CN2132858Y

CN2132858Y - Shaped nut type upset bolt

Info

Publication number: CN2132858Y
Application number: CN 92218326
Authority: CN
Inventors: 杨辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-14
Filing date: 1992-07-14
Publication date: 1993-05-12
Anticipated expiration: 2002-07-14

Abstract

The utility model discloses a shaped nut type upset bolt, comprising a shaped nut (1), an expansion tube (2), a screw (3), a flat gasket (4) and a spring gasket (5). The shape of the shaped nut is that the middle part of the shaped nut is provided with a cone; the two ends of the shaped nut are provided with cylinders whose diameters are respectively equivalent to the inner and outer diameters of the expansion tube; one end of the small cylinder is provided with two to four dummy clubs in homogeneous distribution; the small cylinder can be inserted into a straight groove of one end of the expansion tube, which is impassable to the other end and the notch of which is disconnected to prevent the shaped nut from falling down from the expansion tube and to prevent self rotation from happening occasionally when the screw is screwed in; the screw threads of the shaped nut can be connected with screws with different head shapes. The utility model can be applied to electromechanical installation, architectural installation and installation of household apparatus.

Description

Shaped nut type upset bolt

The utility model belongs to the special construction that connects with fastening piece, the special-shaped nut type EXPANSION ANCHOR BOLTS that it mainly is made up of special-shaped nut, expansion tube, screw, packing ring.

At present known the employed EXPANSION ANCHOR BOLTS of object, pre-embedded bolt are installed on concrete, masonry and Wood member, injected screw, expanding nut and all exist many shortcomings, can not fully satisfy the installation requirement of multiple occasion.

EXPANSION ANCHOR BOLTS is made up of turnbuckle, nut, packing ring, expansion tube.EXPANSION ANCHOR BOLTS is packed in the pre-drilled, and coupled is through on the bolt, and fastening nut, bolt move vertically, and its conehead forces the expanding petal of expansion tube one end to rise outward, thus make coupled fixing.

Give and bury bolt and mainly form by bolt, nut.Bolt one end has screw thread, and the other end can be made into required form, and this end is imbedded and given in the drilling and insert concrete, waits to do fixation to be penetrated from threaded end after solid, and fastening nut then reaches the purpose of fixed object.

Inject the cylindrical bar of an end of screw for the band tip, the other end is a threaded stem, and cylindrical bar is injected in the member, and threaded stem promptly is used for fixing object.

Above-mentioned three kinds of mechanical components all are not suitable for narrow and small mounting point, and bolt exposes and protruded length is uncontrollable again, and is therefore, neither attractive in appearance, very easily stumble again, bump, cut to pieces and hinder the pedestrian and hang a stroke clothing, cause fixture dismounting difficulty simultaneously when the screw thread corrosion that exposes with after being broken.Give and bury the bolt long construction period, take a lot of work, take material in addition.Injecting screw can not expand, and specification is few, will use special-purpose nail gun during installation, and easily causes nailing to inject fully when matrix is loose, even passes matrix, otherwise causes the nailing penetrating depth not enough again, is difficult to after the installation again in member it be removed.

Expanding nut mainly is made up of expansion tube, taper pin, packing ring, screw.At first expansion tube is put into the boring of giving of member during use, then taper pin is put into expansion tube, and force taper pin to move axially by hitting a push rod, thereby make the end expansion of expansion tube fluting and choke hole wall, again screw is passed in the screw that the object that is fixed is screwed into expansion tube, realize the purpose of fixed object.Because this product all must be realized expanding when each the installation by hitting a hard push rod, the size of this swell increment is relevant with hitting power simultaneously, and once determining that it is again one " definite value " all the time, whether thrust load is irrelevant with bearing, and uses trouble so first, second carry little (for EXPANSION ANCHOR BOLTS), it is poor that there is processability of product structure again in this product in addition, and the manufacture cost height such as can only disposablely use at drawback, therefore, its application and development will be restricted.

Though the shortcoming that someone exists at the said goods and proposed some " patents " applications, these " patents " still exist such or such deficiency.(CN2063181U) exists when screw is screwed into tube core as expanding nut, and tube core can produce " rotation ", when screw does not connect with tube core and when sagging, and the shortcoming that tube core will fall down from the thin-walled expand tube.

The purpose of this utility model is at prior art and some " patent " existing shortcoming and a kind of special-shaped nut type EXPANSION ANCHOR BOLTS is provided, it can expand and can repeatedly use, and special-shaped nut also can not fall down from expansion tube and produce rotation owing to being screwed into screw, and can with the screw of various different head shapes or bolt links and screw thread does not expose, install and use to be suitable for multiple occasion, thereby replace prior art.

For achieving the above object, the solution that the utility model adopts is: a kind of by special-shaped nut, expansion tube, screw, the assembly that packing ring constitutes, the endoporus of special-shaped nut is a tapped hole, profile is the middle circle cone, two be with expansion tube in, the cylindrical body that external diameter base dimension is identical (the major part cylindrical body can save), an end of small cylinder uniform 2-4 boss, small cylinder can pack on the expansion tube with same uniform 2-4 to the end obstructed but notch is axial straight trough one end that disconnects, simultaneously boss is embedded in the straight trough, can prevent like this that special-shaped nut from falling down and when being screwed into screw and produce rotation from expansion tube, when (nose shape can be hexagon head screw or bolt again, square toes, socket cap, cup head, countersunk head etc.) pierce into spring washer successively, plain washer and by then forming one behind the special-shaped nut of expansion tube precession.

The utility model available metal material or plastics manufacturing (except the spring washer).

The utility model major advantage:

1. screw, packing ring are standard piece in the utility model, and special-shaped nut, expansion tube can be included standardization in, therefore, help product percent of pass, standardization.

2. the boss of special-shaped nut can be embedded in that to the end obstructed but notch is in the axial straight trough that disconnects on the expansion tube, thereby prevents that special-shaped nut from falling down and when being screwed into screw and produce rotation from expansion tube.

3. the oblique angle of special-shaped nut cone has improved self-locking property less than friction angle; One of expansion tube has obstructed straight trough to the end, anti-extrusion area when having increased expansion tube and carrying in component hole.

4. remove spring washer (some use occasion of this packing ring can be saved) in the model utility, other part can adopt the plastics manufacturing, thereby further reduces cost and prevent corrosion better.

5. screw head can sink in the fixed block when installing, make installation surface smooth, attractive in appearance, can not bump again, cut to pieces and hinder the pedestrian.

6. convenient disassembly is installed firmly, and is reusable, can adopt the screw or the bolt of difformity head (square toes, hexagon head, socket cap, cup head, countersunk head etc.) to fix object, enlarged application area, replaces existing procucts.

Description of drawings is as follows:

Fig. 1 is the utility model half sectional view.

Fig. 2 is Figure 1A-A sectional view.

Fig. 3 is that Fig. 1 F is to view.

Fig. 4 is that the utility model is applied to steel casement door, steel sash is installed embodiment's sectional view.

Fig. 5 is that special-shaped nut of the present utility model, expansion tube are that plastic part is applied to hanging fan governor installation embodiment sectional view.

Below in conjunction with embodiment model utility is described further:

Shown in Fig. 4, special-shaped nut 1 and expansion tube 2 according to Fig. 1, the requirement of Fig. 2 Fig. 3 fits together, that puts body of wall that concrete eight and brick masonry 9 constitute then into gives that (aperture is identical with expansion tube external diameter base dimension in the boring, hole depth is greater than the maximum extended length after special-shaped nut and the expansion tube assembling), then screw 3 is passed spring washer 5 successively, plain washer 4, in the special-shaped nut 1 of doorframe 6 precessions, continue rotary screw 3 again, special-shaped nut 1 is moved in expansion tube 2 vertically, its taper force expanding petal radially spreading choke hole wall, thereby doorframe is fixed on the body of wall.Adopt this model utility that steel casement door, steel sash are installed, antitheft door, window are than using expanding nut at present, and EXPANSION ANCHOR BOLTS is easier for installation, safe, reliable.

Fig. 5 illustrates, give boring (size requirement in hole is the same) to what special-shaped nut 1 and expansion tube 2 assembled and put into brick wall according to the same method, when using wood screw 3(wood screw to connect then, special-shaped nut inner hole is of a size of footpath at the bottom of the wood screw thread), pass hanging fan governor base plate 10 and be screwed in the special-shaped nut 1, till fixing base plate 10.This method is easy to use, installation is firm, offers convenience for the installation of household implements, light fixture.

The utility model is not limited to this specification illustrated embodiment, and it can have more kinds of different embodiments.

Claims

1, a kind of special-shaped nut type EXPANSION ANCHOR BOLTS that is used for installing on the building structural member object, it is by special-shaped nut [1], expansion tube [2], screw [3], plain washer [4], spring washer [5] is formed, it is characterized in that: the endoporus of special-shaped nut [1] is a tapped hole, profile is the middle circle cone, two cylindrical body, wherein cylindrical end uniform again 2-4 boss, this head can pack into have on expansion tube [2] same uniform 2-4 to the end obstructed but notch is straight trough one end that disconnects, boss can be embedded in the straight trough simultaneously, can be the screw or the bolt of difformity head with the joining screw of special-shaped nut [1] [3].

2, according to the described special-shaped nut type EXPANSION ANCHOR BOLTS of claim 1, it is characterized in that: special-shaped nut ［ 1 ］, expansion tube ［ 2 ］, screw ［ 3 ］, plain washer ［ 4 ］ available metal material or plastics manufacturing.

3, according to the described special-shaped nut type EXPANSION ANCHOR BOLTS of claim 1, it is characterized in that: screw ［ 3 ］ is the screw or the bolt of hexagon head, square toes, countersunk head, cup head, socket cap.

4, according to claim 1 or 2 described special-shaped nut type EXPANSION ANCHOR BOLTS, it is characterized in that: the major part cylindrical body of special-shaped nut ［ 1 ］ can save.