CN212136371U

CN212136371U - Circuit breaker

Info

Publication number: CN212136371U
Application number: CN202021306064.1U
Authority: CN
Inventors: 俞晓峰; 马雄杰
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2020-12-11
Anticipated expiration: 2030-07-07

Abstract

A circuit breaker belongs to the technical field of low-voltage electrical appliances. Comprises a base and an operating mechanism; operating device installs on the base, and operating device is used for driving the contact system of circuit breaker to close and divide the action, its characterized in that: the mounting bracket is fixed relative to the base, and a clamping structure for realizing mutual clamping and matching of the controller and the mounting bracket is arranged between the controller and the mounting bracket. The advantages are that: the controller is installed between the controller and the base of the circuit breaker in a clamping mode, the use of screws is omitted, the installation of the controller is simplified, and the modularization process of the circuit breaker is improved.

Description

Circuit breaker

Technical Field

The utility model belongs to the technical field of low-voltage apparatus, concretely relates to circuit breaker.

Background

The low-voltage frame circuit breaker is a component of low-voltage electrical equipment with large capacity, is mainly used in an industrial power system, can ensure the connection and disconnection of a circuit under rated load, automatically disconnect the circuit when the circuit is in an abnormal state (such as overload, short circuit, undervoltage and the like), and can completely isolate the load from a power supply by separating a movable contact from a fixed contact. The controller of the low-voltage circuit breaker plays a crucial role in realizing modularization, intellectualization and automation of the circuit breaker.

In present circuit breaker structure, the controller is fixed in on the base through a plurality of mounting screws, and assembly efficiency is not high. When the controller is maintained, if the controller needs to be disassembled, the relevant mounting screws need to be disassembled, and the controller is mounted again in a screw screwing mode during the mounting of the controller, so that the efficiency is not high.

In view of the above-mentioned prior art, there is a need for a reasonable improvement in the structure of the existing circuit breaker. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

Disclosure of Invention

The task of the utility model is to provide a circuit breaker, the mode that the controller on it passes through the joint realize with the circuit breaker the base between the installation, saved the use of screw, simplified the installation of controller, improved the modularization process of circuit breaker.

The utility model discloses a task is accomplished like this, a circuit breaker, including base, operating device; operating device installs on the base, and operating device is used for driving the contact system of circuit breaker to close and divide the action, still include the installing support and install the installing support on the controller, the installing support is fixed for the base, controller and installing support between have and realize both mutual joint complex joint structure.

In a specific embodiment of the present invention, the clamping structure includes a hook and a slot, and the hook and the slot are in clamping fit; the clamping hook is positioned on the controller, and the clamping groove is positioned on the mounting bracket; or; the clamping hook is positioned on the mounting bracket, and the clamping groove is positioned on the controller.

In another specific embodiment of the present invention, the clamping structure is a hanging clamping structure, and includes a male clamping portion and a female clamping portion, and the male clamping portion and the female clamping portion are in hanging fit with each other; the male clamping part is positioned on the controller, and the female clamping part is positioned on the mounting bracket.

In another specific embodiment of the present invention, the male connecting portion is a joint terminal, the female connecting portion is a joint hole, and the joint terminal is clamped into the joint hole, thereby realizing the joint between the controller and the mounting bracket.

In another specific embodiment of the present invention, the male locking portion is a locking hole, the female locking portion is a locking terminal, and the locking terminal is locked into the locking hole, thereby realizing locking between the controller and the mounting bracket.

In yet another specific embodiment of the present invention, the circuit breaker further includes an auxiliary bracket mounted on the base, the auxiliary bracket is spaced apart from the operating mechanism, the mounting bracket includes a first bracket and a second bracket, one end of the first bracket is fixed to the operating mechanism and the auxiliary bracket, and the other end of the first bracket is used for clamping the clamping terminal on the controller; one end of the second support is installed on the base, and the other end of the second support is used for clamping the clamping terminal on the controller.

The utility model discloses a further a concrete embodiment, first support include the first base plate, be equipped with the last joint hole on the first base plate, last joint hole be used for with joint terminal cooperation on the controller realizes the joint on controller upper portion.

In a more specific embodiment of the present invention, the upper clamping hole includes an upper probing half hole and an upper clamping half hole, the upper probing half hole is connected to the upper clamping half hole, and the upper probing half hole is located above the upper clamping half hole; the clamping terminal comprises a flange and a clamping end, a first neck is arranged between the flange and the clamping end, and the outer edges of the flange and the clamping end are larger than the outer edge of the first neck; the first neck is clamped into the upper clamping half hole, and the clamping end stretches through the upper clamping half hole.

In yet another specific embodiment of the present invention, the first substrate further has a positioning hole, and the positioning hole is used for positioning with the controller.

In yet another specific embodiment of the present invention, the second bracket includes a base portion, a second fixing portion and a hanging portion, the second fixing portion and the hanging portion are connected to the base portion, the second fixing portion is fixedly connected to the base, and the hanging portion is used for hanging the clamping terminal on the controller.

In a more specific embodiment of the present invention, the connecting terminal further includes an embedded end, the flange is located between the embedded end and the clamping end, a second neck is disposed between the flange and the embedded end, and the outer edges of the flange and the embedded end are larger than the outer edge of the second neck; and an embedding hole is formed in one side of the controller close to the mounting bracket, the embedding hole comprises an accommodating hole cavity and a through hole part, the accommodating hole cavity is used for accommodating the flange, and the through hole part is used for the embedded end to penetrate through and accommodating the second neck part.

In yet another specific embodiment of the present invention, the clip terminal is a separate component, and the clip terminal is made of rubber or resin.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: the controller of the circuit breaker is connected with the mounting bracket in a clamped mode to achieve mounting of the controller, use of screws is omitted, mounting and dismounting of the controller are simplified, efficiency is improved, and meanwhile the modularization process of the circuit breaker is improved.

Drawings

Fig. 1 is a schematic diagram of the circuit breaker of the present invention.

Fig. 2 is an installation schematic diagram of the controller of the circuit breaker of the present invention.

Fig. 3 is the installation schematic diagram of the installation support of the circuit breaker.

Fig. 4 is a schematic diagram of a first support of the circuit breaker of the present invention.

Fig. 5 is a schematic view of a second support of the circuit breaker according to the present invention.

Fig. 6 is another schematic diagram of a second support of the circuit breaker according to the present invention.

Fig. 7 is a schematic back view of the controller according to the present invention.

Fig. 8 is an exploded view of the back of the controller according to the present invention.

Fig. 9 is an installation schematic diagram of the snap terminal and the insertion hole on the back of the controller according to the present invention.

Fig. 10 is a schematic diagram of a card terminal of the controller of the present invention.

In the figure: 1. the connector comprises a controller, 11, a clamping terminal, 111, a flange, 112, an embedded end, 113, a clamping end, 114, a first neck part, 115, a second neck part, 12, a clamping hook, 13, an insertion hole, 14, a positioning boss, 15, a signal interface, 16, an embedded hole, 161, an accommodating hole, 162, a through hole part and 17, a positioning protrusion;

2. the mounting bracket comprises a mounting bracket 21, a first bracket 211, a first base plate 2111, an abdication cavity 2112, an upper clamping hole, a 21121, an upper access half hole, a 21122, an upper clamping half hole, a 2113, a positioning hole, a 21111, an abdication cavity fixing hole, a 212, a first fixing part, a 2121, a first mounting part, 21211, a first screw mounting hole, 21212, a first opening hole, 2122, a second mounting part, 21221, a second screw mounting hole, 22, a second bracket, 221, a base part, 222, a side flange, 2221, a mounting square hole, 222, a hanging part, 2231, a lower clamping hole, 22311, a lower access half hole, 22312, a lower clamping half hole, 224, a second fixing part, 2241, an abdication groove, 2242 and a mounting through hole;

3. auxiliary support, 31, first mounting hole; 4. an operating mechanism, 41, a side plate, 411, a second mounting hole; 5. base, 51, mounting cavity, 511, threaded fastening hole.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 1, the present invention relates to a circuit breaker, which includes a base 5, wherein an operating mechanism 4 is installed on the base 5, and the operating mechanism 4 provides an actuating energy for a contact system located in an inner cavity formed by the base 5 and a bottom plate. The base 5 is also provided with an auxiliary bracket 3 or hoop. The auxiliary support 3 is located at one side of the operating mechanism 4 at intervals. Auxiliary stand 3 is used for providing the support to the pivot on operating device 4, prevents that the pivot from taking place to rock at the action in-process, influences the precision of circuit breaker action.

