Electric driving equipment for drawer type switch of circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to electric driving equipment for a drawer type switch of a circuit breaker. The device comprises a housing and an interlocking module installed in the housing. An indicating piece is arranged in a drawer base of the switch, the indicating piece reflects the position state of a switch body of the switch through the rotation angle, the indicating piece comprises an indicating protrusion, the interlocking module comprises a locking matching rod arranged in a sliding mode, and three clamping grooves are formed in the end, close to the indicating piece, of the locking matching rod. The indicating protrusions are clamped into the corresponding clamping grooves. According to the utility model, three position signals in the drawer seat are obtained through interlocking cooperation between the interlocking module arranged thereon and the rotating indicating piece in the drawer seat, the structure is reliable, the position signals can be accurately obtained, and the working requirements of the electric driving device are met.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to an electric drive device for a drawer-type switch of a circuit breaker. Background Art

[0002] Drawer-type switches are common low-voltage electrical appliances that are used to distribute electrical energy and protect lines and equipment from hazards such as short circuits, overloads, single-phase grounding, and undervoltage. They are widely used in power distribution systems because of their easy inspection and maintenance.

[0003] The electric drive device for the switch is a device that can automatically drive the switch body to move in the drawer seat through remote control, and is adapted to the interlocking and indication functions of the original drawer seat three-position device.

[0004] The operator can use the electric drive device for the switch to replace the existing handle to realize the remote operation of the drawer switch and complete the movement of the switch body in the drawer seat. By increasing the working distance, the life safety of the operator is greatly guaranteed.

[0005] The electric drive equipment for switches mainly includes electric drive devices, remote controls, etc. Among them, the locking lever is an important part of the electric drive device. The locking lever matches the drawer seat indicator. When the indicator rotates to the corresponding position, it can trigger the locking lever linkage; at the same time, the locking lever can also trigger the on and off of the motor power supply circuit. When the indicator triggers the locking lever to move, the motor power supply circuit can be disconnected and the motor stops. Therefore, the structure of the locking lever and the drawer seat indicator directly affects the performance of the interlocking cooperation. How to design a locking lever and indicator with a reliable structure has become a technical problem that needs to be solved urgently. Utility Model Content

[0006] The utility model aims to solve the problems existing in the background technology and proposes an electric drive device for a drawer-type switch of a circuit breaker. The three-position signals in the drawer seat are obtained by interlocking cooperation between an interlocking module arranged thereon and a rotating indicator in a drawer seat. The structure is reliable and the position signals can be accurately obtained to meet the working requirements of the electric drive setting.

[0007] The technical solution of the utility model is an electric drive device for a drawer-type switch of a circuit breaker, comprising a shell and an interlocking module installed in the shell; an indicator is arranged in the drawer seat of the switch, the indicator reflects the position state of the switch body of the switch by a rotation angle, the indicator comprises an indicating protrusion, the interlocking module comprises a locking matching rod arranged slidably, one end of the locking matching rod close to the indicating rod forms three snap-in grooves, and when the switch body moves to the separation, test and connection positions, the indicating protrusion snaps into the corresponding snap-in grooves.

[0008] In a specific embodiment of the present invention, the indicator further comprises a first end surface, the first end surface is located at an end of the indicator facing the outside of the drawer seat, and the indicator protrusion protrudes outward from the first end surface.

[0009] In a specific embodiment of the present invention, the indicating protrusion is in the shape of an arrow, and the indicating protrusion includes an arrow body portion and an arrowhead portion.

[0010] In another specific embodiment of the present invention, the indicator also includes a driven portion, which is inserted into a carriage of a transmission system of the drawer seat, so that when the carriage moves, the indicator is driven to rotate through the driven portion.

[0011] In another specific embodiment of the present utility model, the locking mating rod has a second end surface on one end facing the indicating member, and the snap-in groove is located on the outer side of the second end surface.

[0012] In another specific embodiment of the utility model, three snap-in grooves are angled apart from each other from the same rotation center, and each snap-in groove is retracted inward from the edge of the second end face at its head to form an arc-shaped cavity, the arc-shaped cavity is used to accommodate the arrow head portion, and the snap-in groove is used to accommodate the arrow body portion.

[0013] In a further specific embodiment of the present invention, the three snap-in grooves intersect at the center of the second end surface, and correspondingly, the rotation center of the indicator is the center of the first end surface.

[0014] In a further specific embodiment of the present invention, the depth of the snap-in groove is greater than the protrusion height of the indicating protrusion; and a chamfer is provided at the notch of the snap-in groove.

[0015] In a more specific embodiment of the present invention, the depth of the snap-in groove is 4CM, the height of the indicating protrusion is 3CM, and adjacent snap-in grooves form an angle of 45°.

[0016] In yet another specific embodiment of the present invention, the electric drive device also includes a motor, a gear set and a drive head assembly. The interlocking module receives the position state of the switch body by cooperating with an indicator in the drawer seat to control the on and off of the motor. The motor is transmission connected to the gear set, the gear set is transmission connected to the drive head assembly, and the drive head assembly is connected to the transmission system in the drawer seat.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model obtains three position signals in the drawer seat through the interlocking cooperation between the interlocking module arranged thereon and the rotating indicator in the drawer seat. The utility model has a reliable structure and can accurately obtain position signals to meet the working requirements of the electric drive setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Is a perspective view of the drawer - type switch according to the present utility model;

[0020] Figure 2 Is a schematic diagram of the fixed installation of the drawer base and the electric drive device according to the present utility model;

[0021] Figure 3 Is an assembly schematic diagram of the drawer base and the electric drive device according to the present utility model;

[0022] Figure 4 Is an assembly schematic diagram of the components inside the housing of the electric drive device according to the present utility model;

[0023] Figure 5 Is an exploded schematic diagram of the interlock module according to the present utility model;

[0024] Figure 6 Is a perspective view of one side of the interlock module according to the present utility model;

[0025] Figure 7 Is a schematic diagram of the cooperation between the drive head assembly of the interlock module and the transmission shaft in the drawer base according to the present utility model;

[0026] Figure 8 Is a perspective view of the locking engagement rod of the interlock module according to the present utility model;

[0027] Figure 9 Is a perspective view of the slide plate of the interlock module according to the present utility model;

[0028] Figure 10 Is a schematic diagram of the installation of the electromagnet of the interlock module according to the present utility model;

[0029] Figure 11 Is a perspective view of the locking member of the interlock module according to the present utility model;

[0030] Figure 12 Is a view of the interlock module in one direction according to the present utility model;

[0031] Figure 13 Is a view of the interlock module in another direction according to the present utility model;

[0032] Figure 14 Is a schematic diagram of the indicating member according to the present utility model;

[0033] Figure 15 Is a partial schematic diagram of the locking engagement rod according to the present utility model.

[0034] Reference numerals: 1, drawer seat; 11, transmission shaft; 111, mating head; 12, indicating member; 121, first end face; 122, indicating protrusion; 1221, arrow body part; 1222, arrow head part; 123, driven part; 2, switch body; 3, electric drive device; 31, housing; 311, bottom plate; 312, cover plate; 32, interlock module; 321, bracket; 322, locking mating rod; 3221, sliding mating end; 3222, clamping protrusion; 3223, clamping groove; 3224, second end face; 3225, arc-shaped cavity; 323, slide bar; 3231, elastic member; 3232, striking end; 324, locking member; 3241, elastic reset member; 3242, convex shaft; 325, slide plate; 3251, sliding groove; 3252, top plate; 3253, position pit; 326, signal switch; 327, electromagnet; 3271, striking rod; 33, motor; 34, gear set; 35, drive head assembly; 351, fixing plate; 352, drive head; 36, signal module; 100, slide bar head; 200, remote control handle. Detailed implementation manners

[0035] The following describes in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings. However, the applicant's description of the embodiments is not a limitation on the technical solutions. Any change in form rather than in essence based on the concept of the present utility model should be regarded as within the protection scope of the present utility model.

[0036] In the following description, any concepts related to directions or orientations such as up, down, left, right, front, and back are based on the positions shown in the corresponding accompanying drawings. It is only for the convenience of describing the technical solutions provided by the present utility model in conjunction with the accompanying drawings and for simplifying the description. Therefore, it should not be construed as a special limitation on the technical solutions provided by the present utility model.

[0037] Embodiment 1

[0038] Please refer to Figure 1 , Figure 6 , Figure 12 , Figure 13, the present utility model relates to an electric drive device for a circuit breaker drawer - type switch. The electric drive device 3 is installed on the outer side of the drawer base 1. The described outer side means that the electric drive device 3 is located outside the housing of the drawer base 1, rather than integrated inside the drawer base 1. Specifically, in combination with the attached drawings, the electric drive device 3 is installed on the outer side in front of the drawer base 1, that is, in the direction facing the operator. The electric drive device 3 is used to drive the transmission system inside the drawer base 1 to act, and then the transmission system drives the switch body 2 to move relative to the drawer base 1. The electric drive device 3 is a separate device, and it can realize the switching between the fixed state and the disassembled state with the drawer base 1. Usually, the electric drive device 3 is connected to a remote control handle 200. The remote control handle 200 can control the operation of the electric drive device 3, and the electric drive device 3 also needs to be powered on, for example, connected through a plug. When the electric drive device 3 and the drawer base 1 are in the disassembled state, it does not affect the normal operation of the drawer - type switch. It's just that when driving the switch body 2 to move inside the drawer base 1, manual operation is required.

[0039] As Figure 2 shown, the electric drive device 3 is installed on the outer side of the drawer base 1. A sliding rod head 100 protrudes from the electric drive device 3. The sliding rod head 100 cooperates with the switch body 2, that is, when the switch body 2 moves out of the drawer base 1, the switch body 2 and the sliding rod head 100 move synchronously.

[0040] As Figure 3 shown, the electric drive device 3 includes a housing 31 and other components installed inside the housing 31. For example, an interlock module 32, a motor 33, and a gear set 34.

[0041] Continue to see Figure 3 , the drawer base 1 includes a transmission system for driving the switch body 2 to move inside the drawer base 1. Usually, the transmission system includes a transmission shaft 11, a drag plate, a rotating shaft, etc. The transmission shaft 11 is driven to rotate, and then drives the drag plate to move. After the drag plate moves, it drives the rotating shaft to rotate. After the rotating shaft rotates, it drives the movement of the switch body 2. Usually, the transmission shaft 11 is driven to rotate manually by the drive handle of the drawer base 1. Of course, the transmission shaft 11 can also be driven to rotate by the electric drive device 3 in this solution.

[0042] An indicator 12 is also provided in the drawer seat 1. The indicator 12 is used to display the position state of the switch body 2. Specifically, it reflects the above position state through the rotation angle. The indicator 12 includes an indicator protrusion 122. The interlocking module 32 includes a slidably arranged locking matching rod 322. The locking matching rod 322 forms three snap-in grooves 3223 at one end close to the indicator 12. When the switch body 2 moves to the separation, test, and connection positions, the indicator protrusion 122 snaps into the corresponding snap-in grooves 3223. The specific description and function of the transmission system in the drawer seat 1 and the indicator 12 can be seen in the description of patent CN206758931U. The indicator 12 in this patent is the transmission member in the patent description, and the transmission shaft 11 is the screw rod in the patent description.

[0043] like Figure 4 As shown, an interlocking module 32, a motor 33, a gear set 34, a drive head assembly 35 and a signal module 36 are arranged inside the housing 31. The interlocking module 32 receives the position state of the switch body 2 by cooperating with the indicator 12 in the drawer seat 1 to control the on and off of the motor 33. The motor 33 is connected to the gear set 34 in a transmission manner, and the gear set 34 is connected to the drive head assembly 35 in a transmission manner. The signal module 36 is used for signal transmission between the electric drive device 3 and the outside.

[0044] Continue to see Figure 3 and Figure 4 The housing 31 includes a bottom plate 311 and a cover plate 312, and the bottom plate 311 and the cover plate 312 are combined to form the housing 31. Usually, the bottom plate 311 and the cover plate 312 are both made of metal plates, and the housing 31 is in a flat square box shape.

[0045] The interlocking module 32, the motor 33, the gear set 34, the drive head assembly 35 and the signal module 36 are all mounted on the cover plate 312. The cover plate 312 is fixedly mounted with the bottom plate 311 by screws. Preferably, the bottom plate 311 has first bent plates on both sides, and the cover plate 312 has second bent plates on both sides. More specifically, a pair of first bent plates are on the left and right sides, and a pair of second bent plates are on the front and back sides. The pair of first bent plates and the pair of second bent plates constitute the four side walls of the housing 31.

[0046] like Figure 5 , Figure 6As shown in the figure, the interlock module 32 includes a bracket 321, a locking engagement rod 322, a sliding rod 323, a locking member 324, a sliding plate 325, a signal switch 326, and an electromagnet 327. The bracket 321 includes a pair of bracket plates which are spaced apart from each other and are fixedly spaced by a fixed shaft, and the bracket 321 is fixedly installed in the housing 31. The locking engagement rod 322 is slidably disposed on the bracket 321. The locking engagement rod 322 cooperates with the indicating member 12 in the drawer seat 1. The sliding rod 323 is slidably disposed on the cover plate 312. One end of the sliding rod 323 is provided with an elastic member 3231, and the other end is provided with a striking end 3232 that cooperates with the electromagnet 327. The elastic member 3231 is preferably a tension spring. One end of the elastic member 3231 is connected to the sliding rod 323, and the other end is fixedly disposed, thereby providing a driving force for the sliding rod 323 to move in one direction. The direction of the driving force is specifically towards the drawer seat 1. Since the upper part of the locking engagement rod 322 is clamped with the sliding rod 323, when the elastic member 3231 applies a force to the sliding rod 323, a force is simultaneously applied to the locking engagement rod 322 to approach the indicating member 12 in the drawer seat 1.

[0047] The locking member 324 is a lever member. The locking member 324 is rotatably disposed on the bracket 321. An elastic reset member 3241 is provided on the locking member 324, and the elastic reset member 3241 provides a restoring rotational force for the locking member 324. The locking member 324 is used to lock the locking engagement rod 322.

[0048] The sliding plate 325 is also slidably disposed on the bracket 321. Specifically, it is slidably disposed on the outside of the bracket 321. When the electric drive device 3 is installed in place, the sliding plate 325 moves synchronously with the switch body 2. Specifically, a sliding rod head 100 of the sliding plate 325 is connected to the switch body 2 by, for example, a abutting manner. In order to ensure the abutting relationship between the two, the sliding plate 325 is acted upon by an elastic member to ensure the abutting relationship between the two, that is, to ensure that the two move synchronously in the front-rear direction.

[0049] As Figure 5 、 Figure 6 and Figure 12 As shown in the figure, the signal switch 326 is used to receive the trigger of the locking engagement rod 322, realize the on-off of the motor 33, and prevent the motor 33 from continuing to operate and causing self-burning when the switch body 2 is in the locked state.

[0050] As Figure 4 As shown in the figure, the signal module 36 is used to connect with an external signal and simultaneously indicate the working state of the electric drive device 3 to the operator, that is, the position state of the switch body 2.

[0051] As Figure 3 、 Figure 7As shown, the driving head assembly 35 includes a fixing plate 351 and a driving head 352. The fixing plate 351 is installed between the bottom plate 311 and the cover plate 312, while the driving head 352 is rotatably arranged on the fixing plate 351. Correspondingly, a transmission shaft 11 is provided in the drawer base 1. One end of the transmission shaft 11 close to the driving head 352 is provided with a fitting head 111, and the fitting head 111 is in plug-in fit with the driving head 352.

[0052] As Figure 5 , Figure 6 , Figure 8 shown, the locking and fitting rod 322 is usually made of an insulating material, and the main body of the locking and fitting rod 322 is in the shape of a round rod. Sliding fitting ends 3221 extend outwards on both sides of the locking and fitting rod 322, and the sliding fitting ends 3221 are used for the sliding connection between the locking and fitting rod 322 and the bracket 321. A clamping protrusion 3222 is further provided above the locking and fitting rod 322, and the clamping protrusion 3222 is clamped into the sliding rod 323, so as to realize the synchronous sliding movement between the locking and fitting rod 322 and the sliding rod 323. One end of the locking and fitting rod 322 close to the drawer base 1 forms three clamping grooves 3223, and the clamping grooves 3223 are used for clamping and fitting with the indicating member 12 in the drawer base 1, that is, when the switch body 2 moves to the separation, test, and connection positions, the clamping grooves 3223 are clamped into the head of the indicating member 12. During the above process, the locking and fitting rod 322 moves a clamping distance towards the indicating member 12.

[0053] As Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 9 shown, the sliding plate 325 is slidably arranged on the outside of the bracket 321. The sliding plate 325 is usually processed from a metal plate. A sliding groove 3251 is provided on the sliding plate 325, and the sliding groove 3251 is used for the sliding arrangement of the sliding plate 325 to ensure the reliability of the movement. A top plate 3252 formed by bending is further provided on the top of the sliding plate 325, and a position pit 3253 is provided at the bottom of the sliding plate 325. The top plate 3252 is used to drive the microswitch of the signal module 36 to output a position state signal. A sliding rod head 100 is provided at one end of the sliding plate 325, and the part of the sliding rod head 100 protruding from the cover plate 312 is connected to the switch body 2 to ensure the synchronous movement of the two.

[0054] As Figure 6 , Figure 10 shown, the electromagnet 327 is also installed on the cover plate 312 and corresponds to the sliding rod 323. After the electromagnet 327 is energized, the striking rod 3271 on the electromagnet 327 can strike the striking end 3232 of the sliding rod 323, so as to push the sliding rod 323 to move.

[0055] As Figure 5 , Figure 6 ,Figure 11 As shown, the locking member 324 is processed from a metal sheet. An elastic reset member 3241 is sleeved on the transmission shaft of the locking member 324. Preferably, the elastic reset member 3241 is a torsion spring. A convex shaft 3242 is provided on one side of the locking member 324. The convex shaft 3242 protrudes out of the bracket 321 and abuts against the position pit 3253 of the slide plate 325.

[0056] Please continue to refer to Figures 1 to 11 and combine with Figure 12 , Figure 13 , the working process of the interlocking module 32 of the drawer-type switch of the present utility model is as follows:

[0057] When the switch body 2 is in the separated position in the drawer base 1, at this time, the engaging groove 3223 of the locking engagement rod 322 and the indicating member 12 in the drawer base 1 are at an angle where they can be engaged. Under the traction of the elastic member 3231, the sliding rod 323 drives the locking engagement rod 322 to be engaged with the indicating member 12. Due to the forward movement of the locking engagement rod 322, the oppression on the signal switch 326 is released, and the signal switch 326 performs on-off switching, cutting off the power supply to the motor 33, and the motor 33 stops rotating. At this time, it is in the locked state.

[0058] In the above locked state, the electromagnet 327 receives a signal and acts. The electromagnet 327 pushes the sliding rod 323 backward. Of course, the sliding rod 323 can also be pulled manually to act. During the backward movement of the sliding rod 323, the acting force of the elastic member 3231 needs to be overcome.

[0059] Since the engaging protrusion 3222 of the locking engagement rod 322 is engaged into the sliding rod 323, and the sliding rod 323 and the locking engagement rod 322 are in a synchronous movement relationship. When the sliding rod 323 moves backward, the locking engagement rod 322 also moves backward. At this time, the locking engagement rod 322 is disengaged from the engaging relationship with the indicating member 12, and because of the backward movement of the locking engagement rod 322, the signal switch 326 is also oppressed to cause its state to switch, supplying power to the motor 33.

[0060] At this time, since the switch body 2 is in the separated position, the slide plate 325 that moves synchronously with the switch body 2 is in the corresponding position. At this time, the position pit 3253 below the slide plate 325 corresponds to the convex shaft 3242 on the locking member 324. At this time, the locking member 324 can swing upward and engage with the locking engagement rod 322 by means of a buckle to prevent the locking engagement rod 322 from moving forward.

[0061] As the motor 33 works, the switch body 2 continues to move relative to the drawer base 1, and the slide plate 325 also moves. The position pit 3253 no longer corresponds to the convex shaft 3242, and the convex shaft 3242 is pressed down, thereby releasing the buckle engagement with the locking engagement rod 322. The locking engagement rod 322 is driven by the sliding rod 323 to closely adhere to the indicating member 12 in the drawer base 1.

[0062] The above process only describes one cycle of locking and unlocking of the interlock module 32 in the separated position. For the three positions of separation, test, and connection, each position has a cycle of locking and unlocking. Since the working methods are the same, they will not be elaborated here.

[0063] For the switch body 2, one is the entry process through the positions of separation, test, and connection; the other is the exit process through connection, test, and separation. The cycles of its locking and unlocking are the same, and the difference lies in the rotation direction of the motor 33, which is controlled by the circuit.

[0064] As Figure 14 , it is a schematic diagram of the indicating member 12. The indicating member 12 is usually made of plastic. The indicating member 12 includes a first end face 121 and an indicating protrusion 122. The first end face 121 is located at one end of the indicating member 12 facing the outside of the drawer seat 1. Preferably, the first end face 121 is circular. The indicating protrusion 122 protrudes outward from the first end face 121, so that the observer can determine the position state of the switch body 2 indicated by the indicating member 12 through observation. Preferably, the indicating protrusion 122 is arrow-shaped. The indicating protrusion 122 includes an arrow body portion 1221 and an arrow head portion 1222. The arrow body portion 1221 and the arrow head portion 1222 are connected to form an indicating protrusion 122.

[0065] The indicating member 12 further includes a driven portion 123. The driven portion 123 is inserted into the drag plate of the transmission system of the drawer seat 1. Thus, when the drag plate moves, the indicating member 12 is driven to rotate through the driven portion 123. The hand-driven portion 123 is a curved edge, and the position of the curved edge corresponds to that of the drag plate. Thus, when the drag plate is in different positions, it is reflected as the indicating member 12 rotating different angles.

[0066] As Figure 15 , it is a schematic diagram of the head of the locking mating rod 322. One end of the locking mating rod 322 facing the indicating member 12 has a second end face 3224. The engaging groove 3223 is located outside the second end face 3224, that is, on the side that mates with the indicating member 12. Specifically, there are multiple protruding ribs on the second end face 3224, and the multiple protruding ribs form the side walls of the engaging groove 3223. There are three engaging grooves 3223, which are angularly extended from the same rotation center. Each engaging groove 3223 indents inward from the edge of the second end face 3224 at its head to form an arc-shaped cavity 3225, while the tail of the engaging groove 3223 is flush with the edge of the second end face 3224. The arc-shaped cavity 3225 is used for accommodating the arrow head portion 1222, and the engaging groove 3223 is used for accommodating the arrow body portion 1221. In short, the engaging groove 3223 is matched with the shape of the indicating protrusion 122 to facilitate the engaging fit between the two.

[0067] There are three card slots 3223, which respectively correspond to the separation, test, and connection positions. That is, when the switch body 2 is driven by the transmission system of the drawer seat 1 to one of the separation, test, and connection positions, the indicating member 12 also rotates to a corresponding angle, and the indicating protrusion 122 thereon also rotates to an angle corresponding to one of the card slots 3223. At this time, the indicating protrusion 122 can be driven to be inserted into the corresponding card slot 3223 to complete the locking after reaching the position.

[0068] The three card slots 3223 intersect at the center of the circle of the second end face 3224. Correspondingly, the rotation center of the indicating member 12 is the center of the circle of the first end face 121. Preferably, the depth of the card slot 3223 is greater than the protrusion height of the indicating protrusion 122. Thus, when the two are in the inserted state, the second end face 3224 abuts against the notch of the card slot 3223, that is, the second end face 3224 abuts against the rib protruding from the second end face 3224. For the convenience of the insertion fit of the two, there is a chamfer at the notch of the card slot 3223.

[0069] More preferably, the depth of the card slot 3223 is 3 to 5 cm. Preferably, the depth of the card slot 3223 is 4 cm, and the protrusion height of the indicating protrusion 122 is 3 cm. The adjacent card slots 3223 form an angle of 45°.

[0070] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An electric drive device for a circuit breaker drawer switch, comprising a housing (31) and an interlocking module (32) installed in the housing (31); an indicator (12) is provided in the drawer seat (1) of the switch, and the indicator (12) reflects the position state of the switch body (2) of the switch by rotating the angle, characterized in that: The indicator (12) includes an indicator protrusion (122), and the interlocking module (32) includes a slidably arranged locking matching rod (322). The locking matching rod (322) forms three snap-in grooves (3223) at one end close to the indicator (12). When the switch body (2) moves to the separation, test, and connection positions, the indicator protrusion (122) snaps into the corresponding snap-in grooves (3223).

2. The electric drive device for a circuit breaker drawer switch according to claim 1, characterized in that: The indicator (12) further comprises a first end surface (121), the first end surface (121) being located at an end of the indicator (12) facing the outside of the drawer seat (1), and the indicator protrusion (122) protruding outward from the first end surface (121).

3. The electric drive device for a circuit breaker drawer switch according to claim 2, characterized in that: The indicating protrusion (122) is in the shape of an arrow, and comprises an arrow body portion (1221) and an arrowhead portion (1222).

4. The electric drive device for a circuit breaker drawer switch according to claim 3, characterized in that: The indicator (12) further comprises a driven part (123), which is inserted into a carriage of a transmission system of the drawer seat (1), so that when the carriage moves, the driven part (123) drives the indicator (12) to rotate.

5. The electric drive device for a circuit breaker drawer switch according to claim 3, characterized in that: The end of the locking and matching rod (322) facing the indicating member (12) has a second end surface (3224), and the snap-in groove (3223) is located outside the second end surface (3224).

6. The electric drive device for a circuit breaker drawer switch according to claim 5, characterized in that: The three snap-in grooves (3223) are extended at an angle from the same rotation center. Each snap-in groove (3223) is indented inward from the edge of the second end surface (3224) at its head to form an arc-shaped cavity (3225). The arc-shaped cavity (3225) is used to accommodate the arrowhead portion (1222), while the snap-in groove (3223) is used to accommodate the arrow body portion (1221).

7. The electric drive device for a circuit breaker drawer switch according to claim 6, characterized in that: The three snap-in grooves (3223) intersect at the center of the second end surface (3224), and correspondingly, the rotation center of the indicator (12) is the center of the first end surface (121).

8. The electric drive device for a circuit breaker drawer switch according to claim 2, characterized in that: The depth of the snap-in groove (3223) is greater than the protrusion height of the indicating protrusion (122); and a chamfer is provided at the notch of the snap-in groove (3223).

9. The electric drive device for a circuit breaker drawer switch according to claim 8, characterized in that: The depth of the snap-in groove (3223) is 4CM, the height of the indicating protrusion (122) is 3CM, and adjacent snap-in grooves (3223) form an angle of 45°.

10. The electric drive device for a circuit breaker drawer switch according to claim 8, characterized in that: The electric drive device (3) also includes a motor (33), a gear set (34) and a drive head assembly (35); the interlocking module (32) receives the position state of the switch body (2) by cooperating with the indicator (12) in the drawer seat (1) to control the on and off of the motor (33); the motor (33) is connected to the gear set (34) in a transmission manner; the gear set (34) is connected to the drive head assembly (35) in a transmission manner; and the drive head assembly (35) is connected to the transmission system in the drawer seat (1).

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