CN202789942U - Inversion type expansion screw - Google Patents
Inversion type expansion screw Download PDFInfo
- Publication number
- CN202789942U CN202789942U CN 201220039715 CN201220039715U CN202789942U CN 202789942 U CN202789942 U CN 202789942U CN 201220039715 CN201220039715 CN 201220039715 CN 201220039715 U CN201220039715 U CN 201220039715U CN 202789942 U CN202789942 U CN 202789942U
- Authority
- CN
- China
- Prior art keywords
- nut
- screw
- lead screw
- screw rod
- fixed
- 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
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model relates to an inversion type expansion screw. A current expansion screw is characterized in that, a screw cap and a screw rod are fixed into one integration, the screw rod goes through an expansion pipe and is fixed by a nut via rotation, technology processes are complex; the screw rod and the nut are exposed outside, rust and corrosion easily happen, safety is not facilitated, and no beauty is provided. The utility model aims at the insufficiencies, and provides an inversion type expansion screw, one end of the screw rod and the nut are fixed to be an integral body, one end, which is opposite to the end with the nut, of the screw rod goes through the internal of the expansion pipe and is correspondingly disposed in the screw cap, and the screw rod and the screw cap rotate to make the screw rod be fixed in the expansion pipe. Influence of external environment upon a combination member is effectively prevented, and the inversion type expansion screw is advantaged by oxidation and corrosion resistance, easy dismounting, and prolonging of service lifetime.
Description
Technical field
The utility model relates to a kind of five metals and connects workpiece, relates in particular to a kind of upside-down setscrew.
Background technique
Setscrew is fixedly to be to utilize the wedge shape gradient to impel expansion to produce the friction bond stress, reaches fixed effect. existing setscrew is that nut and lead screw are fixed as one, and one of lead screw is screw thread, and one has tapering.Outer bread one iron sheet (having plenty of steel pipe), half has some otch iron sheet cylinder (steel pipe), they are filled in the hole of accomplishing fluently on the wall together, then split nut, nut pulls outward lead screw, and tapering is drawn in the iron sheet cylinder, and the iron sheet cylinder is by spreading, so tightly fixing on the wall, generally be used for fastening on the materials such as cement, brick such as protective grating, rain cover, air-conditioning.Process is complicated; Lead screw and the nut Naked easy corrosion that exposes outside is unfavorable for safety; Its lead screw that installs rear Naked dew is not attractive in appearance.
Summary of the invention
The utility model provides a kind of construction that is beneficial to for not stating deficiency, and is easy and simple to handle, safe a kind of upside-down setscrew attractive in appearance, and for achieving the above object, the utility model adopts following technology to realize:
A kind of upside-down setscrew comprises expansion tube, and an end and the nut of lead screw are fixed as an integral body, and the bar that its lead screw arranges the opposite end of nut passes correspondence from expansion tube inside and places in the nut, and lead screw and cap rotation are fixed in the expansion tube.
For better effect: lead screw the opposite end that nut is set with spring washer and packing ring are set respectively between expansion tube contacts.
Lead screw arranges screw thread at the opposite extreme direction that nut is set.
Lead screw is coincide at the opposite end external diameter that nut is set and nut internal diameter, and lead screw arranges the sense of rotation of screw thread and the flight of nut matches at the opposite extreme direction that nut is set.
[0007]Following improvement brings following advantage: the lead screw that will expose and nut are fixed as an integral body, its the other end lead screw and cap rotation are fixed in to be hidden in the expansion tube, can effectively avoid external environment on the impact of compostle member, and resistance to oxidation is corrosion-resistant, be convenient to dismounting, increase its working life; And can increase landscaping effect; Reduce construction sequence, directly lead screw is fixed by expansion tube and cap rotation, be beneficial to the construction and installation dismounting.
Lead screw one end that nut is set with spring washer is set respectively between expansion tube contacts and prevents vibrations, packing ring increases lifting surface area.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the utility model structural representation.
Embodiment
Lead screw 1 one ends and nut 6 are fixed as an integral body, and the bar that its lead screw 1 arranges the opposite end of nut 6 passes correspondence from expansion tube 4 inside and places in the nut 5, and lead screw 1 is fixed in the expansion tube 4 lead screw 1 with nut 5 rotations.Lead screw 1 the opposite end that nut 6 is set with spring washer 2 and packing ring 3 are set respectively between expansion tube 4 contacts.Lead screw 1 is coincide establishing its external diameter and nut 5 internal diameters, and lead screw 1 arranges the sense of rotation of screw thread and the flight of nut 5 matches at the opposite extreme direction that nut 6 is set.
Claims (4)
1. upside-down setscrew, comprise expansion tube (4), it is characterized in that: an end of lead screw (1) and nut (6) are fixed as an integral body, the bar that its lead screw (1) arranges the opposite end of nut (6) passes correspondence from expansion tube (4) inside and places in the nut (5), and lead screw (1) is fixed in the expansion tube (4) with nut (5) rotation.
2. a kind of upside-down setscrew as claimed in claim 1 is characterized in that: lead screw (1) the opposite end that nut (6) is set with spring washer (2) and packing ring (3) are set respectively between expansion tube (4) contacts.
3. a kind of upside-down setscrew as claimed in claim 1, it is characterized in that: lead screw (1) arranges screw thread at the opposite extreme direction that nut (6) is set.
4. such as claim 1 or 3 described a kind of upside-down setscrews, it is characterized in that: lead screw (1) is coincide at the opposite end external diameter that nut (6) is set and nut (5) internal diameter, and lead screw (1) arranges the sense of rotation of screw thread and the flight of nut (5) matches at the opposite extreme direction that nut (6) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220039715 CN202789942U (en) | 2012-02-08 | 2012-02-08 | Inversion type expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220039715 CN202789942U (en) | 2012-02-08 | 2012-02-08 | Inversion type expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789942U true CN202789942U (en) | 2013-03-13 |
Family
ID=47817208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220039715 Expired - Fee Related CN202789942U (en) | 2012-02-08 | 2012-02-08 | Inversion type expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789942U (en) |
-
2012
- 2012-02-08 CN CN 201220039715 patent/CN202789942U/en not_active Expired - Fee Related
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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: 20130313 Termination date: 20140208 |