CN215377352U

CN215377352U - Miniature circuit breaker electricity behaviour drive mechanism

Info

Publication number: CN215377352U
Application number: CN202121772570.4U
Authority: CN
Inventors: 卢权胜; 赵质胜; 范奇文; 李强; 李巍
Original assignee: Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Electric Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-12-31
Anticipated expiration: 2031-07-30

Abstract

The utility model provides an electric operating transmission mechanism of a miniature circuit breaker, which comprises a motor, a gear transmission structure and an intelligent circuit board, wherein the motor, the gear transmission structure and the intelligent circuit board are arranged in a shell structure, the gear transmission structure comprises a worm, a driven gear set and a driving gear which are sequentially connected, the driving gear drives a handle of the circuit breaker to perform switching-on operation through a driving rod, one end of the driving rod is slidably arranged in a driving groove of the driving gear, and the other end of the driving rod is connected to a rotating button seat of the handle of the circuit breaker in a hooking and abutting mode, by adopting the technical scheme, the transmission distance requirement between the driving gear and the handle is met through the transmission matching of the driving groove and the driving rod, so that the number of the gears can be reduced, the structural design is simple, the occupied space is small, the vibration impact of the handle rotating shaft caused by the vibration of the gear can be avoided to generate the unilateral swinging and damage of the last stage, and the transmission stability and reliability between the electric operating transmission mechanism and the handle are ensured, the setting cost is reduced, and the use performance of the product is improved.

Description

Miniature circuit breaker electricity behaviour drive mechanism

Technical Field

The utility model relates to the technical field of low-voltage electric appliances, in particular to an electric operation transmission mechanism of a miniature circuit breaker.

Background

According to the intelligent requirement of the power supply network in China, a signal at the execution upper end of a terminal execution mechanism, namely a small-sized breaker, of the power supply network needs to have the functions of tripping and closing; especially, the remote control function of automatic tripping for defaulting and automatic closing and power transmission for charging is realized by combining an intelligent ammeter. Therefore, the miniature circuit breaker is required to have an automatic reclosing function, namely, a control signal is transmitted to realize remote control, so that the circuit breaker can automatically close or open, a worker does not need to manually open and close the switch, and manpower and material resources are effectively saved.

The existing intelligent circuit breaker mainly comprises a circuit breaker body and an electric operating device matched with the circuit breaker body, wherein the electric operating device comprises a control circuit board, a motor and a gear transmission mechanism for connecting the motor and a circuit breaker handle, the gear transmission mechanism drives the circuit breaker handle to realize the opening and closing actions of the circuit breaker under the drive of the motor, the gear transmission mechanism is arranged in a plurality of forms, usually comprises a plurality of gear sets which are sequentially meshed, and is connected to a handle transmission shaft of the handle through the sequential meshing of the plurality of gear sets, namely the last-stage circular or fan-shaped gear is arranged on the handle transmission shaft in a linkage manner, and the electric operating device adopting the structural design still has the following problems in practical application that the number of gears is large, the arrangement cost is high, particularly, the last-stage gear is directly arranged on the handle transmission shaft, and the occupied position space is large, the top of the shell can be made higher or larger, and the handle transmission shaft is impacted by the final-stage gear to generate unilateral shaking, so that the handle transmission shaft is easy to damage or even break.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the electric operating device in the prior art is directly arranged on a handle transmission shaft through a final-stage gear, so that the handle transmission shaft is impacted by the final-stage gear to generate single-side shaking, and the use performance of a product is influenced.

In order to solve the technical problem, the utility model provides an electric operation transmission mechanism of a miniature circuit breaker, which comprises a shell structure, a motor, a gear transmission structure and an intelligent circuit board, wherein two cavities are formed in the shell structure, the motor, the gear transmission structure and the intelligent circuit board are arranged in one cavity, the gear transmission structure comprises a worm which is arranged on a rotating shaft of the motor in a linkage manner, a driving gear which is arranged at the upper part of the cavity and is obliquely opposite to a handle of the circuit breaker, and a driven gear set which is connected between the worm and the driving gear in a meshing manner, and the driving gear drives the handle of the circuit breaker to execute a closing operation through a driving rod; be equipped with the drive groove on the drive gear, the one end slidable of actuating lever wears to establish in the drive groove, and its other end colludes to connect on the knob seat of circuit breaker handle, drive gear is in when the drive of motor is carried out down and is closed a floodgate and rotate, drive groove one end promotes the one end of actuating lever makes the actuating lever drives circuit breaker handle carries out the motion of closing a floodgate.

In the electric operating transmission mechanism of the miniature circuit breaker, the driving groove is of an arc-shaped through hole structure, and the breaker handle drives one end of the driving rod to slide towards the other end of the driving groove when in brake-separating motion.

In the electric operating transmission mechanism of the miniature circuit breaker, the rotating button seat is provided with a positioning hole, one end of the driving rod is a driven end which is bent and penetrated through the driving groove, and the other end of the driving rod is a positioning end which is inserted in the positioning hole and forms linkage fit with the handle of the circuit breaker.

In the electric operating transmission mechanism of the miniature circuit breaker, an operating mechanism is arranged in the other cavity of the shell structure, the operating mechanism is provided with a tripping shaft penetrating into the cavity where the gear transmission structure is located, and the gear transmission structure is provided with a tripping structure for driving the tripping shaft to drive the operating mechanism to trip and separate.

In the electric operating transmission mechanism of the miniature circuit breaker, the tripping structure comprises a tripping boss arranged on the side surface of one side of the driving gear, the tripping shaft is positioned on the motion path of the tripping boss, and the driving gear is pushed by the tripping boss to act when the opening brake rotates.

In the electric operating transmission mechanism of the miniature circuit breaker, the tripping boss is arranged at one end of the driving groove and aligned with one end of the driving groove.

In the electric operating transmission mechanism of the miniature circuit breaker, an arc surface is arranged at one end, corresponding to the driving groove, of the side wall of the tripping boss, and the driven end is in matched butt joint with and between the arc surface and one end of the driving groove.

In the electric operating transmission mechanism of the miniature circuit breaker, the shell structure comprises a base and two cover plates connected to two sides of the base, two cavities are formed between the base and the two cover plates in a buckled mode, and an arc-shaped sliding groove for the tripping shaft to slide and penetrate is formed in the base.

Among foretell miniature circuit breaker electricity behaviour drive mechanism be provided with the recess interval on one side of base, drive gear, driven gear group, motor are followed shell structure's direction of height from top to bottom arranges in proper order in the recess interval.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

in the electric operating transmission mechanism of the miniature circuit breaker, when the motor drives the driving gear to perform switching-on rotation through the driven gear set, the driving gear pushes the driving rod to perform synchronous motion through one end of the driving groove, so that the driving rod pushes the handle to perform switching-on motion, and the automatic switching-on operation of the circuit breaker is realized, therefore, the design has the advantages that the driving groove is matched with the driving rod in a transmission way to transmit motion and force between the driving gear and the handle, the transmission distance requirement between the driving gear and the handle is met, meanwhile, the traditional transmission mode of arranging the final stage gear on the rotating shaft of the handle is avoided, the number of the gears can be reduced, the structural design is simple, the occupied space is small, the rotating shaft of the handle can be prevented from generating unilateral shaking and damage influence due to the vibration impact of the final stage gear, and the transmission stability and reliability between the electric operating transmission mechanism and the handle are ensured, the setting cost is reduced, and the use performance of the product is improved.

2. In the electric operating transmission mechanism of the miniature circuit breaker, the tripping boss is arranged at one end of the arc-shaped driving groove, the tripping boss is arranged on the motion path of the tripping boss according to the tripping shaft of the operating mechanism, so that the tripping boss is used for shifting the tripping shaft when the tripping boss rotates along with the opening of the driving gear, an operating assembly is triggered to perform tripping and opening actions, the automatic opening operation of the circuit breaker is realized, the matched transmission is reliable, the tripping speed is high, the design is favorable for realizing the operations of power failure maintenance, arrearage tripping and the like of the circuit breaker, when the tripping boss stays at the tripping position under the driving of the driving gear, the tripping shaft is always in a sliding buckling state under the limitation of the tripping boss, the circuit breaker cannot be closed, the closing operation during the arrearage or the maintenance is prevented, the electric operating transmission mechanism is safe and reliable, only after the maintenance work or the payment is finished, the driving gear drives the tripping boss to reset to move so as to remove the limitation of the tripping shaft, the circuit breaker can normally open and close the brake.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic plan view of an electrically operated transmission mechanism of a miniature circuit breaker according to the present invention;

fig. 2 is a partially enlarged schematic view of an electrically operated transmission mechanism of the miniature circuit breaker shown in fig. 1;

FIG. 3 is a schematic structural view of the trip boss and the drive gear of the present invention;

FIG. 4 is a schematic structural diagram of a base according to the present invention;

description of reference numerals: 1. a motor; 21. a worm; 22. a driven gear set; 23. a drive gear; 3. a drive slot; 4. a drive rod; 41. a driven end; 5. a tripping boss; 51. a circular arc surface; 6. a circuit breaker handle; 61. rotating the button seat; 7. tripping the shaft; 8. a housing structure; 81. a base; 82. a groove interval; 83. an arc-shaped through hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

