Coupling with Magnetic Adsorption and Usage Method

Abstract

The present invention belongs to the technical field of engineering components, specifically relates to couplings, and particularly to a coupling with magnetic adsorption and its usage method; the present invention provides a coupling with magnetic adsorption, comprising: a coupling body, which is respectively sleeved on the outer walls of two transmission shafts at both ends and is made of non-magnetic material; a bolt rod, which is threadedly connected to the coupling body and is made of magnetic material; at least two magnetic members, which are arranged inside the coupling body, and the two magnetic members are oppositely arranged on both sides of a threaded hole adapted to the bolt rod to generate a coupling magnetic field for adsorbing and locking the bolt rod passing through the threaded hole; a plurality of decoupling grooves are arranged on the coupling body and are respectively located between the threaded hole and the magnetic member. When a magnetic field shielding member is inserted into the decoupling groove to shield the coupling magnetic field, the bolt rod is unlocked; through the cooperation of the magnetic member, the magnetic field shielding member and the bolt rod, during assembly, the magnetic member magnetically adsorbs the bolt rod, improving the fastening effect of the bolt rod on the coupling body.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering components, and particularly relates to a coupling, and more particularly to a coupling with magnetic adsorption and a using method thereof. Background Art

[0002] A coupling refers to a device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected machine parts from bearing excessive loads and play an overload protection role.

[0003] In the related art, bolts are mostly used to fasten the coupling. In order to prevent the bolts from loosening when the coupling rotates, glue is mostly applied to the outer wall of the bolts during assembly to improve the fixing stability of the bolts and the coupling. However, after applying the glue, it is not easy to disassemble the bolts from the coupling when disassembling the coupling.

[0004] Therefore, how to solve the inconvenience of disassembling the existing bolts from the coupling is a technical problem that needs to be urgently solved in this field.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a coupling with magnetic adsorption and its working method.

[0007] In a first aspect, the embodiments of the present disclosure provide a coupling with magnetic adsorption, including:

[0008] A coupling body, the two ends of which are respectively sleeved on the outer walls of two transmission shafts and are made of non-magnetic materials;

[0009] A bolt rod, which is threadedly connected to the coupling body and is made of magnetic materials;

[0010] At least two magnetic members, which are arranged in the coupling body, and the two magnetic members are oppositely arranged on both sides of a threaded hole adapted to the bolt rod to generate a coupling magnetic field for adsorbing and locking the bolt rod passing through the threaded hole;

[0011] A plurality of decoupling grooves are arranged on the coupling body and are respectively located between the threaded hole and the magnetic members. When a magnetic field shielding member is inserted into the decoupling grooves to shield the coupling magnetic field, the bolt rod is unlocked.

[0012] In an optional embodiment, the coupling body is provided with a tightening groove along the radial direction to facilitate the coupling body to be sleeved on the outer wall of the transmission shaft;

[0013] The threaded hole is arranged along the radial direction of the coupling body, and the threaded hole is perpendicular to the tightening groove;

[0014] Among them, the bolt rod is spirally inserted into the threaded hole to fix the device body on the outer wall of the transmission shaft.

[0015] In an alternative embodiment, receiving cavities are respectively formed on both sides of the threaded hole, and the receiving cavities are parallel to the threaded hole;

[0016] A magnetic member is correspondingly arranged in one receiving cavity, and the magnetic member is parallel to the bolt rod.

[0017] In an alternative embodiment, a decoupling groove is arranged between the receiving cavity and the threaded hole, the decoupling groove extends along the radial direction of the device body, and the magnetic field shielding member is adapted to be inserted into the decoupling groove;

[0018] Among them, when the magnetic field shielding member is inserted into the decoupling groove, the magnetic field shielding member is adapted to isolate the magnetic suction force of the magnetic member on the bolt rod.

[0019] In an alternative embodiment, an air duct is formed in the device body, and the air duct is adapted to communicate the tightening groove with the receiving cavity;

[0020] Among them, when the device body rotates, the air duct is adapted to guide the air flow at the end of the device body to the magnetic member.

[0021] In an alternative embodiment, the magnetic field shielding member includes: a separator, which is in a "U" shape and is adapted to be inserted into the decoupling groove;

[0022] A positioning piece, which is arranged on the side wall of the separator and is adapted to be inserted into the tightening groove.

[0023] In an alternative embodiment, there are two device bodies, and a diaphragm group is arranged between the two device bodies;

[0024] The tightening grooves of the two device bodies are perpendicular to each other.

