CN219017553U

CN219017553U - Circuit breaker and tripping counting device for circuit breaker

Info

Publication number: CN219017553U
Application number: CN202220946858.7U
Authority: CN
Inventors: 郭忠贺; 朱苛娄; 许新胜; 张明; 韩亮; 鲁世浩; 李振中
Original assignee: Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Current assignee: Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2023-05-12
Anticipated expiration: 2032-04-22

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker and a tripping counting device for the circuit breaker. The tripping counting device for the circuit breaker comprises a micro switch and a release, wherein the micro switch is fixed on the outer side of the circuit breaker shell and is positioned below a through hole formed in the circuit breaker shell; still include coupling assembling, coupling assembling includes insulator spindle and insulation board, and the release is stretched out to the lower extreme of push rod, and the upper end of insulator spindle is connected in the lower extreme of push rod, and the insulator spindle wears to adorn in the through-hole that the circuit breaker casing established so that the lower extreme of insulator spindle wears out the circuit breaker casing, and the insulation board is fixed in the lower extreme of insulator spindle to trigger micro-gap switch's contact when the push rod upward movement. The release, the insulating rod and the insulating plate are mechanically connected, and the mechanical movement of the insulating plate directly triggers the contact of the micro switch, so that the micro switch has the advantages of reliable action and sensitive response. In addition, the quantity of parts is small, the micro switch is fixed on the outer side of the shell, assembly and disassembly are convenient, and production efficiency is improved.

Description

Circuit breaker and tripping counting device for circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a tripping counting device for a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying, and opening a current under normal circuit conditions, and capable of closing, carrying, and opening a circuit under abnormal circuit conditions (including short circuit conditions) within a prescribed time. When overload or short circuit occurs in the system loop, the circuit breaker can timely break the loop, and the system equipment is protected from damage, which is an important index of the circuit breaker.

There are generally two implementations of overload protection and short-circuit protection for circuit breakers: electronic and mechanical short-circuit protection is usually implemented by using an electromagnetic trip, where the electromagnetic trip only provides magnetic protection, that is, short-circuit protection, and is actually a magnetic return force, and when the current is sufficiently large, an electromagnetic force generated by overcoming a counter-force spring attracts a magnet to strike a traction rod, so as to drive an operating mechanism to act to cut off a circuit, and the structure of the electromagnetic trip is as a trip in a circuit breaker disclosed in Chinese patent publication number CN 216054517U.

However, the electromagnetic trip in the prior art can only perform circuit protection, but cannot perform statistics and trip prompt of trip times, and each time accident tripping occurs, manual statistics and recording are needed, so that the labor intensity of operation management staff is increased, errors of statistics of accident times and types are easily caused, and the normal rush-repair time of the circuit breaker is delayed.

In order to solve the above-mentioned problems, the chinese patent document with the authority bulletin number CN203300572U in the prior art discloses an under-voltage tripper, which comprises a housing, a moving rod and a micro switch, wherein the micro switch is fixed on the housing and is positioned at the top end of the moving rod, the micro switch comprises a contact piece and an indicator, when the system circuit is normal, the top end of the moving rod pushes one end of the contact piece to swing, so that the electrical loop between the contact piece and the indicator is disconnected, and the indicator is not connected; when the system circuit is abnormal, the top end of the moving rod does not touch the contact piece, and the contact piece is communicated with the electric loop of the indicator lamp so as to prompt the circuit to be abnormal.

In the prior art, as in the undervoltage release, the linear motion of the moving rod is converted into the driving force for driving the micro switch through the swing of the contact piece, on one hand, the elastic contact piece or the lever contact piece is required to be arranged in a narrow space of the shell, the structure is complex, and the contact piece is easy to damage or lose efficacy after long-term use and is difficult to find and maintain; on the other hand, the undervoltage release has only an abnormal prompt function and lacks a tripping counting function, and a counting element is connected in series in an electric loop of the contact and the indicator lamp in order to increase the tripping counting function. However, the connection and disconnection of the contact and the electric circuit of the indicator lamp are realized by pushing the contact to swing through the top end of the movable rod, and the contact is easy to damage or lose efficacy after long-time use, so that the contact and the electric circuit of the indicator lamp are disconnected, and the accuracy of tripping counting and abnormal prompting is reduced.

Disclosure of Invention

The utility model aims to provide a tripping counting device for a circuit breaker, which aims to solve the technical problems of complex structure and poor reliability of a tripping device of the circuit breaker in the prior art. The utility model aims to provide a circuit breaker so as to solve the technical problems.

In order to achieve the above purpose, the technical scheme of the tripping counting device for the circuit breaker is as follows:

the tripping counting device for the circuit breaker comprises a micro switch and a release, wherein the release is provided with a push rod extending along the up-down direction, the push rod is used for moving upwards when the circuit breaker is in short circuit, and the micro switch is provided with a contact; the micro switch is used for being fixed on the outer side of the breaker shell and positioned below a through hole formed in the breaker shell; the tripping counting device for the circuit breaker further comprises a connecting assembly, the connecting assembly comprises an insulating rod and an insulating plate, the lower end of the push rod extends out of the release, the upper end of the insulating rod is connected to the lower end of the push rod, the insulating rod is arranged in a through hole of the circuit breaker shell in a penetrating mode so that the lower end of the insulating rod penetrates out of the circuit breaker shell, the insulating plate is fixed to the lower end of the insulating rod, contacts of the micro-switch are triggered when the push rod moves upwards, and the micro-switch sends counting signals and alarm signals.

The beneficial effects are that: in the tripping counting device for the circuit breaker, when the circuit breaker is in short circuit, the push rod which moves upwards drives the insulating rod and the insulating plate to move upwards so that the insulating plate triggers the contacts of the micro switch, and the micro switch sends counting and alarm signals. The release, the insulating rod and the insulating plate are mechanically connected, and the mechanical movement of the insulating plate directly triggers the micro switch, so that the device has the advantages of reliable action and sensitive response. In addition, parts in the device are fewer, and the micro switch is fixed on the outer side of the shell, so that the assembly and the disassembly are convenient, and the production efficiency is improved.

Further improved, the tripping counting device for the circuit breaker further comprises a fixed bent plate, the fixed bent plate is provided with a vertical section and a horizontal section, the micro switch is fixed on one side of the vertical section of the fixed bent plate, which faces the insulating plate, the contact of the micro switch is located below the insulating plate, the insulating plate is used for pressing the contact of the micro switch when the circuit breaker works normally, and the horizontal plate of the fixed bent plate is used for being fixed on the outer side of the circuit breaker shell.

The beneficial effects are that: by the design, the push rod moving upwards drives the insulating plate to enable the insulating plate to be separated from the contact of the micro switch so as to trigger the micro switch to send a counting signal and an alarm signal, acting force is not required to be applied to the micro switch in the triggering process, the micro switch is triggered conveniently, and the reliability of the micro switch is improved.

Further improved, the upper part of the micro switch is provided with a roller, the axis of the roller is vertical to the vertical section of the fixed bent plate, and the outer peripheral surface of the roller forms the contact.

The beneficial effects are that: by the design, the insulating plate can elastically trigger the contact of the micro switch, and the sensitivity of the insulating plate for triggering the contact is improved.

Further improved, the outer peripheral surface of the insulating rod is provided with an umbrella skirt.

The beneficial effects are that: by the design, the creepage distance is increased, so that the tripping counting device for the circuit breaker can be suitable for a high-voltage environment.

Further improved, the upper end of the insulating rod is provided with a connecting section and a step surface around the lower end of the connecting section, the connecting section is provided with external threads, the lower end surface of the push rod is provided with an internal threaded hole matched with the threads of the connecting section, the connecting section is sleeved with a gasket, and the gasket is propped between the step surface of the connecting section and the lower end surface of the push rod.

The beneficial effects are that: the insulating rod is in threaded connection with the push rod, so that the insulating rod is convenient to install and detach; and the gasket is used for preventing looseness, so that the firmness of connection between the insulating rod and the push rod is improved.

In order to achieve the above purpose, the technical scheme of the circuit breaker of the utility model is as follows:

the circuit breaker comprises a shell, a release and a micro switch, wherein the release is arranged in the shell and provided with a push rod extending up and down, the push rod moves upwards when the circuit breaker is in short circuit, and the micro switch is provided with a contact; the shell is provided with a through hole below the release, and the micro switch is fixed on the outer side of the shell and below the through hole; the circuit breaker still includes coupling assembling, and coupling assembling includes insulator spindle and insulation board, and the release is stretched out to the lower extreme of push rod, and the upper end of insulator spindle is connected in the lower extreme of push rod, and the insulator spindle wears to adorn in the through-hole so that the lower extreme of insulator spindle wears out the casing, and the insulation board is fixed in the lower extreme of insulator spindle to trigger micro-gap switch's contact when the push rod upward movement for micro-gap switch sends count signal and alarm signal.

The beneficial effects are that: in the circuit breaker, when the circuit breaker is in short circuit, the push rod which moves upwards drives the insulating rod and the insulating plate to move upwards so that the insulating plate triggers the contacts of the micro switch, and the micro switch sends counting and alarm signals. The release, the insulating rod and the insulating plate are mechanically connected, and the mechanical movement of the insulating plate directly triggers the micro switch, so that the device has the advantages of reliable action and sensitive response. In addition, the quantity of parts is small, the micro switch is fixed on the outer side of the shell, assembly and disassembly are convenient, and production efficiency is improved.

Further improve, the circuit breaker still includes fixed bent plate, and fixed bent plate has vertical section and horizontal segment, and micro-gap switch fixes in the vertical section of fixed bent plate one side towards the insulation board, and micro-gap switch's contact is located the below of insulation board, and the insulation board compresses tightly micro-gap switch's contact at the circuit breaker normal operating time, and fixed bent plate horizontal plate is fixed in the outside of circuit breaker casing.

The beneficial effects are that: by the design, the creepage distance is increased, so that the circuit breaker can be suitable for a high-voltage environment.

Drawings

Fig. 1 is a schematic view of a partial structure of a circuit breaker of the present utility model;

FIG. 2 is an assembly view of the connection assembly and trip unit of FIG. 1;

FIG. 3 is an assembly view of the microswitch and housing of FIG. 1;

FIG. 4 is a schematic view of the structure of the insulating rod in FIG. 2;

FIG. 5 is a schematic view of the insulating plate of FIG. 2;

FIG. 6 is a schematic view of the structure of the fixed bending plate of FIG. 3;

fig. 7 is a schematic structural diagram of the micro switch in fig. 3.

In the figure: 11. a housing; 12. a trip; 13. a push rod; 14. an insulating rod; 15. an insulating plate; 16. a micro-switch; 17. fixing the bending plate; 18. a roller; 19. a gasket; 20. umbrella skirt; 21. a connection section; 22. and a through hole.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like is not excluded from a process, method, or the like that includes the element.

In the description of the present utility model, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "provided" may be interpreted broadly, and for example, an object "provided" may be a part of a body, may be separately disposed from the body, and may be connected to the body, where the connection may be a detachable connection or an undetachable connection. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.

The present utility model is described in further detail below with reference to examples.

Example 1 of the circuit breaker of the present utility model:

as shown in fig. 1, the circuit breaker of the present utility model comprises a housing 11, a micro switch 16, a release 12, a fixed bent plate 17 and a connection assembly, wherein the release 12 is installed in the housing 11, a through hole 22 is arranged below the release 12 on the housing 11, the release 12 is provided with a push rod 13 extending up and down, the push rod 13 moves up when the circuit breaker is in short circuit, and the lower end of the push rod 13 extends out of the release 12. Wherein the microswitch 16, the release 12, the fixed bent plate 17 and the connection assembly together form a trip counting device.

As shown in fig. 2, 4 and 5, the connection assembly includes an insulating rod 14 and an insulating plate 15, the upper end of the insulating rod 14 is connected to the lower end of the push rod 13, the insulating rod 14 is inserted into the through hole 22 such that the lower end of the insulating rod 14 is inserted out of the housing 11, and the insulating plate 15 is fixed to the lower end of the insulating rod 14. Specifically, the upper end of the insulating rod 14 is provided with a connecting section 21 and a step surface around the lower end of the connecting section 21, the connecting section 21 is provided with external threads, and the lower end of the push rod 13 is provided with an internal threaded hole matched with the connecting section 21, so that the upper end of the insulating rod 14 is fixedly connected to the lower end of the push rod 13. And, the connecting section 21 is sleeved with a gasket 19, and the gasket 19 is propped between the step surface of the connecting section 21 and the lower end surface of the push rod 13. The insulating plate 15 is provided with a through hole, the lower end of the insulating rod 14 is provided with an internal threaded hole, and a bolt passes through the through hole to be in threaded fit with the internal threaded hole so as to fix the insulating plate 15 at the lower end of the insulating rod 14.

As shown in fig. 2, an umbrella skirt 20 is provided on the outer circumferential surface of the insulating rod 14 to increase the creepage distance so that the circuit breaker can be adapted to a high voltage environment. In other embodiments, the umbrella skirt 20 may be omitted.

As shown in fig. 3, 6 and 7, the micro switch 16 is fixed to the outside of the housing 11 by a fixing bent plate 17 and is located below the through hole 22. The fixed bending plate 17 comprises a vertical section and a horizontal section, two light holes are formed in the horizontal section of the fixed bending plate 17, threaded holes matched with the two light holes are formed in the shell 11, and bolts penetrate through the light holes to be in threaded fit with the threaded holes so as to fix the fixed bending plate 17 on the outer side of the shell 11. The vertical section of the fixed bent plate 17 is provided with two connecting holes, the micro switch 16 is provided with threaded through holes matched with the two connecting holes, and bolts penetrate through the connecting holes and are in threaded fit with the threaded through holes so as to fix the micro switch 16 on one side of the vertical section of the fixed bent plate 17 facing the insulating plate 15, and the insulating plate 15 is positioned above the micro switch 16.

As shown in fig. 3 and 7, the upper part of the micro switch 16 is provided with a roller 18, the axis of the roller 18 is perpendicular to the vertical section of the fixed bent plate 17, the insulating plate 15 is pressed on the peripheral surface of the roller 18 when the circuit breaker works normally, and when the circuit breaker trips in a short circuit, the push rod 13 moving upwards drives the insulating rod 14 and the insulating plate 15 to move upwards, so that the insulating plate 15 is separated from the roller 18, and the micro switch 16 sends out a trip counting signal and sends out an alarm signal such as a beeping sound or a short message prompt to the outside. In this embodiment, the outer peripheral surface of the roller 18 forms a contact of the micro switch 16, and the contact of the micro switch 16 is used by the insulating plate 15 to trigger the micro switch 16.

In the circuit breaker, when the circuit breaker is in short circuit, the push rod 13 moving upwards can drive the insulating rod 14 and the insulating plate 15 to move upwards to trigger the contacts of the micro switch 16, so that the micro switch 16 sends a tripping counting signal and an alarm signal. The release 12, the insulating rod 14 and the insulating plate 15 are mechanically connected, and the mechanical movement of the insulating plate 15 directly triggers the micro switch 16, so that the device has the advantages of reliable action and sensitive response. Parts in the device are fewer, and the micro switch 16 is fixed on the outer side of the shell 11, so that the assembly and the disassembly are convenient, and the production efficiency is improved.

Example 2 of the circuit breaker of the present utility model:

the difference between this embodiment and embodiment 1 is that: in embodiment 1, the micro switch 16 is fixed on the side of the vertical section of the fixed bending plate 17 facing the insulating plate 15, the micro switch 16 is located below the insulating plate 15, and the insulating plate 15 is pressed against the contact of the micro switch 16 when the circuit breaker works normally. In this embodiment, the micro switch 16 is located above the insulating board 15, a contact is provided below the micro switch 16, when the circuit breaker works normally, the insulating board 15 is separated from the contact of the micro switch 16, and when the circuit breaker is in short circuit, the push rod 13 drives the insulating board 15 to move upwards, so that the insulating board 15 is pressed on the contact of the micro switch 16 upwards. In other embodiments, the fixing bent plate 17 can be omitted, the micro switch 16 is fixed on the outer side of the shell 11 of the circuit breaker through bolting, and the insulating plate 15 is pressed on the contact of the micro switch 16 when the circuit breaker works normally.

Example 3 of the circuit breaker of the present utility model:

the difference between this embodiment and embodiment 1 is that: in embodiment 1, a roller 18 is provided on the upper portion of the microswitch 16, the axis of the roller 18 is perpendicular to the vertical section of the fixed bent plate 17, and the outer peripheral surface of the roller 18 constitutes a contact. In this embodiment, the roller 18 is omitted, and the upper end surface of the micro switch 16 is the contact.

Example 4 of the circuit breaker of the utility model:

the difference between this embodiment and embodiment 1 is that: in embodiment 1, the upper end of the insulating rod 14 has a connecting section 21, the connecting section 21 is provided with external threads, and the lower end of the push rod 13 is provided with an internal threaded hole in threaded connection with the external threaded connecting section 21. In this embodiment, the connection section 21 is a polished rod, the lower end of the push rod 13 is provided with a jack adapted to the connection section 21, and the connection rod is inserted into the jack and fixed by glue filling.

Embodiments of trip counting assembly for circuit breaker of the present utility model: the structure of the trip counting device for a circuit breaker is the same as that of any one of embodiments 1 to 4 of the circuit breaker described above, and will not be described in detail here.

It should be noted that the above description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The tripping counting device for the circuit breaker comprises a micro switch (16) and a release (12), wherein the release (12) is provided with a push rod (13) extending along the up-down direction, the push rod (13) is used for moving upwards when the circuit breaker is in short circuit, and the micro switch (16) is provided with a contact; the micro switch is characterized in that the micro switch (16) is fixed on the outer side of the breaker shell (11) and is positioned below a through hole (22) arranged on the breaker shell (11); the tripping counting device for the circuit breaker further comprises a connecting assembly, the connecting assembly comprises an insulating rod (14) and an insulating plate (15), the lower end of the push rod (13) extends out of the release (12), the upper end of the insulating rod (14) is connected to the lower end of the push rod (13), the insulating rod (14) is arranged in a through hole (22) formed in the circuit breaker shell (11) in a penetrating mode, the lower end of the insulating rod (14) penetrates out of the circuit breaker shell (11), the insulating plate (15) is fixed to the lower end of the insulating rod (14), and contacts of the micro switch (16) are triggered when the push rod (13) moves upwards, so that the micro switch (16) sends counting signals and alarm signals.

2. The trip counting device for circuit breakers according to claim 1, characterized in that the trip counting device for circuit breakers further comprises a fixed bent plate (17), the fixed bent plate (17) is provided with a vertical section and a horizontal section, the micro switch (16) is fixed on one side of the vertical section of the fixed bent plate (17) facing the insulating plate (15), the contacts of the micro switch (16) are located below the insulating plate (15), the insulating plate (15) is used for pressing the contacts of the micro switch (16) when the circuit breaker is in normal operation, and the horizontal plate of the fixed bent plate (17) is used for being fixed on the outer side of the circuit breaker shell (11).

3. Trip counting device for circuit breaker according to claim 2, characterized in that the upper part of the microswitch (16) is provided with a roller (18), the axis of the roller (18) is perpendicular to the vertical section of the fixed bent plate (17), the peripheral surface of the roller (18) forming the contact.

4. A trip counting device for circuit breakers according to claim 1 or 2 or 3, characterized in that an umbrella skirt (20) is provided on the outer peripheral surface of the insulating rod (14).

5. A trip counting device for a circuit breaker according to claim 1, 2 or 3, characterized in that the upper end of the insulating rod (14) is provided with a connecting section (21) and a step surface around the lower end of the connecting section (21), the connecting section (21) is provided with external threads, the lower end surface of the push rod (13) is provided with an internal thread hole in threaded fit with the connecting section (21), the connecting section (21) is sleeved with a gasket (19), and the gasket (19) is propped between the step surface of the connecting section (21) and the lower end surface of the push rod (13).

6. The circuit breaker comprises a shell (11), a release (12) and a micro switch (16), wherein the release (12) is arranged in the shell (11), the release (12) is provided with a push rod (13) which extends up and down, the push rod (13) moves upwards when the circuit breaker is in short circuit, and the micro switch (16) is provided with contacts; the automatic tripping device is characterized in that a through hole (22) is formed in the shell (11) below the tripping device (12), and the micro switch (16) is fixed on the outer side of the shell (11) and is positioned below the through hole (22); the circuit breaker still includes coupling assembling, coupling assembling includes insulator spindle (14) and insulation board (15), release (12) are stretched out to the lower extreme of push rod (13), the upper end of insulator spindle (14) is connected in the lower extreme of push rod (13), install in through-hole (22) in order to make the lower extreme of insulator spindle (14) wear out casing (11), the lower extreme at insulator spindle (14) is fixed in insulation board (15), in order to trigger the contact of micro-gap switch (16) when push rod (13) upward movement, make micro-gap switch (16) send count signal and alarm signal.

7. The circuit breaker according to claim 6, characterized in that the circuit breaker further comprises a fixed bent plate (17), the fixed bent plate (17) is provided with a vertical section and a horizontal section, the micro switch (16) is fixed on one side of the fixed bent plate (17) facing the insulating plate (15), the contact of the micro switch (16) is located below the insulating plate (15), the insulating plate (15) presses the contact when the circuit breaker is in normal operation, and the horizontal plate of the fixed bent plate (17) is fixed on the outer side of the shell (11).

8. The circuit breaker according to claim 7, characterized in that the upper part of the microswitch (16) is provided with a roller (18), the axis of the roller (18) being perpendicular to the vertical section of the fixed bent plate (17), the outer peripheral surface of the roller (18) forming the contact.

9. Circuit breaker according to claim 6 or 7 or 8, characterized in that the insulating rod (14) is provided with sheds (20) on its outer circumference.

10. The circuit breaker according to claim 6, 7 or 8, wherein the upper end of the insulating rod (14) is provided with a connecting section (21) and a step surface around the lower end of the connecting section (21), the connecting section (21) is provided with external threads, the lower end surface of the push rod (13) is provided with an internal threaded hole in threaded fit with the connecting section (21), the connecting section (21) is sleeved with a gasket (19), and the gasket (19) is propped between the step surface of the connecting section (21) and the lower end surface of the push rod (13).