CN2215618Y

CN2215618Y - Safety expansion nail

Info

Publication number: CN2215618Y
Application number: CN 95201799
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 part used for fixing articles or equipment and devices. The utility model is composed of an open sleeve tube with a thin wall and a screw thread fastener with a cone body. But a screw nut of the utility model is an outer cone-shaped component, a general screw bolt is matched with the screw nut, and an open end of the sleeve tube is in contact with the conical screw nut and is sheathed on the screw bolt. The expansion nail has no exposed screw thread part, the structure is more reasonable, neat and beautiful and the use is convenient and safe and the other accidents can not happen.

Description

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.Its threaded fastener comprises: 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 more important thing is poor stability, often cause the hanging breaking clothing, hang the injury of skin and superficial muscles and so on contingency.

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

Can take following technological scheme to realize purpose, also the 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 contained on the bolt with opening end and cone nut contact sleeve.Constitute bolt head expandable nail product outside.

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

Fig. 1 is a kind of structural representation of the safe expandable nail of single awl;

Fig. 2 is a kind of structural representation of bipyramid safety expandable nail.

The opening thin sleeve pipe (2) of safe expandable nail reaches and puts down, the bullet packing ring can not have difference with prior art.But its nut (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; What match with nut is general bolt (3), and the entire length of bolt needs 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.The opening of sleeve pipe (2) is sleeved on the bolt towards cone nut.

During use, cone nut end and sleeve portion are all imbedded in the body of wall, and general bolt inserts sleeve pipe and matches with cone nut, turn outside bolt head, cone nut outwards moves along bolt, with the cone of its appearance distending thin wall casing gradually, realizes fastening fixing simultaneously.

In order to strengthen expansive force, make inlet part more firmly firm, safe expandable nail also can be provided with external conical sleeve (5), and thin wall casing (2) is made the member of the equal opening in two ends, and external conical sleeve is sleeved between sleeve pipe and the bolt head and locates.External conical sleeve (5) is that central authorities are through hole, and appearance is the member of cone.When turning bolt, cone nut and external conical sleeve push distending thin wall casing (2) simultaneously.

Rotate for fear of cone nut and external conical sleeve, and have better guidance quality and dilating property between sleeve pipe, the feather key (4) that matches with the opening of thin wall casing 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 quantity of sleeve pipe upper shed, also can be inconsistent.

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, increase tapered sleeve, strengthen tension force, more firmly firm.

Claims

1, a kind of safe expandable nail, by the opening thin sleeve pipe, 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 (3), and sleeve pipe (2) contacts with cone nut with opening end, is sleeved on the bolt.

2, safe expandable nail as claimed in claim 1 is characterized in that: it also has external conical sleeve (5), and thin wall casing (2) is the member of the equal opening in two ends, and external conical sleeve (5) is sleeved between sleeve pipe and the bolt head to be located.

3, as claim 1,2 described safe expandable nails, it is characterized in that: all be provided with the feather key (4) that matches with the opening of thin wall casing (2) on the conical surface of nut (1), external conical sleeve (5).