CN210349736U

CN210349736U - Plug-in type miniature circuit breaker

Info

Publication number: CN210349736U
Application number: CN201920918639.6U
Authority: CN
Inventors: 卢科军; 顾翔翼
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-04-17
Anticipated expiration: 2029-06-18

Abstract

The utility model relates to the field of low-voltage electrical appliances, in particular to an insertion type miniature circuit breaker, wherein an operating mechanism of the small-sized circuit breaker comprises an operating part, one end of the operating part is inserted in a shell, and the other end of the operating part protrudes out of the shell; the shell comprises a switching-on and switching-off indication window arranged on the shell; the switching-on and switching-off indicating piece is arranged in the shell and used for indicating the switching-on and switching-off states of the plug-in type miniature circuit breaker, and the switching-on and switching-off indicating piece is arranged on one side of the operating piece and is in linkage fit with the operating piece; pressing the operating piece to enable the plug-in type miniature circuit breaker to enter a closing state through the operating mechanism, enabling the opening and closing indicating piece to act, and indicating the closing state of the plug-in type miniature circuit breaker through the opening and closing indicating window; the utility model discloses a plug-in miniature circuit breaker, its divide-shut brake indicator sets up in operating parts one side, with the cooperation of the divide-shut brake instruction window on the casing, can be directly perceived clear and definite instruction circuit breaker's divide-shut brake state.

Description

Plug-in type miniature circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to bayonet miniature circuit breaker.

Background

The circuit breaker can effectively improve the safety of the electric appliance. In order to meet the installation requirements of different electrical equipment, the structures of the plug-in type miniature circuit breakers are various, and along with the miniaturization development trend of the electrical equipment, the overall structure and the operation mode of the adaptive plug-in type miniature circuit breaker need to be further upgraded. The existing plug-in type small circuit breaker mostly has the following defects:

1. the switching-on and switching-off indicating parts of the existing plug-in miniature circuit breaker are mostly arranged inside operating parts, and when the circuit breaker is switched on and switched off, the switching-on and switching-off conditions inside the circuit breaker can not be observed in time due to the fact that limbs shield the circuit breaker.

2. The function that current plug-in miniature circuit breaker only instructed the operating condition of circuit breaker, can't instruct whether to install in place when the installation circuit breaker, and the circuit breaker that does not install in place is difficult to guarantee stability at the during operation, very easily deviates from the mounted position, influences the continuation and the stability of circuit.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a bayonet miniature circuit breaker, its divide-shut brake indicator sets up in operating parts one side, with the cooperation of the divide-shut brake indication window on the casing, can be directly perceived clear and definite instruction circuit breaker's divide-shut brake state.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a plug-in type miniature circuit breaker comprises a shell 6, an operating mechanism and a contact system, wherein the operating mechanism comprises an operating part 1 of which one end is inserted in the shell 6 and the other end protrudes out of the shell 6, and the contact system comprises a movable contact 900c of which one end is connected with the operating mechanism and a fixed contact 910c matched with the movable contact 900c for use;

the shell 6 comprises a switching-on and switching-off indication window 62a arranged on the shell; the plug-in type miniature circuit breaker also comprises a switching-on and switching-off indicating piece 2 which is arranged in the shell 6 and used for indicating the switching-on and switching-off states of the plug-in type miniature circuit breaker, wherein the switching-on and switching-off indicating piece 2 is arranged on one side of the operating piece 1 and is in linkage fit with the operating piece; pressing the operating element 1 causes the plug-in type small circuit breaker to enter a closing state through the operating mechanism, and causes the opening and closing indicating element 2 to act, and indicates the closing state of the plug-in type small circuit breaker through the opening and closing indicating window 62 a.

Preferably, the switching-on/off indicator 2 comprises a switching-off indicating surface 22 and a switching-on indicating surface 23 arranged thereon;

when the plug-in type miniature circuit breaker is in an opening state, the opening indicating surface 22 is visible through the opening and closing indicating window 62a, the plug-in type miniature circuit breaker enters a closing state from the opening state by pressing the operating part 1, and the closing indicating surface 23 is visible through the opening and closing indicating window 62a by the action of the opening and closing indicating part 2.

Preferably, the switching indicator 2 is pivotally disposed on the housing 6, the switching indicator 2 rotates to make the closing indication surface 23 visible through the switching indication window 62a by pressing the operating element 1 to make the plug-in miniature circuit breaker enter the closing state from the switching-off state.

Preferably, when the plug-in miniature circuit breaker is in a closing state and the plug-in miniature circuit breaker is in an opening state by pulling the operating element 1 through the operating mechanism, the operating element 1 drives the opening and closing indicating element 2 to rotate, so that the opening and closing indicating surface 22 is visible through the opening and closing indicating window 62 a;

or when the plug-in type miniature circuit breaker is in a closing state, the plug-in type miniature circuit breaker enters a breaking state by pressing the operating part 1 through the operating mechanism, meanwhile, the operating part 1 bounces, and the operating part 1 drives the opening and closing indicating part 2 to rotate, so that the opening and closing indicating surface 22 is visible through the opening and closing indicating window 62.

Preferably, the opening and closing indicating member 2 comprises a first indicating member limiting platform 21a arranged on one side of the opening and closing indicating member, the operating member 1 comprises a first operating member limiting boss 11a arranged on one side of the operating member, and the first indicating member limiting platform 21a is in limiting fit with the first operating member limiting boss 11 a; and the operating part 1 is pressed to enable the plug-in type miniature circuit breaker to enter a closing state from a switching-off state, the first operating part limiting boss 11a moves to one side of the first indicating part limiting platform 21a to remove the limiting fit between the first indicating part limiting platform 21a, and the switching-off and switching-on indicating part 2 rotates to enable the closing indicating surface 23 to be visible through the switching-off and switching-on indicating window 62 a.

Preferably, the switching-on/off indicator 2 is of a cylindrical structure and comprises a first indicator limiting platform 21a arranged on one side of the switching-on/off indicator, a switching-off indicating surface 22 and a switching-on indicating surface 23 arranged on the other side of the switching-on/off indicator 2, the middle part of the switching-on/off indicator 2 is pivotally arranged on the shell 6, and the first indicator limiting platform 21a comprises a first limiting plane 210a arranged on one side of the first indicator limiting platform;

when the plug-in type miniature circuit breaker enters a switching-on state from a switching-off state, the first operation element limiting boss 11a moves from one end of the first limiting plane 210a to the other end of the first limiting plane 210a until the first operation element limiting boss 11a is separated from the first limiting plane 210a, and the limiting matching between the first operation element limiting boss 11a and the first indicating element limiting platform 21a is released.

Preferably, the opening and closing indicating member 2 further comprises an indicating member shaft hole 20 arranged in the middle of the opening and closing indicating member 2, and the first mounting shaft 63 of the housing 6 is sleeved with the opening and closing indicating member 2 through the indicating member shaft hole 20; the switching-off indicating surface 22 and the switching-on indicating surface 23 are both arc-shaped surfaces, and one end of the switching-off indicating surface 22 is connected with one end of the switching-on indicating surface 23; plug-in miniature circuit breaker still includes indicator

torsional spring

3, and 3 covers of indicator torsional spring are established on first installation axle 63, and one end links to each other with divide-shut brake indicator 2, and the other end links to each other with casing 6, provides pivoted power for divide-shut brake indicator 2.

Preferably, the switching-closing indication member 2 comprises a first indication member driven boss 21b arranged on one side of the switching-closing indication member, the operation member 1 comprises a first operation member driving boss 11b arranged on one side of the switching-closing indication member, and the first operation member driving boss 11b is in driving fit with the first indication member driven boss 21 b;

the operation piece 1 is pressed to enable the plug-in type miniature circuit breaker to enter a closing state from a switching-off state, the first operation piece driving boss 11b drives the switching-on/off indicating piece 2 to rotate through the first indicating piece driven boss 21b, and the closing indicating surface 23 is made to be visible through the switching-on/off indicating window 62 a.

Preferably, the switching-off and switching-on indicating member 2 is of a cylindrical structure and comprises a first indicating member driven boss 21b arranged on one side of the switching-off and switching-on indicating member 2, a switching-off indicating surface 22 and a switching-on indicating surface 23 arranged on the other side of the switching-off and switching-on indicating member 2, and an indicating member shaft hole 20 arranged in the middle of the switching-off and switching-on indicating member 2, wherein the switching-off and switching-on indicating member 2 is sleeved on the first mounting shaft 63 of the shell 6 through the indicating member shaft hole 20; the switching-off indicating surface 22 and the switching-on indicating surface 23 are both arc-shaped surfaces, one end of the switching-off indicating surface 22 is connected with one end of the switching-on indicating surface 23, and the first indicating piece driven boss 21b is positioned between the other end of the switching-off indicating surface 22 and the other end of the switching-on indicating surface 23; plug-in miniature circuit breaker still includes indicator torsional spring 3, and indicator torsional spring 3 covers is established on first installation axle 63, and one end links to each other with divide-shut brake indicator 2, and the other end links to each other with casing 6.

Preferably, the opening and closing indicating member 2 is a cylindrical structure and comprises a plurality of circumferentially distributed indicating member tooth teeth arranged on the side surface of the ring of the opening and closing indicating member 2, the operating member 1 comprises a plurality of operating member tooth teeth arranged side by side on one side of the operating member, and the indicating member tooth teeth and the operating member tooth teeth are meshed with each other;

the operating part 1 is pressed to enable the plug-in type small circuit breaker to enter a closing state from a switching-off state, the switching-on and switching-off indicating part 2 is driven to rotate through the cooperation of the operating part tooth form and the indicating part tooth form, and the closing indicating surface 23 is made to be visible through the switching-on and switching-off indicating window 62 a.

Preferably, the switching-on and switching-off indicator 2 is of a cylindrical structure and comprises three indicator teeth arranged on one side of the switching-on and switching-off indicator, a switching-off indicating surface 22 and a switching-on indicating surface 23 arranged on the other side of the switching-on and switching-off indicator 2, and an indicator shaft hole 20 arranged in the middle of the switching-on and switching-off indicator 2; the three indicating piece rodents are respectively a first indicating piece rodent 21c1, a second indicating piece rodent 21c2 and a third indicating piece rodent 21c3 which are sequentially arranged, the first indicating piece rodent 21c1 is close to one end of the opening indicating surface 22, the other end of the opening indicating surface 22 is connected with one end of the closing indicating surface 23, and the other end of the closing indicating surface 23 is close to the third indicating piece rodent 21c 3; the switching-on and switching-off indicating member 2 is sleeved on the first mounting shaft 63 of the shell 6 through the indicating member shaft hole 20.

Preferably, the operating member 1 comprises three operating member rodents arranged on one side thereof, a first operating member rodent 11c1, a second operating member rodent 11c2 and a third operating member rodent 11c3, which are arranged in sequence;

when the plug-in type small circuit breaker is in the opening state, the second indicator rodent 21c2 is positioned between the second operating member rodent 11c2 and the third operating member rodent 11c3, and the third operating member rodent 11c3 is positioned between the second indicator rodent 21c2 and the third indicator rodent 21c 3; the first indicator rodent 21c1 is located between the first operating member rodent 11c1 and the second operating member rodent 11c2 when the plug-in type small circuit breaker is in a closed state.

Preferably, the opening and closing indicating member 2 is rotatably disposed at an inner corner of the housing 6, a chamfer structure is disposed at a vertex angle of the housing 6 corresponding to the inner corner, and an opening and closing indicating window 62a is disposed on the chamfer structure.

The utility model discloses a plug-in miniature circuit breaker, its divide-shut brake indicator cooperates with the operating parts linkage, makes the action of divide-shut brake indicator directly receive the control of operating parts, can accurate instruction plug-in miniature circuit breaker's divide-shut brake state, improves the power consumption security; the switching-on and switching-off indicating piece is arranged on one side of the operating piece and is matched with the switching-on and switching-off indicating window of the shell to indicate the switching-on and switching-off state of the plug-in miniature circuit breaker, so that the switching-on and switching-off indicating piece is more visual and clear. In addition, divide-shut brake indicator pivot setting is on the casing, is favorable to reducing the fitting space and the action space of divide-shut brake indicator, practices thrift the inner space of circuit breaker, is favorable to bayonet miniature circuit breaker's miniaturization.

Drawings

Fig. 1 is a schematic view of a projection structure of a plug-in miniature circuit breaker of the present invention, showing a structure of a first embodiment in which a switching-off and switching-on indicator is in linkage fit with an operating member;

fig. 2 is an enlarged schematic structural view of a portion a of fig. 1 according to the present invention, at least showing a matching relationship between the operating member and the opening/closing indicator in the opening state of the circuit breaker;

fig. 3 is a schematic perspective view of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the second embodiment in which the switching-on/off indicator is in linkage fit with the operating part;

fig. 4 is an enlarged schematic structural view of a portion B of fig. 3 according to the present invention, at least showing a matching relationship between the operation member and the opening/closing indicator in the opening state of the circuit breaker;

fig. 5 is a schematic projection structure diagram of the first embodiment of the switching-on/off indicator and the operating element in linkage fit, showing the fit relationship between the operating element and the switching-on/off indicator in the closing state of the circuit breaker;

fig. 6 is a schematic structural diagram of the first embodiment of the opening and closing indicator of the present invention, which at least shows the structure of the first indicator limiting platform;

fig. 7 is a schematic structural diagram of the first embodiment of the opening and closing indicator of the present invention, which at least shows the structures of the opening indicating surface and the closing indicating surface;

fig. 8 is a schematic perspective view of the plug-in miniature circuit breaker of the present invention, showing the structure of the second embodiment in which the opening and closing indicator is in linkage with the operating part, the circuit breaker being in an open state;

fig. 9 is an enlarged schematic structural view of a portion C of fig. 8 according to the present invention, at least showing a mating relationship between the opening/closing indicator and the operating element in the opening state of the circuit breaker;

fig. 10 is a schematic structural view of the second embodiment of the present invention, in which the operating member and the opening/closing indicating member are in linkage fit with each other in the opening/closing state of the circuit breaker;

fig. 11 is a schematic perspective view of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the second embodiment in which the switching-off and switching-on indicator is in linkage with the operating element, the circuit breaker being in a switching-on state;

fig. 12 is an enlarged schematic structural view of a portion D of fig. 11 according to the present invention, at least showing a mating relationship between the opening/closing indicator and the operating element in a closing state of the circuit breaker;

fig. 13 is a schematic perspective view of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the third embodiment in which the opening and closing indicating member is in linkage with the operating member, the circuit breaker being in an opening state;

fig. 14 is an enlarged schematic structural view of a portion E of fig. 13 according to the present invention, at least showing a mating relationship between the opening/closing indicator and the operating element in the opening state of the circuit breaker;

fig. 15 is a schematic structural view of a third embodiment of the present invention, in which the operating member and the opening/closing indicating member are in linkage fit with each other in the opening/closing state of the circuit breaker;

fig. 16 is a schematic perspective view of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the third embodiment in which the switching-off and switching-on indicator is in linkage with the operating element, the circuit breaker being in a switching-on state;

fig. 17 is an enlarged schematic structural view of a portion F of fig. 16, showing at least a fitting relationship between the opening/closing indicator and the operating element in a closing state of the circuit breaker;

fig. 18 is a schematic view of a projected structure of the plug-in type miniature circuit breaker of the present invention, showing at least the structure of the first embodiment of the in-place indicating mechanism, the circuit breaker is in an uninstalled in-place state;

fig. 19 is an enlarged schematic view of portion G of fig. 18 showing at least the structure of the first embodiment of the in-position indicating mechanism in accordance with the present invention;

fig. 20 is a schematic view of a projection structure of the plug-in type miniature circuit breaker of the present invention, showing at least the structure of the first embodiment of the in-place indicating mechanism, the circuit breaker being in an in-place mounted state;

fig. 21 is an enlarged schematic view of portion H of fig. 20 of the present invention, showing at least the structure of the first embodiment of the in-position indicating mechanism;

fig. 22 is a schematic view of the in-place linkage member and the operating mechanism of the in-place indicating mechanism according to the first embodiment of the present invention when the circuit breaker is not in the in-place mounted state;

fig. 23 is a schematic view of the in-place linkage member and the operating mechanism of the in-place indicating mechanism according to the first embodiment of the present invention when the circuit breaker is in the in-place state;

fig. 24 is a schematic view of the position relationship between the opening and closing indicating member and the in-place indicating member of the present invention;

fig. 25 is a schematic view of a projected structure of a plug-in type miniature circuit breaker of the present invention, showing at least the structure of a second embodiment of the in-position indicating mechanism;

fig. 26 is a schematic structural view of a second embodiment of the in-place indicating mechanism of the present invention, at least showing the operating member and the in-place indicating member in a fitted relationship when the circuit breaker is not in place;

fig. 27 is a schematic structural view of a second embodiment of the in-place indicating mechanism of the present invention, at least showing the matching relationship between the operating member and the in-place indicating member when the circuit breaker is in the in-place mounted state;

fig. 28 is a schematic structural view of a third embodiment of the in-place indicating mechanism of the present invention;

fig. 29 is a schematic structural diagram of the circuit breaker locking member of the in-place indication mechanism of the present invention, at least showing the matching relationship between the operating member and the circuit breaker locking member when the circuit breaker is in the in-place state.

Detailed Description

The following description will further describe embodiments of the plug-in type miniature circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 29. The plug-in type miniature circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, 3, 8, 11, 13, 16, 19, 20, 25, the present invention provides a small-sized plug-in circuit breaker, which includes a housing 6, an operating mechanism and a contact system, wherein the operating mechanism includes an operating member 1 with one end inserted into the housing 6 and the other end protruding outside the housing 6, and the contact system includes a movable contact 900c with one end connected to the operating mechanism and a fixed contact 910c used in cooperation with the movable contact 900 c.

Preferably, as shown in fig. 1 to 17, the housing 6 includes an opening and closing indication window 62a provided thereon; the plug-in type miniature circuit breaker also comprises a switching-on and switching-off indicating piece 2 which is arranged in the shell 6 and used for indicating the switching-on and switching-off states of the plug-in type miniature circuit breaker, wherein the switching-on and switching-off indicating piece 2 is arranged on one side of the operating piece 1 and is in linkage fit with the operating piece; when the operating part 1 is pressed, the plug-in type miniature circuit breaker enters a closing state through the operating mechanism, the switching-on and switching-off indicating part 2 acts, and the switching-on state of the plug-in type miniature circuit breaker is indicated through the switching-on and switching-off indicating window 62 a. Further, as shown in fig. 1 to 17, the opening and closing indicator 2 includes an opening indicating surface 22 and a closing indicating surface 23 disposed thereon; when the plug-in type miniature circuit breaker is in an opening state, the opening indicating surface 22 is visible through the opening and closing indicating window 62a, the plug-in type miniature circuit breaker enters a closing state from the opening state by pressing the operating part 1, and the closing indicating surface 23 is visible through the opening and closing indicating window 62a by the action of the opening and closing indicating part 2. Further, as shown in fig. 1 to 17, the switching indicator 2 is pivotally disposed on the housing 6, the switching indicator 2 rotates to make the closing indication surface 23 visible through the switching indication window 62a by pressing the operating element 1 to make the plug-in miniature circuit breaker enter the closing state from the opening state. Further, as shown in fig. 1-17, when the plug-in miniature circuit breaker is in a closing state, pulling the operating element 1 to make the plug-in miniature circuit breaker enter a breaking state through the operating mechanism, and the operating element 1 drives the opening and closing indicating element 2 to rotate, so that the opening and closing indicating surface 22 is visible through the opening and closing indicating window 62 a; or, when the plug-in type miniature circuit breaker is in a closing state, the plug-in type miniature circuit breaker enters a switching-off state by pressing the operating part 1 through the operating mechanism, and simultaneously the operating part 1 bounces, and the operating part 1 drives the switching-off and switching-on indicating part 2 to rotate, so that the switching-off indicating surface 22 is visible through the switching-off and switching-on indicating window 62 a.

The utility model discloses a plug-in miniature circuit breaker, its divide-shut brake indicator 2 cooperates with operating parts 1 linkage, makes the action of divide-shut brake indicator 2 directly receive operating parts 1's control, can accurate instruction plug-in miniature circuit breaker's divide-shut brake state, improves the power consumption security; the opening and closing indicating part 2 is arranged on the shell 6 in a pivoting mode, so that the assembly space and the action space of the opening and closing indicating part 2 are reduced, the internal space of the circuit breaker is saved, and the miniaturization of the plug-in type miniature circuit breaker is facilitated; the opening and closing indicating window 62 of the shell 6 is used for indicating the opening and closing state of the plug-in miniature circuit breaker, and is more visual and clear.

Preferably, as shown in fig. 18-24, the housing 6 includes a position indicating window 62b and a projection 64 disposed thereon; the plug-in miniature circuit breaker further comprises a position indicating mechanism, wherein the position indicating mechanism comprises a driven bulge 51 and a position indicating end 4243 which are respectively arranged at the two ends of the position indicating mechanism, the driven bulge 51 protrudes out of the shell 6 through an extending opening 64, and the position indicating end 4243 is arranged opposite to the position indicating window 62 b; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the driven protrusion 51, so that the in-place indication end 4243 indicates the plug-in type miniature circuit breaker to be in-place through the in-place indication window 62 b. Further, as shown in fig. 18-24, the in-place indicating end 4243 comprises a warning surface 42 and an in-place indicating surface 43; when the plug-in type miniature circuit breaker is not installed and the plug-in type miniature circuit breaker is installed to a circuit breaker assembly position and is not installed in place, the warning surface 42 is visible through the in-place indication window 62b to indicate that the plug-in type miniature circuit breaker is in an uninstalled in-place state; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indication surface 43 is visible through the in-place indication window 62b, indicating that the plug-in type miniature circuit breaker is in the in-place installation state. Further, as shown in fig. 18 to 24, the in-position indicating mechanism comprises an in-position indicating member 4 and an in-position linkage member 5, wherein one end of the in-position indicating member 4 is provided with an in-position indicating end 4243, the other end of the in-position indicating member is in driving fit with one end of the in-position linkage member 5, and the other end of the in-position linkage member 5 is provided with a driven protrusion 51. Further, the in-place linkage member 5 further includes a circuit breaker locking protrusion 53 disposed on one side of the in-place driving protrusion 52, and the circuit breaker locking protrusion 53 is in limit fit with the operating mechanism to prevent the operating member 1 from moving in the closing direction of the circuit breaker (i.e., prevent the operating member 1 from moving into the housing 6); after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the driven protrusion 51, so that the in-place linkage part 5 rotates, and the limit matching of the locking protrusion 53 and the operating mechanism is released.

The utility model discloses a plug-in miniature circuit breaker, its indicating mechanism that targets in place can accurately indicate plug-in miniature circuit breaker whether be in the installation state of target in place, has improved the power consumption security, has guaranteed circuit breaker job stabilization nature; the in-place indication window 62b of the shell is used for indicating whether the plug-in type miniature circuit breaker is installed in place or not, so that the installation is more visual and clear; and the circuit breaker locking projection 53 of the in-place linkage piece 5 can prevent the operation piece 1 from moving towards the closing direction of the circuit breaker when the plug-in type miniature circuit breaker is not installed or is not installed in place, thereby further improving the electricity utilization safety.

Preferably, as shown in fig. 25-29, the housing 6 includes a position indicating window 62b and a projection 64 disposed thereon; the plug-in miniature circuit breaker further comprises a target-in indicating mechanism arranged in the shell 6, the target-in indicating mechanism comprises a target-in indicating piece 4, the middle part of the target-in indicating piece 4 is arranged on the shell 6 in a pivoting mode, the target-in indicating piece 4 comprises an indicating end 4cd and an indicating piece driven end 4a which are respectively arranged at the two ends of the target-in indicating piece, the indicating end 4cd is arranged opposite to the target-in indicating window 62b, and the indicating piece driven end 4a is arranged on the outer side of the shell 6 in a protruding mode through an extending opening 64; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the indicator driven end 4a, so that the indicator end 4cd indicates that the plug-in type miniature circuit breaker is in the installation in place state through the in-place indicator window 62 b. Further, as shown in fig. 25 to 29, the indicating end 4cd includes a warning side 4c and a in-position indicating side 4 d; when the plug-in type miniature circuit breaker is not installed and the plug-in type miniature circuit breaker is installed to the circuit breaker assembly and is not installed in place, the warning side surface 4c is visible through the in-place indication window 62b to indicate that the plug-in type miniature circuit breaker is in the state of not being installed in place; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indication side surface 4d is visible through the in-place indication window 62b, and indicates that the plug-in type miniature circuit breaker is in the in-place installation state. Further, as shown in fig. 25-29, the plug-in type miniature circuit breaker further includes a circuit breaker locking member 8 pivotally disposed at the housing 6 at the middle portion thereof, the circuit breaker locking member 8 includes a locking protrusion 81 and a locking member driven end 80 respectively disposed at both ends thereof, the locking protrusion 81 is in limit fit with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction (i.e., prevent the operating member 1 from moving into the housing 6); after the plug-in miniature circuit breaker is installed to a circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the locking piece driven end 80 to enable the circuit breaker locking piece 8 to rotate, the limiting matching of the locking boss 81 and the operating mechanism is released, and the movable contact 900c and the fixed contact 910c are closed through the operating mechanism by pressing the operating piece 1.

The utility model discloses a plug-in miniature circuit breaker, its indicating mechanism that targets in place include target in place indicator 4, target in place indicator 4 and the casing drive cooperation of circuit breaker assembly position, can accurately indicate plug-in miniature circuit breaker and install whether target in place, have improved the power consumption security, have guaranteed circuit breaker job stabilization nature, and target in place indicator 4 simple structure, the assembly of being convenient for, job stabilization; the circuit breaker locking piece 8 can prevent the operating part 1 from moving towards the closing direction of the circuit breaker when the plug-in type miniature circuit breaker is not installed and is not installed in place, and the power utilization safety is further improved.

The following is an embodiment of the plug-in miniature circuit breaker of the present invention.

As shown in fig. 1, 3, 8, 11, 13, 16, 19, 20, 25, the present invention provides a small-sized plug-in circuit breaker, which includes a housing 6, an operating mechanism and a contact system, wherein the operating mechanism includes an operating member 1 with one end inserted into the housing 6 and the other end protruding outside the housing 6, and the contact system includes a movable contact 900c with one end connected to the operating mechanism and a fixed contact 910c used in cooperation with the movable contact 900 c. Specific as the direction shown in fig. 3, the utility model discloses plug-in miniature circuit breaker, operating device and contact system all set up in casing 6, operating device sets up on casing 6 upper portion, contact system sets up in the operating device below, operating device's operating parts 1 is planted in casing 6 upper end, operating parts 1's upper end is outstanding at casing 6 upside, the lower extreme is planted in casing 6, contact system's moving contact 900c sets up in the operating device below and links to each other with it, static contact 910c sets up in moving contact 900 c's left side and uses rather than the cooperation.

It is to be noted that both the operating mechanism and the contact system can be realized by means of prior art and are not developed in detail here. Preferably, the operating mechanism includes an operating part 1, a first link 7, a transmission plate 100, a second link 200, a trip buckle 300, a lock catch 400 and a support plate, the lower end of the operating part 1 is connected with one end of the first link 7, the other end of the first link 7 is connected with the transmission plate 100, the transmission plate 100 is connected with the trip buckle 300 through the second link 200, the trip buckle 300 and the lock catch 400 are respectively rotatably arranged on the support plate, the trip buckle 300 is in lock catch fit with the lock catch 400, and the support plate is connected with the movable contact 900 c. Further, the utility model discloses a plug-in type miniature circuit breaker presses/draws operating part 1 accessible operating device and makes movable contact 900c and static contact 910c close (combined floodgate)/break off (separating brake), or presses operating part 1 accessible operating device and makes movable contact 900c and static contact 910c close/break off, when pressing operating part 1 and making movable contact 900c and static contact 910c break off through operating device, operating part 1 can bounce automatically (bounce to the outside direction of casing 6 promptly).

Of course, as shown in fig. 3, the utility model discloses a plug-in miniature circuit breaker can also include short-circuit protection device 600, overload protection device 500, explosion chamber 700, leading-out terminal 900 and inlet wire end 800, and leading-out terminal 900 sets up in operating parts 1 left side, and short-circuit protection device 600 and explosion chamber 700 set up in the operating device below, and explosion chamber 700 is located short-circuit protection device 600 left side, and overload protection device 500 sets up and is located explosion chamber 700 top in the operating device left side. Preferably, the short circuit protection device 600 is an electromagnetic release and is used in cooperation with the trip buckle 400, and the overload protection device 500 is a bimetallic strip and is used in cooperation with the trip buckle 400.

Preferably, as shown in fig. 1-17, the plug-in miniature circuit breaker of the present invention further includes a switching indicator 2 disposed in the housing 6 and used for indicating the switching state of the plug-in miniature circuit breaker, wherein the switching indicator 2 is disposed on one side of the operating member 1 and is in linkage fit with the operating member; the shell 6 comprises a switching-on and switching-off indication window 62a arranged on the shell; when the operating part 1 is pressed, the plug-in type miniature circuit breaker enters a closing state through the operating mechanism, the switching-on and switching-off indicating part 2 acts, and the switching-on state of the plug-in type miniature circuit breaker is indicated through the switching-on and switching-off indicating window 62 a. Further, as shown in fig. 1 to 17, the opening and closing indicator 2 includes an opening indicating surface 22 and a closing indicating surface 23 disposed thereon; when the plug-in type miniature circuit breaker is in an opening state, the opening indicating surface 22 is visible through the opening and closing indicating window 62a, the plug-in type miniature circuit breaker enters a closing state from the opening state by pressing the operating part 1, and the closing indicating surface 23 is visible through the opening and closing indicating window 62a by the action of the opening and closing indicating part 2. Further, as shown in fig. 1 to 17, the switching indicator 2 is pivotally disposed on the housing 6, the switching indicator 2 rotates to make the closing indication surface 23 visible through the switching indication window 62a by pressing the operating element 1 to make the plug-in miniature circuit breaker enter the closing state from the opening state.

Preferably, as shown in fig. 1 to 17, the opening and closing indicator 2 is rotatably disposed at an inner corner of the housing 6, and a chamfer structure is disposed at a vertex angle of the housing 6 corresponding to the inner corner, and the chamfer structure is provided with an opening and closing indicator window 62 a.

Specifically, as shown in fig. 1-5 and 8-17, the opening and closing indication member 2 is pivotally arranged at a right top corner of the upper end of the housing 6 and located on the right side of the operation member 1, a chamfer structure is arranged at a joint of an upper side wall and a right side wall of the housing 6, an opening and closing indication window 62a is arranged on the chamfer structure, and the opening and closing indication window 62a and the opening and closing indication member 2 are correspondingly arranged and used in a matched manner.

It should be noted that the switching-on/off indicator 2 is not limited to be pivotally arranged on the housing 6, the switching-on/off indicator 2 can also be arranged on the housing 6 in a way that a sliding rail is matched with a sliding rail, and the operating element 1 drives the switching-on/off indicator 2 to move up and down to indicate the switching-off/switching-on state of the plug-in miniature circuit breaker.

It should be noted that the utility model discloses a "divide-shut brake indicator 2 and operating parts 1 linkage cooperation" indicates that divide-shut brake indicator 2 and operating parts 1 synchronization motion, perhaps divide-shut brake indicator 2 follows the action of operating parts 1 and moves.

As shown in fig. 1 to 7, a first embodiment of the opening and closing indicating member 2 is in linkage engagement with the operating member 1.

As shown in fig. 2 and 4, the opening and closing indicating member 2 includes a first indicating member limiting platform 21a arranged on one side thereof, the operating member 1 includes a first operating member limiting boss 11a arranged on one side thereof, and the first indicating member limiting platform 21a is in limiting fit with the first operating member limiting boss 11 a; and the operating part 1 is pressed to enable the plug-in type miniature circuit breaker to enter a closing state from a switching-off state, the first operating part limiting boss 11a moves to one side of the first indicating part limiting platform 21a to remove the limiting fit between the first indicating part limiting platform 21a, and the switching-off and switching-on indicating part 2 rotates to enable the closing indicating surface 23 to be visible through the switching-off and switching-on indicating window 62 a.

Preferably, as shown in fig. 4-7, the switching-off and switching-on indicator 2 is of a cylindrical structure, and includes a first indicator limiting platform 21a disposed on one side thereof, and a switching-off indicating surface 22 and a switching-on indicating surface 23 disposed on the other end of the switching-off and switching-on indicator 2, the middle part of the switching-off and switching-on indicator 2 is pivotally disposed on the housing 6, and the first indicator limiting platform 21a includes a first limiting plane 210a disposed on one side thereof; when the plug-in type miniature circuit breaker enters a switching-on state (shown in fig. 5) from a switching-off state (shown in fig. 4), the first operation element limiting boss 11a moves from one end of the first limiting plane 210a to the other end of the first limiting plane 210a until the first operation element limiting boss 11a is separated from the first limiting plane 210a, and the limiting matching between the first operation element limiting boss 11a and the first indicating element limiting platform 21a is released.

Preferably, as shown in fig. 1 to 5, the opening and closing indicating member 2 further includes an indicating member shaft hole 20 disposed in a middle portion thereof, and the opening and closing indicating member 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicating member shaft hole 20; plug-in miniature circuit breaker still includes indicator

torsional spring

Specifically, as shown in fig. 2 and 4, the plug-in miniature circuit breaker is in a switching-off state, the switching-on/off indicator 2 is arranged on the right side of the operating element 1, the first operating element limiting boss 11a is arranged on the right side of the operating element 1, the first indicator limiting platform 21a is arranged on the left side of the switching-on/off indicator 2, the first limiting plane 210a is arranged on the left side of the first indicator limiting platform 21a, the first operating element limiting boss 11a is in abutting press fit with the upper end of the first limiting plane 210a to prevent the switching-on/off indicator 2 from rotating counterclockwise, the switching-off indicating surface 22 of the switching-on/off indicator 2 is opposite to the switching-on/off indicating window 62a at this time, and the switching-off indicating surface 22 is visible through the switching-; as shown in fig. 5, when the plug-in miniature circuit breaker is in a closed state, the first operating element limiting boss 11a is located below the first indicator limiting platform 21a (the first operating element limiting boss 11a is located below the lower end of the first limiting plane 210a), at this time, the closing indication surface 23 of the opening and closing indicator 2 is opposite to the opening and closing indication window 62a, and the closing indication surface 23 is visible through the opening and closing indication window 62 a; referring to fig. 2, 4 and 5, the operation element 1 is pressed to enable the plug-in miniature circuit breaker to enter a closing state from a switching-off state through the operation mechanism, the operation element 1 drives the first operation element limiting boss 11a to move from the upper end of the first limiting plane 210a to the lower end of the first limiting plane 210a until the first operation element limiting boss 11a is separated from the first limiting plane 210a, the first operation element limiting boss 11a and the first indicator limiting platform 21a are released from limiting matching, the indicator torsion spring 3 drives the switching-off indicator 2 to rotate anticlockwise, the closing indicator 23 is opposite to the switching-off indicator window 62a, and the closing indicator 23 is visible through the switching-off indicator window 62a to indicate that the plug-in miniature circuit breaker is in the closing state.

As shown in fig. 6 and 7, a first embodiment of the opening/closing indicator 2 is shown.

As shown in fig. 6 and 7, the switching-on/off indicator 2 is of a cylindrical structure, and includes a first indicator limiting platform 21a disposed on one side of the switching-on/off indicator 2, a switching-off indicating surface 22 and a switching-on indicating surface 23 disposed on the other side of the switching-on/off indicator 2, and an indicator shaft hole 20 disposed in the middle of the switching-on/off indicator 2; the switching-off indicating surface 22 and the switching-on indicating surface 23 are both arc-shaped surfaces, one end of the switching-off indicating surface 22 is close to one end of the first indicating piece limiting platform 21a, the other end of the switching-off indicating surface is connected with the switching-on indicating surface 23, and the other end of the switching-on indicating surface 23 is close to the other end of the first indicating piece platform 21 a; the length of the first indicator limiting platform 21a is larger than the outer diameter of the opening and closing indicator 2, and a first limiting plane 210a is arranged on one side of the first indicator limiting platform 21 a.

Specifically, as shown in fig. 6, the first indicator limiting platform 21a is disposed on the left side of the switching indicator 2 and on the left side of the rotation center of the switching indicator 2, the switching indicating surface 22 and the switching indicating surface 23 are disposed on the right side of the switching indicator 2 and on the right side of the rotation center of the switching indicator 2, the first limiting plane 210a is disposed on the left side of the first indicator limiting platform 21a, and the radius of the switching indicating surface 22 is greater than the radius of the switching indicating surface 23.

It should be noted that, in order to make the opening indication surface 22 and the closing indication surface 23 correspond to the opening state and the closing state of the plug-in type miniature circuit breaker, respectively, the opening indication surface 22 and the closing indication surface 23 may be different colors or bear different text marks, or have different colors and bear different text marks.

As shown in fig. 8 to 12, the second embodiment is a second embodiment in which the switching indicator 2 is interlocked with the operating element 1.

As shown in fig. 8-12, the opening and closing indicating member 2 includes a first indicating member driven boss 21b disposed on one side thereof, the operating member 1 includes a first operating member driving boss 11b disposed on one side thereof, and the first operating member driving boss 11b is in driving fit with the first indicating member driven boss 21 b; the operation piece 1 is pressed to enable the plug-in type miniature circuit breaker to enter a closing state from a switching-off state, the first operation piece driving boss 11b drives the switching-on/off indicating piece 2 to rotate through the first indicating piece driven boss 21b, and the closing indicating surface 23 is made to be visible through the switching-on/off indicating window 62 a.

Specifically, as shown in fig. 9 and 10, the plug-in miniature circuit breaker is in a switching-off state, the right side of the operating element 1 is provided with a first operating element driving boss 11b, the left side of the switching-off and switching-on indicating element 2 is provided with a first indicating element driven boss 21b, the first operating element driving boss 11b is arranged above the first indicating element driven boss 21b, at this time, the switching-off indicating surface 22 of the switching-off and switching-on indicating element 2 is opposite to the switching-off and switching-on indicating window 62a, and the switching-off indicating surface 22 is visible through the switching-off and switching-on indicating window 62 a; as shown in fig. 12, when the plug-in miniature circuit breaker is in a closed state, the first operating element driving boss 11b is located on the left side of the first indicating element driven boss 21b, and at this time, the closing indication surface 23 of the opening and closing indicating element 2 is opposite to the opening and closing indication window 62a, and the closing indication surface 23 is visible through the opening and closing indication window 62 a; referring to fig. 9, 10 and 12, when the plug-in miniature circuit breaker enters the closing state from the opening state, the operating element 1 is pressed, and the operating element 1 drives the opening/closing indicator 2 to rotate counterclockwise through the first operating element driving boss 11b and the first indicator driven boss 21b, so that the closing indication surface 23 is visible through the opening/closing indication window 62 a.

As shown in fig. 10, a second embodiment of the opening/closing indicator 2 is shown.

The opening and closing indicating member 2 is of a cylindrical structure and comprises a first indicating member driven boss 21b arranged on one side of the opening and closing indicating member 2, an opening indicating surface 22 and a closing indicating surface 23 arranged on the other side of the opening and closing indicating member 2, and an indicating member shaft hole 20 arranged in the middle of the opening and closing indicating member 2, wherein the opening and closing indicating member 2 is sleeved on a first mounting shaft 63 of the shell 6 through the indicating member shaft hole 20; plug-in miniature circuit breaker still includes indicator torsional spring 3, and indicator torsional spring 3 covers is established on first installation axle 63, and one end links to each other with divide-shut brake indicator 2, and the other end links to each other with casing 6, provides pivoted power for indicator 2. Further, the opening indicating surface 22 and the closing indicating surface 23 are both arc-shaped surfaces, one end of the opening indicating surface 22 is connected with one end of the closing indicating surface 23, and the first indicating piece driven boss 21b is located between the other end of the opening indicating surface 22 and the other end of the closing indicating surface 23. Further, the radius of the opening indicating surface 22 is larger than the radius of the closing indicating surface 23.

Specifically, as shown in fig. 10, the first indicator actuated boss 21b is provided on the left side of the opening/closing indicator 2 and on the left side of the rotation center of the opening/closing indicator 2, and the opening indicating surface 22 and the closing indicating surface 23 are provided on the right side of the opening/closing indicator 2 and on the right side of the rotation center of the opening/closing indicator 2. Further, as shown in fig. 10, a torsion spring limiting protrusion connected with the indicator torsion spring 3 is further arranged at the front end of the opening and closing indicator 2.

As shown in fig. 13 to 17, the third embodiment is a third embodiment in which the opening/closing indicator 2 is interlocked with the operating element 1.

As shown in fig. 13-17, the opening and closing indicating member 2 is a cylindrical structure and comprises a plurality of circumferentially distributed indicating member engaging teeth arranged on the side surface of the ring of the opening and closing indicating member 2, the operating member 1 comprises a plurality of operating member engaging teeth arranged side by side on one side thereof, and the indicating member engaging teeth and the operating member engaging teeth are engaged with each other; the operating part 1 is pressed to enable the plug-in type small circuit breaker to enter a closing state from a switching-off state, the switching-on and switching-off indicating part 2 is driven to rotate through the cooperation of the operating part tooth form and the indicating part tooth form, and the closing indicating surface 23 is made to be visible through the switching-on and switching-off indicating window opening 62 a.

As shown in fig. 15, a third embodiment of the opening/closing indicator 2 is shown.

The opening and closing indicating part 2 is of a cylindrical structure and comprises three indicating part engaging teeth arranged on one side of the opening and closing indicating part, an opening indicating surface 22 and a closing indicating surface 23 arranged on the other side of the opening and closing indicating part 2, and an indicating part shaft hole 20 arranged in the middle of the opening and closing indicating part 2; the three indicating piece rodents are respectively a first indicating piece rodent 21c1, a second indicating piece rodent 21c2 and a third indicating piece rodent 21c3 which are sequentially arranged, the first indicating piece rodent 21c1 is close to one end of the opening indicating surface 22, the other end of the opening indicating surface 22 is connected with one end of the closing indicating surface 23, and the other end of the closing indicating surface 23 is close to the third indicating piece rodent 21c 3; the switching-on and switching-off indicating member 2 is sleeved on the first mounting shaft 63 of the shell 6 through the indicating member shaft hole 20.

Preferably, as shown in fig. 15, the operating member 1 includes three operating member rodent teeth provided on one side thereof, a first operating member rodent 11c1, a second operating member rodent 11c2 and a third operating member rodent 11c3, which are arranged in this order, respectively. Specifically, the first operating member rodent 11c1, the second operating member rodent 11c2 and the third operating member rodent 11c3 are arranged on the top-down side.