As shown in fig. 1 and 2, a controller 1 is further mounted on the base 5, and the controller 1 is mounted through a mounting bracket 2. The mounting bracket 2 may be mounted to any position of the circuit breaker as long as the normal operation of the circuit breaker is not affected, for example, to at least one of the base 5, the operating mechanism 4, and the auxiliary bracket 3, for example, may be mounted to the base 5. The mounting bracket 2 includes a first bracket 21 and a second bracket 22, and the first bracket 21 and the second bracket 22 are generally formed of sheet metal. The metal plate is processed and formed by bending, punching and other processes. One end of the first bracket 21 is fixed to the side plate of the operating mechanism 4 and the auxiliary bracket 3, and the other end is used for mounting the controller 1. And, one end of the second bracket 22 is mounted on the base 5, and the other end is used for mounting the controller 1. In this embodiment, the controller 1 is installed in a clamping manner, so that screws in screw installation are omitted, convenience in installation and disassembly is realized, and the modularization process of the circuit breaker is improved. The controller 1 and the mounting bracket 2 are provided with clamping structures for realizing mutual clamping and matching of the controller and the mounting bracket.

In this embodiment, the fastening structure is a hook structure, i.e., the controller 1 is close to the mounting bracket 2, and then the hook structure can be engaged with the mounting bracket by moving for a certain distance. The hanging and clamping structure comprises a male clamping part and a female clamping part, and the male clamping part and the female clamping part are in hanging and matching; the male clamping part is positioned on the controller 1, and the female clamping part is positioned on the mounting bracket 2.

Specifically, public joint portion be joint terminal 11, female joint portion be the joint hole, joint terminal 11 card go into the joint hole in, thereby realize the joint between controller 1 and the installing support 2.

Or specifically, public joint portion be the joint hole, female joint portion be the joint terminal, the joint terminal card go into the joint hole in, thereby realize the joint between controller 1 and the installing support 2.

As shown in fig. 4, the first bracket 21 includes a first substrate 211, and a first fixing portion 212 is disposed on the first substrate 211. The first fixing portion 212 is used for fixing the first bracket 21, the auxiliary bracket 3 and the operating mechanism 4. Specifically, the first fixing portion 212 includes a first mounting portion 2121 and a second mounting portion 2122. The first mounting portion 2121 is used for fixing with the auxiliary frame 3, and the second mounting portion 2122 is used for fixing with the operating mechanism 4.

As shown in fig. 4, an abdicating cavity 2111 is formed at an upper portion of the first substrate 211. The yielding cavity 2111 gives way to the signal terminal to be connected with the controller 1. Because the yielding cavity 2111 is open at the top and is rectangular, the yielding cavity has a bottom edge and two side edges. And the bottom edge is also provided with an installation notch. And abdication cavity fixing holes 21111 are formed in the outer parts of two sides of the abdication cavity 2111. Preferably, the number of the yielding cavity fixing holes 21111 is four, and two yielding cavity fixing holes 21111 are respectively arranged outside two sides of the yielding cavity 2111, namely two yielding cavity fixing holes 21111 are arranged on the outer side of each side edge of the yielding cavity 211.

As shown in fig. 4, the first substrate 211 is further provided with an upper engaging hole 2112 and a positioning hole 2113. The upper clamping hole 2112 is used for matching with the controller 1 to realize the clamping of the upper part of the controller 1. The positioning hole 2113 is used for positioning with the controller 1. The upper clamping hole 2112 is a through hole. The upper clamping hole 2112 includes an upper access half-hole 21121 and an upper clamping half-hole 21122. The upper half-hole 21121 is engaged with the upper half-hole 21122. The upper half-hole 21121 is located above the upper clamping half-hole 21122, i.e. the upper clamping half-hole 21122 is located below the upper half-hole 21121. Preferably, the upper half-hole 21121 is a rectangular hole, and the upper half-hole 21122 is a circular hole. More preferably, the upper fastening holes 2112 are two and horizontally spaced from each other. And the positioning hole 2113 is one and is positioned between the two upper clamping holes 2112.

As shown in fig. 3 and 4, the first mounting portion 2121 is a bent portion, and the first mounting portion 2121 is attached to a side surface of the auxiliary holder 3. A first mounting hole 31 is formed in a corresponding position on the side surface of the auxiliary bracket 3, and the first mounting hole 31 is used for being fixed to the first mounting part 2121. The second mounting portion 2122 is also a bent portion, and the second mounting portion 2122 is attached to the side plate 41 of the operating mechanism 4. The side plates 41 are a pair and located on both sides of the operating mechanism 4. Preferably, the second mounting portion 2122 is fixedly mounted on one side plate 41. More specifically, the side plate 41 is provided with a second mounting hole 411, and the second mounting hole 411 is used for being fixed to the second mounting portion 2122. The first mounting portion 2121 and the second mounting portion 2122 may be turned over, i.e., bent.

Referring to fig. 3 and 4, the first mounting portion 2121 is provided with a first screw mounting hole 21211, and the first screw mounting hole 21211 is used for being matched with the first mounting hole 31 to fix the first mounting portion 2121 and the auxiliary bracket 3. The first mounting portion 2121 is further provided with a first opening 21212 for mounting other components. The second mounting portion 2122 is provided with a second screw mounting hole 21221, and the second screw mounting hole 21221 is used for being matched with the second mounting hole 411 to fix the second mounting portion 2122 and the side plate 41 of the operating mechanism 4.

As shown in fig. 3, 5 and 6, the second bracket 22 is mounted on the base 5. Preferably, the second bracket 22 is also made of a metal plate, but may be made of other materials with satisfactory properties. The second bracket 22 includes a base 221, a second fixing portion 224 and a hanging portion 223. The base 221 is a main body of the second frame 22, and the second fixing portion 224 and the engaging portion 223 are connected to the base 221. The second fixing portion 224 is fixedly connected to the base 5. And the engaging portion 223 is used for engaging with the controller 1. Specifically, the base 221 is provided with a plurality of mounting holes, and the mounting holes are used for mounting other components of the circuit breaker.

As shown in fig. 3, 5, and 6, the base 5 is provided with an attachment cavity 51, and the attachment cavity 51 is provided with a screw fastening hole 511. The second fixing portion 224 protrudes into the mounting cavity 51 and is attached to the bottom surface of the mounting cavity 51. The second fixing portion 224 is provided with a relief groove 2241 and a mounting through hole 2242. The concession groove 2241 conceals the inner structure, so that the second fixing portion 224 can be attached to the bottom surface of the installation cavity 51. Screws are screwed into the screw fastening holes 511 through the mounting through holes 2242, thereby fixing the second fixing portions 224 to the mounting cavities 51. The hanging part 223 is provided with a lower clamping hole 2231. The lower clamping hole 2231 includes a lower protruding half-hole 22311 and a lower clamping half-hole 22312. The lower probing half-hole 22311 is engaged with the lower clamping half-hole 22312. The lower half-hole 22311 is located above the lower clamping half-hole 22312, preferably, the lower half-hole 22311 is a rectangular hole, and the lower clamping half-hole 22312 is a circular hole. More preferably, the number of the lower clamping holes 2231 is two, and the lower clamping holes 2231 are horizontally spaced from each other. The second bracket 22 is further provided with side flanges 222 positioned at two sides of the base 221. The side flanges 222 are used for mounting other components. The side flange 222 is further provided with a mounting square hole 2221.

As shown in fig. 4 to 7, the controller 1 is a module that provides signal processing for the circuit breaker. In this embodiment, the controller 1 is mounted on the mounting bracket 2. Specifically, the controller 1 is clamped on the mounting bracket 2. The controller 1 and the mounting bracket 2 are mounted and dismounted without screws, and the operation is simple and convenient. The controller 1 is provided with four clamping and hanging terminals 11, preferably, the clamping and hanging terminals 11 are respectively matched with the upper clamping hole 2112 and the lower clamping hole 2231 in a clamping manner. Specifically, the latching terminal 11 located above the controller 1 is first inserted into the upper insertion half-hole 21121, and then is latched into the upper latching half-hole 21122, so that the latching between the latching terminal 11 and the upper latching hole 2112 is realized. The latch terminal 11 located below the controller 1 is inserted into the lower insertion half-hole 22311, and then inserted into the lower latch half-hole 22312, so as to latch the latch terminal 11 and the lower latch hole 2231.

More preferably, as shown in fig. 8, the clamping terminal 11 is an independent component, and is clamped to the back surface of the controller 1, that is, the surface of the controller 1 close to the mounting bracket 2. Specifically, an insertion hole 16 is formed in the back surface of the controller 1, and the insertion hole 16 is connected with the clamping terminal 11 in a clamping manner, so that the clamping terminal 11 and the controller 1 are fixedly connected.

As shown in fig. 4 and 7, a positioning protrusion 17 is further disposed on the back surface of the controller 1, and the positioning protrusion 17 is inserted into the positioning hole 2113 to ensure the mounting and positioning between the controller 1 and the mounting bracket 2.

As shown in fig. 7 and 8, the back of the controller 1 is further provided with an insertion hole 13, a clamping hook 12 and a positioning boss 14, the insertion hole 13 is internally provided with a plug terminal, and the plug terminal in the insertion hole 13 is used for electrically connecting with a corresponding plug terminal on a power module of the controller 1. The clamping hook 12 is used for being clamped with a power module to realize the installation and fixation of the power module and the controller 1, and the positioning boss 14 is used for realizing the positioning with the power module to ensure the installation position of the power module. Preferably, the number of the positioning bosses 14 is four, and the positioning bosses are clamped at four corners of the power module. The back of the controller 1 is also provided with a signal interface 15, a plug terminal is arranged in the signal interface 15, and the plug terminal in the signal interface 15 is electrically connected with a plug connector of an external signal wire, so that the signal wire outside the controller 1 is electrically connected with the controller 1.

As shown in fig. 9 and 10, in order to meet the operation requirement of the snap terminal 11, the snap terminal 11 is usually made of a material having elasticity, such as rubber, resin, or the like. The snap terminal 11 includes a flange 111, a snap-in end 113 and an embedded end 112. The flange 111 is located between the snap-in end 113 and the embedded end 112. The flange 111 is annular and is located in the middle of the snap terminal 11. A first neck 114 is arranged between the flange 111 and the snap-in end 113, and the outer edges of the flange 111 and the snap-in end 113 are larger than the outer edge of the first neck 114. A second neck portion 115 is arranged between the flange 111 and the embedded end 112, and the outer edges of the flange 111 and the embedded end 112 are larger than the outer edge of the second neck portion 115.

With reference to fig. 7 to 10, the fixing manner of the card terminal 11 and the insertion hole 16 on the back of the controller 1 is as follows: the insertion hole 16 includes a receiving cavity 161 and a through hole portion 162. Specifically, the receiving bore 161 is configured to receive the flange 111, and the through-hole portion 162 is configured to receive the insertion end 112 and receive the second neck portion 115.

Referring to fig. 3 to fig. 10, the fixing manner of the clamping terminal 11 and the mounting bracket 2 is specifically as follows: the mounting bracket 2 includes a first bracket 21 and a second bracket 22. The snap-in end 113 positioned above the controller 1 is matched and installed with the upper snap-in hole 2112 on the first bracket 21. Specifically, the first neck portion 114 is clipped into the upper clipping half-hole 21122, and the clipping end 113 penetrates through the upper clipping half-hole 21122, so that the clipping terminal 11 and the first bracket 21 are completely installed. Similarly, the card input end 113 located below the controller 1 is installed in cooperation with the lower card hole 2231 on the second bracket 22. Specifically, the first neck portion 114 is snapped into the lower snap-in half-hole 22312, and the snap-in end 113 protrudes through the lower snap-in half-hole 22312, so that the snap-in terminal 11 and the second bracket 22 are completely installed.

In another embodiment, the clamping structure may be a clamping fit between the hook and the slot, and at this time, the hook may be located on two opposite surfaces between the controller 1 and the mounting bracket 2, for example, the bottom surface of the controller 1 and the opposite surface on the mounting bracket 2, or may be located on the side surface of the controller and the opposite surface on the mounting bracket 2. The clamping hook is positioned on the controller 1, and the clamping groove is positioned on the mounting bracket 2; or; the clamping hook is positioned on the mounting bracket 2, and the clamping groove is positioned on the controller 1. The hook has elasticity, so that when the hook is separated from or combined with the clamping groove, the hook and the clamping groove are buckled by utilizing the elasticity of the hook.

Claims

1. A circuit breaker comprises a base (5), an operating mechanism (4); operating device (4) are installed on base (5), and operating device (4) are used for driving the contact system of circuit breaker to close and divide the action, its characterized in that: still include installing support (2) and install installing support (2) on controller (1), installing support (2) are fixed for base (5), controller (1) and installing support (2) between have and realize both mutual joint complex joint structure.

2. The circuit breaker according to claim 1, wherein the clamping structure comprises a hook and a slot, and the hook and the slot are in clamping fit; the clamping hook is positioned on the controller (1), and the clamping groove is positioned on the mounting bracket (2); or; the clamping hook is positioned on the mounting bracket (2), and the clamping groove is positioned on the controller (1).

3. The circuit breaker according to claim 1, wherein the clamping structure is a hanging clamping structure, and comprises a male clamping part and a female clamping part, and the male clamping part and the female clamping part are mutually matched in a hanging manner; the male clamping part is positioned on the controller (1), and the female clamping part is positioned on the mounting bracket (2).

4. The circuit breaker according to claim 3, characterized in that the male clamping part is a clamping terminal (11), the female clamping part is a clamping hole, and the clamping terminal (11) is clamped into the clamping hole, so that the controller (1) and the mounting bracket (2) are clamped.

5. The circuit breaker according to claim 3, characterized in that the male clamping part is a clamping hole, the female clamping part is a clamping terminal, and the clamping terminal is clamped into the clamping hole, so as to realize the clamping between the controller (1) and the mounting bracket (2).

6. The circuit breaker according to claim 4, characterized in that the circuit breaker further comprises an auxiliary bracket (3) mounted on the base (5), the auxiliary bracket (3) is spaced apart from the operating mechanism, the mounting bracket (2) comprises a first bracket (21) and a second bracket (22), one end of the first bracket (21) is fixed to the operating mechanism (4) and the auxiliary bracket (3), and the other end is used for clamping the clamping terminal (11) on the controller (1); one end of the second support (22) is installed on the base (5), and the other end of the second support is used for clamping the clamping terminal (11) on the controller (1).

7. The circuit breaker according to claim 6, wherein the first bracket (21) comprises a first substrate (211), the first substrate (211) is provided with an upper clamping hole (2112), and the upper clamping hole (2112) is used for matching with the clamping terminal (11) on the controller (1) to realize the clamping of the upper part of the controller (1).

8. The circuit breaker according to claim 7, wherein said upper latch hole (2112) comprises an upper protrusion half-hole (21121) and an upper latch half-hole (21122), said upper protrusion half-hole (21121) being engaged with said upper latch half-hole (21122), said upper protrusion half-hole (21121) being located above said upper latch half-hole (21122); the clamping terminal (11) comprises a flange (111) and a clamping end (113), a first neck part (114) is arranged between the flange (111) and the clamping end (113), and the outer edges of the flange (111) and the clamping end (113) are larger than the outer edge of the first neck part (114); the first neck (114) is snapped into the upper snap half-hole (21122), and the snap-in end (113) protrudes through the upper snap half-hole (21122).

9. A circuit breaker according to claim 7 wherein said first substrate (211) further comprises positioning holes (2113), said positioning holes (2113) being adapted to be positioned relative to the controller (1).

10. A circuit breaker according to claim 6 wherein said second support (22) comprises a base portion (221), a second fixed portion (224) and an engaging portion (223), said second fixed portion (224) and said engaging portion (223) are both connected to said base portion (221), said second fixed portion (224) is fixedly connected to said base (5), and said engaging portion (223) is used for engaging said snap terminals (11) on said controller (1).

11. The circuit breaker according to claim 8, wherein said snap terminal (11) further comprises an embedded end (112), said flange (111) is located between said snap end (113) and said embedded end (112), a second neck portion (115) is provided between said flange (111) and said embedded end (112), and the outer edges of said flange (111) and said embedded end (112) are larger than the outer edge of said second neck portion (115); an embedding hole (16) is formed in one side, close to the mounting support (2), of the controller (1), the embedding hole (16) comprises an accommodating hole cavity (161) and a through hole portion (162), the accommodating hole cavity (161) is used for accommodating the flange (111), and the through hole portion (162) is used for allowing the embedding end (112) to penetrate through and accommodating the second neck portion (115).

12. A circuit breaker according to claim 4 wherein said snap terminal (11) is a separate piece, said snap terminal (11) being made of rubber or resin.