CN215377351U - Miniature circuit breaker electricity behaviour handle resetting means - Google Patents
Miniature circuit breaker electricity behaviour handle resetting means Download PDFInfo
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- CN215377351U CN215377351U CN202121550717.5U CN202121550717U CN215377351U CN 215377351 U CN215377351 U CN 215377351U CN 202121550717 U CN202121550717 U CN 202121550717U CN 215377351 U CN215377351 U CN 215377351U
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Abstract
The utility model discloses an electric operating handle resetting device of a miniature circuit breaker, wherein a turbine and a primary speed change gear are integrated and coaxial, and a worm, the primary speed change gear and a secondary speed change gear form a meshing relationship; the second-stage speed change gear and the half gear are integrated and coaxial, the second-stage speed change gear and the rotary push rod are coaxial, and the half gear and the rotary push rod are fixed with each other; when the half-teeth move, the half-teeth of the handle are driven to do corresponding movement, so that the handle of the circuit breaker part realizes switching-on and switching-off operation; the handle half-tooth and the free reset piece are coaxial, and the free reset piece is used for realizing free fine adjustment and reset of an angle when the initial angle cannot be accurately reset at the switching-off position of the handle. When the matched handle opening position has deviation, and the handle return spring of the circuit breaker can not enable the handle half-tooth connected with the handle to accurately return to the initial angle, the angle is freely finely adjusted through the free return piece, so that the handle half-tooth is returned, and the reliability of the whole set of device is improved.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to an electric operating handle resetting device of a miniature circuit breaker.
Background
The miniature circuit breaker is a terminal protection electric appliance widely used in a building electric terminal distribution device, can connect, bear and break current under normal circuit conditions, can also connect, bear certain time and break current under specified abnormal circuit conditions, is used for single-phase and three-phase short circuit, overload, overvoltage and other protection below 125A, and comprises four types of single pole 1P, two pole 2P, three pole 3P, four pole 4P and the like.
The miniature circuit breaker is composed of an operating device, contacts, a protection device (various releases), an arc extinguishing system and the like. The main contact is manually operated or electrically switched on, and after the main contact is switched on, the main contact is locked at a switching-on position by a free tripping device. The miniature circuit breaker includes a pivoting operating handle that extends through an opening in the circuit breaker housing to facilitate manual operation. When the circuit breaker is normally operated, the handle is positioned at one end of the allowed travel at the closing position (On), when the operating handle is moved to the position, the circuit breaker cannot automatically trip, and the contact of the circuit breaker is closed, so that current flows from a power supply to a connected circuit; at the other end of the handle travel is the Off position (Off) to which the contacts of the circuit breaker are separated when the handle is moved.
The inventor finds that when the miniature circuit breaker in the prior art is in the handle opening position, the return spring of the handle of the circuit breaker can not accurately return the half tooth of the handle connected with the handle to the initial angle every time, so that the reliability of the device is reduced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims to solve the technical problem of providing a miniature circuit breaker electric operating handle resetting device to solve the problem of low reliability of the device in the prior art because a circuit breaker handle resetting spring cannot enable half teeth of a handle connected with the handle to accurately return to an initial angle when the handle is in a switching-off position.
(II) technical scheme
In order to achieve the aim, the utility model provides a resetting device of an electric operating handle of a miniature circuit breaker, which comprises a turbine (1), a primary speed change gear (2), a secondary speed change gear (3), a half-gear (4), a rotary push rod (5), a tripping deflector rod (6), a tripping shaft (7), a handle half-gear (8) and a free resetting piece (9);
the turbine (1) and the first-stage speed change gear (2) are integrated and coaxial, and the turbine (1), the first-stage speed change gear (2) and the second-stage speed change gear (3) form a meshing relation; the two-stage speed change gear (3) and the half-tooth (4) are integrated and coaxial, the two-stage speed change gear (3) and the rotary push rod (5) are coaxial, and the half-tooth (4) and the rotary push rod (5) are fixed with each other; the tripping deflector rod (6) is an independent component and can rotate along the shaft hole, and the tripping shaft (7) is fixed on the tripping deflector rod (6);
when the half-teeth (4) move, the handle half-teeth (8) are driven to move correspondingly, so that the handle of the circuit breaker part realizes switching-on and switching-off operation; handle half tooth (8) and freely reset piece (9) coaxial, freely reset piece (9) and be used for when the handle separating brake position can not accurate return to initial angle, realize the free fine setting of angle and reset.
Wherein, the half-tooth (4) and the rotary push rod (5) are mutually fixed through the matching of a square shaft.
The tripping shaft (7) is tightly matched with the tripping deflector rod (6).
The rotary push rod (5) and the concave arc-shaped surface of the tripping deflector rod (6) form a master-slave movable fit through the convex arc-shaped surface of the head part, and the master-slave movable fit is used for enabling the position of the tripping shaft (7) to be switched between an initial position and a tripping position.
When the rotating push rod (5) is in contact with the tripping shifting rod (6), the half-tooth (4) and the handle half-tooth (8) are not meshed, and the handle half-tooth (8) and the free reset piece (9) are in original positions.
When the tripping shifting rod (6) reaches the maximum descending position, the half-tooth (4) and the handle half-tooth (8) are not meshed, and the handle half-tooth (8) and the free reset piece (9) are in the original positions.
When the rotating push rod (5) moves to the lowest edge of a contact surface of the tripping deflector rod (6), the half-tooth (4) and the handle half-tooth (8) are not meshed, and the handle half-tooth (8) and the free reset piece (9) are in original positions.
Wherein, rotatory push rod (5) begin with when tripping driving lever (6) realize the separation, tripping driving lever (6) reply initial position under reset spring's effect, the circuit breaker state is for allowing the combined floodgate state, at this moment half tooth (4) and handle half tooth (8) take place the meshing, promote handle half tooth (8) and freely reset piece (9) along axle center rotary motion, until the circuit breaker handle reaches the combined floodgate position, the circuit breaker realizes closing.
When the tripping deflector rod (6) reaches the maximum descending position and the handle opening position cannot enable the handle half-tooth (8) to accurately return to the initial angle, the free reset piece (9) achieves free fine adjustment of the angle, so that the handle half-tooth (8) is reset.
(III) advantageous effects
Compared with the prior art, the utility model has the following beneficial effects:
when the matched handle opening position of the miniature circuit breaker electric operating handle resetting device deviates and the handle half-tooth connected with the handle cannot be accurately reset to the initial angle by the circuit breaker handle resetting spring, the angle is freely finely adjusted by the free resetting piece, so that the handle half-tooth is reset, and the reliability of the whole set of device is improved.
Drawings
Fig. 1 is a perspective view of an electrical handle resetting device of a miniature circuit breaker according to an embodiment of the present invention.
Fig. 2 is a front view of an electrical handle resetting apparatus for a miniature circuit breaker according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the present invention when the rotary push rod starts to contact the trip lever.
Fig. 4 is a schematic structural diagram of the trip lever of the present invention when it reaches the maximum down position.
Fig. 5 is a schematic structural diagram of the present invention when the rotary push rod moves to the lowest edge of the contact surface with the trip lever.
Fig. 6 is a schematic view of the present invention in the configuration where the first tooth of the half tooth and the first tooth of the handle half tooth are engaged.
Fig. 7 is a schematic view of the configuration of the last tooth of the half-tooth and the last tooth of the handle half-tooth of the present invention as they disengage after rotation to the end.
Fig. 8 and 9 are schematic structural views of the handle half-tooth and the free reset piece of the utility model when the handle half-tooth and the free reset piece are returned to the initial positions.
Wherein, 1 turbine, 2 first-stage change gears, 3 second-stage change gears, 4 half-teeth, 5 rotating push rods, 6 tripping deflector rods, 7 tripping shafts, 8 handle half-teeth and 9 free reset pieces.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
Example 1
The structure of the resetting device of the electric operating handle of the miniature circuit breaker is shown in figures 1 and 2, and the resetting device comprises a turbine 1, a primary speed-changing gear 2, a secondary speed-changing gear 3, a half-tooth 4, a rotary push rod 5, a tripping shift lever 6, a tripping shaft 7, a handle half-tooth 8 and a free resetting piece 9.
The turbine 1 and the first-stage speed change gear 2 are integrated and coaxial, and the turbine 1, the first-stage speed change gear 2 and the second-stage speed change gear 3 form a meshing relationship; the secondary speed-changing gear 3 and the half-gear 4 are integrated and coaxial, the secondary speed-changing gear 3 and the rotary push rod 5 are coaxial, and the half-gear 4 and the rotary push rod 5 are fixed with each other; the tripping deflector rod 6 is an independent component and can rotate along the shaft hole, and the tripping shaft 7 is fixed on the tripping deflector rod 6.
When the half-teeth 4 move, the handle half-teeth 8 are driven to move correspondingly, so that the handle of the circuit breaker part realizes switching-on and switching-off operation; handle half tooth 8 and the spare 9 coaxial axle center that freely resets, the spare 9 that freely resets is used for when the handle separating brake position can not reply initial angle to the accuracy, realizes freely finely tuning of angle and resets.
In this embodiment, the half-tooth 4 and the rotary push rod 5 are fixed to each other by a square shaft fit, the trip shaft 7 and the trip shift lever 6 are tightly fitted, and the rotary push rod 5 forms a driving-driven fit with a concave arc surface of the trip shift lever 6 through a convex arc surface of a head portion, so as to enable a position of the trip shaft 7 to be switched between an initial position and a trip position.
