CN211265388U

CN211265388U - Circuit breaker with switching-on and switching-off monitoring device

Info

Publication number: CN211265388U
Application number: CN202020135482.2U
Authority: CN
Inventors: 蒋亚; 张亦威; 赵科达; 杨启勇; 刘超
Original assignee: Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Electric Co Ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-08-14
Anticipated expiration: 2030-01-21

Abstract

A circuit breaker with a switching-on/off monitoring device. The problem of current divide-shut brake monitoring devices realize the installation through the structure that increases the mesochite or change the housing, cause product structure complicacy, assemble troublesome is solved. The movable contact piece is arranged on the rotating shaft and is in linkage connection with the rotating shaft, and the shell is provided with a switching-on and switching-off monitoring device which is communicated with the control circuit board and is used for transmitting the monitored state of the movable contact piece to the control circuit board. The beneficial effects of the utility model are that, set up divide-shut brake monitoring devices and can monitor the operating condition of circuit breaker to make control scheme board obtain the divide-shut brake state signal of circuit breaker, the utility model has the advantages of simple structure, the modularization installation is fixed to make product convenient assembling, and dismantles, changes convenience, long service life.

Description

Circuit breaker with switching-on and switching-off monitoring device

Technical Field

The utility model relates to a moulded case circuit breaker, concretely relates to circuit breaker with divide-shut brake monitoring devices.

Background

The molded case circuit breaker is also called a device type circuit breaker, all parts are sealed in a plastic shell, and an auxiliary contact, an undervoltage release, a shunt release and the like are modularized. The plastic shell type circuit breaker has the protection functions of overload long time delay and short circuit instantaneous action, and can be matched with module units such as a leakage device, a measuring mechanism and an electric operating mechanism for use. In order to realize the self-detection of the molded case circuit breaker in the switching-on and switching-off state, the conventional method is to additionally install an accessory module on a circuit breaker shell, so that a microswitch for detecting the working state of the circuit breaker is installed on the accessory module, the accessory module is a common auxiliary contact device, the setting cost is high, the occupied space is large, and the circuit breaker can not be installed due to the limitation of the space of the circuit breaker shell. In addition, according to the requirements of relevant regulations of the existing power grid, the molded case circuit breaker needs to have a self-checking function of the working state, meanwhile, external equipment matched with the molded case circuit breaker needs to detect the working state of the molded case circuit breaker, namely, the external checking function is realized, two detection modes are required not to share one microswitch, and the independence and the accuracy of respective detection lines are guaranteed. Therefore, the micro-switches in the existing molded case circuit breaker are fixedly installed in the cavity at the bottom of the housing through the matching of the two pin shafts and the split check ring, and the pin shafts are installed in a limiting manner by using the limiting bosses, so that the installation structure is complex, a large number of parts are used, the installation space is occupied, the installation space at the bottom of the housing is limited, and the two micro-switches cannot be installed at the same time; even if install the micro-gap switch of two looks isostructures on the housing, all will contact with the pivot cooperation according to two micro-gap switch, must make two micro-gap switches and install the moving contact of pivot very close to, creepage distance is short, leads to the electric arc that the moving contact produced when the divide-shut brake can direct contact and puncture micro-gap switch's metal contact, damages micro-gap switch, and electric insulation is poor. In conclusion, due to the limitation of installation space and electrical insulation, two microswitches cannot be installed on the housing of the existing molded case circuit breaker at the same time, the requirement of a power grid is not met, the development of the molded case circuit breaker is not facilitated, and the design difficulty is increased.

SUMMERY OF THE UTILITY MODEL

For solving current divide-shut brake monitoring devices among the background art and realizing the installation through the structure that increases mesochite or change the housing, cause the product structure complicated, assemble troublesome problem, the utility model provides a circuit breaker with divide-shut brake monitoring devices.

The technical scheme of the utility model is that: the utility model provides a circuit breaker with divide-shut brake monitoring devices, includes casing and control scheme board, the casing on movable contact spring and pivot, the movable contact spring locate in the pivot and be connected with the pivot linkage, the casing on be equipped with divide-shut brake monitoring devices, divide-shut brake monitoring devices be linked together with the control scheme board and be used for transmitting the movable contact spring state of monitoring to the control scheme board.

As an improvement of the utility model, divide-shut brake monitoring devices include fixed plate and micro-gap switch, micro-gap switch locate on the fixed plate, micro-gap switch have the first state and the pivot of instructing circuit breaker combined floodgate state and rotate the second state that the back switches over and is used for instructing circuit breaker state of separating brake.

As a further improvement, the shell is provided with a limit clamping groove, and the fixing plate is provided with a clamping pin matched with the limit clamping groove.

As a further improvement of the utility model, the shell on be equipped with spacing fender shoulder, the fixed plate on be equipped with lay in spacing fender shoulder lay the foot.

As a further improvement, the spacing shoulder is provided with a fixing hole, the mounting foot is provided with a fixing screw, and the fixing screw passes the mounting foot and locates in the fixing hole of the spacing shoulder.

As a further improvement, the microswitch comprises a control pressure plate and a wiring end connected with the control circuit board, and the rotating shaft drives the control pressure plate to move and switch the microswitch.

As a further improvement, the micro-gap switch is arranged at the rear of the movable contact spring, and the control pressure plate of the micro-gap switch is arranged above the rotating shaft.

As a further improvement, the fixed plate on be equipped with two at least micro-gap switches, different micro-gap switches are fixed in through the connecting piece the fixed plate on, the fixed plate be the slice setting.

As a further improvement, the fixed plate on be equipped with a plurality of through-holes, every micro-gap switch corresponds a through-hole setting, micro-gap switch on be equipped with the mounting hole, the connecting piece pass different micro-gap switch in proper order and be fixed in the fixed plate on.

As a further improvement, the fixed plate on be equipped with occlusion part, be used for the supporting part of support connecting piece and be used for the fixed part of connecting piece, occlusion part department be equipped with the storage tank that is used for holding connecting piece one end, the supporting part locate between the different through-holes of fixed plate.

The beneficial effects of the utility model are that, set up divide-shut brake monitoring devices and can monitor the operating condition of circuit breaker to make control scheme board obtain the divide-shut brake state signal of circuit breaker, the utility model has the advantages of simple structure, the modularization installation is fixed to make product convenient assembling, and dismantles, changes convenience, long service life.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Fig. 3 is a schematic structural view of the housing 1 in fig. 1.

Fig. 4 is an explosion structure diagram of the switching monitoring device 4 shown in fig. 1.

Fig. 5 is a schematic structural view of the fixing plate 5 in fig. 4.

In the figure, 1, a housing; 11. a limiting clamping groove; 12. a limiting shoulder; 121. a fixing hole; 13. limiting slots; 2. a movable contact spring; 3. a rotating shaft; 4. a switching-on and switching-off monitoring device; 5. a fixing plate; 51. clamping a pin; 52. placing feet; 53. a set screw; 54. a through hole; 55. a shielding portion; 56. a support portion; 57. a fixed part; 58. a containing groove; 59. a pin; 6. a microswitch; 61. controlling the pressure plate; 62. a terminal; 63. mounting holes; 7. a connecting member.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

referring to fig. 1 and fig. 2-5, the circuit breaker with the switching-on/off monitoring device comprises a shell 1 and a control circuit board, wherein a movable contact piece 2 and a rotating shaft 3 are arranged on the shell 1, the movable contact piece 2 is arranged on the rotating shaft 3 and is in linkage connection with the rotating shaft 3, a switching-on/off monitoring device 4 is arranged on the shell 1, and the switching-on/off monitoring device 4 is communicated with the control circuit board and is used for transmitting the state of the monitored movable contact piece 2 to the control circuit board. The beneficial effects of the utility model are that, set up divide-shut brake monitoring devices and can monitor the operating condition of circuit breaker to make control scheme board obtain the divide-shut brake state signal of circuit breaker, the utility model has the advantages of simple structure, the modularization installation is fixed to make product convenient assembling, and dismantles, changes convenience, long service life. And the performance of the product is greatly improved, the production efficiency of the product is improved, and the quality of the product is improved.

Divide closing monitoring devices 4 include fixed plate 5 and micro-gap switch 6, micro-gap switch 6 locate on fixed plate 5, micro-gap switch 6 have the first state of instructing the breaker state of closing and pivot 3 switch over the second state that is used for instructing the breaker state of opening after rotating. Specifically, the control pressing plate of the microswitch is attached to the rotating shaft, when the control pressing plate of the microswitch is matched with the rotating shaft in the breaker body in the opening and closing processes of the breaker, the opening and closing states of the microswitch are switched, and the opening and closing states are transmitted to a control part (a control circuit board) through a lead to be processed, so that the opening and closing state monitoring function of the breaker is realized.

The shell 1 is provided with a limiting clamping groove 11, and the fixing plate 5 is provided with a clamping pin 51 matched with the limiting clamping groove 11. The fixing plate and the shell are convenient to mount and fix through the matching of the clamping pins and the clamping grooves. Specifically, the housing is provided with a limit slot 13, and the fixing plate is provided with a pin 59 adapted to the limit slot. The structure reasonably utilizes the space on the shell (base or pedestal) of the circuit breaker, and simultaneously ensures the reliable limit of the product.

The shell 1 is provided with a limiting shoulder 12, and the fixing plate 5 is provided with a mounting foot 52 arranged on the limiting shoulder 12. Specifically, the limiting blocking shoulder 12 is provided with a fixing hole 121, the placing leg 52 is provided with a fixing screw 53, and the fixing screw 53 penetrates through the placing leg 52 and is arranged in the fixing hole 121 of the limiting blocking shoulder 12. More specifically speaking, card foot and slot locate one side of fixed plate, lay the foot and locate the opposite side of fixed plate, such structure makes the product spacing reliable, can guarantee to pack into normally at operating device anytime, simple structure, dismouting, easy maintenance. The utility model discloses as long as just can realize further fixed mounting through a set screw, convenient dismantlement, change, it is fixed reliable.

The microswitch 6 comprises a control pressing plate 61 and a wiring terminal 62 connected with the control circuit board, and the rotary shaft 3 drives the control pressing plate 61 to act to switch the microswitch 6 when rotating. The utility model discloses provide circuit breaker branch, combined floodgate state, reliable and stable by the pivot. Specifically, the microswitch 6 is arranged behind the movable contact piece 2, and the control pressure plate 61 of the microswitch 6 is arranged above the rotating shaft 3. Because the microswitch is arranged behind the movable contact (usually, an arc extinguishing system is arranged at the contact system), namely, the rear part of the arc extinguishing system, the microswitch can ensure the safe and reliable operation of the microswitch.

The fixing plate 5 is provided with at least two micro switches 6, different micro switches 6 are fixed on the fixing plate 5 through connecting pieces 7, and the fixing plate 5 is arranged in a sheet shape. The utility model discloses support two micro-gap switches and together install, can the independent utility, and can whole dismouting, realize modularization dismouting, maintenance, simple structure, convenient assembling, spare part is few. And the fixed plate is the piece formula, and the space occupies for a short time, can assemble on the casing, and the level does not basically exceed the casing, can not influence the assembly of other parts, and is less to current circuit breaker structural change, and the product general distribution performance is higher.

The fixing plate 5 is provided with a plurality of through holes 54, each micro switch 6 is arranged corresponding to one through hole 54, the micro switches 6 are provided with mounting holes 63, and the connecting pieces 7 sequentially penetrate through different micro switches 6 to be fixed on the fixing plate 5. The structure enables a plurality of micro switches to be installed and used together, realizes modular assembly, and simplifies product structure and assembly.