[0025] In an alternative embodiment, one end of the tightening groove penetrates through the outer wall of the device body, and the other end of the tightening groove is arranged to extend beyond the transmission shaft.

[0026] In a second aspect, the embodiments of the present disclosure further provide a magnetic locking mechanism for a coupling, including:

[0027] A magnetic field shielding member, which is detachably arranged on the coupling and is magnetically adapted to the magnetic member in the coupling;

[0028] The magnetic field shielding member is made of a magnetic material;

[0029] A bolt rod, which is threadedly connected to the coupling and is made of a magnetic material;

[0030] When the bolt rod is spirally inserted into the coupling, the two magnetic members are adapted to magnetically limit the bolt rod from both sides;

[0031] The magnetic field shielding member is inserted into the decoupling groove on the coupling, and the magnetic field shielding member is adapted to isolate the magnetic suction force of the magnetic member on the bolt rod.

[0032] In an alternative embodiment,

[0033] The magnetic field shielding member includes: a separator, which is in a "U" shape and is adapted to be inserted into the decoupling groove;

[0034] A positioning piece is arranged on the side wall of the separator, and the positioning piece is adapted to be inserted into the tightening groove.

[0035] In an alternative embodiment,

[0036] An air passage is formed in the body of the device, and the air passage is adapted to communicate the tightening groove with the accommodating cavity;

[0037] Wherein, when the body of the device rotates, the air passage is adapted to guide the air flow at the end of the body of the device to the magnetic member.

[0038] In a third aspect, an embodiment of the present disclosure further provides a method for using a coupling, and the method for using includes:

[0039] During assembly, both ends of the body of the device are respectively sleeved on the outer walls of the two transmission shafts, the bolt rod is spirally inserted into the body of the device, and the two magnetic members are adapted to magnetically limit the bolt rod from both sides; so as to improve the connection stability between the bolt rod and the body of the device;

[0040] During disassembly, the magnetic field shielding member is inserted into the body of the device to isolate the magnetic suction force of the magnetic member on the bolt rod, and the bolt rod is rotated to disengage it from the body of the device.

[0041] The beneficial effect of the present invention is that the coupling with magnetic adsorption and the using method thereof of the present invention, through the arrangement of the magnetic member, the bolt rod and the magnetic field shielding member, when assembling and fastening, the magnetic member magnetically adsorbs the bolt rod from both sides, so as to improve the fastening stability between the bolt rod and the body of the device and avoid the bolt rod from disengaging from the body of the device; while during disassembly, the magnetic field shielding member is inserted into the outer wall of the body of the device to isolate the magnetic force of the magnetic member on the bolt rod, so as to facilitate the disassembly of the bolt rod.

[0042] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification, the claims and the drawings.

[0043] To make the above objects, features, and advantages of the present invention more obvious and understandable, preferred embodiments are specifically exemplified herein and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0044] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0045] Figure 1 A perspective view of the coupling with magnetic adsorption provided by an embodiment of the present disclosure;

[0046] Figure 2 A schematic diagram of the unfolded state of the bolt rod and the magnetic field shielding member provided by an embodiment of the present disclosure;

[0047] Figure 3 A perspective view of the internal cross-section of the device body provided by an embodiment of the present disclosure.

[0048] In the figures:

[0049] 1. Device body; 10. Tightening groove; 11. Threaded hole; 12. Decoupling groove; 13. Air passage; 2. Bolt rod; 3. Magnetic member; 4. Magnetic field shielding member; 41. Isolation member; 42. Positioning piece; 5. Diaphragm group. Detailed Embodiments

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0051] In this document, when it is mentioned that the first component is located on the second component, this may mean that the first component can be directly formed on the second component, or a third component can be inserted between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0052] In this document, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0053] The terms used herein are only for describing specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an", and "the" may also be intended to include the plural forms, unless it is clearly stated otherwise in the context. The terms "comprising", "including", and "having" are inclusive, and thus specify the presence of the specified features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an order of execution. Additional or alternative steps may be employed.

[0054] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific feature, structure, or characteristic after the phrase may be included in at least one embodiment of the present disclosure. Thus, a specific feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example", "exemplary", etc. are used "as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of the terms "example", "exemplary", etc. is intended to present concepts in a specific manner.

[0055] It has been found through research that the disadvantages of the prior art are as follows: In the related art, a coupling is mostly fastened by bolts. In order to prevent the bolts from loosening when the coupling rotates, glue is mostly applied to the outer wall of the bolts during assembly to improve the stability of the fixation of the bolts and the coupling. However, after applying the glue, it is not easy to disassemble the bolts from the coupling when disassembling the coupling.

