CN206322653U - The external breaker of electric energy meter - Google Patents

Abstract

The utility model discloses a kind of external breaker of electric energy meter, including housing, electricity behaviour module, circuit breaker multiple levels, opening/closing operation mechanism, motor, reducing gear, clutch and combined floodgate axle, electricity behaviour's module is provided with switching push button, switching push button can move in neck and contact or separate with microswitch, it also includes transparent latch fitting, transparent latch fitting one end is articulated with the housing of electricity behaviour's module, and the other end is buckled in electricity behaviour's module and coats switching push button；Switching push button includes elastic plate and pressing plate, and the top surface of elastic plate is provided with stirring joint, being provided with extruding boss sideways, and the top surface for stirring joint is not higher than the top surface of neck, and neck inwall is provided with restriction protrusion；Clutch includes driving gear and driven gear, spring is provided between driven gear and housing, the axle center of driven gear is fixed in combined floodgate axle one end, and the other end is connected with circuit breaker handle, reduction gearing is provided with projection, and separating brake lever is promoted by projection drives circuit breaker trip bar motion to realize separating brake.

Description

The external breaker of electric energy meter

Technical field

The utility model is related to a kind of breaker, more particularly to a kind of external breaker of electric energy meter.

Background technology

At present, State Grid Corporation of China, Southern Power Grid Company is solve to take the demand for control for controlling electric energy meter, and release is a to be had The breaker of remote auto divide-shut brake, the breaker can be according to except the short circuit with conventional circuit breaker, in addition to overload protection function, also The on/off switch order issued according to main website, breaker performs the function of corresponding on/off switch action, and this function is embodied in, closed a floodgate Afterwards, breaker still can be with semi-automatic combined floodgate, sub-switching operation.Inventor's research finds that breaker has following a few sides in the market Planar defect：

Firstth, on/off switch control uses DC motor Driver mostly, is carried out by Worm Wheel System pair, gear driving pair Slow down, because worm and gear has reverse self-locking performance, if met in making process have a power failure, power down failure, now breaker hand Handle is in stuck state.Breaker dynamic/static contact is in non-electrical security isolation distance and position, is now caused to send a telegram here next time Major safety risks.The semi-automatic on/off switch function of the permission after remote switching is realized at present in addition, it is mostly complete using drive gear Into after feed motion, the force part of drive gear is again by rotating backward, away from handle stress point, the side for departing from power There is following defect in formula, this road mode：1st, control logic is more complicated；2nd, due to completing an instruction, it is necessary to which motor is carried out frequently Rotating, reduce motor reliability, can seriously cause burn-down of electric motor, lead to electrical fire accident；If the 3, occurring position inspection When dendrometry is imitated, can occur stall between gear, in the case of unattended, stall can cause whole product failure, cause motor Burn.And provide to require that breaker is in gate-dividing state in subscriber arrearage, and switch semi-automatic closed procedure handle inner Contact remains in open position.And many complex structures of product that this function can be met in the market and reliability is not high.

Secondth, the switching push button of the external breaker of electric energy meter is directly arranged at switch front, but presence is not required to open Door of meter casing can implementation pattern switch switching defect.The change that user carries out default conditions easily can cause both sides shadow Ring.First can increase because semiautomatic-mode switch does not have automatic switching-in function, if switched in automatic occasion semi-automatic by mistake In the case of occasion, cause grid company can not carry out effective monitoring to power transmission state, increase the workload of grid company.Second The semi-automatic occasion of body switches to full-automatic occasion, and it is the occasion that row throws electricity automatically when being not suitable for illustrate working environment, is now such as opened Automatic closing is closed, potential electrically electric shock accidents can be caused.Other switching push button, status indicator lamp are directly placed in without isolation , without effective electrical isolation, there is the problem of EMC index is low in breaker front.

3rd, current breaker on control circuit board by directly installing toggle switch, and makes switch head direct Stretch out shell type.User easily touches toggle switch by mistake in use causes breaker switching operation modes.If behaviour Operation mode switches to semi-automatic by mistake from automatically, and grid company can be caused can not to carry out effective monitoring to power transmission state, increase power network The workload of company.If operating environment requirements semi-automatic operation itself, and full-automatic occasion is switched to by mistake, illustrate working environment Row throws the occasion of electricity automatically during to be not suitable for, now such as switch automatic closing, can cause potential electrically electric shock accidents.While by Near away from case surface in wiring board, electric clearance, creep age distance are small, and to breaker operator, person brings potential safety hazard.

Utility model content

The purpose of this utility model is to provide the semi-automatic divide-shut brake of energy after a kind of automatic closing, and ensures that motor is same all the time To driving, reliability and stability are improved, while can avoid the user misoperation from needing that using instrument pattern switching could be carried out The external breaker of electric energy meter.

The external breaker of this electric energy meter that the utility model is provided, including housing, electricity are grasped module, circuit breaker multiple levels and divided Switch-on operating mechanism, electricity behaviour's module be provided with by operator scheme switch to the switching of long-range semi-automatic or long-range fully automatic mode by Button, switching push button is installed in the neck on housing, and microswitch is connected on the pcb board below neck, and switching push button can In neck motion contact or separates with microswitch opening/closing operation mechanism is switched to it is long-range automatically or remotely semi-automatic Operation, it also includes preventing the transparent latch fitting of user misoperation, and one end of transparent latch fitting is articulated with the housing of electricity behaviour's module, separately One end is buckled in electricity behaviour's module and coats switching push button；The switching push button includes elastic plate and is connected to the pressing plate of its underpart, The top surface of elastic plate is provided with stirring joint, being provided with extruding boss sideways, and the top surface for stirring joint is not higher than the top surface of neck, described The inwall of neck is provided with restriction protrusion, and stirring joint using instrument promotion makes switching push button be moved toward or away from microswitch, Implementation pattern switches；The opening/closing operation mechanism include be connected to the motor being sequentially arranged on housing, reducing gear, from Mechanism and combined floodgate axle are closed, clutch includes coaxially arranged driving gear and driven gear, set between driven gear and housing Having makes driven gear engage the spring being integrated with driving gear, and the axle center of driven gear is fixed in one end of combined floodgate axle, another The handle stretched into through spring in housing with each pole breaker is held to be connected, motor driving driven gear rotarily drives combined floodgate axle Rotation, which is realized, closes a floodgate, and reducing gear includes multi-stage speed-reducing gear, and one reduction gearing, which is provided with, promotes the convex of separating brake lever rotation Rise, separating brake lever is installed on housing by connecting pole, one end of separating brake lever rotated by projection promotion around connecting pole make it is another End drives circuit breaker trip bar motion to realize separating brake.

For the ease of transmission, it is duplicate gear to make the driving gear, and duplicate gear includes large and small two gear rings, canine tooth Enclose as radial direction wheel rim, small gear ring is axial gear ring, the driven gear is can mutually nibble with the small gear ring of the driving gear The tooth section of the face gear of conjunction, the tooth section of face gear and axial gear ring is isosceles triangle；The wheel hub of driven gear Two ends are stretched out outside face of gear, and one end is that the ladder boss that is connected with the driving gear, the other end are connector, connector Axial centre is provided with the connecting hole for being used for connecting the combined floodgate axle, and the connection head end of driven gear, which is provided with, to be used to place the spring Annular groove, the internal diameter of annular groove is matched with the internal diameter of spring, and the external diameter of annular groove is matched with the external diameter of spring.

In order to improve the convenience of installation and the reliability of motion, the housing is set to include drain pan and upper lid, drain pan inwall The axial center position of the correspondence driving gear is provided with the gathering sill for being matched with the ladder boss, and upper lid inwall correspondence is described Being provided with connector position is used to pacify spring-loaded locating dowel, and the correspondence separating brake lever both sides are provided with restriction protrusion, the card Groove is located on the roof of upper lid.

