CN218123323U - Circuit breaker and control mechanism - Google Patents

Abstract

The utility model discloses a circuit breaker and control mechanism, wherein the circuit breaker includes the base, electrically conductive piece and temperature control assembly, and the temperature control assembly is including the temperature detect switch who is used for responding to electrically conductive piece temperature and be used for installing on the base, and is used for the elasticity locating part that compresses tightly temperature detect switch and electrically conductive piece. When the circuit breaker works, when the temperature of the conductive piece abnormally rises, the on-off state of the temperature control switch is changed. The temperature control switch can be in signal connection with the alarm device; and/or the temperature control switch can be connected with the electronic release, and when the electronic release is electrified, the electronic release drives the breaker to open. When the breaker works, when the temperature of the conductive piece rises abnormally, the on-off state of the temperature control switch is changed, and then the opening of the breaker is controlled through the alarm device and/or the electronic release. The application provides a safety in utilization of circuit breaker improves.

Description

Circuit breaker and control mechanism

Technical Field

The utility model relates to the technical field of switches, in particular to circuit breaker. The utility model discloses still relate to a control mechanism including foretell circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time.

For example, molded case circuit breakers are used in large quantities as important components in low voltage power distribution systems, but in practical use of users, the circuit breaker may be burnt out, but the circuit breaker protection unit does not operate. The reason for this is that the connection bar or cable is not used and installed in the connection position of the circuit breaker in a standard way, for example, the material and specification of the connection bar and cable do not meet the actual use requirement, the circuit breaker is heated by long-term electrification, the aging of the circuit breaker is accelerated, the insulation of the product is damaged, and even surrounding combustible materials are ignited. Another common reason is that the connection bar or cable is not fastened in place, so that the contact resistance between the connection bar or cable and the circuit breaker is abnormally large, and finally, the local temperature is seriously too high, thereby causing a safety accident and causing low use safety of the circuit breaker.

Therefore, how to improve the use safety of the circuit breaker is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circuit breaker, this circuit breaker's safety in utilization improves. Another object of the present invention is to provide a control mechanism including the above circuit breaker.

In order to achieve the above object, the present invention provides a circuit breaker, including a base, a conductive member and a temperature control assembly, wherein the temperature control assembly includes a temperature control switch for sensing a temperature of the conductive member and an elastic limit member for being mounted on the base and for pressing the temperature control switch and the conductive member;

the temperature control switch can be in signal connection with an alarm device; and/or the temperature control switch can be connected with an electronic release, and when the electronic release is electrified, the electronic release drives the breaker to open.

Optionally, in the above circuit breaker, a placing groove is provided on the base, and the elastic limiting member is located in the placing groove.

Optionally, in the above circuit breaker, the temperature controlled switch is located in the placing groove, the base is provided with a wire through hole communicated with the placing groove, and a wire connected to the temperature controlled switch is output through the wire through hole.

Optionally, in the circuit breaker, a wiring slot through which the wire passes is formed in the base.

Optionally, in the above circuit breaker, the elastic limiting member includes a spring piece that is disposed in a bending manner, the spring piece abuts against the temperature controlled switch, and the elastic limiting member has at least one abutting position with the temperature controlled switch.

Optionally, in the circuit breaker, the conductive component includes a fixed contact and an incoming/outgoing line bank, and the temperature control assemblies are respectively disposed at the fixed contact and the incoming/outgoing line bank.

Optionally, in the above circuit breaker, the temperature control switch includes a switch body and an insulating housing sleeved outside the switch body, and the elastic limiting member abuts against the insulating housing.

A control mechanism comprises a circuit breaker, wherein the circuit breaker is any one of the circuit breaker and further comprises an alarm device connected with a temperature control switch, and the alarm device is in signal connection with all the temperature control switches.

Optionally, in the above circuit breaker, an electronic release connected to the circuit breaker is further included.

A control mechanism comprises a circuit breaker, wherein the circuit breaker is any one of the circuit breaker and further comprises an electronic release connected with a temperature control switch, the electronic release is connected with all the temperature control switches in series, when the temperature sensed by the temperature control switch exceeds a preset value, the temperature control switch is switched on, the electronic release is electrified, and the electronic release drives the circuit breaker to open.

In the technical scheme, the utility model provides a circuit breaker includes the base, electrically conductive piece and temperature control assembly, and the temperature control assembly is including the temperature detect switch who is used for responding to electrically conductive piece temperature and be used for installing on the base, and is used for the elasticity locating part that compresses tightly temperature detect switch and electrically conductive piece. When the equipment, with temperature detect switch and the laminating of electrically conductive piece, elasticity locating part compresses tightly temperature detect switch for temperature detect switch compresses tightly electrically conductive piece. The temperature control switch can be in signal connection with the alarm device; and/or the temperature control switch can be connected with the electronic release, and when the electronic release is electrified, the electronic release drives the breaker to open. When the breaker works, when the temperature of the conductive piece rises abnormally, the on-off state of the temperature control switch is changed, and then the opening of the breaker is controlled through the alarm device and/or the electronic release.

Can know through the aforesaid description, in the circuit breaker that this application provided, compress tightly temperature detect switch on electrically conductive piece through elasticity locating part, make temperature detect switch in time respond to electrically conductive piece temperature, and then when the temperature surpassed the default, learn the inside temperature anomaly of circuit breaker through the temperature detect switch change, and then realize that the signal change structural status of external connection changes, make the condition that in time learns the circuit breaker temperature and rise, and then control the circuit breaker separating brake through alarm device and/or electronic release, be convenient for in time operate on next step, and then the safety in utilization of circuit breaker improves.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a cross-sectional view of a circuit breaker according to an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a of the circuit breaker according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a temperature controlled switch according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a base according to an embodiment of the present invention;

fig. 5 is a diagram illustrating a position of a wiring groove on a base according to an embodiment of the present invention;

fig. 6 is a circuit configuration diagram of a temperature controlled switch and an electronic trip provided in the embodiment of the present invention.

FIG. 7 is a circuit diagram of the temperature controlled switch according to the embodiment of the present invention for connecting with an alarm device

Wherein in FIGS. 1-6: 1-static contact, 2-incoming and outgoing line bank, 3-elastic limiting piece, 4-temperature control switch, 5-elastic limiting piece, 6-temperature control switch, 7-insulating shell, 8-conducting wire, 9-placing groove, 10-conducting wire through hole, 11-conducting wire through hole, 12-placing groove, 13-wiring groove and 14-electronic release.

Detailed Description

The core of the utility model is to provide a circuit breaker, the safety in utilization of this circuit breaker improves. The utility model discloses a another core provides a control mechanism including above-mentioned circuit breaker.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

Please refer to fig. 1 to fig. 7.

In a specific implementation manner, the utility model discloses the circuit breaker that specific embodiment provided includes base, electrically conductive piece and temperature control assembly, and the temperature control assembly is including being used for responding to the temperature control switch 4, 6 of electrically conductive piece temperature and being used for installing on the base, and is used for the elasticity locating part 3, 5 that compresses tightly temperature control switch 4, 6 and electrically conductive piece.

The elastic limiting pieces 3 and 5 can be spring pieces. Specifically, the elastic limiting members 3 and 5 are corrugated plate spring pieces, preferably, the elastic limiting members 3 and 5 have at least one abutting position with the temperature controlled switches 4 and 6, and more preferably, the elastic limiting members 3 and 5 have at least two abutting positions with the temperature controlled switches 4 and 6. Alternatively, the elastic stoppers 3 and 5 may be spring washers. When the circuit breaker is in an assembled state, the elastic limiting pieces 3 and 5 are in a compressed state, so that the temperature control switches 4 and 6 can better detect the temperature of the conductive pieces.

Wherein the elastic limiting pieces 3 and 5 can also be springs.

