WO2012006812A1 - Disjoncteur à boîtier moulé miniature - Google Patents

Disjoncteur à boîtier moulé miniature Download PDF

Info

Publication number
WO2012006812A1
WO2012006812A1 PCT/CN2010/077064 CN2010077064W WO2012006812A1 WO 2012006812 A1 WO2012006812 A1 WO 2012006812A1 CN 2010077064 W CN2010077064 W CN 2010077064W WO 2012006812 A1 WO2012006812 A1 WO 2012006812A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
circuit breaker
coil
trip system
plastic case
Prior art date
Application number
PCT/CN2010/077064
Other languages
English (en)
Chinese (zh)
Inventor
南寅
Original Assignee
北京翠祥电器元件有限公司
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 北京翠祥电器元件有限公司 filed Critical 北京翠祥电器元件有限公司
Publication of WO2012006812A1 publication Critical patent/WO2012006812A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2481—Electromagnetic mechanisms characterised by the coil design

Definitions

  • the invention relates to a small plastic shell type circuit breaker, belonging to the field of low voltage electrical appliances.
  • circuit breakers have become an inevitable trend in the development of electrical appliances.
  • the size of miniature circuit breakers widely used in the market is generally 18mm (two basic modules), but some products reduce the width of the circuit breaker at the expense of various technical performance indicators of the circuit breaker.
  • the present invention is directed to an ultra-thin small-sized plastic case circuit breaker which is simple in structure, high in reliability, and low in cost. It can reduce the width of the circuit breaker and improve the space utilization of the switch under the condition of protecting the original technical performance.
  • the utility model relates to a small plastic shell type circuit breaker, which comprises an insulating plastic shell and an inlet and outlet terminal disposed therein, a thermal tripping system, a magnetic tripping system, a dynamic and static contact, an operating mechanism and an arc extinguishing system, and the operating mechanism drives the movable contact to realize
  • the circuit is closed and disconnected;
  • the magnetic trip system consists of a magnetic yoke, a core, a sleeve and a coil, one end of which is connected to the static contact via a magnetic yoke or directly to the stationary contact; the other end is connected to the thermal disconnector Connected or connected to a terminal, characterized by:
  • the coil of the magnetic trip system is a non-circular structure of at least one turn made of copper enameled wire.
  • the core of the magnetic trip system is made of a non-cylindrical magnetically permeable material.
  • the sleeve of the magnetic trip system is a non-circular structure.
  • the coil, the iron core and the sleeve in the magnetic tripping system all adopt a square structure.
  • the invention optimizes the components in the insulated plastic casing of the miniature circuit breaker, especially the magnetic tripping system, and the coil, the casing, the moving iron core and the static iron core in the magnetic tripping system adopt a square structure, compared with the traditional The circular structure, under the premise of having the same current-carrying density, that is, under the condition of having the same cross-sectional area, the square structure is smaller in width than the coil, the casing, the moving iron core, and the static iron core of the circular structure. Therefore, the magnetic tripping system can be placed inside the 9mm wide insulated housing under the condition of temperature rise. Compared with the traditional 18mm width product, the circuit breaker width is reduced by 50%, which has high operational reliability and simple structure. , low cost and other advantages.
  • Figure 1 is an outline view of a small plastic case circuit breaker
  • Figure 2 shows the internal structure of a small plastic case circuit breaker
  • Figure 3 is a simplified diagram of a magnetic tripping system for a small plastic case circuit breaker.
  • the invention provides a 9mm wide and ultra-thin small plastic shell circuit breaker with simple structure, high reliability and low cost.
  • miniaturization means that the size of the circuit breaker casing and its internal available space are significantly reduced. Therefore, miniaturization of the circuit breaker must require miniaturization of each component that constitutes the circuit breaker, including the arc extinguishing system. , contact system, operating mechanism, magnetic trip system, thermal trip system, etc.
  • miniaturization is not simply a reduction in the size of components to meet the requirements.
  • the premise of miniaturization is that the flow capacity of the electrical appliance cannot be sacrificed, which is accurately a unit volume flow. (including current carrying capacity and short-circuit breaking capacity), and even improved.
  • the operating mechanism should be optimized according to the size of the internal space of the circuit breaker housing, that is, under the requirements of the space structure, short circuit, overload fault and manual division and closing need to ensure the reliable operation of the operating mechanism ;
  • the circuit breaker case is a closed space, which is easy to cause insufficient air flow and poor heat dissipation conditions.
  • the reduction of the shell volume reduces the heat dissipation area of the component, and the increase in component density leads to an increase in the heat per unit volume.
  • the current of each terminal of the circuit breaker is equal to In (the rated current of the circuit breaker), the temperature rise of the terminal connecting the external conductor should not Above 60K, the rated current should not exceed 13W per pole when the rated current is 63 ⁇ .
  • the internal volume of the circuit breaker becomes smaller.
  • the most important influence on the temperature rise is the magnetic tripping system.
  • the current carrying density Q of the coil in the magnetic tripping system should be less than 7A/mm 2 , ie :
  • the cross-sectional area of the coil is generally circular, and the moving and static cores also adopt a circular structure.
  • the coil, the moving static core and the reaction spring of the small plastic case type circuit breaker magnetic tripping system of the present invention adopt a non-circular structure.
  • the design of the invention absorbs the advanced design concepts at home and abroad, and optimizes the design and modular design of the overall structure of the circuit breaker, the shape of the components, the transmission mechanism, the closing spring and the like by means of the computer three-dimensional design software and the motion analysis software.
  • the overall performance and mechanical characteristics of the circuit breaker are more fully guaranteed.
  • the invention comprises an insulating plastic outer casing and an inlet and outlet terminal disposed therein, a thermal tripping system, a magnetic tripping system, a dynamic and static contact, an operating mechanism and an arc extinguishing system, and the operating mechanism drives the movable contact to realize circuit closing and breaking;
  • Trip system The magnetic coil, the iron core, the sleeve and the coil are composed of one end of the coil connected to the static contact via the magnetic pole or directly connected to the static contact; the other end is connected to the thermal stripper or connected to the terminal, wherein: the magnetic The coil of the trip system is a non-circular structure of at least one turn made of copper enameled wire.
  • the core of the magnetic trip system is made of a non-cylindrical magnetically permeable material.
  • the sleeve of the magnetic trip system is a non-circular structure.
  • the 9mm wide and ultra-thin small plastic case circuit breaker mainly comprises: a plastic insulating case and left and right terminals arranged therein, an operating mechanism, a magnetic trip system, a thermal trip system, and a static and dynamic contact System and arc extinguishing system.
  • the left terminal is connected to the magnetic trip system;
  • the right terminal is connected to the thermal trip system; and
  • the magnetic trip system and the thermal trip system are electrically connected by the dynamic and static contacts.
  • the base 9 which is one of the outer casings is the mounting and positioning reference for all internal parts. As shown in Fig. 1, the upper cover is covered with a width D of 9 mm.
  • the left terminal 10 is the incoming end and is connected to the power supply; the right terminal 11 is the outgoing end and is connected to the load.
  • the handle 12 is part of the operating mechanism and the operator can control the split of the circuit breaker by turning the handle.
  • the magnetic tripping system for short circuit protection mainly comprises a coil 2, a moving iron core 3, a jack 6 and the like. As shown in FIG. 3, one end of the coil 2 is electrically connected to the left connecting terminal 10, and the other end is electrically connected to the stationary contact 8. connection.
  • a short-circuit current occurs in the line, the magnetic field generated by the current flowing through the coil 2 causes the moving iron core 3 to move toward the static iron core 5, and the ram 6 that is integrally riveted with the moving iron core collides with the tripping mechanism, resulting in movement, The static contacts are separated and the circuit breaker is disconnected.
  • the coil, the sleeve, the moving iron core and the static iron core in the magnetic tripping system adopt a square structure, and have the same cross-sectional density, that is, the same cross-section, compared with the conventional circular structure.
  • the square structure is smaller in width than the coil, the sleeve, the moving iron core and the static iron core of the circular structure. Therefore, the magnetic trip system can be placed inside an insulating housing of 9 mm width while satisfying the temperature rise.
  • the iron core is 1. 5 mm thick steel plate or electric pure iron plate; the coil shape is 6. 5 mm X 18. 7 mm rectangle; two static iron cores are riveted together with the yoke; The iron core is assembled with the push rod formed by the cold pier and the reaction spring is placed inside the coil, and the initial position of the moving iron core is positioned by the base. Other parameters depend on the rated current rating of the circuit breaker and the size of the circuit breaker structure. As shown in Fig. 2, the thermal trip system for overload protection mainly includes a bimetal 13, a hard joint 14, an adjusting screw 15, and the like.
  • One end of the bimetal 13 is electrically connected to the right terminal 11 by a hard connection, and the other end is electrically connected to the movable contact 16 by a soft connection.
  • the heat generated by the overload current causes the bimetal to bend and hit the trip device, causing the dynamic and static contacts to separate and the circuit breaker to open.
  • the size of the bimetal is primarily limited by the size of the product.
  • the length of the shape is generally 30mn 40mm. In practical applications, the length of the electrification should be considered. It directly affects the deformation displacement of the bimetal and the magnitude of the thrust generated.
  • the thickness of the bimetal has a great influence on the product.
  • the thickness of the bimetal of the miniature circuit breaker Generally between 0. 5mn 1. 0mm; the width of the bimetal has little effect on product performance, generally between 4mm and 8mm. Assume that the current I is passed through the circuit. According to the bimetal displacement, the thrust calculation formula and the internal space of the circuit breaker, the width, length and thickness of the bimetal are respectively 5 33 mm, 0.77. :
  • A KL 2 ⁇ / ⁇ (2)
  • K is the specific bending of the bimetallic material
  • ⁇ is the elastic modulus
  • L is the length of the arm
  • b is the width
  • h is the thickness
  • F is the tripping force
  • ⁇ is the temperature rise
  • A is the bending displacement.
  • the coil of the magnetic clutch system of the small plastic case circuit breaker is a non-circular structure of at least one turn made of copper enameled wire material
  • the core of the magnetic clutch system of the small plastic case circuit breaker is made of a non-cylindrical magnetic material
  • the sleeve of the small plastic case type circuit breaker magnetic trip system is a non-circular structure.

Landscapes

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

Abstract

Cette invention concerne un disjoncteur à boîtier moulé miniature comprenant un boîtier moulé isolant (9), des bornes d'entrée et de sortie (10, 11) disposées dans le boîtier, un système de déclenchement thermique, un système de déclenchement magnétique, un contact mobile (16), un contact fixe, un mécanisme d'actionnement (12) et un système d'extinction d'arc. Le mécanisme d'actionnement entraîne le contact mobile à effectuer l'ouverture et la déconnexion d'un circuit. Le mécanisme de déclenchement magnétique est constitué d'une culasse magnétique, de noyaux (3, 5), d'une gaine et d'une bobine (2). Une extrémité de la bobine est reliée au contact fixe par la culasse magnétique ou bien elle est directement reliée au contact fixe. L'autre extrémité de la bobine est reliée au système de déclenchement thermique ou aux bornes. La bobine du système de déclenchement magnétique est une structure non circulaire. Les noyaux du système de déclenchement magnétique sont faits d'un matériau magnétique non cylindrique. La gaine du système de déclenchement magnétique est une structure non circulaire. Le disjoncteur de l'invention présente les avantages d'une structure simple et de type mince.
PCT/CN2010/077064 2010-07-15 2010-09-17 Disjoncteur à boîtier moulé miniature WO2012006812A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010232409.8 2010-07-15
CN201010232409.8A CN102339694B (zh) 2010-07-15 2010-07-15 小型塑料外壳式断路器

Publications (1)

Publication Number Publication Date
WO2012006812A1 true WO2012006812A1 (fr) 2012-01-19

Family

ID=45468893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/077064 WO2012006812A1 (fr) 2010-07-15 2010-09-17 Disjoncteur à boîtier moulé miniature

Country Status (2)

Country Link
CN (1) CN102339694B (fr)
WO (1) WO2012006812A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9742111B2 (en) 2011-08-01 2017-08-22 Snaprays Llc Active cover plates
US9755374B2 (en) 2010-09-07 2017-09-05 Snaprays, Llc Wall socket plates and signal boosters and systems and methods thereof
CN107328428A (zh) * 2017-06-07 2017-11-07 常州普宸电子有限公司 电磁感应传感器及其加工方法
US9832841B2 (en) 2016-01-18 2017-11-28 Snap Rays LLC Wall-plate-switch system and method
US9871324B2 (en) 2011-08-01 2018-01-16 Snap Rays LLC Active cover plates
US9882361B2 (en) 2011-08-01 2018-01-30 Snaprays Llc Active cover plates
US9882318B2 (en) 2011-08-01 2018-01-30 Snaprays Llc Active cover plates
US9899814B2 (en) 2011-08-01 2018-02-20 Snaprays Llc Active cover plates
US9917430B2 (en) 2011-08-01 2018-03-13 Snap Rays Active cover plates
USD819426S1 (en) 2013-10-29 2018-06-05 Snaprays, Llc Lighted wall plate
US10109945B2 (en) 2017-02-17 2018-10-23 Snaprays, Llc Active cover plates
US10291007B2 (en) 2012-10-30 2019-05-14 Snaprays Llc Active cover plates
US10373773B2 (en) 2017-02-17 2019-08-06 Snaprays Llc Active cover plates
US10381788B2 (en) 2011-08-01 2019-08-13 Snaprays Llc Active cover plates
US10381789B2 (en) 2011-08-01 2019-08-13 Snaprays Llc Active cover plates
USD882377S1 (en) 2011-09-06 2020-04-28 Snaprays Llc Lighted wall plate
US11158982B2 (en) 2011-08-01 2021-10-26 Snaprays Llc Active cover plates
US11664631B2 (en) 2011-08-01 2023-05-30 Snaprays, Llc Environment sensing active units
US11888301B2 (en) 2011-08-01 2024-01-30 Snaprays, Llc Active cover plates
US12021335B2 (en) 2017-02-17 2024-06-25 Snaprays, Llc Active cover plates

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103515162A (zh) * 2012-06-18 2014-01-15 北京人民电器厂有限公司 一种小型断路器
CN108447747B (zh) * 2018-05-16 2019-07-12 首瑞（天津）电气设备有限公司 一种小体积断路器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0827162A1 (fr) * 1996-08-30 1998-03-04 Schneider Electric Sa Electroaimant à noyau plongeant utilisé par exemple dans un télérupteur
WO2001059798A1 (fr) * 2000-02-11 2001-08-16 Bticino S.P.A. Commutateur automatique pourvu d'un electro-aimant de manoeuvre pour courts-circuits
CN1513192A (zh) * 2001-06-01 2004-07-14 西门子公司 具有一个电磁脱扣器的开关装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201773802U (zh) * 2010-07-15 2011-03-23 北京翠祥电器元件有限公司 小型塑料外壳式断路器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0827162A1 (fr) * 1996-08-30 1998-03-04 Schneider Electric Sa Electroaimant à noyau plongeant utilisé par exemple dans un télérupteur
WO2001059798A1 (fr) * 2000-02-11 2001-08-16 Bticino S.P.A. Commutateur automatique pourvu d'un electro-aimant de manoeuvre pour courts-circuits
CN1513192A (zh) * 2001-06-01 2004-07-14 西门子公司 具有一个电磁脱扣器的开关装置

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10468834B2 (en) 2010-09-07 2019-11-05 Snaprays Llc Illuminable wall plates
US9755374B2 (en) 2010-09-07 2017-09-05 Snaprays, Llc Wall socket plates and signal boosters and systems and methods thereof
US9774154B2 (en) 2010-09-07 2017-09-26 Snaprays, Llc Wall socket plates with at least a third receptacle and systems and methods thereof
US10886674B2 (en) 2010-09-07 2021-01-05 Snaprays, Llc Illuminable wall socket plates
US11892153B2 (en) 2010-09-07 2024-02-06 Snaprays, Llc Illuminable wall socket plates
US9917430B2 (en) 2011-08-01 2018-03-13 Snap Rays Active cover plates
US11394157B2 (en) 2011-08-01 2022-07-19 Snaprays, Llc Active cover plates
US9882361B2 (en) 2011-08-01 2018-01-30 Snaprays Llc Active cover plates
US9882318B2 (en) 2011-08-01 2018-01-30 Snaprays Llc Active cover plates
US9899814B2 (en) 2011-08-01 2018-02-20 Snaprays Llc Active cover plates
US9742111B2 (en) 2011-08-01 2017-08-22 Snaprays Llc Active cover plates
US11664631B2 (en) 2011-08-01 2023-05-30 Snaprays, Llc Environment sensing active units
US9871324B2 (en) 2011-08-01 2018-01-16 Snap Rays LLC Active cover plates
US9787025B2 (en) 2011-08-01 2017-10-10 Snaprays, Llc Active cover plates
US11158982B2 (en) 2011-08-01 2021-10-26 Snaprays Llc Active cover plates
US10381788B2 (en) 2011-08-01 2019-08-13 Snaprays Llc Active cover plates
US10381789B2 (en) 2011-08-01 2019-08-13 Snaprays Llc Active cover plates
US10404045B2 (en) 2011-08-01 2019-09-03 Snaprays, Llc Active cover plates
US11888301B2 (en) 2011-08-01 2024-01-30 Snaprays, Llc Active cover plates
USD882377S1 (en) 2011-09-06 2020-04-28 Snaprays Llc Lighted wall plate
US10291007B2 (en) 2012-10-30 2019-05-14 Snaprays Llc Active cover plates
USD887250S1 (en) 2013-10-29 2020-06-16 Snaprays Llc Lighted wall plate
USD887819S1 (en) 2013-10-29 2020-06-23 Snaprays Llc Lighted wall plate
USD880984S1 (en) 2013-10-29 2020-04-14 Snaprays Llc Lighted wall plate
USD819426S1 (en) 2013-10-29 2018-06-05 Snaprays, Llc Lighted wall plate
US9832841B2 (en) 2016-01-18 2017-11-28 Snap Rays LLC Wall-plate-switch system and method
US10373773B2 (en) 2017-02-17 2019-08-06 Snaprays Llc Active cover plates
US10109945B2 (en) 2017-02-17 2018-10-23 Snaprays, Llc Active cover plates
US12021335B2 (en) 2017-02-17 2024-06-25 Snaprays, Llc Active cover plates
CN107328428A (zh) * 2017-06-07 2017-11-07 常州普宸电子有限公司 电磁感应传感器及其加工方法

Also Published As

Publication number Publication date
CN102339694B (zh) 2014-07-09
CN102339694A (zh) 2012-02-01

Similar Documents

Publication Publication Date Title
WO2012006812A1 (fr) Disjoncteur à boîtier moulé miniature
CN102782795B (zh) 热管理的电磁开关设备
JP2016519403A (ja) 新規の高圧電気スイッチ用オンオフ伝動装置
CN201773802U (zh) 小型塑料外壳式断路器
CN205911269U (zh) 一种断路器
CN108281329B (zh) 一种电气终端使用的小型断路器
US20230377824A1 (en) Quick tripping device and circuit breaker
EP2339605B1 (fr) Disjoncteur
CN102709125B (zh) 一种小型断路器的操作机构
CN108649475B (zh) 一种双母线开关柜
CN1298003C (zh) 一种小型断路器
CN201725755U (zh) 一种带剩余电流保护塑料外壳式断路器
CN113539755A (zh) 一种断路器
CN102760622B (zh) 无加长宽度为18mm多功能漏电断路器
CN111769015A (zh) 一种塑壳断路器多片式动触头及触头系统
CN202616161U (zh) 一种小型断路器电磁脱扣器
CN212783342U (zh) 小型断路器
CN211150471U (zh) 液磁断路器
CN210091970U (zh) 一种小型化隔离开关机构
CN209104098U (zh) 断路器
KR100966995B1 (ko) 배선용 차단기
CN112820591A (zh) 物联网小型断路器
CN207602486U (zh) 一种小型断路器
CN202502962U (zh) 一种小型断路器
RU78985U1 (ru) Электромагнитный расцепитель автоматического выключателя

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10854604

Country of ref document: EP

Kind code of ref document: A1

DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10854604

Country of ref document: EP

Kind code of ref document: A1