CN218882751U - Screw with anti-loosening function - Google Patents

Abstract

The application discloses a screw with an anti-loosening function, which comprises a screw body, a screw cap, a groove and an anti-loosening external nut, wherein the anti-loosening external nut is arranged on the outer side of the screw cap through threads; the floating clamping piece is slidably installed in the groove, the lower end face of the anti-loosening external nut is lower than the lower end face of the screw cap, the outer end of the floating clamping piece is abutted to the upper end face of the anti-loosening external nut, by adopting the technical scheme, in daily use, upward thrust is applied to the screw cap and the screw body through rotation of the anti-loosening external nut, so that the threads on the surface of the screw body are tightly extruded with the threads on the inner surface of the screw hole in the part, and the anti-loosening external nut is prevented by matching with the floating clamping pieces, so that the combination of the screw body and the screw hole in the part is tight and is not easy to loosen, and the screw hole in the part is not damaged.

Description

Screw with anti-loosening function

Technical Field

The utility model relates to a screw with locking function.

Background

The screw is the most common fastener in daily life, utilize the inclined plane circular rotation of object and physics and mathematical principle of frictional force, fasten the instrument of thing parts step by step, when current screw is used for fastening the thing for a long time, can loosen because of the thing shake, lose the fastening effect to the thing, this technical problem has not been solved, in prior art, an automobile screw (publication No. CN 217519042U) that has locking structure has appeared, it includes outer fastening screw, interior locking screw and locking subassembly, locking subassembly includes annular fixed boss, reset spring one, push rod, pressure head, a set of check nail and reset plate, through rotatory interior locking screw that loosens a pair of check nail outer ends stretch out and stab in the part in to play locking effect, the following problem exists in this scheme:

during the locking nail outer end inserted the part, must lead to the fact the screw thread of screw on the part impaired, can lead to the screw on the part to damage after the dismouting many times, influence the assembly effect of screw.

Disclosure of Invention

The utility model discloses aim at solving one of the technical problem that exists among the prior art.

The application provides a screw with locking function, including the nail body, the head of a nail and play groove, include:

the anti-loosening external nut is arranged on the outer side of the nail cap through threads;

wherein, the outside of nail cap is equipped with the external screw thread, and the nail cap is cylindricly.

Still include a plurality of anticreep pieces, each anticreep piece all includes:

the groove is arranged on the outer peripheral wall of the nail cap;

a floating engaging member slidably mounted in the groove;

and the outer end of the floating clamping piece is abutted against the upper end face of the anti-loosening external nut when the lower end face of the anti-loosening external nut is lower than the lower end face of the nail cap.

The anticreep piece has six at least, and evenly interval distribution along the circumference on the periphery wall of nail cap.

The anti-drop still includes:

and the pre-load force spring is arranged between the inner end of the groove and the inner end of the floating clamping piece and continuously applies thrust to the floating clamping piece.

The floating engagement member includes:

the sliding block can be arranged in the groove in a sliding mode, and the inner end of the sliding block is abutted to the outer end of the preload spring;

and the clamping block is arranged at the top end of the outer side wall of the sliding block.

The sliding block and the clamping block are integrally formed and are made of steel.

The floating snap also includes:

and a guide slope provided on an outer end upper surface of the latch.

Further comprising:

and the gasket is sleeved on the outer side of the nail body and is positioned below the anti-loosening external nut.

The utility model has the advantages as follows:

1. through the arrangement of the anti-loosening external nut and the external threads, the threads on the surface of the nail body are tightly extruded with the threads on the inner surface of the screw hole on the part, so that the nail body is prevented from loosening;

2. through the cooperation of a plurality of recesses, a plurality of fastener and a plurality of preload force spring that float, make locking outer nut when effective, can not loosen, guarantee the fastness of nail body installation.

Drawings

FIG. 1 is a front view of a screw with anti-loosening function according to an embodiment of the present application;

FIG. 2 is a top view of a screw with anti-loosening function according to an embodiment of the present application;

fig. 3 is a schematic view of a part a of fig. 1.

Reference numerals

1-nail body, 2-nail cap, 3-grooving, 4-anti-loosening external nut, 5-external thread, 6-groove, 7-preload spring, 8-sliding block, 9-clamping block, 10-guiding inclined plane and 11-gasket.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

The server provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Example 1:

as shown in fig. 1 and 2, the embodiment of the present application provides a screw with an anti-loosening function, which includes a screw body 1, a screw cap 2, a groove 3, and an anti-loosening external nut 4, which is installed on the outer side of the screw cap 2 through a thread, wherein the outer side of the screw cap 2 is provided with an external thread 5, and the screw cap 2 is cylindrical.

Further, each anti-falling piece comprises a groove 6 which is arranged on the peripheral wall of the nail cap 2; a floating snap-fit member slidably mounted in the groove 6; wherein, the lower end surface of the anti-loosening nut 4 is lower than the lower end surface of the nail cap 2, and the outer end of the floating clamping piece is abutted against the upper end surface of the anti-loosening nut 4.

Preferably, the anti-dropping pieces have at least six and are evenly distributed on the peripheral wall of the nail cap 2 at intervals along the circumferential direction.

Furthermore, the anti-disengaging piece also comprises a pre-loading force spring 7 which is arranged between the inner end of the groove 6 and the inner end of the floating clamping piece and continuously applies pushing force to the floating clamping piece.

