Sliding limiting type contact structure of industrial safety lock and manufacturing method of sliding limiting type contact structure

Abstract

The invention relates to a sliding limiting type contact structure of an industrial safety lock and a manufacturing method thereof.The sliding limiting type contact structure comprises a shell, the inner wall of the shell is slidably connected with a contact body used for being clamped with a lock cylinder, the contact body is clamped with and separated from the lock cylinder in the sliding process, and the side, away from the lock cylinder, of the contact body is connected with a magnetic attraction piece; a magnetic attraction assembly is arranged on the side, away from the contact body, of the magnetic attraction piece and comprises an electromagnet, and the electromagnet is connected with the inner wall of the shell. When a lock body is locked, a power source is turned on, the electromagnet generates repelling acting force on the magnetic attraction piece, the magnetic attraction piece moves in the direction close to the lock cylinder, and the contact body and the lock cylinder are clamped; when the lock body is unlocked, the current direction is changed, and the contact body is away from the lock cylinder; the state of the lock body is changed through interaction between the magnetic attraction piece and the electromagnet, use of deformation parts such as a spring is reduced, and then the frequency of repairing or replacing parts of the lock body is reduced to a certain degree.

Description

Technical Field

[0001] The present application relates to the field of safety door lock switches, and in particular to a sliding limit contact structure of an industrial safety lock and a manufacturing method thereof. Background Art

[0002] Industrial safety locks are safety facilities used in industrial sites, mechanical equipment and other fields. Their main function is to prevent accidental startup, misoperation or unauthorized access.

[0003] At present, there is a multi-protection industrial safety lock, which is provided with an electromagnet and a sliding contact engaged with a lock tongue, one end of the sliding contact is connected to a locking spring, and the locking spring is connected to a magnetic block. The sliding of the magnetic block is controlled by the electromagnet, thereby driving the locking spring to extend and retract, thereby realizing the engagement and separation of the sliding contact with the lock tongue, and enhancing the safety of the lock body through the double locking structure.

[0004] With regard to the above-mentioned related technologies, the locking spring needs to be frequently compressed and stretched during the frequent opening and closing of the lock body, so that the locking spring is affected by metal fatigue, resulting in microcracks and deformation of the material, thereby shortening the service life of the spring and requiring frequent inspection or replacement of parts of the lock body. Summary of the invention

[0005] The sliding limit contact structure of an industrial safety lock provided in the present application adopts the following technical solution: A sliding limit contact structure for an industrial safety lock comprises a shell and a remote control device, wherein the inner wall of the shell is slidably connected with a contact body for engaging with a lock core, and the contact body is engaged with and separated from the lock core during sliding, and a magnetic attraction sheet is connected to the side of the contact body facing away from the lock core, and a magnetic attraction component is provided on the side of the magnetic attraction sheet facing away from the contact body, and the magnetic attraction component comprises an electromagnet and the electromagnet is connected to the inner wall of the shell, and a power interface connected to the outer wall of the shell is provided on the inner wall of the shell facing the electromagnet, and a controller for controlling the on and off of the power supply is also provided in the shell, and the controller is electrically connected to the remote control device.

[0006] By adopting the above technical scheme, when locking the lock body, the electromagnet is connected to the power supply through the power interface, and then the power is turned on by the remote control device, so that the electromagnet generates a repulsive force on the magnetic suction piece, and the magnetic suction piece moves toward the direction close to the lock core under the action of the electromagnet, and the magnetic suction piece drives the contact body and the lock core to achieve engagement, thereby locking the lock body; when opening the lock body, the power is turned on and the direction of the current is changed, so that the magnetic suction piece moves away from the lock core under the action of the electromagnet, and the contact body moves away from the lock core, thereby unlocking the lock body; the state of the lock body is changed by the interaction between the magnetic suction piece and the electromagnet, thereby reducing the use of deformable parts such as springs, thereby reducing the frequency of lock body maintenance or replacement of parts to a certain extent.

[0007] Optionally, the magnetic attraction component also includes a rotating shaft located between the electromagnet and the magnetic attraction plate, the extension direction of the rotating shaft is parallel to the plane where the magnetic attraction plate is located, both ends of the rotating shaft are connected to the inner wall of the outer shell, and the outer wall of the rotating shaft is sleeved with a rotating magnetic block. When the rotating magnetic block is stationary, the plane where the polarity of the rotating magnetic block is displayed is parallel to the plane where the magnetic attraction plate is located.

[0008] By adopting the above technical scheme, when the lock body is locked, the power is turned on to make the polarity of the electromagnet the same as the polarity of the magnetic attraction plate. At this time, the rotating magnetic block rotates around the rotating axis under the action of the electromagnet, and the side of the rotating magnetic block with the same polarity as the electromagnet faces the magnetic attraction plate, and then the magnetic attraction plate moves in the direction close to the lock core under the action of the rotating magnetic block, so that the contact body and the lock core are continuously engaged; when the lock body is opened, the power is turned on and the direction of the current is changed to make the polarity of the electromagnet opposite to the polarity of the magnetic attraction plate. At this time, the rotating magnetic block rotates around the rotating axis under the action of the electromagnet, and the side of the rotating magnetic block with the same magnetic property as the electromagnet faces the magnetic attraction plate, and then the magnetic attraction plate moves in the direction away from the lock core under the action of the rotating magnetic block, so that the contact body and the lock core are continuously separated; by rotating the magnetic block, the electromagnet is kept in a powered state, and the contact body is continuously in a state of being engaged or separated from the lock core.

[0009] Optionally, the inner wall of the shell is connected to a limiting shaft, the magnetic attraction plate is located at one end of the rotating magnetic block close to the limiting shaft, the electromagnet includes a first electromagnet and a second electromagnet, the first electromagnet is located at one end of the rotating magnetic block close to the limiting shaft, the second electromagnet is located at one end of the rotating magnetic block away from the limiting shaft, and when the rotating magnetic block is stationary, the limiting shaft abuts against one side of the rotating magnetic block.

[0010] By adopting the above technical solution, when the rotating magnetic block causes the contact body and the lock core to be continuously engaged, the side of the rotating magnetic block facing away from the contact body abuts against the limit shaft; when the rotating magnetic block causes the contact body and the lock core to be continuously separated, the side of the rotating magnetic block facing the contact body abuts against the limit shaft, thereby allowing the rotating magnetic block to provide a relatively stable force for the magnetic attraction plate.

[0011] Optionally, an elastic protective cover is provided around the rotating magnetic block, and when the rotating magnetic block is stationary, the elastic protective cover abuts against one side of the rotating magnetic block.

[0012] By adopting the above technical solution, frequent collisions between the rotating magnetic block and the limiting shaft may cause changes in the microstructure inside the rotating magnetic block, resulting in weakening of the magnetism; when the rotating magnetic block collides with the limiting shaft, the elastic protective cover has a certain buffering effect on the rotating magnetic block, thereby reducing the risk of weakening of the magnetism of the rotating magnetic block to a certain extent.

[0013] Optionally, a first clamping groove is provided on the side of the elastic protective sleeve facing the electromagnet, the extension direction of the first clamping groove is perpendicular to the extension direction of the rotating shaft and the first clamping groove is connected to the outer wall of the side of the elastic protective sleeve facing the limiting shaft, and the limiting shaft abuts against the inner wall of the first clamping groove.

[0014] By adopting the above technical solution, when the rotating magnetic block causes the contact body to be continuously engaged with the lock core, the limiting shaft abuts against the inner wall of the first engaging groove, thereby achieving the limiting of the rotating magnetic block.

[0015] Optionally, a second snap-in groove is further provided on the side of the elastic protective sleeve facing the electromagnet, wherein the extension direction of the second snap-in groove is perpendicular to the extension direction of the rotating shaft and the second snap-in groove is connected to the outer wall of the side of the elastic protective sleeve away from the limiting shaft.

[0016] By adopting the above technical solution, when the contact body is separated from the lock core, the power is turned on and the current direction is changed, and the rotating magnetic block rotates under the action of the electromagnet until the limiting shaft abuts against the inner wall of the second clamping groove, and the limiting shaft limits the rotating magnetic block.

[0017] Optionally, the lock core includes a key core, a turntable is provided on the outer wall of the key core, a limiting groove is provided on the side of the turntable facing the contact body, an extension direction of the limiting groove is parallel to the sliding direction of the contact body, and the contact body is slidably connected to the lock core through the limiting groove.

[0018] By adopting the above technical solution, when the contact body is engaged with the lock core, the contact body is located in the engaging groove to engage the lock core. When the contact body moves away from the lock core under the action of the magnetic suction component, the contact body disengages from the limiting groove, and then the staff unlocks the lock by turning the key core.

[0019] Optionally, a blocking piece is provided between the magnetic attraction component and the magnetic attraction sheet, and the blocking piece is connected to the inner wall of the shell.

[0020] By adopting the above technical solution, when the contact body moves in the direction away from the lock core under the action of the magnetic attraction component, the baffle limits the magnetic attraction plate, making it difficult for the magnetic attraction plate to be adsorbed on the surface of the rotating magnetic block, thereby reducing the interference of the magnetic attraction plate on the rotating magnetic block when the rotating magnetic block rotates.

[0021] Optionally, limit blocks are respectively provided on both sides of the contact body, the limit blocks are connected to the inner wall of the shell, and the outer wall of the limit block facing the contact body is provided with a slide groove matching the contact body, and the opening direction of the slide groove is parallel to the sliding direction of the contact body.

[0022] By adopting the above technical solution, when the contact body slides, the limit block limits the contact body through the sliding groove, so that the contact body is more stable during the sliding process.

[0023] The present application provides a method for manufacturing a sliding limit contact structure of an industrial safety lock using the following technical solutions: A method for manufacturing a sliding limit contact structure of an industrial safety lock comprises the following steps: S1. The contact body is made of metal material, and the contact body is connected to the magnetic sheet and placed inside the housing; S2. Assemble the magnetic assembly and place it in the housing on the side away from the contact body; S3. Connecting the electromagnet to a power source; S4. Turn on the power to test the function of the contact structure.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. When locking the lock body, connect the electromagnet to the power supply through the power interface, then turn on the power supply, so that the electromagnet generates a repulsive force on the magnetic sheet, and the magnetic sheet moves toward the lock core under the action of the electromagnet, and the magnetic sheet drives the contact body to engage with the lock core to lock the lock body; when opening the lock body, turn on the power supply and change the direction of the current, so that the magnetic sheet moves away from the lock core under the action of the electromagnet, and the contact body moves away from the lock core to unlock the lock body; the state of the lock body is changed through the interaction between the magnetic sheet and the electromagnet, reducing the use of deformable parts such as springs, thereby reducing the frequency of lock body maintenance or replacement of parts to a certain extent. ; 2. When locking the lock body, turn on the power supply so that the polarity of the electromagnet is the same as that of the magnetic sheet. At this time, the rotating magnetic block rotates around the rotating axis under the action of the electromagnet, and the side of the rotating magnetic block with the same polarity as the electromagnet faces the magnetic sheet, and then the magnetic sheet moves towards the lock core under the action of the rotating magnetic block, so that the contact body and the lock core are continuously engaged; when opening the lock body, turn on the power supply and change the direction of the current so that the polarity of the electromagnet is opposite to that of the magnetic sheet. At this time, the rotating magnetic block rotates around the rotating axis under the action of the electromagnet, and the side of the rotating magnetic block with the same magnetic property as the electromagnet faces the magnetic sheet, and then the magnetic sheet moves away from the lock core under the action of the rotating magnetic block, so that the contact body and the lock core are continuously separated; by rotating the magnetic block, the electromagnet is kept in a powered state, and the contact body is continuously in a state of being engaged or separated from the lock core; 3. When the rotating magnetic block causes the contact body and the lock core to be continuously engaged, the side of the rotating magnetic block facing away from the contact body abuts against the limit shaft. When the rotating magnetic block causes the contact body and the lock core to be continuously separated, the side of the rotating magnetic block facing the contact body abuts against the limit shaft, thereby allowing the rotating magnetic block to provide a relatively stable force for the magnetic suction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present application; Figure 3 It is a schematic diagram of the structure inside the housing of an embodiment of the present application; In the figure: 1. casing; 11. power interface; 12. controller; 2. lock core; 21. key core; 22. turntable; 221. limit slot; 3. contact body; 4. magnetic sheet; 5. magnetic assembly; 51. electromagnet; 511. first electromagnet; 512. second electromagnet; 52. rotating shaft; 53. rotating magnetic block; 54. limit shaft; 55. elastic protective cover; 551. first snap-in slot; 552. second snap-in slot; 56. limit block; 561. slide slot; 6. baffle; 7. remote control device. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail.

[0027] The present application embodiment discloses a sliding limit contact structure of an industrial safety lock. Figure 1 and Figure 2 A sliding limit contact structure of an industrial safety lock comprises a shell 1 and a remote control device 7, wherein a contact body 3 for engaging with a lock core 2 is slidably connected to the inner wall of the shell 1, a magnetic attraction sheet 4 is connected to the side of the contact body 3 away from the lock core 2, a magnetic attraction component 5 is arranged at intervals on the side of the magnetic attraction sheet 4 away from the contact body 3, the magnetic attraction component 5 comprises an electromagnet 51 and the electromagnet 51 is connected to the inner wall of the shell 1, a power interface 11 connected to the inner wall of the shell 1 is arranged on the outer wall of the shell 1 away from the lock core 2, a controller 12 for controlling the on and off of the power supply is also arranged in the shell 1, and the controller 12 is electrically connected to the remote control device 7; the lock core 2 comprises a key core 21, a turntable 22 is sleeved on the outer wall of the key core 21, a limit groove 221 is arranged on the side of the turntable 22 facing the contact body 3, the extension direction of the limit groove 221 is parallel to the sliding direction of the contact body 3, and the contact body 3 is engaged with the lock core 2 through the limit groove 221.

[0028] When locking the lock body, the electromagnet 51 is connected to the power supply through the power interface 11, and then the power is turned on through the remote control device 7, so that the electromagnet 51 produces a repulsive force on the magnetic suction piece 4, and the magnetic suction piece 4 moves in the direction close to the lock core 2 under the action of the electromagnet 51, and the magnetic suction piece 4 drives the contact body 3 to approach the turntable 22 until the contact body 3 abuts against the inner wall of the limiting groove 221, and the contact body 3 and the lock core 2 are engaged to lock the lock body; when opening the lock body, the power is turned on and the current direction is changed, so that the magnetic suction piece 4 moves in the direction away from the lock core 2 under the action of the electromagnet 51, and the magnetic suction piece 4 drives the contact body 3 away from the turntable 22 until the contact body 3 is separated from the limiting groove 221, and the contact body 3 and the lock core 2 are separated, and then the staff can open the lock body by rotating the lock core 2; the state of the lock body is changed by the interaction between the magnetic suction piece 4 and the electromagnet 51, thereby reducing the use of deformable parts such as springs, thereby reducing the frequency of lock body maintenance or replacement of parts to a certain extent.

[0029] Reference Figure 3 The magnetic attraction component 5 also includes a rotating shaft 52 located between the electromagnet 51 and the magnetic attraction sheet 4, the extending direction of the rotating shaft 52 is parallel to the plane where the magnetic attraction sheet 4 is located, both ends of the rotating shaft 52 are connected to the inner wall of the shell 1, and a rotating magnetic block 53 is sleeved on the outer wall of the rotating shaft 52. The inner wall of the shell 1 is also connected to a limiting shaft 54, and the axis of the limiting shaft 54 ​​intersects perpendicularly with the axis of the rotating shaft 52. The magnetic attraction sheet 4 is located at one end of the rotating magnetic block 53 close to the limiting shaft 54. The electromagnet 51 includes a first electromagnet 511 and a second electromagnet 512. The first electromagnet 511 is located at one end of the rotating magnetic block 53 close to the limiting shaft 54, and the second electromagnet 512 is located at one end of the rotating magnetic block 53 away from the limiting shaft 54. When the rotating magnetic block 53 is stationary, the limiting shaft 54 ​​abuts against one side of the rotating magnetic block 53.

