JPH0722519Y2 - Elastic energy storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention utilizes elastic deformation of a string-like elastic body to store energy, distorts a part of the elastic body by a certain amount, and Regarding the elastic energy storage device that is gradually expanded,
Particularly, the present invention relates to an elastic energy storage device capable of obtaining high energy input / output characteristics with a small number of drums.

[Prior Art] An energy storage device for storing energy by utilizing elastic deformation of an elastic body is disclosed in JP-A-49-96144. The device of this publication has two drums, and a device in which a string-like elastic body is stretched between the two drums, and the two drums rotate in the same direction.

In the energy storage device disclosed in JP-A-49-96144, when 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 having a small elastic elongation is used, sufficient initial strain cannot be imparted, resulting in a problem that the energy at the time of output becomes almost zero.

In order to solve this, a method of gradually distorting a part of the elastic body by a certain amount and gradually expanding the region by the applicant of the present invention, and at the same time, for an elastic body having a small elastic body elongation, a small-diameter drum is used. There has been proposed an energy storage device capable of efficiently inputting and outputting energy even when the initial strain in winding is 0 (Japanese Patent Application No. 61-168033).

The energy storage device of Japanese Patent Application No. Sho 61-168033 is, for example, as shown in FIG.
And a large-diameter drum 2 having a large outer peripheral rotation amount, an intermediate drum 3 (a plurality of intermediate drums 3 having an intermediate outer peripheral rotation amount may be provided),
A string-shaped elastic body 4 is stretched between the drums 1, 2, and 3.

The drums 1, 2, and 3 are connected by a mechanical connecting means 5, for example, a gear so that the outer peripheral rotation amount increases in order from the small diameter drum side to the large diameter drum side, and the string-shaped elastic body 4 is connected to the small diameter drum 1. The elastic body 4 is stretched by the transition winding from the side to the large diameter drum 2 side to store the strain energy thereof, and the strain energy stored in the elastic body 4 is released by the reverse movement.

In such an energy storage device, a conventional two-drum system (FIG. 9) and a conventional three-drum system in which drums having radii R1, R2, and R3 are connected by gears having the same number of teeth are shown in FIGS. As shown in comparison with the case of the drum system (Fig. 8), by providing an intermediate drum, energy input and output efficiency can be improved, and output can be obtained even when the initial strain of the elastic body is zero. Became possible. It has been found that the energy input / output efficiency increases as the number of intermediate drums increases.

In the energy storage device as described above, efficiency can be improved by increasing the number of intermediate drums as described above, but simply increasing the number of intermediate drums increases the size of the entire device in proportion to the increase. The problem remains. In addition, since each intermediate drum is sequentially connected by the mechanical connecting means, as the number of intermediate drums increases, the mechanical loss due to the mechanical connecting means increases. There is also a problem that the degree of improvement is small.

Therefore, although the application has not been published yet, the applicant previously provided a tapered drum 6 as an intermediate drum, as shown in FIG. 10, in which the drum surface is tapered in the direction along the drum axis, A plurality of pulleys 7 are provided adjacent to the taper drum 6, and the elastic body 10 spanned between the small-diameter drum 8 and the large-diameter drum 9 is attached to the plurality of pulleys 7 and the taper drum 6.
A structure has been proposed (Japanese Patent Application No. 1-87037) in which one taper drum 6 is capable of exerting the same function as a plurality of intermediate drums in succession.

[Problems to be Solved by the Invention] However, in the above proposed structure, since the plurality of pulleys 7 are arranged only on one side of the taper drum 6, the tension of the elastic body 10 spanned between these pulleys a plurality of times is provided. Therefore, a large force acts on the shaft portion of the taper drum 6. In order to prevent the deflection and deformation of the shaft portion due to this force, the shaft may be thickened to increase the rigidity of the shaft portion, but this causes a problem of increased weight of the device. Further, since a large force also acts on the bearing portion that receives the shaft of the taper drum, there is a problem that friction loss increases and energy input and output efficiency decrease correspondingly.

The present invention focuses on the above-mentioned problems, aims to suppress the force applied to the taper drum shaft portion to a small size, and particularly to reduce the size and weight of the device. More preferably, at the same time, the energy input and output efficiency are improved. The purpose is to raise.

[Means for Solving the Problems] A first elastic energy storage device according to the present invention, which meets this object, arranges a plurality of drums such that their axes are parallel to each other, and arranges the plurality of drums. In order to increase the outer peripheral rotation amount in the order of installation and to be interlocked with each other, they are connected by a mechanical connecting means, and between the drum having the minimum outer peripheral rotation amount and the drum having the maximum outer peripheral rotation amount, an intermediate drum between the outer peripheral surfaces of both drums. In the elastic energy storage device having a string-shaped elastic body capable of storing its own strain energy by transferring through the outer peripheral surface and discharging the stored strain energy, , At least one taper drum whose surface is tapered in the direction along the drum axis is provided, and at the positions on both sides of the taper drum, respectively, Providing a plurality of pulleys arranged in parallel directions and capable of interlocking movement in the directions,
To the plurality of pulleys and the taper drum on both sides of the taper drum,
The elastic body is sequentially stretched over the taper drum so that the winding position of the elastic body on the taper drum gradually shifts from the small diameter side to the large diameter side.

In addition, the second elastic energy storage device according to the present invention arranges a plurality of drums such that their axes are parallel to each other, and the plurality of drums are arranged so that the outer peripheral rotation amount increases in the order of arrangement. It is rotatably connected by a mechanical connecting means, and between the drum having the minimum outer peripheral rotation amount and the drum having the maximum outer peripheral rotation amount, by moving between the outer peripheral surfaces of both drums via the outer peripheral surface of the intermediate drum, In an elastic energy storage device that spans a string-shaped elastic body capable of storing strain energy and releasing the stored strain energy,
As the intermediate drum, at least one tapered drum whose surface is tapered in the direction along the drum axis is provided, and is arranged laterally of the tapered drum in a direction parallel to the axis of the tapered drum and interlocks in that direction. A plurality of possible pulleys are provided, and the plurality of pulleys on the side of the taper drum and the taper drum are sequentially arranged such that the elastic body winding position on the taper drum sequentially shifts from the taper drum small diameter side to the large diameter side. A support body that bridges and supports the plurality of pulleys so as to be capable of interlocking movement is supported at both axial ends of the drum portion of the taper drum via bearings.

[Operation] In such a device, the elastic body is reciprocated a plurality of times between the plurality of pulleys and the taper drum, and is successively passed over different radial positions on the surface of the taper drum. Therefore, even with one taper drum, the intermediate drums with different diameters
The taper drum can have the same function as the number of times the elastic body is wound around the taper drum, that is, the function of sequentially expanding the strain of the elastic body, and high energy input and output efficiency can be obtained with a small number of drums.

Further, in the first device, since the plurality of pulleys are arranged on both sides of the taper drum, the taper drum is pulled to both sides via the elastic body, and the force applied to the taper drum from both sides is offset. , The force acting on the shaft portion of the taper drum can be suppressed to be small. As a result, a shaft having a small diameter is sufficient, and the force applied to the bearing portion can be suppressed to a small value.

Further, in the second device, the support body that supports the plurality of pulleys so as to be capable of interlocking movement is supported at both ends of the drum portion of the taper drum via bearings. Therefore, the tension of the elastic body stretched between the plurality of pulleys and the taper drum is received by the drum portion itself of the taper drum via the support body, and does not act on the shaft portion of the taper drum. As a result, the shaft of the taper drum only needs to have a small diameter, and the size and weight of the device can be reduced.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

First Embodiment FIGS. 1 to 3 show an elastic energy storage device according to a first embodiment of the present invention. In the figure, 11 is a small-diameter drum as a drum of the minimum outer peripheral rotation amount, 12 is a large-diameter drum as a drum of the maximum outer peripheral rotation amount, and 13 is an intermediate drum. The intermediate drum 13 is a tapered drum whose surface is tapered in a direction along the drum axis. The taper surface of the taper drum 13 may be formed in a linear taper, or may be formed in a curved taper as shown in the figure.

