CN222596532U

CN222596532U - A stud to prevent loosening

Info

Publication number: CN222596532U
Application number: CN202420347621.6U
Authority: CN
Inventors: 刘忠岩; 张宇; 王洪有
Original assignee: Qingdao Shuangheli Machinery Co ltd
Current assignee: Qingdao Shuangheli Machinery Co ltd
Priority date: 2024-02-26
Filing date: 2024-02-26
Publication date: 2025-03-11
Anticipated expiration: 2034-02-26

Abstract

The utility model discloses a locking stud, which relates to the technical field of studs and comprises a screw and a hexagonal screw cap, wherein the hexagonal screw cap is arranged on the upper wall surface of the screw, a limiting structure is arranged on the lower wall surface of the hexagonal screw cap, a locking structure is sleeved outside the screw, the limiting structure comprises a limiting sleeve plate and eight limiting triangular plates, the limiting sleeve plate is fixedly arranged on the lower wall surface of the hexagonal screw cap, the eight limiting triangular plates are respectively arranged on the lower wall surface of the limiting sleeve plate, the locking structure comprises a locking sleeve plate and eight locking spring plates, the locking sleeve plate is movably sleeved outside the screw, and the eight locking spring plates are respectively fixedly arranged on the upper wall surface of the locking sleeve plate.

Description

Anti-loosening stud

Technical Field

The utility model relates to the technical field of studs, in particular to a locking stud.

Background

The stud is a mechanical part, a cylindrical threaded fastener matched with a nut is used, and a fastener consisting of a head part and a screw rod is matched with the nut and used for fastening and connecting two parts with through holes, and the connection mode is called stud connection, and if the nut is screwed off the stud, the two parts can be separated, so that the stud connection belongs to detachable connection.

In the current stage, the screw bolt can be loosened in the using process, and the reasons of the screw bolt include vibration, impact, long-time use, overload, overhigh working temperature, environment corrosion and the like, wherein some of the vibrations, for example, loosen the screw bolt and are frequently generated in some transmission mechanical mechanisms, so that the screw bolt needs to be prevented, and otherwise, the screw bolt is loosened to damage the transmission mechanical mechanisms.

Disclosure of utility model

The utility model aims to solve the defects in the prior art and provides an anti-loosening stud. The utility model can prevent the stud from loosening due to vibration through the mechanical structure, and the stud can be blocked by the mechanical structure when the stud rotates reversely due to vibration, thereby preventing the stud from loosening.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The anti-loosening stud comprises a screw and a hexagonal screw cap, wherein the hexagonal screw cap is arranged on the upper wall surface of the screw, a limiting structure is arranged on the lower wall surface of the hexagonal screw cap, a locking structure is sleeved outside the screw, the limiting structure comprises a limiting sleeve plate and eight limiting triangular plates, the limiting sleeve plate is fixedly arranged on the lower wall surface of the hexagonal screw cap, the eight limiting triangular plates are respectively arranged on the lower wall surface of the limiting sleeve plate, the locking structure comprises a locking sleeve plate and eight locking spring plates, the locking sleeve plate is movably sleeved outside the screw, and the eight locking spring plates are respectively and fixedly arranged on the upper wall surface of the locking sleeve plate.

The utility model further provides that the limit triangle can be buckled with the locking spring plate.

The utility model further provides that the lower wall surface of the locking sleeve plate is provided with a rubber gasket.

The utility model further provides that the lower wall surface of the rubber gasket is provided with salient points for increasing friction force.

The utility model is further arranged such that the upper half of the screw is unthreaded.

The utility model is further arranged that the diameter of the limit sleeve plate is 1.1 times of the diameter of the circumscribed circle of the hexagonal screw cap.

The utility model further provides that the diameter of the limiting sleeve plate is the same as the diameter of the locking sleeve plate.

The utility model has the beneficial effects that the stud can avoid the loosening caused by vibration through the mechanical structure, and the stud can be blocked by the mechanical structure when the stud reversely rotates caused by vibration, thereby preventing the stud from loosening.

Through being provided with limit structure and locking structure, under limit structure and locking structure's cooperation, can prevent that the screw rod from carrying out reverse rotation to can prevent that the screw rod from becoming flexible.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a locking stud according to the present utility model;

FIG. 2 is a schematic view of a first partial structure of a locking stud according to the present utility model;

FIG. 3 is a schematic view of a second partial structure of a locking stud according to the present utility model;

Fig. 4 is a schematic view of a third partial structure of a locking stud according to the present utility model.