This embodiment provides a miniature circuit breaker electricity behaviour drive mechanism as shown in fig. 1-4, including inside partition be equipped with two cavitys shell structure 8, and set up motor 1, gear drive structure and intelligent circuit board in one of them cavity, its characterized in that: the gear transmission structure comprises a worm 21 which is arranged on a rotating shaft of the motor 1 in a linkage manner, a driving gear 23 which is arranged on the upper part of the cavity and is obliquely opposite to the breaker handle 6, and a driven gear set 22 which is connected between the worm 21 and the driving gear 23 in a meshing manner, wherein the driving gear 23 drives the breaker handle 6 to execute a switching-on operation through a driving rod 4; be equipped with drive groove 3 on the drive gear 23, the one end slidable of actuating lever 4 wears to establish in drive groove 3, its other end colludes to connect and is in on the knob seat 61 of rotation of circuit breaker handle 6, drive gear 23 is in when the drive of motor 1 is gone down to carry out the combined floodgate rotation, pass through 3 one end in drive groove promotes the one end of actuating lever makes actuating lever 4 drives circuit breaker handle 6 carries out the combined floodgate motion.

In the above embodiment, when the motor 1 drives the driving gear 23 to perform the switching-on rotation through the driven gear set 22, the driving gear 23 pushes the driving rod 4 to perform the synchronous motion through one end of the driving slot 3, so that the driving rod 4 pushes the handle to perform the switching-on motion, thereby implementing the automatic switching-on operation of the circuit breaker, and the design has the advantages that the driving slot 3 and the driving rod 4 are in transmission fit to transmit motion and force between the driving gear 23 and the handle, thereby satisfying the requirement of the transmission distance between the driving gear 23 and the handle, and avoiding the traditional transmission mode of arranging the final gear on the rotating shaft of the handle, thus reducing the number of gears, having simple structural design and small occupied space, avoiding the unilateral shaking and damage influence of the rotating shaft of the handle due to the vibration impact of the final gear, and ensuring the transmission stability and reliability between the electric operation transmission mechanism and the handle, the setting cost is reduced, and the use performance of the product is improved.

As a preferred embodiment, as shown in fig. 2-3, the driving slot 3 is an arc-shaped through hole 83, and the circuit breaker handle 6 drives one end of the driving rod to slide towards the other end of the driving slot 3 during opening movement, so that the manual opening and closing operation of the miniature circuit breaker is not interfered, and the driving rod 4 does not push the driving gear 23 to rotate reversely, thereby protecting the motor 1. The rotating button seat 61 is provided with a positioning hole, one end of the driving rod 4 is a driven end 41 which is bent and penetrated through the driving groove 3, and the other end of the driving rod is a positioning end which is inserted into the positioning hole and forms linkage fit with the breaker handle 6. According to the structure, when the miniature circuit breaker executes manual opening and closing operation through the handle, the positioning end of the connecting rod can move along the arc track along the rotating button seat 61 of the handle, so that the driven end 41 of the connecting rod is driven to slide back and forth along the driving groove 3 of the arc structure, a position space required by the opening and closing movement is provided for the driven end 41 through the driving groove 3, and therefore automatic opening and closing operation of the circuit breaker by the electric operation transmission mechanism is not influenced.

An operating mechanism is arranged in another cavity of the shell structure 8, in order to realize automatic brake-separating operation of the circuit breaker, the operating mechanism is provided with a tripping shaft 7 penetrating into the cavity where the gear transmission structure is arranged, the gear transmission structure is provided with a drive the tripping shaft 7 drives the tripping structure of the operating mechanism to trip and separate brake, and the gear transmission structure triggers through the tripping structure the tripping shaft 7 moves to realize quick tripping and separating brake of the circuit breaker.

The specific arrangement of the trip mechanism is described in detail below with reference to fig. 1-3:

the tripping structure comprises a tripping boss 5 arranged on the side face of one side of the driving gear 23, the tripping shaft 7 is located on a movement path of the tripping boss 5, the driving gear 23 is pushed by the tripping boss 5 to act when the brake is switched off, wherein the tripping boss 5 is arranged at one end of the driving groove 3 and is aligned with one end of the driving groove 3. By adopting the design of the scheme, when the miniature circuit breaker needs to be subjected to brake-off operation, the driving gear 23 is driven by the motor 1 to be subjected to brake-off rotation, so that the tripping boss 5 stirs the tripping shaft 7 along with the brake-off rotation of the driving gear 23, thereby triggering the operation assembly to execute tripping and brake-off actions, realizing automatic brake-off operation of the circuit breaker, being reliable in matching transmission and high in tripping speed, being beneficial to realizing operations such as power failure maintenance and arrearage tripping of the circuit breaker, stopping the tripping boss 5 at a tripping position under the driving of the driving gear 23, leading the tripping shaft 7 to be always in a sliding-buckling state under the limitation of the tripping boss 5, being incapable of the circuit breaker, preventing closing operation during arrearage or maintenance, being safe and reliable, only after completing maintenance work or completing payment, leading the driving gear 23 to drive the tripping boss 5 to reset to move so as to relieve the limitation on the tripping shaft 7, the circuit breaker can normally open and close the brake.

As a preferred embodiment, an arc surface 51 is disposed at one end of the side wall of the trip boss 5 corresponding to the driving groove 3, the driven end 41 is in fit abutment with the arc surface 51 and one end of the driving groove 3, and when the driving gear 23 performs closing rotation, the driven end 41 is subjected to the common abutting action of the arc surface 51 of the trip boss 5 and one end of the driving groove 3, so that the stress is more stable, and the fit transmission is reliable.

In this embodiment, combine fig. 1 and fig. 4 to show, be provided with in housing structure 8 with the inside base 81 that is two cavitys of separating of housing structure 8, be equipped with on the base 81 and supply the arc spout that trip shaft 7 slided and passes, further set up, be provided with between the recess 82 on one side of base 81, drive gear 23, driven gear group 22, motor 1 are followed housing structure 8's direction of height from top to bottom arranges in proper order in between the recess 82, this kind of structural layout occupation space is little, and is integrated in two cavities of a casing with operating device and electric operating transmission mechanism, reduces the product volume, is favorable to promoting the development of circuit breaker product to miniaturized trend.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a miniature circuit breaker electricity behaviour drive mechanism, includes that inside separates shell structure (8) that is equipped with two cavitys to and set up motor (1), gear drive structure and the intelligent line board in one of them cavity, its characterized in that: the gear transmission structure comprises a worm (21) which is arranged on a rotating shaft of the motor (1) in a linkage manner, a driving gear (23) which is arranged on the upper portion of the cavity and is obliquely opposite to the breaker handle (6), and a driven gear set (22) which is connected between the worm (21) and the driving gear (23) in a meshing manner, wherein the driving gear (23) drives the breaker handle (6) to execute a switching-on operation through a driving rod (4); be equipped with on drive gear (23) drive groove (3), the one end slidable of actuating lever (4) wears to establish in drive groove (3), its other end colludes to connect and is in on rotary button seat (61) of circuit breaker handle (6), drive gear (23) are in pass through when the drive of motor (1) is down carried out the combined floodgate rotation drive groove (3) one end promotes the one end of actuating lever (4) makes actuating lever (4) drive circuit breaker handle (6) carry out the motion of combined floodgate.

2. The miniature circuit breaker electrically operated actuator as set forth in claim 1, wherein: the driving groove (3) is of an arc-shaped through hole structure, and the breaker handle (6) drives one end of the driving rod to slide towards the other end of the driving groove (3) during opening movement.

3. The miniature circuit breaker electrically operated actuator as set forth in claim 2, wherein: the rotary button seat (61) is provided with a positioning hole, one end of the driving rod (4) is a driven end (41) which is bent and penetrated through the driving groove (3), and the other end of the driving rod is a positioning end which is inserted into the positioning hole and forms linkage fit with the breaker handle (6).

4. An electrically operated transmission mechanism of a miniature circuit breaker according to any of claims 1-3 wherein: an operating mechanism is arranged in the other cavity of the shell structure (8), the operating mechanism is provided with a tripping shaft (7) penetrating into the cavity where the gear transmission structure is arranged, and the gear transmission structure is provided with a tripping structure for driving the tripping shaft (7) to drive the operating mechanism to trip and open the brake.

5. The miniature circuit breaker electrically operated actuator of claim 4, wherein: the tripping structure comprises a tripping boss (5) arranged on the side face of one side of the driving gear (23), the tripping shaft (7) is located on a movement path of the tripping boss (5), and the driving gear (23) is pushed by the tripping boss (5) to act when the brake is switched off and rotates.

6. The miniature circuit breaker electrically operated actuator of claim 5, wherein: the tripping boss (5) is arranged at one end of the driving groove (3) and aligned with one end of the driving groove (3).

7. The miniature circuit breaker electrically operated actuator of claim 6, wherein: an arc surface (51) is arranged at one end, corresponding to the driving groove (3), of the side wall of the tripping boss (5), and the driven end (41) of the driving rod is in matched abutting connection with the arc surface (51) and one end of the driving groove (3).

8. An electrically operated transmission mechanism of a miniature circuit breaker according to any of claims 5-7 wherein: the inner part of the shell structure (8) is divided into a base (81) with two cavities, and the base (81) is provided with an arc-shaped sliding groove for the tripping shaft (7) to slide through.

9. The miniature circuit breaker electrically operated actuator of claim 8, wherein: be provided with between the recess interval (82) on one side of base (81), drive gear (23), driven gear group (22), motor (1) are followed the direction of height of shell structure (8) from top to bottom arranges in proper order in between the recess interval (82).