JPS6426011A - Screw device - Google Patents
Screw deviceInfo
- Publication number
- JPS6426011A JPS6426011A JP17965887A JP17965887A JPS6426011A JP S6426011 A JPS6426011 A JP S6426011A JP 17965887 A JP17965887 A JP 17965887A JP 17965887 A JP17965887 A JP 17965887A JP S6426011 A JPS6426011 A JP S6426011A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- driven
- hexagonal prism
- neck
- recess
- 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
Links
Abstract
PURPOSE: To enable a one-way screw to be taken out only by a special method without damaging other things by providing a hidden screw driven out means on the screw head. CONSTITUTION: A screw shaft 1 has a screw head 2 at one end. A hexagonal prism 5 is arranged on the top surface of the screw head 2 via a neck 4. The neck 4 and the hexagonal prism 5, as a setting-up tool, form the screw driven means B. A recess 6 as a hidden screw driven-out means C is arranged at the back of the screw head 2. The screw A can be set up by engaging the hexagonal prism 5 in the distal end of a box wrench and the like. After the setting, the hexagonal prism 5 is taken away by cutting off the neck 4. To drive out the screw, it is necessary to cut the periphery of the screw A with a file to expose the recess 6 at one side. The screw can then be driven out by a special screw driven-out tool such as turning around a protrusion engaged in the recess 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17965887A JPS6426011A (en) | 1987-07-17 | 1987-07-17 | Screw device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17965887A JPS6426011A (en) | 1987-07-17 | 1987-07-17 | Screw device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426011A true JPS6426011A (en) | 1989-01-27 |
Family
ID=16069620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17965887A Pending JPS6426011A (en) | 1987-07-17 | 1987-07-17 | Screw device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426011A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0522254U (en) * | 1991-09-06 | 1993-03-23 | 日本精工株式会社 | Tilt type steering device |
JP2003254312A (en) * | 2002-03-04 | 2003-09-10 | Hironobu Kuroda | Fastener component for preventing tampering and fastening structure |
JP2014062604A (en) * | 2012-09-21 | 2014-04-10 | Toyota Motor Corp | Bolt fastening structure for vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056812B2 (en) * | 1976-08-03 | 1985-12-12 | シユ−ベルト、ウント、ザルツエル、マシ−ネンフアブリ−ク、アクチエンゲゼルシヤフト | Method and device for removing separated contaminants from open-end spinning equipment |
-
1987
- 1987-07-17 JP JP17965887A patent/JPS6426011A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056812B2 (en) * | 1976-08-03 | 1985-12-12 | シユ−ベルト、ウント、ザルツエル、マシ−ネンフアブリ−ク、アクチエンゲゼルシヤフト | Method and device for removing separated contaminants from open-end spinning equipment |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0522254U (en) * | 1991-09-06 | 1993-03-23 | 日本精工株式会社 | Tilt type steering device |
JP2003254312A (en) * | 2002-03-04 | 2003-09-10 | Hironobu Kuroda | Fastener component for preventing tampering and fastening structure |
JP2014062604A (en) * | 2012-09-21 | 2014-04-10 | Toyota Motor Corp | Bolt fastening structure for vehicle |
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