CN2168112Y - Expansion screw assemblage - Google Patents
Expansion screw assemblage Download PDFInfo
- Publication number
- CN2168112Y CN2168112Y CN 93217955 CN93217955U CN2168112Y CN 2168112 Y CN2168112 Y CN 2168112Y CN 93217955 CN93217955 CN 93217955 CN 93217955 U CN93217955 U CN 93217955U CN 2168112 Y CN2168112 Y CN 2168112Y
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- expand tube
- expansion
- tapered cup
- 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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Abstract
The utility model discloses an expansion screw bolt assemblage. The configuration of a screw nut has taper and a hexagonal bolt passes through an expansion tube to screw with a conical screw nut. The hexagonal bolt is screwed, the conical screw nut moves into the expansion tube in an axial direction, the expansion tube is tightly expanded and the object is fixed. The screw bolt has the advantages of flat and beautiful installation appearance and convenient operation.
Description
The utility model is a kind of expansion bolt assembly, be used for wall, ground etc. locate to give boring fixing, object is installed.
EXPANSION ANCHOR BOLTS commonly used generally comprises bolt, nut, expand tube, and bolt one end has tapering, and the other end has screw thread, bolt passes expand tube and the object that is fixed, and compresses the turn nut with nut, taper bolt moves in expand tube vertically, and fixation is played in the expand tube swelling.But along with bolt moves, bolt head stretches out the fixation surface, and not only out-of-flatness is attractive in appearance, and extension takes up space, when hour operation inconvenience of installing space, even because of spatial constraints fixing not tight.
Chinese patent (notification number: 2045442U) disclose a kind of EXPANSION ANCHOR BOLTS.
Fig. 1 is the structural drawing of this bolt.
As shown in Figure 1: hexagon head bolt 1 passes spring washer 2 successively, plain washer 3, and tubular awl wedge 4 spins with internal thread in the expand tube 5, and turn hexagon head bolt 1 moves bolt vertically, compresses the awl wedge, reaches the purpose of swelling.It is more smooth that this EXPANSION ANCHOR BOLTS is installed the back outward appearance.But need machining screw in expand tube, processing inconvenience when expand tube is longer, after expand tube was bored the wedge distending, screw strength was influenced.
The purpose of this utility model: overcome the deficiency of above-mentioned EXPANSION ANCHOR BOLTS, a kind of flat appearance, easy to operate, expansion bolt assembly that intensity is high installed is provided.
Main points of the present utility model:
This expansion bolt assembly nut profile has tapering, and tapered cup nut small end face external diameter is slightly less than the expand tube internal diameter, stretches into expand tube one end, and hexagon head bolt passes expand tube and tapered cup nut spins.When the turn hexagon head bolt, tapered cup nut moves vertically, the swelling expand tube.
Above-mentioned tapered cup nut outer circumferential face can have axial groove at interval, rotates with bolt to prevent nut.
Effect of the present utility model: processing is simple, and hexagon head bolt is a standard piece, and tapered cup nut can be produced by batch.This bolt is installed the back flat appearance in addition, is suitable for the fixedly connected object of less installing space.Connecting thread does not all expose, and is smooth attractive in appearance.
Below in conjunction with accompanying drawing this expansion bolt assembly is described in detail.
Fig. 2 is a structural drawing of the present utility model.
As shown in Figure 2: the end at expand tube 5 has a tapered cup nut 7, and this nut profile has tapering, axial groove is arranged in that outer circumferential face is spaced apart, to strengthen the stiction on surface.Tapered cup nut small end face external diameter can stretch into earlier in the expand tube less than the expand tube internal diameter, and is easy for installation on the one hand, adds the area of contact of big nut and expand tube on the other hand, prevents that nut from rotating with bolt.Hex head bolt 1 passes compression spring 2 and spins with tapered cup nut, and nut and expand tube are put into and given boring, and when turning the hex head bolt head, tapered cup nut 7 moves in expand tube, struts expand tube, fixed object.
Claims (3)
1, a kind of expansion bolt assembly comprises expand tube, nut and hexagon head bolt, it is characterized in that: nut (7) profile has tapering, and hexagon head bolt (1) passes expand tube (5) and spins with tapered cup nut.
2, expansion bolt assembly according to claim 1 is characterized in that, the small end external diameter of tapered cup nut is less than the expand tube internal diameter.
3, expansion bolt assembly according to claim 1 is characterized in that, the tapered cup nut outer circumferential face has axial groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93217955 CN2168112Y (en) | 1993-07-12 | 1993-07-12 | Expansion screw assemblage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93217955 CN2168112Y (en) | 1993-07-12 | 1993-07-12 | Expansion screw assemblage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2168112Y true CN2168112Y (en) | 1994-06-08 |
Family
ID=33797744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93217955 Expired - Fee Related CN2168112Y (en) | 1993-07-12 | 1993-07-12 | Expansion screw assemblage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2168112Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105904363A (en) * | 2016-05-30 | 2016-08-31 | 安瑞装甲材料（芜湖）科技有限公司 | Bulletproof helmet clamping device |
-
1993
- 1993-07-12 CN CN 93217955 patent/CN2168112Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105904363A (en) * | 2016-05-30 | 2016-08-31 | 安瑞装甲材料（芜湖）科技有限公司 | Bulletproof helmet clamping device |
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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 |