WO2019180934A1 - 接点開閉器 - Google Patents

接点開閉器 Download PDF

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Publication number
WO2019180934A1
WO2019180934A1 PCT/JP2018/011798 JP2018011798W WO2019180934A1 WO 2019180934 A1 WO2019180934 A1 WO 2019180934A1 JP 2018011798 W JP2018011798 W JP 2018011798W WO 2019180934 A1 WO2019180934 A1 WO 2019180934A1
Authority
WO
WIPO (PCT)
Prior art keywords
movable
contact
iron core
leaf spring
fixed
Prior art date
Application number
PCT/JP2018/011798
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
小林　篤志
勝俊 五十嵐
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/011798 priority Critical patent/WO2019180934A1/ja
Priority to CN201880091484.1A priority patent/CN111886667B/zh
Priority to JP2018564429A priority patent/JP6540919B1/ja
Publication of WO2019180934A1 publication Critical patent/WO2019180934A1/ja

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Classifications

    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements

Definitions

  • the present invention relates to a contact switch used for closing or opening between a power source and a load.
  • a contact switch is a movable switch that is moved by moving a movable core connected to and through a crossbar by moving the movable core to and from the fixed core by exciting an operating coil provided on the fixed core. It is a device that opens and closes an electric circuit by moving a movable contact provided on a contact to and from a fixed contact.
  • Patent Document 1 a movable contact having a movable contact joined thereto, a fixed contact having a fixed contact opposed to the movable contact facing the movable contact, and a predetermined contact when the movable contact and the fixed contact are in contact with each other.
  • a contact switch comprising a pressing spring for maintaining pressure and a movable leaf spring that transmits the spring pressure of the pressing spring to a movable contact.
  • the movable contact and the movable leaf spring are each guided by a cross bar.
  • the movable leaf spring transmits the force transmitted from the cross bar via the push spring to the movable contact.
  • the movable contact By transmitting to the back of the movable contact, it has a function to prevent bending stress from being generated in the movable contact.
  • the movable contact and the movable leaf spring are separately supported by the crossbar. Therefore, the contact position between the movable leaf spring and the movable contact is determined by combining the displacement between the movable contactor and the crossbar, and the displacement between the movable leaf spring and the crossbar as the displacement between the movable contactor and the movable leaf spring. Therefore, the force transmitted from the displacement to the movable contact by the positional deviation varies. Due to this variation, the contact resistance between the movable contact and the fixed contact is likely to vary, and a large amount of heat may be generated between the contacts during energization, which may shorten the contact life.
  • the present invention has been made in view of the above-described problems, and it is an object of the present invention to reduce variation in force transmitted from a push spring to a movable contact and to stabilize contact resistance between the movable contact and the fixed contact. .
  • a contact switch is disposed corresponding to a fixed core, a fixed contact including a pair of fixed contacts, and a fixed core, and is driven by the fixed core.
  • a movable iron core, a movable contact provided on the lower surface side with a pair of movable contacts provided to face the fixed contact, and a movable leaf spring provided with a pressing portion contacting the back side of the position where the movable contact is provided in the movable contact A movable support that is disposed so as to abut on the central portion of the movable leaf spring and transmits a driving force of the movable iron core to the movable leaf spring.
  • a groove-shaped notch portion extending in the vertical direction is provided, and the movable leaf spring includes an engaging portion that engages with the notch portion.
  • the contact switch according to the present invention in a configuration in which the movable leaf spring presses the movable contact back surface side of the movable contact, the displacement of the movable leaf spring relative to the movable contact can be suppressed, and the driving force of the movable iron core is stabilized.
  • it can be supplied to both movable contacts, and the contact resistance between the movable contact and the fixed contact is stabilized.
  • FIG. 1 is a perspective view of a contact switch according to Embodiment 1.
  • FIG. 3 is a top view of a movable contact in the contact switch according to Embodiment 1.
  • FIG. It is a perspective view of the movable leaf
  • FIG. 8 is a cross-sectional view of the contact switch in the contact switch according to the first embodiment of the present invention. It is a perspective view showing the engagement state of the movable leaf
  • FIG. 1 is a perspective view showing a contact switch according to Embodiment 1 including a fixed contact.
  • a fixed contact 7 is provided on the fixed contact 8.
  • the movable contact 2 is provided with a movable contact 3, and the movable contact 2 is connected to the movable leaf spring 1, the movable support 4 and the cross bar 5.
  • FIG. 2 is a top view of the movable contact when the contact switch according to the first embodiment is viewed from above. 6 to 8 described later are cross-sectional views when the contact switch is cut along the line AA in FIG.
  • the X direction, the Y direction, and the Z direction are defined as directions orthogonal to each other as shown in FIGS.
  • the X direction is a direction in which the pair of movable contacts 3 and the pair of fixed contacts 7 are arranged.
  • the Z direction is the direction in which the movable contact moves. Also, the positive side in the Z direction is defined as up and the negative side is defined as down.
  • FIG. 3 is a perspective view showing the movable leaf spring 1 of the contact switch according to Embodiment 1 of the present invention.
  • the movable leaf spring 1 is formed so that the X direction is the longitudinal direction.
  • the movable leaf spring 1 includes engaging portions 1A that are bent downward and extend on both sides of the central portion in the longitudinal direction.
  • the movable leaf spring 1 includes a pressing portion 1B having a shape bent in a V shape for contacting the movable contact 2 near both ends in the longitudinal direction.
  • the movable leaf spring 1 includes an L-shaped bent portion 1C that is bent upward and extends on both sides in the Y direction between the longitudinal center portion and both longitudinal end portions.
  • the movable leaf spring 1 is made of stainless steel, and is formed by press working using a stainless steel flat plate as a base material.
  • FIG. 4 is a perspective view showing an engaged state between the movable leaf spring 1 and the movable contact 2 of the contact switch according to the first embodiment of the present invention.
  • the movable contact 2 is made of copper.
  • the movable contact is formed such that the X direction is the longitudinal direction.
  • the movable contact 2 includes groove-shaped notches 2A extending in the Z direction on both sides in the longitudinal center.
  • the movable contact 3 is joined to the lower surface of the movable contact 2 near both ends in the longitudinal direction.
  • the pressing portion 1 ⁇ / b> B of the movable leaf spring 1 comes into contact with the upper surface of the movable contact 2 at a position corresponding to the movable contact 3.
  • the central L-shaped engaging portion 1 ⁇ / b> A of the movable leaf spring 1 is engaged with the notch portion 2 ⁇ / b> A of the movable contact 2.
  • the engaging portion 1A moves along the groove-shaped notch portion 2A.
  • the movable leaf spring 1 and the movable contact 2 are positioned.
  • the position of the pressing portion 1B of the movable leaf spring 1 and the contact portion of the movable contact 2 is prevented from changing in the X direction.
  • the central L-shaped engaging portion 1A of the movable leaf spring 1 and the cutout portion 2A of the movable contact 2 do not affect the movement of the movable leaf spring 1 and the movable contact 2 in the Z direction.
  • FIG. 5 is a perspective view showing an engaged state of the movable leaf spring 1, the movable contact 2, and the connectable support 4 of the contact switch according to the first embodiment of the present invention.
  • the movable leaf spring 1 is positioned by the contactable support 4 by the engagement between the L-shaped bent portion 1 ⁇ / b> C and the U-shaped standing portion 4 ⁇ / b> C of the contactable support 4.
  • by providing four L-shaped bent portions 1C it is possible to reduce the rotational deviation of the movable leaf spring 1 in the XY direction with respect to the contactable support 4.
  • the contactable support 4 is made of stainless steel and is formed by pressing.
  • FIG. 6 is a cross-sectional view of the contact switch of the contact switch according to Embodiment 1 of the present invention when the contact is opened.
  • the movable iron core 9 is integrated with the cross bar 5.
  • a push spring 6 is inserted between the spring receiving portion 5A of the cross bar 5 and the spring receiving portion 4A of the connectable support 4, and the press spring 6 biases the connectable support 4 downward.
  • the movable contact 2 and the movable leaf spring 1 are sandwiched between the upper surface 5B of the cross bar 5 and the intersecting portion 4B of the contactable support 4 by the urging force of the pressing spring 6.
  • FIG. 7 is a cross-sectional view of the contact switch according to Embodiment 1 of the present invention when the contact is opened.
  • the distance L1 between the contact surfaces of the movable iron core 9 and the fixed iron core 10 is longer than the distance L2 between the contact surfaces of the movable contact 3 and the fixed contact 7.
  • the fixed iron core 10 is excited by a drive current that flows through an operation coil (not shown).
  • the crossbar 5 integrated with the movable iron core 9, the movable leaf spring 1 combined with the crossbar 5, and the movable contact 2 The connectable support 4 and the push spring 6 move toward the fixed iron core 10 in conjunction with the movable iron core 9.
  • the movable iron core 9 When the movable iron core 9 approaches the fixed iron core 10 by a distance L2 from the initial opening position, the movable contact 3 and the fixed contact 7 come into contact with each other, and the contact is closed. Further, when the movable iron core 9 is attracted to the fixed iron core 10 and the movable iron core 9 moves from the initial opening position in the direction of the fixed iron core 10 by the distance L1, the complete contact is made when the movable iron core 9 and the fixed iron core 10 come into contact with each other. The circuit is closed.
  • FIG. 8 is a cross-sectional view of a complete contact closing state of the contact switch according to the first embodiment of the present invention.
  • the movable iron core 9 is attracted by the fixed iron core 10 and moved in the direction of the fixed iron core 10 by the distance L2
  • the movable contact 3 comes into contact with the fixed contact 7, and no longer moves in the direction of the fixed iron core 10.
  • the movable iron core 9 is moved by the distance L1
  • the movable contact 2 is positioned away from the upper surface 5B of the crossbar 5 by the distance L1-L2.
  • the movable contact 2 receives the pressures P2 and P3 through the movable plate spring 1. And the position where the reaction force applied from the fixed contact 7 is received coincides. Thereby, the internal stress to the movable contact 2 due to the contact pressure is reduced, and the movable contact 2 is restrained from being deformed by warping and reducing the contact pressure.
  • the movable contact 3 to which the pressure P2 and P3 are received from the pressing portion 1B of the movable leaf spring 1 and the reaction force from the fixed contact 7 is applied.
  • the displacement of the movable contact spring 2 from the movable leaf spring 1 is less effective in preventing the deformation of the movable contact 2 and the contact resistance tends to vary.
  • the center L-shaped engagement portion 1 ⁇ / b> A of the movable leaf spring 1 is fitted into the notch portion 2 ⁇ / b> A of the movable contact 2.
  • the positional deviation between the movable leaf spring 1 and the movable contact 2 is suppressed.
  • stable contact pressure can be supplied, and abnormal heat generation between the contacts of the current-carrying part can be suppressed by stabilizing the contact resistance between the contacts, thereby suppressing the abnormal consumption of the contacts.
  • the displacement of the movable leaf spring 1 with respect to the movable support 4 is suppressed by the engagement of the L-shaped bent portion 1C of the movable leaf spring 1 and the movable support 4.
  • the contact part of the fixed contact 7 and the movable contact 3 is stabilized, and an effect of suppressing abnormal heat generation and suppressing abnormal consumption of the contact is obtained.
  • FIG. 1 The configuration of the movable leaf spring 1, the movable contact 2, and the contactable support 4 of the contact switch according to the second embodiment of the present invention will be described.
  • the X direction, the Y direction, and the Z direction are defined as directions orthogonal to each other as illustrated in FIGS.
  • the X direction is a direction in which the pair of movable contacts 3 and the pair of fixed contacts 7 are arranged.
  • the Z direction is the direction in which the movable contact moves.
  • the Z direction positive side may be expressed as up, and the negative side may be expressed as down.
  • FIG. 9 is a perspective view showing an engaged state between the movable leaf spring 1 and the movable contact 2 of the contact switch according to the second embodiment of the present invention.
  • the movable leaf spring 1 includes an L-shaped engaging portion 1A extending on the negative side in the Z direction provided on both sides in the Y direction of the X direction central portion, a pressing portion 1B provided on both ends in the X direction, and a central portion in the X direction. And an L-shaped bent portion 1 ⁇ / b> C extending on the positive side in the Z direction and provided on the Y direction side between both ends in the X direction.
  • the movable contact 3 is joined to the lower surface of the movable contact 2 near both ends in the X direction.
  • the pressing portion 1 ⁇ / b> B of the movable leaf spring 1 is a place in contact with the upper surface of the movable contact 2 at a position corresponding to the movable contact 3.
  • the movable leaf spring 1 and the movable contact 2 are positioned by engaging the center L-shaped engaging portion 1 ⁇ / b> A of the movable leaf spring 1 with the notch 2 ⁇ / b> A of the movable contact 2. With this positioning structure, the pressing portion 1B of the movable leaf spring 1 and the contact portion of the movable contact 2 are prevented from changing in the X direction.
  • FIG. 10 is a perspective view showing an engaged state of the movable leaf spring 1, the movable contact 2, and the connectable support 4 of the contact switch according to the second embodiment of the present invention.
  • the movable leaf spring 1 is positioned by the contactable support 4 by the engagement between the L-shaped bent portion 1 ⁇ / b> C and the U-shaped standing portion 4 ⁇ / b> C of the contactable support 4. Thereby, it is possible to reduce the displacement of the movable leaf spring 1 in the X direction with respect to the contactable support 4.
  • the movable plate spring 1 is displaced from the connectable support 4 in the XZ direction in the rotation direction and rattling. It is possible to suppress. As in the first embodiment, this makes it possible to supply a stable contact pressure, stabilize the contact resistance between the contacts, stabilize the amount of heat generated between the contacts of the current-carrying part, and suppress excessive product heat generation. Play.
  • the movable leaf spring 1 of the contact switch includes an L-shaped bent portion 1C in the first and second embodiments as shown in the perspective view of FIG. It is possible to have no form. In this case, it is necessary to separately provide a mechanism for positioning at least one of the movable plate spring 1 and the movable contact 2 with respect to the contactable support 4. Since the portion 1 ⁇ / b> A is fitted into the notch portion 2 ⁇ / b> A of the movable contact 2, the positional deviation between the movable leaf spring 1 and the movable contact 2 can be suppressed. As a result, stable contact pressure can be supplied, and abnormal heat generation between the contacts of the current-carrying part can be suppressed by stabilizing the contact resistance between the contacts, thereby suppressing the abnormal consumption of the contacts.
  • 1 Movable leaf spring 1A engaging part, 1B pressing part, 1C bending part, 2 movable contactor, 2A notch part, 3 movable contact point, 4 contactable support, 4A spring receiving part, 4B crossing part, 4C standing part 5 crossbar, 5A spring receiving portion, 5B top surface, 6 push spring, 7 fixed contact, 8 fixed contact, 9 movable iron core, 10 fixed iron core.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
PCT/JP2018/011798 2018-03-23 2018-03-23 接点開閉器 WO2019180934A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2018/011798 WO2019180934A1 (ja) 2018-03-23 2018-03-23 接点開閉器
CN201880091484.1A CN111886667B (zh) 2018-03-23 2018-03-23 触点开闭器
JP2018564429A JP6540919B1 (ja) 2018-03-23 2018-03-23 接点開閉器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/011798 WO2019180934A1 (ja) 2018-03-23 2018-03-23 接点開閉器

Publications (1)

Publication Number Publication Date
WO2019180934A1 true WO2019180934A1 (ja) 2019-09-26

Family

ID=67212094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/011798 WO2019180934A1 (ja) 2018-03-23 2018-03-23 接点開閉器

Country Status (3)

Country Link
JP (1) JP6540919B1 (zh)
CN (1) CN111886667B (zh)
WO (1) WO2019180934A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS449554Y1 (zh) * 1968-04-10 1969-04-18
JPS4974461U (zh) * 1972-10-17 1974-06-27
JPS5349677U (zh) * 1976-09-30 1978-04-26
JP2011210576A (ja) * 2010-03-30 2011-10-20 Mitsubishi Electric Corp 接点開閉器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES259619A1 (es) * 1959-07-17 1960-12-01 Normacen Sa Perfeccionamientos en contadores electromagneticos
JPS4844513B1 (zh) * 1969-02-28 1973-12-25
JPS5013965U (zh) * 1973-06-01 1975-02-13
BR112012019683B1 (pt) * 2010-02-05 2019-07-02 Siemens Aktiengesellschaft Suporte para Contenção de um Elemento de Contato, Carregador Operacional para Interromper e Fechar um Circuito de Suprimento de Energia e Dispositivo de Comutação eletromagnética
DE102015212818A1 (de) * 2015-07-08 2017-01-12 Te Connectivity Germany Gmbh Kontaktbrückenanordnung für ein elektrisches Schaltelement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS449554Y1 (zh) * 1968-04-10 1969-04-18
JPS4974461U (zh) * 1972-10-17 1974-06-27
JPS5349677U (zh) * 1976-09-30 1978-04-26
JP2011210576A (ja) * 2010-03-30 2011-10-20 Mitsubishi Electric Corp 接点開閉器

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Publication number Publication date
CN111886667B (zh) 2021-03-12
JP6540919B1 (ja) 2019-07-10
JPWO2019180934A1 (ja) 2020-04-30
CN111886667A (zh) 2020-11-03

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