CN116357651B - Anti-drop buckle structure - Google Patents

Abstract

The application relates to the field of buckle devices, in particular to an anti-falling buckle structure which comprises a sleeve, a plug and a buckle body, wherein the buckle body is used for connecting the sleeve and the plug, the buckle body comprises a clamping block, a clamping plate and a fixing component, the clamping block is connected to the side wall of the sleeve, the connecting plate is hinged to the plug, a first torsion spring is sleeved on a hinge shaft between the clamping plate and the plug, a connecting port is arranged at one end, close to the sleeve, of the clamping plate, the clamping plate is buckled with the clamping block through the connecting port, the fixing component comprises a push block and a fixing component, the push block is connected to the plug in a sliding mode, the push block is used for rotating the clamping plate, and the fixing component is used for limiting movement of the push block.

Description

Anti-drop buckle structure

Technical Field

The application relates to the field of buckle devices, in particular to an anti-falling buckle structure.

Background

The buckle structure is common quick connect structure in the life, and current buckle structure includes fixture block and joint board, and the joint board articulates on the part, is provided with the torsional spring on the articulated shaft between joint board and the part generally, is provided with on the joint board and is used for the through-hole that cup joints with the fixture block, rotates the joint board and realizes cup jointing between joint board and the buckle. But after the clamping plate is connected with the clamping block, the clamping plate is easy to loosen under the influence of interference factors such as external vibration and the like, so that the stability of the clamping structure is reduced.

Disclosure of Invention

In order to improve the stability of connection of the buckle structure, the application provides an anti-falling buckle structure.

The application provides an anti-falling buckle structure which adopts the following technical scheme:

the utility model provides an anti-drop buckle structure, includes sleeve, plug and buckle body, the buckle body is used for connecting sleeve and plug, the buckle body includes fixture block, joint board and fixed subassembly, the fixture block is connected on telescopic lateral wall, the joint board articulates on the plug, the epaxial cover of articulated between joint board and the plug is equipped with first torsional spring, the joint board is close to telescopic one end and is provided with the connector, the joint board passes through connector and fixture block lock joint, fixed subassembly includes ejector pad and mounting, ejector pad sliding connection is on the plug, the ejector pad is used for rotating the joint board, the mounting is used for restricting the removal of ejector pad.

Through adopting above-mentioned technical scheme, when first torsional spring is in natural state, joint board and fixture block lock joint, when needs the unblock, keep away from the one end of fixture block towards the plug with the joint board through the ejector pad and support and press, the sleeve is kept away from to the one end of joint board and fixture block lock joint rotates to remove the lock joint relation between joint board and the fixture block, thereby be convenient for realize being connected between sleeve and the plug fast, behind joint board and the fixture block lock joint, through the removal of mounting restriction ejector pad, reduced the ejector pad by the mistake bump the possibility that produces the removal, improved the stability that joint board and fixture block are connected.

Optionally, push away from telescopic one end at the joint board along the length direction of joint board, be connected with the piece that is used for articulated joint board on the plug, be provided with the spout on the lateral wall of piece, the spout sets up to L shape, the sleeve setting is kept away from to the horizontal part of spout, the vertical portion of spout sets up towards the axle center of plug, be connected with the slider on the lateral wall of push away from the piece, the slider is located the spout, just slider and spout sliding fit.

Through adopting above-mentioned technical scheme, when the slider is located the horizontal part of spout, the ejector pad is difficult to towards the plug removal to the joint board is difficult to rotate, promotes the ejector pad and makes the slider remove to vertical portion from the horizontal part of spout in, makes the ejector pad can be towards the plug removal, and the joint board rotates.

Optionally, a push plate is connected to one end, close to the sleeve, of the side wall, away from the plug, of the push block.

By adopting the technical scheme, the setting of push pedal is convenient for the operator to promote the ejector pad.

Optionally, be provided with the slot on the ejector pad, the ejector pad passes through the slot cover to be established on the joint board, the end connection that the joint board is close to the limiting plate has the spring, the one end that the joint board was kept away from to the spring is connected with the slot bottom.

By adopting the technical scheme, when the push block moves towards the clamping block, the bottom of the slot moves towards the end part of the clamping plate, the spring is compressed, the sliding block moves from the horizontal part to the vertical part of the sliding groove, and the clamping plate rotates; after the buckling relation between the clamping plate and the clamping block is relieved, the sliding block moves away from the plug under the action of the first torsion spring, the pushing block moves away from the clamping block under the action of the spring, and the sliding block moves into the horizontal part of the sliding groove to realize automatic reset of the pushing block.

Optionally, the fixture block is kept away from the plug slope towards the lateral wall of plug and is set up, works as when spring, first torsional spring are in natural state, the slider is located the horizontal part of spout, joint board and fixture block lock joint, mutual parallel interval sets up between ejector pad and the plug, joint board and slot are kept away from on the lateral wall of plug and are close to telescopic one end interval setting, joint board is kept away from telescopic one end and slot and is close to the lateral wall interval setting of plug.

Through adopting above-mentioned technical scheme, with sleeve and plug being close to each other and remove, the joint board supports the lateral wall that the slope set up on the fixture block and moves towards the sleeve, because there is the clearance between joint board and the slot lateral wall to make the joint board can rotate, thereby can realize the connection of sleeve and plug under the condition that does not promote the ejector pad.

Optionally, the mounting includes riser, lower picture peg and last picture peg are connected respectively at the both ends of riser, the one end that the riser was kept away from to the picture peg is connected with the trip, the trip is close to down the picture peg setting, the lateral wall that the riser was kept away from to the trip is provided with the butt face, the butt face sets up towards the riser slope.

Through adopting above-mentioned technical scheme, remove the mounting towards the ejector pad, the butt face supports the push pedal and removes towards the sleeve, until the push pedal towards telescopic lateral wall and trip towards the lateral wall butt of riser, trip restriction ejector pad removes towards the sleeve this moment to play the effect of locking the ejector pad.

Optionally, the mounting includes riser, lower picture peg, goes up picture peg and trip, lower picture peg and last picture peg are connected respectively at the both ends of riser, the trip sets up on last picture peg through control assembly slip, the trip moves towards or keep away from lower picture peg.

Through adopting above-mentioned technical scheme, remove the mounting towards the ejector pad, insert the ejector pad down between ejector pad and the plug, go up the picture peg and be located the ejector pad and keep away from one side of plug, control trip removes towards the ejector pad down for the ejector pad is locked between trip and riser, thereby realizes spacing to the ejector pad.

Optionally, control assembly includes kicking block, stopper, supports piece and slide bar, the tip that the riser was kept away from to the upper inserting plate is provided with the push away groove, the kicking block is connected in the bottom of push away groove through first pressure spring, the trip is connected with the connecting plate near the one end of lower picture peg on the lateral wall of kicking block butt, the connecting plate is articulated with the lateral wall of kicking block towards lower picture peg, be provided with the bullet groove on the lateral wall of kicking block towards the connecting plate, the bottom of bullet groove is connected with the stopper through the second pressure spring, be connected with the stay cord on the stopper, the length direction sliding connection of going up the picture peg is followed to the piece is provided with the installation cavity on the riser, the one end that supports the piece extends to the installation cavity and articulates there is the connecting rod, the mid portion of connecting rod articulates on the lateral wall of installation cavity, the slide bar sets up the one end that is close to first pressure spring in the kicking block, the one end that supports the piece is kept away from with the slide bar is kept away from to the one end of the piece and the slider is articulated.

Through adopting above-mentioned technical scheme, the ejector pad supports the piece of supporting on the riser for the connecting rod rotates, and the slide bar promotes and promotes the kicking block to release the push away groove, and the trip shifts out the push away groove, and the trip rotates towards lower picture peg and the lateral wall butt of riser is kept away from to the ejector pad, and the bullet groove exposes, and under the effect of second pressure spring, the stopper shifts out bullet groove and connecting plate butt, restriction trip rotates.

Optionally, be connected with the wiring tooth through the axis of rotation on the lateral wall of installation cavity, the one end and the axis of rotation fixed connection of stopper are kept away from to the stay cord, the stay cord is around establishing in the axis of rotation, the cover is equipped with the second torsional spring in the axis of rotation, sliding connection has the push rod on the lateral wall that the picture peg was kept away from to the riser, push rod and wiring tooth meshing.

By adopting the technical scheme, the top block moves away from the vertical plate, the top block drives the limiting block to move away from the vertical plate, the limiting block moves out of the spring groove, and the limiting block pulls the pull rope at the moment; when the clamping hook is required to be unlocked, the push rod is pressed, the push rod drives the rope winding teeth to rotate, the pull rope is wound, and the limiting block is pulled back to the elastic groove, so that the clamping hook is unlocked.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the first torsion spring is in a natural state, the clamping plate is buckled with the clamping block, and when the first torsion spring needs to be unlocked, one end of the clamping plate, which is far away from the clamping block, is propped against the plug, and one end of the clamping plate, which is buckled with the clamping block, is far away from the sleeve, so that the buckling relation between the clamping plate and the clamping block is relieved, the connection between the sleeve and the plug is conveniently and quickly realized, after the clamping plate is buckled with the clamping block, the movement of the clamping block is limited by the fixing piece, the possibility that the movement is generated by mistakenly touching the clamping block is reduced, and the connection stability of the clamping plate and the clamping block is improved;

2. when the push block moves towards the clamping block, the bottom of the slot moves towards the end part of the clamping plate, the spring is compressed, the sliding block moves from the horizontal part to the vertical part of the sliding groove, and the clamping plate rotates; after the buckling relation between the clamping plate and the clamping block is relieved, the sliding block moves away from the plug under the action of the first torsion spring, the pushing block moves away from the clamping block under the action of the spring, and the sliding block moves into the horizontal part of the sliding groove, so that automatic reset of the pushing block is realized;

3. the fixing piece moves towards the pushing block, the abutting surface abuts against the pushing plate to move towards the sleeve until the side wall of the pushing plate, which faces the sleeve, abuts against the side wall of the clamping hook, which faces the vertical plate, and at the moment, the clamping hook limits the pushing block to move towards the sleeve, so that the pushing block is locked;

drawings

FIG. 1 is a schematic view of the whole structure of an anti-falling buckle structure in embodiment 1 of the present application;

FIG. 2 is a schematic diagram showing the positional relationship between the latch and the latch plate in embodiment 1 according to the present application;

FIG. 3 is a schematic view showing the positional relationship between the supporting block and the plug in embodiment 1 of the present application;

FIG. 4 is a schematic view showing the positional relationship between the fixing member and the pushing block in embodiment 1 of the present application;

FIG. 5 is an enlarged view of section A for embodying the structure of the mount of FIG. 2;

FIG. 6 is a schematic view showing the positional relationship between the fixing member and the pushing block in embodiment 2 of the present application;

FIG. 7 is a schematic diagram showing the positional relationship between the top block and the hook in embodiment 2 of the present application;

fig. 8 is a schematic view showing the positional relationship between the push rod and the rope winding tooth in embodiment 2 for embodying the present application.

Reference numerals illustrate:

1. a sleeve; 2. a plug; 3. a connecting column; 4. a limit bar; 5. a limit groove; 6. a rubber ring; 7. a flat groove; 8. a clamping block; 9. a clamping plate; 10. a support block; 11. a fixing member; 12. a connection port; 13. a pushing block; 14. a slot; 15. a limiting plate; 16. a sliding port; 17. a spring; 18. a slide block; 19. a chute; 20. a push plate; 21. a support rib; 22. a riser; 23. a lower plugboard; 24. an upper plugboard; 25. inserting a tongue; 26. a hook; 27. reinforcing ribs; 28. an abutment surface; 29. pushing grooves; 30. a first compression spring; 31. a top block; 32. a connecting plate; 33. a rotating shaft; 34. a receiving groove; 35. a spring groove; 36. a second compression spring; 37. a limiting block; 38. a slide bar; 39. a pull rope; 40. abutting blocks; 41. a mounting cavity; 42. a connecting rod; 43. a connecting block; 44. a push rod; 45. rope winding teeth.

Detailed Description

The embodiment of the application discloses an anti-falling buckle structure.

Example 1

Referring to fig. 1 and 2, an anti-falling buckle structure comprises a sleeve 1, a plug 2 and a buckle body, wherein the buckle body is used for connecting the sleeve 1 and the plug 2.

Referring to fig. 1 and 2, plug 2 and sleeve 1 coaxial arrangement, plug 2 is connected with spliced pole 3 towards the one end coaxial coupling of sleeve 1, be connected with spacing 4 on spliced pole 3's the lateral wall, spacing 4 is provided with a plurality ofly, a plurality of spacing 4 circumference sets up on spliced pole 3, sleeve 1's opening is arranged towards plug 2, circumference is provided with a plurality of spacing grooves 5 on sleeve 1's the inside wall, spliced pole 3 inserts and establishes in sleeve 1, spacing 4 and spacing groove 5 grafting cooperation, the cover is equipped with rubber circle 6 on spliced pole 3, be provided with the spacing ring on spliced pole 3's the lateral wall, the spacing ring is located rubber circle 6 both sides, when spliced pole 3 inserts and establishes in sleeve 1, sleeve 1's tip and rubber circle 6 butt.

Referring to fig. 1 and 2, the buckle body includes fixture block 8, joint board 9 and fixed subassembly, fixture block 8 fixed connection is on the lateral wall of sleeve 1, fixture block 8 is kept away from plug 2 slope setting towards the lateral wall of plug 2, joint board 9 articulates on plug 2 through supporting pieces 10, supporting pieces 10 set up two, two supporting pieces 10 parallel arrangement, joint board 9 is located between two supporting pieces 10, the axial of the articulated shaft between joint board 9 and the plug 2 is perpendicular with the axial of plug 2, the length direction of joint board 9 is perpendicular with the axial of the articulated shaft between joint board 9, plug 2, the cover is equipped with first torsional spring on the articulated shaft between joint board 9 and the plug 2, joint board 9 is provided with connector 12 near the one end of sleeve 1, joint board 9 passes through connector 12 and fixture block 8 lock joint.

Referring to fig. 1 and 2, a plurality of flat grooves 7 are circumferentially provided on the side wall of the plug 2, one of the flat grooves 7 being located between two of the support blocks 10. The flat groove 7 is arranged to facilitate holding the plug 2.

Referring to fig. 2, 3 and 4, the fixed subassembly includes ejector pad 13 and mounting 11, ejector pad 13 sliding connection is at the one end that joint board 9 kept away from sleeve 1 along joint board 9's length direction, be provided with slot 14 on ejector pad 13, ejector pad 13 passes through slot 14 cover and establishes on joint board 9, slot 14's cross-sectional area is greater than joint board 9's cross-sectional area, joint board 9's end connection has two limiting plates 15, slot 14's bottom is provided with two sliding ports 16 that set up with limiting plate 15 correspondence, sliding port 16's cross-sectional area is greater than limiting plate 15's cross-sectional area, the length of sliding port 16 is less than limiting plate 15's length along joint board 9's length direction, limiting plate 15 and sliding port 16 are along joint board 9's length direction, joint board 9 is close to limiting plate 15's end connection has spring 17, spring 17 is located between two limiting plates 15, spring 17 is kept away from joint board 9's one end and is connected with slot 14 bottom.

Referring to fig. 2 and 3, a sliding block 18 is connected to a position on the side wall of the push block 13, which is close to the sleeve 1, a sliding groove 19 is arranged on the side wall of the clamping block 8, which faces the clamping plate 9, the sliding groove 19 is L-shaped, the horizontal part of the sliding groove 19 is far away from the sleeve 1, the vertical part of the sliding groove 19 is arranged towards the axis of the plug 2, and the sliding block 18 is located in the sliding groove 19 and is in sliding fit with the sliding groove.

When the spring 17 and the first torsion spring are in a natural state, the sliding block 18 is positioned in the horizontal part of the sliding groove 19, the clamping plate 9 is buckled with the clamping block 8, the push block 13 and the flat groove 7 are arranged at intervals in parallel, the clamping plate 9 and the slot 14 are arranged at intervals away from the side wall of the plug 2, and the limiting plate 15 and the sliding port 16 are arranged at intervals close to the side wall of the plug 2; when unlocking is needed, the push block 13 is pushed, the spring 17 is compressed, the sliding block 18 moves into the vertical part of the sliding groove 19 from the horizontal part of the sliding groove 19, the push block 13 moves towards the axis of the plug 2, one end, connected with the push block 13, of the clamping plate 9 is pressed towards the plug 2, one end, buckled with the clamping block 8, of the clamping plate 9 is far away from the sleeve 1 to rotate, and therefore the buckling relation between the clamping plate 9 and the clamping block 8 is relieved.

Referring to fig. 2, a push plate 20 is connected to one end of the side wall of the push block 13 away from the plug 2, which is close to the sleeve 1, a supporting rib 21 is connected between the push plate 20 and the push block 13, two vertical surfaces of the supporting rib 21 are respectively connected with the push plate 20 and the push block 13, and the push plate 20 is arranged to facilitate an operator to push the push block 13.

Referring to fig. 4 and 5, the fixing member 11 includes a riser 22, a lower insert plate 23, an insert tongue 25 and an upper insert plate 24, the lower insert plate 23 and the upper insert plate 24 are respectively connected at two ends of the riser 22, the lower insert plate 23 is located at one side of the riser 22, a reinforcing rib 27 is connected between the upper insert plate 24 and the riser 22, the reinforcing rib 27 is located at one side of the riser 22 away from the lower insert plate 23, one end of the upper insert plate 24 away from the reinforcing rib 27 is connected with a clamp 26, the clamp 26 is arranged close to the lower insert plate 23, a side wall of the clamp 26 away from the reinforcing rib 27 is provided with an abutting surface 28, the abutting surface 28 is obliquely arranged towards the riser 22, the insert tongue 25 is connected on the side wall of the riser 22 close to the clamp 26, and the insert tongue 25 is located between the lower insert plate 23 and the upper insert plate 24.

When the spring 17 is in a natural state, the clamping hook 26 faces the push block 13, the fixing piece 11 faces the push block 13, the abutting surface 28 abuts against the inclined surface on the supporting rib 21 and moves towards the sleeve 1 until the side wall of the push plate 20 facing the sleeve 1 abuts against the side wall of the clamping hook 26 facing the vertical plate 22, at this time, the lower inserting plate 23 is inserted between the push block 13 and the flat groove 7, the inserting tongue 25 is inserted in the sliding opening 16, the upper inserting plate 24 is positioned on one side of the push block 13 away from the plug 2, and at this time, the clamping hook 26 limits the push block 13 to move towards the sleeve 1, so that the effect of locking the push block 13 is achieved.

Example 2

Referring to fig. 6, the fixing member 11 includes a riser 22, a lower insert plate 23, an insert tongue 25, an upper insert plate 24, and a hook 26, where the lower insert plate 23 and the upper insert plate 24 are respectively connected to two ends of the riser 22, the lower insert plate 23, the upper insert plate 24, and the insert are all located at one side of the riser 22, the insert tongue 25 is connected to the riser 22 and located between the lower insert plate 23 and the upper insert plate 24, the lower insert plate 23, the riser 22, and the insert tongue 25 are integrally formed.

Referring to fig. 7 and 8, the end of the upper plugboard 24 far from the riser 22 is provided with a push groove 29, the bottom of the push groove 29 is connected with a top block 31 through a first compression spring 30, and a containing groove 34 is arranged on the side wall of the push groove 29 close to the lower plugboard 23 and close to the notch of the push groove 29; one end of the clamping hook 26 is inserted in the push groove 29 and is abutted to the top block 31, one end, far away from the bottom plug board 23, of the side wall, abutted to the top block 31, of the clamping hook 26 is obliquely arranged far away from the top block 31, one end, close to the bottom plug board 23, of the side wall, abutted to the top block 31, of the clamping hook 26 is connected with the connecting plate 32, the connecting plate 32 is located in the accommodating groove 34, the connecting plate 32 is hinged to the top block 31 through the rotating shaft 33, a second torsion spring is sleeved on the rotating shaft 33, one end of the second torsion spring is connected with the top block 31, and the other end of the second torsion spring is connected with the connecting plate 32.

Referring to fig. 7 and 8, a spring groove 35 is provided on a side wall of the top block 31 facing the connecting plate 32, the spring groove 35 is located on one side of the rotating shaft 33 away from the bottom of the push groove 29, the bottom of the spring groove 35 is connected with a limiting block 37 through a second pressure spring 36, one end of the limiting block 37 away from the second pressure spring 36 is set to be an inclined plane, the inclined plane on the limiting block 37 is opposite to the bottom surface of the push groove 29, and a pull rope 39 is connected to the limiting block 37.

Referring to fig. 7 and 8, a sliding hole is formed in the bottom of the spring groove 35, a sliding rod 38 is connected to the side wall of the ejector block 31, which is close to the first pressure spring 30, the sliding rod 38 is in sliding fit with the upper plug board 24 along the length direction of the sliding rod 38 through the sliding hole, a supporting block 40 is connected to the vertical plate 22 in sliding mode along the length direction of the upper plug board 24, a supporting groove for supporting the sliding of the supporting block 40 is formed in the vertical plate 22, a mounting cavity 41 is formed in the vertical plate 22, the mounting cavity 41 is communicated with the sliding hole and the supporting groove, one end of the supporting block 40 extends into the mounting cavity 41 and is hinged with a connecting rod 42, the middle portion of the connecting rod 42 is hinged to the side wall of the mounting cavity 41, one end of the connecting rod 42, which is far away from the supporting block 40, is hinged with one end of the sliding rod 38, which is far away from the ejector block 31, of the connecting rod 43 is hinged to the end of the sliding rod 38, and the connecting rod 43 is connected to the connecting rod 42 in sliding mode along the length direction of the connecting rod 42. The side wall of the installation cavity 41 is rotatably connected with a rope winding tooth 45 through a rotating shaft, the rotating shaft is rotatably connected with the side wall of the installation cavity 41, the rope winding tooth 45 is fixedly connected with the rotating shaft coaxially, one end, far away from the limiting block 37, of the pull rope 39 is fixedly connected with the rotating shaft, the pull rope 39 is wound on the rotating shaft, a third torsion spring is sleeved on the rotating shaft, a push rod 44 is slidably connected to the side wall, far away from the upper inserting plate 24, of the vertical plate 22, and the push rod 44 is meshed with the rope winding tooth 45.

Moving the fixing piece 11 towards the push block 13, inserting the lower plugboard 23 between the push block 13 and the plug 2, positioning the upper plugboard 24 on one side of the push block 13 away from the plug 2, inserting the plug tongue 25 into the sliding port 16, abutting the push block 40 on the riser 22, enabling one end, connected with the push block 40, of the connecting rod 42 to rotate away from the push block 13, enabling one end, connected with the slide rod 38, of the connecting rod 42 to rotate towards the sleeve 1, pushing the push block 31 out of the push groove 29 by the slide rod 38, moving the clamping hook 26 out of the push groove 29, rotating the clamping hook 26 towards the lower plugboard 23 and abutting the side wall, away from the riser 22, of the push block 13, moving the limiting block 37 out of the elastic groove 35 to abut the connecting block 43 under the action of the second pressure spring 36, pulling the pull rope 39 by the limiting block 37, and limiting the rotation of the clamping hook 26; when the push block 13 needs to be unlocked, the push rod 44 is pressed, the push rod 44 drives the rope winding teeth 45 to rotate, the pull rope 39 is wound up, and the limiting block 37 is pulled back to the elastic groove 35, so that the clamping hook 26 is unlocked.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (4)

1. An anti-drop buckle structure, its characterized in that: including sleeve (1), plug (2) and buckle body, the buckle body is used for connecting sleeve (1) and plug (2), the buckle body includes fixture block (8), joint board (9) and fixed subassembly, fixture block (8) are connected on the lateral wall of sleeve (1), joint board (9) are articulated on plug (2), the articulated shaft between joint board (9) and plug (2) is gone up the cover and is equipped with first torsional spring, joint board (9) are close to the one end of sleeve (1) and are provided with connector (12), joint board (9) pass through connector (12) and fixture block (8) lock joint, fixed subassembly includes ejector pad (13) and mounting (11), ejector pad (13) sliding connection is on plug (2), ejector pad (13) are used for rotating joint board (9), mounting (11) are used for restricting the removal of ejector pad (13).

The push block (13) is slidably connected to one end, far away from the sleeve (1), of the clamping plate (9) along the length direction of the clamping plate (9), a support block (10) for hinging the clamping plate (9) is connected to the plug (2), a sliding groove (19) is formed in the side wall of the support block (10), the sliding groove (19) is L-shaped, the horizontal part of the sliding groove (19) is far away from the sleeve (1), the vertical part of the sliding groove (19) is arranged towards the axis of the plug (2), a sliding block (18) is connected to the side wall of the push block (13), the sliding block (18) is located in the sliding groove (19), and the sliding block (18) is in sliding fit with the sliding groove (19);

one end, close to the sleeve (1), of the side wall, far away from the plug (2), of the push block (13) is connected with a push plate (20);

the push block (13) is provided with a slot (14), the push block (13) is sleeved on the clamping plate (9) through the slot (14), the end part, close to the limiting plate (15), of the clamping plate (9) is connected with a spring (17), and one end, far away from the clamping plate (9), of the spring (17) is connected with the bottom of the slot (14);

the clamping block (8) is obliquely arranged away from the plug (2) towards the side wall of the plug (2), when the spring (17) and the first torsion spring are in a natural state, the sliding block (18) is positioned in the horizontal part of the sliding groove (19), the clamping plate (9) is buckled with the clamping block (8), the push block (13) and the plug (2) are arranged at intervals parallel to each other, the clamping plate (9) and the slot (14) are arranged at intervals at one end, close to the sleeve (1), of the side wall, away from the plug (2), of the side wall, close to the plug (2), of the slot (14), and the clamping plate (9) is arranged at intervals at one end, close to the sleeve (1), of the side wall, close to the plug (2);

the fixing piece (11) comprises a vertical plate (22), a lower inserting plate (23) and an upper inserting plate (24), wherein the lower inserting plate (23) and the upper inserting plate (24) are respectively connected to two ends of the vertical plate (22), one end, far away from the vertical plate (22), of each inserting plate is connected with a clamping hook (26), the clamping hooks (26) are close to the lower inserting plate (23), the side wall, far away from the vertical plate (22), of each clamping hook (26) is provided with an abutting surface (28), and the abutting surfaces (28) are obliquely arranged towards the vertical plate (22);

when unlocking is needed, the push block (13) is pushed, the spring (17) is compressed, the sliding block (18) moves into the vertical part of the sliding groove (19) from the horizontal part of the sliding groove (19), the push block (13) moves towards the axis of the plug (2), one end, connected with the push block (13), of the clamping plate (9) is pressed towards the plug (2), and one end, connected with the clamping block (8), of the clamping plate (9) is far away from the sleeve (1) to rotate, so that the buckling relation between the clamping plate (9) and the clamping block (8) is relieved;

the bottom of slot (14) is provided with sliding mouth (16), mounting (11) include insert tongue (25), insert tongue (25) connect on riser (22) are close to the lateral wall of trip (26), insert tongue (25) are located between picture peg (23) and last picture peg (24) down, be connected with between push pedal (20) and push block (13) brace bar (21), when spring (17) are in nature, will trip (26) towards push block (13), will mounting (11) remove towards push block (13), inclined plane on butt brace bar (21) moves towards sleeve (1) until push pedal (20) are towards the lateral wall butt of sleeve (1) and trip (26) towards riser (22), at this moment, insert tongue (25) and insert and establish in sliding mouth (16) in, thereby push block (24) are located the effect of restriction plug (13) and are kept away from in push block (13) side (13).

2. The anti-drop snap structure of claim 1, wherein: the fixing piece (11) comprises a vertical plate (22), a lower inserting plate (23), an upper inserting plate (24) and a clamping hook (26), wherein the lower inserting plate (23) and the upper inserting plate (24) are respectively connected to two ends of the vertical plate (22), the clamping hook (26) is arranged on the upper inserting plate (24) in a sliding mode through a control assembly, and the clamping hook (26) moves towards or away from the lower inserting plate (23).

3. The anti-drop snap structure of claim 2, wherein: the control assembly comprises a top block (31), a limiting block (37), a supporting block (40) and a sliding rod (38), wherein a pushing groove (29) is formed in the end portion, far away from the vertical plate (22), of the upper inserting plate (24), the top block (31) is connected to the bottom of the pushing groove (29) through a first pressure spring (30), one end, close to the lower inserting plate (23), of the side wall, abutted to the top block (31), of the clamping hook (26) is connected with a connecting plate (32), the connecting plate (32) is hinged to the side wall, facing to the lower inserting plate (23), of the top block (31), a spring groove (35) is formed in the side wall, facing to the connecting plate (32), of the top block (31), a limiting block (37) is connected to the bottom of the spring groove (35) through a second pressure spring (36), a pull rope (39) is connected to the limiting block (37), a mounting cavity (41) is formed in the vertical plate (22) in a sliding mode along the length direction of the upper inserting plate (24), one end, close to the lower inserting plate (23) is provided with a mounting cavity (41), one end of the supporting block (40) is hinged to the side wall, close to the connecting rod (41) is hinged to the middle portion (42), the connecting rod (42) is arranged on the middle portion (42), one end of the connecting rod (42) far away from the abutting block (40) is hinged with one end of the sliding rod (38) far away from the top block (31).

4. A drop-out prevention snap structure according to claim 3, wherein: the side wall of the installation cavity (41) is rotationally connected with rope winding teeth (45) through a rotating shaft, one end, far away from a limiting block (37), of a pull rope (39) is fixedly connected with the rotating shaft, the pull rope (39) is wound on the rotating shaft, a second torsion spring is sleeved on the rotating shaft, a vertical plate (22) is far away from a push rod (44) which is connected with the side wall of the upper inserting plate (24) in a sliding mode, and the push rod (44) is meshed with the rope winding teeth (45).