CN113707472A - Operating mechanism capable of preventing circuit breaker from being switched on by mistake - Google Patents
Operating mechanism capable of preventing circuit breaker from being switched on by mistake Download PDFInfo
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- CN113707472A CN113707472A CN202010430977.2A CN202010430977A CN113707472A CN 113707472 A CN113707472 A CN 113707472A CN 202010430977 A CN202010430977 A CN 202010430977A CN 113707472 A CN113707472 A CN 113707472A
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- indicator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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Abstract
一种可防止断路器误合闸的操作机构，包括储能指示件、分合闸指示件、欠电压脱扣器判断机构、操作指示件、合闸半轴、综合判断件和驱动弹性件，所述储能指示件、分合闸指示件、欠电压脱扣器判断机构、操作指示件和合闸半轴分别单独且互不干涉地与综合判断件配合；在储能指示件、分合闸指示件、欠电压脱扣器判断机构均解除对综合判断件的限位时，综合判断件在驱动弹性件的作用下滑动至与合闸半轴配合的位置，同时综合判断件使操作指示件显示操作机构可合闸。本发明只有在储能指示件、分合闸指示件、欠电压脱扣器判断机构均为可合闸状态时，综合判断件才使操作指示件显示可以合闸并且与合闸半轴配合进行合闸，防止断路器被误合闸。
An operating mechanism that can prevent the circuit breaker from closing by mistake, including an energy storage indicator, an opening and closing indicator, an undervoltage release judgment mechanism, an operation indicator, a closing half shaft, a comprehensive judgment member and a driving elastic member, The energy storage indicator, the opening and closing indicator, the judgment mechanism of the undervoltage release, the operation indicator and the closing half-shaft cooperate with the comprehensive judgment separately and without interfering with each other; When both the indicator and the judgment mechanism of the undervoltage release release the limit on the comprehensive judgment piece, the comprehensive judgment piece slides to the position matched with the closing half shaft under the action of the driving elastic piece, and at the same time, the comprehensive judgment piece makes the operation indicator piece Indicates that the operating mechanism can be closed. In the present invention, only when the energy storage indicator, the opening and closing indicator, and the under-voltage release judging mechanism are all in a closed state, the comprehensive judgment can make the operation indicator show that the operation can be closed and cooperate with the closing half shaft. Closing to prevent the circuit breaker from being closed by mistake.
Description
Technical Field
The invention relates to a switching-on indicating mechanism of a circuit breaker operating mechanism, in particular to an operating mechanism capable of preventing a circuit breaker from being switched on by mistake.
Background
The operating mechanism is used for closing or opening a main contact of the circuit breaker, and the closing of the main contact is promoted by energy stored by an energy storage mechanism of the operating mechanism. The operating mechanism must satisfy the following three conditions to perform the closing operation: firstly, the under-voltage release must have electricity, if the under-voltage release does not have electricity, the opening half shaft is in a release state, even if the operating mechanism sends a closing instruction, the opening is carried out at the instant of closing, and the slipping phenomenon occurs; secondly, the energy storage mechanism of the operating mechanism stores energy completely, and when the energy storage of the operating mechanism is not completed, even if a closing instruction is sent, closing can not be completed because the energy can not be released; and thirdly, the breaker is in an open position, when the breaker is in a closed position, the closing instruction is sent again, so that the operating mechanism is struck by large force again on the closed position, and the mechanical strength of the whole mechanism can be influenced.
In the prior art, a closable indication structure capable of prompting closing information of an operating mechanism is provided, and the closable indication structure is respectively and directly in limit fit with a switching-off indication part, an energy storage indication part and an under-voltage tripping judgment device to obtain a closable signal, so that a closable state is indicated when the switching-off indication device, the energy storage indication device and the under-voltage tripping judgment device simultaneously send the closable signal. However, this structure has the following drawbacks: although this kind of mechanism can judge operating device whether is in can closing the state, can't prevent operating device when operating device is in but not closing the state that the operation from carrying out the mistake closing operation, can't effectively play the guard action to need additionally to increase a mistake switching-on prevention device, but this kind of mistake switching-on prevention device need respectively with the separating brake indicator, energy storage indicator, the spacing cooperation of under voltage dropout judgement device, occupation space is great, but also produce the phenomenon that can close the indicator and mistake switching-on prevention device state is asynchronous easily.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the operating mechanism which has small occupied space and high matching performance and can prevent the circuit breaker from being switched on by mistake.
In order to achieve the purpose, the invention adopts the following technical scheme:
an operating mechanism capable of preventing a circuit breaker from being switched on by mistake comprises an energy storage indicating piece, a switching-on and switching-off indicating piece, an under-voltage tripper judging mechanism and an operating indicating piece, wherein the energy storage indicating piece is used for indicating the energy storage state of the energy storage piece;
the energy storage indicating piece limits the comprehensive judgment piece when indicating that the energy storage is not finished, and relieves the limit of the comprehensive judgment piece when indicating that the energy storage is finished; the opening and closing indicating piece limits the comprehensive judgment piece when indicating that the main contact is not disconnected, and relieves the limit of the comprehensive judgment piece when indicating that the main contact is disconnected; the under-voltage release judging mechanism limits the comprehensive judgment piece when the working state of the under-voltage release is abnormal, and relieves the limit on the comprehensive judgment piece when the working state of the under-voltage release is normal;
when the energy storage indicating piece, the switching-on and switching-off indicating piece and the under-voltage release judging mechanism release the limit of the comprehensive judging piece, the comprehensive judging piece slides to the position matched with the switching-on half shaft under the action of the driving elastic piece to enable the circuit breaker to carry out switching-on operation, and meanwhile, the comprehensive judging piece can enable the operation indicating piece to display that the operating mechanism can be switched on.
Further, the comprehensive judgment piece is arranged on a side plate of the operating mechanism in a sliding mode, the comprehensive judgment piece is located below a switching-off half shaft of the under-voltage release judgment mechanism, and when the energy storage indicating piece, the switching-on and switching-off indicating piece and the under-voltage release judgment mechanism release the limit of the comprehensive judgment piece, the comprehensive judgment piece slides to the position matched with the switching-on half shaft under the action of the driving elastic piece, and the operating indicating piece can display that the operating mechanism can be switched on.
Further, the comprehensive judgment piece is arranged among the energy storage indicating piece, the switching-on and switching-off indicating piece, the under-voltage tripper judgment mechanism and the operation indicating piece, and comprises a first matching part, a second matching part, a third matching part and a fourth matching part, wherein the first matching part is in limit matching with the energy storage indicating piece and the switching-on and switching-off indicating piece respectively, the second matching part is in limit matching with the under-voltage tripper judgment mechanism, the third matching part is matched with the switching-on half shaft, and the fourth matching part is matched with the operation indicating piece;
after the first matching part and the second matching part are both relieved from limiting matching, the comprehensive judgment part slides to a position capable of being matched with the closing half shaft under the action of the driving elastic part, and the third matching part of the comprehensive judgment part can be matched with the closing half shaft.
The energy storage indicator, the switching-on and switching-off indicator, the operation indicator, the switching-on half shaft and the switching-off half shaft are arranged between the two side plates, and the switching-on and switching-off indicator, the operation indicator and the energy storage indicator are sequentially and parallelly rotatably arranged below the switching-on half shaft; a cam matched with the energy storage indicating piece is rotatably arranged on one side close to the energy storage indicating piece; a rotating shaft of an operating mechanism is arranged below the opening and closing half shaft, penetrates through the two side plates and is rotatably provided with an indicating part cantilever matched with the opening and closing indicating part; the side plate is provided with a sliding groove, the comprehensive judgment part is provided with a supporting piece matched with the sliding groove, after the energy storage indicating part, the opening and closing indicating part, the under-voltage tripper judgment mechanism and the comprehensive indicating part are all released from limit matching, one end of the comprehensive judgment part can slide to the upper part of the closing half shaft by the driving elastic part, and the other end of the comprehensive judgment part slides between the rotating shaft and the opening half shaft.
Furthermore, the energy storage indicating part comprises a first rocker arm which is rotatably installed and provided with an energy storage indicating identification part, a cam is rotatably installed on one side of the first rocker arm and is linked with the energy storage mechanism, a first convex arm which protrudes outwards is arranged on one side of the first rocker arm, a clamping groove is formed in the circumferential edge of the cam, and the first convex arm can be matched and clamped into the clamping groove of the cam when sliding along the circumferential edge of the cam; a second convex arm is arranged on the other side of the first rocker arm and is used for being matched with the first matching part;
when the energy storage indicator shows that energy storage is not finished, the first convex arm is matched with the edge of the cam to enable the first rocker arm not to rotate and enable the second convex arm to be abutted against the first matching part to keep limiting matching; when the energy storage indicator shows that the energy storage is finished, the first convex arm is clamped into the clamping groove of the cam, the rocker arm rotates along with the cam, and the second convex arm is separated from the first matching part along with the rotation of the first rocker arm so as to release the limiting matching.
Further, the switching-off and switching-on indicator comprises a second rocker arm which is rotatably installed and provided with a switching-off and switching-on indicator mark part, an indicator cantilever is rotatably installed on one side of the second rocker arm and is installed on a rotating shaft which is arranged between the side plates and used for driving the main contact to be switched on, a first action part and a second action part are arranged at one end of the second rocker arm, and a third action part is arranged on the indicator cantilever;
when the circuit breaker is switched on, the rotating shaft rotates to drive the main contact to be switched on, the indicating part cantilever rotates at the same time, the third acting part of the indicating part cantilever drives the switching-on and switching-off indicating part to rotate through the second acting part to indicate the switching-on, and when the switching-on and switching-off indicating part indicates the main contact to be switched on, the second acting part and the third acting part abut against each other to enable the second rocker arm not to rotate and enable the first acting part and the first matching part to abut against each other to keep spacing matching; when the breaker is opened, the rotating shaft drives the indicating part cantilever to rotate reversely, the third acting part is separated from the second acting part to indicate opening, when the opening and closing indicating part indicates that the main contact is disconnected, the second acting part is separated from the third acting part, and the second rocker arm rotates to enable the first acting part to be separated from the first matching part to remove limit matching.
Further, the under-voltage release judging mechanism comprises a rotatably mounted opening half shaft, and a release finger and a convex limiting boss are arranged on the opening half shaft;
when the undervoltage release is in power failure, the release finger of the opening half shaft is pressed down by the undervoltage release, and the limit boss is abutted against the second matching part to keep limit matching; when the undervoltage release is electrified, the undervoltage release is electrified to attract the opening half shaft without pressing down, and the release finger of the opening half shaft resets and rotates to separate the limiting boss from the second matching part so as to release the limiting matching.
Furthermore, the operation indicating part comprises a fourth rocker arm, the middle part of the fourth rocker arm is rotatably supported in the side plate, one end of the fourth rocker arm is used as an operation indicating identification part, the other end of the fourth rocker arm is used as a connecting end to be matched with the side plate through the second driving part, and the connecting end of the fourth rocker arm is in limit matching with the fourth matching part; after the first matching part and the second matching part are all relieved from limiting matching, the comprehensive judgment part moves between the side plates under the action of the driving elastic part to enable the third matching part to be matched with the switching-on half shaft, and meanwhile, in the moving process of the comprehensive judgment part, the operation indication part enables the operation indication mark part to rotate and display under the combined action of the fourth matching part and the second driving part to be operated.
Further, the comprehensive judgment piece comprises a rod body, one end of the rod body is provided with a straight edge, the straight edge is used as a first matching part of the comprehensive judgment piece, and the energy storage indicating piece and the opening and closing indicating piece are in independent limit matching with the first matching part; the other end of the rod body is the tail part of the comprehensive judgment part, and a driving part connected with the driving elastic part is arranged on the rod body between the first matching part and the tail part; an arc-shaped bulge is arranged on one side of the rod body close to the tail part and serves as a second matching part, and the second matching part is used for limiting and matching with the under-voltage release judging mechanism; a convex structure serving as a third matching part is arranged above the first matching part in an outward protruding mode, the third matching part is used for being matched with a closing half shaft, and an extending part matched with a closing button is arranged on the third matching part; a protruding structure serving as a fourth matching portion is arranged on one side of the middle of the rod body in a protruding mode, and the fourth matching portion is used for being matched with the operation indicating piece.
The device comprises a comprehensive judgment part, a first matching part and a second matching part, wherein the first matching part is used for matching with a micro switch on the outer side wall of the side plate; when the energy storage indicating piece, the opening and closing indicating piece and the under-voltage release judging mechanism are all in a closable state, the comprehensive judging piece enables the supporting piece to slide along the sliding groove of the side plate under the driving of the driving elastic piece.
Furthermore, the one end that the spout is close to the combined floodgate semi-axis is greater than the other end for support piece can rotate near combined floodgate semi-axis one end at the spout, can not rotate keeping away from combined floodgate semi-axis one end.
Further, arc-shaped protrusions serving as second matching parts are arranged on two sides, close to the tail, of the rod body of the comprehensive judgment part, and the side edge of the rod body between the arc-shaped protrusions on the two sides is used for extending into an open slot in a tripping half shaft of the undervoltage release judgment mechanism.
Further, the tail part of the rod body of the comprehensive judgment part protrudes downwards to be provided with a contact part, the opening and closing indicator comprises a second rocker arm which is rotatably installed and provided with an opening and closing indicator mark part, and an indicator cantilever is rotatably installed on one side of the second rocker arm.
Furthermore, be equipped with two spacing bosss on the separating brake semi-axis, two spacing bosss form the open slot in one side that the separating brake semi-axis is close to comprehensive indicator, it is spacing to extend in the open slot to synthesize the last side that the indicator corresponds.
According to the operating mechanism capable of preventing the circuit breaker from being switched on by mistake, the comprehensive judgment part is arranged among the energy storage indicating part, the switching-on and switching-off indicating part, the under-voltage tripper judgment mechanism and the operating indicating part, the comprehensive judgment part can enable the operating indicating part to display that the circuit breaker can be switched on only when the energy storage indicating part, the switching-on and switching-off indicating part and the under-voltage tripper judgment mechanism are in a switching-on state, and the comprehensive judgment part is matched with the switching-on half shaft to enable the circuit breaker to be switched on, so that the comprehensive judgment part can prevent the circuit breaker from being switched on by mistake at the same time, an additional anti-misoperation device does not need to be assembled, and the phenomenon that the operating indicating part and the comprehensive judgment part are not synchronous is avoided.
In addition, the comprehensive judgment piece is located in the layout structure among the energy storage indication piece, the opening and closing indication piece, the under-voltage release judgment mechanism and the operation indication piece, the arrangement is tight, and the occupied space is small.
In addition, a sliding groove which is in sliding fit with the supporting piece of the comprehensive judgment piece is arranged on the side plate in the shell, so that the comprehensive judgment piece can be matched with the micro switch arranged on the side plate at the same time, and an electric signal in an opening and closing state is output through the micro switch.
Drawings
Fig. 1 is a schematic structural diagram of an operating mechanism for preventing a circuit breaker from being switched on by mistake according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
fig. 3-4 are schematic structural diagrams of an energy storage indicator and a comprehensive judgment part in the operating mechanism capable of preventing the circuit breaker from being switched on by mistake according to the invention;
fig. 5-6 are schematic structural diagrams of a switching indicator and a comprehensive judgment part in the operating mechanism for preventing the circuit breaker from being switched on by mistake according to the invention;
fig. 7 is a schematic structural diagram of an undervoltage release determination mechanism and a comprehensive determination member in the operation mechanism capable of preventing the circuit breaker from being switched on by mistake according to the present invention;
fig. 8-9 are schematic structural views of an operation indicating member and a comprehensive judging member in the operating mechanism for preventing the circuit breaker from being switched on by mistake according to the present invention;
fig. 10 is a schematic structural view of a comprehensive judgment part in the operation mechanism for preventing the circuit breaker from being switched on by mistake according to the present invention.
Detailed Description
The following describes a specific embodiment of the operating mechanism for preventing the circuit breaker from being switched on by mistake, with reference to the embodiments shown in fig. 1 to 10. The operation mechanism capable of preventing the circuit breaker from being switched on by mistake of the present invention is not limited to the description of the following embodiments.
An operating mechanism capable of preventing a circuit breaker from being switched on by mistake comprises an energy storage indicating part 1 for indicating the energy storage state of the energy storage part, a switching-on and switching-off indicating part 2 for indicating the position of a main contact, an under-voltage release judging mechanism 3 for judging the state of the under-voltage release, an operating indicating part 5 for displaying whether the operating mechanism can be switched on or not, a switching-on half shaft 23 for realizing the switching-on of the main contact, a comprehensive judging part 4 and a driving elastic part 61 connected with the comprehensive judging part 4, wherein the energy storage indicating part 1, the switching-on and switching-off indicating part 2, the under-voltage release judging mechanism 3, the operating indicating part 5 and the switching-on half shaft 23 are respectively matched with the comprehensive judging part 4 independently and without interfering with each other;
the energy storage indicating part 1 limits the comprehensive judgment part 4 when indicating that the energy storage is not finished, and relieves the limit of the comprehensive judgment part 4 when indicating that the energy storage is finished; the opening and closing indicating member 2 limits the comprehensive judgment member 4 when indicating that the main contact is not disconnected, and releases the limit of the comprehensive judgment member 4 when indicating that the main contact is disconnected; the under-voltage release judging mechanism 3 limits the comprehensive judgment piece 4 when the working state of the under-voltage release is abnormal, and relieves the limit on the comprehensive judgment piece 4 when the working state of the under-voltage release is normal;
when the energy storage indicating member 1, the switching-on/off indicating member 2 and the undervoltage release judging mechanism 3 release the limit on the comprehensive judging member 4, the comprehensive judging member 4 slides to the position matched with the switching-on half shaft 23 under the action of the driving elastic member 61, so that the circuit breaker can be switched on, meanwhile, the comprehensive judging member 4 is separated from the operation indicating member 5, and the operation indicating member 5 displays that the operation mechanism can be switched on under the action of the driving elastic member 62.
According to the operating mechanism capable of preventing the circuit breaker from being switched on by mistake, the comprehensive judgment part 4 is arranged among the energy storage indicating part 1, the switching-on and switching-off indicating part 2, the under-voltage tripper judgment mechanism 3 and the operating indicating part 5, only when the energy storage indicating part 1, the switching-on and switching-off indicating part 2 and the under-voltage tripper judgment mechanism 3 are in a switching-on state, the comprehensive judgment part 4 can give way for the operating indicating part 5 to display that the circuit breaker can be switched on under the action of the driving elastic part 62, and the comprehensive judgment part 4 is matched with the switching-on half shaft 23 to carry out switching-on operation, so that the comprehensive judgment part 4 can prevent the circuit breaker from being switched on by mistake at the same time, a device for preventing the circuit breaker from being switched on by mistake is not required to be additionally assembled, and the phenomenon that the operating indicating part and the comprehensive judgment part 4 are not synchronous can be generated.
In an embodiment provided by combining fig. 1-9, an operating mechanism capable of preventing a circuit breaker from being switched on by mistake includes a housing, an operating mechanism for operating a main contact to switch on and off and an operation indicator 5 for displaying whether the operating mechanism can be switched on are provided in the housing, the operating mechanism includes an energy storage indicator 1 for indicating an energy storage state of the energy storage element, a switch-on and off indicator 2 for indicating a closing or opening position of the main contact, an undervoltage release judging mechanism 3 for judging a state of an undervoltage release, and a switch-on half shaft 23 for operating the main contact to switch on, and preferably, a window for displaying states of the energy storage indicator 1, the switch-on and off indicator 2, and the operation indicator 5 is provided on the housing; a comprehensive judgment part 4 for driving the operation indicator 5 is arranged among the energy storage indicator 1, the opening and closing indicator 2 and the undervoltage release judgment mechanism 3, the comprehensive judgment part 4 is provided with a driving part 45 and a plurality of matching parts, a driving elastic part 61 for connecting with the shell is arranged on the driving part 45, and the energy storage indicator 1, the opening and closing indicator 2, the opening half shaft 31 of the undervoltage release judgment mechanism 3, the operation indicator 5 and the closing half shaft 23 are respectively matched with the matching parts independently and mutually noninterfered; when the energy storage indicating member 1, the switching-on/off indicating member 2 and the undervoltage release judging mechanism 3 are all in a closable state, the comprehensive judging member 4 can slide in the shell to a position matched with the closing half shaft 23 under the action of the driving elastic member 61, and meanwhile, the comprehensive judging member 4 gives way for the operation indicating member 5 so as to display that the operation mechanism can be closed under the action of the driving elastic member 62. It should be noted that only when the energy storage indicator 1, the opening/closing indicator 2, and the undervoltage release determining mechanism 3 are all in the closable state, the comprehensive determining member 4 can slide to the position matched with the closing half shaft 23, so that the circuit breaker can perform the closing operation when the closing button is pressed, and in the other states, the comprehensive determining member 4 cannot slide to the position matched with the closing half shaft 23, and cannot perform the closing operation. The comprehensive judgment part 4 slides to a position matched with the closing half shaft 23 and is linked between the closing button and the closing half shaft 23, so that the closing button can drive the closing half shaft 23 to rotate through the comprehensive judgment part 4 to trigger closing; when the comprehensive judgment part 4 slides to the side far away from the closing half shaft 23, the closing can not be performed even if the closing button is pressed. Of course, the closing button may directly act on the comprehensive judgment part 4, or may indirectly act on the comprehensive judgment part 4.
The comprehensive judgment part 4 is arranged among the energy storage indicating part 1, the switching-on and switching-off indicating part 2, the under-voltage release judging mechanism 3 and the operation indicating part 5, and the plurality of matching parts of the comprehensive judgment part 4 comprise a first matching part 41 which is in limit matching with the energy storage indicating part 1 and the switching-on and switching-off indicating part 2, a second matching part 42 which is in limit matching with the under-voltage release judging mechanism 3, a third matching part 43 which is matched with the switching-on half shaft 23 and a fourth matching part 44 which is matched with the operation indicating part 5. The comprehensive judgment part 4 is located in the layout structure among the energy storage indicating part 1, the opening and closing indicating part 2, the under-voltage release judging mechanism 3 and the operation indicating part 5, and is tightly arranged and small in occupied space.
As shown in fig. 3-4, the energy storage indicator 1 includes a first rocker arm 11 provided with an energy storage indicator mark portion, when the energy storage indicator 1 indicates that energy storage is not completed (see fig. 3), the first matching portion 41 is in limit fit with the energy storage indicator 1, and when the energy storage indicator 1 indicates that energy storage is completed (see fig. 4), the first matching portion 41 is out of limit fit with the energy storage indicator 1.
As shown in fig. 5 to 6, the switching indicator 2 includes a second rocker arm 21 provided with a switching indicator mark portion, and when the switching indicator 2 indicates that the main contact is not disconnected (see fig. 5), the first engaging portion 41 is in limit engagement with the switching indicator 2, and when the switching indicator 2 indicates that the main contact is disconnected (see fig. 6), the first engaging portion 41 is out of limit engagement with the switching indicator 2.
As shown in fig. 6-7, the undervoltage release judging mechanism 3 includes a tripping half shaft 31, when the undervoltage release is not powered (see fig. 7), the second engaging portion 42 is in limit engagement with the tripping half shaft 31 of the undervoltage release judging mechanism 3, and when the undervoltage release is powered (see the portion of the tripping half shaft 31 in fig. 6), the second engaging portion 42 is out of limit engagement with the tripping half shaft 31 of the undervoltage release judging mechanism 3.
After the first matching part 41 and the second matching part 42 are both released from the limit matching, the comprehensive judgment part 4 slides in the housing to a position where the comprehensive judgment part can be matched with the closing half shaft 23 under the action of the driving elastic part 61, and the third matching part 43 of the comprehensive judgment part 4 can be matched with the closing half shaft 23 (see the positions of the closing half shaft 23 and the third matching part 43 in fig. 6 and 9), so that the third matching part 43 can be matched with the closing half shaft 23 for closing, and in the sliding process of the comprehensive judgment part 4, the fourth matching part 44 moves the operation indicator 5 to enable the operation indicator 5 to display that the operation mechanism can be closed. It should be noted that the spacing fit of the energy storage indicator 1, the opening and closing indicator 2 and the first fitting portion 41 do not interfere with each other, the spacing fit of the energy storage indicator 1 and the first fitting portion 41 is released and does not affect the spacing fit of the opening and closing indicator 2 and the first fitting portion 41, and the comprehensive judgment member 4 can slide only when the energy storage indicator 1 and the opening and closing indicator 2 are both released from the spacing fit of the first fitting portion 41 and the under-voltage release judgment mechanism 3 and the second fitting portion 42 are also released from the spacing fit.
The layout structure of the embodiment is that the energy storage indicator 1, the switching-on/off indicator 2, the operation indicator 5 and the switching-on half shaft 23 are arranged on one side of the shell, the switching-on half shaft 23 is positioned above the energy storage indicator 1, the switching-on/off indicator 2 and the operation indicator 5, and the space below the switching-on half shaft 23 is used for limiting and matching the comprehensive judgment part 4 with the energy storage indicator 1, the switching-on/off indicator 2 and the operation indicator 5; the opening half shaft 31 is arranged on the other side of the shell and is opposite to the closing half shaft 23, and under the driving action of the driving elastic part 61, the comprehensive judgment part 4 can slide in the shell between the opening half shaft 31 and the closing half shaft 23, so that the gap between each indicator is fully utilized, and the space utilization rate in the shell is improved.
As shown in fig. 1-2, an optimal layout structure is provided, the operating mechanism disposed in the circuit breaker housing includes two opposite side plates 6, the energy storage indicator 1, the switching indicator 2, the operation indicator 5, the switching half shaft 23 and the switching half shaft 31 are disposed between the two side plates 6, the switching indicator 2, the operation indicator 5 and the energy storage indicator 1 are sequentially and parallelly rotatably mounted below the switching half shaft 23, and a window (not shown) is disposed at a position opposite to the circuit breaker housing so as to observe states of the energy storage indicator 1, the switching indicator 2 and the operation indicator 5; a cam 12 matched with the energy storage indicating member 1 is rotatably arranged at one side close to the energy storage indicating member 1; a rotating shaft 71 of an operating mechanism is arranged below the opening half shaft 31, the rotating shaft 71 penetrates through the two side plates 6, and an indicator cantilever 22 matched with the opening and closing indicator 2 is rotatably arranged on the rotating shaft 71. The side plate 6 is provided with a sliding groove 63, the comprehensive judgment part 4 is provided with a supporting part 421 matched with the sliding groove 63, and the supporting part 421 can be used for pushing a micro switch on the outer side wall of the side plate 6 and outputting an electric signal in a switching-on/off state through the micro switch; after the energy storage indicator 1, the opening and closing indicator 2, the undervoltage release judging mechanism 3 and the comprehensive indicator 4 are all released from limit matching, one end of the comprehensive indicator 4 can slide to the upper part of the closing half shaft 23 by the matching of the driving elastic part 61, and the other end of the comprehensive indicator 4 slides between the rotating shaft 71 and the opening half shaft 31. The driving elastic member 61 in this embodiment is preferably a spring, one end of which is fixed to the side plate 6 and the other end of which is connected to the driving portion 45 of the comprehensive judgment member 4, and when one end of the comprehensive judgment member 4 slides above the closing half shaft 23, the spring serving as the driving elastic member 61 releases energy; then, the breaker is closed, and the comprehensive judgment part 4 slides to an original position indicating that the breaker cannot be closed, and stores energy as a spring for driving the elastic part 61. It should be noted that the comprehensive judgment part 4 is pushed by the energy storage indicating part 1, the switching-on/off indicating part 2 and the undervoltage release judging mechanism 3 together to return to the position where the switch can not be switched on; the indicating member cantilever 22 and the switching-on/off cantilever can be the same part, and certainly, an indicating member cantilever 22 can be additionally arranged without the switching-on/off cantilever.
Based on the layout structure in this embodiment, specific structures of the energy storage indicator 1, the opening/closing indicator 2, the undervoltage release determination mechanism 3, and the operation indicator 5 are provided.
