CN220585163U - Circuit breaker - Google Patents

Abstract

The application provides a circuit breaker relates to the technical field of electrical devices. The circuit breaker provided by the embodiment of the application comprises a shell and a touch piece; the shell is provided with a containing cavity and a mounting groove, the mounting groove is used for containing the micro switch, and one side of the mounting groove, which is close to the outside of the shell, is provided with an opening; the touch piece is rotationally connected in the accommodating cavity, and the circuit breaker drives the touch piece to rotate when being switched on and off; a communication port is arranged on the groove wall of one side of the mounting groove, which is close to the touch piece, and the communication port is used for enabling a part of the micro switch to extend from the mounting groove to the accommodating cavity. The circuit breaker that this application provided has the advantage of the user of being convenient for assemble by oneself and dismantle micro-gap switch as required.

Description

Circuit breaker

Technical Field

The embodiment of the application relates to the technical field of electrical devices, in particular to a circuit breaker.

Background

The circuit breaker is an important part in the power distribution electric appliance, is mainly used for various low-voltage power systems, and is used for switching on and off current in a power grid circuit and protecting circuits and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit, single-phase grounding and the like.

The micro switch in the circuit breaker is used for indicating the on and off states of the power supply and the circuit breaker, and the micro switch in the related art is generally assembled before the circuit breaker leaves the factory and is difficult to disassemble and reassemble after the circuit breaker is assembled.

Disclosure of Invention

In view of the above, embodiments of the present application provide a circuit breaker, which is convenient for a user to self-assemble and disassemble a micro switch as required.

In a first aspect, a first circuit breaker provided in an embodiment of the present application includes a housing and a trigger; the shell is provided with a containing cavity and a mounting groove, the mounting groove is used for containing the micro switch, and one side of the mounting groove, which is close to the outside of the shell, is provided with an opening; the touch piece is rotationally connected in the accommodating cavity, and the circuit breaker drives the touch piece to rotate when being switched on and off; a communication port is arranged on the groove wall of one side of the mounting groove, which is close to the touch piece, and the communication port is used for enabling a part of the micro switch to extend from the mounting groove to the accommodating cavity.

Through the scheme, when the circuit breaker is used under the condition that a user does not need to use the micro switch to know the opening and closing state of the circuit breaker, the micro switch does not need to be arranged in the mounting groove, and the circuit breaker still has a switching function. When a user needs to know the opening and closing state of the circuit breaker through the micro switch, the micro switch can be automatically installed in the installation groove, and the part of the micro switch enters the accommodating cavity from the installation groove through the communication port, so that the micro switch is contacted in the rotating process of the touch piece, the micro switch is conducted, and the user can know the opening and closing state of the circuit breaker through the micro switch. Because the mounting groove is provided with the opening at one side close to the outside of the shell, a user does not need to disassemble the shell when mounting the micro switch, and can directly load the micro switch into the shell from the opening, thereby being convenient for the user to assemble and disassemble the micro switch. In addition, in the production and manufacturing process, the step of installing the micro switch is omitted, and the production efficiency of the circuit breaker is improved.

In an alternative mode, a lead hole is further formed in the shell, one end of the lead hole is communicated with the mounting groove, and the other end of the lead hole is communicated with the outside of the shell.

Through the scheme, when the micro switch is installed, the connecting wire of the micro switch can penetrate out of the shell from the lead hole so as to be connected with a power supply or a signal interface.

In an alternative, the circuit breaker further comprises a cover comprising a sticker covering the opening; and/or the sealing cover comprises a cover plate which is detachably connected with the opening; and/or the sealing cover comprises a plug which is plugged in the opening.

Through the scheme, the sealing cover can prevent sundries from entering the mounting groove, further prevent sundries entering the mounting groove from entering the accommodating cavity from the communicating port, and influence normal opening and closing of the circuit breaker. The adhesive paper, the cover plate and the plug can achieve the effect of preventing sundries from entering the mounting groove, and the adhesive paper, the cover plate and the plug are low in cost and easy to obtain.

In a second aspect, the present application provides another circuit breaker, the circuit breaker comprising a housing, a trigger, and a microswitch; the shell is provided with a containing cavity and a mounting groove, and one side of the mounting groove, which is close to the outside of the shell, is provided with an opening; the touch piece is rotationally connected in the accommodating cavity, the touch piece is driven to rotate when the breaker is switched on and off, and a communication port is formed in a groove wall of one side of the mounting groove, which is close to the touch piece; the micro-gap switch is installed in the mounting groove, and the part of micro-gap switch extends to the holding cavity from the communication port and is located in the rotation range of the touch piece.

Through the scheme, as the part of the micro switch extends from the communication port to the accommodating cavity, the micro switch can be contacted in the rotating process of the touch piece, so that the micro switch is conducted, and a user can know the switching-on and switching-off state of the circuit breaker through the micro switch. When the circuit breaker is used under the condition that a user does not need to use the micro switch to know the opening and closing state of the circuit breaker, the user can take out the micro switch from the opening of the mounting groove, and the circuit breaker still has a switching function. Because the mounting groove is close to the outside of the shell and is provided with the opening, in the production and manufacturing process, or in the use process of a user, the shell does not need to be disassembled when the micro switch is disassembled or installed, the micro switch can be directly installed into the shell from the opening, the micro switch is convenient to disassemble and assemble, and the production and manufacturing efficiency of the circuit breaker is improved.

In an alternative mode, the micro-switch comprises a connecting wire, a lead hole is formed in the shell, one end of the lead hole is communicated with the mounting groove, the other end of the lead hole is communicated with the outside of the shell, and the connecting wire penetrates through the lead hole.

Through the scheme, the connecting wire of the micro switch can penetrate out of the shell from the lead hole so as to be connected with a power supply or a signal interface.

In an alternative, the circuit breaker further comprises a cover that fits over the opening.

Through the scheme, the sealing cover can prevent sundries from entering the mounting groove to influence the normal use of the micro switch, and further can prevent sundries entering the mounting groove from entering the accommodating cavity from the communicating port to influence the normal opening and closing of the circuit breaker.

In an alternative mode, the sealing cover comprises a cover plate and at least one pair of limit posts, wherein the limit posts are positioned on one side of the cover plate close to the mounting groove, and each pair of limit posts are oppositely arranged on two sides of the micro switch and used for limiting the position of the micro switch.

Through above-mentioned scheme, the apron is used for closing in the opening part, prevents debris entering mounting groove, and spacing post on the apron then can be after the apron lid closes in the opening, restrict micro-gap switch's position from micro-gap switch both sides, prevents that micro-gap switch from taking place to rock in the mounting groove, perhaps reduces the range that micro-gap switch rocked relative shell.

In an alternative mode, the shell is provided with a first connecting hole, and the cover plate is coaxially provided with a second connecting hole corresponding to the first connecting hole; the circuit breaker further comprises a connecting piece, wherein the connecting piece penetrates through the first connecting hole and the second connecting hole to connect the cover plate and the shell.

Through above-mentioned scheme, connect apron and casing through the connecting piece, prevent that the apron from droing from the casing.

In an alternative, the cover further comprises a decal, a portion of which is affixed to the cover sheet and another portion of which is affixed to the housing.

Through above-mentioned scheme, the sticker can be fixed to apron and casing bonding, prevents that the apron from droing from the casing.

In an alternative mode, the circuit breaker is a dual-power transfer switch, two mounting grooves are arranged and are respectively positioned at two sides of the touch piece, a micro switch is arranged in each mounting groove, and part of the micro switch extends from the communication port to the accommodating cavity and is positioned in the rotation range of the touch piece; the touch piece is provided with a double-opening position, a first closing position and a second closing position, one micro switch is touched when the touch piece rotates from the double-opening position to the first closing position, and the other micro switch is touched when the touch piece rotates from the double-opening position to the second closing position.

The two micro switches are used for indicating different closing states of the dual-power transfer switch respectively, so that a user can know the opening and closing states of the circuit breaker and the power supply which is switched on during closing in time in the using process, the requirements of the user are met, and the use of the circuit breaker is facilitated.

To sum up, according to the circuit breaker of the embodiment of the application, the mounting groove is formed in the shell, the opening of the mounting groove faces to one side outside the shell, so that the micro-switch can be automatically mounted in the mounting groove or dismounted from the mounting groove according to the needs of a user, and the user does not need to disassemble the shell when mounting or dismounting the micro-switch, and the micro-switch can be directly mounted in the shell or taken out from the shell from the opening, so that the micro-switch can be dismounted and mounted by the user conveniently.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following detailed description of the present application will be presented in order to make the foregoing and other objects, features and advantages of the embodiments of the present application more understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an overall structure of a circuit breaker according to an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of the circuit breaker shown in fig. 1 taken along the A-A plane.

Fig. 3 is a schematic cross-sectional structure of another circuit breaker according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view of the portion B in fig. 3.

Fig. 5 is a schematic structural diagram of a micro switch according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a cover according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the drawings are intended to cover, but not exclude, other matters. The word "a" or "an" does not exclude the presence of a plurality.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The directional terms appearing in the following description are all directions shown in the drawings and are not limiting to the specific structure of the circuit breaker of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, unless otherwise indicated, the meaning of "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two).

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., the terms "connected" or "coupled" of a mechanical structure may refer to a physical connection, e.g., the physical connection may be a fixed connection, e.g., by a fastener, such as a screw, bolt, or other fastener; the physical connection may also be a detachable connection, such as a snap-fit or snap-fit connection; the physical connection may also be an integral connection, such as a welded, glued or integrally formed connection. "connected" or "connected" of circuit structures may refer to physical connection, electrical connection or signal connection, for example, direct connection, i.e. physical connection, or indirect connection through at least one element in the middle, so long as circuit communication is achieved, or internal communication between two elements; signal connection may refer to signal connection through a medium such as radio waves, in addition to signal connection through a circuit. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The circuit breaker provided in the embodiments of the present application is specifically described below with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, fig. 1 is a schematic overall structure of a circuit breaker according to an embodiment of the present application, and fig. 2 is a schematic cross-sectional structure of the circuit breaker shown in fig. 1, taken along A-A plane. Referring to fig. 1 and 2, a first circuit breaker according to an embodiment of the present disclosure includes a housing 110 and a contact 120; the shell 110 is provided with a containing cavity 111 and a mounting groove 112, the mounting groove 112 is used for containing the micro switch, and one side of the mounting groove 112, which is close to the outside of the shell 110, is provided with an opening 114; the touch piece 120 is rotatably connected in the accommodating cavity 111, and the circuit breaker drives the touch piece 120 to rotate when being switched on and off; the groove wall of the mounting groove 112, which is close to the touch piece 120, is provided with a communication port 113, and the communication port 113 is used for enabling a part of the micro switch to extend from the mounting groove 112 to the accommodating cavity 111.

The housing 110 is a shell-like component that houses other components of the circuit breaker, which can protect the other components of the circuit breaker and provide a mounting base and support for the component structures inside the housing 110. For example, the housing 110 may include a base and an upper cover, where the base and the upper cover are fastened to each other to form a receiving cavity 111, and a switch-on/off assembly of the circuit breaker, such as a moving contact, a static contact, etc., may be installed in the receiving cavity 111, which is not enumerated one by one in the embodiments of the present application.

The mounting groove 112 may be disposed on the base, or may be disposed on the upper cover, or may be partially disposed on the upper cover, or partially disposed on the base, which is not limited in this embodiment.

The micro switch is a common component used for indicating the opening and closing state of a power supply in the circuit breaker, and is touched when the circuit breaker is opened or closed, for example, the micro switch can be touched by a movable contact or other components linked with the movable contact, the component used for touching the micro switch is called a touching piece 120 in the embodiment of the application, it can be understood that the touching piece 120 can be a movable contact or other components linked with the movable contact, and the embodiment of the application does not limit the utility model.

It can be understood that, in the case that the micro switch is not installed in the installation slot 112, the circuit breaker still has a switching function, but the switching-on/off state of the circuit breaker cannot be intuitively understood.

The circuit breaker without the micro switch can be used for a user to know the working condition of the opening and closing state of the circuit breaker without using the micro switch.

When a user needs to know the opening and closing state of the circuit breaker through the micro switch, the micro switch can be automatically installed in the installation groove 112, and part of the micro switch enters the accommodating cavity 111 from the installation groove 112 through the communication port 113, so that the micro switch is contacted in the rotating process of the touch piece 120, the micro switch is turned on, and the user can know the opening and closing state of the circuit breaker through the micro switch.

Because the mounting groove 112 has the opening 114 on the side close to the outside of the housing 110, the user can directly mount the micro switch into the housing 110 through the opening 114 without disassembling the housing 110 when mounting the micro switch, thereby facilitating the user to mount and dismount the micro switch.

In addition, in the process of manufacturing the circuit breaker, only the mounting groove 112 for mounting the micro switch is reserved, and the related steps for mounting the micro switch are not needed, so that the production efficiency of the circuit breaker is improved.

In the above embodiments, the circuit breaker may be a single power control switch or a dual power transfer switch.

The single power supply control switch means that the circuit breaker only has one path of power supply, the power supply is disconnected when the circuit breaker is closed, and the power supply is disconnected when the circuit breaker is opened.

The double-power change-over switch is characterized in that two paths of power sources exist in the circuit breaker, one path of power source is a common power source, the other path of power source is a standby power source, the common power source is connected to supply power to the circuit when the circuit breaker is normally closed, and the standby power source can be connected to supply power to the circuit when the common power source fails; when the breaker is opened, the common power supply and the standby power supply are not connected.

As shown in fig. 2, in the case that the circuit breaker is a dual power transfer switch, the general structure of the circuit breaker is substantially the same as that of the circuit breaker described above, and the main differences in the structure of the dual power transfer switch and the single power control switch are: in the dual power transfer switch, two mounting slots 112 are provided and are respectively located at two sides of the touch member 120, each mounting slot 112 is internally provided with a micro switch, one side of each mounting slot 112, which is close to the touch member 120, is provided with a communication port 113, and the communication port 113 is used for enabling a part of the micro switch to extend from the mounting slot 112 to the accommodating cavity 111.

In the above dual power transfer switch, a user can install a micro switch in each installation slot 112 as required, or can install a micro switch in only one installation slot 112, so the above structure provides more structural support for satisfying the use requirement of the user, and is convenient for the user to use.

As shown in fig. 2, in an embodiment, the housing 110 is further provided with a lead hole 115, and one end of the lead hole 115 communicates with the mounting groove 112, and the other end communicates with the outside of the housing 110.

Based on this, when installing the micro switch, the connecting wire of the micro switch can pass through the casing 110 from the lead hole 115 so as to be connected with a power supply or a signal interface, thereby facilitating the user to install the micro switch by himself.

As shown in fig. 2, in an embodiment, the circuit breaker further includes a cover 130, and the cover 130 covers the opening 114.

The cover 130 can prevent sundries from entering the installation groove 112, and further prevent sundries entering the installation groove 112 from entering the accommodating cavity 111 from the communication port 113, so as to influence normal opening and closing of the circuit breaker.

The structure of the closure 130 may be a variety of, for example, a removable cover plate, a plug that plugs within the opening 114, and the like.

In an alternative, the cover 130 includes a decal that covers the opening 114.

The decal may be coated paper, flexible plastic paper, cardboard, or synthetic paper comprising a variety of materials. The present application is not limited in this regard by the embodiments. It will be appreciated that any material of the sticker is strong enough to prevent debris from entering the mounting slot 112 without the micro switch being mounted in the mounting slot 112.

Compared with a cover plate or a plug of rigid material, the cost of the sticker is lower, the sticker is convenient to paste and remove, sundries are effectively prevented from entering the mounting groove 112, and meanwhile, the cost of the circuit breaker is reduced.

As shown in fig. 3 and 4, fig. 3 is a schematic cross-sectional structure of another circuit breaker according to an embodiment of the present application, and fig. 4 is an enlarged schematic structure of a portion B in fig. 3, referring to fig. 3 and 4, another circuit breaker is also provided, and the circuit breaker includes a housing 210, a touch member 220, and a micro switch 230; the housing 210 has a receiving chamber 211 and a mounting groove 212, and the mounting groove 212 has an opening 214 at a side close to the outside of the housing 210; the touch piece 220 is rotatably connected in the accommodating cavity 211, the touch piece 220 is driven to rotate when the breaker is switched on and off, and a communication port 213 is formed in a groove wall of one side of the mounting groove 212, which is close to the touch piece 220; the micro switch 230 is installed in the installation groove 212, and a portion of the micro switch 230 extends from the communication port 213 to the receiving cavity 211 and is located within a rotation range of the touch piece 220.

Also in this embodiment, the circuit breaker may be a single power control switch or a dual power transfer switch.

As shown in fig. 3, in the case that the circuit breaker is a dual power transfer switch, the general structure of the circuit breaker is substantially the same as that of the circuit breaker having the micro switch 230, and the main differences in the structure of the dual power transfer switch and the single power control switch are: in the dual power transfer switch, two mounting grooves 212 are arranged and are respectively positioned at two sides of a touch piece 220, a micro switch 230 is arranged in each mounting groove 212, and part of the micro switch 230 extends from a communication port 213 to a containing cavity 211 and is positioned in the rotation range of the touch piece 220; the trigger 220 has a double-opening position (the first end a of the trigger 220 is vertically upwards in fig. 3), a first closing position (the position after the first end a of the trigger 220 is offset leftwards by a preset angle in fig. 3), and a second closing position (the position after the first end a of the trigger 220 is offset rightwards by a preset angle in fig. 3), and when the trigger 220 rotates from the double-opening position to the first closing position, one micro switch (the micro switch on the left side in fig. 3) is triggered, and when the trigger 220 rotates from the double-opening position to the second closing position, the other micro switch (the micro switch on the right side in fig. 3) is triggered.

The two micro switches 230 respectively indicate different closing states of the dual-power transfer switch, so that a user can know the opening and closing states of the circuit breaker and the power supply connected during closing in time in the using process, the requirements of the user are met, and the use of the circuit breaker is facilitated.

It can be understood that, whether the switch is a single power control switch or a dual power transfer switch, the housing 210 and the touch member 220 are the same as the circuit breaker without the micro switch in the above embodiment, and the embodiments of the present application will not be repeated.

In the circuit breaker mounted with the micro switch 230, since a portion of the micro switch 230 extends from the communication port 213 to the accommodating cavity 211, the micro switch 230 is contacted in the process of rotating the touch member 220, so that the micro switch 230 is turned on, and a user can break the state of the circuit breaker through the micro switch 230. When the user does not need to use the micro switch 230 to know the opening and closing state of the circuit breaker, the user can take out the micro switch 230 from the opening 214 of the mounting groove 212, and the circuit breaker still has a switching function.

Because the mounting groove 212 is provided with the opening 214 at one side close to the outside of the shell 210, the shell 210 can be directly assembled with the micro switch 230 from the opening 214 without disassembling the shell 210 during the production and manufacturing process or during the use process of a user, thereby facilitating the assembly and disassembly of the micro switch 230 and improving the production and manufacturing efficiency of the circuit breaker.

As shown in fig. 5, fig. 5 is a schematic structural diagram of a micro switch according to an embodiment of the present application, referring to fig. 4 and 5, in some embodiments of the present application, the micro switch 230 includes a functional portion 231 and a triggering portion 232, the functional portion 231 is disposed in the mounting slot 212, and a triggering point 233 is disposed on the functional portion 231; the trigger part 232 is connected with the functional part 231, extends into the accommodating cavity 211 from the mounting groove 212 through the communication port 213, and the trigger part 232 is partially positioned in the rotation range of the trigger piece 220, so that the trigger part 232 can be pushed to move relative to the functional part 231 when the trigger piece 220 rotates from the opening position to the closing position, the trigger part 232 is enabled to be in contact with the trigger point 233, and the micro switch 230 is enabled to indicate the closing state of the circuit breaker.

Alternatively, the triggering portion 232 may be configured as an elastic reed structure, where the elastic reed can be elastically deformed and is not easy to break and damage during the process that the triggering portion 232 is pushed by the touching member 220 to move relative to the functional portion 231. In addition, since the elastic reed can elastically deform to a certain extent, in the process of installing the micro switch 230, the position accuracy requirement of the trigger part 232 relative to the touch part 220 can be properly reduced, so that a user can perform the operation of installing or detaching the micro switch 230 by himself, and the operation difficulty is reduced.

The mounting groove 212 is used for accommodating the functional portion 231 of the micro switch 230, in this embodiment, the shape, the size, etc. of the mounting groove 212 are not limited, and the shape and the size of the mounting groove 212 are set corresponding to the functional portion 231 of the micro switch 230, so that at least the functional portion 231 can be accommodated.

As shown in fig. 3, 4 and 5, in some embodiments, the micro switch 230 includes a connection wire 234, and the housing 210 is provided with a lead hole 215, one end of the lead hole 215 is communicated with the mounting groove 212, the other end is communicated with the outside of the housing 210, and the connection wire 234 is penetrated through the lead hole 215.

Based on this, the connection wire 234 of the micro switch 230 may pass out of the housing 210 from the lead hole 215 so as to be connected with a power source or a signal interface.

As shown in fig. 4, in some embodiments, the circuit breaker further includes a cover 240, the cover 240 covering at the opening 214.

The cover 240 can prevent sundries from entering the mounting groove 212 to affect the normal use of the micro switch 230, and further can prevent sundries entering the mounting groove 212 from entering the accommodating cavity 211 from the communication port 213 to affect the normal opening and closing of the circuit breaker.

The structure of the cover 240 may be various, such as a removable cover plate 241, a plug that plugs within the opening 214, and the like.

Fig. 6 is a schematic structural diagram of a cover according to an embodiment of the present application. Referring to fig. 4 and 6, in an alternative manner, the cover 240 includes a cover 241 and at least one pair of limiting posts 242, the limiting posts 242 are located on one side of the cover 241 near the mounting slot 212, and each pair of limiting posts 242 are disposed on two opposite sides of the micro switch 230 for limiting the position of the micro switch 230.

The cover plate 241 is used to cover the opening 214 to prevent sundries from entering the mounting groove 212. Alternatively, the cover plate 241 may partially or entirely cover the opening 214.

The spacing posts 242 may be cylinders, prisms, or other shaped posts, and the embodiments herein do not limit the structure of the spacing posts 242.

Further, the stopper posts 242 may have one or more groups, for example, in the embodiment shown in fig. 6, the stopper posts 242 are provided with one group.

When the cover plate 241 is covered on the opening 214, the distance between the two limiting posts 242 of each set of limiting posts 242, which are close to each other, is greater than or equal to the dimension of the microswitch 230 in the direction in which the two limiting posts 242 are oppositely arranged. However, it should be noted that the distance between the two limiting posts 242 of each set should not be too large relative to the dimension of the micro switch 230 in the same direction, so that the two limiting posts 242 can contact with the micro switch 230 when the micro switch 230 shakes by a small extent, thereby limiting the position of the micro switch 230 and preventing the micro switch 230 from shaking by a larger extent.

The cover 241 may be mounted in a variety of ways, and several ways of mounting the cover 241 are illustrated below.

Referring to fig. 4, in an alternative manner, the inner wall of the opening 214 is provided with a step, and the cover 241 is abutted against the step surface 216 from the outside of the housing 210.

The step surface 216 is a surface for transition between surfaces of different heights. The steps on the inner wall of the opening 214 may be disposed around the opening 214 in a circle, or may be disposed only on a part of the inner wall of the opening 214, which is not limited in the embodiment of the present application.

Based on this, the step surface 216 on the inner wall of the opening 214 can play a limiting role on the cover plate 241, preventing the cover plate 241 from being pressed inward to the micro switch 230.

With continued reference to fig. 4 and 6, in another alternative manner, the housing 210 has a first connecting hole 243, and the cover 241 is coaxially provided with a second connecting hole 244 corresponding to the first connecting hole 243; the circuit breaker further includes a connection member 245, and the connection member 245 is inserted through the first connection hole 243 and the second connection hole 244 to connect the cover 241 and the case 210.

The first connecting hole 243 and the second connecting hole 244 may be light holes or screw holes, and when the first connecting hole 243 and the second connecting hole 244 are light holes, the connecting piece 245 may be a positioning pin, and the positioning pin and the first connecting hole 243 and the second connecting hole 244 are in transition fit or interference fit, so that the position of the cover plate 241 relative to the housing 210 is positioned, and the position between the two is fixed.

When one of the first and second connection holes 243 and 244 is a screw hole, the connection member 245 may be a screw, or a screw-like structure, so that the connection member 245 is coupled to the cover plate 241 and the case 210 by being screw-coupled with the first and/or second connection holes 243 and 244.

In yet another alternative, the cover 240 further includes a sticker, a portion of which is adhered to the cover plate 241 and another portion of which is adhered to the housing 210.

Through the above scheme, the sticker can be used for pasting the cover plate 241 on the shell 210, so that the cover plate 241 is connected with the shell 210.

The above-listed fixing methods of the cover plate 241 may be used alone or in combination, so as to achieve multiple fixing of the relative positions of the cover plate 241 and the housing 210, which is not limited in the embodiment of the present application.

To sum up, according to the circuit breaker of the embodiment of the application, the mounting groove is formed in the shell, the opening of the mounting groove faces to one side outside the shell, so that the micro-switch can be automatically mounted in the mounting groove or dismounted from the mounting groove according to the needs of a user, and the user does not need to disassemble the shell when mounting or dismounting the micro-switch, and the micro-switch can be directly mounted in the shell or taken out from the shell from the opening, so that the micro-switch can be dismounted and mounted by the user conveniently.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A circuit breaker, comprising:

the shell is provided with a containing cavity and a mounting groove, the mounting groove is used for containing the micro switch, and one side, close to the outside of the shell, of the mounting groove is provided with an opening;

the touch piece is rotationally connected in the accommodating cavity, and the circuit breaker drives the touch piece to rotate when being switched on and off;

the mounting groove is close to the groove wall of one side of the touch piece, and a communication port is formed in the groove wall of the mounting groove, and is used for enabling a part of the micro switch to extend from the mounting groove to the accommodating cavity.

2. The circuit breaker of claim 1, wherein the housing is further provided with a lead hole, one end of which communicates with the mounting groove and the other end of which communicates with the outside of the housing.

3. The circuit breaker according to claim 1 or 2, further comprising a cover comprising a sticker covering the opening; and/or the number of the groups of groups,

the cover comprises a cover plate which is detachably connected with the opening; and/or the number of the groups of groups,

the closure includes a plug that plugs within the opening.

4. A circuit breaker, comprising:

the shell is provided with a containing cavity and a mounting groove, and one side of the mounting groove, which is close to the outside of the shell, is provided with an opening;

the touch piece is rotationally connected in the accommodating cavity, the circuit breaker drives the touch piece to rotate when being switched on and off, and a communication port is formed in a groove wall of one side of the mounting groove, which is close to the touch piece;

and the micro switch is arranged in the mounting groove, and part of the micro switch extends from the communication port to the accommodating cavity and is positioned in the rotation range of the touch piece.

5. The circuit breaker of claim 4, wherein the micro switch comprises a connecting wire, a lead hole is formed in the housing, one end of the lead hole is communicated with the mounting groove, the other end of the lead hole is communicated with the outside of the housing, and the connecting wire penetrates through the lead hole.

6. The circuit breaker of claim 4, further comprising a cover that covers at the opening.

7. The circuit breaker of claim 6, wherein the cover includes a cover plate and at least one pair of limit posts, the limit posts being located on a side of the cover plate adjacent to the mounting slot, each pair of limit posts being disposed opposite sides of the microswitch for limiting a position of the microswitch.

8. The circuit breaker according to claim 7, wherein the housing has a first connection hole, and the cover plate is coaxially provided with a second connection hole corresponding to the first connection hole;

the circuit breaker further comprises a connecting piece, wherein the connecting piece penetrates through the first connecting hole and the second connecting hole to connect the cover plate and the shell.

9. The circuit breaker of claim 7, wherein the cover further comprises a sticker, a portion of the sticker being affixed to the cover plate and another portion of the sticker being affixed to the housing.

10. The circuit breaker according to any one of claims 4-9, wherein the circuit breaker is a dual power transfer switch, two mounting slots are respectively arranged on two sides of the touch piece, one micro switch is arranged in each mounting slot, and a part of the micro switch extends from the communication port to the accommodating cavity and is positioned in the rotation range of the touch piece;

the touch piece is provided with a double-opening position, a first closing position and a second closing position, one micro switch is touched when the touch piece rotates from the double-opening position to the first closing position, and the other micro switch is touched when the touch piece rotates from the double-opening position to the second closing position.