WO2022226817A1

WO2022226817A1 - Residual current operated circuit breaker

Info

Publication number: WO2022226817A1
Application number: PCT/CN2021/090428
Authority: WO
Inventors: 郭得道; 袁从飞; 何天纯
Original assignee: 浙江沃斯托电气有限公司
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-11-03

Abstract

The present invention provides a residual current operated circuit breaker, comprising a housing, a handle, a driving wheel, a tripping frame, a moving contact, a static contact, and an electric leakage tripping mechanism. The electric leakage tripping mechanism comprises a residual current detecting member, a residual current tripper, and an electric leakage support. The electric leakage support is pivotally connected to the housing, and the electric leakage support has a first position and a second position. In the state of no residual current, the electric leakage support is in the first position, the driving wheel is locked to the tripping frame, and part of the tripping frame is located on the motion trajectory of a tripping driving portion. When there is residual current in a circuit, the electric leakage support rotates from the first position to the second position and triggers the rotation of the tripping frame located on its motion trajectory so that the tripping frame is unlocked from the driving wheel, the moving contact is separated from the static contact, and the handle is opened. The electric leakage support rotates to the second position, a reset driving portion is located on the trajectory of the opening rotation or closing rotation of the handle, and during the opening rotation or closing rotation of the handle, the electric leakage support moves in unison with the handle and is reset to the first position.

Description

剩余电流动作断路器Residual current operated circuit breaker

技术领域technical field

本发明涉及一种断路器，且特别涉及一种剩余电流动作断路器。The present invention relates to a circuit breaker, and in particular, to a residual current operated circuit breaker.

背景技术Background technique

断路器是一种能够关合、承载和开断正常回路条件下的电流，并能在规定的时间内承载和开断异常回路条件下的电流的开关装置。剩余电流动作断路器是断路器中的一种，是用于接通、承载和分断正常电路条件下的电流，已经在规定条件下当剩余电流达到规定值时电路能断开，且在规定的异常电路条件下(例如短路)也能接通承载一定时间和自动分断电流的机械开关电器。A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions, and can carry and break current under abnormal circuit conditions within a specified time. Residual current operated circuit breaker is a kind of circuit breaker, which is used to connect, carry and break current under normal circuit conditions. Under abnormal circuit conditions (such as short circuit), the mechanical switchgear that carries a certain time and automatically breaks the current can also be turned on.

现有剩余电流动作断路器的操作机构包括手柄、双U型连杆、跳扣、锁扣、杠杆、锁扣弹簧、触头弹簧、复位弹簧、动触头、静触头、弹簧片、脱扣杆、复位杆以及电磁互感器等部件。复位杆连接于跳扣，弹簧片连接于复位杆，脱扣杆枢接于壳体且要在存在剩余电流脱扣时跟随复位杆和弹簧片联动。弹簧片、脱扣杆、复位杆以及电磁互感器的设置不仅结构复杂、成本高且对安装精度具有很高的要求；进一步，复位杆和跳扣的连接也增大了安装的难度。The operating mechanism of the existing residual current operation circuit breaker includes a handle, a double U-shaped link, a jumper, a lock, a lever, a lock spring, a contact spring, a return spring, a moving contact, a static contact, a spring sheet, a release Buckle rod, reset rod and electromagnetic transformer and other components. The reset lever is connected to the jumper, the spring sheet is connected to the reset lever, and the trip lever is pivotally connected to the housing and should follow the reset lever and the spring sheet when there is residual current tripping. The arrangement of the spring sheet, the tripping rod, the reset rod and the electromagnetic transformer is not only complicated in structure, high in cost, but also has high requirements on the installation accuracy; further, the connection between the reset rod and the jumper also increases the difficulty of installation.

此外，现有的剩余电流动作断路器中通常只具有用于指示触头通断状态的通断指示，而没有漏电功能的指示，用户使用非常的不方便。进一步的，现有的剩余电流动作断路器中电磁互感器固定于壳体的内部区域，不仅更换困难且充退磁也很困难。In addition, the existing residual current operated circuit breakers usually only have on-off indication for indicating the on-off state of the contacts, but no indication of the leakage function, which is very inconvenient for users to use. Further, in the existing residual current operated circuit breaker, the electromagnetic transformer is fixed to the inner area of the casing, which is not only difficult to replace, but also difficult to charge and demagnetize.

发明内容SUMMARY OF THE INVENTION

本发明为了克服现有技术的剩余电流动作断路器结构复杂且成本高的问题，提供一种结构简单、装配方便且低成本的剩余电流动作断路器。In order to overcome the problems of complex structure and high cost of the residual current operated circuit breaker in the prior art, the present invention provides a residual current operated circuit breaker with simple structure, convenient assembly and low cost.

为了实现上述目的，本发明提供一种剩余电流动作断路器，其包括壳体、手柄、驱动轮、脱扣架、动触头、静触头以及漏电脱扣机构。漏电脱扣机构包括剩余电流检测件、剩余电流脱扣器以及漏电支架。剩余电流检测件检测电路中的剩余电流。剩余电流脱扣器电性连接剩余电流检测件且基于检测到的剩余电流而动作；支架包括支架本体、复位驱动部、漏电驱动部以及脱扣驱动部，支架本体枢接于壳体，漏电支架具有第一位置和第二位置。In order to achieve the above purpose, the present invention provides a residual current operated circuit breaker, which includes a casing, a handle, a driving wheel, a trip frame, a moving contact, a static contact and a leakage tripping mechanism. The leakage tripping mechanism includes a residual current detecting element, a residual current tripper and a leakage current support. The residual current detecting element detects residual current in the circuit. The residual current release is electrically connected to the residual current detection element and operates based on the detected residual current; the bracket includes a bracket body, a reset driving part, a leakage driving part and a tripping driving part, the bracket body is pivotally connected to the casing, and the leakage bracket Has a first position and a second position.

在无剩余电流的状态下，漏电支架处于第一位置，驱动轮和脱扣架锁定，动触头抵接静触头且脱扣架部分位于脱扣驱动部的运动轨迹上；In the state of no residual current, the leakage bracket is in the first position, the driving wheel and the tripping frame are locked, the moving contact abuts the static contact, and the tripping frame is partially located on the movement track of the tripping drive part;

当电路中存在剩余电流时，剩余电流脱扣器触发漏电驱动部以使漏电支架从第一位置向第二位置转动并触发位于其运动轨迹上的脱扣架转动以使脱扣架与驱动轮解锁，动触头和静触头分离且手柄分闸；When there is residual current in the circuit, the residual current tripper triggers the leakage current drive part to rotate the leakage current bracket from the first position to the second position and triggers the rotation of the trip frame located on its movement track to make the trip frame and the driving wheel rotate Unlock, the moving contact and the static contact are separated and the handle is opened;

漏电支架转动至第二位置，复位驱动部位于手柄分闸转动或合闸转动的轨迹上，手柄分闸转动或合闸转动时漏电支架跟随手柄联动复位至第一位置。The leakage bracket rotates to the second position, and the reset drive part is located on the track of the opening rotation or closing rotation of the handle.

根据本发明的一实施例，漏电支架还包括形成于支架本体且向壳体顶部方向延伸的漏电指示部，漏电指示部上具有表征无剩余电流状态的第一标识和表征存在剩余电流脱扣状态的第二标识，壳体的顶部具有漏电指示观察窗，漏电指示部跟随支架本体转动以使漏电指示观察窗显示第一标识或第二标识。According to an embodiment of the present invention, the leakage support further includes a leakage indication portion formed on the support body and extending toward the top of the casing, and the leakage indication portion has a first mark representing a state of no residual current and a state of residual current tripping. The top of the casing has a leakage indicating observation window, and the leakage indicating part rotates with the bracket body so that the leakage indicating observation window displays the first identification or the second identification.

根据本发明的一实施例，漏电驱动部通过漏电反力弹簧安装于壳体，在无剩余电流的合闸状态下，漏电反力弹簧处于自然状态以使漏电支架处于稳态的第一位置；当电路中存在剩余电流时，剩余电流脱扣器触发漏电驱动部以使漏电支架转动至第二位置并压缩漏电反力弹簧。According to an embodiment of the present invention, the leakage current driving part is installed on the housing through the leakage current reaction force spring, and in the closed state without residual current, the leakage current reaction force spring is in a natural state so that the leakage current support is in a steady first position; When there is residual current in the circuit, the residual current trip unit triggers the leakage current driving part to rotate the leakage current support to the second position and compress the leakage current reaction force spring.

根据本发明的一实施例，当漏电支架转动至第二位置后复位驱动部位于手柄合闸转动的轨迹上时，漏电脱扣机构还包括将漏电支架锁定在第二位置的止动机构，止动机构包括凸轮、止动件以及止动件压簧。凸轮通过凸轮扭簧枢接于手柄。止动件包括与凸轮相啮合的触发部以及与漏电驱动部扣合或分离的锁扣部，触发部和锁止部的连接处枢接于壳体。止动件压簧设置于锁扣部的一侧；According to an embodiment of the present invention, when the reset drive part is located on the track of the closing rotation of the handle after the leakage bracket is rotated to the second position, the leakage tripping mechanism further includes a stop mechanism for locking the leakage bracket in the second position, preventing the The moving mechanism includes a cam, a stopper and a stopper compression spring. The cam is pivotally connected to the handle through the cam torsion spring. The stopper includes a trigger part engaged with the cam and a lock part engaged with or separated from the leakage driving part, and the connection part of the trigger part and the lock part is pivotally connected to the casing. The stopper compression spring is arranged on one side of the locking portion;

当漏电支架跟随手柄合闸转动至第一位置时，锁扣部与漏电驱动部分离并压缩止动件压簧；When the leakage bracket rotates to the first position following the closing of the handle, the locking part is separated from the leakage driving part and compresses the stopper compression spring;

当电路中出现剩余电流时，手柄分闸，漏电支架转动至第二位置并压缩漏电反力弹簧，止动件压簧的回复力驱动锁扣部与漏电驱动部扣合，触发部啮合凸轮，漏电反力弹簧和凸轮扭簧分别施加相反的作用力在止动件上以使锁扣件锁定漏电驱动部。When there is residual current in the circuit, the handle is opened, the leakage current bracket rotates to the second position and compresses the leakage current reaction force spring, the restoring force of the stopper compression spring drives the locking part to engage with the leakage current driving part, and the trigger part engages the cam, The leakage reaction force spring and the cam torsion spring respectively exert opposite forces on the stopper so that the locking member locks the leakage driving part.

当漏电支架跟随手柄合闸转动时，锁扣部和漏电驱动部解锁，止动件压簧的回复力顶推锁扣部以推动止动件转动，触发部和凸轮脱扣，漏电反力弹簧的回复力叠加于手柄推力以驱动漏电支架转动至第一位置。When the leakage bracket rotates following the closing of the handle, the locking part and the leakage driving part are unlocked, the restoring force of the stopper compression spring pushes the locking part to push the stopper to rotate, the trigger part and the cam are tripped, and the leakage reaction spring The restoring force is superimposed on the handle thrust to drive the leakage bracket to rotate to the first position.

根据本发明的一实施例，漏电驱动部与锁扣部相接触的表面为弧形曲面且曲面上具有一锁定台阶；在锁定状态下，锁扣部的端部抵接于锁定台阶；解锁时，锁扣部的端部从锁定台阶滑出。According to an embodiment of the present invention, the surface of the electric leakage driving part in contact with the locking part is an arc-shaped curved surface and a locking step is formed on the curved surface; in the locked state, the end of the locking part abuts against the locking step; when unlocking , the end of the locking part slides out from the locking step.

根据本发明的一实施例，漏电脱扣机构还包括支架安装板，支架安装板固定于壳体，漏电支架设置于支架安装板。According to an embodiment of the present invention, the leakage tripping mechanism further includes a bracket mounting plate, the bracket mounting plate is fixed to the housing, and the leakage bracket is arranged on the bracket mounting plate.

根据本发明的一实施例，支架本体向动触头所在的一侧延伸且延伸端通过支架枢轴连接于壳体，延长漏电驱动部的转动行程以触发脱扣架；支架本体上还具有活动孔，紧固件穿射活动孔将支架本体固定于壳体，支架本体沿活动孔的轨迹绕支架枢轴转动。According to an embodiment of the present invention, the bracket body extends toward the side where the moving contact is located, and the extending end is connected to the housing through the bracket pivot, extending the rotation stroke of the leakage drive part to trigger the tripping frame; the bracket body also has a movable The fastener penetrates the movable hole to fix the bracket body on the casing, and the bracket body rotates around the bracket pivot along the trajectory of the movable hole.

根据本发明的一实施例，复位驱动部为一复位拉杆，复位拉杆的一端固定连接于支架本体，自由端向手柄合闸转动所在的一侧延伸，手柄上具有与复位拉杆相配合的手柄驱动部，当漏电支架处于第二位置时复位拉杆自由端的端部位于手柄驱动部合闸转动的轨迹上，手柄合闸时，手柄驱动部抵接复位拉杆以使复位拉杆跟随手柄同向转动至第一位置并带动剩余电流脱扣器复位。According to an embodiment of the present invention, the reset drive part is a reset pull rod, one end of the reset pull rod is fixedly connected to the bracket body, and the free end extends to the side where the handle is closed and rotated, and the handle has a handle drive matched with the reset pull rod. When the leakage bracket is in the second position, the end of the free end of the reset lever is located on the track of the closing rotation of the handle driving part. When the handle is closed, the handle driving part abuts the reset lever so that the reset lever follows the handle and rotates in the same direction to the first position and drive the residual current release to reset.

根据本发明的一实施例，复位驱动部连接于支架本体且向手柄分闸侧延伸，手柄分闸侧上具有与复位驱动部相配合的手柄驱动部，当电路中存在剩余电流以使手柄分闸时，手柄驱动部带动复位驱动部沿手柄相反的方向转动至第一位置并带动剩余电流脱扣器复位。According to an embodiment of the present invention, the reset driving part is connected to the bracket body and extends to the opening side of the handle, and the opening side of the handle has a handle driving part matched with the reset driving part. When the switch is turned off, the handle drive part drives the reset drive part to rotate in the opposite direction of the handle to the first position and drives the residual current release to reset.

根据本发明的一实施例，剩余电流动作断路器还包括与脱扣架相对设置的短路脱扣机构和过载脱扣机构。According to an embodiment of the present invention, the residual current operated circuit breaker further includes a short-circuit release mechanism and an overload release mechanism arranged opposite to the release frame.

综上所述，本发明能提供的剩余电流动作断路器中漏电脱扣机构仅包含剩余电流检测件、剩余电流脱扣器以及枢接于壳体的漏电支架。在无剩余电流的合闸状态下，漏电支架稳定于第一位置。当电路中存在剩余电流时，剩余电流检测件驱动漏电支架从第一位置转动至第二位置，在转动的过程中脱扣驱动部触发位于其轨迹上的脱扣架，脱扣架和驱动轮解锁，动触头和静触头分离，手柄分闸。在手柄分闸或再次合闸时又带动漏电支架复位至指示无剩余电流的第一位置。本发明提供的剩余电流动作断路器通过一个枢接于壳体的漏电支架即实现漏电脱扣驱动和其自身的复位，大大简化了漏电脱扣的结构。此外，漏电支架只是简单的枢接于壳体即可，在安装时只需满足脱扣时，脱扣架一部分位于脱扣驱动部复位的运动轨迹上即可，安装简单且安装精度要求低，安装非常的方便。To sum up, the leakage tripping mechanism of the residual current operated circuit breaker provided by the present invention only includes the residual current detection element, the residual current tripper and the leakage current bracket pivotally connected to the casing. In the closed state with no residual current, the leakage support is stable in the first position. When there is residual current in the circuit, the residual current detector drives the leakage bracket to rotate from the first position to the second position. During the rotation, the tripping drive part triggers the tripping frame, the tripping frame and the driving wheel located on its track. Unlock, the moving contact and the static contact are separated, and the handle is opened. When the handle opens or closes again, it drives the leakage support to reset to the first position indicating no residual current. The residual current operated circuit breaker provided by the present invention realizes the leakage tripping drive and its own reset through a leakage current bracket pivotally connected to the casing, which greatly simplifies the structure of the leakage current tripping. In addition, the leakage bracket can be simply pivoted to the shell. When installing, it only needs to meet the tripping requirements, and a part of the tripping bracket can be located on the movement trajectory of the tripping drive part reset. The installation is simple and the installation accuracy requirements are low. Installation is very convenient.

此外，漏电支架还包括形成于支架本体的漏电指示部，漏电指示部跟随漏电支架位置的变化同步指示不同状态下的漏电脱扣情况；即漏电支架这一个部件集漏电脱扣、漏电指示以及复位于一体，极大简化了剩余电流动作断路器的结构。In addition, the leakage support also includes a leakage indicating part formed on the support body, and the leakage indicating part follows the change of the position of the leakage support to simultaneously indicate the leakage tripping in different states; It is located in one piece, which greatly simplifies the structure of the residual current operated circuit breaker.

为让本发明的上述和其它目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合附图，作详细说明如下。In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments are hereinafter described in detail together with the accompanying drawings.

附图说明Description of drawings

图1所示为本发明实施例一提供的剩余电流动作断路器在接通状态下其中一面的结构示意图。FIG. 1 is a schematic structural diagram of one side of the residual current operated circuit breaker provided in the first embodiment of the present invention in an on state.

图2所示为图1在断开状态下的结构示意图。FIG. 2 is a schematic structural diagram of FIG. 1 in the disconnected state.

图3所示为图1的在另一视角下的结构示意图。FIG. 3 is a schematic structural diagram of FIG. 1 from another viewing angle.

图4所示为图3所示的剩余电流动作断路器另一面的结构示意图。FIG. 4 is a schematic structural diagram of the other side of the residual current operated circuit breaker shown in FIG. 3 .

图5所示为图1中漏电支架和止动机构的分解示意图。FIG. 5 is an exploded schematic view of the leakage bracket and the stop mechanism in FIG. 1 .

图6所示为图1中手柄、驱动轮、脱扣架以及漏电支架的分解示意图。FIG. 6 is an exploded schematic view of the handle, the driving wheel, the trip frame and the leakage support in FIG. 1 .

图7所示为本发明实施例二提供的剩余电流动作断路器在接通状态下其中一面的结构示意图。FIG. 7 is a schematic structural diagram of one side of the residual current operated circuit breaker provided in the second embodiment of the present invention in an on state.

图8所示为图7在断开状态下的结构示意图。FIG. 8 is a schematic diagram of the structure of FIG. 7 in the disconnected state.

图9所示为图8在另一视角下的结构示意图。FIG. 9 is a schematic structural diagram of FIG. 8 from another viewing angle.

具体实施方式Detailed ways

现有的剩余电流动作断路器是基于弹簧片、脱扣杆以及复位杆的联动来实现漏电脱扣，结构非常的复杂且对每个部件本身以及其安装的精度要求均很高，不仅成本高且安装不方便。有鉴于此，本实施例提供一种结构简单、成本低且安装非常方便的剩余电流动作断路器。The existing residual current operated circuit breaker is based on the linkage of the spring leaf, the tripping rod and the reset rod to realize the leakage tripping. and inconvenient to install. In view of this, the present embodiment provides a residual current operated circuit breaker with simple structure, low cost and very convenient installation.

如图1至图3所示，本实施例提供的剩余电流动作断路器包括壳体10、手柄20、驱动轮30、脱扣架40、动触头50、静触头60以及漏电脱扣机构70。漏电脱扣机构70包括剩余电流检测件1、剩余电流脱扣器2以及漏电支架3。剩余电流检测件1检测电路中的剩余电流。剩余电流脱扣器2电性连接剩余电流检测件1且基于检测到的剩余电流而动作。漏电支架3包括支架本体31、复位驱动部32、漏电驱动部33以及脱扣驱动部34，图1、图3以及图5中用虚线对漏电支架中各个部分进行了划分。支架本体31枢接于壳体10，漏电支架3具有第一位置和第二位置。As shown in FIGS. 1 to 3 , the residual current operated circuit breaker provided in this embodiment includes a housing 10 , a handle 20 , a driving wheel 30 , a trip frame 40 , a movable contact 50 , a static contact 60 and a leakage tripping mechanism 70. The leakage tripping mechanism 70 includes a residual current detection element 1 , a residual current tripper 2 and a leakage current support 3 . The residual current detecting element 1 detects the residual current in the circuit. The residual current release 2 is electrically connected to the residual current detection element 1 and operates based on the detected residual current. The leakage bracket 3 includes a bracket body 31 , a reset driving part 32 , a leakage driving part 33 and a tripping driving part 34 . In FIGS. 1 , 3 and 5 , each part of the leakage bracket is divided by dotted lines. The bracket body 31 is pivotally connected to the housing 10 , and the leakage bracket 3 has a first position and a second position.

如图1所示，在无剩余电流的接通状态下，漏电支架3处于第一位置，驱动轮30和脱扣架40锁定，动触头50抵接静触头60且脱扣架40部分位于脱扣驱动部34的运动轨迹上。As shown in FIG. 1 , in the on state with no residual current, the leakage bracket 3 is in the first position, the driving wheel 30 and the tripping bracket 40 are locked, the moving contact 50 abuts the stationary contact 60 and the tripping bracket 40 is partially closed. It is located on the movement trajectory of the tripping drive part 34 .

当电路中存在剩余电流时，剩余电流脱扣器2触发漏电驱动部33以使漏电支架3从第一位置向第二位置转动并触发位于其运动轨迹上的脱扣架40转动以使脱扣架40与驱动轮30解锁，动触头50和静触头60分离且手柄20分闸，漏电支架3转动至第二位置。此时，复位驱动部32位于手柄20合闸转动的轨迹上，当手柄20再次合闸转动时，漏电支架3跟随手柄20联动并复位至第一位置。When there is a residual current in the circuit, the residual current release 2 triggers the leakage drive part 33 to rotate the leakage bracket 3 from the first position to the second position and triggers the trip bracket 40 located on its movement track to rotate to make the tripping The frame 40 and the driving wheel 30 are unlocked, the movable contact 50 and the static contact 60 are separated, the handle 20 is opened, and the leakage bracket 3 is rotated to the second position. At this time, the reset drive part 32 is located on the track of the handle 20 closing and rotating. When the handle 20 is closed and rotated again, the leakage bracket 3 is linked with the handle 20 and reset to the first position.

本实施例提供的剩余电流动作器中漏电支架3集漏电驱动部33、复位驱动部32以及脱扣驱动部34于一体，单个部件即同时实现了漏电脱扣触发和复位，极大简化了剩余电流动作断路器的整体结构和安装工序，大幅度降低了成本。进一步的，漏电支架3不与脱扣架40或驱动轮30连接，而只需满足：在合闸状态下，脱扣架40部分位于脱扣驱动部34脱扣转动的轨迹上即可。该设置在实现稳定的漏电脱扣的同时很好地避免了漏电支架3和其它部件之间的干涉，从而确保剩余电流动作断路器在每个脱扣条件(包括漏电状态、过载状态以及短路状态)下均能稳定且精确地脱扣。In the residual current actuator provided in this embodiment, the leakage bracket 3 integrates the leakage driving part 33 , the reset driving part 32 and the tripping driving part 34 , and a single component realizes the triggering and reset of the leakage tripping at the same time, which greatly simplifies the residual current The overall structure and installation process of the current-operated circuit breaker greatly reduces the cost. Further, the leakage bracket 3 is not connected to the tripping frame 40 or the driving wheel 30, but only needs to satisfy that in the closed state, the tripping frame 40 is partially located on the trajectory of the tripping rotation of the tripping drive part 34. This arrangement avoids the interference between the leakage support 3 and other components while achieving stable leakage tripping, thereby ensuring that the residual current operated circuit breaker is in each trip condition (including leakage state, overload state and short-circuit state). ) can trip stably and accurately.

于本实施例中，剩余电流检测件1为从壳体10的底部可拆式安装于壳体10内且用于检测电路中剩余电流的电磁互感器。剩余电流脱扣器2为设置于漏电驱动部33上方，在出现剩余电流时驱动漏电驱动部33转动的电磁继电器；具体而言，在出现剩余电流时，电磁继电器的顶杆21顶推漏电驱动部33。In this embodiment, the residual current detecting element 1 is an electromagnetic transformer detachably installed in the casing 10 from the bottom of the casing 10 and used for detecting the residual current in the circuit. The residual current release 2 is an electromagnetic relay that is arranged above the leakage current driving part 33 and drives the leakage current driving part 33 to rotate when a residual current occurs; specifically, when a residual current occurs, the ejector rod 21 of the electromagnetic relay pushes the leakage current driving part Section 33.

如图1和图5所示，支架本体31向动触头50所在的一侧延伸且延伸端通过支架枢轴36连接于壳体10。该设置很好地延长了脱扣驱动部34在脱扣时绕支架枢轴36转动的半径，从而延长了其脱扣转动的行程，确保其在转动时能撞击脱扣架40。脱扣驱动部34脱扣行程的延长增大了漏电支架1在第一位置时脱扣驱动部34和脱扣架40之间的距离，从而进一步避免了漏电支架3和脱扣架40之间的干涉，同时也降低了对漏电支架3的安装精度要求，在提高产品稳定性的同时又进一步降低了加工要求。As shown in FIGS. 1 and 5 , the bracket body 31 extends toward the side where the movable contact 50 is located, and the extending end is connected to the housing 10 through the bracket pivot 36 . This arrangement well prolongs the radius of rotation of the tripping drive part 34 around the bracket pivot 36 when tripping, thereby extending the trip of its tripping rotation and ensuring that it can hit the tripping frame 40 when it rotates. The extension of the tripping stroke of the tripping drive part 34 increases the distance between the tripping drive part 34 and the tripping bracket 40 when the leakage current bracket 1 is in the first position, thereby further avoiding the gap between the leakage current bracket 3 and the tripping bracket 40 It also reduces the installation accuracy requirements for the leakage bracket 3, and further reduces the processing requirements while improving the product stability.

如图1所示，漏电驱动部33通过漏电反力弹簧4安装于壳体10。为确保漏电支架3的稳定，支架本体31上还具有活动孔311，紧固件37穿射活动孔311将支架本体31固定于壳体10，支架本体31沿活动孔311的轨迹绕支架枢轴36在第一位置和第二位置之间稳定转动。具体而言，当紧固件37位于活动孔311下端位置时，如图1所示，漏电支架3处于第一位置；当紧固件37位于活动孔311上端位置时，如图3所示，漏电支架3处于第二位置。As shown in FIG. 1 , the leakage driving unit 33 is attached to the case 10 via the leakage reaction force spring 4 . In order to ensure the stability of the leakage bracket 3 , the bracket body 31 also has a movable hole 311 , the fastener 37 penetrates the movable hole 311 to fix the bracket body 31 to the housing 10 , and the bracket body 31 pivots around the bracket along the trajectory of the movable hole 311 . 36 is stably rotated between the first position and the second position. Specifically, when the fastener 37 is located at the lower end of the movable hole 311, as shown in FIG. 1, the leakage bracket 3 is in the first position; when the fastener 37 is located at the upper end of the movable hole 311, as shown in FIG. 3, The leakage support 3 is in the second position.

如图1所示，漏电支架3盖合安装于操作机构(操作机构包括脱扣架40和驱动轮30等部件)，漏电支架3和壳体10之间间隔操作机构。为便于漏电支架3的安装，于本实施例中，漏电脱扣机构70还包括固定于壳体10且横插于漏电支架3和操作机构之间的支架安装板6。漏电支架3通过支架枢轴36和紧固件37设置于支架安装板6。As shown in FIG. 1 , the leakage bracket 3 is mounted on the operating mechanism (the operating mechanism includes components such as the trip frame 40 and the driving wheel 30 ), and the operating mechanism is spaced between the leakage bracket 3 and the housing 10 . In order to facilitate the installation of the leakage bracket 3 , in this embodiment, the leakage tripping mechanism 70 further includes a bracket mounting plate 6 fixed to the casing 10 and horizontally inserted between the leakage bracket 3 and the operating mechanism. The leakage bracket 3 is arranged on the bracket mounting plate 6 through the bracket pivot 36 and the fastener 37 .

如图1和图5所示，复位驱动部32为一复位拉杆，复位拉杆的一端固定连接于支架本体31，自由端向手柄20合闸转动所在的一侧延伸，手柄20上具有与复位拉杆(复位驱动部32)相配合的手柄驱动部201。如图2所示，当漏电支架3处于第二位置时复位拉杆自由端的端部位于手柄驱动部201合闸转动的轨迹上，手柄20合闸时，手柄驱动部201抵接复位拉杆以使复位拉杆跟随手柄20同向(图2中顺时针方向)转动至第一位置并带动剩余电流脱扣器2内的顶杆21复位。然而，本发明对复位驱动部的具体结构不作任何限定。于其它实施例中，复位驱动件的形状也可不同，其只需满足在手柄合闸时跟随手柄驱动部向合闸方向复位转动至第一位置即可。As shown in Figures 1 and 5, the reset drive part 32 is a reset pull rod, one end of the reset pull rod is fixedly connected to the bracket body 31, and the free end extends to the side where the handle 20 is closed and rotated. (Reset drive part 32) The matched handle drive part 201. As shown in FIG. 2 , when the leakage bracket 3 is in the second position, the end of the free end of the reset lever is located on the track of the closing rotation of the handle driving part 201 . When the handle 20 is closed, the handle driving part 201 abuts the reset lever to make the reset The pull rod rotates in the same direction (clockwise in FIG. 2 ) to the first position along with the handle 20 and drives the ejector rod 21 in the residual current release 2 to reset. However, the present invention does not limit the specific structure of the reset driving part. In other embodiments, the shape of the reset driving member can also be different, and it only needs to be able to follow the handle driving part to reset and rotate to the first position in the closing direction when the handle is closed.

上述漏电支架3的设置实现了电路中存在剩余电流时的脱扣触发。进一步的，本实施例中，漏电支架3还包括形成于支架本体31且向壳体10的顶部方向延伸的漏电指示部35，漏电指示部35上具有表征无剩余电流状态的第一标识351和表征存在剩余电流脱扣状态的第二标识352。具体而言，于本实施例中，第一标识351为绿色的标识，第二标识352为红色标识。壳体10的顶部具有漏电指示观察窗101，漏电指示部35跟随支架本体31转动以使漏电指示观察窗101显示第一标识351或第二标识352。漏电指示部35的设置实现了漏电脱扣和漏电指示的同步快速指示。相比现有通过多个杠杆来实现漏电指示的剩余电流动作断路器，该设置也进一步简化了剩余电流动作断路器的结构。The arrangement of the above-mentioned leakage support 3 realizes the tripping triggering when there is residual current in the circuit. Further, in this embodiment, the leakage bracket 3 further includes a leakage indicator 35 formed on the bracket body 31 and extending toward the top of the housing 10 . The leakage indicator 35 has a first mark 351 and A second indicator 352 characterizing the existence of a residual current trip condition. Specifically, in this embodiment, the first mark 351 is a green mark, and the second mark 352 is a red mark. The top of the housing 10 has a leakage indication observation window 101 , and the leakage indication portion 35 rotates along with the bracket body 31 so that the leakage indication observation window 101 displays the first mark 351 or the second mark 352 . The setting of the leakage indication part 35 realizes the synchronous and rapid indication of the leakage tripping and the leakage indication. Compared with the existing residual current operated circuit breaker which realizes the leakage indication through multiple levers, this arrangement further simplifies the structure of the residual current operated circuit breaker.

于本实施例中，漏电驱动部33通过漏电反力弹簧4安装于支架安装板6。在无剩余电流的合闸状态下，漏电反力弹簧4处于自然状态以使漏电支架3处于稳态的第一位置且漏电指示部35上绿色的第一标识351稳定位于漏电指示观察窗101内。而当电路中存在剩余电流时，剩余电流脱扣器2内的顶杆21顶推漏电驱动部33并压缩漏电反力弹簧4，漏电支架3逆时针转动以实现脱扣。由于漏电反力弹簧4存在反力，漏电支架3无法稳定维持在第二位置上。此时，漏电指示部35上第二标识352将无法稳定于漏电指示观察窗101内。有鉴于此，于本实施例中，漏电脱扣机构70还包括将漏电支架3锁定在第二位置的止动机构5。然而，本发明对此不作任何限定。于其它实施例中，当不需要漏电指示时也可无需止动机构。In this embodiment, the leakage driving part 33 is mounted on the bracket mounting plate 6 through the leakage reaction force spring 4 . In the closing state with no residual current, the leakage reaction force spring 4 is in a natural state, so that the leakage support 3 is in the steady first position and the green first mark 351 on the leakage indicating part 35 is stably located in the leakage indicating observation window 101 . When there is residual current in the circuit, the ejector rod 21 in the residual current release 2 pushes the leakage current driving part 33 and compresses the leakage current reaction force spring 4, and the leakage current support 3 rotates counterclockwise to achieve tripping. Due to the reaction force of the leakage reaction force spring 4, the leakage support 3 cannot be stably maintained at the second position. At this time, the second mark 352 on the leakage indicating part 35 cannot be stabilized in the leakage indicating observation window 101 . In view of this, in this embodiment, the leakage tripping mechanism 70 further includes a stopper mechanism 5 for locking the leakage bracket 3 in the second position. However, the present invention is not limited to this. In other embodiments, the stop mechanism may not be required when the leakage indication is not required.

于本实施例中，止动机构5包括凸轮51、止动件52以及止动件压簧53。凸轮51通过凸轮扭簧511枢接于手柄20。止动件52包括与凸轮51相啮合的触发部521以及与漏电驱动部33扣合或分离的锁扣部522，触发部521和锁止部522的连接处枢接于支架安装板6。止动件压簧53设置于支架安装板6且位于锁扣部522的一侧。漏电驱动部33与锁扣部522相接触的表面为弧形曲面且曲面上具有一锁定台阶331。In this embodiment, the stopper mechanism 5 includes a cam 51 , a stopper 52 and a stopper compression spring 53 . The cam 51 is pivotally connected to the handle 20 through the cam torsion spring 511 . The stopper 52 includes a trigger portion 521 engaged with the cam 51 and a lock portion 522 engaged with or separated from the leakage drive portion 33 . The stopper compression spring 53 is disposed on the bracket mounting plate 6 and on one side of the locking portion 522. The surface of the leakage driving portion 33 in contact with the locking portion 522 is an arc-shaped curved surface and has a locking step 331 on the curved surface.

如图2所示，当漏电支架3跟随手柄20合闸转动时(图2中的顺时针方向)，手柄20和凸轮51之间发生相对运动，凸轮扭簧511被微微压缩，凸轮扭簧511的反力带动凸轮51向逆时针方向转动一很小的角度。该小角度的转动顶推触发部521以使止动件52顺时针转动，凸轮51和触发部521分离，凸轮51跟随手柄20顺时针转动，锁扣部522的端部从锁定台阶331滑出，止动机构5与漏电驱动部33解锁。凸轮51作用在漏电驱动部33上的作用力消失，漏电支架3在漏电反力弹簧4的回复力和手柄20的作用下顺时针转动至第一位置。于此同时，漏电驱动部33的弧形曲面挤推锁扣部522并微压止动件压簧53。As shown in FIG. 2 , when the leakage bracket 3 follows the handle 20 to close and rotate (clockwise in FIG. 2 ), a relative movement occurs between the handle 20 and the cam 51 , the cam torsion spring 511 is slightly compressed, and the cam torsion spring 511 The reaction force drives the cam 51 to rotate a small angle counterclockwise. The small-angle rotation pushes the trigger portion 521 to rotate the stopper 52 clockwise, the cam 51 and the trigger portion 521 are separated, the cam 51 rotates clockwise along with the handle 20 , and the end of the locking portion 522 slides out from the locking step 331 , the stop mechanism 5 and the leakage drive part 33 are unlocked. The force of the cam 51 acting on the leakage current driving part 33 disappears, and the leakage current support 3 rotates clockwise to the first position under the restoring force of the leakage current reaction force spring 4 and the action of the handle 20 . At the same time, the arc-shaped curved surface of the leakage driving portion 33 pushes the locking portion 522 and slightly presses the stopper compression spring 53 .

当电路中出现剩余电流时，手柄20分闸，漏电驱动部33被顶杆21顶推而逆时针转动并压缩漏电反力弹簧4，止动件压簧53的回复力驱动锁扣部522沿漏电驱动部33的弧形曲面滑入锁定台阶331内，触发部521啮合与凸轮51。漏电反力弹簧4通过漏电驱动部33对止动件52施加向上的顶推力，而凸轮51向止动件52施加向下的压力，两者作用力相反以使锁扣件522锁定漏电驱动部33，漏电支架3被限定在第二位置上，漏电指示观察窗101内显示红色的第二标识以表示剩余电流动作断路器当前处于漏电脱扣状态。When there is residual current in the circuit, the handle 20 is opened, the leakage driving part 33 is pushed by the ejector rod 21 to rotate counterclockwise and compress the leakage reaction force spring 4, and the restoring force of the stopper pressing spring 53 drives the locking part 522 along the The arc-shaped curved surface of the leakage driving part 33 slides into the locking step 331 , and the trigger part 521 engages with the cam 51 . The leakage reaction force spring 4 exerts an upward pushing force on the stopper 52 through the leakage drive part 33, while the cam 51 exerts a downward pressure on the stopper 52, and the two have opposite forces to make the lock 522 lock the leakage drive part. 33. The leakage support 3 is limited to the second position, and a second red mark is displayed in the leakage indication observation window 101 to indicate that the residual current operated circuit breaker is currently in a leakage trip state.

于本实施例中，如图4所示，剩余电流动作断路器还包括与脱扣架40相对设置的短路脱扣机构80和过载脱扣机构90。短路脱扣机构80为磁脱扣器，当电路出现短路时，磁脱扣器顶推脱扣架40转动而脱扣。过载脱扣机构90包括双金属片901和脱扣拉杆902，当电路出现过载时，双金属片变形而拉动脱扣架40脱扣。在短路脱扣或过载脱扣时，由于电路内没有剩余电流，剩余电流脱扣器2不动作，漏电支架3不会转动，漏电指示部35不会跟随手柄20分闸，仍然显示绿色的第一标识351。In this embodiment, as shown in FIG. 4 , the residual current operated circuit breaker further includes a short-circuit tripping mechanism 80 and an overload tripping mechanism 90 disposed opposite to the tripping frame 40 . The short-circuit release mechanism 80 is a magnetic release. When a short circuit occurs in the circuit, the magnetic release pushes the release frame 40 to rotate to release. The overload trip mechanism 90 includes a bimetal 901 and a trip rod 902. When the circuit is overloaded, the bimetal deforms and pulls the trip frame 40 to trip. In the case of short-circuit tripping or overload tripping, since there is no residual current in the circuit, the residual current release 2 will not act, the leakage bracket 3 will not rotate, and the leakage indicating part 35 will not follow the handle 20 to open, and the green No. A logo 351.

图1为剩余电流动作断路器处于接通状态下结构示意图。图2所示为处于断开状态下的结构示意图。以下将结合图1至图6详细介绍本实施例提供的剩余电流动作断路器的结构和工作原理。FIG. 1 is a schematic structural diagram of the residual current operated circuit breaker in the on state. Figure 2 shows a schematic diagram of the structure in the disconnected state. The structure and working principle of the residual current operated circuit breaker provided in this embodiment will be described in detail below with reference to FIGS. 1 to 6 .

如图2所示，当剩余电流动作断路器处于断开状态时，漏电支架3处于第二位置，即紧固件37位于活动孔311的上端位置，止动机构5锁定漏电驱动部33，漏电指示部35稳定显示红色的第二标识352。沿图中箭头K所示方向顺时针推动手柄20合闸，手柄20通过双U型连杆100推动驱动轮30，驱动轮30和脱扣架40啮合并锁定双U型连杆100。手柄20通过双U型连杆100带动驱动轮30、脱扣架40以及动触头50联动以使动触头50抵接静触头60；于此同时，手柄20上的手柄驱动部201抵推复位拉杆(复位驱动部32)的上端并带动漏电支架3顺时针运动，凸轮51跟随手柄20联动并脱离触发部521，止动机构5与漏电驱动部33解锁。漏电支架3在漏电反力弹簧4的回复力和复位拉杆的作用下顺时针运动至图1中的第一位置，即紧固件37位于活动孔311的下端位置，漏电指示观察窗101内显示绿色的第一标识351。漏电反力弹簧4回复至自然状态，于此同时剩余电流脱扣件2中的顶杆21被顺时针转动的漏电驱动部33向上顶推回缩。As shown in FIG. 2 , when the residual current operated circuit breaker is in the disconnected state, the leakage current bracket 3 is in the second position, that is, the fastener 37 is located at the upper end of the movable hole 311 , the stopper mechanism 5 locks the leakage current driving part 33 , and the leakage current The indicator portion 35 displays the second indicator 352 in red stably. Push the handle 20 clockwise in the direction indicated by arrow K in the figure to close, the handle 20 pushes the driving wheel 30 through the double U-shaped link 100 , the driving wheel 30 engages with the trip frame 40 and locks the double U-shaped link 100 . The handle 20 drives the driving wheel 30 , the tripping frame 40 and the moving contact 50 through the double U-shaped connecting rod 100 to link together to make the moving contact 50 abut the stationary contact 60 ; at the same time, the handle driving part 201 on the handle 20 abuts Push the upper end of the reset pull rod (reset drive part 32 ) and drive the leakage bracket 3 to move clockwise. The leakage bracket 3 moves clockwise to the first position in FIG. 1 under the action of the restoring force of the leakage reaction force spring 4 and the reset lever, that is, the fastener 37 is located at the lower end of the movable hole 311 , and the leakage indication observation window 101 displays Green first logo 351. The leakage reaction force spring 4 returns to its natural state, and at the same time, the ejector rod 21 in the residual current trip element 2 is pushed upward and retracted by the leakage current driving part 33 that rotates clockwise.

在图1所示的接通状态下，当剩余电流检测件1检测到电路中存在剩余电流时，剩余电流脱扣器2中的顶杆21向下顶推漏电驱动部33以使漏电支架3沿逆时针方向转动并压缩漏电反力弹簧4。漏电支架3转动过程中，脱扣驱动部34撞击位于其运动轨迹上的脱扣架40上的脱扣架支点401以使脱扣架40沿逆时针方向转动。脱扣架40和驱动轮30解锁，驱动轮30在复位拉簧301的作用下带动动触头50逆时针运动，与静触头60分离；而手柄20在手柄扭簧202的作用下沿逆时针分闸。止动机构5上的锁扣部522沿漏电驱动部33的弧形曲面滑入锁定台阶331，触发部521与凸轮51啮合，止动机构5将漏电支架3锁定在第二位置(如图2所示)，漏电指示观察窗101内显示红色的第二标识352。In the on state shown in FIG. 1 , when the residual current detection element 1 detects that there is residual current in the circuit, the ejector rod 21 in the residual current release 2 pushes down the leakage current driving part 33 to make the leakage current support 3 Turn and compress the leakage reaction force spring 4 counterclockwise. During the rotation of the leakage bracket 3 , the tripping drive part 34 strikes the tripping bracket fulcrum 401 on the tripping bracket 40 located on its movement track to make the tripping bracket 40 rotate counterclockwise. The trip frame 40 and the driving wheel 30 are unlocked, and the driving wheel 30 drives the movable contact 50 to move counterclockwise under the action of the reset tension spring 301 and separates from the static contact 60; The hour hand opens. The locking portion 522 on the stop mechanism 5 slides into the locking step 331 along the curved surface of the leakage drive portion 33, the trigger portion 521 engages with the cam 51, and the stop mechanism 5 locks the leakage bracket 3 in the second position (as shown in FIG. 2 ). shown), a red second mark 352 is displayed in the leakage indication observation window 101 .

于本实施例中，剩余电流动作断路器还包括与手柄20联动且具有不同颜色标识通断指示部(由于视角的原因，图未示出)，通断指示部用于显示断路器合闸或分闸状态。壳体10上具有与通断指示部相对应的通断状态观察窗102。即本实施例提供的剩余电流动作断路器同时具有通断指示和漏电指示且两者相互独立。具体而言，当剩余电流动作断路器接通时，通断指示显示红色，漏电指示显示绿色。当剩余电流动作断路器手动断开、短路断开或过载断开时通断指示显示绿色，而漏电指示显示绿色不变；当剩余电流动作断路器因为电路中出现剩余电流而断开时通断指示显示绿色，漏电指示显示红色。In this embodiment, the residual current operated circuit breaker also includes an on-off indication part linked with the handle 20 and marked with different colors (due to the viewing angle, not shown in the figure). open state. The casing 10 has an on-off state observation window 102 corresponding to the on-off indicator portion. That is, the residual current operated circuit breaker provided in this embodiment has both on-off indication and leakage indication, and the two are independent of each other. Specifically, when the residual current operated circuit breaker is turned on, the on-off indication shows red, and the leakage indication shows green. When the residual current operated circuit breaker is manually disconnected, short circuit disconnected or overload disconnected, the on-off indication will display green, while the leakage indication will remain green; when the residual current operated circuit breaker is disconnected due to residual current in the circuit The indication shows green, and the leakage indication shows red.

实施例二 Embodiment 2

本实施例与实施例一及其变化基本相同，区别在于：本实施例提供的剩余漏电动作断路器中漏电支架复位方式不同且无漏电指示部和止动机构。This embodiment is basically the same as the first embodiment and its changes, except that the residual leakage circuit breaker provided in this embodiment has a different reset method of the leakage bracket and no leakage indicating part and stopper mechanism.

如图7至图9所示，于本实施例中，当电路中存在剩余电流，漏电支架3转动至第二位置后，复位驱动部33位于手柄20分闸转动的轨迹上，手柄20分闸转动时漏电支架3跟随手柄20联动并复位至第一位置。具体而言：复位驱动部32连接于支架本体31且向手柄20分闸侧延伸(图7中为沿壳体左上角所在的方向沿)，手柄20分闸侧上具有与复位驱动部32相配合的手柄驱动部201。当电路中存在剩余电流以使手柄20分闸时，手柄驱动部201带动复位驱动部32沿与手柄20分闸相反的方向转动至第一位置并带动剩余电流脱扣器2复位。As shown in FIG. 7 to FIG. 9 , in this embodiment, when there is residual current in the circuit, after the leakage bracket 3 is rotated to the second position, the reset driving part 33 is located on the track of the opening rotation of the handle 20 , and the handle 20 is opened. When rotating, the leakage bracket 3 is linked with the handle 20 and reset to the first position. Specifically: the reset driving part 32 is connected to the bracket body 31 and extends to the opening side of the handle 20 (in the direction of the upper left corner of the casing in FIG. 7 ), and the opening side of the handle 20 has a corresponding reset driving part 32 on the opening side. The matching handle driving part 201 . When there is residual current in the circuit to open the handle 20, the handle driving part 201 drives the reset driving part 32 to rotate to the first position in the opposite direction to the opening of the handle 20 and drives the residual current release 2 to reset.

图7所示为本实施例提供的剩余电流动作断路器在接通状态下的结构示意图；图8为图7处于断开状态下的结构示意图；图9所示为图8在另一视角下的结构示意图。FIG. 7 shows a schematic structural diagram of the residual current operated circuit breaker provided in this embodiment in an on state; FIG. 8 is a structural schematic diagram of FIG. 7 in an off state; FIG. 9 shows FIG. 8 from another perspective Schematic diagram of the structure.

当处于接通状态下的剩余电流动作断路器(图7)中的剩余电流检测件1检测到电路中存在剩余电流时，剩余电流脱扣器2的顶杆21向下顶推漏电驱动部33以使漏电支架3沿图7中逆时针方向转动至第二位置，漏电反力弹簧4被压缩，紧固件37位于活动孔311的上端位置。在漏电支架3逆时针转动的过程中，脱漏驱动部34撞击位于其运动轨迹上的脱扣架支点401，脱扣架40和驱动轮30解锁，驱动轮30在复位拉簧301的作用下带动动触头50逆时针运动，与静触头60分离；而手柄20在手柄扭簧202的作用下沿逆时针转动复位。于此同时，在手柄分闸的过程中，逆时针转动的手柄驱动部201抵推复位驱动部32以使复位驱动部32绕支架枢轴36顺时针转动。漏电驱动部33在复位驱动部32和漏电反力弹簧4的共同作用下顺时针转动并向上推动剩余电流脱扣器2的顶杆21复位，漏电支架3转动回复至图8中的第一位置。When the residual current detection element 1 in the residual current operation circuit breaker ( FIG. 7 ) in the ON state detects that there is residual current in the circuit, the ejector rod 21 of the residual current release 2 pushes down the leakage drive part 33 In order to rotate the leakage support 3 to the second position in the counterclockwise direction in FIG. 7 , the leakage reaction force spring 4 is compressed, and the fastener 37 is located at the upper end of the movable hole 311 . During the counterclockwise rotation of the leakage bracket 3 , the leakage driving part 34 hits the tripping bracket fulcrum 401 located on its motion track, the tripping bracket 40 and the driving wheel 30 are unlocked, and the driving wheel 30 is driven by the return tension spring 301 The movable contact 50 moves counterclockwise and separates from the stationary contact 60 ; and the handle 20 is rotated counterclockwise under the action of the handle torsion spring 202 to reset. At the same time, in the process of the handle opening, the handle driving part 201 that rotates counterclockwise pushes the reset driving part 32 so that the reset driving part 32 rotates clockwise around the bracket pivot 36 . The leakage drive part 33 rotates clockwise under the combined action of the reset drive part 32 and the leakage reaction force spring 4 and pushes the top rod 21 of the residual current release 2 upward to reset, and the leakage bracket 3 rotates back to the first position in FIG. 8 . .

即在整个漏电脱扣过程中，漏电支架3只在漏电脱扣的初始时刻瞬时运动至第二位置上以撞击脱扣架支点401。而在脱扣的过程中，漏电支架3又被分闸状态下的手柄复位至图8所示的第一位置。于本实施例中，由于漏电支架3只是短暂运动在第二位置上，故图未示出其位于第二位置上的状态。但其状态与实施例一中的图2类似，此时漏电反力弹簧4被压缩，紧固件37位于活动孔311的上端位置。That is, during the whole leakage tripping process, the leakage current support 3 only instantaneously moves to the second position at the initial moment of the leakage current tripping to hit the tripping bracket fulcrum 401 . During the tripping process, the leakage bracket 3 is reset to the first position shown in FIG. 8 by the handle in the open state. In this embodiment, since the leakage support 3 only moves to the second position for a short time, the state of the leakage support 3 in the second position is not shown in the figure. However, its state is similar to that shown in FIG. 2 in the first embodiment. At this time, the leakage reaction force spring 4 is compressed, and the fastener 37 is located at the upper end of the movable hole 311 .

在图8所示的状态下，推动手柄20沿箭头K所示的方向顺时针合闸，手柄20通过双U型连杆100带动驱动轮30和脱扣架40锁定，进而使动触头50抵接静触头60。在合闸的过程中，漏电支架3的状态不会发生变化。In the state shown in FIG. 8 , push the handle 20 to close the switch clockwise in the direction indicated by the arrow K, and the handle 20 drives the driving wheel 30 and the trip frame 40 to lock through the double U-shaped link 100 , thereby making the moving contact 50 locked. Abutting against the static contact 60 . During the closing process, the state of the leakage support 3 will not change.

本实施例提供的剩余电流动作断路器与实施例一及其变化相同，仅通过漏电支架3这一简单的部件即实现了漏电指示和复位，同时其也不与驱动轮或脱扣架直接接触，结构简单、安装容易且成本更低。The residual current operated circuit breaker provided in this embodiment is the same as the first embodiment and its changes. The leakage indication and reset can be realized only by the simple component of the leakage bracket 3, and it is not in direct contact with the driving wheel or the trip frame. , simple structure, easy installation and lower cost.

综上所述，本发明能提供的剩余电流动作断路器中漏电脱扣机构仅包含剩余电流检测件、剩余漏电脱扣器以及枢接于壳体的漏电支架。在无剩余电流的合闸状态下，漏电支架稳定于第一位置。当电路中存在剩余电流时，剩余电流脱扣器驱动漏电支架从第一位置转动至第二位置，在转动的过程中脱扣驱动部触发位于其轨迹上的脱扣架，脱扣架和驱动轮解锁，动触头和静触头分离，手柄分闸。在手柄分闸或再次合闸时又带动漏电支架复位至指示无剩余电流的第一位置。本发明提供的剩余电流动作断路器通过一个枢接于壳体的漏电支架即实现漏电脱扣驱动和其自身的复位，大大简化了漏电脱扣的结构。此外，漏电支架只是简单的枢接于壳体即可，在安装时只需满足脱扣时，脱扣架一部分位于脱扣驱动部复位的运动轨迹上即可，安装简单且安装精度要求低，安装非常的方便。To sum up, the leakage tripping mechanism of the residual current operated circuit breaker provided by the present invention only includes the residual current detecting element, the residual leakage tripper and the leakage current bracket pivotally connected to the casing. In the closed state with no residual current, the leakage support is stable in the first position. When there is residual current in the circuit, the residual current tripper drives the leakage bracket to rotate from the first position to the second position. During the rotation, the tripping drive part triggers the tripping frame located on its track, the tripping frame and the drive The wheel is unlocked, the moving contact and the static contact are separated, and the handle is opened. When the handle opens or closes again, it drives the leakage support to reset to the first position indicating no residual current. The residual current operated circuit breaker provided by the present invention realizes the leakage tripping drive and its own reset through a leakage current bracket pivotally connected to the casing, which greatly simplifies the structure of the leakage current tripping. In addition, the leakage bracket can be simply pivoted to the shell. When installing, it only needs to meet the tripping requirements, and a part of the tripping bracket can be located on the movement trajectory of the tripping drive part reset. The installation is simple and the installation accuracy requirements are low. Installation is very convenient.

虽然本发明已由较佳实施例揭露如上，然而并非用以限定本发明，任何熟知此技艺者，在不脱离本发明的精神和范围内，可作些许的更动与润饰，因此本发明的保护范围当视权利要求书所要求保护的范围为准。Although the present invention has been disclosed above by preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be subject to the scope of protection required by the claims.

Claims

一种剩余电流动作断路器，其特征在于，包括壳体、手柄、驱动轮、脱扣架、动触头、静触头以及漏电脱扣机构；所述漏电脱扣机构包括：A residual current operated circuit breaker is characterized in that it comprises a casing, a handle, a driving wheel, a trip frame, a moving contact, a static contact and a leakage tripping mechanism; the leakage tripping mechanism includes:

剩余电流检测件，检测电路中的剩余电流；Residual current detector, detecting the residual current in the circuit;

剩余电流脱扣器，电性连接剩余电流检测件且基于检测到的剩余电流而动作；A residual current release, which is electrically connected to the residual current detection element and operates based on the detected residual current;

漏电支架，包括支架本体、复位驱动部、漏电驱动部以及脱扣驱动部，支架本体枢接于壳体，所述漏电支架具有第一位置和第二位置；The leakage bracket includes a bracket body, a reset driving part, a leakage driving part and a tripping driving part, the bracket body is pivotally connected to the casing, and the leakage bracket has a first position and a second position;

在无剩余电流的状态下，漏电支架处于第一位置，驱动轮和脱扣架锁定，动触头抵接静触头且脱扣架部分位于脱扣驱动部的运动轨迹上；In the state of no residual current, the leakage bracket is in the first position, the driving wheel and the tripping frame are locked, the moving contact abuts the static contact, and the tripping frame is partially located on the movement track of the tripping drive part;

当电路中存在剩余电流时，剩余电流脱扣器触发漏电驱动部以使漏电支架从第一位置向第二位置转动并触发位于其运动轨迹上的脱扣架转动以使脱扣架与驱动轮解锁，动触头和静触头分离且手柄分闸；When there is residual current in the circuit, the residual current tripper triggers the leakage current drive part to rotate the leakage current bracket from the first position to the second position and triggers the rotation of the trip frame located on its movement track to make the trip frame and the driving wheel rotate Unlock, the moving contact and the static contact are separated and the handle is opened;

漏电支架转动至第二位置，复位驱动部位于手柄分闸转动或合闸转动的轨迹上，手柄分闸转动或合闸转动时漏电支架跟随手柄联动并复位至第一位置。The leakage bracket rotates to the second position, and the reset drive part is located on the track of the opening rotation or closing rotation of the handle. When the handle opens or closes, the leakage bracket is linked with the handle and resets to the first position.
根据权利要求1所述的剩余电流动作断路器，其特征在于，所述漏电支架还包括形成于支架本体且向壳体顶部方向延伸的漏电指示部，漏电指示部上具有表征无剩余电流状态的第一标识和表征存在剩余电流脱扣状态的第二标识，壳体的顶部具有漏电指示观察窗，漏电指示部跟随支架本体转动以使漏电指示观察窗显示第一标识或第二标识。The residual current operated circuit breaker according to claim 1, wherein the leakage support further comprises a leakage indicating portion formed on the support body and extending toward the top of the casing, and the leakage indicating portion has a signal indicating a state of no residual current. The first mark and the second mark indicating the existence of residual current tripping state, the top of the casing has a leakage indication observation window, and the leakage indication part rotates with the bracket body so that the leakage indication observation window displays the first mark or the second mark.
根据权利要求1或2所述的剩余电流动作断路器，其特征在于，漏电驱动部通过漏电反力弹簧安装于壳体，在无剩余电流的合闸状态下，漏电反力弹簧处于自然状态以使漏电支架处于稳态的第一位置；当电路中存在剩余电流时，剩余电流脱扣器触发漏电驱动部以使漏电支架转动至第二位置并压缩漏电反力弹簧。The residual current operated circuit breaker according to claim 1 or 2, wherein the leakage current driving part is installed on the casing through the leakage current reaction force spring, and in the closing state without residual current, the leakage current reaction force spring is in a natural state to The leakage bracket is in a steady state first position; when there is residual current in the circuit, the residual current release triggers the leakage drive part to rotate the leakage bracket to the second position and compress the leakage reaction force spring.
根据权利要求3所述的剩余电流动作断路器，其特征在于，当漏电支架转动至第二位置后复位驱动部位于手柄合闸转动的轨迹上时，漏电脱扣机构还包括将漏电支架锁定在第二位置的止动机构，所述止动机构包括：The residual current operated circuit breaker according to claim 3, wherein when the reset drive part is located on the track of the closing rotation of the handle after the leakage bracket is rotated to the second position, the leakage tripping mechanism further comprises locking the leakage bracket on the The stop mechanism in the second position, the stop mechanism includes:

凸轮，通过凸轮扭簧枢接于手柄；The cam is pivotally connected to the handle through the cam torsion spring;

止动件，包括与凸轮相啮合的触发部以及与漏电驱动部扣合或分离的锁扣部，触发部和锁止部的连接处枢接于壳体；The stopper includes a trigger part engaged with the cam and a lock part engaged with or separated from the leakage driving part, and the connection between the trigger part and the lock part is pivotally connected to the housing;

止动件压簧，设置于锁扣部的一侧；The stopper compression spring is arranged on one side of the locking portion;

当漏电支架跟随手柄合闸转动时，凸轮扭簧带动凸轮沿相反方向顶推触发部以使止动件转动，锁扣部与漏电驱动部分离并压缩止动件压簧；When the leakage bracket rotates following the closing of the handle, the cam torsion spring drives the cam to push the trigger part in the opposite direction to make the stopper rotate, and the locking part separates from the leakage drive part and compresses the stopper compression spring;

当电路中出现剩余电流时，手柄分闸，漏电支架转动至第二位置并压缩漏电反力弹簧，止动件压簧的回复力驱动锁扣部与漏电驱动部扣合，触发部啮合于凸轮，漏电反力弹簧和凸轮扭簧分别施加相反的作用力在止动件上以使锁扣件锁定漏电驱动部。When there is residual current in the circuit, the handle is opened, the leakage current bracket rotates to the second position and compresses the leakage current reaction force spring, the restoring force of the stopper compression spring drives the locking part to engage with the leakage current driving part, and the trigger part engages with the cam , the leakage reaction force spring and the cam torsion spring respectively exert opposite forces on the stopper so that the locking element locks the leakage driving part.
根据权利要求4所述的剩余电流动作断路器，其特征在于，漏电驱动部与锁扣部相接触的表面为弧形曲面且曲面上具有一锁定台阶；在锁定状态下，锁扣部的端部抵接于锁定台阶；解锁时，锁扣部的端部从锁定台阶滑出。The residual current operated circuit breaker according to claim 4, characterized in that, the surface of the leakage driving part in contact with the locking part is an arc-shaped curved surface with a locking step on the curved surface; in the locked state, the end of the locking part is The locking part abuts on the locking step; when unlocking, the end of the locking part slides out from the locking step.
根据权利要求1所示的剩余电流动作断路器，其特征在于，所述漏电脱扣机构还包括支架安装板，所述支架安装板固定于壳体，漏电支架设置于支架安装板。The residual current operated circuit breaker according to claim 1, wherein the leakage tripping mechanism further comprises a bracket mounting plate, the bracket mounting plate is fixed to the casing, and the leakage bracket is arranged on the bracket mounting plate.
根据权利要求1所述的剩余电流动作断路器，其特征在于，所述支架本体向动触头所在的一侧延伸且延伸端通过支架枢轴连接于壳体，延长漏电驱动部的转动行程以触发脱扣架；支架本体上还具有活动孔，紧固件穿射活动孔将支架本体固定于壳体，支架本体沿活动孔的轨迹绕支架枢轴转动。The residual current operated circuit breaker according to claim 1, wherein the bracket body extends toward the side where the moving contact is located, and the extension end is connected to the housing through the bracket pivot, extending the rotation stroke of the leakage drive part to The tripping frame is triggered; the frame body is also provided with a movable hole, the fastener penetrates the movable hole to fix the frame body on the casing, and the frame body pivots around the frame along the trajectory of the movable hole.
根据权利要求1所述的剩余电流动作断路器，其特征在于，所述复位驱动部为一复位拉杆，复位拉杆的一端固定连接于支架本体，自由端向手柄合闸转动所在的一侧延伸，手柄上具有与复位拉杆相配合的手柄驱动部，当漏电支架处于第二位置时复位拉杆自由端的端部位于手柄驱动部合闸转动的轨迹上，手柄合闸时，手柄驱动部抵接复位拉杆以使复位拉杆跟随手柄同向转动至第一位置并带动剩余电流脱扣器复位。The residual current operated circuit breaker according to claim 1, wherein the reset driving part is a reset pull rod, one end of the reset pull rod is fixedly connected to the bracket body, and the free end extends to the side where the handle is closed and rotated, The handle has a handle drive part matched with the reset pull rod. When the leakage bracket is in the second position, the end of the free end of the reset pull rod is located on the track of the closing rotation of the handle drive part. When the handle is closed, the handle drive part abuts the reset pull rod In order to make the reset lever follow the handle to rotate to the first position in the same direction and drive the residual current release to reset.
根据权利要求1所述的剩余电流动作断路器，其特征在于，所述复位驱动部连接于支架本体且向手柄分闸侧延伸，手柄分闸侧上具有与复位驱动部相配合的手柄驱动部，当电路中存在剩余电流以使手柄分闸时，手柄驱动部带动复位驱动部沿手柄相反的方向转动至第一位置并带动剩余电流脱扣器复位。The residual current operated circuit breaker according to claim 1, wherein the reset driving part is connected to the bracket body and extends to the opening side of the handle, and the opening side of the handle has a handle driving part matched with the reset driving part , when there is residual current in the circuit to open the handle, the handle drive part drives the reset drive part to rotate to the first position along the opposite direction of the handle and drives the residual current release to reset.
根据权利1所述的剩余电流动作断路器，其特征在于，所述剩余电流动作断路器还包括与所述脱扣架相对设置的短路脱扣机构和过载脱扣机构。The residual current operated circuit breaker according to claim 1, wherein the residual current operated circuit breaker further comprises a short-circuit trip mechanism and an overload trip mechanism arranged opposite to the trip frame.