CN201027743Y - Double-point expansion screw - Google Patents
Double-point expansion screw Download PDFInfo
- Publication number
- CN201027743Y CN201027743Y CNU2006201424948U CN200620142494U CN201027743Y CN 201027743 Y CN201027743 Y CN 201027743Y CN U2006201424948 U CNU2006201424948 U CN U2006201424948U CN 200620142494 U CN200620142494 U CN 200620142494U CN 201027743 Y CN201027743 Y CN 201027743Y
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- Prior art keywords
- screw thread
- rod
- expansion
- expansion sleeve
- nut
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- 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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- 239000000463 material Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a two point formula inflation screws is equipped with protrusion expansion portion and an expansion sleeve on the body of rod by a threaded body of rod and constitutes characterized by: the utility model discloses a screw structure, including threaded rod body, screw rod body, expansion sleeve, two-point expansion screw, the screw rod body is equipped with the cone form expansion nut rather than matching on one side, and the left side screw thread department is equipped with the back taper nut rather than matching, is equipped with an expansion sleeve between two cone form nuts, and telescopic both ends edge is equipped with a plurality of channels to the axis direction, matches with many beads on two cone form nut toper inclined planes, be equipped with many anti-skidding lines on the circular cambered surface of expansion sleeve's both ends peripheral department, the two-point expansion screw advantage of this structure is: the double-point expansion greatly improves the expansion strength, has simple structure, simple manufacture, convenient and quick installation and convenient disassembly, and greatly reduces the labor cost and the material cost.
Description
Technical field
The utility model relates to a kind of setscrew of fixed object, and by a screwed body of rod, the body of rod is provided with and protrudes enlarged portion and an expansion sleeve composition.
Background technique
Usability with product in the technical field of setscrew does not all have too high breakthrough, and the energy degree and the utilization ratio of use do not have too big raising yet, and this has brought many inconvenience for vast user.
According to the Chinese patent literature that retrieves, application number is 200420118604.8, the applying date is on November 19th, 2004, publication number is 2755340, open (bulletin) day is on February 1st, 2006, a kind of setscrew is disclosed, include a threaded pipe, one Coupling and an expansion sleeve, wherein said threaded pipe has a screw section, and its two ends are respectively equipped with a shank and a convergence part, described convergence part is connected with described Coupling, described Coupling has a tapered portion and a junction, between described threaded pipe and Coupling, be provided with an expansion sleeve, described expansion sleeve is hollow and annular, the anchor ring of one end offers a plurality of conduits along axial direction, described conduit is positioned at tapered portion one side of Coupling, can shorten the installation time and the usage quantity of setscrew thus, reduce cost of labor and cost of material significantly, and can directly be connected with various difform retaining rings, reach and install rapidly, the effect of strong fix, but, expand owing to have only some during its interior expansion of the setscrew after installing, the insufficient strength that expands is big, steadiness also reduces to some extent with regard to corresponding, because the increase of fastener body weight or the growth of time, often make setscrew become flexible inflation port, brought serious threat and unnecessary waste economically, take second place to the people's lives and property, the setscrew of being installed is difficult to take out from inflation port when discarded, promptly influenced the waste that causes material again attractive in appearance of body surface, it drives screw rod with external nut when the setscrew of above-mentioned technology penetrates in the object retaining ring and could expand in it again, screw rod can protrude the very big joint in outside after object is fastening, has promptly caused the waste of material to influence the attractive in appearance of fastening object again.
The model utility content
The technical problems to be solved in the utility model is: provide a kind of expansion strength bigger, steadiness higher, technical more reasonable, easy to use, the dismounting easy, with low cost, make easy a kind of two point formula setscrew.
In order to solve above-mentioned technical problem, the utility model provides the two point formula setscrew of this following structure.
This two point formula setscrew, by a screwed body of rod, the body of rod is provided with and protrudes enlarged portion and an expansion sleeve composition.The described screw thread body of rod one side radially is provided with the left-hand screw thread, an opposite side is provided with radially dextrad screw thread, the end of described screw thread body of rod left-hand screw thread is provided with the square bump body less than screw thread body of rod Zhou Jing, described screw thread body of rod left-hand screw thread place is provided with the cone-shape expanding nut that matches with the left-hand screw thread, an opposite side radially dextrad screw thread place is provided with the back taper bodily form expanding nut that matches with its dextrad screw thread, between described screw thread body of rod upper cone shape expanding nut and back taper bodily form expanding nut, be provided with an expansion sleeve, described expansion sleeve is hollow and annular, the anchor ring at its two ends offers a plurality of conduits along axial direction, and described cone-shape expanding nut and the circumferential tapered slope of back taper bodily form expanding nut are provided with its expansion sleeve two ends offers a plurality of fins that a plurality of conduits match.Its optimal way of two point formula setscrew of this structure is, because multiple spot expands, the intensity that expands improves greatly, the tightness of its expansion has been dwindled very big error with the parallel angle of expansive screw in inflation port, simultaneously, fastening object has also had very high safety guarantee, when setscrew is discarded, with the square bump body on the corresponding instrument rotation of falling when the screw thread body of rod, the screw thread body of rod and outside expansion point left-hand nut can rotate inflation port easily, can reach the effect that obsolete material utilizes again.
The square bump body of described screw thread body of rod left-hand thread head setting can also be made as practical multi-arris body or concave volume shape multi-arris body, and its optimal way is to be useful for the use popularity of various tool.
The corresponding site of described expansion sleeve its expansion of two ends is provided with many anti-skidding lines, and its optimal way is, setscrew plays anti-skidding effect when expanding in inflation port, the Safety performance of the setscrew further raising of having got back simultaneously.
Adopt its more reasonable structure of two point formula setscrew of this structure, make simple and easyly, Safety performance has had very big assurance, is convenient to dismounting simultaneously.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 shows the front cut-away view of the utility model two point formula setscrew transverse integral.
Fig. 2 shows the utility model two point formula setscrew expanding nut, expansion sleeve exploded view.
Fig. 3 shows the horizontal schematic representation of the utility model two point formula setscrew screw thread body of rod.
Embodiment
The long body cylindrical thread body of rod 1 that has left-hand screw thread 3 and dextrad screw thread 2 shown in Fig. 3 is inserted in the hollow and annular expansion sleeve 7 shown in Fig. 2, the rotary screw thread body of rod 1 right-hand rotation direction screw thread place 2 of inserting of inverted cone expanding nut 5 right-hand rotation directions, cone-shape expanding nut 6 left-hand rotation formulas are inserted the screw thread body of rod 1 left-hand screw thread place 3, the square bump body 4 direction rotation to the right of vising the screw thread body of rod 1 one ends in the setscrew hole with practical tool will be inserted after the combination of the two point formula setscrew shown in Fig. 2 and Fig. 3, insert two point formula setscrew its back taper bodily form nut 5 and the cone-shape nut 6 in the expansion screw this moment, owing to draw close to the middle part of the screw thread body of rod 1 under the left-hand screw thread 3 on the screw thread body of rod 1 and the effect of dextrad screw thread 2, this moment two cone-shape nuts 5, the a plurality of fins 9 that are provided with on 6 the tapered slope, rotate the square bump body 4 of the screw thread body of rod 1 one sides with a plurality of conduits 8 mutual interlocks at expansion sleeve 7 its circular ring surface places, two ends, because two cone-shape nuts 5, the ejection effect of 6 tapered slope is arranged on the expansion sleeve 7 at middle part, and a plurality of conduits 8 and the ring wall surface at its circular ring surface place, two ends expand outwardly.
The utility model is not limited to above-mentioned mode of execution; no matter its structure make which kind of variation or mode on any change is arranged, as long as adopt two point formula expanding method and/or anyway among the screw thread body of rod of combination and two-way expanding nut all drop on protection domain of the present utility model.
Claims (3)
1. two point formula setscrew, be threaded the body of rod (1) by one, the body of rod is provided with and protrudes enlarged portion and an expansion sleeve (7) composition, it is characterized in that: the described screw thread body of rod (1) one side radially is provided with left-hand screw thread (3), an opposite side is provided with radially dextrad screw thread (2), the end of the described screw thread body of rod (1) left-hand screw thread (3) is provided with the square bump body (4) less than the screw thread body of rod (1) Zhou Jing, the described screw thread body of rod (1) left-hand screw thread place (3) is provided with the cone-shape expanding nut (6) that matches with left-hand screw thread (3), an opposite side radially dextrad screw thread (2) locates to be provided with the back taper bodily form expanding nut (5) that matches with its dextrad screw thread (2), on the described screw thread body of rod (1), be provided with an expansion sleeve (7) between cone-shape expanding nut (6) and the back taper bodily form expanding nut (5), described expansion sleeve (7) is hollow and annular, the anchor ring at its two ends offers a plurality of conduits (8) along axial direction, and the circumferential tapered slope of described cone-shape expanding nut (6) and back taper bodily form expanding nut (5) is provided with its expansion sleeve (7) two ends offers a plurality of fins (9) that a plurality of conduits (8) match.
2. two point formula setscrew according to claim 1 is characterized in that: the square bump body (4) that the described screw thread body of rod (1) left-hand screw thread (3) end is provided with can also be made as practical multi-arris body or concave volume shape multi-arris body.
3. two point formula setscrew according to claim 1 is characterized in that: the two ends of described expansion sleeve (7) are provided with a plurality of anti-skidding lines (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201424948U CN201027743Y (en) | 2006-12-29 | 2006-12-29 | Double-point expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201424948U CN201027743Y (en) | 2006-12-29 | 2006-12-29 | Double-point expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201027743Y true CN201027743Y (en) | 2008-02-27 |
Family
ID=39131952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201424948U Expired - Fee Related CN201027743Y (en) | 2006-12-29 | 2006-12-29 | Double-point expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201027743Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454864A (en) * | 2014-11-29 | 2015-03-25 | 黄传勇 | Hedging type expansion bolt |
| CN105538191A (en) * | 2016-01-28 | 2016-05-04 | 哈尔滨汽轮机厂有限责任公司 | Expanding device used for narrow space |
| CN106181570A (en) * | 2015-05-07 | 2016-12-07 | 哈尔滨飞机工业集团有限责任公司 | The comprehensive location of a kind of rotating ring forging part and aligning method |
| CN107014443A (en) * | 2017-05-25 | 2017-08-04 | 深圳中研塑力科技有限公司 | Suitable for the inner insert stress strain gauge of structural member |
| CN107191453A (en) * | 2017-08-03 | 2017-09-22 | 袁基芳 | Two-way setscrew |
| CN108814702A (en) * | 2018-04-16 | 2018-11-16 | 魏大平 | High-precision for orthopaedics fracture reduction operation locks bone nail certainly |
| CN108814701A (en) * | 2018-04-16 | 2018-11-16 | 魏大平 | The anti-loosening bone nail of centring type for bone surgery |
| CN112902776A (en) * | 2021-03-02 | 2021-06-04 | 陕西新通宇彤智能科技有限公司 | Expansion sealing sleeve of high-pressure electromagnetic force blasting device |
| CN113606232A (en) * | 2021-06-29 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Double-end expansion connecting part |
| CN114876927A (en) * | 2022-04-11 | 2022-08-09 | 嘉兴易达新材料科技股份有限公司 | Anti-loosening fastening tooth bar for tower crane |
-
2006
- 2006-12-29 CN CNU2006201424948U patent/CN201027743Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454864A (en) * | 2014-11-29 | 2015-03-25 | 黄传勇 | Hedging type expansion bolt |
| CN106181570A (en) * | 2015-05-07 | 2016-12-07 | 哈尔滨飞机工业集团有限责任公司 | The comprehensive location of a kind of rotating ring forging part and aligning method |
| CN106181570B (en) * | 2015-05-07 | 2018-04-10 | 哈尔滨飞机工业集团有限责任公司 | A kind of comprehensive positioning of rotating ring forging part and aligning method |
| CN105538191A (en) * | 2016-01-28 | 2016-05-04 | 哈尔滨汽轮机厂有限责任公司 | Expanding device used for narrow space |
| CN107014443A (en) * | 2017-05-25 | 2017-08-04 | 深圳中研塑力科技有限公司 | Suitable for the inner insert stress strain gauge of structural member |
| CN107191453A (en) * | 2017-08-03 | 2017-09-22 | 袁基芳 | Two-way setscrew |
| CN108814702A (en) * | 2018-04-16 | 2018-11-16 | 魏大平 | High-precision for orthopaedics fracture reduction operation locks bone nail certainly |
| CN108814701A (en) * | 2018-04-16 | 2018-11-16 | 魏大平 | The anti-loosening bone nail of centring type for bone surgery |
| CN108814701B (en) * | 2018-04-16 | 2021-01-01 | 河南省洛阳正骨医院（河南省骨科医院） | Centering type anti-loosening bone nail for orthopedic surgery |
| CN112902776A (en) * | 2021-03-02 | 2021-06-04 | 陕西新通宇彤智能科技有限公司 | Expansion sealing sleeve of high-pressure electromagnetic force blasting device |
| CN112902776B (en) * | 2021-03-02 | 2023-11-28 | 陕西新通宇彤智能科技有限公司 | Expansion sealing sleeve of high-voltage electromagnetic blasting device |
| CN113606232A (en) * | 2021-06-29 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Double-end expansion connecting part |
| CN114876927A (en) * | 2022-04-11 | 2022-08-09 | 嘉兴易达新材料科技股份有限公司 | Anti-loosening fastening tooth bar for tower crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20091229 |