CN216487932U - Circuit breaker base and circuit breaker - Google Patents

Abstract

A circuit breaker base and a circuit breaker relate to the technical field of low-voltage apparatuses. The circuit breaker base comprises a base body with an accommodating groove, a movable contact plate, a fixed contact and a plug-in end, wherein the movable contact plate is connected in the accommodating groove in a sliding manner; the power supply end is electrically connected with the fixed contact, and the inserting end is used for being matched with the matching end on the circuit breaker body to be inserted and pulled out; when the breaker body is separated from the inserting end, the movable contact plate is in contact connection with the fixed contact; when the circuit breaker body is inserted into the inserting end, the circuit breaker body can drive the movable contact plate to move towards the direction far away from the fixed contact, so that the movable contact plate is disconnected from the fixed contact. This circuit breaker includes circuit breaker body and foretell circuit breaker base, is equipped with the cooperation end on the circuit breaker body, and the circuit breaker body is pegged graft in the grafting of circuit breaker base through the cooperation end and is served. The circuit breaker base can be convenient to maintain, and a main switch does not need to be disconnected during maintenance.

Description

Circuit breaker base and circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage apparatuses, in particular to a circuit breaker base and a circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. When faults such as electric leakage, overload, short circuit and the like occur in the system, the circuit breaker can quickly cut off a fault mechanism in the system or cut off the power supply of the whole power supply so as to prevent the fault from being enlarged and avoid causing huge economic loss and casualties.

The existing miniature circuit breakers generally comprise two types, one type is a screw connection type, and the other type is a plug-in type. However, when a certain load end is maintained by adopting a screw wiring mode, the space of the cabinet body is limited, so that the wires are difficult to disassemble, and the working difficulty and the maintenance cost of operation and maintenance personnel are increased; secondly, in order to guarantee staff's safety, need cut off the power supply to master switch in the switch board. Thus, the normal power utilization of other load ends will be affected. The plug-in circuit breaker is easy to operate by mistake, so that the circuit breaker is separated from the base, and normal electricity utilization of a user is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit breaker base and a circuit breaker, which are convenient to maintain and do not need to be disconnected when in maintenance.

The embodiment of the utility model is realized by the following steps:

in one aspect of the present invention, a circuit breaker base is provided, which includes a base body having an accommodating groove, a movable contact plate slidably connected in the accommodating groove, a fixed contact fixedly connected in the accommodating groove, and an inserting end disposed on the base body; the power supply end is electrically connected with the static contact, and the inserting end is used for being matched with and inserted into the matching end on the circuit breaker body; when the breaker body is separated from the plug-in terminal, the movable contact plate is in contact connection with the fixed contact; when the circuit breaker body is inserted into the inserting end, the circuit breaker body can drive the movable contact plate to move towards the direction far away from the fixed contact, so that the movable contact plate is disconnected from the fixed contact. The circuit breaker base can be convenient to maintain, and a main switch does not need to be disconnected during maintenance.

Optionally, the plug end is a wiring board connected to the base body, and the mating end is a plug slot that is plugged in and unplugged from the wiring board.

Optionally, the circuit breaker base further comprises a first elastic piece, one end of the first elastic piece is connected with the bottom of the accommodating groove, and the other end of the first elastic piece is connected with the movable contact plate; the movable contact plate is driven to move towards the direction far away from the static contact, and the first elastic piece is pressed to store energy.

Optionally, the circuit breaker base further comprises a supporting piece, and the supporting piece is connected with the movable contact plate; when the circuit breaker body is inserted on the wiring board, the circuit breaker body can drive the movable contact plate to move towards the direction far away from the fixed contact through the supporting piece.

Optionally, the one end that support piece is close to the circuit breaker body stretches out outside the storage tank, and when the circuit breaker body was pegged graft on the wiring board, the circuit breaker body can act on support piece to drive the direction motion that the movable contact plate orientation kept away from the static contact.

Optionally, the terminal board is electrically connected with the power supply terminal, and the fixed contact is electrically connected with the power supply terminal through the terminal board.

Optionally, a limiting table is arranged in the accommodating groove and is positioned between the bottom of the accommodating groove and the fixed contact; when the circuit breaker body is plugged on the wiring board, one surface of the movable contact plate, which is far away from the fixed contact, is abutted against the limiting table.

Optionally, when one surface of the movable contact plate, which is far away from the fixed contact, is abutted against the limiting table, the distance from the movable contact plate to the fixed contact is between 3.5mm and 6.0 mm.

Optionally, the circuit breaker base further comprises a flexible connecting line connected between the wiring board and the fixed contact.

Optionally, the pedestal is close to the one side of circuit breaker body and outwards extends and is provided with two fixed blocks, and two fixed blocks and pedestal enclose to close and form the grafting chamber, and the circuit breaker body is used for pegging graft in the grafting chamber.

Optionally, at least one fixed block is provided with a locking mechanism, and the locking mechanism is used for locking the circuit breaker body in the insertion cavity or unlocking the circuit breaker body and the circuit breaker base.

Optionally, the locking mechanism comprises a limiting block, a rotating rod connected with one end of the limiting block, and a handle fixedly connected to the outer wall of the rotating rod; a second limiting groove is formed in one surface, far away from the seat body, of the fixing block, the limiting block is connected in the second limiting groove in a sliding mode and can rotate in the second limiting groove; one end of the rotating rod, which is far away from the limiting block, is inserted into a clamping groove of the circuit breaker body, the handle rotates to a position between the fixed block and the circuit breaker and is abutted against the fixed block, and the locking mechanism locks the circuit breaker body; the handle rotates to the top of fixed block, and the stopper is located the one end that the circuit breaker body was kept away from in the second spacing groove, and locking mechanical system unblock circuit breaker body.

Optionally, the circuit breaker base further comprises an insulating base connected in the base body in a sliding manner, the insulating base is provided with a jack, and the wiring board is located in the jack; when the circuit breaker body is separated from the wiring board, the insulating base covers the outer peripheral wall of the wiring board; when the circuit breaker body and the wiring board are connected in an inserting mode, the circuit breaker body drives the insulating base to slide towards the direction far away from the circuit breaker body, and the wiring board extends out of the jack.

Optionally, the circuit breaker base further comprises a second elastic member, one end of the second elastic member is connected with the insulating base, and the other end of the second elastic member is connected with the base body; the insulating seat is driven to move towards the direction far away from the circuit breaker body, and the second elastic piece is pressed to store energy.

In another aspect of the utility model, a circuit breaker is provided, which includes a circuit breaker body and the above circuit breaker base, wherein the circuit breaker body is provided with a mating end, and the circuit breaker body is inserted into the insertion end of the circuit breaker base through the mating end.

The beneficial effects of the utility model include:

the circuit breaker base comprises a base body with an accommodating groove, a movable contact plate, a static contact and a plug-in end, wherein the movable contact plate is connected in the accommodating groove in a sliding mode; the power supply end is electrically connected with the static contact, and the inserting end is used for being matched with and inserted into the matching end on the circuit breaker body; when the breaker body is separated from the plug-in terminal, the movable contact plate is in contact connection with the fixed contact; when the circuit breaker body is inserted into the inserting end, the circuit breaker body can drive the movable contact plate to move towards the direction far away from the fixed contact, so that the movable contact plate is disconnected from the fixed contact. Therefore, when the circuit breaker body is not inserted on the circuit breaker base, the movable contact plate is in contact connection with the fixed contact, at the moment, the external lead of the power supply end is electrically connected with the fixed contact, the fixed contact is electrically connected with the movable contact plate, and the circuit breaker base is electrified; when the circuit breaker body is inserted on the circuit breaker base, the circuit breaker body drives the movable contact plate to be separated from the fixed contact, at the moment, the fixed contact and the movable contact plate of the circuit breaker base are disconnected, and the circuit breaker base is powered off. The external lead is electrically connected with the circuit breaker body through the plug-in end, and the circuit breaker body is electrified at the moment, so that the circuit is protected. When the circuit breaker body is inserted on the circuit breaker base, the circuit breaker base is powered off, and the circuit breaker body is adopted to protect a circuit; when the breaker body is damaged and needs to be replaced, the breaker body is pulled out, and the breaker base can still be electrified, so that normal electricity utilization of a user is guaranteed. So, the circuit breaker base that this application provided can be convenient for maintain, and need not to break off the master switch when maintaining.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker base and a circuit breaker body according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a circuit breaker base according to an embodiment of the present invention;

fig. 3 is a second schematic structural diagram of a circuit breaker base according to an embodiment of the utility model;

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

fig. 5 is a second schematic structural diagram of a circuit breaker base and a circuit breaker body according to an embodiment of the utility model;

FIG. 6 is an enlarged view of a portion of FIG. 2 at A;

fig. 7 is a partial enlarged view at B of fig. 5;

fig. 8 is a schematic structural diagram of an insulating base according to an embodiment of the present invention.

Icon: 10-a seat body; 11-a receiving groove; 12-a limit table; 13-wiring holes; 14-a wiring frame; 20-a movable touch plate; 21-a first elastic member; 30-static contact; 40-patch panel; 50-a support; 60-flexible connecting lines; 70-fixing block; 71-a plug cavity; 72-a second limit groove; 80-a locking mechanism; 81-a limiting block; 82-rotating rods; 83-a handle; 90-an insulating base; 91-a jack; 92-a second elastic member; 93-convex; 200-a circuit breaker body; 210-a plug groove; 220-clamping groove; 230-first limiting groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the present embodiment provides a circuit breaker base, which includes a base body 10 having an accommodating slot 11, a movable contact plate 20 slidably connected in the accommodating slot 11, a fixed contact 30 fixedly connected in the accommodating slot 11, and an inserting end disposed on the base body 10; the power supply end is electrically connected with the static contact 30, and the plug-in end is used for being matched with and plugged in the matching end on the circuit breaker body 200; when the breaker body 200 is separated from the plug-in terminal, the movable contact plate 20 is in contact connection with the fixed contact 30; when the circuit breaker body 200 is plugged into the plugging end, the circuit breaker body 200 can drive the movable contact plate 20 to move towards a direction away from the fixed contact 30, so that the movable contact plate 20 is disconnected from the fixed contact 30. The circuit breaker base can be convenient to maintain, and a main switch does not need to be disconnected during maintenance.

Referring to fig. 2 and 3, the base 10 has an accommodating groove 11, and the movable contact plate 20 and the fixed contact 30 are disposed in the accommodating groove 11.

For example, referring to fig. 2 and 3, in the present embodiment, the plug end may be a wiring board 40 connected to the housing 10, and the mating end is a plug slot 210 that is plugged into and unplugged from the wiring board 40. It should be understood that this is only an example given in the present application, and in other embodiments, the positions of the terminal block 40 and the socket 210 may be interchanged, that is, the terminal block 40 is disposed on the circuit breaker body 200, and the socket 210 is disposed on the housing 10. The specific setting mode adopted by the skilled person in the art can be selected by the skilled person according to the needs, and the application is not particularly limited. It should be noted that, for ease of understanding and illustration, the following description will be given by taking the plug terminal as the wiring board 40 connected to the housing 10, and the mating terminal as the plug slot 210 for mating with and plugging into the wiring board 40.

In addition, in the present embodiment, the fixed contact 30 may be directly connected to the wire frame 14, so as to be electrically connected to the power supply terminal through the wire frame 14; in addition, the stationary contact 30 may also be connected to the wire frame 14 through the plug terminal to achieve electrical connection with the power supply terminal. The present application does not limit the electrical connection manner, as long as the stationary contact 30 is electrically connected to the power supply terminal. The following description will be mainly explained on the basis that the stationary contact 30 is electrically connected to the power supply terminal through the wiring board 40.

It should be noted that, in this embodiment, the circuit breaker base further includes a wiring hole 13 provided on the base body 10, and a wiring frame 14 located in the base body 10 and connected to the wiring hole 13. Thus, the user can insert the external wires of the power supply terminal into the wire frame 14 through the wire holes 13, and then electrically connect the external wires with the wiring board 40 through the wire frame 14 (in this embodiment, one end of the wiring board 40 extends out of the housing 10, and the other end thereof extends into the wire frame 14).

In the present embodiment, the wiring board 40 is also electrically connected to the power supply terminal, and the stationary contact 30 is electrically connected to the power supply terminal through the wiring board 40. The circuit breaker base also illustratively includes a flexible connecting cord 60 connected between the terminal block 40 and the stationary contact 30. Thus, the terminal block 40 can be electrically connected to the stationary contact 30 through the flexible connecting wire 60. The specific material of the flexible connecting wire 60 can be selected by those skilled in the art, and the present application is not limited thereto. Of course, in other embodiments, the flexible connecting wire 60 may not be provided, and the wiring board 40 may be extended to be directly connected to the fixed contact 30; or the stationary contact 30 and the wiring board 40 may be connected by a conductive sheet. It should be understood that the above electrical connection form of the wiring board 40 and the fixed contact 30 is only an example, and those skilled in the art can select an appropriate manner according to actual needs.

In the present embodiment, the movable contact plate 20 is slidably connected to the base 10 and can slide up and down in the accommodating groove 11 of the base 10, and the fixed contact 30 is fixedly connected to the accommodating groove 11 of the base 10, as shown in fig. 3 and 4.

Referring to fig. 4, when the circuit breaker body 200 is not connected to the circuit breaker base in a plugging manner, the circuit breaker base is in an initial state, the movable contact plate 20 is in contact with the fixed contact 30, the external conductor is electrically connected to the wiring board 40 through the wiring frame 14, the wiring board 40 is electrically connected to the fixed contact 30 through the flexible connecting wire 60, the fixed contact 30 is electrically connected to the movable contact, and the circuit breaker base is in a power-on state; referring to fig. 3 and 5, when the circuit breaker body 200 is connected to the circuit breaker base in a plugging manner, at this time, the circuit breaker body 200 acts on the movable contact plate 20 of the circuit breaker base to separate the movable contact plate 20 and the fixed contact 30, so that an external conductor is electrically connected to the wiring board 40, the wiring board 40 is electrically connected to the fixed contact 30, and the fixed contact 30 is disconnected from the movable contact plate 20, so that the circuit breaker base is not powered on. On the contrary, the external conductor is electrically connected with the wiring board 40 through the wiring frame 14, the wiring board 40 is connected with the insertion groove 210 of the circuit breaker body 200 in an insertion mode, and the insertion row is arranged in the insertion groove 210, so that the external conductor can be electrically connected with the circuit breaker body 200, and therefore when the circuit breaker body 200 is inserted on the circuit breaker base, the circuit breaker base is not electrified, the circuit breaker body 200 is electrified, and therefore the circuit can be protected through the circuit breaker body 200.

To sum up, the circuit breaker base provided by the present application includes a base body 10 having an accommodating groove 11, a movable contact plate 20 slidably connected in the accommodating groove 11, a fixed contact 30 fixedly connected in the accommodating groove 11, and an inserting end arranged on the base body 10; the power supply end is electrically connected with the static contact 30, and the plug-in end is used for being matched with and plugged in the matching end on the circuit breaker body 200; when the breaker body 200 is separated from the plug-in terminal, the movable contact plate 20 is in contact connection with the fixed contact 30; when the circuit breaker body 200 is plugged into the plugging end, the circuit breaker body 200 can drive the movable contact plate 20 to move towards a direction away from the fixed contact 30, so that the movable contact plate 20 is disconnected from the fixed contact 30. Thus, when the circuit breaker body 200 is not plugged on the circuit breaker base, the movable contact plate 20 is in contact connection with the fixed contact 30, at this time, an external lead of the power supply end is electrically connected with the fixed contact 30 through the plugging end, the fixed contact 30 is electrically connected with the movable contact plate 20, and the circuit breaker base is electrified; when the circuit breaker body 200 is inserted into the circuit breaker base, the circuit breaker body 200 drives the movable contact plate 20 to be separated from the fixed contact 30, at this time, the fixed contact 30 and the movable contact plate 20 of the circuit breaker base are disconnected, and the circuit breaker base is powered off. The external conductor is electrically connected with the circuit breaker body 200 through the plug-in end, and the circuit breaker body 200 is electrified at the moment, so that the circuit is protected. When the breaker body 200 is inserted on the breaker base, the breaker base is powered off, and the breaker body 200 is adopted to protect the circuit; when the breaker body 200 is damaged and needs to be replaced, the breaker body 200 is pulled out, and the breaker base can still be electrified, so that normal electricity utilization of a user is guaranteed. So, the circuit breaker base that this application provided can be convenient for maintain, and need not to break off the master switch when maintaining.

As shown in fig. 3 and 4, the circuit breaker base further includes a first elastic member 21, one end of the first elastic member 21 is connected to the bottom of the accommodating groove 11, and the other end is connected to the movable contact plate 20; the movable contact plate 20 is driven to move away from the fixed contact 30, and the first elastic element 21 is compressed to store energy. Thus, when the circuit breaker body 200 is pulled out from the circuit breaker base, the movable contact plate 20 can move towards the fixed contact 30 under the energy releasing action of the first elastic element 21, and then is in contact connection with the fixed contact 30.

For example, the first elastic member 21 may be a spring for providing an upward moving force to the movable contact plate 20, and under the action of the spring, the movable contact plate 20 and the fixed contact 30 can be reliably contacted. It should be noted that, when the circuit breaker body 200 is not plugged into the circuit breaker base, the movable contact plate 20 is in contact connection with the fixed contact 30, and the first elastic element 21 is in a free state; when the circuit breaker body 200 is inserted into a circuit breaker base, the movable contact plate 20 drives the movable contact plate 20 to move towards a direction away from the fixed contact 30 under the action of the circuit breaker body 200, and at the moment, the first elastic piece 21 is pressed to store energy; when the circuit breaker body 200 is pulled out from the circuit breaker base, the first elastic element 21 drives the movable contact plate 20 to reset under the action of energy release, so that the movable contact plate 20 is continuously in contact connection with the static contact 30.

The application provides a circuit breaker base's theory of operation as follows:

an initial state: when the circuit breaker body 200 is separated from the circuit breaker base (referred to as an initial state), at this time, the movable contact plate 20 and the fixed contact 30 are in contact connection, the external conductor is electrically connected to the wiring board 40 through the wiring frame 14, the wiring board 40 is electrically connected to the fixed contact 30 through the flexible connecting wire 60, the fixed contact 30 is electrically connected to the movable contact plate 20 (at this time, the first elastic member 21 is in a free state), and the circuit breaker base is powered on, as shown in fig. 4.

The working state is as follows: when the inserting groove 210 of the circuit breaker body 200 is connected to the wiring board 40 of the circuit breaker base in a plugging manner (i.e. when the circuit breaker body 200 is inserted into the circuit breaker base, the working state is for short), at this time, the circuit breaker body 200 can drive the movable contact plate 20 to move towards the direction away from the fixed contact 30 (at this time, the first elastic member 21 is compressed to store energy), the movable contact plate 20 is separated from the fixed contact 30, and at this time, the circuit breaker base is not powered on, as shown in fig. 3.

When the breaker body 200 is pulled out: when the circuit breaker body 200 needs to be maintained and overhauled, in the process of pulling the circuit breaker body 200 out of the circuit breaker base, the movable contact plate 20 moves upwards under the energy releasing action of the first elastic piece 21 until the movable contact plate is in contact connection with the fixed contact 30, at the moment, the circuit breaker body 200 is connected with the circuit breaker base in parallel, and meanwhile, the circuit breaker body is electrified, and at the moment, the load is not powered off; then, the breaker body 200 continues to be pulled out upward until the breaker body 200 is separated from the breaker base, at which time, the breaker body 200 is powered off and the breaker base is powered on. So, after circuit breaker body 200 maintains, peg graft the back on the circuit breaker base with new circuit breaker body 200, will continue to carry out safety protection by circuit breaker body 200 with the electric wire netting, and the circuit breaker base only is for changing circuit breaker body 200 the interim period, satisfies the demand of not cutting off the power supply in short time, and not as long-term power consumption safety protection.

Referring to fig. 1 to 4, in the present embodiment, the circuit breaker base further includes a supporting member 50, and the supporting member 50 is connected to the movable contact plate 20; when the circuit breaker body 200 is plugged on the terminal block 40, the circuit breaker body 200 can drive the movable contact plate 20 to move towards a direction away from the fixed contact 30 through the supporting member 50.

Referring to fig. 3 and 4, the supporting member 50 is partially located in the receiving groove 11 in the base 10, and partially extends from the receiving groove 11. The portion of the supporting member 50 extending out of the accommodating groove 11 can be used for performing a limit clamping with the circuit breaker body 200.

Specifically, the circuit breaker body 200 may be provided with a first limiting groove 230 at a position corresponding to the support 50. One end of the supporting member 50 close to the breaker body 200 extends out of the accommodating groove 11; when the circuit breaker body 200 is plugged on the wiring board 40, the circuit breaker body 200 can act on the supporting member 50 to drive the movable contact plate 20 to move towards a direction away from the fixed contact 30. It should be noted that, the supporting member 50 may further be matched with the first limiting groove 230 on the circuit breaker body 200, so that the circuit breaker body 200 and the circuit breaker base can be conveniently aligned and matched when being plugged together by the supporting member 50.