In this embodiment of the application, due to the above-mentioned structure, during installation, the screw body 1 of the screw is aligned with the screw hole on the part, and the screw cap 2 and the screw body 1 are rotated by using a manual or electric tool to be matched with the groove 3, so that the lower end of the screw body 1 extends into the screw hole until the lower end surface of the screw cap 2 contacts with the surface of the part, and then the outer locknut 4 is rotated by using a clamping tool or a hexagonal sleeve to be matched with the outer locknut 4, so that the outer locknut 4 moves downwards towards the surface of the part, and as the locknut is continuously rotated, the lower end surface of the locknut first abuts against the surface of the part, and then continues to descend, so that a gap appears between the lower end surface of the screw cap 2 and the surface of the part, and the screw body 1 is simultaneously lifted, so that the screw thread on the screw body 1 and the screw thread in the screw hole on the part are tightly pressed, and simultaneously, each floating clamping member extends out of the groove 6 and then continues to the upper end surface of the outer locknut 4 under the push of the corresponding preload spring 7, and at this time, the lower end surface of the locknut 4 will not loosen during the vibration of the part;

as shown in fig. 2, the anti-loosening external nut 4 is a conventional hexagonal nut, and the external thread 5 and the internal thread of the hexagonal nut are oriented in the same direction as the thread on the nail body 1;

preload power spring 7 is just exerted preload force when the installation, can continuously exert pressure to the fastener that floats to, a plurality of fasteners that float are along the even interval distribution of circumference, and the vibrations of any direction all can not make each preload power spring 7 all inwards to the indent 6 simultaneously, consequently can guarantee under various vibrations operating mode, make the screw not loosen and take off.

Example 2:

as shown in fig. 3, in the present embodiment, in addition to the structural features of the previous embodiment, the floating engagement member includes a sliding block 8 slidably mounted in the groove 6 with an inner end abutting against an outer end of the preload spring 7; and the clamping block 9 is arranged at the top end of the outer side wall of the sliding block 8.

Preferably, the sliding block 8 and the latch 9 are integrally formed and made of steel.

Further, the floating engaging member further includes a guiding inclined surface 10 provided on an upper surface of an outer end of the engaging block 9.

Furthermore, the anti-loosening nut further comprises a gasket 11 which is sleeved outside the nail body 1 and is positioned below the anti-loosening nut 4.

In the embodiment of the application, due to the adoption of the structure, the sliding block 8 and the clamping block 9 which are made of steel and integrally formed are high in structural strength, when the upper end surface of the anti-loosening nut 4 is lowered to be flush with the lower end surface of the clamping block 9, under the action of the pre-loading force spring 7, the sliding block 8 and the clamping block 9 slide outwards the groove 6 until the outer side wall of the sliding block 8 is abutted against the inner wall of the anti-loosening nut 4, at the moment, the clamping block 9 moves to be above the upper end surface of the anti-loosening nut 4, and the bottom surface of the clamping block 9 is abutted against the upper end surface of the anti-loosening nut 4;

through the arrangement of the guide inclined plane 10, when the anti-loose nut 4 is installed, the inner thread of the inner ring of the anti-loose nut is matched with the upper part of the outer thread 5 of the screw cap 2, and in the process of rotating the anti-loose nut 4 to move towards the lower part of the screw cap 2, the guide inclined plane 10 at the outer end of each clamping block 9 is matched with the lower end of the inner ring of the anti-loose nut 4 and is pushed into the groove 6, the pre-loading force spring 7 is pressed to store energy, the clamping blocks 9 do not need to be pressed manually, and the installation is convenient;

through the arrangement of the gasket 11, when the anti-loose external nut 4 rotates downwards, the gasket 11 is pressed on the surface of the part, the gasket 11 is made of plastic, the lower end of the anti-loose external nut 4 can be effectively prevented from being scratched and rubbed with the surface of the part when rotating, and the surface of the part is prevented from being scratched and damaged.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The utility model provides a screw with locking function, includes the nail body (1), the head of a nail (2) and plays groove (3), its characterized in that still includes:

the anti-loosening external nut (4) is installed on the outer side of the nail cap (2) through threads;

wherein, the outside of the nail cap (2) is provided with an external thread (5), and the nail cap (2) is cylindrical.

2. The screw with anti-loosening function according to claim 1, further comprising a plurality of anti-loosening members, each of which comprises:

a groove (6) provided on the outer peripheral wall of the nut (2);

a floating catch slidably mounted in the recess (6);

the lower end face of the anti-loosening nut (4) is lower than the lower end face of the nail cap (2), and the outer end of the floating clamping piece is abutted to the upper end face of the anti-loosening nut (4).

3. A screw having a loosening prevention function according to claim 2, wherein:

the anti-dropping pieces are at least six and are uniformly distributed on the peripheral wall of the nail cap (2) at intervals along the circumferential direction.

4. The screw with anti-loosening function according to claim 2, wherein the anti-loosening member further comprises:

and the preloading force spring (7) is arranged between the inner end of the groove (6) and the inner end of the floating clamping piece and continuously applies thrust to the floating clamping piece.

5. The screw with anti-loosening function according to claim 4, wherein the floating engaging member comprises:

a sliding block (8) which is slidably arranged in the groove (6), and the inner end of the sliding block is abutted with the outer end of the preloading force spring (7);

and the clamping block (9) is arranged at the top end of the outer side wall of the sliding block (8).

6. A screw with anti-loosening function according to claim 5, wherein:

and the sliding block (8) and the clamping block (9) are integrally formed and are made of steel.

7. The screw with anti-loosening function according to claim 5, wherein the floating engaging member further comprises:

and a guide slope (10) provided on an outer end upper surface of the latch (9).

8. The screw with anti-loosening function according to any one of claims 1 to 7, further comprising:

and the gasket (11) is sleeved on the outer side of the nail body (1) and is positioned below the anti-loosening external nut (4).

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