EP0393597B1 - Contact device - Google Patents

Contact device Download PDF

Info

Publication number
EP0393597B1
EP0393597B1 EP90107277A EP90107277A EP0393597B1 EP 0393597 B1 EP0393597 B1 EP 0393597B1 EP 90107277 A EP90107277 A EP 90107277A EP 90107277 A EP90107277 A EP 90107277A EP 0393597 B1 EP0393597 B1 EP 0393597B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact arm
contact device
fixed
support
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 - Lifetime
Application number
EP90107277A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0393597A3 (en
EP0393597A2 (en
Inventor
Takato C/O Fuji Electric Co. Ltd. Hirota
Kuniyuki C/O Fuji Electric Co. Ltd. Kogawa
Shigeaki C/O Fuji Electric Co. Ltd. Ohtake
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of EP0393597A2 publication Critical patent/EP0393597A2/en
Publication of EP0393597A3 publication Critical patent/EP0393597A3/en
Application granted granted Critical
Publication of EP0393597B1 publication Critical patent/EP0393597B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H01H50/545—Self-contained, easily replaceable microswitches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0012—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for converting normally open to normally closed switches and vice versa

Definitions

  • This invention relates to a contact device and more specifically to a contact device to be attached to an electromagnetic switch for increasing the number of contacts.
  • An electromagnetic contactor such as an auxiliary relay, usually has auxiliary contacts. Occasionally, more auxiliary contacts are needed due to construction of a controlled circuit. In such a case, a separate contact device is attached to an electromagnetic contactor or an auxiliary relay to increase the number of the auxiliary contacts.
  • Fig. 3 is a side-elevational view showing a conventional contact device 1 attached to a head portion of a conventional electromagnetic contactor 2.
  • Fig. 4 is a perspective view of the contact device 1 of Fig. 3.
  • Fig. 5 is a perspective view of the electromagnetic contactor 2 of Fig. 3.
  • frame hook portions 12 formed on a frame 11 of the contact device 1 are inserted in an engaging portion 21 of the electromagnetic contactor 2 to effect the desired connection.
  • a contact support connector portion 13a of the contact device 1 is connected to a contact support 22 of the electromagnetic contactor 2.
  • a contact support 13 of the contact device 1 is driven (upward and downward in the drawings) to thereby open and close a contact (not shown).
  • a conventional a-contact is shown in Fig. 6.
  • fixed a-contacts 14a are mounted within a frame 11.
  • a conventional b-contact is shown in Fig. 7.
  • fixed b-contacts 14b are mounted within the frame 11.
  • the movable contact 15a (Fig. 6), 15b (Fig. 7) is supported on the contact support 13 through a contact spring 16.
  • the movable contact 15a is provided in corresponding relation to the fixed contact 14a
  • the movable contact 15b is provided in corresponding relation to the fixed contact 14b.
  • the movable contact 15b is engageable with a distal end 14b1 of the U-shaped fixed b-contact 14b, which thus serves as a stopper for preventing the contact support 13 from becoming disengaged from the frame 11.
  • Fig. 8 is a cross-sectional view of a second embodiment of a conventional b-contact construction which differs from that of Fig. 7 in that each fixed b-contact 14b is of a flat plate-like shape, and that a cover 17 is provided to serve as a stopper for preventing the contact support 13 from being disengaged from the frame 11.
  • a fixed contact has a U-shaped cross-section, and a problem arises from this that since the width H of this U-shape is large, its dimension in a direction of movement of the contact support is large.
  • the cover is provided as a stopper, the number of the component parts as well as the time required for assembly is increased, resulting in increased costs.
  • a contact device having the features of the first part of claim 1 is known from DE-U-7 135 631.
  • the contact device comprises fixed contacts fixed to a frame, a contact support mounted within said frame and being movable in its axial direction, and a movable contact mounted on said contact support through a contact spring, the contacts being opened and closed by the axial movement of said contact support, wherein a projecting piece is formed on an inner end of said contact support and projects from the opposite sides of said inner end; and the distance between the opposite ends of said projecting piece is greater than the distance between said fixed contacts.
  • the projecting piece is formed on the inner end of the contact support, and therefore even in the case where the movable contact is arranged outwardly (the right side as shown in the drawings) of the fixed contacts, when the contact support supporting the movable contact is moved, the projecting piece formed on the inner end of the contact support is abutted against the rear surface of the fixed contacts, so that the contact support will not be disengaged from the frame.
  • the projecting piece can be very thin, and therefore the dimension in the direction of movement of the contact is not increased.
  • Fig. 1 is a cross-sectional view of an a-contact device.
  • Fig. 2 is a cross-sectional view of a b-contact device.
  • fixed contacts attached to a frame 11 have a flat plate-like shape.
  • In an a-contact device there are provided fixed a-contacts 14a.
  • In a b-contact device there are provided fixed b-contacts 14b.
  • Each of movable contacts 15a and 15b is supported on a contact support 13 through a contact spring 16, and is provided at contact support windows 19-1 and 19-2, respectively.
  • the movable contact 15a is disposed inwardly (the left side as shown in Fig. 1) of the fixed a-contact 14a. Therefore, when the contact support 13 moves in a right-hand direction, the movable contact 15a is brought into contact with the fixed a-contact 14a, so that the contact support 13 will not become disengaged from the frame 11.
  • the movable contact 15b is disposed outwardly (the right side as shown in Fig. 1) of the fixed b-contact 14b. Therefore, when the contact support 13 is moved in a right-hand direction, the contact support 13 will tend to disengage from the frame 11. However, a projecting piece 18 formed on an inner end of the contact support 13 abuts against the rear surfaces of the fixed b-contacts 14b, thereby preventing the disengagement.
  • the projecting piece is formed on the inner end of the contact support, and therefore the projecting piece performs the function of a stopper so that the contact support will not be disengaged from the frame. Further, there is no need to increase the number of the component parts and also no need to bend the fixed contact into a U-shaped cross-section, and therefore the cost of the material of the fixed contact is reduced to thus achieve a cost reduction. Further, since the fixed contact has a flat plate-like shape, its dimension in the direction of movement of the contact support is decreased, and an inexpensive, small-size contact device can be achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Contacts (AREA)
EP90107277A 1989-04-20 1990-04-17 Contact device Expired - Lifetime EP0393597B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP46604/89U 1989-04-20
JP1989046604U JPH02137737U (US08124317-20120228-C00026.png) 1989-04-20 1989-04-20

Publications (3)

Publication Number Publication Date
EP0393597A2 EP0393597A2 (en) 1990-10-24
EP0393597A3 EP0393597A3 (en) 1991-11-21
EP0393597B1 true EP0393597B1 (en) 1995-07-05

Family

ID=12751906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107277A Expired - Lifetime EP0393597B1 (en) 1989-04-20 1990-04-17 Contact device

Country Status (4)

Country Link
EP (1) EP0393597B1 (US08124317-20120228-C00026.png)
JP (1) JPH02137737U (US08124317-20120228-C00026.png)
KR (1) KR900017059A (US08124317-20120228-C00026.png)
DE (1) DE69020621T2 (US08124317-20120228-C00026.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107026056A (zh) * 2017-05-09 2017-08-08 东莞市三友联众电器有限公司 一种带有辅助触点的直流接触器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600084041A1 (it) * 2016-08-09 2018-02-09 Gewiss Spa Struttura di contatto ausiliario

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1498480A (fr) * 1966-07-27 1967-10-20 Cie Electromecanique Perfectionnement aux contacteurs électriques
DE7135631U (de) * 1971-09-20 1971-12-09 Bbc Ag Ansteckbarer Hilfsschalter für Schütze
JPS57152479A (en) * 1981-03-16 1982-09-20 Toyo Soda Mfg Co Ltd Production of gas diffusion electrode
JPS58161889A (ja) * 1982-03-19 1983-09-26 株式会社東芝 制御棒案内管，制御棒および燃料支持金具の据付方法
DE8805878U1 (de) * 1988-05-03 1989-09-07 Siemens AG, 1000 Berlin und 8000 München Hilfsschalteraufsatzblock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107026056A (zh) * 2017-05-09 2017-08-08 东莞市三友联众电器有限公司 一种带有辅助触点的直流接触器
CN107026056B (zh) * 2017-05-09 2019-08-27 三友联众集团股份有限公司 一种带有辅助触点的直流接触器

Also Published As

Publication number Publication date
EP0393597A3 (en) 1991-11-21
EP0393597A2 (en) 1990-10-24
DE69020621D1 (de) 1995-08-10
KR900017059A (ko) 1990-11-15
JPH02137737U (US08124317-20120228-C00026.png) 1990-11-16
DE69020621T2 (de) 1995-11-30

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