JP3224985B2 - Rotating body for electro-sensitive working medium and driving method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To convert directly and efficiently an electric energy into the motional energy of an electrically sensitive work medium, by disposing in a rotatable way a rotor in a hermetic housing comprising a bottomed medium storing portion and a cap, and by providing first and second electrodes on the surface of the rotor in an up-and-down direction. SOLUTION: Forming a cylindrical hermetic housing out of a cap 44 and a medium storing portion 41, a rotary rotor 46 is disposed together with a rotary shaft 45 in the medium storing portion 41 to provide first and second electrodes 43, 42 on the surface of the cylindrically formed rotor 46. Further, filling an electrically sensitive working medium 21 into the medium storing portion 41, the application of a DC voltage is performed between the first and second electrodes 43, 42 via external terminals 53, 52 to rotate the rotor 46 accompanied by the flowing of the electrically sensitive work medium 21. Thereby, utilizing the flow of the electrically sensitive work medium 21, an electric energy can be converted efficiently into a rotary energy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating body (rotor electrode type electro-sensitive working medium motor) rotated by a liquid moving between electric fields and a method of driving the rotor electrode type electro-sensitive working medium motor.

[0002]

BACKGROUND OF THE INVENTION It is known that when an electric field is applied to an insulating liquid, the characteristics of the liquid vary depending on the type of the liquid. For example, a liquid crystal applies a voltage to a liquid crystal compound in a liquid crystal layer that is intermediate between a solid layer and a liquid layer,
A visible image or the like is formed by controlling the orientation of the liquid crystal compound and the like to adjust the light transmittance. However, even when an electric field is formed in the liquid crystal compound, the liquid crystal compound regulated by the alignment plate is not released from such regulation and does not flow freely.

[0003] In addition, there is also known a liquid which exhibits an effect (an electrorheological effect or a Winslow effect) that characteristics such as viscosity of the liquid are changed by applying a voltage. However, the electrorheological effect or the Winslow effect is a heterogeneous system in which silica gel, cellulose, kazain, a polystyrene-based ion exchange resin, etc. are blended with insulating oil, and these blended components (solids) are dispersed. Due to its low stability during storage.

Further, lubricants having an electrorheological effect have been proposed as lubricating oils for automobiles and the like, but these lubricants are actually heterogeneous and have a problem in stability during storage and the like.

Further, JP-A-6-57274 and JP-A-6-73390 disclose an invention of an electrosensitive composition in which a specific fluorine compound is blended with an insulating oil.

[0006] However, the compositions described in these publications are both mixtures of insulating oil and a specific fluorine compound. As a worldwide trend, the use of fluorine compounds has been shunned.

[0007] If a liquid sensitive to the application of a DC voltage is used and the movement of the liquid caused by the response can be taken out as kinetic energy, electrical energy can be directly converted to kinetic energy. However, it is difficult to accurately grasp the behavior of the liquid by applying a DC voltage, and it is necessary to review the mechanism of the rotating body in order to achieve high energy conversion efficiency.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotating body which rotates an electro-sensitive working medium by applying a DC voltage to flow the electro-sensitive working medium.

Another object of the present invention is to provide a method for driving a rotating body as described above. further,
An object of the present invention is to provide a rotating body which is a device capable of applying electric energy and converting the electric energy into kinetic energy, that is, rotational energy, and a method of driving the rotating body.

[0010]

SUMMARY OF THE INVENTION A rotating body for an electro-sensitive working medium according to the present invention comprises:
A bottomed medium storage portion for storing the electro-sensitive operating medium, a lid fitted to the upper release portion of the medium storage portion to seal the medium storage portion, and a shaft provided at the center of the lid body A rotor rotatable in the medium housing around an axis of rotation supported by the hole and the bearing at the center of the bottom of the medium housing; and an external electrode terminal electrically connected to the rotor via the rotation shaft at the top of the rotor. A plurality of first electrodes that are connected to each other and are vertically arranged on the surface of the rotor, and are electrically connected to an external electrode terminal via a rotation shaft below the rotor, and are not in contact with the first electrodes. And a second electrode extending in the vertical direction on the surface of the rotor in the state.

Further, according to the present invention, there is provided a method for driving a rotating body for an electro-sensitive operating medium, wherein the medium-receiving section having a bottom for housing the electro-sensitive operating medium and a medium which is fitted to an upper release portion of the medium storing section. A lid that seals the storage portion, and is rotatable in the medium storage portion around a rotation axis supported by a shaft hole provided in the center of the lid and a bearing portion at the bottom center of the medium storage portion. A rotor, first electrodes electrically connected to a first external terminal via a rotation shaft at an upper portion of the rotor, and a plurality of first electrodes vertically arranged on a surface of the rotor; and a rotation shaft at a lower portion of the rotor. A second electrode electrically connected to a second external terminal through the second electrode and having a second electrode vertically extended on a surface of the rotor in a non-contact state with the first electrode. A DC voltage is applied between the first electrode and the second electrode of the body, and the voltage in the medium container is changed. By flowing a sensitive working medium, it is characterized by rotating the rotor with electrodes.

