Circuit breaker

Abstract

A circuit breaker comprises a shell, a connector is installed in a cavity of the shell, one end of a temperature sensor is installed on the connector, and temperature monitoring of the connector is achieved. The connector comprises a shell and a wiring terminal, a mounting hole is formed in the shell, and the sensing end of the temperature sensor extends into the shell from the mounting hole. According to the circuit breaker, the temperature sensor is directly installed on the connector to monitor the temperature of the connector and output the temperature, and when the temperature rise of the connector is too high, a cooling measure is taken, so that the burning phenomenon caused by the too high temperature of the connector is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of low-voltage electrical apparatus, specifically speaking is related to a circuit breaker. BACKGROUND

[0002] A circuit breaker is an electrical protection device installed between a power source and a load unit to protect the load unit such as a motor, a transformer, and a power transmission line from abnormal current (i.e., a large current caused by, for example, a short circuit and a ground fault) generated in a circuit such as a power transmission / distribution line and a private power transformation facility. In addition, the circuit breaker insulated by insulation at the circuit breaker can manually open or close a power transmission line in a normal use condition, remotely open or close the power transmission line using an electrical operating unit outside a metal container, and automatically break the power transmission line to protect a power facility and a load unit at the time of overcurrent and a short circuit. When the temperature of an air circuit breaker increases, the circuit breaker can be erroneously operated due to damage caused by the increased temperature. Therefore, it is necessary to monitor the temperature inside the air circuit breaker in real time to prevent damage caused by abnormal heating. As shown in the accompanying drawings, in particular, a connector in the circuit breaker is sensitive to temperature, and at a high temperature, not only performance is reduced, but also a fire occurs in a serious case. Figure 1

[0003] Chinese patent ZL202122409083.8 discloses a circuit breaker, which comprises a shell with an inner cavity, a button mechanism, an operating mechanism, an input terminal, a wiring terminal, and a circuit board arranged in the inner cavity. The button mechanism drives the operating mechanism to close or open. The input terminal and the wiring terminal are connected with the operating mechanism, respectively. A temperature sensor is arranged on the surface of the circuit board. The temperature sensor is located between the wiring terminal and the operating mechanism, and is used to acquire temperature information of the wiring terminal. Obviously, the circuit breaker can only monitor the temperature rise between the wiring terminal and the operating mechanism, and cannot monitor the real-time temperature of the connector, so that the temperature rise of the connector is still unknown, and a fire accident of the connector occurs. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at the defect that the connector in the existing circuit breaker is sensitive to temperature, and at a high temperature, not only performance is reduced, but also a fire occurs in a serious case, and provides a circuit breaker. A temperature sensor is directly installed on the connector to monitor the temperature of the connector, and the temperature is output. When the temperature rise of the connector is too high, a cooling measure is taken, and a burning phenomenon caused by the high temperature of the connector is avoided.

[0005] TECHNICAL SCHEME

[0006] ​In order to achieve the above technical purposes, the utility model provides a circuit breaker, it includes the shell, the connector is installed in the cavity of shell, its characterized in being that: temperature sensor one end is installed on the connector, realizes the temperature monitoring of the connector,

[0007] The connector includes a shell and a terminal, the shell is provided with a mounting hole, and the sensing end of the temperature sensor extends into the shell from the mounting hole.

[0008] In one embodiment, the terminal is fixedly installed on both sides of the shell, and a partition plate one is arranged between the terminal connecting parts on both sides of the shell, and the sensing end of the temperature sensor extends into the slot hole on the partition plate one from the mounting hole.

[0009] In one embodiment, the sensing end of the temperature sensor is connected to the signal output terminal through a wire, and the signal output terminal is located on the other end side of the circuit breaker shell length direction opposite to the button.

[0010] In one embodiment, the other end side of the circuit breaker shell length direction opposite to the button protrudes an outer cavity in the direction of the plug-in board, and the signal output terminal is located in the cavity of the outer cavity.

[0011] In one embodiment, the outer cavity is located between the two plug-in boards in the height direction of the circuit breaker.

[0012] In one embodiment, the circuit breaker is provided with a partition plate two between the conductive row and the operating mechanism, and a boss is arranged on the partition plate two close to the connector, and the boss abuts against the temperature sensor to prevent the sensing end of the temperature sensor from falling off from the mounting hole.

[0013] In one embodiment, the boss is arranged on the shell and / or the partition plate two close to the connector.

[0014] In one embodiment, buckles are arranged on the partition plate two and / or the shell, and the wire is constrained in position by the buckles to be arranged along the length direction of the circuit breaker.

[0015] In one embodiment, the wire is arranged along the bottom of the circuit breaker shell.

[0016] Preferably, the temperature sensor is an NTC temperature sensor.

[0017] Advantages

[0018] The utility model provides a circuit breaker, it includes the shell, the connector is installed in the cavity of shell, temperature sensor one end is installed on the connector, realizes the temperature monitoring of connector, the connector includes the casing and the terminal, be provided with the mounting hole on the casing, the inductive end of temperature sensor is from the mounting hole and is inserted into the casing. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will be briefly introduced the drawing needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0020] Figure Figure 1 It is the schematic diagram of connector installation in the circuit breaker in prior art;

[0021] Figure Figure 2a It is the schematic diagram of temperature sensor installation in the embodiment of the utility model Figure 1 ;

[0022] Figure Figure 2b It is the schematic diagram of temperature sensor installation in the embodiment of the utility model two;

[0023] Figure Figure 3 It is the schematic diagram of connector structure in the embodiment of the utility model;

[0024] Figure Figure 4 It is the schematic diagram of slot hole position in the connector in the embodiment of the utility model;

[0025] Figure Figure 5 It is the schematic diagram of temperature sensor structure in the embodiment of the utility model;

[0026] Figure Figure 6 It is the schematic diagram of temperature sensor installation in the circuit breaker in the embodiment of the utility model;

[0027] Figure Figure 7 It is the schematic diagram of temperature sensor installation in the circuit breaker in the embodiment of the utility model; DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely explain the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should fall into the scope of the present application.

[0029] It should be noted that when a component is referred to as being "on" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only orientation of the embodiments.

[0030] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be interpreted as indicating or implying relative importance or a specific number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0031] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature to the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0032] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by a person skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0033] Embodiments

[0034] The connector in the existing circuit breaker is sensitive to temperature. When the temperature is high, it will not only result in performance reduction, but also cause fire in serious cases. In order to solve this problem, as shown in the accompanying Figure 2a and 2b , the embodiment provides a circuit breaker, which comprises a shell 1, a connector 2 arranged in the cavity of the shell 1, and a temperature sensor 3 arranged at one end of the connector 2 to monitor the temperature of the connector 2.

[0035] As shown in the accompanying Figure 3 , specifically, the connector 2 comprises a shell 201 and a terminal 202, the shell 201 is provided with a mounting hole 201a, and the sensing end 301 of the temperature sensor 3 extends into the shell 201 from the mounting hole 201a. Further, as shown in the accompanying Figure 4 , the terminal 202 is fixedly arranged on both sides of the shell 201, and a partition plate 1 203 is arranged between the terminal 202 of the terminal 202 on both sides of the shell 201. The sensing end 301 of the temperature sensor 3 extends into the slot hole 203a on the partition plate 1 203 from the mounting hole 201a.

[0036] In the embodiment, as shown in the accompanying Figure 5 , the temperature sensor 3 is an NTC temperature sensor. As shown in the accompanying Figure 5 , the sensing end 301 of the temperature sensor 3 is connected to the signal output terminal 302 through the wire 4, and the signal output terminal 302 is located on the other end side of the circuit breaker shell 1 length direction opposite to the button 5. Further, as shown in the accompanying Figure 6 , the other end side of the shell 1 length direction opposite to the button 5 protrudes to the direction of the plug-in board 6, and the signal output terminal 302 is located in the chamber of the outer cavity 101. In the embodiment, the outer cavity 101 is located between the two plug-in boards 6 in the height direction of the circuit breaker.

[0037] As shown in the accompanying Figure 2a and 2b , a partition plate 2 9 is arranged between the conductive row 7 and the operating mechanism 8 of the circuit breaker, and a boss 901 is arranged on the partition plate 2 9 close to the connector 2. The boss 901 abuts against the temperature sensor 3 to prevent the sensing end 301 of the temperature sensor 3 from falling out of the mounting hole 201a. Wherein, the boss 901 is arranged on the shell 1 and / or the partition plate 2 9 close to the connector 2. At the same time, as shown in the accompanying Figure 7 , buckles 902 are arranged on the partition plate 2 9 and / or the shell 1, and the wire 4 is constrained in position by the buckles 902 to be arranged along the length direction of the circuit breaker. The wire 4 is arranged along the bottom of the circuit breaker shell 1.

[0038] The circuit breaker comprises a housing 1, a connector 2 arranged in a cavity of the housing 1, and a temperature sensor 3 arranged at one end of the connector 2 to monitor the temperature of the connector 2. The circuit breaker directly installs the temperature sensor on the connector to monitor the temperature of the connector and output the temperature. When the temperature of the connector is too high, the temperature reduction measure is taken to avoid the burning of the connector caused by the high temperature.

[0039] The technical features of the above embodiments can be combined in any manner. To make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations do not exist, they should be considered as the scope of the present application.

[0040] The above embodiments only express several implementation manners of the present application, and the description is specific and detailed, but it should not be considered as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A circuit breaker comprising a housing (1) and a connector (2) mounted in a cavity of said housing (1), characterized in that: One end of the temperature sensor (3) is mounted on the connector (2) to monitor the temperature of the connector (2); The connector (2) comprises a shell (201) and a terminal (202), the shell (201) is provided with a mounting hole (201a), and the sensing end (301) of the temperature sensor (3) extends into the shell (201) from the mounting hole (201a).

2. A circuit breaker as claimed in claim 1, wherein: The terminal (202) is fixedly mounted on both sides of the shell (201), and the terminals (202) on both sides of the shell (201) are provided with a partition one (203) between the wiring parts (202a) of the terminals (202), and the sensing end (301) of the temperature sensor (3) extends into the slot hole (203a) on the partition one (203) from the mounting hole (201a).

3. A circuit breaker as claimed in claim 1, wherein: The sensing end (301) of the temperature sensor (3) is connected to the signal output terminal (302) through the wire (4), and the signal output terminal (302) is located on the other end side of the circuit breaker housing (1) opposite to the end side where the button (5) is located.

4. A circuit breaker as claimed in claim 3, wherein: The other end side of the housing (1) opposite to the end side where the button (5) is located protrudes towards the plug-in board (6) in the length direction of the housing (1), and the signal output terminal (302) is located in the cavity of the outer cavity (101).

5. A circuit breaker as claimed in claim 4, wherein: The outer cavity (101) is located between the two plug-in boards (6) in the height direction of the circuit breaker.

6. The circuit breaker of claim 1, wherein: A partition two (9) is arranged between the conductive row (7) and the operating mechanism (8) of the circuit breaker, and a boss (901) is arranged on the partition two (9) close to the connector (2), and the boss (901) abuts against the temperature sensor (3) to prevent the sensing end (301) of the temperature sensor (3) from falling off from the mounting hole (201a).

7. A circuit breaker as claimed in claim 6, wherein: The boss (901) is arranged on the housing (1) and / or the partition two (9) close to the connector (2).

8. The circuit breaker of claim 6, wherein: A buckle (902) is arranged on the partition two (9) and / or the housing (1), and the wire (4) is constrained in position by the buckle (902) to be arranged along the length direction of the circuit breaker.

9. A circuit breaker as claimed in claim 8, wherein: The wire (4) is arranged along the bottom of the circuit breaker housing (1).

10. The circuit breaker of claim 1, wherein: The temperature sensor (3) is an NTC temperature sensor.

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