[0030] When the lock body is locked, the power is turned on to energize the second electromagnet 512 and make the polarity of the second electromagnet 512 the same as that of the magnetic sheet 4. At this time, the rotating magnetic block 53 rotates around the rotating shaft 52 under the action of the electromagnet 51, and makes the rotating magnetic block 53 and the electromagnet 51 The side with the same polarity faces the magnetic sheet 4, and then the magnetic sheet 4 is moved toward the direction close to the lock cylinder 2 under the action of the rotating magnetic block 53 until the contact body 3 abuts against the inner wall of the limiting groove 221, and the contact body 3 and the lock cylinder 2 are snap-fitted to lock the lock body. At this time, the side of the rotating magnetic block 53 facing away from the contact body 3 abuts against the limiting shaft 54, so that the rotating magnetic block 53 provides a relatively stable force for the magnetic sheet 4, so that the contact body 3 and the lock cylinder 2 are continuously in a snap-fitted state; when the lock body is opened, the power is turned on and the current direction is changed. The first electromagnet 511 is energized and the polarity of the first electromagnet 511 is opposite to that of the magnetic attraction plate 4. At this time, the rotating magnetic block 53 rotates around the rotating shaft 52 under the action of the electromagnet 51, and the rotating magnetic block 53 and the electromagnet 51 The side with the same magnetic property is turned toward the magnetic attraction plate 4 until the contact body 3 is disengaged from the limiting groove 221, and the contact body 3 and the lock core 2 are separated, and then the magnetic attraction plate 4 is moved away from the lock core 2 under the action of the rotating magnetic block 53. At this time, the rotating magnetic block 53 is in contact with the limiting shaft 54 ​​on the side facing the contact body 3, so that the rotating magnetic block 53 provides a relatively stable force for the magnetic attraction plate 4, so that the contact body 3 and the lock core 2 are continuously separated; by rotating the magnetic block 53, the electromagnet 51 is kept in a powered state, and the contact body 3 is continuously in a state of being engaged or separated from the lock core 2.

[0031] Reference Figure 2 An elastic protective sleeve 55 is arranged around the rotating magnetic block 53. A first clamping groove 551 and a second clamping groove 552 are provided on the side of the elastic protective sleeve 55 facing the electromagnet 51. The extension directions of the first clamping groove 551 and the second clamping groove 552 are perpendicular to the extension direction of the rotating shaft 52. The first clamping groove 551 is connected to the outer wall of the elastic protective sleeve 55 facing the limiting shaft 54, and the second clamping groove 552 is connected to the outer wall of the elastic protective sleeve 55 away from the limiting shaft 54. The limiting shaft 54 ​​abuts against the inner wall of the first clamping groove 551.

[0032] When the side of the rotating magnetic block 53 facing the magnetic attraction plate 4 has the same polarity as the magnetic attraction plate 4, the limiting shaft 54 ​​is located in the first limiting groove 221, and the inner wall of the side of the first clamping groove 551 facing the magnetic attraction plate 4 abuts against the limiting shaft 54, thereby limiting the rotating magnetic block 53, so that the rotating magnetic block 53 continues to produce a repulsive force on the magnetic attraction plate 4, and the contact body 3 continues to clamp the lock cylinder 2 under the force of the magnetic attraction plate 4; when the side of the rotating magnetic block 53 facing the magnetic attraction plate 4 has an opposite polarity to the magnetic attraction plate 4, the limiting shaft 54 ​​is located in the second limiting groove 221, and the inner wall of the side of the second clamping groove 552 facing away from the magnetic attraction plate 4 abuts against the limiting shaft 54, thereby limiting the rotating magnetic block 53, so that the rotating magnetic block 53 continues to produce an attractive force on the magnetic attraction plate 4, and the contact body 3 moves away from the lock cylinder 2 under the force of the magnetic attraction plate 4.

[0033] In addition, frequent collisions between the rotating magnetic block 53 and the limiting shaft 54 ​​may change the microstructure inside the rotating magnetic block 53, resulting in weakening of the magnetism. When the rotating magnetic block 53 collides with the limiting shaft 54, the elastic protective cover 55 has a certain buffering effect on the rotating magnetic block 53, thereby reducing the risk of weakening of the magnetism of the rotating magnetic block 53 to a certain extent.

[0034] Reference Figure 3 , limit blocks 56 are respectively provided on both sides of the contact body 3, the limit blocks 56 are connected to the inner wall of the shell 1, and a slide groove 561 matching the contact body 3 is opened on the outer wall of the limit block 56 facing the contact body 3, and the opening direction of the slide groove 561 is parallel to the sliding direction of the contact body 3; a baffle 6 is provided between the magnetic attraction component 5 and the magnetic attraction sheet 4, the baffle 6 is connected to the inner wall of the shell and the plane where the baffle 6 is located is parallel to the plane where the magnetic attraction sheet 4 is located.

[0035] When the contact body 3 slides, the limit block 56 limits the contact body 3 through the slide groove 561, so that the contact body 3 is more stable during the sliding process; when the contact body 3 moves in the direction away from the lock cylinder 2 under the action of the magnetic attraction component 5, the baffle 6 limits the magnetic attraction plate 4, making it difficult for the magnetic attraction plate 4 to be adsorbed on the surface of the rotating magnetic block 53, thereby reducing the interference of the magnetic attraction plate 4 on the rotating magnetic block 53 when the rotating magnetic block 53 rotates.

[0036] The implementation principle of the sliding limit contact structure of an industrial safety lock in the embodiment of the present application is as follows: when the lock body is locked, the power is turned on to make the polarity of the electromagnet 51 the same as the polarity of the magnetic sheet 4. At this time, the rotating magnetic block 53 rotates around the rotating shaft 52 under the action of the electromagnet 51, and the side of the rotating magnetic block 53 with the same polarity as the electromagnet 51 faces the magnetic sheet 4, and then the magnetic sheet 4 is moved towards the direction close to the lock core 2 under the action of the rotating magnetic block 53, until the contact body 3 abuts against the inner wall of the limit groove 221, and the contact body 3 is engaged with the lock core 2 to lock the lock body; When opening the lock body, turn on the power supply and change the direction of the current so that the polarity of the electromagnet 51 is opposite to the polarity of the magnetic attraction plate 4. At this time, the rotating magnetic block 53 rotates around the rotating shaft 52 under the action of the electromagnet 51, and the side of the rotating magnetic block 53 with the same magnetic properties as the electromagnet 51 faces the magnetic attraction plate 4 until the contact body 3 is disengaged from the limiting groove 221, and the contact body 3 and the lock core 2 are separated; the state of the lock body is changed through the interaction between the magnetic attraction plate 4 and the electromagnet 51, thereby reducing the use of deformable parts such as springs, thereby reducing the frequency of lock body maintenance or replacement of parts to a certain extent.

[0037] The present application also discloses a method for manufacturing a sliding limit contact structure of an industrial safety lock. Figure 1 and Figure 3 , a method for manufacturing a sliding limit contact structure of an industrial safety lock, comprising the following steps: S1. Use metal material to make the contact body 3, connect the contact body 3 with the magnetic sheet 4 and put it into the housing 1; S2. Assemble the magnetic component 5 and place it into the housing 1 on the side away from the contact body 3; S3. Connect the electromagnet 51 to a power source; S4. Turn on the power to test the functionality of the structure.

[0038] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sliding limit contact structure for an industrial safety lock, characterized in that: The invention comprises a housing (1) and a remote control device (7); a contact body (3) for engaging with a lock cylinder (2) is slidably connected to the inner wall of the housing (1); the contact body (3) is engaged with and separated from the lock cylinder (2) during the sliding process; a magnetic attraction sheet (4) is connected to the side of the contact body (3) facing away from the lock cylinder (2); a magnetic attraction component (5) is provided on the side of the magnetic attraction sheet (4) facing away from the contact body (3); the magnetic attraction component (5) comprises an electromagnet (51) and the electromagnet (51) is connected to the inner wall of the housing (1); a power interface (11) connected to the outer wall of the housing (1) is provided on the inner wall of the housing (1) facing the electromagnet (51); a controller (12) for controlling the on and off of the power supply is also provided in the housing (1); the controller (12) is electrically connected to the remote control device (7).

2. The sliding limit contact structure of the industrial safety lock according to claim 1 is characterized in that: The magnetic attraction component (5) further comprises a rotating shaft (52) located between the electromagnet (51) and the magnetic attraction sheet (4); the extending direction of the rotating shaft (52) is parallel to the plane where the magnetic attraction sheet (4) is located; both ends of the rotating shaft (52) are connected to the inner wall of the housing (1); a rotating magnetic block (53) is sleeved on the outer wall of the rotating shaft (52); when the rotating magnetic block (53) is stationary, the plane where the rotating magnetic block (53) displays polarity is parallel to the plane where the magnetic attraction sheet (4) is located.

3. The sliding limit contact structure of the industrial safety lock according to claim 2 is characterized in that: The inner wall of the housing (1) is connected to a limit shaft (54); the magnetic attraction sheet (4) is located at one end of the rotating magnetic block (53) close to the limit shaft (54); the electromagnet (51) comprises a first electromagnet (511) and a second electromagnet (512); the first electromagnet (511) is located at one end of the rotating magnetic block (53) close to the limit shaft (54); the second electromagnet (512) is located at one end of the rotating magnetic block (53) away from the limit shaft (54); when the rotating magnetic block (53) is stationary, the limit shaft (54) abuts against one side of the rotating magnetic block (53).

4. The sliding limit contact structure of the industrial safety lock according to claim 3 is characterized in that: An elastic protective sleeve (55) is provided around the rotating magnetic block (53); when the rotating magnetic block (53) is stationary, the elastic protective sleeve (55) abuts against one side of the rotating magnetic block (53).

5. The sliding limit contact structure of the industrial safety lock according to claim 4 is characterized in that: A first clamping groove (551) is provided on a side of the elastic protective sleeve (55) facing the electromagnet (51); the extension direction of the first clamping groove (551) is perpendicular to the extension direction of the rotating shaft (52); the first clamping groove (551) is connected to an outer wall of a side of the elastic protective sleeve (55) facing the limiting shaft (54); the limiting shaft (54) abuts against an inner wall of the first clamping groove (551).

6. The sliding limit contact structure of the industrial safety lock according to claim 5, characterized in that: A second clamping groove (552) is also provided on a side of the elastic protective sleeve (55) facing the electromagnet (51); the extension direction of the second clamping groove (552) is perpendicular to the extension direction of the rotating shaft (52); and the second clamping groove (552) is connected to an outer wall of the elastic protective sleeve (55) on a side facing away from the limiting shaft (54).

7. The sliding limit contact structure of the industrial safety lock according to claim 1, characterized in that: The lock core (2) comprises a key core (21), a rotating disk (22) is sleeved on the outer wall of the key core (21), a limiting groove (221) is provided on a side of the rotating disk (22) facing the contact body (3), the extending direction of the limiting groove (221) is parallel to the sliding direction of the contact body (3), and the contact body (3) is slidably connected to the lock core (2) via the limiting groove (221).

8. The sliding limit contact structure of the industrial safety lock according to claim 1, characterized in that: A blocking piece (6) is provided between the magnetic attraction component (5) and the magnetic attraction piece (4), and the blocking piece (6) is connected to the inner wall of the shell.

9. The sliding limit contact structure of the industrial safety lock according to claim 1, characterized in that: Limit blocks (56) are respectively provided on both sides of the contact body (3), the limit blocks (56) are connected to the inner wall of the housing (1), and a slide groove (561) matching the contact body (3) is provided on the outer wall of one side of the limit block (56) facing the contact body (3), and the opening direction of the slide groove (561) is parallel to the sliding direction of the contact body (3).

10. A method for manufacturing a sliding limit contact structure of an industrial safety lock, based on the sliding limit contact structure of an industrial safety lock according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The contact body (3) is made of metal material, and the contact body (3) is connected to the magnetic sheet (4) and then placed inside the housing (1); S2. Assemble the magnetic attraction assembly (5) and place it into the housing (1) on the side away from the contact body (3); S3. Connecting the electromagnet (51) to a power source; S4. Turn on the power to test the functionality of the structure.

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