CN219549312U - Limit screw - Google Patents

Abstract

The utility model aims to provide a limit screw, which solves the problem that the screw is not easy to rotate after being fixed, and comprises a screw cap, a screw rod and an eccentric wheel, wherein the screw rod comprises a first rod and a second rod, the first rod is connected with the second rod, threads are arranged on the first rod, the eccentric wheel is sleeved on the second rod, the second rod passes through the eccentric wheel, the screw cap is arranged on the end face of the second rod, at least one groove is arranged in the length direction of the screw rod, the groove is used for plugging the screw, at least one hole is arranged on the eccentric wheel, and the hole is used for locking the screw.

Description

Limit screw

Technical Field

The utility model relates to a limit screw.

Background

In general, the screw is not managed after being screwed, some important parts are exposed outside, if someone goes to loosen the screw, damage is caused, or some vibrating devices vibrate for a long time, so that the connecting part is loosened, and production is affected.

How to prevent the screw from loosening and avoid artificial damage is a problem to be solved.

Disclosure of Invention

The utility model aims to provide a limit screw, which solves the problem that the screw is not easy to rotate after being fixed.

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

the utility model provides a limit screw, which comprises a nut, a screw rod and an eccentric wheel, wherein the screw rod comprises a first rod and a second rod, the first rod is connected with the second rod, threads are arranged on the first rod, the eccentric wheel is sleeved on the second rod, the second rod penetrates through the eccentric wheel, the nut is arranged on the end face of the second rod, at least one groove is arranged in the length direction of the screw rod, the groove is used for a bolt to fix the screw, at least one hole is arranged on the eccentric wheel, and the hole is used for a locking screw.

Optionally, the radius of the second rod is larger than the radius of the first rod.

Optionally, the length of the groove is as long as the length of the first rod.

Optionally, two grooves are symmetrically arranged on the outer surface of the screw.

Optionally, the groove is a V-groove.

Optionally, the nut is a polygonal cube.

Optionally, the eccentric is connected with the nut.

Optionally, the outer circumferential surface of the connecting portion of the first lever and the second lever is a curved surface.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the limit screw, the Kong Suozhu nut can not rotate after the screw is screwed, so that the position of the screw is fixed, and the problem that the screw is not easy to rotate after being fixed is solved.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic perspective view of a limit screw according to a preferred embodiment of the present utility model;

FIG. 2 is a top view of the view shown in FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

fig. 4 is a top view of fig. 1.

Wherein reference numerals are as follows:

1. a screw cap;

2. a screw;

21. a first lever;

22. a second lever;

3. an eccentric wheel;

4. a groove;

5. and (3) a hole.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 2, the screw comprises a screw cap 1, a screw rod 2 and an eccentric wheel 3, wherein the screw rod 2 comprises a first rod 21 and a second rod 22, the first rod 21 is connected with the second rod 22, and in fact, two end faces of the first rod 21 and the second rod 22 are connected, namely, the screw rod 2 is formed by two parts, the first rod 21 and the second rod 22 are integrally formed, threads are arranged on the first rod 21, and no threads are arranged on the second rod 22;

the eccentric wheel 3 is sleeved on the second rod 22, and the second rod 22 passes through the eccentric wheel 3, so that the eccentric wheel 3 and the second rod 22 can be integrally formed, but the second rod 22 passes through the eccentric wheel 3, the nut 1 is arranged on the end surface of the second rod 22, and the two end surfaces of the first rod 21 and the second rod 22 are connected, so that the second rod 22 has only one end surface;

at least one groove 4 is arranged in the length direction of the screw rod 2, the groove 4 can also be arranged in the rotation direction of the screw thread, the groove 4 is used for plugging the screw, namely, after the screw is screwed up, the plug is inserted into the groove 4, other devices are matched with the plug for use together, not shown in the figure, at least one hole 5 is arranged on the eccentric wheel 3, the hole 5 is a round hole or a square hole, the hole 5 is used for locking the screw, and after the screw is locked, the eccentric wheel 3 is locked by matching the hole 5 with other accessories, such as a chain, so that the whole screw is not rotated.

As shown in fig. 3 and 4, the radius of the second rod 22 is larger than that of the first rod 21, and the screw 2 can be rotated even when the nut 1 receives a small force, which corresponds to a labor-saving lever, and in actual use, the radius of the second rod 22 and the radius of the first rod 21 may be the same.

The length of the groove 4 is as long as the length of the first rod 21, and in practical use, the length of the groove 4 can extend to the second rod 22, the groove 4 is used for limiting in cooperation with the bolt, but the depth of the groove 4 is limited, and the depth of the groove 4 cannot exceed half the radius of the first rod 21.

The two grooves 4 are symmetrically arranged on the outer surface of the screw 2, in practical use, two or more grooves 4 can be arranged on the screw 2, if the connected equipment condition is not allowed, the two or more grooves 4 do not need to be symmetrically arranged, which is considered from the aspect of easy installation;

two or more grooves 4 are provided in the direction of rotation of the thread, and the grooves 4 are provided on the side of the first rod 21 by a pin-fit in the opposite direction.

The groove 4 is a V-shaped groove, so that the groove is the optimal scheme under the condition of the same other conditions, labor and time are saved, the V-shaped groove has a good fixing effect, and the groove 4 can also be a square groove.

The nut 1 is a polygonal cube, the polygonal cube is used for facilitating rotation and force, no matter at which angle, the nut can be rotated by a tool or a person, and the efficiency is high during rotation, in the utility model, the minimum outer diameter of the eccentric wheel 3 is larger than the maximum outer diameter of the nut 1, the eccentric wheel 3 can also play a buffering role, when a screw is used for screwing a fitting, the nut is usually directly abutted against a connecting piece, at the moment, if the force is improper, the connecting piece is possibly extruded and deformed, and when the eccentric wheel 3 is abutted against the connecting piece, the stress area of the connecting piece is large because of large stress surface and small pressure, and the connecting piece is not easy to deform because of small stress.

The eccentric wheel 3 is connected with the screw cap 1, and can refer to that the eccentric wheel 3 and the screw cap 1 are integrally formed, or the eccentric wheel 3 and the screw cap 1 are fixed together, so that the eccentric wheel 3 and the screw cap 1 are large in volume and difficult to disperse, and the eccentric wheel 3 and the screw cap 1 are easy to carry and difficult to lose.

In the present utility model, the outer circumferential surface of the connecting portion of the first rod 21 and the second rod 22 is a curved surface, and this connecting portion may be a chamfer in practice, or the connecting portion of the first rod 21 and the second rod 22 forms a wall body, and two circular end surfaces of different radii are connected together.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (8)

1. The utility model provides a limit screw, its characterized in that, includes nut (1), screw rod (2) and eccentric wheel (3), screw rod (2) are including first pole (21) and second pole (22), first pole (21) with second pole (22) are connected be provided with the screw thread on first pole (21), eccentric wheel (3) cover is established on second pole (22), and second pole (22) pass eccentric wheel (3), nut (1) set up on the terminal surface of second pole (22) set up at least one recess (4) on screw rod (2) length direction, recess (4) are used for the bolt set screw set up at least one hole (5) on eccentric wheel (3), hole (5) are used for locking the screw.

2. A limit screw according to claim 1, characterized in that the radius of the second rod (22) is larger than the radius of the first rod (21).

3. A limit screw according to claim 1, characterized in that the length of the recess (4) is as long as the length of the first rod (21).

4. A limit screw according to claim 1, characterized in that two of said grooves (4) are symmetrically arranged on the outer surface of said screw (2).

5. A limit screw according to claim 1, characterized in that the recess (4) is a V-groove.

6. A limit screw according to claim 1, characterized in that the cap (1) is a polygonal cube.

7. A limit screw according to claim 1, characterized in that the eccentric (3) is connected to the nut (1).

8. The limit screw according to claim 1, characterized in that the outer circumferential surface of the connecting portion of the first rod (21) and the second rod (22) is a curved surface.