In order to which the moment of torsion for ensureing output meets use requirement, it is gear pair to make the reducing gear, including engage successively Worm screw is coaxially connected with primary speed-down gear, double-reduction gear and three-level reduction gearing, the output shaft of the motor, Primary speed-down gear and worm engaging, three-level reduction gearing are engaged with the driving gear, and double-reduction gear and three-level are slowed down Gear, which is on the duplicate gear that two gear rings are straight-tooth, double-reduction gear, to be provided with for providing dynamic to the separating brake lever The projection of power.

For the ease of connecting and positioning, it is square shaft to make the combined floodgate axle；Connecting hole is the square hole for being matched with the combined floodgate axle.

It is cost-effective while in order to ensure that locking is reliable, make the single piece that the transparent latch fitting is L-type, including two L-types Linking arm and between two linking arms similar shape latch plate, linking arm one end stretched out outside the latch plate, the other end with Latch plate is concordant, and hinge hole is provided with the position outside linking arm blocking plate, and the other end is provided with inwardly projecting positioning boss, Transparent latch fitting is by the hinge through hinge hole on the housing.

For the convenience for improving the reliability of locking and opening, the correspondence positioning boss position in the electricity behaviour module Put place and be provided with corresponding C-shaped channel, the upper cell wall of C-shaped channel is that acute angle, lower cell wall are side relative with hinge side in obtuse angle, latch plate Gap is provided with edge, gap is located at latch plate width center.

Preferably, make the L-type that is shaped as of the switching push button, the elastic plate, pressing plate, joint and extruding boss are stirred For the silica gel button of single injection-molded, groove face of the switching push button with elastic plate parallel to neck is arranged.

In order to ensure the reliability of deformation, the elastic plate is rectangular slab, is disposed with deformation groove along its length thereon, its Width is vertical with the direction of motion of switching push button, and deformation groove is the rectangle square hole in penetration thickness direction, and deformation groove is related to Be arranged symmetrically two of the elastic plate width median plane, the joint of stirring is cylindrical type boss, and its top surface is offered The link slot parallel with the elastic plate width, the width median plane of the link slot and the axle for stirring joint Coplanar to median plane, the extruding boss is semicircle boss, is related to the elastic plate width median plane and is arranged symmetrically Two；The restriction protrusion is related to two that neck width median plane is arranged symmetrically.

In order to increase the connected mode with external tool, make to be provided with the link slot with stirring joint longitudinal center line altogether Blind hole.

The utility model is during routine use, and transparent latch fitting makes the switching push button of electricity behaviour's module be in closed state, Need need to open after transparent latch fitting and could perform during semi-automatic or full-automatic different mode switching, it is to avoid user grasps by mistake Make, prevent electrical hazard.Open and also need to be connected with stirring joint by corresponding instrument after transparent latch fitting, recycle work Tool control stirs joint and drives switching push button motion.Switching push button is moved towards microswitch during positive movement, in motion process Extrude boss and acted on inside elasticity of compression plate by restriction protrusion, elastic plate compressive deformation makes extruding boss by restriction protrusion, lead to Later pressing plate is contacted with microswitch, and microswitch normally opened contact conducting, normally-closed contact disconnects, the switching of implementation pattern, simultaneously By extruding boss after restriction protrusion not in elasticity of compression plate, elastic plate recovers spacing.Positive movement rear fender and microswitch Depart from, microswitch normally opened contact disconnects, normally-closed contact closure, the switching of implementation pattern.The utility model needs pattern switching It could be operated after joint is connected by corresponding instrument with that must be stirred, effectively avoid the possibility of maloperation, simultaneously will Elastic plate and pressing plate are arranged in Different Plane, increase electric clearance to improve security performance.Carry out driving electricity during remote switching The angular speed of machine output is transferred to clutch after slowing down through reducing gear, clutch rotarily drives combined floodgate axle and rotates realization conjunction Lock, clutch is made up of a pair of intermeshing face gears, and the clutch gear group acts on driven tooth by a cylindrical spring Stress surface is taken turns, realization intermeshes, when closing operation power stall or during more than unexpected torsion, driven gear compression spring makes it Depart from driving gear, the semi-automatic combined floodgate after closing a floodgate can be realized, whole device can also be realized in abnormal cases and impacted Protection, and motor drives in the same direction all the time during use, improves reliability and stability.Separating brake during breaker open operation One end of lever is rotated by projection promotion around connecting pole makes the other end drive circuit breaker trip bar motion that separating brake, separating brake can be achieved Motor stop motion afterwards, makes the release lever of breaker be maintained at trip positions, realizes that the dropout of breaker is kept, is now Make it is semi-automatic pull operation handle, the dynamic and static contact of breaker maintains safe isolation distance still in trip positions.

Brief description of the drawings

Fig. 1 is the axle side schematic diagram of one preferred embodiment of the utility model.

Fig. 2 takes away the axle side schematic diagram after drain pan for Fig. 1.

Fig. 3 is that big schematic diagram is amplified in the blast of closing device in Fig. 1.

Fig. 4 is the assembling schematic cross-sectional view of clutch, housing and combined floodgate axle in Fig. 2.

Fig. 5 is the axle side enlarged diagram of driving gear in Fig. 2.

Fig. 6 is the axle side enlarged diagram of driven gear in Fig. 2.

Fig. 7 is separating brake lever, the connection diagram of circuit breaker trip bar and upper lid in Fig. 2.

Fig. 8 is the axle side enlarged diagram of separating brake lever in Fig. 2.

Fig. 9 is the axle side enlarged diagram of transparent latch fitting in Fig. 1.

Figure 10 is the assembling elevational schematic view of switching push button and housing in Fig. 1.

Figure 11 is the assembling schematic front view of switching push button and housing in Fig. 1.

Figure 12 is the axle side enlarged diagram of switching push button in Fig. 1.

Figure 13 is this preferred embodiment use state schematic diagram.

Illustrate sequence number：

1-housing, 2-motor, 3-reducing gear, 4-clutch, 5-combined floodgate axle, 6-spring, 7-separating brake Lever, 8-circuit breaker trip bar, 31-primary speed-down gear, 32-double-reduction gear, 33-three-level reduction gearing, 41- Driving gear, 42-driven gear, 71-axle sleeve, 72-force side, 73-force side, 121-restriction protrusion, 122-it is spacing Boss, 321-projection, 421-ladder boss, 422-connector, A-breaker module, B-electricity behaviour module, D-transparent lock Part, E-switching push button, F-microswitch, G-pcb board, H-take control electricity box, B1-restriction protrusion, D1-linking arm, D2- Latch plate, D3-positioning boss, E1-elastic plate, E2-pressing plate, E3-stir joint, E4-extruding boss.

Embodiment

As shown in Fig. 1-12, the present embodiment provides this external breaker of electric energy meter, including housing 1, motor 2, subtracts Fast mechanism 3, clutch 4, combined floodgate axle 5, spring 6, separating brake lever 7,8-circuit breaker trip bar, breaker module A, electricity behaviour's mould Block B, transparent latch fitting D, switching push button E, microswitch F, pcb board G.

Housing 1 includes drain pan 11 and upper lid 12, and drain pan inwall is provided with the gathering sill for being matched with slave gear hub, upper lid Wall, which is provided with, to be used to pacify spring-loaded locating dowel, and the upper top surface of lid 12 is provided with the neck for being used for installing switching push button, and the inwall of neck is set There is the positive stop lug boss 122 being additionally provided with the restriction protrusion 121 of a pair of convexes, upper lid 12 for limiting separating brake throw of lever.

Reducing gear 3 is set to gear pair to ensure that Output speed meets the requirement used, and reducing gear 3 is included successively Primary speed-down gear 31, double-reduction gear 32 and the three-level reduction gearing 33 of engagement, primary speed-down gear and the driving electricity The output shaft engagement of machine, three-level reducing gear engages with the driving gear, double-reduction gear and three-level reduction gearing is all provided with Duplicate gear is calculated as, in order to adjust speed reducing ratio.It is provided with double-reduction gear for providing the convex of power to separating brake lever Post 321.

Clutch 4 includes coaxially arranged driving gear 41 and driven gear 42, and the axial centre of driven gear is provided with It is matched with the square hole of combined floodgate axle.Spring 6 is provided between driven gear and housing.Driven gear is fixed in one end of combined floodgate axle 5 Axle center, the handle that the other end is stretched into upper lid with each pole breaker through spring is connected.Driving gear is large and small two gear ring groups Into duplicate gear, bull gear is straight-tooth, and small gear ring is end-tooth, and driven gear is can be with the intermeshing end face of small gear ring Gear, the wheel hub two ends of driven gear are stretched out outside face of gear, one end be connected with the driving gear ladder boss 421, The other end is connector 422, and the axial centre of connector is the square hole of connection combined floodgate axle, and the connection end of driven gear is additionally provided with use In the annular groove for placing spring, the internal diameter of annular groove is matched with the internal diameter of spring, and the external diameter of annular groove is matched with the external diameter of spring, It is stable with the movement locus for ensureing driven gear, it is ensured that the reliability engaged after clutch separation.The tooth section of face gear Isosceles triangle is designed as, to ensure that driven gear can be slided on the surface of driving gear.Combined floodgate axle is set to square shaft simultaneously, with The situation in place for being easy to the handle of each pole breaker to connect and be easy to control to close a floodgate.

Separating brake lever 7 includes axle sleeve 71 and the force side 72 and force side 73 that are attached in herringbone, force side with Force side is not located in sustained height plane, and slotted hole is provided with force side, and separating brake lever is connected to the electricity with its axle sleeve and grasped In module, the slotted hole of force side is placed on circuit breaker trip bar 8, to ensure the reliability of separating brake, while in electricity behaviour's module Shell is provided with two positive stop lug boss, and separating brake lever is located between two positive stop lug boss, in order to the installation and limitation of separating brake lever The rotational angle of separating brake lever.

Transparent latch fitting D is the single piece of L-type, includes the linking arm D1 and L-type that two linking arms are connected as a single entity of a pair of L-types Latch plate D2.Linking arm one end is stretched out outside latch plate, and the other end is concordant with latch plate, and linking arm correspondence is stretched out outside latch plate Hinge hole is provided with position, concordant end is provided with inwardly projecting positioning boss D3, behaviour's module at correspondence positioning boss position Provided with corresponding C-shaped channel.One end of transparent latch fitting is by the hinge through hinge hole in electricity behaviour's module, and the other end is with fixed Position boss is buckled into C-shaped channel, it is to avoid maloperation occurs in user, prevents the generation of electrical hazard.And in latch plate and hinge side Relative edge is provided with gap, and in order to which staff's opening carrys out switching control pattern, gap is arranged at into latch plate width Direction center position further improves the convenience of operation.

Open after transparent latch fitting, in addition it is also necessary to which pattern switching can just be carried out by controlling switching push button to move.Switching push button E is installed on In neck in electricity behaviour's module, microswitch F is connected on the pcb board G below neck, and switching push button can be moved in neck Contact or separate with microswitch.

Switching push button E be by silica gel injection moulding L-type single piece, including elastic plate E1, pressing plate E2, stir joint E3 and Boss E4 is extruded, elastic plate is mutually perpendicular to pressing plate, stir joint and be located at the top surface of elastic plate, extruding boss positioned at elastic plate Sideways.Elastic plate is rectangular slab, is disposed with a pair of deformation grooves along its length thereon, and deformation groove is rectangle square hole, a pair of deformations Groove is arranged symmetrically on elastic plate width median plane.

Joint E3 is stirred for cylindrical type boss, its top surface offers the link slot parallel with elastic plate width, so as to In the insertion of the thin slice instrument such as screwdriver, joint motion is stirred so as to drive, and by the width median plane of link slot with The coplanar setting in axial centre face of joint is stirred, in order to improve the reliability of gearing.It is provided with simultaneously in link slot with stirring The blind hole of the common longitudinal center line of joint, in order to the connection of the instruments such as small screwdriver.It is semicircle boss to extrude boss E4, is related to Be arranged symmetrically two of elastic plate width median plane, while making bullet by the restriction protrusion on upper lid to compress extruding boss Property plate deformation, it is ensured that switching push button carries out reliable in place during state switching.

As shown in figure 13, the present embodiment is often controlled loaded on expense and used in electricity box H：When installing first, by power office professional people Member opens transparent latch fitting, and according to power utilization environment selection mode switching state, is then shut off transparent latch fitting, is locked at closure position Put, pull down electricity box lid, breaker is installed on expense control electricity box base, and connect wire, be then shut off expense control electricity box lid, and it is right Expense control electricity box are locked or lead sealing, only retain the wicket of case lid, this wicket is used for user's operating breaker handle, because this is small Window width is identical with breaker neck breadth, makes the transparent latch fitting in the present embodiment in closure by the plastic cement up and down of casing wicket Muscle structure is propped up.So user can not carry out unlatching operation to transparent latch fitting, the state switching of mode switch also can not be just carried out, User can only watch control signal situation and which kind of operator scheme breaker is in.If desired mode switch state is cut Change, it is necessary to which power office staff unlocks or released lead sealing to expense control electricity box, opening is whole to take transparent lock after control electricity box lid, opening Part is in free state, can open transparent latch fitting, opens and can be carried out using instrument promotion switching push button after transparent latch fitting Pattern switching.So as to effectively limit the operation that unauthorized user carries out mode switch, and due in mode switch and finger Show and added above lamp transparent latch fitting, the conductive slot of circuit is dielectrically separated from, substantially increase the electromagnetic compatibility of product Performance indications.

Need to be connected with stirring joint by corresponding instrument during routine use, the control of recycling instrument, which is stirred, to be connect Head drives switching push button motion.Switching push button is moved towards microswitch during positive movement, and extruding boss is limited in motion process Position projection acts on inside elasticity of compression plate, by expression lobes structure, and elastic plate has deformation groove, and extruding boss shrinks logical because of extruding The restriction protrusion of shell is crossed, now pressing plate can contradict microswitch by rear switching push button in place and stop motion, and by fine motion The elastic arm pressure of switch, now microswitch normally opened contact conducting, normally-closed contact disconnects, so as to realize the switching of implementation pattern. Simultaneously by extruding boss after restriction protrusion not in elasticity of compression plate, elastic plate recovers spacing.Positive movement rear fender and fine motion Switch departs from, and microswitch normally opened contact disconnects, normally-closed contact closure, the switching of implementation pattern.

Again because switching push button is fixed together with casing cover by manual assembly, during installation, again by extruding Bulge-structure, deforms, elastic plate shrinks after expression lobes are pressurized because there is deformation groove, and by the restriction protrusion of shell, After restriction protrusion, switching push button is stablized on casing cover in place, simplifies subsequent product installation steps.And pass through elongation Pressing plate touch microswitch, by default, pressing plate is not contacted with microswitch, realize completely isolated, Ci Zhongfang Formula, increases the creep age distance of electrical structure, has ensured the personal safety of operator.

By motor output torque during the remote electrically controlled divide-shut brake of the present embodiment, reached properly by multi-stage speed-reducing gear Rotating speed and moment of torsion, deliver torque to the driving gear of clutch finally by three pole reduction gearing, driving gear drives Combined floodgate axle rotates the combined floodgate for realizing breaker.Now spring is compressed in housing, and compression stress makes driven gear and driving gear Engagement is kept, in making process, clutch remains engagement, until turning to closing position, motor stops Rotation stop is moved, that is, completes feed motion.Because the tooth section of the clutch field of conjugate action is isosceles triangle so that clutch is dynamic Power equivalent can be transferred to axial direction when departing from along the torsion component in circular arc tangential line direction.And circuit breaker operating handle combined floodgate angle Only 90 °, when continuing rotation because of position detection failure after driving gear completes to close a floodgate, now machine instantaneously occurs for clutch Structure stall, as a result makes the moment of torsion between driving gear and driven gear increase to the support force much larger than friction force value and spring suddenly, Driven gear compression spring breaks away from the engagement of driving gear to housing motion, so as to realize that stall power departs from, to whole product Serve the effect of threshold value protection.Needed after combined floodgate carry out semi-automatic operation breaker on/off switch when, due to driving gear with it is driven Gear under spring action, is tightly engaged, when it is semi-automatic pull handle when, driving gear because motor stop being locked out not Dynamic, in the corresponding square hole in combined floodgate axle one end insertion driven gear axle center, the other end inserts each each pole handle axle center of pole breaker, and Interconnection is tight fit, and when handle pull force reaches above-mentioned friction force value, spring is further compressed, and driven gear is along bullet Spring compression direction is moved, and the field of conjugate action reduces between driving gear and driven gear, when handle pull force is much larger than frictional force, bullet Spring is compressed completely, and driven gear is slided on driving gear surface, realizes the disengaging of power, keeps pull force, you can real Existing automanual splitting or integrating lock action.And do not need drive gear revolution to avoid combined floodgate space, closing time during this It is short, save electric energy.Simultaneously during on/off switch is performed, motor drives in the same direction all the time, simplifies control flow, is beneficial to The raising of reliability.

Claims (10)

1. a kind of external breaker of electric energy meter, including housing, electricity behaviour module, circuit breaker multiple levels and opening/closing operation mechanism, electricity behaviour Module is provided with the switching push button that operator scheme is switched to long-range semi-automatic or long-range fully automatic mode, and switching push button is installed on In neck on housing, microswitch is connected on the pcb board below neck, and switching push button can be moved and fine motion in neck Opening/closing operation mechanism is switched to long-range full-automatic or long-range semi-automatic operation by switch contact or separation, it is characterised in that：It Also include preventing the transparent latch fitting of user misoperation, one end of transparent latch fitting is articulated with the housing of electricity behaviour's module, other end button It is connected in electricity behaviour's module and coats switching push button；

The switching push button includes elastic plate and is connected to the pressing plate of its underpart, and the top surface of elastic plate, which is provided with, stirs joint, side Provided with extruding boss, the top surface for stirring joint is not higher than the top surface of neck, and the inwall of the neck is provided with restriction protrusion, utilizes work Joint is stirred in tool promotion makes switching push button be moved toward or away from microswitch, implementation pattern switching；

The opening/closing operation mechanism include be connected to the motor being sequentially arranged on housing, reducing gear, clutch and Combined floodgate axle, clutch includes coaxially arranged driving gear and driven gear, driven provided with making between driven gear and housing Gear engages the spring being integrated with driving gear, and the axle center of driven gear is fixed in one end of combined floodgate axle, and the other end passes through bullet Spring is stretched into be connected in housing with the handle of each pole breaker, and motor driving driven gear rotarily drives the rotation realization of combined floodgate axle Close a floodgate, reducing gear includes multi-stage speed-reducing gear, and one reduction gearing is provided with the projection for promoting separating brake lever rotation, separating brake thick stick Bar is installed on housing by connecting pole, and one end of separating brake lever is rotated by projection promotion around connecting pole makes the other end drive open circuit Separating brake is realized in the motion of device release lever.

2. the external breaker of electric energy meter according to claim 1, it is characterised in that：The driving gear is duplicate gear, Duplicate gear includes large and small two gear rings, and bull gear is radial direction wheel rim, and small gear ring is axial gear ring, and the driven gear is energy The tooth section of enough intermeshing face gears of small gear ring with the driving gear, the tooth section of face gear and axial gear ring It is isosceles triangle；The wheel hub two ends of driven gear are stretched out outside face of gear, and one end is the rank being connected with the driving gear Terraced boss, the other end are connector, and the axial centre of connector is provided with the connecting hole for being used for connecting the combined floodgate axle, driven gear Connection head end be provided with and be used to place the annular groove of the spring, the internal diameter of annular groove is matched with the internal diameter of spring, annular groove External diameter is matched with the external diameter of spring.

3. the external breaker of electric energy meter according to claim 2, it is characterised in that：The housing includes drain pan and upper lid, The axial center position of the drain pan inwall correspondence driving gear is provided with the gathering sill for being matched with the ladder boss, upper lid inwall Being provided with the correspondence connector position is used to pacify spring-loaded locating dowel, and the correspondence separating brake lever both sides are provided with spacing prominent Rise, the neck is located on the roof of upper lid.

4. the external breaker of electric energy meter according to claim 1, it is characterised in that：The reducing gear is gear pair, bag Include same on the primary speed-down gear engaged successively, double-reduction gear and three-level reduction gearing, the output shaft of the motor Axle is connected with worm screw, primary speed-down gear and worm engaging, and three-level reduction gearing is engaged with the driving gear, double reduction tooth Wheel and three-level reduction gearing are on the duplicate gear that two gear rings are straight-tooth, double-reduction gear and are provided with for described point Brake lever rod provides the projection of power.

5. the external breaker of electric energy meter according to claim 4, it is characterised in that：The combined floodgate axle is square shaft；Connecting hole To be matched with the square hole of the combined floodgate axle.

6. the external breaker of electric energy meter according to claim 1, it is characterised in that：The transparent latch fitting is the entirety of L-type Part, including two L-types linking arm and between two linking arms similar shape latch plate, the latch plate is stretched out in linking arm one end Outside, the other end is concordant with latch plate, hinge hole is provided with the position outside linking arm blocking plate, the other end is provided with inwardly projecting Positioning boss, transparent latch fitting is by the hinge through hinge hole on the housing.

7. the external breaker of electric energy meter according to claim 6, it is characterised in that：Correspondence is described fixed in the electricity behaviour module Be provided with corresponding C-shaped channel at the lug boss position of position, the upper cell wall of C-shaped channel be acute angle, lower cell wall be in obtuse angle, latch plate with hinge side Relative edge is provided with gap, and gap is located at latch plate width center.

8. the external breaker of electric energy meter according to claim 1, it is characterised in that：The switching push button is shaped as L-type, The elastic plate, pressing plate, stir joint and silica gel button that extruding boss is single injection-molded, switching push button is flat with elastic plate Row is arranged in the groove face of neck.

9. the external breaker of electric energy meter according to claim 8, it is characterised in that：The elastic plate is rectangular slab, thereon Deformation groove is disposed with along its length, its width is vertical with the direction of motion of switching push button, deformation groove is penetration thickness side To rectangle square hole, deformation groove is related to two that the elastic plate width median plane is arranged symmetrically, described to stir joint For cylindrical type boss, its top surface offers the link slot parallel with the elastic plate width, the width side of the link slot Coplanar to median plane and the axial centre face for stirring joint, extruding boss is semicircle boss, is related to the elastic plate Be arranged symmetrically two of width median plane, restriction protrusion is related to two that neck width median plane is arranged symmetrically.

10. the external breaker of electric energy meter according to claim 9, it is characterised in that：It is provided with the link slot with stirring The blind hole of the common longitudinal center line of joint.