CN103851049A - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN103851049A CN103851049A CN201210503952.6A CN201210503952A CN103851049A CN 103851049 A CN103851049 A CN 103851049A CN 201210503952 A CN201210503952 A CN 201210503952A CN 103851049 A CN103851049 A CN 103851049A
- Authority
- CN
- China
- Prior art keywords
- bolt
- swollen cylinder
- cylinder
- expansion cylinder
- undercut groove
- 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.)
- Pending
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- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses an expansion bolt comprising a bolt, a nut, a spring gasket and a flat gasket, wherein external threads are formed on the upper part of the bolt, and a tail cone with a taper is arranged on the lower end of the bolt. The expansion bolt comprises an upper expansion cylinder, a middle tapered block, a middle separator and a lower expansion cylinder, wherein at least two cut grooves I are formed on the lower part of the upper expansion cylinder, at least two cut grooves II are formed on the lower part of the lower expansion cylinder, the middle tapered block is a tapered block which is small in top and big in bottom and provided with a circular hole in the middle part thereof, the middle separator is a gasket which is polygonal and provided with a circular hole in the middle part thereof, the lower expansion cylinder, the middle separator, the middle tapered block, the upper expansion cylinder, the flat gasket, the spring gasket and the nut are orderly mounted in the bolt from bottom to top, one end, where the cut grooves I are formed, of the upper expansion cylinder is downward, and in the meantime, one end, where the cut grooves II are formed, of the lower expansion cylinder is downward. The expansion bolt is firm in connection, accurate in positioning, simple in structure and long in service life.
Description
Technical field
The present invention relates to fastening piece, specifically a kind of EXPANSION ANCHOR BOLTS.
Background technique
Existing EXPANSION ANCHOR BOLTS is made up of bolt, nut, spring washer, plain washer and swollen cylinder, this structure, in the time that EXPANSION ANCHOR BOLTS is installed, bolt is difficult for location, easily produce crooked phenomenon, the crooked stress that can produce when stressed of bolt is concentrated, and after fastening nut, occurs sometimes the problem of bolt looseness, it is not firm to connect, and has potential safety hazard.
Summary of the invention
Object of the present invention is just to provide and is a kind ofly connected firmly, the EXPANSION ANCHOR BOLTS of accurate positioning, simple in structure, long service life.
For achieving the above object, the present invention includes bolt, nut, spring washer and plain washer, the top of described bolt is provided with outside thread, the lower end of described bolt is provided with the tail cone with tapering, also comprise swollen cylinder, middle cone piece, intermediate clapboard and lower swollen cylinder, the bottom of described swollen cylinder is provided with at least two undercut groove I, the bottom of described lower swollen cylinder is provided with at least two undercut groove II, described middle cone piece is up-small and down-big, round-meshed circular cone is established in centre, described intermediate clapboard is that peripheral shape is polygonal, the pad of Intermediate Gray circular hole, described lower swollen cylinder, intermediate clapboard, middle cone piece, upper swollen cylinder, plain washer, spring washer and nut are loaded in bolt successively from bottom to top, and make one end that swollen cylinder is provided with undercut groove I down, simultaneously, should make one end that lower swollen cylinder is provided with undercut groove II down.
The present invention is owing to adopting upper swollen cylinder and lower swollen cylinder, the bottom of upper swollen cylinder is provided with at least two undercut groove I, the bottom of lower swollen cylinder is provided with at least two undercut groove II, and be placed with middle cone piece and intermediate clapboard between upper swollen cylinder and lower swollen cylinder, middle cone piece is up-small and down-big, round-meshed circular cone is established in centre, intermediate clapboard is that peripheral shape is polygonal, the pad of Intermediate Gray circular hole, like this, in the time that EXPANSION ANCHOR BOLTS is installed, intermediate clapboard can be stuck in the hole that EXPANSION ANCHOR BOLTS is installed, can accurately locate EXPANSION ANCHOR BOLTS, and in the time of fastening nut, EXPANSION ANCHOR BOLTS forms two sections of expansions in upper swollen cylinder and lower swollen cylinder, thereby it is more firm that EXPANSION ANCHOR BOLTS is connected.The present invention is connected firmly, and accurate positioning is simple in structure, long service life.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Referring to Fig. 1, the present invention includes bolt 1, nut 2, spring washer 3 and plain washer 4, the top of described bolt 1 is provided with outside thread 11, the lower end of described bolt 1 is provided with the tail cone 12 with tapering, also comprise swollen cylinder 5, middle cone piece 6, intermediate clapboard 7 and lower swollen cylinder 8, the bottom of described swollen cylinder 5 is provided with at least two undercut groove I51, the bottom of described lower swollen cylinder 8 is provided with at least two undercut groove II81, described middle cone piece 6 is up-small and down-big, round-meshed circular cone is established in centre, described intermediate clapboard 7 for peripheral shape be polygonal, the pad of Intermediate Gray circular hole, described lower swollen cylinder 8, intermediate clapboard 7, middle cone piece 6, upper swollen cylinder 5, plain washer 4, spring washer 3 and nut 2 are loaded in bolt 1 successively from bottom to top, and make one end that swollen cylinder 5 is provided with undercut groove I51 down, simultaneously, should make one end that lower swollen cylinder 8 is provided with undercut groove II81 down.
Claims (1)
1. an EXPANSION ANCHOR BOLTS, comprises bolt (1), nut (2), spring washer (3) and plain washer (4), the top of described bolt (1) is provided with outside thread (11), and the lower end of described bolt (1) is provided with the tail cone (12) with tapering, it is characterized in that: also comprise swollen cylinder (5), middle cone piece (6), intermediate clapboard (7) and lower swollen cylinder (8), the bottom of described swollen cylinder (5) is provided with at least two undercut groove I(51), the bottom of described lower swollen cylinder (8) is provided with at least two undercut groove II(81), described middle cone piece (6) is up-small and down-big, round-meshed circular cone is established in centre, described intermediate clapboard (7) for peripheral shape be polygonal, the pad of Intermediate Gray circular hole, described lower swollen cylinder (8), intermediate clapboard (7), middle cone piece (6), upper swollen cylinder (5), plain washer (4), spring washer (3) and nut (2) are loaded in bolt (1) successively from bottom to top, and make swollen cylinder (5) be provided with undercut groove I(51) one end down, meanwhile, should make lower swollen cylinder (8) be provided with undercut groove II(81) one end down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210503952.6A CN103851049A (en) | 2012-12-02 | 2012-12-02 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210503952.6A CN103851049A (en) | 2012-12-02 | 2012-12-02 | Expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851049A true CN103851049A (en) | 2014-06-11 |
Family
ID=50859076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210503952.6A Pending CN103851049A (en) | 2012-12-02 | 2012-12-02 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851049A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350736A (en) * | 2020-03-10 | 2020-06-30 | 嘉兴萨雷特汽车零部件有限公司 | Fastening bolt with good anti-loosening performance for motorcycle |
| CN113802473A (en) * | 2020-06-17 | 2021-12-17 | 檀国大学校产学协力团 | Anchor rod comprising a plurality of expansion sleeves |
-
2012
- 2012-12-02 CN CN201210503952.6A patent/CN103851049A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350736A (en) * | 2020-03-10 | 2020-06-30 | 嘉兴萨雷特汽车零部件有限公司 | Fastening bolt with good anti-loosening performance for motorcycle |
| CN113802473A (en) * | 2020-06-17 | 2021-12-17 | 檀国大学校产学协力团 | Anchor rod comprising a plurality of expansion sleeves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |