CN217691034U

CN217691034U - Auxiliary alarm contact structure of molded case circuit breaker and molded case circuit breaker

Info

Publication number: CN217691034U
Application number: CN202221669141.9U
Authority: CN
Inventors: 饶英丰; 蔡冰洁; 刘炳斌; 卓江海
Original assignee: Xiamen Hongfa Electrical Safety and Controls Co Ltd
Current assignee: Xiamen Hongfa Electrical Safety and Controls Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-28
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a moulded case circuit breaker's supplementary warning contact structure, including the fixed bolster, a pendulum rod, an elasticity resets, an supplementary micro-gap switch and an warning micro-gap switch, supplementary micro-gap switch and warning micro-gap switch install the both sides at the fixed bolster side by side, the pendulum rod rotates to be connected at the fixed bolster, the pendulum rod is located supplementary micro-gap switch and warning micro-gap switch's below, the direction of inserting is the upper and lower direction of fixed bolster, supplementary micro-gap switch and warning micro-gap switch's array orientation is the left and right sides orientation of fixed bolster, then the upper and lower direction is perpendicular mutually with left and right sides orientation, and the plane that its constitutes is parallel mutually with the rotation plane of pendulum rod, the pendulum rod includes the drive division, auxiliary control portion and alarm control portion, rotate and then drive the pendulum rod rotation through the control drive portion, thereby the realization auxiliary control portion of alternative triggers auxiliary gap switch, or alarm control portion triggers alarm switch. The utility model discloses a part total number is less, and rationally distributed compactness.

Description

Auxiliary alarm contact structure of molded case circuit breaker and molded case circuit breaker

Technical Field

The utility model relates to an auxiliary alarm contact technical field, concretely relates to moulded case circuit breaker's auxiliary alarm contact structure and moulded case circuit breaker.

Background

The technical scheme includes that an auxiliary alarm contact structure matched with a conventional molded case circuit breaker comprises a micro switch group, an alarm swing rod, an auxiliary swing rod, two torsion springs and a fixed support, wherein the micro switch group comprises an alarm micro switch and an auxiliary micro switch, the alarm swing rod and one torsion spring form an alarm transmission unit for triggering and switching the alarm micro switch, the auxiliary swing rod and the other torsion spring form an auxiliary transmission unit for triggering and switching the auxiliary micro switch, the auxiliary transmission unit and the alarm transmission unit are respectively and independently arranged, the auxiliary alarm transmission unit cannot be combined to form an integrated structure so as to trigger and switch the alarm auxiliary micro switch and the auxiliary micro switch, the scheme results in that the total number of parts of the auxiliary alarm contact structure is large, the whole structure is complex, the auxiliary swing rod and the alarm swing rod can be in rotating fit with a circuit breaker rotating shaft, the arrangement direction of the alarm swing rod and the auxiliary swing rod on the fixed support must be perpendicular to the rotating plane of the circuit breaker rotating shaft, the arrangement direction of the alarm swing rod and the auxiliary micro switch on the fixed support must also be perpendicular to the rotating plane of the circuit breaker, and the auxiliary swing rod cannot occupy a large-size of the whole auxiliary assembly groove of the micro switch.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a moulded case circuit breaker's supplementary warning contact structure and moulded case circuit breaker to solve the technical problem that the aforesaid exists.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a moulded case circuit breaker's supplementary warning contact structure, be used for inserting to install in moulded case circuit breaker's annex inslot and circuit breaker pivot normal running fit, including the fixed bolster, at least one micro-gap switch group, a pendulum rod and an elastic reset piece, each micro-gap switch group includes an auxiliary micro-gap switch and an alarm micro-gap switch, auxiliary micro-gap switch and alarm micro-gap switch install the both sides on the upper portion of fixed bolster side by side, the pendulum rod middle part rotates the lower part of connecting at the fixed bolster, the pendulum rod is located the below of auxiliary micro-gap switch and alarm micro-gap switch, the definition direction of inserting is the upper and lower direction of fixed bolster, auxiliary micro-gap switch and alarm micro-gap switch's range orientation are the left and right directions of fixed bolster, then the upper and lower directions are perpendicular to each other, and the plane of its constitution is parallel to each other with the plane of rotation of pendulum rod, the both ends of elastic reset piece are connected with pendulum rod, the fixed bolster respectively, the lower part of pendulum rod is the drive division, it exposes outside the fixed bolster to be used for with circuit breaker pivot normal running fit, the upper portion of two support arms of pendulum rod is auxiliary control portion and alarm control portion respectively, it rotates and then drives the pendulum rod to drive the pendulum rod rotation, thereby the realization auxiliary control portion of the alternative, the micro-gap switch is triggered.

In one embodiment, an auxiliary contact is arranged at the bottom of the auxiliary microswitch, an alarm contact is arranged at the bottom of the alarm microswitch, and the swing rod is driven to rotate by controlling the rotation of the driving part, so that the auxiliary control part and the auxiliary contact are alternatively pressed to be matched to trigger the auxiliary microswitch or the alarm control part and the alarm contact are pressed to be matched to trigger the alarm microswitch.

In one embodiment, when the driving part is in an initial state, the elastic reset piece is in a natural state, and the swing rod is not contacted with the auxiliary contact and the alarm contact; when the driving part rotates clockwise to a first state, the elastic resetting piece is in a stretching state, and the alarm control part is in press fit with the alarm contact to trigger the alarm microswitch; when the driving part rotates anticlockwise to the second state, the elastic reset piece is in a stretching state, and the auxiliary control part is in press fit with the auxiliary contact to trigger the auxiliary microswitch.

In one embodiment, a hook part is formed on the upper part of the swing rod in the area between the auxiliary control part and the alarm control part, a through hole is formed in the hook part, one end of the elastic reset piece is connected to the fixed bracket between the auxiliary micro switch and the alarm micro switch, and the other end of the elastic reset piece penetrates through the through hole to be connected to the hook part.

In one embodiment, the micro switch sets are two micro switches arranged on the upper portion of the fixing support in parallel, the two corresponding auxiliary micro switches and the two corresponding alarm micro switches are respectively arranged on two sides of the upper portion of the fixing support in parallel, the arrangement direction of the two auxiliary micro switches or the two alarm micro switches is defined as the front-back direction of the fixing support, the front-back direction is perpendicular to the rotation plane of the swing rod, the auxiliary control portion of the swing rod synchronously triggers the two auxiliary micro switches arranged in parallel on the same side, and the alarm control portion of the swing rod synchronously triggers the two alarm micro switches arranged in parallel on the same side.

In one embodiment, the width directions of the auxiliary control part and the alarm control part are defined to be parallel to the front-back direction of the fixed support, the width of the auxiliary control part is larger than the distance between the auxiliary contacts of the two auxiliary micro switches which are parallel to each other on the same side, and the width of the alarm control part is larger than the distance between the alarm contacts of the two alarm micro switches which are parallel to each other on the same side.

In one embodiment, the driving portion includes a first contact rod and a second contact rod which are arranged at an included angle and are bifurcated, a groove is formed at the top of the rotating shaft of the circuit breaker, when the driving portion is in an initial state, the first contact rod or the second contact rod does not interfere with the first groove wall and the second groove wall, when the driving portion is in a first state, the first contact rod is abutted against and matched with the first groove wall, and when the driving portion is in a second state, the second contact rod is abutted against and matched with the second groove wall.

In one embodiment, the bottom of the second feeler lever is formed with an abutting inclined surface, the abutting inclined surface is corrugated, and when the driving part is in the second state, one end of the abutting inclined surface, which is far away from the first feeler lever, is abutted and matched with the second groove wall.

In one embodiment, the top surfaces of the alarm control part and the auxiliary control part are flat inclined surfaces inclining upwards towards the center direction of the swing rod, when the alarm control part is in press fit with the alarm contact to trigger the alarm microswitch, the flat inclined surfaces of the alarm control part are in a horizontal state, and when the auxiliary control part is in press fit with the auxiliary contact to trigger the auxiliary microswitch, the flat inclined surfaces of the auxiliary control part are in a horizontal state.

The utility model also provides a moulded case circuit breaker, including circuit breaker body and the aforesaid arbitrary supplementary warning contact structure, be provided with the accessory groove on the circuit breaker body, supplementary warning contact structure inserts to be installed at the accessory inslot with circuit breaker pivot normal running fit, supplementary micro-gap switch and warning micro-gap switch's array orientation is parallel to each other with the rotation plane of circuit breaker pivot.

The utility model discloses following beneficial effect has:

the utility model discloses a pendulum rod and extension spring have formed the supplementary warning drive unit of integration and can assist micro-gap switch and supplementary micro-gap switch to reporting to the police and trigger the switching, part total number is less, overall structure is simpler, and because supplementary micro-gap switch and the range direction of warning micro-gap switch are parallel to each other with the rotation plane of pendulum rod, supplementary micro-gap switch and warning micro-gap switch arrange along the left and right sides direction of fixed bolster promptly, consequently save half space in the fore-and-aft direction of fixed bolster, the overall arrangement is compacter reasonable, thereby guarantee that the fixed bolster can follow when the fore-and-aft direction of fixed bolster installs two sets of micro-gap switch group side by side can also continue to install on moulded case circuit breaker's annex groove, make full use of moulded case circuit breaker's annex groove's space.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention;

fig. 2 is a schematic diagram of a switching process of embodiment 1 of the present invention in a tripping state, a switching-off state, and a switching-on state of the circuit breaker;

fig. 3 is a perspective view of the auxiliary alarm contact structure of embodiment 1 of the present invention and a circuit breaker rotating shaft respectively engaged in a tripped state;

fig. 4 is a perspective view of the auxiliary alarm contact structure of embodiment 1 of the present invention and a circuit breaker rotating shaft respectively engaged in an open state;

fig. 5 is a perspective view of the auxiliary alarm contact structure of embodiment 1 of the present invention and a circuit breaker rotating shaft respectively engaged in a closing state;

fig. 6 is a front view of the swing link of embodiment 1 of the present invention;

fig. 7 is a perspective view of the swing link according to embodiment 1 of the present invention;

fig. 8 is a schematic structural view of embodiment 2 of the present invention;

fig. 9 is an assembly diagram of embodiment 3 of the present invention.

The attached drawings are marked as follows: the automatic alarm device comprises a fixed support 1, an auxiliary microswitch 2, an auxiliary contact 21, an alarm microswitch 3, an alarm contact 31, a swing rod 4, an auxiliary control part 41, an alarm control part 42, a driving part 43, a first contact rod 431, a second contact rod 432, an inclined plane 433, a hook part 44, a through hole 441, a pin joint hole 45, a tension spring 5, a circuit breaker rotating shaft 6, a groove 7, a first groove wall 71, a second groove wall 72, a circuit breaker body 8, an accessory groove 9 and an auxiliary alarm contact structure 10.

Detailed Description

To further illustrate the various embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

For convenience of description, define: in fig. 1, the x-axis direction is the left-right direction of the fixing bracket, the y-axis direction is the up-down direction of the fixing bracket, and the z-axis direction is the front-back direction of the fixing bracket.

