CN212202760U - Anti-corrosion expansion bolt - Google Patents
Anti-corrosion expansion bolt Download PDFInfo
- Publication number
- CN212202760U CN212202760U CN202020350691.9U CN202020350691U CN212202760U CN 212202760 U CN212202760 U CN 212202760U CN 202020350691 U CN202020350691 U CN 202020350691U CN 212202760 U CN212202760 U CN 212202760U
- Authority
- CN
- China
- Prior art keywords
- bolt
- circular recess
- nut
- countersunk head
- lower extreme
- 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.)
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Abstract
The utility model discloses an anticorrosion expansion bolts, including countersunk head bolt, expand tube, plain washer, spring pad and hexagon nut, the circular recess has been seted up along the circumference to the plain washer, and circular recess inboard is equipped with the internal thread, and countersunk head bolt revolves a terminal cover of twisting hexagonal nut soon and is equipped with the bolt cap, and the lower extreme side of bolt cap be equipped with the inboard internal thread assorted external screw thread of circular recess, the lower extreme of bolt cap revolves soon into in the circular recess. The utility model discloses an in the lower extreme of bolt cap revolves soon and twists into circular recess, cover countersunk head bolt and hexagon nut, avoided the rainwater to the corrosion of countersunk head bolt and hexagon nut and the rust corrosion that leads to, guaranteed the intensity reduction of bolt and nut, and then guaranteed the fastening degree between expansion bolts and the installed part, simultaneously for the nut can be taken off convenient and fast from the bolt fast.
Description
Technical Field
The utility model belongs to the fastener field, concretely relates to anticorrosion expansion bolts.
Background
The existing expansion bolt consists of a bolt, a nut, a spring washer, a flat washer and an expansion cylinder, after the expansion bolt is fastened and installed with an installation part, the bolt and the nut can be exposed outside, after the air and rain are blown for a long time, the bolt, the nut and the joint can rust and corrode (particularly in the heavy area of some rainwater and moisture), the nut is difficult to take down from the bolt, meanwhile, the strength of the bolt and the nut is reduced, and the tightness between the expansion bolt and the installation part is reduced.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art existence, the utility model provides an anticorrosion expansion bolts.
The utility model discloses a realize through following technical scheme: the utility model provides an anticorrosion expansion bolts, includes countersunk head bolt, expand tube, plain washer, spring pad and hexagon nut, circular recess has been seted up along the circumference to the plain washer, the circular recess inboard is equipped with the internal thread, countersunk head bolt revolves soon to have hexagon nut's an end cover is equipped with the bolt cap, the lower extreme side of bolt cap be equipped with the inboard internal thread assorted external screw thread of circular recess, the lower extreme of bolt cap revolves soon to advance in the circular recess.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a lower extreme of bolt cap is twisted soon and is reached the fastening to the bolt cap in advancing circular recess, covers countersunk head bolt and hexagon nut, has avoided the rainwater to the corrosion of countersunk head bolt and hexagon nut and the rust corrosion that leads to, has guaranteed the intensity reduction of bolt and nut, and then has guaranteed the fastening degree between expansion bolts and the installed part, simultaneously for the nut can be taken off from the bolt fast, convenient and fast.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic top view of the expansion bolt of the present invention.
In the drawings: 1. a countersunk bolt; 2. expanding the tube; 3. a flat washer; 4. a spring pad; 5. a hexagonal nut; 6. a circular groove; 7. a bolt cap.
Detailed Description
As shown in fig. 1 to 2 of the drawings of the specification, the anti-corrosion expansion bolt comprises a countersunk bolt 1, an expansion pipe 2, a flat washer 3, a spring pad 4 and a hexagon nut 5, wherein the flat washer 3 is circumferentially provided with a circular groove 6, inner threads are arranged on the inner side of the circular groove 6, one end of the countersunk bolt 1 screwed with the hexagon nut 5 is covered with a bolt cap 7, the side surface of the lower end of the bolt cap 7 is provided with external threads matched with the inner threads of the circular groove 6, and the lower end of the bolt cap 7 is screwed into the circular groove 6.
The utility model discloses twist into the circular recess of plain washer with the bolt cap after installing expansion bolts in (the thickness of plain washer can be selected by technical personnel in the field, guarantee its thickness and be enough to set up the circular recess of certain degree of depth), cover countersunk head bolt and hexagon nut, avoid the rainwater to the corrosion of countersunk head bolt and hexagon nut and the rust corrosion that leads to, the intensity of bolt and nut has been guaranteed, and then the tightness between expansion bolts and the installed part has been guaranteed, when the nut is taken off to needs, can in the circular recess of screwing out the plain washer with the bolt cap.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications of the shapes, structures, features and spirit described in the claims of the present invention should be included in the scope of the present invention.
Claims (1)
1. The utility model provides an anticorrosion expansion bolts, includes countersunk head bolt (1), expand tube (2), plain washer (3), spring pad (4) and hexagon nut (5), its characterized in that: circular recess (6) have been seted up along the circumference in plain washer (3), circular recess (6) inboard is equipped with the internal thread, countersunk head bolt (1) is twisted soon to have the end cover of hexagon nut (5) is equipped with bolt cap (7), the lower extreme side of bolt cap (7) be equipped with the inboard internal thread assorted external screw thread of circular recess (6), the lower extreme of bolt cap (7) is twisted soon and is advanced in circular recess (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020350691.9U CN212202760U (en) | 2020-03-19 | 2020-03-19 | Anti-corrosion expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020350691.9U CN212202760U (en) | 2020-03-19 | 2020-03-19 | Anti-corrosion expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212202760U true CN212202760U (en) | 2020-12-22 |
Family
ID=73822225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020350691.9U Active CN212202760U (en) | 2020-03-19 | 2020-03-19 | Anti-corrosion expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212202760U (en) |
-
2020
- 2020-03-19 CN CN202020350691.9U patent/CN212202760U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |