CN102252019B - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN102252019B CN102252019B CN 201110193249 CN201110193249A CN102252019B CN 102252019 B CN102252019 B CN 102252019B CN 201110193249 CN201110193249 CN 201110193249 CN 201110193249 A CN201110193249 A CN 201110193249A CN 102252019 B CN102252019 B CN 102252019B
- Authority
- CN
- China
- Prior art keywords
- expansion
- screw mandrel
- nut
- drift
- rod
- 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
Links
- 210000003371 toe Anatomy 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses an expansion screw. The expansion screw comprises a middle rod, an expansion tube and a nut, wherein one end of the middle rod is provided with an expansion head, and the other end of the middle is in threaded connection with the nut; the expansion tube is sleeved on the middle rod and clamped and limited by the expansion head and the nut, one end of the expansion tube is partitioned into a plurality of expansion claws along the length direction of the expansion tube, and the expansion claws are wrapped on the expansion head; the middle rod is split into the expansion head, a lead screw and a connecting lead screw; the opposite ends of the expansion head and the lead screw are provided with threaded holes, the thread directions of which are in the same direction; two ends of the connecting lead screw are connected with the threaded holes respectively; and the screw-in directions of the connecting lead screw, the lead screw and the nut are the same. According to the expansion screw in the scheme, after the middle rod is unscrewed, only the expansion head and the expansion tube are left in a wall, and the lead screw protruding the wall is detached, so that flatness of the wall can be realized by simple repair; and the expansion screw has no complex structure, and increases a little cost.
Description
Technical field
The present invention relates to a kind of five metals joining work pieces, relate in particular to a kind of setscrew that can conveniently disassemble.
Background technique
The common building masonry wall of setscrew connects uses workpiece, and common setscrew is made up of king-rod, expansion tube and nut; King-rod one end is for expanding drift, expands drift and is one and have level and smooth tapering solid of rotation, and diameter is increased by identical with king-rod gradually; Its end diameter is greater than expansion tube, and expansion tube is that tubular is enclosed within on the king-rod, and expansion tube one end prolongs its length direction and is split into a plurality of expansion pawls; The expansion pawl is wrapped in and expands on the drift; The king-rod surface has long screw thread, is connected with nut on the king-rod, and the expansion tube the other end is by spacing by nut.During use setscrew is put in the preformed hole on the wall, pawl is fixed in body of wall with king-rod thereby the turn nut makes the expansion of expansion drift jack-up, and it is outer as installing and using that the threaded end of king-rod stretches out body of wall.The maximum problem of this expansion of structure screw is setscrew in case after installing, and king-rod sinks into to expand and is stuck in the body of wall and can't dismantles in the pawl, can only king-rod be exposed the body of wall end-grain cutting and slice off, and promptly be so also can't remove vestige fully.
Summary of the invention
Can conveniently king-rod be dismantled the setscrew of removing after the purpose of this invention is to provide a kind of installation.
For realizing above-mentioned purpose, the technological scheme that the present invention adopts is:
A kind of setscrew; It comprises king-rod, expansion tube and nut, and king-rod one end is for expanding drift, and the other end is connected with nut thread; Expansion tube is enclosed within on the king-rod and is spacing by expanding drift and nut clamping; Expansion tube one end prolongs its length direction and is split into a plurality of expansion pawls, and the expansion pawl is wrapped in and expands on the drift, it is characterized in that: king-rod is for dividing body structure: expand drift, screw mandrel, connection screw mandrel; The end in opposite directions that expands drift and screw mandrel has hand of spiral tapped hole in the same way, connects the screw mandrel two ends and divides other to be connected with tapped hole; The precession direction that connects screw mandrel, screw mandrel, nut is identical.
Above-mentioned a kind of setscrew is characterized in that: expand the drift tail edge and be shaped as polygonal, polygonal limit number is more than expansion pawl quantity; The bared end on screw mandrel right side is cut into square toes for convenience detach.
Setscrew among the present invention; Because king-rod is the three stage structure that is threaded, when being equipped with jack panel, expand drift, connect also use between screw mandrel, the screw mandrel more fastening, during dismounting; Be stuck in the slit between the expansion pawl owing to expand the drift stupefied meeting in afterbody limit, the situation of transfer can not occur; Connecting the screw mandrel position when pulling down nut possibly screwed out simultaneously, and as not screwed out, the be locked square toes of screw mandrel end of available spanner or pliers oppositely screw out screw mandrel.Have only the drift of expansion and expansion tube to stay in the body of wall after the back-out, the screw mandrel of outstanding body of wall is removed, and can simply repair and just realize the smooth of body of wall, and structure and uncomplicated, cost increases little.
Below in conjunction with accompanying drawing and embodiment the present invention is done explanation further.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the left view that expands drift among Fig. 1.
Among the figure 1, expand drift 2, connect screw mandrel 3, expansion tube 4, leading screw 5, packing ring 6, nut
Embodiment
Like Fig. 1, shown in Figure 2, a kind of setscrew, it comprises king-rod, expansion tube 3 and nut 6; King-rod one end is for expanding drift 1; The other end is threaded with nut 6, and expansion tube 3 is enclosed within on the king-rod and is spacing with nut 6 clampings by expanding drift 1, and expansion tube 3 one ends prolong its length direction and are split into a plurality of expansion pawls; The expansion pawl is wrapped in and expands on the drift 1; King-rod is for dividing body structure: expand drift 1, screw mandrel 4, connect screw mandrel 2, expansion drift 1 has hand of spiral tapped hole in the same way with the end in opposite directions of screw mandrel 4, connects screw mandrel 2 two ends and divides other to be connected with tapped hole; The precession direction that connects screw mandrel 2, screw mandrel 4, nut 6 is identical.Expand drift 1 tail edge and be shaped as Hexagon, expansion pawl quantity is four; The bared end on screw mandrel right side is cut into square toes for convenience detach.
Claims (2)
1. setscrew, it comprises king-rod, expansion tube (3) and nut (6), king-rod one end is for expanding drift (1); The other end is threaded with nut (6); Expansion tube (3) is enclosed within on the king-rod and is spacing with nut (6) clamping by expanding drift (1), and expansion tube (3) one ends prolong its length direction and are split into a plurality of expansion pawls, and the expansion pawl is wrapped on the expansion drift (1); It is characterized in that: king-rod is for dividing body structure; Be specially three parts: expand drift (1), screw mandrel (4), connect screw mandrel (2), expand drift (1) and have hand of spiral tapped hole in the same way, connect screw mandrel (2) two ends and be connected with said tapped hole respectively with holding in opposite directions of screw mandrel (4); The precession direction that connects screw mandrel (2), screw mandrel (4), nut (6) is identical.
2. a kind of setscrew according to claim 1 is characterized in that: expand drift (1) tail edge and be shaped as polygonal, polygonal limit number is more than expansion pawl quantity; The bared end on screw mandrel right side is cut into square toes for convenience detach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110193249 CN102252019B (en) | 2011-07-04 | 2011-07-04 | Expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110193249 CN102252019B (en) | 2011-07-04 | 2011-07-04 | Expansion screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102252019A CN102252019A (en) | 2011-11-23 |
| CN102252019B true CN102252019B (en) | 2012-12-26 |
Family
ID=44979505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110193249 Expired - Fee Related CN102252019B (en) | 2011-07-04 | 2011-07-04 | Expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252019B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10624220B2 (en) | 2018-03-13 | 2020-04-14 | Au Optronics Corporation | Display device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114422A (en) * | 2015-08-28 | 2015-12-02 | 腾志理 | Detachable expansion bolt |
| CN113137417B (en) * | 2021-04-29 | 2021-12-17 | 海宁天立金属制品有限公司 | Self-adaptive telescopic expansion screw and machining device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1447021A (en) * | 1974-01-11 | 1976-08-25 | Fischer Artur | Fastening device |
| CN2353956Y (en) * | 1998-06-12 | 1999-12-15 | 丁红娟 | Structure-improved expansion screw |
| CN2409371Y (en) * | 2000-03-09 | 2000-12-06 | 孙宗仰 | Removable and reusable expansion screws |
| CN201286763Y (en) * | 2008-11-12 | 2009-08-12 | 程添栋 | Orthopaedics cross-locking marrow nail evulsion device |
| CN202132334U (en) * | 2011-07-04 | 2012-02-01 | 翟国防 | Expansion screw |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2330446A1 (en) * | 1973-06-15 | 1975-01-09 | Maechtle Werkzeugfab Fritz | EXPANSION DOWEL AND METHOD OF ITS MANUFACTURING |
| DE10035580B4 (en) * | 2000-07-21 | 2013-07-25 | Simpson Strong-Tie Ireland Limited | Positive locking undercut anchor |
-
2011
- 2011-07-04 CN CN 201110193249 patent/CN102252019B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1447021A (en) * | 1974-01-11 | 1976-08-25 | Fischer Artur | Fastening device |
| CN2353956Y (en) * | 1998-06-12 | 1999-12-15 | 丁红娟 | Structure-improved expansion screw |
| CN2409371Y (en) * | 2000-03-09 | 2000-12-06 | 孙宗仰 | Removable and reusable expansion screws |
| CN201286763Y (en) * | 2008-11-12 | 2009-08-12 | 程添栋 | Orthopaedics cross-locking marrow nail evulsion device |
| CN202132334U (en) * | 2011-07-04 | 2012-02-01 | 翟国防 | Expansion screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10624220B2 (en) | 2018-03-13 | 2020-04-14 | Au Optronics Corporation | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102252019A (en) | 2011-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: LI PENG DONG SHUO Effective date: 20121102 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Di Xiao Inventor after: Li Peng Inventor after: Dong Shuo Inventor after: Sun Dejiang Inventor after: Di Guofang Inventor before: Di Xiao Inventor before: Sun Dejiang Inventor before: Di Guofang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHAI XIAO SUN DEJIANG ZHAI GUOFANG TO: ZHAI XIAO LI PENG DONG SHUO SUN DEJIANG ZHAI GUOFANG |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20121102 Address after: 277100 Shandong Province, Zaozhuang City Central Wantai Textile Co. Ltd. the liberation of South Branch cotton spinning workshop Applicant after: Di Guofang Applicant after: Li Peng Applicant after: Dong Shuo Address before: 277100 Shandong Province, Zaozhuang City Central Wantai Textile Co. Ltd. the liberation of South Branch cotton spinning workshop Applicant before: Di Guofang |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20160704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |