CN2527771Y - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN2527771Y CN2527771Y CN 02212711 CN02212711U CN2527771Y CN 2527771 Y CN2527771 Y CN 2527771Y CN 02212711 CN02212711 CN 02212711 CN 02212711 U CN02212711 U CN 02212711U CN 2527771 Y CN2527771 Y CN 2527771Y
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- coupling sleeve
- utility
- model
- 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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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model provides a plug bolt which comprises a screw with a tapered end, an expanded coupling sleeve sleeved on the screw and a nut; wherein an axial expanded slot is arranged on the expanded coupling sleeve and close to the screw tapered end. The utility model is characterized in that a retaining head is arranged at the bottom of the thread section of the screw; the taper of the inside of the expanded coupling sleeve is the same as that of the screw while the expanded coupling sleeve is thickened from the end and the inside diameter is slightly smaller than the diameter of the screw tapered end. When the utility model is installed, the thread at the screw end is not be damaged if the retaining head at the bottom of the screw is stroke; therefore the utility model is resistant to shock and is easy for repeated use and the retaining head is clamped when the bolt is fastened or dismounted to prevent the screw from moving along with the nut for easy operation; and because the inside taper of the expanded coupling sleeve is the same as the screw taper, the expanded coupling sleeve is thickened from the end and has small size, the contact area of the expanded coupling sleeve and the screw is enlarged. The utility model has reasonable and novel structure and excellent self-locking property.
Description
Technical field
The utility model provides a kind of EXPANSION ANCHOR BOLTS, belongs to the swell fixture technical field.
Background technique
Present EXPANSION ANCHOR BOLTS, generally include screw rod that an end is a tapering, be sleeved on swelling cover and nut on the screw rod, knock the end of screw rod, after hammering into EXPANSION ANCHOR BOLTS within the walls, the other end at screw rod screws on nut, prevent that by nut the swelling cover from coming off downwards, and the taper ends of screw rod and the swelling of swelling cover, and then fix screw rod.Defective is: damage the screw thread on the screw rod during end of knocking screw rod easily, make nut scyewed joint with it, and be difficult for clamping during dismounting, screw rod is easily along with activity during fastening nut; Be that swelling cover internal diameter is unanimous between the higher and lower levels again, little with screw rod tapering end locking area, self-locking property needs further improvement.
Summary of the invention
When providing a kind of screw thread that can overcome above-mentioned defective, can not damage the screw rod end when installing, dismounting, the purpose of this utility model is convenient to clamping, the good EXPANSION ANCHOR BOLTS of self-locking property.
Comprise an end be tapering screw rod, be sleeved on swelling cover and nut on the screw rod, wherein the swelling cover is provided with axial distending seam near screw rod tapering end, it is characterized in that: screw flight section end is provided with dop, the inboard threaded tapering of tapering of swelling cover, and the swelling cover is thickeied gradually from the end, and its internal diameter is slightly less than screw rod tapering end diameter.
Described EXPANSION ANCHOR BOLTS, dop cross section are polygonals such as square, rectangular.
Described EXPANSION ANCHOR BOLTS, nut and screw flight section scyewed joint.
The utility model knocks the dop of the end of screw rod when mounted, can not damage the screw thread of screw rod end, shock resistance, be convenient to use repeatedly, when fastening or dismounting, clamp dop, can prevent screw rod, be convenient to operation with the nut activity, and the threaded tapering of inboard tapering is overlapped in swelling, the swelling cover is thickeied gradually from the end, and undersized makes that the area of contact of the two is big, novel and reasonable structure, self-locking property is good.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Embodiment
One end of screw rod 1 is certain taper, its thread section end is provided with dop 5, dop 5 cross sections are square, knock the dop 5 of screw rod 1 end during installation, can not damage the screw thread of screw rod 1 end, shock resistance, be convenient to use repeatedly, when fastening or dismounting, clamp dop 5, turn nut 3, can prevent that screw rod 1 is with nut 3 activities, easy operating, swelling cover 2 is provided with axial distending seam 4 near screw rod 1 tapering end, and the tapering of the tapering threaded 1 of 2 inboards is overlapped in swelling, and swelling cover 2 is thickeied gradually from the end, its inner end diameter is slightly less than screw rod 1 tapering end diameter, makes the two that enough big area of contact is arranged like this, and 2 swellings are overlapped in the taper ends of screw rod 1 and swelling, and then fix screw rod, the thread section scyewed joint of nut 3 and screw rod 1.
The cross section of dop 1 also can be rectangular or other polygonal.
Claims (3)
1, a kind of EXPANSION ANCHOR BOLTS, comprise an end be tapering screw rod (1), be sleeved on swelling cover (2) and nut (3) on the screw rod (1), wherein swelling cover (2) is provided with axial distending seam (4) near screw rod (1) tapering end, it is characterized in that: the thread section end of screw rod (1) is provided with dop (5), tapering threaded (1) tapering that swelling cover (2) is inboard, and swelling cover (2) is thickeied gradually from the end, and its internal diameter is slightly less than screw rod (1) tapering end diameter.
2, EXPANSION ANCHOR BOLTS as claimed in claim 1 is characterized in that: dop (5) cross section is polygonals such as square, rectangular.
3, EXPANSION ANCHOR BOLTS as claimed in claim 1 is characterized in that: the thread section scyewed joint of nut (3) and screw rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212711 CN2527771Y (en) | 2002-02-02 | 2002-02-02 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212711 CN2527771Y (en) | 2002-02-02 | 2002-02-02 | Expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2527771Y true CN2527771Y (en) | 2002-12-25 |
Family
ID=33692348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212711 Expired - Fee Related CN2527771Y (en) | 2002-02-02 | 2002-02-02 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2527771Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253176A (en) * | 2018-11-14 | 2019-01-22 | 湖南中特液力传动机械有限公司 | Surely type fluid-flywheel clutch coupling arrangement and application are filled |
-
2002
- 2002-02-02 CN CN 02212711 patent/CN2527771Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253176A (en) * | 2018-11-14 | 2019-01-22 | 湖南中特液力传动机械有限公司 | Surely type fluid-flywheel clutch coupling arrangement and application are filled |
| CN109253176B (en) * | 2018-11-14 | 2024-03-08 | 湖南中特液力传动机械有限公司 | Fixed-charging type hydraulic coupler connecting device and application |
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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 |