The shafts 14, 15, 16 of the plurality of drums are arranged so as to be parallel to each other (parallel to each other when seen in a plan view), and the small-diameter drum 11, the intermediate drum 13, and the large-diameter drum 12 are arranged in the same manner. They are connected by a mechanical connecting means 17 in such a manner that the outer peripheral rotation amount increases in the order of installation and they can rotate together. A string-shaped elastic body 18 is bridged between the small-diameter drum 11 and the large-diameter drum 12, and the elastic body 18 is bridged between the drums in a manner described below. The elastic body 18 is made of a material capable of storing strain energy therein by being stretched. When strain energy is accumulated, the elastic body 18 has a portion 18a wound around the outer peripheral surface of the small-diameter drum 11 rewound and sequentially stretched between the portion wound on the intermediate drum and the stretched elastic body. 18 is finally wrapped part 18b
As it is, it is wound on the outer peripheral surface of the large diameter drum 12. When releasing energy, the elastic body 18 is moved in the opposite direction to the above.

The elastic body 18 has a length of a plurality of winding layers wound around the outer peripheral surface of the small-diameter drum 11 before the strain energy storage and a plurality of winding layers wound around the outer peripheral surface of the large-diameter drum 12 after the strain energy storage. The length is set so that it can be wrapped. The drawing shows only the winding state of the uppermost layer of the elastic body 18.

Among the mechanical connecting means 17, for connecting the large diameter drum 12 and the intermediate drum 13, crank arms (or crank wheels) 19 and 19 'provided at the end of the shaft 16 and connecting rods 20 therefor, Crank arms 21, 21 'which are interlocked via 20', further crank arms 22, 22 ', connecting rod 2
3, 23 ', crank arms 24, 2 provided at the end of the shaft 15
4 ', and the large-diameter drum 12 and the intermediate drum 13 are synchronously rotated at the same rotation speed. The gear mechanism 2 is provided between the intermediate drum 13 and the small diameter drum 11.
5. Connected via the continuously variable transmission 26, the difference in rotational speed between the drums can be changed by adjusting the speed of the continuously variable transmission 26.

On both sides of the intermediate drum 13, there are provided a plurality of pulleys that are arranged in a direction parallel to the axis of the intermediate drum 13 and that can be interlockingly moved in that direction. In the present embodiment, the plurality of pulleys on both sides are roller stacks 27, 28 in which a plurality of pulleys having successively different diameters are integrally formed. Each roller stack 27, 28 has three pulleys 27a, 27b, 28c and 28a, 28.
It is composed of b and 28c integrally formed.
A guide pulley 29 is provided below the intermediate drum 13. The roller stack 27 is rotatably supported by the shaft 71a of the moving frame body 30a via a bearing 72, and the roller stack 28 is rotatably supported by the shaft 71b of the moving frame body 30b. The moving frame bodies 30a and 30b are configured to be interlocked and moved along the guide rails 31a and 31b. The interlocking movement method may be any appropriate method, for example, the moving frame bodies 30a and 30b may be mechanically connected. The guide rails 31a, 31b are arranged in the direction along the shaft 15 of the intermediate drum 13, and in the present embodiment,
The guide rail 31a is arranged so as to be inclined toward the larger diameter side of the intermediate drum 13 toward the intermediate drum 13, and the guide rail 31b is arranged in parallel to the guide rail 31a. A nut 32 is fixed to the moving frame body 30a, and the nut 32 is a guide rail 31a.
It is screwed to a screw rod 33 extending in parallel with. Therefore, the rotation of the screw rod 33 moves the moving frame body 30a along the guide rails 31a, the roller stack 27 is interlocked with the movement of the moving frame body 30a, and the roller stack 28 is moved in conjunction therewith. It is like this. The guide pulley 29 is a shaft extending in the direction along the shaft center of the intermediate drum 13.
It is movably supported on 73, and in this embodiment, the guide pulley 29 can also be moved in conjunction with the roller stacks 27, 28 via the elastic body 18 spanned by the guide pulley 29. There is. However, the interlocking movement of the guide pulley 29 may be performed by extending the moving frame body 30a to the guide pulley 29 portion and via it.

Elastic body hung from small-diameter drum 11 to large-diameter drum 12
After passing through the guide pulleys 34 and 35, the roller stack 27 rotatably supported in the moving frame body 30a, 18 is wound around the taper outer peripheral surface of the intermediate drum 13 on the smaller diameter side, and the intermediate drum 13 is sequentially rotated to the larger diameter side. After reciprocating three times between the roller stack 27 and the intermediate drum 13 so that the winding position shifts to the radial side, the roller stack 27 is passed over the roller stack 28 via the pulley 29. Then, after reciprocating between the roller stack 28 and the intermediate drum 13 twice, the roller stack 28 moves to the guide pulley.
After passing through 36 and 37, it is passed over the large diameter drum 12. That is, the order of passing over the elastic body 18 is the order of passes indicated by reference numerals 81 to 94 in FIG.

The screw rod 33 that controls the movement of the moving frame body 30a is the Geneva gear 3
It is connected to the gear mechanism 25 via 8, 39, and the movement is intermittently performed via the Geneva gears 38, 39 (Geneva mechanism). This intermittent movement is performed by the gear mechanism 25 that is rotated in conjunction with the large-diameter drum 12 to generate a Geneva gear.
This is done by rotating 38, 39 (Geneva mechanism), and these gear systems are set so that the intermittent feed is performed at the moment when the winding layer of the elastic body 18 changes on the large diameter drum 12. . By this intermittent feeding, the roller stack 27 on the moving frame body 30a is moved together with the moving frame body 30a, and the roller stack 28 is also moved in conjunction with it,
The winding position of the elastic body 18 on the taper drum 13 changes, and the winding diameter changes.

The guide pulley 34 is provided with an elastic body tension sensor 40 for detecting the tension of the elastic body 18, and a signal from the sensor 40 is transmitted to the continuously variable transmission via the gear mechanism 25 side and the miter gear 41.
It is sent to a clutch 42 which is connected to the adjusting mechanism section of 26.
The clutch 42 can adjust the acceleration and deceleration of the continuously variable transmission 26 through its operation, and is controlled so that the detection signal of the elastic body tension sensor 40 is maintained at a constant value.

The small-diameter drum 11 and the large-diameter drum 12 are supported by the shafts 14 and 16 by spline coupling or the like so as to be movable in the direction along the axis while transmitting torque. The small diameter drum 11 and the large diameter drum 12 are linked with the small diameter drum base 47 and the large diameter drum base 48 via thrust bearings 43, 44 and 45, 46. The small-diameter drum base 47 and the large-diameter drum base 48 are provided with arms 49 and 50, respectively,
The arms 49, 50 are provided with guides 55, 56 which are guided along the spiral guide grooves 53, 54 of the weaving rods 51, 52 extending in the direction along the drum axis. Guide 55, 56
Are guided along the guide grooves 53, 54, so that the small-diameter drum 11 and the large-diameter drum are guided via the drum bases 47, 48.
12 is reciprocated in the direction along the axis, and this reciprocation is interlocked with the rotation of each drum 11, 12 via gears 57, 58 and 59, 60, so that the elastic body 18 is placed on the outer peripheral surface of the drum. The wound layers are wound without a gap or are unwound in order, and the winding layers are changed by changing the direction of reciprocation.

Reference numeral 61 in FIG. 1 denotes an input / output shaft of the present device, and energy is input / output via gears 62, 63.

In the elastic energy storage device according to the first embodiment configured as described above, the elastic body 18 is initially set when energy is input.
Are wound in multiple layers on the outer peripheral surface of the small diameter drum 11.
When each drum is rotationally driven by the input / output shaft 61 and the output gears 62 and 63, the elastic body 18 is rewound from the small diameter drum 11 and sequentially wound around the intermediate drum 13 via the roller stacks 27 and 28. The elastic body 18 is moved to the rear large diameter drum 12 side and the strain is increased between the respective drums and between the winding positions of the intermediate drum 13, and is sequentially wound around the outer peripheral surface of the large diameter drum 12.

Although only one taper drum 13 is used as the intermediate drum, the elastic body 18 makes a plurality of reciprocations between the roller stacks 27 and 28, and the winding position is sequentially moved to the large diameter side on the same taper drum. Therefore, the elastic body 18 is sequentially stretched as if a plurality of intermediate drums having different roller radii are arranged. Therefore, even with only one intermediate drum 13, the strain of the elastic body 18 will be sequentially increased even at the intermediate drum 13 portion, and like the arrangement of a large number of intermediate drums, extremely high efficiency energy input, Output is possible. Also, compared with the case of arranging a large number of intermediate drums, the number of gears and the like in the mechanical coupling means can be smaller and the elastic body guiding means such as guide pulleys can be smaller, so that mechanical loss and friction loss can be reduced. Becomes smaller and the efficiency is further improved.

Between the roller stack 27 and the intermediate drum 13, the elastic body 18
A force that tries to pull the intermediate drum 13 toward the roller stack 27 side acts through the roller stack 28 and the intermediate drum 13.
With respect to 13, a force to attract the intermediate drum 13 to the roller stack 28 side acts via the elastic body 18, but since both forces are in opposite directions, these forces are partially Or they are almost completely offset. Therefore, the force applied to the shaft 15 of the intermediate drum 13 is suppressed to a small value, and the shaft 15 may have a small diameter. Therefore, it is possible to reduce the diameter and weight of this portion, and thus to reduce the size and weight of the entire device.

Further, by canceling the above forces, the force acting on the bearing (not shown) that supports the shaft 15 can also be suppressed to a small level, so that the friction loss in this portion can be suppressed to an extremely small level. Therefore, the loss in energy input and output is reduced, and the energy input and output efficiency of the device is improved.

Second Embodiment Next, FIGS. 4 to 6 show an elastic energy storage device according to a second embodiment.

In this embodiment, the roller stack 140 having a plurality of pulleys is provided only on one side of the tapered drum 113. The elastic body 118 from the small diameter drum 111 is a roller stack.
It is wound around the large-diameter drum 112 after being passed over a plurality of times between each pulley of 140 and the outer peripheral surface of the taper drum 113.

The tapered drum 113 is movably supported on the shaft 115 via a slide bearing 181 in a direction along the shaft. Bearings 138a and 138b are provided at both axial ends of the drum portion of the tapered drum 113, respectively.
Both side plates 144a, 144 of the U-shaped support 139 via 138b.
b is supported. The support body 139 includes the side plates 144a and 144b.
A reinforcing plate 145 extending between the both side plates and a slide guide 143 fixed to the plate 145. The roller stack is relatively movable on the slide guide 143 in the extending direction of the slide guide 143. 140 holders 1
41 are supported. Roller stack 140 holder 141
Are supported by slide supports 146 by supports 142a and 142b fixed on the base plate 147 so as to be movable in a small amount in a direction toward and away from the tapered drum 113.
The roller stack 140 is supported by the supports 142a and 142b in the direction along the axis 115 of the taper drum 113 and the taper drum 113.
The position is restricted (fixed) in the rotation direction of.

An arm 148 is projectingly provided on one side plate 144b of the support 139, and a nut 132 fixed to the arm 148 is attached to the screw shaft 13
1 is screwed. By the rotation of the screw shaft 131, the taper drum 113 and the support 139 are moved in the direction along the shaft 115 via the arm 148. Arm 148 and nut 132 above
May be provided on the other side plate 144a side. Side plate 144b
A rod 152 is attached to the outer side of the rod 152, and a striker 153 is attached to the rod 152. By detecting the position of the striker 153 that moves together with the taper drum 113 with the limit switches 104, 105, 106,
The position of the taper drum 113 can be detected.

In this embodiment, the mechanical connecting means for mechanically connecting the drums is configured as follows.

The shaft 116 of the large diameter drum 112 and the shaft 115 of the taper drum 113 are
Crank arms (or crank wheels) 119, 119 ',
They are connected via connecting rods 120, 120 'and crank arms 118, 118'. Shaft 115 has gears 125, 126, clutch 16
5, mechanically coupled via a brake 164, gears 127, 128 to a screw shaft 131. The screw shaft 131, when the number of winding layers of the elastic body 18 on the large-diameter drum 112 changes,
It is driven to rotate intermittently, and this intermittent rotation is driven by the clutch.
Controlled by 165 and brake 164.

The shaft 115 of the taper drum 113 and the shaft 114 of the small diameter drum 111 are
The variable pulley assembly 180 is connected to the variable pulley assembly 180. By adjusting the variable pulley assembly 180, the gear ratio can be changed. The gear ratio is controlled by detecting the position of the tension roller 150 with the limit switches 102 and 103 via the striker 151 that moves integrally with the tension roller 150, and the striker 151 detects both the limit switches 102 and 103.
The variable pulley assembly 180 is adjusted by the pilot motor 166 via the gears 130 and 129 so that the elastic body 18 between the taper drum 113 and the small diameter drum 111 has a certain tension so that it is located between them. It is done by

The weaving rod 169 is driven from the shaft 116 of the large diameter drum 112 via the gears 121 and 122, and the shaft 114 of the small diameter drum 111 is driven.
Drive the weaving rod 168 via gears 123,124. Spiral groove 17 on weaving bar 169, 168
A guider (not shown) similar to that of the first embodiment is inserted in the reference numerals 1 and 170. The brake 60 (for the left row in FIG. 4), the brake
The guider moves in the spiral groove extending direction by the on / off control of 61 (for the right row in FIG. 4), brake 62 (for the left row in FIG. 4), and brake 63 (for the right row in FIG. 4). It is possible to control whether or not to rotate or to rotate together with the spiral groove and each axis. Therefore, by controlling each of these brakes, the large-diameter drum 112 and the small-diameter drum 111 are controlled to move leftward or rightward in FIG. In addition, 100, 10
Reference numerals 1, 107 to 110 denote limit switches for detecting the moving ends of the small-diameter drum 111 and the large-diameter drum 112, and the positions immediately before the movement.

In the second embodiment configured as described above, since the roller stack 140 is provided only on one side of the taper drum 113, the tension of the elastic body 18 applied between them causes the two to draw each other. Power acts.
This force is transferred from the holder 141 of the roller stack 140 to the support
It is transmitted to the taper drum 113 via 139
Since both side plates 144a and 144b of 139 are supported by the drum portion of the taper drum 113 via bearings 138a and 138b, the force is eventually received by the drum portion itself. Therefore, the tension of the elastic body 18 does not act on the shaft 115 of the tapered drum 113 and the bearing portion thereof. Therefore, the shaft 115 need only have a small diameter, and it is possible to reduce the size and weight of this portion where a large force has conventionally been applied.

Further, in this embodiment, the holder 141 of the roller stack 140 is
But support 142a, 142 through slide bearing 146
In contrast to b, the taper drum 113 can be moved toward and away from the taper drum 113. Therefore, even if the slide base 143 or the like bends due to the tension of the elastic body, the bending is difficult due to the minute movement of the roller stack 140. Absorbed without. As a result, the force due to the tension of the elastic body does not act between the screw shaft 131 and the nut 132 fixed to the arm 148 protruding from the support body 139. Therefore, the screw shaft 131 can be lightly rotated, and the intermittent movement of the taper drum 113 can be smoothly performed.

[Effects of the Invention] As described above, according to the elastic energy storage device of the first aspect of the present invention, a plurality of pulleys are provided on both sides of the intermediate drum made of a taper drum, and both pulleys are provided on both sides of the intermediate drum. The elastic body can be sequentially stretched in the same manner as in the case where a large number of intermediate drums are interposed by one intermediate drum, while the elastic body is stretched a plurality of times, and the force acting from both sides on the intermediate drum via the elastic body is applied. Since they cancel each other, the force applied to the shaft portion of the intermediate drum can be suppressed to a small value, and the miniaturization of the shaft portion can promote the reduction in size and weight of the entire apparatus. Further, since the force applied to the bearing portion of the intermediate drum is also reduced, the friction loss can be reduced, and the energy input and output efficiency of the device can be greatly improved.

In the elastic energy storage device according to the second aspect of the present invention, a plurality of pulleys are provided on the side of the tapered drum,
Since the supporting body of the pulley is supported by the drum portion of the taper drum via the bearing, the tension of the elastic body applied between the taper drum and the pulley is received by the drum portion of the taper drum itself, and the shaft portion of the taper drum, the bearing This force can be prevented from acting on the portion, and the shaft can be made thin so that the overall size and weight of the device can be reduced.

[Brief description of drawings]

1 is a schematic plan view of an elastic energy storage device according to a first embodiment of the present invention, FIG. 2 is an enlarged partial plan view of the device of FIG. 1, FIG. 3 is a front view of the device of FIG. FIG. 4 is a schematic plan view of an elastic energy storage device according to a second embodiment of the present invention, FIG. 5 is an enlarged partial perspective view of the device of FIG. 4, and FIG. 6 is a partial sectional view of the device of FIG. FIG. 7 is a plan view of the display, FIG. 7 is a perspective view of the energy storage device proposed in Japanese Patent Application No. 61-168033, FIG. 8 is an energy output efficiency characteristic diagram of the device of FIG. 7, and FIG. FIG. 10 is an energy output efficiency characteristic diagram of the storage device, and FIG. 10 is a schematic plan view of the energy storage device proposed in Japanese Patent Application No. 1-87037. 11, 111 ...... Minimum outer peripheral rotation amount drum 12, 112 …… Maximum outer peripheral rotation amount drum 13,113 …… Intermediate drum (tapered drum) 14, 15, 16, 114, 115, 116 …… Drum shaft 17 …… Mechanical connecting means 18 ... Elastic bodies 19, 19 ', 21, 21', 22, 22 ', 24, 24', 118, 11
8 ', 119, 119' ... crank arm 20, 20 ', 23, 23', 120, 120 '...... connecting rod 25 ...... gear mechanism 26 ...... continuously variable transmission 27, 28, 140 ...... multiple Roller stack as pulley 29 …… Guide pulleys 30a, 30b …… Moveable frame bodies 31a, 31b …… Guide rails 32,132 …… Nuts 33,131 …… Screw rods 34,35,36,37 …… Guide pulleys 38 , 39 …… Geneva gear 40 …… Elastic body tension sensor 42, 165 …… Clutch 47, 48 …… Drum base 51, 52, 168, 169 …… Weaving rod 53, 54, 170, 171 …… Guide groove 55, 56 ...... Guide 61 …… Input and output shafts 71a, 71b …… Shaft 72 …… Bearing 73 …… Shafts 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 9
3, 94 ...... Elastic path 138a, 138b …… Bearing 139 …… Support 140 …… Roller stack 141 …… Holder 142a, 142b …… Support 143 …… Slide guide 144a, 144b …… Side plate 145 …… Reinforcement Plate 146 …… Slide bearing 147 …… Base plate 148 …… Arm 180 …… Variable pulley assembly 181 …… Slide bearing

Claims (2)

[Scope of utility model registration request] 1. A plurality of drums are arranged such that their axes are parallel to each other, and the plurality of drums are connected by a mechanical connecting means such that the outer peripheral rotation amount becomes large and they can rotate in an interlocking manner in the order of arrangement. However, between the drum having the minimum outer peripheral rotation amount and the drum having the maximum outer peripheral rotation amount, the strain energy of itself is stored by transferring the outer peripheral surfaces of both drums via the outer peripheral surface of the intermediate drum. In an elastic energy storage device having a string-shaped elastic body capable of releasing strain energy, at least one taper drum whose surface is tapered in a direction along a drum axis is provided as the intermediate drum. At the same time, a plurality of pulleys that are arranged in a direction parallel to the axis of the taper drum and are interlockingly movable in the direction are provided at both sides of the taper drum. Elastic energy is stored over the plurality of pulleys and the taper drum on one side so that the elastic body winding position on the taper drum sequentially shifts from the taper drum small diameter side to the large diameter side. apparatus. 2. A plurality of drums are arranged such that their axes are parallel to each other, and the plurality of drums are connected by a mechanical connecting means so that the outer peripheral rotation amount becomes larger and they can rotate in an interlocking manner in the order of arrangement. However, between the drum having the minimum outer peripheral rotation amount and the drum having the maximum outer peripheral rotation amount, the strain energy of itself is stored by transferring the outer peripheral surfaces of both drums via the outer peripheral surface of the intermediate drum. In an elastic energy storage device having a string-shaped elastic body capable of discharging strain energy, at least one taper drum whose surface is tapered in a direction along a drum axis is provided as the intermediate drum. A plurality of pulleys arranged in a direction parallel to the axial center of the taper drum and arranged so as to be interlockingly movable in the direction, and the plurality of pulleys on the side of the taper drum are tapered. A support body that sequentially bridges the elastic body so that the winding position of the elastic body on the taper drum sequentially shifts from the small diameter side of the taper drum to the large diameter side, and supports the plurality of pulleys so that they can move in an interlocking manner. , At both axial ends of the drum portion of the taper drum via bearings,
An elastic energy storage device characterized by being supported.