Self-locking structure triggered by magnetic force

Abstract

The utility model discloses a self-locking structure triggered by magnetic force, which relates to the technical field of mechanical locking and comprises a locking unit and a triggering unit. A locking groove with magnetism is formed in one side of the locking unit, a locking assembly with magnetism matched with the locking groove is arranged in the triggering unit in a sliding mode, and an unlocking assembly with magnetism matched with the locking assembly is arranged in the triggering unit in a sliding mode. According to the utility model, the design is reasonable, the magnetic trigger technology can significantly reduce physical wear in the operation process, and the durability of the assembly is improved; meanwhile, due to the characteristics of the magnetic element, the locking mechanism can complete actions in a shorter time, and the use efficiency is improved; in addition, due to the fact that the triggering unit and the locking unit can achieve non-contact operation, abrasion is reduced, and the failure risk caused by long-term use is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical locking, and more specifically to the technical field of a magnetically triggered self-locking structure, which is widely used in the fields of door locks, furniture, industrial equipment, etc. Background Art

[0002] Traditional mechanical locking mechanisms often rely on physical contact or complex mechanical components. Existing patents disclose the following technologies:

[0003] The patent, with publication number CN102434035B and titled "A Mechanical Locking Device," discloses the following: a locking bracket, a rocker arm connected to the locking bracket, and a door leaf bracket cooperating with the rocker arm. The locking bracket includes a base plate, a hinge seat provided on the base plate, and a door-shaped limit frame. The door leaf bracket includes a door leaf connecting plate and a rocker arm positioning bracket provided on the door leaf connecting plate. The rocker arm is hingedly connected to the hinge seat via a rocker arm shaft and is circumferentially fixed to the rocker arm shaft. The outer end of the rocker arm is located within the door-shaped limit frame, and the upper side of the outer end of the rocker arm is provided with an outer end upper side surface corresponding to the crossbeam of the door-shaped limit frame. The inner end of the rocker arm is provided with an inner end upper side surface corresponding to the rocker arm positioning bracket. A forward and reverse motor is fixedly connected to the base plate, and the output end of the forward and reverse motor is connected to the rocker arm shaft via a gear transmission mechanism. This device is safe and reliable, with a simple structure, and effectively solves the installation and debugging difficulties of mechanical locking, as well as the problem of frequent jamming of traditional door leaf locking devices.

[0004] The aforementioned patents and traditional mechanical locking mechanisms often rely on physical contact or complex mechanical components, resulting in inconvenient operation, prone to wear and tear, and insufficient safety. With technological advancements, the demand is shifting towards convenient, safe, and efficient locking mechanisms. The emergence of magnetic trigger technology offers new ideas for self-locking structures, enabling fast and reliable locking and unlocking. Utility Model Content

[0005] This utility model aims to address the technical problems of traditional mechanical locking mechanisms, which often rely on physical contact or complex mechanical components, resulting in inconvenient operation, prone to wear and tear, and insufficient safety. This utility model provides a magnetically triggered self-locking mechanism. This mechanism achieves self-locking and unlocking functions by varying the distance between three magnetic elements with the same magnetic orientation, ensuring convenient and safe operation. This structure also reduces physical contact and friction, minimizing component wear and extending service life.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] The utility model provides a magnetically triggered self-locking structure, comprising a locking unit and a trigger unit; a locking groove with a magnet is provided on one side of the locking unit, a locking component with a magnet that cooperates with the locking groove is slidably provided in the trigger unit, and a unlocking component with a magnet that cooperates with the locking component is slidably provided in the trigger unit.

[0008] Specifically, after the locking unit and the trigger unit are combined, the locking groove formed by the locking unit matches the size and shape of the sliding portion of the locking assembly in the trigger unit, thereby realizing an effective self-locking mechanism.

[0009] In one embodiment, the locking unit includes a locking unit upper housing, a first magnetic element, and a locking unit lower housing;

[0010] The upper surface of the lower shell of the locking unit is recessed inward to form a groove for installing the first magnetic element. The upper shell of the locking unit is arranged at the groove opening on the upper surface of the lower shell of the locking unit in a sealing form. The locking groove is located on the lower surface of the lower shell of the locking unit and passes through the groove.

[0011] Specifically, the first magnetic element is located in a groove inside the lower housing of the locking unit, ensuring its stable fixation. The upper housing of the locking unit is responsible for fixing and sealing the first magnetic element to protect it from external influences, thereby ensuring the overall functionality and reliability of the locking unit.

