CN213212090U

CN213212090U - Plug-in circuit breaker with locking structure

Info

Publication number: CN213212090U
Application number: CN202021332672.XU
Authority: CN
Inventors: 黄立专; 黄明光
Original assignee: Wenzhou New Blue Sky Electrical Co ltd
Current assignee: Wenzhou New Blue Sky Electrical Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-05-14
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a plug-in circuit breaker with locking structure, which comprises a housin, it sets up the press button to slide on the casing, be provided with static contact in the casing, the driving disk, the coil holder, magnetism trip coil, reset spring and contact support, be provided with the movable contact pole on the contact support, the hasp is detained with jumping, jump to detain and be connected with the driving disk transmission, the hasp setting is detained one side in jumping, hasp one end is provided with the joint groove, the joint groove is detained the joint with jumping, the hasp other end is provided with the conflict arch, magnetism trip coil sets up on the coil holder, be provided with the magnet attracting disc between magnetism trip coil and the conflict arch, be provided with the extension spring that resets on the coil holder, be provided with the return torsional spring between hasp and the contact support, the casing lateral wall corresponds the driving disk position and has seted up the lockhole mouth. The circuit breaker has the advantages of simple and reasonable structure, capability of avoiding mistaken switching-on when not installed, capability of realizing the limitation of pulling out the circuit breaker, good transmission effect and capability of effectively improving the use stability of a product.

Description

Plug-in circuit breaker with locking structure

Technical Field

The utility model belongs to the technical field of the circuit breaker technique and specifically relates to a plug-in circuit breaker with locking structure.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. But current plug-in circuit breaker, the transmission structure is comparatively complicated, it is comparatively difficult to install and maintain, reduce production machining efficiency, current plug-in circuit breaker is when needing the dropout, the dead condition of card appears easily simultaneously, influence overall structure's use, be unfavorable for the product popularization, the mistake combined floodgate appears easily in transportation or handling at present plug-in circuit breaker simultaneously, go wrong when leading to follow-up assembly, cause the potential safety hazard, current circuit breaker mainly realizes fixing of position through self joint structure after the installation simultaneously, whether combined floodgate with the circuit breaker does not have direct association, lead to the circuit breaker under the combined floodgate state, the risk of being extracted by the maloperation exists, there is the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a plug-in circuit breaker with locking structure, its simple structure is reasonable, and the mistake is combined floodgate when avoiding not installing, can realize extracting the restriction of mounted position to the circuit breaker after combined floodgate operation simultaneously, has good transmission effect simultaneously, does benefit to the dropout, effectively improves the stability that the product used.

In order to achieve the above object, the utility model provides a plug-in circuit breaker with locking structure, which comprises a shell, a press button is arranged on the shell in a sliding manner, an arc extinguish chamber is arranged in the shell, a static contact piece is arranged on the inner wall of the shell, a transmission disc and a contact support are arranged on the shell between the arc extinguish chamber and the press button in a rotating manner, the transmission disc is connected with the press button through a first bent pin transmission, a limiting mechanism for limiting the rotation of the transmission disc when the circuit breaker is closed is arranged between the transmission disc and the shell, a movable contact rod is arranged on the contact support, a lock catch and a jump catch are further arranged on the contact support in a rotating manner, the jump catch is connected with the transmission disc through a second bent pin transmission to form the drive of the press button for driving the movable contact piece and the static contact piece on the contact rod to rotate, the lock catch is arranged on one side of the jump catch, one, the clamping groove and the jump buckle are clamped to form a limit for the rotation of the jump buckle, the other end of the lock catch is provided with a conflict protrusion, the shell is also internally provided with a coil seat and a magnetic trip coil, the magnetic trip coil is arranged on the coil seat, an iron-attracting disc for enabling the clamping groove and the jump buckle to be separated by the conflict protrusion when the magnetic trip coil attracts is arranged between the magnetic trip coil and the conflict protrusion, the coil seat is provided with a reset tension spring for enabling the iron-attracting disc to reset and separate from the magnetic trip coil, a first return torsion spring for enabling the lock catch to reset after being tripped is also arranged between the lock catch and the contact support, the shell is also provided with a reset spring for supporting a reset contact, one end of the reset spring is connected on the shell and is arranged close to the transmission disc, the other end of the reset spring is connected on the contact support and is arranged close to the lock catch, the side wall of the shell is provided with a lock, and a locking mechanism used for limiting the rotation of the transmission disc when the transmission disc is not inserted and installed is also arranged between the locking port and the transmission disc.

The beneficial effect who so sets up is: the arrangement is that when the closing operation is needed, the pressing button is pressed, the operating button moves downwards along the shell, the transmission disc is driven to rotate forwards through the first bent pin, the transmission disc rotates to drive the trip buckle to rotate through the second bent pin, the trip buckle is in clamping fit with the clamping groove on the lock catch, the moving contact is synchronously driven to support and rotate under the rotation of the transmission disc, the moving contact rod on the contact support moves towards the static contact piece, the moving contact piece is contacted with the static contact piece to realize the closing action, at the moment, the transmission disc does not further rotate under the action of the limiting mechanism, under the state, the contact support receives the resetting force of the resetting spring, the contact support has the trend of reverse rotation, the lock catch also has the same motion trend due to the clamping of the trip buckle and the lock catch, the stress direction of the second bent pin is tangent to the rotation direction of the contact support and points to the transmission disc, and the motion trend of the transmission disc is still forward rotation, but the limiting mechanism can not rotate, so that the whole body is kept in a closed state, and when tripping is carried out, the magnetic trip coil attracts the magnet attraction disc, the magnet attraction disc impacts the abutting bulge of the lock catch in the movement process to enable the lock catch to rotate, so that the clamping groove is separated from the jump buckle, so that the resisting force of the clamping groove to the jump buckle disappears, the second curved needle is not subjected to the acting force of the reset spring any more, the reset force of the reset spring drives the contact to support the rotation, the movable contact piece is separated from the static contact piece, the jump buckle action is realized, the structure is more compact and reasonable, the realization is facilitated, the using effect of the whole structure is improved, the whole structure has better stability, the product value is improved, a mechanism for limiting the rotation of the transmission disc in the transportation process in a state that the transmission disc is not installed is further arranged in the shell, the mistaken switching-on in the transportation process is avoided, the follow-up installation is influenced, and the potential safety hazard is caused.

As a further arrangement of the utility model, the locking ports are respectively a first locking port and a second locking port, the locking mechanism comprises a first limiting arm and a second limiting arm which are arranged in the shell in a swinging mode, one end of the first limiting arm is provided with a limiting hook, the outer peripheral wall of the transmission disc is provided with a clamping block which is clamped with a limiting hook to form a limiting for the rotation of the transmission disc, the other end of the first limiting arm is provided with a first clamping hook which is pressed and sunk into the first locking opening to enable the limiting hook to be separated from the clamping block, the first limiting arm is also provided with a reset torsion spring which is used for enabling the first hook to penetrate out of the first locking opening, one end of the second limiting arm is provided with a second clamping hook which is used for penetrating out of the second locking opening, the other end is a free end, and the transmission disc is provided with an abutting flange which is used for abutting against the second limiting arm when the switch is switched on so that the second clamping hook penetrates out of the second locking opening.

The beneficial effect who so sets up is: the arrangement is that when the circuit breaker is transported or carried, the circuit breaker is not inserted into the installation position, the first hook of the first limiting arm is not subjected to external contact force, under the action of the reset torsion spring, the first hook is exposed out of the first locking port, in the state, the limiting hook is clamped with the clamping block on the transmission disc, so that the rotation disc cannot rotate, the pressing button cannot drive the rotation disc to rotate when pressed, the transmission to a rear system cannot be realized, the closing action cannot be completed, so that the circuit breaker is locked during the transportation or the carrying process, after the circuit breaker is installed, the first hook is subjected to the contact of the installation surface and retracts into the first locking port, the first hook moves to the shell to drive the first limiting arm to swing, so that the limiting hook is separated from the clamping block, the locking to the rotation of the transmission disc is released, and the normal operation of the pressing button can be realized, at this moment after closing a floodgate in the operation of pressing the button, the pressing the button is pressed and is driven the driving disc and rotate, the conflict flange moves thereupon, thereby conflict on the spacing arm of second, drive the swing of the spacing arm of second, make the second pothook that is located the other end expose outside the second locking port, and establish in the dead slot of reserving on the installation face with a hook, thereby after closing a floodgate, the holistic extraction of restriction circuit breaker, thereby realize the position locking after closing a floodgate, this kind of simple structure, good locking effect has, overall structure's result of use is improved.

