CN103871797A - Circuit breaker and electromagnetic tripping device - Google Patents
Circuit breaker and electromagnetic tripping device Download PDFInfo
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- CN103871797A CN103871797A CN201310334829.0A CN201310334829A CN103871797A CN 103871797 A CN103871797 A CN 103871797A CN 201310334829 A CN201310334829 A CN 201310334829A CN 103871797 A CN103871797 A CN 103871797A
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Abstract
The invention provides a circuit breaker and an electromagnetic tripping device. The circuit breaker can control types of springs and electromagnetic coils, and change of a tripping route of a movable core is not needed and an instantaneous tripping current value can be changed. The circuit breaker comprises an electromagnetic tripping device. If a current with a specified value flows in an electromagnetic coil, the movable core is attracted by a fixed core through an electromagnetic attraction force. After the movable core is attracted onto the fixed core, a movable contact part and a fixed contact part are separated through an opening and closing mechanism part, and therefore the circuit breaker carries out breaking operation. In the circuit breaker, an electromagnetic attraction force setting auxiliary core (36) which can move along the attraction direction is arranged between the movable core (35) and the fixed core (33). The position of electromagnetic attraction force setting auxiliary core (36) in the attraction direction is adjusted and therefore various tripping characteristics are set.
Description
Technical field
The present invention relates to a kind of circuit-breaker and electromagnetic trip device thereof, this circuit-breaker has electromagnetic trip device, this electromagnetic trip device has the solenoid being connected in series with movable contact and fixed contact therefor between power supply side terminal and load side terminal, and be configured in fixed iron core and the movable core in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, after described movable core attracted on described fixed iron core, by made described movable contact separate with described fixed contact therefor by open-close mechanism section, the action thereby circuit-breaker opens circuit.
Background technology
Circuit-breaker not only has switching function, i.e. the operation of the handle that has by circuit-breaker makes circuit on/off, and there is following important function,, in order to prevent in advance in the time flowing through overcurrent by electric wire or load equipment scaling loss and by circuit breaker.
The electromagnetic trip device with instantaneous tripping characteristic has: solenoid; Fixed iron core, it is arranged on this solenoid inside; And movable core, it is arranged on above-mentioned solenoid inside, by spring to the direction pretension away from fixed iron core, by with the large electric current such as short circuit current to magnetic excitation coil, thereby make movable core overcome the pretightning force of spring and be fixed unshakable in one's determination attraction.Thus, make open-close mechanism section action by moving of this movable core, carry out circuit breaker.
In order to emphasize that short time that other equipment are for example positioned at the fuse of circuit-breaker upstream allows characteristic and be positioned at the starting current characteristic of the motor in downstream, and must set subtly the value (being designated as below " instantaneous tripping current value ") as the instantaneous tripping electric current of the benchmark of instantaneous tripping characteristic.
For example, at IEC(International Electrotechnical Commission, international standard) in 60898, instantaneous tripping current value is set as respectively exceeding 3 times of rated current and is less than or equal to 5 times (B characteristics), exceedes 5 times and be less than or equal to 10 times (C characteristics) and exceed 10 times and be less than or equal to 20 times (D characteristics).
In the electromagnetic trip device of existing circuit-breaker, in the time that spring is installed, interval between movable core and fixed iron core, the amount of movement of movable core and this move required power (gravitation) and are determined.
If increase the kind of instantaneous tripping current value according to the requirement of above-mentioned standard, must prepare the spring of multiple load, in addition, must prepare the coil of the multiple number of turn, because the kind of the parts such as spring, solenoid increases, therefore exist for the management of above-mentioned parts and also become loaded down with trivial details problem, in addition, from the angle of part standard and cost degradation, also there is the problem that is difficult to realize standardization and cost degradation.
Therefore, following technology is disclosed, that is, in existing circuit-breaker, have control unit, this control unit is controlled (for example, with reference to patent documentation 1) to the pretightning force of the spring between the distance between movable core and fixed iron core or movable core and fixed iron core.
Patent documentation 1: TOHKEMY 2007-103123 communique
But, in above-mentioned control unit, because movable core can change the trip tripping operation stroke of action of open-close mechanism section for making circuit-breaker, what cause open-close mechanism section when action can momentum or the variation such as tripping operation surplus, therefore cannot easily dispatch from the factory and check and management that goods fluctuate.In addition, due to gravitation adjusting can not be carried out after tripgear has been assembled, therefore, only limit at the most the effect of the simplification that reaches standardization and manufacturing process.
Summary of the invention
The present invention proposes in order to solve above-mentioned problem, and its object is, can suppress the kind of spring and solenoid, and, can change instantaneous tripping current value and not change the tripping operation stroke of movable core.
Circuit-breaker involved in the present invention has electromagnetic trip device, and this electromagnetic trip device has: solenoid, and it is connected in series with movable contact and fixed contact therefor between power supply side terminal and load side terminal, and fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, after described movable core attracted on described fixed iron core, by made described movable contact separate with described fixed contact therefor by open-close mechanism section, the action thereby circuit-breaker opens circuit, in this circuit-breaker, between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, regulate by described electromagnetic attraction being set to the position of auxiliary iron core in the direction of described attraction by position adjusting mechanism, thereby be set as multiple tripping characteristic.
In addition, electromagnetic trip device involved in the present invention has: solenoid, and it is connected in series with the movable contact of described circuit-breaker and the fixed contact therefor of described circuit-breaker between the power supply side terminal of circuit-breaker and the load side terminal of described circuit-breaker; And fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, in this electromagnetic trip device, between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, by position adjusting mechanism, described electromagnetic attraction is set to the position of auxiliary iron core in the direction of described attraction and regulate.
The effect of invention
Circuit-breaker involved in the present invention has electromagnetic trip device, and this electromagnetic trip device has: solenoid, and it is connected in series with movable contact and fixed contact therefor between power supply side terminal and load side terminal, and fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, after described movable core attracted on described fixed iron core, by made described movable contact separate with described fixed contact therefor by open-close mechanism section, the action thereby circuit-breaker opens circuit, in this circuit-breaker, between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, regulate by described electromagnetic attraction being set to the position of auxiliary iron core in the direction of described attraction by position adjusting mechanism, thereby be set as multiple tripping characteristic, in addition, electromagnetic trip device involved in the present invention has: solenoid, it is connected in series with the movable contact of described circuit-breaker and the fixed contact therefor of described circuit-breaker between the power supply side terminal of circuit-breaker and the load side terminal of described circuit-breaker, and fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, in this electromagnetic trip device, between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, by position adjusting mechanism, described electromagnetic attraction being set to the position of auxiliary iron core in the direction of described attraction regulates, therefore, the present invention has the kind that can suppress spring and solenoid, and can change instantaneous tripping current value and not change the effect of the tripping operation stroke of movable core.
Accompanying drawing explanation
Fig. 1 is the figure that represents embodiments of the present invention 1, is the integrally-built figure that an example of circuit-breaker is shown with vertical profile end view.
Fig. 2 is the figure that represents embodiments of the present invention 1, is the figure that an example of the electromagnetic trip device of circuit-breaker is shown with oblique view.
Fig. 3 is the figure that represents embodiments of the present invention 1, is the figure that an example of the electromagnetic trip device of circuit-breaker is shown with vertical profile end view.
Fig. 4 is the figure that represents embodiments of the present invention 1, is the figure that an example of the electromagnetic trip device of circuit-breaker is shown with vertical view.
Fig. 5 is the figure that represents embodiments of the present invention 1, is the figure that an example of the electromagnetic trip device of circuit-breaker is shown with cross-sectional vertical view.
Fig. 6 is the figure that represents embodiments of the present invention 1, is the figure that an example of the attraction state of the electromagnetic trip device of circuit-breaker is shown with vertical profile end view.
Fig. 7 is the figure that represents embodiments of the present invention 1, is to illustrate that take vertical profile end view position adjustments that the electromagnetic attraction of the electromagnetic trip device of circuit-breaker is set to auxiliary iron core is as moving to the figure of an example of state of other position that attracts direction.
Fig. 8 is the figure that represents embodiments of the present invention 2, is the figure that other example of the electromagnetic trip device of circuit-breaker is shown with vertical profile end view.
Fig. 9 is the figure that represents embodiments of the present invention 3, is the figure that another example of the electromagnetic trip device of circuit-breaker is shown with vertical profile end view.
Embodiment
Execution mode 1
Below, based on Fig. 1 to Fig. 7, embodiments of the present invention 1 are described.Fig. 1 is the integrally-built figure that an example of circuit-breaker is shown with vertical profile end view, Fig. 2 is the figure that an example of the tripgear of circuit-breaker is shown with oblique view, Fig. 3 is the figure that an example of the tripgear of circuit-breaker is shown with vertical profile end view, Fig. 4 is the figure that an example of the tripgear of circuit-breaker is shown with vertical view, Fig. 5 is the figure that an example of the tripgear of circuit-breaker is shown with cross-sectional vertical view, Fig. 6 is the figure that an example of the attraction state of the tripgear of circuit-breaker is shown with vertical profile end view, Fig. 7 illustrates that take vertical profile end view position adjustments that the electromagnetic attraction of the tripgear of circuit-breaker is set to auxiliary iron core is as moving to the figure of an example of state of other positions that attract direction.
In Fig. 1 to Fig. 5, circuit-breaker 111 has pedestal 1, housing 2, power supply side terminal 3a, load side terminal 3b, movable piece support 4, construction bolt (electromagnetic trip device construction bolt) 5, trip(ping) bar 6, movable piece 7, movable contact 8a, fixed contact therefor 8b, explosion chamber 9, switch knob 10, open-close mechanism section 11 and electromagnetic trip device 21.
Pedestal 1 and housing 2 form by synthetic resin material, the housing of forming circuit circuit breaker 111.
Construction bolt (electromagnetic trip device construction bolt) 5 is by running through movable piece support 4 and screwing togather on the fixed iron core 33 that is arranged on electromagnetic trip device 21, thereby make electromagnetic trip device 21 and movable piece support 4 machineries and electrical connection, therefore, by this connection, electromagnetic trip device 21 is arranged on pedestal 1 via movable piece support 4.
Open-close mechanism section 11 has trip(ping) bar 6, if by the attraction action of the electromagnetic trip device 21 in the time that the super-high-current such as short circuit current or overcurrent flows through circuit, and by the action movie 38 of electromagnetic trip device 21, trip(ping) bar 6 is driven, the movable contact 8a of movable piece 7 leading sections is activated in the direction away from fixed contact therefor 8b by movable piece 7, as shown in Figure 1, movable contact 8a becomes the state separating completely with fixed contact therefor 8b.In the time that movable contact 8a separates with fixed contact therefor 8b, the electric arc arc extinguishing in explosion chamber 9 occurring between movable contact 8a and fixed contact therefor 8b.
In addition, by switch knob 10 is carried out to manual operation, also can movable contact 8a be separated with fixed contact therefor 8b via open-close mechanism section 11.
Below, the function of the detailed construction to electromagnetic trip device 21 and each several part describes.
Solenoid 31 is wound on the periphery of cylindric solenoid shaft 32, the end of its mains side is electrically connected with power supply side terminal 3a via flexible bonding conductor 313 between solenoid power supply side terminal, the end of load-side is via movable contact 8a and the fixed contact therefor 8b of on-state, and 3b is electrically connected with load side terminal.
Thus, as solenoid 31, in the situation that movably contact 8a and fixed contact therefor 8b are in on-state, flowing through circuital current is load current, and in the case of movable contact 8a with fixed contact therefor 8b in released state (the circuit-breaker tripped condition based on super-high-current and the state manually separating), do not flow through circuital current.
In the interior week of cylindric solenoid shaft 32, in solenoid shaft, all lug boss 32a and cylindric solenoid shaft 32 form.In solenoid shaft, all lug boss 32a are formed as, and at least in the moving range of cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, extend.
Be formed with movable core the first neck bullport 32ba at the central part of solenoid shaft upper end upper bottom portion 32b.
On columned fixed iron core 33, be formed with fixed iron core upper surface portion magnetic opposite face 33a around pressing the 33b of spring supporting portion fixed iron core top is cylindric.
The upper end side (movable core 35 sides) that fixed iron core top is cylindric presses the 33b of spring supporting portion and fixed iron core 33 and protrude integratedly the central part that is arranged on fixed iron core 33, is formed as concentric shape with solenoid 31, cylindric solenoid shaft 32 and movable core 35.
In addition, the cylindric upper end side (movable core 35 sides) of pressing the 33b of spring supporting portion on fixed iron core top, offer fixed iron core upper end and press spring-loaded and have bottom outlet 33ba, spring-loaded is pressed in this fixed iron core upper end has the cylindric 33b of spring supporting portion, solenoid 31, cylindric solenoid shaft 32 and the movable core 35 pressed in bottom outlet 33ba and fixed iron core top to be formed as concentric shape.
Yoke 34 has the yoke vertical component effect 34a and yoke holding section 34ba, the 34bb that are integrally formed each other.
The yoke holding section 34ba of the bottom (with the relative portion of fixed iron core 33) of yoke vertical component effect 34a engages with fixed iron core 33, with fixed iron core 33 magnetic couplings.
The yoke holding section 34bb of the upper end of yoke vertical component effect 34a (with the relative portion of the movable core first neck 35b of movable core 33) engages with solenoid shaft upper end upper bottom portion 32b.
Movable core solenoid shaft inward flange shape sliding part 35d can be entrenched in slidably interior week of solenoid shaft on above-below direction (fixed iron core 33 is to cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 directions that attract).
At the upside (that side contrary to fixed iron core 33) of movable core solenoid shaft inward flange shape sliding part 35d, 35d has formed movable core the first neck 35b with movable core solenoid shaft inward flange shape sliding part, and this movable core the first neck 35b can run through movably along described attraction direction movable core the first neck bullport 32ba inside of solenoid shaft upper end upper bottom portion 32b.
At the upside (that side contrary to fixed iron core 33) of movable core the first neck 35b, formed movable core the second neck 35c with movable core the first neck 35b, this movable core the second neck 35c movably the action movie of penetrating action sheet 38 by drive division movable core the second neck through hole 38ac inside.
