CN2270841Y - Flat type expansion screw - Google Patents
Flat type expansion screw Download PDFInfo
- Publication number
- CN2270841Y CN2270841Y CN 96205759 CN96205759U CN2270841Y CN 2270841 Y CN2270841 Y CN 2270841Y CN 96205759 CN96205759 CN 96205759 CN 96205759 U CN96205759 U CN 96205759U CN 2270841 Y CN2270841 Y CN 2270841Y
- Authority
- CN
- China
- Prior art keywords
- screw
- double
- expansion tube
- utility
- stud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model belongs to a fastening and coupling device for buildings, which comprises a stud, an expansion tube and a shim. The utility model is characterized in that the side face of the stud is provided with a convex clamp clamped in a concave seam of the expansion tube; the external end of the stud is provided with an axial central screw hole and is screwed with a screw. The convex clamp can be a pin penetrating through the stud transversely. The utility model has the advantages of beautiful and smooth appearance and convenient operation.
Description
The utility model belongs to the connection set that tightens up on the building.
Existing expansion of metal screw is made up of double-screw bolt overcoat expansion tube, pad, the nut (mother) of interior plush copper.In the use, setscrew is put in the building hole, fastening nut, and expansion tube expansion stretching hole is fixed.Because of the hole depth and the difficult unification of double-screw bolt length, it is longer that often stud head stretches out the outside, promptly is in the way, not attractive in appearance again.
The purpose of this utility model is to protrude problem in order to eliminate stud head, and a kind of flat setscrew is provided.
The purpose of this utility model is finished by following technological scheme: it comprises double-screw bolt, expansion tube, pad, and the double-screw bolt side is provided with convex clip, is stuck in the recessed joint of expansion tube, and the external end head of double-screw bolt is provided with the axial centre screw, and is spirally connected with screw.
Above-mentioned convex clip can have varied, as lateral pin, tappet etc., only needs to block expansion tube and rotates, moves.
Above-mentioned screw can be for varied, as hex screw, and " one " word screw, " ten " word screw etc.
The utility model is such work: double-screw bolt is put into building hole (screw spins) together with expansion tube, and the switching screw makes double-screw bolt and screw urge tightly the distending expansion tube mutually.
Fig. 1 is the utility model embodiment 1 a structural drawing
Further describe embodiment below in conjunction with accompanying drawing: double-screw bolt 1 rear portion has the tapering plush copper, and there is axial screw the front portion, and the middle part is laterally established lateral pin 2 and is convex clip.Expansion tube 3 leading portions have 2 axial elongated slots, and it is to expand to prop up to crack that 3 cracking grooves 7 are established at the rear portion.2 axial elongated slots of leading portion stagger with 3 cracking grooves 7 at rear portion and do not link to each other.The front axle of hex screw 6 and double-screw bolt 1 is to the screw threaded, and is equipped with plain cushion 4, bullet pad 5.
In a word, the utility model is divided into two sections on double-screw bolt and screw by single double-screw bolt, and screw spins with double-screw bolt earlier, puts clamp-screw behind the wall hole into.Because of adopting screw to replace nut, avoided stud head protrusion (need not cut), external form is smooth, attractive in appearance, is not in the way.And screw can be selected stainless steel material for use, and is economical and practical, attractive in appearance.
If on double-screw bolt, open a cross-drilled hole, fill in a lateral pin as clamp, then technology is simple, and is easily manufactured, and cost is low.
Claims (2)
1, a kind of flat setscrew comprises double-screw bolt (1), expansion tube (3), pad, it is characterized in that; The double-screw bolt side is provided with convex clip (2), is stuck in the recessed joint of expansion tube (3), and the external end head of double-screw bolt is provided with the axial centre screw, and is spirally connected with screw (6).
2, flat setscrew as claimed in claim 1 is characterized in that: above-mentioned convex clip is for crossing the pin of double-screw bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96205759 CN2270841Y (en) | 1996-03-27 | 1996-03-27 | Flat type expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96205759 CN2270841Y (en) | 1996-03-27 | 1996-03-27 | Flat type expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2270841Y true CN2270841Y (en) | 1997-12-17 |
Family
ID=33890628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96205759 Expired - Fee Related CN2270841Y (en) | 1996-03-27 | 1996-03-27 | Flat type expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2270841Y (en) |
-
1996
- 1996-03-27 CN CN 96205759 patent/CN2270841Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |