CN220796513U

CN220796513U - Dual-power change-over switch operation structure

Info

Publication number: CN220796513U
Application number: CN202322594308.0U
Authority: CN
Inventors: 李晓海; 郑旭池; 章仕斌; 何小明; 盛旭雷
Original assignee: Zhejiang People Ele Appliance Co ltd
Current assignee: Zhejiang People Ele Appliance Co ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2024-04-16
Anticipated expiration: 2033-09-22

Abstract

The utility model discloses a dual-power-supply change-over switch operation structure, which comprises a shell, a driving gear, a first transmission structure and a second transmission structure, wherein the first transmission structure and the second transmission structure are connected with the driving gear; and when the second transmission structure drives the handle to execute the closing action, the driving gear drives the trigger rod to trigger the second indication switch to act. The switching-on/off signal detection of the two groups of switching devices is realized through the structural design, and the switching-on/off states of the two switching devices can be known according to the indication signals sent by the two indication switches, so that the working states of the two groups of switching devices can be clearly judged when the line is overhauled, maintained and closed, and the safety of the line and personnel is ensured.

Description

Dual-power change-over switch operation structure

Technical Field

The utility model relates to the technical field of transfer switches, in particular to a dual-power transfer switch operation structure.

Background

The double-power transfer switch is mainly used for a switching device for automatically switching a load circuit from one power supply to another (standby) power supply in an emergency power supply system so as to ensure continuous and reliable operation of important loads. The dual-power automatic transfer switch is used for one path of common power and one path of standby power simply, and when the common power suddenly fails or fails, the dual-power automatic transfer switch is automatically switched on the standby power, so that the equipment can still normally operate.

The double-power change-over switch comprises a main switch and a standby switch, the two switches are controlled by an operating mechanism to realize the connection and disconnection of the main power supply and the standby power supply, the existing operating mechanism is installed in a shell and mainly comprises a driving shaft, a transmission assembly and two sliding blocks connected with the two switches, the gear assembly comprises a circular gear which is arranged in linkage with the driving shaft, and two racks which are respectively arranged on one side of the two sliding blocks and are meshed with the circular gear in a opposite way, the other side of the two sliding blocks is respectively provided with a driving groove connected with handles of the two switches, and when the driving shaft is operated to rotate, the two sliding blocks are driven to do reverse motion through the transmission cooperation of the gears and the racks, so that the on-off switching of the main switch and the standby switch is realized. Because the operation structure is arranged in the shell, a worker cannot intuitively know the switching states of the main switch and the standby switch, and the power supply line which is not clearly switched cannot be timely fed back, the maintenance work of the power supply line can be delayed, and the risk of misoperation exists.

Disclosure of utility model

Therefore, the technical problem to be solved by the utility model is to overcome the problems that in the prior art, the operation structure of the dual-power switch is arranged in the shell, a worker cannot intuitively know the switching states of the main switch and the standby switch, and the power line to be switched is unclear, so that the maintenance work of the power line is delayed, and the risk of misoperation exists.

In order to solve the problems, the utility model provides a dual-power conversion switch operation structure, which comprises a shell frame, a driving gear rotatably arranged in the shell frame, a first transmission structure and a second transmission structure, wherein the first transmission structure and the second transmission structure are connected with the driving gear and respectively drive handles of two switch devices to execute switching-on or switching-off actions; the driving gear is provided with a trigger rod extending along the axial direction of the driving gear, the shell frame is provided with a first indication switch and a second indication switch which are used for respectively indicating the opening and closing states of the two switch devices, and the first indication switch and the second indication switch are positioned on the movement path of the trigger rod;

when the first transmission structure drives the handle to execute a closing action, the driving gear drives the trigger rod to move to the side far away from the second indication switch, and the first indication switch is triggered to act;

when the second transmission structure drives the handle to execute the closing action, the driving gear drives the trigger rod to move to the side far away from the first indication switch and triggers the second indication switch to act.

As a preferred scheme, the shell frame comprises a mounting cavity for accommodating the driving gear and a circuit board arranged on the upper side of the mounting cavity, a movement groove is formed in the circuit board according to the movement track of the trigger rod, the trigger rod is arranged in the movement groove in a penetrating mode, and the first indication switch and the second indication switch are fixed on the circuit board and are arranged at two ends of the movement groove respectively.

As a preferable mode, the movement groove is of an arc-shaped groove structure, and the first indication switch and the second indication switch are respectively provided with a key part which is contacted with or separated from the trigger rod.

As a preferable scheme, the driving gear is rotatably arranged in the mounting cavity through a power shaft, the two switch devices are respectively positioned at two sides of the shell frame, a shell cover for covering the two switch devices is arranged on the shell frame, the power shaft and the trigger rod extend in the same direction and penetrate through the circuit board, and an operating handle for connecting the power shaft is arranged on the shell cover.

As a preferred aspect, the first transmission structure includes: the first gear is arranged on the side wall of the mounting cavity in a rotating way through the first rotating shaft, and the first transmission arm is connected with the handle of one of the circuit breakers and the first gear and is rotatably sleeved on the first rotating shaft, and the first gear is meshed with the driving gear;

The second transmission structure comprises: the second rotating shaft is used for rotating a second gear arranged on the side wall of the mounting cavity, and a second transmission arm connected with the other handle of the circuit breaker and the second gear, the second transmission arm is rotatably sleeved on the second rotating shaft, and the second gear is meshed with the driving gear.

As a preferable scheme, the first gear and the second gear are respectively provided with an arc-shaped travel groove, the first transmission arm and the second transmission arm are respectively provided with a travel rod penetrating through the travel grooves, and two ends of the travel groove are respectively a closing end and a separating end for pushing the travel rod to move.

As a preferable scheme, the first transmission arm and the second transmission arm are respectively provided with a handle sleeve which extends out of the installation cavity and is in linkage fit with a handle of the circuit breaker, and the handle sleeve and the travel rod are respectively arranged at two ends of the first transmission arm and the second transmission arm.

As a preferable scheme, the first gear, the second gear and the driving gear are respectively in a helical gear structure, the driving gear is provided with a first tooth part meshed with the first gear and a second tooth part meshed with the second gear, and the axial directions of the first gear and the second gear are perpendicularly intersected with the axial direction of the driving gear.

As a preferred embodiment, the trigger lever is disposed on the outer peripheral edge of the drive gear with respect to the power shaft and is located between the first tooth portion and the second tooth portion.

As a preferable scheme, the shell frame comprises a motor groove with an opening facing the bottom of the shell frame and a bottom plate covering the motor groove, the driving motor is positioned and installed in the motor groove through a plurality of positioning shafts, and the bottom plate is in limit fit with the driving motor when fixedly covering the motor groove.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. In the dual-power change-over switch operation structure provided by the utility model, the driving gear is respectively connected with the handles of the two switch devices through the first transmission structure and the second transmission structure, and the driving gear is provided with the trigger rod for triggering the first indication switch and the second indication switch respectively.

2. In the dual-power transfer switch operation structure provided by the utility model, the circuit board is arranged in the mounting cavity of the shell frame, the circuit board is provided with the moving groove with an arc-shaped structure, the trigger rod extends axially to penetrate through the moving groove, and is fixed on the circuit board and positioned at the two ends of the moving groove according to the first indication switch and the second indication switch; and triggering the second indicating switch to act when the trigger rod moves to the other end of the movement groove, so as to drive the second indicating switch to send an indicating signal for indicating the other group of switching devices to be switched on.

3. According to the dual-power transfer switch operation structure, the first gear and the second gear are respectively connected with the two handles of the two groups of switch devices through the first transmission arm and the first transmission arm, arc-shaped travel grooves are respectively formed in the first gear and the second gear, and travel rods penetrating through the travel grooves are respectively arranged on the first transmission arm and the second transmission arm.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic perspective view of an operation structure of a dual power transfer switch according to the present utility model;

FIG. 2 is a schematic view of the structure of the dual power transfer switch of the present utility model after the cover is hidden;

FIG. 3 is a top view of the dual power transfer switch operating configuration of the present utility model;

Fig. 4 is a schematic structural diagram of the first transmission structure of the present utility model when closing;

fig. 5 is a schematic structural diagram of the second transmission structure of the present utility model when closing;

FIG. 6 is a schematic view of the structure of a first actuator arm of the present utility model;

FIG. 7 is a schematic view of the mounting structure of the driving motor of the present utility model;

Reference numerals illustrate: 1. a housing; 11. a mounting cavity; 12. a circuit board; 13. a movement groove; 14. a bottom plate; 15. positioning a shaft; 16. a driving motor; 2. a drive gear; 20 power shafts; 21. a first tooth portion; 22. a second tooth portion; 3. a trigger lever; 4. a first transmission structure; 41. a first gear; 411. a travel groove; 42. a first transmission arm; 421. a travel bar; 422. a handle sleeve; 43. a first rotating shaft; 5. a second transmission structure; 51. a second gear; 52. a second transmission arm; 53. a second rotating shaft; 6. a first indication switch; 7. a second indication switch; 8. a housing; 81. an operation handle; 9. a switching device.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The embodiment provides a dual-power conversion switch operation structure as shown in fig. 1-6, which comprises a shell frame 1, a driving gear 2 rotatably arranged in the shell frame 1, a first transmission structure 4 and a second transmission structure 5, wherein the first transmission structure 4 and the second transmission structure 5 are connected with the driving gear 2 and respectively drive handles of two switching devices to perform switching-on or switching-off actions, and the driving gear 2 drives one of the first transmission structure 4 and the second transmission structure 5 to perform switching-on or switching-off actions of the handles; the driving gear 2 is provided with a trigger rod 3 extending along the axial direction of the driving gear, the shell frame 1 is provided with a first indication switch 6 and a second indication switch 7 for respectively indicating the opening and closing states of the two switching devices, and the first indication switch 6 and the second indication switch 7 are positioned on the movement path of the trigger rod 3; the following describes the triggering modes of the two indication switches:

When the first transmission structure 4 drives the handle to perform a closing action, the driving gear 2 drives the trigger rod 3 to move to the side far away from the second indication switch 7, and triggers the first indication switch 6 to act, so that the first indication switch 6 sends a signal for indicating one of the switch devices to close;

When the second transmission structure 5 drives the handle to perform a closing action, the driving gear 2 drives the trigger rod 3 to move to the side far away from the first indicating switch 6, and triggers the second indicating switch 7 to act, so that the second indicating switch 7 sends a signal for indicating the other switching device to close.

In the above embodiment, according to the driving gear 2, the handles of the two switch devices are respectively connected through the first transmission structure 4 and the second transmission structure 5, and the driving gear 2 is provided with the trigger lever 3 for triggering the first indication switch 6 and the second indication switch 7 respectively, when the dual-power switch works, the driving gear 2 drives the first transmission structure 4 or the second transmission structure 5 to execute the opening and closing actions of one group of switch devices, then the other group of switch devices are not operated and are in an initial opening and closing state, so as to realize the function of switching the two groups of switches, in the process, the driving gear 2 drives the trigger lever 3 to be separated from the second indication switch 7, and triggers the first indication switch 6 to act, so that the first indication switch 6 sends a signal for indicating that one switch device is in an opening and closing state, and the second indication switch 7 sends a signal for indicating that the other switch device is in the opening and closing state after being separated from the trigger lever 3.

As shown in fig. 2-3, the housing 1 includes a mounting cavity 11 for accommodating the driving gear 2, and a circuit board 12 disposed on the upper side of the mounting cavity 11, a moving slot 13 is formed on the circuit board 12 along a moving track of the trigger lever 3, the trigger lever 3 is disposed in the moving slot 13 in a penetrating manner, the first indicator switch 6 and the second indicator switch 7 are fixed on the circuit board 12 and are disposed at two ends of the moving slot 13, and are further preferably disposed, the moving slot 13 has an arc slot structure, the first indicator switch 6 and the second indicator switch 7 have key parts contacting with or separating from the trigger lever 3, and the first indicator switch 6 and the second indicator switch 7 in this embodiment are micro switches, respectively, so that when the key parts are pressed by the trigger lever 3, the micro switches are triggered to be turned on, and when the trigger lever 3 is separated, the micro switches are triggered to be turned off, so that the micro switches respectively send a closing indicator signal and a separating indicator signal. In this structural arrangement, when the driving gear 2 rotates, the triggering lever 3 is driven to move in the movement groove 13, and when the triggering lever 3 moves to one end of the movement groove 13, the first indication switch 6 is triggered to act, so that the first indication switch 6 is driven to send an indication signal for indicating one group of switching devices to be switched on, and the corresponding first transmission structure drives the handle of the switching device to be switched on; and when the trigger rod 3 moves to the other end of the movement groove 13, triggering the second indicating switch 7 to act, thereby driving the second indicating switch 7 to send an indicating signal for indicating the other group of switching devices to switch on, and the corresponding second transmission structure drives the handles of the switching devices to switch on.

The specific arrangement of the first transmission structure and the second transmission structure will be described in detail with reference to fig. 3 to 6:

The first transmission structure 4 comprises a first gear 41 rotatably arranged on the side wall of the mounting cavity 11 through a first rotating shaft 43, and a first transmission arm 42 for connecting a handle of one of the circuit breakers with the first gear 41, wherein the first transmission arm 42 is rotatably sleeved on the first rotating shaft 43, and the first gear 41 is meshed with the driving gear 2; correspondingly, the second transmission structure 5 comprises a second gear 51 rotatably arranged on the side wall of the mounting cavity 11 through a second rotating shaft 53, and a second transmission arm 52 for connecting the handle of the other circuit breaker with the second gear 51, wherein the second transmission arm 52 is rotatably sleeved on the second rotating shaft 53, and the second gear 51 is meshed with the driving gear 2. To sum up, the first transmission structure 4 and the second transmission structure 5 are configured in the same structure, wherein the first gear 41 and the second gear 51 are respectively provided with an arc-shaped travel slot 411, the first transmission arm 42 and the second transmission arm 52 respectively include a travel rod 421 penetrating through the travel slot 411, and a handle sleeve 422 extending out of the mounting cavity 11 and being in linkage fit with handles of two circuit breakers, two ends of the travel slot 411 are respectively a closing end and a separating end for pushing the travel rod 421 to move, the handle sleeve 422 and the travel rod 421 are respectively disposed at two ends of the first transmission arm 42 and the second transmission arm 52, and the first transmission arm 42 and the second transmission arm 52 are respectively sleeved on the handles of the circuit breakers through the handle sleeve 422 in a clamping manner to realize linkage. When the first transmission assembly executes the handle switching-on action of one group of switch devices, the driving gear 2 drives the first gear 41 to rotate, the switching-on end of the travel slot 411 pushes the travel rod 421, and then drives the first travel arm to drive the handle to realize switching-on rotation, after the handle is switched on in place, the travel rod 421 just moves to be positioned at the switching-off end of the travel slot 411, so that the preparation is made for the next switching-off of the handle, and the movement and force are transmitted between the first gear 41 and the first transmission arm 42 and between the second gear 51 and the second transmission arm 52 through the cooperation of the travel slot 411 and the travel rod 421. Therefore, when the driving gear 2 drives the first transmission assembly to perform switching-on operation, the second transmission assembly completes switching-off operation on the handle of the other group of switching devices, so that the two groups of switching devices are ensured to be mutually switched to perform switching-on and switching-off operation, and the two groups of switching devices are preferably circuit breakers and respectively control the main power supply circuit and the standby power supply circuit, so that the two groups of switching devices are controlled by the double power supply switch operating mechanism to realize switching-on and switching-off of the main power supply and the standby power supply.

As a preferred embodiment, the first gear 41, the second gear 51 and the driving gear 2 are respectively in a helical gear structure, the driving gear 2 is provided with a first tooth part 21 meshed with the first gear 41 and a second tooth part 22 meshed with the second gear 51, the first tooth part 21 and the first tooth part 21 are distributed at intervals along the circumferential direction, the triggering rod 3 is arranged on the peripheral edge of the driving gear 2 relative to the power shaft 20 and is positioned between the first tooth part 21 and the second tooth part 22, and the axial directions of the first gear 41 and the second gear 51 are perpendicular to the axial direction of the driving gear 2, so that the design can change the transmission directions of motion and force and finally transmit the torque of the driving gear 2 to the handle. The following describes the driving engagement between the first gear 41 and the second gear 51 and the drive gear 2: referring to fig. 4, when the driving gear 2 drives the first gear 41 to rotate through the first tooth portion 21, the second tooth portion 22 is driven to separate from the second gear 51 in the rotation process, so that the second transmission structure 5 performs the opening operation of one of the switching devices, and at this time, the first transmission structure 4 performs the opening and closing operation of the other switching device, so as not to drive the second transmission structure 5 to act; on the contrary, referring to fig. 5, when the driving gear 2 drives the second gear 51 to rotate through the second tooth portion, the first tooth portion 21 is driven to separate from the first gear 41 in the rotation process, so that the first transmission structure 4 performs the opening operation of one of the switch devices, and at this time, the second transmission structure 5 can perform the opening and closing operation of the other switch device, without driving the first transmission structure 4 to act, so that the switching functions of the two groups of switch devices can be realized by the alternate action.

As shown in fig. 3, the driving gear 2 is rotatably disposed in the mounting cavity 11 through a power shaft 20, the power shaft 20 and the driving gear 2 are coaxially and cooperatively disposed, two switch devices are respectively disposed on two sides of the housing 1, a housing cover covering the two switch devices is mounted on the housing 1, the power shaft 20 and the trigger rod 3 extend in the same direction and pass through the circuit board 12, the circuit board 12 is fixed on the housing 8 through screws and is opposite to the mounting cavity 11, an operating handle 81 connected with the power shaft 20 is mounted on the housing, and the operating handle 81 is rotated to drive the driving gear 2 to rotate in the clockwise or counterclockwise direction, so as to drive the first transmission structure 4 and the second transmission structure 5 to perform switching-on/switching-off actions of the corresponding handles respectively.

As shown in fig. 7, in order to realize the electric control of the dual power switch, as a preferred scheme, the housing 1 includes a motor slot with an opening facing the bottom thereof, and a bottom plate 14 covering the motor slot, in order to realize the electric operation control of the dual power switch, a driving motor 15 is installed in the motor slot, the driving motor 16 is installed in the motor slot in a positioning manner through a plurality of positioning shafts 15, the positioning shafts 15 are disposed on the bottom surface of the motor slot, positioning holes matched with the positioning shafts are formed in a panel of the driving motor 16, an output shaft of the driving motor 16 is connected with the power shaft, and when the bottom plate 14 covers the motor slot, the bottom plate 14 forms a limiting fit with the driving motor, namely, the driving motor located in the motor slot is pressed in a limiting manner through the bottom plate 14, so that the driving motor 16 is installed in the motor slot in a limiting manner, and the installation structure is simple and the installation is convenient.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The double-power-supply conversion switch operation structure comprises a shell frame (1), a driving gear (2) rotatably arranged in the shell frame (1), and a first transmission structure (4) and a second transmission structure (5) which are connected with the driving gear (2) and respectively drive handles of two groups of switch devices to execute switching-on or switching-off actions, wherein the driving gear (2) drives the first transmission structure (4) or the second transmission structure (5) to execute switching-off or switching-on actions of the handles; the method is characterized in that: the driving gear (2) is provided with a trigger rod (3) extending along the axial direction of the driving gear, the shell frame (1) is provided with a first indication switch (6) and a second indication switch (7) for respectively indicating the opening and closing states of the two switch devices, and the first indication switch (6) and the second indication switch (7) are positioned on the movement path of the trigger rod (3);

When the first transmission structure (4) drives the handle to execute a closing action, the driving gear (2) drives the trigger rod (3) to move to the side far away from the second indication switch (7) and trigger the first indication switch (6) to act;

When the second transmission structure (5) drives the handle to execute a closing action, the driving gear (2) drives the trigger rod (3) to move to the side far away from the first indication switch (6) and trigger the second indication switch (7) to act.

2. The dual power transfer switch operating structure of claim 1, wherein: the shell frame (1) comprises an installation cavity (11) for accommodating the driving gear (2), and a circuit board (12) arranged on the upper side of the installation cavity (11), wherein a movement groove (13) is formed in the circuit board (12) along the movement track of the trigger rod (3), the trigger rod (3) is arranged in the movement groove (13) in a penetrating mode, and the first indication switch (6) and the second indication switch (7) are fixed on the circuit board (12) and are arranged at two ends of the movement groove (13) in a separated mode.

3. A dual power transfer switch operating structure as claimed in claim 2, wherein: the movement groove (13) is of an arc-shaped groove structure, and the first indication switch (6) and the second indication switch (7) are respectively provided with a key part which is contacted with or separated from the trigger rod (3).

4. A dual power transfer switch operating structure as claimed in claim 2, wherein: the driving gear (2) is rotatably arranged in the mounting cavity (11) through the power shaft (20), the two switching devices are respectively located at two sides of the shell frame (1), a shell cover (8) for covering the two switching devices is arranged on the shell frame (1), the power shaft (20) and the trigger rod (3) extend in the same direction and penetrate through the circuit board (12), and an operating handle (81) connected with the power shaft (20) is arranged on the shell cover.

5. A dual power transfer switch operating structure as claimed in any one of claims 2-4 wherein:

The first transmission structure (4) comprises: a first gear (41) arranged on the side wall of the mounting cavity (11) is rotated through a first rotating shaft (43), and a first transmission arm (42) for connecting a handle of one breaker with the first gear (41), wherein the first transmission arm (42) is rotatably sleeved on the first rotating shaft (43), and the first gear (41) is meshed with the driving gear (2);

The second transmission structure (5) comprises: the second rotating shaft (53) is used for rotating a second gear (51) arranged on the side wall of the mounting cavity (11), and a second transmission arm (52) connected with the handle of the other breaker and the second gear (51), the second transmission arm (52) is rotatably sleeved on the second rotating shaft (53), and the second gear (51) is meshed with the driving gear (2).

6. The dual power transfer switch operating structure of claim 5, wherein: the first gear (41) and the second gear (51) are respectively provided with an arc-shaped travel groove (411), the first transmission arm (42) and the second transmission arm (52) respectively comprise a travel rod (421) penetrating through the travel groove (411), and two ends of the travel groove (411) are respectively a closing end and a separating end for pushing the travel rod (421) to move.

7. The dual power transfer switch operating structure of claim 6, wherein:

The first transmission arm (42) and the second transmission arm (52) respectively comprise a handle sleeve (422) which extends out of the installation cavity (11) and is in linkage fit with handles of two circuit breakers, and the handle sleeve (422) and the travel rod (421) are respectively arranged at two ends of the first transmission arm (42) and the second transmission arm (52).

8. The dual power transfer switch operating structure of claim 7, wherein: the first gear (41), the second gear (51) and the driving gear (2) are respectively of helical gear structures, a first tooth part (21) meshed with the first gear (41) and a second tooth part (22) meshed with the second gear (51) are arranged on the driving gear (2), and the axial directions of the first gear (41) and the second gear (51) are perpendicularly intersected with the axial direction of the driving gear (2).

9. The dual power transfer switch operating structure of claim 8, wherein: the trigger lever (3) is arranged on the peripheral edge of the drive gear (2) relative to the power shaft (20) and is located between the first tooth (21) and the second tooth (22).

10. A dual power transfer switch operating structure as claimed in claim 2, wherein: the shell frame (1) comprises a motor groove with an opening facing the bottom of the shell frame, and a bottom plate (14) covering the motor groove, wherein a driving motor (16) is positioned and installed in the motor groove through a plurality of positioning shafts (15), and the bottom plate (14) forms limit fit with the driving motor when fixedly covering the motor groove.