore, due to the synchronized intermittent movement of the guide blocks 39 and 40, the winding positions on the large-diameter drum 14 and the intermediate drum 32 are changed by the same amount at the same time. The tension is also kept constant.

In addition, when energy is input, the number of winding layers increases on the large diameter stock drum 15, and accordingly, the elastic body wrapping position on the large diameter drum 14 and intermediate drum 32 changes sequentially to the large diameter side on the tapered drum. However, on the small-diameter stock drum 16, the number of winding layers decreases and the winding diameter decreases (therefore, the elastic body winding position on the small-diameter drum 17 is gradually shifted to the small-diameter side. Between the small diameter drum 17 and the intermediate drum 32, the circumferential speed difference at the elastic body wrapping position is about to increase.However, a continuously variable transmission 76 is interposed between these re-rotation drive systems, and the tension sensor 81
The continuously variable transmission 76 keeps the detected tension constant.
Since the gear ratio is adjusted, the tension of the elastic body between the small diameter drum 17 and the intermediate drum 32 is also maintained at a constant predetermined value.

In this way, despite changes in the number of winding layers of the elastic body 35 on the small-diameter stock drum 16 and the large-diameter stock drum 15, the tension of the elastic body at each part is maintained at a predetermined value, and stable energy input characteristics can be obtained. .

At the time of energy output, the elastic body 35 is moved in the opposite direction to that described above, but the effect accompanying the change in the number of winding layers is substantially the same, and stable output characteristics can be obtained.

Also, Figure 6 shows the large diameter drum 1 seen from the X direction in Figure 1.
4. The large diameter stock drum 15, the elastic body 35, and the guide block 41 (40) are shown.
When the number of winding layers increases from the elastic body introduction posture as shown in A (derived at the time of energy output) to the introduced posture as shown in B,
On the large-diameter drum 14, which is a tapered drum, the leading-out position as shown in C is sequentially changed to the leading-out position as shown in D (introduced when outputting energy), so as shown in FIG. The tension F and the introduced tension F2 of the elastic body are symmetrical between the guide plotter, and their rotational direction components FIN and Fo are opposite in direction but have the same magnitude and cancel each other out. However, F IV + F tv indicates a radial direction component. Therefore, the torque that rotates the arm is not generated, nor is it generated when the number of winding layers changes, and wasted torque in terms of energy output is generated in this part. There is nothing to do (nor is it required).

Further, as mentioned above, guide rollers 52, 53 and 42
．． The length of the elastic body 35 is kept unchanged by the spiral spring 69.43 to prevent the generation of unspecified tension.
70, 69a, and 70a balance the tension of the elastic body so that the guide block 4136 can reciprocate smoothly, so winding and unwinding around the large-diameter stock drum 15 and the small-diameter stock drum 16 also generate unnecessary torque. It is carried out smoothly without causing any trouble.

〔Effect of the invention〕

As explained above, when using the elastic energy storage device of the present invention, the tension of the elastic body can be kept constant even if the number of winding layers changes in an energy storage device in which the elastic body is wound in multiple layers and the total amount of input and output energy is large. It is possible to maintain stable energy input/output characteristics by preventing the elastic body from becoming too tight or too warm.

In addition, we have provided a large-diameter stock drum and a small-diameter stock drum, and separated the elastic body storage function from the large-diameter drum and small-diameter drum, so that multi-J! It becomes possible to significantly increase the number of winding layers in a winding, and it is possible to further improve the total amount of output energy.

Furthermore, since the large-diameter drum and the small-diameter drum are fixed types that do not rotate, it is possible to simplify the rotational drive system, and it is also possible to make the device more compact.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an elastic energy storage device according to an embodiment of the present invention, FIG. 2 is an enlarged partial configuration diagram of the device in FIG. 1, and FIG.
4 is a partial cross-sectional view of the device shown in FIG. 3; FIG. 5 is a partial configuration diagram showing a method different from the device shown in FIG. 1 for winding layer detection and control; Figure 6 is a partial configuration diagram in the direction of the X arrow in Figure 1, Figure 7 is an explanatory diagram showing the vector of the elastic body tension of the device in Figure 6, and Figure 8 was proposed in Japanese Patent Application No. 168033/1983. FIG. 9 is an energy output efficiency characteristic diagram of the device shown in FIG. 8; FIG. 10 is an energy output efficiency characteristic diagram of the two-drum type energy storage device. 11...Housing 12...Side plate 13...Fixed shaft 14...Large diameter drum 15...Large diameter stock drum 16... ...Small diameter stock drum 17...Small diameter drum 18.19.20.21.22.23...Arm 26.27.28.29.30.31... Guide shaft 32...Intermediate drum 33.34...Gear 35...Elastic body 36.37.38.39.40.4I...Guide block 42 .43.44.45.46.47.48
, 49.50.51°52.53...Guide roller 54.58...Gear transmission mechanism 55.56.59.60...Geneva gear 57.
61... Geneva mechanism 62... Winding layer detection sensor 63... Motor 64... Guide groove 65... Guide element 68... ...Guide rings 69.70.69a, 70a-"Spiral spring 717
2...Gear 76...Continuously variable transmission 81...Tension sensor 82.83...Gear 84...Input/output shaft 2nd Figure 3 Figure 6 Figure 7

Claims (1)

[Claims] 1. A large-diameter drum that does not rotate and has a tapered drum surface tapered in the direction along the drum axis, and a large-diameter stock drum that is placed coaxially with the large-diameter drum, and a drum that does not rotate and whose drum surface is tapered. A small-diameter drum consisting of a tapered drum tapered in the direction along the axis, a small-diameter stock drum arranged coaxially with the small-diameter drum, and the axis of the drum for either the large-diameter drum or the small-diameter drum. From a tapered drum having an axis parallel to the drum, the drum surface is tapered in the direction along the drum axis, and the drum surface is tapered in the direction along the drum axis, and the drum surface is tapered in the direction along the drum axis. at least one intermediate drum having an intermediate diameter with respect to the large diameter drum and the small diameter drum; , is stretched over the large-diameter stock drum via the outer peripheral surface of the large-diameter drum, the other end is fixed on the large-diameter stock drum, and is transferred between the tops of both stock drums to store its own strain energy. A string-like elastic body that can release stored strain energy and that can be wound in multiple layers on a large-diameter stock drum and a small-diameter stock drum, and a large-diameter stock drum and a small-diameter stock drum. a winding position changing means for changing the winding position of the elastic body on the outer circumferential surface of the large-diameter drum, the intermediate drum, and the small-diameter drum in a direction along the drum axis in accordance with a change in the number of winding layers of the elastic body; An elastic energy storage device comprising: