Piston type magnetic clasp

Abstract

The application relates to the field of magnetic fasteners and provides a piston type magnetic fastener which comprises a first fastening body and a second fastening body, the first fastening body is provided with a piston cavity, a piston type fastening rod and a transverse lock tongue, the transverse lock tongue is slidably arranged in the piston type fastening rod, and the piston type fastening rod is slidably arranged in the piston cavity; the second fastening body is provided with a core fastening protrusion, the core fastening protrusion is slidably matched with the piston type fastening rod; the core fastening protrusion is provided with a core function magnet A, the transverse lock tongue is provided with a transverse fastening magnet B, and the piston type fastening rod is provided with a longitudinal fastening magnet C and an ejection separation magnet D. The piston rod reciprocating mode is adopted, the core function magnet A and the longitudinal fastening magnet C of the transverse fastening magnet B are simultaneously attracted, automatic locking is realized, the core function magnet A and the ejection separation magnet D are slidably repelled, and ejection unlocking is realized.

Description

Technical Field

[0001] This invention relates to a piston-type magnetic clasp, belonging to the field of magnetic clasps. Background Technology

[0002] Various fasteners are frequently used in daily life. Most fasteners are plug-in type, typically consisting of two interlocking parts. Using these requires the operator to use both hands simultaneously, but situations often arise where it's impossible to operate them with both hands at the same time. These plug-in fasteners cannot meet the needs of various scenarios, hence the development of magnetic fasteners to solve this problem. Magnetic fasteners also generally consist of two interlocking parts, incorporating magnets, and rely primarily on magnetic force to lock the fastener. However, most magnetic fasteners on the market currently require forceful separation of the two interlocking parts after locking. This requires resisting the magnetic force, making the separation operation laborious and requiring work to be done on both ends separately. Furthermore, even after separation, they may quickly re-lock within the range of their mutual attraction, resulting in a poor user experience. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a piston-type magnetic buckle, comprising: a first fastening body and a second fastening body, wherein the first fastening body is provided with a piston cavity, a piston-type fastening rod and a transverse locking tongue, the transverse locking tongue being slidably disposed within the piston-type fastening rod, and the piston-type fastening rod being slidably disposed within the piston cavity.

[0004] The second fastening body is provided with a core fastening protrusion, which is slidably corresponding to and engaged with the piston-type fastening rod; a core functional magnet is provided inside the core fastening protrusion, a transverse fastening magnet is provided inside the transverse locking tongue, and a longitudinal fastening magnet and an ejection separation magnet are provided inside the piston-type fastening rod.

[0005] A core engagement groove is provided on the side of the piston cavity at a position matching the core engagement protrusion, and an engagement slide groove is provided on the side of the piston-type engagement rod at a position matching the core engagement protrusion. A longitudinal engagement magnet slot and an ejector separation magnet slot are arranged side by side at the bottom of the engagement slide groove, and a transverse locking tongue slot is provided on the side of the engagement slide groove at a position corresponding to the longitudinal engagement magnet slot. The transverse locking tongue is slidably disposed in the transverse locking tongue slot, and a transverse engagement magnet slot is provided in the transverse locking tongue. A core functional magnet slot is provided in the core engagement protrusion, and the core functional magnet is embedded in the core functional magnet slot. The transverse engagement magnet is embedded in the transverse engagement magnet slot, and the longitudinal engagement magnet and ejector separation magnet are respectively embedded in the longitudinal engagement magnet slot and the ejector separation magnet slot. When the first and second fastening bodies approach each other, the two engaging surfaces of the core functional magnet simultaneously engage with the transverse and longitudinal fastening magnets, respectively, automatically locking the first and second fastening bodies. When the piston-type fastening rod is pressed, so that the core functional magnet corresponds to the ejection separation magnet, the second fastening body is ejected from the first fastening body under the repulsive force of the two magnets, realizing the ejection unlocking between the first and second fastening bodies.

[0006] The core engaging protrusion has a recessed transverse locking groove on its end face that matches the transverse locking tongue. An unlocking guide female surface is located inside the transverse locking groove. A guide block is located at the front end of the transverse locking tongue, with a locking guide surface on the upper front part of the guide block. An unlocking guide male surface is located on the inner side of the guide block at a position that matches the unlocking guide female surface. The cooperation of the unlocking guide female surface and the unlocking guide male surface makes the unlocking action smoother.

[0007] The piston cavity side is provided with a snap-fit ​​angled hook and a straight hook snap-fit ​​groove, and the second snap-fit ​​body side is provided with a matching angled hook snap-fit ​​groove and a snap-fit ​​straight hook. The snap-fit ​​angled hook is snapped into the angled hook snap-fit ​​groove, and at the same time, the snap-fit ​​straight hook is snapped into the straight hook snap-fit ​​groove, which can strengthen the snap-fit ​​strength of the first snap-fit ​​body and the second snap-fit ​​body.

[0008] The outer side of the snap-fit ​​hook is provided with a snap-fit ​​guide slope, and the top of the snap-fit ​​hook is provided with an unlocking guide arc surface, which makes it easier for the snap-fit ​​hook to engage with the snap-fit ​​groove and ensures automatic engagement. The piston chamber and the piston-type locking rod are configured as matching polygons.

[0009] A piston limiting groove is provided on the side wall of the piston chamber, and a matching limiting protrusion is provided on the piston-type locking rod. The limiting protrusion is slidably embedded in the piston limiting groove to limit the stroke of the piston-type locking rod in the piston chamber.

[0010] A button is provided at the end of the piston-type fastening rod, and a limiting ring matching the outer edge of the piston cavity is provided on the side of the button. A fastening guard plate matching the contour of the piston cavity is provided on the side of the second fastening body.

[0011] The piston chamber, piston-type locking rod, and core locking protrusion, along with their corresponding transverse locking tongue, longitudinal locking magnet, and ejection separation magnet, are configured as a group.

[0012] The inner end of the piston-type locking rod is provided with a spring insert, and a return spring that matches the spring insert is provided. One end of the return spring is fixed to the spring insert, and the other end is pressed against the inner wall of the piston cavity.

[0013] The piston chamber, piston-type locking rod, and core locking protrusion, along with their corresponding transverse locking tongue, longitudinal locking magnet, and ejection separation magnet, are arranged in two symmetrical sets.

[0014] The inner ends of the symmetrical piston-type fastening rods are respectively provided with spring inserts, and a return spring is provided that matches the two spring inserts. The two ends of the return spring are respectively embedded in the two symmetrical spring inserts.

[0015] A spring insert can be provided on the inner side of the piston-type locking rod, and a return spring is provided, with one end of the spring insert fixed to the spring insert and the other end pressing against the inner wall of the piston cavity.

[0016] The piston chamber, piston-type locking rod, core locking protrusion, and their cooperating components can be configured as one set or as two symmetrical sets to further improve the stability of the locking. In this case, the return springs are respectively embedded in the spring inserts at both ends.

[0017] To ensure proper load distribution, the first fastening body of the present invention may be equipped with one or more first fastening rings, and the second fastening body may also be equipped with one or more second fastening rings.

[0018] This invention achieves automatic locking by simultaneously engaging a core functional magnet and a longitudinally engaging magnet of a transverse engaging magnet through the reciprocating motion of a piston rod; it also achieves ejection unlocking by having the core functional magnet slide against and repel the ejection separation magnet; while ensuring a stable engagement of the two engaging bodies, it greatly improves the ease of use of the product and meets the high-end needs of users who pursue the ultimate experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the disassembled state of the present invention; Figure 2 This is a schematic diagram of the disassembled state of the present invention from another perspective; Figure 3 This is the main view of the combined state of the present invention; Figure 4 yes Figure 3 Schematic diagram of the AA section; Figure 5 This is a three-dimensional schematic diagram of the second fastening body of the present invention.

[0020] A - Core functional magnet, B - Lateral locking magnet, C - Longitudinal locking magnet, D - Ejection separation magnet; 1-First snap fastener assembly, 10-First snap ring; 11-Piston cavity, 111-Piston limiting groove, 112-Core fastening groove, 113-Facing hook, 1131-Facing guide slope, 1132-Unlocking guide arc surface, 114-Straight hook fastening groove; 12-Piston-type locking rod, 121-Limiting protrusion, 122-Locking groove, 1221-Longitudinal locking magnet slot, 1222-Ejection separation magnet slot, 1223-Transverse locking tongue groove, 123-Button, 1231-Limiting ring, 124-Spring insert; 13-Horizontal locking tongue, 131-Horizontal engaging magnet slot, 132-Guide block, 1321-Locking guide surface, 1322-Unlocking guide surface; 14-Return spring; 2-Second snap fastener, 20-Second snap ring; 21-Core engaging protrusion, 211-Core functional magnet slot, 212-Horizontal locking slot, 2121-Unlocking guide side, 22-Activating guard plate, 23-Angled hook slot, 24-Activating straight hook. Detailed Implementation

[0021] like Figures 1 to 5 As shown, the piston-type magnetic buckle provided by the present invention includes a first fastening body 1 and a second fastening body 2. The first fastening body 1 has a piston cavity 11, a piston-type fastening rod 12, and a transverse locking tongue 13. The transverse locking tongue 13 is slidably disposed within the piston-type fastening rod 12, and the piston-type fastening rod 12 is slidably disposed within the piston cavity 11. The second fastening body 2 has a core fastening protrusion 21, which is slidably corresponding to and engages with the piston-type fastening rod 12. A core functional magnet A is disposed within the core fastening protrusion 21, and a transverse fastening magnet B is disposed within the transverse locking tongue 13. The piston-type fastening rod 12 is provided with a longitudinal fastening magnet C and a ejector separation magnet D. When the first fastening body 1 and the second fastening body 2 approach each other, the two attraction surfaces of the core functional magnet A are simultaneously attracted to the transverse fastening magnet B and the longitudinal fastening magnet C, respectively, automatically locking the first fastening body 1 and the second fastening body 2. When the piston-type fastening rod 12 is pressed so that the core functional magnet A corresponds to the ejector separation magnet D, the second fastening body 2 is ejected from the first fastening body 1 under the repulsive force of the two magnets, realizing the ejection unlocking between the first fastening body 1 and the second fastening body 2.

[0022] In this invention, a core engagement groove 112 is formed on the side of the piston cavity 11 at a position matching the core engagement protrusion 21, and an engagement slide groove 122 is provided on the side of the piston-type engagement rod 12 at a position matching the core engagement protrusion 21; a longitudinal engagement magnet groove 1221 and an ejection separation magnet groove 1222 are arranged side by side at the bottom of the engagement slide groove 122, and a transverse locking tongue groove 1223 is provided on the side of the engagement slide groove 122 at a position corresponding to the longitudinal engagement magnet groove 1221; the transverse locking tongue 13 is slidably disposed in the transverse locking tongue groove 1223, and the transverse locking tongue 13 is provided with a transverse engagement magnet groove 131; the core... The locking protrusion 21 has a core functional magnet slot 211. The core functional magnet A is fixed in the core functional magnet slot 211, the transverse locking magnet B is fixed in the transverse locking magnet slot 131, and the longitudinal locking magnet C and the ejector separation magnet D are respectively fixed in the longitudinal locking magnet slot 1221 and the ejector separation magnet slot 1222. The core functional magnet A and the transverse locking magnet B attract each other in the horizontal direction, and the core functional magnet A and the longitudinal locking magnet C attract each other in the vertical direction, driving automatic locking; the core functional magnet A and the ejector separation magnet D repel each other, driving ejection unlocking.

[0023] The core engaging protrusion 21 has a transverse locking groove 212 recessed on its end face that matches the transverse locking tongue 13. An unlocking guide female surface 2121 is provided inside the transverse locking groove 212. A guide block 132 is provided at the front end of the transverse locking tongue 13. A locking guide surface 1321 is provided on the upper front part of the guide block 132. An unlocking guide male surface 1322 is provided on the inner side of the guide block 132 at a position matching the unlocking guide female surface 2121. When the first engaging body 1 and the second engaging body 2 are engaged, the transverse locking tongue 13 is subjected to magnetic attraction. The bolt 13 extends from the transverse locking tongue groove 1223 and inserts into the transverse locking groove 212. During the locking process, as the core locking protrusion 21 moves downward, the locking guide surface 1321 on the upper front of the guide block 132 avoids the core locking protrusion 21, allowing it to descend smoothly. After the core locking protrusion 21 descends into place, the locking guide surface 1321 guides the transverse locking tongue 13 to smoothly insert into the transverse locking groove 212, locking the longitudinal displacement between the first locking body 1 and the second locking body 2. When the piston-type locking rod 12 is pressed to unlock, the unlocking guide male surface 1322 on the inner side of the guide block 132 and the unlocking guide female surface 2121 on the inner side of the transverse locking groove 212 undergo relative displacement, guiding the transverse locking tongue 13 to smoothly exit the transverse locking groove 212 and move inward with the piston-type locking rod 12, releasing the locking of the longitudinal displacement between the first locking body 1 and the second locking body 2, clearing the obstruction for the ejection unlocking between the first locking body 1 and the second locking body 2.

[0024] To increase the engagement strength between the first engaging body 1 and the second engaging body 2, an engaging hook 113 and a straight hook groove 114 are provided on the side of the piston cavity 11, and a matching hook groove 23 and a straight hook 24 are provided on the side of the second engaging body 2. In order to ensure smooth engagement and unlocking while increasing the engagement strength, an engaging guide slope 1131 is provided on the outside of the engaging hook 113, and an unlocking guide arc surface 1132 is provided on the top of the engaging hook 113.

