Anti-loosening counter-locking screw

Abstract

The utility model discloses an anti-loose counter-locking screw, which relates to the technical field of screws, and comprises a thread sleeve and a screw, the inner side of the thread sleeve is provided with a thread groove, the outer side of the screw is provided with a thread, the thread of the screw is matched with the thread groove of the thread sleeve, the tail end of the thread sleeve is fixedly connected with a fastening assembly, the tail end of the screw is fixedly connected with a first nut, and the first nut is fixedly connected with a second nut. A plurality of anti-skid teeth are arranged on the inner side of the first nut, a plurality of limiting pieces are movably connected to the outer side of the threaded sleeve, and a control assembly is movably connected to the inner side of the threaded sleeve. According to the utility model, the control assembly is arranged, the screw penetrates into the thread sleeve through the screw, so that the moving cylinder is controlled to move in the thread sleeve, the first convex block is controlled to extrude the second convex block, the convex blocks are convex, the limiting pieces are far away from each other, the limiting pieces are more attached to the inner wall of the hole, and the limiting strips on the outer sides of the limiting pieces are inclined; and the fastening effect of the thread sleeve is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field, concretely is a kind of anti-loose lock screw. BACKGROUND

[0002] Anti-loose lock screw is a kind of specially designed fastener, its main function is when being influenced by external factors such as vibration, impact or temperature change, keep the stability of screw connection, prevent screw loosening.This screw has a wide range of applications in various machinery, equipment, building and vehicles, especially in those occasions with extremely high safety and reliability requirements.

[0003] Although existing screw fastening technology can meet the conventional fastening demand to some extent, in some specific application environment, the traditional screw still has the risk of loosening, and the usual screw fastening mode adds gasket at screw cap, this kind of mode can reduce screw loosening to some extent, but the technical means is relatively simple, after the anti-loose lock screw is penetrated through hole, the adhesion degree of the outer wall of screw and the inner wall of hole is low, so as to affect the fastening degree of screw, therefore, a kind of anti-loose lock screw is needed to solve the existing deficiency. UTILITARIAN CONTENT

[0004] The utility model aims at providing a kind of anti-loose lock screw, by the fastening assembly of being set, reduce the screw loosening caused by the vibration of fixed object;By the control component of being set, further increase the fastening effect of screw sleeve.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] The utility model is a kind of anti-loose lock screw, including screw sleeve and screw, the inside of screw sleeve is provided with thread groove, the thread of screw is matched with the thread groove of screw sleeve, the tail end of screw sleeve is fixedly connected with fastening assembly, and the tail end of screw is fixedly connected with screw cap one, the inside of screw cap one is structured with several anti-slip teeth, the outside of screw sleeve is movably connected with several limit sheets, the inside of screw sleeve is movably connected with control component, and the front end of screw is movably connected with control component.

[0007] The utility model is further provided, the fastening assembly includes screw cap two and gasket, the inside of screw cap two is structured with several anti-slip teeth, and the side of gasket is structured with several anti-slip teeth, the anti-slip teeth of gasket are engaged with the anti-slip teeth of screw cap two, the other side of gasket is fixedly connected with several friction strips, and friction strip is circular array distribution.

[0008] The utility model is further provided, the inside of screw cap two is fixedly connected with connecting column, one end of connecting column is fixedly connected to the tail end of screw sleeve, and gasket is sleeved on the outside of connecting column.

[0009] The utility model further sets up, control assembly includes mobile cylinder, protruding block one and protruding block two, protruding block one and protruding block two all present circular array distribution, protruding block one all fixedly connected in the outside of mobile cylinder, protruding block two respectively fixedly connected in the inside of limit piece, the outside of protruding block one and the outside of protruding block two are in line, mobile cylinder swing joint is in the inside of screw bush, and the front end of screw is in contact with the top end of mobile cylinder.

[0010] The utility model further sets up, the inside of screw bush is provided with a plurality of containing groove, limit piece is swing joint respectively in the inside of containing groove, and protruding block one and protruding block two are swing joint respectively in the inside of containing groove, the outside of limit piece is fixedly connected with a plurality of limit strip, and limit strip presents the inclined setting.

[0011] The utility model further sets up, control assembly still includes connecting block and reset block, connecting block and reset block all present circular array distribution, and connecting block and reset block all swing joint in the inside of screw bush, the top end of connecting block is fixedly connected respectively in the inside bottom of limit piece, the bottom of reset block is fixedly connected in the outside of mobile cylinder, the opposite side of connecting block and reset block all constructs the inclined surface, and the inclined surface of connecting block and the inclined surface of reset block swing joint.

[0012] The utility model further sets up, the inside of screw bush is fixedly connected with reset spring, and the other end of reset spring is fixedly connected in one end of mobile cylinder.

[0013] The utility model has the advantages of following:

[0014] 1, the utility model discloses a fastening assembly is set up, because the nut two and the gasket are engaged through the anti -skid tooth, help to improve the anti -skid effect of nut two and screw bush, further improve the anti -skid effect of screw bush through the friction strip of gasket other side, reduce the screw loosening caused by the fixed object vibration.

[0015] 2, the utility model discloses a control assembly is set up, through the screw spiral in -depth screw bush, thereby control mobile cylinder moves in the inside of screw bush, in this way control protruding block one extrusion protruding block two, and the protruding block is convex, therefore make limit piece away from each other, make limit piece and hole inner wall more in line with each other, and the limit strip of limit piece outside is inclined, further increase the fastening effect of screw bush. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the local section structure schematic diagram of the utility model;

[0018] Figure 3 It is the explosion structure schematic view of the utility model;

[0019] Figure 4 It is the explosion structure schematic view of the utility model Figure 3 It is the enlarged structure schematic view of A place in the utility model;

[0020] Figure 5 It is the explosion structure schematic view of the utility model Figure 3 It is the enlarged structure schematic view of B place in the utility model.

[0021] In the drawing: 1, the screw sleeve;2, the screw;3, the fastening assembly;301, the nut two;302, the gasket;4, the nut one;5, the limiting piece;6, the control assembly;601, the moving cylinder;602, the protrusion one;603, the protrusion two;604, the connecting block;605, the reset block;7, the friction strip;8, the connecting column;9, the containing groove;10, the limiting strip;11, the reset spring. Specific implementation

[0022] The technical scheme in the utility model embodiment will be clearly and completely explained in combination with embodiments and the drawing of the specification.

[0023] As Figures 1-5 shown, the utility model provides a technical scheme: a kind of anti-loose lock screw, including screw sleeve 1 and screw 2, the inside of screw sleeve 1 is equipped with thread groove, and the thread of screw 2 is compatible with the thread groove of screw sleeve 1, the tail end of screw sleeve 1 is fixedly connected with fastening assembly 3, and the tail end of screw 2 is fixedly connected with nut one 4, the inside of nut one 4 is structured with several anti-slip teeth, the outside of screw sleeve 1 is movably connected with several limiting pieces 5, the inside of screw sleeve 1 is movably connected with control assembly 6, and the front end of screw 2 is movably connected with control assembly 6.

[0024] As Figure 1 , Figure 2 and Figure 3 As shown in the drawing, fastening assembly 3 includes nut two 301 and gasket 302, the inside of nut two 301 is structured with several anti-slip teeth, and one side of gasket 302 is structured with several anti-slip teeth, the anti-slip teeth of gasket 302 are engaged with the anti-slip teeth of nut two 301, the other side of gasket 302 is fixedly connected with several friction strips 7, and friction strip 7 is circular array distribution, the inside of nut two 301 is fixedly connected with connecting column 8, one end of connecting column 8 is fixedly connected to the tail end of screw sleeve 1, and gasket 302 is sleeved on the outside of connecting column 8.

[0025] Since nut two 301 and gasket 302 are engaged by anti-slip teeth, it helps to improve the anti-slip effect of nut two 301 and screw sleeve 1, further improve the anti-slip effect of screw sleeve 1 by friction strip 7 on the other side of gasket 302, reduce the screw loosening caused by fixed object vibration.

[0026] As shown in Figure 1 、 Figure 4 and Figure 5 , the control assembly 6 comprises a moving cylinder 601, a bump one 602 and a bump two 603, the bump one 602 and the bump two 603 are both circularly arranged, the bump one 602 is fixedly connected to the outer side of the moving cylinder 601, the bump two 603 is fixedly connected to the inner side of the limiting sheet 5, the outer side of the bump one 602 is in close contact with the outer side of the bump two 603, the moving cylinder 601 is movably connected to the inner side of the screw sleeve 1, and the front end of the screw 2 abuts against the top end of the moving cylinder 601, a plurality of accommodating grooves 9 are formed in the outer side of the screw sleeve 1, the limiting sheet 5 is movably connected to the inner side of the accommodating groove 9, and the bump one 602 and the bump two 603 are movably connected to the inner side of the accommodating groove 9, a plurality of limiting strips 10 are fixedly connected to the outer side of the limiting sheet 5, and the limiting strips 10 are obliquely arranged, the control assembly 6 further comprises a connecting block 604 and a reset block 605, the connecting block 604 and the reset block 605 are both circularly arranged, and the connecting block 604 and the reset block 605 are movably connected to the inner side of the screw sleeve 1, the top end of the connecting block 604 is fixedly connected to the inner bottom end of the limiting sheet 5, the bottom end of the reset block 605 is fixedly connected to the outer side of the moving cylinder 601, the opposite sides of the connecting block 604 and the reset block 605 are both provided with chamfers, and the chamfers of the connecting block 604 and the reset block 605 are movably connected, a reset spring 11 is fixedly connected to the inner side of the screw sleeve 1, and the other end of the reset spring 11 is fixedly connected to one end of the moving cylinder 601.

[0027] The screw 2 is screwed into the screw sleeve 1, thereby controlling the movement of the moving cylinder 601 in the screw sleeve 1, so as to control the extrusion of the bump one 602 on the bump two 603, the bump is convex, so that the limiting sheets 5 are away from each other, that is, the limiting sheets 5 are more closely attached to the inner wall of the hole, and the limiting strips 10 on the outer side of the limiting sheet 5 are obliquely arranged, further increasing the fastening effect of the screw sleeve 1, in addition, through the cooperation of the connecting block 604 and the reset block 605, when the screw 2 is away from the moving cylinder 601, the reset block 605 resets the connecting block 604 under the action of the reset spring 11, thereby resetting the limiting sheet 5.

[0028] Working principle: in use, first, the sleeve 1 is inserted into the hole inside, so that the gasket 302 with the locking surface, and then the screw 2 is inserted into the inside of the sleeve 1, turn the nut 4, drive the screw 2 to the inside of the sleeve 1 rotation, with the screw 2 into the inside of the sleeve 1, the screw 2 on the one end of the moving cylinder 601 extrusion, so that the moving cylinder 601 in the inside of the sleeve 1 moves, thereby extruding the reset spring 11, the movement of the moving cylinder 601, drive the synchronous movement of the protruding block one 602, at this moment the protruding block one 602 will the protruding block two 603 outwards, synchronous with the limiting piece 5 outwards, so that the limiting piece 5 outside the limiting strip 10 and the hole wall more closely, at the same time, the connecting block 604 with the limiting piece 5 synchronous movement, because of the movement of the moving cylinder 601, so that the reset block 605 synchronous movement, thereby making the connecting block 604 of the chamfer and the reset block 605 of the chamfer away from each other, thereby making the connecting block 604 has the space of movement, therefore, when the screw 2 reverse rotation, under the action of the reset spring 11, so that the moving cylinder 601 reset, reset block 605 close to the connecting block 604 moves, thereby pushing the connecting block 604 to the inside of the sleeve 1, so that the limiting piece 5 towards the inside of the containing groove 9 moves, with, the screw 2 into the inside of the sleeve 1, the friction strip 7 outside the gasket 302 and the locking surface closely, and the nut 4 of the anti slip teeth and the opposite side of the locking surface.