[0056] Therefore, how to solve the problem of inconvenient disassembly of existing bolts from the coupling is a technical problem that urgently needs to be solved in the art.

[0057] The defects existing in the above solutions are all the results obtained by the inventor through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure in this article for the above problems should both be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0058] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0060] As Figures 1 to 3 shown, some embodiments provide a coupling with magnetic adsorption, including: a device body 1, the two ends of which are respectively sleeved on the outer walls of two transmission shafts and are made of non-magnetic materials; preferably, the device body 1 is made of aluminum alloy, and a fixing hole is opened at the axis of the device body 1, and the transmission shaft is adapted to be inserted into the fixing hole. A bolt rod 2, which is threadedly connected to the device body 1 and is made of magnetic material; the bolt rod 2 is threadedly adapted to the device body 1. After the transmission shaft is inserted into the device body 1, the threaded rod is threadedly inserted into the device body 1 to fixedly connect the transmission shaft. At least two magnetic members 3, which are arranged in the device body 1, and the two magnetic members 3 are oppositely arranged on both sides of the threaded hole 11 adapted to the bolt rod 2; to generate a coupling magnetic field for adsorbing and locking the bolt rod 2 passing through the threaded hole 11; a plurality of decoupling grooves 12 are arranged on the device body 1 and are respectively located between the threaded hole 11 and the magnetic member 3. When the magnetic field shielding member 4 is inserted into the decoupling groove 12, the coupling magnetic field is shielded to unlock the bolt rod 2. When the device body 1 connects and fixes the two transmission shafts, the magnetic field shielding member 4 is not inserted into the device body 1. When it is necessary to disassemble the bolt rod 2, the magnetic field shielding member 4 is inserted into the device body 1. Through the arrangement of the magnetic member 3, the bolt rod 2 and the magnetic field shielding member 4, during assembly and fastening, the magnetic member 3 magnetically adsorbs the bolt rod 2 from both sides, so as to improve the fastening stability between the bolt rod 2 and the device body 1 and prevent the bolt rod 2 from detaching from the device body 1; during disassembly, the magnetic field shielding member 4 is inserted into the outer wall of the device body 1 to isolate the magnetic force of the magnetic member 3 on the bolt rod 2, so as to facilitate the disassembly of the bolt rod 2. And the setting of the air duct 13 can also supply air to cool the magnetic member 3, avoiding the situation that the magnetic property of the magnetic member 3 decreases due to temperature rise.

[0061] Refer to the attached Figure 2, a tightening groove 10 is radially formed in the device body 1 to facilitate the sleeving of the device body 1 on the outer wall of the transmission shaft; one end of the tightening groove 10 penetrates through the outer wall of the device body 1, and the other end of the tightening groove 10 is arranged to extend beyond the transmission shaft. The tightening groove 10 is provided to facilitate the insertion of the transmission shaft into the fixing hole in the device body 1; after the bolt rod 2 is inserted into the threaded hole 11, it is suitable for tightening the device body 1 so that the fixing between the device body 1 and the transmission shaft is more firm. The threaded hole 11 is arranged along the radial direction of the device body 1, and the threaded hole 11 is perpendicular to the tightening groove 10; wherein, the bolt rod 2 is spirally inserted into the threaded hole 11 to fix the device body 1 on the outer wall of the transmission shaft.

[0062] Reference appendix Figure 3 , accommodating cavities are respectively formed on both sides of the threaded hole 11, and the accommodating cavities are parallel to the threaded hole 11; a magnetic part 3 is correspondingly arranged in one accommodating cavity, and the magnetic part 3 is parallel to the bolt rod 2. A gap is provided between the magnetic part 3 and the threaded hole 11 to facilitate the insertion of the spacer 41 between the threaded hole 11 and the magnetic part 3. The magnetic part 3 is a strong magnet. After the bolt rod 2 is screwed and fastened to the device body 1, the two magnetic parts 3 respectively perform magnetic limiting on the bolt rod 2 from both sides. On the one hand, it can prevent the bolt rod 2 from rotating, and at the same time, it also avoids the outward movement of the bolt rod 2, improving the stability of the fixation between the bolt rod 2 and the device body 1.

[0063] Furthermore, a decoupling groove 12 is arranged between the accommodating cavity and the threaded hole 11, the decoupling groove 12 extends along the radial direction of the device body 1, and the magnetic field shielding part 4 is suitable for being inserted into the decoupling groove 12; the decoupling groove 12 is arranged between the magnetic part 3 and the threaded hole 11. Wherein, when the magnetic field shielding part 4 is inserted into the decoupling groove 12, the magnetic field shielding part 4 is suitable for isolating the magnetic suction force of the magnetic part 3 on the bolt rod 2.

[0064] Reference appendix Figure 3 , an air duct 13 is formed in the device body 1, and the air duct 13 is suitable for communicating the tightening groove 10 and the accommodating cavity; the air inlet of the air duct 13 is located below the transmission shaft, and the air outlet of the air duct 13 is located above the transmission shaft. When the transmission shaft drives the device body 1 to rotate circumferentially, the air at the end of the device body 1 flows into the air inlet of the air duct 13 along the tightening groove 10, and the air flows in the air duct 13 and blows towards the magnetic part 3 to cool it down, avoiding the situation that the magnetic property of the magnetic part 3 decreases due to the increase of temperature. Wherein, when the device body 1 rotates, the air duct 13 is suitable for guiding the air at the end of the device body 1 to flow towards the magnetic part 3.

[0065] Reference appendix Figure 2, the magnetic field shielding member 4 includes: a separator 41, which is in a "U" shape and is adapted to be inserted into the decoupling groove 12; a positioning piece 42, which is arranged on the side wall of the separator 41 and is adapted to be inserted into the tightening groove 10. The separator 41 is adapted to be inserted into the decoupling groove 12 to isolate the magnetic force of the magnetic member 3 on the bolt rod 2. Further, the separator 41 is made of iron.

[0066] Further, there are two of the device bodies 1, and a diaphragm group 5 is arranged between the two device bodies 1; the tightening grooves 10 of the two device bodies 1 are arranged perpendicular to each other.

[0067] Some embodiments provide a magnetic locking mechanism for a coupling, including:

[0068] A magnetic field shielding member 4, which is detachably arranged on the coupling and is magnetically adapted to the magnetic member 3 in the coupling;

[0069] The magnetic field shielding member 4 is made of a magnetic material;

[0070] A bolt rod 2, which is threadedly connected to the coupling and is made of a magnetic material;

[0071] Wherein, when the bolt rod 2 is spirally inserted into the coupling, the two magnetic members 3 are adapted to magnetically limit the bolt rod 2 from both sides;

[0072] The magnetic field shielding member 4 is inserted into the decoupling groove 12 on the coupling, and the magnetic field shielding member 4 is adapted to isolate the magnetic suction force of the magnetic member 3 on the bolt rod 2.

[0073] Further, the magnetic field shielding member 4 includes: a separator 41, which is in a "U" shape and is adapted to be inserted into the decoupling groove 12;

[0074] A positioning piece 42, which is arranged on the side wall of the separator 41 and is adapted to be inserted into the tightening groove 10.

[0075] Further, an air passage 13 is opened in the device body 1, and the air passage 13 is adapted to communicate the tightening groove 10 with the accommodation cavity;

[0076] Wherein, when the device body 1 rotates, the air passage 13 is adapted to guide the air flow at the end of the device body 1 to the magnetic member 3.

[0077] Some embodiments provide a method for using a coupling, and the method for using includes:

[0078] During assembly, both ends of the device body 1 are respectively sleeved on the outer walls of the two transmission shafts, the bolt rod 2 is spirally inserted into the device body 1, and the two magnetic members 3 are adapted to magnetically limit the bolt rod 2 from both sides; to improve the connection stability between the bolt rod 2 and the device body 1;

[0079] During disassembly, insert the magnetic field shielding member 4 into the inserter body 1 to isolate the magnetic attraction of the magnetic member 3 on the bolt rod 2, and rotate the bolt rod 2 to disengage it from the inserter body 1.

[0080] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" shall be understood in a broad sense. For example, they may be fixedly connected, detachably connected or integrally connected; they may be mechanically connected or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0081] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless clearly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0082] Taking the above ideal embodiments of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A coupling with magnetic adsorption, characterized in that: include: The device body (1) has two ends respectively sleeved on the outer walls of the two transmission shafts and is made of non-magnetic material; A bolt rod (2) which is threadedly connected to the device body (1) and is made of magnetic material; At least two magnetic members (3) are arranged in the device body (1), and the two magnetic members (3) are arranged oppositely on two sides of a threaded hole (11) adapted to the bolt rod (2), so as to generate a coupling magnetic field for adsorbing and locking the bolt rod (2) passing through the threaded hole (11); A plurality of decoupling grooves (12) are provided on the device body (1) and are respectively located between the threaded hole (11) and the magnetic member (3); when the magnetic field shielding member (4) is inserted into the decoupling groove (12), the coupling magnetic field is shielded, so that the bolt rod (2) is unlocked; The device body (1) is provided with a tightening groove (10) along the radial direction, so as to facilitate the device body (1) to be sleeved on the outer wall of the transmission shaft; The magnetic field shielding member (4) comprises: an isolating member (41) which is in a "U" shape, and the isolating member (41) is suitable for being inserted into the decoupling slot (12); A positioning piece (42) is arranged on a side wall of the isolation piece (41), and the positioning piece (42) is suitable for being inserted into the tightening groove (10).

