CN219045504U

CN219045504U - Countersunk head self-drilling screw

Info

Publication number: CN219045504U
Application number: CN202222557245.7U
Authority: CN
Inventors: 林鹏起; 张勇; 杨明; 谢忠超
Original assignee: Shanghai Hongting Fastener Manufacturing Co ltd
Current assignee: Shanghai Hongting Fastener Manufacturing Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-05-19
Anticipated expiration: 2032-09-27

Abstract

The application relates to a countersunk head self-drilling screw belongs to fastener production technical field, including the screw rod body, the top fixed mounting of screw rod body has the connector, be loaded with countersunk head on the connector, be provided with coupling assembling in the countersunk head, screw and bolt hole have been seted up in the top of connector run through, the bottom fixed mounting of countersunk head has a core rod, core rod threaded connection in the screw. This countersunk head bores tail screw through setting up the countersunk head portion of screw and the mutual demountable installation between the connector to provide the possibility that the screw was changed parts and is used, improve the utilization ratio of screw, through setting up the torsion when countersunk head portion of threaded connection and using the counter screw through the bolt, thereby guarantee assembled screw normal use, through setting up the synchronous use of a word groove and hexagonal groove of countersunk head portion, can use the screw with the help of multiple instrument, improved the universality of screw, make the in-service use of screw more convenient.

Description

Countersunk head self-drilling screw

Technical Field

The application relates to the technical field of fastener production, in particular to a countersunk head self-drilling screw.

Background

The screw refers to a tool for progressively fastening a machine part by utilizing the physical and mathematical principles of the inclined circular rotation and friction force of an object, and the screw is a general expression of a fastener and a daily spoken language.

The screw is the most common fastener, uses very extensively, but there is some inconvenience in the screw in the use, if can appear the smooth silk phenomenon under the state of screw tightening, lead to the fact the destruction to the cross screw thread mouth of screw, be inconvenient for follow-up use, and traditional screw is in order to guarantee to receive torsion balanced adoption integral type structure, has reduced the rate of utilization of screw, has put forward a countersunk head drill tail screw to this, solves the problem that above-mentioned proposes.

Disclosure of Invention

To the not enough of prior art, this application provides a countersunk head bores tail screw, possesses advantages such as being convenient for assemble and change use, has solved screw among the prior art structure as an organic whole, can't continue to use after the smooth silk condition appears in the use, problem that the rate of utilization is low.

In order to achieve the above purpose, the present application provides the following technical solutions: the countersunk head self-drilling screw comprises a screw body, wherein a connector is fixedly arranged at the top of the screw body, a countersunk head part is arranged on the connector, and a connecting assembly is arranged in the countersunk head part;

the connecting assembly comprises a screw hole and a bolt hole which are formed in the top of the connector, a mandrel is fixedly arranged at the bottom of the countersunk head part, and the mandrel is in threaded connection with the screw hole.

Through adopting above-mentioned technical scheme for can dismantle the installation each other between countersunk head portion and the connector, thereby provide the screw and change the possibility that the part used, improve the utilization ratio of screw.

Further, the holding groove has been seted up to the left and right sides of heavy head, the spout has been seted up on the inside wall of holding groove, coupling assembling is including fixed mounting the first spring on the holding groove inner wall, be provided with the bolt on the first spring.

Through adopting above-mentioned technical scheme for can accomplish between countersunk head portion and the connecting portion through the bolt and further connect stably.

Further, the first spring is kept away from fixed mounting has the butt plate on the one end of holding tank inner wall, butt plate fixed connection in the bolt, the bolt hole with the bolt grafting corresponds, the inside slidable mounting of spout has the slider, the slider with fixed mounting has the second spring between the inner wall of spout.

By adopting the technical scheme, rebound locking of the bolt can be realized, and the stability of bolt connection is further enhanced.

Further, a straight groove is formed in the top end of the connector, and a hexagonal groove is formed in the top end of the connector.

By adopting the technical scheme, the practicality of the countersunk head part can be improved, and the countersunk head part is convenient to use by being matched with various tools.

Further, one end of the sliding block, which faces the accommodating groove, is triangular, and the inclined direction of the triangular inclined surface faces one side of the connector.

Through adopting above-mentioned technical scheme for when the butt joint board slides towards one side of connector, can support gradually the slider, make the slider slide and return to the inside of spout.

Further, a clamping hole is formed in the bottom end of the bolt, and the length of the bolt is larger than the thickness of the connector.

Through adopting above-mentioned technical scheme, can make the bolt run through and extend to the outside of connector, the cooperation instrument lock in addition is accomplished the further activity restriction to the bolt in the card hole on the bolt.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this countersunk head bores tail screw through setting up the countersunk head portion of screw and the mutual demountable installation between the connector to provide the possibility that the screw was changed parts and is used, improve the utilization ratio of screw, through setting up the torsion when countersunk head portion of threaded connection and using the counter screw through the bolt, thereby guarantee assembled screw normal use, through setting up the synchronous use of a word groove and hexagonal groove of countersunk head portion, can use the screw with the help of multiple instrument, improved the universality of screw, make the in-service use of screw more convenient.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a top view of the connector of the present application;

FIG. 3 is an enlarged view of FIG. 1A of the present application;

fig. 4 is a top view of the connector of the present application.

In the figure: 1. a screw body; 2. a connector; 3. a countersunk head part; 4. a shaft core bar; 5. a screw hole; 6. a hexagonal groove; 7. a straight slot; 8. a receiving groove; 9. a chute; 10. a first spring; 11. a butt plate; 12. a plug pin; 13. a slide block; 14. a second spring; 15. a bolt hole; 16. and (5) clamping the hole.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1, a countersunk head self-drilling screw in this embodiment includes a screw body 1, a connector 2 is fixedly mounted at the top of the screw body 1, a countersunk head 3 is mounted on the connector 2, a connection component is disposed in the countersunk head 3, and detachment and separation of the countersunk head 3 and the connector 2 can be achieved through the connection component.

Referring to fig. 1-2, in the present embodiment, a slot 7 is formed on the top end of the connector 2, and a hexagonal slot 6 is also formed on the top end of the connector 2, so that the screw can be used by both a straight screwdriver and an internal hexagonal tool, and the use effect of the screw is improved.

Referring to fig. 3, in the present embodiment, receiving slots 8 are formed on the left and right sides of the countersunk head 3, a sliding slot 9 is formed on the inner side wall of the receiving slot 8, a first spring 10 is fixedly mounted on a side wall of the receiving slot 8 away from the connector 2, an abutment plate 11 is fixedly mounted on one end of the first spring 10 away from the inner wall of the receiving slot 8, and a plug pin 12 extending to the outer side of the bottom of the countersunk head 3 is fixedly mounted on the abutment plate 11.

A sliding block 13 is slidably arranged in the sliding groove 9, a second spring 14 is fixedly arranged between the sliding block 13 and the inner wall of the sliding groove 9, and the second spring 14 pushes the sliding block 13 to slide towards the inside of the accommodating groove 8, so that the sliding block 13 abuts against the side face of the abutting plate 11.

It should be noted that, the slider 13 is triangular toward one end of the accommodating groove 8, and the inclined direction of the triangular inclined plane is toward one side of the connector 2, so that when the abutment plate 11 slides toward one side of the connector 2, the slider 13 can be gradually abutted to the slider 13 so that the slider 13 slides and retreats to the inside of the chute 9.

Referring to fig. 4, in order to complete the connection between the countersunk head portion 3 and the connector 2, a screw hole 5 and a pin hole 15 are formed in the top portion of the connector 2 in the embodiment in a penetrating manner, the pin hole 15 and the pin 12 are in plug-in correspondence, and the pin 12 can penetrate through the pin 12 to extend to the outside of the countersunk head portion 3 and the pin hole 15 to complete the plug-in correspondence, so that the rotation limitation of the countersunk head portion 3 and the connector 2 is achieved.

In addition, the bottom of bolt 12 has seted up the draw-in hole, and the length of bolt 12 is greater than the thickness of connector 2, can make bolt 12 run through and extend to the outside of connector 2, uses the draw-in hole 16 of thumbtack lock on bolt 12 to accomplish the further activity restriction to bolt 12 simultaneously.

In this embodiment, the bottom of the countersunk head portion 3 is fixedly provided with a core rod 4, the core rod 4 is in threaded connection with the screw hole 5, the countersunk head portion 3 can be screwed up and installed on the connector 2 through rotation of the countersunk head portion 3, and the countersunk head portion 3 and the connector 2 can be installed and detached through the threaded connection relationship between the core rod 4 and the screw hole 5.

The working principle of the embodiment is as follows:

when the screw is used, the sliding wire phenomenon occurs, the tool is used for extending to the inside of the accommodating groove 8 to extrude the sliding block 13, the sliding block 13 extrudes the second spring 14 to slide to the inside of the sliding groove 9, after the abutting limit of the abutting plate 11 is released by the sliding block 13, the bolt 12 is pulled back to the inside of the accommodating groove 8 under the action of the elastic force of the first spring 10, the rotation limit between the countersunk head 3 and the connecting head 2 is lost, the countersunk head 3 can be rotated, the countersunk head 3 drives the shaft core rod 4 to rotate to be separated from the threaded connection relation between the connecting head 2, the new countersunk head 3 is replaced, the screw can be used continuously, after the new countersunk head 3 is connected to the connecting head 2 again in a threaded mode, the abutting plate 11 is pressed down by the tool, the abutting plate 11 slides towards one side of the connecting head 2 and extrudes the sliding block 13, when the abutting plate 11 slides to the position beyond the bottom of the sliding block 13, the position of the abutting plate 11 is limited by the sliding block 13 under the action of the sliding block 13, and the bolt 13 extends to limit the position of the abutting plate 11 under the action of the elastic force of the second spring 14, and the bolt 12 is limited, and the countersunk head 3 is limited to rotate.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. Countersunk head self-drilling screw, including screw rod body (1), its characterized in that: the top of the screw body (1) is fixedly provided with a connector (2), a countersunk head part (3) is loaded on the connector (2), and a connecting component is arranged in the countersunk head part (3);

the connecting assembly comprises a screw hole (5) and a bolt hole (15) which are formed in the top of the connector (2), a shaft core rod (4) is fixedly arranged at the bottom of the countersunk head (3), and the shaft core rod (4) is in threaded connection with the screw hole (5).

2. A countersunk head self-drilling screw as in claim 1, wherein: the accommodating groove (8) is formed in the left side and the right side of the countersunk head portion (3), the sliding groove (9) is formed in the inner side wall of the accommodating groove (8), the connecting assembly comprises a first spring (10) fixedly installed on the inner wall of the accommodating groove (8), and a plug pin (12) is arranged on the first spring (10).

3. A countersunk head self-drilling screw as in claim 2, wherein: the first spring (10) is kept away from fixed mounting has support plywood (11) on the one end of holding tank (8) inner wall, support plywood (11) fixed connection in bolt (12), bolt hole (15) with the grafting of bolt (12) corresponds, the inside slidable mounting of spout (9) has slider (13), slider (13) with fixed mounting has second spring (14) between the inner wall of spout (9).

4. A countersunk head self-drilling screw as in claim 1, wherein: a straight groove (7) is formed in the top end of the connector (2), and a hexagonal groove (6) is formed in the top end of the connector (2).

5. A countersunk head self-drilling screw as in claim 3, wherein: one end of the sliding block (13) facing the accommodating groove (8) is triangular, and the inclined direction of the triangular inclined plane faces one side of the connector (2).

6. A countersunk head self-drilling screw as in claim 1, wherein: the bottom of the bolt (12) is provided with a clamping hole (16), and the length of the bolt (12) is greater than the thickness of the connector (2).