CN2328823Y

CN2328823Y - Whole body expanding bolt with spur

Info

Publication number: CN2328823Y
Application number: CN 97223099
Authority: CN
Inventors: 辛国瑞
Original assignee: Individual
Current assignee: Xin Guorui
Priority date: 1997-06-02
Filing date: 1997-06-02
Publication date: 1999-07-14
Anticipated expiration: 2007-06-02

Abstract

The utility model relates to a whole body expanding bolt with spurs, which comprises a cylinder-shaped housing which is made by two outer shells (1) which are ferruled together by a spring (4) with semicircle barrel body structure. A stopper (5) with screw thread and a stopper (6) without the screw thread are respectively embedded into the both ends of the cylinder-shaped housing. A lead screw (2) which is sheathed with a top ring (7) is connected with the stopper (5) with the screw thread through the stopper (6) without the screw thread, which forms the whole body expanding bolt with spurs.

Description

Barbed entire body EXPANSION ANCHOR BOLTS

The utility model relates to a kind of improved EXPANSION ANCHOR BOLTS, belongs to building materials technology field, and especially suitable for producing is used for fixing the EXPANSION ANCHOR BOLTS of object.

EXPANSION ANCHOR BOLTS is widely used in building industry, adnornment industry and the daily life.Existing EXPANSION ANCHOR BOLTS has a screw mandrel, and an end of thin bar has screw thread, and its other end is the top of a band tapering.What be used with it is the shell of a hollow, and an end of hollow shell has the slit, and the other end of hollow casing is a sealed cylindrical, and screw mandrel penetrates in the hollow shell, makes the top of its band tapering place the apertured end of hollow shell.During use with the thread bush upper cap nut of screw mandrel one end, rotating nut is pulled outwardly screw mandrel, the jacking of screw mandrel one end band tapering is gone in the apertured end of hollow shell in the process of drawing, tapering by screw mandrel one end top expands the support of the hollow shell in crack with seam, thereby EXPANSION ANCHOR BOLTS is swollen, hole stretching with being beaten can be used for fixing other object.

The defective of this existing EXPANSION ANCHOR BOLTS is:

1, screw mandrel is pulled outwardly, draws longer and longer, neither attractive in appearance, pull easily again and hang other article.

2, wire drawing bar in any case bolt is swollen and the stretching that is perforated, but stretching still only is the sub-fraction of screw mandrel one end band cone, major part is empty, and this makes that the strength of EXPANSION ANCHOR BOLTS is little, and easy again upper and lower vacillating now to the left, now to the right, of a specified duration causing is loosening, loses the effect of bolt.

3, the hollow shell can only support bloatedly, can not restore, once repacking is by solid object or when dismantling by solid object, hollow shell and screw mandrel are difficult for taking out, and can not reclaim usefulness again, bring inconvenience to construction, also cause waste simultaneously.

The purpose of this utility model provides a kind of barbed entire body EXPANSION ANCHOR BOLTS, when utilizing this barbed entire body EXPANSION ANCHOR BOLTS fixed object, the bolt entire body is expanded, and expansive force is big, convenient disassembly, and also the screw mandrel exposed portions serve is few, and beautiful.

For realizing that the purpose of this utility model has adopted following technological scheme:

The shell of EXPANSION ANCHOR BOLTS is made the branch body case that has tapering in the shell, and there is an annular slot outside of shell, have in the groove spring will branch body case hoop together; There are some spinules on the surface of shell.In addition system band tapering has screw thread and threadless two kinds of stoppers, and the tapering in the tapering of stopper and the shell coincide, respectively with shell in the taper fit use; Screw mandrel passes threadless stopper in the shell, closes with the screw thread line with threaded stopper; On screw mandrel, also be with collar.With spring band together and have in the shell tapering, shell watchband spinosity shell, with shell in the stopper wearing mutually, connect by screw mandrel, form barbed entire body EXPANSION ANCHOR BOLTS jointly.

Further describe technical characteristics of the present utility model below in conjunction with accompanying drawing:

Fig. 1, an embodiment's of the utility model broken section structural representation;

Fig. 2, the threaded plug structure schematic representation of embodiment;

The plan view of Fig. 3, embodiment's screw thread stopper;

Fig. 4, embodiment's screw mandrel top have the structural representation of hook;

Fig. 5, embodiment's screw mandrel top have the structural representation of annular distance.

In the structural representation of Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, among Fig. 11 is two semicircle tubular structures that shell, shell 1 are divided into symmetry, edges at two ends at two shells has gradient, make when two semicircle cylindrical case hoops lump together, the two ends beveled edge of its two shell constitutes a V font angle, be convenient to make the projection of stopper to clamp in the angle of V font, when guaranteeing to turn screw mandrel 2, stopper moves along V font angle.Have tapering in the shell of shell 1, the tapering of its tapering and stopper matches, so that be used; There are some spinules 3 outside of shell 1, and the effect of spinule 3 is when EXPANSION ANCHOR BOLTS expands, and thrusts in the hole wall that is touched, to increase EXPANSION ANCHOR BOLTS and to be touched the combination force in hole.One annular slot H is arranged above the shell 1, spring 4 is housed in annular slot H.Spring 4 binds round the shell 1 of split together, becomes the shell of a cylinder.Stopper is divided into threaded stopper 5 and threadless stopper 6, and the diameter of bore of threadless stopper 8 is slightly larger than the diameter of threaded stopper 5 and screw mandrel 2, does not rub with screw mandrel 2 so that screw mandrel 2 conveniently penetrates.Threaded stopper 5 is identical with the shape of threadless stopper 6, and they are polymorphic structure.Fig. 2 is the structural representation of threaded stopper 5, and Fig. 3 looks schematic representation for the internal organs of Fig. 2.Shown in Figure 4 is the screw mandrel 2 that the top has hook, and shown in Figure 5 is the screw mandrel 2 that the top has annular distance.When the barbed entire body EXPANSION ANCHOR BOLTS of the utility model is used Fig. 4 or screw mandrel shown in Figure 5, can be connected with other object easily, as fasten rope, extension thing etc.Also be with collar 7 between the stubborn silk position N of screw mandrel 2 one ends and threadless stopper 6, the effect of collar 7 is to turn when making the bolt expansion at screw mandrel 2, makes it withstand threadless stopper 6, and threadless stopper 6 is headed in the cylindrical case; And threaded stopper 5 leans on turning of screw mandrel 2, and it is drawn in the cylindrical case.Threaded stopper 5 and threadless stopper 6 enters in the cylindrical case jointly and support power jointly under, the cylindrical case entire body is expanded; If will make bolt recover original no swelling state, screw mandrel 2 is turned to negative side, threaded stopper 5 extrapolated getting final product, at this moment, cylindrical case returns to original no swelling state under the effect of spring 4, can reclaim like this, reuses.

Consult accompanying drawing 1, spring 4 in the annular slot H shell 1 hoop of two barbed semicircle tubular structures together, become the tubular structure shell, embed threaded stopper 5 and threadless stopper 6 respectively at the two ends of tubular structure shell, the screw mandrel 2 that is with collar 7 passes from threadless stopper 6, close by the screw thread line with threaded stopper 5, make barbed entire body EXPANSION ANCHOR BOLTS.

The utility model is compared with existing expansion bolt and is had the following advantages:

1, entire body expands, and is big with the friction that is touched the hole, and can not wave, and both can bear Heavy duty can make again the article that are fixed stable, unlikely damage.

2, can reclaim, recycle.

3, screw mandrel remains that certain-length exposes, good looking appearance.

Claims

1, a kind of barbed entire body EXPANSION ANCHOR BOLTS is characterized in that: described barbed entire body EXPANSION ANCHOR BOLTS is to be bound round together by the shell (1) of spring (4) with two semicircle tubular structures, makes cylindrical case; The screw mandrel (2) that embed threaded stopper (5) and threadless stopper (6) respectively at the two ends of cylindrical case, is with collar (7) passes from threadless stopper (6), is closed by the screw thread line with threaded stopper (5), makes barbed entire body EXPANSION ANCHOR BOLTS.

2, by the described barbed entire body EXPANSION ANCHOR BOLTS of claim 1, it is characterized in that: described stopper is the stopper that has tapering, and stopper (5) has screw thread, the no screw thread of stopper (6).

3, by the described barbed entire body EXPANSION ANCHOR BOLTS of claim 1, it is characterized in that: described threadless stopper (6) is with collar (7) with the stubborn silk position N of screw mandrel (2).

4, by the described barbed entire body EXPANSION ANCHOR BOLTS of claim 4, it is characterized in that: the stubborn silk top, position of described screw mandrel (2) can be a flat-top, also can have hook or annular distance.