CN212907615U - Circuit breaker - Google Patents

Abstract

The utility model discloses a circuit breaker relates to the electrical equipment field, including accessory module and a plurality of body module, the accessory module includes first casing, drive mechanism, electric leakage tripping device and electric leakage test button mechanism, the body module includes electromagnetic system, two golden systems, operating device, current transformer and electric leakage transformer, electric leakage tripping device includes trip bar and drive assembly, the trip bar is articulated to be installed in the first casing, drive assembly includes: the coil framework is fixedly arranged in the first shell and is wound with a coil; the movable iron core is slidably arranged in the coil framework in a penetrating way; a magnetic yoke; the poke rod is fixedly arranged at the head end of the movable iron core; the trip rod is provided with a swing arm extending out along the radial direction; the poke rod is provided with a hook platform matched with the swing arm clamping position. The utility model has the advantages of simple structure, space saving, labor saving and stable operation.

Description

Circuit breaker

Technical Field

The utility model relates to an electrical equipment field, concretely relates to circuit breaker.

Background

The leakage breaker is a switch which can automatically act when the leakage current in the circuit exceeds a preset value. The conventional leakage circuit breaker is classified into a voltage type and a current type, and the current type is classified into an electromagnetic type and an electronic type.

The residual current circuit breaker is actually a circuit breaker with a residual current protection function, and the residual current circuit breaker comprises a circuit breaker mechanism and a residual current unit, but the existing residual current unit is kept connected with a breaker moving contact in the circuit breaker mechanism through a trip bar, namely after the residual current unit detects that the circuit generates electric leakage, the circuit breaker moving contact is driven to act through the trip bar, and then breaking tripping is realized through the circuit breaker mechanism.

The current leakage circuit breaker has complex leakage tripping mechanism structure and inconvenient use.

In order to detect the leakage protection performance of the leakage circuit breaker, the circuit breaker is provided with a test button, the button structure of the existing leakage circuit breaker is characterized in that the test button, a reset spring and a shell of the leakage module are independently arranged in the existing leakage module, the structure is complex, and the occupied space is large.

Be equipped with the circuit board in the current leakage circuit breaker, can monitor current, voltage, the temperature detection in the circuit breaker, however the mounting structure of current circuit board has the shortcoming that mounting structure is complicated, and occupation space is big.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a simple structure saves space, and is laborsaving, job stabilization's circuit breaker.

The utility model discloses the technical scheme who adopts: a circuit breaker comprises an accessory module and a plurality of body modules, wherein the accessory module comprises a first shell, a transmission mechanism, an electric leakage tripping mechanism and an electric leakage test button mechanism, the body modules comprise an electromagnetic system, a bimetal system, an operating mechanism, a current transformer and an electric leakage transformer,

electric leakage tripping device includes trip bar and drive assembly, the trip bar is articulated to be installed in first casing, drive assembly includes:

the coil framework is fixedly arranged in the first shell and is wound with a coil;

the movable iron core is slidably arranged in the coil framework in a penetrating way;

the magnetic yoke is arranged on the coil framework and is opposite to the tail end of the movable iron core;

the poke rod is fixedly arranged at the head end of the movable iron core and is in transverse sliding fit with the first shell;

the trip rod is provided with a swing arm extending out along the radial direction;

the poke rod is provided with a hook platform matched with the swing arm clamping position.

The first shell is provided with a first sliding groove which is horizontally arranged at a position corresponding to the poke rod, and the poke rod is provided with a first sliding block which is inserted into the first sliding groove.

And a first elastic piece is arranged in the coil framework, and two ends of the first elastic piece respectively abut against the iron core and the magnetic yoke.

The electric leakage test button mechanism comprises a button, a conducting strip and a second elastic piece, wherein the button is slidably arranged on the outer side wall of the first shell, the second elastic piece comprises a fixed end and a movable end, the movable end is arranged at the lower end of the button, the second elastic piece is provided with a first position, separated from the conducting strip, when the button is not pressed down, and a second position, pressed down by the button, of the conducting strip.

The first shell is provided with a mounting position for mounting a button at the upper end of the outer side wall, the mounting position consists of a front baffle and a rear baffle, and the button is flat and is clamped between the front baffle and the rear baffle.

The first shell comprises a base and a cover body, the front baffle comprises a first baffle and a second baffle, the first baffle and the rear baffle are arranged on the base, the second baffle is arranged on the cover body, the first baffle and the second baffle are flushed and arranged at intervals to form a slide for the button to slide up and down, and a sliding block matched with the slide is arranged on the surface of the button in a sliding mode.

The front baffle is characterized in that a first limiting step is arranged at the upper end of the front baffle, the button is provided with a second limiting step facing the first limiting step, the first shell is provided with a third limiting step arranged downwards, and the lower end of the button is provided with a limiting groove facing the third limiting step.

The body module still includes second casing, circuit board and the wire that a plurality of closed assembly connected, the second casing includes the first installation department that supplies electromagnetic system, two gold systems, current transformer and electric leakage transformer installation and the second installation department that supplies the operating device installation, and the upper surface of the first installation department of every second casing all is equipped with first mounting groove, install with circuit board adaptation behind the first mounting groove intercommunication, the side surface of the second installation department of every second casing is equipped with the second mounting groove, supply behind the second mounting groove intercommunication the wire is settled.

The circuit board is provided with a plurality of second mounting holes which are arranged along the length direction and correspond to the first mounting holes, and the circuit board is fixedly mounted in the first mounting holes through bolts;

the position department of first mounting groove bottom still is equipped with the location boss, be equipped with a plurality of on the circuit board along length direction setting and with the constant head tank that the boss corresponds is fixed a position.

The first mounting groove is provided with a first cover plate which is mounted in a sliding manner, and the side wall of the first mounting groove is provided with a second sliding groove which is matched with the first mounting groove in a sliding manner;

a clamping groove is formed in one end of the first cover plate, a clamping boss corresponding to the clamping groove is arranged on the inner wall of the first shell, the clamping boss is in a triangular cone shape, and the clamping groove is in a V shape;

the second mounting groove is provided with a second cover plate which is installed in a sliding mode, and the structure of the second cover plate is the same as that of the first cover plate.

The utility model has the advantages that: this technical scheme drives the trip bar through drive assembly and rotates, and the theory of operation of the drive assembly of this application is through carrying out the circular telegram to coil on the coil skeleton, moves the iron core and produces magnetism, moves the iron core and has an appeal to the yoke, moves the iron core toward the motion of yoke direction, the poker rod among the drive assembly is followed and is moved iron core linear motion, and the swing arm that the in-process that the poker rod removed drove the trip bar moves together, and it is good to have job stabilization nature, simple structure's advantage.

Drawings

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

Fig. 2 is a schematic structural diagram of the leakage tripping mechanism.

Fig. 3 is a schematic diagram of the electrical leakage tripping mechanism.

Fig. 4 is a schematic structural diagram of the leakage test button mechanism.

Fig. 5 is a schematic structural view of the button and the first housing.

Fig. 6 is a schematic diagram of a disassembled structure of the button and the first housing.

Fig. 7 is a schematic structural diagram of the first housing.

Fig. 8 is a schematic structural view of the button.

Fig. 9 is a schematic structural view of the detent boss and the first housing.

Fig. 10 is a schematic diagram of a split structure of the circuit board and the first cover plate.

Fig. 11 is a schematic structural diagram of a wiring board.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in the figure, the circuit breaker comprises an accessory module and a plurality of body modules, wherein the accessory module comprises a first shell 1, a transmission mechanism, an electric leakage tripping mechanism 2 and an electric leakage test button mechanism 3, the body modules comprise an electromagnetic system, a double-metal system, an operating mechanism, a current transformer and an electric leakage transformer,

the electric leakage tripping mechanism 2 comprises a tripping rod 21 and a driving component, the tripping rod 21 is hinged and installed in the first shell 1, and the driving component comprises:

a bobbin 22 fixedly installed in the first housing 1 and having a coil wound thereon;

a movable iron core 23 slidably inserted into the bobbin 22;

a yoke 24 mounted on the bobbin 22 and disposed opposite to a distal end of the movable iron core 23;

a poke rod 25 fixedly installed at the head end of the movable iron core 23 and in transverse sliding fit with the first shell 1;

the trip bar 21 is provided with a swing arm 26 extending out along the radial direction;

the poke rod 25 is provided with a hooking platform 27 which is in clamping fit with the swing arm 26; this technical scheme drives the trip bar through drive assembly and rotates, and the theory of operation of the drive assembly of this application is through carrying out the circular telegram to coil on the coil skeleton, moves the iron core and produces magnetism, moves the iron core and has an appeal to the yoke, moves the iron core toward the motion of yoke direction, the poker rod among the drive assembly is followed and is moved iron core linear motion, and the swing arm that the in-process that the poker rod removed drove the trip bar moves together, and it is good to have job stabilization nature, simple structure's advantage.

The magnetic yoke is in a U-shaped plate shape, one end of the magnetic yoke is plugged at the tail end of the coil framework, and the other end of the magnetic yoke is installed at the front end of the coil framework in a plug-in mode.

The first shell 1 is provided with a first sliding groove 11 horizontally arranged at a position corresponding to the poke rod 25, the poke rod 25 is provided with a first sliding block 28 inserted into the first sliding groove 11, the poke rod moves along the first sliding groove 11, deviation cannot occur in the moving process, and the working stability is ensured.

A first elastic part 29 is arranged in the coil framework 22, and two ends of the first elastic part 29 respectively abut against the movable iron core 23 and the magnetic yoke 24; the first elastic piece adopts a spring, the spring and the coil framework are coaxially arranged, reset pretightening force is provided for the movable iron core losing magnetism, and the movable iron core with magnetism can overcome the pretightening force of the spring and move for a proper distance in the direction of the magnetic yoke.

The poke rod is provided with an avoiding arc surface at the position on one side of the hook platform, the swinging track of the trip rod is an arc line, and the avoiding arc surface can prevent the tripping rod from interfering.

The leakage test button mechanism 3 comprises a button 31, a conducting strip 32 and a second elastic member 33, the button 31 is slidably mounted on the outer side wall of the first casing 1, the second elastic member 33 comprises a fixed end and a movable end which is mounted at the lower end of the button 31 in a butting manner, the second elastic member 33 has a first position where the button 31 is separated from the conducting strip 32 when not pressed and a second position where the button 31 is pressed to contact the conducting strip 32; in the embodiment, the button is limited by the shell, the button can slide up and down and stand still, the lower end of the button props against the torsion spring, the aim of testing whether the leakage characteristic of a product is normal is achieved by pressing the torsion spring to be contacted with the spring piece, and the test button is reset through the resilience of the torsion spring; the torsional spring all has the connecting line board with the spring leaf, and circuit intercommunication after the two contacts, the circuit breaker begins to move, in addition, the button sets up the lateral wall at the casing, has the advantage of saving the space that occupies.

The upper end of the outer side wall of the first shell 1 is provided with an installation position for installing a button 31, the installation position consists of a front baffle and a rear baffle 12, and the button 31 is in a flat plate shape and is clamped and installed between the front baffle and the rear baffle 12; the front baffle and the rear baffle have a limiting effect on the button, so that the button cannot move between the front baffle and the rear baffle.

First casing 1 includes base 13 and lid 14, preceding baffle includes first baffle 15 and second baffle 16, first baffle 15 and backplate 12 set up on base 13, second baffle 16 sets up on lid 14, first baffle 15 and second baffle 16 flush and the interval sets up and forms the confession the slide that the button 31 slided from top to bottom, the button 31 surface is equipped with slides complex slider 311 with the slide, the button up-and-down motion in the slide, and the two adaptation, and the in-process steady progress slides.

The upper end of the front baffle is provided with a first limiting step 17 which is arranged upwards, the button 31 is provided with a second limiting step 312 which faces the first limiting step 17, the first shell 1 is provided with a third limiting step 18 which is arranged downwards, and the lower end of the button 31 is provided with a limiting groove 34 which faces the third limiting step 18; after the first limiting step is contacted with the second limiting step, the button reaches the lowest position, and the phenomenon that the button is damaged due to excessive force is avoided; and after the third limiting step is contacted with the limiting groove, the button is reset upwards and is finished.

The button lower extreme is equipped with the confession the resettlement groove of installation is contradicted to the expansion end of second elastic component, first casing is equipped with the confession the stiff end of second elastic component contradicts the fender material piece of installation, the elastic component adopts the torsional spring, and the expansion end of torsional spring provides the pretightning force that upwards resets for the button.

Still be equipped with the confession in the first casing the installation position of conducting strip bayonet installation, the installation position is located the below of second elastic component, the button pushes down, drives the expansion end of torsional spring and conducting strip contact, makes the circuit intercommunication.

The upper end of the button is provided with a pressing curved surface.

The body module further comprises a plurality of second shells 4, a circuit board 5 and wires which are connected in an overlapped mode, each second shell 4 comprises a first installation part 41 for installing a magnetic system, a bimetal system, a current transformer and a leakage transformer and a second installation part 42 for installing an operating mechanism, a first installation groove 43 is formed in the upper surface of the first installation part 41 of each second shell 4, the first installation grooves 43 are installed in a matched mode with the circuit board 5 after being communicated, a second installation groove 44 is formed in the side surface of the second installation part 42 of each second shell 4, and the wires are installed after the second installation grooves 44 are communicated; the second casing of this embodiment is at the upper surface of first installation department and the side surface fluting of second installation department, with first mounting groove setting at the upper surface of first installation department, forms an holding chamber behind a plurality of first mounting groove intercommunications and supplies the circuit board installation, forms a holding chamber behind a plurality of second mounting groove intercommunications and supplies the wire to settle, and the rational utilization space has the advantage of saving space.

The bottom of the first mounting groove 43 is provided with a first mounting hole 45, the circuit board 5 is provided with a plurality of second mounting holes 51 which are arranged along the length direction and correspond to the first mounting holes 45, and the circuit board 5 is fixedly mounted in the first mounting holes 45 through bolts; after the first mounting holes and the second mounting holes are in one-to-one correspondence, the circuit board is fixed in the first mounting groove by using bolts;

a positioning boss 46 is further arranged at the bottom of the first mounting groove 43, and a plurality of positioning grooves 52 which are arranged along the length direction and correspond to the positioning boss 46 are arranged on the circuit board 5; the circuit board can be fixed a position the installation through the cooperation of location boss and constant head tank before the installation, then through bolt fixed mounting.

The first mounting groove 43 is provided with a first cover plate 47 which is mounted in a sliding manner, and the side wall of the first mounting groove 43 is provided with a second sliding groove 48 which is matched with the first mounting groove in a sliding manner;

a clamping groove 49 is formed in one end of the first cover plate 47, a clamping boss 19 corresponding to the clamping groove 49 is arranged on the inner wall of the first shell, the clamping boss 19 is in a triangular cone shape, the clamping groove is in a V-shaped shape, and when the first cover plate is installed in place, the clamping boss and the clamping groove are in clamping fit to prevent the first cover plate from being pulled out;

the second mounting groove 44 is provided with a second cover plate which is slidably mounted, and the structure of the second cover plate is the same as that of the first cover plate 47.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims (10)

1. A circuit breaker, includes annex module and a plurality of body module, its characterized in that: the accessory module comprises a first shell (1), a transmission mechanism, a leakage tripping mechanism (2) and a leakage test button mechanism (3), the body module comprises an electromagnetic system, a bimetal system, an operating mechanism, a current transformer and a leakage transformer,

leakage tripping device (2) include trip bar (21) and drive assembly, trip bar (21) articulated the installation in first casing (1), drive assembly includes:

a bobbin (22) which is fixedly mounted in the first housing (1) and around which a coil is wound;

a movable iron core (23) slidably inserted in the bobbin (22);

a yoke (24) mounted on the bobbin (22) and disposed opposite to the end of the movable iron core (23);

the poke rod (25) is fixedly arranged at the head end of the movable iron core (23) and is in transverse sliding fit with the first shell (1);

the trip rod (21) is provided with a swing arm (26) extending out along the radial direction;

the poke rod (25) is provided with a hooking platform (27) which is matched with the swing arm (26) in a clamping way.

2. The circuit breaker of claim 1, wherein: the first shell (1) is provided with a first sliding groove (11) which is horizontally arranged at a position corresponding to the poke rod (25), and the poke rod (25) is provided with a first sliding block (28) which is inserted into the first sliding groove (11).

3. The circuit breaker of claim 2, wherein: and a first elastic piece (29) is arranged in the coil framework (22), and two ends of the first elastic piece (29) respectively abut against the movable iron core (23) and the magnetic yoke (24).

4. The circuit breaker of claim 1, wherein: electric leakage test button mechanism (3) are including button (31), conducting strip (32) and second elastic component (33), button (31) slide and install the lateral wall of first casing (1), second elastic component (33) are installed including stiff end and conflict button (31) lower extreme expansion end, second elastic component (33) have button (31) do not push down the time with the first position of conducting strip (32) separation and by button (31) second position of pushing down contact conducting strip (32).

5. The circuit breaker of claim 4, wherein: the first shell (1) is provided with a mounting position for mounting a button (31) at the upper end of the outer side wall, the mounting position comprises a front baffle and a rear baffle (12), and the button (31) is flat and is clamped between the front baffle and the rear baffle (12).

6. The circuit breaker of claim 5, wherein: first casing (1) includes base (13) and lid (14), preceding baffle includes first baffle (15) and second baffle (16), first baffle (15) and backplate (12) set up on base (13), second baffle (16) set up on lid (14), first baffle (15) and second baffle (16) flush and the interval sets up and form the confession slide that button (31) slided from top to bottom, button (31) surface is equipped with slides complex slider (311) with the slide.

7. The circuit breaker of claim 6, wherein: preceding baffle upper end is equipped with first spacing step (17) that sets up, button (31) are equipped with towards second spacing step (312) of first spacing step (17), first casing (1) is equipped with third spacing step (18) that set up down, button (31) lower extreme is equipped with spacing groove (34) towards third spacing step (18).

8. The circuit breaker of claim 4, wherein: the body module still includes second casing (4), circuit board (5) and the wire that a plurality of closed assembly connected, second casing (4) are including first installation department (41) of supplying power magnetic system, two golden systems, current transformer and electric leakage transformer installation and second installation department (42) that supplies operating device installation, and the upper surface of first installation department (41) of every second casing (4) all is equipped with first mounting groove (43), with circuit board (5) adaptation installation after first mounting groove (43) intercommunication, the side surface of second installation department (42) of every second casing (4) is equipped with second mounting groove (44), supply after second mounting groove (44) intercommunication the wire is settled.

9. The circuit breaker of claim 8, wherein: the bottom of each first mounting groove (43) is provided with a first mounting hole (45), the circuit board (5) is provided with a plurality of second mounting holes (51) which are arranged along the length direction and correspond to the first mounting holes (45), and the circuit board (5) is fixedly mounted in the first mounting holes (45) through bolts;

the position department of first mounting groove (43) bottom still is equipped with location boss (46), be equipped with on circuit board (5) a plurality of along length direction set up and with constant head tank (52) that location boss (46) correspond.

10. The circuit breaker of claim 8, wherein: a first cover plate (47) installed in a sliding mode is arranged on the first installation groove (43), and a second sliding groove (48) matched with the first installation groove in a sliding mode is formed in the side wall of the first installation groove (43);

a clamping groove (49) is formed in one end of the first cover plate (47), a clamping boss (19) corresponding to the clamping groove (49) is arranged on the inner wall of the first shell, the clamping boss (19) is in a triangular cone shape, and the clamping groove is in a V shape;

the second mounting groove (44) is provided with a second cover plate which is mounted in a sliding mode, and the structure of the second cover plate is the same as that of the first cover plate (47).

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