CN2392019Y

CN2392019Y - Upset bolt

Info

Publication number: CN2392019Y
Application number: CN 99215671
Authority: CN
Inventors: 李日光
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-28
Filing date: 1999-07-28
Publication date: 2000-08-16
Anticipated expiration: 2009-07-28

Abstract

The utility model relates to an expansion bolt, which belongs to the technical field of construction material decoration. The structure of the expansion bolt is that an inner expansion head of the bolt is a cone-shaped body, a trapezoid groove of a circular ring is arranged on a cone-shaped surface, the inner end of an outer sleeve is a petal shape, and the outer end is provided with a baffle ring. The expansion bolt has the advantages that an outer pull fixing type of the expansion bolt is a squeezing fixing type, the structure is simple, and the fixing effect is good.

Description

EXPANSION ANCHOR BOLTS

The utility model belongs to building materials decoration technology field, relates to a kind of improvement of EXPANSION ANCHOR BOLTS.

At present, the EXPANSION ANCHOR BOLTS of in construction and decoration, using, its structure is that an inflatable garment is arranged outside bolt, a top head diameter of bolt is greater than the diameter of bolt, the other end is threaded and is with nut, be that EXPANSION ANCHOR BOLTS is inserted in the porthole together with overcoat in use, swivel nut is pulled out bolt, and make the major part of bolt enter overcoat, and cause overcoat to expand, overcoat contacts with body of wall, realize the purpose of bolt, this EXPANSION ANCHOR BOLTS, bigger if porthole is opened, fixed effect will be bad.

The purpose of this utility model provides a kind of to the internal-extruding type EXPANSION ANCHOR BOLTS.

The technical solution of the utility model is as follows:

The interior expansion-head of bolt is a conically shaped body, and the annulus trapezoidal groove is arranged on coned face, and overcoat the inner is petal, and there is baffle ring the outer end.

The utility model has the advantages that: drawing EXPANSION ANCHOR BOLTS fixed outward is that extruding is fixed, simple in structure, good fixing effect.

Fig. 1, be sectional drawing of the present utility model;

Fig. 2, be structural drawing of the present utility model;

Be described in detail embodiment below in conjunction with accompanying drawing:

Wherein: the 1st, nut, the 2nd, bolt, the 3rd, interior expansion-head, the 4th, overcoat, the 5th, baffle ring, the 6th, pad, the 7th, body of wall.

Interior expansion-head also can be the taper shape of threaded groove, and the extruding of expansion-head was ftractureed in the petal of overcoat the inner can be subjected to, but and in the ring groove of the trapezoidal garden of petal center-side stud bolt, the thickness of petal can be greater than overcoat thickness.Pad is advisable being stuck in the baffle ring.After EXPANSION ANCHOR BOLTS is inserted porthole, screw nut, force bolt in body of wall, to move, the petal of overcoat is squeezed and spalling, in the expansion-head, the outside then contacted with body of wall, reaches fixed effect in the petal center-side embedded.

Claims

1, a kind of EXPANSION ANCHOR BOLTS, be made of its feature nut (1): the interior expansion-head (3) that is bolt (2) has the annulus trapezoidal groove for outside the conically shaped body on coned face, overcoat (4) the inner is petal, and there is baffle ring (5) outer end.