CN107993900B - Plug-in miniature circuit breaker - Google Patents
Plug-in miniature circuit breaker Download PDFInfo
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- CN107993900B CN107993900B CN201711022049.7A CN201711022049A CN107993900B CN 107993900 B CN107993900 B CN 107993900B CN 201711022049 A CN201711022049 A CN 201711022049A CN 107993900 B CN107993900 B CN 107993900B
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- circuit breaker
- button
- plug
- shaft
- torsion spring
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- 230000007246 mechanism Effects 0.000 claims abstract description 80
- PPASLZSBLFJQEF-RKJRWTFHSA-M sodium ascorbate Substances [Na+].OC[C@@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RKJRWTFHSA-M 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 239000011692 calcium ascorbate Substances 0.000 claims description 11
- 239000000661 sodium alginate Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 239000004283 Sodium sorbate Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
Abstract
The plug-in miniature circuit breaker comprises a shell (A), a wire outlet end (B), a wire inlet end (C), a button mechanism (D), an operating mechanism (G), an overload protection mechanism (H), an arc extinguishing mechanism (I), a short-circuit protection mechanism (J) and a signal end (K), and is characterized in that the button mechanism (D) is linked with a locking device (E) and a fixed unlocking device (F). The plug-in miniature circuit breaker has the advantages that wiring can be directly plugged in, and the disconnecting operation is simple and convenient; meanwhile, the locking mechanism is improved, so that the circuit breaker can not be switched on at will outside the cabinet, and can be switched on and off at will in the cabinet, the circuit breaker can not be pulled out of the cabinet through parts except the button, and the circuit breaker can be easily taken out of the cabinet through pulling the button, so that the safety of installation and use of the circuit breaker is ensured; the circuit breaker is applicable to specific narrow and small space, and the problem of overhigh local temperature rise of the circuit breaker is solved by rearranging the internal structure of the circuit breaker.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a plug-in miniature circuit breaker.
Background
The circuit breaker is classified into a high voltage circuit breaker and a low voltage circuit breaker according to its range of use. The low-voltage circuit breaker is also called automatic switch, which is an electric appliance with manual switching function and automatic voltage loss, undervoltage, overload and short-circuit protection. It can be used to distribute electric energy, not frequently start asynchronous motor, protect power supply circuit and motor, when they are in serious overload or short circuit and under-voltage, it can automatically cut off circuit, its function is equivalent to the combination of fuse switch and over-under-heating relay, etc. and after breaking fault current it generally does not need to change parts, so that it has been widely used.
The circuit breaker is divided into the following mounting modes: the use of plug-in, fixed and drawer type, plug-in circuit breaker can effectively improve the security of electrical equipment service industry, along with the wide use of plug-in circuit breaker on various electrical equipment, in order to satisfy the installation needs of various different electrical equipment, plug-in circuit breaker's structure also develops to various types, current plug-in miniature circuit breaker generally adopts screw mode access wire, just can carry out the closing operation when the circuit breaker does not pack into the rack, generally adopt the shell fragment to lock the circuit breaker in the rack, the unblock takes out the circuit breaker from the rack needs with the help of additional instrument, the operation is inconvenient, current miniature circuit breaker short circuit instantaneous protection generally adopts direct-acting solenoid electro-magnet instantaneous protection device simultaneously, occupation space is relatively great, be unfavorable for the wire to arrange.
Disclosure of Invention
The invention aims at solving the technical defects that the existing miniature circuit breaker is unreliable in mounting and locking mechanism, easy to cause false closing, large in occupied space of the whole device and unfavorable for wire arrangement, and provides an inserted miniature circuit breaker, wiring can be directly inserted, and the disconnecting operation is simple and convenient; meanwhile, the locking mechanism is improved, so that the circuit breaker can not be switched on at will outside the cabinet, and can be switched on and off at will in the cabinet, the circuit breaker can not be pulled out of the cabinet through parts except the button, and the circuit breaker can be easily taken out of the cabinet through pulling the button, so that the safety of installation and use of the circuit breaker is ensured; the circuit breaker is applicable to specific narrow and small space, and the problem of overhigh local temperature rise of the circuit breaker is solved by rearranging the internal structure of the circuit breaker.
Technical proposal
In order to achieve the technical aim, the plug-in miniature circuit breaker comprises a shell, an outgoing line end, a wire inlet end, a button mechanism, an operating mechanism, an overload protection mechanism, an arc extinguishing mechanism, a short-circuit protection mechanism and a signal end, wherein the button mechanism is connected with the operating mechanism, the button mechanism is arranged in a button mounting groove at the outer side end of the shell, the wire outlet end is arranged in a wire outlet end mounting groove at the outer side end of the shell, the wire outlet end is arranged below the button mechanism, the short-circuit protection mechanism is arranged below the operating mechanism and is positioned on the right side of the wire outlet end, the short-circuit protection mechanism is connected with the wire outlet end, the wire inlet end is arranged in a wire inlet mounting groove at the inner side end of the shell, and the wire inlet end is connected with the overload protection mechanism.