Example 2
The embodiment specifically describes the movement process of the miniature circuit breaker electric operating handle resetting device:
firstly, when the turbine 1 and the first-stage speed change gear 2 rotate together, the second-stage speed change gear 3, the half-tooth 4 and the rotary push rod 5 are driven to rotate along the axis, the rotary push rod 5 starts to contact with the tripping deflector rod 6, the tripping shaft 7 is at the initial position at the moment, the half-tooth 4 and the handle half-tooth 8 are not meshed, and the handle half-tooth 8 and the free resetting piece 9 are also at the initial position. At this time, the state of the resetting device of the electric handle of the miniature circuit breaker is shown in fig. 3.
And secondly, when the turbine 1 and the first-stage speed change gear 2 continue to rotate, the second-stage speed change gear 3, the half-gear 4 and the rotary push rod 5 are driven to continue to rotate along the axes, the rotary push rod 5 pushes the tripping deflector rod 6 to continue to move along the respective axes until the tripping deflector rod 6 reaches the maximum descending position, at the moment, the tripping shaft 7 is positioned at the tripping position and is locked, the half-gear 4 and the handle half-gear 8 are not meshed, and the handle half-gear 8 and the free resetting piece 9 are also positioned at the original position. At this time, the state of the resetting device of the electric handle of the miniature circuit breaker is shown in fig. 4.
Thirdly, when the turbine 1 and the first-stage speed change gear 2 continue to rotate, the second-stage speed change gear 3, the half-gear 4 and the rotary push rod 5 are driven to continue to rotate along the axes, the rotary push rod 5 pushes the tripping shift lever 6 to continue to move along the respective axes, the rotary push rod 5 moves until the lowest edge of a contact surface with the tripping shift lever 6, at the moment, the tripping shift lever 6 and the tripping shaft 7 are still kept at the maximum descending position, the tripping shaft 7 is not displaced due to the movement of the rotary push rod 5, the tripping shaft 7 is still at the tripping position and is locked, the half-gear 4 and the handle half-gear 8 are not meshed, and the handle half-gear 8 and the free reset piece 9 are also at the original positions. At this time, the state of the resetting device of the electric handle of the miniature circuit breaker is shown in fig. 5.
Fourthly, the method comprises the following steps: the turbine 1 and the first-stage speed change gear 2 continue to rotate to drive the second-stage speed change gear 3, the half-gear 4 and the rotary push rod 5 to continue to rotate along the axis, the rotary push rod 5 is separated from the tripping deflector rod 6, the tripping deflector rod 6 returns to the initial position under the action of the reset spring, the state of the circuit breaker is in a state of allowing switching-on, the first tooth of the half-gear 4 is meshed with the first tooth of the handle half-gear 8, and the handle half-gear 8 and the free reset piece 9 start to be pushed to rotate along the axis. At this time, the state of the resetting device of the electric handle of the miniature circuit breaker of the present invention is shown in fig. 6.
Fifthly: the turbine 1 and the first-stage speed change gear 2 continue to rotate to drive the second-stage speed change gear 3, the half-gear 4 and the rotary push rod 5 to continue to rotate along the axis, the rotary push rod 5 is separated from the tripping driving rod 6, the tripping driving rod 6 returns to the initial position under the action of the reset spring, the state of the circuit breaker is in a state of allowing switching on, the last tooth of the half-gear 4 and the last tooth of the handle half-gear 8 are separated after rotating to the end, the handle of the circuit breaker reaches the switching-on position, and the circuit breaker achieves switching on. At this time, the state of the resetting device of the electric handle of the miniature circuit breaker of the present invention is shown in fig. 7.
Sixthly, the method comprises the following steps: the turbine 1 and the first-stage speed change gear 2 continue to rotate to drive the second-stage speed change gear 3, the half-gear 4 and the rotary push rod 5 to continue to rotate along the axis, the rotary push rod 5 pushes the tripping shifting rod 6 to move along the respective axis until the tripping shifting rod 6 reaches the maximum descending position, the tripping shaft 7 is positioned at the tripping position and locked, the handle half-gear 8 and the free reset piece 9 are reset to the initial position under the action of a reset spring of the breaker handle, and when the handle opening position cannot enable the handle half-gear 8 to accurately reset to the initial angle, free fine adjustment reset of the angle can be realized through the free reset piece 9. At this time, the state of the resetting device of the electric handle of the miniature circuit breaker of the present invention is shown in fig. 8 and 9.
When the matched handle opening position of the miniature circuit breaker electric operating handle resetting device deviates and the handle half-tooth connected with the handle cannot be accurately reset to the initial angle by the circuit breaker handle resetting spring, the angle is freely finely adjusted by the free resetting piece, so that the handle half-tooth is reset, and the reliability of the whole set of device is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A miniature circuit breaker electric operation handle resetting device is characterized in that the device comprises a turbine (1), a primary speed change gear (2), a secondary speed change gear (3), a half-gear (4), a rotary push rod (5), a tripping deflector rod (6), a tripping shaft (7), a handle half-gear (8) and a free resetting piece (9);
the turbine (1) and the first-stage speed change gear (2) are integrated and coaxial, and the turbine (1), the first-stage speed change gear (2) and the second-stage speed change gear (3) form a meshing relation; the two-stage speed change gear (3) and the half-tooth (4) are integrated and coaxial, the two-stage speed change gear (3) and the rotary push rod (5) are coaxial, and the half-tooth (4) and the rotary push rod (5) are fixed with each other; the tripping deflector rod (6) is an independent component and can rotate along the shaft hole, and the tripping shaft (7) is fixed on the tripping deflector rod (6);
when the half-teeth (4) move, the handle half-teeth (8) are driven to move correspondingly, so that the handle of the circuit breaker part realizes switching-on and switching-off operation; handle half tooth (8) and freely reset piece (9) coaxial, freely reset piece (9) and be used for when the handle separating brake position can not accurate return to initial angle, realize the free fine setting of angle and reset.
2. The miniature circuit breaker electrically operated handle reset device according to claim 1, wherein the half-tooth (4) and the rotary push rod (5) are fixed to each other by square shaft fitting.
3. The miniature circuit breaker electrically operated handle reset device according to claim 1, wherein the trip shaft (7) and the trip lever (6) are tightly fitted.
4. The miniature circuit breaker electrically operated handle resetting device according to claim 1, wherein the rotary push rod (5) forms a master-slave motion fit with the concave arc surface of the trip lever (6) through the convex arc surface of the head for shifting the position of the trip shaft (7) between the initial position and the trip position.
5. The miniature circuit breaker electrically operated handle reset device according to any of claims 1 to 4, wherein when the rotating push rod (5) is brought into contact with the trip dog (6), the half-tooth (4) and the half-tooth (8) of the handle are not engaged, and the half-tooth (8) of the handle and the free reset member (9) are in the original position.
6. The miniature circuit breaker electrically operated handle reset device according to claim 5, wherein the half-tooth (4) and the half-tooth (8) of the handle are not engaged when the trip lever (6) reaches the maximum downward position, and the half-tooth (8) of the handle and the free reset member (9) are in the original position.
7. The miniature circuit breaker electrically operated handle reset device according to claim 6, wherein when the rotating push rod (5) moves to the lowest edge of the contact surface with the tripping lever (6), the half-tooth (4) and the half-tooth (8) of the handle are not engaged, and the half-tooth (8) of the handle and the free reset member (9) are in the original position.
8. The miniature circuit breaker electrically operated handle resetting device according to claim 7, wherein when the rotating push rod (5) starts to separate from the tripping shift rod (6), the tripping shift rod (6) returns to the initial position under the action of the reset spring, the state of the circuit breaker is the state of allowing to close the switch, at the moment, the half tooth (4) and the half handle tooth (8) are engaged, the half handle tooth (8) and the free reset piece (9) are pushed to rotate along the axis, and the circuit breaker is closed until the handle of the circuit breaker reaches the switch-on position.
9. The miniature circuit breaker electrically operated handle reset device according to claim 8, wherein when the trip lever (6) reaches the maximum downward position and the handle trip position cannot return the handle half-tooth (8) to the initial angle precisely, the free reset member (9) realizes the free fine adjustment of the angle to reset the handle half-tooth (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121550717.5U CN215377351U (en) | 2021-07-09 | 2021-07-09 | Miniature circuit breaker electricity behaviour handle resetting means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121550717.5U CN215377351U (en) | 2021-07-09 | 2021-07-09 | Miniature circuit breaker electricity behaviour handle resetting means |
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| CN215377351U true CN215377351U (en) | 2021-12-31 |
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| CN202121550717.5U Active CN215377351U (en) | 2021-07-09 | 2021-07-09 | Miniature circuit breaker electricity behaviour handle resetting means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117219476A (en) * | 2023-11-07 | 2023-12-12 | 南京飞腾电子科技有限公司 | High-safety automatic reset circuit breaker |
-
2021
- 2021-07-09 CN CN202121550717.5U patent/CN215377351U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117219476A (en) * | 2023-11-07 | 2023-12-12 | 南京飞腾电子科技有限公司 | High-safety automatic reset circuit breaker |
| CN117219476B (en) * | 2023-11-07 | 2024-01-05 | 南京飞腾电子科技有限公司 | High-safety automatic reset circuit breaker |
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