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JP2021064985A - Non-contact power supply device - Google Patents

Non-contact power supply device Download PDF

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Publication number
JP2021064985A
JP2021064985A JP2019186708A JP2019186708A JP2021064985A JP 2021064985 A JP2021064985 A JP 2021064985A JP 2019186708 A JP2019186708 A JP 2019186708A JP 2019186708 A JP2019186708 A JP 2019186708A JP 2021064985 A JP2021064985 A JP 2021064985A
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Prior art keywords
power
receiving side
power receiving
side substrate
feeding device
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広衣 加藤
Hiroi KATO
広衣 加藤
卓司 山田
Takuji Yamada
卓司 山田
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MinebeaMitsumi Inc
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MinebeaMitsumi Inc
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Priority to JP2019186708A priority Critical patent/JP2021064985A/en
Priority to PCT/JP2020/031144 priority patent/WO2021070480A1/en
Priority to TW109134550A priority patent/TW202115988A/en
Publication of JP2021064985A publication Critical patent/JP2021064985A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

To provide a non-contact power supply device which can efficiently supply power.SOLUTION: In a non-contact power supply device 1, an annular power reception side substrate 6 is arranged in a rotor 2, an annular power transmission side substrate 7 is disposed in a fixed body 3 and the power reception side substrate 6 and the power transmission side substrate 7 face each other in a radial direction cd. The power reception side substrate 6 surrounds an outer peripheral surface part 2c of the rotor 2, and the power transmission side substrate 7 surrounds an inner peripheral surface part 3d of the fixed body 3. In another form, the power reception side substrate 6 and the power transmission side substrate 7 respectively include band-shaped conductors 65a and 65b and band-shaped conductors 75a and 75b.SELECTED DRAWING: Figure 2

Description

本発明は、非接触給電装置に関する。 The present invention relates to a non-contact power feeding device.

従来、非接触給電装置として、不動部に設けられた給電コイル部と、回転部に設けられた複数の受電コイル部と、を備え、給電コイル部に供給された電力を非接触で受電コイル部へ供給する磁界結合方式によるワイヤレス電力伝送装置が知られている（特許文献１参照）。 Conventionally, as a non-contact power feeding device, a power feeding coil unit provided in an immovable part and a plurality of power receiving coil parts provided in a rotating part are provided, and the power supplied to the power feeding coil part is non-contactly provided in the power receiving coil part. A wireless power transmission device based on a magnetic field coupling method is known (see Patent Document 1).

特開２０１６−６３６８３号公報Japanese Unexamined Patent Publication No. 2016-63683

上述のようなワイヤレス電力伝送装置では、充電のために給電コイル部と受電コイル部とを位置合わせする必要があり、少しでも位置がずれると、電力供給の効率が低下するという懸念があった。 In the wireless power transmission device as described above, it is necessary to align the power feeding coil portion and the power receiving coil portion for charging, and there is a concern that the efficiency of power supply will be lowered if the positions are displaced even a little.

本発明は、以上の背景に鑑みてなされたものであり、効率良く電力を供給することができる非接触給電装置を提供することを課題の一例とする。 The present invention has been made in view of the above background, and an example of the present invention is to provide a non-contact power feeding device capable of efficiently supplying electric power.

上記課題は、以下の本発明により解決される。即ち、本発明の非接触給電装置の一態様としては、環状の受電側基体と、環状の送電側基体と、を備え、前記受電側基体及び前記送電側基体の一方が、回転体に設けられ、前記受電側基体及び前記送電側基体の他方が、固定体に設けられ、径方向において、前記受電側基体と前記送電側基体とが対向している。 The above problem is solved by the following invention. That is, as one aspect of the non-contact power feeding device of the present invention, an annular power receiving side base and an annular power transmitting side base are provided, and one of the power receiving side base and the power transmitting side base is provided on the rotating body. The other of the power receiving side base and the power transmitting side base is provided on the fixed body, and the power receiving side base and the power transmitting side base face each other in the radial direction.

本発明の非接触給電装置においては、前記受電側基体が前記回転体の外周面を囲んでおり、前記送電側基体が前記固定体の内周面を囲んでいるものとすることができる。
さらに、前記受電側基体及び前記送電側基体は、それぞれ導電体を備えるものとすることができる。 In the non-contact power feeding device of the present invention, the power receiving side base may surround the outer peripheral surface of the rotating body, and the power transmitting side base may surround the inner peripheral surface of the fixed body.
Further, the power receiving side substrate and the power transmitting side substrate may each include a conductor.

前記複数の導電体としては、前記受電側基体が備える導電体と、前記送電側基体が備える導電体と、で少なくとも一対のコンデンサを形成するものとすることができる。
このとき、前記一対のコンデンサを形成する導電体同士の面積が等しいものとすることができる。
また、前記受電側基体が備える導電体と、前記送電側基体が備える導電体が、それぞれ前記回転体の軸方向に複数並んでいるものとすることができる。 As the plurality of conductors, at least a pair of capacitors may be formed by the conductor included in the power receiving side substrate and the conductor included in the power transmission side substrate.
At this time, the areas of the conductors forming the pair of capacitors can be equal to each other.
Further, it is possible that a plurality of conductors included in the power receiving side substrate and a plurality of conductors included in the power transmitting side substrate are arranged in the axial direction of the rotating body.

本発明の非接触給電装置においては、前記受電側基体が備える複数の導電体同士、及び、前記送電側基体が備える複数の導電体同士は、それぞれ面積が等しいものとすることができる。
また、本発明の非接触給電装置においては、前記受電側基体が備える導電体、及び、前記送電側基体が備える導電体が、導電性の薄膜で形成されているものとすることができる。 In the non-contact power feeding device of the present invention, the plurality of conductors included in the power receiving side substrate and the plurality of conductors included in the power transmitting side substrate can have the same area.
Further, in the non-contact power feeding device of the present invention, the conductor included in the power receiving side substrate and the conductor included in the power transmitting side substrate can be formed of a conductive thin film.

さらに、本発明の非接触給電装置においては、前記回転体の外周面と前記受電側基体との間には電子部品が配置されているものとすることができる。
また、本発明の非接触給電装置においては、前記受電側基体及び前記送電側基体は、それぞれ、同軸上に巻回されたコイルを備え、当該コイル同士が、径方向において対向しているものとすることができる。 Further, in the non-contact power feeding device of the present invention, it is possible that an electronic component is arranged between the outer peripheral surface of the rotating body and the power receiving side substrate.
Further, in the non-contact power feeding device of the present invention, the power receiving side base and the power transmitting side base each include a coil wound coaxially, and the coils face each other in the radial direction. can do.

本発明の非接触給電装置においては、前記受電側基体は、前記回転体の軸方向に対して交差する方向に延在する受電側環状部を介して前記回転体の外周面に固定されており、前記送電側基体は、前記回転体の軸方向に対して交差する方向に延在する送電側環状部を介して前記固定体の内周面に固定されているものとすることができる。
このとき、前記受電側環状部の面に、電子部品が取り付けられた基板が配置されているものとすることができる。 In the non-contact power feeding device of the present invention, the power receiving side substrate is fixed to the outer peripheral surface of the rotating body via a power receiving side annular portion extending in a direction intersecting the axial direction of the rotating body. The power transmission side substrate may be fixed to the inner peripheral surface of the fixed body via a power transmission side annular portion extending in a direction intersecting the axial direction of the rotating body.
At this time, it can be assumed that the substrate on which the electronic component is attached is arranged on the surface of the power receiving side annular portion.

本発明の一例である非接触給電装置を示す縦断面図である。It is a vertical sectional view which shows the non-contact power feeding device which is an example of this invention. 本実施形態にかかる非接触給電装置を構成する部材を抜き出して示す斜視図である。It is a perspective view which shows by extracting the member which comprises the non-contact power feeding apparatus which concerns on this embodiment. 本実施形態にかかる非接触給電装置を構成する受電側基体を示す図であり、図３（ａ）は側面図、図３（ｂ）は断面図である。It is a figure which shows the power receiving side substrate which comprises the non-contact power feeding apparatus which concerns on this embodiment, FIG. 3A is a side view, and FIG. 3B is a sectional view. 本実施形態にかかる非接触給電装置を構成する送電側基体を示す断面図である。It is sectional drawing which shows the power transmission side substrate which comprises the non-contact power feeding apparatus which concerns on this embodiment. 本実施形態にかかる非接触給電装置の一部を抜き出した部分拡大断面図である。It is a partially enlarged cross-sectional view which extracted a part of the non-contact power feeding apparatus which concerns on this embodiment. 本実施形態にかかる非接触給電装置の電気回路図である。It is an electric circuit diagram of the non-contact power supply device which concerns on this embodiment. 本発明の一例である第１の変形例にかかる非接触給電装置を構成する受電側基体を示す図であり、図６（ａ）は側面図であり、図６（ｂ）は断面図である。It is a figure which shows the power receiving side substrate which comprises the non-contact power feeding apparatus which concerns on the 1st modification which is an example of this invention, FIG. 6A is a side view, and FIG. 6B is a sectional view. .. 本発明の一例である第１の変形例にかかる非接触給電装置を構成する送電側基体を示す断面図である。It is sectional drawing which shows the power transmission side base | substrate which comprises the non-contact power feeding apparatus which concerns on the 1st modification which is an example of this invention. 本発明の一例である第２の変形例にかかる非接触給電装置を示す斜視図である。It is a perspective view which shows the non-contact power feeding device which concerns on the 2nd modification which is an example of this invention.

以下、本発明の一例である非接触給電装置の実施形態について、図面を参照しながら説明する。
図１は、本発明の一例である非接触給電装置１を示す縦断面図であり、図２は、本実施形態にかかる非接触給電装置を構成する部材を抜き出して示す斜視図である。図３は、本実施形態にかかる非接触給電装置を構成する受電側基体６を示し、図３（ａ）は側面図、図３（ｂ）は断面図である。図４は、本実施形態にかかる非接触給電装置を構成する送電側基体７を示す断面図である。図５は、本実施形態にかかる非接触給電装置１の一部を抜き出した部分拡大断面図である。図６は、本実施形態にかかる非接触給電装置１のコンデンサを示す回路図である。 Hereinafter, embodiments of the non-contact power feeding device, which is an example of the present invention, will be described with reference to the drawings.
FIG. 1 is a vertical cross-sectional view showing a non-contact power feeding device 1 which is an example of the present invention, and FIG. 2 is a perspective view showing an extracted member constituting the non-contact power feeding device according to the present embodiment. FIG. 3 shows a power receiving side base 6 constituting the non-contact power feeding device according to the present embodiment, FIG. 3A is a side view, and FIG. 3B is a cross-sectional view. FIG. 4 is a cross-sectional view showing a power transmission side base 7 constituting the non-contact power feeding device according to the present embodiment. FIG. 5 is a partially enlarged cross-sectional view of a part of the non-contact power feeding device 1 according to the present embodiment. FIG. 6 is a circuit diagram showing a capacitor of the non-contact power feeding device 1 according to the present embodiment.

なお、本実施形態の説明において、軸線ｘ方向における矢印ａ方向を上側ａとし、矢印ｂ方向を下側ｂとする。また、軸線ｘに垂直な方向（以下、「径方向ｃｄ」ともいう。）において、軸線ｘから遠ざかる方向（矢印ｃ方向）を外周側ｃとし、軸線ｘに向かう方向（矢印ｄ方向）を内周側ｄとする。 In the description of the present embodiment, the arrow a direction in the axis x direction is defined as the upper side a, and the arrow b direction is defined as the lower side b. Further, in the direction perpendicular to the axis x (hereinafter, also referred to as “diameter direction cd”), the direction away from the axis x (arrow c direction) is the outer peripheral side c, and the direction toward the axis x (arrow d direction) is inside. Let it be the peripheral side d.

本実施形態にかかる非接触給電装置は、電動アシスト自転車の左右のペダルに加えられた力がカムシャフトを介して回転力として伝えられるボトムブラケットに適用した例である。なお、当該ボトムブラケットには、補助動力用のモータ（不図示）が取り付けられている。 The non-contact power feeding device according to this embodiment is an example applied to a bottom bracket in which the force applied to the left and right pedals of the electrically power assisted bicycle is transmitted as a rotational force via a camshaft. A motor for auxiliary power (not shown) is attached to the bottom bracket.

図１に示されるように、本実施形態の非接触給電装置１は、回転体２と、回転体２を囲む固定体３と、回転体２の外周面部２ｃに設けられた電子部品４と、を備えている。
回転体２は、軸線ｘ方向の両端部が不図示のカムシャフトを介してペダルに接続され、人がペダルを回転させることにより回転体２が軸線ｘを中心に回転する。 As shown in FIG. 1, the non-contact power feeding device 1 of the present embodiment includes a rotating body 2, a fixed body 3 surrounding the rotating body 2, an electronic component 4 provided on an outer peripheral surface portion 2c of the rotating body 2. It has.
Both ends of the rotating body 2 in the axis x direction are connected to the pedal via a camshaft (not shown), and the rotating body 2 rotates about the axis x when a person rotates the pedal.

回転体２の外周面部２ｃには、後述する受電側基体６が固定されている。
また、回転体２の外周面部２ｃは、外周側ｃから内周側ｄに向けて凹んだ凹部２１を有している。凹部２１は、回転体２の外周面部２ｃに沿って環状に形成されている。すなわち、凹部２１は、回転体２の外周面部２ｃを囲んでいる。この凹部２１には、電子部品４が収容されている。 A power receiving side base 6 described later is fixed to the outer peripheral surface portion 2c of the rotating body 2.
Further, the outer peripheral surface portion 2c of the rotating body 2 has a recess 21 recessed from the outer peripheral side c toward the inner peripheral side d. The recess 21 is formed in an annular shape along the outer peripheral surface portion 2c of the rotating body 2. That is, the recess 21 surrounds the outer peripheral surface portion 2c of the rotating body 2. The electronic component 4 is housed in the recess 21.

固定体３は、中央に回転体２が挿入される孔部３１を有する筒状部材である。
固定体３には、後述する送電側基体７が固定されている。
また、固定体３の上面部３ａは、上側ａから下側ｂに向けて凹んだ溝部３２を有しており、この溝部３２には、固定部材８が挿入される。 The fixed body 3 is a tubular member having a hole 31 in which the rotating body 2 is inserted.
A power transmission side base 7, which will be described later, is fixed to the fixed body 3.
Further, the upper surface portion 3a of the fixed body 3 has a groove portion 32 recessed from the upper side a to the lower side b, and the fixing member 8 is inserted into the groove portion 32.

電子部品４は、人がペダルを回転させる力によって変化する回転体２のひずみを測定するひずみゲージである（以下、電子部品を「ひずみゲージ」と称する。）。
ひずみゲージ４は、回転体２の凹部２１の内部で、回転体２と、後述する受電側基体６と、の間に挟まれて固定されている。 The electronic component 4 is a strain gauge that measures the strain of the rotating body 2 that changes depending on the force by which a person rotates the pedal (hereinafter, the electronic component is referred to as a "strain gauge").
The strain gauge 4 is sandwiched and fixed inside the recess 21 of the rotating body 2 between the rotating body 2 and the power receiving side base 6 described later.

図２乃至図４に示されるように、非接触給電装置１は、軸線ｘ方向において下側ｂに設けられて回転体２に固定された受電側基体６と、軸線ｘ方向において上側ａに設けられて固定体３に固定された送電側基体７と、を備えている。この受電側基体６及び送電側基体７を含む非接触給電装置１により、ひずみゲージ４にワイヤレスで電力を供給することができるようになっている。 As shown in FIGS. 2 to 4, the non-contact power feeding device 1 is provided on the power receiving side base 6 provided on the lower side b in the axis x direction and fixed to the rotating body 2, and on the upper side a in the axis x direction. It is provided with a power transmission side base 7 which is fixed to the fixed body 3. The non-contact power feeding device 1 including the power receiving side base 6 and the power transmitting side base 7 can wirelessly supply electric power to the strain gauge 4.

図２に示されるように、受電側基体６は、回転体２が挿入される孔部６０が中央に形成されている。
また、図３（ａ）及び図３（ｂ）に示されるように、受電側基体６は、回転体２の軸方向に対して交差する方向、例えば軸線ｘ方向に対して垂直な方向に延在する環状の受電側環状部６１と、受電側環状部６１の孔部６０の縁から上側ａへ軸線ｘ方向に平行に延びる筒状の受電側延出部６２と、を有している。この受電側環状部６１及び受電側延出部６２は、絶縁部材で形成されている。 As shown in FIG. 2, the power receiving side base 6 has a hole 60 in the center into which the rotating body 2 is inserted.
Further, as shown in FIGS. 3A and 3B, the power receiving side base 6 extends in a direction intersecting the axial direction of the rotating body 2, for example, in a direction perpendicular to the axis x direction. It has an annular power receiving side annular portion 61 and a tubular power receiving side extending portion 62 extending parallel to the upper side a from the edge of the hole 60 of the power receiving side annular portion 61 in the axial direction x direction. The power receiving side annular portion 61 and the power receiving side extending portion 62 are formed of an insulating member.

受電側環状部６１の上面部６１ａには、電子部品６３（図２）が取り付けられた基板（以下、「制御基板」と称する。）６４が配置されている。
制御基板６４は、後述するように、非接触給電装置により給電された電力を制御してひずみゲージ４に供給する機能を有する。また、制御基板６４は、ひずみゲージ４で検出されたひずみ検出信号を取得する機能も併せ持つ。 A substrate (hereinafter, referred to as “control substrate”) 64 to which the electronic component 63 (FIG. 2) is attached is arranged on the upper surface portion 61a of the power receiving side annular portion 61.
As will be described later, the control board 64 has a function of controlling the electric power supplied by the non-contact power feeding device and supplying it to the strain gauge 4. The control board 64 also has a function of acquiring a strain detection signal detected by the strain gauge 4.

受電側延出部６２は、外周面部６２ｃに軸線ｘ方向に並んだ複数（本実施形態では、２個。）の環状で帯状の導電体（以下、「帯状の導電体」と称する。）６５ａ，６５ｂを備える。
また、図３（ｂ）に示されるように、受電側延出部６２には、外周面部６２ｃ側と内周面部６２ｄ側とを貫通する複数（本実施形態では、４個。）の孔部６６ａ，６６ｂ，６７ａ，６７ｂが形成されている。 The power receiving side extending portion 62 is a plurality of (two in the present embodiment) annular and band-shaped conductors (hereinafter, referred to as “band-shaped conductors”) 65a arranged on the outer peripheral surface portion 62c in the axis x direction. , 65b.
Further, as shown in FIG. 3B, the power receiving side extending portion 62 has a plurality of holes (four in the present embodiment) penetrating the outer peripheral surface portion 62c side and the inner peripheral surface portion 62d side. 66a, 66b, 67a, 67b are formed.

帯状の導電体６５ａ，６５ｂは、導電性の薄膜で形成されている。軸線ｘ方向において、帯状の導電体６５ａは上側ａに、帯状の導電体６５ｂは下側ｂに、それぞれ位置し、何れも、受電側延出部６２の外周面部６２ｃに沿って設けられている。言い換えると、帯状の導電体６５ａは受電側延出部６２の外周面部６２ｃを囲んでいる。
帯状の導電体６５ａと帯状の導電体６５ｂとは、同一構成（形状、構造、大きさ、材質が同一）である。そのため、帯状の導電体６５ａの外周側ｃの面積Ｓ１と、帯状の導電体６５ｂの外周側ｃの面積Ｓ２とは、等しく（Ｓ１＝Ｓ２）なっている。 The band-shaped conductors 65a and 65b are formed of a conductive thin film. In the axis x direction, the band-shaped conductor 65a is located on the upper side a and the band-shaped conductor 65b is located on the lower side b, both of which are provided along the outer peripheral surface portion 62c of the power receiving side extension portion 62. .. In other words, the strip-shaped conductor 65a surrounds the outer peripheral surface portion 62c of the power receiving side extending portion 62.
The band-shaped conductor 65a and the band-shaped conductor 65b have the same configuration (the shape, structure, size, and material are the same). Therefore, the area S1 on the outer peripheral side c of the strip-shaped conductor 65a and the area S2 on the outer peripheral side c of the strip-shaped conductor 65b are equal (S1 = S2).

また、受電側延出部６２の内周面部６２ｄには、制御基板６４と帯状の導電体６５ａ，６５ｂとを接続するリード線６８ａ，６８ｂが設けられている。
リード線６８ａは、帯状の導電体６５ａと制御基板６４とを接続し、リード線６８ｂは、帯状の導電体６５ｂと制御基板６４とを接続する。 Further, lead wires 68a and 68b for connecting the control board 64 and the strip-shaped conductors 65a and 65b are provided on the inner peripheral surface portion 62d of the power receiving side extension portion 62.
The lead wire 68a connects the strip-shaped conductor 65a and the control board 64, and the lead wire 68b connects the strip-shaped conductor 65b and the control board 64.

