WO2016029645A1 - 断路器的操作机构 - Google Patents

断路器的操作机构 Download PDF

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Publication number
WO2016029645A1
WO2016029645A1 PCT/CN2015/071737 CN2015071737W WO2016029645A1 WO 2016029645 A1 WO2016029645 A1 WO 2016029645A1 CN 2015071737 W CN2015071737 W CN 2015071737W WO 2016029645 A1 WO2016029645 A1 WO 2016029645A1
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WO
WIPO (PCT)
Prior art keywords
contact
trip
spring
circuit breaker
operating mechanism
Prior art date
Application number
PCT/CN2015/071737
Other languages
English (en)
French (fr)
Inventor
杨峰
江玉坤
司莺歌
Original Assignee
浙江正泰电器股份有限公司
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 浙江正泰电器股份有限公司 filed Critical 浙江正泰电器股份有限公司
Priority to US15/506,933 priority Critical patent/US10276330B2/en
Priority to MX2017002496A priority patent/MX363491B/es
Publication of WO2016029645A1 publication Critical patent/WO2016029645A1/zh
Priority to CONC2017/0002920A priority patent/CO2017002920A2/es

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/30—Operating parts, e.g. handle not biased to return to a normal position upon removal of operating force
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Definitions

  • the utility model relates to the field of power distribution, in particular to an operating mechanism of a circuit breaker.
  • the operating mechanism of the existing circuit breaker includes a handle connected to the transmission link to form a toggle; a moving contact support device having a plate rotatably mounted on the pivot; and an action that can be tripped by the trip bar Disconnected mechanical interlock.
  • This interlock is formed by a stop of the trip bar and a latch that is rotatably mounted on the mandrel of the plate.
  • the link is directly connected to the latch.
  • a reduction gear stage that reduces the tripping force.
  • the bimetal is connected to the trip bar via a rotary link with a one-way drive.
  • the existing miniature circuit breaker mechanism has a small trip force and is easy to obtain good. The pressure is released, but the moving contact speed is slow, which affects the performance of the circuit breaker.
  • the purpose of the present invention is to overcome the deficiencies of the prior art and to provide an operating mechanism for a circuit breaker that improves the response speed of a moving contact.
  • An operating mechanism of a circuit breaker comprising: a static contact, a movable contact disposed on the contact support, and an operation handle coupled with the contact support; the rotating shaft of the movable contact is concentric with the rotating shaft supported by the contact.
  • the movable contact and the contact support are fixedly connected by an elastic member; the movable contact can support rotation with respect to the contact.
  • one end of the movable contact is provided with a movable contact that is electrically conductive with the static contact; the other end is provided with a rotating hole, and the contact supports a cylindrical boss at a rotation axis thereof.
  • the rotating hole is sleeved on the boss, the elastic component comprises a trip spring, the trip spring is sleeved on the boss, and two ends of the trip spring are respectively fixed on the bump Head support and moving contacts.
  • the trip spring is used as the elastic component, the contact support, the trip spring and the movable contact are coaxially positioned, the space occupation is small, and the positioning of the boss can effectively fix the trip spring, so that the elastic stress is stabilized in the tangent along the boss.
  • Directional action Ensure that the moving contacts are stable and reliable.
  • the rotating hole is provided with a convex column at an edge away from the movable contact, and one side of the column is provided with a spring groove fixed in contact with the trip spring.
  • the utility model relates to a specific trip spring fixing structure.
  • the cylinder body can be used as a limiting structure of the movable contact, and has a positioning structure capable of being used as a trip spring, has low implementation cost and is advantageous for reducing space occupation.
  • the movable contact comprises a disk, and the rotating hole is formed at the axis of the disk; the edge of the disk extends out of the contact bar, and the end of the contact bar forms the movable contact
  • the disc is provided with the cylinder at an edge away from the contact rod, and one side of the top of the cylinder is provided with a protrusion, and the side of the protrusion corresponding to the cylinder forms the spring groove;
  • the other side of the body forms a limiting surface; the contact rod and the disc are fixed in the same plane; the cylinder and the disc are vertically fixed. This is a specific moving contact shape, and the disc-shaped structure is convenient for rotation and limitation.
  • the contact supports a ring groove provided with a disk on which the movable contact is disposed around the rotating shaft; the ring groove is respectively provided with a first notch and a second at positions avoiding the column and the contact bar a notch; the first notch is provided with a positioning surface at one end of the opposite limiting surface; the edge of the annular groove is provided with a spring column adjacent to the positioning surface; and the side of the spring column facing away from the positioning surface is provided with an inward a fixing groove recessed and extending through a portion of the annular groove wall for fixing the end of the trip spring.
  • the second bottom portion is provided with a card slot extending through the ring groove wall along the tripping direction of the contact bar; the ring groove wall portion at the top of the card slot forms a limit for preventing the contact bar from falling off in the axial direction.
  • the movable contact is rotatable relative to the contact support in a space defined by the first notch and the second notch.
  • one end of the spring column top facing the fixing groove is provided with an inclined introduction surface; and the bottom of the ring groove extends outward at the second notch position to form a support plate for supporting the contact rod.
  • the ring groove is used to position the disc of the movable contact, so that the movable contact can stably support the rotation of the contact, and the two notches can limit the rotational position of the movable contact on the contact support from the two ends of the disc. It is not limited to the bit effect, and it is limited by two notches. It can evenly distribute the impact force when the moving contact and the contact support impact, reduce the impact loss and improve the service life of the product.
  • the contact support further includes a mechanical interlocking shaft and a lock shaft;
  • the operating mechanism further includes a transmission link, a mechanical interlocking device, a buckle, and the buckle is engaged with the buckle to realize the tripping action of the circuit breaker.
  • the mechanical interlocking device and the latch are respectively pivotally disposed on the mechanical interlocking shaft and the locking shaft supported by the contact; one end of the mechanical interlocking device is hingedly connected with the operating handle through a transmission link; One end is connected to the buckle buckle.
  • the mechanical interlocking device and the lock are arranged on the contact support; no additional rotating plate is needed, which simplifies the fixed structure and is beneficial to improving the reliability of the product.
  • the trip device includes an electromagnetic trip module
  • the electromagnetic trip module includes a striker pin
  • the striker and the movable iron core of the electromagnetic trip module are fixed by a pressing spring, and the striker can eject the impact lock. Separating the mechanical interlock from the buckle of the buckle.
  • the existing striker is connected with the moving iron core of the electromagnetic tripping module by a shaft hole tightly, and requires a certain degree of firmness. Once the connection is loose, the tripping function may be invalidated.
  • the striker of the technical solution and the moving iron core of the electromagnetic trip module are pressed and contacted by the trip spring, and do not need to be fixed, thereby improving the reliability of the product.
  • the trip device includes a thermal overload trip module
  • the thermal overload trip module includes a bimetal that can be deformed according to a temperature change
  • the latch is provided with a trip link, the pair The metal piece and the trip link are fixedly connected to separate the mechanical interlocking device from the buckle of the buckle.
  • the movable contact and the contact of the utility model support the same rotating shaft center, and the force arm is reduced to the minimum. Therefore, when the contact supports the action, the movable contact can respond quickly, and the response speed is obviously improved compared with the prior art.
  • the elastic member is fixedly connected, and the movable contact can support the rotation with respect to the contact, and can buffer the impact force when the movable contact contacts the contact support and the static contact, reduces the tripping force while improving the response speed, and improves the product.
  • the service life is moving, and the contact and contact support eliminates the adhesive process and improves product reliability.
  • FIG. 1 is a schematic structural view of an operating mechanism of the circuit breaker of the present invention in an open state
  • FIG. 2 is a schematic structural view of the operating mechanism of the circuit breaker of the present invention in a closed state
  • FIG. 3 is a schematic view showing a matching structure of a movable contact and a contact supported by the circuit breaker of the present invention
  • FIG. 4 is a schematic structural view of a contact support of the circuit breaker of the present invention.
  • Figure 5 is a schematic view showing the structure of the movable contact of the circuit breaker of the present invention.
  • the utility model discloses a circuit breaker.
  • the circuit breaker includes an operating mechanism.
  • the operating mechanism comprises: a static contact, a movable contact disposed on the contact support, and an operation handle coupled with the contact support; the rotating shaft of the movable contact is concentric with the rotating shaft supported by the contact, the movable contact
  • the connection with the contact support is fixedly connected by the elastic member; the movable contact can support rotation with respect to the contact.
  • the elastic parts can be made of springs, torsion springs, rubber and the like.
  • the existing moving contact and the rotating shaft supported by the contact are independent of each other and the rotating axis is separated, resulting in the moving arm rotating arm length and the mechanism moving speed is slow, the moving contact and the contact of the utility model
  • the supported rotating shaft is concentric, and the arm is reduced to the minimum. Therefore, when the contact supports the action, the moving contact can respond quickly, and the response speed is significantly improved compared with the prior art.
  • the elastic member is fixedly connected, and the movable contact can support the rotation with respect to the contact, and can buffer the impact force when the movable contact contacts the contact support and the static contact, reduces the tripping force while improving the response speed, and improves the product.
  • the service life is moving, and the contact and contact support eliminates the adhesive process and improves product reliability.
  • the operating mechanism of the circuit breaker of the present embodiment includes: a static contact 10, a movable contact 9, a contact support 5 linked with the movable contact 9, an operation handle 2 linked with the contact support 5; a movable contact 9 and a touch
  • the head support 5 is set on the same rotating shaft, and the movable contact 9 and the contact support 5 are fixedly connected by the trip spring 13 .
  • the operating mechanism is fixed in the casing 1 of the circuit breaker, and the operating mechanism further includes a transmission link 3, a mechanical interlocking device 4, a buckle 6, and a tripping device that cooperates with the latch to realize a tripping action of the circuit breaker;
  • the contact support further includes a mechanical interlocking shaft 54 and a locking shaft 56; the mechanical interlocking device and the locking bolt are respectively pivotally disposed on the mechanical interlocking shaft 54 and the locking shaft 56 supported by the contact;
  • One end of the interlocking device 4 is hingedly connected to the operating handle 2 via a transmission link 3; the other end is snap-connected with the locking hook 6.
  • the rotating shaft of the operating handle 2 is provided with a return spring that returns the handle to the off position.
  • the mechanical interlocking device 4 and the lock 6 are disposed on the contact support 5; there is no need to additionally add a rotating plate, which simplifies the fixing structure and is beneficial to improve the reliability of the product.
  • the trip device includes an electromagnetic trip module and a thermal overload trip module.
  • the electromagnetic trip module includes a striker 11 .
  • the striker 11 and the movable iron core of the electromagnetic trip module are pressed and fixed by the action spring 12; the striker can eject the impact lock.
  • the mechanical interlock is separated from the buckle of the lock.
  • Impact pin 11 and moving iron of electromagnetic trip module The heart is pressed and contacted by the trip spring 13 and does not need to be fixed, thereby improving the reliability of the product.
  • the thermal overload trip module comprises a bimetal 8 which can be deformed according to a temperature change, and the buckle 6 is provided with a trip link 7 , and the bimetal 8 and the trip link 7 are fixedly connected to enable the mechanical interlocking device and the lock The buckle of the buckle is separated.
  • the movable contact 9 includes a disk 94, and the disk 94 is hollowed out to form a rotating hole 91; the edge of the disk 94 extends out of the contact bar, and the end of the contact bar forms a movable contact that is electrically conductive with the fixed contact 10;
  • the hole 91 is sleeved on the boss 51.
  • the disc 94 is provided with a column 96 at an edge away from the contact bar.
  • One side of the top of the column 96 is provided with a protrusion, and the side of the protrusion corresponding to the column 96 forms a spring.
  • the elastic member includes a trip spring 13 and the trip spring 13 is sleeved On the boss 51.
  • the contact support 5 is provided with a cylindrical boss 51 at its rotational axis, the contact support is mounted on the rotating shaft of the housing, and the movable contact is sleeved on the boss 51 supported by the contact.
  • the contact supports a ring groove 511 provided with a disk 94 on which the movable contact is placed around the rotating shaft; the ring groove 511 is respectively provided with a first notch 512 and a second at a position avoiding the column 96 and the contact bar a notch 513; the first notch is provided with a positioning surface 53 at one end of the opposite limiting surface; the edge of the annular groove is provided with a spring column 52 at a position adjacent to the positioning surface; the spring column is disposed away from the side of the positioning surface a fixing groove 55 for inwardly recessing and penetrating a part of the annular groove wall for fixing the end of the trip spring; one end of the spring column top facing the fixing groove is provided with an inclined introduction surface 50; the bottom of the ring groove
  • the trip spring 13 is used as the elastic component, the contact support 5, the trip spring 13 and the movable contact 9 are coaxially positioned, the space occupation is small, and the positioning of the boss 51 can effectively fix the trip spring 13 so that the trip spring 13 can be effectively fixed.
  • the elastic stress is stabilized in the tangential direction of the boss 51, ensuring stable and reliable tripping of the movable contact 9.
  • the cylinder 96 can be used as a limiting structure of the movable contact 9, and has a positioning structure capable of being used as the trip spring 13, which is low in implementation cost and is advantageous in reducing space occupation.
  • the disconnected position corresponds to the movable contact 9 being separated from the fixed contact 10, the handle being rotated counterclockwise by a return spring (not shown), and the fixed contact 10 is firmly connected to the electromagnetic trip module Only the striker 11 and the action spring 12 of the electromagnetic trip module are shown on the drawing.
  • the tripping device makes the mechanism disconnection principle: the structure of the buckle connection of the buckle 6 and the mechanical interlocking device 4 is separable, and when the electromagnetic tripping or thermal tripping condition is reached in the circuit, the striker 11 of the electromagnetic tripping module is ejected. , the impact module is bent on the buckle 6 , and the thermal trip module is bent by the bimetal 8 , and the buckle 6 is pulled by the trip link 7 to separate the buckle 6 from the fastening surface of the mechanical interlocking device 4 , and the operating mechanism is automatically broken.
  • the handle is turned to the open position by the return spring, and the mechanism rapidly disengages the movable contact 9 and the fixed contact 10 by the action of an energy storage spring (not shown).

Abstract

一种断路器的操作机构，其包括：静触头（10），设置在触头支持（5）上的动触头（9），与触头支持联动的操作手柄（2）；该动触头的旋转轴与触头支持的旋转轴同心，该动触头和触头支持之间通过弹性部件（13）固定连接；该动触头可相对触头支持转动。该断路器的操作机构可以提高动触头的响应速度。

Description

断路器的操作机构 技术领域
本实用新型涉及配电领域，尤其涉及一种断路器的操作机构。
背景技术
现有断路器的操作机构包括一个与传动连杆连接的手柄，构成一个肘节；一个动触头支持装置，具有一块可转动地安装在枢轴上的板；以及一个可被跳闸杆的动作断开的机械连锁.这种连锁是由跳闸杆的一个止动挡与旋转安装在板的心轴上的一个锁闩相配合构成的，连扦直接连接到锁闩上，这种装配组成了一个减速传动级，能够使跳闸力减小，双金属片通过一个具有单向传动的转动连扦连接到跳闸杆上，现有的小型断路器机构具有较小的脱扣力并且易于获得良好的解除压力，但其动触头动作速度慢，影响断路器性能。
发明内容
本实用新型的目的在于克服现有技术的缺陷，提供一种提高动触头响应速度的断路器的操作机构。
为实现上述目的，本实用新型采用了如下技术方案：
一种断路器的操作机构，包括：静触头，设置在触头支持上的动触头，与触头支持联动的操作手柄；所述动触头的旋转轴与触头支持的旋转轴同心，所述动触头和触头支持之间通过弹性部件固定连接；所述动触头可相对触头支持转动。
进一步的，所述动触头一端设有跟所述静触头配合导电的动触点；另一端设有旋转孔，所述触头支持在其旋转轴心处设有圆柱形的凸台，所述旋转孔套接在所述凸台上，所述弹性部件包括脱扣弹簧，所述脱扣弹簧套接在所述凸台上，所述脱扣弹簧的两端分别固定在所述触头支持和动触头上。采用脱扣弹簧作为弹性部件，触头支持、脱扣弹簧、动触头同轴定位，空间占用小，且通过凸台定位，能有效固定脱扣弹簧，使弹性应力稳定在沿凸台的切线方向作用， 确保动触头能够稳定、可靠脱扣。
进一步的，所述旋转孔在远离动触点的边缘设有凸起的柱体，所述柱体的一侧设有与脱扣弹簧接触固定的弹簧槽。此为一种具体的脱扣弹簧固定结构，柱体既可以作为动触头的限位结构，有能作为脱扣弹簧的定位结构，实施成本低，且有利于减少空间占用。
进一步的，所述动触头包括圆盘，所述圆盘的轴线处镂空形成所述旋转孔；所述圆盘的边缘延伸出触杆，所述触杆的端部形成所述动触点；所述圆盘在远离触杆的边缘设有所述柱体，所述柱体的顶部的一侧设有凸块，所述凸块与柱体相应的一侧形成所述弹簧槽；柱体另一侧形成限位面；所述触杆和圆盘位于同一平面固定；所述柱体和圆盘垂直固定。此为一种具体的动触头形状，圆盘形的结构便于旋转和限位。进一步的，所述触头支持环绕旋转轴设有放置所述动触头的圆盘的环槽；所述环槽在避让所述柱体和触杆的位置分别设有第一缺口和第二缺口；所述第一缺口在相对限位面的一端设有定位面；所述环槽的边缘在临近定位面的位置设有弹簧柱；所述弹簧柱背离定位面的一侧设有向内凹陷并贯穿部分环槽槽壁的、用于固定脱扣弹簧端部的固定槽。进一步，所述第二缺底部沿触杆脱扣转动方向设有贯穿环槽槽壁的卡槽；所述卡槽顶部的环槽槽壁部分形成防止所述触杆沿轴向脱落的限位部；所述动触头可相对触头支持在第一缺口和第二缺口限定的空间内转动。进一步，所述弹簧柱顶部面向固定槽的一端设有倾斜的导入面；所述环槽底部在第二缺口位置往外延伸形成有承托所述触杆的托板。采用环槽来定位动触头的圆盘，使得动触头可以稳定地相对触头支持转动，而两个缺口可以从圆盘两端对动触头在触头支持上的转动位置进行限位，不仅限位效果更佳，且通过两个缺口来限位，可以平均分配动触头跟触头支持撞击时的冲击力，减小冲击损耗，提高了产品的使用寿命。
进一步的，所述触头支持还包括机械联锁转轴和锁扣转轴；所述操作机构还包括传动连杆、机械连锁装置、锁扣，以及与所述锁扣配合实现断路器脱扣动作的脱扣装置；所述机械连锁装置和锁扣分别枢轴设置在触头支持的机械联锁转轴和锁扣转轴上；所述机械连锁装置一端通过传动连杆跟所述操作手柄铰链连接；另一端跟所述锁扣搭扣连接。机械连锁装置和锁扣设置在触头支持上；不需要另外增加旋转板，简化了固定结构，有利于提高产品的可靠性。
进一步的，所述脱扣装置包括电磁脱扣模块，所述电磁脱扣模块包括撞针，所述撞针与电磁脱扣模块的动铁心采用作用弹簧挤压接触固定，所述撞针可弹出撞击锁扣使机械连锁装置与锁扣的搭扣分离。现有的撞针是与电磁跳闸模块的动铁心采用轴孔紧配合方式连接，且需要一定的牢固度，一旦连接松动就会造成脱扣功能失效。本技术方案的撞针与电磁脱扣模块的动铁心采用脱扣弹簧挤压接触，不需要固定，提高了产品的可靠性。
进一步的，所述脱扣装置包括热过负荷脱扣模块，所述热过负荷脱扣模块包括可根据温度变化形变的双金属片，所述锁扣上设有脱扣连杆，所述双金属片和脱扣连杆固定连接，可使机械连锁装置与锁扣的搭扣分离。
本实用新型的动触头和触头支持采用同一旋转轴心，力臂缩减到最小，因此在触头支持动作时，动触头能快速响应动作，相比现有技术，响应速度明显提高。采用弹性部件固定连接，且动触头可相对触头支持转动，可以缓冲动触头跟触头支持、静触头接触时的冲击力，在提高响应速度的同时降低脱扣力，提高产品的使用寿命动，且触头与触头支持取消了粘胶工序，提高产品可靠性。
附图说明
图1是本实用新型断路器的操作机构在分闸状态的结构示意图；
图2是本实用新型断路器的操作机构在合闸状态的结构示意图；
图3是本实用新型断路器的动触头和触头支持的配合结构示意图；
图4是本实用新型断路器的触头支持的结构示意图；
图5是本实用新型断路器的动触头的结构示意图。
其中：1、壳体；2、操作手柄；3、传动连杆；4、机械连锁装置；5、触头支持；511、环槽；512、第一缺口；513、第二缺口；50、导入面；51、凸台；52、弹簧柱；53、定位面；54、机械联锁转轴；55、固定槽；56、锁扣转轴；57、卡槽；58、托板；59、限位部；6、锁扣；7、脱扣连杆；8、双金属片；9、动触头；91、旋转孔；92、弹簧槽；93、限位面；94、圆盘；95、触杆；96、柱体；10、静触头；11、撞针；12、作用弹簧；13、脱扣弹簧。
具体实施方式
本实用新型公开一种断路器。该断路器包括一种操作机构。操作机构包括：静触头，设置在触头支持上的动触头，与触头支持联动的操作手柄；所述动触头的旋转轴与触头支持的旋转轴同心，所述动触头和触头支持之间通过弹性部件固定连接；所述动触头可相对触头支持转动。弹性部件可以选用弹簧、扭簧、橡胶等材料制成。
经研究，现有的动触头和触头支持的旋转轴是相互独立且旋转轴心是分离的，导致动触头旋转臂长，机构动作速度慢，本实用新型的动触头和触头支持的旋转轴同心，力臂缩减到最小，因此在触头支持动作时，动触头能快速响应动作，相比现有技术，响应速度明显提高。采用弹性部件固定连接，且动触头可相对触头支持转动，可以缓冲动触头跟触头支持、静触头接触时的冲击力，在提高响应速度的同时降低脱扣力，提高产品的使用寿命动，且触头与触头支持取消了粘胶工序，提高产品可靠性。
以下结合附图1至5给出的实施例，进一步说明本实用新型的操作机构的具体实施方式。本实用新型的操作结构不限于以下实施例的描述。
如图1～5所示。本实施方式的断路器的操作机构包括：静触头10，动触头9，与动触头9联动的触头支持5，与触头支持5联动的操作手柄2；动触头9和触头支持5套装在同一转轴上，动触头9和触头支持5之间通过脱扣弹簧13固定连接。
操作机构固定在断路器的壳体1内，所述操作机构还包括传动连杆3、机械连锁装置4、锁扣6，以及与所述锁扣配合实现断路器脱扣动作的脱扣装置；所述触头支持还包括机械联锁转轴54和锁扣转轴56；所述机械连锁装置和锁扣分别枢轴设置在触头支持的机械联锁转轴54和锁扣转轴56上；所述机械连锁装置4一端通过传动连杆3跟所述操作手柄2铰链连接；另一端跟所述锁扣6搭扣连接。操作手柄2的转轴内套设有将手柄拨回到断开位置的返回弹簧。机械连锁装置4和锁扣6设置在触头支持5上；不需要另外增加旋转板，简化了固定结构，有利于提高产品的可靠性。
脱扣装置包括电磁脱扣模块和热过负荷脱扣模块，电磁脱扣模块包括撞针11，撞针11与电磁脱扣模块的动铁心采用作用弹簧12挤压接触固定；撞针可弹出撞击锁扣使机械连锁装置与锁扣的搭扣分离。撞针11与电磁脱扣模块的动铁 心采用脱扣弹簧13挤压接触，不需要固定，提高了产品的可靠性。
热过负荷脱扣模块包括可根据温度变化形变的双金属片8，锁扣6上设有脱扣连杆7，双金属片8和脱扣连杆7固定连接，可使机械连锁装置与锁扣的搭扣分离。
动触头9包括圆盘94，圆盘94的轴线处镂空形成旋转孔91；圆盘94的边缘延伸出触杆，触杆的端部形成跟静触头10配合导电的动触点；旋转孔91套接在凸台51上，圆盘94在远离触杆的边缘设有柱体96，柱体96的顶部的一侧设有凸块，凸块与柱体96相应的一侧形成弹簧槽92；柱体96的另一面形成限位面93；触杆和圆盘94位于同一平面固定；柱体96和圆盘94垂直固定；弹性部件包括脱扣弹簧13，脱扣弹簧13套接在凸台51上。
触头支持5在其旋转轴心处设有圆柱形的凸台51，触头支持安装在壳体的旋转轴上，动触头套在触头支持的凸台51上。触头支持环绕旋转轴设有放置所述动触头的圆盘94的环槽511；所述环槽511在避让所述柱体96和触杆的位置分别设有第一缺口512和第二缺口513；所述第一缺口在相对限位面的一端设有定位面53；所述环槽的边缘在临近定位面的位置设有弹簧柱52；所述弹簧柱背离定位面的一侧设有向内凹陷并贯穿部分环槽槽壁的、用于固定脱扣弹簧端部的固定槽55；所述弹簧柱顶部面向固定槽的一端设有倾斜的导入面50；所述环槽底部在第二缺口位置往外延伸形成有承托所述触杆的托板58；所述第二缺底部沿触杆脱扣转动方向设有贯穿环槽槽壁的卡槽57；所述卡槽顶部的环槽槽壁部分形成防止所述触杆沿轴向脱落的限位部59；所述动触头可相对触头支持在第一缺口和第二缺口限定的空间内转动；所述脱扣弹簧的一端嵌入在所述弹簧槽92内；另一端嵌入在所述固定槽55内。
本实施方式采用脱扣弹簧13作为弹性部件，触头支持5、脱扣弹簧13、动触头9同轴定位，空间占用小，且通过凸台51定位，能有效固定脱扣弹簧13，使弹性应力稳定在沿凸台51的切线方向作用，确保动触头9能够稳定、可靠脱扣。柱体96既可以作为动触头9的限位结构，有能作为脱扣弹簧13的定位结构，实施成本低，且有利于减少空间占用。
本实用新型的工作原理是：
正常分、合闸动作：操作手柄2按顺时针方向转动，通过传动连杆3、机械 连锁装置4和锁扣6，使触头支持5带动动触头9其共同的转轴也按顺时针方向转动，并与静触头10接触，操作机构达到闭合位置；
断开位置对应的是动触头9与静触头10分离，手柄由一个返回弹簧(未示出)的作用逆时针的转向断开位置，静触头10牢固地连接在电磁脱扣模块上，在图上只表示出该电磁脱扣模块的撞针11及作用弹簧12。
脱扣装置使机构断开原理：锁扣6与机械连锁装置4的搭扣连接的结构是可分离的，当电路中达到电磁脱扣或热脱扣条件时，电磁脱扣模块的撞针11弹出，撞击在锁扣6上，而热脱扣模块是双金属片8弯曲，通过脱扣连杆7拉动锁扣6，使锁扣6与机械连锁装置4的搭扣面分离，操作机构自动断开，手柄在返回弹簧的作用下转向断开位置，机构在储能弹簧(未示出)的作用迅速使动触头9和静触头10分离。
