A magnetic switching device

Abstract

This utility model discloses a magnetically attached switch on / off device, relating to the field of switch on / off technology. It includes: a housing with a housing fixing hole, a bolt clearance cavity, a contact piece slot, a movable block limiting slot, a second spring mounting post, a movable block guide post hole, and a movable block moving cavity; the contact piece is fixed in the contact piece slot; a connecting bridge is disposed in the first spring mounting cavity; a connecting bolt passes through the connecting bolt mounting cavity; a first spring is disposed between the first spring mounting post and the connecting bridge; and a second spring is disposed between the second spring mounting post and the second spring mounting cavity. Through an openable and closable magnet compartment door combined with a spring limiting pin mechanism, the device ensures stable installation of the strong magnet while facilitating maintenance and replacement. It guarantees the reliability of emergency disconnection, effectively preventing mechanical damage caused by misoperation, and its quickly replaceable magnet structure further improves the ease of maintenance and service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of switch on / off technology, and in particular to a magnetic switch on / off device. Background Technology

[0002] In modern industrial production environments, with the widespread application of highly automated equipment, safety interlocking mechanisms have become a rigid requirement for ensuring personnel safety—especially for large, high-risk equipment, where the "access control closure priority" operating principle must be strictly followed. However, some operators have cognitive biases and a sense of complacency, repeatedly violating safety procedures and engaging in unauthorized cross-process operations. This systemic safety failure caused by human factors not only leads to serious mechanical injury accidents but also causes direct economic losses, indirect losses, and incalculable brand reputation risks for enterprises.

[0003] In order to realize a device that cannot be operated when the equipment door is not closed, this utility model provides a magnetic switch on / off device. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model proposes a magnetic switching device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetically attracted switch on / off device, comprising: a housing, having a housing fixing hole, a bolt clearance cavity, a contact piece slot, a movable block limiting slot, a second spring mounting post, a movable block guide post hole, and a movable block moving cavity; a movable block, installed in the movable block limiting slot, the movable block having a first spring mounting post, a movable block buckle, a first spring mounting cavity, a second spring mounting cavity, a connecting bolt mounting cavity, and a movable block guide post.

[0006] Specifically, the contact piece is fixed in the contact piece slot; the connecting bridge is disposed in the first spring mounting cavity; the connecting bolt passes through the connecting bolt mounting cavity; the first spring is disposed between the first spring mounting post and the connecting bridge; and the second spring is disposed between the second spring mounting post and the second spring mounting cavity.

[0007] The strong magnetic sleeve is threadedly connected to the connecting bolt and abuts against one end of the guide post of the movable block. A strong magnet is detachably installed inside the strong magnetic sleeve.

[0008] The present invention is further configured such that the movable block is engaged with the movable block limiting slot by the movable block buckle to limit its vertical movement range.

[0009] The present invention is further configured such that multiple structures are formed inside the housing by partitions;

[0010] The bolt clearance cavity is used to avoid the wiring bolts on the contact piece, the movable block guide post hole cooperates with the movable block guide post, and the movable block moving cavity is the moving space of the movable block.

[0011] The present invention is further configured such that a pick-up and put-down door is rotatably mounted on the upper limit side wall of the strong magnetic sleeve, and a docking assembly is provided at the top of the strong magnetic sleeve and the top of the pick-up and put-down door respectively; the docking assembly includes a limiting frame and a connecting seat, the limiting frame is fixedly mounted on the top of the strong magnetic sleeve, the connecting seat is fixedly mounted on the top of the pick-up and put-down door, a limiting rod is slidably mounted on the upper limit of the limiting frame, and an insert plate is fixedly mounted on the connecting seat, and the limiting rod and the insert plate are engaged.

[0012] The present invention is further configured such that the bottom end of the limiting rod is inclined, the upper end surface of the insert plate is provided with a limiting groove, and the limiting rod is inserted into the limiting groove through the bottom inclined surface.

[0013] The present invention is further configured such that a pull plate is fixedly installed at the top of the limiting rod, and a return spring is fixedly connected between the pull plate and the limiting frame.

[0014] The present invention is further configured such that multiple abutment rods are fixedly installed on both the strong magnetic sleeve and the inner wall of the pick-up and put-down door, and the abutment rods are used to limit and fix the strong magnet.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This magnetic switch consists of a housing, a movable block, a contact plate, a connecting bridge, a spring assembly, and a strong magnetic mechanism. When the equipment door is away, the spring assembly keeps the connecting bridge separated from the contact plate, cutting off the equipment start signal. When the metal door approaches, the strong magnet is attracted, causing the movable block to compress the spring, making the connecting bridge and contact plate conductive, and outputting a safety signal to allow the equipment to operate. The openable and closable magnetic door, combined with the spring-loaded limit pin mechanism, ensures both stable installation of the strong magnet and easy maintenance and replacement. It guarantees reliable emergency disconnection, effectively preventing mechanical damage caused by misoperation, and its quickly replaceable magnet structure further enhances the ease of maintenance and extends the equipment's service life.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the strong magnetic sleeve of this utility model;

[0023] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the shell structure of this utility model;

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure of the movable block of this utility model.

[0027] Reference numerals: 100, housing; 101, housing fixing hole; 102, bolt clearance cavity; 103, contact piece slot; 104, movable block limiting slot; 105, second spring mounting post; 106, movable block guide post hole; 107, movable block moving cavity; 200, movable block; 201, first spring mounting post; 202, movable block buckle; 203, first spring mounting cavity; 204, second spring mounting cavity; 205, connecting... 1. Bolt mounting cavity; 206. Movable block guide post; 300. Contact piece; 400. Connecting bridge; 500. Connecting bolt; 600. First spring; 700. Second spring; 800. Strong magnetic sleeve; 801. Strong magnet; 802. Pick-up and put-out door; 803. Abutment rod; 900. Limit frame; 901. Connecting seat; 902. Limiting insertion rod; 903. Insert plate; 904. Limiting groove; 905. Pull plate; 906. Return spring. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figure 1-8 This utility model provides a technical solution: a magnetically attached switch on / off device, comprising: a housing 100, having a housing fixing hole 101, a bolt clearance cavity 102, a contact piece slot 103, a movable block limiting slot 104, a second spring mounting post 105, a movable block guide post hole 106, and a movable block moving cavity 107; and a movable block 200, installed in the movable block limiting slot 104, the movable block 200 having a first spring mounting post 201, a movable block buckle 202, a first spring mounting cavity 203, a second spring mounting cavity 204, a connecting bolt mounting cavity 205, and a movable block guide post 206.

[0032] Specifically, the contact piece 300 is fixed in the contact piece slot 103; the connecting bridge 400 is disposed in the first spring mounting cavity 203; the connecting bolt 500 passes through the connecting bolt mounting cavity 205; the first spring 600 is disposed between the first spring mounting post 201 and the connecting bridge 400; and the second spring 700 is disposed between the second spring mounting post 105 and the second spring mounting cavity 204.

[0033] A strong magnetic sleeve 800 is threadedly connected to the connecting bolt 500 and abuts against one end of the movable block guide post 206. A strong magnet 801 is detachably installed inside the strong magnetic sleeve 800.

[0034] The movable block 200 is engaged with the movable block limiting slot 104 by the movable block buckle 202 to limit its vertical movement range.

[0035] The housing 100 has multiple internal structures formed by partitions. A bolt clearance cavity 102 is used to avoid the wiring bolts on the contact piece 300. A contact piece slot 103 is used to install the contact piece 300, allowing it to be fixed to the housing 100 without bolts. A movable block limiting slot 104 is used to install the movable block 200. To prevent the movable block 200 from detaching after installation, a movable block buckle 202 is provided on the movable block 200 to limit its vertical movement. A second spring mounting post 105 is used to install the second spring 700.

[0036] The active fastener 200 is provided with a first spring mounting cavity 203. The bridging piece 400 is placed into the first spring mounting cavity 203, and a first spring 600 is installed between the bridging piece 400 and the first spring mounting post 201.

[0037] The movable block 200 is inserted into the movable block limiting slots 104 on both sides of the housing 100, and at this time the second spring 700 is embedded in the second spring mounting cavity 204.

[0038] Insert the connecting bolt 500 into the connecting bolt mounting cavity 205, and use the thread on the strong magnet 800 to engage with the connecting bolt 500. After the thread is screwed in, it will contact one end of the movable block guide post 206.

[0039] A retrieval door 802 is rotatably mounted on the side wall of a strong magnetic housing 800. A docking assembly is provided at the top of the strong magnetic housing 800 and the retrieval door 802 respectively. The docking assembly includes a limiting frame 900 and a connecting seat 901. The limiting frame 900 is fixedly mounted on the top of the strong magnetic housing 800, and the connecting seat 901 is fixedly mounted on the top of the retrieval door 802. A limiting rod 902 is slidably mounted on the limiting frame 900. A plate 903 is fixedly mounted on the connecting seat 901. The limiting rod 902 and the plate 903 are engaged.

[0040] The bottom end of the limiting rod 902 is set with an inclined surface, and the upper end surface of the insert plate 903 is provided with a limiting groove 904. The limiting rod 902 is inserted and engaged with the limiting groove 904 through the bottom inclined surface.

[0041] A pull plate 905 is fixedly installed at the top of the limiting rod 902, and a return spring 906 is fixedly connected between the pull plate 905 and the limiting frame 900.

[0042] Multiple abutment rods 803 are fixedly installed on the inner walls of both the strong magnetic housing 800 and the pick-up / placement door 802. The abutment rods 803 are used to limit and fix the strong magnet 801.

