CN202132334U - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN202132334U CN202132334U CN201120243252U CN201120243252U CN202132334U CN 202132334 U CN202132334 U CN 202132334U CN 201120243252 U CN201120243252 U CN 201120243252U CN 201120243252 U CN201120243252 U CN 201120243252U CN 202132334 U CN202132334 U CN 202132334U
- Authority
- CN
- China
- Prior art keywords
- expansion
- nut
- screw mandrel
- 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 - Lifetime
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
- Dowels (AREA)
Abstract
An expansion screw comprises a middle bar, an expansion tube and a nut, wherein an expanded head is arranged on one end of the middle bar, the other end of the middle bar is in threaded connection with the nut, the expansion tube is sheathed on the middle bar and is clamped by the expanded head and the nut, one end of the expansion tube is divided into a plurality of expansion claws along the length direction, the expansion claws are wrapped on the expanded head, and the middle bar has a split structure including: the expanded head, a screw rod and a connecting lead screw, wherein threaded holes with identical thread directions are arranged on the opposite ends of the expanded head and the lead screw, and two ends of the connecting screw rod are additionally connected with the threaded holes respectively; and the screwing-in directions of the connecting screw rod, the screw rod and the nut are identical. For the expansion screw in the scheme, only the expanded head and the expansion tube are still left in a wall after the middle bar is screwed out, the screw rod protruding the wall is removed, the smoothness of the wall can be realized by easy repair, the structure is not complicated, and the cost increment is small.
Description
Technical field
The utility model relates to a kind of five metals joining work pieces, relates 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.
The model utility content
The purpose of the utility model can conveniently be dismantled king-rod the setscrew of removing after providing a kind of installation.
For realizing above-mentioned purpose, the technological scheme that the utility model 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 in the utility model; 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 utility model is done explanation further.
Description of drawings
Fig. 1 is the structural representation of the utility model.
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), and king-rod one end is for expanding drift (1), and the other end is threaded with nut (6); Expansion tube (3) is enclosed within on the king-rod and is spacing by expanding drift (1) and nut (6) clamping; Expansion tube (3) one ends prolong its length direction and are split into a plurality of expansion pawls, and the expansion pawl is wrapped in and expands on the drift (1), it is characterized in that: king-rod is for dividing body structure: 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 branch and be connected with tapped hole in addition 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 |
|---|---|---|---|
| CN201120243252U CN202132334U (en) | 2011-07-04 | 2011-07-04 | Expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120243252U CN202132334U (en) | 2011-07-04 | 2011-07-04 | Expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202132334U true CN202132334U (en) | 2012-02-01 |
Family
ID=45521102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120243252U Expired - Lifetime CN202132334U (en) | 2011-07-04 | 2011-07-04 | Expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202132334U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252019A (en) * | 2011-07-04 | 2011-11-23 | 翟国防 | Expansion screw |
| CN106015234A (en) * | 2016-08-11 | 2016-10-12 | 华文进 | Expansion screw for cement wall |
| CN112628261A (en) * | 2020-12-27 | 2021-04-09 | 冯建娟 | Expansion screw |
-
2011
- 2011-07-04 CN CN201120243252U patent/CN202132334U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252019A (en) * | 2011-07-04 | 2011-11-23 | 翟国防 | Expansion screw |
| CN102252019B (en) * | 2011-07-04 | 2012-12-26 | 翟国防 | Expansion screw |
| CN106015234A (en) * | 2016-08-11 | 2016-10-12 | 华文进 | Expansion screw for cement wall |
| CN112628261A (en) * | 2020-12-27 | 2021-04-09 | 冯建娟 | Expansion screw |
| CN112628261B (en) * | 2020-12-27 | 2022-05-17 | 嘉兴海德五金有限公司 | Expansion screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2728770C (en) | Radially expanding bolt assembly | |
| CN103967902B (en) | A kind of upset deformation type unilateral bolt fastener | |
| CN102747959A (en) | Method for fixing object and expansion bolt and special borer for method | |
| CN202132334U (en) | Expansion screw | |
| EP2065601A3 (en) | Expansion anchor | |
| CN201599289U (en) | Expansion screw with convenient disassembly | |
| CN108953329B (en) | Expansion nail | |
| CN103541982A (en) | Nested-type single-side bolt fastener | |
| CN102252019B (en) | Expansion screw | |
| CN202468600U (en) | Bolt | |
| CN201061874Y (en) | Extractor for broken-end bolt | |
| CN202149120U (en) | Expansion head bolt | |
| CN110762098A (en) | Expansion bolt with clamping block | |
| CN110762097A (en) | Expansion bolt capable of preventing screw from loosening | |
| CN202182096U (en) | Expansive-edge nut | |
| CN111911513A (en) | Bolt and nut capable of being installed quickly | |
| CN205033132U (en) | A T type long arm sleeve for fastening lead screw | |
| CN101660337B (en) | Self undercut anchor | |
| CN204450343U (en) | Adjustable wrench operating head | |
| CN104454863A (en) | Detachable expansion screw and method for loosening or tightening object through detachable expansion screw | |
| CN203973486U (en) | Aid is changed in a kind of bracing wire | |
| CN202673930U (en) | Expansion bolt | |
| CN204505046U (en) | A kind of cross like spanner of improvement | |
| CN203779402U (en) | Screw rod fastener for expansion nut | |
| CN203430944U (en) | Expansion nut and dismounting tool for dismounting expansion nut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120201 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |