Magnetic fastener

Abstract

The invention relates to the technical field of connecting buckles, in particular to a magnetic attraction fastener which comprises a primary fastener and a secondary fastener which can be mutually attracted and fastened, the primary fastener comprises a shell, an upper cover matched with the shell, a magnetic attraction part and a key assembly which are mounted in the shell, and further comprises a mounting cavity with one end located in the shell and the other end protruding out of the bottom of the shell, a locking assembly linked with the key assembly is arranged in the mounting cavity; in the locking state, the female buckle guides the mounting cavity to penetrate through the male buckle through a magnetic attraction piece arranged in the female buckle, limiting is formed through assembly of the mounting cavity and the male buckle to limit movement of the female buckle, and the locking assembly is movably buckled into the male buckle to form the locking state; in the unlocking state, the key assemblies on the two sides are pressed to make the key assemblies move transversely, the locking assembly moves along with the key assemblies to unlock the son buckle, at the moment, the mother buckle can be pulled upwards to be taken out, and the buckling process is simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting fasteners, and in particular to a magnetic fastener. Background Art

[0002] Some parts on backpacks, shoulder straps, child safety seats, and child waist stools usually need to be connected or maintained in a certain state through buckles, and usually need to be able to quickly and easily unlock the buckles. For example, child waist stools or shoulder straps often need to be connected and unlocked during use, which can be achieved through buckles. Common buckles usually include sub-buckles and mother buckles, which are connected by magnetic buckles.

[0003] The existing magnetic buckle has magnets on the sub-buckle and the mother buckle respectively, and the two magnets are attracted by the mutual magnetic attraction. However, the two magnets may not have enough attraction force, which may cause separation during use. Therefore, it is necessary to further increase the connection strength by adding a lock structure, and the lock structure is usually unlocked by a button. The stability of the existing lock structure is relatively general. The lock result or button may shake or shift during use, resulting in the general quality of the product. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a magnetic fastener. In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A magnetic fastener comprises a mother buckle and a child buckle which can be attracted and buckled with each other, characterized in that the mother buckle comprises a shell, an upper cover cooperating with the shell, and a magnetic attraction part and a button assembly installed in the shell, and also comprises an installation cavity with one end located inside the shell and the other end protruding from the bottom of the shell, and a locking assembly linked to the button assembly is arranged in the installation cavity, and in the locked state, the mother buckle guides the installation cavity through the child buckle through the internal magnetic attraction part, and a limit is formed by assembling the installation cavity and the child buckle to limit the movement of the mother buckle, and the locking assembly is movably buckled into the child buckle to form a lock; in the unlocked state, the button assembly moves laterally, and the locking assembly is released from the lock with the child buckle as the button assembly moves.

[0006] Furthermore, the button assembly includes a first button and a second button respectively located on both sides of the shell, and a return spring supported between the first button and the second button. A button cavity is opened on both sides of the shell, and the outer ends of the first button and the second button are exposed outside the button cavity.

[0007] Furthermore, sliders extending to the second button are provided on both sides of the first button, and sliding grooves are provided on both sides of the second button. When the first button and the second button are activated, the sliders slide in the sliding grooves.

[0008] Furthermore, blocks are provided on both sides of the first button and the second button, and concave guide grooves are provided at the upper and lower ends of the blocks. Guide blocks adapted to the guide grooves are provided in the shell and the upper cover. When the first button and the second button move, the guide grooves move on the guide blocks.

[0009] Furthermore, the locking assembly includes a first locking member and a second locking member that are laterally movable in the installation cavity. The first locking member and the second locking member are symmetrically arranged and are respectively connected to the first button and the second button. A movable cavity is formed between the first locking member and the second locking member, and the first locking member is movable in the opposite direction to the second locking member. Through holes are provided on both sides of the installation cavity, and lock tongues are provided on the first locking member and the second locking member, respectively passing through the through holes on one side of each side, and locking is formed by buckling the lock tongue into the sub-button.

[0010] Furthermore, the installation cavity includes a cylindrical installation cavity, the locking tongue is adapted to the inner contour of the installation cavity, and the locking tongue always moves laterally in conformity with the inner contour of the installation cavity.

[0011] Furthermore, an assembly groove is provided in the shell, the assembly groove is located at the outer edge of the installation cavity, and the magnetic attraction part is installed in the assembly groove; a first opening is provided on both sides of the assembly groove, and a second opening is provided on both sides of the installation cavity, and the button assembly can be movably installed in the first opening and the second opening.

[0012] Furthermore, an annular mounting groove is provided at the lower end of the sub-buckle, and an adsorption component is provided in the mounting groove. When the sub-buckle and the female buckle are buckled with each other, the magnetic attraction component and the adsorption component are adsorbed to each other.

[0013] Furthermore, the sub-buckle is provided with a mounting hole adapted to the outer contour of the mounting cavity, the inner wall of the mounting hole is provided with a raised limiting step, the lock tongue and the limiting step abut against each other to achieve locking, the lower end of the lock tongue is provided with a guide surface, and the upper end of the limiting step is provided with a guide surface.

[0014] Furthermore, a buckle installation groove adapted to the outer contour of the buckle is provided at the bottom of the shell. When the buckle and the mother buckle are buckled together, the buckle is installed in the buckle installation groove, and the outer wall of the buckle and the inner wall of the buckle installation groove are inclined surfaces that fit each other.

[0015] A limiting structure of a magnetic fastener, comprising a female buckle and a sub-buckle that can be mutually attracted and buckled, the female buckle comprising a shell, an upper cover matched with the shell, and a magnetic attraction member and a button assembly installed in the shell, and also comprising an installation cavity with one end located inside the shell and the other end protruding from the bottom of the shell, a locking assembly of a linkage button assembly is arranged in the installation cavity, a mounting hole adapted to the outer contour of the installation cavity is arranged on the sub-buckle, and the installation cavity is installed in the installation hole to form a first limit to limit the movement of the female buckle;

[0016] The bottom of the shell is provided with a sub-buckle installation groove adapted to the outer contour of the sub-buckle. When the sub-buckle and the mother buckle are buckled together, the sub-buckle is installed in the sub-buckle installation groove to form a second limit to restrict the movement of the mother buckle.

[0017] Furthermore, the locking assembly always moves in conformity with the inner contour of the installation cavity, forming a third level of limit; the assembly of the button assembly and the shell forms a fourth level of limit.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] The mother buckle of the present invention includes a shell, an upper cover matched with the shell, and a magnetic attraction part and a button assembly installed in the shell, and also includes an installation cavity with one end located in the shell and the other end protruding from the bottom of the shell. A locking assembly locked with the sub-buckle is arranged in the installation cavity, and the locking assembly is connected to the button assembly. The locking assembly is driven to move by pressing the button to release the locking relationship with the sub-buckle. The installation cavity is wrapped in the outer contour of the locking assembly, and the locking assembly always moves in accordance with the inner contour of the installation cavity, so that it can only move horizontally along the set pressing trajectory. When it wants to shake vertically, it is constrained by the installation cavity, which greatly increases the stability of the pressing activity of the button assembly, is not easy to shake, and ensures the excellent quality of the product.

[0020] The installation of the sub-buckle and the mother buckle is also relatively stable. The assembly of the installation cavity and the installation hole is the first level of lateral limitation, and the assembly of the outer contour of the sub-buckle and the sub-buckle installation groove is the second level of lateral limitation. The outer wall of the sub-buckle and the inner wall of the sub-buckle installation groove are inclined surfaces that fit each other, and the contact area is larger, which greatly increases the stability of the mother buckle and the sub-buckle after buckling, and is not easy to shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereogram of the present invention.

[0022] Figure 2 It is a cross-sectional view of the present invention.

[0023] Figure 3 The three-dimensional Figure 2 .

[0024] Figure 4 The three-dimensional Figure 3 .

[0025] Figure 5 It is a stereoscopic diagram of the key assembly of the present invention.

[0026] Figure 6 It is a three-dimensional diagram of the shell of the present invention.

[0027] Figure 7 It is an exploded view of the present invention.

[0028] Figure numerals: 1, mother buckle, 2, sub-buckle, 3, shell, 4, upper cover, 5, button assembly, 6, magnetic suction member, 7, installation cavity, 8, locking assembly, 9, first button, 10, second button, 11, return spring, 12, button cavity, 13, slider, 14, slide groove, 15, stopper, 16, guide groove, 17, guide block, 18, assembly groove, 19, first opening, 20, second opening, 21, first locking member, 22, second locking member, 23, lock tongue, 24, through hole, 25, installation groove, 26, adsorption member, 27, installation hole, 28, limiting step, 29, guide surface, 30, guide surface, 31, sub-buckle installation groove, 32, bottom film. DETAILED DESCRIPTION

[0029] 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-7 As shown, a magnetic fastener includes a mother buckle 1 and a child buckle 2 that can be mutually attracted and fastened, the child buckle 2 is used to be installed on a backpack, a baby carrier, or a child seat, and the mother buckle 2 is fastened and fixed by magnetic attraction. The mother buckle 1 includes a shell 3, an upper cover 4 that matches the shell 3, and a magnetic attraction member 6 and a button assembly 5 installed in the shell 3, and also includes an installation cavity 7 with one end located in the shell 3 and the other end protruding from the bottom of the shell 3. A locking assembly 8 that is locked with the child buckle 2 is arranged in the installation cavity 7, and the locking assembly 8 is connected to the button assembly 5. The locking assembly 8 is driven to move by pressing the button, so as to release the locking relationship with the child buckle 2.

[0031] When the mother buckle 1 is fastened with the child buckle 2, the mother buckle 1 guides the installation cavity 7 to pass through the child buckle through the built-in magnetic attraction part 6. The assembly of the installation cavity 7 and the child buckle 2 forms a limit to limit the movement of the mother buckle. At the same time, the locking component 8 is movably buckled into the child buckle 2 to form a locked state. When unlocking is required, the button components 5 on both sides are pressed to make it move laterally. The locking component 8 moves with the button components 5 to release the lock with the child buckle 2. At this time, the mother buckle 1 can be pulled up to take out, and the fastening process is relatively simple and convenient.

[0032] The mounting cavity 7 is wrapped around the outer contour of the locking assembly 8, and the locking assembly 8 always moves in conformity with the inner contour of the mounting cavity 7, so that it can only move laterally along the set pressing trajectory. When it wants to shake longitudinally, it is constrained by the mounting cavity 7, which greatly increases the stability of the pressing activity of the button assembly 5, making it less likely to shake, thereby ensuring the excellent quality of the product.

[0033] The locking assembly 8 and the button assembly 5 are integrally formed to avoid unnecessary assembly and provide greater connection strength.

[0034] The button assembly 5 includes a first button 9 and a second button 10 respectively located on both sides of the shell 3, and a return spring 11 supported between the first button 9 and the second button 10. The first button 9 and the second button 10 are provided with a spring hole and a spring column for the return spring 11 to pass through. The two ends of the return spring 11 respectively pass through the spring holes on both sides and are sleeved on the spring column, so as to increase the stability of the installation of the return spring 11 and prevent it from falling out.

[0035] The shell 3 has button cavities 12 on both sides, and the first button 9 and the second button 10 are installed in the button cavity 12 with the outer ends exposed outside the button cavity 12 for users to press. When moving, the first button 9 and the second button 10 can only move in the button cavity 12, and touch the end of the button cavity 12 when pressed to a certain extent, so as to limit the maximum pressing distance of the first button 9 and the second button 10 to prevent damage caused by pressing too deep.

[0036] Slide blocks 13 extending to the second button 10 are arranged on both sides of the first button 9, and slide grooves 14 are arranged on both sides of the second button 10. When the first button 9 and the second button 10 are pressed, the slide blocks 13 are driven to slide in the slide grooves 14, which makes the pressing smoother and increases the pressing feel. At the same time, the slide blocks 13 clamp the second button 10 from both sides, which also plays a positioning effect, further increasing the stability of the button movement, and are not easy to deviate or shake.

[0037] Blocks 15 are provided on both sides of the first button 9 and the second button 10, and the block pieces are stuck in the button cavity 12 to prevent the first button 9 and the second button 10 from falling out. Concave guide grooves 16 are provided at the upper and lower ends of the block 15, and guide blocks 17 adapted to the guide grooves 16 are provided in the housing 3 and the upper cover 4. The guide blocks 17 are arranged horizontally, and the guide blocks 17 in the housing 3 are inserted into the guide grooves 16 at the lower end. When the upper cover 4 is buckled, the internal guide blocks 17 are inserted into the guide grooves 16 at the upper end. When the first button 9 and the second button 10 are pressed and moved, the guide grooves 16 are driven to move on the guide blocks 17, which guides the movement of the first button 9 and the second button 10, and is not prone to displacement or misalignment.

[0038] The housing 3 is provided with an assembly groove 18, and the assembly groove 18 is located at the outer edge of the mounting cavity 7. The magnetic attraction member 6 includes an annular magnet and is installed in the assembly groove 18. First openings 19 are provided on both sides of the assembly groove 18, and second openings 20 are provided on both sides of the mounting cavity 7. The two first openings 19 and the two second openings are in the same horizontal direction. The key assembly 5 can be installed on the first opening 19 and the second opening 20 in a horizontally movable manner, and also limits the longitudinal movement of the key assembly 5. When the first key 9 is pressed, it moves horizontally on the first opening 19 and the second opening 20 on one side. When the second key 10 is pressed, it moves horizontally on the first opening 19 and the second opening 20 on the other side.

[0039] The locking assembly 8 includes a first locking member 21 connected to the first button 9 and a second locking member 22 connected to the second button 10. The first locking member 21 and the second locking member 22 are symmetrically designed and respectively fit the inner contours of the two ends of the installation cavity 7, and a movable cavity is formed between the first locking member 21 and the second locking member 22. When the first button 9 and the second button 10 are pressed at the same time, the first locking member 21 and the second locking member 22 fit the inner wall of the installation cavity 7 and move. When the two are against each other, they cannot continue to be pressed. After releasing the hand, the first button 9 and the second button 10 are reset by the rebound force of the reset spring 11.

[0040] Through holes 24 are provided on both sides of the installation cavity 7, and locking tongues 23 are provided on the first locking member 21 and the second locking member 22, respectively passing through the through holes 24 on one side thereof, and are engaged with the sub-buckle 2 through the locking tongue 23, and the lock with the sub-buckle 2 is released by the movement of the locking tongue 23.

[0041] The installation cavity 7 includes a circular installation cavity, and the locking tongue 23 is arc-shaped and adapted to the inner contour of the installation cavity 7. This shape design can fit better, so that it can always fit the inner wall of the installation cavity 7 when pressed and moved, and has strong stability.

[0042] The existing connecting buckle may accidentally touch one side of the button during daily use, causing the sub-buckle and the mother buckle to fall off. Through the above structure, when the button on any side is pressed, only the lock tongue 23 on one side is active, and the sub-buckle 2 and the mother buckle 1 cannot be completely unlocked. Only the first button 9 and the second button 10 can be unlocked by pressing them at the same time, avoiding users from accidentally touching and causing them to fall off during daily use, ensuring the stability of product use and a good user experience. When used on a baby carrier, it can greatly ensure the safety of the baby.

[0043] The lower end of the sub-button 2 is provided with an annular mounting groove 25, which corresponds to the assembly groove 18 in the housing 3. The mounting groove 26 is provided with an adsorption member 26, which includes an annular metal member and an annular magnet. When the sub-button 2 and the mother buckle 1 are buckled together, the magnetic member 6 and the adsorption member 26 are mutually adsorbed. The annular design realizes adsorption at all angles, increases the adsorption area of ​​the magnetic member 6 and the adsorption member 26, and thus enhances the adsorption force between the mother buckle 1 and the sub-button 2, so that a good buckle can be achieved regardless of whether the user is younger or the adult is not able to operate properly.

[0044] The sub-buckle 2 is provided with a mounting hole 27 which is circular and matches the outer contour of the mounting cavity 7. The inner wall of the mounting hole 27 is provided with a raised limiting step 28. The locking tongue 23 and the limiting step 28 abut against each other to achieve longitudinal locking, and the female buckle 1 cannot be removed upwards; the mounting cavity 7 is embedded in the mounting hole 27 to achieve lateral limiting, and the female buckle 1 cannot shake left and right.

[0045] A bottom film 32 for closing the mounting groove 25 and the mounting hole 27 is provided at the bottom of the sub-buckle 2. After the adsorption component 26 is installed in the mounting groove 25, the bottom film 32 is installed by buckling, so as to prevent the fabric protrusion from being embedded in the mounting hole 27 when the sub-buckle 2 is sewn onto objects such as a strap and a backpack, thereby affecting the buckling of the mounting cavity 7.

[0046] A guide surface 29 is provided at the lower end of the locking tongue 23, and a guide surface 30 is provided at the upper end of the limiting step 28. The guide surface 30 and the guide surface 29 are inclined surfaces that can fit each other. When the female buckle 1 is assembled from top to bottom, the guide surface 30 moves along the guide surface 29, and there is no need to press the first button 9 and the second button 10. The locking tongue 23 is pushed open by the inclined surface to move inward. After the locking tongue 23 passes through the limiting step 28, it is rebounded by the return spring 11 and pops up to the lower end of the limiting step 28 to be fixed. The design of the guide surface 30 and the guide surface 29 facilitates the user's installation. The female buckle 1 can be buckled in without finding a precise point, and there is no need to press the button assembly 5 during assembly, which is convenient to operate.

[0047] The bottom of the housing 3 is provided with a sub-button installation groove 31 adapted to the outer contour of the sub-button 2. When the sub-button 2 and the mother buckle 1 are buckled together, the sub-button 2 is installed in the sub-button installation groove 31. The installation of the sub-button 2 and the mother buckle 1 is relatively stable, the assembly of the installation cavity 7 and the installation hole 27 is the first lateral limit, the assembly of the outer contour of the sub-button 2 and the sub-button installation groove 31 is the second lateral limit, and the outer wall of the sub-button 2 and the inner wall of the sub-button installation groove 31 are mutually fitted inclined surfaces, with a larger contact area, which greatly increases the stability of the mother buckle 1 and the sub-button 2 after buckling, and is not easy to shake.

[0048] The sub-buckle 1 comprises an annular sub-buckle, which solves the problem that it can only be fastened at a fixed angle or cannot be fastened at an oblique angle.

[0049] A limiting structure of a magnetic fastener includes a mother buckle 1 and a child buckle 2 that can be mutually attracted and fastened. The mother buckle 1 includes a shell 3, an upper cover 4 matched with the shell 3, and a magnetic attraction member 6 and a button assembly 5 installed in the shell 3. It also includes a mounting cavity 7 with one end located inside the shell 3 and the other end protruding from the bottom of the shell 3. The mounting cavity 7 is provided with a locking assembly 8 of the linkage button assembly 5. The child buckle 2 is provided with a mounting hole 27 adapted to the outer contour of the mounting cavity 7. When the child buckle 2 and the mother buckle 1 are fastened, the mounting cavity 7 is installed in the mounting hole 27 to form a first limit to limit the movement of the mother buckle; the bottom of the shell 3 is provided with a child buckle installation groove 31 adapted to the outer contour of the child buckle 1. When the child buckle 2 and the mother buckle 1 are fastened, the child buckle 1 is also installed in the child buckle installation groove 31 to form a second limit to limit the movement of the mother buckle. The lateral movement of the child buckle and the mother buckle after assembly is limited by the double limit, so that the stability after fastening is strong.

[0050] The locking assembly 8 always moves in accordance with the inner contour of the installation cavity 7 when the button assembly 5 moves, forming a third limit to limit the shaking of the locking assembly 8. The assembly of the button assembly 5 and the housing 3 forms a fourth limit, so that the button assembly 5 can only move laterally along the designed trajectory and is not easy to move. The present invention adopts a multiple limit design, which greatly increases the stability of the sub-button and the mother button after assembly, and also increases the stability of the button assembly 5 and the locking assembly 8, giving users a good practical experience and ensuring the excellent quality of the product.

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A magnetic fastener, comprising a female buckle and a male buckle that can be mutually attracted and fastened, characterized in that: The female buckle includes a shell, an upper cover matched with the shell, and a magnetic attraction member and a button assembly installed in the shell, and also includes an installation cavity with one end located inside the shell and the other end protruding from the bottom of the shell, wherein a locking assembly of the linkage button assembly is arranged in the installation cavity. In the locked state, the female buckle guides the installation cavity through the sub-buckle through the internal magnetic attraction part, and the assembly of the installation cavity and the sub-buckle forms a limit to limit the movement of the female buckle, and the locking component movably buckles into the sub-buckle to form a lock; In the unlocked state, the button assembly moves horizontally, and the locking assembly releases the lock from the sub-buckle as the button assembly moves.

2. A magnetic fastener according to claim 1, characterized in that: The button assembly includes a first button and a second button respectively located on both sides of the shell, and a reset spring supported between the first button and the second button, and the first button and the second button are provided with spring holes and spring columns for assembling the reset spring; button cavities are opened on both sides of the shell, and the first button and the second button are partially installed in the button cavity with the outer ends exposed outside the key cavity.

3. A magnetic fastener according to claim 2, characterized in that: Slide blocks extending to the second button are arranged on both sides of the first button, and slide grooves are arranged on both sides of the second button. When the first button and the second button are activated, the slide blocks slide in the slide grooves.

4. The magnetic fastener according to claim 2, characterized in that: Blocks are arranged on both sides of the first button and the second button, and concave guide grooves are arranged at the upper and lower ends of the block. Guide blocks adapted to the guide grooves are arranged in the shell and the upper cover. When the first button and the second button move, the guide grooves move on the guide blocks.

5. The magnetic fastener according to claim 2, characterized in that: The locking assembly includes a first locking member and a second locking member that are laterally movable in the installation cavity. The first locking member and the second locking member are symmetrically arranged and are respectively connected to the first button and the second button. A movable cavity is formed between the first locking member and the second locking member, and the first locking member is reversely movable to the second locking member. Through holes are arranged on both sides of the installation cavity, and lock tongues are arranged on the first locking member and the second locking member to pass through the through holes on their respective sides, and the lock tongues are buckled into the sub-buttons to form a lock.

6. The magnetic fastener according to claim 5, characterized in that: The installation cavity comprises a cylindrical installation cavity, the locking tongue is adapted to the inner contour of the installation cavity, and the locking tongue always fits the inner contour of the installation cavity and moves laterally.

7. The magnetic fastener according to claim 1, characterized in that: An assembly groove is provided in the shell, the assembly groove is located at the outer edge of the installation cavity, and the magnetic attraction part is installed in the assembly groove; first openings are provided on both sides of the assembly groove, and second openings are provided on both sides of the installation cavity, and the button assembly can be movably installed in the first opening and the second opening.

8. The magnetic fastener according to claim 1, characterized in that: An annular mounting groove is arranged at the lower end of the sub-buckle, and an adsorption component is arranged in the mounting groove. When the sub-buckle and the female buckle are buckled with each other, the magnetic attraction component and the adsorption component are adsorbed to each other.

9. The magnetic fastener according to claim 1, characterized in that: The sub-buckle is provided with a mounting hole adapted to the outer contour of the mounting cavity, the inner wall of the mounting hole is provided with a raised limiting step, the locking tongue and the limiting step are pressed against each other to achieve locking, the upper end of the locking tongue is provided with a guide surface, and the upper end of the limiting step is provided with a guide surface.

10. A magnetic fastener according to claim 9, characterized in that: The bottom of the shell is provided with a sub-buckle installation groove adapted to the outer contour of the sub-buckle. When the sub-buckle and the mother buckle are buckled together, the sub-buckle is installed in the sub-buckle installation groove, and the outer wall of the sub-buckle and the inner wall of the sub-buckle installation groove are inclined surfaces that fit each other.

11. A magnetic fastener limiting structure, comprising a female buckle and a male buckle that can be mutually attracted and fastened, characterized in that: The female buckle includes a shell, an upper cover matched with the shell, and a magnetic attraction member and a button assembly installed in the shell, and also includes an installation cavity with one end located inside the shell and the other end protruding from the bottom of the shell, wherein a locking assembly of the linkage button assembly is arranged in the installation cavity. The sub-button is provided with a mounting hole adapted to the outer contour of the mounting cavity, and the mounting cavity is installed in the mounting hole to form a first limit to restrict the movement of the female button; The bottom of the shell is provided with a sub-buckle installation groove adapted to the outer contour of the sub-buckle. When the sub-buckle and the mother buckle are buckled together, the sub-buckle is installed in the sub-buckle installation groove to form a second limit to restrict the movement of the mother buckle.

12. A magnetic fastener limiting structure according to claim 11, characterized in that: The locking assembly always fits the inner contour of the installation cavity and moves to form a third limit; the assembly of the button assembly and the shell forms a fourth limit.

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