CN201420777Y

CN201420777Y - Half thread screw with female hole straight-line shaped oval countersunk head

Info

Publication number: CN201420777Y
Application number: CN2009201215607U
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 oval countersunk head, which comprises a screw body, wherein the screw body is provided with a rod part body anda 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 of the 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 concave convex 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, and the screw body adopts a second structure for a straight-line shaped oval countersunk head 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 screw body 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 into threads with different specifications, such as international threads, British standard threads, American standard threads, and the like.

Description

Be with female hole one word half countersunk partial thread screw

Technical field

The utility model relates to the technical field of hardware fastening, particularly is with female hole one word half countersunk partial thread screw.

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, provides a kind of novel structure, making is convenient, switching performance increases, structural strength jail and the female hole of band one word half countersunk partial thread screw applied widely.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: be with female hole one word half countersunk partial thread screw, 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 second structure of a word countersunk raised head shape body.

The measure of taking also comprises:

The second above-mentioned structure front end is shaped on the second bar portion body; The second bar portion body tail end is the second tail end body, and is shaped on a word translot of indent in the middle of the afterbody of this second tail end body; The interior shaggy tooth cell body that the second structure tail end is shaped on is second tapped hole, and this second tapped hole is positioned at the central position of the second 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 second structure of a word countersunk raised head shape body.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, be with female hole one word half countersunk partial thread screw, 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 second structure 12 of a word countersunk raised head shape body.

The utility model embodiment, shown in Fig. 1, Fig. 1 a, Fig. 1 b, the screw body is second structure 12 of a word countersunk raised head shape body, these second structure, 12 front ends are shaped on the second body 12a of bar portion; The second bar portion body 12a tail end is the second tail end body 12b, and is shaped on a word translot 12c of indent in the middle of the afterbody of this second tail end body 12b; The interior shaggy tooth cell body that second structure, 12 tail ends are shaped on is the second tapped hole 12d, and this second tapped hole 12d is positioned at the central position of the second tail end body 12b.

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, is with female hole one word half countersunk partial thread screw, 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 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 second structure (12) of a word countersunk raised head shape body.

2, the female hole of band according to claim 1 one word half countersunk partial thread screw, it is characterized in that: described second structure (12) front end is shaped on the second bar portion body (12a); Described second bar portion body (12a) tail end is the second tail end body (12b), and is shaped on a word translot (12c) of indent in the middle of the afterbody of this second tail end body (12b); The interior shaggy tooth cell body that described second structure (12) tail end is shaped on is second tapped hole (12d), and this second tapped hole (12d) is positioned at the central position of the described second tail end body (12b).