JP2009243689A5

JP2009243689A5 -

Info

Publication number: JP2009243689A5
Application number: JP2009142711A
Authority: JP
Filing date: 2009-06-15
Publication date: 2010-05-20
Anticipated expiration: 2027-04-05

Claims

ねじ部が設けられた軸部と、該軸部の一端に設けられた頭部とを有し、該頭部頂面にドライバビットが係合するビット係合穴が設けられ、該ビット係合穴は、軸部の中心軸線に沿って形成された中心穴部と、該中心穴部から放射状に延びる複数の翼部係合溝と、を備え、該翼部係合溝は、放射方向端部に位置する溝端壁が、中心穴部の底部に向かって中心軸線に近づく方向に傾斜する傾斜部と、該傾斜部と段部を介して接続され頭部頂面に向けて延びる平行部と、を備えた構成のビット係合穴付きねじにおいて、
前記段部は、中心軸線に対して直交する直交線に対して中心軸線と反対側の外端部よりも中心軸線側の内端部が深くなる方向に傾斜する傾斜段部となっており、前記平行部の頭部頂面側の端部が傾斜部の延長線上に位置する構成となっていることを特徴とするビット係合穴付きねじ。 The shaft has a threaded portion and a head portion provided at one end of the shaft portion, and a bit engaging hole for engaging a driver bit is provided on the top surface of the head portion. The hole includes a central hole portion formed along the central axis of the shaft portion, and a plurality of wing portion engaging grooves extending radially from the central hole portion, the wing portion engaging grooves having radial ends. A groove end wall that is located on the bottom portion of the center hole portion and inclines in a direction approaching the central axis toward the bottom of the center hole portion; In a screw with a bit engagement hole having a configuration comprising:
The stepped portion is an inclined stepped portion that is inclined in a direction in which the inner end on the side of the central axis is deeper than the outer end on the side opposite to the central axis with respect to an orthogonal line orthogonal to the central axis . A screw with a bit engagement hole, wherein an end of the parallel portion on the top surface side is positioned on an extension line of the inclined portion .

ビット係合穴は４つの翼部係合溝を備えた十字穴であり、傾斜部が日本工業規格ＪＩＳＢ１０１２−１９８５に規定されるＨ形十字穴に準拠した規格形状である請求項１に記載のビット係合穴付きねじ。 Bit engaging hole is a cross recess with four wings engaging groove, according to claim 1 inclined portion is a standard shape that conforms to the H-shaped cross recess defined in Japanese Industrial Standard JISB1012-1985 Screw with bit engagement hole.

請求項１に記載の構成を有する異なるサイズの一群のビット係合穴付きねじとこのねじ群に用いられるドライバビットとの組み合わせであって、
各ねじサイズのビット係合穴の翼部係合溝については、傾斜部の形状寸法は各ねじサイズとも同一で、傾斜部の底部側の端部の頭部頂面からの深さはねじサイズが大きくなるにしたがって段階的に深くなっており、傾斜部の延長線と頭部頂面との交点を平行部の頭部頂面側の端部とすることにより、平行部の深さをねじサイズが大きくなるに従って段階的に大きくなるように設定し、
ドライバビットは、ビット係合穴の中心穴部に係合される基部と、ビット係合穴の翼部係合溝に係合する放射状の翼部とを備え、該翼部の外側面は、各ねじサイズのビット係合穴に共通の傾斜部に係合する翼部傾斜部と、該翼部傾斜部の傾斜延長線に沿って設けられ傾斜延長線から外側に張り出して各ねじサイズの翼部係合溝の平行部に係合する複数段の翼部平行部が設けられ、各翼部平行部は、一つ小さいねじサイズのビット係合穴の平行部より平行部の深さが増大した領域に対応して階段状に張り出す構成となっていることを特徴とする一群のビット係合穴付きねじとドライバビットとの組み合わせ。 A combination of a group of bit engagement hole screws of different sizes having the configuration according to claim 1 and a driver bit used in the screw group,
For the wing engagement groove of the bit engagement hole of each screw size, the shape of the inclined portion is the same for each screw size, and the depth from the top of the head at the bottom side of the inclined portion is the screw size The depth of the parallel part is increased by making the intersection of the extension line of the inclined part and the top surface of the head the end of the parallel part on the top surface side of the head by increasing the depth of the parallel part. Set to increase step by step as the size increases,
The driver bit includes a base portion that is engaged with the center hole portion of the bit engagement hole, and a radial wing portion that engages with the wing portion engagement groove of the bit engagement hole. A blade inclined portion that engages a common inclined portion in a bit engaging hole of each screw size, and a blade of each screw size provided along an inclined extension line of the blade inclined portion and projecting outward from the inclined extension line There are multiple stages of wing parallel parts that engage the parallel part of the part engaging groove, and each wing part parallel part has a greater depth than the parallel part of the bit engagement hole of one smaller screw size. A combination of a screw with a group of bit engaging holes and a driver bit, wherein the screw is configured to project in a stepped manner corresponding to the region.

ビット係合穴は４つの翼部係合溝を備えた十字穴であり、翼部係合溝の傾斜部の形状が日本工業規格ＪＩＳＢ１０１２−１９８５に規定されるＨ形十字穴の形状に準拠した規格
形状である請求項３に記載の一群のビット係合穴付きねじとドライバビットとの組み合わせ。 The bit engagement hole is a cross hole provided with four wing part engagement grooves, and the shape of the inclined part of the wing part engagement groove conforms to the shape of the H-shaped cross hole defined in Japanese Industrial Standard JIS B1012-1985. 4. A combination of a group of bit engagement hole screws and driver bits according to claim 3, wherein the combination is a standard shape.

翼部係合溝の傾斜部の底部側端部を通る円の直径寸法であるｇ寸法が同一のビット係合穴を備えたねじサイズがＭ３乃至Ｍ５のビット係合穴付きねじであって、
沈み深さをｑ、ねじサイズをｘとすると、
ｑ＝０．０５ｘ^２＋０．２７ｘ＋０．２８
の関係となっている請求項２に記載のビット係合穴付きねじ。 G dimension is a diameter of a circle passing through the bottom end of the inclined portion of the blade portion engaging groove a bit engagement hole threaded screws size M3 to M5 having the same bit engaging hole,
The precipitation only depth q, and the screw size and x,
q = 0.05x ² + 0.27x + 0.28
The screw with a bit engagement hole according to claim 2 , wherein the relationship is as follows .

ｇ寸法は、２．０９ｍｍとなっている請求項５に記載のビット係合穴付きねじ。 The screw with a bit engagement hole according to claim 5 , wherein g dimension is 2.09 mm.

翼部係合溝の傾斜部の底部側端部を通る円の直径寸法であるｇ寸法が同一のビット係合穴を備えたねじサイズがＭ６及びＭ８のビット係合穴付きねじであって、
沈み深さをｑ、ねじサイズをｘとすると、
ｑ＝０．７５ｘ−１．４２
の関係となっている請求項２に記載のビット係合穴付きねじ。 G dimension is a diameter of a circle passing through the bottom end of the inclined portion of the blade portion engaging groove a bit engagement hole threaded screws size M6 and M8 having the same bit engaging hole,
The precipitation only depth q, and the screw size and x,
q = 0.75x-1.42
The screw with a bit engagement hole according to claim 2 , wherein the relationship is as follows .

ｇ寸法は、３．４８ｍｍとなっている請求項７に記載のビット係合穴付きねじ。 The screw with a bit engagement hole according to claim 7 , wherein g dimension is 3.48 mm.

翼部係合溝の溝側壁の平行部側の部分が、頭部頂面に向かって徐々に拡がる方向に傾斜する食い付き傾斜面となっている請求項１又は２に記載のビット係合穴付きねじ。 The bit engagement hole according to claim 1 or 2 , wherein a portion of the blade side wall of the wing portion engagement groove on the parallel portion side is a biting inclined surface inclined in a direction gradually expanding toward the top surface of the head. With screw.