SU1495873A1 - Automatic disconnector - Google Patents

Abstract

The invention relates to electrical engineering. The aim of the invention is to simplify the design, improve overall mass characteristics, increase the resource and reduce the labor intensity of manufacture. The circuit breaker consists of two semi-bodies 1, a button 3, a plate 4, a mounting sleeve 5 with a nut 6, a cover 7, an indicator ring 8, a rod 9, a rod 11 with a hook 12, a spring 13 with a lock 14, a spring 15 for returning a button, a base 16 , pawl 18, latches 19 with spring 20, pusher 21, contact plate 22, spring 24, axis 25, axis 26 of movable contacts 28, fixed contacts 29, contact spring 30, output rails 31, and electrical insulating base 32 with a thermo-bimetallic sensor 34 and thermal compensator 35. 13 Il.

Description

four

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with

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31495873

7, indicator ring 8, rod 9, rod 11 with a hook 12, springs 13 with a lock 14,. pryu siny 15 return buttons, base 16, dogs 18s 5 latch 19 with spring 20, pusher

axes 25, axes 26 of movable contacts 28, fixed contacts 29, contact spring 30, hatch tires 31 and electrical insulation 32 s

latches 19 with a spring 20, a pusher with a thermo-methyl sensor 34 and: 21, a contact board 22, springs 24, a thermal compensator 35 13 Il.

axes 25, axes 26 of movable contacts 28, fixed contacts 29, contact spring 30, hatch tires 31, and electrical insulation 32 s

a thermo-methyl sensor 34 and a thermal compensator 35 13 Il.

The invention relates to electrical engineering, in particular to circuit breakers designed to protect electrical circuits and consumers of electrical energy from overload currents and short-circuit currents.

The purpose of the invention is to simplify the design of the circuit breaker, improve the overall mass characteristics, increase the service life and reduce the labor intensity of manufacturing.

FIG. 1 shows a single-pole circuit breaker, the On position, a slit; figure 2 is the same, the position of the Vs.pyucheno ,. side view; in fig. 3 - the same position Disabled; in fig. 4 - triple-pole circuit breaker, position ON, side view, in Fig. 5, a semi-package of a single-pole circuit breaker, main view; in fig. 6 shows section A-A in FIG. 5j in FIG. 7 - half-body of a three-pole circuit breaker, general view in FIG. 8; section B-B in FIG. 7; in fig. 9 - base of the circuit breaker, side view; FIG. 10 is a view B of FIG. 9; FIG. 11 is a thermo-bimetallic sensor with an electrically insulating base, side view in FIG. 12 is a view of FIG. 11; FIG. 13 is a kinematic circuit of a single-pole circuit breaker.

The circuit breaker consists of two halves 1 and 2 of the case, button 3, nameplate 4 with rated current marking, threaded mounting sleeve 5, nut 6, clamps 7 with locking lug, indicator ring 8, rod 9 with bearing surface 10, rod 11 with a hook 12, retainer springs 13, retainer 14, return springs 15 of the bottom button 16 with lateral planes 17, pawl 18, latch 19 with spring

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20, pusher 21 of contact plate 22 with guiding ribs 23, springs 24, axis 25, axes 26 of movable contacts, strip 27, movable 28 and fixed .29 contacts, contact spring 30, output busbars 31, electrical insulating base 32 with lateral projections 33, thermo-bimetallic element 34, thermal compensator 35, locking washers 36, screws 37, fastening rivets 38. In the upper part of the body there are grooves 39 for the metal base of the mechanism, in the middle part there are guide grooves 40 for the guiding ribs of the contact plate of moving contacts in the bottom h c ti - 4l grooves for lateral projections of electrically insulating base termobimetallicheskogo sensor. The circuit breaker also contains an adjusting screw 42, a plug 43, and a mechanical energy store consisting of a pull 44 with a hook 45, pushers 46 with a bevel 47, washers 48, a spring 49, and a return spring 50 (Fig. 3).

The rod 9 is made flat, the upper part with a bend is installed in the slot of the button 3, has a shoulder in the middle part, passes through the bottom window 16, has a hole in the bottom for an axis of the lock 14, and a support surface at an angle to the pusher.

The rod 11 with the hook 12 is made flat with the shoulders in the upper and middle parts, with which it is fixedly connected to the button 3 and passed through the bottom window 16, has a oval groove in the lower part allowing it to move relative to the rod 9 to remove the lock 14 from the engagement with the base 16 when manually disconnecting the switch.

Between the rods 9 and 11 are the spring 13 and the latch 14, the latter is made flat with gearing in

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top and shank at the bottom.

The base 16 is made in a flat rectangular shape with a window in the middle part and two eyelets made with bends and holes to accommodate the axis of the pawl 18 and accumulate mechanical energy. The side planes 17 of the base 1 6 are inserted into the slots 39 of the housing 1, 2 and are supports of the mechanism.

