CN111457000A

CN111457000A - Anti-theft nut

Info

Publication number: CN111457000A
Application number: CN202010362089.1A
Authority: CN
Inventors: 胡仲乔; 成权其
Original assignee: Ningbo Jinhai Instrument Co ltd
Current assignee: Ningbo Jinhai Instrument Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-07-28
Anticipated expiration: 2040-04-30
Also published as: CN111457000B

Abstract

The invention relates to an anti-theft nut, which comprises an inner sleeve body (1) with an inner wall provided with an internal thread and an outer shell (2), and is characterized in that: the utility model discloses a locking sleeve, including shell body (2), shell body (1) is outer including the activity sets up, be equipped with two at least first constant head tank (11) on the interior sleeve body (1), be equipped with two at least first constant head tank (21) that can insert aforementioned two at least first constant head tank respectively in shell body (2), still be equipped with locking passageway (12) with first constant head tank intercommunication in interior sleeve body (1), this locking passageway (12) activity is equipped with locking round pin (3), be equipped with in interior sleeve body (1) and drive locking round pin first driving piece (4) towards the first direction removal in the locking passageway, still be equipped with second driving piece (5) that can drive locking round pin (3) remove towards the second direction in locking passageway (12), the second direction is opposite with the first direction. The invention can realize the anti-theft function, is convenient to dismantle and does not need to damage the structure of the nut.

Description

Anti-theft nut

Technical Field

The invention relates to an anti-theft nut.

Background

At present, the nut used for fastening is widely applied and is visible everywhere, but the installation and the disassembly of the common nut are easy, so that the fixed installation of various electric power equipment and mechanical equipment in some special places is easily damaged by lawless persons if the common nut is used for fixing, although some anti-theft nuts are provided at present, the existing anti-theft nuts can not only prevent the lawless persons but also prevent the users from self, and the nut can not be easily removed by the users, and the nut can be realized by adopting a destructive mode, so that the inconvenience is caused.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the anti-theft nut which is convenient to disassemble and does not need to damage the structure of the nut in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an anti-theft nut, is equipped with the internal screw thread inner skleeve body including the inner wall to and the shell body, its characterized in that of the cover is established at the internal skleeve body of endotheca: the outer shell is movably arranged outside the inner sleeve, the inner sleeve is provided with at least two first positioning grooves, at least two first positioning pins which can be respectively inserted into the at least two first positioning grooves are arranged in the outer shell, a locking channel communicated with the first positioning grooves is also arranged in the inner sleeve, a locking pin is arranged in the locking channel, and the locking pin can move in the locking channel; the inner sleeve body is internally provided with a first driving piece which can drive the locking pin to move towards the first direction in the locking channel, when the locking pin moves to the first positioning groove under the driving of the first driving piece, the locking pin can prevent the first positioning pin from being inserted into the first positioning groove, and at the moment, the inner sleeve body cannot rotate along with the outer shell body; in addition, still including the second driving piece that can drive the locking round pin and remove towards the second direction in the locking passageway, the second direction is opposite with the first direction, and the drive power of second driving piece drive locking round pin is greater than the drive power of first driving piece drive locking round pin, and when the locking round pin shifted out first locating slot under the drive of second driving piece, first locating pin can insert first locating slot, and shell body and inner sleeve body cooperation this moment, inner sleeve physical stamina are rotatory along with the shell body.

As a better implementation scheme, the locking pin is a metal piece or a magnet, and the first driving piece is a magnet capable of attracting the locking pin to move towards the direction of the first driving piece; the second driving piece is also a magnet capable of attracting the locking pin to move towards the direction of the second driving piece, and the magnetic force of the second driving piece attracting the locking pin is greater than the magnetic force of the first driving piece attracting the locking pin.

Preferably, the second driving member is a ferromagnetic member and is disposed outside the housing.

In order to avoid the locking pin from sliding out of the locking channel, a gear column for preventing the locking pin from excessively moving towards the second direction is arranged in the locking channel.

The locking channel is obliquely arranged on the inner sleeve body, an opening communicated with the locking channel is formed in the outer portion of the inner sleeve body, and the gear column is located in the opening.

The two first positioning grooves are symmetrically arranged at the top of the inner sleeve body, and correspondingly, the two first positioning pins are also arranged; the locking channel, the locking pin, the first driving piece and the gear column are arranged beside each first positioning groove in a matched mode.

The second driving piece is the U type, perhaps the shell is equipped with U type unlocking piece outward, the second driving piece sets up two tip inner walls at U type unlocking piece to it is relative with the opening on the inner skleeve body.

The inner sleeve body is provided with at least two second positioning grooves, the outer shell is internally provided with at least two second positioning pins which can be respectively inserted into the at least two second positioning grooves, and the second positioning grooves and the first positioning grooves are arranged in a staggered manner; the second positioning pin and the first positioning pin are the same in length, or the second positioning pin is shorter in length than the first positioning pin.

The inner sleeve body is a hollow cylinder, and the outer wall of the outer shell is provided with an outer hexagonal or outer octagonal bearing surface.

And a sealing ring is arranged between the inner wall of the lower end of the outer shell and the outer wall of the lower end of the inner sleeve body.

Compared with the prior art, the invention has the advantages that: after the nut is installed, the locking pin moves into the first positioning groove under the driving of the first driving piece, the locking pin can prevent the first positioning pin on the outer shell from being inserted into the first positioning groove on the inner sleeve body, the inner sleeve body cannot rotate together with the outer shell, and the nut is locked, so that the characteristic of undetachable is achieved, and the nut has an obvious anti-theft effect; when the nut is dismantled to needs, only need take the second driving piece, move towards the second direction in the locking passageway through second driving piece drive locking round pin, when the locking round pin shifts out first locating slot under the drive of second driving piece, first locating pin on the shell body can insert the first locating slot on the inner skleeve body, shell body and inner skleeve body cooperation this moment, inner skleeve physical stamina is rotatory along with the shell body, can realize unscrewing of nut, screw up, it is convenient to adjust and demolish the nut, it is more convenient when especially demolising the nut, need not to destroy nut self structure.

Drawings

Fig. 1 is a schematic structural diagram of an antitheft nut according to an embodiment of the present invention.

Fig. 2 is an exploded view of the anti-theft nut according to the embodiment of the present invention.

Fig. 3 is a structural view of an outer case in the embodiment of the present invention.

Fig. 4 is a partial sectional view (adjustment state) of the antitheft nut in the embodiment of the present invention.

Fig. 5 is a partial sectional view (locked state) of the antitheft nut in the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

The antitheft nut shown in fig. 1 to 5 comprises an inner sleeve body 1 which is hollow inside, provided with internal threads on the inner wall and is substantially cylindrical in shape, and an outer shell 2 which is sleeved outside the inner sleeve body, wherein the outer shell 2 is hollow inside, the outer wall of the outer shell 2 is provided with an outer hexagonal or outer octagonal bearing surface, the outer shell 2 is movably arranged outside the inner sleeve body 1, and a sealing ring 7 is arranged between the inner wall of the lower end of the outer shell 2 and the outer wall of the lower end of the inner sleeve body 1; the top of the inner sleeve body 1 is provided with two first positioning grooves 11 which are symmetrically arranged and two second positioning grooves 13 which are symmetrically arranged, the two second positioning grooves 13 and the two first positioning grooves 11 are arranged in a staggered mode, and the connecting line of the two second positioning grooves 13 is perpendicular to the connecting line of the two first positioning grooves 11; the top of the inner wall of the outer shell 2 is provided with two first positioning pins 21 which can be respectively inserted into the two first fixed grooves, and two second positioning pins 22 which can be respectively inserted into the two second fixed grooves 13. The second positioning pin 22 and the first positioning pin 21 have the same length, and the diameter of the second positioning pin 22 is larger than that of the first positioning pin 21.

In this embodiment, a locking channel 12 communicated with the first positioning groove 11 is arranged in the inner sleeve body 1 beside each first positioning groove 11 in a matching manner, a locking pin 3 is arranged in the locking channel 12, and the locking pin 3 can move in the locking channel 12; meanwhile, a first driving piece 4 capable of driving the locking pin 3 to move towards the first direction in the locking channel 12 is arranged in the inner sleeve body 1 beside each first positioning groove 11 in a matched mode, when the locking pin 3 moves into the first positioning groove 11 under the driving of the first driving piece 4, the locking pin 3 can prevent the first positioning pin 21 from being inserted into the first positioning groove 11, the second positioning pin 22 and the first positioning pin 21 are the same in length, the second positioning pin 22 can not be inserted into the second positioning groove 13, at the moment, the inner sleeve body 1 is separated from the outer shell body 2, and the inner sleeve body 1 cannot rotate together with the outer shell body 2; in addition, the locking mechanism further comprises a second driving piece 5 capable of driving the locking pin 3 to move in the locking channel 12 towards a second direction, the second direction is opposite to the first direction, when the locking pin 3 moves out of the first positioning groove 11 under the driving of the second driving piece, the first positioning pin 21 can be inserted into the first positioning groove 11, the second positioning pin 22 can also be inserted into the second positioning groove 13, at the moment, the outer shell 2 is completely matched with the inner sleeve body 1, and the inner sleeve body 1 can rotate along with the outer shell 2.

The locking pin 3 in this embodiment may be a metal piece or a magnet, and the first driving member 4 is a magnet capable of attracting the locking pin 3 to move toward its own direction, and the first driving member 4 is embedded in the inner sleeve body 1; the second driving member 5 is also a magnet capable of attracting the locking pin 3 to move towards the direction of the second driving member 5, the magnetic force of the second driving member 5 attracting the locking pin 3 is greater than the magnetic force of the first driving member 4 attracting the locking pin 3, and the second driving member 5 is preferably a strong magnet and is arranged outside the outer shell 2; the second driving member 5 can be a U-shaped strong magnet, or a U-shaped unlocking member 8 can be arranged outside the outer shell 2, and the second driving member 5 is directly arranged on the inner walls of two end parts of the U-shaped unlocking member 8 and is opposite to the opening 14 on the inner sleeve body 1. The locking channel 12 is obliquely arranged on the inner sleeve body 1, an opening 14 communicated with the locking channel 12 is formed in the outer part of the inner sleeve body 1, and a gear position column 6 for preventing the locking pin 3 from sliding out of the locking channel 12 from the opening 14 is arranged in the opening 14.

The use method and the working principle of the anti-theft nut in the embodiment are as follows: when the second driving piece 5 is placed outside the outer casing 2, because the magnetic force that the second driving piece 5 attracts the locking pin 3 is greater than the magnetic force that the first driving piece 4 attracts the locking pin 3, at this moment, the locking pin 3 moves out of the first positioning groove 11 under the drive of the second driving piece 5, press down the outer casing 2 at this moment, the first positioning pin 21 on the outer casing 2 is inserted into the first positioning groove 11 on the inner sleeve body 1, the second positioning pin 22 on the outer casing 2 is also inserted into the second positioning groove 13 on the inner sleeve body 1, at this moment, the outer casing 2 and the inner sleeve body 1 are completely matched, the inner sleeve body 1 can rotate together with the outer casing 2, and the adjustment of screwing or unscrewing the nut is realized. After the nut installation finishes, as long as with second driving piece 5, with shell body 2 upwards lifting, locking round pin 3 loses the magnetic attraction of second driving piece this moment, only the magnetic attraction of first driving piece, locking round pin 3 can be in first constant head tank 11 of automatic movement under the drive of first driving piece 4, locking round pin 3 can prevent first constant head pin 21 on the shell body to insert in the first constant head tank 11 on the interior cover barrel 1 this moment, because second positioning pin 22 is the same with first positioning pin 21 length, second positioning pin 22 also can not insert in the second constant head tank 13, interior cover barrel 1 and shell body 2 break away from this moment, and shell body 2 also can not be pressed down, interior cover barrel 1 can not rotate along with shell body 2, the nut is in the locking state this moment, reach the theftproof function. When the nut needs to be disassembled next time, only the second driving piece needs to be taken out, the second driving piece 5 is placed outside the outer shell 2, and the second driving piece 5 corresponds to the opening of the locking channel 12, at the moment, because the magnetic force of the locking pin 3 attracted by the second driving piece 5 is greater than the magnetic force of the locking pin 3 attracted by the first driving piece 4, when the locking pin 3 can move out of the first positioning groove 11 under the driving of the second driving piece 5, at the moment, only the outer shell 2 needs to be pressed downwards, the first positioning pin 21 on the outer shell 2 is inserted into the first positioning groove 11 on the inner sleeve body 1, the second positioning pin 22 on the outer shell 2 is also inserted into the second positioning groove 13 on the inner sleeve body 1, at the moment, the outer shell 2 is completely matched with the inner sleeve body 1, the inner sleeve body 1 can rotate together with the outer shell 2, and the adjustment of screwing or.

