JP6454890B2 - Rotary connector - Google Patents
Rotary connector Download PDFInfo
- Publication number
- JP6454890B2 JP6454890B2 JP2015167247A JP2015167247A JP6454890B2 JP 6454890 B2 JP6454890 B2 JP 6454890B2 JP 2015167247 A JP2015167247 A JP 2015167247A JP 2015167247 A JP2015167247 A JP 2015167247A JP 6454890 B2 JP6454890 B2 JP 6454890B2
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- roller current
- rotary connector
- outer peripheral
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
Description
本発明は、内周面が円形である外周部材と、外周部材に対して相対的に回転自在であり、外周部材の中空部に前記内周面と同軸に配設される軸体と、外周部材及び軸体間に、半径方向の弾性変形を伴い回転自在に配設される薄肉円筒形状のローラ集電子とを備え、このローラ集電子を介して、外周部材及び軸体を電気的に接続するロータリーコネクタに関する。 The present invention includes an outer peripheral member having a circular inner peripheral surface, a shaft that is relatively rotatable with respect to the outer peripheral member, and that is disposed coaxially with the inner peripheral surface in a hollow portion of the outer peripheral member; A thin-cylindrical roller current collector that is rotatably disposed with elastic deformation in the radial direction between the member and the shaft body, and the outer peripheral member and the shaft body are electrically connected via the roller current collector. It relates to a rotary connector.
相対的に回転する部材同士を電気的に接続し、これらの間で電流を送給するための構造として、ローラ集電子型のロータリーコネクタが考案されている。 As a structure for electrically connecting relatively rotating members and supplying a current between them, a roller-collector type rotary connector has been devised.
ローラ集電子型ロータリーコネクタでは、外周部材と軸体が相対的に回転運動すると、薄肉円筒形状のローラ集電子は外周部材と軸体間の円環状空間で自転しながら公転運動する、いわゆる遊星運動を行う。ローラ集電子の材質はバネ性を備えた通電能力の高い材料、たとえばベリリウム銅、リン青銅が考えられる。
しかしながら前述のロータリーコネクタに於いても例えば５，０００ｒｐｍ．程度の高速回転ではローラ集電子が転動軌道から外れる、またはローラ集電子が破損するなどの問題があった。In the roller-collector type rotary connector, when the outer peripheral member and the shaft are relatively rotated, the thin-walled cylindrical roller collector revolves while rotating in an annular space between the outer member and the shaft. I do. As the material for the roller current collector, a material having a spring property and high current-carrying ability, such as beryllium copper and phosphor bronze, can be considered.
However, even in the above-described rotary connector, for example, 5,000 rpm. At such a high speed rotation, there is a problem that the roller current collector is out of the rolling track or the roller current collector is damaged.
そのため、特許文献１のように、ローラ集電子を単純な薄肉の円筒形状ではなく、ローラ集電子軸方向中心位置を大径部とし、ローラ集電子両端部を小径部とし、大径部から小径部にかけて傾斜した形状を有する異径形状のローラ集電子とし、つまり、中心部が肉厚く、両端部が肉薄く異径形状のローラ集電子とし、このローラ集電子の外周形状に沿うよう形成され前記ローラ集電子と電気的に接触する内周面を有する外周部材、また同様にローラ集電子の外周形状に沿うよう形成され前記ローラ集電子と電気的に接触する外周面を有する軸体とにより構成されたことを特徴とするロータリーコネクタが考案されている。 Therefore, as in
前述異径形状のローラ集電子を使用したロータリーコネクタでは、回転時のローラ集電子の転動軌道が安定し、より高速回転が可能となり、長寿命の製品を達成している。 In the rotary connector using the roller current collectors having different diameters, the rolling current of the roller current collectors during the rotation is stable, the rotation is possible at a higher speed, and a long-life product is achieved.
