CN215861250U

CN215861250U - Expansion pipe anti-loosening screw

Info

Publication number: CN215861250U
Application number: CN202122297207.8U
Authority: CN
Inventors: 洪奕凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-18
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses an expansion pipe anti-loosening screw which comprises a first screw rod, wherein a reverse thread is fixedly connected to the side surface of the first screw rod, a second screw rod is fixedly connected to one end, close to the reverse thread, of the first screw rod, and double threads are fixedly connected to the side surface of the second screw rod, which is positioned on the right side of the reverse thread. According to the utility model, through the installed back-off teeth and the double teeth, the back-off teeth have the functions of skid resistance and loosening resistance on plastic, the double teeth are singly used for rapidly tapping the plastic and wood, the labor is saved, the tail tip has the function of rapidly positioning and tapping the plastic and wood, and the cross groove can be matched with a screwdriver to conveniently and rapidly screw in the plastic and wood.

Description

Expansion pipe anti-loosening screw

Technical Field

The utility model relates to the field of screws, in particular to an expansion pipe anti-loosening screw.

Background

The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. The screw is the general expression of fastener, and the screw is indispensable industry necessities in daily life simultaneously.

1. Traditional screw is becoming flexible appearing easily after the twist, and the steadiness is relatively poor when making the screw use, and the screw is comparatively hard when twisting simultaneously.

2. The screw does not have the functions of positioning and quick screwing when screwed in, so that the screw is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a locking screw for an expansion pipe.

In order to achieve the purpose, the utility model adopts the following technical scheme: expansion pipe locking screw, including first screw rod, the side surface fixedly connected with back-off tooth of first screw rod, the one end fixedly connected with second screw rod that is close to the back-off tooth of first screw rod, the side surface of second screw rod is located the two teeth of right side fixedly connected with of back-off tooth.

As a further description of the above technical solution:

and one end of the first screw, which is far away from the second screw, is fixedly connected with a nut.

As a further description of the above technical solution:

the side surface of the nut is provided with a cross groove.

As a further description of the above technical solution:

the front surface of material case is provided with the observation window, and the observation window is transparent setting.

As a further description of the above technical solution:

the cross-sectional area of the second screw is decreased progressively in turn.

The utility model has the following beneficial effects:

1. compared with the prior art, the anti-loosening screw for the expansion pipe has the advantages that the inverted tooth and the double teeth are installed, the inverted tooth has the anti-skidding and loosening functions on plastic, and the double teeth are used for achieving the function of rapidly attacking plastic and wood.

2. Compared with the prior art, the expansion pipe anti-loosening screw has the tail tip for rapidly positioning and attacking plastic and wood, and the cross groove can be matched with the screwdriver to conveniently and rapidly screw in the plastic and wood.

Drawings

FIG. 1 is a schematic view of the overall structure of an expansion pipe anti-loosening screw according to the present invention;

FIG. 2 is a schematic structural view of a second screw of the expansion pipe anti-loosening screw according to the present invention;

FIG. 3 is a schematic structural view of the expansion tube locking screw shown in FIG. 1 at the position A;

fig. 4 is a schematic side view of the nut of the expansion tube check screw according to the present invention.

Illustration of the drawings:

1. a nut; 2. a first screw; 3. a back-off tooth; 4. a second screw; 5. double teeth; 6. a cross-shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the utility model provides an expansion pipe anti-loosening screw: including first screw rod 1, the side surface fixedly connected with back-off tooth 3 of first screw rod 2, when the device is using, utilize back-off tooth 3 to make the device difficult not hard up, the one end fixedly connected with second screw rod 4 that is close to back-off tooth 3 of first screw rod 2, the side surface of second screw rod 4 is located the two teeth 5 of the right side fixedly connected with of back-off tooth 3, it is comparatively laborsaving when twisting the use to make the device through two teeth 5, the one end fixedly connected with nut 1 of second screw rod 4 is kept away from to first screw rod 2, the side surface of nut 1 is equipped with cross slot 6, make things convenient for the staff to twist first screw rod 2 and second screw rod 4 fast, the cross-sectional area of second screw rod 4 subtracts progressively in proper order, because the afterbody of second screw rod 4 is sharper, can play the effect of location when the device is twisting the use.

The working principle is as follows: utilize the afterbody of second screw rod 4 to see to fix a position plastic, wood, after the location, utilize cross recess 6 to make the staff can cooperate and chew in batches, the bottle opener is twisted first screw rod 2 and second screw rod 4, during two teeth 5 on 4 surfaces of second screw rod, first screw rod 2 is comparatively convenient when the twist with second screw rod 4, utilizes back-off tooth 3 can effectively prevent that the first screw rod 2 of twist from taking place to become flexible with second screw rod 4 simultaneously.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. Expansion pipe check screw includes first screw rod (2), its characterized in that: the side surface fixedly connected with back-off tooth (3) of first screw rod (2), the one end fixedly connected with second screw rod (4) that is close to back-off tooth (3) of first screw rod (2), the side surface of second screw rod (4) is located the two teeth (5) of right side fixedly connected with of back-off tooth (3).

2. The expansion pipe lock screw of claim 1, wherein: one end of the first screw rod (2) far away from the second screw rod (4) is fixedly connected with a screw cap (1).

3. The expansion pipe lock screw of claim 2, wherein: the side surface of the nut (1) is provided with a cross groove (6).

4. The expansion pipe lock screw of claim 1, wherein: the cross sectional areas of the second screws (4) are sequentially decreased in a decreasing manner.