具体的には、リード線６８ａは、一端側が孔部６６ａに挿通されて帯状の導電体６５ａと接続されており、他端側が孔部６６ｂに挿通されて制御基板６４と接続されている。また、リード線６８ｂは、一端側が孔部６７ａに挿通されて帯状の導電体６５ｂと接続されており、他端側が孔部６７ｂに挿通されて制御基板６４と接続されている。 Specifically, one end of the lead wire 68a is inserted into the hole 66a and connected to the band-shaped conductor 65a, and the other end is inserted through the hole 66b and connected to the control board 64. Further, one end side of the lead wire 68b is inserted into the hole portion 67a and connected to the band-shaped conductor 65b, and the other end side is inserted through the hole portion 67b and connected to the control board 64.

さらに、図１〜図３に示されるように、受電側延出部６２の内周面部６２ｄには、外周側ｃから内周側へ突出した突部６９ａと、内周側ｄから外周側ｃへ凹む凹部（切り欠かれた部分であり、以下、「切欠部」と称する。）６９ｂと、を有している。
突部６９ａは、回転体２に受電側基体６が固定されると、回転体２の凹部２１に収容されたひずみゲージ４の外周側ｃに接触する。切欠部６９ｂは、回転体２に受電側基体６が固定されると、凹部２１の下端部２１ｂに係合する。 Further, as shown in FIGS. 1 to 3, the inner peripheral surface portion 62d of the power receiving side extending portion 62 has a protruding portion 69a protruding from the outer peripheral side c to the inner peripheral side and an outer peripheral side c from the inner peripheral side d. It has a recess (a notched portion, hereinafter referred to as a “notched portion”) 69b, which is recessed into a recess.
When the power receiving side base 6 is fixed to the rotating body 2, the protrusion 69a comes into contact with the outer peripheral side c of the strain gauge 4 housed in the recess 21 of the rotating body 2. When the power receiving side base 6 is fixed to the rotating body 2, the cutout portion 69b engages with the lower end portion 21b of the recess 21.

一方、送電側基体７は、図２に示されるように、受電側基体６の受電側延出部６２が挿入される孔部７０が中央に形成されている。
また、図４に示されるように、送電側基体７は、回転体２の軸方向に対して交差する方向、例えば軸線ｘ方向に対して垂直な方向に延在する送電側環状部７１と、送電側環状部７１の孔部７０の縁から下側ｂへ軸線ｘ方向に平行に延びる筒状の送電側延出部７２と、を有している。この送電側環状部７１及び送電側延出部７２は、絶縁部材で形成されている。 On the other hand, as shown in FIG. 2, the power transmission side base 7 has a hole 70 formed in the center into which the power reception side extension portion 62 of the power reception side base 6 is inserted.
Further, as shown in FIG. 4, the power transmission side base 7 includes a power transmission side annular portion 71 extending in a direction intersecting the axial direction of the rotating body 2, for example, a direction perpendicular to the axis x direction. It has a tubular power transmission side extension portion 72 extending parallel to the axis x direction from the edge of the hole 70 of the power transmission side annular portion 71 to the lower side b. The power transmission side annular portion 71 and the power transmission side extension portion 72 are formed of an insulating member.

送電側環状部７１の下面部７１ｂには、制御基板７４が配置されている。
制御基板７４は、例えば、固定体３に設けられた速度センサ（不図示）などの各種センサの検出信号を取得する。
送電側環状部７１には、固定部材８（図１）が挿通される複数（本実施形態では、４個。）の孔部７９が形成されている。孔部７９は、制御基板７４を貫通している。 A control board 74 is arranged on the lower surface portion 71b of the power transmission side annular portion 71.
The control board 74 acquires detection signals of various sensors such as a speed sensor (not shown) provided on the fixed body 3, for example.
A plurality of holes 79 (in this embodiment, four) through which the fixing member 8 (FIG. 1) is inserted are formed in the power transmission side annular portion 71. The hole 79 penetrates the control board 74.

固定部材８は、雄ネジ状のネジ溝が設けられた軸部８２と、軸部８２よりも大きな径の頭部８１と、を有する（図１）。
送電側延出部７２は、内周面部７２ｄに軸線ｘ方向に並んだ複数（本実施形態では、２個。）の環状で帯状の導電体（以下、「帯状の導電体」と称する。）７５ａ，７５ｂを備える。
また、送電側延出部７２には、外周面部７２ｃ側と内周面部６２ｄ側とを貫通する複数（本実施形態では、４個。）の孔部７６ａ，７６ｂが形成されている。 The fixing member 8 has a shaft portion 82 provided with a male screw-shaped screw groove, and a head portion 81 having a diameter larger than that of the shaft portion 82 (FIG. 1).
The power transmission side extension portion 72 is a plurality of (two in the present embodiment) annular and band-shaped conductors (hereinafter, referred to as “belt-shaped conductors”) arranged on the inner peripheral surface portion 72d in the axis x direction. It includes 75a and 75b.
Further, the power transmission side extending portion 72 is formed with a plurality of holes 76a and 76b (four in the present embodiment) penetrating the outer peripheral surface portion 72c side and the inner peripheral surface portion 62d side.

帯状の導電体７５ａ，７５ｂは、導電性の薄膜で形成されている。軸線ｘ方向において、帯状の導電体７５ａは上側ａに、帯状の導電体７５ｂは下側ｂに、それぞれ位置し、何れも、送電側延出部７２の内周面部７２ｄに沿って設けられている。
帯状の導電体７５ａ及び帯状の導電体７５ｂは、同一構成（形状、構造、大きさ、材質が同一）である。そのため、帯状の導電体７５ａの内周側ｄの面積Ｓ３と、帯状の導電体６５ｂの内周側ｄの面積Ｓ４とが、等しく（Ｓ３＝Ｓ４）なっている。 The band-shaped conductors 75a and 75b are formed of a conductive thin film. In the axis x direction, the strip-shaped conductor 75a is located on the upper side a and the strip-shaped conductor 75b is located on the lower side b, both of which are provided along the inner peripheral surface portion 72d of the power transmission side extension portion 72. There is.
The band-shaped conductor 75a and the band-shaped conductor 75b have the same configuration (same shape, structure, size, and material). Therefore, the area S3 on the inner peripheral side d of the strip-shaped conductor 75a and the area S4 on the inner peripheral side d of the strip-shaped conductor 65b are equal (S3 = S4).

また、送電側延出部７２の内周面部７２ｄ側には、制御基板７４と帯状の導電体７５ａとを接続するリード線７８ａが、送電側延出部７２の外周面部７２ｃ側には、制御基板７４と帯状の導電体７５ｂとを接続するリード線７８ｂが設けられている。
具体的には、リード線７８ａは、一端側が帯状の導電体７５ａと接続されており、他端側が孔部７６ａに挿通されて制御基板７４と接続されている。また、リード線７８ｂは、一端側が孔部７６ｂに挿通されて帯状の導電体７５ｂと接続されており、他端が制御基板７４と接続されている。 Further, a lead wire 78a for connecting the control board 74 and the strip-shaped conductor 75a is provided on the inner peripheral surface portion 72d side of the power transmission side extension portion 72, and a control wire 78a is provided on the outer peripheral surface portion 72c side of the power transmission side extension portion 72. A lead wire 78b for connecting the substrate 74 and the strip-shaped conductor 75b is provided.
Specifically, one end of the lead wire 78a is connected to the band-shaped conductor 75a, and the other end of the lead wire 78a is inserted into the hole 76a and connected to the control board 74. Further, one end of the lead wire 78b is inserted into the hole 76b and connected to the strip-shaped conductor 75b, and the other end is connected to the control board 74.

受電側基体６が回転体２に固定され、送電側基体７が固定体３に固定されると、図５に示されるように、受電側基体６の受電側延出部６２が送電側基体７の送電側延出部７２の内周側ｄに配置され、径方向ｃｄにおいて受電側延出部６２と送電側延出部７２とが対向する。 When the power receiving side base 6 is fixed to the rotating body 2 and the power transmitting side base 7 is fixed to the fixed body 3, as shown in FIG. 5, the power receiving side extending portion 62 of the power receiving side base 6 is fixed to the power transmitting side base 7. It is arranged on the inner peripheral side d of the power transmission side extension portion 72, and the power reception side extension portion 62 and the power transmission side extension portion 72 face each other in the radial direction cd.

具体的には、受電側基体６は、切欠部６９ｂを凹部２１の下端部２１ｂに係合することにより回転体２の外周面部２ｃに固定される。受電側基体６が回転体２に固定されると、回転体２の外周面部２ｃと受電側基体６との間に配置されたひずみゲージ４の外周側ｃに突部６９ａが接触し、回転体２の外周面部２ｃと受電側基体６との間でひずみゲージ４を固定する。
受電側基体６が回転体２の外周面部２ｃに固定されると、受電側延出部６２が回転体２の外周面部２ｃに沿って軸線ｘと平行に配置される。 Specifically, the power receiving side base 6 is fixed to the outer peripheral surface portion 2c of the rotating body 2 by engaging the notch portion 69b with the lower end portion 21b of the recess 21. When the power receiving side base 6 is fixed to the rotating body 2, the protrusion 69a comes into contact with the outer peripheral side c of the strain gauge 4 arranged between the outer peripheral surface portion 2c of the rotating body 2 and the power receiving side base 6, and the rotating body 6 The strain gauge 4 is fixed between the outer peripheral surface portion 2c of 2 and the power receiving side substrate 6.
When the power receiving side base 6 is fixed to the outer peripheral surface portion 2c of the rotating body 2, the power receiving side extending portion 62 is arranged along the outer peripheral surface portion 2c of the rotating body 2 in parallel with the axis x.

また、送電側環状部７１は、孔部７９を挿通させた固定部材８を溝部３２に形成された雌ネジにねじ込んで挿入することにより、固定体３の上面部３ａに固定される。
送電側環状部７１が固定体３の上面部３ａに固定されると、送電側延出部７２が固定体３の内周面部３ｄに沿って軸線ｘと平行に配置される。 Further, the power transmission side annular portion 71 is fixed to the upper surface portion 3a of the fixed body 3 by screwing the fixing member 8 through which the hole portion 79 is inserted into the female screw formed in the groove portion 32 and inserting the fixing member 8.
When the power transmission side annular portion 71 is fixed to the upper surface portion 3a of the fixed body 3, the power transmission side extension portion 72 is arranged along the inner peripheral surface portion 3d of the fixed body 3 in parallel with the axis x.

受電側延出部６２の径方向ｃｄにおける径の大きさＡ（図３（ｂ））は、送電側延出部７２の径方向ｃｄにおける径の大きさＢ（図４）より小さく（Ａ＜Ｂ）なっている。そのため、受電側基体６の受電側延出部６２が送電側基体７の送電側延出部７２の内周側ｄに配置され、径方向ｃｄにおいて受電側延出部６２と送電側延出部７２とが対向する。 The diameter size A (FIG. 3 (b)) of the power receiving side extension portion 62 in the radial direction cd is smaller than the diameter size B (FIG. 4) of the power transmission side extension portion 72 in the radial direction cd (A < B) It is. Therefore, the power receiving side extension portion 62 of the power receiving side base 6 is arranged on the inner peripheral side d of the power transmission side extension portion 72 of the power transmission side base 7, and the power receiving side extension portion 62 and the power transmission side extension portion in the radial cd. 72 faces each other.