Specifically, the circuit breaker can be a molded case circuit breaker, and can also be other types of circuit breakers.

Considering that a plurality of conductive pieces for conducting heat are arranged in the circuit breaker, preferably, the temperature control assembly is provided in plurality, and all the temperature control switches are arranged in parallel.

In order to improve the connection stability, the elastic limiting members 3 and 5 can be fixedly connected with the temperature control assembly and/or the base.

In view of the influence of high temperature on the elastic limiting members 3, 5, the elastic limiting members 3, 5 are preferably metal members, and may be elastic steel plates disposed in a bending manner. When the elastic limiting pieces 3 and 5 are metal pieces, the elastic limiting pieces 3 and 5 are insulated from the electric connecting pieces of the temperature control switches 4 and 6.

When assembling, with temperature detect switch 4, 6 and the laminating of electrically conductive piece, elasticity locating part 3, 5 compress tightly temperature detect switch 4, 6 for temperature detect switch 4, 6 compress tightly electrically conductive piece. When the circuit breaker works, when the temperature of the conductive piece rises abnormally, the on-off states of the temperature control switches 4 and 6 are changed, and then the signal change structural state is changed. Specifically, the temperature control switches 4 and 6 can be in signal connection with the alarm device, specifically, the temperature control switches 4 and 6 are electrically connected with the alarm device, or the temperature control switches 4 and 6 are in wireless signal connection with the alarm device, when the temperature control switches are switched on and off 4 and 6, signals are sent to the controller of the alarm device through the wireless signal structure, and the controller receives the signals to control the alarm device to alarm.

The temperature controlled switches 4 and 6 can also be connected with an electronic release, and when the electronic release is electrified, the electronic release drives the breaker to open.

Specifically, the circuit breaker can be a one-pole circuit breaker or a multi-pole circuit breaker, specifically can be a two-pole circuit breaker, a three-pole circuit breaker or a four-pole circuit breaker, specifically, can all be equipped with temperature control assembly on each pole of circuit breaker. The temperature control assembly can be used on any side of the wire inlet and outlet end of the circuit breaker.

Can know through the aforesaid description, in the circuit breaker that this application embodiment provided, through elasticity locating part 3, 5 with temperature detect switch 4, 6 compress tightly on electrically conductive piece, make temperature detect switch 4, 6 in time respond to electrically conductive piece temperature, and then when the temperature surpassed the default, learn the inside temperature anomaly of circuit breaker through the temperature detect switch change, and then realize that the signal change structural state of external connection changes, make the condition of in time learning the circuit breaker temperature rise, be convenient for in time operate on next step, and then the safety in utilization of circuit breaker improves.

In order to improve the installation stability, the base is preferably provided with placement grooves 9 and 12, and the elastic limiting members 3 and 5 are located in the placement grooves 9 and 12. Specifically, both ends of the elastic stoppers 3 and 5 may abut against both side walls of the placement grooves 9 and 12. At this time, the temperature controlled switches 4 and 6 may be located outside the placing grooves 9 and 12, and one sides of the elastic limiting members 3 and 5 away from the bottoms of the placing grooves 9 and 12 are abutted to the temperature controlled switches.

Preferably, the conductive part comprises a static contact 1 and an incoming and outgoing line connecting bar 2, and a temperature control component is arranged at the position of the static contact 1.

Because the business turn over line terminal row 2 wires at the wiring position are not normal, perhaps business turn over line terminal row 2 positions are used for locking the retaining member of wire not hard up, lead to 2 position temperature increase of metal wire terminal row, and preferred, business turn over line terminal row 2 positions are equipped with temperature control assembly. Through setting up temperature control assembly in business turn over line row 2 positions, provide an alarm signal when the 2 unusual high-temperature in business turn over line row of wiring of circuit breaker, remind the user to overhaul the processing, prevent that the long-term high temperature operation of row of wiring of circuit breaker from leading to damaging and unable normal work even causes the power distribution cabinet to seriously destroy and even burn out, guaranteed power supply continuity type and power consumption safety.

Wherein, temperature detect switch 4, 6 can be located the standing groove 9, 12 outsides, and in order to improve overall stability, preferably, temperature detect switch 4, 6 are located standing groove 9, 12, are equipped with the wire through- hole 10, 11 that communicate standing groove 9, 12 on the base, and the wire 8 is exported through wire through- hole 10, 11 with temperature detect switch 4, 6 connecting wire.

Further, offer the trough 13 that supplies wire 8 to pass through on the base, it is specific, the number and the position of trough 13 are according to actual need and decide, and this application does not do specifically and restricts. In order to facilitate the arrangement of the wires 8, the wires 8 are preferably flexible wires, and in particular, the wires 8 are attached in the wiring grooves 13. Specifically, two wires 8 are provided for each temperature controlled switch 4, 6.

In a specific embodiment, the temperature controlled switches 4 and 6 include a switch body and an insulating casing 7 sleeved outside the switch body, the elastic limiting members 3 and 5 are abutted against the outer wall of the insulating casing 7, and specifically, the wires 8 connected with the temperature controlled switches 4 and 6 pass through the side hole bodies of the insulating casing 7 to be connected with the outside. Insulating casing 7 laminating is on electrically conductive surface, and inside the switch body in temperature detect switch 4, 6 was conducted by insulating casing 7 to the heat, and inside senses that switch body state changes after the certain temperature value, and is concrete, and the switch body can become closed state by normally opening, perhaps becomes normally open state by the normally closed.

The application provides a control mechanism includes circuit breaker and alarm device, and wherein the circuit breaker is any kind of above-mentioned circuit breaker, and the aforesaid has narrated the concrete structure about the circuit breaker, and this application includes above-mentioned circuit breaker, has above-mentioned technological effect equally. The temperature control switches 4 and 6 are in signal connection with an alarm device, and specifically, the alarm device is connected with the temperature control switches 4 and 6 in series. The temperature control switches 4 and 6 are used for switching the on-off states of the temperature control switches 4 and 6 from normal open to closed when the temperature of the conductive piece rises abnormally, and the state of a circuit connected with the temperature control switches is changed, namely, the abnormal alarming function of the alarming device is realized by connecting a power supply and an alarm in series or inputting the power supply and the alarm into a console.

Certainly, an electronic release can be installed in the circuit breaker, and when the staff receives the alarm signal, the electronic release is operated manually to work, so that the circuit breaker is controlled to be opened through the electronic release.

As shown in fig. 6, after the temperature controlled switch K1, the temperature controlled switch K2, the temperature controlled switch K3, the temperature controlled switch K4, the temperature controlled switch K5 and the temperature controlled switch K6 are connected in parallel, when the temperature of any wiring part is abnormally high, the temperature controlled switch below the conductive piece is changed from a normally open state to a closed state, namely, the circuit of the temperature controlled switch is changed, and related personnel are reminded to overhaul and maintain the circuit breaker.

Through the design, the household power supply system can be safer for users, can timely discover and eliminate abnormity, guarantees the continuity of power supply, reduces the influence on life production caused by power failure, and can also avoid serious safety accidents.

The application provides a control mechanism includes circuit breaker and electronic release 14, and wherein the circuit breaker is any kind of circuit breaker, and the aforesaid has been mentioned about the concrete structure of circuit breaker, and this application includes above-mentioned circuit breaker, has above-mentioned technological effect equally. The electronic release is connected with the temperature control switches 4 and 6, for example, when the temperature at the incoming and outgoing line connecting bar 2 rises abnormally, the on-off states of the temperature control switches 4 and 6 are changed from normally open to closed, so that the loop of the electronic release 14 is conducted, and the electronic release 14 acts to trip and power off the circuit breaker. The long-term high-temperature operation of the wiring bar of the circuit breaker is prevented from causing damage and the circuit breaker cannot normally work, and fire accidents caused by high-temperature burning of the circuit breaker, a cable and a distribution cabinet are avoided.

Preferably, as shown in fig. 6, the electronic release 14 is connected in series with all the temperature-controlled switches (the temperature-controlled switch K1, the temperature-controlled switch K2, the temperature-controlled switch K3, the temperature-controlled switch K4, the temperature-controlled switch K5, and the temperature-controlled switch K6). Specifically, when the temperature of any connecting wire is abnormally too high, the temperature control switches 4 and 6 corresponding to the lower surfaces of the conductive pieces are changed from a normally open state to a closed state, the whole conductive loop is conducted, the electronic release 14 is electrified to act, the electronic release 14 impacts a traction rod of the circuit breaker, and the traction rod is subjected to tripping operation, so that the circuit breaker is opened, the purposes of power failure and load removal are achieved, further damage is prevented, and the power consumption of a user can be safer through the design. Because the circuit breaker which operates abnormally is automatically tripped and powered off, serious power utilization accidents are avoided.

The anti-interference device has the characteristics of simple and reliable structure, strong anti-interference capability, real-time monitoring and automatic protection tripping, and is convenient for wide popularization.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A circuit breaker is characterized by comprising a base, a conductive piece and a temperature control assembly, wherein the temperature control assembly comprises temperature control switches (4) and (6) used for sensing the temperature of the conductive piece and elastic limit parts (3) and (5) used for being installed on the base and used for pressing the temperature control switches (4) and (6) and the conductive piece tightly;

the temperature control switch can be in signal connection with an alarm device; and/or the temperature control switch can be connected with an electronic release, and when the electronic release (14) is electrified, the electronic release (14) drives the breaker to open.

2. The circuit breaker according to claim 1, wherein the base is provided with a placement groove (9), (12), and the elastic stoppers (3), (5) are located in the placement grooves (9), (12).

3. The circuit breaker according to claim 2, wherein the thermal switches (4) and (6) are located in the placement grooves (9) and (12), the base is provided with lead through holes (10) and (11) communicated with the placement grooves (9) and (12), and leads (8) connected with the thermal switches (4) and (6) are output through the lead through holes (10) and (11).

4. The circuit breaker according to claim 3, characterized in that the base is provided with a wiring duct (13) for the passage of the conductor (8).

5. The circuit breaker according to claim 1, wherein the elastic limiting member (3), (5) comprises a spring piece which is arranged in a curved manner and abuts against the thermostatic switch, and the elastic limiting member (3), (5) and the thermostatic switch (4), (6) have at least one abutting position.

6. The circuit breaker according to claim 1, wherein the conductive member comprises a fixed contact (1) and a wire inlet and outlet line bank (2), and the temperature control components are respectively disposed at positions of the fixed contact (1) and the wire inlet and outlet line bank (2).

7. The circuit breaker according to claim 1, wherein the temperature controlled switch (4), (6) comprises a switch body and an insulating housing (7) sleeved outside the switch body, and the elastic limiting members (3), (5) are abutted against the insulating housing (7).

8. A control mechanism comprising a circuit breaker, characterized in that the circuit breaker is a circuit breaker according to any one of claims 1-7, and further comprising an alarm device connected to the temperature controlled switches (4), (6), the alarm device being in signal connection with all the temperature controlled switches (4), (6).

9. The control mechanism of claim 8, further comprising an electronic trip unit (14) connected to the circuit breaker.

10. A control mechanism, comprising a circuit breaker, characterized in that the circuit breaker is the circuit breaker according to any one of claims 1-8, and further comprising an electronic release (14) connected to the temperature controlled switches (4), (6), wherein the electronic release (14) is connected in series with all the temperature controlled switches (4), (6), when the temperatures sensed by the temperature controlled switches (4), (6) exceed a preset value, the temperature controlled switches (4), (6) are turned on, the electronic release (14) is powered on, and the electronic release (14) drives the circuit breaker to open.

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