CN2257870Y

CN2257870Y - Expansion bolt assembly

Info

Publication number: CN2257870Y
Application number: CN 95229107
Authority: CN
Inventors: 刘有志
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-20
Filing date: 1995-12-20
Publication date: 1997-07-16
Anticipated expiration: 2005-12-20

Abstract

The utility model relates to a novel expansion bolt assembly which is formed by that an inner nut 1, an expansion lining tube 2, a double-end expansion tube 3, a sleeve 4, a double-end expansion tube 5 and an elastic lining tube 6 are assembled on a bolt 7 in sequence. When used, the utility model is screwed down by a wrench to effectively enhance the expansion extent and the anchoring force, eliminate the gap and swing, and the utility model can be assembled or dissembled and has a beautiful appearance. With endurance of the dead load of the shear force or the pull force, the expansion bolt assembly can be used for fixedly connecting objects on base bodies such as buildings, etc. and has convenient use.

Description

The upset bolt assembly parts

A kind of upset bolt assembly parts belongs to the mechanical component technical field, relates to fastening piece, particularly relates to EXPANSION ANCHOR BOLTS.

In industries such as construction and installation, decorations, EXPANSION ANCHOR BOLTS is used extensively.The existing EXPANSION ANCHOR BOLTS of existing market mass selling, formed by bolt, expand tube and nut, can play the effect that is fastenedly connected, but because nut is outside the body of wall pre-drilled, bolt must be twisted outward during use, always have one section bolt exposed outside, neither attractive in appearance after the installation, influence is further constructed or is cut to pieces and hurt sb.'s feelings again.When fixation took out of service, bolt was difficult for taking off, and in the time of must taking off, can destroy wall body structure.Its swell increment only limits to the expand tube wall thickness, the anchor force deficiency.Gapped between screw rod and expand tube, screw rod rocks.

The purpose of this utility model provides a kind of upset bolt assembly parts that can overcome above-mentioned shortcoming.

Prior art is compared, and the utlity model has following advantage: 1, swell increment increases, and increases with the body of wall junction plane, and fastening quality improves.2, eliminate the gap, screw rod does not rock.3, exterior appearance, good decorative property.4, remove easily, do not hinder wall body structure.

Now contrasting accompanying drawing is described in detail the structure of upset bolt assembly parts.

The drawing explanation:

1 inner nut, 1.1 protruding key 2 expansion block pipes 3 both-end expand tubes

4 sleeve pipes, 5 both-end expand tubes, 6 elasticity cushion covers, 7 bolts

8 outer nuts, 9 hook-shaped screw rods

Fig. 1 is a schematic representation of the present utility model.

Fig. 2 is another schematic representation of the present utility model.

By Fig. 1, inner nut 1, expansion block pipe 2, both-end expand tube 3, sleeve pipe 4, two End expand tube 5, elasticity cushion cover 6 is contained on the bolt 7 successively. Inner nut 1 has the center screw thread The hole, bigger end is cylindrical, the other end is conical, the sliding protruding key 1.1 of setting up defences on the conical surface, This protruding key can omit. Expansion block pipe 2 is for the pipe that increases swell increment, is encased inside two The end expand tube 3 within, its end has axial slit, can expand, the mouth of pipe to around turn back 90 °, an axial slit that connects full pipe is arranged. Both-end expand tube 3 is that two ends are all expandable Pipe, two ends are all established axial slit. Sleeve pipe 4 tube walls are thicker, and two ends all are tapers, the middle part For cylindrical. Both-end expand tube 5 structures are identical with both-end expand tube 3. Elasticity cushion cover 5 is to have The shorter pipe of axial straight joint, an end has chamfering, inserts within the both-end expand tube 5, in it The footpath makes it contact when axially straight joint is closed and does not press screw rod. Bolt 7 one ends are screw rods, Its screw thread cooperates with inner nut 1, and the other end is affixed head.

During use bolt 7 is loaded onto packing ring, pass the hole on the fixation, wear successively again Cross elasticity cushion cover 6, both-end expand tube 5, sleeve pipe 4, both-end expand tube 3, expansion block pipe 2, The inner nut 1 of screwing on, the whole insertion in the body of wall prebored hole screws up with a wrench. Need to remove The time, oppositely screw, bolt 7 is withdrawed from getting final product.

Sleeve pipe 4 wherein, both-end expand tube 5 and elasticity cushion cover 6 can omit, and will be two End expand tube 3 prolongs, and omits the axial slit by the bolt head end. Expansion block pipe 2 can Extend to the length that equals or slightly be longer than both-end expand tube 3, to turning back and axial leading to all around Seam all can omit.

By Fig. 2, inner nut 1, expansion block pipe 2, both-end expand tube 3, elasticity cushion cover 6, outer nut 8 are contained on the hook-shaped screw rod 9 successively.Outer nut 8 is formed by the affixed head transformation of the way of bolt 7, and hook-shaped screw rod 9 is formed by the screw rod prolongation and the bending of bolt 7.The hook-shaped screw rod 9 that outer nut 8 will be housed during use adds upper gasket, passes the hole on the fixation, passes elasticity cushion cover 6 more successively, both-end expand tube 3, and expansion block pipe 2, the inner nut 1 of screwing on, the whole insertion in the pre-drilled, outer nut 8 screws up with a wrench.During dismounting, unscrew outer nut 8, the hook-shaped screw rod 9 that reverses can withdraw from.

Hook-shaped screw rod 9 also can be made ring-type, and elasticity cushion cover 6 can omit, and expansion block pipe 2 can extend to the length that equals or slightly be longer than both-end expand tube 3, to around turn back and axially straight joint all can omit.

The utility model can substitute existing EXPANSION ANCHOR BOLTS, goes up fixedly connected object at different matrix (building masonry wall, ceiling board, ground etc.), bears shearing force or pullout forces dead load.Easy to use, be easy to promote.

Claims

1, a kind of upset bolt assembly parts is characterized in that inner nut (1), expansion block pipe (2), both-end expand tube (3), sleeve pipe (4), both-end expand tube (5), elasticity cushion cover (6) are contained on the bolt (7) successively;

Inner nut (1) has screwed hole of centre, and bigger end is cylindrical, and the other end is conical, and conical surface is established protruding key (can omit);

Expansion block pipe (2) is the expandable pipe of an end, and an axial straight joint that connects full pipe is arranged, inflating end establish axial slit and the mouth of pipe to around turn back 90 °, be encased inside within the both-end expand tube (3);

Both-end expand tube (3) is all expandable pipe of both-end, and axial slit is all established at two ends;

Sleeve pipe (4) tube wall is thicker, and two ends all are conical, and the middle part is cylindrical;

Both-end expand tube (5) is all expandable pipe of both-end, and axial slit is all established at two ends;

Elasticity cushion cover (6) is the pipe that axial straight joint is arranged, and a chamfer inserts within the both-end expand tube (5), and its internal diameter makes it contact when straight joint is closed and do not press screw rod;

Bolt (7) one ends are screw rods, and its screw thread cooperates with inner nut (1), and the other end is affixed head.

2, assembly parts according to claim 1 is characterized in that sleeve pipe (4), and both-end expand tube (5) and elasticity cushion cover (6) can omit, and both-end expand tube (3) are prolonged and omits the axial slit of an end.

3, assembly parts according to claim 2 is characterized in that expansion block pipe (2) can extend to the length that equals or slightly be longer than both-end expand tube (3), to around turn back and axially straight joint all can omit.

4, assembly parts according to claim 1 is characterized in that omitting sleeve pipe (4) and both-end expand tube (5), changes the affixed head of bolt (7) into outer nut (8), and screw rod prolongs and bending is hook-shaped (9) or ring-type.

5, assembly parts according to claim 3 is characterized in that changing the affixed head of bolt (7) into outer nut (8), and screw rod prolongs and bending is hook-shaped (9) or ring-type.