また、受電側延出部６２が送電側延出部７２の内周側ｄに配置されると、径方向ｃｄにおいて受電側基体６の帯状の導電体６５ａ，６５ｂと送電側延出部７２の帯状の導電体７５ａ，７５ｂとが対向する。
帯状の導電体６５ａと帯状の導電体７５ａ、帯状の導電体６５ｂと帯状の導電体７５ｂは、回転体２が回転した場合でも、互いに接触することがないように、径方向ｃｄにおいて所定の間隙だけ離間して配置されている。 Further, when the power receiving side extension portion 62 is arranged on the inner peripheral side d of the power transmission side extension portion 72, the strip-shaped conductors 65a and 65b of the power reception side base 6 and the power transmission side extension portion 72 in the radial direction cd. The strip-shaped conductors 75a and 75b face each other.
The band-shaped conductor 65a and the band-shaped conductor 75a, and the band-shaped conductor 65b and the band-shaped conductor 75b have a predetermined gap in the radial cd so that they do not come into contact with each other even when the rotating body 2 rotates. They are arranged apart from each other.

即ち、帯状の導電体６５ａと帯状の導電体７５ａ、帯状の導電体６５ｂと帯状の導電体７５ｂで、それぞれ一対のコンデンサが形成された状態になっている。
図６に、本実施形態にかかる非接触給電装置１の電気回路図を示す。図６に示されるように、対向する帯状の導電体６５ａ及び帯状の導電体７５ａによって１のコンデンサＣ１が構成され、同様に、対向する帯状の導電体６５ｂ及び帯状の導電体７５ｂによって、他のコンデンサＣ２が構成されている。ひずみゲージ４への供給電流を制御する制御基板６４に相当する抵抗Ｒの両端子に、両コンデンサＣ１，Ｃ２の一方の端子が接続されている。そして、両コンデンサＣ１，Ｃ２の他方の端子に外部電源Ｐが接続されて、本実施形態にかかる非接触給電装置１の電気回路が構成されている。 That is, a pair of capacitors are formed by the band-shaped conductor 65a and the band-shaped conductor 75a, and the band-shaped conductor 65b and the band-shaped conductor 75b, respectively.
FIG. 6 shows an electric circuit diagram of the non-contact power feeding device 1 according to the present embodiment. As shown in FIG. 6, the capacitor C1 of 1 is composed of the opposing strip-shaped conductors 65a and the strip-shaped conductors 75a, and similarly, the opposing strip-shaped conductors 65b and the strip-shaped conductors 75b form another capacitor C1. The capacitor C2 is configured. One terminal of both capacitors C1 and C2 is connected to both terminals of the resistor R corresponding to the control board 64 that controls the supply current to the strain gauge 4. Then, an external power supply P is connected to the other terminals of both capacitors C1 and C2 to form an electric circuit of the non-contact power feeding device 1 according to the present embodiment.

外部電源Ｐから、２つのコンデンサＣ１，Ｃ２を介して高周波電流が制御基板７４に供給されると、制御基板７４によって整流され、かつ制御された電力がひずみゲージ４に供給されるようになっている。 When a high-frequency current is supplied from the external power supply P to the control board 74 via the two capacitors C1 and C2, the power rectified by the control board 74 and controlled is supplied to the strain gauge 4. There is.

本実施形態においては、コンデンサＣ１を構成する帯状の導電体６５ａ及び帯状の導電体７５ａの間、及び、コンデンサＣ２を構成する帯状の導電体６５ｂ及び帯状の導電体７５ｂの間が、それぞれ所定の間隙だけ離間している（非接触である）。したがって、本実施形態にかかる非接触給電装置１は、電界結合共鳴方式による非接触給電装置となっている。 In the present embodiment, the space between the band-shaped conductor 65a and the band-shaped conductor 75a constituting the capacitor C1 and the space between the band-shaped conductor 65b and the band-shaped conductor 75b constituting the capacitor C2 are predetermined, respectively. They are separated by a gap (non-contact). Therefore, the non-contact power feeding device 1 according to the present embodiment is a non-contact power feeding device based on the electric field coupling resonance method.

本実施形態においては、一対のコンデンサを形成する導電体同士の面積が等しくなっている。具体的には、帯状の導電体６５ａの面積Ｓ１と帯状の導電体７５ａの面積Ｓ３、及び、帯状の導電体６５ｂの面積Ｓ２と帯状の導電体７５ｂの面積Ｓ４が、それぞれ等しく（Ｓ１＝Ｓ３、Ｓ２＝Ｓ４）なっている。 In this embodiment, the areas of the conductors forming the pair of capacitors are equal. Specifically, the area S1 of the strip-shaped conductor 65a and the area S3 of the strip-shaped conductor 75a, and the area S2 of the strip-shaped conductor 65b and the area S4 of the strip-shaped conductor 75b are equal (S1 = S3). , S2 = S4).

本実施形態では、さらに、Ｓ１、Ｓ２、Ｓ３、Ｓ４の全ての面積が等しくなっている（Ｓ１＝Ｓ２＝Ｓ３＝Ｓ４）。なお、Ｓ１、Ｓ２、Ｓ３、Ｓ４の一部あるいは全ての面積が異なっていても、帯状の導電体同士が対向する部分があれば、そこにコンデンサが形成されるため、回路は通電し、ひずみゲージ４に電力を供給することができる。 Further, in the present embodiment, all the areas of S1, S2, S3, and S4 are equal (S1 = S2 = S3 = S4). Even if some or all of the areas of S1, S2, S3, and S4 are different, if there is a portion where the band-shaped conductors face each other, a capacitor is formed there, so that the circuit is energized and strained. Power can be supplied to the gauge 4.

本実施形態にかかる非接触給電装置１は、環状の受電側基体６が回転体２に設けられ、環状の送電側基体７が固定体３に設けられ、径方向ｃｄにおいて、受電側基体６と送電側基体７とが、延いては、帯状の導電体６５ａ，６５ｂと、帯状の導電体７５ａ，７５ｂとが対向している。 In the non-contact power feeding device 1 according to the present embodiment, the annular power receiving side base 6 is provided on the rotating body 2, the annular power transmitting side base 7 is provided on the fixed body 3, and the power receiving side base 6 and the power receiving side base 6 are provided in the radial direction cd. The power transmission side base 7 extends, and the band-shaped conductors 65a and 65b and the band-shaped conductors 75a and 75b face each other.

よって、回転体２が固定体３に対して回転しても、受電側基体６と送電側基体７との相対的な位置関係がずれることが無いので、受電側基体６と送電側基体７との間の位置合わせをする必要が無い。さらに、回転体２が回転したままの状態でも、受電側基体６が回転体２と連れ回って、固定体３に固定された送電側基体７との相対的位置関係が変化しないため、受電側基体６と送電側基体７との相対的な位置関係が変わることが無く、制御基板６４を介してひずみゲージ４に効率良く電力を供給することができる。 Therefore, even if the rotating body 2 rotates with respect to the fixed body 3, the relative positional relationship between the power receiving side base 6 and the power transmitting side base 7 does not shift, so that the power receiving side base 6 and the power transmitting side base 7 There is no need to align between. Further, even when the rotating body 2 is still rotating, the power receiving side base 6 rotates with the rotating body 2 and the relative positional relationship with the power transmitting side base 7 fixed to the fixed body 3 does not change. The relative positional relationship between the base 6 and the power transmission side base 7 does not change, and power can be efficiently supplied to the strain gauge 4 via the control board 64.

また、帯状の導電体を備えた薄い筒状の受電側基体６と送電側基体７とが対向している構成であるため、非接触給電装置１を構成する部材を設けるためのスペースが、径方向には少なくて済み、軸線ｘ方向には広がることがなく、非接触給電装置１の省スペース化を図ることができる。 Further, since the thin tubular power receiving side base 6 having the band-shaped conductor and the power transmitting side base 7 face each other, the space for providing the member constituting the non-contact power feeding device 1 has a diameter. The amount of the non-contact power feeding device 1 can be saved because the amount of the non-contact power feeding device 1 can be reduced in the direction and does not spread in the axis x direction.

本実施形態にかかる非接触給電装置１は、受電側基体６が回転体２の外周面部２ｃを囲んでおり、送電側基体７が固定体３の内周面部３ｄを囲んでいる。そのため、非接触給電装置１の省スペース化を図ることができるとともに、回転体２が回転したままの状態でも受電側基体６と送電側基体７との相対的な位置関係が変わることが無く、制御基板６４を介してひずみゲージ４に効率良く電力を供給することができる。 In the non-contact power feeding device 1 according to the present embodiment, the power receiving side base 6 surrounds the outer peripheral surface portion 2c of the rotating body 2, and the power transmitting side base 7 surrounds the inner peripheral surface portion 3d of the fixed body 3. Therefore, the space of the non-contact power feeding device 1 can be saved, and the relative positional relationship between the power receiving side base 6 and the power transmitting side base 7 does not change even when the rotating body 2 is still rotating. Power can be efficiently supplied to the strain gauge 4 via the control board 64.

本実施形態にかかる非接触給電装置１は、受電側基体６及び送電側基体７が、それぞれ帯状の導電体６５ａ，６５ｂ，７５ａ，７５ｂを備える。そのため、帯状の導電体６５ａ，６５ｂ，７５ａ，７５ｂにより、送電側基体７から受電側基体６へ非接触で電力を供給することができる。 In the non-contact power feeding device 1 according to the present embodiment, the power receiving side base 6 and the power transmitting side base 7 are provided with band-shaped conductors 65a, 65b, 75a, and 75b, respectively. Therefore, the band-shaped conductors 65a, 65b, 75a, and 75b can supply electric power from the power transmitting side base 7 to the power receiving side base 6 in a non-contact manner.

本実施形態にかかる非接触給電装置１は、受電側基体６が備える帯状の導電体６５ａ，６５ｂと、送電側基体７が備える帯状の導電体７５ａ，７５ｂと、で一対の２個のコンデンサが形成されている。そのため、電界結合共鳴方式により、帯状の導電体６５ａ，６５ｂと帯状の導電体７５ａ，７５ｂとの間で電荷の移動が起こり、送電側基体７から受電側基体６へ非接触で電力を供給することができる。 In the non-contact power feeding device 1 according to the present embodiment, a pair of two capacitors are formed by a band-shaped conductors 65a and 65b included in the power receiving side base 6 and a band-shaped conductors 75a and 75b included in the power transmitting side base 7. It is formed. Therefore, due to the electric field coupling resonance method, electric charge is transferred between the band-shaped conductors 65a and 65b and the band-shaped conductors 75a and 75b, and power is supplied from the power transmitting side base 7 to the power receiving side base 6 in a non-contact manner. be able to.

本実施形態にかかる非接触給電装置１は、一対のコンデンサを形成する帯状の導電体６５ａと帯状の導電体７５ａ同士、帯状の導電体６５ｂと帯状の導電体７５ｂ同士の面積がそれぞれ等しい。そのため、一対のコンデンサを形成する導電体同士の面積が等しいため、相互に全面積が対向する状態となり、電気的なバランスが取れ、給電効率が良好になる。 In the non-contact power feeding device 1 according to the present embodiment, the areas of the band-shaped conductor 65a and the band-shaped conductor 75a forming a pair of capacitors are equal to each other, and the areas of the band-shaped conductor 65b and the band-shaped conductor 75b are equal to each other. Therefore, since the areas of the conductors forming the pair of capacitors are the same, the entire areas face each other, the electrical balance is balanced, and the power feeding efficiency is improved.

本実施形態にかかる非接触給電装置１は、受電側基体６が備える帯状の導電体６５ａ，６５ｂと、送電側基体が備える帯状の導電体７５ａ，７５ｂが、それぞれ回転体２の軸方向に複数並んでいる。そのため、帯状の導電体６５ａと帯状の導電体７５ａ、帯状の導電体６５ｂと帯状の導電体７５ｂの位置がずれることを抑制して、効率良く給電することができる。 In the non-contact power feeding device 1 according to the present embodiment, the band-shaped conductors 65a and 65b included in the power receiving side base 6 and the band-shaped conductors 75a and 75b included in the power transmitting side base 6 are each provided in the axial direction of the rotating body 2. They are lined up. Therefore, it is possible to suppress the displacement of the band-shaped conductor 65a and the band-shaped conductor 75a, and the positions of the band-shaped conductor 65b and the band-shaped conductor 75b, and to efficiently supply power.

本実施形態にかかる非接触給電装置１は、受電側基体６が備える複数の帯状の導電体６５ａ，６５ｂ同士、及び、送電側基体７が備える複数の帯状の導電体７５ａ，７５ｂ同士は、それぞれ面積が等しい。そのため、形成される２つのコンデンサの静電容量が等しくなり、効率良く充電することができる。 In the non-contact power feeding device 1 according to the present embodiment, the plurality of strip-shaped conductors 65a and 65b included in the power receiving side base 6 and the plurality of strip-shaped conductors 75a and 75b included in the power transmitting side base 7 are respectively. The areas are equal. Therefore, the capacitances of the two formed capacitors are equal to each other, and charging can be performed efficiently.

本実施形態にかかる非接触給電装置１は、受電側基体６が備える帯状の導電体６５ａ，６５ｂ、及び、送電側基体７が備える帯状の導電体７５ａ，７５ｂが、導電性の薄膜で形成されている。そのため、受電側基体６及び送電側基体７を設けるスペースが径方向ｃｄに広がることなく省スペース化を図ることができる。 In the non-contact power feeding device 1 according to the present embodiment, the band-shaped conductors 65a and 65b included in the power receiving side base 6 and the band-shaped conductors 75a and 75b included in the power transmission side base 7 are formed of a conductive thin film. ing. Therefore, the space for providing the power receiving side base 6 and the power transmitting side base 7 does not expand in the radial cd, and the space can be saved.

本実施形態にかかる非接触給電装置１は、回転体２の外周面部２ｃと受電側基体６との間にはひずみゲージ４が配置されている。そのため、送電側基体７から非接触で供給された電力を、受電側基体６を介してひずみゲージ４へ供給することができるとともに、スペース効率が良く、小型化を実現することができる。 In the non-contact power feeding device 1 according to the present embodiment, a strain gauge 4 is arranged between the outer peripheral surface portion 2c of the rotating body 2 and the power receiving side substrate 6. Therefore, the electric power supplied from the power transmitting side base 7 in a non-contact manner can be supplied to the strain gauge 4 via the power receiving side base 6, space efficiency is good, and miniaturization can be realized.

本実施形態にかかる非接触給電装置１は、受電側基体６が、回転体２の軸方向に対して交差する方向、例えば軸線ｘ方向に対して垂直な方向に延在する受電側環状部６１を介して回転体２の外周面部２ｃに固定されている。また、送電側基体７は、回転体２の軸方向に対して交差する方向、例えば軸線ｘ方向に対して垂直な方向に延在する送電側環状部７１を介して固定体３の内周面部３ｄに固定されている。そのため、回転体２が回転する際、受電側基体６と送電側基体７とが干渉することがない。 In the non-contact power feeding device 1 according to the present embodiment, the power receiving side annular portion 61 extends in a direction in which the power receiving side base 6 intersects the axial direction of the rotating body 2, for example, in a direction perpendicular to the axis x direction. It is fixed to the outer peripheral surface portion 2c of the rotating body 2 via. Further, the power transmission side base 7 is an inner peripheral surface portion of the fixed body 3 via a power transmission side annular portion 71 extending in a direction intersecting the axial direction of the rotating body 2, for example, a direction perpendicular to the axis x direction. It is fixed at 3d. Therefore, when the rotating body 2 rotates, the power receiving side base 6 and the power transmitting side base 7 do not interfere with each other.

本実施形態にかかる非接触給電装置１は、受電側環状部６１の面に、電子部品６３が取り付けられた制御基板７４が配置されている。よって、空いているスペースに制御基板７４を配することができるため、スペース効率が良く、小型化を実現することができる。 In the non-contact power feeding device 1 according to the present embodiment, the control board 74 to which the electronic component 63 is attached is arranged on the surface of the power receiving side annular portion 61. Therefore, since the control board 74 can be arranged in the vacant space, space efficiency is good and miniaturization can be realized.

次に、本発明の変形例にかかる非接触給電装置について説明する。
本変形例の説明において、上記実施形態と同一の機能及び構造の部材乃至部品については、上記実施形態と同一となる符号を付して、その詳細な説明を省略している（ただし、特に説明を加えている場合はこの限りではない。）。 Next, the non-contact power feeding device according to the modified example of the present invention will be described.
In the description of this modification, members or parts having the same functions and structures as those in the above embodiment are designated by the same reference numerals as those in the above embodiment, and detailed description thereof is omitted (however, in particular, the description thereof will be omitted. This does not apply if is added.)

図７は、本発明の一例である第１の変形例にかかる非接触給電装置を構成する受電側基体１０６を示し、図７（ａ）は側面図、図７（ｂ）は断面図である。図８は、本発明の一例である第１の変形例にかかる非接触給電装置を構成する送電側基体１０７を示す断面図である。
第１の変形例においては、受電側基体１０６の帯状の導電体１６５ａ，１６５ｂ、及び、送電側基体１０７の帯状の導電体１７５ａ，１７５ｂの形状が、上記実施形態の帯状の導電体６５ａ，６５ｂ、及び、帯状の導電体７５ａ，７５ｂの形状とは異なっている。 7A and 7B show a power receiving side base 106 constituting a non-contact power feeding device according to a first modification which is an example of the present invention, FIG. 7A is a side view, and FIG. 7B is a cross-sectional view. .. FIG. 8 is a cross-sectional view showing a power transmission side base 107 constituting a non-contact power feeding device according to a first modification, which is an example of the present invention.
In the first modification, the shapes of the band-shaped conductors 165a and 165b of the power receiving side base 106 and the band-shaped conductors 175a and 175b of the power transmission side base 107 are the band-shaped conductors 65a and 65b of the above embodiment. , And the shapes of the strip-shaped conductors 75a and 75b are different.

なお、本変形例では、受電側基体１０６が取り付けられる回転体２及び送電側基体１０７が取り付けられる固定体３について図示しないが、上記実施形態と同様、図１や図５に示される態様でこれらが取り付けられており、かつ、組み合わされた上で非接触給電装置としての使用に供される。 In this modification, the rotating body 2 to which the power receiving side base 106 is attached and the fixed body 3 to which the power transmitting side base 107 is attached are not shown, but they are shown in FIGS. 1 and 5 as in the above embodiment. Is attached and combined for use as a non-contact power supply device.

図７（ａ），（ｂ）に示されるように、受電側基体１０６の受電側延出部６２は、外周面部６２ｃに軸線ｘ方向に並んだ複数（本実施形態では、２個。）の帯状の導電体１６５ａ，１６５ｂを備える。
帯状の導電体１６５ａ，１６５ｂは、導電性の薄膜で形成されている。軸線ｘ方向において、帯状の導電体１６５ａは上側ａに、帯状の導電体１６５ｂは下側ｂに、それぞれ位置し、何れも、受電側延出部６２の外周面部６２ｃに沿って設けられている。言い換えると、帯状の導電体１６５ａ，１６５ｂは、受電側延出部６２の外周面部６２ｃを囲んでいる。
帯状の導電体１６５ａと帯状の導電体１６５ｂとは、構造、材質が同一であるが形状が異なる。 As shown in FIGS. 7A and 7B, there are a plurality of power receiving side extending portions 62 of the power receiving side base 106 arranged on the outer peripheral surface portion 62c in the axis x direction (two in the present embodiment). The band-shaped conductors 165a and 165b are provided.
The band-shaped conductors 165a and 165b are formed of a conductive thin film. In the axis x direction, the band-shaped conductor 165a is located on the upper side a and the band-shaped conductor 165b is located on the lower side b, both of which are provided along the outer peripheral surface portion 62c of the power receiving side extension portion 62. .. In other words, the strip-shaped conductors 165a and 165b surround the outer peripheral surface portion 62c of the power receiving side extending portion 62.
The band-shaped conductor 165a and the band-shaped conductor 165b have the same structure and material, but different shapes.

具体的には、帯状の導電体１６５ａは、受電側延出部６２の外周面部６２ｃに環状に設けられた環状部１９１と、環状部１９１の下部１９１ｂから受電側環状部６１側へ延出した延出部１９２と、を有している。
一方で、帯状の導電体１６５ｂは、環が途中で途切れて、一端部１９３ａ及び他端部１９３ｂが形成されている。帯状の導電体１６５ｂは、受電側延出部６２の外周面部６２ｃに帯状に設けられた帯状部１９３と、帯状部１９３の一端部１９３ａの下部１９１ｂから送電側環状部７１へ延出する延出部１９４と、を有している。なお、一端部１９３ａと他端部１９３ｂとの間は離間しており、その離間したスペースに延出部１９２が配置されている。 Specifically, the strip-shaped conductor 165a extends from the annular portion 191 provided on the outer peripheral surface portion 62c of the power receiving side extending portion 62 in an annular shape and the lower portion 191b of the annular portion 191 to the power receiving side annular portion 61 side. It has an extension portion 192 and.
On the other hand, in the band-shaped conductor 165b, the ring is interrupted in the middle, and one end portion 193a and the other end portion 193b are formed. The strip-shaped conductor 165b extends from the strip-shaped portion 193 provided on the outer peripheral surface portion 62c of the power receiving side extending portion 62 and the lower portion 191b of one end portion 193a of the strip-shaped portion 193 to the power transmission side annular portion 71. It has a part 194 and. The one end portion 193a and the other end portion 193b are separated from each other, and the extending portion 192 is arranged in the separated space.

本変形例においては、帯状の導電体１６５ａと帯状の導電体１６５ｂとの形状は異なるが、帯状の導電体１６５ａの環状部１９１と、帯状の導電体１６５ｂの帯状部１９３の面積は等しい。
即ち、帯状の導電体１６５ａの環状部１９１の面積Ｓ５と、帯状の導電体１６５ｂの帯状部１９３の面積Ｓ６とが、等しく（Ｓ５＝Ｓ６）なっている。 In this modification, the shapes of the strip-shaped conductor 165a and the strip-shaped conductor 165b are different, but the areas of the annular portion 191 of the strip-shaped conductor 165a and the strip-shaped portion 193 of the strip-shaped conductor 165b are the same.
That is, the area S5 of the annular portion 191 of the strip-shaped conductor 165a and the area S6 of the strip-shaped portion 193 of the strip-shaped conductor 165b are equal (S5 = S6).

また、受電側延出部６２の外周面部６２ｃには、制御基板６４と帯状の導電体１６５ａ，１６５ｂとを接続するリード線１６８ａ，１６８ｂが設けられている。
リード線１６８ａは、一端側が帯状の導電体１６５ａの延出部１９２と接続されており、他端側が制御基板６４と接続されている。また、リード線１６８ｂは、一端側が帯状の導電体１６５ｂの延出部１９４と接続されており、他端側が制御基板６４と接続されている。 Further, lead wires 168a and 168b for connecting the control board 64 and the strip-shaped conductors 165a and 165b are provided on the outer peripheral surface portion 62c of the power receiving side extension portion 62.
One end of the lead wire 168a is connected to the extending portion 192 of the strip-shaped conductor 165a, and the other end is connected to the control board 64. Further, one end side of the lead wire 168b is connected to the extending portion 194 of the strip-shaped conductor 165b, and the other end side is connected to the control board 64.

図８に示されるように、送電側基体１０７の送電側延出部７２は、内周面部７２ｄに軸線ｘ方向に並んだ複数（本実施形態では、２個。）の環状の帯状の導電体１７５ａ，１７５ｂを備える。
また、送電側延出部７２には、外周面部７２ｃ側と内周面部６２ｄ側とを貫通する複数（本変形例では、２個。）の孔部１７６ａ，１７６ｂが形成されている。 As shown in FIG. 8, the power transmission side extension portion 72 of the power transmission side base 107 is a plurality of (two in this embodiment) annular band-shaped conductors arranged on the inner peripheral surface portion 72d in the axis x direction. It includes 175a and 175b.
Further, the power transmission side extending portion 72 is formed with a plurality of (two in this modified example) hole portions 176a and 176b penetrating the outer peripheral surface portion 72c side and the inner peripheral surface portion 62d side.

帯状の導電体１７５ａ，１７５ｂは、導電性の薄膜で形成されている。軸線ｘ方向において、帯状の導電体１７５ａは上側ａに、帯状の導電体１７５ｂは下側ｂに、それぞれ位置し、何れも、送電側延出部７２の内周面部７２ｄに沿って設けられている。言い換えると、帯状の導電体１７５ａ，１７５ｂは、送電側延出部７２の内周面部７２ｄを囲んでいる。
帯状の導電体１７５ａと帯状の導電体１７５ｂとは、構造、材質が同一であるが形状が異なる。 The band-shaped conductors 175a and 175b are formed of a conductive thin film. In the axis x direction, the band-shaped conductor 175a is located on the upper side a and the band-shaped conductor 175b is located on the lower side b, both of which are provided along the inner peripheral surface portion 72d of the power transmission side extension portion 72. There is. In other words, the strip-shaped conductors 175a and 175b surround the inner peripheral surface portion 72d of the power transmission side extension portion 72.
The band-shaped conductor 175a and the band-shaped conductor 175b have the same structure and material, but different shapes.

具体的には、帯状の導電体１７５ａは、環が途中で途切れて、一端部１９９ａ及び他端部１９９ｂが形成されている。帯状の導電体１７５ａは、送電側延出部７２の内周面部７２ｄに帯状に設けられた帯状部１９５と、帯状部１９５の他端部１９９ｂの上部１９５ａから送電側環状部７１側へ突出した突出部１９６と、を有している。なお、一端部１９９ａと他端部１９９ｂとの間は離間している。 Specifically, in the band-shaped conductor 175a, the ring is interrupted in the middle, and one end portion 199a and the other end portion 199b are formed. The strip-shaped conductor 175a protrudes from the strip-shaped portion 195 provided on the inner peripheral surface portion 72d of the power transmission side extension portion 72 and the upper portion 195a of the other end portion 199b of the strip-shaped portion 195 toward the power transmission side annular portion 71 side. It has a protruding portion 196 and. The one end 199a and the other end 199b are separated from each other.

一方で、帯状の導電体１７５ｂは、送電側延出部７２の内周面部７２ｄに環状に設けられた環状部１９７と、環状部１９７の上部１９７ａから送電側環状部７１側へ延出した延出部１９８と、を有している。なお、帯状の導電体１７５ａにおける一端部１９９ａと他端部１９９ｂとの間のスペースには、延出部１９８が配置されている。 On the other hand, the strip-shaped conductor 175b has an annular portion 197 provided in an annular shape on the inner peripheral surface portion 72d of the power transmission side extension portion 72 and an extension extending from the upper portion 197a of the annular portion 197 to the power transmission side annular portion 71 side. It has a part 198 and. An extension portion 198 is arranged in the space between one end portion 199a and the other end portion 199b of the strip-shaped conductor 175a.

本変形例においては、帯状の導電体１７５ａの帯状部１９５と帯状の導電体１７５ｂの環状部１９７との形状は異なるが、面積は等しい。
即ち、帯状の導電体１７５ａの帯状部１９５の面積Ｓ７と帯状の導電体１７５ｂの環状部１９７の面積Ｓ８とが、等しく（Ｓ７＝Ｓ８）なっている。 In this modification, the strip-shaped portion 195 of the strip-shaped conductor 175a and the annular portion 197 of the strip-shaped conductor 175b are different in shape, but have the same area.
That is, the area S7 of the strip-shaped portion 195 of the strip-shaped conductor 175a and the area S8 of the annular portion 197 of the strip-shaped conductor 175b are equal (S7 = S8).

また、送電側延出部７２の外周面部７２ｃには、制御基板７４と帯状の導電体１７５ａ，１７５ｂとを接続するリード線１７８ａ，１７８ｂが設けられている。
具体的には、リード線１７８ａは、一端側が帯状の導電体１７５ａの突出部１９６と接続されており、他端側が孔部１７６ａに挿通されて制御基板７４と接続されている。また、リード線１７８ｂは、一端側が孔部１７６ｂに挿通されて帯状の導電体１７５ｂの延出部１９８と接続されており、他端が制御基板７４と接続されている。 Further, lead wires 178a and 178b for connecting the control board 74 and the strip-shaped conductors 175a and 175b are provided on the outer peripheral surface portion 72c of the power transmission side extension portion 72.
Specifically, one end side of the lead wire 178a is connected to the protruding portion 196 of the strip-shaped conductor 175a, and the other end side is inserted into the hole portion 176a and connected to the control board 74. Further, one end of the lead wire 178b is inserted into the hole 176b and connected to the extending portion 198 of the strip-shaped conductor 175b, and the other end is connected to the control board 74.

帯状の導電体１６５ａと帯状の導電体１７５ａ、帯状の導電体１６５ｂと帯状の導電体１７５ｂで、それぞれ一対のコンデンサが形成された状態になっている。
そして、帯状の導電体１６５ａの環状部１９１の面積Ｓ５と帯状の導電体１７５ａの帯状部１９５の面積Ｓ７、帯状の導電体１６５ｂの帯状部１９３の面積Ｓ６と帯状の導電体１７５ｂの環状部１９７の面積Ｓ８が、等しく（Ｓ５＝Ｓ７、Ｓ６＝Ｓ８）なっている。なお、Ｓ５、Ｓ６、Ｓ７、Ｓ８の一部あるいは全ての面積が異なっていても、帯状の導電体同士が対向する部分があれば、そこにコンデンサが形成されるため、回路は通電し、ひずみゲージ４に電力を供給することができる。 A pair of capacitors are formed by the band-shaped conductor 165a and the band-shaped conductor 175a, and the band-shaped conductor 165b and the band-shaped conductor 175b, respectively.
Then, the area S5 of the annular portion 191 of the strip-shaped conductor 165a, the area S7 of the strip-shaped portion 195 of the strip-shaped conductor 175a, the area S6 of the strip-shaped portion 193 of the strip-shaped conductor 165b, and the annular portion 197 of the strip-shaped conductor 175b. Area S8 is equal (S5 = S7, S6 = S8). Even if some or all of the areas of S5, S6, S7, and S8 are different, if there is a portion where the band-shaped conductors face each other, a capacitor is formed there, so that the circuit is energized and strained. Power can be supplied to the gauge 4.

本変形例にかかる受電側基体１０６及び送電側基体１０７においても、受電側基体１０６と送電側基体１０７とが、延いては、帯状の導電体１６５ａの環状部１９１と帯状の導電体１７５ａの帯状部１９５とが、並びに、帯状の導電体１６５ｂの帯状部１９３と帯状の導電体１７５ｂの環状部１９７とが、それぞれ対向している。 In the power receiving side base 106 and the power transmitting side base 107 according to this modification, the power receiving side base 106 and the power transmitting side base 107 are further formed in a strip shape of the annular portion 191 of the strip-shaped conductor 165a and the strip-shaped conductor 175a. The portion 195 and the strip-shaped portion 193 of the strip-shaped conductor 165b and the annular portion 197 of the strip-shaped conductor 175b face each other.

