Electric operating mechanism

Abstract

The utility model relates to an electric operating mechanism, which comprises a shell, a mechanism frame, an electric operating assembly and a control circuit board assembly, the shell comprises an outer shell and an upper cover, a first accommodating cavity is formed between the mechanism frame and the outer shell, the electric operating assembly is arranged in the first accommodating cavity, a second accommodating cavity is formed between the outer shell and the upper cover, and the control circuit board assembly is arranged in the second accommodating cavity. The control circuit board assembly is arranged in the second containing cavity, the electric operation assembly comprises a motor, a gear box, a manual operation shaft, a transmission gear, a cam in linkage fit with the manual operation shaft and a sliding block, the control circuit board assembly comprises a control circuit board, a first microswitch and a second microswitch, and the manual operation shaft is provided with a switch-on and switch-off indicating piece. The opening and closing indicating piece acts along with the manual operation shaft and triggers the first microswitch and the second microswitch, and connection or disconnection of the first microswitch and the second microswitch is achieved. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly, safety and reliability.

Description

Technical Field

[0001] The utility model specifically relates to an electric operating mechanism. Background Art

[0002] A circuit breaker is a distribution device used in a power grid. It can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry and disconnect current for a certain period of time under specified abnormal conditions (such as overload, short circuit, undervoltage and single-phase grounding fault). The electric operating mechanism is a special accessory for molded case circuit breakers. After being matched with the circuit breaker, it can remotely close, disconnect and re-lock the circuit breaker to achieve centralized and automatic control of the transmission and distribution network. With the development of the power industry, the operating mechanism of the molded case circuit breaker has gradually become the mainstream of current development, and the design is developing towards miniaturization and intelligence. The electric operating mechanism includes a mechanism frame, a shell arranged on the mechanism frame, an electric operating component arranged on the mechanism frame, and a control circuit board component. The internal structure layout of the existing electric operating mechanism is relatively chaotic, and the electric operating component and the control circuit board component are not separated in an independent space, which greatly affects the working reliability of the electric operating mechanism, is not conducive to the modular assembly of the electric operating mechanism, and has low assembly efficiency. Summary of the invention

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide an electric operating mechanism with simple structure, stable and reliable performance, convenient assembly, and safety and reliability.

[0004] To achieve the above-mentioned purpose, the utility model adopts an electric operating mechanism, including a shell, a mechanism frame arranged in the shell, an electric operating component arranged on the mechanism frame, and a control circuit board component. The shell includes a shell arranged on the mechanism frame and covering the electric operating component, and an upper cover arranged on the shell. A first accommodating cavity is formed between the mechanism frame and the shell, the electric operating component is arranged in the first accommodating cavity, a second accommodating cavity is formed between the shell and the upper cover, and the control circuit board component is arranged in the second accommodating cavity. The electric operating component includes a motor arranged on the mechanism frame, and a gear that cooperates with the motor. A wheel box, a manual operating shaft rotatably arranged on a mechanism frame, a transmission gear arranged on the manual operating shaft and cooperating with the gear box, a cam cooperating with the manual operating shaft, and a slider cooperating with the cam and used to drive the circuit breaker handle to perform opening and closing actions. The control circuit board assembly includes a control circuit board arranged in a shell, a first micro switch and a second micro switch respectively arranged on the control circuit board, an opening and closing indicator is arranged on the manual operating shaft, and the opening and closing indicator moves with the manual operating shaft and triggers the first micro switch and the second micro switch, and realizes the connection or disconnection of the first micro switch and the second micro switch.

[0005] The beneficial effects of the above structure are: the electric operation assembly and the control circuit board assembly are respectively arranged in the first accommodating cavity and the second accommodating cavity, and the electric operation assembly and the control circuit board assembly are separated in independent cavities, which is conducive to the modular assembly of the electric operation mechanism, and the assembly efficiency is higher, and the working reliability of the electric operation mechanism can be guaranteed, and the first micro switch and the second micro switch are triggered by the opening and closing indicator, and the first micro switch and the second micro switch are integrated on the control circuit board, which can reliably monitor the working state of the electric operation mechanism. Therefore, the electric operation mechanism has the advantages of simple structure, stable and reliable performance, convenient assembly, and safety and reliability.

[0006] In particular, the switch-on / off indicator has an indicator plate at one end, an indicator hole is provided on the upper cover at a position corresponding to the indicator plate, a handle hole is provided on the manual operating shaft and exposed outside the indicator plate, a manual operating hole is provided on the upper cover at a position corresponding to the handle hole, and the switch-on / off indicator has a sleeve portion matched with the manual operating shaft at the other end, the sleeve portion is engaged with the manual operating shaft, and a snap fit between the sleeve portion and the manual operating shaft is formed. The switch-on / off indicator and the manual operating shaft are assembled in a snap fit manner, thereby facilitating the assembly of the switch-on / off indicator and the manual operating shaft, and achieving higher assembly efficiency.

[0007] In particular, the indicator plate is provided with a protrusion matched with the first micro switch, the protrusion moves with the indicator plate and triggers the first micro switch, and the first micro switch is turned on or off, and the outer wall of the sleeve portion is provided with a convex block matched with the second micro switch, the convex block moves with the sleeve portion and triggers the second micro switch, and the second micro switch is turned on or off. The opening and closing indicator triggers the first micro switch and the second micro switch respectively through the protrusion and the convex block, thereby ensuring that the opening and closing indicator can reliably trigger the first micro switch and the second micro switch, which is beneficial to improving the working reliability of the electric operating mechanism.

[0008] In particular, a partition is provided in the housing, and receiving grooves are provided on the partition corresponding to the gear box and the transmission gear, respectively. The receiving grooves cover the gear box and the transmission gear, and a through hole is provided on the partition corresponding to the manual operating shaft, and one end of the manual operating shaft passes through the through hole and extends into the second receiving cavity. The partition can separate the electric operating assembly and the control circuit board assembly in an independent space, thereby ensuring the working reliability of the electric operating mechanism.

[0009] In particular, the partition is provided with a plurality of support columns at locations corresponding to the control circuit board, the control circuit board is provided on the plurality of support columns, the control circuit board is provided with communication terminals and wiring terminals, and the shell is provided with wiring holes at locations corresponding to the communication terminals and wiring terminals. The control circuit board is fixed on the plurality of support columns of the partition, thereby facilitating the modular assembly of the control circuit board module and the shell, and achieving higher assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a stereoscopic diagram of an embodiment of the utility model from a first viewing angle.

[0011] Figure 2 This is a stereoscopic diagram from a second viewing angle of an embodiment of the utility model.

[0012] Figure 3 This is an exploded view of an embodiment of the utility model.

[0013] Figure 4 This is an internal structure diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] like Figures 1 to 4 As shown, the embodiment of the utility model is an electric operating mechanism, including a shell 10, a mechanism frame 11 arranged in the shell 10, an electric operating component 20 arranged on the mechanism frame 11, and a control circuit board component 30. The shell 10 includes a shell 101 arranged on the mechanism frame 11 and covering the electric operating component 20, and an upper cover 102 arranged on the shell 101. A first accommodating cavity 1000 is formed between the mechanism frame 11 and the shell 101. The electric operating component 20 is arranged in the first accommodating cavity 1000. A second accommodating cavity 1001 is formed between the shell 101 and the upper cover 102. The control circuit board component 30 is arranged in the second accommodating cavity 1001. The electric operating component 20 includes a motor 21 arranged on the mechanism frame 11, and a motor 21 and a control circuit board component 30. 1, a manual operating shaft 23 rotatably arranged on the mechanism frame 11, a transmission gear 24 arranged on the manual operating shaft 23 and cooperating with the gear box 22, a cam 25 cooperating with the manual operating shaft 23, and a slider 26 cooperating with the cam 25 and used to drive the circuit breaker handle to perform opening and closing actions. The control circuit board assembly 30 includes a control circuit board 31 arranged in the housing 101, a first micro switch 32 and a second micro switch 33 respectively arranged on the control circuit board 31, and an opening and closing indicator 27 is arranged on the manual operating shaft 23. The opening and closing indicator 27 moves with the manual operating shaft 23 and triggers the first micro switch 32 and the second micro switch 33, and realizes the connection or disconnection of the first micro switch 32 and the second micro switch 33.

[0015] like Figure 3 , 4 As shown, the switch-on / off indicator 27 has an indicator plate 271 at one end, an indicator hole 1021 is provided on the upper cover 102 corresponding to the indicator plate 271, a handle hole 231 exposed outside the indicator plate 271 is provided on the manual operating shaft 23, a manual operating hole 1022 is provided on the upper cover 102 corresponding to the handle hole 231, and the switch-on / off indicator 27 has a sleeve portion 272 matched with the manual operating shaft 23 at the other end, the sleeve portion 272 is engaged with the manual operating shaft 23, and a snap fit between the sleeve portion 272 and the manual operating shaft 23 is formed. The switch-on / off indicator and the manual operating shaft are assembled in a snap fit manner, thereby facilitating the assembly of the switch-on / off indicator and the manual operating shaft, and achieving higher assembly efficiency. The indicator plate 271 is provided with a protrusion 2711 matched with the first micro switch 32. The protrusion 2711 moves with the indicator plate 271 and triggers the first micro switch 32, and realizes the connection or disconnection of the first micro switch 32. The outer wall of the sleeve part 272 is provided with a convex block 2721 matched with the second micro switch 33. The convex block 2721 moves with the sleeve part 272 and triggers the second micro switch 33, and realizes the connection or disconnection of the second micro switch 33. The opening and closing indicator triggers the first micro switch and the second micro switch respectively through the protrusion and the convex block, thereby ensuring that the opening and closing indicator can reliably trigger the first micro switch and the second micro switch, which is conducive to improving the working reliability of the electric operating mechanism. The housing 101 is provided with a partition 1011, and the partition 1011 is provided with a receiving groove 1012 corresponding to the gear box 22 and the transmission gear 24, and the receiving groove 1012 covers the gear box 22 and the transmission gear 24. The partition 1011 is provided with a through hole 1013 corresponding to the manual operation shaft 23, and one end of the manual operation shaft 23 passes through the through hole 1013 and extends into the second receiving chamber 1001. The partition can separate the electric operation component and the control circuit board component in an independent space, thereby ensuring the working reliability of the electric operation mechanism. The partition 1011 is provided with a plurality of supporting columns 1014 corresponding to the control circuit board 31, and the control circuit board 31 is provided on the plurality of supporting columns 1014. The control circuit board 31 is provided with communication terminals 34 and wiring terminals 35, and the housing 101 is provided with wiring holes 1015 corresponding to the communication terminals 34 and the wiring terminals 35. The control circuit board is fixed on a plurality of supporting columns of the partition, thereby facilitating modular assembly of the control circuit board module and the housing, and the assembly efficiency is higher.

[0016] The electric operation assembly and the control circuit board assembly are respectively arranged in the first accommodating cavity and the second accommodating cavity, and the electric operation assembly and the control circuit board assembly are separated in independent cavities, which is conducive to the modular assembly of the electric operation mechanism, and the assembly efficiency is higher, and the working reliability of the electric operation mechanism can be ensured, and the first micro switch and the second micro switch are triggered by the opening and closing indicator, and the first micro switch and the second micro switch are integrated on the control circuit board, which can reliably monitor the working state of the electric operation mechanism. Therefore, the electric operation mechanism has the advantages of simple structure, stable and reliable performance, convenient assembly, and safety and reliability.

Claims

1. An electric operating mechanism, comprising a housing, a mechanism frame arranged in the housing, an electric operating assembly arranged on the mechanism frame, and a control circuit board assembly, characterized in that: The shell comprises a shell arranged on a mechanism frame and covering an electric operating component, and an upper cover arranged on the shell, a first accommodating chamber is formed between the mechanism frame and the shell, the electric operating component is arranged in the first accommodating chamber, a second accommodating chamber is formed between the shell and the upper cover, and the control circuit board assembly is arranged in the second accommodating chamber, the electric operating assembly comprises a motor arranged on the mechanism frame, a gear box cooperating with the motor, a manual operating shaft rotatably arranged on the mechanism frame, a transmission gear arranged on the manual operating shaft and cooperating with the gear box, a cam cooperating with the manual operating shaft, and a slider cooperating with the cam and used to drive the circuit breaker handle to perform opening and closing actions, the control circuit board assembly comprises a control circuit board arranged in the shell, a first micro switch and a second micro switch respectively arranged on the control circuit board, an opening and closing indicator is arranged on the manual operating shaft, the opening and closing indicator moves with the manual operating shaft and triggers the first micro switch and the second micro switch, and realizes the connection or disconnection of the first micro switch and the second micro switch.

2. The electric operating mechanism according to claim 1, characterized in that: The opening and closing indicator has an indicator plate at one end, an indicator hole is arranged on the upper cover corresponding to the indicator plate, a handle hole exposed outside the indicator plate is arranged on the manual operating shaft, a manual operating hole is arranged on the upper cover corresponding to the handle hole, and the opening and closing indicator has a sleeve part matching with the manual operating shaft at the other end, the sleeve part is engaged with the manual operating shaft, and a snap-fitting fit between the sleeve part and the manual operating shaft is formed.

3. The electric operating mechanism according to claim 2, characterized in that: The indicator disc is provided with a protrusion that matches the first micro switch, and the protrusion moves with the indicator disc and triggers the first micro switch, thereby realizing the connection or disconnection of the first micro switch. The outer wall of the sleeve part is provided with a convex block that matches the second micro switch, and the convex block moves with the sleeve part and triggers the second micro switch, thereby realizing the connection or disconnection of the second micro switch.

4. The electric operating mechanism according to claim 1 or 2, characterized in that: A partition is arranged in the shell, and accommodating grooves are respectively arranged on the partition corresponding to the gear box and the transmission gear. The accommodating grooves cover the gear box and the transmission gear. A through hole is arranged on the partition corresponding to the manual operating shaft. One end of the manual operating shaft passes through the through hole and extends into the second accommodating cavity.

5. The electric operating mechanism according to claim 4, characterized in that: The partition is provided with a plurality of support columns at locations corresponding to the control circuit board, the control circuit board is provided on the plurality of support columns, communication terminals and wiring terminals are provided on the control circuit board, and wiring holes are provided on the housing at locations corresponding to the communication terminals and wiring terminals.

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