CN86204652U - Improved expansion nut - Google Patents
Improved expansion nut Download PDFInfo
- Publication number
- CN86204652U CN86204652U CN 86204652 CN86204652U CN86204652U CN 86204652 U CN86204652 U CN 86204652U CN 86204652 CN86204652 CN 86204652 CN 86204652 U CN86204652 U CN 86204652U CN 86204652 U CN86204652 U CN 86204652U
- Authority
- CN
- China
- Prior art keywords
- hole
- tightness
- expansion nut
- improved expansion
- 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 - Lifetime
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Abstract
The utility model discloses an improved expansion nut. The improved expansion nut belongs to a tightness fixed-connecting piece which makes the object to be fixed on the building. The improved expansion nut comprises an elastic cylindrical shell body, a tightness body having taper and a compacting body. The middle of the tightness body is provided with a pervious screw hole, and the middle of the compacting body is provided with a through hole. While in use, the compacting body is positioned in the inner of the base hole of the building, and a relevant screw bolt passing through the compacting body is screwed in the screw hole of the tightness body; so after the screw hole is screwed, the expansive force is generated on the circumferential wall of the elastic cylindrical shell body, and the connecting piece can be fixed and tightened. The utility model has simple structure, easy production, homogeneous expansive force and tautness improving.
Description
The utility model is a kind of novel expanding nut, and it belongs to object is fixed on a class fastening connection piece on the building.
At present the elastic shell split by fastening body, fastener and two slit bamboo or chopped woods of the expanding nut that uses and fixedly five parts such as holddown spring of elastic shell form.Its part complex-shaped must do material die casting with more valuable non-ferrous alloy and form.And the expansion fastening force that it produces in fastened body is skewness along the circumferential direction, influences fastening strength.
Task of the present utility model is the deficiency that overcomes above-mentioned expanding nut, has designed a kind of new structure shape, has reduced the quantity of part, has enlarged the material using scope, has reduced cost and has been convenient to and made.
The utility model is made up of resilient cylindrical housing, fastening body and three parts of fastener.Two of elastic cylinder housing has the elastic groove of many mutual dislocation.And inboard, two ends, hole respectively is equipped with the protruding rafter of certain taper within it; Fastener is the cone that a top has bulge loop, and there is the screw of a break-through centre; Fastening body also is the cone that a top has bulge loop, has the through hole that a bolt that can match for the screw with fastener passes in the middle of it, and connects a suitable cylindrical body at its cone base, and the tapering of fastening body and fastener is between 15～30.
Accompanying drawing is a structural representation of the present utility model:
(1) is fastener among the figure, and (2) are the resilient cylindrical housing, and (3) are fastening body.
When the utility model uses, fastener (1) is pressed into an end of elastic cylinder housing (2), fastening body (3) is pressed into the other end of elastic cylinder housing (2), and the protruding rafter that relies on its elasticity and two ends blocks the bulge loop on (1) and (3) top and becomes one.Then this expanding nut is put into the hole, basis (as the fixing wall of wall lamp) of fastened fixture, the through hole that passes fastening body (3) with corresponding bolts is screwed in the screw of fastener (1), along with bolt is tightened, then fastener (1) and fastening body (3) are pressed in the elastic cylinder housing (2) vertically gradually, force the two ends of (2) to be expanded by warp direction equably.On the basic hole wall of fastened thing, produce expansive force, reach it and be fastened on purpose in the basic hole.
Elastic shell of the present utility model has adopted the cylindrical integral structure, prevents torsion phenomenon in use, and is simultaneously even along the expansive force that produces on its circumference, improved firmness. Because the cylindrical effect of fastening body (3) bottom, make elastic shell deeper in the buried foundation hole, move in the expansive force point of aperture. In the time of in expansion nut is fastened on basic hole, avoided basic hole surface to produce protuberance or peeling phenomenon.
Claims (2)
1, a kind of expanding nut of being made up of elastic shell, fastener and fastening body is characterized in that:
A, elastic shell are cylindrical bodys that has a plurality of mutual dislocation elastic grooves at its two, and respectively there is the protruding rafter of a band certain taper at the two ends, hole within it,
B, fastening body and fastener are cone, and conicity is between 15 °～30 °.
2, fastening body as claimed in claim 1 is characterized in that having in its cone bottom the cylindrical body of one section suitable length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86204652 CN86204652U (en) | 1986-09-22 | 1986-09-22 | Improved expansion nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86204652 CN86204652U (en) | 1986-09-22 | 1986-09-22 | Improved expansion nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86204652U true CN86204652U (en) | 1987-08-19 |
Family
ID=4807670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86204652 Expired - Lifetime CN86204652U (en) | 1986-09-22 | 1986-09-22 | Improved expansion nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86204652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372731C (en) * | 2004-03-29 | 2008-03-05 | 株式会社岛野 | Electric bicycle shift control device |
-
1986
- 1986-09-22 CN CN 86204652 patent/CN86204652U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372731C (en) * | 2004-03-29 | 2008-03-05 | 株式会社岛野 | Electric bicycle shift control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |