Anti-drop magnetically controlled switch

Abstract

The invention discloses an anti-drop magnetically controlled switch, which comprises a glue box and a positioning mechanism, the positioning mechanism comprises two clamping plates, the outer surfaces of the two clamping plates are movably connected with the interior of the glue box, and the clamping plates fix a reed switch at the center or side of the interior of the glue box through movement. Clamping grooves are formed in the outer surface of the clamping plate and the interior of the glue box, a sliding plate is fixedly connected to the outer surface of the clamping plate, a ball screw is fixedly connected to a body of the sliding plate in a penetrating mode, and one end of the ball screw is rotationally connected with the interior of the glue box in an embedded mode. The invention relates to a magnetic control switch, in particular to a magnetic control switch, which solves the problem that a reed switch falls off due to the facts that the reed switch and a PCB (printed circuit board) are connected by soldering and the reed switch does not have an additional fixing and supporting effect and external force is easy to generate to cause welding spot breakage in a glue sealing and transferring process and a glue injection process.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetically controlled switches, in particular to an anti-dropout magnetically controlled switch. Background Art

[0002] The existing magnetically controlled switches basically use hot-melt encapsulating glue to encapsulate the reed switch and the wire tube. The reed switch is easily broken and damaged due to external pulling and thermal expansion and contraction, thereby affecting the use of the magnetic controlled switch. In the application number CN202020561270.0, a glue-injected encapsulated magnetic controlled switch is provided, which includes a circuit board and a packaging box. The circuit board is electrically connected to a magnetic sensitive element and a wire. The box cavity is filled and sealed with glue to avoid damage caused by changes in ambient temperature due to thermal expansion and contraction, and to avoid damage to the magnetic sensitive element due to pulling of the wire. In the hot-melt encapsulated magnetic controlled switch with the application number CN201921016294.1, a PUB board is embedded in the cavity of the glue box, which has a further protection effect, and also has the effect of reducing labor costs and saving resources.

[0003] Although the two sets of devices have the above advantages, they still have common defects in actual use. Since both sets of devices fix the reed switch on the PCB board by soldering, and the PCB board is placed in a plastic box for glue injection and packaging, when the PCB board is placed in the plastic box, the reed switch and the plastic box are relatively independent, and there are no additional fixing measures. During packaging and transportation and during glue injection, the flow of the colloid will generate external force acting on the reed switch. Since the firmness of soldering is relatively low and it is easily affected by the welding quality, the firmness of the solder joint is further reduced, which can easily cause the reed switch to fall off, thereby affecting the use of the PCB board. Therefore, it is necessary to solve the shortcomings of the existing technology. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an anti-dropout magnetic control switch, which solves the problem that the existing magnetic control switch is easily broken by external force during the glue sealing and transportation process and the glue injection process, because the reed switch and the PCB board are connected by soldering and the reed switch has no additional fixed support. As a result, the solder joints are easily broken, thereby causing the reed switch to fall off.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an anti-drop-type magnetic control switch, including a plastic box, a positioning mechanism, the positioning mechanism including two clamping plates, the outer surfaces of the two clamping plates are movably connected to the interior of the plastic box, the clamping plates fix the reed switch in the center or side of the interior of the plastic box by movement, the outer surfaces of the clamping plates and the interior of the plastic box are both provided with clamping grooves, the outer surfaces of the clamping plates are fixedly connected to a slide plate, the body of the slide plate is fixedly connected to a ball screw, one end of the ball screw is embedded and rotatably connected to the interior of the plastic box; A drive assembly is provided outside the ball screw and drives the ball screw to rotate by providing power, so as to adjust the position of the splint; An auxiliary component is arranged on the outside of the clamping plate and is used to assist in positioning the reed switch wire.

[0006] Preferably, a pad is provided on the outside of the splint, one side surface of the pad is arc-shaped, the outer surface of the pad is fixedly connected to a partition, the outer surface of the partition is fixedly connected to the inside of the plastic box, the outer surface of the partition is slidably connected to the outer surface of the splint, the body of the partition is fixedly connected to a groove frame, and the outer surface of the slide is slidably connected to the inside of the groove frame.

[0007] Preferably, the driving assembly includes a worm, one end of the worm is rotatably connected to the body of the plastic box, one end of the worm is fixedly connected to a rotating plate, the outer surface of the rotating plate is embedded and rotatably connected to the outer surface of the plastic box, the outer surface of the rotating plate is provided with a rotating groove, the outer surface of the worm is engaged with a worm wheel, and the outer surface of the worm wheel is rotatably connected to the interior of the plastic box.

[0008] Preferably, the body of the worm wheel is fixedly connected with a rotating rod, both ends of the rotating rod are embedded in the interior of the plastic box and are rotatably connected, the outer surface of the worm wheel is provided with a ring groove, the interior of the ring groove is fixedly connected with a gear ring, the outer surface of the gear ring is meshed with a gear, the outer surface of the gear is rotatably connected with the body of the groove frame, and the two sides of the outer surface of the gear are respectively fixedly connected to the other end of the two ball screws.

[0009] Preferably, a limiting unit is provided on the outside of the worm, and the limiting unit includes a card plate, the body of the card plate is fixedly connected to the outer surface of the worm, the outer surface of the card plate is movably connected to the inside of the plastic box, and a circular ring is provided on the outside of the card plate, and the circular ring radially limits the card plate through friction abutment, and the card plate pushes the circular ring to move longitudinally through friction abutment, and the outer surface of the circular ring is fixedly connected to a spring rod, and one end of the spring rod is fixedly connected to the inside of the plastic box.

[0010] Preferably, a fixed wedge is fixedly connected to the outer surface of the circular ring, a movable wedge is movably connected to the outer surface of the fixed wedge, and the outer surface of the movable wedge is fixedly connected to the outer surface of the clamping plate.

[0011] Preferably, the auxiliary component includes a solid tube, the outer surface of the solid tube is fixedly connected to the interior of the plastic box, and piston rods are slidably connected on both sides of the interior of the solid tube. One end of the piston rod on one side is fixedly connected to a solid block, and the outer surface of the solid block is movably connected to a resist block, and the outer surface of the resist block is fixedly connected to the outer surface of the splint, and one end of the piston rod on the other side assists in positioning the reed switch wire through axial sliding.

[0012] Preferably, a one-way valve is provided inside the solid pipe, a return pipe is passed through the interior of the solid pipe, the one-way valve is located between the two ends of the return pipe, and a pressure relief valve is provided on the return pipe.

[0013] Preferably, a pressure-maintaining unit is provided at one end of the piston rod on the other side, and the pressure-maintaining unit includes a pressure plate, an auxiliary groove is provided on the outer surface of the pressure plate, an inner cavity is provided on the body of the pressure plate, a pin rod is slidably connected through the interior of the inner cavity, a tension spring is sleeved on the outer surface of the pin rod, and both ends of the tension spring are fixedly connected to the interior of the inner cavity and the end of the pin rod respectively.

[0014] Preferably, one end of the pin rod is fixedly connected to a push plate, the outer surface of the push plate is fixedly connected to one end of the piston rod on the other side, the outer surface of the push plate is provided with a slot, the inside of the slot is slidably connected to a card strip, and the outer surface of the card strip is fixedly connected to the inside of the plastic box. Beneficial effects

[0015] The present invention provides an anti-dropout magnetically controlled switch. Compared with the prior art, it has the following advantages: (1) By setting up a positioning mechanism, the contact between the arc surface of the pad and the reed switch is used to install, position and support the reed switch, and the movement of the clamping plate is used to clamp the reed switch, thereby improving the stability and stress resistance of the reed switch, thereby avoiding the problem of stress fracture of the welding point, and by clamping the clamping plates on both sides and the clamping plate on one side and the inner wall of the plastic box, it is easy to adjust the installation position of the reed switch.

[0016] (2) By setting up a driving component and utilizing the meshing of the worm gear and the worm, not only can the position of the splint be adjusted by transmission, but the self-locking function of the two can also improve the stability of the splint and the reed switch. At the same time, the splint can be adjusted from the outside of the plastic box by utilizing the function of the worm gear and the rotating plate, which improves the convenience of adjustment.

[0017] (3) By setting a limit unit, the clamping plate can be used to limit the worm axially. At the same time, the elastic force of the spring rod and the abutment of the fixed wedge and the moving wedge are used to avoid the problem of worm reversal and limit the rotation of the worm, thereby ensuring the stability of the splint.

[0018] (4) By setting up auxiliary components, the abutment between the abutment block and the solid block is facilitated, and the piston rod is moved by air pressure, so that when the splint moves, the piston rod on one side outputs the wire close to the end of the reed switch, thereby providing protection and support for the wire, avoiding the risk of the wire falling off due to the movement of the colloid during the injection and packaging.

[0019] (5) By setting up a pressure-maintaining unit, the pressure plate can better wrap the reed switch wire through the auxiliary groove, avoiding the problem of the wire being moved by force and causing the solder joint to break and fall off. At the same time, through the sliding of the pin rod inside the inner cavity and the expansion and contraction of the tension spring, the push plate drives the pressure plate to protect the wire, playing a role in maintaining pressure, avoiding the problem of the wire being pushed and causing the solder joint to break and fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the internal structure of the present invention; Figure 2 A three-dimensional diagram of the internal structure of the trough frame of the present invention; Figure 3 A perspective view of the external structure of the worm gear of the present invention; Figure 4 This is a three-dimensional diagram of the external structure of the card board of the present invention; Figure 5 A three-dimensional diagram of the internal structure of the solid pipe of the present invention; Figure 6 It is a three-dimensional diagram of the internal structure of the pressing plate of the present invention.

[0021] Figure: 1. Plastic box; 2. Clamp; 3. Drive assembly; 31. Worm; 32. Limiting unit; 321. Clamp; 322. Ring; 323. Spring rod; 324. Fixed wedge; 325. Moving wedge; 33. Rotating plate; 34. Rotary groove; 35. Worm gear; 36. Rotating rod; 37. Ring groove; 38. Gear ring; 39. Gear; 4. Auxiliary assembly; 41. Fixed pipe; 42. Piston rod ; 43. Solid block; 44. Abutment block; 45. Pressure holding unit; 451. Pressure plate; 452. Auxiliary groove; 453. Inner cavity; 454. Pin rod; 455. Tension spring; 456. Push plate; 457. Card groove; 458. Card strip; 46. One-way valve; 47. Return pipe; 48. Pressure relief valve; 5. Clamping groove; 6. Slide plate; 7. Ball screw; 8. Pad; 9. Partition; 10. Slot frame. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6 The present invention provides a technical solution: an anti-dropout magnetic control switch: Example 1: Refer to the attached manual Figure 1 , Attachment Figure 2 ; The present invention comprises a plastic box 1, wherein a positioning mechanism is provided inside the plastic box 1, and the positioning mechanism comprises two clamping plates 2, which can clamp the reed switch by movement, thereby avoiding the problem that the reed switch is disconnected from the PCB board due to force. When the clamping plates 2 and the inner wall of the plastic box 1 clamp the reed switch, the distance between the two clamping plates 2 is smaller than the outer diameter of the reed switch. The outer surfaces of the two clamping plates 2 are movably connected to the inside of the plastic box 1. The clamping plates 2 fix the reed switch in the center or side of the inside of the plastic box 1 by movement. The outer surface of the clamping plates 2 and the inside of the plastic box 1 are provided with clamping grooves 5, which are arc-shaped and adapted to the curvature of the surface of the reed switch. The outer surface of the clamping plates 2 is fixedly connected to a slide plate 6, and the body of the slide plate 6 is fixedly connected to a ball screw 7. The ball screw 7 Through unidirectional rotation, the sliding end thereof reciprocates along the axial direction of its screw rod. One end of the ball screw 7 is embedded and rotatably connected with the interior of the plastic box 1. A pad 8 is provided on the outside of the splint 2. One side surface of the pad 8 is arc-shaped, and the curvature is adapted to the curvature of the surface of the reed switch, which plays a role in positioning and supporting the installation of the reed switch. A partition 9 is fixedly connected to the outer surface of the pad 8. The outer surface of the partition 9 is fixedly connected to the interior of the plastic box 1. The outer surface of the partition 9 is slidingly connected to the outer surface of the splint 2. The body of the partition 9 is fixedly connected with a slot frame 10. The slot frame 10 can close the movement path of the splint 2, thereby avoiding leakage and waste of the packaging glue. The outer surface of the slide plate 6 is slidingly connected to the interior of the slot frame 10.

[0024] In this embodiment, the wires at both ends of the reed switch can be bent and made perpendicular to the reed switch, and the wires on both sides can be fixed to the PCB board by soldering, or the reed switch can be installed first and then the wires and the solder joints of the PCB board can be soldered. When installing the reed switch, it can be placed at the center of the plastic box 1 or close to the inner wall of the plastic box 1 according to needs; first, the ball screw 7 is rotated to make its sliding end drive the clamping plate 2 to move through the slide plate 6, so that the clamping plate 2 is away from the clamping station, and then the reed switch is placed in the plastic box 1, and it is contacted with the arc surface of the pad 8 corresponding to the clamping station for positioning and installation, and the reed switch is supported by the pad 8, and then the ball screw 7 is rotated to reset the clamping plate 2, and the clamping plate 2 clamps the glass tube of the reed switch through the clamping groove 5, thereby avoiding the problem that the reed switch as a whole is shaken by force, resulting in the breakage of the solder joints of the wire and the fall of the reed switch.

[0025] Example 2: Based on Example 1, refer to the attached Figure 2 , Attachment Figure 3 ; The outer surface of the rotating plate 33 is provided with a rotation groove 34, and the rotation groove 34 is semi-arc-shaped, and its concave part is convenient for the clamping effect of the finger or the clamping end of the clamp, so as to facilitate the twisting of the rotating plate 33. The outer surface of the worm 31 is meshed with a worm gear 35. The worm gear 35 and the worm 31 can not only transmit the torque of the rotating plate 33, but also play a self-locking role, thereby improving the stability of the splint 2. The outer surface of the worm gear 35 is rotatably connected to the inner surface of the plastic box 1. The main body is fixedly connected with a rotating rod 36, which provides rotational support for the worm gear 35. Both ends of the rotating rod 36 are embedded in the interior of the plastic box 1 and are rotatably connected. An annular groove 37 is provided on the outer surface of the worm gear 35. The annular groove 37 can provide contact space without affecting the meshing transmission of the worm gear 35 and the worm 31. A gear ring 38 is fixedly connected to the inside of the annular groove 37. A gear 39 is meshed with the outer surface of the gear ring 38. A part of the gear 39 is meshed with the gear ring 38 inside the annular groove 37. As a preferred embodiment, the worm gear 35 can also directly replace the gear 39. The outer surface of the gear 39 is rotatably connected to the main body of the channel frame 10, and the two sides of the outer surface of the gear 39 are respectively fixedly connected to the other ends of the two ball screws 7.

[0026] In this embodiment, the rotating plate 33 is clamped by the rotating groove 34, so that the rotating rotating plate 33 drives the worm 31 to rotate, and the worm wheel 35 and the worm 31 are engaged, so that the worm wheel 35 drives the gear ring 38 to rotate, and then the gear 39 and the gear ring 38 are engaged, so that the gear 39 drives the ball screw 7 to rotate, thereby adjusting the position of the clamping plate 2.