ローラ集電子の転動軌道をより安定させるため、ローラ集電子の外周の傾斜角を大きくすることが考えられるが、ローラ集電子の軸方向の長さを一定とした場合、傾斜角を大きくするとローラ集電子の軸方向中心付近はその両端部と比べると３倍以上の肉厚となり、ローラ集電子を弾性変形させるために必要なエネルギーが増加し、スムーズな回転がえられず、また短時間で集電子が破損するなどの問題があった。
そのため、よりスムーズな回転が得られ、磨耗の少ない長寿命のロータリーコネクタを得ることを目的としている。In order to further stabilize the rolling trajectory of the roller current collector, it is conceivable to increase the inclination angle of the outer periphery of the roller current collector. However, if the length of the roller current collector in the axial direction is constant, Near the center of the roller current collector in the axial direction, the wall thickness is more than three times that of both ends, increasing the energy required to elastically deform the roller current collector, preventing smooth rotation, and shortening the time. There were problems such as damage to the current collector.
Therefore, an object is to obtain a long-life rotary connector that can be rotated more smoothly and has less wear.
本発明は、上記の課題を解決するために、下記のロータリーコネクタを提供するものである。
（１）内周面が円形である外周部材と、前記外周部材に対して相対的に回転自在であり、前記外周部材の中空部に前記内周面と同軸に配設される軸体と、前記外周部材及び前記軸体間で半径方向に弾性変形しながら遊星運動するよう回転自在に配設される中空部を有するローラ集電子とを備え、前記ローラ集電子を介して、前記外周部材及び前記軸体を電気的に接続するコネクタにあって、前記ローラ集電子は、異なる直径を持つ異径形状で、なおかつその肉厚が一様で１０μｍから１００μｍの範囲であることを特徴とするロータリーコネクタ。
（２）ローラ集電子の外周面の直径がその両端部が中央部に比して小径、又は両端部が中央部に比して大径となっており、その小径部と大径部との間は連続的に変化する面で構成されている（１）に記載のロータリーコネクタ。
（３）前記ローラ集電子の外周形状が、前記ローラ集電子の軸方向中心部において大径部を１箇所持ち、この大径部を頂点とした傾斜部が、前記ローラ集電子両端部の前記小径部にかけて形成されていることを特徴とする（１）に記載のロータリーコネクタ。
（４）前記ローラ集電子の外周形状が、前記ローラ集電子の軸方向両端部において大径部となり、この大径部を頂点とした傾斜部が、前記ローラ集電子の軸方向中心部に設けられた小径部にかけて形成されていることを特徴とする（１）に記載のロータリーコネクタ。
（５）前記ローラ集電子の材質をニッケルとすることを特徴とする（１）に記載のロータリーコネクタ。In order to solve the above problems, the present invention provides the following rotary connector.
(1) An outer peripheral member having an inner peripheral surface that is circular, a shaft that is relatively rotatable with respect to the outer peripheral member, and that is disposed coaxially with the inner peripheral surface in a hollow portion of the outer peripheral member; A roller current collector having a hollow portion rotatably disposed so as to perform planetary movement while elastically deforming in a radial direction between the outer circumferential member and the shaft body, and the outer circumferential member and A rotary electrical connector for electrically connecting the shafts, wherein the roller current collector has a different diameter with different diameters and a uniform wall thickness ranging from 10 μm to 100 μm. connector.
(2) The diameter of the outer peripheral surface of the roller current collector has a smaller diameter at both ends than the center, or both ends have a larger diameter than the center. The rotary connector according to (1), which is configured with a continuously changing surface.
(3) The outer peripheral shape of the roller current collector has one large-diameter portion at the axial center portion of the roller current collector, and the inclined portions having the large-diameter portions as apexes are the end portions of the roller current collector The rotary connector according to (1), wherein the rotary connector is formed over a small diameter portion.
(4) The outer peripheral shape of the roller current collector is a large diameter portion at both axial end portions of the roller current collector, and an inclined portion having the large diameter portion as a vertex is provided at the axial center portion of the roller current collector. The rotary connector according to (1), wherein the rotary connector is formed over a small diameter portion.
(5) The rotary connector according to (1), wherein the roller current collector is made of nickel.
本発明によればローラ集電子の傾斜角を大きくすることでローラ集電子の転動軌道が安定し、従来製品より高速回転が可能となる。またローラ集電子の肉厚を一様な薄肉とすることで、ローラ集電子を弾性変形させるのに必要なエネルギーが減少するため、よりスムーズな回転が得られ、磨耗の少ない長寿命のロータリーコネクタが達成される。 According to the present invention, by increasing the inclination angle of the roller current collector, the rolling trajectory of the roller current collector is stabilized and can be rotated at a higher speed than the conventional product. In addition, the thickness of the roller current collector is made uniform and the energy required to elastically deform the roller current collector is reduced, resulting in a smoother rotation and a long-life rotary connector with less wear. Is achieved.
以下、本発明の実施の形態を図に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
従来ローラ集電子は、ベリリウム銅の切削加工により製作し、図３に示すようにローラ集電子軸方向中心位置から上下に４度傾斜した形状であり、加工後、ローラ集電子外周面には銀めっきを施している。ローラ集電子肉厚の最も薄い箇所は図３に示す端面ｔであり、その厚さは０．１３ｍｍ程度であり、これ以上肉厚を薄くすることは切削加工では困難であった。 Conventional roller current collectors are manufactured by cutting beryllium copper, and as shown in FIG. 3, have a shape inclined up and down by 4 degrees from the central position in the roller current collector axis direction. It is plated. The thinnest part of the roller current collector thickness is the end face t shown in FIG. 3, and the thickness is about 0.13 mm. It is difficult to reduce the thickness further by cutting.
そこでローラ集電子の製造方法を電気鋳造にすることで肉厚を１０μｍ〜１００μｍ程度の均一な薄肉とすることが可能となり、また図４に示すローラ集電子の傾斜角度θを現状の４度から８度〜１２度程度とすることで転動軌道を安定化することが可能となる。また、弾性力と復元力との点でその肉厚（図４のｍ）は５５μｍ〜７５μｍ程度が好ましい。 Therefore, the thickness of the roller current collector can be reduced to about 10 μm to 100 μm by electrocasting the roller current collector, and the inclination angle θ of the roller current collector shown in FIG. The rolling trajectory can be stabilized by setting the angle to about 8 to 12 degrees. The thickness (m in FIG. 4) is preferably about 55 to 75 μm in terms of elastic force and restoring force.
ここで電気鋳造とはめっき技術の一種であり、原型に金属イオンを電着させた後、原型から電着層を剥離する製造方法である。また、炭素材料、セラミック材料または有機材料等の非金属の粒子を電気鋳造層中に分散させてもよい。炭素材料としては、カーボンブラック、フラーレン、カーボンナノチューブ、セラミック材料としては、窒化ホウ素、チタンホウ化物、有機材料としてはフッ素樹脂、ポリイミド樹脂など特に耐熱性のある材料が使用できる。特に炭素材料は、導電性、摺動性の点で好ましい。 Here, electrocasting is a kind of plating technique, and is a manufacturing method in which metal ions are electrodeposited on a prototype and then the electrodeposition layer is peeled off from the prototype. Further, non-metallic particles such as a carbon material, a ceramic material, or an organic material may be dispersed in the electroformed layer. Carbon black, fullerene, carbon nanotubes can be used as the carbon material, boron nitride and titanium boride can be used as the ceramic material, and a heat-resistant material such as fluororesin and polyimide resin can be used as the organic material. In particular, a carbon material is preferable in terms of conductivity and slidability.
