CN2465316Y - Electromagnetic low-voltage circuit breaker - Google Patents

Abstract

The utility model relates to an electromagnetic hydraulic low-voltage circuit breaker, comprising an insulating casing, two wire connecting terminals arranged in the insulating casing, an electromagnetic system, an operating mechanism and a trip device. The utility model is characterized in that a support frame is additionally provided with a cross arm; a balance piece of an armature iron is provided with a notch, which can prevent inrush current; the support frame is also provided with an adjusting small pin which is upward or downward to lead the armature iron to be rotated to form a definite angle, which can adjust the size of an air gap of the armature iron; the upper part of the insulating casing is provided with a concave seat in which a nut or an integral embedded panel can be arranged; the two wire connecting terminals can be an inserting dialing type, a screw type and a welding type. The low-voltage circuit breaker with the structure has the advantages of more functions, and convenient production, installation, usage and maintenance.

Description

Electromagnetic hydraulic pressure formula low-voltage circuit breaker

The utility model relates to a kind of improvement of low-voltage circuit breaker structure, specifically, is a kind of architecture advances to Chinese utility model patent ZL96229277.X " flush type low-voltage circuit breaker ".

Be used in the low-voltage circuit breaker of doing protection on electric wiring and the equipment, generally all manufacture and design by particular requirement.Resemble Chinese utility model patent " flush type low-voltage circuit breaker " (patent No. 96229277.X, the applying date 960209) and only can embed the assembling use, have limitation for thin plate.And, because of the restriction of structure, can not develop multiple function and purposes and mounting means on demand, added value is not high, and this has just caused the trouble of selecting for use and keeping in repair.Particularly under the situation of information industry develop rapidly, place capacity increases, and requires to settle on printed circuit the welding mounted circuit breaker.Can be fastening when connecting lead with screw, also the available standards sleeve also can be selected difform operating grip or the like for use by different demands.

Though the circuit breaker that Chinese utility model patent " flush type low-voltage circuit breaker " (ZL96229277.X) is made by its scheme is summarized and is got up to have following advantage:

1. adopt modular functional unit device, simple in structure, be convenient to product by different current specification and voltage composition difference in functionality;

2. be elementary cell with the unipolar low-voltage circuit breaker, on operating mechanism, load onto double-arm STATEMENT OF FEDERALLY SPONSORED, can be assembled into product bipolar or three utmost points;

3. integral operation mechanism can be good by the rated current and the tripping characteristic assembling and setting of prior regulation,, jobs or lots production needs single to adapt to;

4. if the turnout definite value and the tripping characteristic that need change to install need only corresponding current coil of transposing and oil damper and ressemble adjustment;

5. the operating state of circuit breaker can reflect by the switching of an auxiliary switch contact;

6. if in the Circuits System two kinds of different electric currents and voltage are arranged, the single-pole circuit breaker with this functional unit can be bolted together, realize single action or interlock.

Yet still sense has many weak points in producing and using:

1. support and armature can not be installed anti-surge current device;

2. the armature air gap is unadjustable, has limited the adjustment of drop-away time;

3. the flush type panel needs seven parts assemblings, the expense of taking a lot of work material, and the flush type panel when not adorning insulation crust present two thin-walled inclined-planes, can't satisfy the requirement that is screwed installation, and easy riveting is split;

4. power supply terminal only is that plug-in is a kind of, can not satisfy the requirement that is welded of fastening needs of screw and printed circuit board (PCB);

5. handle adopts leptoprosopy, can not satisfy modes of operation such as seesaw type;

6. both arms sheet type STATEMENT OF FEDERALLY SPONSORED poor rigidity, yielding influences the multipole circuit breaker interlock;

7. it is little that armature torsion spring profile of tooth hanging feet is regulated counter-force leeway;

8. the tripping mechanism connecting plate can not be adjusted the snap close angle and satisfies the fastener size;

9. conducting system adopts the one chip moving contact, and easily move the center, causes loose contact;

10. moving contact is reliably not spacing, and mechanism forms the dead point, causes tripping;

11. the push rod that the one chip moving contact is plugged easily rotates, and influences the multipole circuit breaker interlock;

12. oil damper adopts welding procedure to seal, because technology does not pass a test the seepage phenomenon is often arranged, influences operating characteristics;

13. the fixed contact inclined-plane makes two contacts promote along the inclined-plane operating physical force is increased, the silver contact wearing and tearing are accelerated;

14. lug plate and coil solder side are too little, thin footpath easily causes coil to open circuit.

