CN203532453U - Tapping expansion screw improved structure - Google Patents
Tapping expansion screw improved structure Download PDFInfo
- Publication number
- CN203532453U CN203532453U CN201320691431.8U CN201320691431U CN203532453U CN 203532453 U CN203532453 U CN 203532453U CN 201320691431 U CN201320691431 U CN 201320691431U CN 203532453 U CN203532453 U CN 203532453U
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- China
- Prior art keywords
- expansion sleeve
- conical plug
- bolt
- public
- internal thread
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Abstract
The utility model relates to an expansion fastener and particularly relates to a tapping expansion screw improved structure. The structure comprises an expansion sleeve, a tapered plug and a bolt. The expansion sleeve is free of internal threads and is fixed with the tapered plug into an integrated structure. Internal threads are arranged in the tapered plug, and the bolt is in threaded connection with the internal threads of the tapered plug. The expansion sleeve is only needed to be subjected to stamping process forming, so that the manufacture cost is low. The internal threads are arranged in an inner hole of the tapered sleeve, and the threaded connection between the bolt and the tapered plug can be maintained constantly in natural disasters such as violent earthquakes.
Description
Technical field
The utility model relates to a kind of expansion fastener, especially a kind of structure-improved of public dentition formula setscrew.
Background technique
Setscrew is to utilize tenon shape gradient to impel expansion tube to expand, and produces friction bond stress, reaches anchoring effect.Its installation method is: setscrew is got to the Kong Zhonghou on ground or metope, and the nut screwing up with a wrench in EXPANSION ANCHOR BOLTS, bolt walks toward outside, and the metallic sheath of outside is motionless, so the major part under bolt is just metallic sheath spreading, make the whole hole of its overflow, now, EXPANSION ANCHOR BOLTS is fastened.Setscrew be make that airduct props up, hangs, bracket is fixing on the wall, a kind of special thread link used on floor, on post.By countersunk screw, expand tube, plain washer, spring pad and hexagon nut, formed.During use, must first use the hole of electric impact drill (hammer) corresponding size on fixed body, then bolt, expand tube are put in hole, screw nut can make bolt, expand tube, assembling set and fixed body (as wall, top board etc.) between swelling become one.
Public dentition formula setscrew as shown in Figure 3, consists of interior dentition formula expansion sleeve 1, conical plug 2 and bolt 3, and applicability is extensive, is used in conjunction with interior dentition formula spiral shell expansion tube parent part and bolt bull, is applicable to any form bolt.Its construction method can adopt fixed point preset on demand, or, in the boring of single construction benefit, to beat again (dress) and enter, its function is consistent with effect and the former.When being misplaced or giving up the not used time, as long as exit bolt bull, smear and fill up agent reply plane, dangerous without excision puzzlement and protrusion percussion.
For installation of ceiling equal strength, require high place, use the more general public dentition formula setscrew that has Japanese public dentition formula setscrew, Europe, product and the existing setscrew series product of the applicant of the newborn five metals in Taiwan, dentition formula setscrew as public in Japan consists of interior dentition formula expansion sleeve, conical plug and bolt, the bulge of expansion sleeve and conical plug snapping, knock in expansion sleeve, bulge and boring are grasped, and the interior pitch thread of bolt and expansion sleeve is connected and fixed.The public dentition formula setscrew in Europe consists of interior dentition formula expansion sleeve, conical plug and bolt, approximate with Japanese product.There is the expansion sleeve of interior tooth generally to need the technological forming of milling, to having relatively high expectations of thickness and intensity.Installation method is first conical plug, interior dentition formula expansion sleeve sequentially to be knocked in boring, then coordinated fastening with bolt.
Yet, because bull and parent part are Split type structures, as furred ceiling parts, while meeting with the puzzlements such as earthquake, there will be conical plug and expansion sleeve to depart from, the risk increasing that the thing that is draped drops with expansion sleeve and bolt.How improving when the environment such as vibration that plug do not depart from expansion sleeve is a difficult problem.
Summary of the invention
Technical problem to be solved in the utility model is: the structure-improved that a kind of public dentition formula setscrew is provided.
Technical barrier of the present utility model can solve by following technical proposals: a kind of structure-improved of public dentition formula setscrew, comprise expansion sleeve, conical plug and bolt, wherein, described expansion sleeve and conical plug are fixed to integrative-structure, in conical plug, be provided with internal thread, the internal thread spiral being rotated with at conical plug with bolt is connected.Installation method is: end face punching, and bolt is inserted in expansion sleeve and is threaded with conical plug, then knock in the lump in boring, coordinate fasteningly with nut, install more laborsavingly, and while not worrying meeting the natural disasteies such as earthquake, bolt comes off with expansion sleeve.Meanwhile, because expansion sleeve is without interior tooth, its requirement of strength is reduced, and do not need original thickness, therefore cost also can significantly reduce.
On technique scheme basis, described expansion sleeve and conical plug are fastened by one deck plastic film, or the joint of expansion sleeve and conical plug is fixed by viscose glue, more convenient on-the-spot installation.
On technique scheme basis, described expansion sleeve is the involutory stamping part of a slice section bar, and involutory seam is not less than 0.5mm, not only convenient production in enormous quantities in enormous quantities, and the convenient tolerance causing because of bit wear of adjusting.
Superiority of the present utility model is: expansion sleeve only needs stamping process moulding, and manufacture cost is lower; The design of its internal thread, in the endoporus of plug, in the natural disasteies such as violent earthquake, also can remain being threaded of bolt and conical plug.
Accompanying drawing explanation
The structural representation structure that accompanying drawing 1 conical plug and expansion sleeve are adhesively fixed and are integrated;
Accompanying drawing 2 conical plugs and expansion sleeve are by the plastic film schematic diagram that is structure as a whole that is fastened;
Accompanying drawing 3 is traditional public dentition formula setscrew structural representation;
Number in the figure explanation:
1-expansion sleeve; 2-conical plug; 3-bolt;
1 '-without internal thread expansion sleeve;
2 '-there is an internal thread conical plug;
11-seam; 12-stress hole; 13-salient point;
4-plastic film winding layer.
Embodiment
A kind of structure-improved of public dentition formula setscrew, comprise without internal thread expansion sleeve 1 ', have internal thread conical plug 2 ' and bolt 3, wherein, without internal thread expansion sleeve 1 ' with there is internal thread conical plug 2 ' to be fixed to integrative-structure, by conical plug 2 ', be threaded with the internal thread of bolt.
As the be adhesively fixed structural representation structure that is integrated and accompanying drawing 2 conical plugs and expansion sleeve of accompanying drawing 1 conical plug and expansion sleeve is fastened and is structure as a whole as shown in schematic diagram by plastic film, for without internal thread expansion sleeve 1 ' with there are two kinds of means of fixation of internal thread conical plug 2 ', as the viscose glue of the jointing of Fig. 1 is fixed; Or the plastic film winding layer of Fig. 2 is fixed.
As shown in Figure 2, without internal thread expansion sleeve 2 ', be the involutory stamping part of a slice section bar, involutory seam 11 is not less than 0.5mm, the salient point 13 that is provided with stress hole 12 and fixes with boring at bulge.Not only easily manufacture, and the design in stress hole facilitates bulge to expand.Bigger involutory seam 11 can be used to proofread and correct the bore error that bit wear brings;
Without internal thread expansion sleeve 1 ' with have between internal thread conical plug 2 ' by plastic film winding layer 4 fixing.
For convenience of installation of the present utility model, described plastic film winding layer 4 twines to the bottom passage port that has internal thread conical plug 2 '.
Claims (4)
1. a structure-improved for public dentition formula setscrew, comprises expansion sleeve, conical plug and bolt, it is characterized in that: described expansion sleeve is without internal thread, be fixed to integrative-structure with conical plug, wherein, in described conical plug, be provided with internal thread, bolt is threaded with the internal thread of conical plug.
2. the structure-improved of public dentition formula setscrew according to claim 1, it is characterized in that: described expansion sleeve and conical plug are fixed by one deck plastic film winding layer, or the joint of expansion sleeve and conical plug is fixed by viscose glue.
3. the structure-improved of public dentition formula setscrew according to claim 1 and 2, is characterized in that: described expansion sleeve is the involutory stamping part of a slice section bar, and involutory seam is not less than 0.5mm.
4. the structure-improved of public dentition formula setscrew according to claim 2, is characterized in that: described plastic film winding layer twines the bottom passage port to conical plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691431.8U CN203532453U (en) | 2012-12-07 | 2013-11-05 | Tapping expansion screw improved structure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220669080 | 2012-12-07 | ||
| CN201220669080.6 | 2012-12-07 | ||
| CN201320691431.8U CN203532453U (en) | 2012-12-07 | 2013-11-05 | Tapping expansion screw improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532453U true CN203532453U (en) | 2014-04-09 |
Family
ID=50418666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320691431.8U Expired - Fee Related CN203532453U (en) | 2012-12-07 | 2013-11-05 | Tapping expansion screw improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532453U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105252272A (en) * | 2015-11-13 | 2016-01-20 | 珠海智新自动化科技有限公司 | Automatic assembly system of expansion screws |
| CN105840106A (en) * | 2016-04-14 | 2016-08-10 | 西南石油大学 | Fixing method for realizing detachability of PDC (polycrystalline diamond compact) teeth for PDC bit |
-
2013
- 2013-11-05 CN CN201320691431.8U patent/CN203532453U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105252272A (en) * | 2015-11-13 | 2016-01-20 | 珠海智新自动化科技有限公司 | Automatic assembly system of expansion screws |
| CN105840106A (en) * | 2016-04-14 | 2016-08-10 | 西南石油大学 | Fixing method for realizing detachability of PDC (polycrystalline diamond compact) teeth for PDC bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20181105 |