EP3193409A1 - Connecteur rotatif - Google Patents

Connecteur rotatif Download PDF

Info

Publication number
EP3193409A1
EP3193409A1 EP17150092.9A EP17150092A EP3193409A1 EP 3193409 A1 EP3193409 A1 EP 3193409A1 EP 17150092 A EP17150092 A EP 17150092A EP 3193409 A1 EP3193409 A1 EP 3193409A1
Authority
EP
European Patent Office
Prior art keywords
movable
side housing
rotary connector
fixed
connector
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.)
Granted
Application number
EP17150092.9A
Other languages
German (de)
English (en)
Other versions
EP3193409B1 (fr
Inventor
Yuki HIRAO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of EP3193409A1 publication Critical patent/EP3193409A1/fr
Application granted granted Critical
Publication of EP3193409B1 publication Critical patent/EP3193409B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
    • H01R35/02—Flexible line connectors without frictional contact members
    • H01R35/025—Flexible line connectors without frictional contact members having a flexible conductor wound around a rotation axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the present invention relates to a rotary connector for transmitting an electric signal between a fixed-side housing and a movable-side housing, and particularly, to a rotary connector having waterproofing measures for preventing water from entering the inside of the rotary connector.
  • a rotary connector in known, which electrically connects an electric device provided on a steering wheel side and an electric device provided on a vehicle body side.
  • the rotary connector includes a fixed-side housing which is attached to the vehicle body side, a movable-side housing which is assembled to a steering shaft to be rotatable with respect to the fixed-side housing, and a cable which is accommodated in an annular space portion formed between the housings and electrically connects connector portions provided in the housings to each other.
  • the rotary connector having the above-described configuration is used as electrical connection means of an airbag system mounted on a steering wheel of an automobile, a horn circuit, various operation switches, or the like.
  • Japanese Unexamined Patent Application Publication No. 2007-220505 discloses a technology in which dust-proofing measures are provided in a rotary connector.
  • a dust-proofing ring plate is disposed to come into close-contact with an outer circumferential surface of a rotary tube attached to a rotary cover and an inner circumferential edge of a hole portion of a bottom cover attached to the fixed cover, and dust, abrasion powder, grease, or the like is prevented from entering the inside of the rotary connector from a portion between the rotary tube and the bottom cover.
  • the rotary connector is used so that a metal steering shaft disposed in a vehicle cabin is inserted into a movable-side housing of the rotary connector and a fixed-side housing thereof is mounted on the vehicle body side.
  • condensation is generated in the steering shaft. If condensation is generated in the steering shaft, for example, condensed water falls on the surface of the movable-side housing from a fitted portion between the steering shaft and the movable-side housing, and the condensed water is easily collected in the surface of the movable-side housing.
  • the condensed water If the condensed water is collected in the upper surface of the movable-side housing, the condensed water enters the inside of the rotary connector from a hole formed on the upper surface of the movable-side housing or the like and reaches the connection portion between the cable and the connector portion incorporated into the inside of the rotary connector, and there is a concern that an electric circuit is short-circuited.
  • the present invention provides a rotary connector in which even in a case where water falls on a surface of a movable-side housing, the water can be discharged to the outside of the movable-side housing before the fallen water is collected in the surface of the movable-side housing, and it is possible to prevent water from entering the inside of the rotary connector.
  • a rotary connector including: an annular fixed-side housing; an annular movable-side housing which is rotatably assembled relative to the fixed-side housing and in which a steering shaft is inserted into a center portion of the annular movable-side housing; and a cable which is incorporated into an annular space formed between the fixed-side housing and the movable-side housing and is configured to electrically connect a fixed-side connector portion provided in the fixed-side housing and a movable-side connector portion provided in the movable-side housing to each other, in which waterproofing means for preventing water fallen on the surface of the movable-side housing from entering the inside of the annular space portion and the water from being attached to the movable-side connector portion is provided on a surface portion side of the movable-side housing.
  • the water proofing means is provided on a surface portion side positioned in a lower region of the movable-side housing when the fixed-side housing is mounted on a vehicle body side and the movable-side housing is positioned at a neutral position with respect to the fixed-side housing.
  • an outer connector fitting portion configuring the movable-side connector portion protrudes from the surface portion side positioned in the lower region of the movable-side housing, and the waterproofing means is provided on the surface of the outer connector fitting portion.
  • the waterproofing means includes a guide portion which is configured to introduce the water fallen on the surface of the movable-side housing to the outside of the movable-side housing.
  • the waterproofing means includes a groove portion which is configured to prevent a flow of the water fallen on the surface of the movable-side housing toward the movable-side connector portion.
  • the present invention it is possible to provide a rotary connector in which even in a case where water falls on the surface of the movable-side housing, the water can be discharged to the outside of the movable-side housing before the fallen water is collected in the surface of the movable-side housing, and the water is prevented from entering the inside of the rotary connector.
  • Fig. 1 is a front view of the rotary connector according to the embodiment of the present invention.
  • Fig. 2 is a side view of the rotary connector according to the present embodiment and shows a state where the rotary connector is mounted on a steering shaft.
  • Fig. 3 is a partially exploded perspective view showing an outline of the rotary connector according to the present embodiment.
  • a rotary connector 1 is a connection device for transmitting an electric signal between a steering shaft 50 side serving as a steering device of an automobile and a vehicle body side.
  • the rotary connector 1 includes an annular fixed-side housing 2 which is attached to a steering column 51 fixed to the vehicle body side, and an annular movable-side housing 3 which is rotatably assembled to the fixed-side housing 2 and into which a steering shaft 50 enclosed in a steering column 51 is inserted.
  • the fixed-side housing 2 includes a outer tube portion 2A which is formed of a synthetic resin, an annular bottom plate portion 2B which is attached to the outer circumferential edge of the outer tube portion 2A and is formed of a synthetic resin, and a leg portion 2C which is integrally formed with the annular bottom plate portion 2B.
  • the leg portion 2C is attached to the steering column 51 on the vehicle body side and the fixed-side housing 2 is fixed to the steering column 51.
  • the movable-side housing 3 includes a disk-shaped upper rotor portion 3A which is formed of a synthetic resin, a disk-shaped lower rotor portion 3B which faces the upper rotor portion 3A with a predetermined distance and is formed of a synthetic resin, and a tubular intermediate rotor portion 3C which is provided on the intermediate portion between the upper rotor portion 3A and the lower rotor portion 3B and connects the rotor portions 3A and 3B.
  • the steering shaft 50 is inserted into the intermediate rotor portion 3C, and the movable-side housing 3 is assembled and fixed to the steering shaft 50 side.
  • the movable-side housing 3 is rotated in both forward and backward directions (arrow A direction and arrow B direction in Fig. 1 ) relative to the fixed-side housing 2 with an axis line as a center.
  • the fixed-side housing 2 and the movable-side housing 3 are assembled to each other, and an annular space portion 4 is formed in the inside of the rotary connector 1 which is surrounded by the housings 2 and 3.
  • a cable 5 for securing electric conduction between the fixed-side housing 2 and the movable-side housing 3 is accommodated in the annular space portion 4.
  • the cable 5 a flat cable 5 having flexibility is used as the cable 5, a flat cable 5 having flexibility is used.
  • the flat cable 5 is accommodated in the annular space portion 4 so as to be spirally wounded, and performs operations according to a winding rotation or an unwinding rotation from a neutral position (a position which causes an automobile to straightly travel) of the movable-side housing 3 with respect to the fixed-side housing 2 according to the rotation of the movable-side housing 3.
  • a fixed-side connector portion 6 is provided on the outer tube portion 2A configuring the fixed-side housing 2 so as to protrude from the outer circumference of the outer tube portion 2A toward the outside.
  • a movable-side lead block 7A configuring a movable-side connector portion 7 is attached to the rear surface side of the upper rotor portion 3A configuring the movable-side housing 3.
  • One end of the flat cable 5 is electrically connected to a fixed-side lead block (not shown) configuring the fixed-side connector portion 6, and the other end of the flat cable 5 is electrically connected to the movable-side lead block 7A of the movable-side connector portion 7.
  • the steering shaft 50 is inserted into the intermediate rotor portion 3C of the movable-side housing 3, and a steering handle is maintained at the neutral position (position which causes an automobile to straightly travel), that is, the movable-side housing 3 is positioned at the neutral position with respect to the fixed-side housing 2, an outer connector fitting portion 8 configuring the movable-side connector portion 7 protrudes from the surface portion side positioned in a lower region of the upper rotor portion 3A of the movable-side housing 3.
  • a connector portion (not shown) for connecting a cable connected to an airbag system, a horn switch circuit, or the like is fitted to the outer connector fitting portion 8.
  • the outer connector fitting portion 8 is divided into a first fitting portion 10 and the second fitting portion 11.
  • a positioning pin 9 for positionally fixing the movable-side housing 3 at a predetermined position on the steering shaft 50 side protrudes from the surface on the upper side of the upper rotor portion 3A of the movable-side housing 3.
  • the rotary connector 1 As shown in Fig. 2 , the rotary connector 1 having the above-described configuration is attached to the steering column 51 so as to be inclined at a predetermined angle ( ⁇ ) toward the front (left direction in Fig. 2 ) of a driver.
  • An opening portion 3a from which the movable-side lead block 7A is exposed is formed in the vicinity of the second fitting portion 11 in the upper rotor portion 3A of the movable-side housing 3.
  • the opening portion 3a is freely opened and closed by a cover 12.
  • a cover portion 13 which is integrally formed with the cover 12 is provided in the second fitting portion 11.
  • An opening portion 13A which is fitted to a locking portion 11A protruding from the main body of the second fitting portion 11 is formed in the cover portion 13, and the locking portion 11A and the opening portion 13A are fitted to each other. Accordingly, the cover 12 and the cover portion 13 are fastened so as to cover the opening portion 3a of the upper rotor portion 3A. In addition, the fitting between the locking portion 11A and the opening portion 13A is released, and the opening portion 3a of the upper rotor portion 3A can be opened.
  • Waterproofing means is provided on the surface portion side of the movable-side housing 3, and the waterproofing means prevents condensed water fallen on the surface of the upper rotor portion 3A of the movable-side housing 3 from entering the inside of the annular space portion 4, prevents the water from being attached to the movable-side lead block 7A of the movable-side connector portion 7, and prevents short circuit of an electric circuit.
  • a tapered guide portion 14 configuring the waterproofing means is provided in a region in which an upper corner portion 10a of the first fitting portion 10 of the outer connector fitting portion 8 is positioned.
  • the guide portion 14 has a function which introduces condensed water fallen on an upper surface 10A of the first fitting portion 10 to the outside of the movable-side housing 3.
  • a groove portion 15 configuring the waterproofing means is formed on the upper surface opposite to the guide portion 14 in a direction perpendicular to the rotation direction of the movable-side housing 3.
  • the groove portion 15 has a function which prevents the condensed water fallen on the upper surface 10A of the first fitting portion 10 from being transferred to the upper surface 10A of the first fitting portion 10, and prevents the condensed water from flowing to the side in which the movable-side lead block 7A of the movable-side connector portion 7 is provided.
  • groove portion 15 is formed from the upper surface 10A of the first fitting portion 10 to the surface of the upper rotor portion 3A of the movable-side housing 3.
  • Fig. 4 is an enlarged perspective view showing the portion of the waterproofing means of the rotary connector, and is a view showing the portion of the outer connector fitting portion.
  • Fig. 5 is an enlarged perspective view showing a main portion of the waterproofing means of the rotary connector, and is a view showing the portion of the guide portion configuring the waterproofing means.
  • Fig. 6 is an enlarged perspective view showing another main portion of the waterproofing means of the rotary connector, and is a view showing the portion of the groove portion configuring the waterproofing means.
  • the metal steering shaft 50 disposed in a cabin of an automobile is inserted into the intermediate rotor portion 3C, and the rotary connector 1 is assembled to the steering shaft 50 side.
  • the condensed water flows out from a contact portion between the steering shaft 50 and the intermediate rotor portion 3C of the movable-side housing 3, is transferred to the upper surface of the upper rotor portion 3A of the movable-side housing 3, and falls on the upper surface 10A of the first fitting portion 10.
  • the condensed water falls on the upper surface 10A of the first fitting portion 10, the condensed water is not collected in the upper surface 10A of the first fitting portion 10, is transferred to the upper surface 10A of the first fitting portion 10 as shown by an arrow D in Fig. 4 , moves toward the guide portion 14, and is discharged from the guide portion 14 to the outside of the movable-side housing 3 as shown by an arrow E in Fig. 4 . That is, the condensed water is introduced to the downstream side by the guide portion 14 which is inclined in a taper shape and surface tension of the condensed water is destroyed. Accordingly, the condensed water is not collected and is rapidly discharged to the outside of the movable-side housing 3.
  • the condensed water since the condensed water is discharged to the outside of the movable-side housing 3, even when condensation is generated in the steering shaft 50 and condensed water falls on the surface of the upper rotor portion 3A of the movable-side housing 3, the condensed water does not enter the inside of the rotary connector 1 from a hole which is formed in the upper rotor portion 3A or the like and does not reach the movable-side lead block 7A of the movable-side connector portion 7 incorporated into the inside of the rotary connector 3 , and it is possible to prevent short circuit of an electric circuit.
  • the condensed water fallen on the upper surface 10A of the first fitting portion 10 is not collected in the upper surface of the upper rotor portion 3A of the movable-side housing 3, flows to an edge portion 17 formed on the base of the first fitting portion 10, and is introduced toward the guide portion 14 along the edge portion 17. Accordingly, the condensed water does not move to an inlet 10b of the first fitting portion 10, and it is possible to smoothly move the condensed water to the guide portion 14.
  • the condensed water does not move to the inlet 10b side of the first fitting portion 10, the condensed water does not enter the inside of the first fitting portion 10, and it is possible to prevent short circuit of the electric circuit between the connection portions for connecting the cable fitted to the first fitting portion 10.
  • the condensed water fallen on the upper surface 10A of the first fitting portion 10 of the outer connector fitting portion 8 is collected in the portion of the groove portion 15 formed on the upper surface 10A of the first fitting portion 10 due to surface tension. Accordingly, it is possible to prevent the condensed water from moving toward the second fitting portion 11 side of the outer connector fitting portion 8 over the groove portion 15.
  • the condensed water since the condensed water is collected in the portion of the groove portion 15, even when condensation is generated in the steering shaft 50 and the condensed water falls on the upper surface 10A of the first fitting portion 10, the condensed water does not enter the inside of the rotary connector 1 from a gap 18 between the first fitting portion 10 and the cover portion 13 of the second fitting portion 11, or a gap 19 between the upper rotor portion 3A of the movable-side housing 3 and the cover 12 of the first fitting portion 10, the condensed water does not reach the movable-side lead block 7A of the movable-side connector portion 7 incorporated into the inside of the rotary connector 3, and it is possible to prevent short circuit of the electric circuit.
  • the groove portion 15 which is formed on the upper surface 10A of the first fitting portion 10 of the outer connector fitting portion 8 is formed over the surface of the upper rotor portion 3A, and even when the condensed water moves in the second fitting portion 11 direction along the edge portion 17 of the base of the first fitting portion 10, the condensed water is collected in the portion of the groove portion 15 due to surface tension. Accordingly, it is possible to prevent the condensed water from moving toward the second fitting portion 11 side of the outer connector fitting portion 8 over the groove portion 15.
  • the condensed water fallen on the upper surface 10A of the first fitting portion 10 of the outer connector fitting portion 8 can be discharged to the outside before being collected in the upper surface 10A of the first fitting portion 10, and it is possible to prevent the condensed water from entering the inside of the rotary connector 1. Accordingly, the condensed water does not reach the movable-side lead block 7A of the movable-side connector portion 7 incorporated into the inside of the rotary connector 1, and it is possible to prevent short circuit of the electric circuit.
  • the present invention may have a configuration in which the waterproofing means of the present invention is provided on the surface side of the movable-side housing 3, condensed water fallen on the surface of the movable-side housing 3 is prevented from entering the inside of the rotary connector 1, and short circuit of the electric circuit of the movable-side connector portion 7 is prevented.
  • the waterproofing means of the present invention may have one of the guide portion 14 and the groove portion 15 as long as it has the function which prevents the condensed water fallen on the surface of the movable-side housing 1 from entering the inside of the rotary connector 1 and prevents short circuit of the electric circuit of the movable-side connector portion 7.
  • the waterproofing means of the present invention may have a configuration in which a wall portion is provided instead of the groove portion 15 and movement of condensed water is contained by the wall portion.
  • the present invention can be applied to an on-vehicle electric component which prevention of short circuit of an electric circuit due to condensed water is required.

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  • Connector Housings Or Holding Contact Members (AREA)
EP17150092.9A 2016-01-13 2017-01-03 Connecteur rotatif Active EP3193409B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016004635A JP6605337B2 (ja) 2016-01-13 2016-01-13 回転コネクタ

Publications (2)

Publication Number Publication Date
EP3193409A1 true EP3193409A1 (fr) 2017-07-19
EP3193409B1 EP3193409B1 (fr) 2019-04-24

Family

ID=57714509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17150092.9A Active EP3193409B1 (fr) 2016-01-13 2017-01-03 Connecteur rotatif

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EP (1) EP3193409B1 (fr)
JP (1) JP6605337B2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180125497A (ko) * 2016-03-31 2018-11-23 후루카와 덴키 고교 가부시키가이샤 회전 커넥터 장치
EP3930117A4 (fr) * 2019-02-21 2022-04-27 Furukawa Electric Co., Ltd. Dispositif connecteur rotatif

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111903016B (zh) * 2018-03-30 2022-01-11 古河电气工业株式会社 旋转连接器装置及其固定体

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08195263A (ja) * 1995-01-13 1996-07-30 Alps Electric Co Ltd 成形ケーブルおよび回転コネクタ
JP2007220505A (ja) 2006-02-17 2007-08-30 Yazaki Corp 回転コネクタ装置
US20140051266A1 (en) * 2012-08-20 2014-02-20 Alps Electric Co., Ltd. Rotary connector

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6156164U (fr) * 1984-09-18 1986-04-15
JPH09204972A (ja) * 1996-01-25 1997-08-05 Alps Electric Co Ltd 回転コネクタ
JP3393762B2 (ja) * 1996-08-20 2003-04-07 アルプス電気株式会社 車載用回転コネクタ
JP2003059610A (ja) * 2001-08-22 2003-02-28 Sumitomo Wiring Syst Ltd ケーブルリール
JP2010146943A (ja) * 2008-12-22 2010-07-01 Alps Electric Co Ltd 回転コネクタ
JP4993011B2 (ja) * 2009-10-15 2012-08-08 株式会社デンソー 電子制御装置
JP2014032762A (ja) * 2012-08-01 2014-02-20 Mitsubishi Motors Corp 回転コネクタ装置
JP5579283B2 (ja) * 2013-01-15 2014-08-27 古河電気工業株式会社 センサ組込回転コネクタ
JP5579282B2 (ja) * 2013-01-15 2014-08-27 古河電気工業株式会社 センサ組込回転コネクタ
JP5546657B1 (ja) * 2013-02-20 2014-07-09 三菱電機株式会社 車載用電子制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08195263A (ja) * 1995-01-13 1996-07-30 Alps Electric Co Ltd 成形ケーブルおよび回転コネクタ
JP2007220505A (ja) 2006-02-17 2007-08-30 Yazaki Corp 回転コネクタ装置
US20140051266A1 (en) * 2012-08-20 2014-02-20 Alps Electric Co., Ltd. Rotary connector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180125497A (ko) * 2016-03-31 2018-11-23 후루카와 덴키 고교 가부시키가이샤 회전 커넥터 장치
EP3439122A4 (fr) * 2016-03-31 2019-10-30 Furukawa Electric Co. Ltd. Dispositif de raccordement rotatif
US10647275B2 (en) 2016-03-31 2020-05-12 Furukawa Electric Co., Ltd. Rotary connector device
EP3930117A4 (fr) * 2019-02-21 2022-04-27 Furukawa Electric Co., Ltd. Dispositif connecteur rotatif
US11843210B2 (en) 2019-02-21 2023-12-12 Furukawa Electric Co., Ltd. Rotary connector device

Also Published As

Publication number Publication date
JP2017126464A (ja) 2017-07-20
EP3193409B1 (fr) 2019-04-24
JP6605337B2 (ja) 2019-11-13

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