At the upside (that side contrary to fixed iron core 33) of movable core the second neck 35c, the second neck 35c has formed movable core head 35a with movable core, on the surface of the upside (that side contrary to fixed iron core 33) of this movable core head 35a, is formed with movable core head upper surface slot part 35aa.
As movable core head 35a and movable core head upper surface slot part 35aa thereof, their top (that side contrary to fixed iron core 33) is not covered by drive division 38a by action movie, but is opened by the corresponding opening portion 38ab of drive division movable core head by the action movie of drive division 38a by action movie.
As movable core head 35a and movable core head upper surface slot part 35aa thereof, their top (that side contrary to fixed iron core 33) is not covered by drive division 38a by action movie but is open, therefore, if the instruments such as screwdriver insert from top from this open part, 35aa is chimeric with movable core head upper surface slot part, and for example clockwise rotate around solenoid 31 center, movable core 35 clockwise rotates around solenoid 31 center, if rotated counterclockwise on the contrary, movable core 35 rotates counterclockwise around solenoid 31 center.
Cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 has all internal thread part 36a, cylindric auxiliary movable core peripheral recess 36b and cylindric auxiliary movable core lower surface portion magnetic opposite face 36c in cylindric auxiliary movable core.
All internal thread part 36a are arranged on the internal thread part on the inner peripheral surface of cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 in cylindric auxiliary movable core, screw togather with the movable core lower end external thread part 35e of movable core 35.
Cylindric auxiliary movable core peripheral recess 36b is formed in the recess on the outer peripheral face of cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, on this cylindric auxiliary movable core peripheral recess 36b, engaging has all lug boss 32a in solenoid shaft, by engaging between all lug boss 32a in this cylindric auxiliary movable core peripheral recess 36b and solenoid shaft, because all lug boss 32a in solenoid shaft fix, therefore, cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 can not rotate around solenoid 31 center.
Because cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 can not rotate around solenoid 31 center, therefore, if movable core 35 for example clockwise rotates around solenoid 31 center, cylindric auxiliary movable core 36 (to that side contrary to fixed iron core 33) movement upward, if movable core 35 for example rotates counterclockwise around solenoid 31 center, cylindric auxiliary movable core 36 (to fixed iron core 33 sides) movement downwards.
The fixed iron core upper end that coiled type is embedded in fixed iron core 33 by one end of pressing spring 37 is pressed spring-loaded to be had in bottom outlet 33ba, and the movable core lower end that the other end is embedded in movable core 35 is pressed spring-loaded to be had in bottom outlet 35f.Thus, be fixed 33 attractions unshakable in one's determination and move towards the direction of fixed iron core 33 by cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, movable core 35 moves towards the direction of fixed iron core 33 together with cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, it is compressed that thereby coiled type is pressed pressing spring 37, if fixed iron core 33 is disengaged the attraction of cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, press the release force of pressing spring 37 to described attraction recovering state before by compressed coiled type, movable core 35 and cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 returns to the state before described attraction.
Below, describe for action.
In circuit-breaker 111 shown in Figure 1, in the time of normal power-up, the main circuit from power supply to load, there is not the state of overcurrent (, between power supply side terminal 3a and load side terminal 3b, the electric current flowing through via solenoid 31, movable piece 7, movable contact 8a and fixed contact therefor 8b is the state of steady-state current rather than overcurrent) under, the on-state that keeps movable contact 8a to contact with fixed contact therefor 8b.
In main circuit, the situation of the large electric current such as short circuit current flow (, between power supply side terminal 3a and load side terminal 3b, via solenoid 31, movable piece 7, movable contact 8a, and the situation of the electric current that flows through of the fixed contact therefor 8b large electric current such as be short circuit current) under, this large electric current flows through solenoid 31, because this electric current makes solenoid 31 excitations, the magnetic flux producing by solenoid 31, and at movable core 35, cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, on fixed iron core 33, produce along the electromagnetic force of the above-below direction of Fig. 1.
If the electromagnetic force being applied on cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 and movable core 35 exceedes coiled type by the pretightning force of pressing spring 37, as shown in Figure 6, cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 and movable core 35 are attracted to the fixed iron core upper surface portion magnetic opposite face 33a of fixed iron core 33 upper surfaces of solenoid 31 inside.If cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 and movable core 35 attracted on fixed iron core 33, link with the action of the caused movable core 35 of this attraction, the action movie 38 being rotated centered by pivot 38c is pressed trip(ping) bar 6, open-close mechanism section 11 moves, and circuit-breaker 111 is tripped.
Here, due to the gravitation between the iron core attracting each other and this iron core 33, 2 powers of the magnetic gap between 36 change pro rata, therefore, in example as shown in Figure 3, when state that primary clearance length L n between movable core solenoid shaft inward flange shape sliding part 35d and cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36 is L1, there are 3 times to the instantaneous tripping characteristic of rated current, in the time of the state that described Ln is L2 as shown in Figure 7, there are 10 times to the instantaneous tripping characteristic of rated current, even if also can realize above-mentioned instantaneous tripping characteristic in the situation that using identical parts.In addition, the movable core head upper surface slot part 35aa that the screwdriver of the upper surface of the movable core head 35a by movable core 35 tops is used, after electromagnetic trip device 21 assemblings finish, also can use the instruments such as screwdriver to regulate described primary clearance length L n,, can set instantaneous tripping characteristic arbitrarily.
According to present embodiment 1, by being predetermined distance by the magnetic gap length control between the fixed iron core 33 of solenoid 31 inside and auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, thereby can control gravitation, therefore can change instantaneous tripping current value, and without coiled type is changed by pressing spring 37 or solenoid 31, can not change the tripping operation stroke of movable core.
In addition, due to without coiled type is changed by pressing spring 37 or solenoid 31, can not change the tripping operation stroke of movable core, just can change instantaneous tripping current value, therefore can simplify and comprise coiled type and manage in interior manufacturing process by the identification of pressing spring 37 and solenoid 31, realize standardization and cost degradation.
In addition, even after the assembling of electromagnetic trip device 21 completes, also can regulate tripping current value by using the instruments such as screwdriver to make the top rotation of movable core 35, therefore, even instantaneous tripping current value in inspection drops on outside benchmark dispatching from the factory, also can be modified to qualified product, realize the raising of rate of finished products.
As mentioned above, the circuit-breaker of present embodiment 1 has electromagnetic trip device, and this electromagnetic trip device has: solenoid, and it is connected in series with movable contact and fixed contact therefor between power supply side terminal and load side terminal, and fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, after described movable core attracted on described movable core, by made described movable contact separate with described fixed contact therefor by open-close mechanism section, the action thereby circuit-breaker opens circuit, in this circuit-breaker, between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, regulate by described electromagnetic attraction being set to the position of auxiliary iron core in the direction of described attraction by position adjusting mechanism, thereby be set as multiple tripping characteristic.
In addition, as mentioned above, the electromagnetic trip device of present embodiment 1 has: solenoid, and it is connected in series with the movable contact of described circuit-breaker and the fixed contact therefor of described circuit-breaker between the power supply side terminal of circuit-breaker and the load side terminal of described circuit-breaker; And fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, in this electromagnetic trip device, between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, by position adjusting mechanism, described electromagnetic attraction is set to the position of auxiliary iron core in the direction of described attraction and regulate.
In addition, as mentioned above, in the circuit-breaker and electromagnetic trip device thereof of present embodiment 1, described electromagnetic attraction is set auxiliary iron core and is arranged on described movable core in the mode that can move along described attraction direction, in addition, described fixed iron core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other, and it is all orthogonal with described attraction direction that the described magnetic opposite face of described fixed iron core and described electromagnetic attraction are set the described magnetic opposite face of auxiliary iron core.
In addition, as mentioned above, in the circuit-breaker and electromagnetic trip device thereof of present embodiment 1, described electromagnetic attraction is set auxiliary iron core and is screwed togather and be arranged on described movable core in the mode that can move along described attraction direction, in addition, set on auxiliary iron core and be formed with internal thread part at described electromagnetic attraction, on described movable core, be formed with the external thread part screwing togather with the described internal thread part of described electromagnetic attraction setting auxiliary iron core, described movable core can rotate around the center of described solenoid, and described electromagnetic attraction setting auxiliary iron core can not rotate around the center of described solenoid, by described movable core is rotated around the center of described solenoid, thereby described electromagnetic attraction is set to the position of auxiliary iron core in described attraction direction to be regulated.
Execution mode 2
, use Fig. 8 below, embodiments of the present invention 2 are described.Fig. 8 is the figure that other examples of the electromagnetic trip device of circuit-breaker are shown with vertical profile end view.
In present embodiment 2, as shown in Figure 8, in the inside of the solenoid 31 of reeling, be inserted with actively roughly solenoid shaft 32 cylindraceous, one end of downside in the figure of solenoid shaft 32, is provided with the fixed iron core 33 of circular cone shape to become flexible chimeric mode.From another perspective, fixed iron core 33 responsible carries out the magnetic opposite face 33a of described attraction and cylindric auxiliary movable core (electromagnetic attraction setting auxiliary iron core) 36, and the responsible magnetic opposite face 36c that carries out described attraction is parallel to each other, and the described magnetic opposite face 36c that the described magnetic opposite face 33a of described fixed iron core and described electromagnetic attraction are set auxiliary iron core 36 all tilts with respect to described attraction direction.Structure and function beyond said structure are identical with described execution mode 1, and therefore the description thereof will be omitted.
In present embodiment 2; the magnetic opposite face 36c that electromagnetic attraction is set auxiliary iron core 36 is formed as along the shape of the responsible magnetic opposite face 33a attracting of fixed iron core 33; because magnetic relative area increases; what therefore, be also applicable to that instantaneous tripping current value is set lowlyer compared with common circuit-breaker carries out the low instantaneous type circuit-breaker of overcurrent protection etc. to semiconductor device.
Execution mode 3
, use Fig. 9 below, embodiments of the present invention 3 are described.Fig. 9 is the figure that another example of the electromagnetic trip device of circuit-breaker is shown with vertical profile end view.
In present embodiment 3, as shown in Figure 9, being illustrated in that fixed iron core 33 sides are provided with can dynamic auxiliary fixed iron core (electromagnetic attraction setting auxiliary iron core) 39, and be provided with can dynamic auxiliary fixed iron core position adjustments part 40 example.
Can dynamic auxiliary fixed iron core (electromagnetic attraction setting auxiliary iron core) 39 having can dynamic auxiliary fixed iron core upper end flange shape sliding part 39a, the magnetic opposite face 39aa of upper surface portion that can dynamic auxiliary fixed iron core upper end flange shape sliding part 39a, the bullport 39ab of the 33b of the spring supporting portion of pressing that can dynamic auxiliary fixed iron core upper end flange shape sliding part 39a, the cylindric sliding part 39b of lower end that can dynamic auxiliary fixed iron core 39, the tooth-strip part 39ba of the cylindric sliding part 39b in lower end that can dynamic auxiliary fixed iron core 39, and the annular aperture 39c of can dynamic auxiliary fixed iron core lower end cylindric sliding part guiding use.
Can dynamic auxiliary fixed iron core position adjustments part 40 have can dynamic auxiliary fixed iron core position adjustments part the inner pinion part 40a and adjusting grip part 40b that can dynamic auxiliary fixed iron core position adjustments part outer end.In addition, can dynamic auxiliary fixed iron core position adjustments part 40 be inserted into be arranged on fixed iron core 33 sidewall bottom place can dynamic auxiliary fixed iron core position adjustments part patchhole 33c in.
If make can dynamic auxiliary fixed iron core position adjustments part outer end adjusting grip part 40b rotate, pinion part 40a rotates, accompany with this rotation, the tooth-strip part 39ba engaging with pinion part 40a along the vertical direction (described attraction direction) is mobile, with tooth-strip part 39ba one can dynamic auxiliary fixed iron core (electromagnetic attraction setting auxiliary iron core) also along the vertical direction (described attraction direction) mobile.
Thus, with described execution mode 1 in the same manner, without coiled type is changed by pressing spring 37 or solenoid 31, can not change the tripping operation stroke of movable core, just can change instantaneous tripping current value.
Structure and function beyond said structure are identical with described execution mode 1, and therefore the description thereof will be omitted.
In addition; in present embodiment 3; with described execution mode 2 in the same manner; if be formed as the structure that the described magnetic opposite face of described movable core and the described magnetic opposite face of described electromagnetic attraction setting auxiliary iron core all tilt with respect to described attraction direction; with described execution mode 2 in the same manner; magnetic relative area increases, and what be also applicable to that instantaneous tripping current value is set lowlyer compared with common circuit-breaker carries out the low instantaneous type circuit-breaker of overcurrent protection etc. to semiconductor device.
In addition, in the each figure of Fig. 1 to Fig. 8, identical label represents identical or suitable part.
In addition, within the scope of the invention, can each execution mode suitably be changed, be omitted.
The explanation of label
1 pedestal, 2 housings, 3a power supply side terminal, 3b load side terminal,
4 movable piece supports, 5 construction bolts (electromagnetic trip device construction bolt),
6 trip(ping) bars, 7 movable pieces, the movable contact of 8a, 8b fixed contact therefor,
9 explosion chambers, 10 switch knobs, 11 open-close mechanism sections,
111 circuit-breakers, 21 electromagnetic trip devices, 31 solenoids,
Flexible bonding conductor between 313 solenoid power supply side terminals,
All lug bosses in 32 cylindric solenoid shaft, 32a solenoid shaft,
32b solenoid shaft upper end upper bottom portion,
The movable core first neck bullport of 32ba solenoid shaft upper end upper bottom portion,
33 fixed iron cores, 33a fixed iron core upper surface portion magnetic opposite face,
33b fixed iron core top is cylindric press spring supporting portion,
33ba fixed iron core upper end press spring-loaded have bottom outlet,
33c can dynamic auxiliary fixed iron core position adjustments part patchhole,
34 yokes, 34a yoke vertical component effect, 34b yoke holding section,
35 movable cores, 35a movable core head, 35aa movable core head upper surface slot part, 35b movable core the first neck, 35c movable core the second neck,
35d movable core solenoid shaft inward flange shape sliding part, 35e movable core lower end external thread part,
35f movable core lower end press spring-loaded have bottom outlet,
35g movable core lower surface portion magnetic opposite face,
36 cylindric auxiliary movable cores (electromagnetic attraction setting auxiliary iron core),
All internal thread parts in the cylindric auxiliary movable core of 36a, the cylindric auxiliary movable core peripheral recess of 36b,
The cylindric auxiliary movable core lower surface portion magnetic opposite face of 36c,
37 coiled types press pressing spring, 38 action movies, 38a action movie by drive division,
38aa action movie by drive division movable core head holding section,
38ab action movie by the corresponding opening portion of drive division movable core head,
38ac action movie by drive division movable core the second neck through hole,
39 can dynamic auxiliary fixed iron core (electromagnetic attraction setting auxiliary iron core),
39a can dynamic auxiliary fixed iron core upper end flange shape sliding part,
39aa can dynamic auxiliary fixed iron core upper end flange shape sliding part upper surface portion magnetic opposite face,
39ab can dynamic auxiliary fixed iron core upper end flange shape sliding part the bullport of pressing spring supporting portion,
39b can dynamic auxiliary fixed iron core the cylindric sliding part in lower end,
39ba can dynamic auxiliary fixed iron core the cylindric sliding part in lower end tooth-strip part,
The annular aperture of can the dynamic auxiliary fixed iron core lower end cylindric sliding part guiding of 39c use,
40 can dynamic auxiliary fixed iron core position adjustments part,
40a can dynamic auxiliary fixed iron core position adjustments part the inner pinion part,
40b can dynamic auxiliary fixed iron core position adjustments part outer end adjusting grip part,
Primary clearance between Ln, L1, the cylindric auxiliary movable core of L2 (electromagnetic attraction setting auxiliary iron core) and fixed iron core (can dynamic auxiliary fixed iron core (electromagnetic attraction setting auxiliary iron core) and movable core between primary clearance).
Claims (18)
1. a circuit-breaker, it has electromagnetic trip device, and this electromagnetic trip device has: solenoid, it is connected in series with movable contact and fixed contact therefor between power supply side terminal and load side terminal; And fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction, after described movable core attracted on described fixed iron core, by made described movable contact separate with described fixed contact therefor by open-close mechanism section, the action thereby circuit-breaker opens circuit
This circuit-breaker is characterised in that,
Between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, regulate by described electromagnetic attraction being set to the position of auxiliary iron core in the direction of described attraction by position adjusting mechanism, thereby be set as multiple tripping characteristic.
2. circuit-breaker according to claim 1, is characterized in that,
Described electromagnetic attraction is set auxiliary iron core and is arranged on described movable core, can move along the direction of described attraction.
3. circuit-breaker according to claim 1, is characterized in that,
Described fixed iron core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face of the described magnetic opposite face of described fixed iron core and described electromagnetic attraction setting auxiliary iron core is all orthogonal with the direction of described attraction.
4. circuit-breaker according to claim 1, is characterized in that,
Described fixed iron core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face that the described magnetic opposite face of described fixed iron core and described electromagnetic attraction are set auxiliary iron core all tilts with respect to the direction of described attraction.
5. according to the circuit-breaker described in any one in claim 1 to 4, it is characterized in that,
Described electromagnetic attraction setting auxiliary iron core screws togather and is arranged on described movable core, can move along the direction of described attraction.
6. according to the circuit-breaker described in any one in claim 1 to 4, it is characterized in that,
Set on auxiliary iron core and be formed with internal thread part at described electromagnetic attraction,
On described movable core, be formed with the external thread part screwing togather with the described internal thread part of described electromagnetic attraction setting auxiliary iron core,
Described movable core can rotate around the center of described solenoid,
Described electromagnetic attraction is set auxiliary iron core and can not be rotated around the center of described solenoid,
By described movable core is rotated around the center of described solenoid, thereby being set to the position of auxiliary iron core in the direction of described attraction, described electromagnetic attraction regulates.
7. circuit-breaker according to claim 1, is characterized in that,
Described electromagnetic attraction is set auxiliary iron core and is arranged on described fixed iron core, can move along the direction of described attraction.
8. circuit-breaker according to claim 7, is characterized in that,
Described movable core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face of the described magnetic opposite face of described movable core and described electromagnetic attraction setting auxiliary iron core is all orthogonal with the direction of described attraction.
9. circuit-breaker according to claim 7, is characterized in that,
Described movable core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face that the described magnetic opposite face of described movable core and described electromagnetic attraction are set auxiliary iron core all tilts with respect to the direction of described attraction.
10. an electromagnetic trip device, it has: solenoid, and it is connected in series with the movable contact of described circuit-breaker and the fixed contact therefor of described circuit-breaker between the power supply side terminal of circuit-breaker and the load side terminal of described circuit-breaker; And fixed iron core and movable core, they are configured in the magnetic circuit of this solenoid, if flow through the electric current of prescribed level in described solenoid, described movable core is subject to described fixed iron core attraction by electromagnetic attraction,
This electromagnetic trip device is characterised in that,
Between described movable core and described fixed iron core, be provided with the electromagnetic attraction that can move along the direction of described attraction and set auxiliary iron core, by position adjusting mechanism, described electromagnetic attraction is set to the position of auxiliary iron core in the direction of described attraction and regulate.
11. electromagnetic trip devices according to claim 10, is characterized in that,
Described electromagnetic attraction is set auxiliary iron core and is arranged on described movable core, can move along the direction of described attraction.
12. electromagnetic trip devices according to claim 10, is characterized in that,
Described fixed iron core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face of the described magnetic opposite face of described fixed iron core and described electromagnetic attraction setting auxiliary iron core is all orthogonal with the direction of described attraction.
13. electromagnetic trip devices according to claim 10, is characterized in that,
Described fixed iron core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face that the described magnetic opposite face of described fixed iron core and described electromagnetic attraction are set auxiliary iron core all tilts with respect to the direction of described attraction.
14. according to claim 10 to the electromagnetic trip device described in any one in 13, it is characterized in that,
Described electromagnetic attraction setting auxiliary iron core screws togather and is arranged on described movable core, can move along the direction of described attraction.
15. according to claim 10 to the electromagnetic trip device described in any one in 13, it is characterized in that,
Set on auxiliary iron core and be formed with internal thread part at described electromagnetic attraction,
On described movable core, be formed with the external thread part screwing togather with the described internal thread part of described electromagnetic attraction setting auxiliary iron core,
Described movable core can rotate around the center of described solenoid,
Described electromagnetic attraction is set auxiliary iron core and can not be rotated around the center of described solenoid,
By making the center rotating of described movable core around described solenoid, thereby being set to the position of auxiliary iron core in the direction of described attraction, described electromagnetic attraction regulates.
16. electromagnetic trip devices according to claim 10, is characterized in that,
Described electromagnetic attraction is set auxiliary iron core and is arranged on described fixed iron core, can move along the direction of described attraction.
17. electromagnetic trip devices according to claim 16, is characterized in that,
Described movable core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face of the described magnetic opposite face of described movable core and described electromagnetic attraction setting auxiliary iron core is all orthogonal with the direction of described attraction.
18. electromagnetic trip devices according to claim 16, is characterized in that,
Described movable core responsible carries out that the magnetic opposite face of described attraction and described electromagnetic attraction set auxiliary iron core, and the responsible magnetic opposite face that carries out described attraction is parallel to each other,
The described magnetic opposite face that the described magnetic opposite face of described movable core and described electromagnetic attraction are set auxiliary iron core all tilts with respect to the direction of described attraction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012270922A JP6009340B2 (en) | 2012-12-12 | 2012-12-12 | Circuit breaker and electromagnetic trip device |
| JP2012-270922 | 2012-12-12 |
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| Publication Number | Publication Date |
|---|---|
| CN103871797A true CN103871797A (en) | 2014-06-18 |
| CN103871797B CN103871797B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310334829.0A Active CN103871797B (en) | 2012-12-12 | 2013-08-02 | Circuit-breaker and electromagnetic trip device thereof |
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| JP (1) | JP6009340B2 (en) |
| CN (1) | CN103871797B (en) |
Cited By (5)
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| CN104124114A (en) * | 2014-06-24 | 2014-10-29 | 上海诺雅克电气有限公司 | Short-circuit protection action current adjusting method and device for multi-pole magnetic release |
| CN108321056A (en) * | 2018-04-02 | 2018-07-24 | 浙江智美电气有限公司 | A kind of breaker pushed with electromagnet |
| CN108695118A (en) * | 2017-04-07 | 2018-10-23 | 王静洋 | A kind of circuit breaker operation mechanism with solenoid actuated |
| CN111886668A (en) * | 2018-03-23 | 2020-11-03 | 三菱电机株式会社 | Trip device |
| CN112514018A (en) * | 2018-07-31 | 2021-03-16 | 三菱电机株式会社 | Circuit breaker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7407565B2 (en) * | 2019-11-12 | 2024-01-04 | 河村電器産業株式会社 | Tripping devices and circuit breakers |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103871797B (en) | 2016-03-16 |
| JP2014116241A (en) | 2014-06-26 |
| JP6009340B2 (en) | 2016-10-19 |
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