Example 1

Referring to fig. 1-7, in order to provide an embodiment of the present invention, an auxiliary alarm contact structure of a molded case circuit breaker is provided, which is configured to be inserted into an accessory groove 9 of the molded case circuit breaker and to be rotatably engaged with a circuit breaker rotating shaft 6, and comprises a fixing bracket 1, a micro switch set, a swing link 4 and an elastic reset member, wherein the fixing bracket 1 is a hollow rectangular bracket, each micro switch set comprises an auxiliary micro switch 2 and an alarm micro switch 3, the auxiliary micro switch 2 and the alarm micro switch 3 are installed at two sides of an upper portion of the fixing bracket 1 side by side, a pivot hole 45 is provided at a middle portion of the swing link 4, the swing link 4 is rotatably connected to a lower portion of the fixing bracket 1 through the pivot hole 45 and rotates with the pivot hole 45 as a central point, the swing link 4 is located below the auxiliary micro switch 2 and the alarm micro switch 3, as shown in fig. 1, the X-axis direction is the left-right direction of the fixed bracket 1, the Y-axis direction is the up-down direction of the fixed bracket 1, the Z-axis direction is the front-back direction of the fixed bracket 1, the inserting direction is the up-down direction of the fixed bracket 1, the up-down direction, the front-back direction and the left-right direction are mutually perpendicular in pairs, a plane formed by the up-down direction and the left-right direction is mutually parallel to a rotating plane of the oscillating bar 4, the auxiliary micro switch 2 and the alarm micro switch 3 are arranged side by side along the left-right direction of the fixed bracket 1, namely the arrangement direction of the auxiliary micro switch 2 and the alarm micro switch 3 is mutually parallel to the rotating plane of the oscillating bar 4, the layout mode is more compact and reasonable, a half of space is saved in the front-back direction of the fixed bracket 1, the elastic reset piece is a tension spring 5, two ends of the tension spring 5 are respectively connected with the oscillating bar 4 and the fixed bracket 1, the tension spring 5 is used for providing the elastic force for resetting of the oscillating bar 4, certainly, under other circumstances, the elastic resetting piece may also be an elastic sheet, as long as the swing rod 4 can be elastically reset, the lower part of the swing rod 4 is a driving part 43, which is exposed outside the fixed bracket 1 and used for being rotationally matched with the rotating shaft 6 of the circuit breaker, the upper parts of the two support arms of the swing rod 4 are respectively an auxiliary control part 41 and an alarm control part 42, and the swing rod 4 is driven to rotate by controlling the rotation of the driving part 43, so that the auxiliary control part 41 can trigger the auxiliary microswitch 2 or the alarm control part 42 can trigger the alarm microswitch 3.

Therefore, the utility model discloses a pendulum rod 4 and extension spring 5 have formed the supplementary alarm transmission unit of integration and can assist micro-gap switch and supplementary micro-gap switch 2 to the warning and trigger the switching, this technical scheme makes the utility model discloses a part total number is less, overall structure is simpler, and because supplementary micro-gap switch 2 sets up side by side with the left and right sides orientation of warning micro-gap switch 3 along fixed bolster 1, consequently compare in the scheme that warning micro-gap switch 3 among the prior art set up side by side with supplementary micro-gap switch 2 along the fore-and-aft direction of fixed bolster 1, this scheme can be in the fore-and-aft direction of fixed bolster 1 save half space, the overall arrangement is reasonable compacter, thereby make when outside many places have needs to gather switching signal, and when the independent signal needs the signal feedback of telecommunication, can also continue to install on moulded case circuit breaker's annex groove 9 when fixed bolster 1 can install two sets of micro-gap switch group side by side, make full use of moulded case circuit breaker's annex groove 9 space.

In this embodiment, auxiliary contact 21 is provided with to auxiliary micro-gap switch 2 bottom, alarm micro-gap switch 3 bottom is provided with alarm contact 31, rotate and then drive pendulum rod 4 through control drive portion 43 and rotate, thereby the realization auxiliary control portion 41 of alternative presses down the cooperation with auxiliary contact 21 in order to trigger auxiliary micro-gap switch 2, or alarm control portion 42 presses down the cooperation with alarm contact 31 in order to trigger alarm micro-gap switch 3, this setting makes pendulum rod 4 have bigger activity space, rotation range is bigger, it is better to trigger the effect. Of course, the alarm contact 31 and the auxiliary contact 21 may be located on the side walls of the two opposite sides of the alarm microswitch 3 and the auxiliary microswitch 2, and only by the arrangement, the movement space of the swing rod 4 is small, the rotation range is limited, and the triggering effect is affected.

Referring to fig. 2-5, in the present embodiment, when the driving portion 43 is in the initial state, the elastic restoring element is in the natural state, the swing link 4 is not in contact with the auxiliary contact 21 and the alarm contact 31, and at this time, the external circuit breaker is correspondingly in the open state (as shown in fig. 4); when the circuit breaker rotating shaft 6 rotates anticlockwise to drive the swing rod 4 to rotate clockwise, the driving part 43 rotates clockwise to a first state, the elastic reset piece is in a stretching state, the alarm control part 42 is in press fit with the alarm contact 31 to trigger the alarm microswitch 3, and at the moment, the external circuit breaker is correspondingly in a tripping state (as shown in fig. 3); when the rotating shaft 6 of the circuit breaker rotates clockwise to drive the swing rod 4 to rotate anticlockwise, and the driving part 43 rotates anticlockwise to a second state, the elastic resetting piece is in a stretching state, the auxiliary control part 41 is in press fit with the auxiliary contact 21 to trigger the auxiliary microswitch 2, and at the moment, the external circuit breaker is correspondingly in a closing state (as shown in fig. 5); when the breaker returns to the opening state, the tension spring 5 contracts and resets, and simultaneously drives the swing rod 4 to reset, so that the swing rod 4 is not contacted with the auxiliary contact 21 and the alarm contact 31 (as shown in fig. 4).

In this embodiment, the swing rod 4 rotates with the pivot hole 45 as a central point, and the auxiliary control portion 41 and the alarm control portion 42 are respectively located at the left and right sides of the central point, so a hook portion 44 is formed in an area between the auxiliary control portion 41 and the alarm control portion 42 at the upper portion of the swing rod 4, a through hole 441 is formed in the hook portion 44, one end of the tension spring 5 is connected to the fixing bracket 1 between the auxiliary micro switch 2 and the alarm micro switch 3, and the other end of the tension spring passes through the through hole 441 to be connected to the hook portion 44.

In this embodiment, the driving portion 43 includes a first contact rod 431 and a second contact rod 432 that are disposed at an included angle and are bifurcated, a groove 7 is formed at the top of the rotating shaft 6 of the circuit breaker, when the driving portion 43 is in an initial state, the first contact rod 431 or the second contact rod 432 does not interfere with the first groove wall 71 and the second groove wall 72, when the driving portion 43 is in a first state, the second contact rod 432 abuts against and cooperates with the second groove wall 72, when the driving portion 43 is in a second state, the first contact rod 431 abuts against and cooperates with the first groove wall 71, the driving portion 43 and the rotating shaft 6 of the circuit breaker are more stably matched in transmission process due to the arrangement, and further, the triggering and switching processes of the swing rod 4 to the auxiliary micro switch 2 and the alarm micro switch 3 are more smooth and stable.

In this embodiment, the bottom of the second feeler lever 432 is formed with an abutting inclined surface 433, the abutting inclined surface 433 is corrugated, when the driving portion 43 is in the first state, one end of the abutting inclined surface 433 away from the first feeler lever 431 abuts against and is matched with the second groove wall 72, the friction force when the abutting inclined surface 433 abuts against the second groove wall 72 of the groove 7 is increased by the arrangement, and the tripping stability is further improved.

In this embodiment, the top surfaces of the alarm control portion 42 and the auxiliary control portion 41 are flat inclined surfaces inclined upward toward the center of the swing rod 4, when the alarm control portion 42 is press-fitted with the alarm contact 31 to trigger the alarm microswitch 3, the flat inclined surfaces of the alarm control portion 42 are in a horizontal state, so as to ensure the stability and reliability of the triggering action of the alarm microswitch 3, and when the auxiliary control portion 41 is press-fitted with the auxiliary contact 21 to trigger the auxiliary microswitch 2, the flat inclined surfaces of the auxiliary control portion 41 are in a horizontal state, so as to ensure the stability and reliability of the triggering action of the auxiliary microswitch 2.

