EP0344687A2 - Relais électromagnétique avec des fenêtres de contrôle - Google Patents

Relais électromagnétique avec des fenêtres de contrôle Download PDF

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Publication number
EP0344687A2
EP0344687A2 EP89109657A EP89109657A EP0344687A2 EP 0344687 A2 EP0344687 A2 EP 0344687A2 EP 89109657 A EP89109657 A EP 89109657A EP 89109657 A EP89109657 A EP 89109657A EP 0344687 A2 EP0344687 A2 EP 0344687A2
Authority
EP
European Patent Office
Prior art keywords
moveable contact
contact piece
electromagnetic relay
opening
contact pieces
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.)
Withdrawn
Application number
EP89109657A
Other languages
German (de)
English (en)
Other versions
EP0344687A3 (fr
Inventor
Masaharu c/o Omron Tateisi Electr. Co. Nakagawa
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 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 Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Publication of EP0344687A2 publication Critical patent/EP0344687A2/fr
Publication of EP0344687A3 publication Critical patent/EP0344687A3/fr
Withdrawn legal-status Critical Current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
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/06—Bases; Casings; Covers having windows; Transparent cases or covers
    • 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
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/08—Indicators; Distinguishing marks

Definitions

  • the present invention relates to an electromagnetic relay which uses an inner casing for its contact mechanism but permits visual inspection of its contact mechanism.
  • a conventional electromagnetic relay its contact mechanism comprising fixed contact pieces carrying fixed contact points, moveable contact pieces carrying moveable contact points for cooperating with the fixed contact points is accommodated in an inner casing, and the base ends of the contact pieces are passed through the bottom wall of the inner casing and also the bottom wall or the base of the outer casing which encloses the inner casing.
  • the inner casing serves as a structural member for supporting the contact pieces, and may be provided with partition walls separating contact pieces belonging different circuits apart.
  • a solenoid is provided externally of the inner casing but internally of the outer casing, and an actuating member is engaged with an armature of the solenoid at its one end and with the moveable contact pieces at its other ends for transmitting the movement of the armature to the moveable contact pieces.
  • the use of such an inner casing is useful not only for physically and electrically separating the contact pieces but also for facilitating the assembly work.
  • a primary object of the present invention is to provide an electromagnetic relay which allows any failures in its contact mechanism to be easily discovered.
  • a second object of the present invention is to provide an electromagnetic relay which simplifies maintenance work.
  • an electromagnetic relay comprising: an inner casing consisting of opaque and electrically insulating material accommodating at least one moveable contact piece and at least one fixed contact piece therein; an outer casing made of transparent material at least in part thereof for accommodating a solenoid and the inner casing therein; and an actuating member functionally engaged to an armature of the solenoid at its one and and to the moveable contact piece at its other end; the inner casing being provided with an opening which exposes at least a part of the moveable contact piece through the transparent part of the outer casing.
  • the inner casing is provided with an opening for allowing the moveable contact piece to be monitored from outside, the position of the moveable contact piece and the state of the contact point carried by the moveable contact piece can be visually inspected as required. Therefore, according to the present invention, discovering faulty contact points can be made visually, and the state of the contact point can be readily checked, whereby the system repair and maintenance are both simplified.
  • the outer casing comprises a base through which terminal pieces for the solenoid and the contact pieces are passed, and a cover made of transparent material and fitted upon the base.
  • the moveable contact piece is integral with or attached to one of the terminal pieces passed through the base, and the opening of the inner casing is provided adjacent a free end of the moveable contact piece.
  • the free end of the moveable contact piece is provided with an indicator marker which shows through the opening at one of its operative positions but hides from the opening at another of its operative positions.
  • the indicator marker consists of an extension of the moveable contact piece bent perpendicularly therefrom, and the opening consists of an L shaped opening consisting of a first portion for selectively showing the indicator marker and a second portion for showing a contact point of the moveable contact piece.
  • an identification mark for the moveable contact piece may provided on the external surface of the inner case adjacent the opening.
  • Figure 1 is a plan view of the electromagnetic relay according to the present invention, and Figure 2 shows a sectional view taken along line I-I of Figure 1.
  • the electromagnetic relay comprises an outer casing 1 consisting of a base 1a and a transparent cover 1b fitted thereon.
  • a solenoid 2 consisting of a bobbin and a coil wire 2a wound thereon is vertically disposed on one side of the upper surface of the base 1a.
  • the start and end leads of the coil wire 2a are connected to coil terminals 3 which are passed through the base 1a of the outer casing 1.
  • An armature 5 which is pivotally mounted on the solenoid 2 by way of a hinge spring 4 is arranged adjacent the upper end of the solenoid 2 so as to be able to move toward and away from a magnetic pole surface 2b of the solenoid 2, and an extension 6 is bent substantially perpendicularly from the armature 5 and extends in parallel with the solenoid 2 so as to be moved toward and away from the solenoid 2 according to the movement of the armature away from and towards the magnetic pole surface 2b, respectively.
  • Numeral 7 denotes an inner casing which is mounted on the other side of the upper surface of the base 1a.
  • This inner casing 7 is constructed as a hollow box made of opaque and electrically insulating material such as synthetic resin, and is provided with support columns for fixed contact pieces 9 and moveable contact pieces 10 which are described hereinafter and projecting walls 7a, 7b, .. serving as partition walls projecting from the bottom wall and the upper wall of the inner casing 7, respectively, in mutually opposing relationship.
  • the base 1a of the outer casing and the bottom wall of the inner casing 7 are provided with a plurality of terminal pieces 8 passed therethrough, and these terminal pieces 8 are connected to normally closed and normally open fixed contact pieces 9 and moveable contact pieces 10 placed between the normally closed contact pieces 9 and the normally open contact pieces 9 in the inner casing 7.
  • Numeral 11 denotes a actuating member which is engaged to a lower end portion of the aforementioned extension 6 at its one end to the moveable contact pieces 10 at its other parts so that the movement of the extension 6 may cause the horizontal movement of the actuating member 11 inside the box-shaped inner casing 7 and the moveable contact pieces 10 may be switched over from contacting normally closed fixed contact pieces 9 to contacting normally open fixed contact pieces 9.
  • the top wall of the inner casing 7 is provided with rectangular windows 12 for permitting the inspection of the moveable contact pieces 10 whose lower ends are supported by the bottom wall of the inner casing 7.
  • numeral 1b denotes a transparent cover for covering the main part of the electromagnetic relay by being fitted upon the periphery of the bottom wall 1a.
  • the present invention has the above described structure, when this electromagnetic relay is energized, the armature 5 is attracted to the magnetic pole surface 2b of the solenoid 2 and the movement of the extension 6 resulting from the displacement of the armature 5 causes the horizontal movement of the actuating member 11. As a result, the moveable contact pieces 10 are moved away from the normally closed fixed contact pieces 9 and are pushed against the normally open fixed contact pieces 9.
  • the contact points can be checked from the monitoring windows in case of a failure of the electronic system, and the required repair work can be quickly performed.
  • the monitoring windows 12 should be large enough to expose the contact points 10a to the outside.
  • each of the windows 12 is provided with a shielding portion 13 which defines the window 12, which is otherwise rectangular in shape, into the shape of letter L, and a projecting piece 14 is bent from an upper edge of each of the moveable contact pieces 10 so as to hide behind the shielding portion 13 when the solenoid 2 is deenergized as shown in Figure 4, and show in the corresponding monitoring window 12 when the solenoid 2 is energized as shown in Figure 5.
  • the other part of the windows show the corresponding contact points 10a of the moveable contact pieces 10 so that they may be monitored for their positions and state of wear.
  • the projecting pieces 14 provided in the moveable contact pieces 10 show in the monitoring windows 12 as shown in Figure 5 and the inspection of the operation of the contact points can be performed even more easily.
  • Figure 6 shows a third embodiment of the present invention according to which terminal numbers 16 and the polarity indications 17 of the terminal pieces are indicated around the monitoring windows 12 so as to permit recognition of the operative states of the circuits.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Contacts (AREA)
EP19890109657 1988-05-30 1989-05-29 Relais électromagnétique avec des fenêtres de contrôle Withdrawn EP0344687A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP71290/88U 1988-05-30
JP7129088U JPH0641317Y2 (ja) 1988-05-30 1988-05-30 電磁継電器

Publications (2)

Publication Number Publication Date
EP0344687A2 true EP0344687A2 (fr) 1989-12-06
EP0344687A3 EP0344687A3 (fr) 1990-12-12

Family

ID=13456411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890109657 Withdrawn EP0344687A3 (fr) 1988-05-30 1989-05-29 Relais électromagnétique avec des fenêtres de contrôle

Country Status (2)

Country Link
EP (1) EP0344687A3 (fr)
JP (1) JPH0641317Y2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443199A1 (fr) * 1990-02-21 1991-08-28 SASIB S.p.A. Relais à courant continu, spécialement pour des systèmes de signalisation de chemin de fer
EP0416458A3 (en) * 1989-09-08 1991-12-04 Hengstler Bauelemente Gmbh Relay
KR101310602B1 (ko) * 2013-03-27 2013-09-23 강춘기 인디케이터가 구비된 계전기
WO2015106975A1 (fr) * 2014-01-16 2015-07-23 Robert Bosch Gmbh Dispositif de commutation pour commuter des courants électriques élevés et système de batteries équipé d'un tel dispositif de commutation
CN106710985A (zh) * 2017-01-06 2017-05-24 国网山东省电力公司冠县供电公司 一种断路器开关操作机构
CN108183041A (zh) * 2016-12-08 2018-06-19 施耐德电器工业公司 用于电气开关装置的可移除开关元件和包括其的开关装置
EP3404690A1 (fr) * 2017-05-17 2018-11-21 Schneider Electric Industries SAS Elément amovible de coupure d'un courant électrique et appareil électrique de coupure d'un courant électrique comprenant un tel élément amovible de coupure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3402650A1 (de) * 1984-01-26 1985-08-01 Hengstler GmbH, Geschäftsbereich Haller-Relais, 7209 Wehingen Kontaktfederbock fuer relais mit gehaeusekappe
DE8712023U1 (de) * 1987-09-04 1987-11-05 W. Gruner GmbH Relaisfabrik, 7209 Wehingen Kleinrelais mit Anzeige der Schaltstellung

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416458A3 (en) * 1989-09-08 1991-12-04 Hengstler Bauelemente Gmbh Relay
EP0443199A1 (fr) * 1990-02-21 1991-08-28 SASIB S.p.A. Relais à courant continu, spécialement pour des systèmes de signalisation de chemin de fer
KR101310602B1 (ko) * 2013-03-27 2013-09-23 강춘기 인디케이터가 구비된 계전기
CN105900201B (zh) * 2014-01-16 2019-01-15 罗伯特·博世有限公司 用于开关大电流的开关装置和带有这种开关装置的电池系统
WO2015106975A1 (fr) * 2014-01-16 2015-07-23 Robert Bosch Gmbh Dispositif de commutation pour commuter des courants électriques élevés et système de batteries équipé d'un tel dispositif de commutation
CN105900201A (zh) * 2014-01-16 2016-08-24 罗伯特·博世有限公司 用于开关大电流的开关装置和带有这种开关装置的电池系统
KR20160107180A (ko) * 2014-01-16 2016-09-13 로베르트 보쉬 게엠베하 고전류를 스위칭하기 위한 스위칭 장치 및 이러한 스위칭 장치를 포함하는 배터리 시스템
CN108183041A (zh) * 2016-12-08 2018-06-19 施耐德电器工业公司 用于电气开关装置的可移除开关元件和包括其的开关装置
CN108183041B (zh) * 2016-12-08 2021-10-29 施耐德电器工业公司 用于电气开关装置的可移除开关元件和包括其的开关装置
CN106710985A (zh) * 2017-01-06 2017-05-24 国网山东省电力公司冠县供电公司 一种断路器开关操作机构
CN106710985B (zh) * 2017-01-06 2020-05-15 纵达电器有限公司 一种断路器开关操作机构
FR3066641A1 (fr) * 2017-05-17 2018-11-23 Schneider Electric Industries Sas Element amovible de coupure d'un courant electrique et appareil electrique de coupure d'un courant electrique comprenant un tel element amovible de coupure
US10431964B2 (en) 2017-05-17 2019-10-01 Schneider Electric Industries Sas Removable electric current switching element and electrical switchgear for switching an electric current comprising such a removable switching element
EP3404690A1 (fr) * 2017-05-17 2018-11-21 Schneider Electric Industries SAS Elément amovible de coupure d'un courant électrique et appareil électrique de coupure d'un courant électrique comprenant un tel élément amovible de coupure

Also Published As

Publication number Publication date
JPH0641317Y2 (ja) 1994-10-26
JPH01174836U (fr) 1989-12-12
EP0344687A3 (fr) 1990-12-12

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