CN201420778Y

CN201420778Y - Half thread screw with female hole straight-line shaped countersunk head root-removal structure

Info

Publication number: CN201420778Y
Application number: CN2009201215611U
Authority: CN
Inventors: 陆昱森; 陆颂荫
Original assignee: Ningbo Donggang Fastener Manufacturing Co Ltd
Current assignee: Ningbo Donggang Fastener Manufacturing Co Ltd
Priority date: 2009-06-01
Filing date: 2009-06-01
Publication date: 2010-03-10
Anticipated expiration: 2019-06-01

Abstract

The utility model discloses a half thread screw with a female hole straight-line shaped countersunk head root-removal structure, which comprises a screw body, wherein the screw body is provided with arod part body and a tail end part body which are integrally molded, continuous external thread bodies with outwardly concave convex tooth space structures are radially manufactured at the head end ofthe rod part body, and the thread axial length of each external thread body is at most equal to two thirds the length of the rod part body; and continuous internal thread bodies with inwardly concaveconvex tooth space female hole structures are axially manufactured at the tail end of the screw body, the length of each internal thread body is at least equal to that of the tail end part body, andthe screw body adopts a third structure for a straight-line shaped countersunk head root-removal structure shape body. Since inwardly concave thread holes are manufactured at the tail part, the structure is novel, and the manufacture is convenient; the apertures of the inwardly concave thread holes are proper, a new rear output connection method is added when the performance of the original screwbody is retained, and the structural strength of the original screw body is not affected; and the requirements of different connection methods can be further met by manufacturing the thread holes intothreads with different specifications, such as international threads, British standard threads, American standard threads, and the like.

Description

With the disappear partial thread screw of root architecture of female hole one word countersunk head

Technical field

The utility model relates to the technical field of hardware fastening, particularly with the disappear partial thread screw of root architecture of female hole one word countersunk head.

Background technique

General fastening pieces such as screw traditionally, it mainly utilizes, and a body of the screw thread of bar portion and afterbody is realized unidirectionally tightening, and tight etc. being fastenedly connected, so inherent characteristic according to these fastening pieces, we know that its ways of connecting is unidirectional, and if realize the secondary pairing of afterbody, or secondary connects, and it structurally is difficult to reach, as carrying out the secondary pairing of fastening piece afterbody really, must carry out hole processing or rod member welding operation to original fastening piece; When the actual production line was operated, it had inconvenience more like this, and working efficiency is also comparatively low.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, the partial thread screw of provide a kind of novel structure, making is convenient, switching performance increases, structural strength jail and the female hole of band one word countersunk head applied widely disappear root architecture.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: with the disappear partial thread screw of root architecture of female hole one word countersunk head, comprise the screw body, this screw body has integrated bar portion's body and tail end body, bar portion body head end radially is shaped on the outside thread body of continuous outer concavo-convex teeth groove structure, and the screw thread axial length of this outside thread body equals 2/3rds of bar portion body length at the most; Screw body tail end axially is shaped on the internal thread body of the female hole structure of continuous interior shaggy tooth groove, and the length of this internal thread body equals the length value of tail end body at least, and described screw body is disappear the 3rd structure of root architecture shape body of a word countersunk head.

The measure of taking also comprises:

The 3rd above-mentioned structure front end is shaped on the 3rd bar portion body; The 3rd bar portion body tail end is the 3rd tail end body, and is shaped on the 31 word translot of indent in the middle of the afterbody of the 3rd tail end body; The interior shaggy tooth cell body that the 3rd structure tail end is shaped on is the 3rd tapped hole, and the 3rd tapped hole is positioned at the central position of the 3rd tail end body.

Compared with prior art, the utility model comprises the screw body, this screw body has integrated bar portion's body and tail end body, bar portion body head end radially is shaped on the outside thread body of continuous outer concavo-convex teeth groove structure, and the screw thread axial length of this outside thread body equals 2/3rds of bar portion body length at the most; Screw body tail end axially is shaped on the internal thread body of the female hole structure of continuous interior shaggy tooth groove, and the length of this internal thread body equals the length value of tail end body at least, and described screw body is disappear the 3rd structure of root architecture shape body of a word countersunk head.Advantage of the present utility model is: adopts and is shaped on concave screw hole at afterbody, and its novel structure, it is convenient to make; Its aperture of concave screw hole is moderate, when keeping former screw body performance, has increased new rear portion output Placement, and also can not influence the structural strength of former screw body; This tapped hole is made the engage thread of different size, and then can satisfy different Placements, as metric thread, inch screw thread, U.S. standard screw thread etc.

Description of drawings

Fig. 1 is vertical cross-sectional schematic of the utility model embodiment

Fig. 1 a is that schematic representation is looked on the left side of Fig. 1;

Fig. 1 b is the schematic three dimensional views of Fig. 1.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

The utility model embodiment, with the disappear partial thread screw of root architecture of female hole one word countersunk head, comprise the screw body, the screw body has integrated bar portion's body and tail end body, bar portion body head end radially is shaped on the outside thread body of continuous outer concavo-convex teeth groove structure, and the screw thread axial length of this outside thread body equals 2/3rds of bar portion body length at the most; Screw body tail end axially is shaped on the internal thread body of the female hole structure of continuous interior shaggy tooth groove, and the length of this internal thread body equals the length value of tail end body at least, and described screw body is disappear the 3rd structure 13 of root architecture shape body of a word countersunk head.

The utility model embodiment, shown in Fig. 1, Fig. 1 a, Fig. 1 b, the screw body is that disappear the 3rd structure 13, the three structures 13 front ends of root shape body of a word countersunk head are shaped on the 3rd body 13a of bar portion; The 3rd bar portion body 13a tail end is the 3rd tail end body 13b, and is shaped on the 31 word translot 13c of indent in the middle of the afterbody of the 3rd tail end body 13b; The interior shaggy tooth cell body that the 3rd structure 13 tail ends are shaped on is the 3rd tapped hole 13d, and the 3rd tapped hole 13d is positioned at the central position of the 3rd tail end body 13b.

Advantage of the present utility model is: adopts and is shaped on concave screw hole at afterbody, and its novel structure, it is convenient to make; Its aperture of concave screw hole is moderate, when keeping former screw body performance, has increased new rear portion output Placement, and also can not influence the structural strength of former screw body; This tapped hole is made the engage thread of different size, and then can satisfy different Placements, as metric thread, inch screw thread, U.S. standard screw thread etc.

Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.

Claims

1, with the disappear partial thread screw of root architecture of female hole one word countersunk head, comprise the screw body, described screw body has integrated bar portion's body and tail end body, it is characterized in that: described bar portion body head end radially is shaped on the outside thread body of continuous outer concavo-convex teeth groove structure, and the screw thread axial length of this outside thread body equals 2/3rds of bar portion body length at the most; Described screw body tail end axially is shaped on the internal thread body of the continuous female hole structure of interior shaggy tooth groove, and the length of this internal thread body equals the length value of tail end body at least, and described screw body is disappear the 3rd structure (13) of root architecture shape body of a word countersunk head.

2, the female hole of the band according to claim 1 one word countersunk head partial thread screw of root architecture that disappears, it is characterized in that: described the 3rd structure (13) front end is shaped on the 3rd bar portion body (13a); Described the 3rd bar portion body (13a) tail end is the 3rd tail end body (13b), and is shaped on the 31 word translot (13c) of indent in the middle of the afterbody of the 3rd tail end body (13b); The interior shaggy tooth cell body that described the 3rd structure (13) tail end is shaped on is the 3rd tapped hole (13d), and the 3rd tapped hole (13d) is positioned at the central position of described the 3rd tail end body (13b).