Specifically, as shown in fig. 14 to 15, the plug-in miniature circuit breaker is in the open state, the operating element teeth are distributed on the right side of the operating element 1 from top to bottom, the indicating element teeth are distributed on the left side of the indicating element 2 from top to bottom, the operating element teeth and the indicating element teeth are meshed with each other, at this time, the opening indicating surface 22 of the opening and closing indicating element 2 is opposite to the opening and closing indicating window 62a, and the opening indicating surface 22 is visible through the opening and closing indicating window 62 a; as shown in fig. 17, the plug-in miniature circuit breaker is in a closing state, and at this time, the closing indicating surface 23 of the closing indicator 2; referring to fig. 14, 15 and 17, the plug-in miniature circuit breaker enters a closing state from a switching-off state, the operating element 1 is pressed downward, the operating element 1 drives the indicating element 2 to rotate counterclockwise through the meshing of the operating element tooth and the indicating element tooth, so that the closing indicating surface 23 is opposite to the switching-on and switching-off indicating window 62a, and the closing indicating surface 23 is visible through the switching-on and switching-off indicating window 62. Further, when the plug-in type small circuit breaker is in the opening state, the second indicator rodent 21c1 is located between the second operating member rodent 11c2 and the third operating member rodent 11c3, and the third operating member rodent 11c3 is located between the second indicator rodent 21c2 and the third indicator rodent 21c 3; the first indicator rodent 21c1 is located between the first operating member rodent 11c1 and the second operating member rodent 11c2 when the plug-in type small circuit breaker is in a closed state.

Preferably, as shown in fig. 18 to 29, the plug-in type miniature circuit breaker of the present invention further comprises an in-place indicating mechanism for indicating whether the plug-in type miniature circuit breaker is installed in place.

Preferably, as shown in fig. 18-24, is a first embodiment of the position indicating mechanism.

As shown in fig. 18-24, the housing 6 includes a position indicating window 62b and a projection 64 disposed thereon; the in-place indicating mechanism comprises a driven lug 51 and an in-place indicating end 4243 which are respectively arranged at the two ends of the in-place indicating mechanism, the driven lug 51 protrudes out of the shell 6 through an extending opening 64, and the in-place indicating end 4243 is arranged opposite to the in-place indicating window 62 b; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the driven protrusion 51, so that the in-place indication end 4243 indicates the plug-in type miniature circuit breaker to be in-place through the in-place indication window 62 b. Further, as shown in fig. 18-24, the in-place indicating end 4243 comprises a warning surface 42 and an in-place indicating surface 43; when the plug-in type miniature circuit breaker is not installed and the plug-in type miniature circuit breaker is installed to a circuit breaker assembly position and is not installed in place, the warning surface 42 is visible through the in-place indication window 62b to indicate that the plug-in type miniature circuit breaker is in an uninstalled in-place state; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indication surface 43 is visible through the in-place indication window 62b, indicating that the plug-in type miniature circuit breaker is in the in-place installation state. Further, as shown in fig. 18 to 24, the in-position indicating mechanism includes an in-position indicating member 4 and an in-position link member 5 pivotally disposed on the housing 6, respectively, one end of the in-position indicating member 4 is provided with an in-position indicating end 4243, the other end is in driving engagement with the in-position link member 5, and the other end of the in-position link member 5 is provided with a driven protrusion 51.

Specifically, as shown in fig. 18 to 24, the in-position indication window 62b is provided at the right top corner of the upper end of the housing 6, and the extension opening 64 is provided on the right side wall of the housing 6; the in-place indicating piece 4 is arranged at the right top corner of the upper end of the shell 6 in a pivoting manner, the in-place linkage piece 5 is arranged on the right side of the shell 6 in a pivoting manner and is positioned below the in-place indicating piece 4, an in-place indicating end 4243 is arranged at the upper end of the in-place indicating piece 4, the lower end of the in-place linkage piece 5 is in driving fit with the in-place linkage piece 5, a driven bulge 51 is arranged at the lower end of the in-place linkage piece 5, and the driven bulge 51 protrudes out; after the plug-in type miniature circuit breaker is assembled with a breaker assembly position and is installed in place, the shell of the breaker assembly position extrudes the driven protrusion 51 to enable the driven protrusion to move towards the interior of the shell 6, the in-place linkage piece 5 rotates clockwise, the upper end of the in-place linkage piece 5 drives the lower end of the in-place indicator 4 to enable the in-place indicator 4 to rotate anticlockwise, the in-place indicator surface 43 of the in-place indicator end 4243 is enabled to be opposite to the in-place indicator window 62b, and the in-place indicator surface 43 is visible through the in-place indicator window 62b to indicate that the plug-. Further, as shown in fig. 19, 21 and 23, a junction of the upper side wall and the right side wall of the housing 6 is provided with a chamfered structure, and the in-position indication window 62b is provided on the chamfered structure.

Preferably, as shown in fig. 19, the indicator 4 that targets in place is pivoted on the casing 6 through the second installation axle 63 of the casing 6, and the indicator 4 that targets in place and the divide-shut brake indicator 2 are coaxially installed, which is favorable for simplifying the installation structure and operation of the plug-in miniature circuit breaker, which are favorable for simplifying the structure of the casing 6 and saving the production cost of the casing 6.

Preferably, as shown in fig. 22 to 23, the in-place linkage 5 further includes a circuit breaker locking protrusion 53 disposed on one side of the in-place driving protrusion 52, and the circuit breaker locking protrusion 53 is in limit fit with the operating mechanism to prevent the operating element 1 from moving in the closing direction of the circuit breaker (prevent the operating element 1 from moving downward); after the plug-in type miniature circuit breaker is installed to a circuit breaker assembly position and is installed in place, a shell of the circuit breaker assembly position extrudes the driven protrusion 51 to enable the in-place linkage piece 5 to rotate, and the limit matching of the locking protrusion 53 and the operating mechanism is released; further, as shown in fig. 22-23, the operating mechanism further includes a first link 7, the first link 7 includes a first end 70 of the link inserted into the operating member 1; the operating part 1 is in limit fit with the circuit breaker locking protrusion 53, or the first end 70 of the connecting rod is in limit fit with the circuit breaker locking protrusion 53.

Specifically, as shown in fig. 22-23, the circuit breaker locking protrusion 53 is disposed on the left side of the in-place driving protrusion 52, and is located below the first end 70 of the connecting rod and in limit fit with the first end 70 of the connecting rod to prevent the operating element 1 from moving downward, after the plug-in miniature circuit breaker is assembled to the circuit breaker and assembled in place, the housing of the circuit breaker assembly presses the driven protrusion 51 to move the driven protrusion into the housing 6, so that the in-place linkage 5 rotates clockwise, the circuit breaker locking protrusion 53 moves to the right side of the first end 70 of the connecting rod to release the limit fit with the first end 70 of the connecting rod, and the operating element 1 is pressed downward, so that the plug-in.

Preferably, as shown in fig. 18 to 24, the position indicating member 4 is pivotally provided at the middle portion thereof on the housing 6, and includes a position indicating end 4243 and a position driven protrusion 41 provided at both ends thereof, respectively; the middle part of the in-position linkage piece 5 is pivotally arranged on the shell 6 and comprises an in-position driving lug 52 and a driven lug 51 which are respectively arranged at the two ends of the in-position linkage piece, and the in-position driving lug 52 is in driving fit with the in-position driven lug 41.

As shown in fig. 24, is a first embodiment of the in-place indicator 4.

The in-place indicator 4 comprises a rotating disk 40, and in-place indicating ends 4243 and in-place driven protrusions 41 which are respectively arranged at two ends of the rotating disk 40; the middle part of the rotating disc 40 is provided with an in-place indicating member shaft hole, and the rotating disc 40 is sleeved on the first mounting shaft 63 of the shell 6 through the in-place indicating member shaft hole; the in-place indicating end 4243 comprises a warning surface 42 and an in-place indicating surface 43, the warning surface 42 and the in-place indicating surface 43 are both arc-shaped surfaces, and the radius of the warning surface 42 is larger than that of the in-place indicating surface 43. Further, the warning surface 42 and the in-place indicating surface 43 may be different colors to indicate the in-place state and the in-place state of the circuit breaker, or different text marks may be carried on the warning surface 42 and the in-place indicating surface 43 to indicate the in-place state and the in-place state of the circuit breaker, and of course, the warning surface 42 and the in-place indicating surface 43 may have different colors and text marks, respectively.

It should be noted that the in-place indicator 4 may be provided with only the warning surface 42 instead of the in-place indication surface 43, and when the warning surface 42 is not visible through the in-place indication window 62b, it is described that the plug-in type miniature circuit breaker is in the in-place installation state, which is beneficial to simplify the structure of the in-place indicator 4 and save the cost.

As shown in fig. 22-23, is one embodiment of the position linkage 5.

The in-place linkage piece 5 is of a rod-shaped structure and comprises an in-place driving protrusion 52 and a driven protrusion 51 which are respectively arranged at two ends of the in-place linkage piece, and a circuit breaker locking protrusion 53 arranged on one side of the in-place driving protrusion 52; the passive protrusion 51 and the circuit breaker locking protrusion 53 are respectively located on both sides of the in-place linkage 5, the passive protrusion 51 is located on one side of the rotation center of the in-place linkage 5, and the circuit breaker locking protrusion 53 and the in-place driving protrusion 52 are located on the other side of the rotation center of the in-place linkage 5.

As shown in fig. 25-27, is a second embodiment of the in-position indicating mechanism.

The housing 6 includes a position indicating window 62b and a projection 64 provided thereon; the in-place indicating mechanism comprises an in-place indicating piece 4, the middle part of the in-place indicating piece 4 is arranged on the shell 6 in a pivoting mode, the in-place indicating piece 4 comprises an indicating end 4cd and an indicating piece driven end 4a which are respectively arranged at the two ends of the in-place indicating piece 4, the indicating end 4cd is arranged opposite to the in-place indicating window 62b, and the indicating piece driven end 4a is arranged on the outer side of the shell 6 in a protruding mode through an extending opening 64; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the indicator driven end 4a, so that the indicator end 4cd indicates that the plug-in type miniature circuit breaker is in the installation in place state through the in-place indicator window 62 b. Further, the indication end 4cd includes a warning side surface 4c and an in-place indication side surface 4 d; when the plug-in type miniature circuit breaker is not installed and the plug-in type miniature circuit breaker is installed to a circuit breaker assembly position and is installed in place, the warning side surface 4c is visible through the indicating window 62b to indicate that the plug-in type miniature circuit breaker is in a state of not being installed in place; after the plug-in type miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indication side surface 4d is visible through the in-place indication window 62b, and indicates that the plug-in type miniature circuit breaker is in the in-place installation state.

Specifically, as shown in fig. 25 to 27, the indicating end 4cd and the indicating member actuated end 4a are respectively disposed at the upper and lower ends of the in-position indicating member 4, and the middle of the in-position indicating member 4 is pivotally disposed on the housing 6; as shown in fig. 25-26, the plug-in miniature circuit breaker is not installed or mounted to the circuit breaker assembly site and is not installed in place, with the alert side 4c of the indicating end 4cd opposing the in-place indicating window 62b, the alert side 4c being visible through the in-place indicating window 62 b; as shown in fig. 27, the plug-in type miniature circuit breaker is mounted to the circuit breaker assembly position and mounted in position, with the in-position indication side 4d of the indication end 4cd opposing the in-position indication window 62b, the in-position indication side 4d being visible through the in-position indication window 62 b; referring to fig. 25-27, the plug-in miniature circuit breaker enters the mounted-in-position state from the non-mounted-in-position state, the housing of the circuit breaker assembly presses the indicator actuated end 4a to move inwardly of the housing 6, causing the in-position indicator 4 to rotate clockwise, and the indicator end 4cd moves rightward causing the in-position indicator side 4d to be visible through the in-position indicator window 62 b.

Preferably, as shown in fig. 25 to 27, the in-place indicator 4 further includes a circuit breaker locking boss 4b, and the circuit breaker locking boss 4b is in limit fit with the operating mechanism to prevent the operating element 1 from moving in the closing direction of the circuit breaker (prevent the operating element 1 from moving downward); after the plug-in type miniature circuit breaker is installed to a circuit breaker assembly position and installed in place, the shell of the circuit breaker assembly position extrudes the indicator driven end 4a to enable the indicator 4 in place to rotate, the limiting fit between the operating mechanism and the circuit breaker locking boss 4b is released, and the operating piece 1 is pressed to close the movable contact 900c and the fixed contact 910c through the operating mechanism. Further, as shown in fig. 25 to 27, the operating member 1 includes a link mounting platform 12 disposed at one side thereof, the first link 7 of the operating mechanism includes a first link end 70 inserted into the link mounting platform 12, and the link mounting platform 12 is in limit fit with the circuit breaker locking boss 4b, or the first link end 70 is in limit fit with the circuit breaker locking boss 4 b.

Specifically, as shown in fig. 25 to 27, a link mounting table 12 is disposed on the right side of the operating element 1, a jack for inserting the first link 7 is disposed on the link mounting table 12, a circuit breaker locking boss 4b is disposed on the left side of the in-place indicator 4, the circuit breaker locking boss 4b is located below the link mounting table 12 or below the first link end 70 and is in limit fit with the link mounting table 12 or the first link end 70, after the plug-in miniature circuit breaker is mounted to the circuit breaker mounting position and mounted in place, the housing of the circuit breaker mounting position presses the indicator driven end 4a to move the indicator into the housing 6, and the in-place indicator 4 rotates clockwise to move the circuit breaker locking boss 4b to the right side of the link mounting table 12 or the first link end 70, so as to release the limit fit with the link mounting table 12 or the first link. Of course, other parts of the operating element 1 can be in limit fit with the circuit breaker locking boss 4b, and after the in-place indicating member 4 rotates clockwise, the operating element 1 contacts with the circuit breaker locking boss 4b for limit fit.

As shown in fig. 26, is a second embodiment of the in-place indicator 4.

The in-place indicating part 4 comprises an indicating end 4cd, an indicating part driven end 4a and a circuit breaker locking boss 4b, the indicating end 4cd and the indicating part driven end 4a are respectively arranged at the upper end and the lower end of the in-place indicating part 4, the circuit breaker locking boss 4b is arranged in the middle of the in-place indicating part 4, the circuit breaker locking boss 4b and the indicating part driven end 4a are respectively positioned at the two sides of the in-place indicating part 4, and the circuit breaker locking boss 4b is positioned between the rotating center of the in-place indicating part 4 and the indicating end 4 cd. Further, the in-position indicator 4 is pivotally provided on the housing 6 by the second mounting shaft 65 of the housing 6. Specifically, as shown in fig. 26, the indicating end 4cd and the indicator actuated end 4a are respectively disposed at the upper end and the lower end of the in-place indicator 4, the circuit breaker locking boss 4b and the indicator actuated end 4a are respectively disposed at the left side and the right side of the in-place indicator 4, and the circuit breaker locking boss 4b is disposed below the indicating end 4cd and above the rotation center of the in-place indicator 4. A third embodiment of the position indicating mechanism is shown in fig. 28-29. The in-position indicating mechanism of the present embodiment differs from the second embodiment in that: the in-place indicator 4 is not provided with a circuit breaker locking boss 4 b; the circuit breaker locking part 8 comprises a locking boss 81 and a locking part driven end 80 which are respectively arranged at two ends of the circuit breaker locking part, the locking boss 80 is in limit fit with an operating mechanism to prevent the operating part 1 from moving towards the closing direction of the circuit breaker, after the plug-in miniature circuit breaker is installed to a circuit breaker assembling position and installed in place, a shell of the circuit breaker assembling position extrudes the locking part driven end 80 to enable the circuit breaker locking part 8 to rotate to remove the limit fit of the locking boss 81 and the operating mechanism, and the operating part 1 is pressed to enable the movable contact 900c and the static contact 910c to be closed through the. Further, the operating part 1 comprises a connecting rod mounting table 12 arranged on one side of the operating part, the first connecting rod 7 of the operating mechanism comprises a first connecting rod end 70 inserted into the connecting rod mounting table 12, and the connecting rod mounting table 12 is in limit fit with the locking boss 81, or the first connecting rod end 70 is in limit fit with the locking boss 81.

Preferably, as shown in fig. 28-29, the position indicator 4 and the circuit breaker lock 8 are both pivotally mounted to the housing 6 by a second mounting shaft 65.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A plug-in type miniature circuit breaker comprises a shell (6), an operating mechanism and a contact system, wherein the operating mechanism comprises an operating part (1) with one end inserted into the shell (6) and the other end protruding out of the shell (6), and the contact system comprises a moving contact (900c) with one end connected with the operating mechanism and a fixed contact (910c) matched with the moving contact (900c) for use;

the method is characterized in that: the shell (6) comprises a switching-on and switching-off indication window (62a) arranged on the shell; the plug-in type miniature circuit breaker further comprises a switching-on and switching-off indicating piece (2) which is arranged in the shell (6) and used for indicating the switching-on and switching-off state of the plug-in type miniature circuit breaker, wherein the switching-on and switching-off indicating piece (2) is arranged on one side of the operating piece (1) and is in linkage fit with the operating piece; the operation piece (1) is pressed to enable the plug-in type miniature circuit breaker to enter a closing state through the operation mechanism, the switching-on and switching-off indicating piece (2) is enabled to act, and the closing state of the plug-in type miniature circuit breaker is indicated through the switching-on and switching-off indicating window (62 a).

