CN102013363A - Miniature circuit breaker with short circuit self-locking function - Google Patents
Miniature circuit breaker with short circuit self-locking function Download PDFInfo
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- CN102013363A CN102013363A CN2010105201992A CN201010520199A CN102013363A CN 102013363 A CN102013363 A CN 102013363A CN 2010105201992 A CN2010105201992 A CN 2010105201992A CN 201010520199 A CN201010520199 A CN 201010520199A CN 102013363 A CN102013363 A CN 102013363A
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Abstract
The invention discloses a miniature circuit breaker with short circuit self-locking function. The miniature circuit breaker comprises a first miniature circuit breaker and a miniature circuit breaker action output device, wherein the first miniature circuit breaker is arranged on a power line to produce a circuit break action when a short circuit fault occurs; the miniature circuit breaker action output device comprises a shell; a motor, an acting unit, a control unit and a short circuit protection linkage unit are arranged in the shell; the motor is used for outputting torque; the acting unit acquires the torque output by the motor and converts the torque into the switch-on or the circuit break action of the first miniature circuit breaker; the control unit controls the rotation and the stop of the motor; and the short circuit protection linkage unit provides an action signal for the control unit when the first miniature circuit breaker produces the circuit break action due to the short circuit fault, so that the control unit stops the rotation of the motor after the first miniature circuit breaker is short-circuited.
Description
Technical field
What the present invention relates to is a kind of miniature circuit breaker linkage groups, particularly be a kind of miniature circuit breaker with short circuit self-locking function.
Background technology
Switch switchgear for power department is the assurance Electrical Safety, carry out circuit switches imperative equipment, and along with the release of country to the intelligent grid plan, it is an important direction that miniature circuit breaker equipment need stride forward to intellectuality.Wherein, the break-make of controlling power circuit by the miniature circuit breaker group is a kind of important service orientation, how to realize the automatic closing of miniature circuit breaker group or open circuit the action be a very important function.At single miniature circuit breaker, can realize by electrically operated institution usually at present, but the action that present electrically operated institution only can be controlled a miniature circuit breaker can't realize controlling the action of a plurality of miniature circuit breakers; Most of electrically operated institutions are realized closing a floodgate or cut-out function at big switch simultaneously, its function singleness, and intelligent degree is crossed the low needs that can't satisfy existing reality; The more important thing is that present electrically operated institution is mainly by linkage realization action and Position Control, this often requires motor to realize the rotating function, control is closed a floodgate or is disconnected, and this has just caused the electrically operated institution volume ratio bigger, and linkage is provided with the drawback of more complicated.
Particularly when being short-circuited fault, though corresponding miniature circuit breaker has produced the action of opening circuit by self-protection, electrically operated institution does not have intellectuality, still will carry out feed motion, thereby has caused the major safety risks of electricity consumption.
In view of above-mentioned defective, creator of the present invention is through research and practice have obtained this creation finally for a long time.
Summary of the invention
The objective of the invention is to, a kind of miniature circuit breaker with short circuit self-locking function is provided, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution used in the present invention is, a kind of miniature circuit breaker with short circuit self-locking function is provided, and it comprises:
One first miniature circuit breaker, it is arranged on the described power line, produces the action of opening circuit when being short-circuited fault;
One miniature circuit breaker action output device, it comprises: a housing is provided with in described housing:
One motor, it is in order to export a moment of torsion;
One motor unit, it obtains the moment of torsion of described motor output, and is converted to the combined floodgate of described first miniature circuit breaker or opens circuit action;
One control unit, it is controlled the commentaries on classics of described motor and stops;
One short-circuit protection interlock unit; when it opens circuit action at described first miniature circuit breaker because of short trouble produces; give described control unit one actuating signal, make described control unit after described first miniature circuit breaker is short-circuited, described motor be stopped operating.
Wherein, described motor unit comprises: a rotation section, a clicking section and a STATEMENT OF FEDERALLY SPONSORED, and wherein, described rotation section obtains the moment of torsion of described motor output; Described clicking section is that a driving lever is fixedly arranged on the above clicking section, described rotation section and drives described STATEMENT OF FEDERALLY SPONSORED swing; Described STATEMENT OF FEDERALLY SPONSORED is connected with the actuating mechanism of described first miniature circuit breaker, drives described first miniature circuit breaker and produces feed motion or open circuit action.
Wherein, described control unit comprises:
One power-switching circuit, it obtains rectification behind the voltage signal, filtering and step-down from described phase line and handles, and is powering with electrical component of described control unit;
One position detecting circuit when it detects described first miniature circuit breaker arrival target location, sends first control signal;
One triggers element, and it obtains described first control signal, triggers described motor and changes or stop.
Preferable, described position detecting circuit comprises:
One first limit switch, one end ground connection, and by position detecting mechanism triggering;
One microprocessor, it is connected with described first limit switch, exports described first control signal when the described first limit switch state changes; Wherein, described position detecting mechanism comprises:
One first frizzen, its first end are articulated in by a hinge in the housing of described miniature circuit breaker action output device, its second end have one with described hinge extension rod in the same way, and second end places on described first limit switch;
One first deep-slotted chip breaker, it is arranged on the housing of described miniature circuit breaker action output device, and described extension rod stretches out from the housing of described miniature circuit breaker action output device;
One second deep-slotted chip breaker, it is arranged on the described first miniature circuit breaker housing, and described extension rod stretches into and combines in the link gear of described first miniature circuit breaker from described first deep-slotted chip breaker;
Described triggering element is one first triode, and its base stage is connected with the described first limit switch other end, its grounded emitter, and its collector electrode is connected with described motor.
