CN211404432U

CN211404432U - Electric operating device

Info

Publication number: CN211404432U
Application number: CN202020470799.1U
Authority: CN
Inventors: 毛海锋; 楼峰; 罗斌
Original assignee: Suzhou Future Electrical Co ltd
Current assignee: Suzhou Future Electrical Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-09-01
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses an electric operating device, include: the electric operating device comprises a box body, an operating mechanism arranged in the box body and a sliding block linked with the operating mechanism, wherein the sliding block is used for being connected with a handle of a circuit breaker, the operating mechanism acts to drive the sliding block to act, the sliding block acts to drive the handle of the circuit breaker to act to realize the opening and closing operation of the circuit breaker, the operating mechanism can drive a lock or a remote electric control driving structure to drive the operation of the circuit breaker through manual control, the electric operating device further comprises a safety protection structure and a safety locking mechanism, the safety protection structure is further provided with a locking structure, and the locking structure is used for locking the safety protection structure. The utility model discloses make operating device can not switch over to manual operation mode at will from long-range automatically controlled operation mode, and long-range automatically controlled operation mode also can not launched by the while when being in manual operation mode, when the circuit breaker is in the dropout state in addition, operating device also can not be driven the action to improve device's safety in utilization.

Description

Electric operating device

Technical Field

The utility model relates to a circuit breaker controlgear field especially relates to an electric operating device.

Background

At present, a low-voltage circuit breaker requires that the circuit breaker can automatically cut off a circuit and protect an electric appliance under the condition of abnormal working, so that an electric operating device needs to be additionally arranged to realize timely switching on and switching off operations.

The operating mechanism is a core component in the electric operating device, the operating mechanism is linked with a sliding block provided with a breaker handle, and the operating mechanism acts to drive the sliding block to act and then drives the breaker handle to enable the breaker to perform opening and closing operations.

The operation mechanism can control actions through a manual operation mode or a remote electric control operation mode, in order to ensure operation safety, a general manual operation mode and a remote electric control operation mode cannot be started at the same time and can be used alternatively, namely when a field maintenance worker starts the manual operation mode, the remote electric control operation mode cannot be started, otherwise, a safety accident of the maintenance worker can be caused.

The existing operating mechanism is not provided with a safety protection structure, and the remote electric control operating mode cannot be started when the operating mechanism is in the manual operating mode.

In addition, in the practical use process, when the test switch is pressed down through the safety lock to enable the breaker to be disconnected, the operating mechanism can be driven to act by misoperation, and danger is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem of main solution provides an electric operating means, and long-range automatically controlled operating mode is inoperative when can making operating device be in manual operation mode, and when the test switch of circuit breaker was pushed down, operating device also can not be driven the action, improves the operational safety.

In order to solve the technical problem, the utility model discloses a technical scheme be: provided is an electric operation device including: the operating mechanism acts to drive the sliding block to act, the sliding block acts to drive the handle of the circuit breaker to act to realize the opening and closing operation of the circuit breaker, the operating mechanism can drive the lock to act through manual control or a remote electric control driving structure,

the electric operating device also comprises a safety protection structure and a safety locking mechanism,

the safety protection structure comprises: the cover plate is arranged above a manual control driving lock of the electric operating device, and when the cover plate covers the manual control driving lock, the cover plate is in contact with the micro switch to trigger the micro switch to electrify the remote electric control driving structure;

when the cover plate is opened from the manual control drive lock, the cover plate is separated from the microswitch, the microswitch is reset and loses power to lead the remote electric control drive structure to be powered off,

the safety protection structure is also provided with a locking structure, and the locking structure is used for covering the cover plate locking cover on the manual control drive lock;

the safety locking mechanism is arranged on the side of the sliding block and used for pressing down a test switch on the circuit breaker and locking the sliding block to move.

In a preferred embodiment of the present invention, the locking structure includes a lock catch disposed on the upper end panel of the box body and a lock notch formed on the cover plate and engaged with the lock catch.

In a preferred embodiment of the present invention, the safety locking mechanism includes: the circuit breaker testing switch pressing device comprises a pressing structure for pressing down a circuit breaker testing switch and a safety lock for controlling the action of the pressing structure.

In a preferred embodiment of the present invention, the pressing structure includes a rotating shaft, a sliding plate, a lever, and a pressing post, a first protrusion capable of aligning to push the sliding plate to move is disposed on the rotating shaft, a second protrusion capable of aligning to stop the slider to move is further disposed on the rotating shaft, the safety lock is fixedly connected to the rotating shaft, the safety lock rotates to drive the rotating shaft to rotate, when the safety lock is in the unlocking state, the first protrusion aligns to push the sliding plate to move, the sliding plate pushes one end of the lever contacting with the sliding plate to move upwards, so that the other end of the lever fixed with the pressing post drives the pressing post to move downwards to press the test switch, and at this time, the second protrusion aligns to stop the slider to.

In a preferred embodiment of the present invention, the operating mechanism includes a driving shaft, a flange fixed on the upper end of the driving shaft, a large disc fixed on the shaft body of the driving shaft, a cam fixed on the lower end of the driving shaft, and a pulley fixed on the cam, wherein the pulley is rotated synchronously with the cam for pushing the slider in contact with the pulley to move, and then the handle is driven to move.

In a preferred embodiment of the present invention, the manual drive lock is provided on the flange.

In a preferred embodiment of the present invention, the remote electrically controlled driving structure includes a remote control circuit, a motor connected to the remote control circuit, and a gear box connected to the motor, wherein a final transmission gear in the gear box is in contact with a large disk on the operating mechanism, and the motor is driven by the terminal controller through the remote control circuit.

In a preferred embodiment of the present invention, the box body has a partition plate in the middle and a fixing plate at the bottom, the motor is fixed on the fixing plate, and the gear box is fixed on the partition plate.

In a preferred embodiment of the present invention, the gear box is a three-stage transmission gear box.

In a preferred embodiment of the present invention, the housing of the gear box is a plastic housing integrally injection-molded by plastic material.

In a preferred embodiment of the present invention, the housing of the gear box is further provided with a mounting hole, and the mounting hole is used for mounting a driving shaft of the operating mechanism

The utility model has the advantages that: the utility model adopts the safety protection structure and the safety locking mechanism, when the operating mechanism is in the manual operation mode, the remote electric control operation mode does not work, and when the test switch of the circuit breaker is pressed down, the operating mechanism can not be driven to act; in addition, a locking structure is arranged on the safety protection structure, and a cover plate locking cover in the protection structure can be closed on the manual control driving lock, so that the operation mechanism cannot be switched to a manual operation mode from a remote electric control operation mode at will, and the operation safety is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of an electric operation device;

FIG. 2 is a first schematic view of the internal structure of the electrically operated device;

FIG. 3 is a second schematic view of the internal structure of the electrically operated device;

FIG. 4 is a third schematic view of the internal structure of the electrically operated device;

FIG. 5 is a fourth schematic view of the internal structure of the electrically operated device;

FIG. 6 is a schematic view of the assembled structure of the partition and the gearbox housing;

FIG. 7 is a schematic structural view of the gearbox housing;

FIG. 8 is a schematic view of the structure of the separator;

the parts in the drawings are numbered as follows:

1. the device comprises a box body, 11, a fixing plate, 12, a partition plate, 121, guide rails, 122, positioning holes, 123, lock holes, 13 and a panel; 2. the device comprises an operating mechanism 21, a driving shaft 22, a flange plate 23, a large disk 24, a cam 25 and a pulley; 3. a slider; 4. a manual drive lock; 5. the remote electric control driving structure 51, the motor 511, the motor transmission gear 52, the gear box 521, the gear box shell 5211, the shell body 5212, the concave cavity 5213, the positioning rod 5214, the locking rod 5215, the positioning boss 5216, the avoiding notch 5217 and the mounting hole; 6. a protection structure 61, a cover plate 62 and a microswitch; 7. the safety locking mechanism comprises a safety locking mechanism 71, a safety lock 72, a rotating shaft 721, a first protrusion 722, a second protrusion 73, a sliding plate 74, a lever 75 and a pressing column; 8. locking structure, 81, hasp, 82, fore shaft.