Generally, it is not considered that even if a DC voltage is applied to an insulating fluid, the applied voltage acts on the insulating fluid to cause fluid movement or the like. However, the present inventor has confirmed that when a DC voltage is applied to a part of a group of fluids known as an insulating medium or certain organic compounds, the fluid flows. If the kinetic energy of the flowing fluid can be extracted in this manner, the electric energy can be used as the kinetic energy without using any mechanical element. The rotating body for an electro-sensitive working medium of the present invention is a device that is particularly suitable for converting the flow energy of the electro-sensitive working medium into a rotational force and extracting it when a DC voltage is applied. That is, since the rotating body for the electro-sensitive working medium of the present invention is provided with the electrode on the rotating shaft itself, it is possible to obtain high rotational speed, output torque and energy efficiency.

Thus, according to the present invention, it is possible to efficiently convert electrical energy directly into kinetic energy of an electro-sensitive working medium without using a special device for energy conversion such as a pump. it can.

[0014]

DETAILED DESCRIPTION OF THE INVENTION Next, the rotating body for the electro-sensitive working medium of the present invention and the method of driving the rotating body will be described in detail.

FIG. 1 is a perspective view schematically showing a rotating body for an electro-sensitive working medium of the present invention, and FIG. 2 shows an arrangement state of a second electrode in the rotating body for an electro-sensitive working medium. 2 is a view of the rotating body of FIG. 1 as viewed from above.

The rotating body 40 for the electro-sensitive working medium of the present invention.
Has a bottomed medium accommodating section 41 for accommodating the electro-sensitive operating medium 21, and a lid 44 that fits into the upper opening of the medium accommodating section 41 and seals the medium accommodating section 41. By fitting the lid 44 into the opening at the upper part of the medium accommodating portion 41, a housing sealed by the lid 44 and the medium accommodating portion 41 is formed.

The medium accommodating portion 41 which forms this housing has a bottomed shape, and is usually made of a synthetic resin (eg, Teflon, polycarbonate, acrylic, etc.) which does not corrode the filled electrosensitive working medium, ceramics, wood, metal, or the like. , Glass and the like. Further, the medium accommodating portion 41 can be formed of a conductive material such as a metal such as stainless steel. However, if the insulating property between the electrodes is impaired, an insulating process is performed or an insulating material is used. Preferably, it is formed.

A bearing 48 is provided at the center of the bottom 49 of the medium container 41. The bearing 48 supports the lower end of the rotating shaft 45, and has a rotating contact 60 for electrically connecting the second external terminal 52 and the second electrode 42. A conductor is led from the rotary contact 60 along the inner peripheral wall of the medium accommodating portion 41, and the conductor led out of the housing forms a second external terminal 52.
In addition, a bearing mechanism or the like can be incorporated in the bearing 48 for supporting the lower end of the rotating shaft of the rotary contact 60 in order to reduce the coefficient of friction with the rotating shaft 45.

The upper portion of the medium container 41 is opened to fill the electro-sensitive working medium 21. Lid 44
Forms a hermetically sealed housing by filling the medium containing portion 41 with the electro-sensitive working medium 21 and then fitting the medium into the opened upper portion of the medium containing portion 41. This lid 4
4 can be formed of the same material as that of the medium storage section 41.

The cover 44 further has a shaft hole 47 at the center thereof, through which the rotary shaft 45 penetrates. This shaft hole 4
7 is provided with a rotary contact 50 that supplies electricity to the second electrode 43 via the rotary shaft 45. Rotating shaft 4
In order to reduce the coefficient of friction between the shaft 5 and the shaft hole 47, a bearing mechanism or the like can be incorporated. This rotary contact 50
And the first conductive terminal 53 is formed to form the first external terminal 53.
In these rotary contacts 50, 60, mercury can be used as a conductor.

In FIG. 1, the lid 44 is formed so as to fit into the medium storage portion 41. However, the medium storage portion 41 and the cover 44
May be screwed together, and the sealing property can be further improved by interposing a packing or the like between the medium storage portion 41 and the lid 44.

The rotating shaft 45 is divided into an upper portion and a lower portion by a rotor 46 provided in the medium accommodating portion 41, and the upper rotating shaft 45a and the lower rotating shaft 45b are electrically insulated. The upper rotation shaft 45a is rotatably supported by passing through a shaft hole 47 provided in the lid 44, while the lower end of the lower rotation shaft 45b is
4 is rotatably supported by a bearing 48 provided at the center of the bottom 49. This upper rotating shaft 45
A rotor 46 that rotates together with the rotating shaft 45 inside the medium accommodating portion 44 is disposed between the rotating shaft 45 and the lower rotating shaft 45b. The rotor 46 has a cylindrical shape with the rotation shaft 45 as the center axis of rotation, and is arranged with a gap formed so as not to contact the inner peripheral wall surface of the medium storage portion 41.
The ratio of the inner diameter of the medium accommodating portion 41 to the diameter of the rotor 46 (the inner diameter of the medium accommodating portion 41 / the diameter of the rotor 46) is usually 1.01 or more, and particularly 1.05 to 10.0. It is preferably within the range. Further, for example, by setting the inner diameter of the medium storage section 41 to 30 mm or less and setting the ratio of the inner diameter of the medium storage section 41 / the diameter of the rotor 46 to a range of 1.5 to 3.0, the rotating body of the present invention is manufactured. By reducing the size, the rotational torque at the same rotational speed increases. Thus, the rotating body of the present invention has the characteristic that its performance is further improved by reducing the size.

The rotor 46 is not limited to a cylindrical shape, but may be of a rectangular parallelepiped shape, one having a large number of projections on its surface, or a star-shaped cross section, depending on the intended use. The rotor 46 can also be hollow, and when it is hollow, the hollow can be filled with vacuum, air, gas, liquid, solid, or the like, and its weight can be variously adjusted. By adjusting the weight of the rotor 46, the specific gravity of the rotor 46 in the electro-sensitive working medium can be adjusted, and the mobility and balance of the rotor 46 can be adjusted.

A first electrode 43 and a second electrode 42 are formed on the surface of the cylindrical rotor 46 as described above. The first electrode 43 is connected to an external terminal 53 by a rotary contact 50 via an upper rotary shaft 45a. The second electrode 42 is connected to an external terminal 52 by a rotary contact 60 via a lower rotary shaft 45b. Note that the first electrode 43 and the second electrode 42 are electrically insulated.

The first electrode 43 and the second electrode 42
It can be formed by extending a conductor on the cylindrical surface of the rotor 46. The arrangement positions of the first electrode 43 and the second electrode 42 can be set as appropriate. FIG. 2 is a layout view of the electrodes when the rotor 46 is viewed from above and from the side. The angle θ between the electrodes formed by the first electrode 43 and the second electrode 42 is usually set to 1.0 ° to 180 °, preferably 3.0 ° to 90.0 °, and the first electrode 43 is set. And the second electrode 4
2 is installed. Since the inter-electrode angle θ varies depending on the number of electrodes to be stretched, in order to set the inter-electrode angle θ to the value described above, the first electrode 43 and the second electrode 42 Each can be stretched from 1 to 60. In FIG. 2, reference numeral 46 denotes a rotor, and 53a denotes a lead derived from the first electrode 43, which is incorporated in the upper rotary shaft 45a or which is connected to the upper rotary shaft 45a itself by using a conductor. The rotation shaft 45a can also be integrated.

Reference numeral 52a denotes a lead derived from the second electrode 42, which is incorporated in the lower rotary shaft 45b, or which is integrated with the lower rotary shaft 45b using a conductor. It can also be converted.

The medium storage section 44 having the above-described configuration.
Is filled with an electro-sensitive working medium 21. The electro-sensitive working medium 21 is a liquid that exhibits substantially insulating properties, but is a liquid that flows in response to the applied DC voltage when a DC voltage is applied.

As the electro-sensitive working medium 21, the following compounds can be used alone or in combination. The electro-sensitive working medium used in the present invention is shown below.

[0029]

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However, in the above formula [I] or [II], R ¹ and R ² are basically hydrocarbon groups having usually 1 to 15, preferably 1 to 9 carbon atoms. .
However, in the present invention, R ¹ and R ² may each independently be a hydrocarbon group containing atoms other than carbon and hydrogen. That is, it may have, for example, an ether bond or an ester bond. Further, R ¹ and R ² may be the same or different.

In the formula [I] or [II], X is a divalent group represented by the following formula [A] or [B];

[0032]

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However, in the above formula [A], R ³ and R ⁴ are basically a hydrocarbon group having usually 1 to 5, preferably 1 to 2 carbon atoms or a single bond (q or r is 0). However, the hydrocarbon group may have a branch, and the hydrocarbon group may have an atom other than carbon or hydrogen bonded thereto. Further, R ³ and R ⁴
May be the same or different.

Further, in the above formula [A], q and r are each independently 0 or an integer of 1 or more.
When q or r is 0, R ³ or R ⁴ independently represents a single bond.

In the above formula [A], p is 0 or an integer of 1, 2, or 3. And this p
In the cyclic structure defined by, a hydrogen atom may be substituted by another group, and a part or all of the cyclic structure may be hydrogenated.

[0036]

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However, in the above [B], n represents an integer of 2 or more, and m represents the number of double bonds contained in this group. That is, the group represented by the formula [B] may have a double bond.

Examples of the electro-sensitive working medium which is the compound represented by the formula [I] or [II] include the following compounds.

[0039]

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[0040]

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[0041]

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Among the above compounds, dibutyl itaconate, methyl acetyl ricinoleate, bis (2-ethylhexyl) fumarate, dibutyl adipate, bis (2-ethylhexyl) adipate, bis (2-ethylhexyl azelate) ), Dibutylbenzyl phthalate and dibutyl decandioate are preferred. That is, the compounds described above are particularly excellent in fluid mobility when the applied voltage is constant.

Further, as the electro-sensitive working medium used in the present invention, a molecular terminal group composed of a terminal alkyl group in which a hydrogen atom is bonded to a carbon atom at both terminals and the terminal is inactivated, Can be used at the both ends. In this electro-sensitive working medium, a bond of each carbon atom constituting a terminal group having a carbon atom whose terminal is sealed,
It is bonded to at least one hetero atom, and may have a straight-chain divalent hydrocarbon or hetero atom through the hetero atom, which may have a hetero atom and may have a branch. It is a substantially insulating liquid compound having a chain or a branch by bonding to a divalent hydrocarbon which may be present and may have a branch.

Such an electro-sensitive working medium is composed of a compound as described above. Specifically, the electro-sensitive working medium has the formula [III], [IV]
Or it can be represented by [V].

[0045]

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However, in the above formula [III], X ¹ is
It is a divalent group having 1 to 14 carbon atoms. The divalent group may be a straight-chain group or a group having a branch, and X ¹ is a hydrocarbon group formed simply from a carbon atom and a hydrogen atom. Alternatively, the divalent group may be a group having a hetero atom such as an oxygen atom, a nitrogen atom, or a sulfur atom other than a carbon atom and a hydrogen atom. Among such divalent groups, examples of the group having an oxygen atom include a group having an ether bond and a group having an ester bond.

Among the divalent groups having 1 to 14 carbon atoms, examples of the linear group include the following groups. _{-CH 2 -, - CH 2 CH} 2 -, - CH 2
CH ₂ CH ₂ — and —CH ₂ CH ₂ CH ₂ CH ₂ — and —
(CH _{2) n} - (n is an integer of 5-14).

The branched hydrocarbon group is usually a divalent group having 3 to 14 carbon atoms, preferably 4 to 14 carbon atoms, and specific examples include the following groups. Can be.

[0049]

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When X ¹ in the formula [III] is a divalent group having an oxygen atom, examples of the divalent group having an ether bond include the groups described below.

[0051]

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Further, in the formula [III], when X ¹ is a divalent group having an oxygen atom, examples of the divalent group having an ester bond include the groups described below.

[0053]

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In the above formula [III], Y ¹ and Z ¹ are an alkyl group having 1 to 5 carbon atoms, and specific examples include a methyl group, an ethyl group, an n-propyl group and an iso-propyl group. Group, n-butyl group, iso-butyl group, tert-butyl group, n
-Pentyl and iso-pentyl. As described above, in the formula [III], Y ¹ and Z
¹ may be a linear alkyl group or a branched alkyl group. In the formula [III], Y ¹ and Z ¹ may be the same or different.

Among the compounds of the formula [III] in which X ¹ , Y ¹ and Z ¹ are groups as described above, examples of compounds suitable as an electro-sensitive working medium are shown below.

[0056]

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Next, the compound represented by the formula [IV] constituting the electro-sensitive working medium of the present invention will be described. In the present invention, a compound represented by the following formula [IV] can be used as the electro-sensitive working medium.

[0058]

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However, in the above formula [IV], X ² is
It is a divalent hydrocarbon group having 2 to 9 carbon atoms, preferably 2 to 5 carbon atoms, which may have a branch. Also, Y ²

[0060]

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C1-C6 which may have a branch such as
Z ² is a divalent alkyl group of

[0062]

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C1 to C6 which may have a branch such as
Is an alkyl group. In the formula [IV], n is an integer of 1 to 3, preferably 1 or 2.

M is an integer of 1 or 2; when m is 1, A is a hydrogen atom; and when m is 2, A is a bond and the group (Z ² -O − (X ² −O) _n −
CO—Y ² ) — is a symmetric dimer directly bonded.

Specifically, examples of the compound represented by the formula [IV] include the following compounds.

[0066]

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[0067]

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The compound represented by the formula [V] used as the electro-sensitive working medium in the present invention will be described. This compound is represented by the following formula [V].

[0069]

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In the above formula [V], X ³ is a monovalent group having a carbon atom, b oxygen atom, and (2a + 1-2b) hydrogen atoms; Preferably, it is a monovalent group having 1 to 17 carbon atoms which may have one oxygen atom as an epoxy group or a carbonyl group, and Y ³ is a branched chain and / or a carbon = carbon double bond. And may be a hydrocarbon group having 1 to 14 carbon atoms, and preferably a hydrocarbon group having 2 to 10 carbon atoms.

Here, a represents an integer of 1 to 25, b represents 0, 1, 2 or 3, and 2a + 1
> 2b. Specific examples of the compound represented by the formula [V] include the compounds described below.

[0072]

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[0073]

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In the present invention, a compound represented by the following formula [VI] can be used as the electro-sensitive working medium.

[0075]

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However, in the above formula [VI],

[0077]

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Represents an alkyl group having 1 to 5 carbon atoms which may have a branch and contains any of the above. In particular, in the present invention, Z ⁴ is

[0079]

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Preferably, the group is represented by X ⁴ represents a hydrocarbon having 1 to 17 carbon atoms which may have a branch, preferably an alkyl group having 1 to 9; and Y ⁴ has a hetero atom and / or an unsaturated bond. You may. The alkyl group may have a branch.

Specific examples of X ⁴ include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group,
iso-butyl group, t-butyl group, n-pentyl group, iso-pentyl group, n-hexyl group, iso-hexyl group, n-heptane group,
Examples thereof include an iso-heptane group, an n-octyl group, an iso-octyl group, and a 2-ethylhexyl group.

The hydrocarbon group X ⁴ in the formula [VI] is
It may have a hetero atom. For example, a hetero atom-containing group such as an ether bond such as C—O—C may be used.