2. A plug-in miniature circuit breaker according to claim 1, characterized in that: the opening and closing indicating piece (2) comprises an opening indicating surface (22) and a closing indicating surface (23) which are arranged on the opening and closing indicating piece;

when the plug-in type miniature circuit breaker is in an opening state, the opening indicating surface (22) is visible through the opening and closing indicating window (62a), the plug-in type miniature circuit breaker is in a closing state from the opening state by pressing the operating part (1), and the closing indicating part (2) acts to make the closing indicating surface (23) visible through the opening and closing indicating window (62 a).

3. A plug-in miniature circuit breaker according to claim 2, characterized in that: the switching-on and switching-off indicating piece (2) is arranged on the shell (6) in a pivoting mode, the plug-in miniature circuit breaker enters a switching-on state from a switching-off state by pressing the operating piece (1), and the switching-on and switching-off indicating piece (2) rotates to enable a switching-on indicating surface (23) to be visible through the switching-on and switching-off indicating window (62 a).

4. A plug-in miniature circuit breaker according to claim 3, characterized in that: when the plug-in type miniature circuit breaker is in a closing state, and the plug-in type miniature circuit breaker enters a breaking state through the pulling operation part (1) through the operation mechanism, the operation part (1) drives the opening and closing indicating part (2) to rotate, so that the opening and closing indicating surface (22) is visible through the opening and closing indicating window (62 a);

or when the plug-in type miniature circuit breaker is in a closing state, the plug-in type miniature circuit breaker enters a switching-off state by pressing the operating part (1) through the operating mechanism, meanwhile, the operating part (1) bounces, and the operating part (1) drives the switching-on and switching-off indicating part (2) to rotate, so that the switching-off indicating surface (22) is visible through the switching-on and switching-off indicating window (62).

5. A plug-in miniature circuit breaker according to any of claims 2-4, characterized in that: the opening and closing indicating part (2) comprises a first indicating part limiting platform (21a) arranged on one side of the opening and closing indicating part, the operating part (1) comprises a first operating part limiting boss (11a) arranged on one side of the operating part, and the first indicating part limiting platform (21a) is in limiting fit with the first operating part limiting boss (11 a); the operation piece (1) is pressed to enable the plug-in type miniature circuit breaker to enter a closing state from a switching-off state, the first operation piece limiting boss (11a) moves to one side of the first indicating piece limiting platform (21a), limiting matching between the first operation piece limiting boss and the first indicating piece limiting platform (21a) is released, the switching-on and switching-off indicating piece (2) rotates, and a closing indicating surface (23) is made to be visible through the switching-on and switching-off indicating window (62 a).

6. A plug-in miniature circuit breaker according to claim 5, characterized in that: the opening and closing indicating piece (2) is of a cylindrical structure and comprises a first indicating piece limiting platform (21a) arranged on one side of the opening and closing indicating piece, an opening indicating surface (22) and a closing indicating surface (23) arranged on the other side of the opening and closing indicating piece (2), the middle of the opening and closing indicating piece (2) is arranged on the shell (6) in a pivoting mode, and the first indicating piece limiting platform (21a) comprises a first limiting plane (210a) arranged on one side of the first indicating piece;

the plug-in type miniature circuit breaker enters a closing state from a switching-off state, the first operating part limiting boss (11a) moves from one end of the first limiting plane (210a) to the other end of the first limiting plane (210a) until the first operating part limiting boss (11a) is separated from the first limiting plane (210a), and limiting matching between the first operating part limiting boss (11a) and the first indicating part limiting platform (21a) is released.

7. A plug-in miniature circuit breaker according to claim 6, wherein: the opening and closing indicating member (2) further comprises an indicating member shaft hole (20) formed in the middle of the opening and closing indicating member, and the opening and closing indicating member (2) is sleeved on a first mounting shaft (63) of the shell (6) through the indicating member shaft hole (20); the switching-off indicating surface (22) and the switching-on indicating surface (23) are arc surfaces, and one end of the switching-off indicating surface (22) is connected with one end of the switching-on indicating surface (23); plug-in miniature circuit breaker still includes indicator torsional spring (3), and indicator torsional spring (3) cover is established on first installation axle (63), and one end links to each other with divide-shut brake indicator (2), and the other end links to each other with casing (6), provides pivoted power for divide-shut brake indicator (2).

8. A plug-in miniature circuit breaker according to any of claims 2-4, characterized in that: the opening and closing indicating member (2) comprises a first indicating member driven boss (21b) arranged on one side of the opening and closing indicating member, the operating member (1) comprises a first operating member driving boss (11b) arranged on one side of the operating member, and the first operating member driving boss (11b) is in driving fit with the first indicating member driven boss (21 b);

the operation piece (1) is pressed to enable the plug-in type miniature circuit breaker to enter a closing state from a switching-off state, the first operation piece driving boss (11b) drives the switching-on and switching-off indicating piece (2) to rotate through the first indicating piece driven boss (21b), and a closing indicating surface (23) is made to be visible through the switching-on and switching-off indicating window (62 a).

9. A plug-in miniature circuit breaker according to claim 8, wherein: the opening and closing indicating member (2) is of a cylindrical structure and comprises a first indicating member driven boss (21b) arranged on one side of the opening and closing indicating member (2), an opening indicating surface (22) and a closing indicating surface (23) arranged on the other side of the opening and closing indicating member (2), and an indicating member shaft hole (20) arranged in the middle of the opening and closing indicating member (2), wherein the opening and closing indicating member (2) is sleeved on a first mounting shaft (63) of the shell (6) through the indicating member shaft hole (20); the switching-off indicating surface (22) and the switching-on indicating surface (23) are arc-shaped surfaces, one end of the switching-off indicating surface (22) is connected with one end of the switching-on indicating surface (23), and the first indicating piece driven boss (21b) is positioned between the other end of the switching-off indicating surface (22) and the other end of the switching-on indicating surface (23); plug-in miniature circuit breaker still includes indicator torsional spring (3), and indicator torsional spring (3) cover is established on first installation axle (63), and one end links to each other with divide-shut brake indicator (2), and the other end links to each other with casing (6).

10. A plug-in miniature circuit breaker according to any of claims 2-4, characterized in that: the opening and closing indicating part (2) is of a cylindrical structure and comprises a plurality of indicating part rodent teeth which are circumferentially distributed and arranged on the side face of the ring of the opening and closing indicating part (2), the operating part (1) comprises a plurality of operating part rodent teeth which are arranged on one side of the operating part (1) side by side, and the indicating part rodent teeth and the operating part rodent teeth are meshed with each other;

the operation piece (1) is pressed to enable the plug-in type small circuit breaker to enter a closing state from a switching-off state, the switching-on and switching-off indicating piece (2) is driven to rotate through the cooperation of the operation piece tooth teeth and the indicating piece tooth teeth, and a closing indicating surface (23) is made to be visible through the switching-on and switching-off indicating window (62 a).

11. A plug-in miniature circuit breaker according to claim 10, wherein: the opening and closing indicating piece (2) is of a cylindrical structure and comprises three indicating piece engaging teeth arranged on one side of the opening and closing indicating piece, an opening indicating surface (22) and a closing indicating surface (23) arranged on the other side of the opening and closing indicating piece (2), and an indicating piece shaft hole (20) arranged in the middle of the opening and closing indicating piece (2); the three indicating piece rodents are respectively a first indicating piece rodent (21c1), a second indicating piece rodent (21c2) and a third indicating piece rodent (21c3) which are sequentially arranged, the first indicating piece rodent (21c1) is close to one end of the opening indicating surface (22), the other end of the opening indicating surface (22) is connected with one end of the closing indicating surface (23), and the other end of the closing indicating surface (23) is close to the third indicating piece rodent (21c 3); the opening and closing indicating member (2) is sleeved on a first mounting shaft (63) of the shell (6) through an indicating member shaft hole (20).

12. A plug-in miniature circuit breaker according to claim 11, wherein: the operating member (1) includes three operating member teeth arranged on one side thereof, namely a first operating member tooth (11c1), a second operating member tooth (11c2) and a third operating member tooth (11c3) which are arranged in sequence;

when the plug-in type small circuit breaker is in the opening state, the second indicator rodent (21c2) is positioned between the second operating member rodent (11c2) and the third operating member rodent (11c3), and the third operating member rodent (11c3) is positioned between the second indicator rodent (21c2) and the third indicator rodent (21c 3); the first indicator mesh (21c1) is located between the first operating member mesh (11c1) and the second operating member mesh (11c2) when the plug-in type small circuit breaker is in a closing state.

13. A plug-in miniature circuit breaker according to claim 3, characterized in that: divide-shut brake indicator (2) rotate to set up in an interior angle department of casing (6), and the apex angle department that corresponds with this interior angle department of casing (6) is equipped with the chamfer structure, and the structural divide-shut brake that is equipped with of chamfer indicates window (62 a).