CN201433984Y

CN201433984Y - fastening screw

Info

Publication number: CN201433984Y
Application number: CN2009201248899U
Authority: CN
Inventors: 任旭辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-21
Filing date: 2009-07-21
Publication date: 2010-03-31
Anticipated expiration: 2019-07-21

Abstract

The utility model discloses a fastening screw which is composed of a screw head (1), a cone (6) and a screw rod integrated with the screw head (1) into a whole; the end surface of the screw head (1) is connected with the screw rod and is provided with a flange plate (2); the screw rod comprises a polish rod I (7) and a thread rod (4); the polish rod I (7) is positioned between the flange plate (2)and the thread rod (4); a segment of polish rod II (5) is arranged between the thread rod (4) and the cone (6); a gasket (3) is nested on the polish rod I (7); and the inner ring diameter of the gasket (3) is slightly less than the large diameter of the upper thread of the thread rod (4). The fastening screw has the advantages that: the fastening screw has good guiding performance and can betterfix the relative position of two parts, the fastening screw has more simple and convenient assembly, and the assembly efficiency is greatly improved.

Description

A kind of Cock screw

Technical field:

The utility model relates to a kind of threaded connector, specifically is a kind of Cock screw that various component are installed and located that can be used for.

Background technique:

Cock screw all is mounted in the tapped hole of being located on the component usually, and its main effect is exactly to fix two relative positions between the part.At present, the prior art Cock screw generally by screw head and with screw head be that holistic screw rod constitutes; Described screw rod bottom is a cone; Described screw head is connected with a flange plate near on the end face of screw rod.There are two deficiencys in actual applications in the Cock screw of above-mentioned prior art: though the cone of 1 screw rod bottom can play certain leading role to screw rod in the installation process of Cock screw, but, because the cone of screw rod bottom is all smaller usually, therefore cause guide effect not good, thereby influence Cock screw fixing the relative position between two parts; 2, in order to prevent that flange plate in the above-mentioned Cock screw from directly contacting with connected piece and cause the wearing and tearing of flange plate in long-time using process, we generally can be before Cock screw uses, packing ring of socket on the screw rod of Cock screw in advance, though the wear problem of flange plate has obtained good solution in the above-mentioned Cock screw, but, because Cock screw all needed socket packing ring on its screw rod in advance before using, therefore, above-mentioned Cock screw troublesome poeration not only in assembly process, but also the serious efficient that reduces assembling.

The model utility content:

The technical problems to be solved in the utility model is, provides a kind of not only steering capability better, can fix two relative positions between the part better, and assembling is simple more, convenient, the Cock screw that efficiency of assembling improves greatly.

Technical solution of the present utility model is, a kind of Cock screw with following structure is provided, it by screw head, cone and with screw head be that holistic screw rod constitutes; The end face that described screw head is connected with screw rod is provided with flange plate; Described screw rod comprises polished rod I and threaded stem two-part; Described polished rod I is between flange plate and threaded stem; Between described threaded stem and the cone one section polished rod II; Be with a packing ring on the described polished rod I; The inner ring diameter of described packing ring is slightly less than the big footpath of screw thread on the threaded stem.

After adopting above structure, compare, the utlity model has following advantage with the prior art pressure:

1, in screw rod bottom cone to be set directly different with prior art, because the utility model is provided with one section polished rod II between threaded stem and cone, in other words, the position that is used on the Cock screw playing the guiding role increases greatly, therefore, steering capability of the present utility model has obtained improving greatly, thereby can fix two relative positions between the part better.

2, because between threaded stem described in the utility model and the flange plate is one section polished rod I, and be with a packing ring on the described polished rod I, the internal diameter of described packing ring is slightly less than the big footpath of screw thread on the threaded stem, therefore, described packing ring can become the integral body of a complete use with the utility model under the stopping of the screw thread of threaded stem, in other words, the utility model is after production is finished, packing ring just becomes as a whole with the utility model, the user is when using the utility model, need not to install packing ring additional on the screw rod in the utility model more in addition, thereby make the utility model save the operation that installs packing ring together in addition additional, and then improved efficiency of assembling of the present utility model greatly, make the utility model in assembly process, become more simple and convenience.

Description of drawings:

Fig. 1 is the structural representation of a kind of Cock screw of the utility model.

Fig. 2 is the decomposition texture schematic representation of Fig. 1.

Shown in the figure, 1, screw head, 2, flange plate, 3, packing ring, 4, threaded stem, 5, polished rod II, 6, cone, 7, polished rod I.

Specific embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

As depicted in figs. 1 and 2, in this specific embodiment, a kind of Cock screw of the utility model constitutes for holistic screw rod by screw head 1, cone 6 and with screw head 1; The end face that described screw head 1 is connected with screw rod is provided with flange plate 2; Described screw rod comprises polished rod I 7 and threaded stem 4 two-part; Described polished rod I 7 is between flange plate 2 and threaded stem 4; Between described threaded stem 4 and the cone 6 one section polished rod II5; Be with a packing ring 3 on the described polished rod I 7; The inner ring diameter of described packing ring 3 is slightly less than the big footpath of screw thread on the threaded stem 4; The inner ring diameter of described packing ring 3 is slightly larger than the diameter of described polished rod I 7; Described packing ring 3 can slide up and down on polished rod I 7, but packing ring 3 can not come off from described threaded stem 4.

Claims

1, a kind of Cock screw, it by screw head (1), cone (6) and with screw head (1) be that holistic screw rod constitutes; The end face that described screw head (1) is connected with screw rod is provided with flange plate (2), it is characterized in that: described screw rod comprises polished rod I (7) and threaded stem (4) two-part; Described polished rod I (7) is positioned between flange plate (2) and the threaded stem (4); Be one section polished rod II (5) between described threaded stem (4) and the cone (6); Be with a packing ring (3) on the described polished rod I (7); The inner ring diameter of described packing ring (3) is slightly less than the big footpath that threaded stem (4) is gone up screw thread.