[0083] However, in the above-mentioned formula [VI], Z ⁴ of X ⁴
No heteroatom is located at the end of the group that binds to. In the above formula [VI], Y ⁴ represents a hydrocarbon having 1 to 20 carbon atoms which may have a branch.
⁴ may have a heteroatom and / or an unsaturated bond.

Specific examples of Y ⁴ include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group,
iso-butyl group, t-butyl group, n-pentyl group, iso-pentyl group, n-hexyl group, iso-hexyl group, n-heptane group,
Examples thereof include an iso-heptane group, an n-octyl group, an iso-octyl group, and a 2-ethylhexyl group.

The hydrocarbon group Y ⁴ in the formula [VI] is
It may have a hetero atom. For example, a hetero atom-containing group such as an ether bond such as C—O—C may be used.

Among the compounds represented by the formula [VI], a compound particularly preferred as an electro-sensitive working medium has a structure represented by the following formula [VI-a].

[0087]

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However, in the above formula [VI-a], X ⁴ is
It has the same meaning as the preferred embodiment of X ⁴ in the above formula [VI], and specifically has 1 to 9 carbon atoms which may have a branch.
Represents an alkyl group. Similarly, for Y ⁴ , the above formula [V
Has the same meaning as in the preferred embodiment X ¹ in I], in particular represent an also an alkyl group having 1 to 10 carbon atoms having a branch.

Among the compounds represented by the formula [VI] in the present invention, preferred compounds are methyl pyruvate, ethyl ethyl pyruvate, butyl pyruvate, 2-ethylhexyl pyruvate,
α-keto acid esters, α-keto caproic acid 2-ethylhexyl ester, α-keto caprylic acid ethyl ester and the like can be mentioned. In the present invention, pyruvic acid ethyl ester is particularly preferred, and the pyruvic acid ethyl ester can be represented by the following formula.

[0090]

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The above-described electro-sensitive working medium can be used alone or in combination. The compounds represented by the formulas [I] to [VI] as described above can also be synthesized by combining known synthesis methods. Some of the compounds having such a structure are commercially available. In the present invention, when the compound having the structure of the formulas [I] to [VI] is used as the electro-sensitive working medium, the compound produced by the known synthesis method as described above can be used, and the compound is commercially available. Even the compound described above can be used as an electro-sensitive working medium. In these cases, the compounds represented by the formulas [I] to [VI] can be used after being purified if necessary.

Further, in the electro-sensitive working medium used in the present invention, a small amount of a hydrocarbon compound having 5 to 10 carbon atoms can be blended with the compounds represented by the above [I] to [VI]. When a mixture containing a small amount of a hydrocarbon compound having 5 to 10 carbon atoms is used as the electro-sensitive working medium, the electro-sensitivity of the electro-sensitive working medium is improved.

Examples of such hydrocarbon compounds having 5 to 10 carbon atoms include petroleum benzine, ligroin, hexane, pentane, cyclopentane, cyclohexane, benzene and the like. Alternatively, it is preferable to use them in combination.

Here, petroleum benzine is described in JIS-K-85
It is a hydrocarbon fraction having 5 to 8 carbon atoms and having a distillation temperature of 50 to 80 ° C, which is specified in 94. Moreover, ligroin is specified in JIS-K-8937 and has a distillation temperature of 80 to 1.
It is a hydrocarbon fraction having 5 to 9 carbon atoms at 10 ° C.

The above-mentioned hydrocarbon compound having 5 to 10 carbon atoms is usually added to the electro-sensitive working medium in an amount of 0.1 to 20% by weight, preferably 1 to 10% by weight. The total of the compounding ratio of the hydrocarbon compound having 5 to 10 carbon atoms and the compound represented by the formulas [I] to [VI] is 100% by weight.

However, since the electro-sensitive working medium has a low specific gravity or a medium showing an increase in current value by mixing, the mixing ratio is adjusted according to the purpose of use. In addition, in addition to the above-mentioned formulas [I] to [VI] and optionally a hydrocarbon compound having 5 to 10 carbon atoms, a metal powder or the like may be used as long as the properties of the electro-sensitive working medium used in the present invention are not impaired. Other substances, a substance for ensuring the stability of the electro-sensitive working medium, a coloring agent such as a dye or a pigment added for the purpose of coloring, a viscosity modifier for adjusting the viscosity, and the like can be added. Further, a preservative, a fungicide, a solvent and the like can be added.

The above-described electro-sensitive working medium 21 is placed in the medium accommodating section 41 in which the rotor 46 is disposed. The lid 44 is fitted into the upper part of the medium storage part 41 to form a housing sealed by the medium storage part 41 and the lid.

Next, the positive terminal and the negative terminal of the DC power supply are connected to the external terminal 52 and the external terminal 5 so that a DC voltage can be applied between the first electrode 43 and the second electrode 42.
Connect to 3. The DC voltage applied between the first electrode 43 and the second electrode 42 varies depending on the size of the rotating body 40 and the type of the electro-sensitive working medium 21 of the present invention.
Usually, it is 0.5 to 10 KV, preferably 2 to 7 KV. In this case, one of the first electrode 43 and the second electrode 42 is a positive electrode and the other is a negative electrode.
Either may be a positive electrode. By applying the DC voltage in this manner, the movement of the electro-sensitive working medium starts to flow, and the rotor 46 starts rotating with the flow of the electro-sensitive working medium 21. The current flowing when a DC voltage is applied in this way is extremely small, since the electro-sensitive working medium used in the present invention is not substantially conductive, and the current flowing through the electro-sensitive working medium of the present invention is 0.0.
5 mA or less, and often 20 μA or less.

