CN1087409A - Elastic expansion bolt and manufacture method thereof - Google Patents
Elastic expansion bolt and manufacture method thereof Download PDFInfo
- Publication number
- CN1087409A CN1087409A CN 92114188 CN92114188A CN1087409A CN 1087409 A CN1087409 A CN 1087409A CN 92114188 CN92114188 CN 92114188 CN 92114188 A CN92114188 A CN 92114188A CN 1087409 A CN1087409 A CN 1087409A
- Authority
- CN
- China
- Prior art keywords
- expansion
- tube
- pipe box
- bolt
- expansion tube
- 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.)
- Pending
Links
Landscapes
- Dowels (AREA)
Abstract
A kind of EXPANSION ANCHOR BOLTS that is fly bomb shape is shaped on the circular cone tube of screw thread and stage casing by leading portion and is shaped on and washes open mouthful and expand tube, pipe box and the plain bolt of corresponding Guan Yi are formed.Adopt the metal blank sheet to roll up the making that round method is finished the expansion tube screw thread again through rolling out oblique ripple, save nut, when nut precession conical tube and pipe box are overlapping, produce extrusion expansion, when bolt screws again, expansion tube middle part wash open mouthful and corresponding Guan Yi around produce folding, crooked or distortion is expanded, both increased tightness, increased the plasticity that expands again, standard or off-gauge boring, punching all applicable, and simple in structure, fast assembling and disassembling, safety attractive in appearance.
Description
The invention belongs to a kind of EXPANSION ANCHOR BOLTS, the expansion tube that is fly bomb shape is shaped on screw thread, Guan Yi and is with pipe box, has the solid function of two-restriction.
Traditional expansion bolt adopts built-in conical bolt headgear pipe to pull out expansion outward, and fastening point is single, the inconvenience mounting or dismounting, and the lead screw that exposes is not attractive in appearance easily to constitute injury to the people again.CN90208535.2 has announced a kind of swell fixture, adopts built-in conical nut to pull out expansion outward, and safety attractive in appearance, deficiency still are that fastening point is single, and built-in nut can cause the bore of boring to increase and use inconvenience.
The objective of the invention is to propose a kind of material-saving simple in structure, elastic expansion bolt convenient to use, the solid function of its two-restriction can make the Applicable scope of EXPANSION ANCHOR BOLTS enlarge.
The present invention is achieved in that the fly bomb shape expansion tube that is with pipe box pushes boring, and open Guan Yi just holds out against hole wall; The diameter of bolt, tube wall, the addition of pipe box joint is greater than the diameter of boring, and when the bolt precession, threaded circular cone tube is expanded gradually, bolt, tube wall, generation extrusion expansion when pipe box is overlapping.When bolt continued to hang tight, the V-shaped part at expansion tube middle part and Guan Yi occurred folding, crooked on every side or the distortion expansion, thereby make this EXPANSION ANCHOR BOLTS reach the solid effect of two-restriction.
Advantage of the present invention is: the expansion tube leading portion is the circular cone tube, easily advances; The stage casing has the pipe wing to support, and is difficult for getting loose; Be shaped on screw thread in the expansion tube and remove nut, simple material-saving from; Adopt extrusion expansion to add folding, crooked or distortion is expanded, increased tightness, increased the plasticity that expands again, standard or off-gauge boring, punching and all can use.
Below in conjunction with description of drawings a kind of embodiment of the present invention:
Figure one is a structural representation of the present invention.
Figure two is that expansion tube of the present invention launches planimetric map.
With sheet metal towards base, stamping out on one side is three stepped tooths, three limits are the base sheet of right angle side in addition, middle part and stepped tooth at the base sheet are washed three V-shaped parts side by side respectively open, laterally (as setting this EXPANSION ANCHOR BOLTS is the 10mm specification to the stepped tooth section of base sheet with the angle that tiltedly goes out a ripple spacing of central vertical line, the tube wall girth is 31.4mm, flight pitch is 1.5mm, width is the relative central vertical line inclination 1.5mm of an end of the base sheet of 31.4mm) advance the annular corrugated roller of double end of rotation, roll out oblique ripple (its ripple spacing is corresponding with this expansion tube flight pitch), the volume circle becomes cylinder expansion tube (1) again, at this moment, an oblique ripple of volume circle just is a circle screw thread, the gap of jam-packed thread section is pressed into circular cone tube (102), the pipe box (2) of sheet metal volume circle is inserted in the circular cone tube, and (this pipe box external diameter is less than the expansion tube external diameter, wall thickness is greater than [bore diameter-(diameter of bolt-thread depth)-expansion tube wall thickness * 2] ÷ 2), extrude collar (103) fastening pipe box at the circular cone nozzle, raising the V-arrangement tube wall respectively is Guan Yi (101), and bolt (3) screws to produce and expands.
Claims (2)
1, a kind of EXPANSION ANCHOR BOLTS of being made up of expansion tube, pipe box and bolt is characterized in that the expansion tube leading portion is the circular cone tube and is shaped on screw thread, and the stage casing is provided with washes mouth and corresponding Guan Yi open, and expansion tube also is with pipe box and is provided with collar.
2, a kind of making method that is used for the described expansion tube of claim 1 is characterized in that this pipeline thread adopts behind the oblique line ripple of sheet metal through extruding a determining deviation making method of volume circle to finish again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114188 CN1087409A (en) | 1992-11-28 | 1992-11-28 | Elastic expansion bolt and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114188 CN1087409A (en) | 1992-11-28 | 1992-11-28 | Elastic expansion bolt and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1087409A true CN1087409A (en) | 1994-06-01 |
Family
ID=4946823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114188 Pending CN1087409A (en) | 1992-11-28 | 1992-11-28 | Elastic expansion bolt and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1087409A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363634C (en) * | 2005-01-21 | 2008-01-23 | 久可工业股份有限公司 | Tack structure |
| CN101607279B (en) * | 2009-07-23 | 2011-05-04 | 宁波安拓实业有限公司 | Multi-location cold-extrusion molding method of tube blank of hit anchor |
| CN102996592A (en) * | 2012-11-28 | 2013-03-27 | 芜湖博耐尔汽车电气系统有限公司 | Buckle fixing structure |
-
1992
- 1992-11-28 CN CN 92114188 patent/CN1087409A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363634C (en) * | 2005-01-21 | 2008-01-23 | 久可工业股份有限公司 | Tack structure |
| CN101607279B (en) * | 2009-07-23 | 2011-05-04 | 宁波安拓实业有限公司 | Multi-location cold-extrusion molding method of tube blank of hit anchor |
| CN102996592A (en) * | 2012-11-28 | 2013-03-27 | 芜湖博耐尔汽车电气系统有限公司 | Buckle fixing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1087409A (en) | Elastic expansion bolt and manufacture method thereof | |
| CN207848139U (en) | A kind of hollow anchor bolt | |
| CN2292181Y (en) | Upset screw | |
| CN205858899U (en) | A kind of anchor expansion nut assembly | |
| CN2268796Y (en) | Expansion pipe | |
| CN2242990Y (en) | Top-expansion type expansion bolt | |
| CN2349933Y (en) | Externally locking telescopic rod | |
| CN2623929Y (en) | Two-way expansion bolt | |
| CN2328823Y (en) | Whole body expanding bolt with spur | |
| CN2210963Y (en) | Expansion screw | |
| CN2403938Y (en) | Expansion bolt | |
| CN2498393Y (en) | Two end expandable screw bolt | |
| CN2219395Y (en) | Backward hook type detachable expansive bolt | |
| CN2146598Y (en) | Quick-mounting and dismounting expansion screw | |
| CN2434468Y (en) | Core striking expansion bolt sleeve | |
| CN2937600Y (en) | Expansion pipe | |
| CN2876406Y (en) | plastic expansion pin | |
| CN2632375Y (en) | Internal expanding bolt | |
| CN2386238Y (en) | Expansion bolt | |
| CN2215619Y (en) | Strong safety expansion nail | |
| CN2215618Y (en) | Safety expansion nail | |
| CN2269489Y (en) | Expanding bolt | |
| CN2168112Y (en) | Expansion screw assemblage | |
| CN2381829Y (en) | Detachable expanding screw | |
| CN2333836Y (en) | Strong anchoring expansion bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |