CN201050527Y - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN201050527Y CN201050527Y CNU2007200402414U CN200720040241U CN201050527Y CN 201050527 Y CN201050527 Y CN 201050527Y CN U2007200402414 U CNU2007200402414 U CN U2007200402414U CN 200720040241 U CN200720040241 U CN 200720040241U CN 201050527 Y CN201050527 Y CN 201050527Y
- Authority
- CN
- China
- Prior art keywords
- expansion
- sleeve
- cone
- screw
- screw 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
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses an expansion screw, which a cone head screw, an expansion bushing, and a nut. A strip slot is arranged on the pipe wall of the lower end of the expansion busing, the expansion busing is sleeved on the outside of the cone head screw, a nut is screwed on the bottom end of the screw rod, a cone sleeve corresponding to the head of the cone head screw is sleeved on the cone head screw. A slot is arranged on the wall of the pipe on one side of the bottom of the cone sleeve, and the head of the taper sleeve extends into the expansion bushing. When the expansion screw is in use, the cone head screw withdraws along with the pull force produced by the nut, the cone head part of the screw presses the cone sleeve first, and then the cone sleeve presses the expansion bushing; since the self-body of the taper sleeve is expanded, the diameter of the raised part of the expansion bushing which is caused by press is bigger. For the hole in the wall with bigger aperture, the utility model can perform better fastening effect still. The purpose of double-fastening is achieved since the two expansion components of the taper sleeve and the expansion bushing are adopted. More taper sleeves can be adopted when reinforcing the fastening effect is needed.
Description
One, technical field
The utility model relates to a kind of fastening piece, a kind of specifically setscrew.
Two, background technique
Setscrew is a kind of conventional fasteners, its predominant use is at building walls or roof anchorage article, existing setscrew mainly comprises conehead screw rod, expansion sleeve and nut three parts, during use on the conehead screw jacket expansion sleeve, be inserted into again and bore in the good hole on the building walls in advance, then put fastener, screw nut then so that the conehead screw retracts, rely on the tube wall of the conical nose extrusion expansion sleeve pipe of screw rod that it is expanded, the tube wall of expansion utilize the frictional force jam-pack in the hole to reach fastening purpose.The prerequisite of using setscrew is the hole that gets out earlier respective diameters on wall, because operator's proficient differs or bit bounce increases in the work because the wearing and tearing of drill bit cause, the overproof situation of wall hole dia often appears, at this moment use existing setscrew, because of the diameter that expansion sleeve increases limited, possibly can't reach effectively fastening purpose, easily produce potential safety hazard, run into this situation, the general practice is redrilling or fills in packing to reduce the aperture in foramen primum, but two kinds of processing modes are not only time-consuming bothersome, and poor reliability.
Three, summary of the invention
1, goal of the invention: the purpose of this utility model provide a kind of under the wall hole dia exists than the situation of mistake, still can guarantee effectively fastening, and the higher setscrew of fastening back intensity.
2, technological scheme: a kind of setscrew described in the utility model, it comprises conehead screw rod, expansion sleeve and nut, the tube wall of described expansion sleeve lower end is provided with the bar shaped fluting, expansion sleeve is enclosed within conehead screw rod outside, nut is spun on the bottom of screw rod, it is characterized in that: also be with the tapered sleeve corresponding with its head on the conehead screw rod, the tube wall of tapered sleeve bottom one side is provided with fluting, and its top is stretched in the expansion sleeve.
The principle of this setscrew is: the conical nose at the conehead screw rod is with the tapered sleeve corresponding with it, a side adjacent with conical nose on this tapered sleeve is provided with fluting, insert this setscrew in the wall hole and screw nut, pulling force along with the nut generation, the conehead screw retracts, its conical nose at first pushes tapered sleeve, tapered sleeve begins to expand and fill up the wall hole gradually, continuation retraction along with the conehead screw rod, the tube wall of the interior also extrusion expansion sleeve pipe of expansion sleeve is goed deep into so that its expansion in the top of tapered sleeve, because tapered sleeve itself expands, so it makes the expansion effect of sleeve pipe more remarkable, be that expansion sleeve is bigger because of the diameter of extruding bump, so for wall hole bigger than normal, aperture, it still can reach good fastening effect, in addition, because this setscrew has utilized tapered sleeve and two kinds of expansion elements of expansion sleeve, two kinds of expansion element actings in conjunction have reached dual fastening purpose.
Fluting on the described tapered sleeve is symmetrical arranged, and its expansion effect is better.Tapered sleeve not only can use one, also can use one group of a plurality of order to be enclosed within on the conehead screw rod in order to strengthen fastening effect.
3, beneficial effect:
Decoration described in the utility model prevents that unloading setscrew has the following advantages: 1) by the head at the conehead screw rod tapered sleeve is set, the tube wall of the adjacent side with the conehead screw head of this tapered sleeve (i.e. bottom) is provided with fluting, opposite side (being the top) stretches into when using this setscrew in the expansion sleeve, pulling force along with the nut generation, the conehead screw retracts, the conical nose of screw rod at first pushes tapered sleeve, utilize tapered sleeve extrusion expansion sleeve pipe again, because tapered sleeve itself expands, so it makes expansion sleeve bigger because of the diameter of extruding bump, so for wall hole bigger than normal, aperture, it still can reach good fastening effect; (2) owing to utilized tapered sleeve and two kinds of expansion elements of expansion sleeve, these two kinds of expansion element actings in conjunction have reached dual fastening purpose; (3) when needs strengthen fastening effect, can use a plurality of tapered sleeves to be enclosed within proper order on the conehead screw rod.
Four, description of drawings
Fig. 1 is a structural representation of the present utility model.
Five, embodiment
As shown in Figure 1, a kind of setscrew described in the utility model, it comprises conehead screw rod 1, expansion sleeve 2, nut 3, tapered sleeve 5, pad 7 and spring pad 8, the tube wall of expansion sleeve 2 lower ends is provided with bar shaped fluting 4, expansion sleeve 2 is enclosed within conehead screw rod 1 outside, tapered sleeve 5 is enclosed between conehead screw rod 1 head and the expansion sleeve 2, its shape is corresponding with the conical nose of screw rod 1, be symmetrically distributed with fluting 6 on the tube wall of tapered sleeve 5 bottoms one side, its top is stretched in the expansion sleeve 2, and nut 3 is spun on the bottom of screw rod 1 by pad 7 and spring pad 8.In order to strengthen fastening effect, also a plurality of tapered sleeves can be enclosed within on the conehead screw rod in proper order.
Conical nose at conehead screw rod 1 is with the tapered sleeve corresponding with it 5, a side adjacent with conical nose is provided with fluting 6 on this tapered sleeve 5, insert this setscrew in the wall hole and screw nut 3, pulling force along with nut 3 generations, conehead screw rod 1 retraction, its conical nose at first pushes tapered sleeve 5, tapered sleeve 5 expands and fills up the wall hole gradually, continuation retraction along with conehead screw rod 1, the tube wall of expansion sleeve 2 interior also extrusion expansion sleeve pipes 2 is goed deep into so that its expansion in the top of tapered sleeve 5, because tapered sleeve 5 itself expands, so it makes the expansion effect of sleeve pipe 2 more remarkable, be that expansion sleeve 2 is bigger because of the diameter of extruding bump, so for wall hole bigger than normal, aperture, it still can reach good fastening effect, in addition, because this setscrew has utilized tapered sleeve 5 and 2 two kinds of expansion elements of expansion sleeve, two kinds of expansion element actings in conjunction, has reached dual fastening purpose.
Claims (3)
1. setscrew, it comprises conehead screw rod (1), expansion sleeve (2) and nut (3), the tube wall of described expansion sleeve (2) lower end is provided with bar shaped fluting (4), expansion sleeve (2) is enclosed within conehead screw rod (1) outside, nut (3) is spun on the bottom of screw rod (1), it is characterized in that: also be with the tapered sleeve corresponding with its head (5) on conehead screw rod (1), the tube wall of tapered sleeve (5) bottom one side is provided with fluting (6), and its top is stretched in the expansion sleeve (2).
2. setscrew according to claim 1 is characterized in that: the fluting (6) on the described tapered sleeve (5) is symmetrically distributed on the tube wall of tapered sleeve (5).
3. setscrew according to claim 1 and 2 is characterized in that: described one group of tapered sleeve (5) order is enclosed within on the conehead screw rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200402414U CN201050527Y (en) | 2007-06-29 | 2007-06-29 | Expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200402414U CN201050527Y (en) | 2007-06-29 | 2007-06-29 | Expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050527Y true CN201050527Y (en) | 2008-04-23 |
Family
ID=39337014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200402414U Expired - Fee Related CN201050527Y (en) | 2007-06-29 | 2007-06-29 | Expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050527Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011050653A1 (en) * | 2009-10-28 | 2011-05-05 | 福建鹏坤实业有限公司 | Anchor bolt for sheet material |
| CN107355458A (en) * | 2017-07-06 | 2017-11-17 | 海盐县通顺标准件厂 | A kind of modified form setscrew |
-
2007
- 2007-06-29 CN CNU2007200402414U patent/CN201050527Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011050653A1 (en) * | 2009-10-28 | 2011-05-05 | 福建鹏坤实业有限公司 | Anchor bolt for sheet material |
| CN107355458A (en) * | 2017-07-06 | 2017-11-17 | 海盐县通顺标准件厂 | A kind of modified form setscrew |
| CN107355458B (en) * | 2017-07-06 | 2022-11-25 | 海盐县通顺标准件厂 | Improved expansion screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY147466A (en) | An improved sleeve anchor | |
| CN201027743Y (en) | Double-point expanding screw bolt | |
| CN201261178Y (en) | Bush drawing device | |
| CN201050527Y (en) | Expansion screw | |
| CN209990751U (en) | Novel expansion bolt | |
| CN101384827B (en) | Gun rivet | |
| CN205136291U (en) | Rivet | |
| CN207212873U (en) | A kind of setscrew for being easy to remove | |
| CN203784049U (en) | Locking type expansion bolt | |
| CN210196229U (en) | Rivet fastener | |
| CN102278345A (en) | Expansion-type tension rivet | |
| CN106584361A (en) | Internal expanding type butt-joint pipe broken wire splitter | |
| CN202768573U (en) | Self-drilling expansion screw | |
| CN210336460U (en) | Multifunctional drill bit assembly | |
| CN210371519U (en) | Two-in-one conjoined fast-assembling connecting rod for furniture | |
| CN208885719U (en) | A kind of triangle telescopic rod | |
| CN212337840U (en) | Convenient expansion screw who dismantles | |
| CN212337835U (en) | Self-tapping expansion screw | |
| CN201269239Y (en) | Dismountable expansion type fixer | |
| CN202065299U (en) | Pull-bursting type ceiling and pendant screw | |
| CN200978858Y (en) | Nailing-in type expansion bolt | |
| CN206754092U (en) | A kind of rapid expanding nail | |
| CN206035979U (en) | Expansion bolt | |
| CN202125496U (en) | Energy saving self-attack conical head expansion bolt | |
| CN215908207U (en) | Tensile drawing back bottom expanding mechanical anchor bolt |
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: 20080423 Termination date: 20130629 |