CN2215619Y

CN2215619Y - Strong safety expansion nail

Info

Publication number: CN2215619Y
Application number: CN 95201858
Authority: CN
Inventors: 苏德奎
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-27
Filing date: 1995-01-27
Publication date: 1995-12-20
Anticipated expiration: 2005-01-27

Abstract

The utility model relates to a screw thread device used for fixing an object or equipment and a device. The utility model is composed of a sleeve tube and a screw thread fastener with a cone. But a screw nut of the utility model is an external cone-shaped component, a general screw bolt is matched with a screw nut, the sleeve tube is formed by the joining arc slips of a corresponding circular tube and a groove at the external surface of the arc slips is provided with a structure of an elastic wire ring; the utility model is provided with a taper sleeve component; the screw bolt penetrates the outer taper sleeve and a sleeve pipe in turn to connect with a screw nut. The expansion nail has no exposed screw thread part, the structure is more reasonable, more neat and more beautiful; the use is convenient and safe and accidents can not occur; the expansive force is strong; the utility model can be repeatedly used.

Description

Strong safety expansion nail

The utility model relates to a kind of screw-threaded device of mounting article or unit and so on.

Present most popular EXPANSION ANCHOR BOLTS is made of the threaded fastener etc. of the thin wall casing that opening is arranged, band cone.It has threaded fastener to comprise: afterbody is the stay bolt of cone structure, standard hex nut and packing ring.Sleeve pipe is contained on the stay bolt with opening end and cone contact sleeve, and attachment means such as nut are at the screw thread place of bolt.During use, the threaded end of EXPANSION ANCHOR BOLTS outwardly, cone segments and sleeve portion are all imbedded in the body of wall, turn outside nut, outwards moving long bolt, the bolt band cone distending thin wall casing on it is realized fastening fixing.The deficiencies in the prior art part mainly is: bolt has suitable one section screw thread to be emerging in the outside of object, and the one, not attractive in appearance; The 2nd, poor stability often causes the hanging breaking clothing, hangs the injury of skin and superficial muscles and so on contingency; The 3rd, expansive force is less, only depends on the cone of an end to expand, and the surface of contact of expand tube and body of wall is little, is restricted in the use.In addition, this EXPANSION ANCHOR BOLTS is disposable use, when changing the mounting point, is difficult to its taking-up is used again.

The purpose of this utility model is to avoid deficiency of the prior art, and provides a kind of nothing to expose screw thread, safe in utilization and expandable nail product that active force is strong.

Can take following technological scheme to realize purpose.Threaded fastener by opening thin sleeve pipe, band cone constitutes.But its nut is the external conical shape member, and what match with nut is general bolt, and sleeve pipe is that three arc slips by corresponding pipe are combined into, the groove of arc slip appearance is equipped with the structure of elastic steel traveler, it also has the external conical sleeve member, and bolt penetrates external conical sleeve, sleeve pipe successively, is connected with nut.Constitute bolt head outside, the two ends cone is squeezed the expandable nail product that expands simultaneously.

In conjunction with the accompanying drawings, mode of execution is described in further detail the content of the technical program.

Accompanying drawing is a kind of structural representation of strong force safety expandable nail.

The nut of strong force safety expandable nail (1) should be the external conical shape member, and promptly central hole is a worm structure, and outer surface is a cone, and the length of member, size, cone angle etc. all can be selected as one sees fit.The opening thin sleeve pipe is by independently the bar shaped arc plate---arc slip (2) is formed jointly with the elastic steel traveler (3) that is contained in its appearance groove, i.e. combined casing separately; The quantity of arc slip (2), elastic steel traveler (3) and the width of arc slip, length etc. also can be selected as one sees fit.The strong force safety expandable nail also is provided with external conical sleeve (5) member, and it is that central authorities are through hole, and appearance is the member of cone, and through hole is used to pass bolt.What match with nut is general bolt (4), and the entire length of bolt can need selectedly according to using, and bolt head can be inside and outside hexagon or a word, cross flute profile and other shape and structure etc.Bolt penetrates bullet, plain washer, external conical sleeve, sleeve pipe successively, is connected with nut.

During use, cone nut end, sleeve pipe and external conical sleeve are all imbedded in the body of wall, general bolt head matches with nut with screw thread outside, turn outside bolt head, cone nut and external conical sleeve relatively move along the bolt axis, simultaneously with the cone of its appearance distending combined casing gradually, sleeve pipe is contacted from two ends with body of wall along whole surface, realize fastening fixing.

Rotate for fear of cone nut and external conical sleeve, and better guidance quality and dilating property are arranged between sleeve pipe, the feather key (6) that matches with the sleeve pipe axial slits also can be set on the male cone (strobilus masculinus) of cone nut (1), external conical sleeve (5).The quantity of feather key can be consistent with the slit number of sleeve pipe, also can be inconsistent.

In order to strengthen surface friction drag, can be made into the roughened surface structure of line tooth in the appearance of arc slip (2).

The relative prior art of the technical program has following advantage:

1, nothing exposes threaded portion, makes its structure more reasonable, more neat appearance;

2, esy to use, safe and reliable, other contingency can not appear;

3, expansive force is powerful, and along the contact of whole sleeve pipe cylndrical surface, formation resistance, Applicable scope is wide, and it is more firmly firm to use;

4, can be repeatedly used, when needs, oppositely turn bolt, unclamp 3-4 and buckle, click bolt head slightly, under the effect of elastic steel traveler restoring force, nut, sleeve pipe, external conical sleeve are thrown off mutually, whole expandable nail restores to the original state, and can conveniently take out, in order to using again.

Claims

1, a kind of strong force safety expandable nail, by split coupling, the threaded fastener of band cone constitutes, it is characterized in that: its nut (1) is the external conical shape member, what match with nut is general bolt (4), sleeve pipe is that the arc slip (2) by corresponding pipe is combined into, and the groove of arc slip appearance is equipped with the structure of elastic steel traveler (3); It also has external conical sleeve (5), and bolt penetrates external conical sleeve, sleeve pipe successively, is connected with nut.

2, strong force safety expandable nail as claimed in claim 1 is characterized in that: the male cone (strobilus masculinus) of nut (1), external conical sleeve (5) is provided with the feather key (6) that matches with the sleeve pipe axial slits.

3, as claim 1,2 described strong force safety expandable nails, it is characterized in that: the appearance of arc slip (2) is the roughened surface structure that the line tooth is arranged.