通常の電気鋳造では原型に金属イオンを電着させた後、電着層から原型を引き抜くため図４に示す形状では原型を引き抜くことができないが、原型を複数の部品で構成することにより図４の形状とすることが可能である。 In normal electroforming, after the metal ions are electrodeposited on the original mold, the original mold is pulled out from the electrodeposition layer. Therefore, the original mold cannot be extracted with the shape shown in FIG. 4, but the original mold is constituted by a plurality of parts. It is possible to have a shape of
さらにローラ集電子材質を現状のベリリウム銅からニッケルに変更することにより、転動時のすべりでローラ集電子外周面に施した銀めっきが剥離した際にもニッケルが露出することになり、ベリリウム銅の露出では酸化皮膜が生成されていた状況においても酸化皮膜の生成が抑制され、接触抵抗の増加、ノイズの発生を抑え、さらに長寿命の製品とすることが可能となる。ここでいうニッケルとは、ニッケルに鉄、銅、銀、金などの金属または非金属の分散物等を含んだまたは積層した場合も含まれる。 Furthermore, by changing the current collector material from beryllium copper to nickel, nickel is exposed when the silver plating applied to the outer surface of the roller collector is peeled off due to sliding during rolling. Even in the situation where an oxide film has been generated with the exposure of, the generation of the oxide film is suppressed, the increase in contact resistance and the generation of noise can be suppressed, and a product with a longer life can be obtained. The term “nickel” as used herein includes a case in which nickel or a metal such as iron, copper, silver, or gold, or a non-metallic dispersion is included or laminated.
１…ローラ集電子
２…外周部材
３…軸体DESCRIPTION OF
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015167247A JP6454890B2 (en) | 2015-08-10 | 2015-08-10 | Rotary connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015167247A JP6454890B2 (en) | 2015-08-10 | 2015-08-10 | Rotary connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017037827A JP2017037827A (en) | 2017-02-16 |
| JP6454890B2 true JP6454890B2 (en) | 2019-01-23 |
Family
ID=58049425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015167247A Expired - Fee Related JP6454890B2 (en) | 2015-08-10 | 2015-08-10 | Rotary connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6454890B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3587154A (en) * | 1969-04-01 | 1971-06-28 | Textron Inc | Hollow bearing balls |
| JPS4887234A (en) * | 1972-02-25 | 1973-11-16 | ||
| DE102004053936A1 (en) * | 2004-11-09 | 2006-05-11 | Fag Kugelfischer Ag & Co. Ohg | Radial roller bearings, in particular cylindrical or needle roller bearings |
| JP2007285397A (en) * | 2006-04-17 | 2007-11-01 | Press Kogyo Co Ltd | Roller bearing |
| JP2014229601A (en) * | 2013-05-24 | 2014-12-08 | 株式会社ヒサワ技研 | Rotary connector using irregular shape roller current collector |
-
2015
- 2015-08-10 JP JP2015167247A patent/JP6454890B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017037827A (en) | 2017-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5923114A (en) | Brushless slip ring using rolling elements as electrical conductors | |
| JP5311652B2 (en) | Ballpoint pen tip | |
| US20170369012A1 (en) | Grounding of a shaft | |
| JP6454890B2 (en) | Rotary connector | |
| US8073362B2 (en) | Photosensitive body having electrical connection arrangement | |
| US7215045B1 (en) | Roll-ring conductive wheel | |
| JP5790885B2 (en) | Contact member and electric motor | |
| JP6618757B2 (en) | Fluid dynamic bearing | |
| JP2009216174A (en) | Oil-impregnated sintered bearing | |
| JP2007321966A (en) | Fluid bearing device | |
| JP4686353B2 (en) | Motor with gas dynamic pressure bearing | |
| JP6914712B2 (en) | Tapered roller bearing | |
| JP2014229601A (en) | Rotary connector using irregular shape roller current collector | |
| JP2014143155A (en) | Spiral current collector | |
| US10158269B1 (en) | Electric motor and heat sink apparatus using the same | |
| JP5853313B2 (en) | Rotary connector | |
| JP2007205491A (en) | Bearing device for fan motor | |
| JP2004273406A (en) | Method of current collection without slippage | |
| TWI323318B (en) | Dynamic bearing structure and cooling fan employing the dynamic bearing structure | |
| JP2014154540A (en) | Shaft body having spiral protrusion | |
| CN210344037U (en) | Improved bearing without fixed sleeve | |
| JP6059096B2 (en) | Electrical connector and electrical connector terminals | |
| JP2008208928A (en) | Rolling bearing | |
| JP2018025213A (en) | Continuous body bearing | |
| TW202121779A (en) | Electric slip ring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180312 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180312 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20181012 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20181120 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20181121 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6454890 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |