CN211350518U

CN211350518U - Miniature circuit breaker opening and closing driving device capable of realizing accurate detection

Info

Publication number: CN211350518U
Application number: CN201922311990.1U
Authority: CN
Inventors: 黄穗; 周素珍; 陈清槐
Original assignee: Xiamen Shanxiu Sunshine Technology Co ltd
Current assignee: Xiamen Shanxiu Sunshine Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-25
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a miniature circuit breaker divide-shut brake drive arrangement that can realize accurate detection, which comprises a circuit board, including a motor, an end cap, a controller, and a cover plate, the transmission gear subassembly, final drive gear, driving medium and position detection switch, the motor is connected with the circuit board electricity, motor axial and transmission gear subassembly meshing transmission, final drive gear is located the terminal and the transmission gear subassembly meshing of transmission gear subassembly, the driving medium couples with the circuit breaker handle, position detection switch includes a plurality of first detection switch and a plurality of second detection switch, the last first boss that is provided with of final drive gear, the driving medium lateral wall is provided with the second boss, first boss and second boss are located the positive and negative of circuit board respectively, first detection switch is connected with the positive and negative electricity of circuit board respectively with the second detection switch, a position for detecting first boss and. The utility model discloses to handle and final drive gear detect alone respectively, realize the judgement to closing a floodgate, manual divide-shut brake to realize accurate, reliably detecting.

Description

Miniature circuit breaker opening and closing driving device capable of realizing accurate detection

Technical Field

The utility model belongs to the technical field of the circuit breaker technique and specifically relates to miniature circuit breaker divide-shut brake drive arrangement.

Background

The miniature circuit breaker, abbreviated as MCB, is a terminal protection electrical appliance which is most widely used in the power distribution device of an electrical terminal. The switch-on/off driving module, namely an electric operating mechanism, is an accessory used for controlling the switch-off and switch-on of an MCB (magnetic control bus), and can realize the remote electric switch-on and switch-off of a circuit breaker.

Patent publication No. CN110223889A discloses a switching drive device for a miniature circuit breaker, in which a position detection element is provided in a rotation path of a final stage gear, and a switching position of a handle is indirectly determined by a rotation position of the final stage gear. For some situations where an accurate determination of position is required, such as: in the use of thing networking switch, it has the error through indirect judgement position, can't satisfy the requirement of reliable detection.

Disclosure of Invention

An object of the utility model is to provide a miniature circuit breaker divide-shut brake drive arrangement detects through the individual position to handle and final drive gear, thereby realizes judging and the record, realizing accurate, reliably detecting to divide-shut brake position, manual divide-shut brake that carries on. In order to achieve the above purpose, the utility model adopts the following technical scheme:

can realize miniature circuit breaker divide-shut brake drive arrangement of accurate detection sets up in the miniature circuit breaker casing, including circuit board, motor, transmission gear subassembly, final drive gear, driving medium and position detection switch, motor and circuit board electricity be connected, motor axial and transmission gear subassembly meshing transmission, final drive gear be located the terminal of transmission gear subassembly and the meshing of transmission gear subassembly, driving medium and circuit breaker handle hookup, final drive gear, driving medium and circuit breaker handle coaxial arrangement, final drive gear drive the driving medium and rotate.

The position detection switch include a plurality of first detection switches and a plurality of second detection switches, final drive gear on be provided with first boss, the driving medium lateral wall be provided with the second boss, first boss and second boss be located the positive and negative of circuit board respectively, first detection switch and second detection switch are connected with the positive and negative electricity of circuit board respectively, first detection switch be used for detecting the position of first boss, second detection switch be used for detecting the position of second boss.

The tripping device comprises a tripping driving lever and a tripping gear lever, the tripping driving lever extends out to be linked with a lock catch of the circuit breaker, and the tripping gear lever is separated from or in interference fit with the final-stage driving gear. The position detection switch further comprises a third detection switch electrically connected with the circuit board, a third boss is arranged on the tripping piece, and the third detection switch is used for detecting the position of the third boss.

The tripping device comprises a hinged portion, a hinged hole is formed in the middle of the hinged portion, a positioning column for the hinged hole to insert is arranged on the shell, the tripping deflector rod is perpendicular to the hinged portion and integrally arranged, and the tripping baffle rod is integrally connected with the hinged portion.

The shell is provided with a limiting groove, and the tripping deflector rod penetrates through the limiting groove to be linked with the lock catch of the circuit breaker.

Wherein, the driving medium include transmission main part and transmission shaft, the transmission shaft be special-shaped along axial cross-section, the junction of transmission main part and transmission shaft be provided with special-shaped groove, be equipped with special-shaped shaft hole on the circuit breaker handle axle center, transmission shaft one end insert special-shaped groove and be connected with the transmission main part, the other end inserts special-shaped shaft hole and is connected with the circuit breaker handle.

The transmission gear assembly comprises a worm, a worm wheel and a plurality of reduction gears, the worm is fixedly or integrally arranged on an output shaft of the motor, the worm wheel is meshed with the worm, the worm wheel is meshed with the reduction gears, and the reduction gears are meshed with the final-stage driving gear after being meshed in sequence.

Preferably, a vertical plane where the center point of the final driving gear is located is taken as an interface, the release piece is arranged on one side of the interface, and the center of the reduction gear is arranged on the other side of the interface far away from the release piece.

Due to the adoption of the structure, the utility model discloses following beneficial effect has:

1. the utility model discloses all set up the position detection switch alone in driving medium and final drive gear position, realize direct detection driving medium and final drive gear position. Because the operation of divide-shut brake drive, artifical manual divide-shut brake, the motion of handle all can transmit the driving medium on, set up the second boss on the driving medium and touch second position switch, the homoenergetic reliably feeds back the position state of miniature circuit breaker handle. First boss and second boss are located the tow sides of circuit board respectively, mutually noninterfere, and when first boss touched the first position switch with the reversal to final drive gear corotation, final drive gear was in the intermediate position, did not influence the manual divide-shut brake operation of handle.

2. The front and back surfaces of the circuit board are provided with position detection switches which are not interfered with each other. The position that can make detection switch has more adjustment spaces, and this makes the interval between the detection switch and between detection switch and the structure bigger, and the detection switch position is better according to needs adjustment, and the circuit board changes very easily and changes with low costs to realize accurate, reliable detection.

3. And when the third boss touches the third detection switch, the tripping deflector rod is positioned at a position which enables the MCB to trip and open and limits the MCB to close, so that the position is directly detected. The third detection switch is also far away from other position detection switches, has a large distance with the structural part and can be adjusted according to requirements, so that accurate and reliable detection is realized. The tripping deflector rod is linked with the lock catch of the circuit breaker, and the tripping information of the circuit breaker can be detected by the third detection switch.

4. The center of the reduction gear is arranged on the other side of the interface far away from the tripping piece, so that the tripping deflector rod has better layout and movement space. The tripping stop lever and the third boss are independently arranged, and the positions of the tripping stop lever and the third boss can be matched according to circuit breakers of different manufacturers matched with the tripping stop lever, so that accurate and reliable detection is realized.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure on one side of the front surface of the circuit board of the present invention.

Fig. 2 is a schematic view of a three-dimensional structure on one side of the reverse side of the circuit board of the present invention.

Fig. 3 is a schematic structural diagram of the present invention installed in the housing.

Fig. 4 is a schematic view of the housing of fig. 3 with the hidden housing portion mounted in the other housing half.

Fig. 5 is a schematic structural view of the circuit board according to the present invention.

Fig. 6 is a schematic view of fig. 5 in the direction of a.

Fig. 7 is a schematic left side view of fig. 6.

Fig. 8 is a schematic structural diagram of the transmission body of the present invention.

Fig. 9 is a schematic structural view of the release fastener of the present invention.

Description of the main symbols:

1: wiring board, 2: a motor, 3: transmission gear assembly, 31: worm, 32: worm wheel, 33: reduction gear, 4: final drive gear, 41: first boss, 5: transmission member, 51: second boss, 52: transmission main body, 53: drive shaft, 54: special-shaped groove, 6: disengaging piece, 61: hinge portion, 62: tripping deflector rod, 63: trip lever, 64: third boss, 7: first detection switch, 8: second detection switch, 9: third detection switch, 10: a housing, 11: spacing groove, 20: breaker handle, 21: a special-shaped shaft hole.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the utility model discloses a miniature circuit breaker divide-shut brake drive arrangement that can realize accurate detection installs in the casing 10 of circuit breaker, and this drive arrangement includes circuit board 1, motor 2, drive gear subassembly 3, final drive gear 4, driving medium 5, take off 6 and the position detection switch of fastener. The motor 2 is electrically connected with the circuit board 1, the motor 2 is in meshing transmission with the transmission gear component 3 in the axial direction, and the final-stage driving gear 4 is positioned at the tail end of the transmission gear component 3 and is meshed with the transmission gear component 3. Referring to fig. 4, the transmission member 5 is coupled to the circuit breaker handle 20, the final-stage driving gear 4 and the transmission member 5 are coaxially installed with the circuit breaker handle 20, and the final-stage driving gear 4 drives the transmission member 5 to rotate.

As shown in fig. 9, the release 6 includes a hinge portion 61, a release lever 62, and a release lever 63. The middle part of the hinge part 61 is provided with a hinge hole, the shell is provided with a positioning column for inserting the hinge hole, the tripping deflector rod 62 is vertical to the hinge part 61 and is integrally arranged, and the tripping deflector rod 63 is integrally connected with the hinge part 61. The tripping shift lever 62 extends out to be linked with the lock catch of the circuit breaker, and the tripping stop lever 63 is separated from or matched with the final-stage driving gear 4 in an abutting mode. Referring to fig. 4, the circuit breaker housing 10 is provided with a limiting groove 11, and the trip shift lever 62 passes through the limiting groove 11 to be linked with the latch of the circuit breaker.

As shown in fig. 5 to 7, the position detection switch includes a set of first detection switches 7, two sets of second detection switches 8, and a set of third detection switches 9. The final drive gear 4 is provided with a first boss 41, the side wall of the transmission piece 5 is provided with a second boss 51, the fastening piece 6 is provided with a third boss 64, and the first boss 41 and the second boss 51 are respectively positioned on the front side and the back side of the circuit board 1. The third boss 64 is located on the same surface of the wiring board 1 as the first boss 41. The first detection switch 7 and the second detection switch 8 are respectively electrically connected with the front surface and the back surface of the circuit board 1, the first detection switch 7 is used for detecting the position of the first boss 41, the second detection switch 8 is used for detecting the position of the second boss 51, and the third detection switch 9 is used for detecting the position of the third boss 64.

Referring to fig. 4 and 8, the transmission member 5 includes a transmission main body 52 and a transmission shaft 53, the transmission shaft 53 has a special-shaped cross section along the axial direction, a special-shaped groove 54 is formed at a joint of the transmission main body 52 and the transmission shaft 53, a special-shaped shaft hole 21 is formed on the shaft center of the breaker handle 20, one end of the transmission shaft 53 is inserted into the special-shaped groove 54 and connected with the transmission main body 52, and the other end is inserted into the special-shaped shaft hole 21 and connected with the.

As shown in fig. 6 and 7, the transmission gear assembly 3 includes a worm 31, a worm wheel 32 and a plurality of reduction gears 33, the worm 31 is fixed or integrally disposed on the output shaft of the motor 2, the worm wheel 32 is engaged with the worm 31, the worm wheel 32 is engaged with the reduction gears 33, and the reduction gears 33 are engaged with the final drive gear 4 after being sequentially engaged. The vertical plane where the center point of the final-stage driving gear 4 is located is used as an interface (B plane), the release part 6 is arranged on one side of the interface, and the center of the reduction gear 33 is arranged on the other side of the interface far away from the release part 6.

When the circuit breaker is used, the motor drives the transmission gear assembly 4 to rotate, so that the final-stage driving gear 7 is driven to rotate anticlockwise or clockwise, the final-stage driving gear 7 drives the transmission piece 5 and the circuit breaker handle 20 to rotate, and when the first boss 41 touches the first detection switch 7, the final-stage driving gear 4 rotates to the middle position. When the tripping shift lever 62 rotates to make the third boss 64 touch the third detection switch 9, the tripping and the opening of the circuit breaker are explained. The two groups of second detection switches 8 are respectively located at two ends of a rotating path of the breaker handle 20 and are respectively used for detecting a switching-on position or a switching-off position.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. Can realize miniature circuit breaker divide-shut brake drive arrangement of accurate detection, set up in miniature circuit breaker casing, its characterized in that: the circuit breaker comprises a circuit board, a motor, a transmission gear assembly, a final-stage driving gear, a transmission part and a position detection switch, wherein the motor is electrically connected with the circuit board, the motor is axially meshed with the transmission gear assembly for transmission, the final-stage driving gear is positioned at the tail end of the transmission gear assembly and meshed with the transmission gear assembly, the transmission part is connected with a breaker handle, the final-stage driving gear, the transmission part and the breaker handle are coaxially arranged, and the final-stage driving gear drives the transmission part to rotate;

2. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 1, wherein: the tripping device comprises a tripping driving rod and a tripping gear lever, the tripping driving rod extends out to be linked with a lock catch of the circuit breaker, and the tripping gear lever is separated from or matched with the final-stage driving gear in an abutting mode.

3. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 2, wherein: the position detection switch further comprises a third detection switch electrically connected with the circuit board, a third boss is arranged on the tripping piece, and the third detection switch is used for detecting the position of the third boss.

4. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 2, wherein: the tripping device comprises a hinged portion, a hinged hole is formed in the middle of the hinged portion, a positioning column for the hinged hole to insert is arranged on the shell, the tripping deflector rod is perpendicular to the hinged portion and integrally arranged, and the tripping baffle rod is integrally connected with the hinged portion.

5. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 4, wherein: the shell is provided with a limiting groove, and the tripping deflector rod penetrates through the limiting groove to be linked with the lock catch of the circuit breaker.

6. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 1, wherein: the driving medium include transmission main part and transmission shaft, the transmission shaft be special-shaped along axial cross-section, the junction of transmission main part and transmission shaft be provided with special-shaped groove, be equipped with special-shaped shaft hole on the circuit breaker handle axle center, transmission shaft one end insert special-shaped groove and be connected with the transmission main part, the other end inserts special-shaped shaft hole and is connected with the circuit breaker handle.

7. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 2, wherein: the transmission gear assembly comprises a worm, a worm wheel and a plurality of reduction gears, the worm is fixedly or integrally arranged on an output shaft of the motor, the worm wheel is meshed with the worm, the worm wheel is meshed with the reduction gears, and the reduction gears are meshed with the final-stage driving gear after being meshed in sequence.

8. The opening and closing driving device of a miniature circuit breaker capable of realizing accurate detection as claimed in claim 7, wherein: the vertical plane of the central point of the final-stage driving gear is used as an interface, the tripping piece is arranged on one side of the interface, and the center of the reduction gear is arranged on the other side of the interface far away from the tripping piece.