CN103681124B

CN103681124B - Closed multipole circuit breaker

Info

Publication number: CN103681124B
Application number: CN201410017646.0A
Authority: CN
Inventors: 杨长河; 刘俊
Original assignee: GUIZHOU ZHENHUA HUALIAN ELECTRONICS CO Ltd
Current assignee: GUIZHOU ZHENHUA HUALIAN ELECTRONICS CO Ltd
Priority date: 2014-01-15
Filing date: 2014-01-15
Publication date: 2017-06-06
Anticipated expiration: 2034-01-15
Also published as: CN103681124A

Abstract

The invention discloses a kind of closed multipole circuit breaker, belong to breaker；A kind of waterproof, explosion-proof, electromagnetism interference are aimed to provide, the breaker of many circuit protections can be implemented.It includes housing, button handle, movement, and movement includes support, drive mechanism, holds motivation structure, switching mechanism and tripping mechanism；Drive mechanism includes magnet coil（22）, be hinged on support（6）On armature（23）, motivation structure is held by being hinged on support（6）On shifting block（2）The crank being hinged with shifting block（5）With crank（5）The contiguous block being hinged（10）Constitute, switching mechanism is by the first binding post（14）, the second binding post（17）With contiguous block（10）The swing arm being hinged（9）, backing pin（21）, torsion spring（36）Constitute, tripping mechanism is by lock shaft（37）, driving lever（24）, locking plate（8）, sliding pin（34）Constitute.The present invention can avoid current surge and misoperation.

Description

Closed multipole circuit breaker

Technical field

The present invention relates to a kind of breaker, more particularly to a kind of closed multipole circuit breaker.

Background technology

Breaker is a kind of Protector for electric appliances with the multiple protection functions such as excessively stream, short circuit, electric leakage, under-voltage, overheat. At present, not only complex structure, performance reliability are poor for most of breakers, and housing is usually the plastic housing of non-tight；It is difficult The need for meet the particular/special requirement such as waterproof and dustproof, explosion-proof, electromagnetism interference.In addition, current breaker can only typically be controlled One break-make of circuit, to implement to protect to multiple circuits, it usually needs combine multiple breakers and be used in combination； It is not only cumbersome, and each breaker synchronization action is difficult to ensure that, therefore easily cause load instantaneous phase shortage.

The content of the invention

In order to overcome defect present in prior art, the present invention is intended to provide a kind of have waterproof, explosion-proof and anti-electricity Multiple circuits can be implemented the closed multipole circuit breaker of protection by magnetic disturbance.

To achieve these goals, the present invention uses following technical scheme：It includes the housing of insulation, is fixed on the housing Bottom is fixed on the button handle and the movement in housing of the case top by its closed base plate, by bearing pin, described Movement includes fixed support and drive mechanism in the housing, and is located on the support and holds motivation structure, switching mechanism and de- Buckle mechanism；The drive mechanism includes being fixed on the magnet coil on base plate, the armature by the 5th hinge on support； It is described hold crank that motivation structure is hinged by the shifting block by the first hinge on support, by the second bearing pin and the shifting block, The contiguous block being hinged by the 6th bearing pin and crank is constituted, and button handle is hinged by trace with shifting block；The switching mechanism is by solid The first binding post being scheduled on base plate and the second binding post, the swing arm being hinged by the 4th bearing pin and contiguous block, through the swing arm On mounting hole and be fixed on the backing pin on support, be fixed on the 4th bearing pin and by swing arm right-hand member compress torsion spring constitute, move Arm is electrically connected with one end of magnet coil, the second binding post is electrically connected with the other end of magnet coil；The tripping mechanism is by setting Lock shaft on crank, the driving lever being fixed in the lock shaft, it is located on the 3rd bearing pin and the locking plate with chute, is located at The sliding pin coordinated on contiguous block and with the chute is constituted.

Movement in housing is multigroup, and the insulating barrier between adjacent movement by being fixed on base plate separates, each movement Shifting block is flexibly connected commonly through a trace with a button handle；There is time-delay mechanism in magnet coil, the time-delay mechanism is by solid The sleeve that is scheduled on base plate, the dynamic iron core being located in the sleeve and spring, the closed fixed core of socket port is constituted；Swing arm Lower section has break-make to indicate alarm switch, and the break-make indicates alarm switch by the first lug plate being fixed on base plate and the second wiring Piece, the compressing tablet being fixed on the second lug plate, positioned at compressing tablet lower section and the conducting strip, the two ends point that are fixed on the second lug plate The arcuate bombing leaf not being fixed on compressing tablet and conducting strip is constituted, and the second lug plate is electrically connected with the second binding post；In housing Surface is fixed with metal-back.

Compared with the prior art, the present invention is by adopting the above-described technical solution, to constituting on the basis of traditional structure The drive mechanism of movement, hold motivation structure, switching mechanism and tripping mechanism and improved, therefore lock relatively reliable, thread off It is all more rapid sensitive with switching.Further, since time-delay mechanism is increased, therefore, it is possible to avoid being disconnected because of immediate current surge The misoperation of circuit, improves the reliability of product；Further, since increased break-make indicates alarm switch, thus it is disconnected when occurring Alarm signal can be sent during road.As a result of closed housing, with waterproof and dustproof, explosion prevention function；Metal-back can be improved Anti-electromagnetic interference capability；Due to being connected with multigroup movement by a trace, therefore can be to multiple using a breaker Circuit implements protection.

Brief description of the drawings：

Fig. 1 is structural representation of the invention；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the rack-mount schematic diagram of armature of the invention；

Fig. 4 be it is of the invention hold motivation structure and swing arm, the schematic diagram that de- mouth mechanism is connected；

Fig. 5 is the schematic diagram that drive mechanism of the invention is connected with switching mechanism；

Fig. 6 is armature schematic diagram of the invention；

Fig. 7 is crank schematic diagram of the invention；

Fig. 8 is contiguous block schematic diagram of the invention；

Fig. 9 is the A direction views in Fig. 4；

Figure 10 is the released state schematic diagram of lock shaft of the invention and locking plate；

Figure 11 is time-delay mechanism schematic diagram of the invention.

In figure：It is button handle 1, shifting block 2, the first bearing pin 3, the second bearing pin 4, crank 5, support 6, the 3rd bearing pin 7, locking plate 8, dynamic Arm 9, contiguous block 10, the 4th bearing pin 11, compressing tablet 12, conducting strip 13, the first binding post 14, the first lug plate 15, arcuate bombing leaf 16th, the second binding post 17, the second lug plate 18, connection sheet 19, sleeve 20, backing pin 21, magnet coil 22, armature 23, driving lever 24, Housing 25, metal-back 26, the 5th bearing pin 27, trace 28, spring 29, dynamic iron core 30, insulating barrier 31, base plate 32, fixed core 33rd, sliding pin 34, the 6th bearing pin 35, torsion spring 36, lock shaft 37, wire 38.

Specific embodiment

The invention will be further described with specific embodiment below in conjunction with the accompanying drawings：

As shown in Fig. 1~11：The housing 25 of insulation is closed by being fixed on the base plate 32 of its bottom, and the top of the housing is fixed There is button handle mounting seat, button handle 1 passes through bearing pin（Do not indicated in figure）It is located in the button handle mounting seat；There is movement in housing 25.Should Movement includes fixed support and drive mechanism in the housing, and is located on the support and holds motivation structure, switching mechanism and de- Buckle mechanism.The drive mechanism by be fixed on base plate 32 magnet coil 22, be hinged on the frame 6 by the 5th bearing pin 27 Armature 23 is constituted, and support 6 is fixed on base plate 32.The motivation structure of holding is hinged shifting block on the frame 6 by by the first bearing pin 3 2nd, the crank 5 being hinged with the shifting block by the second bearing pin 4, the contiguous block 10 being hinged with crank 5 by the 6th bearing pin 35 are constituted, button Handle 1 is hinged by trace 28 with shifting block 2.The switching mechanism by stretching into housing 25 through base plate 32 in the first binding post 14 The swing arm 9 that is hinged with the second binding post 17, by the 4th bearing pin 11 and contiguous block 10, through the mounting hole on the swing arm（In figure Do not indicate）And fixed backing pin 21 on the frame 6, be enclosed within the 4th bearing pin 11 and two ends are separately fixed at contiguous block 10 and dynamic Torsion spring 36 on arm 9 is constituted, and swing arm 9 is electrically connected by wire 38 with one end of magnet coil 22, the second binding post 17 is by connecting Contact pin 19 is electrically connected with the other end of magnet coil 22.The tripping mechanism by be located on crank 5 lock shaft 37, be fixed on this Driving lever 24 in lock shaft, be located on the 3rd bearing pin 7 and the locking plate 8 with chute, be located on contiguous block 10 and with the cunning The sliding pin 34 that groove coordinates is constituted；Locking plate 8 is that edge carries step, the cam structure in question mark shape, lock shaft 37 and locking plate 8 The part of EDGE CONTACT is semicircular structure.

In order to realize implementing short-circuit protection to multiple circuits, the movement in housing 25 is three groups, by solid between adjacent movement The insulating barrier 31 being scheduled on base plate 32 separates, and the shifting block 2 of each movement is commonly through a trace 28 and a button handle 1 It is flexibly connected.

In order to avoid the misoperation because of immediate current surge, time-delay mechanism is provided with each magnet coil 22；The time delay is filled Put dynamic iron core 30 that the sleeve 20 by being fixed on base plate 32 is located in the sleeve and spring 29, determine the port of sleeve 20 is closed Iron core 33 is constituted, equipped with time delay oil in sleeve 20.

In order to send alarm signal in time during generation open circuit, break-make is provided with below the swing arm 9 of each movement and indicates report Alert switch；The break-make indicates alarm switch by the first lug plate 15 being fixed on base plate 32 and the second lug plate 18, is fixed on Compressing tablet 12 on second lug plate 18, positioned at compressing tablet lower section and the conducting strip 13, two ends point that is fixed on the second lug plate 18 The arcuate bombing leaf 16 not being fixed on compressing tablet 12 and conducting strip 13 is constituted, and the second lug plate 18 is electrically connected with the second binding post 17 Connect.

In order to strengthen the ability of electromagnetism interference, metal-back 26 is fixed with the surface of housing 25.

Operation principle：When the electric current for flowing through breaker is less than rated current, the electromagnetic force of magnet coil 22 is less than spring 29 Elastic force, dynamic iron core 30 is maintained at the bottom of time delay pipe 20, and now magnet coil 22 is coreless coil, and produced electromagnetic force is not Adhesive armature 23 is enough to, motivation structure is held and is kept lock-out state, closing of power circuit breaker operation.

When the electric current for flowing through breaker is more than rated current, dynamic iron core 30 is subject to the electromagnetic force of magnet coil 22 slowly to increase Greatly；When overload current reaches setting value, dynamic iron core 30 can quickly to the air gap central motion of magnet coil 22, and and fixed core 33 contacts, now magnet coil 21 is that the electromagnetic force for having core coil, generation is enough to adhesive armature 23 and makes it around the 5th bearing pin 27 Rotate counterclockwise.Then the arc surface of the lower end of armature 23 will drive lock shaft 37 to rotate by driving lever 24, and locking plate 8 realizes solution Lock, swing arm 9 quickly rotates and is rapidly separated with the first binding post 14, open circuit counterclockwise in the presence of torsion spring 36 around the 4th axle 11 Device disconnects and realizes overload protection.When swing arm 9 quickly rotates and is rapidly separated with the first binding post 14 counterclockwise, the He of compressing tablet 12 Conducting strip 13 is also upspring rapidly in the presence of arcuate bombing leaf 16, and conducting strip 13 is disengaged and realized with the first lug plate 15 Short-circuit alarming.

When breaker flows through suddenly larger short circuit current（It is more than 8~12 times of rated current）When, dynamic iron core 30 can produce compared with The big shake such as high current duration is shorter（Below 300ms）, from immediate current surge is judged to, armature plate 23 is or not breaker Can adhesive；As the high current duration is more than 300ms, the move distance of dynamic iron core 30 is excessive, and short circuit current, armature plate are judged to certainly 23 adhesives, breaker disconnects and realizes short-circuit protection.

When one group of movement of breaker disconnects because of overload or short circuit, trace 28 can drive holding for remaining each group movement The action of motivation structure, armature 23, tripping mechanism and switching mechanism, so that multigroup movement synchronously disconnects, reaching prevents phase shortage Purpose.

Claims

1. a kind of housing of closed multipole circuit breaker, including insulation（25）, be fixed on the housing bottom by its closed base plate, The button handle and the movement in housing of the case top are fixed on by bearing pin, the movement includes being fixed on housing In support and drive mechanism, and be located on the support and hold motivation structure, switching mechanism and tripping mechanism；It is characterized in that：

The drive mechanism includes being fixed on base plate（32）On magnet coil（22）, by the 5th bearing pin（27）It is hinged on support （6）On armature（23）；

The motivation structure of holding is by by the first bearing pin（3）It is hinged on support（6）On shifting block（2）, by the second bearing pin（4）With this The crank that shifting block is hinged（5）, by the 6th bearing pin（35）With crank（5）The contiguous block being hinged（10）Constitute, button handle（1）By even Lever（28）With shifting block（2）It is hinged；

The switching mechanism is by being fixed on base plate（32）On the first binding post（14）With the second binding post（17）, by the 4th pin Axle（11）With contiguous block（10）The swing arm being hinged（9）, through the mounting hole on the swing arm be fixed on support（6）On backing pin （21）, be fixed on the 4th bearing pin（11）It is upper and by swing arm（9）The torsion spring that right-hand member is compressed（36）Constitute, swing arm（9）With magnet coil （22）One end electrical connection, the second binding post（17）With magnet coil（22）The other end electrical connection；

The tripping mechanism is by being located at crank（5）On lock shaft（37）, the driving lever that is fixed in the lock shaft（24）, be located at 3rd bearing pin（7）The upper and locking plate with chute（8）, be located at contiguous block（10）Sliding pin that is upper and coordinating with the chute （34）Constitute；

The housing（25）In movement for multigroup, by being fixed on base plate between adjacent movement（32）On insulating barrier（31）Every Open, the shifting block of each movement（2）Commonly through a trace（28）With a button handle（1）It is flexibly connected；

The housing（25）Surface be fixed with metal-back（26）.

2. closed multipole circuit breaker according to claim 1, it is characterised in that：Magnet coil（22）In have time delay Device, the time-delay mechanism is by being fixed on base plate（32）On sleeve（20）, the dynamic iron core that is located in the sleeve（30）And spring （29）, by sleeve（20）The closed fixed core in port（33）Constitute.

3. closed multipole circuit breaker according to claim 1, it is characterised in that：Swing arm（9）Lower section there is break-make to indicate Alarm switch, the break-make indicates alarm switch by being fixed on base plate（32）On the first lug plate（15）With the second lug plate （18）, be fixed on the second lug plate（18）On compressing tablet（12）, positioned at compressing tablet lower section and be fixed on the second lug plate（18）On Conducting strip（13）, two ends be separately fixed at compressing tablet（12）And conducting strip（13）On arcuate bombing leaf（16）Constitute, second connects Line piece（18）With the second binding post（17）Electrical connection.