In the figure, 1 part of screw, 2 parts of hexagonal screw cap, 3 parts of limit sleeve plate, 4 parts of limit triangle plate, 5 parts of locking sleeve plate, 6 parts of locking spring plate and 7 parts of rubber gasket.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Referring to figures 1-4, an anti-loosening stud comprises a screw 1 and a hexagonal screw cap 2, wherein the hexagonal screw cap 2 is arranged on the upper wall surface of the screw 1, a limiting structure is arranged on the lower wall surface of the hexagonal screw cap 2, and a locking structure is sleeved outside the screw 1;

the limiting structure comprises a limiting sleeve plate 3 and eight limiting triangular plates 4, wherein the limiting sleeve plate 3 is fixedly arranged on the lower wall surface of the hexagonal screw cap 2, and the eight limiting triangular plates 4 are respectively arranged on the lower wall surface of the limiting sleeve plate 3;

The locking structure comprises a locking sleeve plate 5 and eight locking spring plates 6, wherein the locking sleeve plate 5 is movably sleeved outside the screw 1, the eight locking spring plates 6 are respectively and fixedly arranged on the upper wall surface of the locking sleeve plate 5, and the screw can be prevented from reversely rotating under the cooperation of the limiting structure and the locking structure, so that the screw can be prevented from loosening.

Specifically, limit set square 4 can lock with the dead spring board 6, and rubber gasket 7 is installed to the lower wall of dead sleeve board 5, and the lower wall of rubber gasket 7 is provided with the bump that increases friction, and the upper half of screw rod 1 does not have the screw thread, and the diameter of limit sleeve board 3 is 1.1 times of hexagonal screw cap 2 circumscribed circle diameter, and the diameter of limit sleeve board 3 is the same with the diameter of dead sleeve board 5.

When the screw rod 1 is used, firstly, a countersunk hole with the diameter slightly larger than that of the dead lock sleeve plate 5 is required to be punched, then the dead lock sleeve plate 5 is directly placed in the countersunk hole, the rubber gasket 7 is positioned at the bottom of the countersunk hole, then an operator twists the screw rod 1 into the threaded hole through the hexagonal screw rod cap 2, when the screw rod 1 continuously rotates, the distance between the limit sleeve plate 3 and the dead lock sleeve plate 5 is continuously reduced until eight limit triangular plates 4 are contacted with the eight dead lock spring plates 6, when the screw rod 1 rotates in the locking direction, the limit triangular plates 4 can press the dead lock spring plates 6 to downwards deform and smoothly rotate, the dead lock sleeve plate 5 can not rotate under the action of the rubber gasket 7 until the locking work of the screw rod 1 is finally completed, and when the screw rod 1 rotates in the direction, the limit triangular plates 4 can be buckled with the dead lock spring plates 6, so that the screw rod 1 is prevented from loosening.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The anti-loosening stud comprises a screw (1) and a hexagonal screw cap (2), wherein the hexagonal screw cap (2) is arranged on the upper wall surface of the screw (1), and is characterized in that a limiting structure is arranged on the lower wall surface of the hexagonal screw cap (2), and a locking structure is sleeved outside the screw (1);

The limiting structure comprises a limiting sleeve plate (3) and eight limiting triangular plates (4);

The limiting sleeve plate (3) is fixedly arranged on the lower wall surface of the hexagonal screw cap (2), and the eight limiting triangular plates (4) are respectively arranged on the lower wall surface of the limiting sleeve plate (3);

The locking structure comprises a locking sleeve plate (5) and eight locking spring plates (6);

The locking sleeve plates (5) are movably sleeved outside the screw rods (1), and eight locking spring plates (6) are respectively and fixedly arranged on the upper wall surfaces of the locking sleeve plates (5).

2. The anti-loosening stud according to claim 1, wherein the limit triangle (4) is capable of being snapped with the locking spring plate (6).

3. The anti-loosening stud according to claim 1, wherein a rubber gasket (7) is mounted on the lower wall surface of the locking sleeve plate (5).

4. A locking stud according to claim 3, characterised in that the lower wall of the rubber gasket (7) is provided with friction increasing bumps.

5. A locking stud according to claim 1, characterised in that the upper half of the screw (1) is unthreaded.

6. A locking stud according to claim 1, characterised in that the diameter of the limit sleeve plate (3) is 1.1 times the diameter of the circumscribed circle of the hexagonal screw cap (2).

7. A locking stud according to claim 1, characterised in that the diameter of the limit sleeve plate (3) is the same as the diameter of the locking sleeve plate (5).