CN2177117Y - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN2177117Y CN2177117Y CN 93246854 CN93246854U CN2177117Y CN 2177117 Y CN2177117 Y CN 2177117Y CN 93246854 CN93246854 CN 93246854 CN 93246854 U CN93246854 U CN 93246854U CN 2177117 Y CN2177117 Y CN 2177117Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- screw rod
- dentation
- swell fixture
- utility
- 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
- 229910052685 Curium Inorganic materials 0.000 claims description 3
- NIWWFAAXEMMFMS-UHFFFAOYSA-N curium atom Chemical compound [Cm] NIWWFAAXEMMFMS-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 241000785681 Sander vitreus Species 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Images
Landscapes
- Dowels (AREA)
Abstract
An expansion screw comprises a screw rod with a nut, a sleeve is arranged outside the screw rod, the outer surface and the inner surface of the sleeve are both in tooth shapes, and the surfaces of the screw rod and the sleeve which are matched are in corresponding tooth shapes. The utility model discloses can improve its installation fastness, simple structure moreover.
Description
The utility model relates to a kind of swell fixture that is fixed on the building wall.
Existing swell fixture is made up of the screw rod and the sleeve of band nut.The deficiency of this swell fixture is: the point of contact of sleeve and building wall causes the fastness of installation limited very little.
The purpose of this utility model provides a kind of swell fixture, and it has a plurality of points to contact with metope.
The utility model is achieved in that swell fixture, comprises a screw rod that has nut, and screw rod has a sleeve outward, and sleeve outer surface and internal surface all are dentation, is corresponding dentation on screw rod and the surface that sleeve matches.Like this, when mounted, turn nut, but the tooth of screw rod just the tooth of all sleeves of jack-up contact with building wall.
Because the utility model has a plurality of points to contact with building wall, therefore compared with the prior art, the installation fastness is big more than 2 times; In addition, compared with the prior art the utility model need not increase annex, thereby structure is still simple.
Below in conjunction with the accompanying drawing comparative examples the utility model is described in detail:
Fig. 1 is an embodiment's of the utility model a structural representation;
Fig. 2 is the unfolded drawing of Fig. 1 middle sleeve;
Fig. 3 is the A-A sectional view among Fig. 1.
Referring to Fig. 1, Fig. 2 and Fig. 3, swell fixture comprises a screw rod (2) that has nut (1).A sleeve (3) is arranged outside the screw rod (2).Sleeve (3) outer surface and internal surface all are dentation.In the present embodiment, sleeve (3) outer surface is the curium dentation, and internal surface is pointed dentation.Be corresponding pointed dentation on screw rod and the surface that sleeve matches.The number of teeth of sleeve interior surface and screw surface is 3 to 8, and present embodiment adopts 4.The number of teeth of sleeve outer surface is 3 to 15, and present embodiment adopts 7.During use, the corresponding part of sleeve (3) and screw rod (2) is inserted in the building wall eye, is turned nut (1), but then the pointed tooth of screw rod just the curium tooth of all sleeves of jack-up firmly contact with building wall.
Claims (3)
1, a kind of swell fixture comprises a screw rod that has nut, and screw rod has a sleeve outward, it is characterized in that: sleeve outer surface and internal surface all are dentation, is corresponding dentation on screw rod and the surface that sleeve matches.
2, swell fixture according to claim 1 is characterized in that: the number of teeth of sleeve interior surface and screw surface is 3 to 8; The number of teeth of sleeve outer surface is 3 to 15.
3, swell fixture according to claim 1 is characterized in that: sleeve outer surface is the curium dentation, and sleeve outer surface is pointed dentation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93246854 CN2177117Y (en) | 1993-12-10 | 1993-12-10 | Expansion screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93246854 CN2177117Y (en) | 1993-12-10 | 1993-12-10 | Expansion screw |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2177117Y true CN2177117Y (en) | 1994-09-14 |
Family
ID=33819411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 93246854 Expired - Fee Related CN2177117Y (en) | 1993-12-10 | 1993-12-10 | Expansion screw |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2177117Y (en) |
-
1993
- 1993-12-10 CN CN 93246854 patent/CN2177117Y/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN2177117Y (en) | Expansion screw | |
CN2181587Y (en) | Ornamental internal thread expanding bolt | |
CN2287681Y (en) | Double end expanding bolt | |
CN2158461Y (en) | Spiral tube type expanding bolt | |
CN2216590Y (en) | Anchoring-bolt | |
CN2149504Y (en) | Matching screw | |
CN2486805Y (en) | Pipe fastening device | |
CN2269489Y (en) | Expanding bolt | |
CN2220683Y (en) | Combined energy-saving lamp | |
CN2132859Y (en) | Detatchable expansion screw | |
CN2192757Y (en) | Anti-skid expansive bolt with internal nut | |
CN2326775Y (en) | Expansion nail | |
CN2179485Y (en) | Nut internal expanding tube screw | |
CN2378565Y (en) | Expanded pin with new structure | |
CN2271344Y (en) | Window wiper | |
CN2285602Y (en) | Cup | |
CN2268796Y (en) | Expansion pipe | |
CN2227204Y (en) | Pipe joint of engine cylinder head cover | |
CN2459892Y (en) | Base fixed type multi-stage expension fishing rod | |
CN2254595Y (en) | Connecting device for decorative lamp strip | |
CN2199351Y (en) | Special nut expansion screw | |
CN2271637Y (en) | Expansion bolt | |
CN2408292Y (en) | Integrated serial nail for nail gun | |
CN2209704Y (en) | High-strength screw bolt | |
CN2204350Y (en) | Double-direction expantion bolt |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |