JPH0389211U - - Google Patents
Info
- Publication number
- JPH0389211U JPH0389211U JP14936889U JP14936889U JPH0389211U JP H0389211 U JPH0389211 U JP H0389211U JP 14936889 U JP14936889 U JP 14936889U JP 14936889 U JP14936889 U JP 14936889U JP H0389211 U JPH0389211 U JP H0389211U
- Authority
- JP
- Japan
- Prior art keywords
- screw
- head
- tool
- removal
- screw head
- 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.)
- Granted
Links
- 230000002265 prevention Effects 0.000 claims description 12
- 230000013011 mating Effects 0.000 claims 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図は本考案の一実施例による取外し防止ね
じの斜視図、第２図は同取外し防止ねじの平面図
、第３図は同取外し防止ねじの正面図、第４図は
第２図のＡ−Ａ線断面図、第５図は他の実施例に
よる取外し防止ねじの平面図、第６図は第５図の
Ｂ−Ｂ線断面図、第７図は更に他の実施例による
取外し防止ねじの斜視図、第８図は同取外し防止
ねじの平面図、第９図は同取外し防止ねじの正面
図、第１０図は第８図のＣ−Ｃ線断面図、第１１
図は更に他の実施例による取外し防止ねじの平面
図、第１２図は第１１図のＤ−Ｄ線断面図、第１
３図は従来例による取外し防止ねじの斜視図、第
１４図は同取外し防止ねじに使われる締付け工具
の正面図、第１５図は他の従来例による取外し防
止ねじの斜視図、第１６図は同取外し防止ねじに
使われる取外し工具の斜視図である。
符号の説明、１……ねじ山、２……ねじ軸部、
３……ねじ頭部、４……締付け部、５……係合溝
、６……壁面、７……スロープ、８……係合凹溝
、９，１５，１９……穴、１０，１８……嵌合筒
体、１１……隆条、１２……ピン、１４，１７…
…工具、１６……座板。
FIG. 1 is a perspective view of a removal prevention screw according to an embodiment of the present invention, FIG. 2 is a plan view of the same removal prevention screw, FIG. 3 is a front view of the same removal prevention screw, and FIG. 5 is a plan view of a screw for preventing removal according to another embodiment, FIG. 6 is a sectional view taken along line B-B of FIG. 5, and FIG. 7 is a sectional view of a screw for preventing removal according to another embodiment. A perspective view of the screw, FIG. 8 is a plan view of the same removal prevention screw, FIG. 9 is a front view of the same removal prevention screw, FIG. 10 is a sectional view taken along line C-C in FIG.
The figure is a plan view of a removal prevention screw according to another embodiment, FIG. 12 is a sectional view taken along the line D-D in FIG.
FIG. 3 is a perspective view of a conventional removal prevention screw, FIG. 14 is a front view of a tightening tool used for the same removal prevention screw, FIG. 15 is a perspective view of another conventional removal prevention screw, and FIG. It is a perspective view of the removal tool used for the removal prevention screw. Explanation of symbols, 1...screw thread, 2...screw shaft,
3... Screw head, 4... Tightening part, 5... Engaging groove, 6... Wall surface, 7... Slope, 8... Engaging groove, 9, 15, 19... Hole, 10, 18 ... Fitting cylinder, 11 ... Ridge, 12 ... Pin, 14, 17 ...
...Tools, 16...Seat board.
Claims (1)
頭部を設け、このねじ頭部の端面にドライバー工
具が締付け方向のみ係合する壁面が立ち上がる締
付け部を突設し、上記ねじ頭部の周面部に取外し
工具が嵌合する凹溝を軸方向に複数溝設したこと
を特徴とする取外し防止ねじ。 (2) ねじ山が刻設されたねじ軸の一端部にねじ
頭部を設け、このねじ頭部の端面にドライバー工
具が締付け方向のみ係合する壁面が立ち上がる締
付け部を突設し、上記ねじ頭部の端面の錆心部に
プラスのドライバー工具の突端が嵌合し該ドライ
バー工具が上記締付け部に係合し得るようにする
ための穴を穿設し、上記ねじ頭部の周面部に取外
し工具が嵌合する凹溝を軸方向に複数溝設したこ
とを特徴とする取外し防止ねじ。 (3) ねじ山が刻設されたねじ軸の一端部にねじ
頭部を設け、このねじ頭部の端面にドライバー工
具が締付け方向のみ係合する壁面が立ち上がる締
付け部を突設し、上記ねじ頭部に取外し工具が嵌
合する非円形状の座板を該頭部から突出して一体
に形成したことを特徴とする取外しねじ。 (4) ねじ山が刻設されたねじ軸の一端部にねじ
頭部を設け、このねじ頭部の端面にドライバー工
具が締付け方向のみ係合する壁面が立ち上がる締
付け部を突設し、上記ねじ頭部の端面の中心部に
プラスのドライバー工具の突端が嵌合し該ドライ
バー工具が上記締付け部に係合し得るようにする
ための穴を穿設し、上記ねじ頭部に取外し工具が
嵌合する非円形状の座板を該頭部から突出して一
体に形成したことを特徴とする取外しねじ。[Scope of Claim for Utility Model Registration] (1) A screw head is provided at one end of a screw shaft with a thread carved therein, and a wall surface that a driver tool engages with only in the tightening direction stands up on the end face of this screw head. 1. A removal prevention screw, characterized in that a plurality of concave grooves into which a removal tool fits are provided in the circumferential surface of the screw head in the axial direction. (2) A screw head is provided at one end of the screw shaft with a thread carved thereon, and a tightening part with a raised wall surface that engages with the driver tool only in the tightening direction is provided protruding from the end face of the screw head. A hole is drilled into the rusted core of the end face of the head so that the tip of a Phillips screwdriver tool can fit into it and the screwdriver tool can be engaged with the tightening part, and A removal prevention screw characterized by having a plurality of grooves in the axial direction into which a removal tool fits. (3) A screw head is provided at one end of the screw shaft with a thread carved on it, and a tightening part with a raised wall that engages with the driver tool only in the tightening direction is provided protruding from the end face of the screw head. A removal screw characterized in that a non-circular seat plate into which a removal tool fits is formed integrally with the head and protrudes from the head. (4) A screw head is provided at one end of the screw shaft with a thread carved therein, and a tightening part with a raised wall that engages with the screwdriver tool only in the tightening direction is provided protruding from the end face of the screw head. A hole is drilled in the center of the end surface of the head so that the tip of a Phillips screwdriver tool can fit therein so that the driver tool can engage with the tightening part, and the removal tool is fitted into the screw head. A removal screw characterized in that a mating non-circular seat plate is integrally formed and protrudes from the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14936889U JPH0645684Y2 (en) | 1989-12-27 | 1989-12-27 | Removal prevention screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14936889U JPH0645684Y2 (en) | 1989-12-27 | 1989-12-27 | Removal prevention screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0389211U true JPH0389211U (en) | 1991-09-11 |
| JPH0645684Y2 JPH0645684Y2 (en) | 1994-11-24 |
Family
ID=31695767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14936889U Expired - Lifetime JPH0645684Y2 (en) | 1989-12-27 | 1989-12-27 | Removal prevention screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645684Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011106559A (en) * | 2009-11-17 | 2011-06-02 | Yamauchi Corp | Torque limiter |
-
1989
- 1989-12-27 JP JP14936889U patent/JPH0645684Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011106559A (en) * | 2009-11-17 | 2011-06-02 | Yamauchi Corp | Torque limiter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645684Y2 (en) | 1994-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |