CN104564956A - Expansion fastening element - Google Patents
Expansion fastening element Download PDFInfo
- Publication number
- CN104564956A CN104564956A CN201410808956.4A CN201410808956A CN104564956A CN 104564956 A CN104564956 A CN 104564956A CN 201410808956 A CN201410808956 A CN 201410808956A CN 104564956 A CN104564956 A CN 104564956A
- Authority
- CN
- China
- Prior art keywords
- tapered collar
- screw rod
- expansion fastener
- nut
- tapered
- 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
- 230000007704 transition Effects 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
- F16B13/068—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like expanded in two or more places
Abstract
The invention discloses an expansion fastening element, which comprises a screw rod and a screw cap, wherein the screw cap is arranged on the screw rod in a sleeving way, a first conical ring and a second conical ring are arranged between the screw cap and a screw head arranged on the screw rod, the outer diameter of the first conical ring and the second conical ring which do not work is not greater than the outer diameter of the screw cap, and the outer diameter of the first conical ring and the second conical after work is greater than the outer diameter of the screw cap. The expansion fastening element has the advantages that the two conical rings are adopted for forming an expanding element, good flexibility is realized, a connected plate-shaped component cannot be damaged, meanwhile, the expansion fastening element has better anchoring effects, particularly, the specification requirement range of anchoring holes in the anchoring construction process is wider, and better usability is realized; an open groove is formed in each conical ring, so that the conical rings can be easily extruded to be expanded; ordinary hexagon head bolts are used, the manufacturing is simple, and the cost can be reduced.
Description
Technical field
The present invention relates to a kind of fastening piece, be specially a kind of expansion fastener.
Background technique
In order to the tabular components such as natural stone slab are fixed in bearing structure, a kind of method is the outer little interior large ladder blind hole of processing on tabular component, then the fastening piece adopting the crab-bolt with conical nose and expansion element to form fixes, and crab-bolt makes expansion element umbrella-type expand and is stuck in the macropore of ladder blind hole.The shortcoming of this Placement is that the requirement on machining accuracy to stone material of fastening piece is high especially, when fluctuation among a small circle appears in blind hole processing specification time, just there will be the problem that anchor force sharply declines, in the process that reality uses, there is certain engineering Quality Safety risk.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of expansion fastener, has and practical application processing specification is had to very large containment and increases the novel fastener of anchoring quality, thus solve the problem.
For achieving the above object, the invention provides following technological scheme: a kind of expansion fastener, comprises screw rod, also comprise the nut be sleeved on screw rod, between the spiral shell head that described nut and described screw rod are arranged, the first tapered collar and the second tapered collar are installed; And described first tapered collar do not worked and described second tapered collar external diameter are not more than nut external diameter, described first tapered collar after work and described second tapered collar external diameter are greater than nut external diameter.
Further, described first tapered collar and described second tapered collar one end are equipped with arc convex, and described first tapered collar and described second tapered collar are provided with arc convex end contacts with each other.
Further, described first tapered collar and described second tapered collar are provided with described arc convex end and are provided with more than at least three the radial grooves extended.
Further, bottom described first tapered collar and the relatively little one end of described second tapered collar, be provided with planar circular, and described planar circular and described screw rod radial cross section level.
Further, described screw rod and described spiral shell head fixed connection place arrange an arc shaped surface installed for transition.
Further, described spiral shell head is circular or polygonal.
Further, described nut is screwed cylinder or shape changeable cylinder, and can replace with sleeve.
Further, described bottom portion of groove is at the bottom of curve bath.
Compared with prior art, the invention has the beneficial effects as follows: this kind of expansion fastener adopts two tapered collar composition expanding pieces, there is good pliability, the tabular component be connected can not be damaged, the present invention simultaneously has preferably anchoring effect, special in anchoring construction to specification requirement wider range of anchor hole, there is preferably usability; Tapered collar is provided with fluting, makes tapered collar more easily be extruded and expand; Use the bolt of conventional hexagonal-head, manufacture simple, can reduce costs.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in detail, to make above-mentioned advantage of the present invention definitely.
Fig. 1 is a kind of expansion fastener work pre-structure schematic diagram of the present invention;
Fig. 2 is structural representation after a kind of expansion fastener work of the present invention;
Fig. 3 is a kind of expansion fastener tapered collar structural representation of the present invention;
In figure: 1, screw rod; 2, nut; 3, the first tapered collar; 4, spiral shell head; 5, the second tapered collar; 6, groove; 61, at the bottom of curve bath; 7, arc convex; 8, planar circular; 9, arc shaped surface.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention; technological scheme in the embodiment of the present invention is clearly and completely described; obviously; described embodiment is only the present invention's part embodiment; instead of whole embodiments; based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-3, the invention provides a kind of technological scheme: a kind of expansion fastener, comprise screw rod 1, also comprise the nut 2 be sleeved on screw rod 1, between the spiral shell head 4 that nut 2 and described screw rod 1 are arranged, the first tapered collar 3 and the second tapered collar 5 is installed.And the first tapered collar 3 do not worked and the second tapered collar 5 external diameter are not more than nut 2 external diameter, the first tapered collar 3 after work and the second tapered collar 5 external diameter are greater than nut 2 external diameter.
First tapered collar 3 and second tapered collar 5 one end are equipped with arc convex 7, and the first tapered collar 3 and the second tapered collar 5 are provided with arc convex 7 end contacts with each other.And arc convex 7 to contact part area of contact little, be easily out of shape under the extruding of nut 2, and the first tapered collar 3 and the second tapered collar 5 are provided with arc convex 7 end is provided with more than at least three radial extending flutes 6; The stress overcoming self is needed when tapered collar is expanded, because the existence of groove 6, the destroyed part of self stress, and then easily expand.Be provided with planar circular 8 bottom first tapered collar 3 and the relatively little one end of the second tapered collar 5, and planar circular 8 and screw rod 1 radial cross section level, planar circular 8 is for extruding tapered collar and bearing the axial pressure in screw rod 1 direction; Screw rod 1 and spiral shell head 4 fixed connection place arrange an arc shaped surface 9 installed for transition, are easy to the expansion of tapered collar.Spiral shell head 4 is circular or polygonal.Nut 2 is screwed cylinder or shape changeable cylinder, and can replace with sleeve.Be at the bottom of curve bath 61 bottom groove 6, be conducive to groove 6 opening and become large.
Concrete principle: during use, first tapered collar 3 and the second tapered collar 5 and nut 2 are all sleeved on screw rod 1, and the first tapered collar 3 and the second tapered collar 5 are provided with arc convex 7 end contacts with each other, nut 2 is sleeved on outermost, then by nut 2, first tapered collar 3 and the second tapered collar 5 are extruded, make the first tapered collar 3 and the second tapered collar 5 enlarged outside diameter and embed the reserved inside grooves of fixing device, simultaneously because the first tapered collar 3 and second tapered collar 5 one end are equipped with arc convex 7, so when contacting with each other, too large resistance can not be produced, relative flush end very easily produces slip, again because the first tapered collar 3 and the second tapered collar 5 are provided with arc convex 7 end be provided with several grooves 6, such as 3-10, first tapered collar 3 and the second tapered collar 5 Geng are easily expanded, and reach fastening effect.
Anchoring bearing capacity of the present invention tentatively can calculate according to formula through practical application, designs instruction to facilitate user:
F＝K*E*H：
Wherein:
F: design carrying anchor force; K: coefficient of colligation; E: material damage intensity; H: drilling depth.
The present invention is that a kind of expansion fastener adopts two tapered collar composition expanding pieces, have good pliability, can not damage the tabular component be connected, the present invention simultaneously has preferably anchoring effect, special in anchoring construction to specification requirement wider range of anchor hole, there is preferably usability; Tapered collar is provided with fluting, makes tapered collar more easily be extruded and expand; Use the bolt of conventional hexagonal-head, manufacture simple, can reduce costs.
Last it is noted that the foregoing is only the preferred embodiments of the present invention; be not limited to the present invention; although with reference to previous embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technological scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an expansion fastener, comprises screw rod, it is characterized in that, also comprises the nut be sleeved on screw rod, is provided with the first tapered collar and the second tapered collar between the spiral shell head that described nut and described screw rod are arranged; And described first tapered collar do not worked and described second tapered collar external diameter are not more than described nut external diameter, described first tapered collar after work and described second tapered collar external diameter are greater than described nut external diameter.
2. a kind of expansion fastener according to claim 1, is characterized in that, described first tapered collar and described second tapered collar one end are equipped with arc convex, and described first tapered collar and described second tapered collar are provided with arc convex end contacts with each other.
3. a kind of expansion fastener according to claim 1, is characterized in that, described first tapered collar and described second tapered collar are provided with described arc convex end and are provided with more than at least three the radial grooves extended.
4., according to the arbitrary described a kind of expansion fastener of claim 1-3, it is characterized in that, bottom described first tapered collar and the relatively little one end of described second tapered collar, be provided with planar circular, and described planar circular and described screw rod radial cross section level.
5. a kind of expansion fastener according to claim 1, is characterized in that, described screw rod and described spiral shell head fixed connection place arrange an arc shaped surface installed for transition.
6. a kind of expansion fastener according to claim 1 or 5, is characterized in that, described spiral shell head is circular or polygonal.
7. a kind of expansion fastener according to claim 1, is characterized in that, described nut is screwed cylinder or shape changeable cylinder, and can replace with sleeve.
8. a kind of expansion fastener according to claim 1, is characterized in that, described bottom portion of groove is at the bottom of curve bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808956.4A CN104564956A (en) | 2014-12-19 | 2014-12-19 | Expansion fastening element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808956.4A CN104564956A (en) | 2014-12-19 | 2014-12-19 | Expansion fastening element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564956A true CN104564956A (en) | 2015-04-29 |
Family
ID=53081789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410808956.4A Pending CN104564956A (en) | 2014-12-19 | 2014-12-19 | Expansion fastening element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564956A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980167A (en) * | 2018-06-30 | 2018-12-11 | 中国航空工业标准件制造有限责任公司 | Core bar of the head with tangent arc |
| CN110984395A (en) * | 2019-12-21 | 2020-04-10 | 卢志宣 | Mortise and tenon connection mode of fiber-reinforced cladding wood-based structure |
| CN111207138A (en) * | 2020-03-16 | 2020-05-29 | 庞长青 | High-expansion-force anti-loosening expansion bolt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5690454A (en) * | 1992-11-23 | 1997-11-25 | Dry Dock Industries, Inc. | Anchoring retainer for threaded fasteners |
| CN2799955Y (en) * | 2005-06-06 | 2006-07-26 | 牛强 | Adjustable strong expansion bolt |
| CN201137615Y (en) * | 2007-11-30 | 2008-10-22 | 徐怀冲 | Expanding screw bolt immobilizing jacket |
| CN202531576U (en) * | 2012-02-10 | 2012-11-14 | 马曙光 | Internal strong expansion screw |
| CN202991758U (en) * | 2012-08-20 | 2013-06-12 | 中山市美图塑料工业有限公司 | Expansion connector and base hinge connecting structure using the same |
-
2014
- 2014-12-19 CN CN201410808956.4A patent/CN104564956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5690454A (en) * | 1992-11-23 | 1997-11-25 | Dry Dock Industries, Inc. | Anchoring retainer for threaded fasteners |
| CN2799955Y (en) * | 2005-06-06 | 2006-07-26 | 牛强 | Adjustable strong expansion bolt |
| CN201137615Y (en) * | 2007-11-30 | 2008-10-22 | 徐怀冲 | Expanding screw bolt immobilizing jacket |
| CN202531576U (en) * | 2012-02-10 | 2012-11-14 | 马曙光 | Internal strong expansion screw |
| CN202991758U (en) * | 2012-08-20 | 2013-06-12 | 中山市美图塑料工业有限公司 | Expansion connector and base hinge connecting structure using the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980167A (en) * | 2018-06-30 | 2018-12-11 | 中国航空工业标准件制造有限责任公司 | Core bar of the head with tangent arc |
| CN110984395A (en) * | 2019-12-21 | 2020-04-10 | 卢志宣 | Mortise and tenon connection mode of fiber-reinforced cladding wood-based structure |
| CN111207138A (en) * | 2020-03-16 | 2020-05-29 | 庞长青 | High-expansion-force anti-loosening expansion bolt |
| CN111207138B (en) * | 2020-03-16 | 2021-04-13 | 豪梅特紧固件系统(苏州)有限公司 | High-expansion-force anti-loosening expansion bolt |
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Application publication date: 20150429 |