As shown in fig. 3-4, the energy storage indicator 1 includes a first rocker arm 11 rotatably mounted between the inner side plates 6 of the housing, a cam 12 rotatably mounted on one side of the first rocker arm 11, the cam 12 being in linkage with the energy storage mechanism, a first protruding arm 111 protruding outward being provided on one side of the first rocker arm 11, a locking groove 121 being provided on a circumferential edge of the cam 12, the first protruding arm 111 being fittingly locked into the locking groove 121 of the cam 12 when sliding along the circumferential edge of the cam 12; a second convex arm 112 is arranged on the other side of the first rocker arm 11, the second convex arm 112 is used for being matched with the first matching part 41 of the comprehensive judgment part 4, preferably, the first rocker arm 11 is fan-shaped, one end of the first rocker arm 11 is an arc surface and is used as an energy storage indication mark part for displaying the state of an energy storage part, for example, "energy storage" is noted on the upper part of the arc surface, and "energy release" is noted on the lower part of the arc surface; the other end of the first rocker arm 11 is used for rotating connection, a groove is formed in the middle of the first rocker arm 11, a connecting shaft 72 penetrates through the groove, in the swinging process of the first rocker arm 11, the connecting shaft 72 is used for limiting the rotating position of the first rocker arm 11, and the connecting shaft 72 is matched with the groove to be used for switching marks on the energy storage indicating mark part. The first protruding arm 111 is formed by extending the arc edge of the first rocker arm 11 towards the cam 12, the second protruding arm 112 is located at a side far away from the cam 12, preferably, the second protruding arm 112 is convexly disposed at an end of the first rocker arm 11 for connection, and the second protruding arm 112 can be abutted against the first matching portion 41 of the comprehensive judgment part 4 to limit the sliding of the comprehensive judgment part 4 towards the direction of the closing half shaft 23.
The action processes of the comprehensive judgment part 4, the energy storage indicating part 1 and the cam 12 are as follows: cam 12 and energy storage mechanism linkage, cam 12 are installed on the V type axle of being connected with the handle, and through the handle drive of relapseing to swing many times and install the epaxial cam subassembly of V type and make energy storage mechanism energy storage, cam subassembly can include cam 12, and cam 12 can be the cam that directly is used for driving energy storage mechanism energy storage, perhaps cam 12 sets up alone on the V type axle specially be used for cooperating with energy storage indicator 1. When the energy storage is not completed and the energy storage indicator 1 indicates that the energy storage is not completed, the first convex arm 111 is matched with the edge of the cam 12 to enable the first rocker arm 11 not to rotate and enable the second convex arm 112 to be abutted against the first matching part 41 to keep limit matching (see fig. 3); when the energy storage is completed and the energy storage indicator 1 indicates that the energy storage is completed, the first convex arm 111 is clamped into the clamping groove 121 of the cam 12, the rocker arm rotates along with the cam 12, in the figure, the first rocker arm 11 rotates counterclockwise, and the second convex arm 112 is separated from the first matching part 41 along with the rotation of the first rocker arm 11 so as to release the limit matching (see fig. 4); when the switch is closed, the energy storage mechanism releases energy, the cam 12 resets along with the V-shaped shaft, the first convex arm 111 is matched with the edge of the cam 12, the cam 12 enables the first rocker arm 11 to rotate, the first rocker arm of the energy storage indicating piece 1 indicates that energy storage is not finished, the second convex arm 112 is abutted against the first matching part 41 to drive the comprehensive judgment piece 4 to slide towards the switching-off half shaft 31, the limiting matching is kept, and meanwhile, the comprehensive judgment piece 4 enables the operation indicating piece to display that the switch cannot be closed.
As shown in fig. 5-6, the switching indicator 2 includes a second rocker arm 21 rotatably mounted between two side plates 6 in the housing, a first acting portion 211 cooperating with the comprehensive judgment member 4 and a second acting portion 212 cooperating with the indicator suspension arm 22 are provided at one end of the second rocker arm 21, preferably, the second rocker arm 21 is rotatably mounted coaxially with the first rocker arm 11, one side of the second rocker arm 21 is used as a switching indicator portion and has a curved surface for indicating the switching condition, an upper portion of the curved surface is marked off, a lower portion of the curved surface is marked on, a middle portion of the second rocker arm 21 is provided with a groove, the groove of the second rocker arm 21 corresponds to the groove of the first rocker arm 11 in position and is used for passing through the same connecting shaft 72 to switch the curved surface identification, and the connecting shaft 72 is used for limiting the rotation position of the second rocker arm 21. A projection structure is provided as the second acting portion 212 on the side of the second swing arm 21 close to the indicator arm 22, and a projection structure is provided as the first acting portion 211 on the side of the second swing arm 21 close to the comprehensive judgment member 4. In the present embodiment, the first rocker arm 11 and the second rocker arm 21 are coaxially connected and are separately engaged with the first engaging portion 41 in a limiting manner, and preferably, the first acting portion 211 is a rod-shaped protrusion extending toward the first rocker arm 11, so that the first acting portion 211 can extend above the first protruding arm 111, and the first acting portion 211 and the first protruding arm 111 are respectively engaged with different positions of the first engaging portion 41 of the comprehensive judgment part 4. An indicator cantilever 22 is rotatably arranged at one side of the second rocker arm 21, the indicator cantilever 22 is preferably arranged on a rotating shaft 71 between the two side plates 6, the rotating shaft 71 drives the main contact of the circuit breaker to be switched on and off through a switching-on and switching-off cantilever arranged on the rotating shaft, the indicator arm 22 is provided with a third acting part 221, preferably, the third acting part 221 is a protruding structure arranged on one side of the indicator arm 22 close to the second rocker arm 21, the second acting part 212 and the third acting part 221 abut against each other to form a snap structure to limit the rotation of the second rocker arm 21, at this time, the first acting part 211 abuts against the first matching part 41 to limit the sliding of the comprehensive judgment part 4 towards the direction of the closing half shaft 23, after the snap-fit structure of the second acting portion 212 and the third acting portion 221 is disassembled, the second rocker arm 21 may rotate counterclockwise as shown in the drawing and thus the limit engagement of the first acting portion 211 and the first engaging portion 41 is released.
The action process of the comprehensive judgment part 4, the opening and closing indicator 2 and the indicator cantilever 22 is that when the circuit breaker is closed, the energy storage mechanism releases energy to drive the rotating shaft 71 to rotate through the link mechanism, the rotating shaft 71 drives the main contact to be closed through the opening and closing cantilever thereon, and simultaneously drives the indicator cantilever 22 to rotate, the third acting part 221 of the indicator cantilever 22 drives the opening and closing indicator 2 to rotate through the second acting part 212 to indicate the closing, when the opening and closing indicator 2 indicates that the main contact is closed, the second acting part 212 abuts against the third acting part 221 to make the second rocker 21 not rotate and make the first acting part 211 abut against the first matching part 41, and the comprehensive judgment part 4 is driven to slide towards the opening half shaft 31 and keep the limit matching (see fig. 5); when the circuit breaker is opened, the rotating shaft 71 drives the indicating part cantilever 22 to rotate reversely, the third acting part 221 is separated from the second acting part 212 to indicate opening, the opening indicating part 2 rotates reversely through the reset spring thereof, namely, after the indicating part cantilever 22 releases the limit of the opening and closing indicating part 2, the opening and closing indicating part 2 rotates reversely through the reset spring, and when the opening and closing indicating part 2 rotates reversely to indicate that the main contact is disconnected, the second rocker arm 21 rotates to separate the first acting part 211 from the first matching part 41 of the comprehensive judgment part 4 to release the limit matching (see fig. 6).
As shown in fig. 6-7, the undervoltage trip device determining mechanism 3 includes a switching-off half shaft 31 rotatably installed between two side plates 6 in the housing, a trip finger 311 and a convex limiting boss 312 are disposed on the switching-off half shaft 31, the limiting boss 312 is located at a side close to the comprehensive judgment part 4, after the switching-off half shaft 31 rotates counterclockwise, the limiting boss 312 contacts with the second matching part 42 to limit the sliding of the comprehensive judgment part 4, and after the switching-off half shaft 31 rotates clockwise, the limiting boss 312 and the second matching part 42 are released from limiting matching. Preferably, the number of the limiting bosses 312 is two, an open slot 313 (see fig. 2) is formed on one side of the opening half shaft 31 close to the comprehensive indicating member 4 by the two limiting bosses 312, the open slot 313 is used for limiting the comprehensive indicating member 4, the upper side edge corresponding to the comprehensive indicating member 4 extends into the open slot 313 for limiting, the comprehensive indicating member 4 is positioned between the rotating shaft 71 and the opening half shaft 31 under the limiting effect of the open slot 313, and can provide a guiding effect for the comprehensive indicating member 4 in the moving process of the comprehensive indicating member 4, and the end parts of the two limiting bosses 312 are respectively matched with the second matching parts 42 of the arc-shaped protrusions on the two sides of the comprehensive indicating member 4 to limit the sliding of the comprehensive indicating member 4.
The action process of the undervoltage release, the comprehensive judgment piece 4 and the undervoltage release judgment mechanism 3 is that when the undervoltage release is out of power, the tripping finger 311 of the opening half shaft 31 is pressed down by the undervoltage release, and the opening half shaft 31 rotates to enable the limiting boss 312 to abut against the second matching part 42 to keep limiting matching (see fig. 7); when the undervoltage release is electrified, the undervoltage release is electrified to attract the opening half shaft 31 without pressing down, the release finger 311 of the opening half shaft 31 resets and rotates to separate the limit boss 312 from the second matching part 42 of the comprehensive judgment part 4 so as to release the limit matching (see the opening half shaft 31, the release finger 311 and the limit boss 312 in fig. 6). It should be noted that the under-voltage release and the tripping half shaft 31 are the existing tripping cooperating mechanism, and in the closing state of the circuit breaker, when an under-voltage fault occurs, the under-voltage release acts to press the tripping finger 311 of the tripping half shaft 31, so that the tripping half shaft 31 rotates to release the limit and further trigger the circuit breaker to trip and trip, and in addition, the tripping half shaft 31 is usually also cooperating with a tripping button, other fault releases, and the like, which belongs to the prior art in the field and is not described herein again. The improvement of the invention for the under-voltage release judging mechanism 3 is that a comprehensive judging piece 4 is arranged, the existing opening half shaft 31 is improved, and a limit boss 312 is added for matching with the comprehensive judging piece 4 and judging whether the under-voltage release has the voltage meeting the requirement.
As shown in fig. 8 to 9, the operation indicator 5 includes a fourth rocker arm 51 provided with an operation indicator mark, the fourth rocker arm 51 being preferably located between the first rocker arm 11 and the second rocker arm 21; the middle part of the fourth rocker arm 51 is rotatably supported between the two side plates 6 in the shell, one end of the fourth rocker arm 51 serves as an operation indication identification part, the operation indication identification part is preferably fan-shaped, the upper part of the cambered surface of the operation indication identification part is marked with 'OK', the lower part of the cambered surface is marked with 'OK', a notch 52 is arranged on the lower side of the operation indication identification part, the notch 52 is used for being matched with a connecting shaft 72 to switch the state of the operation indication identification part, the connecting shaft 72 is the same connecting shaft 72 matched with the first rocker arm 11 and the second rocker arm 21, and the connecting shaft 72 is used for limiting the rotating position of the fourth rocker arm 51. The other end of the fourth rocker arm 51 is provided with a second driving element 62 which is matched with the side plate 6 as a connecting end, the connecting end of the fourth rocker arm 51 is in limit matching with the fourth matching portion 44 of the comprehensive judgment part 4, the preferred connecting end is bent into a right angle, and a hook structure is formed at the tail end of the vertical portion of the connecting end and is used for being connected with the second driving element 62, the vertical portion of the connecting end is used for being matched with the fourth matching portion 44 of the comprehensive judgment part 4, in the sliding process of the comprehensive judgment part 4, the second driving element 62 drives the fourth rocker arm 51 to rotate, the fourth matching portion 44 is used as a rotating fulcrum of the fourth rocker arm 51, the preferred second driving element 62 is a spring, and two ends of the second driving element 62 are respectively connected with the operation indicating part 5 and the side plate 6.
After the first engaging portion 41 and the second engaging portion 42 are disengaged from the limit engagement, the comprehensive judgment member 4 moves between the two side plates 6 under the action of the driving elastic member 61 so that the third engaging portion 43 can engage with the closing half shaft 23, and during the sliding of the comprehensive judgment member 4, the fourth engaging portion 44 of the comprehensive judgment member 4 slides in a direction away from the connecting end of the fourth rocker arm 51, and the operation indicator 5 rotates and displays the operation indicator part under the combined action of the fourth engaging portion 44 and the second driving member 62 (see fig. 9), in addition to which the fourth rocker arm 51 is kept in the non-closing state as shown in fig. 8.
With reference to fig. 10, an optimal structure of the comprehensive judgment part 4 is provided, where the comprehensive judgment part 4 includes a rod body, one end of the rod body has a straight edge, the straight edge is used as a first matching portion 41 of the comprehensive judgment part 4, the energy storage indicator 1 and the opening/closing indicator 2 are separately and limitedly matched with the first matching portion 41, and the energy storage indicator 1 and the opening/closing indicator 2 in this embodiment are respectively matched with different positions of the straight edge, so that the matching positions can be further optimized on the straight edge. The other end of the rod body is in an obtuse circle shape and serves as a tail portion of the comprehensive judgment piece 4, the tail portion of the comprehensive judgment piece 4 slides between the opening half shaft 31 and the rotating shaft 71, preferably, a contact portion 46 protrudes downwards from the tail portion of the comprehensive judgment piece 4, the contact portion 46 is used for keeping sliding contact with the rotating shaft 71, under the matching of the contact portion and the rotating shaft, the contact surface of the contact portion 46 is preferably an inclined surface, a groove serving as a driving portion 45 is formed in the rod body between the first matching portion 41 and the tail portion, preferably, an inlet is formed in the groove of the driving portion 45, as shown in fig. 3, 4 and 10, the driving portion 45 is bent to facilitate connection of one end of the driving elastic piece 61 and the driving portion 45, and the other end of the driving elastic piece 61 is fixed in the shell and preferably fixed on the side plate 6.
Be equipped with the arc arch as second cooperation portion 42 on the body of rod one side that is close to the afterbody, second cooperation portion 42 is used for judging 3 spacing cooperations of mechanism with under-voltage release, and is preferred, the body of rod of synthesizing judgement piece 4 is close to the afterbody both sides and all is equipped with the arc arch as second cooperation portion 42, and the body of rod side before the arc arch of both sides is arranged in stretching the open slot 313 on under-voltage release judgement mechanism 3's separating brake semi-axis 31. Preferably, as shown in fig. 1 and 10, the second engaging portion 42 extends toward the side plate 6, a rod-shaped structure is protruded from a side surface of the second engaging portion 42 to serve as a supporting member 421, the supporting member 421 is slidably engaged with the sliding groove 63 of the side plate 6, and when the energy storage indicator 1, the switching indicator 2, and the undervoltage release determining mechanism 3 are all in a switchable state, the comprehensive determining member 4 is driven by the driving elastic member 61 to slide the supporting member 421 along the sliding groove 63 of the side plate 6. Furthermore, the supporting member 421 passes through the sliding slot 63 and extends out of the side plate 6, and can be matched with the micro switch to send out a closable electrical signal and an non-closable electrical signal.
A protruding structure serving as a third matching portion 43 is arranged above the first matching portion 41 in an outward protruding manner, the third matching portion 43 is used for matching with the closing half shaft 23, specifically, matching with a boss structure on one side of the closing half shaft 23, an extending portion 431 matching with a closing button is arranged on the third matching portion 43, the extending portion 431 is used for enabling the third matching portion 43 to match with the closing half shaft 23, the closing button is pressed to act on the extending portion 431, and then the closing half shaft 23 is rotated through the third matching portion 43 to trigger a closing action, so that the energy storage mechanism releases energy. A protruding structure serving as a fourth matching portion 44 is convexly arranged on one side of the middle of the rod body, the fourth matching portion 44 and the third matching portion 43 are located on the same side of the rod body, the fourth matching portion 44 is used for matching with the operation indicating member 5, specifically, the connecting end of the operation indicating member 5 is matched with the fourth matching portion 44 to be used for driving the operation indicating member 5 in the sliding process of the comprehensive judgment member 4, and serves as a rotation fulcrum of the operation indicating member 5 when the second driving member 62 drives the operation indicating member 5 to rotate. Further, one end of the sliding groove 63 close to the closing half shaft 23 is larger than the other end of the sliding groove 63, so that the supporting piece 421 can rotate at the end of the sliding groove 63 close to the closing half shaft 23 and cannot rotate at the end far away from the closing half shaft 23.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010430977.2A CN113707472B (en) | 2020-05-20 | 2020-05-20 | Operating mechanism to prevent accidental closing of circuit breakers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010430977.2A CN113707472B (en) | 2020-05-20 | 2020-05-20 | Operating mechanism to prevent accidental closing of circuit breakers |
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| CN113707472A true CN113707472A (en) | 2021-11-26 |
| CN113707472B CN113707472B (en) | 2025-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024234752A1 (en) * | 2023-05-15 | 2024-11-21 | 上海正泰智能科技有限公司 | Circuit breaker operating mechanism and circuit breaker |
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| CN1805095A (en) * | 2006-01-19 | 2006-07-19 | 上海电器科学研究所（集团）有限公司 | Close indication structure for breaker actuating mechanism |
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