CN1487207A

CN1487207A - Improved expansion bolt

Info

Publication number: CN1487207A
Application number: CNA021457050A
Authority: CN
Inventors: 黄邦卿; 陈志宗
Original assignee: JIUKE INDUSTRY ENTERPRISE Co Ltd
Current assignee: JIUKE INDUSTRY ENTERPRISE Co Ltd
Priority date: 2002-09-30
Filing date: 2002-09-30
Publication date: 2004-04-07

Abstract

The improved expansion screw includes one screw bolt and one nail tube, and the nail tube has one screw nut in the front end and hollow middle part to form at least one expansion section, and features that on the nail tube section between the screw nut and the expansion section there is at least one Pi-shaped slot with one inside laminated expansion piece, bent longitudinal connecting piece and ring. When the front screw nut of the nail tube is pressed inwards by the screw bolt, the laminated expansion piece is forced to expand outwards to overlap with the ring in the front end while the longitudinal connecting piecc extrudes outwards from the bent section to combine firmly with the drilled hole in wall. The present invention is suitable for both solid and hollow wall and is practical.

Description

Improved swell fixture

Technical field

The present invention relates to a kind of swell fixture, particularly a kind of improved swell fixture that can be applicable to that various different actual situation bodies of wall all can firmly be installed.

Background technique

Swell fixture style and kind are a lot, yet conclude substantially just like Fig. 1, swell fixture shown in 2 is most typical representative, swell fixture 10 wherein shown in Figure 1 is mainly to comprise the bolt 11 that a cover group has pad 12, one nail pipe, 13 and one packing awl piece 14, wherein these nail pipe 13 leading portions are an extending section 131, can be sheathed for the miner diameter end of packing awl piece 14, and this swell fixture 10 can be in the construction drill 21 that is inserted in solid wall 20 (as shown in Figure 3), utilize the rotational lock of bolt 11 again, so that this packing awl piece 14 is drawn rearward into nail pipe 13, force the extending section 131 of these nail pipe 13 its leading portions to expand outwardly, and it is fixing to form to compel the hole wall that squeezes at construction drill 21, and utilizes this bolt 11 to provide and wear the extension mounting article on the wall; But this kind of swell fixture 10 only can be applicable to the use of solid wall, just as run into and arrange the brick with space and make body of wall and be difficult to be suitable for.

Fig. 2,4 is depicted as the schematic perspective view of second section of known swell fixture structure for another example, a cover group of this swell fixture 10 ' include have pad 12 ' bolt 11 ' and nail pipe 13 ', this nail pipe 13 ' front end is in conjunction with a nut 14 ' can supply a bolt 11 ' interlocking, and nail manage 13 ' leading portion be provided with the annular Kong Erwei of engraving one expansion arc 131 '; But this known swell fixture 10 ' insertion hollow wall 20 ' construction drill 21 ' in, though its expansion arc 131 ' swell increment greater than the swell fixture 10 of preceding article, so still be difficult to control expansion arc 131 ' position, can stagger body of wall 20 ' hollow position 210 ', therefore unavoidably situation as shown in Figure 4 can take place, though be swell fixture 10 ' its expansion arc 131 ' expand, be positioned at hollow position 210 ', and can't block really tie in construction drill 21 ' the shortcoming of hole wall.When in fact being inserted in body of wall owing to swell fixture; the builder often can't judge accurately that this body of wall internal structure is hollow or solid wall; thereby regular meeting causes the many puzzlements when constructing; so how at the many puzzlements in the use of above known swell fixture; and the swell fixture of improvement a kind of applicable solid wall of design and hollow wall; with the above-mentioned construction puzzlement of effective solution, be the difficulty place that solves for institute of the present invention desire row.

Summary of the invention

The present invention will provide a kind of improved swell fixture, makes it can be applicable to the technical problem of the strong bonded of various solid or hollow walls with solution.

It is such solving the problems of the technologies described above the technological scheme that is adopted:

A kind of improved swell fixture is to include a bolt and a nail pipe, and wherein this nail pipe front end has a nut, and its stage casing circular row hollow out forms the expansion arc more than at least one section, it is characterized in that:

On the nail pipe between the expansion arc in this nail pipe front end nut and stage casing, be provided with at least more than one spaced ＂ㄇ＂ shape groove, each ＂ㄇ＂ shape groove inboard is to there being an expansion lamination;

Respectively the vertical connecting sheet between this ＂ㄇ＂ shape groove is to be a bend section;

This bend section outside has a ring;

The outside of this ring convexes with a plurality of bonding pads for a nut solder bond;

This nail pipe is held the location convex body that is provided with at least more than one in addition;

This bolt has a bolt head, the sheathed pad of its neck;

This bolt non-bolt head, and with one have the hex washer nut lock group of pad.

The present invention includes a cover group bolt of pad and the nail pipe box group that a front end has nut are arranged, and wherein this nail pipe stage casing is cutd open to establish and had hollow slots, and forms more than one at least expansion arc; On the nail pipe between expansion arc and nut, be provided with a plurality of ＂ㄇ＂ shape grooves, have an expansion lamination in each ＂ㄇ＂ shape groove inboard; Vertical connecting sheet between each ＂ㄇ＂ shape groove then is a bend section again, and this vertical connecting sheet outside nail pipe forms a ring, its exterior edge face convexes with a plurality of in conjunction with lug, can supply a nut solder bond, and its nail pipe can be provided with the expansion arc more than at least one section, forming the expansion that multistage expands, make it can be applicable to the technical problem of the strong bonded of various solid or hollow walls thereby solved.

The present invention is simple in structure, and its advantageous effect is as follows:

1, the present invention can be widely used in the swell fixture that the construction drill on various solid walls and the hollow wall uses.

2, the present invention is provided with a plurality of expansion laminations at nail tube swelling section front end, to form double-layer overlapping, can form the strong bonded of dual packing in construction drill.

3, its nail pipe of the present invention can combine with the structure packing of body of wall inside with an expansion arc at least when expansion, and improve the success rate of construction with the expansion arc of multi-section type.

Description of drawings

Fig. 1 is the three-dimensional exploded view of known swell fixture.

Fig. 2 is the three-dimensional exploded view of second section of known swell fixture.

Fig. 3 is the generalized section of known swell fixture at a solid wall.

Fig. 4 is the generalized section of second section of known swell fixture at a hollow wall.

Fig. 5 is a three-dimensional structure diagram of the present invention.

Fig. 6 is a perspective exploded view of the present invention.

Fig. 7 is the expansion floor map that the present invention follows closely pipe.

Fig. 8 is the present invention's generalized section before the drawing in solid wall.

Fig. 9 is the present invention's generalized section behind the drawing in solid wall.

Figure 10 is the present invention's generalized section before the drawing in hollow wall.

Figure 11 is the present invention's generalized section behind the drawing in hollow wall.

Figure 12 is the enforcement illustration of bolt of the present invention outer end and pad nut lock group.

Embodiment

Be depicted as three-dimensional structure diagram of the present invention and perspective exploded view as Fig. 5,6, it is to consist predominantly of one in neck cover group the bolt 30 and a nail pipe 40 of pad 31 to be arranged, and the front end of this nail pipe 40 is provided with a nut 32, can supply the interlocking of this bolt 30.

Figure 7 shows that and for example the present invention follows closely the expansion floor map of pipe 40, the expansion lamellar body 40 of this nail pipe 40 ' at one end engrave be provided with spaced hollow slots 41 more than at least one section ', and its upside be provided with at least more than one spaced ＂ㄇ＂ shape groove 42 ', each ＂ㄇ＂ shape groove 42 ' the inboard have expansion lamination 42, again this ＂ㄇ＂ shape groove 42 ' outer side 43 ' convex with a plurality of in conjunction with lug 431 ', again the expansion lamellar body 40 of nail pipe 40 ' end in addition, dash the protrusion sheet 44 that is provided with at least more than one '.

Nail pipe 40 shown in the three-dimensional exploded view of Fig. 6, it is formed by the longitudinal curl of this expansion lamellar body 40 ' in addition and makes spaced hollow slots 41 ' the be rolled into expansion arc 41 more than at least one section, and its upside ＂ㄇ＂ shape groove 42 ' at inside formation one expansion lamination 42 outwardly, again each ＂ㄇ＂ shape groove 42 ' vertical connecting sheet then curve a bend section 421, its outer side 43 ' then be rolled into one have in conjunction with lug 431 ' ring 43, and the protrusion sheet 44 of at least more than one that the other end is set ', can outwards be convexly equipped with into location convex body 44; These ring 43 outsides in conjunction with lug 431 ' can with nut 32 solder bond, and be combined into swell fixture stereochemical structure for bolt 30 front ends stretch into interlocking as Fig. 5.

Be depicted as the enforcement illustration of the present invention as Fig. 8,9 at a solid wall, the swell fixture of above composition is inserted in the construction drill 21 on the solid wall 20 with an end of nut 32, can be forced into construction drill 21 outer sections by the location convex body 44 of nail pipe 40 outer ends, make nail pipe 40 location motionless; And with instrument during by bolt 30 its bolt head rotating bolts 30 in solid wall 20 outsides, make the hollow slots 41 of its expansion arc 41 ' connecting sheet can be subjected to the helical rotation effect of bolt 30 by nut 32, expand outwardly fixing and axially oppress its each expansion arc 41; It is inside that nut 32 is also axially oppressed ring 43 simultaneously, make each ＂ㄇ＂ shape groove 42 ' vertical connecting sheet by bend section 421 bendings, and expand outwardly and compel to squeeze this expansion lamination 42 and outwards compel to open, strengthen its consolidation effect to improve swell increment, it has a combination (as shown in Figure 9) of compeling of multistage multiple spot in solid wall 20 construction drills 21 to reach.

And for example Figure 10,11 is depicted as the enforcement illustration of the present invention in hollow wall a 20 ' interior installation, when swell fixture insert with an end of nut 32 hollow wall 20 ' construction drill 21 ' in, also the location convex body 44 by nail pipe 40 outer ends is forced into construction drill 21 ' outer section, makes nail pipe 40 location motionless; Again with instrument bolt 30 its bolt head rotating bolts 30 by wall outer side, make the hollow slots 41 of each expansion arc 41 ' connecting sheet can be subjected to the helical rotation effect of bolt 30 by nut 32, expand outwardly into multistage and compel to open a combination and axially oppress it; Simultaneously the also axial compressing ring 43 of nut 32 is inside, make each ＂ㄇ＂ shape groove 42 ' vertical connecting sheet by bend section 421 bendings, and expand outwardly and compel to squeeze this expansion lamination 42 and outwards compel to open; Therefore, as long as the expansion lamination 42 that arbitrary expansion arc 41 or front end arranged and hollow wall 20 ' construction drill 21 ' interior solid section compeled to open and combined, can make swell fixture be consolidated in (as shown in figure 11) on the body of wall.

Have again, as shown in figure 12, for the another kind of its bolt 30 outer end bolt heads of the present invention is implemented illustration, it is the bolt head that bolt 30 outer end cover groups of the present invention have a pad 31, can also one have pad 31 ' hex washer nut 32 ' with bolt 30 ' lock group of a non-bolt head, to replace single bolt sleeve group the structure of one pad is arranged.

By above-mentioned specific embodiment structure, the improved swell fixture of the present invention with the vertical connecting sheet between ＂ㄇ＂ shape groove, can be subjected to axially compressing and outwardly-bent solid section hole wall compeling to squeeze the construction drill inboard in nail pipe leading portion; Also the expansion lamination in the ＂ㄇ＂ shape groove is outwards compeled to open simultaneously; Cooperate original expansion arc can be in body of wall, what form the multistage multiple spot compels to open a combination, so can easily swell fixture be compeled group and be fixed on various bodies of wall inside, bad to avoid constructing.

In sum, when knowing that the present invention has on the industry usability with advanced, and do not see any publication, also have novelty, a practicability, met the application important document of patent of invention, so propose application for a patent for invention in accordance with the law.

Claims

1, a kind of improved swell fixture is to include a bolt and a nail pipe, and wherein this nail pipe front end has a nut, and its stage casing circular row hollow out forms the expansion arc more than at least one section, it is characterized in that:

On the nail pipe between the expansion arc in this nail pipe front end nut and stage casing, be provided with at least more than one spaced ＂ㄇ＂ shape groove, each ＂ㄇ＂ shape groove inboard is to there being an expansion lamination.

2, improved swell fixture according to claim 1 is characterized in that: respectively the vertical connecting sheet between this ＂ㄇ＂ shape groove is to be a bend section.

3, improved swell fixture according to claim 2 is characterized in that: this bend section outside has a ring.

4, improved swell fixture according to claim 3 is characterized in that: the outside of this ring convexes with a plurality of bonding pads for a nut solder bond.

5, improved swell fixture according to claim 1 is characterized in that: this nail pipe is held the location convex body that is provided with at least more than one in addition.

6, improved swell fixture according to claim 1, it is characterized in that: this bolt has a bolt head, the sheathed pad of its neck.

7, improved swell fixture according to claim 1 is characterized in that: this bolt non-bolt head, and with one have the hex washer nut lock group of pad.