Drawer type switch

Abstract

A drawer type switch belongs to the technical field of low-voltage electric appliances. Comprising a drawer base, a switch body and an electric driving device, and the electric driving device is installed on the outer side of the drawer base and drives the drawer base to act to drive the switch body to move relative to the drawer base. The electric driving device comprises a shell, an interlocking module, a motor, a gear set and a driving head assembly, the interlocking module, the motor, the gear set and the driving head assembly are installed in the shell, the interlocking module is matched with an indicating piece in the drawer base to receive the position state of the switch body so as to control on-off of the motor, the motor is in transmission connection with the gear set, and the gear set is in transmission connection with the driving head assembly. And the driving head assembly is connected with a transmission system in the drawer seat. The switch has the advantages that the drawer base is automatically operated to be pushed in and pulled out of the switch body through remote control, and interlocking and indicating functions of an original drawer base three-position device can be adapted.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and in particular relates to a drawer-type switch. Background Art

[0002] Drawer-type switches are widely used in low-voltage systems due to their isolation capabilities, ease of maintenance, and quick replacement. Currently, universal circuit breaker drawers typically feature a three-position interlock, allowing the breaker to be closed or opened only in the "connect," "test," and "disconnect" positions. To facilitate operation, circuit breakers are equipped with a three-position indicator to visually display the breaker's current status. Currently, extending or withdrawing the switch body still relies on the operator standing in front of the breaker and using a hand crank. However, as a large-capacity switch component, arc flash during operation is a major hazard. Once an arc flash occurs, it instantly releases intense heat, light, and pressure waves, which can damage the cabinet and equipment within, burn and shock maintenance personnel, and in severe cases, cause casualties. Common techniques to reduce the risk of arc flash include increasing the working distance, reducing the short-circuit current, and increasing the spacing between conductors.

[0003] In view of the above-mentioned prior art, it is necessary to reasonably improve the existing drawer-type switch structure. To this end, the applicant has made a useful design, and the technical solution to be introduced below is produced under this background. Utility Model Content

[0004] The task of the utility model is to provide a drawer-type switch which can automatically operate the movement of the switch body in the drawer seat through remote control and can adapt to the interlocking function of the original drawer seat three-position device.

[0005] The technical solution of the utility model is a drawer-type switch, comprising a drawer seat, a switch body and an electric drive device. The electric drive device is installed on the outside of the drawer seat and drives the switch body to move relative to the drawer seat. An indicator is provided in the drawer seat to indicate the position state of the switch body by rotation. The electric drive device receives the position signal of the indicator to control the on and off of the motor inside the electric drive device, so that the electric drive device matches the three-position signals of the circuit breaker.

[0006] In a specific embodiment of the present invention, the electric drive device further includes a housing, and an interlocking module, a gear set, a drive head assembly, and a signal module installed in the housing;

[0007] The interlock module cooperates with the indicator in the drawer seat to receive the position status of the switch body to control the on and off of the motor;

[0008] The motor is connected to the gear set, the gear set is connected to the drive head assembly, and the drive head assembly is connected to the transmission system in the drawer seat; the signal module is used for signal transmission between the electric drive device and the outside.

[0009] In a specific embodiment of the present invention, the interlocking module includes a bracket, a locking mating rod, a sliding rod, a locking member, a sliding plate, a signal switch and an electromagnet;

[0010] The bracket is fixedly installed in the housing, the locking matching rod and the slide are slidably arranged on the bracket, and the slide is slidably arranged on the housing; the locking member is rotatably arranged on the bracket, and the locking matching rod and the slide are fixedly arranged;

[0011] The locking mating rod triggers the signal switch to switch the power supply circuit of the motor on and off, and the electromagnet is used to drive the reset action of the slide.

[0012] In another specific embodiment of the present invention, the shell includes a bottom plate and a cover plate, and the bottom plate and the cover plate are combined to form the shell.

[0013] In another specific embodiment of the present invention, the bracket includes a pair of bracket plates, which are spaced apart from each other; an elastic member is provided at one end of the slide rod, and a striking end cooperating with the electromagnet is provided at the other end, one end of the elastic member is connected to the slide rod, and the other end is fixed; the elastic member gives the slide rod a driving force to move to one side, and the direction of the driving force is toward the drawer seat. Since the upper part of the locking mating rod is engaged with the slide rod, when the elastic member applies force to the slide rod, the locking mating rod is exerted with a force to approach the indicator member in the drawer seat.

[0014] In another specific embodiment of the present invention, an elastic reset member is provided on the locking member, and the elastic reset member provides a restoring rotational force for the locking member, and the locking member is used to lock the locking matching rod.

[0015] In another specific embodiment of the present invention, a sliding groove is provided on the slide plate, and the sliding groove is used for sliding setting of the slide plate; a bent top plate is further provided on the top of the slide plate, and a position pit is provided on the bottom of the slide plate; the top plate is used to drive the micro switch of the signal module to output a position status signal;

[0016] A slide rod head is provided at one end of the slide plate, and the portion of the slide rod head protruding from the housing is connected to the switch body to ensure that the two move synchronously.

[0017] In a further specific embodiment of the present invention, sliding fitting ends are extended outward from both sides of the locking fitting rod, and the sliding fitting ends are used to slide the locking fitting rod and the bracket together;

[0018] A clamping protrusion is also provided above the locking matching rod, and the clamping protrusion is clamped into the slide rod, thereby realizing synchronous sliding movement between the locking matching rod and the slide rod.

[0019] In a further specific embodiment of the present invention, one end of the locking engagement rod close to the drawer seat forms a plurality of snap-in grooves, and the snap-in grooves are used for snap-in engagement with the indicator in the drawer seat.

[0020] In yet another specific embodiment of the present invention, after the electromagnet is energized, the striking rod on the electromagnet strikes the sliding rod, thereby pushing the sliding rod to move.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] This drawer-type switch is equipped with an electric drive device on the outside of the drawer seat. The electric drive device receives the signal of the switch body position status sent by the indicator and controls the on and off of the motor through the signal so that the electric drive device matches the three-position signal of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of the drawer-type switch of the present invention;

[0024] Figure 2 This is a schematic diagram of the fixed installation of the drawer seat and the electric drive device of the utility model;

[0025] Figure 3 This is a schematic diagram of the assembly of the drawer seat and the electric drive device of the utility model;

[0026] Figure 4 This is a schematic diagram of the assembly of the components inside the housing of the electric drive device of the present invention;

[0027] Figure 5 This is an exploded schematic diagram of the interlocking module of the present invention;

[0028] Figure 6 A perspective view of one side of the interlocking module of the present invention;

[0029] Figure 7 This is a schematic diagram of the cooperation between the drive head assembly of the interlocking module and the drive shaft in the drawer seat of the utility model;

[0030] Figure 8 A three-dimensional diagram of the mating rod of the interlocking module of the present invention;

[0031] Figure 9 A perspective view of the slide of the interlocking module of the present invention;

[0032] Figure 10 This is a schematic diagram of the installation of the electromagnet of the interlocking module of the present invention;

[0033] Figure 11A three-dimensional diagram of the locking member of the interlocking module of the present invention;

[0034] Figure 12 This is a view of the interlocking module of the present invention in one direction;

[0035] Figure 13 This is a view of the interlocking module of the present invention from another direction.

[0036] Reference numerals: 1, drawer seat; 11, transmission shaft; 111, mating head; 12, indicator; 2, switch body; 3, electric drive device; 31, housing; 311, bottom plate; 312, cover plate; 32, interlocking module; 321, bracket; 322, locking mating rod; 3221, sliding mating end; 3222, snap-fit protrusion; 3223, snap-fit groove; 323, slide rod; 3231, elastic member; 3232, striking end; 324. Locking member; 3241. Elastic return member; 3242. Protruding 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. Slider head; 200. Remote control handle. DETAILED DESCRIPTION

[0037] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the applicant's description of the embodiments does not limit the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the scope of protection of the present invention.

[0038] In the following description, all concepts related to directionality or orientation such as up, down, left, right, front and back are based on the positions shown in the corresponding drawings. They are only used to facilitate the description of the technical solution provided by the present invention and to simplify the description in conjunction with the drawings. Therefore, they should not be understood as a special limitation on the technical solution provided by the present invention.

[0039] Example 1

[0040] See also Figure 1 、 Figure 6 、 Figure 12 、 Figure 13The present invention relates to a drawer-type switch, comprising a drawer base 1, a switch body 2, and an electric drive device 3. The switch body 2 is movable within the drawer base 1, thereby enabling connection or separation between the switch body 2 and the drawer base 1. An indicator 12 is provided within the drawer base 1, which rotates to indicate the position of the switch body 2. The electric drive device 3 is mounted on the outside of the drawer base 1. The "outside" described here means that the electric drive device 3 is located outside the housing of the drawer base 1, rather than being integrated into the interior of the drawer base 1. Specifically, with reference to the accompanying drawings, the electric drive device 3 is mounted on the outside of the front of the drawer base 1, i.e., facing the operator. The electric drive device 3 is used to drive the transmission system within the drawer base 1, thereby driving the switch body 2 to move relative to the drawer base 1. The electric drive device 3 is a separate device that can switch between a fixed state and a detachable state relative to the drawer base 1. Typically, the electric drive device 3 is connected to a remote control handle 200 to control the operation of the electric drive device 3. The electric drive device 3 also requires power, for example, via a plug. When the electric drive device 3 and the drawer seat 1 are in a disassembled state, the normal operation of the drawer-type switch is not affected. However, manual operation is required when driving the switch body 2 to move in the drawer seat 1 .

[0041] like Figure 2 As shown, the electric drive device 3 is installed on the outside of the drawer base 1. A slide rod head 100 protrudes from the electric drive device 3, and the slide rod head 100 cooperates with the switch body 2. That is, when the switch body 2 moves out of or into the drawer base 1, the switch body 2 and the slide rod head 100 move synchronously.

[0042] like Figure 3 As shown, the electric drive device 3 includes a housing 31 and other components installed inside the housing 31 , such as an interlocking module 32 , a motor 33 and a gear set 34 .

[0043] See you next time Figure 3 The drawer base 1 includes a transmission system for driving the switch body 2 to move within the drawer base 1. The transmission system typically includes a drive shaft 11, a carriage, a rotating shaft, etc. The drive shaft 11 is driven to rotate, thereby driving the carriage to move. The movement of the carriage drives the rotating shaft to rotate, which in turn drives the switch body 2 to move. Typically, the drive shaft 11 is driven by human power using a drive handle of the drawer base 1. Of course, the electric drive device 3 in this embodiment can also be used to drive the rotation of the drive shaft 11.

[0044] Drawer base 1 also includes an indicator 12, which displays the position of switch body 2. Specifically, it reflects the position by rotating the switch body 2 at an angle. A detailed description and function of the transmission system within drawer base 1 and indicator 12 can be found in patent CN206758931U. The indicator 12 in this patent is the transmission member described in the aforementioned patent, and the transmission shaft 11 is the screw rod described in the aforementioned patent.

[0045] like Figure 4 As shown, housing 31 houses an interlock module 32, a motor 33, a gear set 34, a drive head assembly 35, and a signal module 36. Interlock module 32 cooperates with indicator 12 within drawer housing 1 to detect the position of switch body 2 and thereby control the on / off switching of motor 33. Motor 33 is in driving connection with gear set 34, which is in driving connection with drive head assembly 35. Signal module 36 is used to transmit signals between electric drive device 3 and the outside world.

[0046] Continue to see Figure 3 and Figure 4 The housing 31 includes a bottom plate 311 and a cover plate 312. The bottom plate 311 and the cover plate 312 are combined to form the housing 31. Typically, the bottom plate 311 and the cover plate 312 are both made of metal plates, and the housing 31 is in the shape of a flat square box.

[0047] The interlock module 32, motor 33, gear set 34, drive head assembly 35, and signal module 36 are all mounted on the cover plate 312. The cover plate 312 is secured to the bottom plate 311 via screws. Preferably, the bottom plate 311 has first curved plates on either side, while the cover plate 312 has second curved plates on either side. More specifically, the first curved plates are arranged on the left and right sides, while the second curved plates are arranged on the front and back sides. The first and second curved plates form the four side walls of the housing 31.

[0048] like Figure 5 、 Figure 6As shown, the interlocking module 32 includes a bracket 321, a locking matching rod 322, a slide bar 323, a locking member 324, a slide 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 fixedly arranged at intervals by a fixed axis, and the bracket 321 is fixedly installed in the housing 31. The locking matching rod 322 is slidably arranged on the bracket 321. The locking matching rod 322 cooperates with the indicator 12 in the drawer seat 1. The slide bar 323 is slidably arranged on the cover plate 312, one end of which 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 which is connected to the slide bar 323 and the other end is fixedly arranged, thereby providing a driving force for the slide bar 323 to move to one side. The direction of the driving force is specifically toward the drawer seat 1. Since the upper part of the locking mating rod 322 is engaged with the sliding rod 323, when the elastic member 3231 applies a force to the sliding rod 323, it also applies a force to the locking mating rod 322 toward the indicator 12 in the drawer seat 1.

[0049] The locking member 324 is a lever member, which is rotatably mounted on the bracket 321 and has an elastic return member 3241 thereon. The elastic return member 3241 provides a restoring force for the locking member 324. The locking member 324 is used to lock the locking engagement rod 322.

[0050] The slide plate 325 is similarly slidably mounted on the bracket 321, specifically, slidably mounted on the outside of the bracket 321. When the electric drive device 3 is installed, the slide plate 325 moves synchronously with the switch body 2. Specifically, a slider head 100 of the slide plate 325 is connected to the switch body 2 in an abutting manner, for example. To ensure the abutting relationship between the two, the slide plate 325 is subjected to the force of an elastic member to ensure the abutting relationship between the two, that is, to ensure that the two move synchronously in the front-to-back direction.

[0051] like Figure 5 、 Figure 6 and Figure 12 As shown, the signal switch 326 is used to receive the trigger of the locking matching rod 322 to realize the on and off of the motor 33, so as to prevent the motor 33 from continuing to operate and causing burnout when the switch body 2 is in the locked state.

[0052] like Figure 4 As shown, the signal module 36 is used to connect to an external signal and simultaneously indicate the working state of the electric drive device 3 , that is, the position state of the switch body 2 , to the operator.

[0053] like Figure 3 、 Figure 7As shown, the drive head assembly 35 includes a fixed plate 351 and a drive head 352. The fixed plate 351 is installed between the bottom plate 311 and the cover plate 312, and the drive head 352 is rotatably mounted on the fixed plate 351. Correspondingly, a transmission shaft 11 is provided in the drawer base 1. A mating head 111 is provided at one end of the transmission shaft 11 near the drive head 352. The mating head 111 is pluggably engaged with the drive head 352.

[0054] like Figure 5 、 Figure 6 、 Figure 8 As shown, the locking rod 322 is typically made of an insulating material, and its main body is round. Sliding engagement ends 3221 extend outward from both sides of the locking rod 322, which are used to slide the locking rod 322 into the bracket 321. A snap-in protrusion 3222 is also provided above the locking rod 322, which snaps into the slide bar 323, thereby achieving synchronized sliding movement between the locking rod 322 and the slide bar 323. The end of the locking rod 322, which is adjacent to the drawer base 1, is formed with a plurality of snap-in slots 3223. The snap-in slots 3223 are configured to snap into engagement with the indicator 12 within the drawer base 1. Specifically, when the switch body 2 is moved to the disconnected, test, or connected positions, the snap-in slots 3223 snap into engagement with the head of the indicator 12. During this process, the locking rod 322 moves a snap-in distance toward the indicator 12.

