CN220306185U - Circuit breaker - Google Patents

Abstract

The utility model discloses a circuit breaker, which comprises a shell, wherein a containing cavity is arranged in the shell, an arc extinguishing mechanism, an operating mechanism and a first circuit board are fixed in the containing cavity, the shell comprises a middle seat, a base and a circuit board frame which is open towards the upper side, the first circuit board is positioned in the circuit board frame, the circuit board frame is positioned between the middle seat and the base, the circuit board frame is positioned at one side of the operating mechanism far away from the arc extinguishing mechanism, and the top surface of the circuit board frame is propped against the middle seat; the utility model has the advantages of protecting effect and preventing free electrons from interfering with the first circuit board.

Description

Circuit breaker

Technical Field

The present utility model relates to a circuit breaker.

Background

When the movable contact assembly is matched with the static contact assembly, an electric arc is generated. The circuit breaker is internally provided with an arc extinguishing mechanism, and an arc extinguishing effect is formed through the arc extinguishing mechanism. However, in the actual use process, even if arc extinction is carried out through the arc extinction mechanism, the arc extinction mechanism can not completely treat all free electrons in the circuit breaker, and still a small part of free electrons are not treated, and the free electrons are positioned in the circuit breaker and can cause the damage of the circuit board if floating on the circuit board, so that the whole normal use of the circuit breaker is affected.

Disclosure of Invention

The utility model mainly solves the technical problem of providing a circuit breaker.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a circuit breaker, wherein, includes the casing, is equipped with in the casing and holds the chamber, holds the chamber and is fixed with arc extinguishing mechanism, operating device and first circuit board, and the casing includes well seat, base and towards upper shed's circuit board frame, and first circuit board is located circuit board frame, and circuit board frame is located between well seat and the base and circuit board frame is located one side that operating device kept away from arc extinguishing mechanism, and circuit board frame top surface offsets with well seat.

Through the setting of isolation protection structure, the effect of isolation protection has been formed, prevents that free electron from wagging on the first circuit board, has formed the protection effect, ensures the normal use of first circuit board.

The middle seat is provided with a first concave cavity, and the opening of the circuit board frame is embedded into the first concave cavity.

Through the setting of first cavity, form the fixed effect of embedding to on making the junction between circuit board frame and well seat or the base not being the horizontal position between well seat or the base, make between circuit board frame opening and well seat or the base form the ladder structure.

Wherein, be equipped with the spacer bar on the well seat, the spacer bar is located circuit grillage and is close to the one side of arc extinguishing mechanism, and the spacer bar is located circuit grillage open-ended horizontal extension direction.

The arrangement of the isolation ribs forms the effect of dislocation of height, forms double isolation, improves the isolation effect and prevents free electrons from entering the circuit board frame.

Wherein hold the intracavity and be fixed with zero sequence transformer and mount, mount part is located zero sequence transformer, and the mount stretches out zero sequence transformer part and holds the chamber and be detachable the connection, is equipped with at least three mutually independent first passageway in the mount, is equipped with the spacer block on the mount, and the spacer block is located circuit board frame opening and is close to the horizontal extension direction of arc extinguishing mechanism.

Through the setting of isolation piece, further improve the isolation effect, here isolation piece can be complementary with the isolation muscle, forms the upper and lower cooperation, forms dual effect of keeping apart with the lateral wall of circuit grillage, and here isolation piece also can be for crisscross structure with the isolation muscle, so has formed the effect of triple isolation. Moreover, the first channel in the fixing frame is used for forming an isolation effect between the first channel and the second channel, the conducting strip can penetrate through the first channel to form a monitoring effect, and secondly, the conducting strip is fixed with the accommodating cavity through the fixing frame to prevent the fixing frame from being separated from the zero sequence transformer in the transportation or turnover process, so that a fixing effect is formed between the conducting strip and the accommodating cavity through the fixing frame.

The housing comprises an upper cover, a middle seat, a base and a bottom plate, wherein the accommodating cavity comprises a first accommodating cavity formed by matching the upper cover with the middle seat, a second accommodating cavity formed by matching the middle seat with the base, a third accommodating cavity formed by matching the base with the bottom plate, and the zero sequence transformer and the first circuit board are both positioned in the second accommodating cavity; the base is provided with a first through hole which is communicated with the second accommodating cavity and the third accommodating cavity, and the zero sequence transformer part penetrates through the first through hole and stretches into the third accommodating cavity.

By adopting the structure, the transformer can be partially embedded into the third accommodating cavity, so that the height of the transformer in the second accommodating cavity is reduced, and the height of the whole circuit breaker is reduced. Through this kind of structure setting for the height of whole circuit breaker can reduce 25mm at most, thereby realized the effect of being convenient for installation, satisfied most service environment.

The system further comprises a control module, a carrier module and a second circuit board; the upper cover is provided with a second concave cavity, the bottom surface of the second concave cavity is provided with a plurality of second through holes, the control module and the carrier module are both positioned in the second concave cavity, the control module part penetrates through the second through holes to form plug connection with the second circuit board, and the carrier module is positioned on the control module and forms plug connection with the control module.

By adopting the structure, the control module directly forms an electrical connection effect with the circuit board through plug connection, the carrier module is positioned on the control module, the electrical connection effect between the carrier module and the control module is formed through plug connection, and when the carrier module or the control module breaks down, the connection relationship can be released through plug connection, so that the replacement effect is realized.

The micro switch part extends into the second accommodating cavity and is positioned on the movement track of the operating mechanism in the second accommodating cavity.

The micro-switches form a signal transmission effect, the number of the micro-switches is two, two micro-switches transmit switching-on and switching-off signals, one micro-switch can also correspond to an internal signal, and the other micro-switch corresponds to an external signal (the communication of the Internet of things is realized through the cooperation of remote signaling).

The wire arranging device comprises at least one wire arranging device, a horizontal connection area of the first circuit board and the tripping mechanism is arranged in the shell, the wire arranging device is fixed on the inner wall of the connection area, and a third through hole for a wire to pass through is formed in one end of the inner side of the wire arranging device.

Through fixed reason line ware on the inner wall to make the wire between connection first circuit board and the tripping device form fixed effect, the wire can pass the through-hole, makes the wire fix on the inner wall of casing, and the wire can be fixed along the inner wall, has utilized marginal space, thereby has avoided the wire to interfere armature, traction lever, operating device.

The power supply board is provided with a first power connection end and a plurality of second power connection ends which are distributed at equal intervals, the first power connection end faces to one side of the power supply board and is provided with an electric connection layer matched with the power supply bolt, a first conducting strip and a second conducting strip which are electrically connected with the main loop are fixed in the shell, the power supply board passes through the power supply board and is connected and fixed with the first conducting strip, the power supply bolt is electrically connected with the electric connection layer, and the second power connection end is electrically connected with the second conducting strip.

Adopt this kind of structure setting, through getting the fixed effect of connection between electric bolt formation power strip and the first conducting strip, get electric bolt simultaneously and still formed the electric connection effect between power strip and the first conducting strip, saved the welding process, improved machining efficiency for electric connection is more stable, moreover, has saved a wire, makes the usage space increase.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of embodiment 1 of the present utility model;

fig. 3 is a partial enlarged view of a portion a in fig. 2;

FIG. 4 is a cross-sectional view of embodiment 1 of the present utility model at another angle;

FIG. 5 is a cross-sectional view of embodiment 1 of the present utility model at another angle;

fig. 6 is a partial enlarged view of the portion B in fig. 5;

FIG. 7 is a cross-sectional view of embodiment 1 of the present utility model at another angle;

FIG. 8 is a cross-sectional view of embodiment 1 of the present utility model at another angle;

FIG. 9 is a cross-sectional view of embodiment 1 of the present utility model at another angle;

FIG. 10 is a schematic view showing a partial structure of embodiment 1 of the present utility model;

FIG. 11 is a schematic view showing a partial structure of embodiment 1 of the present utility model;

FIG. 12 is a schematic view showing a partial structure of embodiment 1 of the present utility model;

FIG. 13 is a schematic view showing a partial structure of embodiment 1 of the present utility model;

fig. 14 is a partial structural schematic diagram of embodiment 1 of the present utility model;

FIG. 15 is a cross-sectional view of FIG. 14;

fig. 16 is a schematic structural diagram of the zero sequence transformer in embodiment 1 of the present utility model mated with the fixing frame;

FIG. 17 is a side view of FIG. 16;

fig. 18 is a schematic diagram of the wire organizer according to embodiment 1 of the present utility model;

fig. 19 is a schematic view of another form of the wire organizer according to embodiment 1 of the present utility model;

fig. 20 is a schematic structural diagram of another form of the wire organizer according to embodiment 1 of the present utility model;

fig. 21 is a schematic view showing the structure of the upper cover in embodiment 1 of the present utility model;

Fig. 22 is a schematic view showing the structure of the upper cover in embodiment 1 of the present utility model;

FIG. 23 is a schematic view showing the structure of a cover plate in embodiment 1 of the present utility model;

fig. 24 is a schematic structural diagram of the cooperation between the control module and the carrier module in embodiment 1 of the present utility model;

fig. 25 is a schematic structural view of a control module in embodiment 1 of the present utility model;

fig. 26 is a schematic structural diagram of a second circuit board in embodiment 1 of the present utility model.

Description of the embodiments

Examples

Referring to fig. 1-26, a circuit breaker includes a housing 1.

The housing 1 includes an upper cover 10, a middle seat 20, a base 30 and a bottom plate 40, wherein the upper cover 10 and the middle seat 20 cooperate to form a first accommodating cavity 50, and a second circuit board 501, a motor 502 and the like are mainly fixed in the first accommodating cavity 50.

The middle seat 20 and the base 30 are matched to form a second accommodating cavity 60, and a zero sequence transformer 601, a sampling transformer 602, a conducting strip 603, an operating mechanism, a tripping mechanism 604, an arc extinguishing mechanism 605 and the like are fixed in the second accommodating cavity 60.

The base 30 cooperates with the bottom plate 40 to form a third receiving cavity 70, the third receiving cavity 70 being adapted to cooperate with a stationary power plate 701 and a temperature sensor plate 702.

Therefore, the accommodation chambers in the housing 1 include the first accommodation chamber 50, the second accommodation chamber 60, and the third accommodation chamber 70.

In this embodiment, the upper cover 10, the middle base 20 and the base 30 are provided from top to bottom. The three parts are connected and fixed by bolts, and long bolts can directly pass through the three parts and can be fixed by two. The bottom plate 40 is embedded into the base 30 to realize the sealing effect of the lower opening of the base 30, and the fixing effect is realized between the bottom plate 40 and the base 30 by bolts.

The upper cover 10 is provided with a second cavity 101, where the second cavity 101 is specifically a hollow cuboid on the side of the upper cover 10 facing the middle seat 20, and the second cavity 101 is located in the cuboid. A plurality of second through holes 1011 are formed on the bottom surface of the second cavity 101, wherein the second through holes 1011 are used for matching with the second circuit board 501, and components on the control module 102 can pass through the second through holes 1011 to match with the second circuit board 501. Here only through the setting of second through-hole 1011, ensure that the bottom surface of second cavity 101 is not totally fretwork to make the better fixed effect of realization of control module 102, the bottom surface of second cavity 101 has still formed certain electrical isolation effect simultaneously, prevents to take place the creepage phenomenon.

An ear chamber 1012 communicated with the second concave cavity 101 is arranged at one corner of the second concave cavity 101, a second fixing hole 1013 is arranged in the ear chamber 1012, and the second fixing hole 1013 is used for being connected and fixed with the cover plate 80. The ear chamber 1012 is here in particular located on the side of the second recess 101 remote from the outer wall of the housing 1, i.e. the ear chamber 1012 is located on the inner side of the second recess 101. The ear chamber 1012 can also provide a fool-proof effect to prevent incorrect installation of the cover plate.

A plurality of first isolation ribs 1014 and second isolation ribs 1015 are disposed below the bottom surface of the second cavity 101, and the first isolation ribs 1014 pass through the first notches 5013 to form an isolation fixing effect. By the arrangement of the first isolation ribs 1014, two effects are formed, namely, an electrical isolation effect on the second circuit board 501 is achieved, and the creepage phenomenon is prevented; 2. the first spacer bead 1014 cooperates with the first notch 5013 to provide a positioning and securing effect. The second isolation rib 1015 is located in the middle of the second through hole 1011 to form an isolation effect of the connection position of the control module 102 and the second circuit board 501, and the second isolation rib 1015 is used for separating the second terminal 5012 to form an isolation effect. Here, the second circuit board 501 may further be provided with a spacer groove that cooperates with the second spacer rib 1015.

A waterproof groove 1016 is provided on the top surface of the second cavity 101. The waterproof groove 1016 is located on the periphery of the top surface of the second cavity 101 to form an isolation protection effect, and the waterproof groove 1016 is opened towards the outer side of the casing 1. The waterproof groove 1016 prevents water from flowing into the second cavity 101, thereby improving the protection effect. Further, a fixed sealing strip can be embedded in the waterproof groove 1016 to improve the waterproof level.

The upper cover 10 is further provided with a cover plate 80, and the cover plate 80 is used for closing the top surface of the second cavity 101. The cover plate 80 is arranged to form a sealing effect, the control module 102 and the carrier module 103 are hidden, the protection effect is improved, and misoperation is prevented. The cover plate 80 and the upper cover 10 can be fixed by a bolt connection or a snap connection.

In this embodiment, one side of the cover plate 80 is connected to the side wall of the second cavity 101, where the outer side wall of the cover plate 80 rotationally connected to the second cavity 101 refers to the side wall of the second cavity 101 close to the outer side. The other side of the cover plate 80 is provided with a fixing block 801 and a first lead sealing hole 802, the fixing block 801 is provided with a first fixing hole 803, the fixing block 801 is embedded into the earroom 1012, the first fixing hole 803 and the second fixing hole 1013 are arranged coaxially, and a bolt penetrates through the first fixing hole 803 and the second fixing hole 1013 to achieve a pre-fixing effect between the cover plate 80 and the upper cover 10. The fixing block 801 is embedded into the second cavity 101 to form the positioning and foolproof effects, and then the fixing effect is further improved through the fixing of the first fixing hole 803 and the second fixing hole 1013, and the fixing effect can be fastened through the anti-dismantling bolt.

The upper cover 10 is provided with a second lead sealing hole 1017 matched with the first lead sealing hole 802. Through the lead sealing setting, form the protection effect, prevent other people maloperation, influence actual result of use. Through the mode of rotation connection for after apron 80 is opened, apron 80 links to each other with upper cover 10 all the time, and apron 80 is not alone setting, prevents that apron 80 from losing.

The control module 102 is internally provided with a chip, a display screen, keys and the like with protection functions, the control module 102 is internally provided with a control circuit, when the detected main loop is abnormal, the control circuit controls the breaker to control the opening and closing of the opening and closing system, the abnormal occurrence of the main loop can be one or more of instantaneous, overvoltage, undervoltage, three-phase imbalance, over-temperature of a wiring terminal, island prevention, frequency and the like, and no matter the abnormal protection is the conventional technical means in the field. Therefore, this embodiment will not be described.

The control module 102 is arranged in a stepped manner, so that the control module 102 forms a stepped groove 1021, wherein the stepped groove 1021 faces the cover plate 80. The stepped groove 1021 is provided with a second detachable portion 1022 on the side facing the carrier module 103. The second disassembling portion 1022 is configured like a groove, and extends into the second disassembling portion 1022 through a finger or a tool, so as to achieve the disassembling effect of the control module 102. The second detachable unit 1022 is provided to be hidden, and the control module 102 can be detached only after the carrier module 103 is detached.

The lower end of the control module 102 is provided with a pin or a socket, so as to achieve an electrical connection effect with the second circuit board 501, and a person skilled in the art can select according to actual requirements to form a plug electrical connection effect.

In addition, it should be noted that the control module 102 itself is also formed by combining two components to form a cavity, where the two components may be secured by bolting or snap-fitting.

The carrier module 103 is a communication module, which is used for realizing communication between the circuit breaker and the outside, such as terminal equipment, and realizing functions of signal transmission and the like. A corresponding circuit board is also fixed in the carrier module 103.

The carrier module 103 is fixed on the stepped slot 1021, and the carrier module 103 and the control module 102 form a plug connection. The carrier modules 103 are provided with pins or sockets, and the stepped grooves 1021 of the control module 102 are also provided with pins or sockets, so that the electric connection effect between the carrier modules 103 is realized, and a person skilled in the art can select proper structural arrangement according to actual requirements, and only the electric connection effect of plugging and unplugging is required.

In this embodiment, the carrier module 103 is filled with the stepped slot 1021 such that the sidewall of the carrier module 103 is coplanar with the sidewall of the control module 102, and the top surface of the control module 102 is level with the top surface of the carrier module 103. The arrangement that the top surface is leveled is adopted, so that the overall aesthetic property is improved.

The carrier module 103 has a first detachable portion 1031 on its top surface. Through the setting of first dismantlement portion 1031, form and dismantle the effect, here first dismantlement portion 1031 can be for controlling two recesses, and the finger stretches into in the recess to realize dismantling the effect.

In addition, it should be noted that the carrier module 103 is also formed by combining two components to form a cavity, where the two components may be fixed by bolting or snap-fastening.

By adopting the structure, the control module 102 directly forms an electrical connection effect with the second circuit board 501 through plug connection, the carrier module 103 is positioned on the control module 102, the electrical connection effect between the carrier module 103 and the control module 102 is formed through plug connection, and when the carrier module 103 or the control module 102 fails, the connection relationship can be released through plug connection, so that the replacement effect can be realized, and the carrier module can be also subjected to hot plug.

A second wiring board 501, a third wiring board 503, and a motor 502 are fixed in the first accommodation chamber 50.

The second circuit board 501 is fixed on the bottom surface of the first accommodating cavity 50, where the fixing manner between the second circuit board 501 and the first accommodating cavity 50 may be bolt fixing. The second circuit board 501 may be formed together with the control module 102 located above to control the inside of the circuit breaker, receive signals for processing the control module 102, signal transmission of the carrier module 103, etc., where the function of the second circuit board 501 is to transmit sampled signals (such as temperature signals, current information, voltage information) to the control module 102, which is not described in the present embodiment. The second circuit board 501 is electrically connected to the first circuit board 606 to collect current information and operate the trip mechanism 604. The second circuit board 501 is electrically connected to the third circuit board 503, and forms signal transmission of the micro switch 5031. The second circuit board 501 is electrically connected to the power board 701 to form power transmission. The second wiring board 501 is electrically connected to the first temperature sensor board 7021 and the second temperature sensor board 7022, and outputs a temperature signal. The connection between the circuit boards can be the connection between the contact pins and the sockets, the connection can be the flat cable connection, and the direct welding between the boards can be realized.

The second wiring board 501 is also provided with a first terminal 5011 connected to the control module 102 in a plug-in manner and a second terminal 5012 connected to the power board 701 in the third housing chamber 70. The first terminal 5011 may be a pin or a socket, and forms a plug fit with the control module 102, so as to achieve a plug-in electrical connection effect. The second terminals 5012 are composed of a plurality of groups of wiring ports, in this embodiment, four groups of wiring ports are provided with first notches 5013 between each group of wiring ports, the number of the first notches 5013 is three, and the size and shape of the first notches 5013 are matched with those of the first isolation ribs 1014.

The third circuit board 503 is also located in the first accommodating cavity 50, the third circuit board 503 is directly connected with the second circuit board 501 through a pin socket, the third circuit board 503 is provided with a micro switch 5031, the micro switch 5031 partially extends into the second accommodating cavity 60, and the micro switch 5031 is located on a movement track of the operating mechanism in the second accommodating cavity 60. The micro switches 5031 form a signal transmission effect, wherein the number of the micro switches 5031 is two, and the two micro switches transmit switching signals, or one micro switch 5031 corresponds to an internal signal, and the other micro switch 5031 corresponds to an external signal (which is matched with remote signaling to realize communication of the Internet of things).

The motor 502 is electrically connected to the second circuit board 501 to form an electric operation effect, and the transmission structure between the motor 502 and the operation mechanism is in the prior art, so this embodiment is not described in detail.

A conducting strip 603, an operating mechanism, a tripping mechanism 604, an arc extinguishing mechanism 605, a zero sequence transformer 601, a sampling transformer 602 and a first circuit board 606 are fixed in the second accommodating cavity 60.

Conductive sheet 603 includes a first conductive sheet 6031 and a second conductive sheet 6032. In this embodiment, taking three-phase electricity as an example, the first conductive plates 6031 are correspondingly connected to the neutral line, the second conductive plates 6032 are correspondingly connected to the live line, so the number of the first conductive plates 6031 is two, and the number of the second conductive plates 6032 is six. One first conductive piece 6031 cooperates with three second conductive pieces 6032 to form an input terminal, and the other first conductive piece 6031 cooperates with three second conductive pieces 6032 to form an output terminal. In this embodiment, the power board 701 is matched with the first conductive piece 6031 and the second conductive piece 6032 on the output end. The input end and the output end are correspondingly arranged, the moving contact and the fixed contact are driven by the operation mechanism to realize the electric connection effect, and the arc extinguishing mechanism 605 is positioned at the connection position of the moving contact, which is the prior art, so the description is omitted in the embodiment.

The connection region 607 is located within the second receiving cavity 60, which specifically refers to the distance between the first circuit board 606 and the trip mechanism 604, where the connection region 607 is not a single plane, but rather a rectangular parallelepiped-like region, and the connection region 607 is a portion of the second receiving cavity 60.

The inner wall of the connection region 607 is provided with a first fixing groove 6071, where the inner wall specifically refers to the inner wall of the housing 1, that is, the side wall of the housing 1 near the outer side. The first fixing groove 6071 is located on the middle seat 20 and/or the base 30. In this embodiment, the first fixing groove 6071 may be located on the side of the middle seat 20 facing the base 30, or the first fixing groove 6071 may be located on the side of the base 30 facing the middle seat 20, or may be formed by matching the middle seat 20 and the base 30, so as to achieve the fixing effect of the wire organizer 608. The first fixing groove 6071 has a T-shaped structure, so that the wire organizer 608 is partially fixed in the first fixing groove 6071, and the rest portion extends into the first fixing groove 6071 and extends toward the inner side of the second accommodating chamber 60. When the first fixing groove 6071 is separately provided on the middle base 20 or the base 30, the two cooperate to form the fixing of the wire organizer 608. For example, when the first fixing groove 6071 is located on the base 30, the first fixing groove 6071 is adapted to the wire organizer 608, the bottom surface of the middle seat 20 abuts against the top surface of the wire organizer 608 to form a pressing and fixing structure, and when the depth of the first fixing groove 6071 is greater than the height of the wire organizer 608, small protruding points are arranged on the middle seat 20 and extend into the first fixing groove 6071 to abut against the top surface of the wire organizer 608, so that pressing and fixing can be achieved.

In this embodiment, the number of the first fixing grooves 6071 may be plural, and may be disposed on the inner wall at equal intervals, or may be disposed at different heights, or by different heights, to form different height adjustment of the wire arranging device 608.

The number of the wire managers 608 can be set according to the actual requirement, in this embodiment, only two wire managers 608 are taken as an example for description, and those skilled in the art can also increase or decrease according to the actual requirement. The two wire managers 608 may be parallel in height or may be arranged in height. In this embodiment, the two wire managers 608 have the same height, and the two wire managers 608 have the same structure.

The wire arranging device 608 is also provided with a T-shaped cross section, and the wire arranging device 608 is provided with a first fixing part 6081, and the first fixing part 6081 is inserted into the first fixing groove 6071 for fixing. The fixing manner between the first fixing portion 6081 and the first fixing groove 6071 may be that a clamping protrusion is disposed in the first fixing groove 6071, and the wire arranging device 608 horizontally extends into the first fixing groove 6071, and then horizontally and longitudinally moves, and fixing is achieved through the clamping protrusion.

The wire organizer 608 may also be an interference fit or a snap fit or barb fit with the first securing slot 6071.

The wire organizer 608 may also be directly adhered to the inner wall of the second receiving chamber 60 by an adhesive means.

The wire organizer 608 may also be directly attached to the inner wall of the second accommodating chamber 60 by bolting, thereby forming a fixing effect.

The wire organizer 608 extends to one end of the second accommodating cavity 60 and is provided with a third through hole 6082 through which the wire passes, where the third through hole 6082 may be opened vertically, i.e. an imaginary central axis of the third through hole 6082 is vertical to the horizontal plane, and the third through hole 6082 may be opened horizontally at two sides, i.e. the imaginary central axis of the third through hole 6082 is parallel to the horizontal plane. In this embodiment, the third through hole 6082 is preferably open on both sides horizontally.

As shown in fig. 19, the portion of the wire organizer 608 protruding into the second accommodation chamber 60 is of a ring-shaped closed structure. The third through hole 6082 is a hollow annular structure, the annular structure is a closed structure, and the wire directly passes through the third through hole 6082 to form a fixing effect.

As shown in fig. 20, the portion of the wire organizer 608 extending to the second accommodating cavity 60 is provided with a first hook portion 6083, the third through hole 6082 is located on the first hook portion 6083, the first hook portion 6083 extends towards the outer side of the housing 1, the third through hole 6082 formed by the first hook portion 6083 forms a similar acute angle triangle structure, when the wire is embedded into the first hook portion 6083, a fixing effect is formed, the wire is prevented from falling off, and the wire can be directly sleeved into the first hook portion 6083 from above for internal fixation. The first hook portion 6083 may be elastically disposed. It should be noted that, the direction of the first hook portion 6083 may be adjusted according to actual requirements, and only the wire may be fixed, so that the wire may not be cheaper in a large range, and the operating mechanism may be affected.

As shown in fig. 21, the portion of the wire organizer 608 extending out of the second accommodating chamber 60 is provided with a first hook 6083 and a second hook 6084, and the first hook 6083 and the second hook 6084 cooperate to form a third through hole 6082. Here, the first hook portion 6083 and the second hook portion 6084 are disposed up and down, the first hook portion 6083 is provided with a groove similar to an acute triangle, the second hook portion 6084 is located above the first hook portion 6083, the second hook portion 6084 is also provided with a groove similar to an acute triangle, the first hook portion 6083 and the second hook portion 6084 cooperate to form a third through hole 6082, and two grooves are formed in the third through hole 6082. Here, the first hook portion 6083 and the second hook portion 6084 are elastically disposed. Under normal condition, first hook 6083 and second hook 6084 laminating for third through hole 6082 forms enclosed construction, but under external force drive, can make both separation, when the wire is fixed, separate first hook 6083 and second hook 6084 laminating department, then transversely clip into third through hole 6082 with the wire level, and here the wire can be fixed in arbitrary inslot, thereby realizes fixed effect, prevents to take place to drop. When the external force message is applied, the two hook parts recover to deform, so that a sealing effect is formed.

By fixing the wire organizer 608 on the inner wall, thereby the wire connecting the first circuit board 606 and the trip mechanism 604 forms a fixing effect, the wire can pass through the third through hole 6082, so the wire is fixed on the inner wall of the housing 1, the wire can be fixed along the inner wall, and the edge space is utilized, thereby avoiding the wire from interfering with the armature, the traction rod, and the operating mechanism.

The zero sequence transformer 601 and the sampling transformer 602 are used for collecting current in a loop, so that the zero sequence transformer and the sampling transformer are positioned on a conducting strip 603 near the output end side.

The zero sequence transformer 601 is located on the left side of the center of the second accommodating chamber 60. The base 30 is provided with a fixing cavity 301 extending downwards, the fixing cavity 301 is provided with a first through hole 3011, and the first through hole 3011, the fixing cavity 301 and the third accommodating cavity 70 are communicated. In this embodiment, the bottom surface of the fixing cavity 301 abuts against the bottom plate 40. The zero sequence transformer 601 lower extreme is equipped with second fixed part 6011, and the size and the fixed chamber 301 adaptation of second fixed part 6011, and second fixed part 6011 stretches into to fixed chamber 301 in, and the lateral wall of second fixed part 6011 offsets with the limit wall of fixed chamber 301 this moment to realize fixed effect, the bottom surface of second fixed part 6011 offsets with bottom plate 40 simultaneously, makes zero sequence transformer 601 part imbed to the third and holds the intracavity 70, reduces the space that zero sequence transformer 601 held in the second and holds chamber 60, realizes the effect of reducing the height.

The zero sequence transformer 601 is of a hollow structure, which is the prior art, the second conductive sheet 6032 needs to pass through the zero sequence transformer 601, and the first conductive sheet 6031 can select whether to pass through according to actual requirements. The zero sequence transformer 601 and the first circuit board 606 are electrically connected to form the effect of signal transmission.

The fixing frame 90 is partially located in the zero sequence transformer 601, and at least three mutually independent first channels 901 are arranged in the fixing frame 90, in this embodiment, the number of the first channels 901 is four, and the first channels are respectively a first channel I9011, a first channel II 9012, a first channel III 9013 and a first channel IV 9014.

The first channel I9011 and the first channel II 9012 are respectively arranged on two sides, the first channel I9011 and the first channel II 9012 are matched with the inner wall of the zero sequence transformer 601 to form a channel which can be communicated only front and back, and two second conducting strips 6032 positioned on two sides respectively penetrate through the corresponding first channel I9011 and the corresponding first channel II 9012 to form a fixing effect. Here, the two second conductive plates 6032 positioned at two sides are similar to a horizontally placed shape of a Chinese character 'ji', and the top ends of the Chinese character 'ji' and the channels are positioned in the channels, so that the space between the second conductive plates 6032 is further increased, and the second conductive plates 6032 can also form the clamping and fixing effects.

The first channels iii 9013, iv 9014 are located on the upper and lower sides of the mount 90, the first channel iii 9013 is located below, and the second conductive plate 6032 located in the middle extends directly horizontally through the first channel iii 9013. The first channel III 9013 and the first channel IV 9014 are matched with the inner wall of the zero sequence transformer 601 to form a channel which can only be communicated front and back.

The first channel iv 9014 is used for being matched with the first conductive sheet 6031 to form a zero line monitoring effect. In addition, the connection between the first channel iii 9013 and the first channel iv 9014 is hollow, so that a horizontal and transverse reinforcing rib can be disposed at the hollow position to increase the strength of the fixing frame 90.

The rest of the fixing frame 90 extends out of the zero sequence transformer 601, one side of the fixing frame 90 is matched with the second fixing groove 302 on the base 30 to form a positioning and propping effect, the other side of the fixing frame 90 and the base 30 form a fastening structure, the fastening structure is specifically that a first inclined surface 303 is arranged on the base 30, a second inclined surface 902 is arranged on the fixing frame 90, and the first inclined surface 303 is matched with the second inclined surface 902 to form a fastening structure. By matching the two inclined planes, the inclined wedge effect is formed, so that the base 30 and the fixing frame 90 are firmly fixed, and falling off is not easy to occur. Thus forming the plug-in fixing effect between the fixing frame 90 and the base 30.

In addition, the fixing frame 90 and the base 30 may have a similar pin fixing structure, i.e. the fixing frame 90 is provided with pins, the base 30 is correspondingly provided with pin holes, and the two are matched to form a plug-in fixing effect.

The fixing frame 90 and the base 30 can be connected by bolts, that is, the fixing frame 90 extends to the outside of the zero sequence transformer 601 and is provided with fixing support legs, the fixing support legs are attached to the base 30, and the fixing effect is achieved through bolts.

Besides, the fixing frame 90 and the base 30 can be fixed by a buckle, that is, an elastic buckle is arranged on one side of the fixing frame 90 extending to the outside of the zero sequence transformer 601, a clamping groove is arranged on the base 30, and the elastic buckle is matched with the clamping groove to achieve a fixing effect.

The structure can realize the detachable fixing effect.

The fixed frame 90 is also provided with a spacer 903, and the top end of the spacer 903 abuts against the middle seat 20. The arrangement of the isolation block 903, firstly, increases the stability of the fixing frame 90, forms the clamping effect between the base 30 and the middle base 20, and the second isolation block 903 also forms the isolation protection effect, so as to prevent the normal use of the first circuit board 606 from being influenced by the ion dissociation. Here, the spacer 903 may be attached to the spacer ribs to form an up-down complement, form an up-down fit, and form a dual-isolation effect with the side wall of the circuit board frame 609, where the spacer 903 may also be in a staggered structure with the spacer ribs, that is, the spacer 903 extends toward the middle seat 20, the spacer ribs extend toward the base 30, the side wall of the circuit board frame 609 extends toward the middle seat 20, and the three are parallel to each other, where there is an intersection in the horizontal direction, and may be arranged at intervals, or may be attached to each other, so that a triple-isolation effect is formed.

In this embodiment, the fixing frame 90 is made of insulating material, and may be plastic.

With this structural arrangement, the zero sequence transformer 601 can be partially embedded into the third accommodating cavity 70, so that the height of the zero sequence transformer 601 in the second accommodating cavity 60 is reduced, and the height of the whole circuit breaker is reduced. Compared with the circuit breaker with the mutual inductor setting between well seat 20 and base 30, through this kind of structure setting, can reduce the holistic height of circuit breaker, for example 20mm, 25mm to realized the effect of being convenient for install, satisfied the operational environment of most operational environment or little space requirement.

The sampling transformer 602 may be provided separately corresponding to one conductive sheet 603, or may be in an integral structure, and connected and fixed with each other. In this embodiment, the sampling transformer 602 is an integral structure, i.e. three transformer components are disposed in the sampling transformer, three independent chambers 6021 are correspondingly formed, and one chamber 6021 corresponds to one second conductive sheet 6032. Here, the transformer assembly is further electrically connected with the first circuit board 606 to form a signal transmission effect, specifically, the circuit board frame 609 is disposed near the side of the sampling transformer 602 and is provided with an opening, and the pins on the transformer assembly can extend into the circuit board frame 609, so that an electrical connection effect with the first circuit board 606 is achieved.

The sampling transformer 602 is also located in the second accommodating cavity 60, and extends into the third accommodating cavity 70 through the fourth through hole 304, where the height of the sampling transformer 602 extending into the third accommodating cavity 70 can be adjusted according to practical requirements. The sampling transformer 602 is provided with a groove, the base 30 is provided with a supporting plate 305, and the supporting plate 305 is propped against the groove. The sampling transformer 602 may also be embedded in the third chamber 6021 to reduce the height of the sampling transformer 602 within the third chamber 6021. Here the support plate 305 is located between two adjacent fourth through holes 304.

Further, the base 30 is provided with three second channels 306 which are communicated with the cavity 6021, the three second channels 306 are respectively communicated with the first channels 901, and the three second channels 306 are communicated with the corresponding first channels 901 through the second channels 306, so that an isolation protection effect between the conducting strips 603 is formed. Here, two adjacent second channels 306 are disposed separately, and the second conductive sheet 6032 is located on the bottom surface of the second channels 306.

The first circuit board 606 is located on the right side of the operating mechanism, the arc extinguishing mechanism 605 is located on the left side of the operating mechanism, and the electric connection effect is achieved through the cooperation of the moving contact and the fixed contact, and the zero sequence transformer 601 is located between the first circuit board 606 and the operating mechanism because the zero sequence transformer 601 needs to detect three-phase balance in a circuit. Here, the tripping mechanism 604 is also connected with the first circuit board 606 through a wire, and the first circuit board 606 is also connected with the zero sequence transformer 601 and the sampling transformer 602. The first circuit board 606 is electrically connected with the second circuit board 501, in this embodiment, the side of the middle base 20 facing the base 30 is provided with a hollow quadrangular prism 202, the quadrangular prism extends towards the first circuit board 606, in this embodiment, the hollow quadrangular prism 202 is connected with the first cavity 201, so that the connection structure of the first circuit board 606 and the second circuit board 501 is sealed and fixed, free electrons cannot drift to the second circuit board 501, and meanwhile, the positioning effect of the middle base 20 and the base 30 during assembly is also achieved. The connection structure of the first circuit board 606 and the second circuit board 501 is that the pins are matched with the sockets.

The first circuit board 606 is provided with an isolation protection structure towards one side of the arc extinguishing mechanism 605. Through the setting of isolation protection structure, the effect of isolation protection is formed, and free electrons are prevented from drifting on the first circuit board 606, and the protection effect is formed, so that the normal use of the first circuit board 606 is ensured.

The isolation and protection structure may be that the middle base 20 and the base 30 cooperate to form an isolation cavity 610, and the first circuit board 606 is fixed in the isolation cavity 610.

The isolation and protection structure may also be that the first circuit board 606 is fixed on the circuit board frame 609, the circuit board frame 609 is connected and fixed with the base 30, and then the circuit board frame 609 and the middle base 20 cooperate to form the isolation cavity 610.

The isolation and protection structure may also be that the first circuit board 606 is fixed on the circuit board frame 609, the circuit board frame 609 is connected and fixed with the middle seat 20, and the circuit board frame 609 and the base 30 cooperate to form the isolation cavity 610.

In this embodiment, only the first circuit board 606 is located on the circuit board rack 609, and the circuit board rack 609 is connected and fixed with the base 30, that is, the circuit board rack 609 cooperates with the middle seat 20 and the base 30 to form the isolation cavity 610. On this basis, the person skilled in the art can also conceive of related structures from this structure, so the rest of the structure, the embodiment, will not be described.

The side of the middle seat 20 facing the base 30 is provided with a first concave cavity 201, that is, the first concave cavity 201 is located on the upper surface of the second accommodating cavity 60, a separation rib 2011 is arranged on the side, close to the operating mechanism, of the first concave cavity 201, the separation rib 2011 extends vertically downwards, and the lowest end of the separation rib 2011 exceeds the height of the rest positions of the bottom surface of the middle seat 20.

The circuit board frame 609 is provided with a third concave cavity 6091 which is opened towards the middle seat 20, the first circuit board 606 is positioned in the third concave cavity 6091 for fixing, and the depth of the third concave cavity 6091 can be selected according to actual requirements. The fixing manner between the first circuit board 606 and the circuit board frame 609 may be fastening or fastening by bolts, in this embodiment, a fastener is disposed in the third cavity 6091, and the first circuit board 606 is pre-fastened in the third cavity 6091 by the fastener. The opening of the circuit board rack 609 is embedded into the first cavity 201, so that the top end of the opening of the circuit board rack 609 abuts against the top surface of the first cavity 201, thereby realizing the embedding effect, and the matching position of the first cavity 201 and the third cavity 6091 is the opening of the isolation cavity 610. The isolation rib 2011 is located in the horizontal extending direction of the opening of the isolation cavity 610, and the isolation rib 2011 forms an isolation shielding effect in the horizontal direction. The arrangement of the isolation ribs 2011 forms the effect of dislocation, double isolation is formed, the isolation effect is improved, and free electrons are prevented from entering the isolation cavity 610.

The circuit board frame 609 and the base 30 are mutually independent, a supporting structure is arranged on the base 30, the circuit board frame 609 is located on the supporting structure, further, a fixing column 307 is arranged on the base 30, and bolts penetrate through the first circuit board 606 and the circuit board frame 609 to be connected and fixed with the fixing column 307. Through the bolt setting, the fixed effect between first circuit board 606, circuit board frame 609, the base 30 has been formed, holistic fixed strength is improved. The support structure may be four slots on the base 30, or may be matched with the sampling transformer 602, and the fixing strength is further improved through the pin connection between the transformer assembly and the first circuit board 606.

In addition, after the base 30 is fixed to the middle base 20, the circuit board rack 609 is fixed between the middle base 20 and the base 30, and more specifically, the circuit board rack 609 is abutted against the bottom surface of the base 30, so as to increase the fixing strength of the circuit board rack 609.

The isolation blocks 903 on the fixing frame 90 can be attached to the isolation ribs 2011 to form vertical complementation, vertical matching is formed, double isolation effects are formed between the isolation blocks 903 and the side walls of the circuit board frame 609, the isolation blocks 903 can also be of staggered structures with the isolation ribs 2011, namely, the isolation blocks 903 extend towards the middle seat 20, the isolation ribs 2011 extend towards the base 30, the side walls of the circuit board frame 609 extend towards the middle seat 20, parallel arrangement is achieved among the isolation blocks, intersection exists in the horizontal direction, the line board frame 609 can be arranged at intervals, and the line board frame 609 can be attached to each other, so that triple isolation effects are achieved.

A power supply board 701 and a temperature sensor board 702 are fixed in the third accommodation chamber 70.

The power panel 701 is configured to cooperate with the main circuit to form a power-taking effect, so that the second circuit board 501 located in the second accommodating cavity 60 forms a power-supplying effect. Here, the power board 701 forms an electrical connection effect with the second circuit board 501 through the pins, that is, the pins penetrate through the base 30 to be connected with the second circuit board 501, and besides, signals can be transmitted on the power board 701.

The power board 701 is fixed in the second accommodating cavity 60, where one end of the power board 701 is connected and fixed with the base 30 by a conventional bolt, a first power receiving end 7011 is provided at the other end of the power board 701, a hole is provided at the first power receiving end 7011, an electrical connection layer 7012 is provided at a side of the first power receiving end 7011 facing the bottom plate 40, and the electrical connection layer 7012 is copper foil, silver foil or gold foil. The arrangement of the copper foil, the silver foil or the gold foil is adopted, so that the electric connection effect between the power board 701 and the first conductive sheet 6031 is further improved. The power taking bolt 7013 passes through the power panel 701 and is connected and fixed with the first conductive sheet 6031, at this time, the power taking bolt 7013 is electrically attached to the electrical connection layer 7012, thereby realizing the electrical connection effect between the power panel 701 and the first conductive sheet 6031. The power take-off bolt 7013 is planar toward the electrical connection layer 7012. Through planar setting, increase the area of contact between get electric bolt 7013 and power strip 701, improve the electrical connection effect. In this embodiment, the power-taking bolt 7013 is made of a conductive material, and the lower part thereof can be configured to be similar to a gasket. The first conductive piece 6031 may also be provided with a threaded stud with internal threads, thereby improving the strength of the fixation between the power take-off bolt 7013 and the first conductive piece 6031.

The power panel 701 is further provided with a plurality of second power receiving ends 7014 distributed at equal intervals, wherein the number of the second power receiving ends 7014 is three, two second power receiving ends 7014 are arranged at intervals, an isolation groove 7015 is arranged between every two adjacent second power receiving ends 7014, and the isolation groove 7015 can extend to the edge of the power panel 701 to form a notch-like structure. The third accommodating cavity 70 is provided with a separation plate 703 corresponding to the separation groove 7015, and the separation plate 703 penetrates through the separation groove 7015 to form a separation effect between two adjacent second power receiving ends 7014. The electrical isolation effect between the two second power receiving terminals 7014 is formed through the isolation plate 703, so that the protection effect is improved. Here, the partition 703 is located on the base 30 or the bottom plate 40. The setting of the different positions of the isolation plate 703 can meet the isolation effect. In this embodiment, the spacer 703 is located on the side of the base 30 facing the bottom plate 40.

The base 30 is provided with a hollow column 308, the hollow column 308 is communicated with the second conductive sheet 6032, and a second notch 3081 is arranged on one side of the hollow column 308 facing the power board 701. The bolt passes through the hollow column 308 and is connected and fixed with the second conductive sheet 6032. In this embodiment, because the distance between the power board 701 and the second conductive piece 6032 is too large, a wire connection mode is selected, one end of the wire is connected and fixed with the second power receiving end 7014, the other end of the wire is connected and fixed with the second conductive piece 6032 by using a bolt, a copper nose can be arranged at one end of the wire, which is matched with the second conductive piece 6032, the fixing effect between the wire and the bolt can be better achieved through the copper nose, and the wire can also be directly sleeved on the bolt. The completed wire may be secured to extend toward the power board 701 through the second notch 3081.

The two temperature sensor plates 702 include a first temperature sensor plate 7021 and a second temperature sensor plate 7022. The first temperature sensor plate 7021 and the second temperature sensor plate 7022 are respectively located at an input end and an output end, sensor probes are respectively arranged on the first temperature sensor plate 7021 and the second temperature sensor plate 7022, the sensor probes extend towards one side of the second accommodating cavity 60, and the sensor probes respectively abut against the bottom surfaces of the first conductive sheet 6031 and the second conductive sheet 6032 to form a monitoring effect. Here, the first temperature sensor plate 7021 and the second temperature sensor plate 7022 are each provided with four sensor probes. The effect of temperature detection is formed through the temperature sensor plate 702, so that real-time monitoring is formed, and whether the first conductive sheet 6031 and the second conductive sheet 6032 are in failure or not is monitored. A hollow guide post may also be provided on the base 30 here, so that the sensor probe forms a guiding and fixing effect.

The second temperature sensor board 7022 on the side close to the power board 701 directly forms the effect of signal transmission with the power board 701 through the connector. The first temperature sensor board 7021 at the input end is electrically connected to the power board 701 through a flat cable, so that the base 30 is provided with a third channel 309 on a side facing the bottom board 40, and the flat cable can be embedded into the third channel 309 to form an isolation protection effect, and the flat cable can not interfere with the fixation of the bottom board 40.

By adopting the structure, the power panel 701 and the first conductive sheet 6031 are fixedly connected through the power taking bolt 7013, and meanwhile, the power taking bolt 7013 also has the electrical connection effect between the power panel 701 and the first conductive sheet 6031, so that the welding process is omitted, the processing efficiency is improved, the electrical connection is more stable, and a wire is omitted, so that the use space is increased.

Claims (10)

1. A circuit breaker, characterized in that: including the casing, be equipped with in the casing and hold the chamber, hold chamber and be fixed with arc extinguishing mechanism, operating device and first circuit board, the casing includes well seat, base and towards upper shed's circuit board frame, and first circuit board is located circuit board frame, and circuit board frame is located between well seat and the base and circuit board frame is located one side that operating device kept away from arc extinguishing mechanism, and circuit board frame top surface offsets with well seat.

2. A circuit breaker as claimed in claim 1, wherein: the middle seat is provided with a first concave cavity, and the opening of the circuit board frame is embedded into the first concave cavity.

3. A circuit breaker as claimed in claim 2, wherein: the middle seat is provided with an isolation rib, the isolation rib is positioned on one side of the circuit board frame close to the arc extinguishing mechanism, and the isolation rib is positioned on the horizontal extension direction of the opening of the circuit board frame.

4. A circuit breaker as claimed in claim 3, wherein: the device comprises a holding cavity, a zero sequence transformer and a fixing frame, wherein the zero sequence transformer is fixed in the holding cavity, the fixing frame is partially positioned in the zero sequence transformer, the fixing frame extends out of the zero sequence transformer and is detachably connected with the holding cavity, at least three first channels which are mutually independent are arranged in the fixing frame, a separation block is arranged on the fixing frame, and the separation block is positioned on the horizontal extension direction of an opening of a circuit board frame, which is close to an arc extinguishing mechanism.

5. The circuit breaker of claim 4, wherein: the housing comprises an upper cover, a middle seat, a base and a bottom plate, the accommodating cavity comprises a first accommodating cavity formed by matching the upper cover with the middle seat, a second accommodating cavity formed by matching the middle seat with the base, a third accommodating cavity formed by matching the base with the bottom plate, and the zero sequence transformer and the first circuit board are both positioned in the second accommodating cavity; the base is provided with a first through hole which is communicated with the second accommodating cavity and the third accommodating cavity, and the zero sequence transformer part penetrates through the first through hole and stretches into the third accommodating cavity.

6. The circuit breaker of claim 5, wherein: the system also comprises a control module, a carrier module and a second circuit board; the upper cover is provided with a second concave cavity, the bottom surface of the second concave cavity is provided with a plurality of second through holes, the control module and the carrier module are both positioned in the second concave cavity, the control module part penetrates through the second through holes to form plug connection with the second circuit board, and the carrier module is positioned on the control module and forms plug connection with the control module.

7. The circuit breaker of claim 6, wherein: the micro-switch part extends into the second accommodating cavity and is positioned on the movement track of the operating mechanism in the second accommodating cavity.

8. The circuit breaker of claim 6, wherein: a hollow quadrangular prism is arranged on one side of the middle seat facing the base, and a connecting structure of the second circuit board and the first circuit board is positioned in the hollow quadrangular prism.

9. The circuit breaker of claim 6, wherein: the wire arranging device comprises at least one wire arranging device, wherein a horizontal connection area of a first circuit board and a tripping mechanism is arranged in a shell, the wire arranging device is fixed on the inner wall of the connection area, and a third through hole for a wire to pass through is formed in one end of the inner side of the wire arranging device.

10. The circuit breaker of claim 6, wherein: still including getting electric bolt and being located the power strip of casing, be equipped with first electric end and a plurality of equidistant second electric end that connects of distribution on the power strip, first electric end orientation gets and is equipped with on electric bolt one side with getting electric bolt complex electric connection layer, casing internal fixation has first conducting strip and the second conducting strip of being connected with the main circuit electricity, get electric bolt and pass the power strip and be connected fixedly with first conducting strip, get electric bolt and electric connection layer electric connection, second electric end and second conducting strip electric connection.