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本实用新型的保护范围。

Claims (10)

  1. 一种断路器的操作机构，包括：静触头(10)，设置在触头支持(5)上的动触头(9)，与触头支持(5)联动的操作手柄(2)；其特征在于：所述动触头(9)的旋转轴与触头支持(5)的旋转轴同心，所述动触头(9)和触头支持(5)之间通过弹性部件固定连接；所述动触头(9)可相对触头支持(5)转动。
  2. 根据权利要求1所述的断路器的操作机构，其特征在于：所述动触头(9)一端设有跟所述静触头(10)配合导电的动触点；另一端设有旋转孔(91)，所述触头支持(5)在其旋转轴心处设有圆柱形的凸台(51)，所述旋转孔(91)套接在所述凸台(51)上，所述弹性部件包括脱扣弹簧(13)，所述脱扣弹簧(13)套接在所述凸台(51)上，所述脱扣弹簧(13)的两端分别固定在所述触头支持(5)和动触头(9)上。
  3. 根据权利要求2所述的断路器的操作机构，其特征在于：所述旋转孔(91)在远离动触点的边缘设有凸起的柱体(96)，所述柱体(96)的一侧设有与脱扣弹簧(13)接触固定的弹簧槽(92)。
  4. 根据权利要求3所述的断路器的操作机构，其特征在于：所述动触头(9)包括圆盘(94)，所述圆盘(94)的轴线处镂空形成所述旋转孔(91)；所述圆盘(94)的边缘延伸出触杆(95)，所述触杆(95)的端部形成所述动触点；所述圆盘(94)在远离触杆(95)的边缘设有所述柱体(96)，所述柱体(96)的顶部的一侧设有凸块，所述凸块与柱体(96)相应的一侧形成所述弹簧槽(92)；柱体(96)另一侧形成限位面(93)；所述触杆(95)和圆盘(94)位于同一平面固定；所述柱体(96)和圆盘(94)垂直固定。
  5. 根据权利要求4所述的断路器的操作机构，其特征在于：所述触头支持(5)环绕旋转轴设有放置所述动触头(9)的圆盘(94)的环槽(511)；所述环槽(511)在避让所述柱体(96)和触杆(95)的位置分别设有第一缺口(512)和第二缺口(513)；所述第一缺口(512)在相对限位面(93)的一端设有定位面(53)；所述环槽(511)的边缘在临近定位面(53)的位置设有弹簧柱(52)；所述弹簧柱(52)背离定位面(53)的一侧设有向内凹陷并贯穿部分环槽(511)槽壁的、用于固定脱扣弹簧(13)端部的固定槽(55)。
  6. 根据权利要求5所述的断路器的操作机构，其特征在于：所述第二缺底部沿触杆(95)脱扣转动方向设有贯穿环槽(511)槽壁的卡槽(57)；所述卡槽(57)顶部的环槽(511)槽壁部分形成防止所述触杆(95)沿轴向脱落的限位部(59)；所述动触头(9)可相对触头支持(5)在第一缺口(512)和第二缺口(513)限定的空间内转动。
  7. 根据权利要求5所述的断路器的操作机构，其特征在于：所述弹簧柱(52)顶部面向固定槽(55)的一端设有倾斜的导入面(50)；所述环槽(511)底部在第二缺口(513)位置往外延伸形成有承托所述触杆(95)的托板(58)。
  8. 根据权利要求1～7任一所述的断路器的操作机构，其特征在于：所述触头支持(5)还包括机械联锁转轴(54)和锁扣转轴(56)；所述操作机构还包括传动连杆(3)、机械连锁装置(4)、锁扣(6)，以及与所述锁扣(6)配合实现断路器脱扣动作的脱扣装置；所述机械连锁装置(4)和锁扣(6)分别枢轴设置在触头支持(5)的机械联锁转轴(54)和锁扣转轴(56)上；所述机械连锁装置(4)一端通过传动连杆(3)跟所述操作手柄(2)铰链连接；另一端跟所述锁扣(6)搭扣连接。
  9. 根据权利要求8所述的断路器的操作机构，其特征在于：所述脱扣装置包括电磁脱扣模块，所述电磁脱扣模块包括撞针，所述撞针与电磁脱扣模块的动铁心采用作用弹簧(12)挤压接触固定，所述撞针可弹出撞击锁扣(6)使机械连锁装置(4)与锁扣(6)的搭扣分离。
  10. 根据权利要求8所述的断路器的操作机构，其特征在于：所述脱扣装置包括热过负荷脱扣模块，所述热过负荷脱扣模块包括可根据温度变化形变的双金属片(8)，所述锁扣(6)上设有脱扣连杆(7)，所述双金属片(8)和脱扣连杆(7)连接，可使机械连锁装置(4)与锁扣(6)的搭扣分离。
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