[0055] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 9 As shown, the slide plate 325 is slidably arranged on the outside of the bracket 321. The slide plate 325 is usually made of a metal plate. A sliding groove 3251 is provided on the slide plate 325, and the sliding groove 3251 is used for the sliding setting of the slide plate 325 to ensure the reliability of the movement. A bent top plate 3252 is also provided on the top of the slide plate 325, and a position pit 3253 is provided on the bottom of the slide plate 325. The top plate 3252 is used to drive the micro switch of the signal module 36 to output a position status signal. A slide rod head 100 is provided at one end of the slide plate 325, and the part of the slide rod head 100 protruding from the cover plate 312 cooperates with the switch body 2 to ensure that the two move synchronously.

[0056] like Figure 6 、 Figure 10 As shown, the electromagnet 327 is also installed on the cover plate 312 and corresponds to the slide bar 323. When the electromagnet 327 is energized, the striking rod 3271 on the electromagnet 327 can strike the striking end 3232 of the slide bar 323, thereby pushing the slide bar 323 to move.

[0057] like Figure 5 、 Figure 6 、 Figure 11 As shown, the locking member 324 is made of sheet metal, and an elastic return member 3241 is sleeved on the transmission shaft of the locking member 324. Preferably, the elastic return member 3241 is a torsion spring. A protruding shaft 3242 is provided on one side of the locking member 324. The protruding shaft 3242 protrudes from the bracket 321 and abuts against the position recess 3253 of the slide plate 325.

[0058] Please continue reading Figures 1 to 11 and combined Figure 12 、 Figure 13 The working process of the interlock module 32 of the drawer-type switch of the present invention is:

[0059] When the switch body 2 is in the separated position within the drawer base 1, the engagement slot 3223 of the locking lever 322 is at an angle that allows engagement with the indicator 12 within the drawer base 1. The elastic member 3231 pulls the sliding rod 323 to engage the locking lever 322 with the indicator 12. The forward movement of the locking lever 322 releases the pressure on the signal switch 326, which switches on and off, shutting off power to the motor 33 and causing it to stop. The switch is now in a locked state.

[0060] In the above-mentioned locked state, the electromagnet 327 receives a signal and actuates, and the electromagnet 327 pushes the slide bar 323 backward. Of course, the slide bar 323 can also be pulled by manpower. In the process of the slide bar 323 moving backward, the force of the elastic member 3231 must be overcome.

[0061] Since the locking protrusion 3222 of the locking mating rod 322 is engaged with the sliding rod 323, the sliding rod 323 and the locking mating rod 322 are in a synchronous movement relationship. When the sliding rod 323 moves backward, the locking mating rod 322 also moves backward. At this time, the locking mating rod 322 is disengaged from the indicator 12, and the backward movement of the locking mating rod 322 also presses the signal switch 326, causing its state to switch, thereby powering the motor 33.

[0062] At this point, since the switch body 2 is in the separated position, the slide plate 325, which moves synchronously with the switch body 2, is in a corresponding position. The recess 3253 below the slide plate 325 now corresponds to the protrusion 3242 on the locking member 324. The locking member 324 can then swing upward and engage with the locking engagement rod 322, preventing the locking engagement rod 322 from moving forward.

[0063] As the motor 33 works, the switch body 2 continues to move relative to the drawer seat 1, and the slide 325 also shifts. The position pit 3253 no longer corresponds to the convex shaft 3242. The convex shaft 3242 is pressed down, thereby releasing the snap fit on the locking mating rod 322. Driven by the slide rod 323, the locking mating rod 322 is tightly attached to the indicator 12 in the drawer seat 1.

[0064] The above process only describes a cycle of locking and unlocking of the interlocking module 32 in the separation position. For the three positions of separation, test, and connection, each position has a cycle of locking and unlocking. Since the working method is consistent, it will not be repeated.

[0065] For the switch body 2, one is the entry process through separation, testing, and connection positions; the other is the exit process through connection, testing, and separation. The locking and unlocking cycles are consistent, and the difference lies in the rotation direction of the motor 33, which is controlled by the circuit.

[0066] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A drawer-type switch, comprising a drawer seat (1), a switch body (2), and an electric drive device (3), wherein the electric drive device (3) is mounted on the outside of the drawer seat (1) and drives the switch body (2) to move relative to the drawer seat (1), and an indicator (12) is provided in the drawer seat (1) for indicating the position state of the switch body (2) by rotating. The invention is characterized in that: The electric drive device (3) receives the position signal of the indicator (12) to control the on and off of the motor (33) inside the electric drive device (3), so that the electric drive device (3) matches the three-position signal of the circuit breaker; The electric drive device (3) further includes a housing (31), an interlocking module (32), a gear set (34), a drive head assembly (35), and a signal module (36) installed in 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).

2. The drawer-type switch according to claim 1, characterized in that: The motor (33) is in transmission connection with the gear set (34), the gear set (34) is in transmission connection with the drive head assembly (35), and the drive head assembly (35) is connected to the transmission system in the drawer seat (1); the signal module (36) is used for signal transmission between the electric drive device (3) and the outside.

3. The drawer-type switch according to claim 2, characterized in that: The interlocking module (32) includes a bracket (321), a locking matching 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) is fixedly installed in the housing (31), the locking matching rod (322) and the slide (325) are slidably arranged on the bracket (321), and the slide rod (323) is slidably arranged on the housing (31); the locking member (324) is rotatably arranged on the bracket (321), and the locking matching rod (322) and the slide (325) are fixedly arranged; The locking coupling rod (322) triggers the signal switch (326) to switch the power supply circuit of the motor (33) on and off, and the electromagnet (327) is used to drive the reset action of the slide plate (325).

4. The drawer-type switch according to claim 3, characterized in that: The housing (31) comprises a bottom plate (311) and a cover plate (312), and the bottom plate (311) and the cover plate (312) are coupled to form the housing (31).

5. The drawer-type switch according to claim 3, characterized in that: The bracket (321) includes a pair of bracket plates, which are spaced apart from each other. One end of the slide 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). One end of the elastic member (3231) is connected to the slide rod (323), and the other end is fixed. The elastic member (3231) applies a driving force to the slide bar (323) to move to one side, and the direction of the driving force is toward the drawer seat (1). Since the upper portion of the locking mating rod (322) is engaged with the slide bar (323), when the elastic member (3231) applies a force to the slide bar (323), the locking mating rod (322) applies a force to move toward the indicator member (12) in the drawer seat (1).

6. The drawer-type switch according to claim 3, characterized in that: The locking member (324) is provided with an elastic reset member (3241), which provides a restoring rotational force for the locking member (324). The locking member (324) is used to lock the locking matching rod (322).

7. The drawer-type switch according to claim 3, characterized in that: The slide plate (325) is provided with a sliding groove (3251), and the sliding groove (3251) is used for sliding setting of the slide plate (325); the top of the slide plate (325) is also provided with a bent top plate (3252), and the bottom of the slide plate (325) is provided with a position pit (3253); the top plate (3252) is used to drive the micro switch of the signal module (36) to output a position status signal; One end of the slide plate (325) is provided with a slide rod head (100), and the portion of the slide rod head (100) protruding from the housing (31) is connected to the switch body (2) to ensure that the two move synchronously.

8. The drawer-type switch according to claim 3, characterized in that: Sliding fitting ends (3221) extend outward from both sides of the locking fitting rod (322), and the sliding fitting ends (3221) are used to slide the locking fitting rod (322) and the bracket (321). A clamping protrusion (3222) is further provided above the locking coupling rod (322), and the clamping protrusion (3222) is clamped into the slide rod (323), thereby achieving synchronous sliding movement between the locking coupling rod (322) and the slide rod (323).

9. The drawer-type switch according to claim 3, characterized in that: One end of the locking and matching rod (322) close to the drawer seat (1) forms a plurality of snap-in slots (3223), and the snap-in slots (3223) are used for snap-in matching with the indicator (12) in the drawer seat (1).

10. The drawer-type switch according to claim 3, characterized in that: After the electromagnet (327) is energized, the striking rod (3271) on the electromagnet (327) strikes the slide bar (323), thereby pushing the slide bar (323) to move.

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