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WO2007026800A1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

Info

Publication number
WO2007026800A1
WO2007026800A1 PCT/JP2006/317176 JP2006317176W WO2007026800A1 WO 2007026800 A1 WO2007026800 A1 WO 2007026800A1 JP 2006317176 W JP2006317176 W JP 2006317176W WO 2007026800 A1 WO2007026800 A1 WO 2007026800A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
fixed
sliding
movable contact
electromagnetic relay
Prior art date
Application number
PCT/JP2006/317176
Other languages
English (en)
Japanese (ja)
Inventor
Toshiharu Mori
Yoshio Tanabe
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 WO2007026800A1 publication Critical patent/WO2007026800A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting

Definitions

  • the present invention relates to an electromagnetic relay, for example, an electromagnetic relay capable of switching a switch circuit by moving a movable contact to be attracted to and separated from an electromagnet.
  • a conventional electromagnetic relay is described in Patent Document 1.
  • the conventional electromagnetic relay 30 has an electromagnet 32 formed on the right side of the body 31 in the figure, and the electromagnet 32 has an iron core. 33, a coil 34 connected to the coil terminal 34a, a yoke 35, and a movable knitting 36.
  • the yoke 35 is formed in a substantially L shape with one piece 35a and the other side 35
  • the movable piece 36 is formed in a substantially L shape with one piece 36a and the other side 36b.
  • the movable piece 36 in the initial state before energizing the coil 34 is elastically biased in a direction in which the other side 36b approaches the other side 36b of the yoke 35 by a hinge spring (not shown).
  • a protruding wall 37 is formed protruding upward from the bottom 31a of the body 31.
  • a cutout groove 38 is formed in the protruding wall 37, and a drive member 39 is slidably held in the cutout groove 38 in the left-right direction in the figure.
  • the drive member 39 has a holding piece 40 held substantially horizontally in the cutout groove 38 and an operating piece 41 orthogonal to the holding piece 40, and the drive member 39 slides in the left direction in the figure.
  • the operating piece 41 can press the movable contact plate panel 42.
  • the movable contact plate panel 42 is formed with a movable contact portion 42a which is a butt contact, and the movable contact panel 42 is electrically connected to a common terminal (not shown) protruding downward from the body 31. Has been.
  • a fixed contact plate 43 is disposed on the left side of the movable contact plate panel 42 facing the movable contact plate panel 42 with a gap of a predetermined dimension.
  • the fixed contact plate 43 includes a movable contact portion 4 of the movable contact plate panel 42.
  • a fixed contact portion 43a is formed at a portion facing 2a, and the fixed contact plate 43 is electrically connected to a fixed terminal 43b protruding downward from the body 31.
  • the operating piece 41 of the drive member 39 presses the movable contact plate panel 42 in the left direction in the figure, and the movable contact portion 42a, which is a butt contact, strikes the fixed contact portion 43a of the fixed contact plate 43 to electrically Conducted to.
  • the one piece 36a of the movable piece 36 is separated from the iron core 33 by the biasing force of the hinge spring (not shown), and between the common terminal and the fixed terminal 43b.
  • the switch circuit is turned off.
  • Patent Document 1 Japanese Patent Laid-Open No. 11-016474
  • an electromagnetic relay of the present invention includes a housing having a hollow portion therein, an electromagnet having a coil wound around an iron core disposed in the hollow portion, A fixed contact fixed in the cavity, and a movable contact supported in the cavity and separable from the fixed contact;
  • the fixed contact has a sliding contact piece that can slide in a state in which the movable contact is elastically contacted, and the movable contact that contacts and separates from the iron core is in a state of being in contact with the sliding contact piece. It is characterized by being slidable with.
  • the sliding contact piece is electrically connected to a fixed terminal protruding outside the casing, and the movable contact protrudes outside the casing. It is electrically connected to a common terminal.
  • the fixed contact is made of a metal plate having elasticity, and a terminal connection portion embedded in a part of the casing and connected to the fixed terminal is provided.
  • the sliding contact piece is formed to extend from the terminal connection portion into the hollow portion, and the sliding contact piece has a free end-shaped sliding piece bent into a substantially U shape, The movable contact is elastically brought into contact with the sliding piece so as to be slidable.
  • the fixed contact is formed with a pair of sliding contact pieces extending into the cavity portion at both ends of the terminal connection portion.
  • a pair of sliding contact pieces are bent in a substantially U shape on opposite sides to form a pair of sliding pieces that are elastically opposed to each other, and the movable contact is elastically contacted between the pair of sliding pieces. It is characterized by being sandwiched and made slidable.
  • the movable contact is made of an elastic metal material and can be supported by a movable contact support formed in the cavity of the casing.
  • the contact portion is formed extending from the support portion to the fixed contact side, and the contact portion rotates with the support portion serving as a fulcrum by moving the movable contact toward and away from the iron core.
  • the contact point is separated from the fixed contact.
  • the fixed contact is a first fixed to which the contact portion can be electrically connected in an initial state in which the movable contact is separated from the iron core.
  • the contact portion is provided with a second fixed contact that can be electrically connected.
  • the housing has the first and second fixed terminals embedded and supported, and the first fixed contact is electrically connected to the first fixed terminal, The second fixed contact is electrically connected to the second fixed terminal.
  • the fixed contact of the electromagnetic relay of the present invention has a sliding contact piece that can slide while the movable contact is elastically contacted, and the movable contact that contacts and separates from the iron core is a sliding contact piece. Since it is slidable in the state of being in contact with it, foreign matters such as metal powder adhering to the fixed contact or the movable contact can be cleaned by scrubbing the movable contact. Therefore, the electrical connection between the movable contact and the fixed contact can be stabilized.
  • the sliding contact piece is electrically connected to the fixed terminal that protrudes outside the housing
  • the movable contact is electrically connected to the common terminal that protrudes outside the housing. Switch circuit switching by contact can be taken out via each terminal.
  • the fixed contact also has elastic metal plate force, and has a terminal connection part that is embedded in a part of the housing and connected to the fixed terminal, and this terminal connection part force forms a sliding contact piece that extends into the cavity.
  • the sliding contact piece has a free end-shaped sliding piece bent in a substantially U shape, and the movable contact is elastically contacted with the sliding piece so that the sliding contact piece can slide.
  • the movable contact and the fixed contact can be reliably connected, and the adhered foreign matter can be reliably removed.
  • the fixed contact is formed with a pair of sliding contacts extending from both ends of the terminal connection portion into the cavity, and the pair of sliding contacts is formed in a substantially U shape on the side facing each other.
  • a pair of sliding pieces that are bent and elastically opposed to each other is formed, and the movable contact is clamped between the pair of sliding pieces so that they can slide.
  • the movable contact and the fixed contact can be stably connected.
  • the movable contact also has an elastic metal material force, and a support portion that can be supported by the movable contact support portion formed in the cavity of the housing is formed, and extends from this support portion to the fixed contact side.
  • the contact part is formed, and the movable contact makes contact with the iron core, and the contact part rotates with the support part as a fulcrum to contact and separate from the fixed contact. By energizing the coil, it is attracted to the iron core and can be stably electrically connected to the fixed contact.
  • the fixed contact is a first fixed contact that can be electrically connected to the contact portion in an initial state where the movable contact is also separated from the iron core force, and the first fixed contact when the movable contact is attracted to the iron core.
  • the second fixed contact that can be electrically connected to the contact part that is separated from the center is arranged, so that the movable contact is separated from the iron core, so that the common terminal, the first fixed contact, and the second fixed contact Two circuits can be switched to and from the terminal. Therefore, it is possible to provide an electromagnetic relay capable of switching costs by switching a plurality of circuits with a small number of parts.
  • first and second fixed terminals are embedded and supported in the housing, the first fixed contact is electrically connected to the first fixed terminal, and the second fixed contact is electrically connected to the second fixed terminal. Therefore, switching of the switch circuit between the movable contact and the first and second fixed contacts can be reliably taken out through the first and second fixed terminals.
  • FIG. 1 is a cross-sectional view of an essential part for explaining the electromagnetic relay of the present invention
  • FIG. 1 is a cross-sectional view of an essential part for explaining the electromagnetic relay of the present invention
  • FIGS. 1 and 2 an electromagnetic relay 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
  • a substantially cubic housing 2 made of a resin material and having a hollow portion 2a is provided. ing .
  • the cavity 2a of the housing 2 is formed so as to be surrounded by the first to fourth side walls 2b to 2e, the front side wall 2f, and the rear side wall 2g.
  • a first fixed contact that is partially formed thicker than the thickness of the rear side wall 2g and can support a first fixed contact 9 described later.
  • Support section 3 is provided on the left side of the cavity 2a of the housing 2 shown in FIG. 1, there is a second fixed contact support 4 that contacts the second side wall 2c on the left and can support a second fixed contact 10 described later.
  • the inner surface force of the front side wall 2f is also formed to protrude at a predetermined height.
  • an electromagnet 5 is disposed in a substantially central portion on the front side wall 2f in the hollow portion 2a.
  • the electromagnet 5 is formed by winding a coil 5b on an iron core 5a made of a magnetic material, a plurality of turns. Configured. Then, by applying a predetermined current to coil 5b, coil 5b is excited and iron The core 5a is now magnetized! /
  • a rod-like movable contact support portion 6 is formed on the right side in the cavity 2a shown in FIG. 1, and the movable contact support portion 6 has an elastic conductive line panel force. 7 is supported.
  • the movable contact 7 has a twisted coil panel force in which a portion obtained by winding a part of a wire panel having a predetermined thickness in a coil shape is used as a support portion 7a, and the support portion 7a is connected to the movable contact support portion 6 in the cavity 2a. Insertion is supported.
  • the movable contact 7 is formed with a contact portion 7b extending from the support portion 7a with a predetermined length in contact with first and second fixed contacts 9, 10 described later. That is, the movable contact 7 is formed with a contact portion 7b extending from the support portion 7a in one direction on the first and second fixed contacts 9, 10 described later.
  • the movable contact 7 having the support 7a through the movable contact support 6 is extended to the other side of the support 7a and is connected to a later-described common terminal 13 embedded and supported in the front side wall 2f of the housing 2.
  • a connectable terminal connection 7c is formed.
  • the movable contact 7 has an obtuse angle oc between the contact portion 7b and the terminal connection portion 7c with the support portion 7a interposed therebetween, and the shape is substantially L-shaped.
  • the movable contact 7 having a twisted coil panel force has a movable plate 8 made of a magnetic material at a position extending to the first and second fixed contacts 9 and 10 described later and facing the iron core 5a of the electromagnet 5.
  • the movable contact 7 and the movable plate 8 are integrated by being fixed by spot welding or the like.
  • the movable plate 8 has a suction portion 8a formed in a portion facing the iron core 5a, and the suction portion 8a is formed larger than the area of the iron core 5a facing the suction portion 8a.
  • the movable plate 8 is positioned outside the movable contact 7 and is bent in a substantially L shape similarly to the fixed contact 7, and extends from the support portion 7a of the movable contact 7 by a predetermined length downward in the figure.
  • a fixed portion 8b is formed, and the fixed portion 8b is sandwiched and supported between the terminal connecting portion 7c of the movable contact 7 and the first side wall 2b of the housing 2.
  • the first fixed contact 9 is embedded in the first fixed contact support 3 in the cavity 2 a of the housing 2.
  • the contact portion 7b of the movable contact 7 in the initial state in which the movable plate 8 is separated from the iron core 5a is rotated upward with respect to the first fixed contact 9 in the figure. It can be connected electrically.
  • the first fixed contact 9 is an elastic metal plate such as a phosphor bronze plate, and is embedded in the first fixed contact support 3 of the housing 2 and connected to a first fixed terminal 14 to be described later.
  • a pair of sliding contact pieces 9b, 9b are formed from the left and right end portions of the terminal connection portion 9a shown in FIG.
  • the pair of sliding contact pieces 9b, 9b are bent in a substantially U shape on opposite sides to form a pair of free end-shaped sliding pieces 9c, 9c, and the pair of sliding pieces 9c 9c are elastically opposed to each other.
  • the contact portion 7b of the rotating movable contact 7 is sandwiched between the pair of sliding pieces 9c, 9c that are in contact with each other so that they can slide.
  • the second fixed contact 10 is embedded and supported in the second fixed contact support 4 in the cavity 2a, and when the movable plate 8 is adsorbed to the iron core 5a by energizing the coil 5b, the movable contact 7
  • the contact portion 7b of FIG. 6 is rotated in the direction of arrow A in the lower part of the figure so that it can be electrically connected to the second fixed contact 10!
  • the second fixed contact 10 is formed of the same material and shape as the first fixed contact 9, and the terminal connection portion 10a is embedded and supported in the second fixed contact support portion 4 so as to be described later. 15, a pair of sliding contact pieces 10b, 10b are integrally formed extending from both ends of the terminal connection portion 10a upward in the figure.
  • the pair of sliding contact pieces 10b and 10b are formed as free end-shaped sliding pieces 10c and 10c which are bent in a U shape and elastically contact each other.
  • a contact portion 7b of the rotating movable contact 7 is sandwiched between the pair of sliding pieces 10c, 10c facing each other so as to be slidable.
  • the first lead wire 5c and the second lead wire 5d are drawn out from the coil 5b of the electromagnet 5.
  • the first and second input terminals 11 and 12 are embedded in the front side wall 2f of the housing 2 so as to protrude outward, and the first lead wire 5c is connected to the first input terminal 11 and the second lead wire. 5d is electrically connected to the second input terminal 12!
  • the front side wall 2f has a common terminal electrically connected to the terminal connection 7c of the movable contact 7. 13 is embedded and formed to protrude outward.
  • the first and second fixed terminals 14 and 15 are embedded in the front side wall 2f of the housing 2 so as to project outward.
  • the first fixed terminal 14 is electrically connected to the terminal connection portion 9a of the first fixed contact 9 embedded and supported in the first fixed contact support portion 3 of the housing 2.
  • the second fixed terminal 15 is electrically connected to an attachment notation 10 a of the second fixed contact 10 embedded and supported in the second fixed contact support portion 4 of the housing 2.
  • the adsorbing portion 8a of the movable plate 8 is separated from the iron core 5a by a predetermined dimension.
  • the movable contact 7 in the initial state is such that the contact portion 7b is connected to the first fixed contact 9, and the common terminal 13 and the first fixed terminal 14 are electrically connected via the movable contact 7 and the first fixed contact 9. Connected.
  • the contact portion 7b of the movable contact 7 in the initial state rotates to the lower side of the arrow A shown in FIG. 1 against the elastic force of the line panel. Then, the contact portion 7b separated from the first fixed contact 9 slides between a pair of sliding pieces 10c that are elastically opposed to each other, and the movable contact 7 is connected to the second fixed contact 10, and the common terminal 13 and The second fixed terminal 15 is electrically connected via the movable contact 7 and the second fixed contact 10, and the switch circuit is switched.
  • the electromagnetic relay 1 of the present invention has a contact portion 7b of the movable contact 7 on the sliding pieces 9c and 10c formed on the sliding contact pieces 9b and 10b of the first and second fixed contacts 9 and 10. Since it slides, foreign matter such as metal powder or dust generated by an arc or the like can be removed on each sliding piece 9c, 10c.
  • the contact portion 7b of the movable contact 7 slides between the pair of sliding pieces 9c, 9c and 10c, 10c facing each other, so that even if an external force is applied with vibrations, etc. Connection can be stabilized. (Can reduce the occurrence of chattering and other problems)
  • two fixed contacts first and second fixed contacts 9, 10 are provided. As described above, only one of them is installed, and it is connected to one fixed contact by rotating either above or below the contact 7b of the movable contact 7. It may be a good one.
  • the sliding contact pieces 9b and 10b of the first and second fixed contacts 9 and 10 have been described as being bent in a substantially U shape, but the contact portion 7b of the movable contact 7 can slide and slide. Good for sliding contacts. (For example, the contact part 7b slides on an inclined surface formed by inclining one metal plate.)
  • first and second fixed contacts 9, 10 have the same U-shaped sliding contact piece 9b, 10b as opposed to each other.
  • the movable contact 7 may be slid with respect to the contact pieces 9b and 10b.
  • FIG. 1 is a cross-sectional view of a main part for explaining an electromagnetic relay of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line 2-2 in FIG.
  • FIG. 3 is a perspective view illustrating a conventional electromagnetic relay.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)