In addition, when the circuit breaker base is provided with the supporting member 50, the first elastic member 21 may be connected to a side of the supporting member 50 away from the circuit breaker body 200, or may be connected to the movable contact plate 20, which is not limited in the present application. Specifically, in practical applications, a person skilled in the art can select the specific application according to actual needs.

Referring to fig. 3 and fig. 4, optionally, a limiting table 12 is disposed in the accommodating groove 11, and the limiting table 12 is located between the bottom of the accommodating groove 11 and the static contact 30; when the circuit breaker body 200 is plugged on the wiring board 40, one surface of the movable contact plate 20 far away from the fixed contact 30 is abutted against the limit table 12.

That is, the limiting table 12 is disposed at the middle region of the accommodating groove 11, so that the moving stroke of the movable contact plate 20 can be limited within a certain range by the limiting table 12. For example, in the present embodiment, the moving stroke of the moving contact plate 20 is limited between the limit stage 12 and the fixed contact 30, that is, the moving contact plate 20 can move up and down between the limit stage 12 and the fixed contact 30.

Optionally, in this embodiment, when a surface of the movable contact plate 20 away from the fixed contact 30 abuts against the limiting table, a distance between the movable contact plate 20 and the fixed contact 30 is between 3.5mm and 6.0 mm. Thus, the safety when the fixed contact 30 and the movable contact plate 20 are disconnected can be ensured.

Referring to fig. 1 and fig. 2, in the present embodiment, two fixing blocks 70 are outwardly extended from one surface of the base 10 close to the circuit breaker body 200, the two fixing blocks 70 and the base 10 enclose to form a plugging cavity 71, and the circuit breaker body 200 is used for being plugged into the plugging cavity 71.

The two fixing blocks 70 are both located on one surface of the seat 10 close to the circuit breaker body 200, and the two fixing blocks 70 are distributed at two opposite ends of the seat 10, as shown in fig. 2.

It should be noted that the two fixing blocks 70 and the seat body 10 may be integrally formed, or may be separate parts, and then connected together. Specifically, the person skilled in the art may decide on the case, without the application being restricted.

Referring to fig. 2 and 5, optionally, a locking mechanism 80 is disposed on at least one of the fixing blocks 70, and the locking mechanism 80 is used to lock the circuit breaker body 200 in the insertion cavity 71 or unlock the circuit breaker body 200 from the circuit breaker base. By arranging the locking mechanism 80, the breaker body 200 can be locked on the breaker base when the breaker body 200 is inserted on the breaker base, so that the breaker body 200 is prevented from being separated from the breaker base due to misoperation; when the circuit breaker body 200 needs to be pulled out from the circuit breaker base, the circuit breaker body 200 can be unlocked on the circuit breaker base through the locking mechanism 80, so that the circuit breaker body 200 can be conveniently detached. Thus, the plugging and unplugging of the circuit breaker body 200 can avoid the risk of misoperation.

Referring to fig. 6 and 7, in the present embodiment, the locking mechanism 80 includes a limiting block 81, a rotating rod 82 connected to one end of the limiting block 81, and a handle 83 fixedly connected to an outer wall of the rotating rod 82; a second limiting groove 72 is formed in one surface, away from the seat body 10, of the fixing block 70, the limiting block 81 is connected in the second limiting groove 72 in a sliding manner, and the limiting block 81 can rotate in the second limiting groove 72; one end of the rotating rod 82, which is far away from the limiting block 81, is inserted into the clamping groove 220 of the circuit breaker body 200, the handle 83 rotates to a position between the fixing block 70 and the circuit breaker and is abutted against the fixing block 70, and the locking mechanism 80 locks the circuit breaker body 200; the handle 83 rotates to the upper side of the fixing block 70, the limiting block 81 is located at one end, far away from the circuit breaker body 200, of the second limiting groove 72, and the locking mechanism 80 unlocks the circuit breaker body 200.

Thus, when the circuit breaker body 200 is required to be inserted into the circuit breaker base, the handle 83 is shifted, the handle 83 is rotated to the position above the second limiting groove 72 (namely, the side of the fixing block 70, which is far away from the base body 10), and then the limiting block 81 is driven to slide in the second limiting groove 72, so that the limiting block 81 slides towards the direction far away from the circuit breaker body 200, and thus, the locking mechanism 80 can be accommodated in the second limiting groove 72, and further, the installation of the circuit breaker body 200 on the circuit breaker base is avoided, and the unlocking of the circuit breaker body 200 and the circuit breaker base is realized; when the circuit breaker body 200 is inserted into the circuit breaker base, the limiting block 81 can be moved towards the direction close to the circuit breaker body 200 to slide, so that the handle 83 moves out of the second limiting groove 72 from the position right above the second limiting groove 72, at this time, one end of the rotating rod 82 far away from the limiting block 81 can be inserted into the clamping groove 220 of the circuit breaker body 200, at this time, the handle 83 is moved by being shifted again, so that the handle 83 rotates to the position between the fixing block 70 and the circuit breaker body 200 (as shown in fig. 7), at this time, the locking of the circuit breaker body 200 and the circuit breaker base can be realized through the locking mechanism 80.

Referring to fig. 3, fig. 4 and fig. 8, in the present embodiment, the circuit breaker base may further include an insulating base 90 slidably connected in the base body 10, the insulating base 90 is provided with a jack 91, and the wiring board 40 is located in the jack 91; when the circuit breaker body 200 is separated from the wiring board 40, the insulating base 90 covers the outer peripheral wall of the wiring board 40; when the circuit breaker body 200 and the terminal block 40 are inserted, the circuit breaker body 200 drives the insulating base 90 to slide in a direction away from the circuit breaker body 200, and the terminal block 40 extends out of the insertion hole 91.

The insulating base 90 is slidably connected in the base body 10, so that the insulating base 90 can slide relative to the base body 10 to extend out of the base body 10, thereby performing insulating protection on the exposed part of the wiring board 40; and can be retracted into the housing 10 to expose the terminal block 40.

Illustratively, the circuit breaker base further comprises a second elastic member 92, one end of the second elastic member 92 is connected with the insulating base 90, and the other end is connected with the base body 10; the insulating base 90 is driven to move away from the circuit breaker body 200, and the second elastic member 92 is compressed to store energy.

That is, under the action of the second elastic element 92, the insulating base 90 extends out of the base 10 and can cover the wiring board 40, so as to protect the wiring board 40; when the circuit breaker body 200 needs to be plugged on a circuit breaker base, the circuit breaker body 200 acts on the insulating seat 90, the insulating seat 90 can be driven to move towards a direction away from the circuit breaker body 200, at the moment, the insulating seat 90 retracts to expose the wiring board 40 so as to facilitate the electric connection between the wiring board 40 and the circuit breaker body 200, and at the moment, the second elastic piece 92 is pressed to store energy.

Alternatively, the second elastic member 92 may be a spring. In order to prevent the insulating base 90 from separating from the base 10, in this embodiment, a limiting member for limiting the position may be further disposed on the insulating base 90. Specifically, the structure of the position limiting element is not specifically limited in this application, and a person skilled in the art can select an appropriate structure by himself or herself. For example, a protrusion 93 may be provided at an end of the insulating holder 90 away from the circuit breaker body 200, as shown in fig. 8.

In addition, in this embodiment, the one side that circuit breaker body 200 was kept away from to the circuit breaker base can also be equipped with the spout, like this, can be convenient for the circuit breaker base and the slide rail cooperation in the switch board, and then the circuit breaker base of being convenient for installs in the switch board. It should be understood that, when the switch board internal position spout, then correspondingly, what the bottom of circuit breaker base set up is the slide rail.

In another aspect of the present invention, a circuit breaker is provided, which includes a circuit breaker body 200 and the above-mentioned circuit breaker base, wherein the circuit breaker body 200 is provided with a mating end, and the circuit breaker body 200 is plugged into the plugging end of the circuit breaker base through the mating end. Since the specific structure of the circuit breaker base and the structure of the circuit breaker body 200 have been described in detail in the foregoing, the detailed description of the present application is omitted.

The above description is only an alternative embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

Claims (14)

1. A circuit breaker base is characterized by comprising a base body with an accommodating groove, a movable contact plate, a static contact and a plug-in end, wherein the movable contact plate is connected in the accommodating groove in a sliding manner; the power supply end is electrically connected with the static contact, and the inserting end is used for being matched with and inserted into the matching end on the circuit breaker body;

when the breaker body is separated from the plug-in terminal, the movable contact plate is in contact connection with the fixed contact; when the circuit breaker body is inserted into the inserting end, the circuit breaker body can drive the movable contact plate to move towards the direction far away from the static contact, so that the movable contact plate is disconnected with the static contact.

2. The circuit breaker base of claim 1, wherein the mating end is a terminal block attached to the base body, and the mating end is a slot that mates with the terminal block.

3. The circuit breaker base according to claim 2, further comprising a first elastic member, one end of the first elastic member being connected to the bottom of the receiving groove, and the other end thereof being connected to the movable contact plate; the movable contact plate is driven to move towards the direction far away from the fixed contact, and the first elastic piece is pressed to store energy.

4. The circuit breaker base of claim 2 further comprising a support connected to the movable contact plate; when the circuit breaker body is inserted on the wiring board, the circuit breaker body can drive the movable contact plate to move towards the direction far away from the fixed contact through the supporting piece.

5. The circuit breaker base of claim 4, wherein an end of the supporting member near the circuit breaker body protrudes out of the receiving groove; when the circuit breaker body is inserted in the wiring board, the circuit breaker body can act on the supporting piece to drive the movable contact plate to move towards the direction far away from the fixed contact.

6. The circuit breaker base of claim 2, wherein the terminal block is electrically connected to the power supply terminal, and the stationary contact is electrically connected to the power supply terminal through the terminal block.

7. The circuit breaker base according to any one of claims 2 to 6, wherein a limiting platform is disposed in the containing groove, and the limiting platform is located between the bottom of the containing groove and the fixed contact; when the circuit breaker body is inserted on the wiring board, one surface of the movable contact plate, which is far away from the fixed contact, is abutted to the limiting table.

8. The circuit breaker base of claim 7, wherein when a surface of the movable contact plate away from the stationary contact abuts against the limiting table, a distance between the movable contact plate and the stationary contact is between 3.5mm and 6.0 mm.

9. The circuit breaker base according to any one of claims 2 to 6, wherein two fixing blocks extend outwards from a surface of the base body close to the circuit breaker body, the two fixing blocks and the base body enclose a plugging cavity, and the circuit breaker body is configured to be plugged into the plugging cavity.

10. The circuit breaker base of claim 9, wherein at least one of the fixed blocks is provided with a locking mechanism, and the locking mechanism is used for locking the circuit breaker body in the insertion cavity or unlocking the circuit breaker body and the circuit breaker base.

11. The circuit breaker base of claim 10, wherein the locking mechanism comprises a stopper, a rotating rod connected with one end of the stopper, and a handle fixedly connected to an outer wall of the rotating rod; a second limiting groove is formed in one surface, far away from the seat body, of the fixing block, the limiting block is connected in the second limiting groove in a sliding mode, and the limiting block can rotate in the second limiting groove;

one end, far away from the limiting block, of the rotating rod is inserted into a clamping groove of the circuit breaker body, the handle rotates to a position between the fixing block and the circuit breaker and is abutted against the fixing block, and the circuit breaker body is locked by the locking mechanism; the handle rotates extremely the top of fixed block, the stopper is located the second spacing groove is kept away from the one end of circuit breaker body, locking mechanical system unblock the circuit breaker body.

12. The circuit breaker base according to any one of claims 2 to 6, further comprising an insulating base slidably connected in the base body, wherein the insulating base is provided with a jack, and the wiring board is located in the jack; when the circuit breaker body is separated from the wiring board, the insulating base covers the outer peripheral wall of the wiring board; when the circuit breaker body and the wiring board are spliced, the circuit breaker body drives the insulating base to move towards the direction far away from the circuit breaker body to slide, and the wiring board extends out of the jack.

13. The circuit breaker base of claim 12, further comprising a second elastic member, wherein one end of the second elastic member is connected to the insulating base, and the other end of the second elastic member is connected to the base; the insulating seat is driven to move towards the direction far away from the breaker body, and the second elastic piece is pressed to store energy.

14. A circuit breaker, characterized in that, including the circuit breaker body and the circuit breaker base of any one of claims 1 to 13, be equipped with the cooperation end on the circuit breaker body, the circuit breaker body passes through the cooperation end grafting in the grafting of circuit breaker base is served.

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