Example 2

For the sake of brevity, this embodiment mainly describes portions different from embodiment 1:

referring to fig. 8 shown, the utility model provides a moulded case circuit breaker's supplementary warning contact structure still, micro-gap switch group is for setting up two on fixed bolster 1 upper portion side by side along fixed frame's fore-and-aft direction, two supplementary micro-gap switch 2 or two warning micro-gap switch 3 that correspond also are for the range along fixed bolster 1's fore-and-aft direction, and two supplementary micro-gap switch 2, two warning micro-gap switch 3 set up the both sides on fixed bolster 1 upper portion side by side respectively, the fore-and-aft direction is perpendicular with pendulum rod 4's rotation plane, pendulum rod 4's supplementary control portion 41 synchronous trigger homonymy two supplementary micro-gap switch 2 that parallel, pendulum rod 4's alarm control portion 42 synchronous trigger homonymy two warning micro-gap switch 3 that parallel, this setting makes two micro-gap switch groups can be controlled to a pendulum rod 4, need not to increase pendulum rod 4's quantity, the cost is lower, the structure is simpler, it is littleer to occupy the volume, and can make full use fixed bolster 1 in the ascending space in fore-and-aft direction, the compactness is reasonable in overall arrangement.

In this embodiment, the width directions of the auxiliary control part 41 and the alarm control part 42 are defined to be parallel to the front-back direction of the fixed bracket 1, the width of the auxiliary control part 41 is greater than the distance between the auxiliary contacts 21 of the two auxiliary microswitches 2 arranged in parallel on the same side, the width of the alarm control part 42 is greater than the distance between the alarm contacts 31 of the two alarm microswitches 3 arranged in parallel on the same side, so as to ensure that the auxiliary control part 41 of the swing rod 4 triggers the two auxiliary microswitches 2 on the same side more stably and synchronously, the width of the alarm control part 42 is greater than the distance between the alarm contacts 31 of the two alarm microswitches 3, so as to ensure that the alarm control part 42 of the swing rod 4 triggers the two alarm microswitches 3 on the same side more stably and synchronously.

Example 3

Referring to and showing in figure 9, the utility model also provides a moulded case circuit breaker, including circuit breaker body 8 and above-mentioned embodiment 2 supplementary warning contact structure 10, be provided with accessory groove 9 on the circuit breaker body, supplementary warning contact structure 10 inserts to be installed in accessory groove 9 with 6 normal running fit of circuit breaker pivot (because the inner structure of circuit breaker body is prior art, no too much repeated here), the assembly is accomplished the back, the array orientation of supplementary micro-gap switch 2 and warning micro-gap switch 3 is parallel to each other with the rotation plane of circuit breaker pivot 6, consequently, make an accessory groove 9 just can hold two micro-gap switch groups, four micro-gap switches of constituteing by two warning micro-gap switch 3 and two supplementary micro-gap switch 2 can be held in an accessory groove 9 promptly, make full rational use of the space in accessory groove 9.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a moulded case circuit breaker's supplementary warning contact structure for insert install at moulded case circuit breaker's annex inslot and circuit breaker pivot normal running fit, its characterized in that: the automatic reset device comprises a fixed support, at least one micro switch group, a swing rod and an elastic reset piece, wherein each micro switch group comprises an auxiliary micro switch and an alarm micro switch, the auxiliary micro switch and the alarm micro switch are arranged on two sides of the upper part of the fixed support side by side, the middle part of the swing rod is rotatably connected to the lower part of the fixed support, the swing rod is positioned below the auxiliary micro switch and the alarm micro switch, the insertion direction is defined as the up-down direction of the fixed support, the arrangement direction of the auxiliary micro switch and the alarm micro switch is the left-right direction of the fixed support, the up-down direction is mutually vertical to the left-right direction, the plane formed by the swing rod is mutually parallel to the rotation plane of the swing rod, two ends of the elastic reset piece are respectively connected with the swing rod and the fixed support, the lower part of the swing rod is a driving part which is exposed outside the fixed support and is used for being in rotating fit with a rotating shaft of a circuit breaker, the upper parts of two support arms of the swing rod are respectively an auxiliary control part and an alarm control part, and then drive the swing rod to rotate through controlling the driving part, so that the auxiliary control part triggers the auxiliary micro switch or the alarm micro switch.

2. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 1, wherein: the bottom of the auxiliary microswitch is provided with an auxiliary contact, the bottom of the alarm microswitch is provided with an alarm contact, and the swing rod is driven to rotate by controlling the rotation of the driving part, so that the auxiliary control part and the auxiliary contact are in press fit to trigger the auxiliary microswitch or the alarm control part and the alarm contact are in press fit to trigger the alarm microswitch.

3. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 2, wherein: when the driving part is in an initial state, the elastic reset piece is in a natural state, and the swing rod is not contacted with the auxiliary contact and the alarm contact; when the driving part rotates clockwise to a first state, the elastic reset piece is in a stretching state, and the alarm control part is in press fit with the alarm contact to trigger the alarm microswitch; when the driving part rotates anticlockwise to a second state, the elastic reset piece is in a stretching state, and the auxiliary control part is in press fit with the auxiliary contact to trigger the auxiliary microswitch.

4. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 1, wherein: the upper part of the swing rod is provided with a hook part in the area between the auxiliary control part and the alarm control part, a through hole is arranged on the hook part, one end of the elastic reset piece is connected to the fixed bracket between the auxiliary microswitch and the alarm microswitch, and the other end of the elastic reset piece passes through the through hole and is connected to the hook part.

5. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 1, wherein: the micro switch groups are two micro switches which are arranged on the upper portion of the fixing support in parallel, the two corresponding auxiliary micro switches and the two corresponding alarm micro switches are respectively arranged on two sides of the upper portion of the fixing support in parallel, the arrangement direction of the two auxiliary micro switches or the two alarm micro switches is defined as the front-back direction of the fixing support, the front-back direction is perpendicular to the rotation plane of the swing rod, the auxiliary control portion of the swing rod synchronously triggers the two auxiliary micro switches which are arranged on the same side in parallel, and the alarm control portion of the swing rod synchronously triggers the two alarm micro switches which are arranged on the same side in parallel.

6. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 5, wherein: the width directions of the auxiliary control part and the alarm control part are defined to be parallel to the front and back directions of the fixed support, the width of the auxiliary control part is larger than the distance between the auxiliary contacts of the two auxiliary micro switches which are parallel at the same side, and the width of the alarm control part is larger than the distance between the alarm contacts of the two alarm micro switches which are parallel at the same side.

7. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 1, wherein: the drive division is including being the first feeler lever and the second feeler lever that contained angle and branching set up each other, and the top of circuit breaker pivot is formed with the recess, and drive division when initial condition, first feeler lever or second feeler lever and first cell wall, second cell wall mutually noninterfere, and drive division is when the first condition, and first feeler lever supports with first cell wall and leans on the cooperation, and drive division is when the second condition, and the second feeler lever supports with the second cell wall and leans on the cooperation.

8. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 7, wherein: the bottom of the second feeler lever is provided with a leaning inclined plane which is corrugated, and when the driving part is in a second state, one end of the leaning inclined plane far away from the first feeler lever is leaned against the second groove wall to be matched with the first feeler lever.

9. The auxiliary alarm contact structure of the molded case circuit breaker according to claim 7, wherein: the top surfaces of the alarm control part and the auxiliary control part are flat inclined surfaces inclining upwards towards the center direction of the swing rod, when the alarm control part is in press fit with the alarm contact to trigger the alarm microswitch, the flat inclined surfaces of the alarm control part are in a horizontal state, and when the auxiliary control part is in press fit with the auxiliary contact to trigger the auxiliary microswitch, the flat inclined surfaces of the auxiliary control part are in a horizontal state.

10. A molded case circuit breaker, characterized in that: the auxiliary alarm contact structure comprises a breaker body and the auxiliary alarm contact structure as claimed in any one of claims 1 to 9, wherein an accessory groove is formed in the breaker body, the auxiliary alarm contact structure is inserted into the accessory groove and is in rotating fit with a rotating shaft of the breaker, and the arrangement directions of the auxiliary micro switch and the alarm micro switch are parallel to the rotating plane of the rotating shaft of the breaker.