WO2019039085A1 - スリップリング装置 - Google Patents

スリップリング装置 Download PDF

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Publication number
WO2019039085A1
WO2019039085A1 PCT/JP2018/024720 JP2018024720W WO2019039085A1 WO 2019039085 A1 WO2019039085 A1 WO 2019039085A1 JP 2018024720 W JP2018024720 W JP 2018024720W WO 2019039085 A1 WO2019039085 A1 WO 2019039085A1
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WO
WIPO (PCT)
Prior art keywords
main body
bearing
contact
ring
attached
Prior art date
Application number
PCT/JP2018/024720
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
一彦 熊井戸
一人 久本
三浦　伸行
齋藤　篤
大知 佐々木
Original Assignee
日本電産コパル電子株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本電産コパル電子株式会社 filed Critical 日本電産コパル電子株式会社
Priority to CN201880053760.5A priority Critical patent/CN110998993B/zh
Publication of WO2019039085A1 publication Critical patent/WO2019039085A1/ja

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters

Definitions

  • Embodiments of the present invention relate to a slip ring device capable of making an electrical connection, for example, between a fixed part and a rotating shaft.
  • a slip ring device applied to a rotary joint is provided with a plurality of conductive contact rings (hereinafter referred to as rings) provided on a rotary shaft, and is provided on a fixed portion and is respectively contacted with the rings of the rotary shaft
  • rings conductive contact rings
  • a plurality of conductive contacts are provided, and it is possible to transmit an electrical signal or a power source between the fixed portion and the rotating shaft (see, for example, Patent Documents 1 to 6).
  • the rotary shaft of the slip ring device applied to an amusement apparatus includes a plurality of conductive conductive rings with which a plurality of contacts are in contact, and a spacer or the like provided between the rings for insulating the rings.
  • Each ring is connected to a wire arranged inside the rotation shaft.
  • the rotating shaft needs to be provided with a bearing in order to improve the rotational accuracy.
  • Embodiments of the present invention provide a slip ring device that can easily attach a bearing to a rotating shaft having many parts.
  • the slip ring device includes a rotary shaft having a cylindrical main body provided with a slit along an axial center from one end side to the other end side, and conductivity attached to the outside of the main body.
  • a ring having contacts, contacts in contact with the rings, a bearing attached to the exterior of the body at the other end of the body, and an interior of the body at the other end of the body
  • a cap having a sleeve attached to the interior of the body, the outer diameter of the sleeve being greater than the inner diameter of the body.
  • Embodiments of the present invention can provide a slip ring device that can easily attach a bearing to a rotating shaft having many parts.
  • FIG. 3 is an exploded cross-sectional view of a part of the rotation shaft shown in FIG. 2;
  • FIG. 6 is a cross-sectional view showing the assembled state of FIG. 5;
  • FIG. 4 is a top view of the contact shown in FIG. 3;
  • the side view of FIG. 8B Sectional drawing along the dd line of FIG. 8A. The figure shown in order to demonstrate the contact pressure of a contactor.
  • FIG. 1 and 2 show a rotary joint RJ having a slip ring device according to the present embodiment.
  • the rotary joint RJ includes a case (housing) 10 as a fixed portion, a first cover 11, a second cover 12, a third cover 13, and a rotating shaft 14 rotatable with respect to the case 10. And so on.
  • the case 10 has a first opening 10a at the side, a second opening 10b at the bottom, and a third opening 10c at the top.
  • a print substrate 15 is provided to cover the first opening 10 a of the case 10.
  • the print substrate 15 has a first surface and a second surface parallel to the first surface.
  • a plurality of contacts 16 described later are provided on the first surface, and a connector 17 electrically connected to the plurality of contacts 16 is provided on the second surface.
  • 14 contacts 16 are disposed on the print substrate 15. Specifically, seven contacts 16 are arranged in two rows at a predetermined interval in the diametrical direction of the rotary shaft 14, and for example, seven pairs of contacts 16 are spaced in the axial direction of the rotary shaft 14 at a predetermined interval. Be placed. A pair of contacts 16 arranged in the diametrical direction of the rotating shaft 14 are brought into contact with a conductive ring 22 described later to constitute a slip ring device. The number of contacts 16 is not limited to fourteen and can be varied.
  • the first cover 11 is fixed to the side surface of the case 10 by the screws 18 a and 18 b in a state in which the print substrate 15 is provided in the first opening 10 a.
  • the first cover 11 has an opening 11 a, and the opening 11 a exposes the connector 17 provided on the print substrate 15.
  • the rotating shaft 14 is provided with a first bearing 20 at one end and a second bearing 21 at the other end.
  • a plurality of rings 22 are attached to the rotating shaft 14 between the first bearing 20 and the second bearing 21.
  • Each of the rings 22 is electrically connected to one of a plurality of wires 23 disposed inside the rotating shaft 14 as described later.
  • the rotation shaft 14 is provided in the case 10 from the first opening 10 a and the second opening 10 b, and one end thereof is inserted into the third opening 10 c and protrudes outside the case 10.
  • the second cover 12 is provided so as to cover the second opening 10b of the case 10, and is fixed to the case 10 by screws 19a, 19b, 19c.
  • the second cover 12 has a ring-shaped holding portion 12a at the central portion, and the second bearing 21 provided at the other end of the rotating shaft 14 is held in the holding portion 12a.
  • the third cover 13 has an opening 13a at the center. In a state in which the rotation shaft 14 is provided in the case 10, the third cover 13 is attached to the case 10 so as to cover the third opening 10c. One end of the rotation shaft 14 is inserted into the opening 13a of the third cover 13, and the third cover 13 is fixed to the case 10 by screws 24a, 24b, and 24c.
  • FIG. 3 schematically shows the rotation axis 14.
  • the rotating shaft 14 has a cylindrical main body 14 a.
  • the main body 14a has a flange 14b at one end, and a pair of slits 14c from the vicinity of the flange 14b to the other end. That is, the slit 14c is provided along the axial direction of the main body 14a.
  • the slit 14c separates the other end of the main body 14a into a first portion 14a-1 and a second portion 14a-2, and the first portion 14a-1 and the second portion 14a-2 mutually It is possible to bend in the approaching direction and in the separating direction.
  • the number of slits 14c is not limited to two, and may be one or three or more.
  • the first bearing 20, the plurality of spacers 25, the plurality of rings 22, the spacer 26, and the second bearing 20 described above are mounted from the flange 14b to the other end of the main body 14a.
  • the plurality of spacers 25 and the spacers 26 are made of an insulating material, such as plastic, and the plurality of rings 22 are made of a conductive metal.
  • the number of rings 22 is seven in the case of this embodiment, but is not limited to this and can be modified.
  • the first bearing 20 is, for example, a radial bearing, and includes an inner ring 20a, an outer ring 20b, and a plurality of steel balls 20c (shown in FIG. 4) provided between the inner ring 20a and the outer ring 20b.
  • the inner ring 20 a is abutted on the outer surface of the rotary shaft 14 and the flange 14 b.
  • the outer ring 20 b is, for example, pressure-welded to the inner surface of the third opening 10 c of the case 10.
  • the first bearing 20 is not limited to a radial bearing, and it is also possible to apply another bearing having an inner ring and an outer ring. Moreover, the attachment method of the 1st bearing 20 is not limited to this, It can deform
  • Each spacer 25 has a flange 25a and a sleeve 25b.
  • the diameter of the sleeve 25 b is smaller than the diameter of the ring 22 and larger than the diameter of the main body 14 a of the rotating shaft 14.
  • the sleeve 25 b is disposed between the ring 22 and the main body 14 a of the rotary shaft 14 in a state where the spacer 25 is attached to the main body 14 a of the rotary shaft 14.
  • the flange 25 a is located between two adjacent rings 22 and insulates the two rings 22.
  • the ring 22 has a substantially L-shaped projection 22 a inside.
  • the ring 22 is mounted to the body 14a such that the projection 22a is located within the slit 14c of the body 14a.
  • the projections 22a of the adjacent rings 22 are mounted on the main body 14a such that they are alternately arranged in the two slits 14c of the main body 14a. This configuration prevents rotation of each ring 22 relative to the body 14a, and each ring 22 is rotated with the body 14a.
  • each ring 22 is located in the internal space of the main body 14 a, and one of the plurality of wires 23 is connected to the protrusion 22 a of each ring 22.
  • one of the wires 23 is connected to the projection 22a of each ring 22 in advance, and the ring 22 is attached to the body 14a in a state where the wire 23 is inserted into the internal space of the body 14a.
  • the spacer 26 includes a pair of projections 26a which are engaged with the slits 14c of the main body 14a.
  • the spacer 26 is attached to the main body 14 a in a state in which the plurality of rings 22 and the plurality of spacers 25 are attached to the main body 14 a.
  • the second bearing 21 includes an inner ring 21a, an outer ring 21b, and a plurality of steel balls 21c (shown in FIG. 4) provided between the inner ring 21a and the outer ring 21b. There is.
  • the second bearing 21 is attached to the other end of the main body 14 a of the rotating shaft 14.
  • the inner diameter of the second bearing 21 is slightly larger than the outer diameter of the main body 14a.
  • the second bearing 21 can be made of the main body 14a. It can be easily attached to the outside.
  • the cap 27 is press-fit into the inside of the other end of the main body 14a.
  • the cap 27 is made of, for example, plastic, and has a sleeve 27a and a flange 27b.
  • the outer diameter D1 of one end portion (tip portion) of the sleeve 27a is smaller than the inner diameter D3 of the main body 14a of the rotary shaft 14. Therefore, one end of the sleeve 27a can be easily inserted into the main body 14a.
  • the outer diameter D2 of the other end of the sleeve 27a is the sum of the inner diameter D3 of the main body 14a and twice the difference D4 between the outer diameter of the main body 14a and the inner diameter of the second bearing 21 (inner diameter of the inner ring 21a). Greater than. That is, the outer diameter D2 of the other end of the sleeve 27a is as follows.
  • the difference between the outer diameter D2 of the sleeve 27a and the inner diameter D3 of the main body 14a is larger than the difference 2D4 between the inner diameter of the second bearing 21 and the outer diameter of the main body 14a.
  • the rotary shaft 14 configured as described above mounted in the inside of the case 10, the rotary shaft 14 is rotatably held relative to the case 10 by the first bearing 20 and the second bearing 21.
  • a plurality of contacts 16 provided on the print substrate 15 are in contact with one ring 22 two by two.
  • Each of the rings 22 is coated with, for example, a conductive grease 28 as a lubricant, and the grease 28 keeps the contact between the ring 22 and the contact 16 stable.
  • 8A, 8B, 8C, and 8D show the contact 16.
  • the contact 16 has a terminal 16a and a terminal 16b at one end.
  • the terminals 16 a and the terminals 16 b are inserted into the through holes of the print substrate 15.
  • the contact 16 may be placed at a right angle to the surface of the print substrate 15. It is possible.
  • the other end of the contact 16 is separated into a plurality of contact portions 16 c by, for example, a plurality of slits, and a brush is formed.
  • the tip of the contact portion 16c is inclined, for example, by about 20 °, so that each of the plurality of contacts 16 arranged on the print substrate 15 can easily contact each ring 22 when assembled. It has been
  • both sides in the width direction of the plurality of contact portions 16c are curved in a direction away from the ring 22. Therefore, as the ring 22 rotates, the grease 28 can easily enter between the contact portions 16 c and the ring 22. Therefore, it is possible to maintain the stability of the contact between each contact portion 16c and the ring 22.
  • FIG. 9 shows the relationship between the pair of contacts 16 and the ring 22. In order to keep the contact between the ring 22 and the contact 16 stable, it is important to secure sufficient contact pressure of the contact 16 with the ring 22.
  • an appropriate contact pressure of the contact 16 to the ring 22 can be set.
  • One end of the pair of contacts 16 is provided on the print substrate 15, and the contact portion 16 c is in contact with the ring 22.
  • the distance between the one ends of the pair of contacts 16 provided on the print substrate 15 is W1
  • the distance from the surface of the print substrate 15 to the contact C at which the ring 22 contacts the contacts 16 is L
  • W2 be the mutual distance between the contacts C
  • ⁇ be the angle between two tangents passing through the two contacts C, and change the distances W1, W2, and L so that noise does not occur in less than 50 million revolutions, for example
  • the ideal contact pressure range obtained by experiment under the condition of is 7.56 gf to 22.84 gf.
  • the relationship between the distances W1, W2, and L for obtaining the contact pressure range of 7.56 gf to 22.84 gf is as follows.
  • W 1 2 mm to 7 mm
  • W2 9.19 mm to 9.89 mm
  • L 10.44 mm to 11.66 mm ⁇ : 17.01 ° to 46.2 °
  • the width of the contact 16 is, for example, 1.6 mm
  • the thickness is, for example, 0.1 mm.
  • the main body 14a of the rotary shaft 14 has a pair of slits 14c, and the other end of the main body 14a is divided into a first portion 14a-1 and a second portion 14a-2, The first portion 14a-1 and the second portion 14a-2 can be flexed.
  • the first portion 14a-1 and the second portion 14a-2 of the main body 14a are The second bearing 21 can be easily attached to the other end of the main body 14a by bending so as to approach.
  • the sleeve 27a of the cap 27 is press-fitted to the other end of the main body 14a, whereby the first portion 14a-1 of the main body 14a and the second portion The part 14a-2 can be pushed apart and the main body 14a can be fastened to the second bearing 21. Therefore, the second bearing 21 can be fastened to the rotary shaft 14 on which a plurality of parts are mounted without using an adhesive or the like. Therefore, the assembly operation can be facilitated.
  • the present invention is not limited to the above embodiments as it is, and at the implementation stage, the constituent elements can be modified and embodied without departing from the scope of the invention.
  • various inventions can be formed by appropriate combinations of a plurality of components disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, components in different embodiments may be combined as appropriate.
  • the slip ring device of the present invention can be applied to, for example, a rotary joint.
  • RJ ... rotary joint, 10 ... case (fixed part), 14 ... rotating shaft, 14a ... main body, 14a-1 ... first part, 14a-2 ... second part, 16 ... contactor, 20 ... first bearing , 21 ... second bearing, 22 ... ring, 27 ... cap.

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  • Rolling Contact Bearings (AREA)
PCT/JP2018/024720 2017-08-24 2018-06-28 スリップリング装置 WO2019039085A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880053760.5A CN110998993B (zh) 2017-08-24 2018-06-28 滑环装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-161460 2017-08-24
JP2017161460A JP6887914B2 (ja) 2017-08-24 2017-08-24 スリップリング装置

Publications (1)

Publication Number Publication Date
WO2019039085A1 true WO2019039085A1 (ja) 2019-02-28

Family

ID=65439407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/024720 WO2019039085A1 (ja) 2017-08-24 2018-06-28 スリップリング装置

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Country Link
JP (1) JP6887914B2 (zh)
CN (1) CN110998993B (zh)
WO (1) WO2019039085A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312352U (zh) * 1976-07-14 1978-02-01
US20040121622A1 (en) * 2002-12-20 2004-06-24 Abouchar John W. Slip ring with connector pins
JP2011172403A (ja) * 2010-02-19 2011-09-01 Nidec Copal Electronics Corp モータ付スリップリング
JP2012099376A (ja) * 2010-11-04 2012-05-24 Nidec Servo Corp スリップリング装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043621A (en) * 1975-04-02 1977-08-23 Heinz Richard A Replaceable slip ring rotor
DE10324708A1 (de) * 2003-05-30 2004-12-16 Ltn Servotechnik Gmbh Schleifringelement und Verfahren zu dessen Herstellung
CN201518380U (zh) * 2009-09-22 2010-06-30 蔡益军 一种滑环
CN103199402B (zh) * 2012-01-05 2015-07-22 隆环企业有限公司 简易组合式集电环
CN203871622U (zh) * 2014-03-27 2014-10-08 北京航天控制仪器研究所 一种多环数微型惯性平台滑环导电装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312352U (zh) * 1976-07-14 1978-02-01
US20040121622A1 (en) * 2002-12-20 2004-06-24 Abouchar John W. Slip ring with connector pins
JP2011172403A (ja) * 2010-02-19 2011-09-01 Nidec Copal Electronics Corp モータ付スリップリング
JP2012099376A (ja) * 2010-11-04 2012-05-24 Nidec Servo Corp スリップリング装置

Also Published As

Publication number Publication date
CN110998993B (zh) 2021-08-10
JP6887914B2 (ja) 2021-06-16
CN110998993A (zh) 2020-04-10
JP2019040736A (ja) 2019-03-14

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