When a DC voltage is applied as described above,
The rotor normally rotates at a speed of about 2 rad / sec to 50 rad / sec, and the number of revolutions fluctuates according to the applied voltage. Therefore, when the applied voltage is kept constant, the rotation of the rotor is stabilized at a constant speed.

The output torque accompanying such rotation is 200
It may reach μN · m. Further, the rotating body of the present invention has a high energy conversion efficiency, and can convert 0.01% or more, preferably 0.1 to 30%, of the added electric energy to rotational energy.

The rotating body for the electro-sensitive working medium of the present invention utilizes the flow of the electro-sensitive working medium between the electrodes to which the DC voltage is applied as described above, and converts this electric energy into rotational energy. It can be used in the same manner as a conventional motor or actuator.

In particular, the rotating body for the electro-sensitive working medium of the present invention rotates at a higher rotation speed by reducing the size, and the output torque is less reduced even by reducing the size. Therefore, the rotating body for the electro-sensitive working medium of the present invention has high utility as a small motor or a small actuator.

Also, in addition to the rotating mechanism that lays electrodes on the rotor and rotates independently, a small piece of laying electrodes is floated in an electro-sensitive working medium, and a DC voltage is supplied to the electrodes from the outside.
By adjusting, it is possible to produce a fish-like small piece that freely swims around the medium by using the medium flow generated between the electrodes as a driving force.

[0104] Further, by floating a small piece on a boat on the medium and laying an electrode on the bottom of the small piece, a small piece on a boat that freely runs on the medium using the flow generated by the application of a DC voltage as a driving force can be produced. it can.

Instead of applying a DC voltage from an external power supply, it is also possible to use a solar cell panel or a PLZT element which is a photo-piezoelectric element and generates a high voltage by light irradiation. In this case, by laying the solar cell panel or the element together with the electrode in the driving part and irradiating light instead of supplying voltage from the outside, the panel or the element part converts it to DC voltage and supplies it to the electrode. This eliminates the need for wires from an external power supply. As a result, a large degree of freedom is given to the movement of the fish-like small pieces and the boat-like small pieces, and the movement of the fish-like small pieces and the boat-like small pieces sealed in the transparent container can be freely controlled.

This is useful and useful for an internal working device or the like in a nuclear power plant where humans cannot enter, by operating the light irradiation through the protective glass to be able to drive and control.

[0107]

The rotating body for the electro-sensitive working medium of the present invention is
It is composed of a housing, a rotor pivotally supported by the housing, an electrode provided on the rotor, and an electro-sensitive operating medium. By applying a DC voltage between the electrodes, the motor can be rotated at high speed and in a stable manner. . In addition, since the rotation speed is variable depending on the applied voltage, the rotation speed can be easily controlled.

Moreover, the rotating body for the electro-sensitive working medium of the present invention has a simple structure and is suitable for miniaturization. In addition, since the rotating speed is increased by miniaturization, it is also suitable for miniaturization. .

In particular, according to the rotating body for an electro-sensitive working medium of the present invention, electric energy can be directly converted into rotational energy via the electro-sensitive working medium.

[0110]

EXAMPLES Next, the present invention will be described in more detail with reference to examples and the like, but the present invention should not be construed as being limited to these examples.

[0111]

Embodiment 1 The electrode 53 of the rotor electrode type electric working medium motor shown in FIG. 1 was used as a positive electrode and the electrode 52 was used as a negative electrode. Electric power was supplied to the rotor electrode laid on the rotor through a rotary contact using mercury. FIG. 2 shows the relationship between the electrodes and the voltage polarity. In addition, a ball bearing is adopted for a bearing portion provided at the center of the bottom of the medium storage portion to reduce axial friction.

As shown in FIG. 1, a medium having a diameter of 2
A rotor having a height of 0 mm and a height of 50 mm was arranged, and the following electrically insulating media were individually filled until the entire rotor was sufficiently immersed. The length of the electrode laid on the rotor is 50 mm,
The angle θ between the electrodes was set to 22.5 °.

When a DC voltage of 6.0 KV was applied, the rotor started to rotate clockwise, and the rotation continued during the voltage application. When the applied voltage polarity was reversed, the rotor started to rotate counterclockwise. This counterclockwise movement continued.

The rotation speed (radian per second) at this time was measured, and the results are shown in Table 1. In Table 1 shown below, types I to V of the electro-sensitive working medium have a structure represented by the following formula.

[0115]

Embedded image

In the above formula, Z ¹ , X ¹ and Y ¹ have the same meanings as in the above formula [III].

[0117]

Embedded image

In the above formula, Z ² , X ² , Y ² , n, m
Has the same meaning as in formula [IV] above.

[0119]

Embedded image

In the above formula, X ³ and Y ³ have the same meanings as in the above formula [V].

[0121]

Embedded image

In the above formula, R ¹ , R ² and X have the same meaning as in the above formula [I].

[0123]

Embedded image

In the above formula, R ¹ , R ² and X have the same meaning as in the above formula [II].

[0125]

Embedded image

In the above formula, X ⁴ and Y ⁴ have the same meaning as in the above formula [VI].

[0127]

[Table 1]

The current value of the DC current flowing when the rotational speed was measured using the above-described electro-sensitive working medium was 0.05 mA or less, which is the measurement limit of the ammeter used in each case. Could not be measured.

[0129]

Embodiment 2 In order to measure the output torque which is a basic characteristic of the rotating body of the present invention, a measuring device shown in FIG. 3 was prepared.

In FIG. 3, reference numeral 30 denotes a rotating body of the present invention, reference numerals 31 and 31 denote strain gauges, reference numeral 32 denotes a micrometer, reference numeral 33 denotes a micrometer head, and reference numeral 34. Is a rotating shaft, and numbering 35
Is a wire stretched between the left and right beams attached to the strain gauges 31, 31, respectively.
5 is wound once around the rotating shaft 34.

When the rotating shaft 34 rotates, a tension difference is generated between the left and right wires, and the tension difference is measured with a strain gauge to determine the output torque (μN · m). The rotating body 30 used for the measurement has the structure shown in FIG. 1, the inner diameter of the medium containing section is 30 mm, and the height of the rotor is 50 mm.
Thus, three types of rotors (rotor A, rotor B, and rotor C) having diameters of 10 mm, 16 mm, and 20 mm were prepared. The angle between the electrodes was 22.5 °. The rotor C is the same as that used in the first embodiment.

As the electro-sensitive working medium, the dibutyl decanoate used in Example 1 was used, and the electro-sensitive working medium was put into the medium accommodating portion until the entire rotor was sufficiently immersed.
When a DC voltage of 6.0 KV was applied, the rotors A to C each started rotating immediately after the application of the voltage.

The rotation speed, rotation torque and current value at that time were measured. The results are shown in Tables 2 to 4.

[0134]

[Table 2]

[0135]

[Table 3]

[0136]

[Table 4]

As is clear from the above results, a high output torque was obtained when the rotor diameter was large. This is considered to be because the distance between the rotor and the medium housing portion, which is a housing, is reduced, and the flow of the medium generated between the electrodes is efficiently converted into rotational motion by viscous force of the medium.

[0138]

Embodiment 3 Medium storage portions having inner diameters of 20 mm and 40 mm, respectively, were produced. The rotor C having a rotor diameter of 10 mm used in the second embodiment was mounted on the housing having a medium accommodation portion having an inner diameter of 20 mm.
And a rotor C having a rotor diameter of 20 mm used in Example 2 was set in a housing having a medium storage portion having an inner diameter of 40 mm.

The rotation speed, rotation torque, and current value were measured in the same manner as in Example 2 except for the above. Tables 5 and 6 show the results.
It describes in.

[0140]

[Table 5]

[0141]

[Table 6]

As is clear from the above results, the ratio between the housing and the rotor diameter was 2.0, and the result described in Table 3 of Example 2 (the ratio between the housing and the rotor diameter was 1. 9), the smaller the inside diameter of the casing, that is, the smaller the size of the housing, the higher the output torque with respect to the same rotational speed, and the greater the change in the rotational speed with respect to the load torque.

[0143]

Embodiment 4 A housing in which the inner diameter of the medium accommodating portion is 24 mm, and a rotor having the same diameter as the rotor C used in Embodiment 2 and having an inter-electrode angle θ of 11.3 ° and 45.0 °, respectively. Rotor C-
2. Rotor C-3 and rotor C (angle between electrodes θ = 22.5
The rotation speed, rotation torque,
The current value was measured.

The results are shown in Tables 7 to 9.

[0145]

[Table 7]

[0146]

[Table 8]

[0147]

[Table 9]

[0148]

Example 5 In Example 1, dibutyl decane diate was used instead of dibutyl decane diate as the electro-sensitive working medium, and 2.5% by weight of petroleum benzine (Nippon Oil The rotational speed was measured in the same manner except that the mixture was used in a mixture of 20.2 rad / s.
And an increase in the rotation speed was observed. The addition of this petroleum benzyl improved the electrosensitivity of the electrosensitive working medium. The current value is determined by the lower limit of measurement (0.0
5 mA).

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a rotating body for an electro-sensitive working medium of the present invention.

FIG. 2 is a diagram illustrating a positional relationship of electrodes arranged on a rotor.

FIG. 3 is a diagram schematically showing an apparatus used for measuring a rotational torque of a rotating body for an electro-sensitive working medium of the present invention.

[Description of Signs] 21 ・ ・ ・ Electrically Sensitive Working Medium 31 ・ ・ ・ Strain Gauge 32 ・ ・ ・ Micrometer 33 ・ ・ ・ Micrometer Head 34 ・ ・ ・ Rotating Axis 35 ・ ・ ・ Wire 30, 40 ・ ・ ・ Electric Sensitive working medium rotating body 41 ... Medium accommodating part 42 ... Second electrode 43 ... First electrode 44 ... Lid 45 ... Rotating shaft part 46 ... Rotor 47 ...・ Shaft hole 48 ・ ・ ・ Bearing part 49 ・ ・ ・ Bottom part 50,60 ・ ・ ・ Rotary contact 52,53 ・ ・ ・ External terminal

Continuation of front page (56) References JP-A-9-208978 (JP, A) JP-A-9-208977 (JP, A) JP-A-10-88174 (JP, A) Registered utility model 3041928 (JP, U (58) Fields investigated (Int. Cl. ⁷ , DB name) H02N 11/00 C10M 105/32 H02K 57/00

Claims (5)

(57) [Claims] 1. A bottomed medium storage portion for storing an electro-sensitive operating medium, a lid fitted to an upper release portion of the medium storage portion to seal the medium storage portion, and a central portion of the lid body A rotor rotatable around the rotation shaft supported by the shaft hole provided in the medium storage portion and the bearing portion at the bottom center of the medium storage portion, and an external electrode via a rotation shaft above the rotor. A plurality of first electrodes electrically connected to terminals and vertically arranged on the surface of the rotor; and the first electrode electrically connected to an external electrode terminal via a rotating shaft below the rotor. The second is a non-contact state that is vertically extended on the surface of the rotor.
A rotating body for an electro-sensitive working medium, comprising: 2. The method according to claim 1, wherein the first electrode and the second electrode are a plurality of conductive metals extending in the vertical direction on the surface of the columnar rotor, and an angle between the electrodes ranges from 1 ° to 180 °. 2. The rotating body for an electro-sensitive working medium according to claim 1, wherein the rotating body is located within the rotating body. 3. A medium container having a bottom for accommodating an electro-sensitive operating medium, a lid fitted to an upper release portion of the medium container to seal the medium container, and a central portion of the lid. And a rotor rotatable within the medium storage section around a rotation axis supported by a shaft hole provided in the medium storage section and a bearing section at the center of the bottom of the medium storage section, and a first rotation shaft via a rotation shaft above the rotor. A plurality of first electrodes which are electrically connected to an external terminal of the rotor, and which are vertically arranged on the surface of the rotor, and which are electrically connected to a second external terminal via a rotating shaft below the rotor; A first electrode of a rotating body for an electro-sensitive working medium having a second electrode extended vertically on a surface of a rotor in a non-contact state with the first electrode;
A DC voltage is applied between the first electrode and the second electrode to cause the electro-sensitive working medium in the medium accommodating portion to flow, thereby rotating the rotor together with the electrodes. How to drive the body. 4. An electro-sensitive working medium according to the following formulas [I]-[V
A method for driving a rotating body for an electro-sensitive working medium, characterized by containing at least one compound selected from the group of compounds represented by I]; [However, in the above formula [I] or [II], R ¹ and R ² each independently represent a hydrocarbon group which may contain atoms other than carbon and hydrogen, and these may be the same or different. And X is the following formula [A] or [B]
A divalent group represented by the formula: (However, in the above formula [A], R ³ and R ⁴ may be branched and may be a hydrocarbon group to which atoms other than carbon or hydrogen may be bonded, and R ³ and R ⁴ are the same. Or different, and q and r
Is each independently 0 or an integer of 1 or more, and when q or r is 0, R ³ or R ⁴ each independently represents a single bond, and p is 0 or any one of 1, 2, and 3. An integer, and the cyclic structure defined by the p may have a substituent, and part or all of the cyclic structure may be hydrogenated); (However, in the above [B], n represents an integer of 2 or more, and m is the number of double bonds contained in this group); (However, in the above formula [III], X ¹ is a divalent group having 1 to 14 carbon atoms which may have any of a branched chain, an ether bond and an ester bond, and Y ¹ and Z ¹ are
Each of which is independently an alkyl group having 1 to 5 carbon atoms); (However, in the above formula [V], X ² is a divalent alkyl group having 2 to 9 carbon atoms which may have a branch,
² is a divalent alkyl group having 1 to 6 carbon atoms, Z ² is an alkyl group having 1 to 6 carbon atoms which may have a branch,
n is an integer of 1 to 4, and m is an integer of 1 or 2. When m = 1, A is a hydrogen atom, and when m = 2, A is a bond, and a group (Z ² —O— (X ² —O) _n —
CO—Y ² ) — is a symmetric dimer directly bonded to the dimer); (However, in the above formula [VI], X ³ has a carbon atom, b oxygen atom, and hydrogen atom of (2a +
1-2b) monovalent groups, and Y ³ is a hydrocarbon group having 1 to 14 carbon atoms which may have a branched chain and / or a carbon = carbon double bond (where a is 1-2
Represents an integer of 5, and b is any of 0, 1, 2 or 3, and has a relationship of 2a + 1>2b); (However, in the above formula [VI], A branched alkyl group having 1 to 5 carbon atoms which may have a branch, X ⁴ represents a hydrocarbon having 1 to 17 carbon atoms which may have a branch, and Y ⁴ is Represents a hydrocarbon having 1 to 20 carbon atoms which may have a branch, and X ⁴ and Y ⁴ may have a hetero atom and / or an unsaturated bond. )]. 5. An electro-sensitive working medium according to claim 1, wherein
The method according to claim 4, further comprising a small amount of a hydrocarbon compound having 5 to 10 carbon atoms, in addition to the compound represented by the formula (1).