Electric operating mechanism

Abstract

The invention relates to an electric operating mechanism which comprises a shell, a driving module and a sliding module, the driving module and the sliding module are arranged in the shell, the driving module and the sliding module are arranged in parallel relatively, the driving module comprises a motor, a gear set and a transmission disc, the motor transmits kinetic energy to the sliding module through the gear set and the transmission disc in sequence, and the motor drives the sliding module to rotate. The gear sets are meshed in the X-axis direction and arranged in a multi-layer increasing stepped mode in the Z-axis direction. The electric operating mechanism is arranged in a stepped manner, so that friction surfaces matched with gears are reduced, the transmission efficiency is improved, and the internal space is effectively utilized to miniaturize the electric operating mechanism. And meanwhile, the clutch structure of the driving disc ensures unidirectional rotation, so that the reliability and the safety of the system are improved, and the service life of the electric operating mechanism is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and more particularly to an electric operating mechanism for a circuit breaker. Background Art

[0002] As a power distribution device, the circuit breaker can connect, carry and disconnect the main circuit current, and plays an important role in power generation, transmission, distribution and power supply. As a special accessory for the circuit breaker, the electric operating mechanism can remotely close, disconnect and re-lock the circuit breaker to achieve centralized and automatic control of the transmission and distribution network, making the circuit breaker opening and closing switching more reliable, labor-saving and safer.

[0003] The existing electric operating mechanism has unreasonable structural design, with defects such as complex structure, unreliable performance and short service life. At present, the gear set of the electric operating mechanism is directly driven by a high-speed motor, and the gear set structure layout is relatively random, resulting in nonlinear transmission of kinetic energy output by the motor, and unstable gaps between gears. Under the repeated impact of the high-speed motor, the gear gap will become larger and larger. The larger transmission gap between gears will cause the action of the electric operating mechanism to slow down, accelerate the wear between gears, and reduce the service life of the entire mechanism, which has serious shortcomings. Summary of the invention

[0004] The purpose of the present invention is to provide a device with simple structure and easy operation to solve the technical problems of unreasonable gear layout and short life of electric operating mechanism in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: An electric operating mechanism comprises a shell, a driving module arranged in the shell, and a sliding module. The driving module and the sliding module are arranged relatively parallel. The driving module comprises a motor, a gear set, and a transmission plate. The motor transmits kinetic energy to the sliding module through the gear set and the transmission plate in sequence. The gear set is meshed along the X-axis direction and is arranged in a stepped manner with multiple layers increasing along the Z-axis direction.

[0006] Furthermore, the axis of the motor is arranged parallel to the Z-axis direction and transmits kinetic energy to the gear set along the X-axis direction.

[0007] Furthermore, at least some of the gears in the gear set that are arranged in the same direction along the Z axis are coaxially arranged.

[0008] Furthermore, the gear set includes a first gear, a second gear and a third gear, the first gear, the second gear and the third gear are meshed with each other, and the centers of the three are on the same X-axis.

[0009] Furthermore, the gear set includes a fourth gear, and the fourth gear is coaxially arranged with the second gear.

[0010] Furthermore, the gear set includes a fifth gear, and the fifth gear is coaxially arranged with the third gear.

[0011] Furthermore, the gears of the gear set are one large and one small integrated double-layer gears.

[0012] Furthermore, the transmission disc is located in the Y-axis direction of the gear set, and the transmission disc is meshed with the gear set.

[0013] Furthermore, the transmission plate is located above the sliding module along the Z-axis direction, and the transmission plate is linked to the sliding module.

[0014] Furthermore, the transmission disk keeps unidirectional rotation and drives the sliding module to move back and forth along the X-axis direction.

[0015] Furthermore, the driving module also includes an operating rod, which is coaxially arranged with the transmission disk and is located above the transmission disk along the Z-axis direction.

[0016] Furthermore, the sliding module includes a turntable, a stroke amplification mechanism, a slider, and a guide rail. The slider is slidably arranged on the guide rail. The turntable is connected to the slider through the stroke amplification mechanism. The turntable drives the slider to move back and forth along the X-axis direction through the stroke amplification mechanism.

[0017] Furthermore, the stroke amplification mechanism includes a first lever and a second lever, one end of the second lever is fixed, and the other end is movably connected to the slider, one end of the first lever is rotationally connected to the turntable, and the other end is linkage-connected to the slider through the second lever.

