CN219413224U - Antitheft screw cap - Google Patents

Abstract

The utility model discloses an anti-theft screw cap which comprises a hexagonal sleeve, wherein a screw cap is arranged in the hexagonal sleeve, a toothed ring is sleeved outside the screw cap, limiting plates are arranged at two ends of the interior of the hexagonal sleeve, one side, close to the central axis of the hexagonal sleeve, of each limiting plate is provided with an arc surface, and a rack is fixed on each arc surface. This theftproof nut is provided with and ring gear and push rod to push into the through-hole through the metal bar to support two sets of metal bars respectively through monkey wrench's movable arm and fixed arm, make the metal bar promote the push rod and drive two sets of limiting plates and rack and be close to each other, make rack and the ring gear intermeshing in the nut outside, can rotate the hexagonal cover and drive the nut and rotate and install or dismantle the nut, can take out the metal bar after the installation, the inside spring of hexagonal cover then can drive two sets of limiting plates and rack and keep away from each other this moment, make rack and ring gear separation, can make the hexagonal cover idle running in the nut outside, play the purpose of theftproof and convenient dismouting from this, improve its functionality.

Description

Antitheft screw cap

Technical Field

The utility model relates to the technical field related to hardware fittings, in particular to an anti-theft nut.

Background

The bolt and the nut are commonly used for installing mechanical equipment and used for fastening mechanical parts, along with the continuous development of industry, the variety of the nut is also continuously increasing, and the anti-theft nut is one of them and is mainly used for preventing looseness and theft of a connecting and fastening part of a mechanical component.

The Chinese patent with publication number CN2620126Y discloses a lock anti-theft screw cap, which comprises a screw cap, a hexagonal sleeve and a pin, wherein a cylindrical screw cap with a boss at the outer end of the screw cap is inserted into the hexagonal sleeve matched with the screw cap and provided with a corresponding annular groove to form a combined screw cap, a blind pin hole along the axial direction of a matching surface is arranged on the inner side end surface of the combined screw cap, and the pin is arranged in the blind pin hole. The locking surface of the nut is used as a reference, and the nut and the hexagonal sleeve have an axial clearance. When the nut is screwed by a wrench, the pin is sheared off when overload torque of the screwing force occurs, the hexagonal sleeve can only idle on the nut and cannot be disassembled, and the purposes of preventing looseness and theft are achieved. The anti-loose anti-theft nut has the following advantages: the novel wrench has the advantages of novel conception, unique structure, convenient operation, time and labor saving, firm connection, safety, high efficiency, incapability of being disassembled by using the conventional wrench and wide application range, and is particularly suitable for being used on power equipment.

In summary, the above-mentioned patent is equipped with the blind pin hole along the axial direction of mating surface on the inboard terminal surface of combination nut, is equipped with the pin in its blind pin hole, and when the overload moment of tightening force takes place, the pin is cut, and the hexagonal cover can only idle on the nut to reach the purpose of preventing burglary, but the above-mentioned patent is cut after the pin, and this nut can't dismantle, and it can only prevent burglary but inconvenient dismantlement, and the functionality is comparatively single.

Disclosure of Invention

The utility model aims to provide an anti-theft nut to solve the problem that the patent provided in the background art can only realize anti-theft but is inconvenient to disassemble.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an anti-theft screw cap comprises a hexagonal sleeve,

the nut is arranged in the hexagonal sleeve, the toothed ring is sleeved outside the nut, limiting plates are arranged at two ends of the inside of the hexagonal sleeve, an arc surface is formed on one side, close to the central axis of the hexagonal sleeve, of the limiting plates, and a rack is fixed on the arc surface;

and clamping mechanisms are arranged at two ends of the inside of the hexagonal sleeve and used for driving the limiting plate and the rack to transversely move.

Through adopting above-mentioned technical scheme, when rack and the ring gear separation state on two sets of limiting plates down, rotate the hexagonal cover and can't drive the nut rotation, the hexagonal cover can idle in the nut outside, with this can play nut theftproof purpose after mechanical parts fastens, during dismantlement or installation, accessible block mechanism drives two sets of limiting plates of hexagonal cover inside and is close to each other, make rack on two sets of limiting plates support the ring gear in the nut outside, make rack and ring gear intermeshing, afterwards can rotate the hexagonal cover through the spanner, the hexagonal cover can transmit the moment of torsion to the nut this moment, in order to drive the nut rotatory on the bolt, still conveniently dismantle the nut when playing the theftproof.

Preferably, annular grooves are formed in the upper end and the lower end of the hexagonal sleeve, rotating rings are fixed at the upper end and the lower end of the nut, and the rotating rings are located in the annular grooves.

Through adopting above-mentioned technical scheme, the swivel on nut both sides can carry out spacingly to the nut to the hexagonal cover is rotatory in the nut outside.

Preferably, the clamping mechanism comprises through holes, the through holes are formed in two ends of the side portions of the hexagonal sleeve, the through holes are communicated with the inside of the hexagonal sleeve, push rods are arranged in the through holes, and the push rods are connected with the limiting plates.

Through adopting above-mentioned technical scheme, when carrying out the dismouting to the nut, can push into the through-hole with the metal strip of corresponding through-hole size, afterwards accessible monkey wrench supports the metal strip, make monkey wrench's movable arm and fixed arm support two sets of metal strips respectively, the metal strip can promote the inside push rod of through-hole this moment, can make two sets of push rods drive two sets of limiting plates and rack and be close to each other, when monkey wrench's movable arm and fixed arm press from both sides hexagonal cover tightly, rack then can mesh with the ring gear, afterwards can rotate the monkey wrench and rotate the hexagonal cover, make hexagonal cover transfer torque to the nut, in order to drive the nut rotatory fastening mechanical parts on the bolt.

Preferably, springs are fixed at two ends of the inner wall of the hexagonal sleeve, and the springs are connected with the limiting plates.

Through adopting above-mentioned technical scheme, after installing the nut on the bolt, can loosen adjustable wrench and make its movable arm and fixed arm and metal strip separation, afterwards can take out the metal strip, the spring at hexagonal cover inner wall both ends then can drive two sets of limiting plates and rack and keep away from each other, makes rack and the ring gear separation in the nut outside, rotates the hexagonal cover at this moment and can make the hexagonal cover idle running in the nut outside to reach the purpose of theftproof.

Preferably, a rectangular groove is formed in the outer side wall of the hexagonal sleeve, and a rubber cover is arranged in the rectangular groove.

Through adopting above-mentioned technical scheme, this rubber cover can prevent that impurity such as dust or earth from getting into the through-hole and causing the jam to avoid the through-hole to stop up the back and can't promote its inside push rod.

Compared with the prior art, the utility model has the beneficial effects that: the anti-theft screw cap is provided with a screw cap,

(1) The movable arm and the fixed arm of the adjustable wrench respectively prop against the two groups of metal strips, so that the metal strips push the push rod and drive the two groups of limiting plates and the racks to be close to each other, the racks are meshed with the toothed ring on the outer side of the nut, the hexagonal sleeve can be rotated to drive the nut to rotate so as to mount or dismount the nut, the metal strips can be taken out after the nut is mounted, at the moment, the springs in the hexagonal sleeve can drive the two groups of limiting plates and the racks to be mutually far away, the racks are separated from the toothed ring, and the hexagonal sleeve can idle on the outer side of the nut, thereby achieving the purposes of theft prevention and convenient dismounting and improving the functionality of the nut;

(2) Be provided with the rubber cover, through setting up the rubber cover in the through-hole outside for can block the impurity in the hexagonal cover outside, in order to avoid impurity entering through-hole to cause the jam, improve its practicality.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

fig. 3 is a schematic side view of the present utility model.

In the figure: 1. the nut is fixed on the nut through a bolt, and the nut is fixed on the nut through a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: as shown in fig. 1, 2 and 3, a nut 2 is arranged in a hexagonal sleeve 1, a toothed ring 4 is sleeved outside the nut 2, limiting plates 5 are arranged at two ends of the inside of the hexagonal sleeve 1, one side, close to the central axis of the hexagonal sleeve 1, of each limiting plate 5 is provided with a cambered surface, and a rack 6 is fixed on each cambered surface;

the inside both ends of hexagonal cover 1 are provided with clamping mechanism 7, and clamping mechanism 7 is used for driving limiting plate 5 and rack 6 to carry out lateral movement.

As shown in fig. 1, 2 and 3, annular grooves are formed in the upper end and the lower end of the hexagonal sleeve 1, rotating rings 3 are fixed at the upper end and the lower end of the nut 2, and the rotating rings 3 are located in the annular grooves.

As shown in fig. 1 and 2, the engagement mechanism 7 includes a through hole 701, the through hole 701 is opened at two ends of a side portion of the hexagonal sleeve 1, the through hole 701 is communicated with the inside of the hexagonal sleeve 1, a push rod 702 is disposed in the through hole 701, and the push rod 702 is connected with the limiting plate 5.

As shown in fig. 2, springs 8 are fixed at two ends of the inner wall of the hexagonal sleeve 1, and the springs 8 are connected with the limiting plates 5.

As shown in fig. 1 and 3, a rectangular groove is formed in the outer side wall of the hexagonal sleeve 1, and a rubber cover 9 is installed in the rectangular groove.

Working principle: when the nut 2 is installed, firstly, the rubber cover 9 is pulled out to push metal strips with the size corresponding to the through hole 701 into the through hole 701, then the movable arms and the fixed arms of the adjustable wrench are respectively propped against the two groups of metal strips, so that the metal strips push rods 702 in the through hole 701, the two groups of push rods 702 drive the two groups of limiting plates 5 and the racks 6 to be close to each other, when the movable arms and the fixed arms of the adjustable wrench clamp the hexagonal sleeve 1, the racks 6 are meshed with the toothed rings 4, then the adjustable wrench can be rotated to rotate the hexagonal sleeve 1 and the nut 2 for installation, after installation, the movable arms and the fixed arms of the adjustable wrench are released to be separated from the metal strips in the through hole 701, the metal strips are removed, then springs 8 at two ends of the inner wall of the hexagonal sleeve 1 drive the two groups of limiting plates 5 and the racks 6 to be separated from the toothed rings 4 at the outer side of the nut 2, and the nut 2 cannot be driven when the hexagonal sleeve 1 is rotated.

This completes the entire operation and what is not described in detail in this specification is well known to those skilled in the art.

The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present utility model.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (5)

1. An antitheft nut comprises a hexagonal sleeve (1), and is characterized in that:

the novel hexagonal socket is characterized in that a nut (2) is arranged in the hexagonal socket (1), a toothed ring (4) is sleeved on the outer side of the nut (2), limiting plates (5) are arranged at two ends of the inner part of the hexagonal socket (1), an arc surface is formed in one side, close to the central axis of the hexagonal socket (1), of the limiting plates (5), and a rack (6) is fixed on the arc surface;

the hexagonal sleeve (1) is characterized in that clamping mechanisms (7) are arranged at two ends of the inside of the hexagonal sleeve, and the clamping mechanisms (7) are used for driving the limiting plate (5) and the racks (6) to transversely move.

2. An antitheft nut as defined in claim 1, wherein: annular grooves are formed in the upper end and the lower end of the hexagonal sleeve (1), rotating rings (3) are fixed at the upper end and the lower end of the nut (2), and the rotating rings (3) are located in the annular grooves.

3. An antitheft nut as defined in claim 1, wherein: the clamping mechanism (7) comprises a through hole (701), the through hole (701) is formed in two ends of the side part of the hexagonal sleeve (1), the through hole (701) is communicated with the inside of the hexagonal sleeve (1), a push rod (702) is arranged in the through hole (701), and the push rod (702) is connected with the limiting plate (5).

4. An antitheft nut as defined in claim 1, wherein: springs (8) are fixed at two ends of the inner wall of the hexagonal sleeve (1), and the springs (8) are connected with the limiting plates (5).

5. An antitheft nut as defined in claim 1, wherein: the outer side wall of the hexagonal sleeve (1) is provided with a rectangular groove, and a rubber cover (9) is arranged in the rectangular groove.