The dog 18 is made flat and bent in the form of a bracket, forming a rigid double-arm L-shaped lever, one end of the dog (horizontal) supported on the latch 19, and the other (vertical) limits the stroke of the pusher 21;

The pusher 21 is made flat, 20 in the form of a staple with holes and a bend in the upper part. The fold in the middle part of the pusher is the support of the rod 9 and the holes in the side walls. The pusher is attached by an axis to the contact plate of 22 moving contacts. On the latter, a pusher 21 is fixed, movable contacts 28 with a contact spring 30 with the help of axis 26 and

the fixing mechanism, which contains a latch 14 with a spring 13, a stem 11 1C a hook 12, a base 16, an automatic release mechanism, which contains a rod 9 with a supporting surface 10, a pusher 21, a pawl 18, a latch 19 with a spring 20 with an adjusting screw 42, spring 24.

The design of the automatic trigger mechanism is based on the principle of a folding telescopic connection. The rod 9 and the pusher 21 are in line with the action 15 of the closing mechanism. Since the supporting surface of the rod facing the pusher is made at an angle exceeding the friction angle, the pusher is pushed out from the supporting surface of the rod, and in this case the pusher moves along the rod, i.e. these two elements fold as a telescopic link,

The three-pole version of the circuit breaker (Fig. 4) contains all the same parts and components as the single-pole version, and includes connecting parts, an insulation board

51 for three pairs of movable contacts of the strap 27, as well as a spring 24 for each one with guides 52, a latch 19 for the gate of the contacts to the disconnected half thermal and metal sensors. On the lateral surfaces, the con- (three poles) and the case with the three-stroke board 22 are made in the direction of the sockets in the lower part under the thermal barrier of the rib 23, in which it is directed. metal sensors, two selector bulkheads 53, which are both guides for the insulation board of moving contacts and grooves 39 in the upper part for the side planes of the metal 40

It is located in the grooves 40 of the housing 1, 2.

The latch is made in the form of a plate, in the lower part it is fixed with an axis in the holes of the case. The upper part of the latch has a threaded hole with an adjusting screw 42 and is a support for the horizontal shoulder of the pawl 18.

Thermobimetallic sensor is made as a separate module. On the electrically insulating base 32 of rectangular shape with lateral projections 33, outlet busbars 31, thermal compensator 35, thermo-bimetallic element are placed and connected to the base by riveted connection. The lateral projections 33 are inserted into slots 41 of housing 1, 2 and are base supports 32.

Thus, the circuit breaker consists of several mechanisms, a switching mechanism, which contains a button 3, rods 9 and 11, springs 15, a pusher 21, a base 16 and a mechanical energy storage device.

base of the circuit breaker mechanism.

The circuit breaker operates as follows.

To turn on the automatic switch, the key 3 must be turned to the On position all the way down. At the same time, the rod 9 with the supporting surface 10, acting on the pusher 21, begins to move the contact 50 board 22 with the moving contacts 28 up to the stop of the bar 27 into the hook 45 of the 44 drive. Moving down, slat 27 runs onto bevels 47 pushers 46 and disengages from

55 grapple 45 ti gi 44 accumulator.

The accumulation of the accumulator and the instantaneous closure of the movable 28 with 29 fixed contacts occur. The latch 14 is engaged with the axle10

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the fixing mechanism, which contains the latch 14 with the spring 13, the rod 11 1C hook 12, the base 16, the automatic mechanism of the mechanism, which contains the rod 9 with the supporting surface 10, the pusher 21, the pawl 18, the latch 19 with the spring 20 with the adjusting screw 42, the spring 24

The design of the automatic trigger mechanism is based on the principle of a folding telescopic connection. The rod 9 and the pusher 21 are in line with the action 15 of the closing mechanism. Since the supporting surface of the rod faces the thickness

a cattle, made at an angle exceeding the friction angle, the pusher is pushed out from the bearing surface of the rod, and in this case the pusher moves along the rod, i.e. these two elements are folded as a telescopic link,

The three-pole version of the circuit breaker (FIG. 4) contains all the same parts and components as the single-pole version, and includes connecting parts, an insulation board

the bulkheads 53, which are simultaneously guides for the insulation board of moving contacts and grooves 39 in the upper part for the side planes of the metal

base of the circuit breaker mechanism.

The circuit breaker operates as follows.

To turn the circuit breaker on, you need to turn the button 3 to the On position all the way down. In this case, the rod 9 with the supporting surface 10, acting on the pusher 21, begins to move the contact board 22 with movable contacts 28 up to the stop of the bar 27 into the hook 45 ti 44 of the drive. Moving down, slat 27 runs onto bevels 47 pushers 46 and disengages from

45 ti gi 44 storage hopper.

The accumulation of the accumulator and the instantaneous closure of the movable 28 with 29 fixed contacts occur. The latch 14 is engaged with the axle

16 and fixes the autolagator mechanism in the on position.

 To manually turn off the automatic; Česky switch, the button must be: 3 set to Off, having pulled it up. In this case, the rod 11, moving upwards, with its hook 12, removes the retainer 14 from the engagement with the base 16.

The contact board 22 with movable contacts 28, devoid of the stop, moves upward under the action of the spring 24 to the open position, the circuit is opened. Plank 27 engages with a storage ring 44. Indicator ring. 8 comes out of the housing neckline, signaling the disconnected position.

When a current overload occurs in the network, it is automatically disconnected using a thermo-bimetallic sensor. Under the action of currents overheated, the thermo-bimetallic element 34 heats up and, bending under the action of temperature, rotates the latch 19 through the adjusting screw 42, withdraws it from engagement with the pawl 18, the pawl deprived of the stop, under the action of the moment from the pushers | 21, turns on clockwise, freeing the pusher 21, which slips off the bearing surface; 10 of the rod 9 o The contact board 22 with the i-sliding contacts 28 moves up from the action of the spring 24,; At the same time, the pusher 21 collides with the shank of the retainer 14 and removes the retainer from engagement with the seating 16. The button 3 with the rods 9 and t1 and the retainer 14 under the action of the spring 15 moves upwards, and the axis of the retainer drives the horizontal shoulder of the pawl 18 into engagement with the latch. The circuit breaker shuts off the circuit and is ready for the next power up.

The circuit breaker is assembled as follows.

The automatic switch mechanism is assembled on a metal base 16. The whole mechanism is inserted into one body half so that the side planes 17 of the base 16 fit into the grooves 39 in the upper part of the body 1, and the guide ribs 23 of the contact board 22 - into the groove 40 in the middle housing parts 1, then inserting

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five

thirty

35

40

45

50

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With the latch in the housing bore, a thermal-metallic sensor is inserted so that the projections 33 of the insulating base 32 fit into the groove 41 in the lower part of the housing 1, and the second half of the housing 2 closes.

A fastening sleeve 5 and a cover 7 are put on the neck of the housing 1, 2, the rivets 38 are pushed through the holes of the housing and the housing and flared.

The three-pole version of the circuit breaker is assembled with the only difference that in the lower part of the housing three sliding contacts 28 are inserted into the slots 41, and the latch is made of three plates, one for each pole of the circuit breaker.

The circuit breaker has a simple construction, the number of parts is reduced by 10 (for single-pole) and 40 pieces (for three-pole). Reduced dimensions and weight. The weight of the automatic circuit breaker is 31.5 g (single-pole) and 120 g (three-pole), offered 21.5 g Sidopole), and 60 g (three-pole). The resource for manual off-cycle cycles is increased by 3 times, the service life is 2.5 times.

The magnitude of the short-circuit currents switched by the circuit breaker is doubled. In single and three-pole versions, 91-93% of the same parts are used. one

The assembly of the circuit breaker, thanks to the proposed arrangement of components and parts, is carried out with embedded elements with the exception of flaring and gluing operations.

Claims (1)

Invention Formula A circuit breaker comprising a housing, a switching mechanism with a storage device. MexaHH4ecjco energy, spring-loaded rod, base, made in the whole plate with a window in which a spring-loaded rod is installed, a fixation mechanism with a spring-loaded lock, an automatic actuation mechanism with a spring-loaded latch and an adjusting screw, a thermo-bimetallic sensor, a contact plate with moving contacts, fixed contacts, and a sliding screw, a thermo-bimetallic sensor, a contact plate with movable contacts, fixed contacts, and a sliding screw, a thermo-bimetallic sensor, a contact plate with moving contacts, fixed contacts, and a sliding screw, a thermo-bimetallic sensor, a contact plate with moving contacts, fixed contacts, and a sliding screw, a thermo-bimetallic sensor, a contact plate with moving contacts, fixed contacts, and a sliding screw, a thermo-bimetallic sensor, a contact plate with movable contacts, fixed contacts, and a sliding screw, a thermo-bimetallic sensor, a contact plate with moving contacts, fixed contacts, a pin and moving contacts tires, characterized in that, in order to simplify the design, improve the overall mass characteristics, increase the service life and reduce the labor intensity of manufacture, The body and the lower part of the body are grooved, the base is rectangular in shape with two lugs and installed with its side surfaces in the grooves of the upper body, the automatic actuation mechanism is in the form of a straight spring-loaded stem with an inclined support surface and is installed in the base window parallel to the spring-loaded switching mechanism stem. 38 Phie.g a pusher, made in the form of a staple with holes and a bend in the middle part and mounted on a contact plate with the possibility of interaction with an inclined bearing surface of the spring bushing stem, and a spring-loaded pawl, made in the form of a two-armed L-shaped lever fixed in the eyelets of the base and supported one shoulder to the spring-loaded latch, and the other to the pusher, and the thermo-bimetallic sensor is designed as a module with an electrical insulating base, equipped with lateral projections with which it is installed claimed in grooves of the lower housing. iS IS FI.5 3, 1 9  ./ / D yr gdl x..1 Aa -e f ie.5 Fi.b k Fiel Bb 53 J 5J Fiel Fi.8 IB 16 Fi. In M eleven 17 10 25 29 View g 33 S3 u t FIG. eleven Thebes. 12