[0018] Furthermore, the second lever includes a fixed end, an action portion, and a driving end. The second lever rotates back and forth around the fixed end. The straight-line distance between the action portion and the fixed end is smaller than the straight-line distance between the driving end and the fixed end.

[0019] Furthermore, the fixed end is located at one end of the second lever, the second lever rotates back and forth around the fixed end, the driving end is located at the other end of the second lever and is movably connected to the slider, and the action portion is located between the fixed end and the driving end.

[0020] Furthermore, the fixed end, the action portion, and the driving end are located in a straight line, and the three constitute the second lever of a bar structure.

[0021] Furthermore, the fixed end, the action portion, and the driving end are not in a straight line, and the three constitute the second lever of a herringbone structure.

[0022] Furthermore, the sliding block includes a sliding body and an input slot. The sliding body can be slidably disposed on the guide rail, and the input slot cooperates with the driving end.

[0023] Furthermore, the input slot is located at the top of the slider along the Z-axis direction.

[0024] Furthermore, the slider also includes an output slot, and the output slot is located at the bottom of the slider along the Z-axis direction.

[0025] The electric operating mechanism of the present invention is arranged in a multi-step increasing step-by-step manner along the X-axis direction by the gear set, which not only reduces the friction surface of the gear matching and improves the transmission efficiency, but also effectively utilizes the internal space to miniaturize the electric operating mechanism. At the same time, the clutch structure of the transmission plate ensures unidirectional rotation, improves the reliability and safety of the system, and effectively increases the service life of the electric operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the exterior of the entire electric operating mechanism of the present invention; Figure 2 is a planar cross-sectional view of the entire electric operating mechanism of the present invention along the XZ plane; Figure 3 is a three-dimensional cross-sectional view of the entire electric operating mechanism of the present invention; Figure 4 is a schematic plan view along the XZ plane of the internal structure of the electric operating mechanism of the present invention; Figure 5 The three-dimensional schematic diagram of the internal structure of the electric operating mechanism of the present invention Figure 1 ; Figure 6 The three-dimensional schematic diagram of the internal structure of the electric operating mechanism of the present invention Figure 2 ; Figure 7 is a plan view of a drive module of the electric operating mechanism of the present invention; Figure 8 is a planar cross-sectional view along the YZ plane of the internal structure of the electric operating mechanism of the present invention; Fig. 9 The schematic diagram of the sliding module of the electric operating mechanism of the present invention along the XZ plane is shown in FIG. Figure 1 ; Fig.10 It is a plan view of the sliding module of the electric operating mechanism of the present invention along the XY plane; Fig.11The schematic diagram of the sliding module of the electric operating mechanism of the present invention along the XZ plane is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0027] like Figure 1 , 2 As shown, an electric operating mechanism includes a mechanism housing 1, a drive module 2, a sliding module 3, a control circuit board 4, a wiring terminal 5, a locking structure 6, and a handle 7.

[0028] The driving module 2, the sliding module 3, and the control circuit board 4 are arranged inside the mechanism housing 1; the locking structure 6 and the handle 7 are respectively inserted into the mechanism housing 1 and can extend to the outside of the mechanism housing 1; the wiring terminal 5 is arranged on the outside of the mechanism housing 1.

[0029] like Figure 2-4 As shown, the mechanism housing 1 includes a base 11, a middle cover 12, a bracket 13, and an upper cover 14. The base 11, the middle cover 12, and the upper cover 14 are made of plastic materials and provide insulation and protection for the entire machine; the bracket 13 is made of metal materials and provides support and fixation for the transmission structure.

[0030] The base 11 is provided with a plurality of mounting holes for fixedly connecting with the circuit breaker, and operating holes for transmission cooperation with the circuit breaker.

[0031] The middle cover 12 is fixed above the base 11 along the Z-axis direction, and includes a first chamber 121 and a second chamber 122 arranged up and down along the Z-axis direction, and a third chamber 123 and a fourth chamber 124 arranged on the same side along the Y-axis direction. The third chamber 123 and the fourth chamber 124 are arranged adjacent to each other front and back along the X-axis direction.

[0032] The bracket 13 is arranged in an inverted U shape in the second chamber 122. The bracket 13 has U-shaped arms on both sides, and the extended and bent sections of the U-shaped arms are fixed on the base 11. The cavity wall of the second chamber 122 abuts against and wraps the bracket 13, and the second chamber 122 plays an insulating and protective role for the bracket 13. The driving module 2 and the sliding module 3 are arranged in the U-shaped inner cavity of the bracket 13, and the bracket 13 and the base 11 play a role in limiting and fixing the driving module 2 and the sliding module 3. Part of the structure of the driving module 2 passes through the bracket 13 and the second chamber 122 to the first chamber 121, which reasonably and effectively utilizes the space inside the electric operating mechanism, making the electric operating mechanism more miniaturized.

[0033] The upper cover 14 is disposed on the middle cover 12 along the Z-axis direction, and forms a cavity space with the first chamber 121 .

[0034] like Figure 2 , 5 As shown in Figures 6 and 7, the driving module 2 and the sliding module 3 are arranged in the cavity space formed by the base 11 and the bracket 13. The driving module 2 is located in front of the sliding module 3 along the Y-axis direction. The driving module 2 transmits kinetic energy first to the X-axis direction and then to the Y-axis direction. After obtaining the kinetic energy, the sliding module 3 performs a reciprocating motion along the X-axis direction. The driving module 2 and the sliding module 3 are arranged relatively parallel along the X-axis, which effectively utilizes the internal space of the electric operation. At the same time, the kinetic energy transmission in a single direction can effectively reduce the friction in the matching process, effectively improving the service life of the electric operation mechanism.

[0035] The control circuit board 4 is disposed in a cavity space formed by the first chamber 121 and the upper cover 14 . The driving module 2 and the sliding module 3 can trigger a micro switch on the control circuit board 4 during movement to form a key position signal.

[0036] The connection terminal 5 is disposed outside the side wall of the first chamber 121 . The connection terminal 5 is electrically connected to the control circuit board and can transmit a position signal of the electric operating mechanism to the outside.

[0037] The locking structure 6 is inserted into the third chamber 123 and penetrates into the second chamber 122 , so as to lock the electric operating mechanism in the opening position.

[0038] The handle 7 is inserted into the fourth chamber 124 and is used to manually drive the sliding module 3 to perform a reciprocating motion along the X-axis direction.

[0039] like Figure 3 , 5 As shown in FIG. 8 , the driving module 2 includes a motor 21 , a gear set 22 , a transmission plate 23 , and an operating rod 24 .

[0040] like Figure 3 , 6 As shown in Figures 1 and 2, the motor 21 sequentially transmits kinetic energy to the sliding module 3 through the gear set 22 and the transmission disk 23, and the handle 7 can also directly transmit kinetic energy to the sliding module 3 through the operating rod 24. The motor 21 and the gear set 22 both transmit kinetic energy along the X-axis direction, and the gear set 22 transmits kinetic energy to the operating rod 24 along the Y-axis direction through the transmission disk 23. The gear set 22 and the transmission disk 23 not only expand the transmitted kinetic energy, but also realize the kinetic energy transmission in a single direction, which can effectively reduce the matching friction and efficiently transmit the kinetic energy.

[0041] The motor 21 is invertedly arranged on the bracket 13, and the motor 21 includes a body 211 and an output gear 212. The body 211 and the output gear 212 are arranged parallel to the Z-axis direction, and the output gear 212 is located below the body 21 along the Z-axis direction. The output gear 212 is meshed with the gear set 22, and the body 211 passes through the bracket 13 and the second chamber 122 to the first chamber 121. A power line is provided at the top of the body 211 along the Z-axis direction, and the power line can be conveniently electrically connected to the control circuit board 4, and the control circuit board 4 can control the motor 2 to work and not work. The inverted arrangement of the motor 21 not only reasonably and effectively utilizes the space inside the electric operating mechanism, reduces the size of the electric operating mechanism, and makes the electric operating mechanism more miniaturized, but also reduces the wiring distance of the power line inside the electric operating mechanism, reduces the cost of the power line and is easy to install.

[0042] like Figure 5-8 As shown, the gear set 22 is provided with a stepped increasing area, the gear set 22 is arranged in meshing arrangement along the X-axis direction in the stepped increasing area, and is arranged in a multi-step or multi-layer stepped increasing arrangement along the Z-axis direction. Regularly arranging the gears can effectively reduce the friction surface of the gear matching and effectively increase the service life of the electric operating mechanism.

