Magnetic coupling non-contact pull cord switch

Abstract

This utility model relates to the field of pull-cord switch technology and discloses a magnetically coupled non-contact pull-cord switch, including a pull-cord switch body and a mounting bracket. Two L-shaped mounting plates are fixedly connected to the arc surface of the pull-cord switch body. Two mounting grooves are formed on the upper surface of the mounting bracket. The L-shaped mounting plates are slidably connected to the inner walls of the mounting grooves. A connection port is fixedly connected to the arc surface of the pull-cord switch body, and a connector is movably connected within the connection port. This magnetically coupled non-contact pull-cord switch solves the problems of: multiple bolts are needed to fix the switch body and mounting bracket during installation and disassembly, which is cumbersome, time-consuming, and labor-intensive; bolts are prone to corrosion and stripping, increasing disassembly difficulty and extending maintenance time; cable connectors are mostly welded, requiring specialized tools and skills for disassembly and assembly, which is cumbersome and easily leads to connector damage or poor contact; and the connection port is prone to loosening under vibration and pulling, causing unstable or even interrupted signal transmission.

Description

Technical Field

[0001] This utility model relates to the field of pull rope switch technology, and in particular to a magnetically coupled non-contact pull rope switch. Background Technology

[0002] Pull-cord switches are widely used as an important safety protection device in many fields such as industrial production. Magnetic coupling non-contact pull-cord switches transmit signals using the principle of magnetic coupling, eliminating the need for direct contact of mechanical parts. Their core function is to trigger the switch action by utilizing changes in the magnetic field. When external forces such as pulling are applied, the position of the internal magnet changes, causing a change in the magnetic field distribution, which is then sensed by the corresponding magnetic sensitive element, thereby controlling the circuit's on / off state.

[0003] Regarding the aforementioned and existing related technologies, the inventors believe that the following defects often exist: When installing and disassembling pull-cord switches, multiple bolts are required to fix the switch body to the mounting bracket. Precise alignment of the bolt holes and the use of tools are necessary, which is time-consuming and labor-intensive. Furthermore, the bolts are prone to rust and stripping due to long-term exposure, significantly increasing the difficulty of disassembly and extending downtime for maintenance. Cable connectors and switch bodies are mostly welded connections, requiring professional tools and skills for disassembly and maintenance. The operation is cumbersome and prone to damage to connectors or poor cable contact due to improper operation. Connectors at the connection points are subject to long-term equipment vibration and external pulling forces, making them prone to loosening and causing unstable or even interrupted signal transmission. Summary of the Invention

[0004] The technical problem this utility model aims to solve is that existing technologies require multiple bolts to fix the switch body and mounting bracket during installation and disassembly of pull-cord switches. This is cumbersome, time-consuming, and labor-intensive, and the bolts are prone to corrosion and stripping, increasing the difficulty of disassembly and extending maintenance time. Cable connectors are mostly welded, requiring professional tools and skills for disassembly and assembly, which is cumbersome and can easily lead to connector damage or poor contact. The connectors are also prone to loosening under vibration and pulling, causing unstable signal transmission or even interruption. Therefore, we propose a magnetically coupled non-contact pull-cord switch.

[0005] To achieve the above objectives, this application adopts the following technical solution: a magnetically coupled non-contact pull-cord switch, comprising a pull-cord switch body and a mounting bracket. Two L-shaped mounting plates are fixedly connected to the arc surface of the pull-cord switch body. Two mounting grooves are formed on the upper surface of the mounting bracket. The L-shaped mounting plates are slidably connected to the inner walls of the mounting grooves. A connection port is fixedly connected to the arc surface of the pull-cord switch body, and a connector is movably connected within the connection port. A cable is installed within the connector. A square groove is formed on the inner wall of the mounting groove. Two threaded rods are threadedly inserted into the mounting bracket, passing through the square groove. One end of each threaded rod is rotatably connected to a locking block, which is slidably connected to the inner wall of the square groove. A locking groove is formed on one side of each of the two L-shaped mounting plates, and the size of the locking block matches the size of the locking groove. A rotating shaft is fixedly connected to the other end of each threaded rod.

[0006] Preferably, the inner wall of the square groove has two guide grooves, and the inner walls of the two guide grooves are slidably connected to guide plates, which are fixedly connected to one side of the block.

[0007] Preferably, the arc surface of the rotating shaft is provided with a plurality of anti-slip grooves, and the plurality of anti-slip grooves are evenly distributed in a circumferential array on the arc surface of the rotating shaft.

[0008] Preferably, a fixing block is fixedly connected to the arc surface of the pull cord switch body, an arc-shaped block is fixedly connected to one end of the connection port, two positioning frames are fixedly connected to one end of the connection port, two positioning blocks are fixedly connected to the arc surface of the connector, the positioning blocks are slidably connected to the inner wall of the positioning frames, a slide is fixedly connected to the surface of the fixing block, a circular chamber is fixedly connected to the inner wall of the slide, a slide rod is slidably connected to the inner wall of the circular chamber, a clamp is fixedly connected to one end of the slide rod, the clamp is slidably connected to the inner wall of the slide, two springs are fixedly connected to one side of the clamp, the other ends of the two springs are fixedly connected to the inner wall of the slide, and the inner wall of the clamp abuts against the connector.

[0009] Preferably, the surface of the slide is provided with a sliding hole, and a connecting block is slidably connected to the inner wall of the sliding hole, and the connecting block is fixedly connected to the surface of the clamping plate.

[0010] Preferably, both the inner walls of the arc-shaped block and the clamping plate are fixedly connected with arc-shaped pads, which are made of silicone rubber.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] In this invention, the L-shaped mounting plate on the pull-cord switch body slides into the mounting slot of the mounting bracket, and a threaded rod drives the locking block to engage in the slot, thus achieving rapid assembly and disassembly of the pull-cord switch body and the mounting bracket. This simplifies the installation process, significantly shortens the time for equipment inspection, maintenance, and replacement, ensures that the equipment can quickly return to normal operation, and enhances the continuity and stability of equipment operation in industrial settings.

[0013] In this invention, the sliding cooperation between the positioning block and the positioning frame allows for quick positioning of the connection port and the connector, ensuring precise alignment. Simultaneously, the spring inside the slide pushes the clamp plate to tightly abut against the connector. With the support of the fixing block and the arc-shaped block, the connector can be securely fixed inside the connection port, preventing it from loosening or falling off, thus ensuring the reliability of the cable connection. Furthermore, the assembly and disassembly process requires no complex tools, improving ease of operation and further enhancing the overall stability of the equipment. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 In this utility model Figure 1 The unfolded diagram;

[0017] Figure 3 This is a schematic diagram of the square groove in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the fixing block in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the carriage in this utility model.