[0012] In one embodiment, the lower shell of the locking unit is a cylindrical structure, the locking groove is a circular groove axially extending through the middle of the lower shell of the locking unit, the groove is a circular groove concentric with the locking groove, the groove is located at the top of the lower shell of the locking unit, the diameter of the groove is larger than the diameter of the locking groove, and the first magnetic element is an annular magnetic part, which is fixedly installed in the groove.

[0013] In one embodiment, the inner diameter of the first magnetic element is greater than or equal to the diameter of the locking groove.

[0014] In one embodiment, the trigger unit further comprises a trigger unit housing, the locking assembly is disposed at an upper end of the interior of the trigger unit housing, and the unlocking assembly is disposed at a lower end of the interior of the trigger unit housing, the locking assembly being an upper portion of the trigger unit and the unlocking assembly being a lower portion of the trigger unit;

[0015] A vertical mounting hole is provided inside the trigger unit housing, and an annular mounting platform is provided on the inner wall of the vertical mounting hole, which divides the vertical mounting hole into an upper mounting cavity and a lower mounting cavity;

[0016] The upper part of the trigger unit includes an upper plate of the trigger unit housing, a second magnetic element and a locking slider; the upper plate of the trigger unit housing is encapsulated on the top of the upper mounting cavity, and an upper sliding hole communicating with the interior of the upper mounting cavity is provided on the upper plate of the trigger unit housing; the second magnetic element is integrated on the locking slider, and the two are slidably arranged in the upper mounting cavity, and the locking slider partially slides out of the upper sliding hole and cooperates with the locking groove.

[0017] The lower portion of the trigger unit includes a third magnetic element, an elastic recovery component, a pressing component, and a lower plate of the trigger unit housing; the lower plate of the trigger unit housing is encapsulated at the bottom of the lower mounting cavity, and a lower sliding hole communicating with the interior of the lower mounting cavity is provided on the lower plate of the trigger unit housing; the third magnetic element is integrated on the pressing component, and the two are slidably arranged in the lower mounting cavity, the pressing component partially slides out of the lower sliding hole, the elastic recovery component is located in the lower mounting cavity, and one end of the elastic recovery component is fixed to the inner wall of the lower mounting cavity, and the other end is fixed to the pressing component;

[0018] The first magnetic element, the second magnetic element and the third magnetic element have the same magnetic direction.

[0019] Specifically, the second magnetic element is fixed to the locking slider and moves with it. A slot is provided within the trigger unit housing to guide the up and down movement of the locking slider and the second magnetic element, achieving effective locking and unlocking. Furthermore, a stopper is provided at the bottom of the slot to limit the range of motion of the locking slider and the second magnetic element.

[0020] The trigger unit housing has a structure inside which a pressing member passes, enabling effective coordination between the pressing operation and the elastic recovery assembly. The pressing member also has a structure for securing the third magnetic element and is capable of moving up and down within the trigger unit housing.

[0021] The third magnetic element is fixed to the pressing component and installed through the bottom of the trigger unit housing, working in conjunction with the elastic recovery assembly. The lower plate of the trigger unit housing is used to seal and secure the pressing component, ensuring it remains stable during movement and prevents it from falling out.

[0022] The second magnetic element and the third magnetic element have the same magnetic direction and attract each other, so that the locking slider and the pressing component remain stationary.

[0023] In one embodiment, the elastic recovery component is a spring arranged in the lower mounting cavity in a compressed state, one end of the spring is fixed to the inner wall of the lower mounting cavity, and the other end is fixed to the pressing component.

[0024] Specifically, a compression space (lower mounting cavity) for spring compression is provided inside the trigger unit housing, and the spring is installed through the bottom of the trigger unit housing to provide the necessary support and rebound force for the pressing component.

[0025] In one embodiment, the locking slider includes a bottom disc located in the upper mounting cavity and a guide column fixed at the center of the bottom disc. The second magnetic element is an annular magnet that is sleeved on the outside of the guide column and fixed on the bottom disc. The diameter of the guide column is smaller than the diameter of the upper sliding hole. The guide column passes through the upper sliding hole and cooperates with the locking groove.

[0026] In one embodiment, the sum of the thicknesses of the bottom disk and the second magnetic element is smaller than the distance between the annular mounting platform and the upper plate of the trigger unit housing.

[0027] In one embodiment, the pressing component includes a central pressing column and a guide ring sleeved on the outside of the central pressing column through a connecting block, the central pressing column and the guide ring are concentrically arranged, the guide ring is slidably arranged in the lower mounting cavity, and the guide rings extend from both ends of the central pressing column;

[0028] The third magnetic element is fixedly sleeved on the central pressing post in the installation cavity; the lower end portion of the central pressing post extends to the outside of the lower sliding hole;

[0029] One end of the spring is fixed in the lower mounting cavity, and the other end is fixed on the guide ring.

[0030] In one embodiment, the sum of the axial thicknesses of the guide ring and the third magnetic element is smaller than the distance between the annular mounting platform and the lower plate of the trigger unit housing.

[0031] Working principle:

[0032] When the trigger unit approaches the locking unit, the locking slider and the second magnetic element on its upper portion are attracted to the first magnetic element in the locking unit, causing them to move toward the first magnetic element in the locking unit. During this process, the locking slider smoothly inserts into the locking slot in the trigger unit. The centers of the first and second magnetic elements are aligned and have the same magnetic direction, forming a stable attractive force. The attraction stops after reaching the locked position, ensuring a stable locking function.

[0033] When the push member is pressed, it compresses the spring, causing the third magnetic element on its upper portion to approach the second magnetic element on the locking slider. The third and second magnetic elements align in the same magnetic direction, attracting each other. As the distance between the third magnetic element and the second magnetic element decreases, the locking slider moves downward, unlocking the device.

[0034] Subsequently, the trigger unit is moved to separate it from the locking unit, completely disconnecting the two. When the external force is released, the elastic restoring force generated by the compression spring quickly resets the pressing component, and the second and third magnetic elements return to their initial positions.

[0035] The beneficial effects of the utility model are as follows:

[0036] 1. This utility model utilizes the interaction between magnetic components to achieve fast and reliable locking and unlocking, overcoming many of the drawbacks of traditional mechanical locking methods. Magnetic triggering technology significantly reduces physical wear during operation, improving component durability. Furthermore, due to the characteristics of the magnetic components, the locking mechanism can complete its operation in a shorter time, improving efficiency. Furthermore, the contactless operation of the trigger and locking units not only reduces wear but also mitigates the risk of failure due to long-term use.

[0037] 2. Mechanical wear is no longer the main factor affecting the self-locking structure. Its service life is mainly affected by magnetic attenuation. Taking the common neodymium iron boron magnet as an example, in the natural environment, the magnetic attenuation is slow, and this structure can still function.

[0038] 3. Magnetic trigger technology provides innovative ideas for the development of modern locking mechanisms, meeting users' growing demand for convenience, safety and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 It is a structural diagram of the utility model;

[0041] Figure 2 It is a rough exploded view of the present utility model;

[0042] Figure 3 yes Figure 2 Exploded image again;

[0043] Figure 4 It is an exploded view of the locking unit;

[0044] Figure 5 This is an exploded diagram of the upper part of the trigger unit and the spring;

[0045] Figure 6 This is a schematic diagram of the explosion at the bottom of the trigger unit;

[0046] Figure 7 is a schematic cross-sectional view of the trigger unit;

[0047] Figure 8 It is a structural diagram of the bottom of the trigger unit housing;

[0048] Figure 9This is a sectional view of the utility model in a separated state;

[0049] Figure 10 This is a cross-sectional view of the utility model in the unlocked state;

[0050] Figure 11 This is a cross-sectional view of the utility model in a locked state;

[0051] Reference numerals: 1 - locking unit, 2 - triggering unit;

[0052] 101-locking unit upper shell, 4-first magnetic element, 102-locking unit lower shell;

[0053] 201 - upper portion of the trigger unit, 202 - upper plate of the trigger unit housing, 203 - locking slider, 204 - trigger unit housing, 205 - spring, 301 - lower portion of the trigger unit, 302 - pressing component, 303 - lower plate of the trigger unit housing, 5 - second magnetic element, 6 - third magnetic element. DETAILED DESCRIPTION

[0054] To make the technical problems, technical solutions, and technical effects of the present invention more clear, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0056] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0057] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0058] Example 1

[0059] like Figures 1 to 11 As shown, this embodiment provides a magnetically triggered self-locking structure, including a locking unit 1 and a trigger unit 2; a magnetic locking groove is provided on one side of the locking unit 1, a magnetic locking component cooperating with the locking groove is slidably provided in the trigger unit 2, and a magnetic unlocking component cooperating with the locking component is slidably provided in the trigger unit 2.

[0060] Specifically, after the locking unit 1 and the trigger unit 2 are combined, the locking groove formed by the locking unit 1 matches the size and shape of the sliding portion of the locking assembly in the trigger unit 2, thereby realizing an effective self-locking mechanism.

[0061] Example 2

[0062] This embodiment is a further optimization based on the embodiment 1, specifically:

[0063] The locking unit 1 comprises a locking unit upper shell 101, a first magnetic element 4 and a locking unit lower shell 102;

[0064] The upper surface of the locking unit lower shell 102 is recessed inward to form a groove for installing the first magnetic element 4. The locking unit upper shell 101 is arranged at the groove opening on the upper surface of the locking unit lower shell 102 in a sealed form. The locking groove is located on the lower surface of the locking unit lower shell 102 and is connected to the groove.

[0065] Specifically, the first magnetic element 4 is located in a groove inside the locking unit lower housing 102 to ensure its stable fixation. The locking unit upper housing 101 is responsible for fixing and sealing the first magnetic element 4 to protect it from external influences, thereby ensuring the overall functionality and reliability of the locking unit 1.

[0066] Example 3

[0067] This embodiment is a further optimization based on the second embodiment, specifically:

[0068] The lower shell 102 of the locking unit is a cylindrical structure, and the locking groove is a circular groove that is axially penetrated in the middle of the lower shell 102 of the locking unit. The groove is a circular groove concentric with the locking groove. The groove is located at the top of the lower shell 102 of the locking unit. The diameter of the groove is larger than the diameter of the locking groove. The first magnetic element 4 is an annular magnetic part, and the first magnetic element 4 is fixedly installed in the groove.

[0069] The inner diameter of the first magnetic element 4 is greater than or equal to the diameter of the locking groove.

[0070] Example 4

[0071] This embodiment is a further optimization based on the embodiment 3, specifically:

[0072] The trigger unit 2 further includes a trigger unit housing 204, a locking assembly is disposed at the upper end of the trigger unit housing 204, and an unlocking assembly is disposed at the lower end of the trigger unit housing 204, the locking assembly being the trigger unit upper portion 201, and the unlocking assembly being the trigger unit lower portion 301;

[0073] A vertical mounting hole is provided inside the trigger unit housing 204, and an annular mounting platform is provided on the inner wall of the vertical mounting hole. The annular mounting platform divides the vertical mounting hole into an upper mounting cavity and a lower mounting cavity.

[0074] The upper part 201 of the trigger unit includes an upper plate 202 of the trigger unit housing, a second magnetic element 5 and a locking slider 203; the upper plate 202 of the trigger unit housing is encapsulated at the top of the upper mounting cavity, and an upper sliding hole communicating with the interior of the upper mounting cavity is provided on the upper plate 202 of the trigger unit housing; the second magnetic element 5 is integrated on the locking slider 203, and the two are slidably arranged in the upper mounting cavity, and the locking slider 203 partially slides out of the upper sliding hole and cooperates with the locking groove.

[0075] The trigger unit lower portion 301 includes a third magnetic element 6, an elastic recovery component, a pressing component 302, and a trigger unit housing lower plate 303. The trigger unit housing lower plate 303 is encapsulated at the bottom of the lower mounting cavity and is provided with a lower sliding hole that communicates with the interior of the lower mounting cavity. The third magnetic element 6 is integrated with the pressing component 302, and the two are slidably disposed within the lower mounting cavity. The pressing component 302 partially slides out of the lower sliding hole. The elastic recovery component is located within the lower mounting cavity, with one end of the elastic recovery component fixed to the inner wall of the lower mounting cavity and the other end fixed to the pressing component 302.

[0076] The first magnetic element 4 , the second magnetic element 5 and the third magnetic element 6 have the same magnetic direction.

[0077] Specifically, the second magnetic element 5 is fixed to the locking slider 203 and moves together with it. A chute is provided within the trigger unit housing 204 to guide the up and down movement of the locking slider 203 and the second magnetic element 5, achieving effective locking and unlocking functions. Furthermore, a stop structure is provided at the bottom of the chute to limit the range of movement of the locking slider 203 and the second magnetic element 5.

[0078] The trigger unit housing 204 is provided with a structure for the pressing member 302 to pass through, so as to achieve effective coordination between the pressing operation and the elastic recovery component. At the same time, the pressing member 302 is provided with a structure for fixing the third magnetic element 6 and has the function of moving up and down inside the trigger unit housing 204.

[0079] The third magnetic element 6 is fixed to the pressing component 302 and installed from the bottom of the trigger unit housing 204, cooperating with the elastic recovery assembly. The trigger unit housing lower plate 303 is used to seal and fix the pressing component 302 to ensure that it remains stable during movement and does not fall out.

[0080] Example 5

[0081] This embodiment is a further optimization based on the embodiment 4, specifically:

[0082] The elastic recovery component is a spring 205 arranged in the lower mounting cavity in a compressed state. One end of the spring 205 is fixed to the inner wall of the lower mounting cavity, and the other end is fixed to the pressing component 302.

[0083] Specifically, a compression space lower mounting cavity for compressing the spring 205 is provided inside the trigger unit housing 204 , and the spring 205 is installed through the bottom of the trigger unit housing 204 to provide necessary support and resilience for the pressing component 302 .

[0084] Example 6

[0085] This embodiment is further optimized based on embodiment 4 or 5, specifically:

[0086] The locking slider 203 includes a bottom disc located in the upper mounting cavity and a guide column fixed at the center of the bottom disc. The second magnetic element 5 is an annular magnet that is sleeved on the outside of the guide column and fixed on the bottom disc. The diameter of the guide column is smaller than the diameter of the upper sliding hole. The guide column passes through the upper sliding hole and cooperates with the locking groove.

[0087] The sum of the thicknesses of the bottom disc and the second magnetic element 5 is smaller than the distance between the annular mounting platform and the upper plate 202 of the trigger unit housing.

[0088] Example 7

[0089] This embodiment is a further optimization based on any one of Embodiments 4 to 6, specifically:

[0090] The pressing component 302 includes a central pressing column and a guide ring sleeved on the outside of the central pressing column through a connecting block. The central pressing column and the guide ring are concentrically arranged. The guide ring is slidably arranged in the lower mounting cavity. The guide rings extend from both ends of the central pressing column.

[0091] The third magnetic element 6 is fixedly mounted on the central pressing post in the installation cavity; the lower end of the central pressing post extends to the outside of the lower sliding hole;

[0092] One end of the spring 205 is fixed in the lower mounting cavity, and the other end is fixed on the guide ring.

[0093] The sum of the axial thicknesses of the guide ring and the third magnetic element 6 is smaller than the distance between the annular mounting platform and the lower plate 303 of the trigger unit housing.

[0094] All magnetic components can be made of different magnetic materials as long as their functions are met, including but not limited to: magnets, neodymium iron boron and ferrite.

[0095] Working principle:

[0096] When the trigger unit 2 approaches the locking unit 1, the locking slider 203 and the second magnetic element 5 on it, attracted by the first magnetic element 4 in the locking unit 1, move toward the first magnetic element 4 in the locking unit 1. During this process, the locking slider 203 smoothly inserts into the locking slot in the trigger unit 2. The centers of the first magnetic element 4 and the second magnetic element 5 are aligned and have the same magnetic direction, forming a stable attractive force. The slider stops after reaching the locked position, ensuring a stable locking function.

[0097] When pressing component 302, it compresses spring 205, causing third magnetic element 6 on its upper portion to approach second magnetic element 5 on locking slider 203. The third magnetic element 6 and second magnetic element 5 align in center and have the same magnetic direction, attracting each other. As the distance between third magnetic element 6 and second magnetic element 5 decreases, locking slider 203 moves downward, unlocking the lock.

[0098] Subsequently, the trigger unit 2 is moved to separate it from the locking unit 1, thereby completely disconnecting the two. When the external force is released, the elastic restoring force generated by the compression spring 205 quickly resets the pressing component 302, and the second magnetic element 5 and the third magnetic element 6 return to their initial positions.

Claims

1. A magnetically triggered self-locking structure, characterized in that: The invention comprises a locking unit (1) and a trigger unit (2); a magnetic locking groove is provided on one side of the locking unit (1); a magnetic locking component cooperating with the locking groove is slidably provided in the trigger unit (2); and a magnetic unlocking component cooperating with the locking component is slidably provided in the trigger unit (2).

2. A magnetically triggered self-locking structure according to claim 1, characterized in that: The locking unit (1) comprises a locking unit upper shell (101), a first magnetic element (4) and a locking unit lower shell (102); The upper surface of the locking unit lower shell (102) is recessed inward to form a groove for mounting the first magnetic element (4); the locking unit upper shell (101) is arranged at the opening of the groove on the upper surface of the locking unit lower shell (102) in a sealed manner; and the locking groove is located on the lower surface of the locking unit lower shell (102) and is connected to the groove.

3. A magnetically triggered self-locking structure according to claim 2, characterized in that: The locking unit lower shell (102) is a cylindrical structure, the locking groove is a circular groove axially extending through the middle of the locking unit lower shell (102), the groove is a circular groove concentric with the locking groove, the groove is located at the top of the locking unit lower shell (102), the diameter of the groove is larger than the diameter of the locking groove, and the first magnetic element (4) is an annular magnetic element, and the first magnetic element (4) is fixedly installed in the groove.

4. A magnetically triggered self-locking structure according to claim 3, characterized in that: The inner ring diameter of the first magnetic element (4) is greater than or equal to the diameter of the locking groove.

5. The magnetically triggered self-locking structure according to claim 2, characterized in that: The trigger unit (2) further comprises a trigger unit housing (204), the locking component is arranged at the upper end inside the trigger unit housing (204), the unlocking component is arranged at the lower end inside the trigger unit housing (204), the locking component is the trigger unit upper part (201), and the unlocking component is the trigger unit lower part (301); A vertical mounting hole is provided inside the trigger unit housing (204), an annular mounting platform is provided on the inner wall of the vertical mounting hole, and the annular mounting platform divides the vertical mounting hole into an upper mounting cavity and a lower mounting cavity; The trigger unit upper portion (201) comprises a trigger unit housing upper plate (202), a second magnetic element (5) and a locking slide block (203); the trigger unit housing upper plate (202) is encapsulated on the top of the upper mounting cavity, and an upper sliding hole communicating with the interior of the upper mounting cavity is provided on the trigger unit housing upper plate (202); the second magnetic element (5) is integrated on the locking slide block (203), and the two are slidably arranged in the upper mounting cavity, and the locking slide block (203) partially slides out of the upper sliding hole to cooperate with the locking groove; The trigger unit lower portion (301) comprises a third magnetic element (6), an elastic recovery component, a pressing component (302) and a trigger unit housing lower plate (303); the trigger unit housing lower plate (303) is encapsulated at the bottom of the lower mounting cavity, and the trigger unit housing lower plate (303) is provided with a lower sliding hole communicating with the interior of the lower mounting cavity; the third magnetic element (6) is integrated on the pressing component (302), and the two are slidably arranged in the lower mounting cavity, the pressing component (302) partially slides out of the lower sliding hole, the elastic recovery component is located in the lower mounting cavity, one end of the elastic recovery component is fixed to the inner wall of the lower mounting cavity, and the other end is fixed to the pressing component (302); The first magnetic element (4), the second magnetic element (5), and the third magnetic element (6) have the same magnetic direction; The second magnetic element (5) and the third magnetic element (6) have the same magnetic direction and attract each other, so that the locking slider (203) and the pressing component (302) remain stationary.

6. A magnetically triggered self-locking structure according to claim 5, characterized in that: The elastic recovery component is a spring (205) arranged in the lower installation cavity in a compressed state. One end of the spring (205) is fixed to the inner wall of the lower installation cavity, and the other end is fixed to the pressing component (302).

7. A magnetically triggered self-locking structure according to claim 6, characterized in that: The locking slider (203) comprises a bottom disc located in the upper mounting cavity and a guide post fixedly arranged at the center of the bottom disc, the second magnetic element (5) is an annular magnet sleeved on the outside of the guide post and fixed on the bottom disc, the diameter of the guide post is smaller than the diameter of the upper sliding hole, and the guide post passes through the upper sliding hole and cooperates with the locking groove.

8. A magnetically triggered self-locking structure according to claim 7, characterized in that: The sum of the thicknesses of the bottom disc and the second magnetic element (5) is smaller than the distance between the annular mounting platform and the upper plate (202) of the trigger unit housing.

9. The magnetically triggered self-locking structure according to claim 6, characterized in that: The pressing component (302) comprises a central pressing column and a guide ring sleeved on the outside of the central pressing column via a connecting block, the central pressing column and the guide ring being concentrically arranged, the guide ring being slidably arranged in the lower mounting cavity, and both ends of the central pressing column extending out of the guide ring; The third magnetic element (6) is fixedly sleeved on the central pressing column in the installation cavity; the lower end portion of the central pressing column extends to the outside of the lower sliding hole; One end of the spring (205) is fixed in the lower installation cavity, and the other end is fixed on the guide ring.

10. The magnetically triggered self-locking structure according to claim 9, characterized in that: The sum of the axial thicknesses of the guide ring and the third magnetic element (6) is smaller than the distance between the annular mounting platform and the lower plate (303) of the trigger unit housing.

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