WO2013105276A1 - リミットスイッチ - Google Patents

リミットスイッチ Download PDF

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Publication number
WO2013105276A1
WO2013105276A1 PCT/JP2012/056494 JP2012056494W WO2013105276A1 WO 2013105276 A1 WO2013105276 A1 WO 2013105276A1 JP 2012056494 W JP2012056494 W JP 2012056494W WO 2013105276 A1 WO2013105276 A1 WO 2013105276A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixed contact
limit switch
switch body
lead wire
housing
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.)
Ceased
Application number
PCT/JP2012/056494
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
一如 月森
高橋　学
裕幸 森山
繁信 福井
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.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
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 Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to CN201280064455.9A priority Critical patent/CN104011820B/zh
Priority to ES12864762.5T priority patent/ES2674151T3/es
Priority to EP12864762.5A priority patent/EP2804192B1/en
Priority to US14/368,814 priority patent/US9490081B2/en
Publication of WO2013105276A1 publication Critical patent/WO2013105276A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H21/285—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift having an operating arm actuated by the movement of the body and mounted on an axis converting its rotating movement into a rectilinear switch activating movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H2001/5883—Electric connections to or between contacts; Terminals the extension of the contact being crimped around a wire
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/036—Crimping connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/038—Level sensing or limit switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings

Definitions

  • the present invention relates to a limit switch, and more particularly to a wiring structure of a lead wire connected to a fixed contact terminal of the limit switch.
  • the limit switch according to the present invention has an object to provide a limit switch that can easily connect lead wires and has high work efficiency.
  • the limit switch according to the present invention fixes the switch body in a housing having an opening on the front surface, and has a connection hole for drawing a lead wire in the bottom surface of the housing, while the front surface of the switch body is vertically arranged in a plurality of stages.
  • a limit switch that divides and embeds a pair of fixed contact terminals in each step and opens and closes the contact by driving the operation shaft exposed from the ceiling surface of the switch body in the axial direction.
  • a projecting portion is provided between the fixed contact terminals embedded in each stage.
  • the lead wire can be routed through the protrusion, wiring can be facilitated and work efficiency can be improved. Further, since the adjacent fixed contact terminals are partitioned by the protrusions, a limit switch having excellent insulating characteristics can be obtained.
  • the outer peripheral surface of the protrusion may have a shape along the wiring path of the lead wire. According to the present embodiment, it is possible to further increase the efficiency of connecting the lead wires.
  • an insulating wall may be provided that protrudes from at least one side edge to the front side of both side surfaces of the switch body. According to the present embodiment, the insulating wall can prevent the lead wire from directly contacting the inner surface of the housing, so that the insulating characteristics are further improved.
  • a lead wire having a crimp terminal at the tip may be connected to the fixed contact terminal with a connection screw. According to the present embodiment, since the lead wire can be connected to the fixed contact terminal via the crimp terminal, the connection work is further facilitated, and the working efficiency can be improved.
  • FIG. 1A and 1B are perspective views showing before and after operation of a first embodiment of a limit switch according to an embodiment of the present invention. It is a disassembled perspective view of the limit switch shown in FIG.
  • FIG. 2 is an exploded perspective view of the limit switch shown in FIG. 1 viewed from a different angle.
  • 4A and 4B are an enlarged perspective view and a longitudinal sectional view of the switch body shown in FIG. 5A is a partially exploded perspective view of the drive mechanism unit shown in FIG. 2, and FIG. 5B is a partially exploded perspective view of the drive mechanism unit according to the second embodiment.
  • 6A and 6B are front views for explaining a method of connecting lead wires to the limit switch shown in FIG. 7A is a front view following FIG. 6B, and FIG. 7B is a front view for explaining another connection method. It is a center longitudinal cross-sectional view before operation
  • the limit switch according to the first embodiment drives the switch body 20 incorporated in the housing 10 through a plunger 40 by a drive mechanism unit 50 having an operation lever 69. is there.
  • the housing 10 has a box shape capable of accommodating a switch body 20 described later, and an annular rib 12 is formed along an opening 11 provided on the front surface thereof. Then, the opening 11 is sealed by positioning the annular seal member 13 on the annular rib 12 and fixing the cover 14 to the housing 10 with a fixing screw 14a.
  • the housing 10 has a connection hole 15 on the bottom surface and an operation hole 16 on the ceiling surface. Positioning slits 17 are formed on the inner peripheral surface of the operation hole 16 in the axial direction at a pitch of 90 degrees, and an annular step 18 is formed concentrically near the opening edge of the operation hole 16. Has been.
  • the switch body 20 has an outer shape that can be accommodated from the opening 11 of the housing 10, and is fixed to the inner surface of the housing 10 with three fixing screws 20 a. Further, as shown in FIG. 4, the switch body 20 is divided into two upper and lower stages with partitioning ribs 21 and a hexagonal first protrusion 22 that protrudes in the center of the upper stage is provided. A square second protrusion 23 is provided at the center of the lower stage. Further, fixed contact terminals 25 and 26 having a substantially U-shaped cross section provided with connection screws 24 are embedded on both sides of the first projection 22, while connection screws 24 are provided on both sides of the second projection. Fixed contact terminals 27 and 28 are embedded. The switch body 20 is provided such that the insulating walls 29 and 29 protrude toward the front side from both side edge portions.
  • the switch body 20 supports an operation shaft 30 so as to be slidable up and down and is biased upward via a coil spring 31. For this reason, the upper end portion of the operation shaft 30 protrudes from an operation hole 20 b provided in the ceiling surface of the switch body 20. Then, the operation shaft 30 reverses the movable contact piece 32 shown in FIG. 4 up and down, so that the movable contacts 33 provided at both ends of the movable contact piece 32 become fixed contacts of the fixed contact terminals 25 and 26.
  • the fixed contact terminals 27 and 28 are alternately contacted and separated from the fixed contacts.
  • the plunger 40 has an outer shape that can move up and down along the operation hole 16 of the housing 10, and a substantially T-shaped operating protrusion on the upper surface of the flange portion 41.
  • a guide rib 43 is provided on the lower surface base of the flange 41. Then, by selecting and fitting the guide rib 43 of the plunger 40 into any one of the positioning slits 17 provided in the housing 10, the lower end portion of the plunger 40 becomes the upper end portion of the operation shaft 30. The rotation direction of the operation lever 69 described later can be detected.
  • the drive mechanism 50 is assembled to a box 53 fixed to the upper surface of the housing 10 via a seal ring 51 with a fixing screw 52. That is, as shown in FIG. 8, a rotating shaft 61 is rotatably inserted into a cylindrical bearing portion 60 press-fitted and fixed from an assembly hole 55 of a cylindrical rib 54 provided in the box 53. The distal end of the rotating shaft 61 is fitted in a bearing recess 56 provided on the inner surface of the box 53, and a return coil spring 62 is sandwiched between the distal ends of the rotating shaft 61. A pair of annular cams 63 and 64 are prevented from coming off via the E-ring 65 (for convenience of explanation, the return coil spring 62 is not shown in FIGS. 8 and 9).
  • the annular cams 63 and 64 have through holes 63a and 64a that can be fitted to the tip of the rotating shaft 61 provided with a flat surface 61a (FIG. 3). . Further, on the inner peripheral surfaces of the through holes 63a and 64a, protrusions 63b and 64b having a triangular section that can be locked to the edge of the flat surface 61a of the rotating shaft 61 are provided along the axial direction. It is. Further, both ends of the return coil spring 62 are engaged with the annular cams 63 and 64, respectively, so that a biasing force in a rotating direction is applied to the rotating shaft 61. This is for returning an operation lever 69 described later to the original position.
  • a rubber oil seal 66 is mounted on the rear end side of the rotating shaft 61 protruding from the cylindrical rib 54, and a set position display plate 67 is engaged. It is. Further, an operating lever 69 having a roller 68 is fixed to the rear end portion of the rotating shaft 61 via an adjusting screw 69a.
  • the annular cams 63 and 64 are not only fixed through the E-ring 65 but also, for example, a stopper 65a that is press-fitted and fixed to the tip of the rotating shaft 61 as in the second embodiment shown in FIG. 5B.
  • the annular cams 63 and 64 may be prevented from coming off.
  • Others are the same as those in the first embodiment described above, and thus the same parts are denoted by the same reference numerals and description thereof is omitted.
  • the switch body 20 is inserted from the opening 11 of the housing 10 and fixed with three fixing screws 20a.
  • the guide ribs 43 of the plunger 40 are selectively fitted and assembled to the positioning slits 17 provided in the operation hole 16 of the housing 10.
  • a seal ring 51 is fitted into an annular step 18 provided around the operation hole 16, and the box 53 is fixed to the housing 10 with a fixing screw 52.
  • annular cam 63, a return coil spring 62 and an annular cam 64 are sequentially inserted into the distal end side of the rotating shaft 61 and are prevented from coming off by an E-ring 65.
  • the cylindrical bearing portion 60 is press-fitted and fixed in the assembly hole 55. As a result, the cylindrical bearing portion 60 comes into contact with the outward surface of the annular cam 63 and the rotating shaft 61 is prevented from coming off.
  • annular cams 63 and 64 are in contact with the operating protrusion 42 of the plunger 40. Further, a rubber oil seal 66 is fitted to the rear end side of the rotation shaft 61 protruding from the box 53 to seal and engage the set position display plate 67. Next, an operation lever 69 is assembled to the rear end of the rotating shaft 61 and fixed with an adjusting screw 69a.
  • the lead wires 70 and 71 are connected to the lower fixed contact terminals 27 and 28 as shown in FIG. 6A. Each terminal is fixed with a connection screw 24.
  • the connection terminal of the lead wire 72 is fixed to the fixed contact terminal 26 with the connection screw 24.
  • the connection work is completed by fixing the lead wire 73 to the fixed contact terminal 25 with the connection screw 24.
  • the creeping distance is increased by the partition rib 21 and the first protrusion 22 and the second protrusion 23 function as insulating walls, so that a limit switch having excellent insulating characteristics can be obtained.
  • the lead wire 72 is bent along the first protrusion 22 to be connected to the fixed contact terminal 25, and the lead wire 73 is The detour along the one protrusion 22 may be connected to the fixed contact terminal 26.
  • the outer peripheral surface of the first protrusion 22 is shaped along the wiring path of the lead wires 72 and 73 (such as a substantially hexagon or a substantially parallelogram when the first protrusion 22 is viewed from the front.
  • an external force in the clockwise direction is detected by engaging the guide rib 43 with the selected positioning slit 17, but in the counterclockwise direction. It can be used to detect no external force.
  • the operation lever is not necessarily assembled vertically, and may be attached, for example, in a horizontal direction or an oblique direction.
  • the present invention is not necessarily limited thereto, and may be applied to, for example, a limit switch that connects six or eight lead wires.
  • a single annular cam may be attached to the pivot shaft.
  • the present invention is not limited to the limit switch described above, and may be applied to limit switches of other shapes.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
PCT/JP2012/056494 2012-01-13 2012-03-14 リミットスイッチ Ceased WO2013105276A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201280064455.9A CN104011820B (zh) 2012-01-13 2012-03-14 限位开关
ES12864762.5T ES2674151T3 (es) 2012-01-13 2012-03-14 Interruptor de fin de carrera
EP12864762.5A EP2804192B1 (en) 2012-01-13 2012-03-14 Limit switch
US14/368,814 US9490081B2 (en) 2012-01-13 2012-03-14 Limit switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012005437A JP6080359B2 (ja) 2012-01-13 2012-01-13 リミットスイッチ
JP2012-005437 2012-01-13

Publications (1)

Publication Number Publication Date
WO2013105276A1 true WO2013105276A1 (ja) 2013-07-18

Family

ID=48781246

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/056494 Ceased WO2013105276A1 (ja) 2012-01-13 2012-03-14 リミットスイッチ

Country Status (6)

Country Link
US (1) US9490081B2 (https=)
EP (1) EP2804192B1 (https=)
JP (1) JP6080359B2 (https=)
CN (1) CN104011820B (https=)
ES (1) ES2674151T3 (https=)
WO (1) WO2013105276A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2863405A1 (en) * 2013-10-15 2015-04-22 Omron Corporation Limit switch

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6080359B2 (ja) * 2012-01-13 2017-02-15 オムロン株式会社 リミットスイッチ
JP6277668B2 (ja) * 2013-02-14 2018-02-14 オムロン株式会社 操作レバーのシール構造およびこれを用いた電動工具
USD751997S1 (en) 2013-08-08 2016-03-22 Omron Corporation Box cover for limit switch
JP2015082489A (ja) * 2013-10-24 2015-04-27 オムロン株式会社 スイッチ
US9928972B1 (en) * 2016-11-09 2018-03-27 Honeywell International Inc. Limit switch housing with reset function
CN108400031B (zh) * 2017-02-06 2021-12-21 霍尼韦尔国际公司 限位开关复位键
DE102018127261B4 (de) * 2017-11-23 2024-01-04 Defond Components Limited Elektrische Schaltereinheit mit einem Dichtungselement zur Verwendung bei einer elektrischen Vorrichtung
JP6866864B2 (ja) * 2018-03-14 2021-04-28 オムロン株式会社 リミットスイッチ
JP6866863B2 (ja) * 2018-03-14 2021-04-28 オムロン株式会社 リミットスイッチ
JP6866862B2 (ja) * 2018-03-14 2021-04-28 オムロン株式会社 リミットスイッチ
JP6580192B1 (ja) * 2018-04-23 2019-09-25 トーヨーカネツソリューションズ株式会社 搬送装置の遮断機構
JP7467788B2 (ja) * 2018-04-23 2024-04-16 トーヨーカネツ株式会社 搬送装置の遮断機構
CN108766803B (zh) * 2018-08-02 2024-10-11 上海飞力勋铖电气科技有限公司 一种模块化结构的防水行程开关
CN114068207B (zh) * 2021-12-16 2024-06-14 深圳市海本电子科技有限公司 一种电子元器件及其制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340870A (en) * 1976-09-27 1978-04-13 Matsushita Electric Works Ltd Electric switch
JPS5346572U (https=) * 1976-09-27 1978-04-20
JPS6319717U (https=) * 1986-07-18 1988-02-09
JPH02278624A (ja) * 1989-04-20 1990-11-14 Omron Corp スイッチ
JP2001043774A (ja) 1999-07-30 2001-02-16 Matsushita Electric Works Ltd 接点開閉装置
JP2009211898A (ja) * 2008-03-04 2009-09-17 Omron Corp 端子台構造とこれを備えたスイッチ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201169C2 (de) * 1982-01-16 1984-06-28 Danfoss A/S, Nordborg Vorrichtung zum Festklemmen elektrischer Leiter insbesondere von Drähten
JPH0727063U (ja) * 1993-10-15 1995-05-19 ケル株式会社 端子台
FR2820542B1 (fr) * 2001-02-07 2004-07-16 Schneider Electric Ind Sa Interrupteur de position
JP3785942B2 (ja) * 2001-03-30 2006-06-14 松下電工株式会社 接続変換装置
CN201904233U (zh) * 2010-12-21 2011-07-20 天津市六开电梯配套有限责任公司 安全触点型限位开关
JP6080359B2 (ja) * 2012-01-13 2017-02-15 オムロン株式会社 リミットスイッチ
JP5935334B2 (ja) * 2012-01-13 2016-06-15 オムロン株式会社 リミットスイッチ
JP5870704B2 (ja) * 2012-01-13 2016-03-01 オムロン株式会社 リミットスイッチ、およびその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340870A (en) * 1976-09-27 1978-04-13 Matsushita Electric Works Ltd Electric switch
JPS5346572U (https=) * 1976-09-27 1978-04-20
JPS6319717U (https=) * 1986-07-18 1988-02-09
JPH02278624A (ja) * 1989-04-20 1990-11-14 Omron Corp スイッチ
JP2001043774A (ja) 1999-07-30 2001-02-16 Matsushita Electric Works Ltd 接点開閉装置
JP2009211898A (ja) * 2008-03-04 2009-09-17 Omron Corp 端子台構造とこれを備えたスイッチ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2863405A1 (en) * 2013-10-15 2015-04-22 Omron Corporation Limit switch
CN104576110A (zh) * 2013-10-15 2015-04-29 欧姆龙株式会社 开关

Also Published As

Publication number Publication date
CN104011820A (zh) 2014-08-27
US20140326586A1 (en) 2014-11-06
EP2804192A4 (en) 2015-09-30
US9490081B2 (en) 2016-11-08
EP2804192B1 (en) 2018-05-09
CN104011820B (zh) 2016-10-12
EP2804192A1 (en) 2014-11-19
ES2674151T3 (es) 2018-06-27
JP2013145675A (ja) 2013-07-25
JP6080359B2 (ja) 2017-02-15

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