[0027] Example 3: Based on Example 2, refer to the attached Figure 1 , Attachment Figure 4 ; The worm 31 is provided with a limiting unit 32 on the outside of the limiting unit 32, which includes a clamping plate 321. The clamping plate 321 has an axial limiting effect on the worm 31 and can seal the connection of the worm 31. The body of the clamping plate 321 is fixedly connected to the outer surface of the worm 31, and the outer surface of the clamping plate 321 is movably connected to the inside of the plastic box 1. A circular ring 322 is provided on the outside of the clamping plate 321. The inner diameter of the ring hole of the circular ring 322 is larger than the outer diameter of the worm 31 to avoid contact wear and affecting the normal rotation of the worm 31. As a preferred method, the side where the circular ring 322 and the clamping plate 321 are close to each other can radially limit the rotating plate 33 through contact friction. The circular ring 322 radially limits the clamping plate 321 through friction. The clamping plate 321 is When the cam 321 is in the unlocked position, the locking plate 321 is unlocked and the locking plate 322 is unlocked, so that the cam 321 can be unlocked and the locking plate 322 can be unlocked.

[0028] When the worm 31 is at rest, the fixed wedge 324 abuts against the vertical plane of the movable wedge 325, thereby preventing the reverse rotation of the worm 31. When the rotating plate 33 drives the worm 31 to rotate, the clamping plate 321 drives the movable wedge 325 to rotate with it. The movable wedge 325 abuts against the inclined surface of the fixed wedge 324, pushing the fixed wedge 324 to drive the ring 322 to rise, and at the same time stretching the output end of the spring rod 323. After the rotation stops, the output end of the spring rod 323 retracts, causing the ring 322 to drive the fixed wedge 324 to descend and reset, thereby limiting the clamping plate 321 and the worm 31.

[0029] Example 4: Based on Example 3, refer to the attached Figure 1 , Attachment Figure 5 ; An auxiliary component 4 is provided on the outside of the splint 2. The auxiliary component 4 includes a fixed tube 41. The inside of the solid tube 41 is filled with high-pressure air. The outer surface of the solid tube 41 is fixedly connected to the inside of the plastic box 1. Both sides of the inside of the solid tube 41 are slidably connected with a piston rod 42. The piston rod 42 moves with the adjustment of the air pressure inside the solid tube 41. One end of the piston rod 42 on one side is fixedly connected to a solid block 43. The outer surface of the solid block 43 is movably connected to a stop block 44. The cross section of the stop block 44 is an isosceles triangle, which is in oblique contact with the solid block 43, pushing the piston rod 42 on one side to move. The air inside the solid tube 41 is compressed, so that the piston rod 42 on the other side follows the synchronous movement. The outer surface of the block 44 is fixedly connected to the outer surface of the splint 2. One end of the piston rod 42 on the other side is positioned by axial sliding to assist the reed switch wire. A one-way valve 46 is provided inside the solid tube 41. The one-way valve 46 allows the air inside the solid tube 41 to flow in one direction. A return pipe 47 is connected to the interior of the solid tube 41. The one-way valve 46 is located between the two ends of the return pipe 47. A pressure relief valve 48 is provided on the return pipe 47. The pressure relief valve 48 can balance the air pressure values ​​on both sides of the solid tube 41.

[0030] In this embodiment, when the splint 2 moves close to the corresponding clamping station to clamp the reed switch, it drives the block 44 to move synchronously, and through the abutment between the block 44 and the solid block 43, pushes the piston rod 42 on one side to slide toward the inside of the solid tube 41, and compresses the air on one side of the solid tube 41, so that the compressed air flows into the other side of the solid tube 41 through the one-way valve 46. The air pressure on the other side of the solid tube 41 increases, pushing the piston rod 42 on the other side to slide outward, and making one end of the piston rod 42 on the other side close to the wire of the reed switch, thereby achieving protection for the wire. When the splint 2 is away from the clamping station, the solid block 43 is disengaged, and the high pressure on the other side of the solid tube 41 causes the pressure relief valve 48 to open, so that the high-pressure gas on the other side flows back through the return pipe 47 to balance the air pressure inside the solid tube 41.

[0031] Example 5: Based on Example 4, refer to the attached Figure 1 , Attachment Figure 6 ; A pressure-maintaining unit 45 is provided at one end of the piston rod 42 on the other side. The pressure-maintaining unit 45 includes a pressure plate 451. An auxiliary groove 452 is provided on the outer surface of the pressure plate 451. The auxiliary groove 452 is adapted to the bending part of the wire and wraps the wire to avoid the problem of the wire being subjected to stress and causing the solder joint to break. The body of the pressure plate 451 is provided with an inner cavity 453. The interior of the inner cavity 453 is penetrated by a pin rod 454 for sliding connection. The outer surface of the pin rod 454 is sleeved with a tension spring 455. The movement of the tension spring 455 and the pin rod 454 facilitates the adjustment of the distance between the pressure plate 451 and the push plate 456, so as to maintain the pressure on the wire and avoid the wire being subjected to stress and causing the solder joint to break and the position to shift. The problem is that the two ends of the tension spring 455 are fixedly connected to the interior of the inner cavity 453 and the end of the pin rod 454 respectively. One end of the pin rod 454 is fixedly connected to a push plate 456. The push plate 456 is fixedly connected to the piston rod 42 on the other side to obtain driving force. The outer surface of the push plate 456 is fixedly connected to one end of the piston rod 42 on the other side. A card groove 457 is provided on the outer surface of the push plate 456. The interior of the card groove 457 is slidably connected to a card strip 458. The cross section of the card strip 458 is T-shaped, which improves the longitudinal stability of the push plate 456 and can provide a mounting area for the solidified colloid to improve the stability of the solidified colloid. The outer surface of the card strip 458 is fixedly connected to the interior of the plastic box 1.

[0032] In this embodiment, the push plate 456 moves synchronously with the piston rod 42 on the other side, and drives the pressure plate 451 to move synchronously through the action of the pin rod 454 and the tension spring 455, and enables the pressure plate 451 to wrap the wire of the reed switch through the auxiliary groove 452. After the wire contacts the pressure plate 451, the push plate 456 continues to move to push the pin rod 454 to move inside the inner cavity 453, and stretches the tension spring 455 to maintain pressure on the wire. During the glue injection process, when the glue enters the auxiliary groove 452, the inner walls on three sides thereof act as side protection for the wire, so as to improve the stability of the wire, thereby avoiding the problem of solder joint breakage caused by the force movement of the wire.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An anti-drop magnetic switch, comprising a plastic box (1), characterized in that: A positioning mechanism, the positioning mechanism comprising two clamping plates (2), the outer surfaces of the two clamping plates (2) are movably connected to the interior of the plastic box (1), the clamping plates (2) fix the reed switch at the center or side of the interior of the plastic box (1) by movement, the outer surfaces of the clamping plates (2) and the interior of the plastic box (1) are provided with clamping grooves (5), the outer surfaces of the clamping plates (2) are fixedly connected to a slide plate (6), the body of the slide plate (6) is fixedly connected to a ball screw (7), one end of the ball screw (7) is embedded in the interior of the plastic box (1) and is rotatably connected; A drive assembly (3), the drive assembly (3) being arranged outside the ball screw (7) and driving the ball screw (7) to rotate by providing power, thereby adjusting the position of the splint (2); An auxiliary component (4) is arranged outside the clamping plate (2) and is used to assist in positioning the reed switch wire.

2. The anti-dropout magnetic switch according to claim 1, characterized in that: A pad (8) is provided on the outside of the splint (2), and one side surface of the pad (8) is arc-shaped. The outer surface of the pad (8) is fixedly connected to a partition (9), and the outer surface of the partition (9) is fixedly connected to the inside of the plastic box (1). The outer surface of the partition (9) is slidably connected to the outer surface of the splint (2). The body of the partition (9) is fixedly connected to a slot frame (10), and the outer surface of the slide plate (6) is slidably connected to the inside of the slot frame (10).