よって、本変形例では不図示の回転体２が同不図示の固定体３に対して回転しても、受電側基体１０６と送電側基体１０７との相対的な位置関係がずれることが無いので、受電側基体１０６と送電側基体１０７との間の位置合わせをする必要が無い。さらに、回転体２が回転したままの状態でも、回転体２と連れ回る受電側基体１０６が回転したままの状態でも、固定体３に固定された送電側基体１０７との相対的位置関係が変化しない。そのため、制御基板６４を介してひずみゲージ４に効率良く非接触で電力を供給することができる。 Therefore, in this modification, even if the rotating body 2 (not shown) rotates with respect to the fixed body 3 (not shown), the relative positional relationship between the power receiving side base 106 and the power transmitting side base 107 does not shift. , It is not necessary to align the power receiving side base 106 and the power transmitting side base 107. Further, the relative positional relationship with the power transmission side base 107 fixed to the fixed body 3 changes regardless of whether the rotating body 2 is still rotating or the power receiving side base 106 that accompanies the rotating body 2 is still rotating. do not. Therefore, electric power can be efficiently and non-contactly supplied to the strain gauge 4 via the control board 64.

また、帯状の導電体を備えた薄い筒状の受電側基体１０６と送電側基体１０７とが対向している構成であるため、非接触給電装置を構成する部材を設けるためのスペースが、径方向には少なくて済み、軸線ｘ方向には広がることがなく、非接触給電装置の省スペース化を図ることができる。 Further, since the thin tubular power receiving side base 106 having the band-shaped conductor and the power transmitting side base 107 face each other, the space for providing the member constituting the non-contact power feeding device is provided in the radial direction. It is possible to save space in the non-contact power feeding device because it does not spread in the x-direction of the axis.

図９は、第２の変形例にかかる非接触給電装置を示す斜視図である。
第２の変形例においては、受電側基体２０６は帯状の導電体６５ａ，６５ｂを備えておらず、コイル２６５を備えている点、送電側基体２０７は帯状の導電体７５ａ，７５ｂを備えておらず、コイル２７５を備えている点で、上記実施形態や変形例１とは異なっている。 FIG. 9 is a perspective view showing a non-contact power feeding device according to the second modification.
In the second modification, the power receiving side base 206 does not have the band-shaped conductors 65a and 65b but includes the coil 265, and the power transmitting side base 207 includes the band-shaped conductors 75a and 75b. However, it is different from the above-described embodiment and the first modification in that the coil 275 is provided.

なお、本変形例では、受電側基体２０６が取り付けられる回転体２及び送電側基体２０７が取り付けられる固定体３について図示しないが、上記実施形態と同様、図１や図５に示される態様でこれらが取り付けられており、かつ、組み合わされた上で非接触給電装置としての使用に供される。 In this modification, the rotating body 2 to which the power receiving side base 206 is attached and the fixed body 3 to which the power transmitting side base 207 is attached are not shown, but they are shown in FIGS. 1 and 5 as in the above embodiment. Is attached and combined for use as a non-contact power supply device.

図９に示されるように、受電側基体２０６の受電側延出部６２には、外周面部６２ｃに巻回されたコイル２６５を備える。また、送電側基体２０７の送電側延出部７２には、内周面部７２ｄ側に巻回されたコイル２７５を備える。 As shown in FIG. 9, the power receiving side extension portion 62 of the power receiving side base 206 is provided with a coil 265 wound around the outer peripheral surface portion 62c. Further, the power transmission side extension portion 72 of the power transmission side base 207 is provided with a coil 275 wound around the inner peripheral surface portion 72d side.

コイル２６５の巻き数と、コイル２７５の巻き数とは同一になるようにそれぞれ巻回されている。
そして、受電側基体２０６が回転体２に固定され、送電側基体２０７が固定体３に固定されると、受電側基体２０６の受電側延出部６２が送電側基体２０７の送電側延出部７２の内周側ｄに配置され、径方向ｃｄにおいてコイル２６５とコイル２７５が対向した状態になる。 The number of turns of the coil 265 and the number of turns of the coil 275 are each wound so as to be the same.
Then, when the power receiving side base 206 is fixed to the rotating body 2 and the power transmitting side base 207 is fixed to the fixed body 3, the power receiving side extension portion 62 of the power receiving side base 206 becomes the power transmission side extension part of the power transmission side base 207. It is arranged on the inner peripheral side d of 72, and the coil 265 and the coil 275 are in a state of facing each other in the radial direction cd.

コイル２６５及びコイル２７５をこのような位置関係に配置することで、送電側基体２０７のコイル２７５に生じさせた磁界が受電側基体２０６のコイル２６５に作用し、コイル２６５に電流を生じさせる。本変形例の非接触給電装置によれば、適切なコイル配置によって、磁界結合方式による非接触給電装置を実現することができる。 By arranging the coil 265 and the coil 275 in such a positional relationship, the magnetic field generated in the coil 275 of the power transmitting side base 207 acts on the coil 265 of the power receiving side base 206 to generate a current in the coil 265. According to the non-contact power feeding device of this modification, a non-contact power feeding device by a magnetic field coupling method can be realized by an appropriate coil arrangement.

本変形例にかかる非接触給電装置は、受電側基体２０６は同軸上（本発明において、「同軸上」とは、軸を共通にするもの同士の関係をいう。）に巻回されたコイル２６５を備え、送電側基体２０７は同軸上に巻回されたコイル２７５を備え、径方向ｃｄにおいてコイル２６５とコイル２７５とが対向した状態になっている。これらコイル２６５とコイル２７５は、例えば回転体２の軸線ｘを共通の軸として、同軸上に巻回されている。よって、本変形例では不図示の回転体２が同不図示の固定体３に対して回転しても、受電側基体２０６と送電側基体２０７との相対的な位置関係がずれることが無いので、受電側基体２０６と送電側基体２０７との間の位置合わせをする必要が無い。さらに、回転体２と連れ回る受電側基体２０６が回転したままの状態でも、固定体３に固定された送電側基体２０７との相対的な位置関係が変化しない。そのため、制御基板６４を介してひずみゲージ４に効率良く非接触で電力を供給することができる。 In the non-contact power feeding device according to the present modification, the power receiving side base 206 is wound coaxially (in the present invention, "coaxially" means a relationship between devices having a common axis). The power transmission side base 207 is provided with a coil 275 wound coaxially, and the coil 265 and the coil 275 are in a state of facing each other in the radial cd. The coil 265 and the coil 275 are coaxially wound around, for example, the axis x of the rotating body 2 as a common axis. Therefore, in this modification, even if the rotating body 2 (not shown) rotates with respect to the fixed body 3 (not shown), the relative positional relationship between the power receiving side base 206 and the power transmitting side base 207 does not shift. , It is not necessary to align the power receiving side base 206 and the power transmitting side base 207. Further, even when the power receiving side base 206 that accompanies the rotating body 2 remains rotating, the relative positional relationship with the power transmitting side base 207 fixed to the fixed body 3 does not change. Therefore, electric power can be efficiently and non-contactly supplied to the strain gauge 4 via the control board 64.

以上、本発明の非接触給電装置について、好ましい実施形態及び変形例を挙げて説明したが、本発明の非接触給電装置は、上記実施形態や変形例の構成に限定されるものではない。例えば、上記実施形態の非接触給電装置１においては、帯状の導電体６５ａと帯状の導電体７５ａ、帯状の導電体６５ｂと帯状の導電体７５ｂと、で対を成す２組のコンデンサを形成する場合について説明したが、受電側基体と送電側基体にそれぞれ１つの帯状の導電体を設けて一対とすることにより、コンデンサを１組のみ形成してもよい。 Although the non-contact power feeding device of the present invention has been described with reference to preferred embodiments and modifications, the non-contact power feeding device of the present invention is not limited to the configurations of the above-described embodiments and modifications. For example, in the non-contact power feeding device 1 of the above embodiment, two sets of capacitors are formed by forming a band-shaped conductor 65a and a band-shaped conductor 75a, and a band-shaped conductor 65b and a band-shaped conductor 75b. Although the case has been described, only one set of capacitors may be formed by providing one band-shaped conductor on each of the power receiving side substrate and the power transmitting side substrate to form a pair.

この場合、例えば、回転体２を回転可能に支持する不図示の軸受を経由して導通させることで、電源の一端側を構成させることができ、給電用の電源回路が構成される。この場合の電源回路は、図６におけるコンデンサＣ２を除し、コンデンサＣ２が介在していた配線を直接接続（回路図上、単なる直線）にした状態になっている。なお、この場合は、軸受を介する側が接触状態となり、一般的な「非接触給電」の概念とは異なるが、本発明においては、給電する回路の少なくとも一方の配線が非接触となる電界結合共鳴方式であれば、「非接触給電」の概念に含まれるものとする。 In this case, for example, one end side of the power supply can be configured by conducting conduction via a bearing (not shown) that rotatably supports the rotating body 2, and a power supply circuit for power supply is configured. In this case, the power supply circuit is in a state in which the capacitor C2 in FIG. 6 is removed and the wiring in which the capacitor C2 is interposed is directly connected (simply a straight line on the circuit diagram). In this case, the side via the bearing is in a contact state, which is different from the general concept of "non-contact power supply", but in the present invention, at least one wiring of the power supply circuit is in a non-contact state. If it is a method, it shall be included in the concept of "contactless power supply".

また、上記実施形態の非接触給電装置１において、制御基板６４は、受電側環状部６１の上面部６１ａに取り付けられている場合について説明したが、本発明においてはこれに限定されるものではなく、例えば、受電側環状部６１の下側ｂの下面部に取り付けられていても構わない。 Further, in the non-contact power feeding device 1 of the above embodiment, the case where the control board 64 is attached to the upper surface portion 61a of the power receiving side annular portion 61 has been described, but the present invention is not limited to this. For example, it may be attached to the lower surface portion of the lower side b of the power receiving side annular portion 61.

また、上記実施形態や変形例においては、内側を回転体２、外側を固定体３とする例を挙げているが、本発明はこれに限定されるものではなく、図１における回転体２を固定体とし、図１における固定体３を回転体とする構成であっても構わない。この場合には、例えば、内側に配される固定体に送電側基体を取り付け、外側に配される回転体に受電側基体を取り付ければ、外側で回転する受電側基体に、内側で固定されている送電側基体から、非接触で電力を供給することができる。なお、この場合の送電側基体及び受電側基体、その他の構成としては、上記実施形態や変形例の構成をそのまま、あるいは、立場が入れ替わったこと等による修正を適宜加えて、適用すればよい。 Further, in the above-described embodiment and modification, an example in which the inner side is the rotating body 2 and the outer side is the fixed body 3 is given, but the present invention is not limited to this, and the rotating body 2 in FIG. 1 is used. A fixed body may be used, and the fixed body 3 in FIG. 1 may be a rotating body. In this case, for example, if the power transmission side base is attached to the fixed body arranged inside and the power receiving side base is attached to the rotating body arranged outside, the power receiving side base is fixed inside to the power receiving side base rotating on the outside. Power can be supplied non-contactly from the power transmission side substrate. In this case, the power transmission side base, the power reception side base, and other configurations may be applied as they are, or by appropriately modifying the configurations of the above-described embodiments and modifications.

さらに、本発明においては、必ずしも固定体に送電側基体を取り付けなければならないわけではない。外部電源からの給電であれば、上記実施形態や変形例のように固定体に送電側基体を取り付けることが有用であるが、例えば、回転体に何らかの発電装置を備える場合に、固定体に受電側基体を取り付け、回転体に送電側基体を取り付ける態様は有用である。この場合の送電側基体及び受電側基体、その他の構成としては、上記実施形態や変形例の構成をそのまま、あるいは、立場が入れ替わったこと等による修正を適宜加えて、適用すればよい。 Further, in the present invention, it is not always necessary to attach the power transmission side substrate to the fixed body. In the case of power supply from an external power source, it is useful to attach a power transmission side substrate to the fixed body as in the above embodiment or a modification. However, for example, when the rotating body is provided with some kind of power generation device, the fixed body receives power. It is useful to attach the side substrate and attach the power transmission side substrate to the rotating body. In this case, as the power transmission side base, the power reception side base, and other configurations, the configurations of the above-described embodiments and modifications may be applied as they are, or modified by changing positions, etc., as appropriate.

その他、当業者は、従来公知の知見に従い、本発明の非接触給電装置を適宜改変することができる。かかる改変によってもなお本発明の構成を具備する限り、勿論、本発明の範疇に含まれるものである。 In addition, those skilled in the art can appropriately modify the non-contact power feeding device of the present invention according to conventionally known knowledge. As long as the modification still has the constitution of the present invention, it is, of course, included in the category of the present invention.

１…非接触給電装置、２…回転体、２ｃ…外周面部、３…固定体、３ａ…上面部、３ｄ…内周面部、４…ひずみゲージ、６…受電側基体、７…送電側基体、８…固定部材、２１…凹部、２１ｂ…下端部、３１…孔部、３２…溝部、６０…孔部、６１…受電側環状部、６１ａ…上面部、６２…受電側延出部、６２ｃ…外周面部、６２ｄ…内周面部、６３…電子部品、６４…制御基板、６５ａ，６５ｂ…帯状の導電体、６６ａ，６６ｂ，６７ａ，６７ｂ…孔部、６８ａ，６８ｂ…リード線、６９ａ…突部、６９ｂ…切欠部、７０…孔部、７１…送電側環状部、７１ｂ…下面部、７２…送電側延出部、７２ｃ…外周面部、７２ｄ…内周面部、７４…制御基板、７５ａ，７５ｂ…帯状の導電体、７６ａ，７６ｂ…孔部、７８ａ，７８ｂ…リード線、７９…孔部、８１…頭部、８２…軸部、１０６…受電側基体、１０７…送電側基体、１６５ａ，１６５ｂ…帯状の導電体、１６８ａ，１６８ｂ…リード線、１７５ａ，１７５ｂ…帯状の導電体、１７６ａ，１７６ｂ…孔部、１７８ａ，１７８ｂ…リード線、１９１…環状部、１９１ｂ…下部、１９２…延出部、１９３…帯状部、１９３ａ…一端部、１９３ｂ…他端部、１９４…延出部、１９５…帯状部、１９５ａ…上部、１９６…突出部、１９７…環状部、１９７ａ…上部、１９８…延出部、１９９ａ…一端部、１９９ｂ…他端部、２０６…受電側基体、２０７…送電側基体、２６５，２７５…コイル 1 ... non-contact power feeding device, 2 ... rotating body, 2c ... outer peripheral surface part, 3 ... fixed body, 3a ... upper surface part, 3d ... inner peripheral surface part, 4 ... strain gauge, 6 ... power receiving side substrate, 7 ... transmitting side substrate, 8 ... Fixing member, 21 ... Recess, 21b ... Lower end, 31 ... Hole, 32 ... Groove, 60 ... Hole, 61 ... Power receiving side annular part, 61a ... Top surface, 62 ... Power receiving side extension, 62c ... Outer peripheral surface, 62d ... Inner peripheral surface, 63 ... Electronic components, 64 ... Control board, 65a, 65b ... Band-shaped conductors, 66a, 66b, 67a, 67b ... Holes, 68a, 68b ... Lead wires, 69a ... Protrusions , 69b ... Notch, 70 ... Hole, 71 ... Transmission side annular part, 71b ... Lower surface part, 72 ... Transmission side extension part, 72c ... Outer surface part, 72d ... Inner peripheral surface part, 74 ... Control board, 75a, 75b ... Band-shaped conductor, 76a, 76b ... Hole, 78a, 78b ... Lead wire, 79 ... Hole, 81 ... Head, 82 ... Shaft, 106 ... Power receiving side substrate, 107 ... Transmission side substrate, 165a, 165b ... Band-shaped conductors, 168a, 168b ... Lead wires, 175a, 175b ... Band-shaped conductors, 176a, 176b ... Holes, 178a, 178b ... Lead wires, 191 ... Ring, 191b ... Lower, 192 ... Extensions , 193 ... strip, 193a ... one end, 193b ... other end, 194 ... extension, 195 ... strip, 195a ... top, 196 ... protrusion, 197 ... annular, 197a ... top, 198 ... extension 199a ... One end, 199b ... The other end, 206 ... Power receiving side substrate, 207 ... Transmission side substrate, 265,275 ... Coil

Claims (12)

環状の受電側基体と、
環状の送電側基体と、を備え、
前記受電側基体及び前記送電側基体の一方が、回転体に設けられ、
前記受電側基体及び前記送電側基体の他方が、固定体に設けられ、
径方向において、前記受電側基体と前記送電側基体とが対向している、非接触給電装置。 An annular power receiving side substrate and
With an annular power transmission side substrate,
One of the power receiving side base and the power transmitting side base is provided on the rotating body, and the rotating body is provided.
The other of the power receiving side base and the power transmitting side base is provided on the fixed body, and the other is provided on the fixed body.
A non-contact power feeding device in which the power receiving side substrate and the power transmitting side substrate face each other in the radial direction. 前記受電側基体が前記回転体の外周面を囲んでおり、
前記送電側基体が前記固定体の内周面を囲んでいる、請求項１に記載の非接触給電装置。 The power receiving side substrate surrounds the outer peripheral surface of the rotating body, and the power receiving side substrate surrounds the outer peripheral surface of the rotating body.
The non-contact power feeding device according to claim 1, wherein the power transmission side substrate surrounds an inner peripheral surface of the fixed body. 前記受電側基体及び前記送電側基体は、それぞれ導電体を備える、請求項１又は２に記載の非接触給電装置。 The non-contact power feeding device according to claim 1 or 2, wherein the power receiving side substrate and the power transmitting side substrate each include a conductor. 前記受電側基体が備える導電体と、前記送電側基体が備える導電体と、で少なくとも一対のコンデンサを形成する、請求項３に記載の非接触給電装置。 The non-contact power feeding device according to claim 3, wherein at least a pair of capacitors are formed by the conductor included in the power receiving side substrate and the conductor included in the power transmitting side substrate. 前記一対のコンデンサを形成する導電体同士の面積が等しい、請求項４に記載の非接触給電装置。 The non-contact power feeding device according to claim 4, wherein the conductors forming the pair of capacitors have the same area. 前記受電側基体が備える導電体と、前記送電側基体が備える導電体が、それぞれ前記回転体の軸方向に複数並んでいる、請求項３乃至５のいずれか１項に記載の非接触給電装置。 The non-contact power feeding device according to any one of claims 3 to 5, wherein a plurality of conductors included in the power receiving side substrate and a plurality of conductors included in the power transmitting side substrate are arranged in the axial direction of the rotating body. .. 前記受電側基体が備える複数の導電体同士、及び、前記送電側基体が備える複数の導電体同士は、それぞれ面積が等しい、請求項６に記載の非接触給電装置。 The non-contact power feeding device according to claim 6, wherein the plurality of conductors included in the power receiving side substrate and the plurality of conductors included in the power transmitting side substrate have the same area. 前記受電側基体が備える導電体、及び、前記送電側基体が備える導電体が、導電性の薄膜で形成されている、請求項３乃至７のいずれか１項に記載の非接触給電装置。 The non-contact power feeding device according to any one of claims 3 to 7, wherein the conductor included in the power receiving side substrate and the conductor included in the power transmitting side substrate are formed of a conductive thin film. 前記回転体の外周面と前記受電側基体との間には電子部品が配置されている、請求項２に記載の非接触給電装置。 The non-contact power feeding device according to claim 2, wherein an electronic component is arranged between the outer peripheral surface of the rotating body and the power receiving side substrate. 前記受電側基体及び前記送電側基体は、それぞれ、同軸上に巻回されたコイルを備え、当該コイル同士が、径方向において対向している、請求項１又は２に記載の非接触給電装置。 The non-contact power feeding device according to claim 1 or 2, wherein the power receiving side substrate and the power transmitting side substrate each include coils wound coaxially, and the coils face each other in the radial direction. 前記受電側基体は、前記回転体の軸方向に対して交差する方向に延在する受電側環状部を介して前記回転体の外周面に固定されており、
前記送電側基体は、前記回転体の軸方向に対して交差する方向に延在する送電側環状部を介して前記固定体の内周面に固定されている、請求項２に記載の非接触給電装置。 The power receiving side substrate is fixed to the outer peripheral surface of the rotating body via a power receiving side annular portion extending in a direction intersecting the axial direction of the rotating body.
The non-contact according to claim 2, wherein the power transmission side substrate is fixed to the inner peripheral surface of the fixed body via a power transmission side annular portion extending in a direction intersecting the axial direction of the rotating body. Power supply device. 前記受電側環状部の面に、電子部品が取り付けられた基板が配置されている、請求項１１に記載の非接触給電装置。 The non-contact power feeding device according to claim 11, wherein a substrate on which an electronic component is attached is arranged on the surface of the power receiving side annular portion.
JP2019186708A 2019-10-10 2019-10-10 Non-contact power supply device Pending JP2021064985A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0896289A (en) * 1994-09-22 1996-04-12 Nec Corp Signal transmitter
WO2015108153A1 (en) * 2014-01-20 2015-07-23 日立オートモティブシステムズ株式会社 Non-contact power supply apparatus and torque sensor
JP2018064332A (en) * 2016-10-11 2018-04-19 Tdk株式会社 Rotary magnetic coupling device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0896289A (en) * 1994-09-22 1996-04-12 Nec Corp Signal transmitter
WO2015108153A1 (en) * 2014-01-20 2015-07-23 日立オートモティブシステムズ株式会社 Non-contact power supply apparatus and torque sensor
JP2018064332A (en) * 2016-10-11 2018-04-19 Tdk株式会社 Rotary magnetic coupling device

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