Further, locking device includes the hasp button, the hasp button is adorned through axle one can rotate around the axle on the inner wall of shell, the left side end of hasp button is equipped with spacing boss one, be equipped with the spacing step one that corresponds with spacing boss one on the button in the button mechanism, be equipped with locking boss one on the right side up end of hasp button, be equipped with on the shell with the spacing slotted hole one that locking boss one corresponds, torsional spring one is adorned on the shell, one end of torsional spring is taken on the lower surface that hasp button is located an axle one right side.
Further, fixed unlocking device includes fixed establishment and release mechanism, fixed establishment includes the fastener, the right-hand member of fastener is equipped with the cylinder, the cylinder is adorned in the circular arc groove on the shell inner wall, the torsional spring two is adorned on the shell, the one end of torsional spring two is taken the lower surface of fastener, be equipped with locking boss two on the fastener upside, be equipped with on the shell with locking boss two corresponding spacing slotted hole.
Further, release mechanism includes the release piece, the release piece passes through axle two dress on the shell inner wall and can rotate around axle two, the right side end of release piece is equipped with release boss one, release boss one hasp is in on the release linkage step of fastener left end, the left side end of release piece is equipped with release piece one, release piece one with the drive on the button in the button mechanism protruding one corresponds.
Further, the first shaft and the second shaft are the same shaft, the lock catch button and the unlocking piece are arranged on the shaft side by side, the first torsion spring and the second torsion spring are the same torsion spring, one end of the torsion spring is lapped on the lower surface of the lock catch button, which is positioned on the right side of the first shaft, and the other end of the torsion spring is lapped on the first step surface of the lower part of the locking piece.
Further, the short-circuit protection mechanism comprises an armature, a magnetic yoke, a coil, an iron core, a shaft and an armature torsion spring, wherein the iron core is arranged on the magnetic yoke, the coil is sleeved on the iron core, the armature is arranged on the shaft and can rotate around the shaft, the armature torsion spring is arranged on the shaft, and the armature torsion spring abuts against the armature and can reset the armature.
Further, overload protection mechanism includes the arc angle, the wiring board, adjusting screw and bimetallic strip, bimetallic strip with the wiring board is fixed together, adjusting screw dress is in the arc angle can adjust the position of bimetallic strip.
Further, a groove is formed in the lower surface of the first right side of the shaft, a reverse hook boss corresponding to the groove is arranged on the outer side face of the first lock catch button, and one end of the first torsion spring is lapped in the groove to prop against the reverse hook boss.
Further, a chamfer is arranged on the upper right side face of the second locking boss, and one end of the second torsion spring is lapped on the first step face of the lower portion of the fastener.
Further, the magnetic yoke comprises a pair of magnetic yoke plates arranged face to face, the inner side surfaces of the magnetic yoke plates extend out of the fixing plates, fixing holes are formed in the fixing plates, and the fixing holes are arranged on fixing columns on the shell to fix the magnetic yoke.
Further, the two ends of the iron core are respectively arranged in the mounting holes on the magnetic yoke plate, the two ends of the iron core are steps, and the step surfaces of the steps are propped against the magnetic yoke plate.
Further, the inner side face of the armature extends out of the mounting plate, a shaft mounting hole is formed in the mounting plate, two ends of the shaft are respectively arranged in the shaft mounting hole, the armature torsion spring is arranged on the shaft and located between the mounting plates, one end of the armature torsion spring is arranged on the shell, and the other end of the armature torsion spring is arranged on the lower surface of the armature.
Further, the armature is a flat plate, the upper surface of the magnetic yoke plate is a flat surface corresponding to the flat plate, and a tripping boss is arranged at the front end of the armature.
Further, be equipped with the drive board on the wiring board, the one end and the drive board fixed dress of bimetallic strip are in the same place, the drive board is located the mounting panel below on the striking angle, be equipped with the screw hole on the mounting panel, screw hole is equipped with adjusting screw, adjusting screw and drive board correspond the position that can adjust bimetallic strip.
Further, the arc striking angle and the patch board are assembled together through contact pressing or welding to be electrically connected.
Further, the striking angle includes the striking board body, the striking board body is bent and is connected the mounting panel, is equipped with the slotted hole that link up on striking board body and the mounting panel, be equipped with the screw hole on the mounting panel head end face, striking board body outside end is connected with the connecting plate, draw forth the striking support in the slotted hole of mounting panel outside end, striking support connection has the striking board, the striking board is parallel with the mounting panel, the striking board body with the striking support is parallel.
Further, the wiring board includes the wiring support, be equipped with waist shape hole on the wiring support, the drive board is connected with wiring support circular arc, the drive board is located wiring support below with the wiring support is parallel, the drive board is followed the slotted hole inserts mounting panel head end face below and with the mounting panel is parallel, wiring support right side is connected with the wiring row.
Further, the wire inlet end comprises at least 2 wire inserting rows, the wire inserting rows are comb-shaped and are composed of 2 rows of comb teeth with opposite shapes and similar shapes.
Further, the plug wire row is made of a material with conductivity and elasticity.
Further, the wire outlet end comprises a wiring board and an elastic sheet, and the elastic sheet compresses the external lead with the wiring board. Advantageous effects
The plug-in miniature circuit breaker provided by the invention has the advantages that the wiring can be directly plugged in, and the disconnecting operation is simple and convenient; meanwhile, the locking mechanism is improved, so that the circuit breaker can not be switched on at will outside the cabinet, and can be switched on and off at will in the cabinet, the circuit breaker can not be pulled out of the cabinet through parts except the button, and the circuit breaker can be easily taken out of the cabinet through pulling the button, so that the safety of installation and use of the circuit breaker is ensured; the circuit breaker is applicable to specific narrow and small space, and the problem of overhigh local temperature rise of the circuit breaker is solved by rearranging the internal structure of the circuit breaker.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
Fig. 2 is a schematic view of a locking device according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a latch button according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a fastener according to an embodiment of the present invention.
Fig. 5 is a schematic view of a position structure of a first step surface in an embodiment of the present invention.
Fig. 6 is a schematic structural view of a fastening component according to an embodiment of the present invention.
Fig. 7 is a schematic view of a position structure between a locking device and a fixed unlocking device in an embodiment of the present invention.
Fig. 8 is a schematic view of the installation structure of the locking device and the fixing and unlocking device in the embodiment of the invention.
FIG. 9 is a schematic view of the structure of the button mechanism in the embodiment of the present invention;
FIG. 10 is a schematic view of a button structure in accordance with an embodiment of the present invention;
FIG. 11 is a schematic structural view of a short-circuit protection mechanism according to an embodiment of the present invention;
FIG. 12 is an exploded view of a short circuit protection mechanism in an embodiment of the present invention;
FIG. 13 is a schematic structural view of an overload protection mechanism according to an embodiment of the present invention;
fig. 14 is a schematic view of the structure of the arc striking angle in the embodiment of the invention.
Fig. 15 is a schematic structural diagram of a patch board according to an embodiment of the present invention.
Fig. 16 is a schematic structural view of an outlet terminal in an embodiment of the present invention.
Fig. 17 is a schematic diagram of a circuit breaker drawing cabinet breaking structure according to an embodiment of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples.
Examples
As shown in the attached figure 1, the plug-in miniature circuit breaker comprises a shell A, an outgoing line end B, an incoming line end C, a button mechanism D, a locking device E, a fixed unlocking device F, an operating mechanism G, an overload protection mechanism H, an arc extinguishing mechanism I, a short-circuit protection mechanism J and a signal end K, wherein the button mechanism D is connected with the operating mechanism G, the button mechanism D is arranged in a button mounting groove A01 at the outer side end of the shell A, the outgoing line end B is arranged in an outgoing line end mounting groove A02 at the outer side end of the shell A, the outgoing line end B is positioned below the button mechanism D, the short-circuit protection mechanism J is arranged below the operating mechanism G and is positioned on the right side of the outgoing line end B, the short-circuit protection mechanism J is connected with the outgoing line end B, the incoming line end C is positioned in an incoming line mounting groove A03 at the inner side end of the shell A, the incoming line end C is connected with the overload protection mechanism H, the plug-in miniature circuit breaker further comprises a locking device E and a fixed unlocking device F, and a linkage device F is connected with the locking device F.
As shown in fig. 2 and 3, the locking device E includes a locking button E301, the locking button E301 is mounted on an inner wall of the housing a through a shaft E302 and can rotate around the shaft E302, a limit boss E301a is disposed at a left end of the locking button E301, a limit step DE201 corresponding to the limit boss E301a is disposed on a button D2 in the button mechanism D, a locking boss E301b is disposed on an upper end face of a right side of the locking button E301, a limit slot AE102 corresponding to the locking boss E301b is disposed on the housing a, a torsion spring E4 is mounted on the housing a, and one end E401 of the torsion spring E4 is mounted on a lower surface of the locking button E301 located on a right side of the shaft E302. The lower surface of the lock button E301, which is positioned on the right side of the first shaft E302, is provided with a groove E301c, the outer side surface of the lock button E301 is provided with a reverse hook boss E301d corresponding to the groove E301c, and one end E401 of the first torsion spring E4 is lapped in the groove E301c to prop against the reverse hook boss E301d. When the circuit breaker is in an off state, the locking button E301 is acted by the torsion spring E4, so that the limit boss E301a on the left side of the locking button E301 abuts against the limit step DE201 of the button D2, the locking button E301 locks the button D2, the operating button D2 cannot be pressed, and the circuit breaker cannot be closed. In this embodiment, when the circuit breaker is in a freely opened/closed state, and the circuit breaker is installed in place in the cabinet L, the first E301b of the right locking boss of the lock button E301 is pressed by the cabinet plate, the lock button E301 rotates clockwise, the first E301a of the left limiting boss of the lock button E301 no longer abuts against the first E201 of the limiting step in the middle of the button E2, the operating button D2 is unlocked, and the button D2 is pushed (pulled) to drive the connecting rod in the circuit breaker mechanism to act so as to open/close the circuit breaker.
The fixing unlocking device F comprises a fixing mechanism F3 and an unlocking mechanism F4, as shown in figures 4 and 5, the fixing mechanism F3 comprises a fastener F301, a cylinder F301a is arranged at the right end of the fastener F301, the cylinder F301a is arranged in an arc-shaped groove AF102 on the inner wall of the shell A, a torsion spring II F5 is arranged on the shell A, one end F501 of the torsion spring II F5 is lapped on the lower surface of the fastener F301, a locking boss II F301b is arranged on the upper side surface of the fastener F301, and a limiting slot II AF103 corresponding to the locking boss II F301b is arranged on the shell A; the right side surface of the second locking boss F301b is provided with a chamfer, and one end F501 of the second torsion spring F5 is lapped on the first step surface F301d at the lower part of the fastener F301. The unlocking mechanism F4 comprises a unlocking piece F401, as shown in fig. 6, the unlocking piece F401 is arranged on the inner wall of the shell A through a shaft II F402 and can rotate around the shaft II F402, a unlocking boss F401a is arranged at the right side end of the unlocking piece F401, the unlocking boss F401a is buckled on a unlocking linkage step F301c at the left end of the locking piece F301, a unlocking block F403 is arranged at the left side end of the unlocking piece F401, and the unlocking block F403 corresponds to a driving protrusion DF201 on a button D2 in the button mechanism D. In this embodiment, when the circuit breaker is installed in the cabinet L, the second locking boss F301b of the fastener F301 is pressed by the cabinet L, the fastener F301 rotates counterclockwise around the right cylinder F301a against the second torsion spring F5, and the circuit breaker can be installed in the cabinet smoothly. When the circuit breaker is stably arranged in the cabinet L, the cabinet does not press the second locking boss F301b of the fastener F301 any more, the fastener F301 rotates clockwise to reset under the action of the second torsion spring F5, the second locking boss F301b extends out of the shell A from the second limiting slot AF103, and the second locking boss F301b locks the circuit breaker in the cabinet and is not pulled out; the circuit breaker can be switched on by pressing the button D2, the button D2 is pulled out, the circuit breaker can be switched off, and the circuit breaker cannot be taken out of the cabinet from other parts except the button D2 of the circuit breaker. When the button D2 is pulled to a certain position, the button D2 is pulled continuously, the first DF201 on the upper right side of the button D2 acts on the first trip block F403 on the left side end of the trip member F401, the trip member F401 rotates clockwise around the second shaft F402, the trip linkage step F301c of the catch F301 acts on the first trip boss F401a on the right side end of the trip member F401, the catch F301 rotates anticlockwise around the right side cylinder F301a against the reaction force of the second torsion spring 5, the second locking boss F301b moves downwards to a certain position and is lower than the surface of the circuit breaker shell a, the circuit breaker is unlocked from the cabinet, and the circuit breaker can be pulled out from the cabinet easily.
In this embodiment, as shown in fig. 7 and 8, the first shaft E302 and the second shaft F402 are the same shaft, the lock button E301 and the unlocking member F401 are mounted on the shaft side by side, the first torsion spring E4 and the second torsion spring F5 are the same torsion spring, one end E401 of the torsion spring is mounted on the lower surface of the lock button E301 on the right side of the first shaft E302, and the other end F501 is mounted on the step surface F301d of the lower portion of the locking member F301.
As shown in fig. 9 and 10, the button mechanism D includes a button D2 and an indicator D1, a cavity D202 is provided in the button D2, the indicator D1 is installed in the cavity D202, the indicator D1 can swing in the cavity D202, a viewing window D203 is provided on the button D2, and different areas can be displayed in the viewing window D203 during the swinging of the indicator D1.
As shown in fig. 11 and 12, the short-circuit protection mechanism J includes an armature J1, a yoke J2, a coil J3, an iron core J4, an axle J5 and an armature torsion spring J6, wherein the iron core J4 is mounted on the yoke J2, the coil J3 is sleeved on the iron core J4, the armature J1 is mounted on the axle J5 and can rotate around the axle J5, the armature torsion spring J6 is mounted on the axle J5, and the armature torsion spring J6 abuts against the armature J1 and can reset the armature.
In this embodiment, the yoke J2 includes a pair of yoke plates J201, J201 'disposed in a face-to-face manner, the inner sides of the yoke plates J201, J201' extend out of the fixing plates J201a, J201a ', the fixing plates J201a, J201a' are provided with fixing holes J201a01, J201a01', and the fixing holes J201a01, J201a01' are mounted on the fixing posts a701 on the housing a to fix the yoke J2; two ends of the iron core J4 are respectively arranged in mounting holes J201b and J201b ' on the magnetic yoke plates J201 and J201', two ends of the iron core J4 are provided with steps J401, and step surfaces of the steps J401 are propped against the magnetic yoke plates J201 and J201'; the inner side surface of the armature J1 extends out of mounting plates J101 and J101', shaft mounting holes J101a and J101a ' are formed in the mounting plates J101 and J101', two ends of a shaft J5 are respectively arranged in the shaft mounting holes J101a and J101a ', an armature torsion spring J6 is arranged on the shaft J5 and is positioned between the mounting plates J101 and J101', one end of the armature torsion spring J6 is lapped on a shell A, and the other end of the armature torsion spring J6 is lapped on the lower surface of the armature J1; the armature J1 is a flat plate, the upper surfaces of the magnetic yoke plates J201 and J201' are flat surfaces corresponding to the flat plate, and a tripping boss J102 is arranged at the front end of the armature J1; the shaft J5 is fixedly mounted on the housing A. When smaller current passes through the coil J3 of the electromagnetic release, the attraction between the armature J1 and the magnetic yoke J2 of the electromagnetic release is smaller than the counter force of the armature torsion spring J6, the armature J1 keeps a static state under the action of the armature torsion spring J6, the armature J1 does not flap a lock catch, and the circuit breaker does not trip; when the circuit breaker is closed, when the current passing through the coil J3 is larger than a certain value, the attraction force between the armature J1 and the magnetic yoke J2 of the electromagnetic release is larger than the counter force of the armature torsion spring J6, the armature J1 is rotated around the shaft J5 towards the magnetic yoke J2 under the action of the attraction force against the counter force of the armature torsion spring J6, and the lock catch is flapped, so that the circuit breaker is tripped. After the breaker is opened, the armature J1 is restored to the non-clapped state under the action of the armature torsion spring J6.
As shown in fig. 13, 14 and 15, the overload protection mechanism H includes an arc striking angle H1, a patch board H2, an adjusting screw H3 and a bimetal H4, where the bimetal H4 is fixed with the patch board H2, and the arc striking angle H1 and the patch board H2 are electrically connected by contact pressing or welding, and in this embodiment, are electrically connected by welding. The adjusting screw H3 is arranged on the arc striking angle H1 and can adjust the position of the bimetallic strip H4.
A driving plate H201 is arranged on the patch board H2, one end of the bimetallic strip H4 is fixedly arranged with the driving plate H201, the driving plate H201 is positioned below a support plate H101 on the arc striking angle H1, a threaded hole H101a is arranged on the support plate H101, an adjusting screw H3 is arranged in the threaded hole H101a, and the adjusting screw H3 corresponds to the driving plate H201 and can adjust the position of the bimetallic strip H4;
the arc striking angle H1 comprises an arc striking plate body H102, the arc striking plate body H102 is bent and connected with a support plate H101, through slotted holes H101b are formed in the arc striking plate body H102 and the support plate H101, threaded holes H101a are formed in the head end plate surface of the support plate H101, the outer side end of the arc striking plate body H102 is connected with a connecting plate H103, an arc striking support H104 is led out from the slotted holes H101b at the outer side end of the support plate H101, the arc striking support H104 is connected with an arc striking plate H105, the arc striking plate H105 is parallel to the support plate H101, and the arc striking plate body H102 is parallel to the arc striking support H104;
the wiring board H2 comprises a wiring support H202, a waist-shaped hole H202a is formed in the wiring support H202, a driving board H201 is connected with the wiring support H202 in an arc mode, the driving board H201 is located below the wiring support H202 and parallel to the wiring support H202, the driving board H201 is inserted from the slotted hole H101b to below the head end plate face of the wiring board H101 and parallel to the wiring board H101, and a wiring board H203 is connected to the right side of the wiring support H202. When the circuit breaker is in overload operation, the bimetallic strip H4 is subjected to bending deformation under the influence of overload heat, and the tripping mechanism of the circuit breaker is driven to perform tripping action within a specified time; the moving contact and the fixed contact of the tripping of the circuit breaker are separated to generate an electric arc, the electric arc reaches an arc striking angle H1 through the moving contact, and the electric arc enters an arc extinguishing chamber along an arc striking plate H105 of the arc striking angle H1 to play a role in arc striking and extinguishing.
As shown in fig. 16, the wire outlet end B is disposed at the lower left side of the circuit breaker and is composed of two connection ports, and the external wire is directly inserted into the ports and is pressed against the connection board B1 by the spring plate B2.
As shown in fig. 17, the wire inlet end C includes 2 wire inserting rows H203, the wire inserting rows H203 are comb-shaped, and are composed of 2 rows of comb teeth with similar shapes, the wire inserting rows H203 are made of a material with conductivity and elasticity, and in this embodiment, the wire inserting rows H203 are made of copper-nickel alloy.
The plug-in miniature circuit breaker provided by the embodiment can directly plug in a wiring, and is simple and convenient to disconnect; meanwhile, the locking mechanism is improved, so that the circuit breaker can not be switched on at will outside the cabinet, and can be switched on and off at will in the cabinet, the circuit breaker can not be pulled out of the cabinet through parts except the button, and the circuit breaker can be easily taken out of the cabinet through pulling the button, so that the safety of installation and use of the circuit breaker is ensured; the circuit breaker is applicable to specific narrow and small space, and the problem of overhigh local temperature rise of the circuit breaker is solved by rearranging the internal structure of the circuit breaker.
The structures, proportions, sizes, etc. shown in the drawings of the present embodiment are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, so that any structural modifications, proportional changes, or size adjustment should not be construed as essential to the invention, but should still fall within the scope of the invention as defined by the appended claims. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "anticlockwise" and the like are used in the present specification for convenience of description, and are not intended to limit the scope of the present invention, and the relative relation changes or modifications thereof are considered to be within the scope of the present invention without substantial modification of the technical content.
Claims (19)
1. The utility model provides a small-size circuit breaker of plug-in, it includes shell (A), play line end (B), inlet wire end (C), button mechanism (D), operating device (G), overload protection mechanism (H), arc extinguishing mechanism (I), short-circuit protection mechanism (J) and signal end (K), button mechanism (D) are connected with operating device (G), button mechanism (D) dress is in button mounting groove (A01) of shell (A) outside end, outlet wire end (B) dress is in outlet wire end mounting groove (A02) of shell (A) outside end, outlet wire end (B) are located button mechanism (D) below, short-circuit protection mechanism (J) dress in operating device (G) below is located the right side of outlet wire end (B), short-circuit protection mechanism (J) are connected with outlet wire end (B), inlet wire end (C) are located overload protection mechanism (H) and overload protection mechanism (I) right side end are installed in shell (A) inboard end's mounting groove (A03), outlet wire end (B) are located in overload protection mechanism (J), overload protection mechanism (J) is connected with its looks characterized in that it is connected to the inlet wire end: the plug-in miniature circuit breaker further comprises a locking device (E) and a fixed unlocking device (F), the button mechanism (D) is linked with the locking device (E) and the fixed unlocking device (F);
the locking device (E) comprises a locking button (E301), the locking button (E301) is arranged on the inner wall of the shell (A) through a first shaft (E302) and can rotate around the first shaft (E302), a first limiting boss (E301 a) is arranged at the left side end of the locking button (E301), a first limiting step (DE 201) corresponding to the first limiting boss (E301 a) is arranged on a button (D2) in the button mechanism (D), a first locking boss (E301 b) is arranged on the upper end face of the right side of the locking button (E301), a first limiting slot hole (AE 102) corresponding to the first locking boss (E301 b) is arranged on the shell (A), a first torsion spring (E4) is arranged on the shell (A), and one end (E401) of the first torsion spring (E4) is lapped on the lower surface of the right side of the locking button (E301).
2. A plug-in miniature circuit breaker as claimed in claim 1, wherein: the fixed unlocking device (F) comprises a fixing mechanism (F3) and an unlocking mechanism (F4), the fixing mechanism (F3) comprises a fastener (F301), the right end of the fastener (F301) is provided with a cylinder (F301 a), the cylinder (F301 a) is arranged in an arc-shaped groove (AF 102) on the inner wall of the shell (A), a torsion spring II (F5) is arranged on the shell (A), one end (F501) of the torsion spring II (F5) is lapped on the lower surface of the fastener (F301), a locking boss II (F301 b) is arranged on the upper side surface of the fastener (F301), and a limiting slot II (AF 103) corresponding to the locking boss II (F301 b) is arranged on the shell (A).
3. A plug-in miniature circuit breaker as claimed in claim 2, wherein: the unlocking mechanism (F4) comprises an unlocking piece (F401), the unlocking piece (F401) is arranged on the inner wall of the shell (A) through a second shaft (F402) and can rotate around the second shaft (F402), a first unlocking boss (F401 a) is arranged at the right side end of the unlocking piece (F401), the first unlocking boss (F401 a) is buckled on a first unlocking linkage step (F301 c) at the left end of the fastener (F301), a first unlocking block (F403) is arranged at the left side end of the unlocking piece (F401), and the first unlocking block (F403) corresponds to a first driving protrusion (DF 201) on a button (D2) in the button mechanism (D).
4. A plug-in miniature circuit breaker according to claim 1 or 3, characterized in that: the first shaft (E302) and the second shaft (F402) are the same shaft, the lock catch button (E301) and the unlocking piece (F401) are arranged on the shaft side by side, the first torsion spring (E4) and the second torsion spring (F5) are the same torsion spring, one end (E401) of the torsion spring is lapped on the lower surface of the lock catch button (E301) positioned on the right side of the first shaft (E302), and the other end (F501) of the torsion spring is lapped on the first step surface (F301 d) of the lower part of the locking piece (F301).
5. A plug-in miniature circuit breaker as claimed in claim 1, wherein: the short-circuit protection mechanism (J) comprises an armature (J1), a magnet yoke (J2), a coil (J3), an iron core (J4), a shaft (J5) and an armature torsion spring (J6), wherein the iron core (J4) is arranged on the magnet yoke (J2), the coil (J3) is sleeved on the iron core (J4), the armature (J1) is arranged on the shaft (J5) and can rotate around the shaft (J5), the armature torsion spring (J6) is arranged on the shaft (J5), the armature torsion spring (J6) abuts against the armature (J1) and enables the armature to reset, and the shaft (J5) is fixedly arranged on the shell (A).
6. A plug-in miniature circuit breaker as claimed in claim 1, wherein: overload protection mechanism (H) is including striking angle (H1), wiring board (H2), adjusting screw (H3) and bimetallic strip (H4), bimetallic strip (H4) with wiring board (H2) are fixed together, adjusting screw (H3) dress can be adjusted on striking angle (H1) bimetallic strip (H4)'s position.
7. A plug-in miniature circuit breaker as claimed in claim 1, wherein: the locking button (E301) is provided with a groove (E301 c) on the lower surface of the right side of the first shaft (E302), the outer side surface of the locking button (E301) is provided with a reverse hook boss (E301 d) corresponding to the groove (E301 c), and one end (E401) of the first torsion spring (E4) is lapped in the groove (E301 c) to prop against the reverse hook boss (E301 d).
8. A plug-in miniature circuit breaker as claimed in claim 2, wherein: the right side face of the second locking boss (F301 b) is provided with a chamfer, and one end (F501) of the second torsion spring (F5) is lapped on the first step face (F301 d) of the lower part of the fastener (F301).
9. A plug-in miniature circuit breaker as claimed in claim 5, wherein: the magnetic yoke (J2) comprises a pair of magnetic yoke plates (J201, J201 ') which are arranged face to face, fixing plates (J201 a, J201 a') extend out of the inner side surfaces of the magnetic yoke plates (J201, J201 '), fixing holes (J201 a01, J201a 01') are formed in the fixing plates (J201 a, J201a01 '), and the fixing holes (J201 a01, J201a 01') are arranged on fixing columns (A701) on the shell (A) to fix the magnetic yoke (J2).
10. A plug-in miniature circuit breaker as claimed in claim 9, wherein: the two ends of the iron core (J4) are respectively arranged in mounting holes (J201 b, J201b ') on the magnetic yoke plates (J201, J201 '), the two ends of the iron core (J4) are provided with steps (J401), and step surfaces of the steps (J401) are propped against the magnetic yoke plates (J201, J201 ').
11. A plug-in miniature circuit breaker as claimed in claim 9, wherein: the inner side surface of the armature (J1) extends out of the mounting plates (J101, J101 '), shaft mounting holes (J101 a, J101a ') are formed in the mounting plates (J101, J101 ') respectively, two ends of the shaft (J5) are arranged in the shaft mounting holes (J101 a, J101a '), the armature torsion spring (J6) is arranged on the shaft (J5) and located between the mounting plates (J101, J101 '), one end of the armature torsion spring (J6) is arranged on the shell (A), and the other end of the armature torsion spring is arranged on the lower surface of the armature (J1).
12. A plug-in miniature circuit breaker as claimed in claim 9, wherein: the armature (J1) is a flat plate, the upper surfaces of the magnetic yoke plates (J201, J201') are flat surfaces corresponding to the flat plate, and a tripping boss (J102) is arranged at the front end of the armature (J1).
13. A plug-in miniature circuit breaker as claimed in claim 6, wherein: be equipped with on wiring board (H2) and drive board (H201), the one end and the drive board (H201) of bimetallic strip (H4) are fixed to be in the same place, drive board (H201) are located mounting panel (H101) below on the striking angle (H1), be equipped with screw hole (H101 a) on mounting panel (H101), screw hole (H101 a) are equipped with adjusting screw (H3), adjusting screw (H3) correspond with drive board (H201) and can adjust bimetallic strip (H4) position.
14. A plug-in miniature circuit breaker as claimed in claim 13, wherein: the arc striking angle (H1) and the patch board (H2) are electrically connected through contact, pressing or welding.
15. A plug-in miniature circuit breaker as claimed in claim 14, wherein: the arc striking angle (H1) comprises an arc striking plate body (H102), the arc striking plate body (H102) is bent and connected with a support plate (H101), a through slot hole (H101 b) is formed in the arc striking plate body (H102) and the support plate (H101), a threaded hole (H101 a) is formed in the head end plate surface of the support plate (H101), the outer side end of the arc striking plate body (H102) is connected with a connecting plate (H103), an arc striking support (H104) is led out from the slot hole (H101 b) of the outer side end of the support plate (H101), the arc striking support (H104) is connected with an arc striking plate (H105), the arc striking plate (H105) is parallel to the support plate (H101), and the arc striking plate body (H102) is parallel to the arc striking support (H104).
16. A plug-in miniature circuit breaker as claimed in claim 15, wherein: the wiring board (H2) comprises a wiring support (H202), a waist-shaped hole (H202 a) is formed in the wiring support (H202), the driving board (H201) is connected with the wiring support (H202) in an arc mode, the driving board (H201) is located below the wiring support (H202) and parallel to the wiring support (H202), the driving board (H201) is inserted into the lower portion of the head end plate surface of the wiring board (H101) from the slot hole (H101 b) and parallel to the wiring board (H101), and a wiring row (H203) is connected to the right side of the wiring support (H202).
17. A plug-in miniature circuit breaker as claimed in claim 1, wherein: the wire inlet end (C) comprises at least 2 wire inserting rows, and the wire inserting rows (H203) are comb-shaped and are composed of 2 rows of comb teeth with opposite shapes.
18. A plug-in miniature circuit breaker as claimed in claim 17, wherein: the plug wire row (H203) is made of a material with electric conductivity and elasticity.
19. A plug-in miniature circuit breaker as claimed in claim 1, wherein: the wire outlet end (B) comprises a wiring board (B1) and an elastic piece (B2), and the elastic piece (B2) compresses the external lead with the wiring board (B1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711022049.7A CN107993900B (en) | 2017-10-26 | 2017-10-26 | Plug-in miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711022049.7A CN107993900B (en) | 2017-10-26 | 2017-10-26 | Plug-in miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN107993900A CN107993900A (en) | 2018-05-04 |
| CN107993900B true CN107993900B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711022049.7A Active CN107993900B (en) | 2017-10-26 | 2017-10-26 | Plug-in miniature circuit breaker |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209448232U (en) | 2018-12-21 | 2019-09-27 | 华为数字技术（苏州）有限公司 | A kind of controller switching equipment and distribution system |
| CN109686625A (en) * | 2018-12-28 | 2019-04-26 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109585233A (en) * | 2018-12-28 | 2019-04-05 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109786186B (en) * | 2018-12-28 | 2024-03-26 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| EP3905296A4 (en) * | 2018-12-28 | 2022-08-24 | Zhejiang Chint Electrics Co., Ltd. | Miniature circuit breaker |
| CN109599303B (en) * | 2018-12-28 | 2023-10-24 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| CN109686626A (en) * | 2018-12-28 | 2019-04-26 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109637907A (en) * | 2018-12-28 | 2019-04-16 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN111183559A (en) * | 2019-08-27 | 2020-05-19 | 华为技术有限公司 | Power distribution equipment and power distribution system |
| CN114496672A (en) * | 2022-02-25 | 2022-05-13 | 江西航同电气科技有限公司 | Locking and unlocking structure of plug-in circuit breaker |
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