Claims

1. The utility model provides an anti-theft nut, is equipped with internal screw thread interior cover barrel (1) including the inner wall to and the cover is established at the outer shell body (2) of interior muff external, its characterized in that: the outer shell (2) is movably arranged outside the inner sleeve body (1), at least two first positioning grooves (11) are formed in the inner sleeve body (1), at least two first positioning pins (21) capable of being inserted into the at least two first positioning grooves respectively are arranged in the outer shell (2), a locking channel (12) communicated with the first positioning grooves is further arranged in the inner sleeve body (1), a locking pin (3) is arranged in the locking channel (12), and the locking pin (3) can move in the locking channel (12); a first driving piece (4) capable of driving the locking pin to move towards the first direction in the locking channel is arranged in the inner sleeve body (1), when the locking pin (3) moves into the first positioning groove (11) under the driving of the first driving piece (4), the locking pin (3) can prevent the first positioning pin (21) from being inserted into the first positioning groove (11), and at the moment, the inner sleeve body (1) cannot rotate together with the outer shell body (2); in addition, still include second driving piece (5) that can drive locking round pin (3) and move towards the second direction in locking passageway (12), the second direction is opposite with the first direction, and the drive power that second driving piece (5) drive locking round pin (3) is greater than the drive power that first driving piece (4) drive locking round pin (3), when locking round pin (3) shifted out in first positioning groove (11) under the drive of second driving piece, first positioning pin (21) can insert in first positioning groove (11), outer shell (2) and internal sleeve body (1) cooperation, internal sleeve body (1) can rotate along with outer shell (2) together.

2. The antitheft nut of claim 1, wherein: the locking pin (3) is a metal piece or a magnet, and the first driving piece (4) is a magnet capable of attracting the locking pin (3) to move towards the direction of the first driving piece; the second driving piece (5) is also a magnet capable of attracting the locking pin (3) to move towards the direction of the second driving piece, and the magnetic force of the second driving piece (5) attracting the locking pin (3) is greater than the magnetic force of the first driving piece (4) attracting the locking pin (3).

3. The antitheft nut of claim 2, characterized in that: the second driving piece (5) is a strong magnet and is arranged outside the outer shell (2).

4. The antitheft nut of claim 3, characterized in that: and a gear post (6) for preventing the locking pin (3) from excessively moving towards the second direction is arranged in the locking channel (12).

5. The antitheft nut of claim 4, wherein: the locking channel (12) is obliquely arranged on the inner sleeve body (1), an opening (14) communicated with the locking channel (12) is formed in the outer portion of the inner sleeve body (1), and the gear column (6) is located in the opening (14).

6. The antitheft nut of claim 5, wherein: the two first positioning grooves (11) are symmetrically arranged at the top of the inner sleeve body (1), and correspondingly, the two first positioning pins (21) are also arranged; the locking channel (12), the locking pin (3), the first driving piece (4) and the gear column (6) are arranged beside each first positioning groove (11) in a matched mode.

7. The antitheft nut of claim 6, wherein: second driving piece (5) are the U type, perhaps shell body (2) are equipped with U type unlocking piece outward, second driving piece (5) set up two tip inner walls at U type unlocking piece to it is relative with opening (14) on interior cover barrel (1).

8. The antitheft nut according to any one of claims 1 to 7, characterized in that: the inner sleeve body (1) is provided with at least two second positioning grooves (13), the outer shell (2) is internally provided with at least two second positioning pins (22) which can be respectively inserted into the at least two second positioning grooves (13), and the second positioning grooves (13) and the first positioning grooves (11) are arranged in a staggered manner; the second positioning pin (22) and the first positioning pin (21) have the same length, or the length of the second positioning pin (22) is shorter than the length of the first positioning pin (21).

9. The antitheft nut of claim 8, wherein: the inner sleeve body (1) is a hollow cylinder, and the outer wall of the outer shell (2) is provided with an outer hexagonal or outer octagonal bearing surface.

10. The antitheft nut of claim 8, wherein: and a sealing ring (7) is arranged between the inner wall of the lower end of the outer shell (2) and the outer wall of the lower end of the inner sleeve body (1).