Controller of external circuit breaker of electric energy meter

Abstract

The utility model discloses a controller of an external circuit breaker of an electric energy meter, which comprises a shell, an earth leakage protection tripping mechanism, an electric actuating mechanism, a transmission mechanism and a control circuit board, the earth leakage protection tripping mechanism comprises an ejector rod, the electric actuating mechanism comprises a motor, an inner cavity of the shell comprises an upper cavity and a lower cavity, and two ends of the lower cavity protrude outwards relative to two ends of the upper cavity. The upper portion of the upper cavity is provided with a first top wall, the two ends of the upper cavity are provided with first end walls, the two ends of the lower cavity are provided with second end walls, the upper portions of the two ends of the lower cavity are provided with second top walls, the first top walls are provided with reset buttons, and the leakage protection tripping mechanism and the motor are transversely arranged at the two ends of the lower cavity respectively and are close to the lower portions of the two second top walls of the lower cavity respectively. And the transmission mechanism is arranged in a lower cavity area among the upper cavity, the electric leakage protection tripping mechanism and the motor. The utility model has a simple and compact internal structure, and is convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of low voltage electrical, specifically relates to a controller of watt-hour meter external circuit breaker. BACKGROUND

[0002] The controller of watt-hour meter external circuit breaker usually includes a shell, a leakage protection tripping mechanism, an electric actuator, a reset button and a transmission mechanism achieving the function of linkage of opening and closing between the leakage protection module, the electric actuator circuit breaker, the reset button and the circuit breaker, and further includes a control circuit board achieving the control function and other components.

[0003] In the existing watt-hour meter external circuit breaker controller, limited by the internal space of the shell, in order to accommodate all the above components in the shell, a complex structure layout is adopted, especially in some controller products, in order to accommodate more components, the leakage protection tripping mechanism and the electric actuator are usually arranged obliquely, although all the components can be accommodated in the shell, but it also leads to the complex structure layout of the internal components of the shell, and there is little available space, it is difficult to accommodate more components, which also limits the further miniaturization of the controller product, and the complex internal structure also brings many disadvantages to the assembly of the product. UTILITY MODEL CONTENTS

[0004] In view of the above technical problems, the utility model provides a controller of watt-hour meter external circuit breaker, which is simple and compact in internal structure and convenient to assemble.

[0005] The utility model discloses a controller of watt-hour meter external circuit breaker, including the casing, set up in the casing's electric leakage protection tripping mechanism, electric actuating mechanism, transmission mechanism, control circuit board, transmission mechanism is connected with electric leakage protection tripping mechanism and electric actuating mechanism, and transmission mechanism is used for and is connected with circuit breaker, electric leakage protection tripping mechanism and electric actuating mechanism can realize the opening and closing of circuit breaker through transmission mechanism linkage, and electric leakage protection tripping mechanism includes the top rod, and electric actuating mechanism includes the motor, the cavity of casing includes the upper cavity, the lower cavity, and the both ends of lower cavity are outward convex to the both ends of upper cavity, and the upper part of upper cavity has first top wall, and the both ends of upper cavity have the first end wall of vertical, and the both ends of lower cavity have the second end wall of vertical, and the upper part of both ends of lower cavity has the second top wall of horizontal, and first end wall and second top wall are connected, and reset button is movably arranged on first top wall, and reset button is driven to pop up upwards through spring, electric leakage protection tripping mechanism and motor are respectively arranged at the both ends of lower cavity and are respectively close to set up below the two second top walls of lower cavity, and the top rod of electric leakage protection tripping mechanism and the output shaft of motor are arranged towards the intermediate direction of both ends along lower cavity, transmission mechanism is arranged in the lower cavity area between upper cavity and electric leakage protection tripping mechanism and motor, and the internal structure of controller is compact, and electric leakage protection tripping mechanism, electric actuating mechanism and transmission mechanism and other components are concentrated in the upper area of casing cavity, make the lower area of casing cavity keep free, can accommodate other components, and electric leakage protection tripping mechanism and motor adopt horizontal installation mode and are located at the both ends of casing cavity, and transmission mechanism is arranged in the intermediate area of electric leakage protection tripping mechanism and motor, and the structure is simple, and convenient assembly.

[0006] Further, the transmission mechanism includes a swing member swingably disposed on a side wall of the housing, one end of the swing member is provided with a transmission rod, the side wall of the housing is provided with a first through hole for the transmission rod to movably pass through the outside of the housing, the swing member and the top rod of the electric leakage protection tripping mechanism form a transmission cooperation, the transmission rod is connected with a lock catch of an operating mechanism of the circuit breaker through the first through hole of the side wall of the housing, when the electric leakage protection tripping mechanism is triggered due to an electric leakage fault, the swing member is pushed to swing, and the swing member realizes opening control through the transmission rod and the operating mechanism of the circuit breaker.

[0007] Further, the transmission mechanism comprises a transmission member arranged between the top rod of the leakage protection tripping mechanism, the reset button and the swing member, the leakage protection tripping mechanism can drive the transmission member to swing, the transmission member cooperates with the reset button to lock and unlock through swinging, and drives the transmission rod at one end of the swing member to swing towards the opening direction, the reset button cooperates with the transmission member to limit when it is in the pop-up position, so as to prevent the transmission rod at one end of the swing member from swinging towards the closing direction, when the leakage protection tripping mechanism is triggered due to leakage fault, the transmission member will be driven to swing, the transmission member can unlock the reset button at the same time, so that it pops up, and the transmission rod at one end of the swing member is driven to swing towards the opening direction; when the fault is removed, the reset button is not pressed, that is, the reset button is still in the pop-up position, the reset button cooperates with the transmission member to limit, so as to prevent the transmission member from resetting, one end of the swing member cannot swing towards the closing direction due to the limitation of the transmission member, and the circuit breaker cannot normally close; when the reset button is manually pressed, the transmission member resets and relocks the reset button, one end of the swing member can normally swing towards the closing direction without the limitation of the transmission member, and the circuit breaker can normally close.

[0008] Further, the transmission mechanism comprises a transmission mechanism comprising a speed reduction gear set arranged between the output shaft of the motor and the swing member, one end of the speed reduction gear set along the power transmission direction is connected with the output shaft of the motor, and the other end along the power transmission direction cooperates with the swing member to transmit power, the motor can drive the transmission rod at one end of the swing member to swing towards the opening direction through the speed reduction gear set, and can also prevent the transmission rod at one end of the swing member from swinging towards the closing direction.

[0009] Further, the other end of the speed reduction gear set along the power transmission direction is provided with a cam, the motor can drive the cam to rotate through the speed reduction gear set, the other end of the swing member has a pushing part which cooperates with the cam to push and limit, when the cam rotates, the pushing part pushes the transmission rod at one end of the swing member to move towards the opening direction, when the cam remains in the rotating position, the pushing part is limited, so that one end of the swing member cannot move towards the closing direction, thereby preventing the staff from closing the circuit breaker by mistake.

[0010] Further, the shell is provided with a second through hole for the main shaft of the circuit breaker to move in the inside of the shell, a first sector gear for cooperating with the main shaft of the circuit breaker is arranged in the shell, the other end of the reduction gear set in the power transmission direction is provided with a second sector gear, the second sector gear and the first sector gear cooperate to drive, the motor can drive the main shaft of the circuit breaker to rotate to the closing direction through the cooperation of the first sector gear and the second sector gear, the reduction gear set and the motor constitute a one-way transmission cooperation, when the second sector gear is driven to rotate by the motor, the main shaft of the circuit breaker can be driven to rotate to the closing position through the cooperation of the first sector gear, and the first sector gear and the second sector gear can be separated, when the first sector gear and the second sector gear are separated, the main shaft of the circuit breaker is not limited, and the circuit breaker can be manually operated to close and open in this state.

[0011] Further, the control circuit board is arranged in the inner cavity of the shell and located at one side of the leakage protection tripping mechanism, the electric actuator and the transmission mechanism, the shell comprises a blocking wall located below the leakage protection tripping mechanism, the motor and the transmission mechanism, and the whole structure is simple and compact, and the blocking wall can separate the lower region of the inner cavity of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure exploded view of the embodiment of the utility model;

[0013] Figure 2 It is an internal structure view of the embodiment of the utility model;

[0014] Figure 3 It is a shell external structure view of the embodiment of the utility model;

[0015] Figure 4 It is an internal structure view of the embodiment of the utility model;

[0016] Figure 5 It is a structure view of the shell of the embodiment of the utility model;

[0017] Figure 6 It is a cooperation schematic view of the transmission part and the reset button and the leakage protection tripping mechanism of the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The embodiment of the controller of the utility model circuit breaker outside the electric energy meter, such as Figures 1-6As shown, including the shell 1, set in the shell 1 leakage protection tripping mechanism 2, electric actuator, transmission mechanism, control circuit board 3, the transmission mechanism and leakage protection tripping mechanism 2 and electric actuator connected, transmission mechanism for and circuit breaker connected, the leakage protection tripping mechanism 2 and electric actuator can be through the transmission mechanism linkage circuit breaker to achieve opening and closing, leakage protection tripping mechanism 2 includes a top rod 21, electric actuator includes a motor 4, the shell 1 cavity includes a cavity 11, 12, the lower cavity 12 both ends relative to the two ends of the upper cavity 11 outwardly convex, the upper cavity 11 upper part has a first top wall 111, both ends of the upper cavity 11 has a vertical first end wall 112, both ends of the lower cavity 12 has a vertical second end wall 121, both ends of the lower cavity 12 upper part has a horizontal second top wall 122, the first end wall 112 and the second top wall 122 are connected, the first top wall 111 movably provided with a reset button 6, the leakage protection tripping mechanism 2 and motor 4 are respectively transversely arranged at both ends of the lower cavity 12 and are respectively arranged close to the lower side of the two second top walls 122 of the lower cavity 12, the top rod 21 of the leakage protection tripping mechanism 2 and the output shaft 41 of the motor 4 are arranged towards the middle direction of the lower cavity 12 along both ends, the transmission mechanism is arranged in the region of the lower cavity 12 between the upper cavity 11 and the leakage protection tripping mechanism 2 and the motor 4, the internal structure of the controller is compact, the leakage protection tripping mechanism 2, the electric actuator and the transmission mechanism and other components are concentrated in the upper region of the inner cavity of the shell 1, so that the lower region of the inner cavity of the shell 1 is left empty and can accommodate other components, the leakage protection tripping mechanism 2 and the motor 4 are arranged in a transverse manner and are located at both ends of the inner cavity of the shell 1, and the transmission mechanism is arranged in the middle region of the leakage protection tripping mechanism 2 and the motor 4, so that the structure is simple and convenient to assemble.

[0019] The transmission mechanism comprises a swing member 51 swingably arranged on the side wall of the shell 1, one end of the swing member 51 is provided with a transmission rod 511, the side wall of the shell 1 is provided with a first through hole 101 for the transmission rod 511 to movably pass through the outside of the shell 1, the swing member 51 and the top rod 21 of the leakage protection tripping mechanism 2 constitute a transmission cooperation, the transmission rod 511 is connected with the lock catch of the operating mechanism of the circuit breaker through the first through hole 101 of the side wall of the shell 1, when the leakage protection tripping mechanism 2 is triggered due to leakage fault, the swing member 51 is pushed to swing, the swing member 51 triggers the lock catch of the circuit breaker to be unlocked through the transmission rod 511, so that the circuit breaker is opened.

[0020] The transmission mechanism further comprises a transmission member 52 arranged in transmission between the ejector rod 21 of the leakage protection tripping mechanism 2, the reset button 6 and the swing member 51, the leakage protection tripping mechanism 2 can drive the transmission member 52 to swing, the transmission member 52 is locked and unlocked with the reset button 6 through swinging and drives the transmission rod 511 at one end of the swing member 51 to swing towards the opening direction, the reset button 6 is limited with the transmission member 52 in the pop-up position to prohibit the transmission rod 511 at one end of the swing member 51 to swing towards the closing direction, when the leakage protection tripping mechanism 2 is triggered due to the leakage fault, the ejector rod 21 is retracted, which pulls the transmission member 52 to swing, the transmission member 52 exits from the locked position of the reset button 6 while swinging, which can unlock the reset button 6, the reset button 6 is popped up under the action of the spring, at the same time, the transmission member 52 also pushes the transmission rod 511 at one end of the swing member 51 to swing towards the opening direction when swinging; when the fault is removed, the ejector rod 21 of the leakage protection tripping mechanism 2 is reset towards the extension direction, when the reset button 6 is not pressed, i.e. the reset button 6 is still in the pop-up position, the side of the reset button 6 limits the swing of the transmission member 52 towards the reset button 6 for resetting, one end of the swing member 51 cannot swing towards the closing direction due to the limitation of the transmission member 52, since the lock of the circuit breaker cannot be normally locked, the circuit breaker cannot be normally closed; when the reset button 6 is manually pressed, the transmission member 52 resets and relocks the reset button 6, the transmission member 52 is removed from the movement path of the swing member 51, one end of the swing member 51 is not limited by the transmission member 52 and can normally swing towards the closing direction, the circuit breaker can normally be closed.

[0021] The transmission mechanism comprises a reduction gear set 53 arranged in transmission between the output shaft 41 of the motor 4 and the swing member 51, the reduction gear set 53 comprises three double gears which are sequentially meshed, one end of the reduction gear set 53 along the power transmission direction is connected with the output shaft 41 of the motor 4, the other end along the power transmission direction is in transmission cooperation with the swing member 51, the motor 4 can drive the transmission rod 511 at one end of the swing member 51 to swing towards the opening direction through the reduction gear set 53, which can cooperate to realize the remote control of the opening of the circuit breaker and can also prohibit the transmission rod 511 at one end of the swing member 51 to swing towards the closing direction, so that the manual closing operation of the circuit breaker is prohibited when the electric actuator is in the opening control state.

[0022] A cam 54 is provided at the other end of the reduction gear set 53 along the power transmission direction. The motor 4 can drive the cam 54 to rotate through the reduction gear set 53. The other end of the swing member 51 has a pushing part 512 that cooperates with the cam 54 to push and limit. When the cam 54 rotates, it pushes the transmission rod 511 at one end of the swing member 51 to move in the opening direction through the pushing part 512. The circuit breaker is opened by linking the transmission rod 511 with the latch. When the cam 54 is held in the rotation position, it will limit the pushing part 512, so that one end of the swing member 51 cannot move in the closing direction, thereby preventing the operator from performing the closing operation incorrectly.

[0023] The housing 1 has a second through hole 102 for the main shaft of the circuit breaker to movably pass through the inner side of the housing 1. Inside the housing 1 is a first sector gear 55 for fixing and engaging with the main shaft of the circuit breaker. A second sector gear 56 is provided at the other end of the reduction gear set 53 along the power transmission direction. The second sector gear 56 and the first sector gear 55 engage for transmission. The motor 4 can drive the main shaft of the circuit breaker to rotate in the closing direction through the engagement of the first sector gear 55 and the second sector gear 56. The reduction gear set 53 and the motor 4 form a unidirectional transmission engagement. In this embodiment, the output shaft of the motor 4... The 41 and the reduction gear set 53 form a one-way transmission connection through a worm gear and a worm. When the second sector gear 56 is driven to rotate by the motor 4, it can drive the main shaft of the circuit breaker to rotate to the closed position through the cooperation with the first sector gear 55. After the first sector gear 55 rotates, it can also separate the first sector gear 55 and the second sector gear 56. When the first sector gear 55 and the second sector gear 56 are separated, there is no restriction on the rotation of the main shaft of the circuit breaker. In this state, the circuit breaker can be manually operated to open and close, and it will not affect the automatic opening of the circuit breaker in the event of leakage, short circuit, etc.

[0024] like Figure 1 As shown, the control circuit board 3 is arranged inside the cavity of the housing 1 and is located on one side of the leakage current protection tripping mechanism 2, the electric actuator, and the transmission mechanism. The housing 1 includes a baffle 13 located below the leakage current protection tripping mechanism 2, the motor 4, and the transmission mechanism. The overall structure is simple and compact, and the baffle 13 can separate the lower area of ​​the cavity of the housing 1. The control circuit board 3 integrates remote control functions, leakage current protection functions, and other related circuits. The space below the baffle 13 can be used to arrange wiring or remote signal transceiver modules and other components.

[0025] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A controller of an external circuit breaker of an electric energy meter, comprising a housing, an electric leakage protection tripping mechanism, an electric actuator, a transmission mechanism, a control circuit board arranged in the housing, the transmission mechanism being connected with the electric leakage protection tripping mechanism and the electric actuator and used for driving the circuit breaker to open and close, the electric leakage protection tripping mechanism comprising a top rod, the electric actuator comprising an electric motor, an inner cavity of the housing comprising an upper cavity and a lower cavity, two ends of the lower cavity being outwardly protruded relative to two ends of the upper cavity, the upper cavity having a first top wall at an upper portion thereof, two ends of the upper cavity having vertically arranged first end walls, two ends of the lower cavity having vertically arranged second end walls, two ends of the lower cavity having horizontally arranged second top walls at upper portions thereof, the first end walls being connected with the second top walls, and a reset button being arranged on the first top wall and being capable of being popped out, characterized in that: the reset button is arranged on the first top wall and is capable of being popped out. The leakage protection tripping mechanism and the motor are horizontally arranged at two ends of the lower cavity and are arranged close to the lower side of the two second top walls of the lower cavity, the top rod of the leakage protection tripping mechanism and the output shaft of the motor are arranged towards the middle direction of the two ends of the lower cavity, and the transmission mechanism is arranged in the region of the lower cavity between the upper cavity and the leakage protection tripping mechanism and the motor.

2. The controller of claim 1, wherein: The transmission mechanism comprises a swing member swingably arranged on the side wall of the shell, one end of the swing member is provided with a transmission rod, the side wall of the shell is provided with a first through hole for the transmission rod to move, and the swing member and the top rod of the leakage protection tripping mechanism form a transmission cooperation.

3. The controller of claim 2, wherein: The transmission mechanism comprises a transmission member arranged between the top rod of the leakage protection tripping mechanism, the reset button and the swing member, the leakage protection tripping mechanism can drive the transmission member to swing, the transmission member forms locking and unlocking cooperation with the reset button through swinging, and the transmission member drives the transmission rod at one end of the swing member to swing towards the opening direction through swinging.

4. The controller of claim 2, wherein: The transmission mechanism comprises a reduction gear set arranged between the output shaft of the motor and the swing member, one end of the reduction gear set along the power transmission direction is connected with the output shaft of the motor, the other end along the power transmission direction forms transmission cooperation with the swing member, the motor can drive the transmission rod at one end of the swing member to swing towards the opening direction through the reduction gear set, and the transmission rod at one end of the swing member can also be prevented from swinging towards the closing direction.

5. The controller of claim 4, wherein: The other end of the reduction gear set along the power transmission direction is provided with a cam, the motor can drive the cam to rotate through the reduction gear set, the other end of the swing member has a pushing part which forms pushing and limiting cooperation with the cam.

6. The controller of an off-premises circuit breaker of an electric energy meter according to claim 4, characterized in that: The shell is provided with a second through hole for the main shaft of the circuit breaker to move in the inside of the shell, a first sector gear is arranged in the shell for cooperation and fixation with the main shaft of the circuit breaker, the other end of the reduction gear set along the power transmission direction is provided with a second sector gear, the second sector gear and the first sector gear form transmission cooperation, the motor can drive the main shaft of the circuit breaker to rotate towards the closing direction through the cooperation of the first sector gear and the second sector gear, and the reduction gear set and the motor form one-way transmission cooperation.

7. The controller of an off-premises circuit breaker of an electric energy meter according to claim 1, characterized in that: The control circuit board is arranged in the inner cavity of the shell and is located on one side of the leakage protection tripping mechanism, the electric actuator and the transmission mechanism, and the shell comprises a blocking wall located below the leakage protection tripping mechanism, the motor and the transmission mechanism.

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