[0025] The piston cavity 11 and piston-type engaging rod 12 of this invention are configured as matching polygons to ensure the stability and reliability of the engagement and the ease of unlocking. A piston limiting groove 111 is provided on the side wall of the piston cavity 11, and a matching limiting protrusion 121 is provided on the piston-type engaging rod 12. The limiting protrusion 121 is slidably embedded in the piston limiting groove 111 to limit the stroke of the piston-type engaging rod 12 within the piston cavity 11. Furthermore, a button 123 is provided at the end of the piston-type engaging rod 12 to ensure a comfortable feel during unlocking. A limiting ring 1231 matching the outer edge of the piston cavity 11 is provided on the side of the button 123, and an engaging guard plate 22 matching the contour of the piston cavity 11 is provided on the side of the second engaging body 2, enhancing the aesthetics of this invention.

[0026] The piston chamber 11, piston-type locking rod 12, and core locking protrusion 21, along with their corresponding transverse locking tongue 13, longitudinal locking magnet C, and ejection separation magnet D, are configured as a group.

[0027] The piston-type locking rod 12 has a spring insert 124 at its inner end, and a return spring 14 that matches the spring insert 124 is provided. One end of the return spring 14 is fixed to the spring insert 124, and the other end is pressed against the inner wall of the piston cavity 11.

[0028] The piston chamber 11, piston-type locking rod 12, and core locking protrusion 21, along with their corresponding transverse locking tongue 13, longitudinal locking magnet C, and ejection separation magnet D, are arranged in two symmetrical sets.

[0029] The inner ends of the symmetrical piston-type locking rod 12 are respectively provided with spring inserts 124, and a return spring 14 is provided to match the two spring inserts 124. The two ends of the return spring 14 are respectively embedded in the two symmetrical spring inserts 124.

[0030] Although the magnet assembly of the present invention can achieve automatic locking and ejection unlocking, to further enhance the user experience, a spring insert 124 can be provided on the inner side of the piston-type locking rod 12, and a return spring 14 can be provided, one end of which is fixed to the spring insert 124, and the other end is pressed against the inner wall of the piston cavity 11. The piston cavity 11, piston-type locking rod 12, core locking protrusion 21 and their cooperating components can be set as one set, or as two symmetrical sets to further improve the stability of locking. In this case, the return spring 14 can be fixed to the spring inserts 124 at both ends respectively.

[0031] To ensure proper load distribution, the first fastening body 1 of this invention may be equipped with one or more first fastening rings 10, and the second fastening body 2 may also be equipped with one or more second fastening rings 20.

[0032] This invention achieves automatic locking by simultaneously engaging the core functional magnet A and the longitudinal engaging magnet C of the transverse engaging magnet B through the reciprocating motion of the piston rod; and achieves ejection unlocking by having the core functional magnet A slide against the ejection separation magnet D. While ensuring a stable engagement of the two engaging bodies, this invention greatly improves the ease of use of the product and meets the high-end needs of users who pursue the ultimate experience.

Claims

1. A piston-type magnetic clasp, comprising: The first fastening body (1) and the second fastening body (2) are characterized in that: The first fastening body (1) is provided with a piston cavity (11), a piston-type fastening rod (12) and a transverse locking tongue (13). The transverse locking tongue (13) is slidably disposed in the piston-type fastening rod (12), and the piston-type fastening rod (12) is slidably disposed in the piston cavity (11). The second fastening body (2) is provided with a core fastening protrusion (21), which is slidably engaged with the piston-type fastening rod (12); a core functional magnet (A) is provided inside the core fastening protrusion (21), a transverse fastening magnet (B) is provided inside the transverse locking tongue (13), and a longitudinal fastening magnet (C) and a ejection separation magnet (D) are provided inside the piston-type fastening rod (12); when the first fastening body (1) and the second fastening body (2) approach each other, The two engaging surfaces of the core functional magnet (A) engage simultaneously with the transverse engaging magnet (B) and the longitudinal engaging magnet (C), automatically locking the first engaging body (1) and the second engaging body (2). When the piston-type engaging rod (12) is pressed, so that the core functional magnet (A) corresponds to the ejection separation magnet (D), the second engaging body (2) is ejected from the first engaging body (1) under the repulsive force of the two magnets, realizing the ejection unlocking between the first engaging body (1) and the second engaging body (2).

2. The piston-type magnetic buckle as described in claim 1, characterized in that: A core engagement groove (112) is provided on the side of the piston cavity (11) at a position matching the core engagement protrusion (21). An engagement slide groove (122) is provided on the side of the piston-type engagement rod (12) at a position matching the core engagement protrusion (21). A longitudinal engagement magnet groove (1221) and an ejection separation magnet groove (1222) are arranged side by side at the bottom of the engagement slide groove (122). A transverse locking tongue slide groove (1223) is provided on the side of the engagement slide groove (122) at a position corresponding to the longitudinal engagement magnet groove (1221). The transverse locking tongue (13) is slidable. The transverse locking tongue is dynamically set in the transverse locking tongue groove (1223), and the transverse locking tongue (13) is provided with a transverse locking magnet groove (131); the core locking protrusion (21) is provided with a core functional magnet groove (211), the core functional magnet (A) is fixed in the core functional magnet groove (211), the transverse locking magnet (B) is fixed in the transverse locking magnet groove (131), and the longitudinal locking magnet (C) and the ejection separation magnet (D) are respectively fixed in the longitudinal locking magnet groove (1221) and the ejection separation magnet groove (1222).

3. A piston-type magnetic buckle as described in claim 1, characterized in that: The core engaging protrusion (21) and the transverse locking tongue (13) have a transverse locking groove (212) recessed on their end faces. The transverse locking groove (212) has an unlocking guide female surface (2121) on its inner side. The transverse locking tongue (13) has a guide block (132) at its front end. The guide block (132) has a locking guide surface (1321) at its upper front part. The guide block (132) has an unlocking guide male surface (1322) at the position on its inner side that matches the unlocking guide female surface (2121).

4. A piston-type magnetic buckle as described in claim 1, characterized in that: The piston cavity (11) is provided with a snap hook (113) on the side, and a matching snap hook groove (23) is provided on the side of the second snap body (2).

5. A piston-type magnetic buckle as described in claim 1, characterized in that: The piston chamber (11) is provided with a straight hook groove (114) on the side, and a matching straight hook (24) is provided on the side of the second fastening body (2).

6. A piston-type magnetic clasp as described in claim 4, characterized in that: The outer side of the snap-fit ​​hook (113) is provided with a snap-fit ​​guide slope (1131), and the top of the snap-fit ​​hook (113) is provided with an unlocking guide arc surface (1132).

7. A piston-type magnetic buckle as described in claim 1, characterized in that: The piston chamber (11) and the piston-type locking rod (12) are configured as matching polygons.

8. A piston-type magnetic buckle as described in claim 1, characterized in that: A piston limiting groove (111) is provided on the side wall of the piston chamber (11), and a matching limiting protrusion (121) is provided on the piston-type locking rod (12). The limiting protrusion (121) is slidably embedded in the piston limiting groove (111) to limit the stroke of the piston-type locking rod (12) in the piston chamber (11).

9. A piston-type magnetic buckle as described in claim 1, characterized in that: The piston-type locking rod (12) is provided with a button (123) at its end, and a limiting ring (1231) matching the outer edge of the piston cavity (11) is provided on the side of the button (123).

10. A piston-type magnetic clasp as described in claim 1, characterized in that: The second fastening body (2) has a fastening guard plate (22) on its side that matches the contour of the piston cavity (11).

11. A piston-type magnetic clasp as described in claim 1, characterized in that: The piston chamber (11), piston-type locking rod (12), and core locking protrusion (21), along with their corresponding transverse locking tongue (13), longitudinal locking magnet (C), and ejection separation magnet (D), are configured as a group.

12. A piston-type magnetic buckle as described in claim 11, characterized in that: The piston-type locking rod (12) has a spring insert (124) at its inner end, and a return spring (14) that matches the spring insert (124) is provided. One end of the return spring (14) is fixed on the spring insert (124), and the other end is pressed against the inner wall of the piston cavity (11).

13. A piston-type magnetic clasp as described in claim 1, characterized in that: The piston chamber (11), piston-type locking rod (12), and core locking protrusion (21), along with their corresponding transverse locking tongue (13), longitudinal locking magnet (C), and ejection separation magnet (D), are arranged in two symmetrical sets.

14. A piston-type magnetic clasp as described in claim 13, characterized in that: The inner ends of the symmetrical piston-type locking rod (12) are respectively provided with spring inserts (124), and a return spring (14) is provided that matches the two spring inserts (124). The two ends of the return spring (14) are respectively embedded in the two symmetrical spring inserts (124).

15. A piston-type magnetic clasp as described in claim 1, characterized in that: The first fastening body (1) is provided with one or more first buckles (10), and the second fastening body (2) is also provided with one or more second buckles (20).

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