[0043] The gear set 22 includes a first gear 221, a second gear 222, a third gear 223, a fourth gear 224, a fifth gear 225, a first shaft 226, a second shaft 227, and a third shaft 228. The first gear 221, the second gear 222, the third gear 223, the fourth gear 224, and the fifth gear 225 are all one-piece double-layer gear coaxial superposition structures, one large and one small, and the large gear is the input gear, the small gear is the output gear, and the adjacent two gears are respectively meshed with their own large gears and adjacent small gears to form a gear reduction structure.

[0044] The output gear 212 is meshed with the large gear of the first gear 221 at the same level along the X-axis direction, the small gear of the first gear 221 is meshed with the large gear of the second gear 222 at the same level along the X-axis direction, the small gear of the second gear 222 is meshed with the large gear of the third gear 223 at the same level along the X-axis direction, the small gear of the third gear 223 is meshed with the large gear of the fourth gear 224 at the same level along the X-axis direction, the small gear of the fourth gear 224 is meshed with the large gear of the fifth gear 225 at the same level along the X-axis direction, and the small gear of the fifth gear 225 is meshed with the transmission plate 23 at the same level along the Y-axis direction. The first gear 221, the second gear 222, the third gear 223, the fourth gear 224, and the fifth gear 225 form a step climbing area, and transmit kinetic energy through a step-by-step climbing arrangement structure.

[0045] The first gear 221, the second gear 222, and the third gear 223 are meshed and arranged along the positive direction of the X-axis, and are arranged in a step-by-step or multi-step incremental manner along the Z-axis direction. The second gear 222, the third gear 223, the fourth gear 224, and the fifth gear 225 are alternately meshed along the positive and negative directions of the X-axis, and are arranged in a step-by-step or multi-step incremental manner along the Z-axis direction. The fourth gear 224 is located directly above the second gear 222 along the Z-axis direction, and the fifth gear 225 is located directly above the third gear 223 along the Z-axis direction. The first gear 221, the fourth gear 224, and the fifth gear 225 are arranged in a step-by-step or multi-step incremental manner along the Z-axis direction. The step-by-step or multi-step incremental step-by-step arrangement can efficiently transmit kinetic energy, stably reduce the output speed, and reliably and effectively increase the service life of the electric operating mechanism.

[0046] The first gear 221 is rotatably fixed on the first shaft 226, the second gear 222 and the fourth gear 224 are coaxially rotatably fixed on the second shaft 227, the third gear 223 and the fifth gear 225 are coaxially arranged and rotatably fixed on the third shaft 228, and the gear set 22 is coaxially fixed by multiple gears in the step climbing area, which reduces the matching clearance between the gears and increases the stability of the matching between the gears; the first shaft 226, the second shaft 227, and the third shaft 228 are arranged in a straight line, that is, the output gear 212, the first gear 221, the second gear 222, and the third gear 223, the centers of each of the four are on the X-axis, ensuring that the kinetic energy is transmitted in a manner with less damage and minimal wear on the gears.

[0047] The first gear 221, the second gear 222, the third gear 223, the fourth gear 224, and the fifth gear 225 can adopt the same size gear structure, which can reduce the investment in molds, reduce the number of parts, and reduce production and operation costs. The first gear 221, the second gear 222, the third gear 223, the fourth gear 224, and the fifth gear 225 can also adopt gear structures of different sizes to obtain stable kinetic energy according to user requirements.

[0048] like Figure 4-8 As shown, the transmission disc 23 is a single-layer gear structure, which is located in the Y-axis direction of the gear set 22. The periphery of the transmission disc 23 is provided with a toothed structure, which meshes with the gear set 22; the center of the transmission disc 23 is provided with an annular ratchet structure, which can drive the operating rod 24 to rotate synchronously in one direction after being sleeved on the operating rod 24, and the transmission disc 23 can be integrally provided with the operating rod 24. When the handle 7 acts on the operating rod 24 and drives the operating rod 24 to continue rotating in the same direction, since the ratchet structure of the transmission disc 23 has a forward clutching effect, the operating rod 24 cannot drive the transmission disc 23 to continue rotating in the same direction. The transmission disc 23 plays a transition and clutch role in the reversing transmission of the kinetic energy of the drive module 2.

[0049] like Figure 3-6As shown in , 8, the operating rod 24 includes an operating portion 241, a rotating shaft portion 242, and an ejector portion 243. The operating portion 241 is sleeved on one end of the rotating shaft portion 242 and is located directly above the rotating shaft portion 242 along the Z-axis direction. The operating portion 241 is located in the first chamber 121, and a corresponding through hole is provided on the upper cover 14. The handle 7 passes through the through hole and is inserted into the operating portion 241 in the first chamber 121 for manual operation. To facilitate user selection, the circuit breaker can be manually operated at any time during a power outage to maintain the safety of the distribution line. The ejector portion 243 is located in the second chamber 122 and is inserted into the middle shaft column of the rotating shaft portion 242. A compression spring is abutted between one end of the ejector portion 243 and the rotating shaft portion 242. Under the action of the compression spring, the other end of the ejector portion 243 extends to the outside of the shaft column of the rotating shaft portion 242. The shaft portion 242 penetrates the first chamber 121 and the second chamber 122, the transmission disc 23 is sleeved in the middle of the shaft portion 242 and abuts against the other end of the ejector portion 243, and the other end of the ejector portion 243 and the ratchet structure in the center of the transmission disc 23 enable the transmission disc 23 to only drive the operating rod 24 to rotate in one direction, and there is a clutch fit between the transmission disc 23 and the operating rod 24. The bottom of the shaft portion 242 along the Z-axis direction is synchronously linked with the sliding module 3, and the sliding module 3 is located below the operating rod 24 along the Z-axis direction.

[0050] The motor 21 sequentially transmits kinetic energy to the sliding module 3 through the first gear 221 , the second gear 222 , the third gear 223 , the fourth gear 224 , the fifth gear 225 , the transmission plate 23 , and finally through the operating rod 24 .

[0051] The operating rod 24 is coaxially arranged with the transmission disk 23 and is located above the transmission disk 23 along the Z-axis direction. The operating rod 24 can drive the transmission disk 23 to rotate synchronously and can also drive the sliding module 3 to move.

[0052] like Figure 5 , 8 -10, the sliding module 3 is located below the transmission disk 23 along the Z-axis direction, and the sliding module 3 includes a turntable 31, a stroke amplification mechanism, a slider 34, a guide rail 35, and a spring 36. The stroke amplification mechanism includes a first lever 32 and a second lever 33.

[0053] The turntable 31 is fixed to the lowermost end of the rotating shaft portion 242 along the Z-axis direction, and rotates synchronously with the operating rod 24 in the same direction. The turntable 31 includes a center hole 311 and a rotating shaft 312. The center hole 311 can be a polygonal hole or a round hole. The center hole 311 is sleeved and fixed to the bottom of the rotating shaft portion 242 along the Z-axis direction. The rotating shaft 312 is located at the end of the rotating circle of the rotating turntable 31 and rotates with the rotation of the center hole 311 with the Z-axis as the rotation center.

[0054] The first lever 32 is a bar-shaped structure, one end of which is rotatably fixed on the rotating shaft 312, and the other end of which is rotatably fixed on the second lever 33. A through hole is provided in the middle for fixing one end of the spring 36. The first lever 32 performs a small reciprocating motion along the X-axis direction following the rotation of the rotating shaft 312.

[0055] The second lever 33 is a bar-shaped structure or a herringbone-shaped structure, and includes a fixed end 331, an action portion 332, and a driving end 333. The fixed end 331 is located at one end of the second lever 33, and is fixed to the bracket 13 and the base 11 through a rotating shaft. The second lever 33 rotates back and forth along the X-axis direction with the fixed end 331 as the center; the action portion 332 is located in the middle of the second lever 33, and the first lever 32 is rotatably fixed to the action portion 332; the driving end 333 is located at the other end of the second lever 33, and a rotating shaft is provided on the driving end 333 for cooperating with the slider 34 for movement.

[0056] The first lever 32 acts on the middle of the second lever 33, so that the second lever 33 rotates with the fixed end 331 as the rotation center, and drives the driving end 333 to increase the reciprocating motion along the X-axis direction, that is, the motion stroke is increased. At the same time, the electric operating mechanism can be made more compact by simply enlarging the stroke through multiple links.

[0057] The fixed end 331 , the acting portion 332 , and the driving end 333 may be located on a straight line to form the second lever 33 of a bar structure.

[0058] The fixed end 331 , the acting portion 332 , and the driving end 333 may not be in a straight line, so as to form the second lever 33 of a herringbone structure.

[0059] The slider 34 includes a sliding body 341, an input slot 342, and an output slot 343. The sliding body 341 is provided with a guide slot adapted to the guide rail 35 along the X-axis direction, so that the slider 34 can slide back and forth flexibly along the X-axis direction; the input slot 342 is located at the top of the slider 34 along the Z-axis direction, and is used to cooperate with the driving end 333. When the driving end 333 moves back and forth along the X-axis, it can act on the slot wall of the input slot 342, so that the slider 34 obtains a power along the X-axis direction; the output slot 343 is located at the bottom of the slider 34 along the Z-axis direction, and is used for the power output of the electric operating mechanism. Generally, it cooperates with the operating handle of the circuit breaker to drive the operating handle to move back and forth, thereby driving the circuit breaker to close or open.

[0060] The guide rails 35 are disposed on the U-shaped cavity wall of the bracket 13 along the X-axis direction, and at least two guide rails are disposed in parallel along the X-axis direction to increase the movement stability of the slider 34 .

[0061] The spring 36 is a tension spring or a compression spring, which is used to drive the first lever 32 to return to the initial state without external power, and limit the movement of the first lever 32, so that the components of the sliding module 3 remain in a relatively static state, and will not cause internal components to collide due to small external shaking, thereby protecting each component. The spring 36 provides a power for the first lever 32 to return to the initial position, preventing the first lever 32 from driving other components of the sliding rod module 3 to shake back and forth inside the electric operating mechanism.

[0062] The turntable 31 drives the slider 34 to make a reciprocating motion along the X-axis direction on the guide rail 35 through the first lever 32 and the second lever 33 in sequence.

[0063] The rotating disk 31 is coaxially arranged with the transmission disk 23 and the operating portion 241 and rotates synchronously, that is, the motor 21 or the handle 7 can drive the sliding module 3 to move, thereby realizing electric operation or manual operation.

[0064] The first lever 32 performs a reciprocating push-pull motion along the X-axis under the rotation of the turntable 31, and then acts on the middle part of the second lever 33, amplifying the motion stroke through the bearing at the end of the second lever 33, and further acts on the movable groove of the slider 34, finally driving the slider 34 to perform a reciprocating motion along the X-axis along the guide rail 35.

[0065] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. An electric operating mechanism, comprising a housing, a driving module and a sliding module arranged in the housing, wherein the driving module and the sliding module are arranged relatively parallel, the driving module comprises a motor, a gear set and a transmission disc, the motor sequentially transmits kinetic energy to the sliding module through the gear set and the transmission disc, and is characterized in that: The gear sets are meshed along the X-axis direction and are arranged in a stepped manner with increasing layers along the Z-axis direction.

2. An electric operating mechanism according to claim 1, characterized in that: At least some of the gears in the gear set that are arranged in the same direction along the Z axis are coaxially arranged.

3. An electric operating mechanism according to claim 1, characterized in that: The gear set includes a first gear, a second gear and a third gear. The first gear, the second gear and the third gear are meshed with each other, and the centers of the three gears are on the same X-axis.

4. An electric operating mechanism according to claim 3, characterized in that: The gear set includes a fourth gear, and the fourth gear is coaxially arranged with the second gear.

5. The electric operating mechanism according to claim 3, characterized in that: The gear set includes a fifth gear, and the fifth gear is coaxially arranged with the third gear.

6. An electric operating mechanism according to claim 4 or 5, characterized in that: The gears of the gear set are one large and one small integrated double-layer gears.

7. The electric operating mechanism according to claim 1, characterized in that: The sliding module includes a turntable, a stroke amplification mechanism, a slider, and a guide rail. The slider can be slidably arranged on the guide rail. The turntable is connected to the slider through the stroke amplification mechanism. The turntable drives the slider to move back and forth along the X-axis direction through the stroke amplification mechanism.

8. An electric operating mechanism according to claim 7, characterized in that: The stroke amplification mechanism includes a first lever and a second lever, one end of the second lever is fixed, and the other end is movably connected to the slider, one end of the first lever is rotatably connected to the turntable, and the other end is linked to the slider through the second lever.

9. An electric operating mechanism according to claim 8, characterized in that: The second lever comprises a fixed end, an acting part and a driving end. The second lever rotates back and forth around the fixed end. The straight-line distance between the acting part and the fixed end is smaller than the straight-line distance between the driving end and the fixed end.

10. An electric operating mechanism according to claim 9, characterized in that: The fixed end is located at one end of the second lever, and the second lever rotates back and forth around the fixed end. The driving end is located at the other end of the second lever and is movably connected to the slider. The action portion is located between the fixed end and the driving end.

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