Abstract

La présente invention concerne un relais électromagnétique capable de fournir une connexion et dans lequel un contact mobile est toujours stabilisé à un contact fixe en nettoyant les matières étrangères générées, par glissement du contact mobile sur le contact fixe. Le relais électromagnétique (1) est muni d'un boîtier (2) ayant une cavité (2a) en son intérieur, un électro-aimant (5) dans lequel une bobine (5b) est enroulée autour d'un centre en fer (5a) placé dans la cavité (2a), ainsi que le contact mobile (7), qui peut être amené en contact et éloigné d'un premier ou d'un second point fixe (9 ou 10) en étant amené en contact ou éloigné du centre en fer (5a). Le contact fixe (9) est muni d'un contact coulissant (9b) capable de glisser dans un état où le contact mobile (7) est mis en contact de manière élastique avec le contact coulissant. Le contact mobile (7) peut glisser dans un état où il est mis en contact de manière élastique avec le contact coulissant (9b) et en contact ou éloigné du centre en fer (5a).
PCT/JP2006/317176 2005-09-02 2006-08-31 Relais électromagnétique WO2007026800A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-254889 2005-09-02
JP2005254889A JP2007066842A (ja) 2005-09-02 2005-09-02 電磁リレー

Publications (1)

Publication Number Publication Date
WO2007026800A1 true WO2007026800A1 (fr) 2007-03-08

Family

ID=37808884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/317176 WO2007026800A1 (fr) 2005-09-02 2006-08-31 Relais électromagnétique

Country Status (2)

Country Link
JP (1) JP2007066842A (fr)
WO (1) WO2007026800A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102074421A (zh) * 2011-01-12 2011-05-25 任国良 磁保持继电器及其连接方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5560233A (en) * 1978-10-31 1980-05-07 Matsushita Electric Works Ltd Relay
JPS5745144U (fr) * 1980-08-27 1982-03-12
JPS60194850U (ja) * 1984-06-06 1985-12-25 日本電気株式会社 電磁継電器
JPS62152334U (fr) * 1986-03-19 1987-09-26

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5560233A (en) * 1978-10-31 1980-05-07 Matsushita Electric Works Ltd Relay
JPS5745144U (fr) * 1980-08-27 1982-03-12
JPS60194850U (ja) * 1984-06-06 1985-12-25 日本電気株式会社 電磁継電器
JPS62152334U (fr) * 1986-03-19 1987-09-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102074421A (zh) * 2011-01-12 2011-05-25 任国良 磁保持继电器及其连接方法

Also Published As

Publication number Publication date
JP2007066842A (ja) 2007-03-15

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