CN218817470U

CN218817470U - Countersunk head scrap scraping drill tail screw

Info

Publication number: CN218817470U
Application number: CN202222881829.XU
Authority: CN
Inventors: 林志勤; 金志顺; 薛建东; 施碎正
Original assignee: Shanghai Hongting Fastener Manufacturing Co ltd
Current assignee: Shanghai Hongting Fastener Manufacturing Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-07
Anticipated expiration: 2032-10-31

Abstract

The application relates to the technical field of fasteners, and discloses a countersunk head scrap scraping drill screw, including fixed cylinder, the outside fixedly connected with of fixed cylinder extends the post, the outside fixedly connected with connector of fixed cylinder. This bits brill tail screw is scraped to countersunk head, through the cutting edge, the cooperation of external screw thread and stopping strip is used, curved cutting edge is difficult for the delivery of goods to warp crooked when punching the fastening, the life of cutting edge has been improved, can increase area of contact again, fastening effect has been improved, the external screw thread can and the installed part between in close contact with, fully take place the contact, receiving the activity, receive the restriction of installed part, locking performance has been improved, the stopping strip makes the countersunk head to scrape bits brill tail screw and only can rotate towards installation fastening direction, reverse rotation can receive the friction between right triangle's stopping strip and the installed part and hinder, the circumstances that the countersunk head was scraped bits and is bored the tail screw atress and take place not hard up has been avoided as far as possible.

Description

Countersunk head scrap scraping drill tail screw

Technical Field

The application relates to the technical field of fasteners, in particular to a countersunk head scrap scraping drill tail screw.

Background

The screw is a component for construction machinery, the tail end of the screw is sharp like a nail, a small cylindrical or conical metal rod is provided with a threaded part, the threaded part is provided with a head with a groove or a recess, the screw is used independently, the screw is detected from a wire of the screw, the quality of a precision screw is directly related to the wire for producing the screw, and the screw can be classified into a machine screw, a self-tapping screw, a self-drilling screw, a wallboard screw, a fiberboard screw, a wood screw and the like according to names.

At realizing this application in-process, the inventor discovers that there is following problem at least in this technique, and current countersunk head scrapes the bits and bores tail screw at the fastening in-process, and the cutting part that the bits were scraped to the countersunk head and bore tail screw is vertical, and the area of contact that leads to the cutting part is little, and under receiving external force or last time fastening work, the countersunk head scrapes the bits and bores tail screw and can take place to become flexible gradually for the fastening effect reduces gradually, and it is inconvenient to use, so proposed a countersunk head and scraped the bits and bore tail screw and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, this application provides a countersunk head scrapes bits and bores tail screw, possesses the advantage of avoiding taking place not hard up as far as possible, has solved the problem that takes place not hard up influence fastening effect easily.

In order to achieve the purpose of avoiding the looseness as much as possible, the application provides the following technical scheme: the utility model provides a bits brill tail screw is scraped to countersunk head, includes fixed cylinder, the outside fixedly connected with of fixed cylinder extends the post, the outside fixedly connected with connector of fixed cylinder, the surface that extends the post is provided with the coupling mechanism who has improved the locking performance of bits brill tail screw is scraped to countersunk head, coupling mechanism includes cutting edge, external screw thread and stopping strip, cutting edge fixed connection is at the surface that extends the post, external screw thread fixed connection is at the surface of fixed cylinder, stopping strip fixed connection is at the surface of connector.

Through adopting above-mentioned technical scheme, the cutting edge can punch, increase area of contact, threaded connection's installed part zonulae occludens can be with it to the external screw thread, increase area of contact, triangle-shaped stopping strip makes the countersunk head scrape the bits and bore tail screw and only can rotate towards the inclined plane direction of triangle-shaped stopping strip, if rotatory towards another direction, can receive stopping strip and installed part postcontact resistance, has avoided the countersunk head to scrape the bits and has bored the circumstances that takes place not hard up after the tail screw fastening.

Further, the shape of cutting edge is the arc, external screw thread is in fixed connection in the surface of fixed cylinder with screw mode, cutting edge and external screw thread fixed connection.

Through adopting above-mentioned technical scheme, spiral mode area of contact is big, and restriction countersunk head that can be better scrapes the not hard up of bits brill tail screw.

Further, the external screw thread cross section is triangle-shaped, the connector cross section is isosceles trapezoid, the one end that the connector is close to fixed cylinder equals with the diameter of fixed cylinder.

Through adopting above-mentioned technical scheme, the external screw thread of cross section triangle-shaped makes and is the inclined plane with the installed part contact surface to be convenient for enter into in the installed part.

Furthermore, chip grooves corresponding to the cutting edges are formed in the outer surfaces of the fixed cylinder and the outer threads, and the chip grooves are arc-shaped.

By adopting the technical scheme, the scrap discharge groove is formed, so that the scraps can be conveniently discharged from the scrap discharge groove, and the influence of the scraps on punching on the cutting edge is avoided as much as possible.

Furthermore, the cross section of each stopping strip is a right triangle, and the stopping strips are uniformly distributed on the outer surface of the connector in an annular array mode.

Through adopting above-mentioned technical scheme, right angled triangle's stopping strip makes countersunk head scrap scraping drill tail screw only can twist towards the installation direction and move, when twisting in the opposite direction, can receive the hindrance of stopping strip to restriction countersunk head scrap scraping drill tail screw's not hard up has played good fastening effect.

Furthermore, a slot is formed in one side, away from the fixed column body, of the connector, and the cross section of the slot is in a cross shape.

By adopting the technical scheme, the slot is formed, so that the connector can be conveniently connected.

Further, the fixed cylinder and the connector are provided with heat dissipation holes, the heat dissipation holes are communicated with the slots, and the cross sections of the heat dissipation holes are circular.

Through adopting above-mentioned technical scheme, the louvre can dispel the heat to the inside of fixed cylinder and connector, has avoided influencing the life of countersunk head scrap scraping drill tail screw because of the unable effluvium of heat that rotary friction brought as far as possible.

Furthermore, one side of the connector far away from the fixed column body is spliced with a protective cover, the inner wall of the protective cover is fixedly connected with a cutting strip spliced with the connector, and the cross section of the cutting strip is in a cross shape.

Through adopting above-mentioned technical scheme, the protective cover can protect the countersunk head scrap scraping drill tail screw after the fastening, avoids other materials to enter into and scrapes the circumstances that causes the countersunk head scrap scraping drill tail screw surface to damage in the scrap scraping drill tail screw as far as possible.

Compared with the prior art, this application provides a countersunk head scrapes bits and bores tail screw, possesses following beneficial effect:

1. this bits brill tail screw is scraped to countersunk head, through the cutting edge, the cooperation of external screw thread and stopping strip is used, curved cutting edge is difficult for the delivery of goods to warp crooked when punching the fastening, the life of cutting edge has been improved, can increase area of contact again, fastening effect has been improved, the external screw thread can and the installed part between in close contact with, fully take place the contact, receiving the activity, receive the restriction of installed part, locking performance has been improved, the stopping strip makes the countersunk head to scrape bits brill tail screw and only can rotate towards installation fastening direction, reverse rotation can receive the friction between right triangle's stopping strip and the installed part and hinder, the circumstances that the countersunk head was scraped bits and is bored the tail screw atress and take place not hard up has been avoided as far as possible.

2. This bits screw of boring tail is scraped to countersunk head, through chip groove and louvre, the chip groove can discharge the sweeps, avoid the sweeps to lead to the temperature to rise and take place to warp in cutting edge department gathering as far as possible, improved the countersunk head and scraped the life that the bits screw of boring tail, the louvre can dispel the heat to the inside of fixed cylinder and connector, conveniently discharge the heat, through setting up the protective cover and inserting the strip, the protective cover can protect the connector surface, avoid other impurity to enter into the head and scrape the bits screw surface of boring tail and cause the damage as far as possible.

Drawings

FIG. 1 is a schematic front view of the structure of the present application;

FIG. 2 is a perspective view of a retaining strip according to the present application;

FIG. 3 is a side view of the structural joint of the present application;

fig. 4 is a perspective view of a protective cover according to the present application.

In the figure: 1. fixing the column; 2. an extension column; 3. a blade; 4. an external thread; 5. a chip groove; 6. a connector; 7. a backstop strip; 8. a slot; 9. a protective cover; 10. cutting; 11. and (4) heat dissipation holes.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

Referring to fig. 1, a countersunk head scrap scraping drill screw comprises a fixed cylinder 1, an extension cylinder 2 fixedly connected to the outer side of the fixed cylinder 1, and a connector 6 fixedly connected to the outer side of the fixed cylinder 1 for connecting structural components. The 6 cross sections of connector are isosceles trapezoid, and the one end that connector 6 is close to fixed cylinder 1 equals with the diameter of fixed cylinder 1, makes things convenient for connector 6 to enter into the installed part and fastens work.

Please refer to fig. 1, the outer surface of the extension column 2 is provided with a connection mechanism for improving the anti-loosening performance of the countersunk head chip-scraping drill tail screw, the connection mechanism comprises a cutting edge 3, an external thread 4 and a stopping strip 7, the cutting edge 3 is fixedly connected to the outer surface of the extension column 2, the cutting edge 3 is arc-shaped, the arc-shaped cutting edge 3 can improve the strength, the cutting edge 3 is not easy to deform when drilling, the service life is prolonged, the contact area can be increased, and the fastening performance of the countersunk head chip-scraping drill tail screw is obviously improved.

Wherein, 4 fixed connection of external screw thread are at the surface of stationary cylinder 1, and external screw thread 4 is at the surface of stationary cylinder 1 with screw mode fixed connection, and the screw mode can increase area of contact, and then fully takes place the contact, has improved the fastening performance that the countersunk head scraped bits bores the tail screw. Cutting edge 3 and external screw thread 4 fixed connection, 4 cross sections of external screw thread are triangle-shaped, and the triangle-shaped external screw thread 4 of cross section makes to be the inclined plane with the installed part contact surface to be convenient for enter into in the installed part.

Please refer to fig. 1, the outer surfaces of the fixed cylinder 1 and the external thread 4 are both provided with a chip groove 5 corresponding to the blade 3, and the chip groove 5 is arc-shaped. The screw bit is used for discharging the waste chips, and the situation that the service performance of the screw bit with the countersunk head and the chip scraping drill tail is influenced by overhigh temperature caused by the fact that the waste chips are gathered at the cutting edge 3 is avoided as much as possible.

Referring to fig. 1-2, the stopping strip 7 is fixedly connected to the outer surface of the connector 6, the cross section of the stopping strip 7 is a right triangle, and the stopping strip 7 of the right triangle enables the countersunk head chip scraping drill tail screw to rotate only in the fastening direction, and when the countersunk head chip scraping drill tail screw is screwed in the opposite direction, the countersunk head chip scraping drill tail screw is hindered by friction between the stopping strip 7 and the mounting piece, so that the loosening of the countersunk head chip scraping drill tail screw is limited, and a good fastening effect is achieved. The stopping strips 7 are uniformly distributed on the outer surface of the connector 6 in an annular array mode, so that the stopping performance of the countersunk head scrap scraping drill screw is obviously improved, and the countersunk head scrap scraping drill screw is not easy to loosen.

Referring to fig. 3-4, a slot 8 is formed on a side of the connector 6 away from the fixing post 1 to facilitate insertion of a tool into the connector 6. The cross section of the slot 8 is cross-shaped, one side of the connector 6 far away from the fixing column body 1 is spliced with a protective cover 9, the protective cover 9 can protect the connector 6, impurities are prevented from entering the outer surface of the countersunk head scrap-scraping drill-tail screw to cause damage, and the service life of the countersunk head scrap-scraping drill-tail screw is prolonged. The inner wall of the protective cover 9 is fixedly connected with a strip 10 inserted with the connector 6, and a slot 8 is formed to facilitate the insertion with the connector 6. The cross section of the cutting 10 is cross-shaped.

In addition, the heat dissipation holes 11 have been all seted up to the inside of fixed cylinder 1 and connector 6, and the heat dissipation holes 11 can be dispelled the heat to the inside of fixed cylinder 1 and connector 6, let the heat discharge in the heat dissipation holes 11, have avoided influencing the performance that the bits scrap bit broke drill tail screw because of the high temperature as far as possible. The cross section of the heat dissipation hole 11 is circular, and the heat dissipation hole 11 is communicated with the slot 8.

The working principle of the embodiment is as follows:

this countersunk head scrap scraping bores tail screw, with cutting edge 3 and installed part contact, insert the connector 6 with the instrument again on, the rotatory cutting edge 3 that drives of instrument is rotatory installs fastening work, along with the rotation of cutting edge 3, in connector 6 and stopping strip 7 enter into the installed part, then will insert strip 10 and slot 8 align and insert connector 6 on, protective cover 9 gives the connector 6 and seals.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a countersunk head scrapes bits and bores tail screw, includes fixed cylinder (1), the outside fixedly connected with of fixed cylinder (1) extends post (2), the outside fixedly connected with connector (6) of fixed cylinder (1), its characterized in that: the outer surface of the extension column (2) is provided with a connecting mechanism which improves the anti-loosening performance of the countersunk head chip scraping drill tail screw;

coupling mechanism includes cutting edge (3), external screw thread (4) and stopping strip (7), cutting edge (3) fixed connection is at the surface that extends post (2), external screw thread (4) fixed connection is at the surface of fixed cylinder (1), stopping strip (7) fixed connection is at the surface of connector (6).

2. The countersunk chip-scraping drill-tail screw according to claim 1, wherein: the cutting edge (3) is arc-shaped, the external thread (4) is fixedly connected to the outer surface of the fixed cylinder (1) in a spiral mode, and the cutting edge (3) is fixedly connected with the external thread (4).

3. The countersunk bit-tail screw of claim 1, wherein: the cross section of the external thread (4) is triangular, the cross section of the connector (6) is isosceles trapezoid, and one end, close to the fixed column body (1), of the connector (6) is equal to the diameter of the fixed column body (1).

4. The countersunk bit-tail screw of claim 1, wherein: the outer surfaces of the fixed cylinder (1) and the external threads (4) are provided with chip grooves (5) corresponding to the cutting edges (3), and the chip grooves (5) are arc-shaped.

5. The countersunk chip-scraping drill-tail screw according to claim 1, wherein: the cross section of the retaining strip (7) is a right-angled triangle, and the retaining strip (7) is uniformly distributed on the outer surface of the connector (6) in an annular array mode.

6. The countersunk chip-scraping drill-tail screw according to claim 1, wherein: one side of the connector (6) far away from the fixed column body (1) is provided with a slot (8), and the cross section of the slot (8) is in a cross shape.

7. The countersunk shear drill-tail screw of claim 6, wherein: heat dissipation holes (11) are formed in the fixing columns (1) and the connector (6), the heat dissipation holes (11) are communicated with the slots (8), and the cross sections of the heat dissipation holes (11) are circular.

8. The countersunk chip-scraping drill-tail screw according to claim 1, wherein: one side that fixed cylinder (1) was kept away from in connector (6) is pegged graft and is had protective cover (9), cutting (10) of pegging graft with connector (6) are connected to the inner wall fixedly of protective cover (9), cutting (10) cross section is the cross.