CN214998711U

CN214998711U - Quincuncial groove type anti-theft fastener

Info

Publication number: CN214998711U
Application number: CN202120306882.XU
Authority: CN
Inventors: 董林; 刘维杰
Original assignee: Xinge Hardware Industry Kunshan Co ltd
Current assignee: Xinge Hardware Industry Kunshan Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-12-03
Anticipated expiration: 2031-02-03

Abstract

The utility model discloses a plum blossom cell type theftproof fastener, screw rod and nut including integrated into one piece, the circular shape recess has inwards been seted up to the top surface of nut, the bottom center of recess be equipped with towards the bellied reference column of top surface, be around the reference column for extending to the inclined plane of recess medial surface, the protruding extension that is the mountain peak form that is equipped with of equipartition on the circumference internal surface of recess, the extension includes the curved surface that symmetry and evagination set up, each be circular arc transitional coupling between the curved surface. The beneficial effects of the utility model are mainly embodied in that: the design is exquisite, and nine lamellas plum blossom type can make the screw aim at fast, and the practicality is strong. The arc transition between the curved surfaces can reduce stress concentration, prevent teeth from sliding easily and improve the butt joint installation efficiency. Meanwhile, the screws are difficult to open by using common wrenches in the market, so that the theft of the screws is greatly reduced, and the generation of adverse results is avoided. Meanwhile, compared with the existing screw, the screw has multiple directions and high assembly efficiency.

Description

Quincuncial groove type anti-theft fastener

Technical Field

The utility model relates to a screw technical field particularly, especially relates to a plum blossom cell type theftproof fastener.

Background

The screw is used as a standard fastener and widely applied to the fields of industry, civil use and the like, such as: for securing mechanical devices, components, etc. Screws are used in great quantities in production life and usually require tools for their mating to be installed or removed.

However, since the screws used at present are standard parts, they are easy to be stolen by general tools, especially in some outdoor products, because of many disadvantages in management, unnecessary troubles and losses are caused. In order to avoid the adverse effect caused by the theft of the screw, an anti-theft screw is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a plum blossom groove type anti-theft fastener.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a plum blossom cell type theftproof fastener, includes integrated into one piece's screw rod and nut, the circular shape recess has inwards been seted up to the top surface of nut, the bottom center of recess be equipped with towards the bellied reference column of top surface, be around the reference column for extending to the inclined plane of recess medial surface, the protruding extension that is the mountain peak form that is equipped with of equipartition on the circumference internal surface of recess, the extension includes the curved surface that symmetry and evagination set up, each be circular arc transitional coupling between the curved surface.

Preferably, the curvatures of the curved surfaces are different.

Preferably, the height of the inclined plane is smaller than that of the positioning column, and the positioning column does not exceed the top surface of the screw cap.

Preferably, the positioning column is round or irregularly shaped.

Preferably, the groove has a chamfer at the top surface.

Preferably, the nut is bowl-shaped, the top surface of the nut is provided with the groove, and the bottom of the nut is fixedly connected with the screw rod.

Preferably, the nut is bowl-shaped, the top surface of the nut is provided with the groove, the outer circumferential surface of the bottom of the nut is fixedly provided with the extending edge, and the axis of the nut is fixedly provided with the screw.

Preferably, the nut is rectangular, the top surface of the nut is provided with the groove, and the bottom of the nut is fixedly connected with the screw rod.

The beneficial effects of the utility model are mainly embodied in that: the design is exquisite, and nine lamellas plum blossom type can make the screw aim at fast, and the practicality is strong. The arc transition between the curved surfaces can reduce stress concentration, prevent teeth from sliding easily and improve the butt joint installation efficiency. Meanwhile, the screws are difficult to open by using common wrenches in the market, so that the theft of the screws is greatly reduced, and the generation of adverse results is avoided. Meanwhile, compared with the existing screw, the screw has multiple directions and high assembly efficiency.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the front view of the first preferred embodiment of the present invention;

FIG. 2: the left view of the first preferred embodiment of the present invention;

FIG. 3: the front view of the second preferred embodiment of the present invention;

FIG. 4: the left view of the second preferred embodiment of the present invention;

FIG. 5: the utility model discloses the front view of the third preferred embodiment;

FIG. 6: the utility model discloses the left side view of third preferred embodiment.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The first embodiment is as follows:

as shown in fig. 1-2, the utility model discloses a plum blossom cell type theftproof fastener, screw rod (not seen in the picture) and nut 1 including a body coupling, nut 1 is the bowl form, its bottom with the screw rod rigid coupling, its top surface have been seted up and have chamfer 21 in top surface department recess 2, recess 2's bottom center be equipped with towards the bellied reference column 3 of top surface, reference column 3 all around be for extending to the inclined plane 4 of 2 medial surfaces of recess, inclined plane 4 highly be less than reference column 3's height, reference column 3 is not in excess of nut 1's top surface. The positioning column and the inclined plane are arranged to prevent other wrenches from being placed in the positioning column and the inclined plane.

Nine extending parts 5 in a peak shape are uniformly and convexly arranged on the circumferential inner surface of the groove 2, each extending part 5 comprises symmetrical and convexly arranged curved surfaces 51, and the curved surfaces 51 are in arc transition connection. The nine extending parts in the shape of the mountain peaks form a nine-petal plum blossom shape, the nine-petal plum blossom shape can lead the screws to be aligned quickly, and the practicability is strong. Compared with the existing anti-theft screw, the arc transition between the curved surfaces can reduce stress concentration, so that the screw thread is not easy to slip, and the butt joint installation efficiency is improved; and the fracture is not easy to occur, and the service life is not influenced. Meanwhile, the screws are difficult to open by using common wrenches in the market, so that the theft of the screws is greatly reduced, and the generation of adverse results is avoided. Meanwhile, compared with the existing screw, the screw has multiple directions and high assembly efficiency.

In the above, the curvatures of the curved surfaces 51 are different, for example, one of the curved surfaces has a large curvature, or the curvatures of the curved surfaces show an increasing trend, so that a better anti-theft technical effect can be achieved. In addition, the positioning column 3 is round or irregular, and if the positioning column 3 is triangular or a protrusion is arranged on the positioning column, a fixed screw must be used, so that theft can be further prevented.

Example two:

as shown in fig. 3 to 4, the utility model discloses a plum blossom groove type anti-theft fastener, including the screw rod (not seen in the figure) and the nut 1 of integrative connection, nut 1 is the bowl form, has set firmly extension limit 11 on the outer periphery of its bottom, and its axis department sets firmly the screw rod. The top surface of the nut 1 is provided with a groove 2 with a chamfer 21 at the top surface, the center of the bottom of the groove 2 is provided with a positioning column 3 facing the top surface is convex, the periphery of the positioning column 3 is an inclined plane 4 extending to the inner side surface of the groove 2, the height of the inclined plane 4 is smaller than that of the positioning column 3, and the positioning column 3 is not more than the top surface of the nut 1. The positioning column and the inclined plane are arranged to prevent other wrenches from being placed in the positioning column and the inclined plane.

Nine extending parts 5 in a peak shape are uniformly and convexly arranged on the circumferential inner surface of the groove 2, each extending part 5 comprises symmetrical and convexly arranged curved surfaces 51, and the curved surfaces 51 are in arc transition connection. The nine extending parts in the shape of the mountain peaks form a nine-petal plum blossom shape, the nine-petal plum blossom shape can lead the screws to be aligned quickly, and the practicability is strong. Compared with the existing anti-theft screw, the arc transition between the curved surfaces can reduce stress concentration, the screw thread is not easy to slip, and the butt joint installation efficiency is improved. Meanwhile, the screws are difficult to open by using common wrenches in the market, so that the theft of the screws is greatly reduced, and the generation of adverse results is avoided. Meanwhile, compared with the existing screw, the screw has multiple directions and high assembly efficiency.

Example three:

as shown in fig. 5 to 6, the utility model discloses a plum blossom cell type theftproof fastener, screw rod (not seen in the picture) and nut 1 including a body coupling, nut 1 is the rectangle form, its bottom with the screw rod rigid coupling, its top surface have been seted up and have chamfer 21 in top surface department recess 2, recess 2's bottom center be equipped with towards the bellied reference column 3 of top surface, reference column 3 all around be for extending to the inclined plane 4 of 2 medial surfaces of recess, inclined plane 4 highly be less than reference column 3's height, reference column 3 is not in excess of nut 1's top surface. The positioning column and the inclined plane are arranged to prevent other wrenches from being placed in the positioning column and the inclined plane.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. Plum blossom cell type theftproof fastener, including integrated into one piece's screw rod and nut (1), its characterized in that: circular shape recess (2) have inwards been seted up to the top surface of nut (1), the bottom center of recess (2) be equipped with towards the bellied reference column of top surface (3), be around reference column (3) for extending to inclined plane (4) of recess (2) medial surface, the protruding extension (5) that are the mountain peak form that are equipped with of equipartition on the circumference internal surface of recess (2), extension (5) are including curved surface (51) that symmetry and evagination set up, each be circular arc transitional coupling between curved surface (51).

2. The quincuncial slot-type antitheft fastener of claim 1, characterized in that: the curved surfaces (51) have different curvatures.

3. The quincuncial slot-type antitheft fastener of claim 1, characterized in that: the height of the inclined plane (4) is smaller than that of the positioning column (3), and the positioning column (3) does not exceed the top surface of the nut (1).

4. The quincuncial slot-type antitheft fastener of claim 1, characterized in that: the positioning column (3) is round or irregular.

5. The quincuncial slot-type antitheft fastener of claim 1, characterized in that: the recess (2) has a chamfer (21) at the top surface.

6. The quincuncial slot type antitheft fastener according to any of claims 1 to 5, characterized in that: the nut (1) is bowl-shaped, the top surface of the nut is provided with the groove (2), and the bottom of the nut is fixedly connected with the screw rod.

7. The quincuncial slot type antitheft fastener according to any of claims 1 to 5, characterized in that: the nut (1) is bowl-shaped, the top surface of the nut is provided with the groove (2), the outer circumferential surface of the bottom of the nut is fixedly provided with an extending edge (11), and the axis of the nut is fixedly provided with the screw rod.

8. The quincuncial slot type antitheft fastener according to any of claims 1 to 5, characterized in that: the nut (1) is rectangular, the top surface of the nut is provided with the groove (2), and the bottom of the nut is fixedly connected with the screw rod.