CN2148850Y

CN2148850Y - Multi-purpose expansion wall nail

Info

Publication number: CN2148850Y
Application number: CN 92234356
Authority: CN
Inventors: 成永生
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-27
Filing date: 1992-09-27
Publication date: 1993-12-08
Anticipated expiration: 2002-09-27

Abstract

The utility model which relates to an expansion screw discloses a multi-purpose expansion wall nail, comprising an expansion rod. A blind hole with the internal thread is arranged on the center of the expansion rod, three uniform inverted cone-shaped holes are arranged on the front end of the blind hole, and the three uniform inverted cone-shaped holes are perpendicular to the axial line; besides, a steel ball is arranged in the inverted cone-shaped holes, and a tip cone abutting against the centers of the three steel balls are in the thread fit with the expansion rod. An anti-loosing sleeve pipe is in the thread fit with the back end of the expansion rod, and bolts are in the thread fit in the sleeve pipe. Compared with the existing expansion screw, the wall nail which is not easily loosened has the advantages that the stress condition is good, and the installation of the wall nail is laboursaving and timesaving; the expansion of the wall nail is tight, and the wall nail which is easy to dismount a be used repeatedly. Objects can be hung on a rope arranged on the bolts, and the utility model is an ideal wall nail used for the daily living of the people.

Description

Multi-purpose expansion wall nail

The utility model belongs to a kind of swell fixture.

At present, the swell fixture that occurs on the market all is made up of WOOD SCREWS or expansion tube, this swell fixture expansion tube be iron or plastics all be disposable.Load onto and just be difficult for unloading, unload and to use again.This in addition swell fixture loading angle is bad, effort, easily loosening when last, and only be applicable to fixingly, be unsuitable for bolt and hang.

The purpose of this utility model provides a kind of multipurpose expansion wall nail, and is stressed bad to solve existing swell fixture, and effort when last is with the passing of time easily loosening, can only disposablely use, and bolt is hung shortcomings such as inconvenience.

The purpose of this utility model is achieved in that this wall nail front end has expansion rod, the bar heart that blind screw hole is arranged, the hole front end has the back taper hole of three vertical axis uniform, back taper has steel ball in the hole, addendum cone just withstands on three ball center, with the expansion rod screw-thread fit, can adjust the steel ball position, expansion rod rear end screw-thread fit has locking sleeve pipe, its internal diameter can be pushed down addendum cone less than the addendum cone external diameter, and screw-internal thread fit has screw.

This wall nail is compared with having swell fixture now, has the following advantages: (1) with the direct top of addendum cone steel ball, steel ball is pressed into hole wall, and stress condition is good, and is laborsaving when last, save time; (2) the steel ball extrusion capacity big, expand tight; (3) quick detachable, reusable; (4) be furnished with screw in the locking sleeve pipe, can on screw, fasten rope and draw thing, enlarged using scope.

Be described further below in conjunction with accompanying drawing:

Fig. 1 multipurpose expansion wall nail (cut-away view)

Fig. 2 loose-proof sleeve parts drawing

Fig. 3 screw element figure

Among Fig. 1-3: expansion rod (1) is conical for cylindrical or front end, in tapped blind hole is arranged, there are three back taper holes uniform on the nose end cylinder, the aperture is less than or equal to steel ball size, in the expansion rod rear end, screw-internal thread fit has addendum cone (3), there is bar awl groove at its rear portion, the front portion is the acute angle taper shape, in expansion rod rear end screw-thread fit locking sleeve pipe (4) is arranged, its external diameter is identical with the expansion rod external diameter, and screw (4-1) is arranged in it, (4-2), screw (4-2) diameter is less than the external diameter of addendum cone (3), the loose-proof sleeve spout part has block or does not have block, and its end face is provided with bar awl groove (4-3), in locking sleeve pipe (4) screw-internal thread fit screw (5) is arranged, there is aperture (5-2) at its center, the screw rod root has polished rod, and vertical filament hole (5-3) is arranged on the bar, and screw front end has outside thread (5-1), the nut outer surface has vertical or netted check (5-4), and its end face has cross-bar awl groove (5-5).Put steel ball (2) during assembling earlier into, be screwed into addendum cone (3) then, steel ball (2) is clamp-oned in the back taper hole, twist locking sleeve pipe again and (4), screw (5) can singly be joined, also can be screwed in the locking sleeve pipe (4) to sell together.Boring on the wall earlier during use, then the wall nail is put into, twist addendum cone (3) with the bar awl, after treating swelling, tighten locking sleeve pipe (4) with the bar awl again,, rope can be passed setting fastening by screw center hole (5-2) if need stay cord, with the screw screwin, also can penetrate and fasten again by vertical filament hole (5-3).

Claims

1, a kind of multipurpose expansion wall nail, it is characterized in that in the expansion rod (1) tapped blind hole being arranged, the hole front end has the back taper hole of three vertical axis uniform, and steel ball (2) is arranged in the back taper hole, and addendum cone (3) just withstands on three steel ball centers, with the expansion rod screw-thread fit, can adjust the steel ball position, expansion rod (1) rear end screw-thread fit has locking sleeve pipe (4), and its internal diameter is less than addendum cone (3) external diameter, can push down addendum cone (3), locking sleeve pipe (4) screw-internal thread fit has screw (5).

2, wall nail according to claim 1, it is characterized in that its external diameter of locking sleeve pipe (4) is identical with the expansion rod external diameter, in screw (4-1), (4-2) are arranged, screw (4-2) diameter is less than addendum cone (3) external diameter, oral area is provided with block or does not have block, and its end face has bar awl groove (4-3).

3, wall nail according to claim 1, it is characterized in that screw (5) front end has outside thread (5-1), there is aperture (5-2) at its center, the screw rod root has vertical filament hole (5-3) is arranged above the polished rod section, at the nut outer surface vertical or netted check (5-4) is arranged, end face has cross-bar awl groove (5-5).