As a further setting of the utility model, it is protruding that the button is pressed to the spacing arm free end position of the corresponding second of press is provided with the location, the location is protruding to be contradicted with the spacing arm free end of second and is formed spacing to the spacing arm pivoted of second.

The beneficial effect who so sets up is: through a location arch, the swing position of the spacing arm of restriction second avoids the spacing arm of second to swing to according to the press button below, and the influence presses the action of pressing of press button, effectively improves the stability that overall structure used, and simple structure does benefit to the realization simultaneously.

As a further setting of the utility model, one side of the first pothook and the second pothook back to the press button all is the inclined plane setting.

The beneficial effect who so sets up is: set up like this, through the inclined plane structure, when the installation circuit breaker, the inclined plane receives the extrusion of installation face position for first spacing arm and the spacing arm of second immerse the casing, can not cause the influence to the installation location, improve the installation effectiveness, simple structure does benefit to production and processing simultaneously.

As a further setting of the utility model, first pothook one side is provided with first limit stop, second pothook one side is provided with second limit stop.

The beneficial effect who so sets up is: can avoid first spacing arm and the spacing arm of second excessively to deviate from the locking mouth through limit stop, be favorable to keeping overall structure's stability, improve overall structure's result of use.

As the utility model discloses a further setting, stop gear is including setting up spacing arch and the spacing spout between driving plate and casing, spacing arch slides the cooperation with spacing spout, spacing protruding conflict forms spacing to driving plate pivoted at spacing spout lateral wall.

The beneficial effect who so sets up is: set up like this, adopt this kind of limit structure, the turned angle that can effectual restriction driving disc can not excessively rotate, and simple structure does benefit to the realization simultaneously.

As a further setting of the utility model, the contact supports and is provided with spacing post in the hasp both sides, the contact supports to go up to be provided with the floating groove along movable contact rod circumference, the movable contact rod swing sets up in the floating groove, jump and detain the conflict and set up on the movable contact rod, the contact supports to go up and is provided with the reference column in floating groove one side, be provided with on the reference column and be used for contradicting the conflict torsional spring of movable contact rod on the floating groove lateral wall.

The beneficial effect who so sets up is: set up like this, set up spacing post and can rotate the spacing that resets to the hasp, guarantee the stability in use of hasp for the movable contact rod can be contradicted on quiet contact through the conflict torsional spring, guarantees the stability of position, sets up the location of being convenient for to change more like this simultaneously, can reduce the processing production degree of difficulty that the contact supported, improves overall structure's result of use and stability.

As the utility model discloses a further setting, still rotate in the casing and be provided with the trace, the trace extends outward to the casing has the connecting rod, be provided with the connecting hole that is used for being connected with adjacent circuit breaker on the connecting rod, the casing corresponds the connecting rod position and is formed with the linkage spout, trace one end is contradicted and is set up on the contact is supported, and the other end is contradicted and is set up on the magnet disc.

The beneficial effect who so sets up is: set up like this, set up the trace, the trace passes through the connecting hole and is connected with adjacent circuit breaker, realize the linkage of many each circuit breaker, when tripping operation of one of them circuit breaker, the contact supports conflict trace one end, make the trace swing, because a trace swing, make the one end of other traces of being connected with it contradicting on magnet disc driven, thereby conflict on magnet disc, give magnet disc one to the power of magnetism trip coil motion, thereby make magnet disc adsorbed by corresponding magnetism trip coil, thereby make and correspond circuit breaker synchronous tripping, the steam generator is simple in structure, transmission effect is good, effectively realize synchronous tripping, further improve overall structure's result of use and stability in use.

As the utility model discloses a further setting, shells inner wall corresponds and is provided with the display pole according to the swing of button position, display pole one end is provided with the display board, and the other end is provided with the swing feeler lever, the casing corresponds the display board position and is provided with the display window, be provided with on the button lateral wall and be used for forming the conflict flange to the display pole wobbling with display pole lateral wall or swing feeler lever conflict.

The beneficial effect who so sets up is: set up like this, when the switching-on is pressed to the press button, conflict flange conflict swing feeler lever on the press button, thereby drive the sign that the display rod swing will show the switching-on and expose in the display window, thereby show the switching-on state, after the separating brake, press button operation return, at the return in-process, the conflict flange slides along the display rod lateral wall on the press button, thereby drive the swing of display rod, the sign that will show the separating brake exposes and gathers at the display window, thereby surface separating brake state, this kind of simple structure, the transmission is reasonable, effectively improve overall structure's result of use, more directly perceived demonstration display state.

As a further arrangement of the utility model, a second return torsional spring for resetting the transmission disc is also arranged between the transmission disc and the shell.

The beneficial effect who so sets up is: through the return torsional spring, can reset to the driving plate after the separating brake operation, simultaneously because the driving plate resets under the effect of second return torsional spring, contradicts through first looper and presses the button to reset to the realization disconnection, this kind of simple structure does benefit to production and processing, improves overall structure's result of use.

Drawings

Fig. 1 is a schematic structural view of an open state according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a closing state according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a contact support structure according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a linkage rod in an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the pressing button and the display rod according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a transmission plate according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a first limiting arm in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second limiting arm in the embodiment of the present invention.

Detailed Description

The embodiment of the plug-in circuit breaker with a locking structure of the present invention is shown in fig. 1 to 8: the circuit breaker comprises a shell 1, a pressing button 2 is arranged on the shell 1 in a sliding manner, an arc extinguish chamber 12 is arranged in the shell 1, a static contact piece 11 is arranged on the inner wall of the shell 1, a transmission disc 3 and a contact support 4 are arranged between the arc extinguish chamber 12 and the pressing button 2 in the shell 1 in a rotating manner, the transmission disc 3 is in transmission connection with the pressing button 2 through a first bent pin 22, a limiting mechanism used for limiting the rotation of the transmission disc 3 when the circuit breaker is switched on is arranged between the transmission disc 3 and the shell 1, a movable contact rod 43 is arranged on the contact support 4, a lock catch 42 and a jump catch 41 are further arranged on the contact support 4 in a rotating manner, the jump catch 41 is in transmission connection with the transmission disc 3 through a second bent pin to form driving of the pressing button 2 to rotate the contact support 4 so as to enable the movable contact piece on the contact rod 43 to be abutted against the static contact piece 11, the lock catch 42 is arranged on one, the snap-in groove 421 and the jump buckle 41 are connected to form a limit for the rotation of the jump buckle 41, the other end of the lock catch 42 is provided with a conflict protrusion 422, the casing 1 is further provided with a coil base 51 and a magnetic trip coil 52, the magnetic trip coil 52 is arranged on the coil base 51, an iron-attracting disc 53 used for enabling the snap-in groove 421 and the jump buckle 41 to be separated by the conflict protrusion 422 when being attracted by the magnetic trip coil 52 is arranged between the magnetic trip coil 52 and the conflict protrusion 422, the coil base 51 is provided with a reset tension spring 54 enabling the iron-attracting disc 53 to reset and separate from the magnetic trip coil 52, a first return torsion spring 423 used for enabling the lock catch 42 to reset after being tripped is further arranged between the lock catch 42 and the contact support 4, the casing 1 is further provided with a reset spring 46 used for resetting the contact support 4, one end of the reset spring 46 is connected to the casing 1 and is arranged close to the transmission disc 3, the other end is connected on the contact support 4 and is arranged close to the lock catch 42, a lock hole opening is formed in the side wall of the shell 1 corresponding to the position of the transmission disc 3, and a locking mechanism used for limiting the rotation of the transmission disc 3 when the transmission disc 3 is not inserted for installation is further arranged between the lock hole and the transmission disc 3. The beneficial effect who so sets up is: the arrangement is that when a closing operation is required, the pressing button 2 is pressed, the operating button moves downwards along the shell 1, the transmission disc 3 is driven to rotate forwards through the first bent pin 22, the transmission disc 3 rotates and drives the trip catch 41 to rotate through the second bent pin, the trip catch 41 is in clamping fit with the clamping groove 421 on the lock catch 42, the movable contact support 4 is synchronously driven to rotate under the rotation of the transmission disc 3, the movable contact rod 43 on the contact support 4 moves towards the static contact 11, the movable contact is contacted with the static contact 11 to realize the closing action, at the moment, the transmission disc 3 does not further rotate under the action of the limiting mechanism, in the state, the contact support 4 is subjected to the reset force of the reset spring 46, the contact support 4 has the tendency of reverse rotation, and the lock catch 42 also has the same movement tendency because the trip catch 41 is in clamping fit with the lock catch 42, the force direction of the second bent pin is tangent to the rotation direction of the contact support 4 and points to the transmission disc 3, and at this moment, the movement trend of the transmission disc 3 is still positive rotation, but the transmission disc 3 can not rotate under the action of the limiting mechanism, so that the whole is kept in a closed state, when tripping is carried out, the magnetic trip coil 52 attracts the magnet disc 53, the magnet disc 53 strikes the abutting protrusion 422 of the latch 42 in the movement process, so that the latch 42 rotates, the clamping groove 421 is separated from the trip 41, the abutting force of the clamping groove 421 on the trip 41 disappears, the second curved pin does not receive the acting force of the reset spring 46, at this moment, the reset force of the reset spring 46 drives the contact support 4 to rotate, so that the movable contact piece is separated from the static contact piece 11, the trip 41 is realized, the structure is more compact and reasonable, the realization is facilitated, the use effect of the whole structure is improved, the whole has better stability, the product value is improved, a mechanism for limiting the rotation of the transmission disc 3 in the transportation process, namely in an unmounted state is further arranged in the shell 1, the mistaken switching-on in the transportation process is avoided, the follow-up installation is influenced, and potential safety hazards are caused.

As a further provision of this embodiment, the locking openings are a first locking opening and a second locking opening respectively, the locking mechanism comprises a first retaining arm 7 and a second retaining arm 8 which are arranged to swing in the housing 1, one end of the first limiting arm 7 is provided with a limiting hook 72, the outer peripheral wall of the transmission disc 3 is provided with a clamping block 32, the clamping block 32 is clamped with the limiting hook 72 to limit the rotation of the driving disk 3, the other end of the first limiting arm 7 is provided with a first clamping hook 71 which is pressed to be submerged into the first locking opening to enable the limiting hook 72 to be separated from the clamping block 32, the first limiting arm 7 is further provided with a reset torsion spring for enabling the first hook 71 to penetrate out of the first locking opening, one end of the second limiting arm 8 is provided with a second hook 81 for penetrating out of the second locking opening, the other end is a free end, the transmission disc 3 is provided with an interference flange 33 for interfering the second limiting arm 8 during closing to enable the second hook 81 to penetrate through the second locking opening. The beneficial effect who so sets up is: the arrangement is that when the circuit breaker is transported or carried, the circuit breaker is not inserted into the installation position, the first hook 71 of the first limiting arm 7 is not subjected to external contact force, under the action of the reset torsion spring, the first hook 71 is exposed out of the first locking port, in this state, the limiting hook 72 is clamped with the clamping block 32 on the transmission disc 3, so that the rotation disc cannot rotate, the pressing button 2 cannot drive the rotation disc to rotate when pressed, thereby being incapable of driving towards a rear system and finishing the closing action, thereby realizing the locking of the circuit breaker closing in the transportation or carrying process, after the circuit breaker is installed, the first hook 71 is abutted by the installation surface and retracts into the first locking port, and as the first hook 71 moves towards the shell 1, the first limiting arm 7 is driven to swing, so that the limiting hook 72 is separated from the clamping block 32, thereby releasing the locking of the rotation of the transmission disc 3, make press button 2 can normal operating, after 2 operations of press button closed a floodgate this moment, press button 2 to press and drive driving disc 3 and rotate, conflict flange 33 moves along with it, thereby conflict on the spacing arm 8 of second, drive the spacing arm 8 swing of second, make the second pothook 81 that is located the other end expose outside the second locking mouth, and establish in the dead slot of reserving on the installation face with the hook, thereby after closing a floodgate, the holistic extraction of restriction circuit breaker, thereby realize the position locking after closing a floodgate, this kind of simple structure, good locking effect has, overall structure's result of use is improved.

In a further configuration of the present embodiment, the pressing button 2 is provided with a positioning protrusion 21 corresponding to a free end of the second limiting arm 8, and the positioning protrusion 21 abuts against the free end of the second limiting arm 8 to limit the rotation of the second limiting arm 8. The beneficial effect who so sets up is: through a location arch 21, the swing position of the spacing arm 8 of restriction second avoids the spacing arm 8 of second to swing to pressing button 2 below, and the influence presses the action of pressing button 2, effectively improves the stability that overall structure used, and simple structure does benefit to the realization simultaneously.

As a further configuration of the present embodiment, the first hook 71 and the second hook 81 are both provided with an inclined surface on the side facing away from the push button 2. The beneficial effect who so sets up is: set up like this, through the inclined plane structure, when the installation circuit breaker, the inclined plane receives the extrusion of installation face position for first spacing arm 7 and the spacing arm 8 of second immerse casing 1, can not cause the influence to the installation location, improve the installation effectiveness, simple structure does benefit to production and processing simultaneously.

As a further configuration of the present embodiment, a first limit stopper 73 is provided on the first hook 71 side, and a second limit stopper 82 is provided on the second hook 81 side. The beneficial effect who so sets up is: can avoid first spacing arm 7 and second spacing arm 8 excessively to deviate from the locking mouth through limit stop, be favorable to keeping overall structure's stability, improve overall structure's result of use.

As a further arrangement of the present embodiment, the limiting mechanism includes a limiting protrusion and a limiting sliding groove 31 arranged between the transmission disc 3 and the housing 1, the limiting protrusion is in sliding fit with the limiting sliding groove 31, and the limiting protrusion abuts against the side wall of the limiting sliding groove 31 to limit the rotation of the transmission disc 3. The beneficial effect who so sets up is: set up like this, adopt this kind of limit structure, the turned angle that can effectual restriction driving disc 3 can not excessively rotate, and simple structure does benefit to the realization simultaneously.

As a further configuration of the present embodiment, the contact support 4 is provided with limiting posts 45 on two sides of the latch 42, a floating groove 44 is provided on the contact support 4 along the circumference of the moving contact rod 43, the moving contact rod 43 is arranged in the floating groove 44 in a swinging manner, the latch 41 is arranged on the moving contact rod 43 in an abutting manner, a positioning post 45 is provided on one side of the floating groove 44 on the contact support 4, and an abutting torsion spring for abutting the moving contact rod 43 on the side wall of the floating groove 44 is provided on the positioning post 45. The beneficial effect who so sets up is: set up like this, set up spacing post 45 and can rotate the spacing that resets to hasp 42, guarantee hasp 42's stability in use for movable contact rod 43 can be contradicted on quiet contact through the conflict torsional spring, guarantees the stability of position, sets up the location of being convenient for to change more like this simultaneously, can reduce the processing production degree of difficulty that the contact supported 4, improves overall structure's result of use and stability.

As a further setting of this embodiment, still rotate in the casing 1 and be provided with the trace 6, the trace 6 extends to the casing 1 outward and has connecting rod 61, be provided with the connecting hole 62 that is used for being connected with adjacent circuit breaker on the connecting rod 61, casing 1 corresponds connecting rod 61 position and is formed with the linkage spout, trace 6 one end is contradicted and is set up on contact support 4, and the other end is contradicted and is set up on magnet disc 53. The beneficial effect who so sets up is: set up like this, set up trace 6, trace 6 is connected with adjacent circuit breaker through connecting hole 62, realize the linkage of many each circuit breaker, when tripping operation of one of them circuit breaker, contact support 4 contradicts trace 6 one end, make trace 6 swing, because a trace 6 swings, make other trace 6 of being connected with it contradict the one end on magnet disc 53 driven, thereby contradict on magnet disc 53, give magnet disc 53 one to the power of magnetism trip coil 52 motion, thereby make magnet disc 53 adsorbed by corresponding magnetism trip coil 52, thereby make and correspond the synchronous dropout of circuit breaker, this kind of simple structure, transmission effect is good, effectively realize synchronous dropout, further improve overall structure's result of use and stability in use.

As a further configuration of this embodiment, the inner wall of the housing 1 is provided with the display rod 23 corresponding to the position swing of the pressing button 2, one end of the display rod 23 is provided with the display board 231, the other end of the display rod is provided with the swing contact rod 232, the housing 1 is provided with a display window corresponding to the position of the display board 231, and the side wall of the pressing button 2 is provided with the protruding block 22 for abutting against the side wall of the display rod 23 or the swing contact rod 232 to form the swinging abutting against the display rod 23. The beneficial effect who so sets up is: set up like this, press button 2 when pressing the combined floodgate, conflict lug 22 on the press button 2 conflicts swing feeler lever 232, thereby drive the sign that shows that display rod 23 swing will show the combined floodgate and expose in the display window, thereby indicate the combined floodgate state, after the separating brake, press button 2 operation return, at the return in-process, it slides along display rod 23 lateral wall to press conflict lug 22 on the press button 2, thereby drive the swing of display rod 23, the sign that will show the separating brake exposes at the display window and gathers, thereby surface separating brake state, this kind of simple structure, the transmission is reasonable, effectively improve overall structure's result of use, more directly perceived demonstration display state.

As a further configuration of the present embodiment, a second return torsion spring for returning the transmission disc 3 is further provided between the transmission disc 3 and the housing 1. The beneficial effect who so sets up is: through the return torsional spring, can reset transmission disc 3 after the separating brake operation, simultaneously because transmission disc 3 resets under the effect of second return torsional spring, contradicts through first looper 22 and presses button 2 to reset according to the realization disconnection to this kind of simple structure does benefit to production and processing, improves overall structure's result of use.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a plug-in circuit breaker with locking structure, includes the casing, slide on the casing and set up the press button, be provided with the explosion chamber in the casing, the last static contact that is provided with of shells inner wall, its characterized in that: the shell is rotatably provided with a transmission disc and a contact support between the arc extinguish chamber and the press button, the transmission disc is in transmission connection with the press button through a first bent pin, a limiting mechanism used for limiting the rotation of the transmission disc when the circuit breaker is switched on is arranged between the transmission disc and the shell, a movable contact rod is arranged on the contact support, a lock catch and a jump catch are further rotatably arranged on the contact support, the jump catch is in transmission connection with the transmission disc through a second bent pin to form the drive of the press button for the contact support to rotate so as to enable a movable contact piece on the movable contact rod to be abutted against a static contact piece, the lock catch is arranged on one side of the jump catch, one end of the lock catch is provided with a lock groove, the lock groove and the jump catch are clamped to form the limiting of the jump catch to rotate, the other end of the lock catch is provided with an abutting protrusion, the shell is further provided with a coil base and a magnetic trip coil, be provided with between magnetic trip coil and the conflict arch and be used for conflicting protruding messenger's joint groove and jump buckle the magnet disc that breaks away from when receiving magnetic trip coil attraction, be provided with the extension spring that resets that makes the magnet disc break away from magnetic trip coil on the coil base, still be provided with between hasp and the contact support and be used for making the first return torsional spring that resets after the hasp dropout, still be provided with the reset spring who is used for the contact support that resets in the casing, reset spring one end is connected on the casing and is close to the driving plate setting, and the other end is connected on the contact support and is close to the hasp setting, the casing lateral wall has seted up the lock drill way corresponding driving plate position, still be provided with between lock drill way and the driving plate and be used for restricting driving plate pivoted locking mechanical system when not inserting the installation.

2. A plug-in circuit breaker with a locking arrangement as claimed in claim 1, characterized in that: the lockhole mouth is first locking mouth and second locking mouth respectively, locking mechanical system sets up first spacing arm and the spacing arm of second in the casing including the swing, first spacing arm one end is provided with spacing hook, be provided with the fixture block on the driving plate periphery wall, the fixture block forms spacing to the driving plate pivoted with spacing hook joint, the first spacing arm other end is provided with and is used for the pressurized first pothook that immerses first locking mouth messenger spacing hook break away from the fixture block, still be provided with the torsional spring that resets that is used for making first pothook wear out first locking mouth on the first spacing arm, the spacing arm one end of second is provided with the second pothook that is used for wearing out the second locking mouth, and the other end is the free end, be provided with the conflict flange that is used for conflicting spacing arm of second when closing a floodgate and makes the second pothook wear out the second locking mouth on the driving plate.

3. A plug-in circuit breaker with a locking arrangement as claimed in claim 2, characterized in that: the pressing button is provided with a positioning bulge corresponding to the position of the free end of the second limiting arm, and the positioning bulge is abutted against the free end of the second limiting arm to limit the rotation of the second limiting arm.

4. A plug-in circuit breaker with a locking arrangement according to claim 2 or 3, characterized in that: one side of the first clamping hook and one side of the second clamping hook, which faces away from the pressing button, are both arranged in an inclined plane.

5. A plug-in circuit breaker with a locking arrangement according to claim 4, characterized in that: a first limit stop is arranged on one side of the first clamping hook, and a second limit stop is arranged on one side of the second clamping hook.

6. A plug-in circuit breaker with a locking arrangement as claimed in claim 1, characterized in that: limiting mechanism is including setting up spacing arch and the spacing spout between driving disk and casing, spacing arch and the cooperation of sliding of spacing spout, spacing arch is contradicted and is formed spacing to driving disk pivoted at spacing spout lateral wall.

7. A plug-in circuit breaker with a locking arrangement according to claim 6, characterized in that: the contact supports and is provided with spacing posts in fore shaft both sides, the contact supports and goes up to be provided with the floating groove along the movable contact rod circumference, the movable contact rod swing sets up in the floating groove, jump to detain and contradict and set up on the movable contact rod, the contact supports and goes up to be provided with the reference column in floating groove one side, be provided with on the reference column and be used for contradicting the movable contact rod at the conflict torsional spring on the floating groove lateral wall.

8. A plug-in circuit breaker with a locking arrangement according to claim 1, 6 or 7, characterized in that: still rotate in the casing and be provided with the trace, the trace extends outward to the casing has the connecting rod, be provided with the connecting hole that is used for being connected with adjacent circuit breaker on the connecting rod, the casing corresponds the connecting rod position and is formed with the linkage spout, trace one end is contradicted and is set up on the contact is supported, and the other end is contradicted and is set up on the magnet disc.

9. A plug-in circuit breaker with a locking arrangement as claimed in claim 1, characterized in that: the casing inner wall corresponds and is provided with the display pole according to button position swing, display pole one end is provided with the display board, and the other end is provided with the swing feeler lever, the casing corresponds the display board position and is provided with the display window, be provided with on the button lateral wall according to and be used for forming the conflict flange to the display pole wobbling with display pole lateral wall or swing feeler lever conflict.

10. A plug-in circuit breaker with a locking arrangement as claimed in claim 1, characterized in that: and a second return torsion spring for resetting the transmission disc is also arranged between the transmission disc and the shell.