JPS63190963A - Energy storage device - Google Patents

Abstract

PURPOSE:To aim at compactification in a device, by installing at least two pieces of a third drum as an intermediate drum, and constituting these drums into each stepped drum having plural diameter parts. CONSTITUTION:Each of intermediate drums 8 and 9 as two third drums to be set up between a small diametral drum 6 as a first drum and a large diametral drum 7 as a second drum is constituted into a stepped drum. And, an elastic body 14 is stretched across so as to be shifted in consecutive order from the small diametral part to the large diametral part, namely, as in 8a 9a 8b 9 b 8c 9c alternately between these stepped drums 8 and 9. Accordingly, even if the number of actual drums is little, such a function as being equal to the case the drums of the same number as the number of each diametral part have been set up there, is securable. Therefore, it has the function of a multistage intermediate drum (the third drum), and whereas it is a highly efficient energy storage device, the number of actual intermediate drums is sharply reduced, thus the device is miniaturized as a whole.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention stores energy by utilizing the elastic deformation of four pushing bodies, causes a large constant strain in a part of the elastic body, and sequentially deforms the strained area. The present invention relates to an expanding energy storage device M, and particularly to an energy storage device that is made more compact.

[Prior Art] 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 has two drums, and consists of a device in which an elastic body is stretched around the two drums, and the two drums rotate in the same direction.

In the energy storage device disclosed in JP-A-19-96144, if the initial strain of the elastic body wound around the small diameter drum is O, the energy at the time of output is O, and the efficiency is 0%. Therefore, when an elastic body with low elastic elongation is used, a sufficient initial strain cannot be imparted, so there is a problem that the energy at the time of output is almost O.

In order to solve this problem, the applicant proposed a method in which a part of the elastic body is distorted by a certain amount to gradually expand the area, and at the same time, the elongation of the elastic body is Japanese Patent Application No. 16803/1983 for the provision of an energy storage device that can efficiently output energy even when the initial strain of a small elastic body wrapped around a small diameter drum is O.
No. 3).

The energy storage device disclosed in Japanese Patent Application No. 61168033 consists of a first drum with a small amount of outer circumference rotation and a second drum with a large amount of outer circumference rotation.
A third drum with an intermediate amount of rotation of the outer periphery is provided between the two drums, and a string-like elastic body is stretched between these drums.

[Problem 1 to be solved by the invention According to the above proposal, a large number of intermediate drums (third drum)
It was found that the efficiency of the system increases as the number of drums increases. However, as the number of drums increases, the overall size of the apparatus increases, and when mounted on a vehicle or the like, problems arise in terms of installation space.

The present invention aims to make the energy storage device of the type disclosed in Japanese Patent Application No. 168033/1980 more compact.

[Means for Solving and Overcoming the Problems] The energy storage device of the present invention which meets this purpose comprises a plurality of drums arranged in parallel to each other and mechanically connected one after another by gears or the like so that torque can be transmitted. A first drum with a smaller outer circumferential rotation amount and a second drum with a larger outer circumferential rotation amount, which have a magnitude relationship between the outer circumferential rotation amount of the first drum and the second drum arranged between these drums. and a third drum that is movable in the axial direction and has an outer circumferential rotation amount that is intermediate between the outer circumferential rotation amount of An energy storage device in which an elastic body is spanned, wherein the third drum is composed of at least two drums parallel to each other, and the third drum is composed of at least two drums having a plurality of diameter parts and a plurality of diameter parts. It consists of a stepped drum arranged in order from the small diameter side to the large diameter side. Then, the elastic body from the first drum is hung on the minimum diameter part of the negative drum of the third drum.
From there, it is passed to the smallest diameter part of the other drum of the third drum, and from that third drum it is again passed to the next diameter part of the above-mentioned drum. It is successively passed between the drums, moving from the small diameter side to the large diameter side, and finally the 1 trigram is passed to the second drum.

[Function] In such an energy storage device, the plurality of third drums disposed between the first and second drums are configured as stepped drums, and the stepped drums alternately, Since the elastic body is spanned so as to move sequentially from the small diameter section to the large diameter section (or from the large diameter section to the small diameter section), even if the actual number of drums is small, the new device has the same number of drums as the number of each diameter section. You can get the same functionality as the previous version. Therefore, although it has the function of a multi-stage intermediate drum (third drum) and is a highly efficient energy storage device, the actual number of intermediate drums is significantly reduced, making the entire device smaller. .

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

First Embodiment FIG. 1 shows an energy storage device according to a first embodiment of the present invention. In the figure, 1 indicates a support body,
Four shafts 2.3.4.5 parallel to H are rotatably supported on the support 1.

A small-diameter tram 6 as a first drum is attached to the shaft 5 in the case 2.
A large-diameter drum 7 serving as a second drum is supported so as to rotate together with the respective shafts.

A stepped tram 8.9 as a third drum is mounted on each shaft 3.4 so as to rotate integrally with the shaft.
is supported so as to be movable in the direction along the axis of the

One end side of each 1TIllI2.3.4.5 has a gear 10.
．． 11, 12, and 13 are provided, and the respective shafts are mechanically connected by these gears so that l.lux can be transmitted in sequence. In this embodiment, each gear 10.11.12.13
is composed of gears with the same teeth, and by sequentially increasing the diameter of each drum in the direction from the first drum 6 to the second drum 7, the amount of rotation of the outer circumference of each drum in this direction is sequentially increased. It is set to become large.

A string-like elastic body 14 is stretched from the first drum 6 to the second drum 7 via the third drum 8.9, and the elastic body 14 is stretched. It is made of a material that can store strain energy inside it.

Each of the pair of third trams 8.9 is configured as a stepped drum having a plurality of diameter sections arranged in order from a small diameter section to a large diameter section. In this embodiment, the drum 8.
9 are both constructed as three-stage stepped trams, and the greater the number of stages, the better the energy storage efficiency. Also, the 3rd degree
If there are at least two drums, it is possible to have more water.

The elastic body 14 is passed around the pair of drums 8 and 9 one round as follows.

The elastic body 14 from the first drum 6 is first stretched over the minimum diameter portion 8a of the drum ε3, and after the winding angle is bent bI, the elastic body 14 is passed to the minimum diameter portion 9a of the drum 9. ing.

Then, from the minimum diameter part 9a, it is again spanned over the intermediate diameter part 8b of the tram 8, and then the intermediate diameter part 9b of the tram 9,
It is passed from the maximum diameter part 8C of the drum 8 to the maximum diameter part 9c of the drum 9, and finally from the maximum diameter part 9c of the drum 9 to the second tram 7, and the winding starts. It is being

In this way, the elastic body 14 is stretched across the drums 8 and 9 like a sash. Here, each stepped drum 8.
The size relationship of each diameter portion of 9 is as follows. 1st
The diameter of drum 6, the minimum diameter of drum 8, the minimum diameter of tram 9, the intermediate diameter of drum 8, the intermediate diameter of tram 9, the maximum diameter of drum 8, the maximum diameter of drum 9, the diameter of second drum 7, It is.

In addition, in order to prevent the elastic body 14 from coming off from each diameter part of the third drum 8.9, each diameter part may be provided with a V-groove (pulley shape) or a horizontal path with a crowning. is desirable.

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

When the elastic body 14 wound around the first drum 6 is transferred to the second drum 7, the elastic body 14 is sequentially stretched and strained due to the difference in diameter of each drum, that is, the difference in the amount of rotation of the outer circumference. It is wound around the second drum 7 in a state in which energy is applied, and energy is accumulated. The elastic body 14 extends from the first drum 6 to the smallest diameter portion 8 of the drum 8.
a, minimum diameter portion 9a of drum 9, intermediate diameter portion 8b of drum 8
, intermediate diameter portion 9b of drum 9, maximum diameter portion 8C of drum 8,
It is sequentially stretched from the maximum diameter portion 9G of the drum 9 to the second drum 7 according to the difference in diameter, and the number of stages of stretching increases, so that the energy storage efficiency is increased. During the winding process of the elastic body 14, the tension also applies force to the third drum 8.9 in the direction of winding and along the axis 3.4, so that the tram 8.9 is naturally displaced along axis 3.4 with the transition of .

Moreover, when releasing energy, the elastic body 14 is transferred from the second drum 7 to the first drum 6 via the third tram 9.8 in the reverse order to the above, and the The energy that was being held is released.

In such an energy storage device, the efficiency increases when there are a large number of third drums as intermediate drums, as shown in the previous example (e). A stage having a diameter of (=J drum),
By sequentially applying the RP material to each diameter part, it is possible to obtain the same function as if the same number of drums (six drums) were provided for each diameter part.

However, in reality, since there are only two drums of the tram 8.9, the overall size of the 4-way station is much smaller than if a large number of drums were simply arranged.

Second example Next, FIG. 2 shows a second embodiment of the present invention.

The figure is a schematic side view showing the arrangement of each drum and the state in which the elastic bodies are stretched, that is, a pair of third drums 23 and 24 provided between the first drum 21 and the second drum 22.
are arranged in a direction perpendicular to the line connecting the first drum 21 and the second drum 22, and elastic bodies 25 are alternately stretched between the drums 23 and 24 in a sash-like manner. Each of the drums 23 and 24 is constituted by a stepped drum having a plurality of layered diameter parts, as shown in FIG. 1, and the amount of rotation of the outer circumference of the drum increases in proportion to the size of the diameter part. .

With this arrangement, it becomes possible to bring the first drum 21 and the second drum 22 closer to each other, making it possible to further reduce the size of the apparatus.

Other configurations and operations are similar to those of the first embodiment.

Third embodiment Next, FIG. 3 shows a third embodiment of the present invention.

In this embodiment as well, a third drum 33, 34 consisting of at least two stepped drums is arranged between the first drum 31 and the second drum 32. A screw shaft 35, which has a connection configuration similar to the conventional connection and rotates with the rotation of each drum, is arranged parallel to each drum. In this embodiment, the screw shaft 35 is rotated by meshing with a gear 36 provided on the shaft q-: of the drum 33 and a gear 37 provided on the shaft end of the screw shaft 35. A nut 38 is screwed into the frame 39, which is integrally fixed to the put 38 and can move along the screw shaft 35 together with the nut 38. It extends to both sides and is supported via an axle 40 for each drum 33, 34 via an angular contact bearing 42, respectively.

Since each bearing 42 supports each drum 33, 34 from the side in the thrust direction, the frame body 39
and each drum 33, 34 are adapted to move integrally in the axial direction.

In such a configuration, the screw shaft 35 is also rotated as each drum rotates when energy is stored or released, and the frame 39 is thereby moved in the axial direction via the nut 38. The helical direction of the screw shaft 35 is set so that the movement of the frame 39 is in the direction of movement of the elastic body 43, and the gears 36, 37 are set so that the movement speed matches the movement speed of the elastic body 43. Number of teeth, screws! 11135 is adapted, each drum 33, 34 is forced to move via the bearing 42 by the movement of the frame 39, without the need for tension in the elastic body 43. Therefore, the moving speed of the drums 33, 34 does not vary depending on the tension state of the elastic body 43, and the drums 33, 34 are always moved at the target moving speed. As a result, the winding of the elastic body 43 around the first drum 31 and the second drum 32 is not disturbed, and the elastic body 43 is neatly wound at a predetermined pitch. Further, since no large load is applied to the IIIi 140.41 of the drum 33.34, the shaft diameter can be made smaller.

Other configurations and operations are similar to those of the first embodiment.

In each of the above embodiments, the case where there are two third drums has been described, but as described above, the number of third drums may be more than that, and the number of stages of the stepped drums may be further increased. Good too. In addition, the amount of rotation of the outer periphery of each drum was changed by changing the diameters of the first, second, and third drums in order, but it was decided to make each drum diameter the same and change the gear ratio of the drive system, for example. It is also possible to change the rotation speed ratio and thereby change the amount of rotation on the outer periphery.

[Effects of the Invention] As explained above, the sharpening using the energy storage device of the present invention includes at least two third drums as intermediate drums, and these are stepped drums having a plurality of diameter portions. , it is possible to obtain the same function as a large number of drums with a small number of intermediate drums, and it is possible to achieve the effect that the entire device can be configured compactly while improving energy storage efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view of an energy storage device according to a first embodiment of the present invention, FIG. 2 is a schematic side view of an energy storage device according to a second embodiment of the present invention, and FIG. FIG. 3 is a schematic plan view of an energy storage device according to a third embodiment of the present invention. 1......Support 2.3.4.5, /IO,41...Axle 6.21.31
...First drum 7.22.32...Second drum 8.9.23.24.33.34...Third drum 1
0, 11.12.13...Gear 14.25.43...Elastic body 35...Screw shaft 36.37...Gear

Claims (1)

[Claims] (1) A plurality of drums arranged parallel to each other and mechanically connected in order to enable torque transmission; the first drum has a smaller outer circumferential rotation amount and the outer circumferential rotation is related in size to the outer circumferential rotation amount during rotation. a second drum having a large amount of rotation, and a third drum disposed between these drums and movable in the axial direction and having an outer circumferential rotation amount intermediate between the outer circumferential rotation amount of the first drum and the second drum. an energy storage device including a string-like elastic body that can store strain energy between the first, third, and second drums; comprising at least two drums parallel to each other, and the at least two drums being configured as stepped drums having a plurality of diameter parts, the plurality of diameter parts being arranged in order from the small diameter part side to the large diameter part side. Then, the elastic body from the first drum is stretched over the minimum diameter part of the - drum of the third drum, and from there to the minimum diameter part of the other drum of the third drum, and the like. from the drum again to the next diameter part of the drum -,
Energy storage characterized in that the energy is sequentially passed between a plurality of third drums in the same order as above, moving from the small diameter part side to the large diameter part side, and finally passed to the second drum. Device.