[0020] Legend: 1. Pull cord switch body; 2. Connection port; 3. Connector; 4. Cable; 5. L-shaped mounting plate; 6. Mounting bracket; 7. Mounting groove; 8. Slot; 9. Square groove; 10. Threaded rod; 11. Shaft; 12. Locking block; 13. Guide plate; 14. Guide groove; 15. Anti-slip groove; 16. Fixing block; 17. Arc-shaped block; 18. Slide; 19. Round compartment; 20. Slide rod; 21. Spring; 22. Clamping plate; 23. Arc-shaped pad; 24. Sliding hole; 25. Connecting block; 26. Positioning bracket; 27. Positioning block. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] Reference Figures 1-5As shown, this utility model provides a technical solution: a magnetically coupled non-contact pull-cord switch, including a pull-cord switch body 1 and a mounting bracket 6. Two L-shaped mounting plates 5 are fixedly connected to the arc surface of the pull-cord switch body 1. Two mounting grooves 7 are formed on the upper surface of the mounting bracket 6. The L-shaped mounting plates 5 are slidably connected to the inner walls of the mounting grooves 7. A connection port 2 is fixedly connected to the arc surface of the pull-cord switch body 1. A connector 3 is movably connected to the connection port 2, and a cable 4 is installed in the connector 3. A square groove 9 is formed on the inner wall of the mounting groove 7. Two threaded rods 10 are threadedly inserted into the mounting bracket 6, passing through the square groove 9. One end of each threaded rod 10 is rotatably connected to a locking block 12, which is slidably connected to the inner wall of the square groove 9. The two L-shaped mounting plates... One side of the pull rope switch 10 is provided with a slot 8. The size of the locking block 12 is adapted to the size of the slot 8. The other end of the threaded rod 10 is fixedly connected to a rotating shaft 11. The L-shaped mounting plate 5 on the pull rope switch body 1 slides into the mounting slot 7 of the mounting bracket 6. The threaded rod 10 drives the locking block 12 to engage with the fixed structure of the slot 8, realizing the quick assembly and disassembly of the pull rope switch body 1 and the mounting bracket 6. This simplifies the installation process, greatly shortens the time for equipment inspection, maintenance and replacement, ensures that the equipment can be quickly restored to normal operation, and enhances the continuity and stability of equipment operation in industrial scenarios. The inner wall of the square slot 9 is provided with two guide slots 14. The inner walls of the two guide slots 14 are slidably connected to guide plates 13. The guide plates 13 are fixedly connected to one side of the locking block 12. The guide groove 14 on the inner wall of the square groove 9 slides in cooperation with the guide plate 13 on one side of the locking block 12, which can accurately guide the sliding of the locking block 12, prevent the locking block 12 from shifting or getting stuck during movement, and ensure that the locking block 12 can stably and smoothly cooperate with the locking groove 8 of the L-shaped mounting plate 5. The arc surface of the rotating shaft 11 is provided with several anti-slip grooves 15, which are evenly distributed in a circumferential array on the arc surface of the rotating shaft 11. The anti-slip grooves 15 can increase the friction between the operator's hand and the rotating shaft 11, making it easier and more stable to rotate the rotating shaft 11 and drive the threaded rod 10 when installing and removing the pull rope switch, improving the convenience and efficiency of the installation and removal operation, and reducing the risk of operation errors caused by slippage. The arc surface of the pull rope switch body 1 is fixedly connected to a fixing block 16, one end of the connection port 2 is fixedly connected to an arc-shaped block 17, one end of the connection port 2 is fixedly connected to two positioning brackets 26, and the arc surface of the connector 3 is fixedly connected to two positioning blocks 2. 7. The positioning block 27 is slidably connected to the inner wall of the positioning frame 26. The surface of the fixing block 16 is fixedly connected to the slide 18. The inner wall of the slide 18 is fixedly connected to the round chamber 19. The inner wall of the round chamber 19 is slidably connected to the slide rod 20. One end of the slide rod 20 is fixedly connected to the clamping plate 22. The clamping plate 22 is slidably connected to the inner wall of the slide 18. Two springs 21 are fixedly connected to one side of the clamping plate 22. The other ends of the two springs 21 are fixedly connected to the inner wall of the slide 18. The inner wall of the clamping plate 22 abuts against the joint 3.The sliding engagement of positioning block 27 and positioning frame 26 allows for quick positioning of connection port 2 and connector 3, ensuring precise docking. Simultaneously, spring 21 within slide 18 pushes clamp 22 to tightly abut against connector 3. With the support of fixing block 16 and arc block 17, connector 3 can be securely fixed within connection port 2, preventing loosening or detachment and ensuring the reliability of cable 4 connection. Furthermore, the assembly and disassembly process requires no complex tools, enhancing operational convenience and further strengthening the overall stability of the equipment. Slide 18 has a sliding hole 24 on its surface, and a connecting block 25 is slidably connected to the inner wall of the sliding hole 24. The connecting block 25 is fixedly connected to the surface of clamp 22. When it is necessary to release the connector 3 from its fixation, the connecting block 25 can be pulled to cause the clamping plate 22 to slide along the inner wall of the slide 18 against the elastic force of the spring 21, thus disengaging the clamping plate 22 from the connector 3. At this time, the sliding engagement between the positioning block 27 and the positioning frame 26 facilitates the quick removal of the connector 3 from the connection port 2. Both the inner walls of the arc-shaped block 17 and the clamping plate 22 are fixedly connected with arc-shaped pads 23, which are made of silicone rubber. The silicone rubber arc-shaped pads 23 can increase the contact area and friction with the connector 3, further improving the fixing effect of the connector 3 and preventing the connector 3 from sliding. The silicone rubber material has a certain elasticity, which can buffer the compression between the connector 3 and the arc-shaped block 17 and the clamping plate 22, avoiding wear caused by hard contact. At the same time, the silicone rubber can also play a sealing role, reducing the entry of dust and moisture into the connection part.

[0023] Working Principle: In the assembly and fixing of the pull-cord switch body 1 and the mounting bracket 6, two L-shaped mounting plates 5 on the arc surface of the pull-cord switch body 1 form a sliding fit with two mounting grooves 7 on the upper surface of the mounting bracket 6, providing guidance for the initial positioning of both. Subsequently, by rotating the rotating shaft 11 on the mounting bracket 6, the threaded rod 10 fixed to it rotates within the mounting bracket 6. The threaded rod 10 drives a locking block 12, rotatably connected at one end, to slide along the inner wall of the square groove 9. At this time, the guide groove 14 in the square groove 9 slides into a guide plate 13 on one side of the locking block 12, providing precise guidance for the movement of the locking block 12, avoiding deviation or jamming, and ensuring that the locking block 12 stably engages in the locking groove 8 of the L-shaped mounting plate 5, completing the rapid fixing of the pull-cord switch body 1 and the mounting bracket 6. During disassembly, rotating the rotating shaft 11 in the opposite direction allows the locking block 12 to disengage from the locking groove 8. Combined with the sliding of the L-shaped mounting plate 5 and the mounting groove 7, the two are quickly separated, greatly simplifying the assembly and disassembly process. In addition, the anti-slip grooves 15 on the arc surface of the rotating shaft 11 can increase the friction of the hand, making it easier for the operator to rotate the rotating shaft 11 easily and stably, improving the efficiency of assembly and disassembly, and reducing the risk of operational errors.

[0024] Regarding the connection between cable 4 and pull-cord switch body 1, the connector 3 inside the connection port 2 slides and engages with the positioning frame 26 on the connection port 2 via the positioning block 27, achieving quick and precise docking. Simultaneously, the fixing block 16 on the arc surface of the pull-cord switch body 1 supports the slide frame 18. The circular chamber 19 inside the slide frame 18 guides the slide rod 20 to move the clamping plate 22. Under the elastic force of the spring 21, the clamping plate 22 tightly abuts against the connector 3. Combined with the support of the arc-shaped block 17, the connector 3 is securely fixed inside the connection port 2, effectively preventing loosening of the connector 3 due to equipment vibration or external pulling, ensuring stable signal transmission. When it is necessary to disassemble the connector 3, pulling the connecting block 25 fixed to the clamping plate 22 on the surface of the slide frame 18 causes the clamping plate 22 to slide against the elastic force of the spring 21, allowing the clamping plate 22 to detach from the connector 3. Then, utilizing the sliding engagement between the positioning block 27 and the positioning frame 26, the connector 3 can be quickly removed. The entire process requires no special tools and is easy to operate. In addition, the silicone rubber arc-shaped pads 23 on the inner walls of the arc-shaped block 17 and the clamping plate 22 not only increase the contact friction with the joint 3 and improve the fixing effect, but also buffer the compression to avoid wear, and also play a sealing role to reduce the impact of dust and moisture on the connection parts.

[0025] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A magnetically coupled non-contact pull-cord switch, characterized in that, The device includes a pull-cord switch body (1) and a mounting bracket (6). Two L-shaped mounting plates (5) are fixedly connected to the arc surface of the pull-cord switch body (1). Two mounting grooves (7) are formed on the upper surface of the mounting bracket (6). The L-shaped mounting plates (5) are slidably connected to the inner walls of the mounting grooves (7). A connection port (2) is fixedly connected to the arc surface of the pull-cord switch body (1). A connector (3) is movably connected within the connection port (2). A cable (4) is installed within the connector (3). The inner walls of the mounting grooves (7) are... A square groove (9) is provided. Two threaded rods (10) are threadedly inserted into the mounting bracket (6). The threaded rods (10) pass through the square groove (9). One end of the threaded rod (10) is rotatably connected to a locking block (12). The locking block (12) is slidably connected to the inner wall of the square groove (9). One side of each of the two L-shaped mounting plates (5) is provided with a locking groove (8). The size of the locking block (12) is adapted to the size of the locking groove (8). The other end of the threaded rod (10) is fixedly connected to a rotating shaft (11).

2. The magnetically coupled non-contact pull-cord switch according to claim 1, characterized in that: The inner wall of the square groove (9) has two guide grooves (14), and the inner walls of the two guide grooves (14) are slidably connected to guide plates (13), and the guide plates (13) are fixedly connected to one side of the block (12).

3. The magnetically coupled non-contact pull-cord switch according to claim 1, characterized in that: The rotating shaft (11) has a number of anti-slip grooves (15) on its arc surface. The number of anti-slip grooves (15) are evenly distributed in a circumferential array on the arc surface of the rotating shaft (11).

4. A magnetically coupled non-contact pull-cord switch according to claim 1, characterized in that: The pull-cord switch body (1) has a fixed block (16) fixedly connected to its arc surface. One end of the connection port (2) has an arc block (17) fixedly connected to it. One end of the connection port (2) has two positioning frames (26) fixedly connected to it. The arc surface of the connector (3) has two positioning blocks (27) fixedly connected to it. The positioning blocks (27) are slidably connected to the inner wall of the positioning frames (26). The surface of the fixed block (16) has a slide (18) fixedly connected to it. The inner wall of the slide (18) has a round chamber (19) fixedly connected to it. The inner wall of the round chamber (19) has a slide rod (20) slidably connected to it. One end of the slide rod (20) has a clamp (22) fixedly connected to it. The clamp (22) is slidably connected to the inner wall of the slide (18). One side of the clamp (22) has two springs (21) fixedly connected to it. The other ends of the two springs (21) are fixedly connected to the inner wall of the slide (18). The inner wall of the clamp (22) abuts against the connector (3).

5. A magnetically coupled non-contact pull-cord switch according to claim 4, characterized in that: The slide (18) has a sliding hole (24) on its surface. A connecting block (25) is slidably connected to the inner wall of the sliding hole (24). The connecting block (25) is fixedly connected to the surface of the clamp (22).

6. A magnetically coupled non-contact pull-cord switch according to claim 4, characterized in that: The inner walls of the arc block (17) and the clamping plate (22) are both fixedly connected with arc pads (23), which are made of silicone rubber.

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