CN201428706Y

CN201428706Y - Half-thread screw with female hole inner hexagonal truss head

Info

Publication number: CN201428706Y
Application number: CN2009201215575U
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: 2010-03-24
Anticipated expiration: 2019-06-01

Abstract

The utility model discloses a half-thread screw with a female hole inner hexagonal truss head, which comprises a screw body. The screw body has a rod part body and a tail end part body, which are integrally molded, wherein an external thread body with continuous outside recessed convex tooth-socket structure is axially fabricated at the head end of the rod part body, and the thread axial length ofthe external thread body is at most equal to two thirds of the length of the rod part body; an internal thread body with continuous inside recessed convex tooth-socket female hole structure is axially fabricated at the tail end of the screw body, and the length of the internal thread body is at least equal to the length of the tail end part body; and the screw body is an inner hexagonal truss head-shaped eighth structural body. An inwardly-recessed threaded hole is formed at the tail part and has novel structure and convenient fabrication, and the aperture of the inwardly-recessed threaded hole is moderate, so that the half-thread screw maintains the performance of the original screw and is added with the novel rear-part output connection mode without affecting the structural strength ofthe original screw. The screw thread of the threaded hole is processed in different specifications so as to meet the requirements for different connection modes, for example, metric screw thread, inchscrew thread, U.S. standard screw thread and the like.

Description

Partial thread screw with hexagonal oval head in female hole

Technical field

The utility model relates to the technical field of hardware fastening, particularly with the partial thread screw of hexagonal oval head in female hole.

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, the partial thread screw of hexagonal oval head in structural strength jail and the female hole of band applied widely.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: with the partial thread screw of hexagonal oval head in female hole, 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 the screw body is the 8th structure of interior hexagonal oval head shape body.

The measure of taking also comprises:

The 8th above-mentioned structure front end is shaped on the 8th bar portion body; The 8th bar portion body tail end is the 8th tail end body, and the 8th tail end body breech face is oblate spherical surface body, and is shaped on the hexagonal vertical core of indent in the middle of the afterbody of the 8th tail end body; The interior shaggy tooth cell body that the 8th structure tail end is shaped on is the 8th tapped hole, and the 8th tapped hole is positioned at the central position of the 8th 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 the screw body is the 8th structure of interior hexagonal oval 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, partial thread screw with hexagonal oval head in female hole, 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 the screw body is the 8th structure 18 of interior hexagonal oval head shape body.

The utility model embodiment, shown in Fig. 1, Fig. 1 a and Fig. 1 b, the screw body is that the 8th structure 18, the eight structures 18 front ends of interior hexagonal oval head shape body are shaped on the 8th body 18a of bar portion; The 8th bar portion body 18a tail end is the 8th tail end body 18b, and the 8th tail end body 18b breech face is oblate spherical surface body, and is shaped on the hexagonal vertical core 18c of indent in the middle of the afterbody of the 8th tail end body 18b; The interior shaggy tooth cell body that the 8th structure 18 tail ends are shaped on is the 8th tapped hole 18d, and the 8th tapped hole 18d is positioned at the central position of the 8th tail end body 18b.

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 partial thread screw of hexagonal oval head in female hole, 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 the 8th structure (18) of interior hexagonal oval head shape body.

2, the partial thread screw of hexagonal oval head in the female hole of band according to claim 1, it is characterized in that: described the 8th structure (18) front end is shaped on the 8th bar portion body (18a); Described the 8th bar portion body (18a) tail end is the 8th tail end body (18b), and the 8th tail end body (18b) breech face is oblate spherical surface body, and is shaped on the hexagonal vertical core (18c) of indent in the middle of the afterbody of the 8th tail end body (18b); The interior shaggy tooth cell body that described the 8th structure (18) tail end is shaped on is the 8th tapped hole (18d), and the 8th tapped hole (18d) is positioned at the central position of described the 8th tail end body (18b).