CN205406447U - Separating brake dropout maintain the body and circuit breaker - Google Patents

Abstract

The utility model relates to a circuit breaker field, open separating brake dropout maintain the body and circuit breaker, separating brake dropout maintain the body include casing (1), fix motor (2) on the casing, rotationally set up drive gear (3) and release lever (6) on the casing, drive gear (3) power transmission is passed through in motor (2), be provided with briquetting (7) on the terminal surface of drive gear (3), the one end of release lever (6) can cooperate with briquetting (7), the other end is used for setting up dropout universal driving shaft (8) be connected with the inside dropout linkage structure of circuit breaker, motor (2) according to control command when direction is rotated, briquetting (7) can drive the one end of release lever (6), make dropout universal driving shaft (8) of release lever (6) other end drive the inside dropout link gear dropout of circuit breaker in order to realize automatic separating brake and to keep the separating brake state, in order the function such as can realize manually to close a floodgate behind the automatic separating brake, and a structure of the present invention is simple, divide -shut brake matching section mobility is good and oening speed is fast.

Description

Separating brake tripping retaining mechanism and circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically, relates to a separating brake dropout hold mechanism to and a circuit breaker that has this kind of separating brake dropout hold mechanism.

Background

With the development of the technical level, the power consumption of daily life and production is increasingly large, and accordingly, in order to ensure the safety of power consumption, the circuit breaker product with the automatic switching-on and switching-off function is more and more widely applied to the smart grid, for example, a self-resetting overvoltage and undervoltage protector, a prepayment reclosing circuit breaker and the like can realize the remote control of the switching-on and switching-off of the circuit breaker.

However, in practical applications, when the automatic reclosing device drives the breaker handle to close or open through its own operating handle, the phenomenon that the circuit breaker reclosing is asynchronous often occurs, and the phenomenon is particularly prominent in a multi-pole breaker, which will result in that the last pole breaker cannot normally close and the circuit cannot be connected, thereby bringing about a great circuit fault or a potential safety hazard.

In addition, in some application occasions, the requirement that manual switching-on cannot be performed after switching-off is required to be met, and the control motor can be automatically switched on after a control instruction is obtained, however, the situation that manual switching-on is performed after switching-off often occurs in the automatic reclosing device, so that some users can not pay for electricity.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims at providing a separating brake dropout retaining mechanism to can not manual combined floodgate after can realizing the automatic separating brake of circuit breaker, and simple structure, the synchronous linkage nature of separating brake are good and the separating brake is fast.

Therefore, the utility model provides a separating brake tripping retaining mechanism, which comprises a shell, a motor fixed on the shell, a driving gear and a tripping rod which are rotatablely arranged on the shell, wherein the motor transmits power through the driving gear; the end face of the driving gear is provided with a pressing block, one end of the tripping rod can be matched with the pressing block, the other end of the tripping rod is used for setting a tripping linkage shaft connected with a tripping linkage structure inside the circuit breaker, and when the motor rotates in one direction according to a control command, the pressing block can drive one end of the tripping rod, so that the tripping linkage shaft at the other end of the tripping rod drives the tripping linkage mechanism inside the circuit breaker to trip to realize automatic brake opening and keep a brake opening state.

Thus, since the housing is rotatably provided with the driving gear, the handle turntable and the trip rod, and the pressing block on the driving gear can drive one end of the trip rod to drive the trip rod to rotate when the driving gear rotates, and the handle link of the handle turntable is located in the receiving groove of the handle gear, for example, when the circuit breaker is in an open state, the motor can rotate in a preset direction according to a control instruction, such as forward rotation, so that the handle gear rotates, one groove wall of the receiving groove on the handle gear drives the handle link to drive the handle turntable to rotate, and further all handles of the circuit breaker are driven to automatically rotate through the inner shaft of the handle, and then the motor rotates in one direction, i.e. in the reverse direction, to drive the handle gear to return to an initial position, at this time, the handle turntable does not rotate in the reverse direction of the handle gear, so that the handle link can freely, make the handle carousel can be at the within range free rotation of holding tank for the handle gear to realize the manual divide-shut brake after automatic combined floodgate, at this moment, the circuit breaker is in the combined floodgate state.

When the motor further rotates reversely according to the control instruction, the pressing block on the handle gear drives one end of the trip rod to drive the trip rod to rotate, at the moment, the trip linkage shaft on the other end of the trip rod drives the trip linkage mechanism inside the breaker to trip, so that the breaker automatically opens the brake, the motor stops rotating after opening the brake, at the moment, because the motor stops rotating, the pressing block on the driving gear presses one end of the trip rod to keep the opening state, at the moment, the switch cannot be manually closed.

Therefore, as mentioned above, the opening and closing operation control device can realize the functions of automatic opening and closing, manual opening and closing after automatic closing, incapability of manual opening and closing after automatic opening and the like, and the opening and closing operation control device has a simple structure, good opening and closing synchronous linkage and high opening speed through the mutual matching of the handle gear, the handle turntable and the driving gear.

Furthermore, the switching-on and switching-off operation control device also comprises a detection device for detecting a switching-on state, an initial state and a switching-off state.

Furthermore, the switching-on/off operation control device also comprises a control circuit board electrically connected with the motor, wherein the detection device comprises a magnet arranged on the handle gear and the handle turntable and a Hall sensor arranged on the control circuit board; alternatively, the detection means is a microswitch.

Further, the motor is an open-loop control stepping motor, and the control circuit board is set to output a level signal of 0 volt or 220 volt to the open-loop control stepping motor.

In addition, the tripping rod comprises a column body part, the column body part is rotatably arranged on the shell through a supporting shaft penetrating through a center hole of the column body part and an assembling hole of the shell, a pull rod part matched with the pressing block in shape is extended out of one end of the peripheral surface of the column body part, a tripping linkage part is extended out of the other end of the peripheral surface of the column body part, the tripping linkage part is movably contained in a limiting groove of the shell, and a tripping linkage shaft is arranged on the position of the tripping linkage part, which faces away from the limiting groove.

In addition, the output shaft of the motor is formed into a worm; the driving gear comprises a worm gear and a straight gear or a helical gear and a straight gear which are coaxially arranged, wherein the worm gear or the helical gear is meshed with the worm, and the straight gear is meshed with the handle gear.

Further, the diameter of the spur gear is smaller than the diameter of the worm gear or the helical gear.

In addition, the accommodating groove is a sector-shaped opening arranged around the mounting hole of the handle gear; the handle turntable comprises a shaft body and a handle connecting rod arranged on the shaft body, an interval is formed between the handle connecting rod and the peripheral surface of the shaft body, the shaft body penetrates through the mounting hole, so that the handle connecting rod is positioned in the fan-shaped opening, and the hole wall of the mounting hole is positioned in the interval; a polygonal hole is formed on the end face of the shaft body, and the polygonal hole is assembled with the inner shaft of the handle.

Furthermore, the utility model provides a circuit breaker, including the circuit breaker main part, and divide-shut brake operation controlling means, wherein, be provided with above arbitrary in the divide-shut brake operation controlling means the separating brake dropout retaining mechanism, the other end of tripping bar is connected through the dropout link structure of dropout universal driving shaft with the circuit breaker main part.

Therefore, as mentioned above, the circuit breaker can accurately and quickly realize the functions of automatic opening and closing, manual opening and closing after automatic closing, incapability of manual closing after automatic opening and the like.

Further, the circuit breaker is a 1P + N pole miniature circuit breaker or a 3P + N pole miniature circuit breaker.

The above features and advantages and other features and advantages of the present invention are described in detail in the following detailed description of the preferred embodiments of the invention with reference to the accompanying drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrating by way of illustration and not limiting the invention,

fig. 1 is a schematic structural view of an opening/closing operation control device according to an embodiment of the present invention, in which a tripping retaining mechanism of the present invention is shown;

FIG. 2 is a partial schematic view of FIG. 1;

FIGS. 3 and 4 are schematic structural views of the drive gear of FIG. 1;

FIG. 5 is a schematic view of the handle gear of FIG. 1;

FIGS. 6 and 7 are schematic structural views of the handle turntable of FIG. 1;

FIG. 8 is a schematic view of the trip bar of FIG. 1;

FIG. 9 is a partial schematic structural view of the housing of FIG. 1;

fig. 10 and 11 are schematic structural views of a control circuit board and a detection device on a handle turntable in the separating brake tripping retaining mechanism of the present invention;

fig. 12 is a schematic structural diagram of the circuit breaker of the present invention.

Description of the reference numerals

1-housing, 2-motor, 3-driving gear, 4-handle gear, 5-handle rotary disk, 6-trip bar, 7-press block, 8-trip linkage shaft, 9-in-handle shaft, 10-accommodating groove, 11-handle connecting rod, 12-control circuit board, 13-magnet, 14-Hall sensor, 15-column part, 16-center hole, 17-assembly hole, 18-supporting shaft, 19-pull rod part, 20-trip linkage part, 21-limiting groove, 22-worm, 23-worm gear, 24-straight gear, 25-helical gear, 26-mounting hole, 27-sector opening, 28-shaft body, 29-interval, 30-polygon hole, 31-breaker main body, 32-switching-on and switching-off operation control device.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1, the separating brake tripping retaining mechanism of the present invention is included in a separating brake operation control device, which includes a housing 1, a motor 2, a driving gear 3, a handle gear 4, a handle turntable 5, and a tripping rod 6, wherein the motor 2 is fixed on the housing 1, the driving gear 3, the handle gear 4, the handle turntable 5, and the tripping rod 6 are rotatably disposed on the housing 1, and the motor 2 performs power transmission with the handle gear 4 through the driving gear 3; wherein, be provided with briquetting 7 on drive gear 3's the terminal surface, the one end of trip bar 6 can cooperate with briquetting 7, the other end is used for setting up the dropout universal driving shaft 8 (at this moment, this divide closing operation controlling means still does not include this dropout universal driving shaft 8) of being connected with the inside dropout linkage structure of circuit breaker, handle carousel 5 is used for setting up the handle interior shaft 9 that links to each other with all handles of circuit breaker (equally, at this moment, this divide closing operation controlling means still does not include this handle interior shaft 9), handle gear 4 has the holding tank 10 of circumference extension, handle connecting rod 11 of handle carousel 5 is located holding tank 10, wherein, motor 2 rotates according to control command in predetermineeing the direction, after handle gear 4 drives handle carousel 5 and rotates in order to drive all handles automatic switchings of circuit breaker through handle interior shaft 9, motor 2 is reverse rotation promptly in a direction and drives handle gear 4 and gets back to the initial position so that handle carousel 5 can freely be in holding tank 10 The brake can be opened and closed manually by rotating; when the motor 2 further rotates reversely according to the control instruction, the pressing block 7 can drive one end of the tripping rod 6, so that the tripping linkage shaft 8 at the other end of the tripping rod 6 drives the tripping linkage mechanism inside the circuit breaker to trip, thereby realizing automatic brake opening and keeping the brake opening state.

Thus, since the driving gear 3, the handle gear 4, the handle turntable 5 and the trip bar 6 are rotatably disposed on the housing 1, and the pressing block 7 on the driving gear 3 can drive one end of the trip bar 6 to drive the trip bar 6 to rotate when the driving gear 3 rotates, and the handle link 11 of the handle turntable 5 is located in the accommodating groove 10 of the handle gear 4, for example, when the circuit breaker is in an open state, the motor 2 can rotate in one direction according to a control instruction, such as forward rotation, so that the handle gear 4 rotates, one groove wall of the accommodating groove 10 on the handle gear 4 drives the handle link 11, thereby driving the handle turntable 5 to rotate, and further driving all handles of the circuit breaker to automatically close through the handle inner shaft 9, and subsequently, the motor 2 rotates in a reverse direction to drive the handle gear 4 to return to an initial position, at this time, since another groove wall of the handle link 10 has a circumferential interval with the handle accommodating groove 11, handle carousel 5 does not rotate along with handle gear 4 antiport to make handle connecting rod 11 can free activity in holding tank 10, make handle carousel 5 can be for handle gear 4 free rotation in the within range of holding tank 10, with the manual divide-shut brake after realizing automatic combined floodgate, at this moment, the circuit breaker is in the state of closing a floodgate.

When the motor 2 further rotates reversely according to the control instruction, the pressing block 7 on the handle gear 4 drives one end of the trip bar 6 to drive the trip bar 6 to rotate, at the moment, the trip linkage shaft 8 on the other end of the trip bar 6 drives the trip linkage mechanism inside the circuit breaker to trip, so that the circuit breaker automatically opens, the motor 2 stops rotating after opening, at the moment, the pressing block 7 on the driving gear 3 presses one end of the trip bar 6 to keep the opening state, and at the moment, the circuit breaker cannot be manually closed.

Therefore, as mentioned above, the opening and closing operation control device can realize the functions of automatic opening and closing, manual opening and closing after automatic closing, incapability of manual opening and closing after automatic opening and the like, and the opening and closing operation control device has a simple structure, good opening and closing synchronous linkage and high opening speed through the mutual matching of the handle gear, the handle turntable and the driving gear.

For example, in the application of a prepaid electric meter, after the user is in arrears, the motor 2 drives the driving gear 3 to rotate, the press block 7 drives one end of the trip rod 6 to automatically switch off, at the moment, the user cannot manually switch on, the electricity consumption caused by the fact that the user does not pay can be effectively avoided, after the user pays, one groove wall of the accommodating groove 10 of the handle gear 4 drives the handle turntable 5 to rotate to automatically switch on, and after the automatic switch on, the motor 2 drives the driving gear 3 to return to the initial position, so that the handle turntable 5 can automatically rotate to manually switch on and switch off.

Further, in order to more accurately control the motor 2 to perform opening and closing and drive the handle gear 4 to return to the initial position through the driving gear 3, preferably, the opening and closing operation control device further includes a detection device for detecting the closing state, the initial state and the opening state, so that after reclosing, the detection device sends a control instruction to the motor 2 to stop the rotation of the motor 2, thereby accurately implementing closing, and similarly, for the opening and the return of the handle gear 4 to the initial position, the same principle is also used, and the detection device stops the motor 2 through the control instruction.

Further, as shown in fig. 5 and 10, in a preferred structure, a control circuit board 12 electrically connected with the motor 2 is provided in the housing 1, wherein the detecting means includes a magnet 13 provided on the handle gear 4 and the handle rotating disk 5, and a hall sensor 14 on the control circuit board 12, so that the handle gear 4 rotates, and the control circuit board 12 stops the motor 2 when the magnet 13 thereon is sensed by the hall sensor 14 on the control circuit board 12. And when the brake is opened, the magnet 13 on the handle gear 4 is inducted with the hall sensor 14 for controlling the opening on the circuit board 12, thereby stopping the motor 2 after the opening. Similarly, when the handle gear 4 returns to the initial position, the magnet 13 on the handle gear 4 will sense the hall sensor 14 controlling the initial position on the circuit board 12 to stop the motor 2.

Of course, alternatively, in another structure, the magnet 13 may be formed on the handle rotary disk 5, for example, when the brake is opened, the magnet 13 on the handle rotary disk 5 will sense the hall sensor 14 controlling the opening on the circuit board 12, so as to stop the motor 2 after the brake is opened.

In addition, the above-mentioned detection means may be in the form of a magnet and a hall sensor, and may be a micro switch, that is, a micro switch that triggers a set position when the handle gear 4 or the handle dial 5 is rotated to the set position, and further stops the motor 2.

Further, the motor 2 may be an open-loop controlled stepper motor, and the control circuit board 12 is configured to output a 0 volt or 220 volt level signal to the open-loop controlled stepper motor, the motor 2 being rotated when the 220 volt level signal is output, and the motor 2 being stopped when the 0 volt level signal is output.

In addition, the trip bar 6 may have various structural forms as long as the above-described functions can be achieved, for example, in a preferred form of construction, as shown in figures 1, 2 and 8, the trip bar 6 includes a cylindrical portion 15, the cylindrical portion 15 is rotatably provided on the housing 1 by a support shaft 18 (shown in fig. 1 and 2) passing through a center hole 16 thereof and a fitting hole 17 (shown in fig. 9) of the housing 1, and one end of the outer peripheral surface of the column part 15 is extended with a pull rod part 19 matched with the pressing block 7 in shape, the other end of the peripheral surface of the column part 15 extends out of a tripping linkage part 20, the tripping linkage part 20 is movably accommodated in a limiting groove 21 of the shell 1, a tripping linkage shaft 8 is arranged on the part of the tripping linkage part 20 back to the limiting groove 21, thus, when the pressing block 7 acts on the pull rod part 19, the trip bar 6 rotates around the supporting shaft 18, and the trip linkage shaft 8 at the other end of the trip bar 6 can timely and accurately drive the circuit breaker to trip and open the brake. Of course, the trip bar 6 can also be reset after the press block 7 is separated from the pull rod part 19.

As shown in fig. 3 and 4, in a structure form in which the motor 2 performs power transmission with the handle gear 4 through the driving gear 3, in order to make the structure more compact and occupy less space, it is preferable that the output shaft of the motor 2 is formed as a worm 22; and the driving gear 3 includes a worm wheel 23 and a spur gear 24 or a helical gear 25 and a spur gear 24 which are coaxially arranged, and the pressing piece 7 is formed on a gear end surface of the worm wheel 23 or the helical gear 25 facing away from the spur gear 24, wherein the worm wheel 23 or the helical gear 25 is engaged with the worm 22, and the spur gear 24 is engaged with the handle gear 4, so that the reliable transmission of the power is realized through the double-gear structure.

Further, the diameter of the spur gear 24 is smaller than that of the worm gear 23 or the helical gear 25, thereby further reducing the occupied space and the volume of the miniature circuit breaker.

In addition, in a more preferred mating structure of the handle gear 4 and the handle dial 5, as shown in fig. 5, 6 and 7, the receiving groove 10 is a fan-shaped opening 27 arranged around the mounting hole 26 of the handle gear 4, that is, a portion of the handle gear 4 is cut away to form a notch, i.e., the receiving groove 10. The handle turntable 5 comprises a shaft body 28 and a handle connecting rod 11 arranged on the shaft body 28, the outer peripheral surfaces of the handle connecting rod 11 and the shaft body 28 are provided with a gap 29, the shaft body 28 penetrates through the mounting hole 26, so that the handle connecting rod 11 is positioned in the fan-shaped opening 27, and the hole wall of the mounting hole 26 is positioned in the gap 29; that is, the handle gear 4 is fitted over the shaft body 28 of the handle dial 5 so that they form a tight and compact fit, while the end face of the shaft body 28 is formed with a polygonal hole 30 which is fitted with the inner handle shaft 9, such as a tri-sided hole and a tri-sided shaft fit.

Of course, in other structures, an arc-shaped groove may be formed on the end surface of the handle gear 4 as the receiving groove 10, and the handle link 11 is perpendicular to the end surface of the handle gear 4 to be located in the receiving groove 10.

In addition, on the basis, the utility model also provides a circuit breaker, as shown in fig. 12, this circuit breaker includes circuit breaker main part 31, and the divide-shut brake operation controlling means 32 of arbitrary above, be provided with the divide-shut brake operation controlling means 32 of arbitrary above separating brake dropout retaining mechanism of arbitrary above, wherein, the other end of trip bar 6 is connected with the dropout linkage structure in the circuit breaker main part 31 through tripping linkage shaft 8; and the handle turnplate 5 is connected with all the handles of the breaker main body 31 through the handle inner shaft 9 so as to realize the simultaneous opening and closing of all the handles of the breaker.

Further, the circuit breaker is a 1P + N pole miniature circuit breaker or a 3P + N pole miniature circuit breaker.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and in the technical concept of the present invention, those skilled in the art can perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention. In addition, if there is no technical contradiction or obstacle between the various embodiments of the present invention, they can be combined arbitrarily, and they should be regarded as the disclosure of the present invention as long as they do not violate the idea of the present invention.

Claims (9)

1. A brake separating tripping retaining mechanism is characterized by comprising a shell (1), a motor (2) fixed on the shell (1), a driving gear (3) and a tripping rod (6) which are rotatably arranged on the shell (1), wherein,

the motor (2) transmits power through the driving gear (3);

a pressing block (7) is arranged on the end surface of the driving gear (3), one end of the trip bar (6) can be matched with the pressing block (7), the other end is used for arranging a trip linkage shaft (8) connected with a trip linkage structure in the circuit breaker,

when the motor (2) rotates in one direction according to a control instruction, the pressing block (7) can drive one end of the tripping rod (6), so that the tripping linkage shaft (8) at the other end of the tripping rod (6) drives the tripping linkage mechanism inside the circuit breaker to trip, and automatic brake opening is realized and the brake opening state is kept.

2. The opening trip retaining mechanism of claim 1, further comprising a detection device for detecting the opening status.

3. The opening trip retaining mechanism according to claim 2, further comprising a control circuit board (12) electrically connected to the motor (2), and a handle turntable (5) for power transmission with the driving gear (3), wherein,

The detection device comprises a magnet (13) arranged on the handle turntable (5) and a Hall sensor (14) arranged on the control circuit board (12); or,

the detection device is a microswitch.

4. The opening trip retaining mechanism according to claim 3, wherein the motor (2) is an open loop controlled stepper motor,

the control circuit board (12) is arranged to output a level signal of 0 volt or 220 volt to the open loop control stepper motor.

5. The brake separating trip retaining mechanism according to any one of claims 1-4, characterized in that the trip bar (6) comprises a cylindrical body (15), the cylindrical body (15) is rotatably disposed on the housing (1) through a support shaft (18) passing through a center hole (16) of the cylindrical body and a mounting hole (17) of the housing (1), a pull rod part (19) matched with the shape of the pressing block (7) is extended from one end of the outer circumferential surface of the cylindrical body (15), a trip linkage part (20) is extended from the other end of the outer circumferential surface of the cylindrical body (15), the trip linkage part (20) is movably accommodated in a limit groove (21) of the housing (1), and a trip linkage shaft (8) is disposed on a part of the trip linkage part (20) facing away from the limit groove (21).

6. The opening trip retaining mechanism according to claim 1, characterized in that the output shaft of the motor (2) is formed as a worm (22);

The driving gear (3) comprises a worm gear (23) and a straight gear (24) or a helical gear (25) and a straight gear (24) which are coaxially arranged, wherein the pressing block (7) is arranged on the end face, back to the straight gear (24), of the worm gear (23) or the helical gear (25).

7. The opening trip retaining mechanism according to claim 6, wherein the diameter of the spur gear (24) is smaller than the diameter of the worm gear (23) or the helical gear (25).

8. A circuit breaker, characterized by comprising a circuit breaker main body (31), and a switching-on and switching-off operation control device (32), wherein the switching-on and switching-off operation control device (32) is internally provided with a switching-off tripping retaining mechanism according to any one of claims 1-7, and the other end of the tripping rod (6) is connected with a tripping linkage structure of the circuit breaker main body (31) through a tripping linkage shaft (8).

9. The circuit breaker of claim 8, wherein the circuit breaker is a 1P + N micro-type circuit breaker or a 3P + N micro-type circuit breaker.