CN209856188U

CN209856188U - Anti-loosening screw

Info

Publication number: CN209856188U
Application number: CN201920265195.0U
Authority: CN
Inventors: 朱阳阳
Original assignee: Beijing Fuhua Xin Standard Parts Co Ltd
Current assignee: Beijing Fuhua Xin Standard Parts Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-27
Anticipated expiration: 2029-02-28

Abstract

The utility model relates to an anti-loosening screw can be applied to screw technical field, including the nut and with the fixed screw rod of nut, the screw rod cover is equipped with spring and gasket, the screw rod surface is equipped with the screw thread, the nut diameter is greater than the screw rod diameter, spring one end fixed connection is on the nut, other end fixed connection is on the gasket, and the gasket internal diameter is less than the nut external diameter, and the gasket external diameter is greater than the nut external diameter, and the nut is equipped with interior hexagonal recess, is equipped with magnet in the interior hexagonal recess, and nut and screw rod and spring and gasket surface all have zinc-plating, and nut and screw rod surface all have the zinc-plated screw rod to keep away from nut one end is equipped with the screw rod head.

Description

Anti-loosening screw

Technical Field

The utility model relates to a screw technical field especially relates to an anti-loosening screw.

Background

The screw is an indispensable part in mechanical equipment, is mainly used for the fixed connection of the part, screw in the screw hole of the part to be fastened, with its end sticiss on the surface of another part, namely fix the preceding part on the latter part, the screw generally respectively coiled head screw, cylinder head screw, half countersunk screw and countersunk screw etc. coiled head screw and cylinder head screw's pin head intensity is higher, the head of half countersunk screw is the arc, its top slightly exposes after the installation, and pleasing to the eye smooth, generally is used for the instrument or precision machinery, and countersunk screw is used for not allowing the place that the pin head exposes. At present, some screws on the market can receive stronger resistance when the objects are contacted, the fixing difficulty of the screws is large, the loosening of the screws can be caused by repeated operation, the anti-loosening performance is poor, the phenomenon of wire sliding is easy to occur, and the fixing effect is poor.

To the above-mentioned problem, chinese patent that publication number is CN107795567A discloses a screw with locking function, including screw rod and screw cap, the screw rod is located the lower part of screw cap, first screw thread and second screw thread have all been seted up to the upper portion and the lower part of screw rod surface, and first screw thread and second screw thread are crisscross form and arrange, the protrusion piece that the middle part fixedly connected with equidistance of screw rod was arranged, the inside of screw rod is provided with first siphunculus and second siphunculus respectively, and first siphunculus and second siphunculus are linked together, the both ends of second siphunculus all extend to the outside of screw rod, and the equal fixedly connected with dust screen in both ends of second siphunculus, the top fixedly connected with buffer block of screw rod. This screw with locking function can carry out effectual fixed to the object, and is fixed effectual, and locking performance is high, has avoided the not hard up of screw, and the power of grabbing of screw is better, the effectual phenomenon of having avoided smooth silk to the effectual fixed degree of difficulty of screw and the easy not hard up problem of screw have been solved.

The problem that screw locking performance is poor has been solved to above-mentioned scheme, and the phenomenon of smooth silk appears easily, and fixed effect is poor, but some equipment can produce vibrations at the during operation, and the screw that has locking function that above-mentioned scheme provided can probably loosen when receiving vibrations and take off, and to some blind holes, the screw pine takes off and probably influences mechanical life, mechanical safety and personal safety.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an anti-looseness screw, through set up spring and gasket on the screw rod, spring one end fixed connection is on the nut, and other end fixed connection is on the gasket, and the screw rod prevents loosing when receiving vibrations that the screw takes off in pressure and frictional force between spring increase screw rod and the equipment when the tightening.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an anti-loosening screw, includes the nut and with nut fixed connection's screw rod, the screw rod surface is equipped with the screw thread, the nut diameter is greater than the screw rod diameter, its characterized in that: the screw rod sleeve is provided with a spring and a gasket, and the spring is located between the screw cap and the gasket.

Through adopting above-mentioned technical scheme, be equipped with spring and gasket at the screw rod cover, the screw rod surface is equipped with the screw thread, the nut diameter is greater than the screw rod diameter, makes the screw rod pressure and frictional force between spring increase screw rod and the equipment when the fastening, has solved the screw and can probably loosen when receiving vibrations and take off, influences the problem of mechanical safety and personal safety.

The utility model discloses further set up to: one end of the spring is fixedly connected to the nut, and the other end of the spring is fixedly connected to the gasket.

Through adopting above-mentioned technical scheme, spring one end fixed connection is on the nut, and other end fixed connection makes spring and gasket and nut be a whole on the gasket, and direct fastening screw can when using, does not need other operations, convenient to use and operation.

The utility model discloses further set up to: the inner diameter of the gasket is smaller than the outer diameter of the nut, and the outer diameter of the gasket is larger than the outer diameter of the nut.

Through adopting above-mentioned technical scheme, the gasket internal diameter is less than the nut external diameter, and the gasket external diameter is greater than the nut external diameter, and the gasket can increase the area of contact on screw and equipment surface like this, prevents that the nut surface from being worn out.

The utility model discloses further set up to: the threads are triangular threads.

Through adopting above-mentioned technical scheme, the screw thread is the triangle-shaped screw thread, and triangle-shaped screw thread self-locking performance is good.

The utility model discloses further set up to: and the surfaces of the screw cap, the screw rod, the spring and the gasket are respectively provided with a zinc coating.

By adopting the technical scheme, the surfaces of the screw cap, the screw rod, the spring and the gasket are respectively provided with the galvanized layer, so that the anti-loosening screw can be effectively prevented from rusting.

The utility model discloses further set up to: and one end of the nut, which is far away from the screw rod, is provided with an inner hexagonal groove.

By adopting the technical scheme, the end, far away from the screw rod, of the nut is provided with the inner hexagonal groove, the six surfaces of the inner hexagonal groove have more force application points when the nut is screwed down, so that the nut can bear larger load and can be screwed down more tightly, the whole nut is sunk into a workpiece, the surface of the workpiece can be kept flat and attractive, and the inner hexagonal groove is suitable for more assembly occasions, particularly narrow occasions.

The utility model discloses further set up to: and magnets are arranged in the inner hexagonal grooves.

Through adopting above-mentioned technical scheme, set up magnet in hexagonal recess, make the screw can inhale fastening tool when needs are taken and are fastened on, the operator is easier to operate.

The utility model discloses further set up to: the screw rod is kept away from nut one end is equipped with the screw head is the hemisphere, the nut edge all is equipped with the chamfer.

Through adopting above-mentioned technical scheme, set up the screw head and be the hemisphere, the nut edge all is equipped with the chamfer, and operating personnel can not appear phenomenons such as fish tail when using, uses safelyr.

To sum up, the utility model discloses following beneficial effect has:

1. the spring and the gasket are arranged on the screw rod, one end of the spring is fixedly connected to the nut, the other end of the spring is fixedly connected to the gasket, and the spring increases the pressure and the friction force between the screw rod and equipment when the screw rod is tightened, so that the problems that the screw rod is likely to loosen when vibrated, and the mechanical safety and the personal safety are affected are solved;

2. through set up magnet in the hexagon socket head cap recess, make the screw can inhale fastening tool when needs take and fasten on, the operator is easier to operate.

Drawings

Fig. 1 is the utility model provides a locking screw spatial structure sketch map that moves.

Fig. 2 is a cross-sectional view of the anti-loosening screw provided by the utility model.

In the figure: 1. a nut; 2. a screw; 3. a spring; 4. a gasket; 5. a thread; 6. an inner hexagonal groove; 7. a magnet; 8. a screw head.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

as shown in figure 1, a locking screw that moves, including nut 1 and with nut 1 fixed connection's screw rod 2, 2 surfaces of screw rod are equipped with screw thread 5, nut 1 diameter is greater than 2 diameters of screw rod, 2 covers of screw rod are equipped with spring 3 and gasket 4, spring 3 is located between nut 1 and the gasket 4, make screw rod 2 when the tightening spring 3 increase pressure and frictional force between screw rod 2 and the equipment, solved the screw and can probably loosen when receiving vibrations, influence the problem of mechanical safety and personal safety. Spring 3 one end fixed connection is on nut 1, and other end fixed connection is on gasket 4, makes spring 3 and gasket 4 and nut 1 be a whole, and direct fastening screw can when using, does not need other operations, convenient to use and operation. The inside diameter of the gasket 4 is smaller than the outside diameter of the nut 1, and the outside diameter of the gasket 4 is larger than the outside diameter of the nut 1, so that the gasket 4 can increase the contact area between the nut 1 and the surface of equipment, and the surface of the nut 1 is prevented from being worn out. As shown in figure 1, the screw 2 is kept away from 1 one end of nut and is equipped with screw head 8, and screw head 8 is the hemisphere, and 1 edge of nut all is equipped with the chamfer, and operating personnel can not appear phenomenons such as fish tail when using, uses safelyr. The surfaces of the nut 1, the screw rod 2, the spring 3 and the gasket 4 are all provided with zinc coatings, and the zinc coatings can effectively prevent the anti-loosening screw from rusting, so that the surface of the screw is attractive.

As shown in figure 2, the end of the nut 1 far away from the screw 2 is provided with the inner hexagonal groove 6, the inner hexagonal groove 6 has six surfaces, so that the force application point is more when the nut is screwed, the nut can bear larger load and can be screwed more tightly, the whole nut 1 sinks into a workpiece, the surface of the workpiece can be kept flat and attractive, and the inner hexagonal is suitable for more assembly occasions, particularly narrow occasions. The magnet 7 is arranged in the inner hexagonal groove 6, the magnet 7 enables the screw to be attracted to a fastening tool when the screw needs to be taken and fastened, and an operator can operate the screw more easily. The thread 5 is a triangular thread which has good self-locking performance.

When the device is used, an iron inner hexagonal wrench (not shown in the figure) is inserted into the inner hexagonal groove 6 by an operator, the magnet 7 in the inner hexagonal groove 6 can attract the inner hexagonal wrench (not shown in the figure), and the operator can fasten the screw to the accurate screw hole on the device.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an anti-loosening screw, includes nut (1) and screw rod (2) with nut (1) fixed connection, screw rod (2) surface is equipped with screw thread (5), nut (1) diameter is greater than screw rod (2) diameter, its characterized in that: screw rod (2) cover is equipped with spring (3) and gasket (4), spring (3) be located nut (1) with between gasket (4), nut (1) is kept away from screw rod (2) one end is equipped with interior hexagonal recess (6), be equipped with magnet (7) in interior hexagonal recess (6), screw rod (2) are kept away from nut (1) one end is equipped with screw head (8) are the hemisphere, nut (1) edge all is equipped with the chamfer.

2. A locking screw as claimed in claim 1, wherein: one end of the spring (3) is fixedly connected to the nut (1), and the other end of the spring is fixedly connected to the gasket (4).

3. A locking screw as claimed in claim 2, wherein: the inner diameter of the gasket (4) is smaller than the outer diameter of the nut (1), and the outer diameter of the gasket (4) is larger than the outer diameter of the nut (1).

4. A locking screw as claimed in claim 1, wherein: the thread (5) is a triangular thread.

5. A locking screw as claimed in claim 1, wherein: and the surfaces of the screw cap (1), the screw rod (2), the spring (3) and the gasket (4) are provided with zinc coatings.