Theft-proof screw

Abstract

The utility model relates to the technical field of screws, in particular to an anti-theft screw. According to the technical scheme, the screw comprises a screw body, a wedge-shaped screw head is arranged at one end of the screw body, a pressing and covering ring is fixedly installed at the end, away from the wedge-shaped screw head, of the screw body, a rotating assembly is arranged at the end, away from the wedge-shaped screw head, of the screw body and used for twisting the screw body to rotate, and an inserting rod is movably installed in the rotating assembly; and the inserting rod is used for locking the inserting part of the rotating assembly and the screw. The rotating assembly is locked and fixed to the end of the screw through the inserting rod, the screw can be driven to rotate by rotating the rotating assembly, the screw can be conveniently disassembled and assembled, after the inserting rod is unlocked, the rotating assembly can be disassembled from the end of the screw, and at the moment, the inner wall of the exposed circular groove structure at the end of the screw has no stress point; the screw is difficult to rotate by using a tool, so that the risk that the screw is disassembled by a thief is reduced, and the anti-theft effect of the screw is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field especially, it is a kind of screw for preventing theft. BACKGROUND

[0002] Screw is a common mechanical part, is used for connecting and fastening the various components of equipment, generally by screw cap, screw rod and peg head composition.Especially anti-theft screw, is a special design fastener, mainly used to prevent fixed facilities from being stolen or being unauthorized disassembly, this type of screw adopts non-standard, special-shaped head (screw cap), such as internal pentagonal, internal plum blossom, Y type, triangle and so on, these shapes cannot be operated with ordinary screwdriver, wrench and other tools, must use the special tool matched with it to be inserted into the slot or hole of screw head, realizes rotation and loosens.

[0003] But in actual use process, because the type of non-standard, special-shaped screw cap is limited, if thief presses plasticine into the special-shaped slot in screw cap, the shape of matched tool can be easily obtained, then disassembly tool matched with screw cap can be manufactured at low cost, increase the risk that screw is disassembled by thief, obviously reduce the anti-theft effect of screw;Therefore, the present application proposes a kind of screw for preventing theft, which can reduce the risk that screw is disassembled by thief. UTILITY MODEL CONTENT

[0004] The utility model aims at the problem that the tool for disassembling screw can be manufactured at low cost in the background art, increases the risk that screw is disassembled by thief, proposes a kind of screw for preventing theft, which can reduce the risk that screw is disassembled by thief.

[0005] The technical scheme of the utility model: a kind of screw for preventing theft, including screw, the one end of the screw is equipped with wedge-shaped peg head, the one end of the screw away from wedge-shaped peg head is fixedly installed with the pressure cover ring, still include:

[0006] Rotary component, the rotary component is set to the one end of screw away from wedge-shaped peg head, the rotary component is used to twist screw and rotate;

[0007] Inserting rod, the inserting rod is movably installed in rotary component interior, the inserting rod is used to lock the inserting part of rotary component and screw.

[0008] Optionally, the rotary component includes docking round seat, the docking round seat is set to the one end of screw, the hexagonal rotating block is fixedly installed on the docking round seat, the inserting rod is movably installed in docking round seat interior.

[0009] Optionally, the top end of the butt joint round seat is drilled with a limiting slot, a plurality of circular channels communicated with the limiting slot are drilled on the outer side wall of the butt joint round seat, the insertion rod is movably inserted into the matching circular channel, and one end of the insertion rod extends into the limiting slot.

[0010] Optionally, the hexagonal rotating block is fixedly installed with a positioning plate, an adjusting screw is threadedly installed on the positioning plate, and a steel ball is fixedly installed at one end of the adjusting screw and located in the limiting slot.

[0011] Optionally, the two distal ends of the insertion rod are provided with hemispherical heads, and the steel ball is in close contact with the matching hemispherical head.

[0012] Optionally, an annular limiting plate is fixedly installed on the outer wall of the insertion rod, an elastic rubber sleeve is fixedly installed on the annular limiting plate, and one end of the elastic rubber sleeve is in close contact with the inner side wall of the limiting slot.

[0013] Optionally, a circular butt joint groove is drilled at one end of the screw away from the wedge-shaped nail head, and a plurality of circular insertion grooves are drilled on the inner side wall of the circular butt joint groove.

[0014] Optionally, a rubber protective ring is movably inserted into the circular butt joint groove, a plurality of circular rubber blocks are arranged on the outer side wall of the rubber protective ring, and the circular rubber blocks are inserted into the matching circular insertion grooves and are in close clamping connection with the same.

[0015] Compared with the prior art, the application has at least one of the following beneficial technical effects: the insertion rod is used to lock and fix the rotating assembly at the end of the screw, the rotating assembly can drive the screw to rotate by being rotated, the screw can be conveniently disassembled and assembled, when the insertion rod is unlocked, the rotating assembly can be disassembled from the end of the screw, the inner wall of the exposed circular groove structure of the end of the screw has no stress point, and it is difficult to use a tool to rotate the screw, the risk of disassembly of the stolen screw is reduced, and the anti-theft effect of the screw is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure schematic view of the utility model is given;

[0017] Figure 2 The assembly schematic view of the rubber protective ring and the screw of the utility model is given;

[0018] Figure 3 The rotating assembly structure schematic view of the utility model is given;

[0019] Figure 4 The butt joint round seat structure schematic view of the utility model is given;

[0020] Figure 5 The insertion rod structure schematic view of the utility model is given.

[0021] Reference numerals: 1, screw; 11, circular butt joint groove; 12, circular insertion groove;

[0022] 2, rubber protection ring; 21, circular rubber block;

[0023] 3, rotating assembly;

[0024] 31, butt joint circular seat; 311, circular channel; 312, limiting groove;

[0025] 32, hexagonal rotating block;

[0026] 33, positioning plate; 331, adjusting screw rod; 332, steel ball;

[0027] 34, insertion rod; 341, semispherical head; 342, annular limiting plate; 343, elastic rubber sleeve;

[0028] 4, wedge-shaped nail head;

[0029] 5, pressure covering ring. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0031] EMBODIMENT

[0032] As Figures 1-5 shown in the utility model provide a kind of for preventing theft screw, including screw 1, the one end of screw 1 is equipped with the wedge-shaped nail head 4 integrally formed with it, when screw 1 rotates, wedge-shaped nail head 4 can quickly drill on part, ensure that screw 1 can be quickly rotated into part interior;The one end of screw 1 away from wedge-shaped nail head 4 is equipped with circular butt joint groove 11, circular butt joint groove 11 is inserted with rotating assembly 3, rotating assembly 3 is movably installed with several insertion rods 34, by the adjusting structure installed on rotating assembly 3, insertion rod 34 can be pushed to move horizontally, when insertion rod 34 is inserted into the circular insertion groove 12 inside the inner wall of circular butt joint groove 11, rotating assembly 3 can be locked and fixed at the end of screw 1, when rotating assembly 3 is rotated, screw 1 can be rotated, and screw 1 can be disassembled;When screw 1 is installed, rotating assembly 3 is pulled out from circular butt joint groove 11, at this time, the inner wall of circular butt joint groove 11 has no stress point, and it is difficult to use tool to rotate screw 1, so that the anti-theft effect is improved.

[0033] Further, the rotating assembly 3 comprises a butt joint round seat 31, a hexagonal rotating block 32 is fixedly installed at the end of the butt joint round seat 31 away from the screw 1, when the butt joint round seat 31 is inserted into the circular butt joint groove 11, the butt joint round seat 31 is locked and fixed in the circular butt joint groove 11 through the insertion rod 34, at this time, the hexagonal rotating block 32 is clamped and rotated by using a tool, the screw 1 can be stably rotated, and it is ensured that the screw 1 can be stably screwed into the part.

[0034] Secondly, a plurality of circular insertion grooves 12 are opened on the inner side wall of the circular butt joint groove 11, hemispherical heads 341 are arranged at the two ends of the insertion rod 34 away from each other, when the end of the insertion rod 34 located in the butt joint round seat 31 is subjected to downward pressure, the insertion rod 34 moves horizontally and is inserted into the corresponding circular insertion groove 12, the butt joint round seat 31 can be locked and fixed in the circular butt joint groove 11, when the butt joint round seat 31 is subjected to a torsion, the screw 1 can be rotated, and the stability when the screw 1 is twisted is effectively improved.

[0035] Further, a limiting groove 312 is opened at the top end of the butt joint round seat 31, a plurality of circular channels 311 communicating with the limiting groove 312 are opened on the outer side wall of the butt joint round seat 31, the insertion rod 34 is movably installed in the matching circular channel 311, the hemispherical head 341 at one end of the insertion rod 34 extends into the limiting groove 312; a positioning plate 33 is fixedly installed on the hexagonal rotating block 32, an adjusting screw 331 is threadedly installed on the positioning plate 33, a steel ball 332 is fixedly installed at one end of the adjusting screw 331 and located in the limiting groove 312, the steel ball 332 is in close contact with the hemispherical head 341 arranged below, when the adjusting screw 331 is rotated and the steel ball 332 moves downward, the steel ball 332 can push the insertion rod 34 to move horizontally, and the insertion rod 34 can be conveniently adjusted in the horizontal direction.

[0036] Secondly, an annular limiting plate 342 is fixedly installed on the outer wall of the insertion rod 34, an elastic rubber sleeve 343 is fixedly installed on the annular limiting plate 342, one end of the elastic rubber sleeve 343 is in close contact with the inner side wall of the limiting groove 312, when the insertion rod 34 is inserted into the circular insertion groove 12, the elastic rubber sleeve 343 is compressed and tightened, when the adjusting screw 331 is rotated and the steel ball 332 moves upward, the steel ball 332 no longer exerts pressure on the insertion rod 34, at this time, the elastic rubber sleeve 343 in the compressed state recovers to the expanded state, and then the insertion rod 34 can be pushed to move into the limiting groove 312, the insertion rod 34 can be conveniently pulled out of the circular insertion groove 12, and then the locking and fixing of the butt joint round seat 31 can be released, and the rotating assembly 3 can be conveniently detached from the screw 1.

[0037] It is worth mentioning that when the rotating assembly 3 is disassembled, the rubber protection ring 2 can be installed in the circular butt joint groove 11. The outer side wall of the rubber protection ring 2 is provided with a plurality of circular rubber blocks 21. Since the hardness of the rubber protection ring 2 is low, it is convenient to press it into the circular butt joint groove 11. At this time, the circular rubber blocks 21 are embedded in the notch of the matching circular insertion groove 12, which can seal and protect the circular insertion groove 12, reduce the probability of oil entering the inside of the circular insertion groove 12, and avoid the insertion of the insertion rod 34 being hindered by the adhesion of a large amount of oil in the inside of the circular insertion groove 12.

[0038] In this embodiment, first, when the screw 1 is installed, the rubber protection ring 2 is taken out from the circular butt joint groove 11, and then the butt joint circular seat 31 is inserted into the circular butt joint groove 11. The screwdriver is used to rotate the adjusting screw 331, and then the steel ball 332 is moved downward. When the steel ball 332 exerts pressure on the hemispherical head 341 at the end of the insertion rod 34, since the insertion rod 34 is movably inserted into the circular channel 311, the insertion rod 34 can be limited in the vertical direction. During the downward movement of the steel ball 332, the insertion rod 34 can be pushed to move laterally, so as to be pushed into the circular insertion groove 12. When the insertion rod 34 is inserted into the inside of the circular insertion groove 12, the butt joint circular seat 31 can be locked and fixed in the inside of the circular butt joint groove 11, so as to improve the firmness of the connection between the rotating assembly 3 and the screw 1. At this time, rotating the hexagonal rotating block 32 can drive the screw 1 to rotate. When the screw 1 rotates, the wedge-shaped nail head 4 can drill a small hole in the part, so as to facilitate the screwing of the screw 1 into the inside of the part. At this time, the pressure covering ring 5 is pressed on the outside of the part, so as to ensure that the two parts assembled as a whole can be firmly connected.

[0039] When the screw 1 is installed, the adjusting screw 331 is rotated and the steel ball 332 is moved upward, so as to release the limitation of the insertion rod 34 in the horizontal direction. At this time, the insertion rod 34 is pushed by the elastic rubber sleeve 343 to move into the limiting groove 312, so as to be pulled out of the circular insertion groove 12. When the end of the insertion rod 34 is moved out of the circular insertion groove 12, the locking and fixing of the butt joint circular seat 31 is released, and then the rotating assembly 3 can be pulled upward, so as to be disassembled from the end of the screw 1. When the rotating assembly 3 is disassembled, the end of the screw 1 has no nut structure, and the inner side wall of the circular butt joint groove 11 exposed at the end has no stress point, so it is difficult to use tools to disassemble the screw 1. At this time, if the thief wants to disassemble the screw 1, he needs to make the same tool as the rotating assembly 3. Not only the manufacturing cost is high, but also after the rotating assembly 3 is taken down, the thief is difficult to obtain the prototype for replication, so as to reduce the risk of disassembling the screw 1 by the thief, and effectively improve the anti-theft effect of the screw 1.

[0040] The above specific embodiments are only several optional embodiments of the present application, and based on the technical scheme of the present application and the related enlightenment of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A screw for anti-theft purposes, comprising a screw (1), one end of which is provided with a wedge-shaped head (4), and a retaining ring (5) fixedly installed at the end of the screw (1) away from the wedge-shaped head (4), characterized in that, It also includes: A rotating assembly (3) is disposed at one end of the screw (1) away from the wedge head (4), and the rotating assembly (3) is used to twist the screw (1) to rotate; Insert rod (34), which is movably installed inside the rotating assembly (3), is used to lock the insertion part of the rotating assembly (3) and the screw (1).

2. The anti-theft screw according to claim 1, characterized in that, The rotating assembly (3) includes a docking seat (31), which is located at one end of the screw (1). A hexagonal rotating block (32) is fixedly installed on the docking seat (31), and the insertion rod (34) is movably installed inside the docking seat (31).

3. A screw for anti-theft purposes according to claim 2, characterized in that, The top of the docking seat (31) has a limiting groove (312) and the outer side wall of the docking seat (31) has several circular channels (311) that communicate with the limiting groove (312). The insertion rod (34) is movably inserted into the matching circular channel (311) and one end of the insertion rod (34) extends into the limiting groove (312).

4. A screw for anti-theft purposes according to claim 3, characterized in that, A positioning plate (33) is fixedly installed on the hexagonal rotating block (32), and an adjusting screw (331) is threadedly installed on the positioning plate (33). A steel ball (332) is fixedly installed at one end of the adjusting screw (331) inside the limiting groove (312).

5. A screw for anti-theft purposes according to claim 4, characterized in that, Both ends of the insert (34) are provided with hemispherical heads (341), and the steel ball (332) is in close contact with the matching hemispherical head (341).

6. A screw for anti-theft purposes according to claim 5, characterized in that, An annular limiting plate (342) is fixedly installed on the outer wall of the insertion rod (34), and an elastic rubber sleeve (343) is fixedly installed on the annular limiting plate (342). One end of the elastic rubber sleeve (343) is in close contact with the inner wall of the limiting groove (312).

7. A screw for anti-theft purposes according to claim 1, characterized in that, The screw (1) has a circular mating groove (11) at one end away from the wedge head (4), and several circular slots (12) are carved on the inner side wall of the circular mating groove (11).

8. A screw for anti-theft purposes according to claim 7, characterized in that, A rubber protective ring (2) is movably inserted into the circular docking groove (11). Several circular rubber blocks (21) are provided on the outer side wall of the rubber protective ring (2). The circular rubber blocks (21) are inserted into the matching circular slots (12) and are tightly engaged with them.

Images