CN201679824U - Dowel screw - Google Patents
Dowel screw Download PDFInfo
- Publication number
- CN201679824U CN201679824U CN2010201725373U CN201020172537U CN201679824U CN 201679824 U CN201679824 U CN 201679824U CN 2010201725373 U CN2010201725373 U CN 2010201725373U CN 201020172537 U CN201020172537 U CN 201020172537U CN 201679824 U CN201679824 U CN 201679824U
- Authority
- CN
- China
- Prior art keywords
- screw
- dowel
- stud
- tapping
- double
- 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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- Connection Of Plates (AREA)
Abstract
The utility model discloses a dowel screw. The dowel screw comprises a stud, wherein a self-tapping screw rod is arranged at the other end of the stud; a positioning lug boss is arranged between the stud and the self-tapping screw rod; and the radial dimension of the positioning lug boss is larger than respective diameter of the stud and the self-tapping screw rod. The dowel screw can be used to replace a screw insert embedded into a plastic part, can be mounted by adopting the follow-up technology, simplifies the die and improves the production efficiency. When the plastic part is chromeplated, the chromeplating technology is simplified, and the screw can be easily replaced when screw threads are broken.
Description
Technical field
The utility model relates to fastening piece, in particular for being embedded in the dowel screw in the working of plastics.
Background technique
Plastic article are because its intensity is lower, and bolted place often adopts the screw inserts to be embedded in mode in the working of plastics, has the advantage that is connected firmly, but, pre-buried position is more fixing, adjusts inconvenience, and die cost is higher, change difficulty when screw damages.
The model utility content
The purpose of this utility model provides a kind of dowel screw, substitutes the screw inserts that is embedded in the working of plastics, adopts subsequent technique that dowel screw is installed, and simplifies mould.
In order to achieve the above object, a kind of dowel screw of the present utility model comprises double-screw bolt, and the other end of double-screw bolt is the tapping screw bar, is positioning boss between double-screw bolt and the tapping screw bar, and the positioning boss radial dimension is greater than double-screw bolt and tapping screw shank diameter.
The utility model can be used for substituting the screw inserts that is embedded in working of plastics, adopts subsequent technique that dowel screw is installed, and simplifies mould, enhances productivity, and during working of plastics chromium plating, simplifies chrome-plated process, under the situation that screw silk tooth damages, can replace this screw.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a kind of dowel screw structural representation of the present utility model.
Embodiment
Among Fig. 1, a kind of dowel screw of the present utility model, comprise double-screw bolt 1, double-screw bolt 1 is regular screw threads, being used for bolt connects, the other end of double-screw bolt 1 is a tapping screw bar 2, tapping screw bar 2 is tapered threads, tapping screw bar 2 is installed dowel screw at subsequent technique and is provided convenience to working of plastics, be provided with positioning boss 3 between double-screw bolt 1 and the tapping screw bar 2, positioning boss 3 is circular, and positioning boss 3 diameters are greater than double-screw bolt 1 and tapping screw bar 2 diameters, positioning boss 3 restriction tapping screw bars 2 finally be screwed into the degree of depth, to guarantee the design length of the outer double-screw bolt 1 that stays.
Claims (1)
1. dowel screw, comprise double-screw bolt (1), it is characterized in that the other end of described double-screw bolt (1) is tapping screw bar (2), be positioning boss (3) between double-screw bolt (1) and the tapping screw bar (2), positioning boss (3) radial dimension is greater than double-screw bolt (1) and tapping screw bar (2) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201725373U CN201679824U (en) | 2010-04-28 | 2010-04-28 | Dowel screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201725373U CN201679824U (en) | 2010-04-28 | 2010-04-28 | Dowel screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679824U true CN201679824U (en) | 2010-12-22 |
Family
ID=43344868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201725373U Expired - Fee Related CN201679824U (en) | 2010-04-28 | 2010-04-28 | Dowel screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730300A (en) * | 2018-07-06 | 2018-11-02 | 北京金晟达生物电子科技有限公司 | A kind of fastener |
-
2010
- 2010-04-28 CN CN2010201725373U patent/CN201679824U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730300A (en) * | 2018-07-06 | 2018-11-02 | 北京金晟达生物电子科技有限公司 | A kind of fastener |
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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: 20101222 Termination date: 20110428 |