Claims

1. A locking screw, comprising a sleeve (1) and a screw (2), characterized in that: The inner side of the screw sleeve (1) is provided with a thread groove, the thread of the screw (2) is matched with the thread groove of the screw sleeve (1), the tail end of the screw sleeve (1) is fixedly connected with a fastening assembly (3), and the tail end of the screw (2) is fixedly connected with a nut (4), the inner side of the nut (4) is provided with a plurality of anti-skid teeth, the outer side of the screw sleeve (1) is movably connected with a plurality of limiting pieces (5), the inner side of the screw sleeve (1) is movably connected with a control assembly (6), and the front end of the screw (2) is movably connected with the control assembly (6).

2. A locking screw according to claim 1, wherein: The fastening assembly (3) comprises a nut (301) and a gasket (302), the inner side of the nut (301) is provided with a plurality of anti-skid teeth, one side of the gasket (302) is provided with a plurality of anti-skid teeth, the anti-skid teeth of the gasket (302) are engaged with the anti-skid teeth of the nut (301), the other side of the gasket (302) is fixedly connected with a plurality of friction strips (7), and the friction strips (7) are circularly arranged.

3. A tamper-proof locking screw as claimed in claim 2, wherein: The inner side of the nut (301) is fixedly connected with a connecting column (8), one end of the connecting column (8) is fixedly connected to the tail end of the screw sleeve (1), and the gasket (302) is sleeved on the outer side of the connecting column (8).

4. A tamper-proof locking screw as claimed in claim 3, wherein: The control assembly (6) comprises a moving cylinder (601), a protrusion (602) and a protrusion (603), the protrusions (602) and (603) are circularly arranged, the protrusions (602) are fixedly connected to the outer side of the moving cylinder (601), the protrusions (603) are fixedly connected to the inner side of the limiting pieces (5), the outer side of the protrusion (602) is attached to the outer side of the protrusion (603), the moving cylinder (601) is movably connected to the inner side of the screw sleeve (1), and the front end of the screw (2) abuts against the top end of the moving cylinder (601).

5. A tamper-proof locking screw as claimed in claim 4, wherein: The outer side of the screw sleeve (1) is provided with a plurality of accommodating grooves (9), the limiting pieces (5) are movably connected to the inner sides of the accommodating grooves (9), and the protrusions (602) and (603) are movably connected to the inner sides of the accommodating grooves (9), the outer side of the limiting piece (5) is fixedly connected with a plurality of limiting strips (10), and the limiting strips (10) are arranged in an inclined manner.

6. A tamper-proof locking screw as claimed in claim 5, wherein: The control assembly (6) further comprises a connecting block (604) and a reset block (605), the connecting block (604) and the reset block (605) are circularly arranged, and the connecting block (604) and the reset block (605) are movably connected to the inner side of the screw sleeve (1), the top end of the connecting block (604) is fixedly connected to the inner bottom end of the limiting piece (5), the bottom end of the reset block (605) is fixedly connected to the outer side of the moving cylinder (601), and the opposite sides of the connecting block (604) and the reset block (605) are provided with inclined surfaces, and the inclined surfaces of the connecting block (604) and the reset block (605) are movably connected.

7. A tamper-proof locking screw as claimed in claim 6, wherein: The inner side of the screw sleeve (1) is fixedly connected with a reset spring (11), and the other end of the reset spring (11) is fixedly connected to one end of the moving cylinder (601).

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