CN212838847U

CN212838847U - Special drill tail screw for aluminum door and window

Info

Publication number: CN212838847U
Application number: CN202021416646.5U
Authority: CN
Inventors: 赖仕佑
Original assignee: Foshan Faminjia Door & Window Co ltd
Current assignee: Foshan Faminjia Door & Window Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-03-30
Anticipated expiration: 2030-07-17

Abstract

The utility model provides a special brill tail screw of aluminium door and window, including screwhead, screw rod, the screwhead with be provided with the sealing washer between the screw rod, be equipped with on the screwhead and fill up the platform, fill up the inboard of platform and seted up slotted or cross recess or plum blossom groove, screw rod one end with fill up the platform and connect, the screw rod other end is equipped with the drill bit, the blade of 90 chamfers is seted up on the surface of drill bit, the surface of screw rod is around there being fine screw thread, and the one end of fine screw thread extends to the drill bit surface, the beneficial effects of the utility model reside in that: the structure is simple, the stability is good, the use is convenient, and the operation is simple; the sealing ring is arranged between the screw head and the screw rod, so that the phenomenon that the screw loosens and falls off in the use process can be effectively prevented, and the service life of the fastened connecting equipment parts is prolonged; the cutting edge that 90 chamfers were seted up on the surface of drill bit is sharper, increases high strength, durable lastingly.

Description

Special drill tail screw for aluminum door and window

[ technical field ] A method for producing a semiconductor device

The utility model relates to a screw technical field especially relates to a special brill tail screw of aluminium door and window.

Self-tapping screw, it is a kind of threaded fastener which self-drills the matched female thread in the pre-drilling hole of metal or non-metal material, self-tapping screw is used for the connection between the thin metal plates (steel plate, saw plate, etc.), when connecting, first make the threaded bottom hole to the connected piece, then screw the self-tapping screw into the threaded bottom hole of the connected piece, its screw thread is the ordinary screw thread with arc triangle section, the threaded surface also has higher hardness, so when connecting, the screw can also tap the internal thread in the threaded bottom hole of the connected piece, thus form the connection, the characteristic of this kind of screw is to have low screwing-in moment and high locking performance, have better working performance than ordinary self-tapping screw, and can replace the machine screw to use;

at present, the screw is easy to loosen and fall off in the use process, and the assembly parts connected by fastening are easy to loosen, so that the service life of the assembly parts connected by fastening is influenced, and unnecessary loss is caused.

[ Utility model ] content

The utility model aims to solve present screw generally in the use screw not hard up easily, drop, lead to easily that the assembly part of fastening the connection is not hard up to the influence is fastened the life of connection assembly part, causes the not enough and novel special brill tail screw of aluminium door and window that provides of unnecessary loss.

The utility model discloses a realize through following technical scheme:

the utility model provides a special brill tail screw of aluminium door and window, includes screwhead, screw rod, the screwhead with be provided with the sealing washer between the screw rod, be equipped with on the screwhead and fill up the platform, fill up the inboard of platform and seted up slotted or cross recess or plum blossom groove, screw rod one end with fill up the bench connection, the screw rod other end is equipped with the drill bit, the blade of 90 chamfers is seted up on the surface of drill bit, the surface of screw rod is around there being fine screw thread, and the one end of fine screw thread extends to the drill bit surface.

Further, the diameter of the sealing ring is larger than that of the cushion table.

Further, the surface of the drill is surrounded by fine threads, which are in line with the fine threads of the screw shank.

Further, the fine thread diameter of the screw shank surface is 4.2 mm.

Further, the diameter of the milling cutter type drill bit on the surface of the drill bit is 2.8-3.2 mm.

Further, the angle of the fine thread meridian is 90 ° or 60 °.

Furthermore, the pad table is in a shape of a hexagonal pad table, a cross flat head pad table or a plum blossom pan head pad table.

The beneficial effects of the utility model reside in that:

(1) the structure is simple, the stability is good, the use is convenient, and the operation is simple;

(2) the sealing ring is arranged between the screw head and the screw rod, so that the phenomenon that the screw loosens and falls off in the use process can be effectively prevented, and the service life of the fastened connecting equipment parts is prolonged;

(3) the cutting edge that 90 chamfers were seted up on the surface of drill bit is sharper, increases high strength, durable lastingly.

[ description of the drawings ]

FIG. 1 is a schematic view of the structure of the self-drilling screw for aluminum doors and windows of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the self-drilling screw for aluminum doors and windows of the present invention;

reference numerals: 1. a screw head; 11. a cushion table; 110. a straight groove or a cross groove or a plum blossom groove; 2. a screw shaft; 21. fine threads; 3. a seal ring; 4. a drill bit; 41. and (7) cutting edges.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 and 2, a special brill tail screw of aluminium door and window, including screwhead 1, screw rod 2, screwhead 1 with be provided with sealing washer 3 between screw rod 2, be equipped with cushion table 11 on screwhead 1, a straight line groove or cross recess or plum blossom groove 110 have been seted up to cushion table 11's inboard, 1 one end of screw rod with cushion table 11 connects, the 1 other end of screw rod is equipped with drill bit 4, the blade 41 of 90 chamfers is seted up on the surface of drill bit 4, the surface of screw rod 2 is surrounded there is fine screw thread 21, and the one end of fine screw thread 21 extends to drill bit 4 surfaces.

Preferably, the diameter of the sealing ring 3 is larger than the diameter of the pad 11.

Preferably, the surface of the drill 4 is surrounded by a fine thread, which is identical to the fine thread 21 of the screw shaft 2.

Preferably, the fine thread diameter of the surface of the screw shaft 2 is 4.2 mm.

Preferably, the diameter of the drill bit on the surface of the drill bit 4 is 2.8-3.2 mm.

Preferably, the fine thread 21 has an angle of 90 ° or 60 °.

Preferably, the pad table 11 is in the shape of a hexagonal pad table, a cross flat head pad table, or a quincunx pan head pad table.

Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a special brill tail screw of aluminium door and window, includes screwhead, screw rod, the screwhead with be provided with the sealing washer between the screw rod, be equipped with on the screwhead and fill up the platform, fill up the inboard of platform and seted up word groove or cross recess or plum blossom groove, its characterized in that: screw rod one end with fill up the platform and connect, the screw rod other end is equipped with the drill bit, the blade of 90 chamfers is seted up on the surface of drill bit, the surface of screw rod is around having fine screw thread, and the one end of fine screw thread extends to the drill bit surface.

2. The special self-drilling screw for aluminum doors and windows according to claim 1, which is characterized in that: the diameter of the sealing ring is larger than that of the cushion table.

3. The special self-drilling screw for aluminum doors and windows according to claim 1, which is characterized in that: the surface of the drill bit is surrounded by fine threads which are congruent with the fine threads of the screw shank.

4. The special self-drilling screw for aluminum doors and windows according to claim 1, which is characterized in that: the fine thread diameter of the screw rod surface is 4.2 mm.

5. The special self-drilling screw for aluminum doors and windows according to claim 3, which is characterized in that: the fine thread diameter of the drill bit face is 3.2 mm.

6. The special self-drilling screw for aluminum doors and windows according to claim 1, which is characterized in that: the angle of the fine thread meridian is 90 degrees or 60 degrees.

7. The special self-drilling screw for aluminum doors and windows according to claim 1, which is characterized in that: the pad platform is in the shape of a hexagonal pad platform, a cross flat head pad platform and a plum blossom pan head pad platform.