The fixing plate 5 is provided with a shielding part 55, a supporting part 56 for supporting the connecting piece 7 and a fixing part 57 for fixing the connecting piece 7, the shielding part 55 is provided with a containing groove 58 for containing one end of the connecting piece 7, and the supporting part 56 is arranged between different through holes 54 of the fixing plate 5. The structure ensures that the end part of the connecting piece is not exposed basically when the connecting piece is installed, the connecting piece is more attractive and plays a certain protection role, meanwhile, the supporting part provides support, the requirement on the rigidity of the connecting piece is low, the product assembly is convenient, and the connecting piece can be a screw, a bolt and other connecting pieces. Of course, in the actual production process, the micro switch can also be fixed on the fixing plate through clamping, interference or other modes.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. The utility model provides a circuit breaker with divide-shut brake monitoring devices, includes casing (1) and control scheme board, its characterized in that: the movable contact spring monitoring device is characterized in that the movable contact spring (2) and the rotating shaft (3) are arranged on the shell (1), the movable contact spring (2) is arranged on the rotating shaft (3) and is in linkage connection with the rotating shaft (3), the shell (1) is provided with a switching-on and switching-off monitoring device (4), and the switching-on and switching-off monitoring device (4) is communicated with the control circuit board and is used for transmitting the state of the monitored movable contact spring (2) to the control circuit board.

2. The circuit breaker with the switching-on and switching-off monitoring device according to claim 1, wherein the switching-on and switching-off monitoring device (4) comprises a fixing plate (5) and a microswitch (6), the microswitch (6) is arranged on the fixing plate (5), and the microswitch (6) has a first state for indicating the switching-on state of the circuit breaker and a second state for indicating the switching-off state of the circuit breaker after a rotating shaft (3) rotates.

3. The circuit breaker with the switching-on/off monitoring device according to claim 2, wherein the housing (1) is provided with a limiting clamping groove (11), and the fixing plate (5) is provided with a clamping pin (51) matched with the limiting clamping groove (11).

4. The circuit breaker with the switching-on/off monitoring device according to claim 2 or 3, wherein the housing (1) is provided with a limiting stop shoulder (12), and the fixing plate (5) is provided with a mounting foot (52) arranged on the limiting stop shoulder (12).

5. The circuit breaker with the switching-on/off monitoring device according to claim 4, wherein the limiting blocking shoulder (12) is provided with a fixing hole (121), the placing leg (52) is provided with a fixing screw (53), and the fixing screw (53) penetrates through the placing leg (52) and is arranged in the fixing hole (121) of the limiting blocking shoulder (12).

6. The circuit breaker with the switch-on/off monitoring device according to claim 2, wherein the micro switch (6) comprises a control pressing plate (61) and a terminal (62) connected with the control circuit board, and the rotating shaft (3) drives the control pressing plate (61) to move to switch the micro switch (6) when rotating.

7. The circuit breaker with the switch-on/off monitoring device according to claim 6, wherein the micro switch (6) is arranged behind the movable contact piece (2), and the control pressure plate (61) of the micro switch (6) is arranged above the rotating shaft (3).

8. The circuit breaker with the switching-on/off monitoring device according to claim 2, wherein the fixing plate (5) is provided with at least two microswitches (6), different microswitches (6) are fixed on the fixing plate (5) through a connecting piece (7), and the fixing plate (5) is arranged in a sheet shape.

9. The circuit breaker with the switching-on/off monitoring device according to claim 8, wherein a plurality of through holes (54) are formed in the fixing plate (5), each microswitch (6) is arranged corresponding to one through hole (54), a mounting hole (63) is formed in each microswitch (6), and the connecting piece (7) sequentially penetrates through different microswitches (6) to be fixed on the fixing plate (5).

10. The circuit breaker with the switching-on/off monitoring device according to claim 8, wherein the fixing plate (5) is provided with a shielding portion (55), a supporting portion (56) for supporting the connecting member (7) and a fixing portion (57) for fixing the connecting member (7), the shielding portion (55) is provided with a receiving groove (58) for receiving one end of the connecting member (7), and the supporting portion (56) is arranged between different through holes (54) of the fixing plate (5).