CN2177119Y

CN2177119Y - Directly nailed expansion bolt

Info

Publication number: CN2177119Y
Application number: CN 93214709
Authority: CN
Inventors: 赫建军
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-31
Filing date: 1993-05-31
Publication date: 1994-09-14
Anticipated expiration: 2003-05-31

Abstract

The utility model discloses an expansion screw bolt, being composed of a screw bolt, an expansion tube, a washer and a screw nut. A head part of the screw bolt is a prong, a rod part is thin and is sheathed with an expansion tube, the material of the main body is a cement nail material, the screw bolt can be directly hammered into a wall, and the trouble of drilling a hole is omitted. Compared with the existing expansion bolt, the utility model has the advantages of low increased cost, convenient use and firm fixation. The utility model can be used to partially (referring to the limitation of diameter) replace the existing expansion screw bolts and cement nails and can also be used for a nail gun.

Description

Directly nailed expansion bolt

The utility model belongs to mechanical component, relates to the EXPANSION ANCHOR BOLTS of fixed object on building.

The EXPANSION ANCHOR BOLTS head that goes out in the market is flat, only could use on the basis that has openning hole, and therefore uses to acquire a certain degree of difficulty, and is difficult for realizing for general family.Through looking into four patents of (2033457U), (2056711U), (2113373U), (2121560U) and the utility model of newly going out nail formula structure is arranged equally, but it all is to hammer into from expansion tube with the nail that expands to make the bolt swelling, and expansion tube still will be put into and is drilled to the hole.

The purpose of this utility model provides a kind of novel EXPANSION ANCHOR BOLTS, need not hole, and hammer into or inject wall with hammer or nail gun.

For solving above-mentioned task, the solution that the utility model adopts is: make that bolt is promptly made with middle-carbon steel and through heat treatment with the cement nail material, the bolt end is made pointed, bar portion is thin than the end, make the expand tube external diameter that puts be not more than the end, form the cone of receiving backward between bar portion and the end.

Advantage of the present utility model is: 1, need not hole, make the use of EXPANSION ANCHOR BOLTS simple, convenient, the application area of having expanded EXPANSION ANCHOR BOLTS, also can use under the situation of non-transformer, no electric drill; 2, combine with nail gun, it is fixing firm inadequately that alternative nailing use can replenish nailing, non-removable deficiency; Substitute boring EXPANSION ANCHOR BOLTS is installed, can greatly improve installation efficiency.

Accompanying drawing is the utility model structural representation, and number in the figure is described as follows:

The 1-bolt, 101-tip, 102-end, the cone of receiving behind the 103-, 104-bar portion, 105-screw thread, 2-expand tube, 201-chamfering, 3-packing ring, 4-nut.

1 is the bolt of cement nail material, is shaped as the nail formula, and cone 103, the bar portion of being received by tip 101, end 102, back form for 104 4 sections; End 102 is thick than bar portion 104, makes expand tube 2 external diameters that are enclosed within the bar portion 104 be not more than end 102; Expand tube 2 front ends crack to close chamfering 201, and chamfering for the benefit of expand tube enters wall with bolt; Form the cone of receiving backward 103 between end 102 and the bar portion 104, can make expand tube 2 front ends be placed on the cone 103 during last jack panel 4 and bulge.During use, packing ring 3, nut 4 are screwed on, knocked bolt 1 rear portion, cause expand tube 2 and enter wall fully, last jack panel 4, expand tube 2 will bulge, and EXPANSION ANCHOR BOLTS is fixed on the wall.

Claims

1, a kind of EXPANSION ANCHOR BOLTS that directly hammers into, by bolt (1), expand tube (2), packing ring (3), nut (4) is formed, and it is characterized in that: bolt (1) is made by the cement nail material, and a tip (101) is arranged, end (102) diameter is greater than bar portion (104) diameter, and end (102) are divided into the cone of receiving backward (103) with bar portion (104) transition part; Expand tube (2) is placed in bar portion (104), and there is screw thread (105) bar portion (104) rear end, on packing ring (3) and nut (4) are arranged.

2, EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that, described expand tube (2) external diameter is equal to or slightly less than bolt (1) end (102) diameter, and expand tube (2) front end cracks and chamfering (201) is arranged.

3, EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that described cement nail material is a middle-carbon steel and through heat treatment.