Preferable, described position detecting circuit comprises:
One first limit switch, one end ground connection, and by position detecting mechanism triggering, wherein, described position detecting mechanism comprises:
One first frizzen, its first end are articulated in by a hinge in the housing of described miniature circuit breaker action output device, its second end have one with described hinge extension rod in the same way, and second end places on described first limit switch;
One first deep-slotted chip breaker, it is arranged on the housing of described miniature circuit breaker action output device, and described extension rod stretches out from the housing of described miniature circuit breaker action output device;
One second deep-slotted chip breaker, it is arranged on the described first miniature circuit breaker housing, and described extension rod stretches into and combines in the link gear of described first miniature circuit breaker from described first deep-slotted chip breaker;
Described triggering element is one first triode, and its base stage is connected with the described first limit switch other end, its grounded emitter, and its collector electrode is connected with described motor.
Preferable, described short-circuit protection interlock unit comprises:
One second limit switch, one end ground connection, and by short-circuit detecting mechanism triggering;
Described microprocessor, it is connected with described second limit switch, output and keep described first control signal when the described second limit switch state changes; Wherein, described short-circuit detecting mechanism comprises:
One short-circuit detecting lever, it is articulated in the housing of described miniature circuit breaker action output device, and the one end extends to outside the described housing, when described short-circuit detecting lever rotates described second limit switch is produced triggering;
One back-moving spring, it places described hinge place, with so that described short-circuit detecting lever reset.
Preferable, described short-circuit protection interlock unit comprises:
One second triode, its grounded emitter, its collector electrode is connected with described first transistor base;
One second limit switch, it is connected with described second transistor base, and triggers by a short-circuit detecting mechanism,
Wherein, described short-circuit detecting mechanism comprises: one second universal driving shaft, the one end is fixedly arranged on the short circuit short circuit detection triggering mechanism of at least one described miniature circuit breaker, described second universal driving shaft stretches out from the slotted eye of described miniature circuit breaker side, insert in the described housing, and place on described second limit switch.
Preferable, also comprise: a short circuit indicating circuit, in order to indicate when described miniature circuit breaker place circuit is short-circuited, it is a LED, it is connected with described second limit switch.
Preferable, also comprise: a delay circuit, it comprises: one first electric capacity, the one end links to each other with the base stage of described first triode, other end ground connection;
One discharge resistance, the one end links to each other with the base stage of described first triode, other end ground connection.
One voltage-stabiliser tube is in order to carry out voltage stabilizing.
Preferable, also comprise: an inspection switch, it places between described power-switching circuit and the phase line, cuts off the supply of electric power of phase line to power-switching circuit when needs overhaul.
Preferable, described position detecting circuit comprises:
One photoelectrical coupler, its output is connected with the control end of described triggering element;
One sampling electronic circuit, it obtains voltage signal from described phase line, is connected with the input of described photoelectrical coupler after rectification, filtering and voltage stabilizing.
Preferable, also comprise: an external control unit, it makes described motor action in order to receive external control signal.
Wherein, described external control unit comprises:
One the 3rd triode, its base stage obtain outside described external control signal, its grounded emitter;
One the 4th triode, its base stage is connected with described the 3rd transistor collector, and its emitter is connected with the collector electrode of described second triode.
Preferable, also comprise: a communicating circuit, it is in order to carry out data interaction with external equipment;
One memory circuit is in order to stored program and corresponding data.
Preferable, also comprise: a temperature detection chip, it is connected with described microprocessor, exports a triggering signal and give described processor when temperature is higher than a certain threshold value.
Preferable, also comprise one second miniature circuit breaker, make described first miniature circuit breaker and second miniature circuit breaker be arranged at the both sides of described miniature circuit breaker action output device respectively, and described STATEMENT OF FEDERALLY SPONSORED combine with the actuating mechanism of described second miniature circuit breaker.
Preferable, described rotation section is a disk, it is connected with described motor output shaft.
Preferable, described rotation section is a worm gear dish, and it is meshed with the worm screw that is provided with on the described motor output shaft.
Preferable, described STATEMENT OF FEDERALLY SPONSORED comprises: shank on the other hand, its be coupling with described housing in, its top extends to outside the housing, its low side extension and described clicking section offset;
One linkage portion, it is set in the handle top of described handle portion and described first miniature circuit breaker and second miniature circuit breaker.
Preferable, described STATEMENT OF FEDERALLY SPONSORED comprises: a rotating part, its be coupling with described housing in, it has an interlock key and inserts the hole, its low side and described clicking section offset;
One linkage portion, it is set in the handle top of described handle portion and described first miniature circuit breaker and second miniature circuit breaker.
Preferable, described linkage portion is one to have the connecting rod of conduit, and the handle of described first miniature circuit breaker and second miniature circuit breaker and described handle portion top are located in the described conduit.
Preferable, described linkage portion is a connecting rod, and the handle of described miniature circuit breaker and described handle portion top are provided with through hole, and described connecting rod passes described through hole.
Preferable, described linkage portion is the interlock key, the handle of described first miniature circuit breaker and second miniature circuit breaker is respectively equipped with an interlock key and inserts the hole, the interlock key that embeds described first miniature circuit breaker and the second miniature circuit breaker handle and described rotating part respectively of described interlock key is inserted in the hole, thereby realizes interlock.
Wherein, described power-switching circuit comprises:
One diode, it is in order to rectification;
One second electric capacity, it is in order to carry out filtering;
One dropping resistor, it is in order to carry out step-down;
One voltage-stabiliser tube, it is in order to carry out voltage stabilizing.
Beneficial effect of the present invention compared with the prior art is: 1, diverse in function, and intelligent degree height can satisfy existing actual needs;
3, volume is little, and mechanism is simple;
4, when being short-circuited fault, can carry out self-locking, safe;
5, can and described miniature circuit breaker between form Control and Feedback, improve the precision of control.
Description of drawings
Fig. 1 has the schematic perspective view of the miniature circuit breaker embodiment one of short circuit self-locking function for the present invention;
Figure 1A has the schematic perspective view of miniature circuit breaker action output device embodiment one in the miniature circuit breaker of short circuit self-locking function for the present invention;
Figure 1B has the schematic perspective view of miniature circuit breaker action output device embodiment two in the miniature circuit breaker of short circuit self-locking function for the present invention;
Fig. 2 A has the schematic perspective view one that miniature circuit breaker action output device embodiment one decomposes in the miniature circuit breaker of short circuit self-locking function for the present invention;
Fig. 2 B has the schematic perspective view two that miniature circuit breaker action output device embodiment one decomposes in the miniature circuit breaker of short circuit self-locking function for the present invention;
Fig. 3 has in the miniature circuit breaker of short circuit self-locking function among the miniature circuit breaker action output device embodiment one position detecting mechanism and short-circuit detecting mechanism with respect to miniature circuit breaker internal structure corresponding diagram for the present invention;
Fig. 4 has for the present invention in the miniature circuit breaker of short circuit self-locking function and is provided with the in-house structure corresponding diagram of short-circuit detecting among the miniature circuit breaker action output device embodiment one;
Fig. 5 is the schematic perspective view of Fig. 4 correspondence;
Fig. 6 A has the schematic perspective view of miniature circuit breaker action output device embodiment one user mode in the miniature circuit breaker of short circuit self-locking function for the present invention;
Fig. 6 B has the schematic perspective view of miniature circuit breaker action output device embodiment two user modes in the miniature circuit breaker of short circuit self-locking function for the present invention;
Fig. 6 C has the schematic perspective view of miniature circuit breaker action output device embodiment three user modes in the miniature circuit breaker of short circuit self-locking function for the present invention;
Fig. 6 D has in the miniature circuit breaker of short circuit self-locking function structure corresponding in the miniature circuit breaker action output device and Fig. 4 and miniature circuit breaker in conjunction with back cut-away view for the present invention;
Fig. 7 A has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram one in the miniature circuit breaker action output device for the present invention;
Fig. 7 B has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram two in the miniature circuit breaker action output device for the present invention;
Fig. 7 C has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram three in the miniature circuit breaker action output device for the present invention;
Fig. 7 D has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram four in the miniature circuit breaker action output device for the present invention;
Fig. 7 E has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram five in the miniature circuit breaker action output device for the present invention.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
See also shown in Figure 1ly, it has the schematic perspective view of the miniature circuit breaker embodiment one of short circuit self-locking function for the present invention; Described miniature circuit breaker with short circuit self-locking function comprises: one first miniature circuit breaker 61 and the miniature circuit breaker action output device 1 that carries out combination by a linkage portion 21, and export the described linkage portion 21 of drive by the action of described miniature circuit breaker action output device 1 and make described first miniature circuit breaker 61 realize assigned operations; Can certainly increase by one second miniature circuit breaker 62, itself and described first miniature circuit breaker 61 are arranged at the both sides of described miniature circuit breaker action output device 1 respectively, carry out connecting moves by described linkage portion 21.
Following description is connected to example with described first miniature circuit breaker and second miniature circuit breaker respectively with described miniature circuit breaker action output device, and abbreviates described first miniature circuit breaker and second miniature circuit breaker as miniature circuit breaker.
See also shown in Figure 1A, it has the schematic perspective view of miniature circuit breaker action output device embodiment one in the miniature circuit breaker of short circuit self-locking function for the present invention, described miniature circuit breaker action output device comprises: a housing 10, shank 22 stretches out outside the described housing 10 on the other hand, by described linkage portion 21 handle of described handle portion 22 with miniature circuit breaker connected, effect by described housing 10 internally-powered mechanisms and motor unit, drive the swing of described handle portion 22, thereby drive the disconnection and the closure of the handle and then the realization miniature circuit breaker of described miniature circuit breaker.
The power source of described control unit is to derive from described miniature circuit breaker, it comprises it being few a connector 32, it can adopt pin type structure, in order to corresponding with the connection chute on the described miniature circuit breaker, described housing 10 is provided with corresponding butt joint chute 11, in order to adjust the tightness of combination, this connector 32 (33) can obtain power supply, also can obtain control signal, the power supply signal that obtains can be through the signal after the step-down processing in described miniature circuit breaker, also can be original phase line voltage, circuit by described miniature circuit breaker action output device inside is handled accordingly, on described housing 10, also be provided with an inspection switch 31, when overhauling, use by needs, in case press down, described miniature circuit breaker action output device promptly can not automatic closing or disconnection work.
See also shown in Fig. 2 A, it has the schematic perspective view of miniature circuit breaker action output device embodiment two in the miniature circuit breaker of short circuit self-locking function for the present invention, the difference of itself and the foregoing description one is, for described miniature circuit breaker action output device handle portion is not set, but an open-work is set on described housing 10, described motor unit is provided with a rotating part in housing 10 inside, the interlock key is set on the described rotating part inserts the hole; The key 211 of being arranged to link of the linkage portion among the embodiment one simultaneously, 212, the miniature circuit breaker that is connected for described miniature circuit breaker action output device then also will improve its link gear, normally an interlock key is set and inserts the hole at the handle middle part of described miniature circuit breaker, described interlock key 211,212 1 ends are inserted the hole with the interlock key on the described rotating part and are combined, the other end is inserted the hole with the interlock key on the described miniature circuit breaker handle and is combined, thereby will rotate by described interlock key 211 by the action of rotating part, 212 pass to the handle of described miniature circuit breaker, thereby realize the operation of appointment.
Assigned operation of the present invention is interpreted as at the open-circuit operation of miniature circuit breaker or closing operation, and assigned address is interpreted as off position or closing position.
See also the schematic perspective view one that miniature circuit breaker action output device embodiment one decomposes in Fig. 2 A has short circuit self-locking function for the present invention the miniature circuit breaker, the housing of described miniature circuit breaker action output device is made up of three parts, be respectively the left side shell 101, right side shell 103 and be positioned in the middle of supporting clapboard 102, at least one of them is provided with butt joint chute 11 on described left and right side shell 101,103, and in order to realize the arc-shaped slot 12 of position probing; What described actuating unit adopted is motor 35, it places the holding hole of described supporting clapboard 102, described motor unit, it is in order to the combined floodgate of realizing described miniature circuit breaker or open circuit action, it comprises: a rotation section 36, a clicking section 24 and a STATEMENT OF FEDERALLY SPONSORED, and wherein, described rotation section 36 obtains the moment of torsion of described motor 35 outputs, what adopt here is a disk, and it is connected with described motor 35 output shafts; Described clicking section 24 is that a poke rod places on the described disk, and it drives described STATEMENT OF FEDERALLY SPONSORED swing; Described STATEMENT OF FEDERALLY SPONSORED comprises: described handle portion 22, and it is coupling in described housing 10, and its top extends to outside the housing 10, and its bottom and described clicking section 24 offset; Described linkage portion 21, it is set on the handle of described handle portion 22 and described miniature circuit breaker, produces feed motion or opens circuit action by driving described miniature circuit breaker;
Described control unit 34 is controlled the commentaries on classics of described motor 35 and is stopped, and it can place in the described housing 10 with modular form, and modular structure is convenient to change, thereby helps saving cost.
The miniature circuit breaker that the present invention has short circuit self-locking function has a location status testing agency, and it closes a floodgate or the action of opening circuit is when reaching assigned address at described miniature circuit breaker, triggers described control unit and controls described motor and stop operating.Owing to adopt the kind of drive of motor 35, described motor 35 carries out 360 degree at work and rotates in the same way, then, it rotates when driving described disk 36, described clicking section 24 certainly will promote described handle portion 22 and rotate, thereby drive the handle swing that described linkage portion 21 drives described miniature circuit breaker, the combined floodgate of final realization miniature circuit breaker and disconnection action when combined floodgate or after disconnecting the arrival assigned address, must be controlled described motor 35 and stop operating.
Described location status testing agency comprises: one first frizzen 23, its first end is articulated in the housing 10 of described miniature circuit breaker action output device by a hinge, its second end have one with described hinge extension rod in the same way, and the bottom of described second end is provided with first limit switch;
One first deep-slotted chip breaker 12, it is arranged on the housing 10 of described miniature circuit breaker action output device, and described extension rod stretches out by the housing 10 of first deep-slotted chip breaker 12 from described miniature circuit breaker action output device;
One second deep-slotted chip breaker 622, it is arranged on the described miniature circuit breaker housing, and corresponding with described first deep-slotted chip breaker 12, and described extension rod stretches into and combines in the link gear of described first miniature circuit breaker from described second deep-slotted chip breaker 622.When described miniature circuit breaker reaches appointed positions in closing course, then described extension rod is driven by described link gear, thereby make described extension rod swing, and then drive described first frizzen 23 and swing around described hinge, thereby press described first limit switch (referring to shown in Figure 3), and described first frizzen 23 lower ends are provided with first limit switch.Because under some application feature, each was in conjunction with at least one miniature circuit breaker about described miniature circuit breaker action output device was wanted, therefore as long as have a miniature circuit breaker to close a floodgate or open circuit and put in place, described motor 35 is stopped operating, for this reason for described miniature circuit breaker action output device at both sides combined circuit device all correspondence be provided with a described position detecting mechanism, present embodiment just is provided with two.
Supporting clapboard 102 for described miniature circuit breaker action output device is equipped with described control unit module 34 in addition, and it extends described connector 33, and the butt joint chute 11 by described housing 10 sides appears.
See also shown in Fig. 2 B, it has the schematic perspective view two that miniature circuit breaker action output device embodiment one decomposes in the miniature circuit breaker of short circuit self-locking function for the present invention, the difference of itself and above-mentioned Fig. 2 A is, in the rotation section described in the described motor unit 36 is a worm gear dish, and it is meshed with the worm screw that is provided with on described motor 35 output shafts.Described clicking section 24 is arranged on the described worm gear dish.
See also shown in Figure 3ly, it has in the miniature circuit breaker of short circuit self-locking function among the miniature circuit breaker action output device embodiment one position detecting mechanism and short-circuit detecting mechanism with respect to miniature circuit breaker internal structure corresponding diagram for the present invention; For under described miniature circuit breaker action output device and the situation that the miniature circuit breaker with short circuit self-locking function cooperates, also has the function that when short trouble takes place, can not produce feed motion automatically.Being provided with a short-circuit detecting mechanism in the enclosure interior of described miniature circuit breaker action output device comprises: one second universal driving shaft 411, the one end is fixedly arranged on the short circuit short circuit detection triggering mechanism of at least one described miniature circuit breaker, described second universal driving shaft 411 stretches out from the annular slotted hole of described miniature circuit breaker side, insert in the described housing 10, and place on one second limit switch 371.
Described miniature circuit breaker with short circuit self-locking function comprises: a turning arm 41, it can rotate in described miniature circuit breaker housing around a rotating shaft, which is provided with torsion spring, and described turning arm 41 has one and interferes end, and it is because the torsion spring effect makes its other end lean mutually with the armature end of described overcurrent release 44; One self-locking body 42, its lower end have a groove and articulate mutually with described interference end; And the inner back-moving spring that leans with described miniature circuit breaker housing that is provided with; When being short-circuited fault, the armature end action of described overcurrent release 44, thereby promote a gangbar 43 actions in the described miniature circuit breaker linkage unit, thereby make described miniature circuit breaker produce the action of opening circuit, because the described turning arm 41 of effect of torsion spring rotates, thereby described interference end and described groove are broken away from, under the effect of described back-moving spring, move on the described self-locking body 42, from the through hole of described miniature circuit breaker housing, stretch out, the interference end of its bottom and described turning arm 41 leans, thereby described turning arm 41 bottoms and described armature end are leant, thereby described overcurrent release 44 can't be resetted, thereby described linkage unit can't be worked, and then miniature circuit breaker is in self-locking state and can't closes a floodgate, and has only described self-locking body 42 is pressed in the described housing, could normally finish feed motion.For described miniature circuit breaker action output device, described second universal driving shaft 411 can be arranged on the described turning arm 41, because the rotation of described turning arm 41, thereby described second universal driving shaft 411 is pressed on described second limit switch 371, thereby give 52 1 control signals of circuit board of described control unit, described motor 35 can't be rotated, need to prove sometimes in order to increase the output torque of motor 35, also to set up a decelerator 38, be connected with rotation section 36 by described decelerator 38.。
Described miniature circuit breaker action output device comprises an external control signal incoming end 51, is provided with the external control signal processing circuit on the circuit board 52 of described control unit, in order to realize by the external control signal described miniature circuit breaker action output device.
For described control unit 34 will in following content, describing of specific implementation function how.
See also shown in Figure 4ly, it has for the present invention in the miniature circuit breaker of short circuit self-locking function and is provided with the in-house structure corresponding diagram of short-circuit detecting among the miniature circuit breaker action output device embodiment one; Described short-circuit detecting mechanism comprises:
One short-circuit detecting lever 25, it passes through hinge, be articulated in the housing of described miniature circuit breaker action output device, the one end extends to described housing bore 121 outer (seeing also shown in Figure 5), when described short-circuit detecting lever when described hinge rotates, 25 pairs of described second limit switches 27 of described short-circuit detecting lever produce and trigger, thereby give state detection signal of corresponding little processing (first control signal);
One back-moving spring 26, it places described hinge place, with so that described short-circuit detecting lever reset.
See also shown in Fig. 6 A, it has the schematic perspective view of miniature circuit breaker action output device embodiment one user mode in the miniature circuit breaker of short circuit self-locking function for the present invention; Present embodiment is that described miniature circuit breaker action output device is connected with two miniature circuit breakers 61,62 that are positioned at its both sides respectively, described linkage portion 21 is one to have the connecting rod of conduit, handle portion 22 tops of the handle 611,621 of described miniature circuit breaker and described miniature circuit breaker action output device are located in the described conduit, thereby form interlock.
The connector 32 of described miniature circuit breaker action output device, (33) be by being positioned at the connection chute of described miniature circuit breaker side, with power taking hole corresponding on the circuit board in the miniature circuit breaker or/and get telltale hole and be connected, thereby realize connection.
See also shown in Fig. 6 B, it has the schematic perspective view of miniature circuit breaker action output device embodiment one user mode in the miniature circuit breaker of short circuit self-locking function for the present invention; Be with the difference of the foregoing description one, described linkage portion is a connecting rod 211, handle portion 22 tops of the handle 611,621 of described miniature circuit breaker and described miniature circuit breaker action output device are provided with through hole, and described connecting rod 211 passes described through hole, thereby form interlock.
See also shown in Fig. 6 C, it has the schematic perspective view of miniature circuit breaker action output device embodiment three user modes in the miniature circuit breaker of short circuit self-locking function for the present invention; Be with the difference of the foregoing description one, described miniature circuit breaker action this moment output device does not have handle portion, therefore when described miniature circuit breaker is connected with described miniature circuit breaker action output device, it is described interlock key 211, interlock key on the rotating part of 212 1 ends and described miniature circuit breaker action output device is inserted hole 101 and is combined, the through hole 601 that the other end passes described miniature circuit breaker housing is inserted the hole with the interlock key on the described miniature circuit breaker handle and is combined, thereby the action by rotating part passes to the handle of described miniature circuit breaker with rotation, thereby realizes the operation of appointment.
See also shown in Fig. 6 D, it has in the miniature circuit breaker of short circuit self-locking function structure corresponding in the miniature circuit breaker action output device and Fig. 4 and miniature circuit breaker in conjunction with back cut-away view for the present invention; Described miniature circuit breaker 61 fits together with described miniature circuit breaker action output device, the iron core of the overcurrent release 44 of described miniature circuit breaker and described short-circuit detecting lever 25 lean, when being short-circuited fault, described overcurrent release 44 actions, thereby the described short-circuit detecting lever 25 of pushing tow, thereby described short-circuit detecting lever 25 is rotated around described hinge, thereby trigger described second limit switch, 27 tight first control signals of giving birth to.When described overcurrent release 44 resets, under the effect of described back-moving spring 26, no longer described second limit switch 27 is triggered.
See also shown in Fig. 7 A, it has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram one in the miniature circuit breaker action output device for the present invention; Its main purpose is to control stopping of motor and changes, and realizes unidirectional rotation at the motor described in the application of reality; Wherein, described control unit comprises:
One power-switching circuit, it obtains rectification behind the voltage signal, filtering and step-down from described phase line L and handles, and powering with electrical component for described control unit;
One position detecting circuit when it detects described miniature circuit breaker arrival target location, sends first control signal;
One triggers element, and it obtains described first control signal, triggers described motor and changes or stop.Wherein, described power-switching circuit comprises: a diode D1, and it is in order to obtain rectification (being that described connector directly obtains from the undressed power supply signal of phase line) after the AC signal from miniature circuit breaker from described phase line L; One second capacitor C 1, it is connected with earth terminal with described diode D1, and it is in order to carry out filtering; One dropping resistor R1 is in order to carry out step-down; One voltage-stabiliser tube DW1 is in order to carry out voltage stabilizing.
Described position detecting circuit comprises:
One first limit switch XWK, one end ground connection, and trigger end is by first frizzen triggering of described position detecting mechanism, described triggering element can be relay or triode, present embodiment is example and called after one first triode Q3 with the triode, and its base stage is connected with the described first limit switch XWK, and the other end connects, its grounded emitter, its collector electrode is connected with described motor M.
Also comprise: a delay circuit, it comprises: one first capacitor C 3, the one end links to each other with the base stage of the described first triode Q3, other end ground connection;
One discharge resistance R4, the one end links to each other with the base stage of the described first triode Q3, other end ground connection, promptly be triggered at the described first limit switch XWK, this moment is because the discharge process existence of first capacitor C 3, so the described first triode Q3 still can conducting work a period of time, thereby described miniature circuit breaker can fully be closed a floodgate or disconnect.
Also comprise: an inspection switch JCK, its be that inspection switch 31 on the described housing is corresponding, described inspection switch JCK places between described power-switching circuit and the phase line L, cuts off the supply of electric power of phase line L to power-switching circuit when needs overhaul.
Also comprise: a short circuit latching circuit, it comprises:
One second triode Q2, its grounded emitter, its collector electrode is connected with the described first triode Q3 base stage;
One second limit switch DK, it is connected with the described second triode Q2 base stage, and trigger by second universal driving shaft of described short-circuit detecting mechanism, also comprise: a short circuit indicating circuit, in order to when described miniature circuit breaker place circuit is short-circuited, to indicate, it is a LED, and it is connected with the described second limit switch DK.
See also shown in Fig. 7 B, it has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram two in the miniature circuit breaker action output device for the present invention; The difference of itself and above-mentioned schematic diagram one is, it adopts the mode of little process chip chip MCU to realize the function of control unit, in fact this little process chip MCU and above-mentioned analog circuit belong to equivalence, based on the thought of above-mentioned analog circuit, be easy to those skilled in the art realize.The signal input part of described little process chip MCU also is provided with a temperature acquisition chip IC 1, in order to gather the temperature parameter of relevant position, send signal at time described little process chip MCU that temperature is too high, control described motor M and rotate, thus the action of opening circuit of realization miniature circuit breaker.A plurality of indicator light LEDa, LEDb, LEDc, LEDd also are set, and it is connected respectively at the corresponding output of described little process chip MCU, in order to the indication miniature circuit breaker or the state of miniature circuit breaker action output device.Owing to adopted little process chip MCU, then also comprise a reset button REST, be connected with described little process chip MCU; Also be provided with communicating circuit simultaneously, in order to communicating, thereby realize external control or mutual and transmission corresponding data information with external equipment; Also be provided with memory circuit, in order to storage control program or corresponding status data.。
See also shown in Fig. 7 C, it has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram three in the miniature circuit breaker action output device for the present invention; The difference of itself and above-mentioned schematic diagram one is that described position detecting circuit comprises:
One photoelectrical coupler IC, its output is connected with the control end of the described triggering element first triode Q3;
One sampling electronic circuit, it obtains voltage signal from described phase line L, through rectification, be connected with the input of described photoelectrical coupler IC after filtering and the voltage stabilizing, comprise diode D3 from specific implementation in order to rectification, capacitor C 4 in order to filtering, present embodiment mainly is to be used in the feed motion that described miniature circuit breaker action output device is realized miniature circuit breaker, promptly after described miniature circuit breaker closes a floodgate, described sampling electronic circuit obtains voltage signal, thereby make described photoelectrical coupler IC conducting, and then the described first triode Q3 base stage is electronegative potential, thus described motor M stall.
See also shown in Fig. 7 D, it has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram four in the miniature circuit breaker action output device for the present invention; The difference of itself and above-mentioned schematic diagram two is that described position detecting circuit comprises:
One photoelectrical coupler IC, its output is connected with the control end of the described triggering element first triode Q3;
One sampling electronic circuit, it presses signal from described phase line L power taking, through rectification, be connected with the input of described photoelectrical coupler IC after filtering and the voltage stabilizing, comprise diode D3 from specific implementation in order to rectification, capacitor C 4 in order to filtering, present embodiment mainly is to be used in the feed motion that described miniature circuit breaker action output device is realized miniature circuit breaker, promptly after described miniature circuit breaker closes a floodgate, described sampling electronic circuit obtains voltage signal, thereby make described photoelectricity coupling IC conducting, and then the described first triode Q3 base stage is electronegative potential, thus described motor M stall.
See also shown in Fig. 7 E, it has in the miniature circuit breaker of short circuit self-locking function control unit circuit schematic diagram five in the miniature circuit breaker action output device for the present invention; The difference of itself and above-mentioned schematic diagram one is, has also increased an external control unit (external control signal processing circuit), and it makes described motor action in order to receive external control signal.Described external control unit comprises: one the 3rd triode Q4, and its base stage is obtained outside described external control signal WK, its grounded emitter; One the 4th triode Q1, its base stage is connected with described the 3rd triode Q4 collector electrode, and its emitter is connected with the collector electrode of the described second triode Q4.Initial condition, external control signal WK is a high potential signal, and this moment, described the 3rd triode Q4 was in conducting state, and then whole control to motor M is identical as schematic diagram one; When described external control signal WK is a low-potential signal, this moment, the 3rd triode Q4 was in off-state, and then the first triode Q3 is in off-state, and this moment, motor was in halted state all the time.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (16)
1. miniature circuit breaker with short circuit self-locking function is characterized in that it comprises: one first miniature circuit breaker and miniature circuit breaker action output device, wherein,
Described first miniature circuit breaker is arranged on the described power line, produces the action of opening circuit when being short-circuited fault;
Described miniature circuit breaker action output device comprises: a housing is provided with in described housing:
One motor, it is in order to export a moment of torsion;
One motor unit, it obtains the moment of torsion of described motor output, and is converted to the combined floodgate of described first miniature circuit breaker or opens circuit action;
One control unit, it is controlled the commentaries on classics of described motor and stops;
One short-circuit protection interlock unit; when it opens circuit action at described first miniature circuit breaker because of short trouble produces; give described control unit one actuating signal, make described control unit after described first miniature circuit breaker is short-circuited, described motor be stopped operating.
2. the miniature circuit breaker with short circuit self-locking function according to claim 1 is characterized in that, described motor unit comprises: a rotation section, a clicking section and a STATEMENT OF FEDERALLY SPONSORED, and wherein, described rotation section obtains the moment of torsion of described motor output; Described clicking section is that a driving lever is fixedly arranged on the described rotation section, and described clicking section drives described STATEMENT OF FEDERALLY SPONSORED swing; Described STATEMENT OF FEDERALLY SPONSORED is connected with the actuating mechanism of described first miniature circuit breaker, drives described first miniature circuit breaker and produces feed motion or open circuit action.
3. the miniature circuit breaker with short circuit self-locking function according to claim 1 is characterized in that, described control unit comprises:
One power-switching circuit, it obtains rectification behind the voltage signal, filtering and step-down from described phase line and handles, and is powering with electrical component of described control unit;
One position detecting circuit when it detects described first miniature circuit breaker arrival target location, sends first control signal;
One triggers element, and it obtains described first control signal, triggers described motor and changes or stop.
4. the miniature circuit breaker with short circuit self-locking function according to claim 3 is characterized in that, described position detecting circuit comprises:
One first limit switch, one end ground connection, and by position detecting mechanism triggering;
One microprocessor, it is connected with described first limit switch, exports described first control signal when the described first limit switch state changes; Wherein, described position detecting mechanism comprises:
One first frizzen, its first end are articulated in by a hinge in the housing of described miniature circuit breaker action output device, its second end have one with described hinge extension rod in the same way, and second end places on described first limit switch;
One first deep-slotted chip breaker, it is arranged on the housing of described miniature circuit breaker action output device, and described extension rod stretches out from the housing of described miniature circuit breaker action output device;
One second deep-slotted chip breaker, it is arranged on the described first miniature circuit breaker housing, and described extension rod stretches into and combines in the link gear of described first miniature circuit breaker from described first deep-slotted chip breaker;
Described triggering element is one first triode, and its base stage is connected with the described first limit switch other end, its grounded emitter, and its collector electrode is connected with described motor.
5. the miniature circuit breaker with short circuit self-locking function according to claim 3 is characterized in that, described position detecting circuit comprises:
One first limit switch, one end ground connection, and by position detecting mechanism triggering, wherein, described position detecting mechanism comprises:
One first frizzen, its first end are articulated in by a hinge in the housing of described miniature circuit breaker action output device, its second end have one with described hinge extension rod in the same way, and second end places on described first limit switch;
One first deep-slotted chip breaker, it is arranged on the housing of described miniature circuit breaker action output device, and described extension rod stretches out from the housing of described miniature circuit breaker action output device;
One second deep-slotted chip breaker, it is arranged on the described first miniature circuit breaker housing, and described extension rod stretches into and combines in the link gear of described first miniature circuit breaker from described first deep-slotted chip breaker;
Described triggering element is one first triode, and its base stage is connected with the described first limit switch other end, its grounded emitter, and its collector electrode is connected with described motor.
6. the miniature circuit breaker with short circuit self-locking function according to claim 4 is characterized in that, described short-circuit protection interlock unit comprises:
One second limit switch, one end ground connection, and by short-circuit detecting mechanism triggering;
Described microprocessor, it is connected with described second limit switch, output and keep described first control signal when the described second limit switch state changes; Wherein, described short-circuit detecting mechanism comprises:
One short-circuit detecting lever, it is articulated in the housing of described miniature circuit breaker action output device, and the one end extends to outside the described housing, when described short-circuit detecting lever rotates described second limit switch is produced triggering;
One back-moving spring, it places described hinge place, with so that described short-circuit detecting lever reset.
7. the miniature circuit breaker with short circuit self-locking function according to claim 5 is characterized in that, described short-circuit protection interlock unit comprises:
One second triode, its grounded emitter, its collector electrode is connected with described first transistor base;
One second limit switch, it is connected with described second transistor base, and triggers by a short-circuit detecting mechanism,
Wherein, described short-circuit detecting mechanism comprises: one second universal driving shaft, the one end is fixedly arranged on the short circuit short circuit detection triggering mechanism of at least one described first miniature circuit breaker, described second universal driving shaft stretches out from the described first miniature circuit breaker side slotted eye, insert in the described housing, and place on described second limit switch.
8. according to claim 6 or 7 described miniature circuit breakers with short circuit self-locking function, it is characterized in that, also comprise: a short circuit indicating circuit, in order to when the described first miniature circuit breaker place circuit is short-circuited, to indicate, it is a LED, and it is connected with described second limit switch.
9. the miniature circuit breaker with short circuit self-locking function according to claim 8 is characterized in that, also comprises: a delay circuit, and it comprises: one first electric capacity, the one end links to each other with the base stage of described first triode, other end ground connection;
One discharge resistance, the one end links to each other with the base stage of described first triode, other end ground connection.
One voltage-stabiliser tube is in order to carry out voltage stabilizing.
10. the miniature circuit breaker with short circuit self-locking function according to claim 8, it is characterized in that, also comprise: an inspection switch, it places between described power-switching circuit and the phase line, cuts off the supply of electric power of phase line to power-switching circuit when needs overhaul.
11. the miniature circuit breaker with short circuit self-locking function according to claim 8 is characterized in that, described position detecting circuit comprises:
One photoelectrical coupler, its output is connected with the control end of described triggering element;
One sampling electronic circuit, it obtains voltage signal from described phase line, is connected with the input of described photoelectrical coupler after rectification, filtering and voltage stabilizing.
12. the miniature circuit breaker with short circuit self-locking function according to claim 8 is characterized in that, also comprises: an external control unit, it makes described motor action in order to receive external control signal.
13. the miniature circuit breaker with short circuit self-locking function according to claim 12 is characterized in that, described external control unit comprises:
One the 3rd triode, its base stage obtain outside described external control signal, its grounded emitter;
One the 4th triode, its base stage is connected with described the 3rd transistor collector, and its emitter is connected with the collector electrode of described second triode.
14. the miniature circuit breaker with short circuit self-locking function according to claim 6 is characterized in that, also comprises: a communicating circuit, it is in order to carry out data interaction with external equipment;
One memory circuit is in order to stored program and corresponding data.
15. the miniature circuit breaker with short circuit self-locking function according to claim 6, it is characterized in that, also comprise: a temperature detection chip, it is connected with described microprocessor, exports a triggering signal and give described microprocessor when temperature is higher than a certain threshold value.
16. the miniature circuit breaker with short circuit self-locking function according to claim 8, it is characterized in that, also comprise: one second miniature circuit breaker, described first miniature circuit breaker and second miniature circuit breaker are arranged at the both sides of described miniature circuit breaker action output device respectively, and described STATEMENT OF FEDERALLY SPONSORED combines with the actuating mechanism of described second miniature circuit breaker.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010520199.2A CN102013363B (en) | 2010-10-18 | 2010-10-18 | Miniature circuit breaker with short circuit self-locking function |
| US13/880,357 US9509130B2 (en) | 2010-10-18 | 2010-12-17 | Miniature breaker having short circuit self-locking function and miniature breaker having position state detecting function |
| PCT/CN2010/002074 WO2012051744A1 (en) | 2010-10-18 | 2010-12-17 | Miniature breaker having short circuit self-locking function and miniature breaker having position state detecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010520199.2A CN102013363B (en) | 2010-10-18 | 2010-10-18 | Miniature circuit breaker with short circuit self-locking function |
Publications (2)
| Publication Number | Publication Date |
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| CN102013363A true CN102013363A (en) | 2011-04-13 |
| CN102013363B CN102013363B (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010520199.2A Expired - Fee Related CN102013363B (en) | 2010-10-18 | 2010-10-18 | Miniature circuit breaker with short circuit self-locking function |
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| CN102013363B (en) | 2015-01-28 |
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