3. The anti-dropout magnetic switch according to claim 2, characterized in that: The driving assembly (3) includes a worm (31), one end of the worm (31) is connected to the body of the plastic box (1) through rotation, one end of the worm (31) is fixedly connected to a rotating plate (33), the outer surface of the rotating plate (33) is embedded in the outer surface of the plastic box (1) and is connected to rotation, the outer surface of the rotating plate (33) is provided with a rotating groove (34), the outer surface of the worm (31) is meshed with a worm wheel (35), and the outer surface of the worm wheel (35) is connected to the interior of the plastic box (1) for rotation.

4. The anti-dropout magnetic switch according to claim 3, characterized in that: The body of the worm wheel (35) is fixedly connected to a rotating rod (36), both ends of which are embedded in the interior of the plastic box (1) and are rotatably connected. The outer surface of the worm wheel (35) is provided with an annular groove (37), the interior of the annular groove (37) is fixedly connected to a gear ring (38), the outer surface of the gear ring (38) is meshed with a gear (39), the outer surface of the gear (39) is rotatably connected to the body of the channel frame (10), and both sides of the outer surface of the gear (39) are fixedly connected to the other ends of the two ball screws (7).

5. The anti-dropout magnetic switch according to claim 3, characterized in that: A limiting unit (32) is provided on the outside of the worm (31), and the limiting unit (32) includes a card plate (321). The body of the card plate (321) is fixedly connected to the outer surface of the worm (31). The outer surface of the card plate (321) is movably connected to the inside of the plastic box (1). A circular ring (322) is provided on the outside of the card plate (321). The circular ring (322) radially limits the card plate (321) through friction abutment. The card plate (321) pushes the circular ring (322) to move longitudinally through friction abutment. A spring rod (323) is fixedly connected to the outer surface of the circular ring (322), and one end of the spring rod (323) is fixedly connected to the inside of the plastic box (1).

6. The anti-dropout magnetic switch according to claim 5, characterized in that: The outer surface of the circular ring (322) is fixedly connected to a fixed wedge (324), the outer surface of the fixed wedge (324) is movably connected to a movable wedge (325), and the outer surface of the movable wedge (325) is fixedly connected to the outer surface of the clamping plate (321).

7. The anti-dropout magnetic switch according to claim 1, characterized in that: The auxiliary component (4) includes a fixed tube (41), the outer surface of the fixed tube (41) is fixedly connected to the interior of the plastic box (1), and piston rods (42) are slidably connected to both sides of the interior of the fixed tube (41). One end of the piston rod (42) on one side is fixedly connected to a fixed block (43), and the outer surface of the solid block (43) is movably connected to a stop block (44), and the outer surface of the stop block (44) is fixedly connected to the outer surface of the splint (2). One end of the piston rod (42) on the other side is axially slidably assisted in positioning the reed switch wire.

8. The anti-dropout magnetic switch according to claim 7, characterized in that: A one-way valve (46) is provided inside the solid pipe (41), and a return pipe (47) is connected to the inside of the solid pipe (41). The one-way valve (46) is located between the two ends of the return pipe (47), and a pressure relief valve (48) is provided on the return pipe (47).

9. The anti-dropout magnetic switch according to claim 7, characterized in that: A pressure-maintaining unit (45) is provided at one end of the piston rod (42) on the other side. The pressure-maintaining unit (45) includes a pressure plate (451). An auxiliary groove (452) is provided on the outer surface of the pressure plate (451). An inner cavity (453) is provided on the body of the pressure plate (451). A pin rod (454) is slidably connected to the interior of the inner cavity (453). A tension spring (455) is sleeved on the outer surface of the pin rod (454). The two ends of the tension spring (455) are fixedly connected to the interior of the inner cavity (453) and the end of the pin rod (454), respectively.

10. The anti-dropout magnetic switch according to claim 9, characterized in that: One end of the pin rod (454) is fixedly connected to a push plate (456), the outer surface of the push plate (456) is fixedly connected to one end of the piston rod (42) on the other side, the outer surface of the push plate (456) is provided with a slot (457), the interior of the slot (457) is slidably connected to a clip (458), and the outer surface of the clip (458) is fixedly connected to the interior of the plastic box (1).

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