CN201277229Y

CN201277229Y - Novel expansion bolt

Info

Publication number: CN201277229Y
Application number: CNU200820035869XU
Authority: CN
Inventors: 张慕国
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-20
Filing date: 2008-05-20
Publication date: 2009-07-22
Anticipated expiration: 2018-05-20

Abstract

The utility model relates to a novel expansion screw, which comprises a T-shaped rod, a ferrule, an expansion pipe and a cone screw cap, wherein one end of the T-shaped rod, which is exposed on a wall face, is provided with an inner threaded hole, and the T-shaped rod is screwed with the cone screw cap to form an integral body after passing through the ferrule and the expansion pipe, and is plugged into a wall hole, then, a screw driver is used to rotate the groove of the T-shaped rod, thereby fixing the T-shaped rod on the wall surface, the wall surface is neat and attractive, and objects can be fixed only by screwing a screw into the inner threaded hole. The novel expansion screw has simple structure, convenient use and low cost, which is suitable for home decoration, and has wide market prospects.

Description

A kind of novel setscrew

Affiliated technical field

A kind of novel setscrew that the utility model provides belongs to field of mechanical technique, relates to a kind of connection fastening piece.

Background technique

Present commercially available setscrew, because when fastening object, needing to enter threaded stem that an end in the body of wall has tapering is connected to rotate by the nut with the body of wall outside and pulls out, the built-in expansion tube of the outside mobile time expansion of threaded stem, thereby playing the effect of fastening object. this setscrew causes damage to metope easily, and threaded stem one end that has tapering protrudes metope, and is not attractive in appearance, in case this setscrew is the time spent not, metope just stays the eye scar.

Summary of the invention

The utility model is exactly in order to address the above problem, and provides a kind of cheap, easy to use, does not destroy metope novel setscrew attractive in appearance again.

Technical solution of the present utility model: a kind of novel setscrew, it is characterized in that it is by T shape bar. lasso, expansion tube, tapered cup nut is formed, T shape bar is exposed to metope one end and is equipped with interior threaded hole, when novel setscrew is filled in the wall intraocular, T shape bar is rotatably connected with tapered cup nut by expansion tube, T shape bar has staggered screw thread with the tapered cup nut portion of being rotatably connected, when the rotation of T shape bar, tapered cup nut will move, just original position rotation of T shape bar rotation, can not protrude metope .T shape bar and rotate, tapered cup nut is moved in expansion tube, the one side compressing expansion tube expansion that the tapered cup nut diameter is big to a direction, thereby make setscrew be fixed on the wall intraocular. and T shape bar is exposed to metope one end the round lasso of one area greater than the wall eye arranged, covered the scar of metope eye. be equipped with interior threaded hole because of T shape bar is exposed to metope one end, fixedly the time, only need and will can play the effect of mounting article in the screw precession interior threaded hole if any object.

The utility model beneficial effect is, because the utility model setscrew is to be installed in the body of wall, the used tapped hole of fastening external object also is in the cavity of setscrew, do not influence the neat and artistic of metope, therefore can be in the room device in advance, not during mounting article, clogging threaded bores with the round plastic sheet identical with wall color. the utility model is simple in structure, easy to use, cheap. be suitable for home decoration and use, have vast market prospect.

Description of drawings

Fig. 1-the 1st, front view of the present utility model, Fig. 1-2 are side views. Fig. 2 is a sectional drawing.

Such as Fig. 2, in the utility model, T shape bar 1 is the cylinder that three kinds of diameters form, diameter 8 one ends have inner circle screwed hole 5, diameter 8 is greater than lasso 2 internal diameters, less than lasso 2 external diameters, diameter 9 equates less than lasso 2 internal diameters with expansion tube 3 external diameters, diameter 10 equates with tapered cup nut 4 internal diameters and the screw thread that mutually can interlock is arranged, tapered cup nut 4 nearly expansion tube 3 one end external diameters are less than expansion tube 3 internal diameters, protrude from expansion tube 3 one end external diameters and equate that with expansion tube 3 external diameters .T shape bar 1 penetrates lasso 2 and penetrates expansion tube 3 and be rotatably connected with tapered cup nut 4.

Embodiment

When the utility model uses, T shape bar 1, lasso 2, expansion tube 3, tapered cup nut 4 is according to linking as Fig. 2, fill in the wall intraocular, see Fig. 1-1, with the groove 6 of bottle opener rotation T shape bar, along with the rotation of T shape bar, because of T shape shank diameter 9 equates with expansion tube 3 external diameters, the rotation of T shape bar original position, tapered cup nut 4 moves in expansion tube 3, makes 7 expansions of expansion tube breach, novel setscrew is fixed in body of wall. because lasso 2 external diameters are greater than the wall eye, covered the scar that occurs because of mechanical drilling, made wall surface levelling, attractive in appearance. as long as use screw precession interior threaded hole 5 Fig. 1-2, get final product mounting article. for this reason, the utility model is simple and practical attractive in appearance.

Claims

1, a kind of novel setscrew is characterized in that it by T shape bar (1). lasso (2), expansion tube (3), tapered cup nut (4) are formed, and T shape bar (1) penetrates lasso (2) and penetrates expansion tube (3) and be rotatably connected with tapered cup nut (4).

2, by the described a kind of novel setscrew of claim 1, it is characterized in that T shape shank diameter (8) one side is equipped with interior threaded hole (5), and fluted (6).

3, by the described a kind of novel setscrew of claim 1, it is characterized in that lasso (2) internal diameter greater than T shape shank diameter (9), and less than diameter (8).

4, by the described a kind of novel setscrew of claim 1, it is characterized in that expansion tube (3) external diameter equates with T shape shank diameter (9), nearly tapered cup nut (4) one ends of expansion tube (3) have breach (7).

5, by the described a kind of novel setscrew of claim 1, it is characterized in that tapered cup nut (4) internal diameter and T shape shank diameter (10) equate and have that staggered screw thread is rotatable to be connected, tapered cup nut (4) one end external diameters are less than expansion tube (3) internal diameter, and the other end external diameter then equates with expansion tube (3) external diameter.