2. The coupling with magnetic adsorption according to claim 1, characterized in that: The threaded hole (11) is arranged along the radial direction of the device body (1), and the threaded hole (11) and the tightening groove (10) are perpendicular to each other; The bolt rod (2) is screwed into the threaded hole (11) to fix the device body (1) to the outer wall of the transmission shaft.

3. The coupling with magnetic adsorption as claimed in claim 2, characterized in that: A receiving cavity is respectively provided on both sides of the threaded hole (11), and the receiving cavity and the threaded hole (11) are parallel to each other; A magnetic component (3) is correspondingly arranged in a receiving cavity, and the magnetic component (3) and the bolt rod (2) are parallel to each other.

4. The coupling with magnetic adsorption as claimed in claim 3, characterized in that: The decoupling groove (12) extends radially along the device body (1), and the magnetic field shielding member (4) is suitable for being inserted into the decoupling groove (12); The magnetic field shielding member (4) is inserted into the decoupling groove (12), and the magnetic field shielding member (4) is suitable for isolating the magnetic attraction of the magnetic member (3) on the bolt rod (2).

5. The coupling with magnetic adsorption as claimed in claim 3, characterized in that: An air passage (13) is provided in the device body (1), and the air passage (13) is suitable for connecting the tightening groove (10) and the accommodating cavity; When the device body (1) rotates, the air passage (13) is suitable for guiding the air at the end of the device body (1) to flow toward the magnetic member (3).

6. The coupling with magnetic adsorption as claimed in claim 2, characterized in that: There are two device bodies (1), and a diaphragm group (5) is arranged between the two device bodies (1); The tightening grooves (10) of the two device bodies (1) are arranged perpendicular to each other.

7. The coupling with magnetic adsorption as claimed in claim 2, characterized in that: One end of the tightening groove (10) passes through the outer wall of the device body (1), and the other end of the tightening groove (10) is arranged to extend beyond the transmission shaft.

8. A magnetic locking mechanism for a coupling, characterized in that: include: A magnetic field shielding member (4) which is detachably mounted on the coupling and is magnetically compatible with the magnetic member (3) in the coupling; The magnetic field shielding element (4) is made of magnetic material; A bolt rod (2) which is threadedly connected to the coupling and is made of magnetic material; Wherein, when the bolt rod (2) is spirally inserted into the coupling, the two magnetic members (3) are suitable for magnetically limiting the bolt rod (2) from both sides; The magnetic field shielding member (4) is inserted into the decoupling groove (12) on the coupling, and the magnetic field shielding member (4) is suitable for isolating the magnetic attraction of the magnetic member (3) on the bolt rod (2).

9. The magnetic locking mechanism for a coupling according to claim 8, characterized in that: The magnetic field shielding member (4) comprises: an isolating member (41) which is in a "U" shape, and the isolating member (41) is suitable for being inserted into the decoupling slot (12); A positioning piece (42) is arranged on a side wall of the isolation piece (41), and the positioning piece (42) is suitable for being inserted into the tightening groove (10).

10. The magnetic locking mechanism for a coupling according to claim 9, characterized in that: An air passage (13) is provided in the device body (1), and the air passage (13) is suitable for connecting the tightening groove (10) and the accommodating cavity; When the device body (1) rotates, the air passage (13) is suitable for guiding the air at the end of the device body (1) to flow toward the magnetic member (3).

11. A method for using a coupling, characterized in that: Using the coupling with magnetic adsorption as described in any one of claims 1 to 7, the method of using includes: During assembly, the two ends of the device body (1) are respectively sleeved on the outer walls of the two transmission shafts, the bolt rod (2) is spirally inserted into the device body (1), and the two magnetic members (3) are suitable for magnetically limiting the bolt rod (2) from both sides, so as to improve the stability of the connection between the bolt rod (2) and the device body (1); During disassembly, the magnetic field shielding member (4) is inserted into the device body (1) to isolate the magnetic attraction of the magnetic member (3) on the bolt rod (2), and the bolt rod (2) is rotated to separate it from the device body (1).

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