Detailed Description

Referring to fig. 1, an embodiment of the present invention includes:

an electric operating device can carry out reset operation and opening and closing operation on a circuit breaker in a manual operation mode and a remote electric control operation mode;

as shown in fig. 2 to 5, the electric operating device comprises a box body 1, an operating mechanism 2 installed in the box body 1, and a slider 3 linked with the operating mechanism 2, wherein a fixing plate 11 is arranged at the bottom of the box body 1, the electric operating device is connected with the circuit breaker through the fixing plate 11, a partition plate 12 is arranged in the middle of the box body 1, the slider 3 is slidably arranged on a guide rail 121 on the partition plate 12, the slider 3 is used for being connected with a handle of the circuit breaker, the operating mechanism 2 acts to drive the slider 3 to act, and the slider 3 acts to drive the handle of the circuit breaker to act to realize the opening and closing operation of;

the operating mechanism 2 can drive the lock 4 through manual control or drive the lock 5 through remote electric control to act;

in this embodiment, the operating mechanism 2 includes a driving shaft 21, a flange 22 fixed at the upper end of the driving shaft 21, a large disk 23 fixed at the shaft body of the driving shaft 21, a cam 24 fixed at the lower end of the driving shaft 21, and a pulley 25 fixed on the cam 24, wherein the pulley 25 rotates synchronously with the cam 24 to push the slider 3 in contact with the pulley 25 to move, and then drives the handle to move;

further, the manual control drive lock 4 is arranged on the flange plate 22, a key matched with the manual control drive lock 4 is inserted into the manual control drive lock 4, the key is rotated to drive the drive shaft 21 to rotate, the drive shaft 21 rotates to drive the cam 24 fixed on the drive shaft 21 to rotate, the pulley 25 fixed on the cam 24 rotates in place along with the cam 24 (the manual control drive lock 4 is in an unlocking state), the pulley 25 pushes the sliding block 3 in contact with the pulley 25 to move back and forth along the guide rail 121, and then the handle is driven to move to realize the opening and closing operation;

the remote electric control driving structure 5 comprises a remote control circuit, a motor 51 connected with the remote control circuit and a gear box 52 connected with the motor 51, wherein a final-stage transmission gear of the gear box 52 is in contact with a large disc 23 on the operating mechanism 2, the motor 51 is driven by a terminal controller through the remote control circuit to act, the motor 51 drives the gear box 52 to transmit, the gear box 52 drives the large disc 23 to rotate, the large disc 23 rotates to drive a driving shaft 21 and a cam 24 which are fixed together with the large disc 23 to rotate, a pulley 25 fixed on the cam 24 rotates together with the cam 24 to be in place at the moment, the pulley 25 pushes a sliding block 3 in contact with the pulley 25 to move back and forth along a guide rail 121, and then a handle is driven to;

in this embodiment, the gear box 52 is installed on the partition plate 12, the motor 51 is installed on the fixing plate 11, a motor transmission gear 511 is fixed on an output shaft of the motor 51, the motor transmission gear 511 is engaged with a first-stage transmission gear in the gear box 52, a last-stage transmission gear in the gear box 52 is in contact with the large disc 23, the motor 51 drives the gear box 52 to transmit and then drives the large disc 23 to rotate, the large disc 23 rotates to drive the driving shaft 21 fixed together with the large disc 23 to rotate, the driving shaft 21 rotates to drive the cam 24 to rotate, the pulley 25 synchronously rotates in place along with the cam 24 to push the slider 3 to move, and finally the handle is driven to act to realize the;

preferably, the gearbox 52 in this embodiment is a three-stage transmission gearbox.

With further reference to fig. 6 to 8, in this embodiment, in order to facilitate the installation of the gear box 52 and the positioning and supporting of the transmission gear in the gear box 52, the gear box 52 has a gear box positioning structure, the gear box positioning structure includes a gear box housing 521, the gear box housing 521 is fixed on the partition plate 12, the gear box housing 521 is integrally injection-molded by plastic materials, and includes a housing body 5211 and a cavity 5212 located in the housing body 5211, three positioning rods 5213 and a lock rod 5214 are arranged on the housing body 5211, a plurality of positioning bosses 5215 protruding from the upper end surface of the housing body 5211 are arranged in the cavity 5212, and the positioning bosses 5215 are used for limiting and supporting the transmission shaft of the gear located in the cavity 5212.

Specifically, the positioning rods 5213 are distributed along the edge of the housing body 5211 and are matched with the positioning holes 122 on the partition 12; the latch 52 extends downwardly along the lower edge of the housing to engage a latch aperture 123 in the partition 12.

An escape notch 5216 is formed in the side wall of the housing body 5211 close to the motor 51, and is used for enabling a motor transmission gear 511 at the output shaft end of the motor 51 to be in contact engagement with a first-stage transmission gear in the gear box 52.

The housing body 5211 is further provided with a mounting hole 5217, and the mounting hole 5217 is used for mounting the driving shaft 21 of the operating mechanism 2.

In the present application, the remote control circuit is controlled to be on or off by a signal acquisition element or a microswitch 62.

Specifically, a panel 13 is arranged at the upper end of the box body 1 of the electric operation device, a protection structure 6 for protecting the manual control drive lock 4 is arranged on the panel 13, the protection structure 6 comprises a cover plate 61 and a signal acquisition element or a microswitch 62, and the signal acquisition element or the microswitch 62 is used for controlling the on-off of a remote control circuit.

Further, the signal acquisition element may adopt a photoelectric sensor for detecting the position of the cover plate 61, when the cover plate 61 is covered above the manual control drive lock 4, the photoelectric sensor can detect the in-place signal of the cover plate 61, the photoelectric sensor feeds back the relevant signal to the terminal controller, the terminal controller controls the remote control circuit to be powered on, and at this time, the remote electric control operation mode can be started;

when the cover plate 61 is removed from the manually actuated lock 4, the photoelectric sensor does not detect that the cover plate 61 is in place, the photoelectric sensor loses its signal and the remote control circuit is disconnected, at which point a manual mode of operation may be used.

Further, with reference to fig. 3, in this embodiment, a structural design that a micro switch 62 and a cover plate 61 are matched with each other is adopted, the micro switch 62 is located below the cover plate 61, when the cover plate 61 is covered on the manual control drive lock 4, the cover plate 61 is pressed on the micro switch 62, the micro switch 62 is triggered to be powered on to electrify the remote control circuit, and at this time, a remote electronic control operation mode can be started;

when the cover plate 61 is removed from the manual drive lock 4, the cover plate 61 is separated from the microswitch 62, and the microswitch 62 is reset and de-energized to disconnect the remote control circuit, at which time a manual mode of operation may be used.

Specifically, when a remote electric control operation mode needs to be used, the cover plate 61 is covered on the manual control drive lock 4 and is in contact with the microswitch 62, the microswitch 62 is triggered to be powered on, so that the remote control circuit is controlled to be powered on, the remote control circuit can drive the motor 51 to act, the motor 51 acts to drive the gear box 52 to act, the gear box 52 acts to drive the large disc 23 to act, then the drive shaft 21, the cam 24 and the pulley 25 are driven to act, and finally the slider 3 is driven to move and the handle acts, so that the opening and closing operation of the circuit breaker is realized;

when a manual operation mode is needed, the cover plate 61 is opened, the microswitch 62 is separated from the cover plate 61 at the moment, the microswitch 62 is reset and loses power, and the remote control circuit is disconnected, so that when the manual operation mode is in, the remote electric control operation mode cannot be started, and the situation that when a maintenance worker uses the manual operation mode to drive the operating mechanism 2 to drive the handle brake-off to perform maintenance, the motor 51 is remotely controlled and started by the terminal controller, and the driving operating mechanism 2 drives the handle to be switched on to cause safety accidents to the maintenance worker is avoided.

With continued reference to fig. 1 and 2, the safety protection structure 6 is further provided with a locking structure, and the locking structure 8 is used for locking the cover plate 61 on the manual control drive lock 4; specifically, the locking structure 8 includes a lock catch 81 disposed on the panel 13 and a lock notch 82 disposed on the cover plate 61 and engaged with the lock catch 81, when the cover plate 61 is covered on the manual driving lock 4, the lock catch 81 is inserted into the lock catch 82 to lock and cover the cover plate 61 on the manual driving lock 4, so as to prevent the manual driving lock 4 from being opened at will, that is, the electric operating device is controlled by a remote electric control driving mode in a normal state, and when field maintenance is required, the cover plate 61 is opened to open the manual driving lock 4 to use the manual operation mode by opening the locking structure; the locking structure 8 is arranged on the safety protection structure 6, so that the operating mechanism cannot be switched to a manual operating mode from a remote electric control operating mode at will, and the operating safety is improved.

With continuing reference to fig. 3 and 4, the electric operating device is further provided with a safety locking mechanism 7, a pressing structure for pressing down the circuit breaker test switch and a safety lock 71 for controlling the action of the pressing structure are arranged in the safety locking mechanism 7, the pressing structure includes a rotating shaft 72, a sliding plate 73 linked with the rotating shaft 72, a lever 74 contacted with the sliding plate 73, and a pressing column 75 fixedly connected below the end of the lever 74, the safety lock 71 is fixedly connected to the rotating shaft 72, the rotating shaft 72 is provided with a first protrusion 721 capable of aligning to push the sliding plate 73 to move, and the rotating shaft 72 is further provided with a second protrusion 722 capable of aligning to block the sliding block 3 from moving;

the safety lock 71 rotates to drive the rotating shaft 72 to rotate, when the safety lock 71 is in an unlocking state, the first protrusion 721 pushes the sliding plate 73 to move in an alignment mode, the sliding plate 73 pushes one end of the lever 74 in contact with the sliding plate to move upwards, the other end of the lever 74 fixed with the pressing column 75 drives the pressing column 75 to move downwards to press the test switch, and at the moment, the second protrusion 722 aligns to block the sliding block 3 to move towards a closing direction;

through the mutual matched structural design of the first protrusion 721, the sliding plate 73, the lever 74 and the pressing column 75, the pressing structure has a long pressing stroke, a test switch on the circuit breaker can be pressed in place, the second protrusion 722 can limit the sliding block 3 when the test switch is pressed down, the sliding block 3 is prevented from moving towards the opening direction, and therefore the use safety is improved.

Specifically, during the use, a key matched with the safety lock 71 is inserted into the safety lock 71 to rotate to unlock the safety lock 71, at the moment, the key rotates to drive the safety lock 71 and the rotating shaft 72 to rotate, the first protrusion 721 aligns to push the sliding plate 73 when the rotating shaft 72 rotates in place, the sliding plate 73 is in contact with the lever 74 through a slope surface, when the sliding block 73 moves, the lever 74 is pushed to move upwards from one end of the sliding block which is in contact with the lever 74, so that the other end of the sliding block 75 is moved downwards, namely, the sliding block 75 is driven to press downwards to push the test switch to be unlocked, at the moment, the second protrusion 722 rotates to align to the end of the sliding block 3, the sliding block 3 can be locked to move towards the direction, and therefore when the test switch of the circuit.

When the safety lock 71 is in a locked state, the first protrusion 721 is not aligned with the sliding plate 73, and the second protrusion 722 is not aligned with the sliding block 3, that is, when the test switch is not pressed, the operating mechanism 2 can be normally driven to perform an opening and closing operation.

In summary, the utility model adopts the safety protection structure and the safety locking mechanism, so that the remote electric control operation mode does not work when the operation mechanism is in the manual operation mode, and meanwhile, when the test switch of the circuit breaker is pressed down, the operation mechanism can not be driven to act, thereby improving the operation safety;

specifically, the utility model discloses a structural design that apron and signal acquisition component/micro-gap switch mutually supported, the apron is used for protecting manual drive lock, be used for detecting whether the apron covers to close on manual drive lock in order to obtain/lose the break-make of signal control remote control circuit through the signal acquisition component, or whether contact with the apron through micro-gap switch makes micro-gap switch live or loses the break-make of control remote control circuit, thereby when guaranteeing that electric operating means is in manual operation mode, long-range automatically controlled drive structure just can not launch, thereby can avoid when maintenance personal scene manual operation, long-range automatically controlled operation mode drive arrangement moves and causes bodily injury;

the safety locking mechanism composed of a safety lock pressing structure is adopted, the pressing structure is controlled to move through the safety lock, the first protrusion, the sliding plate, the lever and the pressing column are linked to be matched with each other, the pressing structure is enabled to have a long pressing stroke, the test switch on the circuit breaker can be pressed in place, the second protrusion can limit the sliding block when the test switch is pressed down, the sliding block is prevented from moving towards the opening direction, and therefore the use safety is improved.

In addition, the gearbox shell is integrally injection-molded by plastic materials, and the locating rod and the lock rod are arranged on the shell, so that the shell is conveniently and fixedly connected with the partition plate, and the shell has the characteristic of convenient disassembly and assembly; meanwhile, the positioning boss capable of limiting and supporting the gear transmission shaft is arranged on the shell, so that the displacement of the gear can be limited, the reliability of limiting and fixing the gear transmission shaft is improved, meanwhile, the boss does not need to be machined on the gear transmission shaft, and the manufacturing cost can be reduced.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes made by the contents of the specification and the drawings are utilized, or between or indirectly applied to other related technical fields, all the same are included in the patent protection scope of the present invention.

Claims

1. An electrically operated device comprising: the circuit breaker switching-on and switching-off device comprises a box body, an operating mechanism arranged in the box body and a sliding block linked with the operating mechanism, wherein the sliding block is used for being connected with a handle of the circuit breaker, the operating mechanism acts to drive the sliding block to act, and the sliding block acts to drive the handle of the circuit breaker to act to realize the switching-on and switching-off operation of the circuit breaker, and is characterized in that the operating mechanism can drive the circuit breaker to act through a manual control drive lock or a remote,

2. The electrically operated device according to claim 1, wherein the locking structure comprises a locking catch provided on an upper end panel of the case, and a locking notch provided on the cover plate to be engaged with the locking catch.

3. The electrically operated device of claim 1, wherein the safety locking mechanism comprises: the circuit breaker testing switch pressing device comprises a pressing structure for pressing down a circuit breaker testing switch and a safety lock for controlling the action of the pressing structure.

4. The electric operating device according to claim 3, wherein the pressing structure comprises a rotating shaft, a sliding plate, a lever and a pressing post, a first protrusion capable of aligning to push the sliding plate to move is arranged on the rotating shaft, a second protrusion capable of aligning to block the sliding block to move is further arranged on the rotating shaft, the safety lock is fixedly connected on the rotating shaft, the rotation of the safety lock drives the rotating shaft to rotate, when the safety lock is in an unlocking state, the first protrusion aligns to push the sliding plate to move, the sliding plate pushes one end of the lever in contact with the sliding plate to move upwards, the other end of the lever fixed with the pressing post drives the pressing post to move downwards to press the test switch, and at the moment, the second protrusion aligns to block the sliding block to move towards a closing.

5. The electrically operated device as claimed in any one of claims 1 to 4, wherein the operating mechanism comprises a driving shaft, a flange fixed to an upper end of the driving shaft, a large disc fixed to a shaft body of the driving shaft, a cam fixed to a lower end portion of the driving shaft, and a pulley fixed to the cam, the pulley being rotated in synchronism with the cam for pushing a slider in contact with the pulley to move, thereby operating the handle.

6. The electrically operated device of claim 5 wherein said manual drive lock is disposed on said flange.

7. The electrically operated device according to claim 5, wherein the remote electrically controlled driving structure comprises a remote control circuit, a motor connected with the remote control circuit, and a gear box connected with the motor, wherein a final transmission gear in the gear box is contacted with a large disc on the operating mechanism, and the motor is driven to act by the terminal controller through the remote control circuit.

8. The electric operating device according to claim 7, wherein the box body is provided with a partition plate at the middle part and a fixing plate at the bottom part, the motor is fixed on the fixing plate, and the gear box is fixed on the partition plate.

9. The electrically operated device according to claim 8, wherein the housing of the gear case is a plastic housing integrally injection-molded from a plastic material.

10. The electrically operated device according to claim 9, wherein the housing of the gear box is further provided with a mounting hole for mounting a drive shaft of the operating mechanism.