[0043] Working principle:

[0044] When the equipment door (which must be made of a material that can be attracted by a strong magnet) is not near the switch, the connecting bridge 400 and the contact piece 300 inside the switch will not make contact, cutting off the signal transmission. At this time, the equipment does not receive a signal indicating that the door is closed, the equipment start button cannot be operated normally, and the machine cannot be started.

[0045] When the equipment door approaches the switch, the strong magnet 801 on the switch is attracted by the equipment door, pulling the movable block 200. This causes the first spring 600 and the second spring 700 to deform, and the connecting bridge 400 on the movable block 200 contacts the contact piece 300 on the housing 100, ultimately creating a conductive signal. At this time, a signal indicating that the door is closed is given, and the equipment start button can be operated normally, allowing the operator to start the machine. When the machine finishes working and the equipment door is opened, the connecting bridge 400 and the contact piece 300 disconnect due to the reaction force of the first spring 600 and the second spring 700, interrupting the conductive signal. The equipment cannot be started normally at this time, ensuring the safety of the operator.

[0046] When replacing the strong magnet 801, place the strong magnet 801 inside the strong magnet housing 800, close the retrieval door 802, so that the abutment rod 803 on the inner wall of the strong magnet housing 800 and the retrieval door 802 abuts against the strong magnet 801, thus acting as a limit. Then, insert the insertion plate 903 into the limiting frame 900, so that the inclined surface of the insertion plate 903 engages with the limiting rod 902, causing the limiting rod 902 to move upward, thereby extending the return spring 906. Then, when the upper limit groove 904 of the insertion plate 903 aligns with the limiting rod 902, the return spring 906 returns to its original deformation, causing the bottom end of the limiting rod 902 to insert into the limiting groove 904, completing the limiting of the retrieval door 802. To open the retrieval door 802, simply pull upwards on 905.

[0047] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A magnetically attracted switching device, characterized in that, include: The housing (100) is provided with a housing fixing hole (101), a bolt relief cavity (102), a contact piece slot (103), a movable block limiting slot (104), a second spring mounting post (105), a movable block guide post hole (106), and a movable block moving cavity (107). The movable block (200) is installed in the movable block limiting slot (104). The movable block (200) is provided with a first spring mounting post (201), a movable block buckle (202), a first spring mounting cavity (203), a second spring mounting cavity (204), a connecting bolt mounting cavity (205), and a movable block guide post (206). The contact piece (300) is fixed in the contact piece slot (103); A connecting bridge (400) is disposed within the first spring mounting cavity (203); A connecting bolt (500) is inserted into the connecting bolt mounting cavity (205); A first spring (600) is disposed between the first spring mounting post (201) and the connecting bridge (400); The second spring (700) is disposed between the second spring mounting post (105) and the second spring mounting cavity (204); A strong magnetic sleeve (800) is threadedly connected to the connecting bolt (500) and abuts against one end of the movable block guide post (206). A strong magnet (801) is detachably installed inside the strong magnetic sleeve (800).

2. The magnetic switching device according to claim 1, characterized in that, The movable block (200) is engaged with the movable block limiting slot (104) by the movable block buckle (202) to limit its vertical movement range.

3. The magnetic switching device according to claim 1, characterized in that, The shell (100) has multiple structures formed inside by partitions; The bolt clearance cavity (102) is used to avoid the wiring bolt on the contact piece (300), the movable block guide post hole (106) cooperates with the movable block guide post (206), and the movable block moving cavity (107) is the moving space of the movable block (200).

4. The magnetic switching device according to claim 1, characterized in that, The strong magnetic housing (800) is rotatably mounted on the side wall with a pick-up and put-out door (802), and the top of the strong magnetic housing (800) and the pick-up and put-out door (802) are respectively provided with docking components; The docking assembly includes a limiting frame (900) and a connecting seat (901). The limiting frame (900) is fixedly installed on the top of the strong magnetic housing (800), and the connecting seat (901) is fixedly installed on the top of the pick-up and put-out door (802). The limiting frame (900) is slidably installed with a limiting rod (902) at the upper limit, and the connecting seat (901) is fixedly installed with a plug plate (903). The limiting rod (902) and the plug plate (903) are engaged.

5. The magnetic switching device according to claim 4, characterized in that, The bottom end of the limiting rod (902) is set with an inclined surface, and the upper end surface of the insert plate (903) is provided with a limiting groove (904). The limiting rod (902) is inserted and engaged with the limiting groove (904) through the bottom inclined surface.

6. The magnetic switching device according to claim 4, characterized in that, A pull plate (905) is fixedly installed at the top of the limiting rod (902), and a return spring (906) is fixedly connected between the pull plate (905) and the limiting frame (900).

7. The magnetic switching device according to claim 4, characterized in that, Multiple abutment rods (803) are fixedly installed on the inner walls of the strong magnetic housing (800) and the pick-up and put-out door (802). The abutment rods (803) are used to limit and fix the strong magnet (801).

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