JPH0241714U - - Google Patents
Info
- Publication number
- JPH0241714U JPH0241714U JP12057488U JP12057488U JPH0241714U JP H0241714 U JPH0241714 U JP H0241714U JP 12057488 U JP12057488 U JP 12057488U JP 12057488 U JP12057488 U JP 12057488U JP H0241714 U JPH0241714 U JP H0241714U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- screw
- screwdriver
- contact
- tightening
- 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
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
第1図は本考案の原理を説明するための模式的
平面図、第2図a,b,及びcは本考案の一実施
例を示す要部側面図と要部斜視図、第3図aとb
は従来のネジ取り外し防止方法を示す模式的要部
斜視図である。
図において、1はスリワリ付きネジ、11は十
字穴付きネジ、3はビツト作用面、4はビツト非
作用面、10はビツト部、15はビツト係入孔、
をそれぞれ示す。
Fig. 1 is a schematic plan view for explaining the principle of the present invention, Fig. 2 a, b, and c are side views and perspective views of essential parts showing an embodiment of the invention, Fig. 3 a and b
FIG. 1 is a schematic perspective view of a main part showing a conventional screw removal prevention method. In the figure, 1 is a slotted screw, 11 is a cross-recessed screw, 3 is a bit working surface, 4 is a bit non-working surface, 10 is a bit part, 15 is a bit insertion hole,
are shown respectively.
Claims (1)
すことができない構造のネジ部材であつて、 ネジ回しをネジ締め方向に回動した時、そのビ
ツト部10に当接するビツト作用面3と、 ネジ回しをネジ締め方向と反対方向に回動した
時、当該ネジ回しのビツト10に当接しないビツ
ト非作用面4と、 によつてネジの頭部に形成されるビツト係入孔1
5を構成してなることを特徴とするネジ部材。[Scope of Claim for Utility Model Registration] A screw member that cannot be easily removed once it has been tightened, and that comes into contact with the bit portion 10 when the screwdriver is turned in the direction of tightening the screw. A bit action surface 3 formed on the head of the screw by a bit non-action surface 4 that does not come into contact with the bit 10 of the screwdriver when the screwdriver is rotated in the opposite direction to the screw tightening direction. Insertion hole 1
A screw member comprising: 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12057488U JPH0241714U (en) | 1988-09-13 | 1988-09-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12057488U JPH0241714U (en) | 1988-09-13 | 1988-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0241714U true JPH0241714U (en) | 1990-03-22 |
Family
ID=31366807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12057488U Pending JPH0241714U (en) | 1988-09-13 | 1988-09-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0241714U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030025168A (en) * | 2001-09-19 | 2003-03-28 | 마모루 우에노 | Crime prevention screw, embedding material of screw head, screw-use crime prevention seat and crime prevention screw set |
JP2009185995A (en) * | 2008-02-08 | 2009-08-20 | Nitto Seiko Co Ltd | Screw |
-
1988
- 1988-09-13 JP JP12057488U patent/JPH0241714U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030025168A (en) * | 2001-09-19 | 2003-03-28 | 마모루 우에노 | Crime prevention screw, embedding material of screw head, screw-use crime prevention seat and crime prevention screw set |
JP2009185995A (en) * | 2008-02-08 | 2009-08-20 | Nitto Seiko Co Ltd | Screw |
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