Main purpose of the present utility model provides a kind of paired pulses electric current and plays time-lag action, can solve the low-voltage circuit breaker of surge current.

Another purpose of the present utility model provides a kind of low-voltage circuit breaker of scalable armature air gap.

Another purpose of the present utility model provides a kind of have multiple installation and mode of operation, and reliable operation can adapt to different needs, installation, maintenance and low-voltage circuit breaker easy to use.

Technical solution of the present utility model is: a kind of electromagnetic hydraulic pressure formula low-voltage circuit breaker, comprise insulation crust, place two binding posts of its inside, the electromagnetic system of forming by oil damper, coil, armature and support, be used to switch the operating mechanism of dynamic and static contact and the trip gear of loop protection by what toggle mechanism was formed, it is characterized in that described support increases transverse arm so that flying wheel to be installed, and has breach on the armature balance element so that crank Xiao of flying wheel embeds wherein;

Described support is provided with the adjusting bound feet, and this bound feet makes armature rotate to an angle up or down, and armature reverses torsion spring angular adjustment counter-force by the hexagonal regulating part;

Described insulation crust is provided with boss and pit, in order to many plates of rotary shaft STATEMENT OF FEDERALLY SPONSORED to be installed, also is provided with dimple on it, is used for device nut or whole embedded panel; These two binding posts can be plug-in, screw-type and welding mounted; Sensitive switch places in this insulation crust and is directly switched to transmit the on off operating mode of circuit breaker by the reed-type lever; The handle stage casing is a wide formula; Described whole embedded panel has a stay hook can hook the edge of insulation crust dimple securely, and the elastic supporting member for supporting optical member of panel can prop up the apparatus mounting plate of perforate again firmly;

Toggle mechanism is made up of tripping, whole snap close and connecting plate, and this connecting plate is an open type, and a scalable keeper is arranged on it; Described moving contact is double-arm U type structure and is provided with transverse arm; Described oil damper adopts between the damper tube after the O RunddichtringO places pole shoe and anti-limit, its interior cored, stage clip, damping fluid; Described fixed contact is the flat square structure; Lug plate is the longthening belt breach.

The utility model has the advantages that:

1. the support transverse arm is installed the flying wheel device, has the effect that prevents surge current;

2. support increases adjusting bound feet scalable armature size of gaps;

3. use the multipole STATEMENT OF FEDERALLY SPONSORED of rotary shaft, the intensity height is out of shape for a short time, and assembly unit is convenient;

4. because insulation crust is provided with the dimple that can place square nut, so except installing for screw, it is embedded also can to use the setting-in panel to make;

5. integral type setting-in panel can directly be installed, and is more convenient;

6. binding post has plug-in, screw-type and welding mounted, and is easy to use;

7. auxiliary switch adopts the reed-type lever directly to drive switching by operating mechanism;

8. wide formula short handle using the band groove enlarged the scope of application so that ship type rocker-type and cover shank type lever actuator to be installed;

9. open type connecting plate scalable snap close size;

10.U the type moving contact can make dynamic and static contact parallel sliding and contact reliably, and can improve capacity at the afterbody welding lead;

11. adopt the hydraulic oil damper of the cold process manufacturing of O type circle sealing to solve seepage oil, functional reliability is guaranteed;

12. fixed contact changes planar structure into by ramp structure, reaches the purpose that cleans contact-making surface equally by inclined-plane gravity friction becoming planar slide friction, has reduced the wearing and tearing of silver contact, feel is level and smooth during operation;

13. lug plate changes the longthening belt breach into, can adapt to the usefulness of the welding of big or small electric current.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the structural representation of existing device.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the printed board of the present utility model pin schematic diagram that is welded.

Fig. 4 is a torsion spring hexagonal regulating part schematic diagram of the present utility model.

Fig. 5 is a rotary shaft STATEMENT OF FEDERALLY SPONSORED schematic diagram of the present utility model.

Fig. 6 is a whole snap close schematic diagram of the present utility model.

Fig. 7 is a supporting structure schematic diagram of the present utility model.

Fig. 8 is a band breach armature schematic diagram of the present utility model.

Fig. 9 is a U type moving contact schematic diagram of the present utility model.

Figure 10 is the toggle structural representation of adjusting of the present utility model.

Figure 11 is a sealing oil damper structure schematic diagram of the present utility model.

Figure 12 is a whole flush type panel schematic diagram of the present utility model.

Figure 13 is a flying wheel structural representation of the present utility model.

Figure 14 is a screw leg schematic diagram of the present utility model.

Figure 15 is a square nut schematic diagram of the present utility model.

Figure 16 is inertia wheel shaft Xiao schematic diagram of the present utility model.

Figure 17 is a band breach lug plate schematic diagram of the present utility model.

As shown in Figure 2, the utility model adopts insulation crust 1, by the basic function part that two mirror image faces are formed, and the chamber is installed with the operating system of being made up of handle 2, toggle mechanism 8 within it; Insert the magnetic system that location hole 53 backs are formed with elasticity trim ring 19 fixing backs on the support 17 by armature 23, support 17 and the coil 20 of going here and there; The magnetic system that armature 23, oil damper 18 are formed; The conducting system of forming by power supply terminal 12, moving contact 11, flexible conductor 59, coil 20, load wiring terminal 14.These three set of systems are synthesized complete single-stage pattern blocking basic functional units.

In the square dimple 6 of insulation crust 1, place as Figure 15 square nut 7, then circuit breaker just can fixedly mount with mounting plate 57 usefulness screws 5; If do not place square nut 7, and device embedded panel 44, then under the ejection of rivet 56, hook the edge of square dimple 6 securely as the stay hook 46 in Figure 12 setting-in panel, the elastic supporting member for supporting optical member 45 that utilizes panel 44 just the mounting panel 57 of setting-in perforate in advance easily ', this moment, venthole 48 did not influence exhaust just below elastic supporting member for supporting optical member 45.

Operation principle of the present utility model specifically describes as follows:

Circuit breaker will enter on-state, the handle 2 that at first is contained on the support 17 centers on axle Xiao 3 by turning clockwise 60 °, meanwhile axle Xiao 3 on the handle reduces torsion spring 4 torsional angles on the one hand, and tripping 29 in Figure 10 toggle mechanism 8 that links to each other done rotary displacement downwards, playing switching force is delivered on the moving contact 11 by rivet 56 by toggle mechanism 8, contact with power supply terminal 12 until moving contact 11 and to reach the regulation excess of stroke, the pressing plate 16 that is promoted on the sensitive switch 13 by moving contact 11 makes sensitive switch 13 switchings, signal output simultaneously, and circuit is just connected.Otherwise handle 2 is by being rotated counterclockwise 60 °, and above-mentioned part is made reverse motions, and circuit breaker is disjunction just, and circuit just disconnects.If circuit has overload, electric current on that coil 20 just increases, when electric current rises to setting, the counter-force that iron core 66 under the effect of coil magnetic field intensity in the oil damper 18 of Figure 11 will overcome stage clip 64 slowly moves to pole shoe 22 directions under the resistance of damping fluid 65, electric current is big more, translational speed is fast more, and the time that arrives pole shoe 22 is just short more, Here it is anti-time limit characteristic.When iron core 66 during near pole shoe 22, the suction of magnetic system heightens.When enough making armature 23 inhale to pole shoe 22, the counter-force that armature 23 will overcome Fig. 4 torsion spring bayonet socket 40 has been rotated counterclockwise push rod 28 around axle Xiao 21 makes swing cylinder 43 works in Fig. 6 snap close 30 counterclockwise, when rotating to the semiaxis groove 42 of snap close 30, tripping 29 can't fasten and slide fastener, 8 one-tenth bendings of toggle mechanism, and moving contact 11 is rotated counterclockwise rapidly under the effect of counter-force torsion spring 15, so that work when connecting next time.And when circuit was short-circuited suddenly, oil damper 18 had little time reaction at all, and by powerful magnetic field intensity armature 23 was directly inhaled to pole shoe 22, and circuit breaker is disconnected fast.

Solution of the present utility model can make circuit breaker parameters obtain to adjust and can obtain following function:

When circuit exist surge current and otherwise when making the circuit breaker misoperation, then transverse arm 24 usefulness Figure 16 rivets 51 of Fig. 7 support 17 pass the installing hole 24 of Figure 13 flying wheel 47 ' with the movable riveted of support 17 usefulness rivet head 52 works, flying wheel 47 can be rotated freely.And in the breach 27 of the balance element 26 of crank Xiao 27 on the flying wheel 47 ' be installed on Fig. 8 armature 23, magnetic field intensity increases suddenly when surge current occurs suddenly, and armature 23 end faces are attracted in the past by pole shoe 22 rapidly.At this moment, because flying wheel 47 is housed, armature 23 will be made rapid circular movement, must be earlier with crank Xiao 27 in the breach 27 of balance element 26 ' promotion, be rotated counterclockwise, because flying wheel 47 has certain mass, can not move at once, when promoting flying wheel 47 rotations through certain hour, the surge current of this moment is also pass by, and descend rapidly, so armature 23 not action as yet, circuit breaker is not disjunction also.But when overload current, armature 23 and the same deferred action at ordinary times, the influence that not existed by flying wheel 47 plays a protective role in the same old way.

2. regulate outside the viscosity of allotment damping fluid 65 in not only available Figure 11 oil damper 18 of circuit breaker tripping time, also the air gap between pole shoe 22 and the armature 23 in the available adjustment magnetic system.And Fig. 8 armature 23 is around axle Xiao 21 rotations, and the lower edge of its balance element 26 is stopped on the adjusting bound feet 25 of Fig. 7 support 17.Thereby just can make armature face near pole shoe 22 reduce air gaps as long as bound feet 25 pulled up, drop-away time shortens, otherwise bound feet 25 is pulled air gap down and just increased, and drop-away time extends.In addition, also can use the torsion spring bayonet socket 40 in Fig. 4 hexagonal regulating part 39 to be rotated counterclockwise, torsion spring 4 is tightened to increase the counter-force of armature 23, increase drop-away time, otherwise, drop-away time then shortened.

3. if blade inserting binding post 12 and 14 need be changed into the welding mounted pin 41 of Fig. 3 or the screw 50 of Figure 14 is fixed on the lug plate 49 and can changes easily before assembling.Simultaneously, be reserved with groove 35 in the lower end of insulation crust 1, three or four binding posts of other attaching line terminals formation are for the usefulness of special protection as required.When electric resistance welding can not be adopted during less than φ 0.1 in the line of coil 20 footpath, the lug plate 34 that it can be by band breach 54 was firm and do not break with soldering around last several circles back thereon.

4. when needs are known the circuit breaker working condition, sensitive switch 13 can be set on Fig. 2 lug 33, when doing to close a floodgate action, moving contact 11 directly force pressing plate 16 down to move, the normal opened contact closure of sensitive switch 13, closing contact opens, finish switching, be connected to the state that is switched on or switched off that audible-visual annunciator is just known circuit breaker by corresponding line on the lug plate 34, this is more more reliable than force sensitive switch 13 to switch indirectly by rotary pressure plate.

5. when the tripping in Figure 10 toggle mechanism 8 29 very easily causes tripping 29 to skid with the fastener of snap close 30 is undersized, three fixed positioning parts on the connecting plate 36 31 is pulled open certain value outwardly, swing cylinder 43 (Fig. 6) in the snap close 30 just makes semiaxis groove 42 certain angle that turns clockwise, to reach the purpose that increases the fastener size, tripping 29 is no longer skidded.

6. single-pole circuit breaker need be formed multipole circuit breaker, when being in on-state again, placing Fig. 5 rotary shaft STATEMENT OF FEDERALLY SPONSORED 68 in the STATEMENT OF FEDERALLY SPONSORED mounting groove 61 of Fig. 7 support 17 makes its projection 70 and the transverse arm 37 of Fig. 9 moving contact 11 be in not contact condition, and other end push rod 69 is near support 17 inwalls, between armature 23 and push rod 28.When the circuit breaker disjunction, moving contact 11 upwards is rotated counterclockwise, and the projection 70 that makes its transverse arm 37 push down STATEMENT OF FEDERALLY SPONSORED 68 turns clockwise, and the other end push rod 69 of STATEMENT OF FEDERALLY SPONSORED also turns clockwise also the push rod 28 of armature 23 to be backed down and is rotated counterclockwise at this moment.Simultaneously, the swing cylinder 43 that push rod 28 promotes snap close 30 among Fig. 6 is rotated counterclockwise, and operating mechanism is off-state.Because having an inserts to make rigidity between the STATEMENT OF FEDERALLY SPONSORED 68 of multipole circuit breaker links, therefore as long as a STATEMENT OF FEDERALLY SPONSORED rotation will make the another STATEMENT OF FEDERALLY SPONSORED rotatablely move synchronously, so a circuit breaker is when the disjunction state, because the effect another circuit breaker of mechanical chain also is in identical operating state, guaranteed the synchronization dependability of work.

Claims (9)

1. electromagnetic hydraulic pressure formula low-voltage circuit breaker; comprise insulation crust; place two binding posts of its inside; the electromagnetic system of forming by oil damper, coil, armature and support; be used to switch the operating mechanism of dynamic and static contact and the trip gear of loop protection by what toggle mechanism was formed; it is characterized in that described support increases transverse arm so that flying wheel to be installed, and has breach on the armature balance element so that crank Xiao of flying wheel embeds wherein.

2. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 1 is characterized in that described support is provided with the adjusting bound feet, and this bound feet makes armature rotate to an angle up or down, and armature reverses torsion spring angular adjustment counter-force by the hexagonal regulating part; The rotary shaft STATEMENT OF FEDERALLY SPONSORED is installed when also being provided with the STATEMENT OF FEDERALLY SPONSORED mounting groove on it and being used for the assembly unit multipole circuit breaker.

3. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 2 is characterized in that described insulation crust is provided with boss and pit, in order to many plates of rotary shaft STATEMENT OF FEDERALLY SPONSORED to be installed, also is provided with dimple on it, is used for device nut or whole embedded panel; These two binding posts can be plug-in, screw-type and welding mounted; Sensitive switch places in this insulation crust and is directly switched to transmit the on off operating mode of circuit breaker by the reed-type lever; The handle stage casing is a wide formula.

4. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 3, it is characterized in that described whole embedded panel has a stay hook can hook the edge of insulation crust dimple securely, the elastic supporting member for supporting optical member of panel can prop up the apparatus mounting plate of perforate again firmly.

5. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 4 is characterized in that toggle mechanism is made up of tripping, whole snap close and connecting plate, and this connecting plate is an open type, and a scalable keeper is arranged on it.

6. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 5 is characterized in that described moving contact is double-arm U type structure and is provided with transverse arm.

7. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 6 is characterized in that described oil damper adopts between the damper tube after the O RunddichtringO places pole shoe and anti-limit, its interior cored, stage clip, damping fluid.

8. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 7 is characterized in that described fixed contact is the flat square structure.

9. electromagnetic hydraulic pressure formula low-voltage circuit breaker according to claim 8 is characterized in that lug plate is the longthening belt breach.

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