WO2010024026A1 - Screwdriver bit, screw, and combination thereof - Google Patents
Screwdriver bit, screw, and combination thereof Download PDFInfo
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- WO2010024026A1 WO2010024026A1 PCT/JP2009/061600 JP2009061600W WO2010024026A1 WO 2010024026 A1 WO2010024026 A1 WO 2010024026A1 JP 2009061600 W JP2009061600 W JP 2009061600W WO 2010024026 A1 WO2010024026 A1 WO 2010024026A1
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- Prior art keywords
- screw
- bit
- cross
- blade
- groove
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 70
- 230000001154 acute effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000013011 mating Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
Abstract
A combination of a screw driver bit (10) and a screw (20). In the screwdriver bit (10), radial outer peripheral edges (14a) of a cross edge section (14) and the tilt angle of the outer peripheral edges (14a) are configured so that a tip edge section (12) of the screwdriver bit joins in a wedged manner to outer peripheral edges (23a) of the opening of a cross groove section of a bit fitting groove (22) in the screw. In the screw (20), the dimension of an opening (23) in a screw head is set slightly larger than a dimension (M) in accordance with a JIS standard, the cross groove section extends at a predetermined tilt angle from the opening of the cross groove section to the bottom thereof having a predetermined depth, and tapered inner peripheral surfaces (25) converging stepwise to a dimension (G) in accordance with the JIS standard are formed at portions on the bottom side of tilted inner peripheral surfaces (24a) of the cross groove section (24).
Description
本発明は、ねじ締め作業を円滑に達成すると共にトルク伝達効率を著しく高めることができるドライバービットおよびこれに適合するねじ並びにこれらの組合せに関するものである。
The present invention relates to a driver bit that can smoothly achieve a screw tightening operation and can remarkably increase torque transmission efficiency, a screw adapted to the driver bit, and a combination thereof.
本発明者は、ねじのビット嵌合溝に対するドライバービットの先端刃部の結合が緊密にをそれぞれ備えると共に、これら翼部の先端をその中心部に指向して一定の傾斜で延在する延長翼部として形成した従来のドライバービットにも適合するように、ねじのねじ頭部における十字溝からなるビット嵌合溝の端縁部に、それぞれ所定深さの垂直端壁部とその側壁部とを形成し、これらの垂直端壁部の下縁部よりねじ頸部の中心部に指向して、前記従来のドライバービットの先端部の形状に適合するように、水平および傾斜して延在する溝底部を形成すると共に、その中心底部において緩傾斜の円錐底面を形成してなるねじと、前記ねじのビット嵌合溝の垂直端壁部および水平に延在する溝底部とその側壁部とにそれぞれ係合する直角縁部とその側壁部とを有する翼部を設けると共に、前記各翼部の先端部中心に、前記ねじのビット嵌合溝においてそれぞれ傾斜して延在する溝底部および円錐底面の内部形状に適合するように突出延在する垂直延長翼部を備えてなるドライバービットと、から構成してなる新規なねじとドライバービットの組合せについて提案し、特許を得た（特許文献１参照）。
The inventor of the present invention has an extension blade that extends in a certain inclination with the tip of the blade portion directed toward the center portion thereof, each having a tight coupling of the tip edge portion of the driver bit to the bit fitting groove of the screw. In order to be compatible with a conventional driver bit formed as a portion, a vertical end wall portion and a side wall portion thereof having a predetermined depth are respectively attached to the end edge portion of the bit fitting groove formed of a cross groove in the screw head portion of the screw. Grooves extending horizontally and inclined so as to be adapted to the shape of the tip of the conventional driver bit from the lower edge of these vertical end walls toward the center of the screw neck A screw that forms a conical bottom surface that is gently inclined at the center bottom portion thereof, a vertical end wall portion of a bit fitting groove of the screw, a horizontally extending groove bottom portion, and a side wall portion thereof, respectively. Engage right angle edge and its Providing a wing portion having a side wall portion, and projecting at the center of the tip portion of each wing portion so as to conform to the inner shape of the groove bottom portion and the conical bottom surface extending in an inclined manner in the bit fitting groove of the screw. A new combination of a screw and a driver bit composed of a driver bit provided with a vertically extending wing portion and a patent was obtained (see Patent Document 1).
この特許文献１に記載のねじとドライバービットの組合せにおいては、ねじのねじ頭部における十字溝からなるビット嵌合溝の端縁部に形成した所定深さの垂直端壁部とその側壁部および前記垂直端壁部の下縁部よりねじ頸部の中心部に指向し水平および傾斜して延在する溝底部に対して、ドライバービットの直角縁部とその側壁部とを有する翼部および前記翼部の先端部中心に、前記ねじのビット嵌合溝においてそれぞれ傾斜して延在する溝底部および円錐底面の内部形状に適合するように突出延在するように形成した垂直延長翼部が、それぞれ嵌合当接して、従来のねじとドライバービットの組合せによるようなビット嵌合溝に対するテーパ接触面積を少なくし、むしろ隣接するビット嵌合溝の交差する境界部におけるドライバービットの先端が当接する側壁部の面積を拡大することができ、これによりドライバービットのカムアウト現象の発生を防止することができるようにしたものである。
In the combination of a screw and a driver bit described in Patent Document 1, a vertical end wall portion having a predetermined depth formed on an end edge portion of a bit fitting groove formed of a cross groove in a screw head of the screw, a side wall portion thereof, and A wing portion having a right-angled edge portion of a driver bit and a side wall portion thereof with respect to a groove bottom portion extending from the lower edge portion of the vertical end wall portion toward the center portion of the screw neck portion in a horizontal and inclined manner, and A vertically extending wing portion formed so as to project and extend at the center of the tip portion of the wing portion so as to conform to the inner shape of the groove bottom portion and the conical bottom surface, each extending in an inclined manner in the bit fitting groove of the screw, Each mating contact reduces the taper contact area to the bit mating groove as with a conventional screw and driver bit combination, rather the driver bit at the intersection of adjacent bit mating grooves. It can tip of enlarging the area of the side wall portions abutting, thereby is obtained to be able to prevent the occurrence of come-out phenomenon of the driver bit.
また、従来において、プラスドライバーは、ビット杆の先端部に形成される４枚の刃が、規格（ＪＩＳ規格）通りに形成されるビスやねじ等のビット嵌入溝に合致するように設計されているため、一本のドライバーでは合致するビット嵌入溝を備えたビスやねじ等しか良好に回動することができず不都合があることから、ビスやねじ等のビット嵌入溝への嵌入深さを可変させるだけで、４枚の刃が種々のサイズのビット嵌入溝へ確実に合致させることができ、一本のドライバーで複数のビスやねじ等を回動することができるようにしたプラスドライバーのビット構造が、提案されている（特許文献２参照）。
Conventionally, the Phillips screwdriver is designed so that the four blades formed at the tip of the bit rod match the bit insertion grooves such as screws and screws formed according to the standard (JIS standard). Therefore, only one screw or screw with a matching bit insertion groove can be rotated well with a single screwdriver, which is inconvenient, so the insertion depth of the screw or screw into the bit insertion groove can be reduced. This is a plus screwdriver that allows four blades to be surely matched to bit insertion grooves of various sizes just by changing them, and allows multiple screws and screws to be rotated with a single screwdriver. A bit structure has been proposed (see Patent Document 2).
前記特許文献２に記載されているプラスドライバーのビット構造は、ビット杆の先端部に放射状に突設された所定幅の４枚の刃を有するドライバーのビット構造であって、この４枚の刃は、ビット杆のビット軸芯線に対し直交する面を境界として先端側は、先端側ほど当該ビット軸芯線との距離が小さくなる第一刃に構成され、また基端側は、先端側ほど当該ビット軸芯線との距離が小さくなり、かつ前記直交する面の外方の一部が露出先端面に形成された第二刃に構成され、これらの第一刃の基端における刃幅と、第二刃との先端における刃幅とが異なるように設定され、しかもこれらの第一刃及び第二刃それぞれの側縁は、略平行となるように設定された構成からなるものである。従って、このように構成されたプラスドライバーのビット構造によれば、第一刃及び第二刃のサイズにそれぞれ合致するビット嵌入溝を備えたビスやねじ等に対して、ガタつくことなく回動することが可
能となるものである。 The bit structure of a plus driver described in Patent Document 2 is a bit structure of a driver having four blades having a predetermined width and projecting radially from the tip of a bit rod. The tip end side of the surface of the bit rod perpendicular to the bit axis line of the bit rod is configured as a first blade whose distance from the bit axis line becomes smaller toward the tip side, and the base end side corresponds to the tip side. The distance from the bit axis is reduced, and a part of the outer side of the orthogonal surface is formed on the exposed tip surface to be a second blade, the blade width at the base end of these first blades, The blade widths at the tips of the two blades are set so as to be different from each other, and the side edges of the first blade and the second blade are configured to be substantially parallel. Therefore, according to the bit structure of the Phillips screwdriver configured in this way, it can be rotated without rattling with respect to a screw or screw having a bit insertion groove that matches the size of the first blade and the second blade, respectively. It is possible to do.
能となるものである。 The bit structure of a plus driver described in Patent Document 2 is a bit structure of a driver having four blades having a predetermined width and projecting radially from the tip of a bit rod. The tip end side of the surface of the bit rod perpendicular to the bit axis line of the bit rod is configured as a first blade whose distance from the bit axis line becomes smaller toward the tip side, and the base end side corresponds to the tip side. The distance from the bit axis is reduced, and a part of the outer side of the orthogonal surface is formed on the exposed tip surface to be a second blade, the blade width at the base end of these first blades, The blade widths at the tips of the two blades are set so as to be different from each other, and the side edges of the first blade and the second blade are configured to be substantially parallel. Therefore, according to the bit structure of the Phillips screwdriver configured in this way, it can be rotated without rattling with respect to a screw or screw having a bit insertion groove that matches the size of the first blade and the second blade, respectively. It is possible to do.
さらに、寸法管理が容易であって、製造しやすく、ドライバーのカムアウトを防止することができる、特に精密ねじに適した十字穴付ねじとして、各溝の底面を共通の球面の一部により形成し、各溝の外周側端面はねじの軸線に平行な円筒面とし、各溝において該溝に係合するドライバービットの羽根の両側面が当接して駆動面となる対向側面を平行に形成した構成からなるものが、提案されている（特許文献３参照）。
Furthermore, the bottom of each groove is formed by a part of a common spherical surface as a cross-recessed screw that is particularly suitable for precision screws, which is easy to manufacture, easy to manufacture, and can prevent the driver from coming out. The outer peripheral side end surface of each groove is a cylindrical surface parallel to the screw axis, and the opposite side surfaces that serve as the drive surface are formed in parallel by contacting both side surfaces of the blade of the driver bit that engages with the groove in each groove. Has been proposed (see Patent Document 3).
前記特許文献３に記載されている十字穴付ねじは、各羽根の先端面を共通の球面の一部により形成し、各羽根の外周面を円筒面とし、各羽根の両側面を平行に形成したドライバービットを使用することにより、十字のトルクを受ける羽根の面は軸心に対し角度を持たないので、ドライバーのカムアウトを確実に防止することができるものとされている。また、前記構成からなる十字穴付ねじは、その製造時の寸法管理に際して、従来のようにＪＩＳ規格のねじ用十字穴や、ＪＣＩＳ規格（日本写真機工業規格）の精密ねじ用十字穴の
必要がなく、十字穴の羽根係合溝幅とＭ寸法だけで管理するので、非常に製造しやすく、製造管理のための測定がし易いものとなるとされている。そして、この種の十字穴付ねじは、従来のように、対向する係合溝下端部の間隔Ｇや、対向する係合溝の上端部の間隔Ｍの管理等のＱ寸法の管理は行わず、係合溝の総深さであるＴ寸法のみの管理となり、これらの点においても非常に管理し易くなるものとされている。 In the cross-recessed screw described in Patent Document 3, the tip surface of each blade is formed by a part of a common spherical surface, the outer peripheral surface of each blade is a cylindrical surface, and both side surfaces of each blade are formed in parallel. By using the screwdriver bit, the face of the blade receiving the cross-shaped torque does not have an angle with respect to the shaft center, so that it is possible to reliably prevent the driver from coming out. In addition, the cross-recessed screw having the above-described configuration requires a cross hole for JIS standard screws or a cross hole for precision screws according to JIS standard (Japan Camera Industry Standard) for dimensional control during manufacture. However, since it is managed only by the width of the blade engaging groove and the dimension M of the cross hole, it is considered that the manufacturing is very easy and the measurement for manufacturing management is easy. And this type of cross-recessed screw does not manage the Q dimension such as the management of the distance G between the lower ends of the opposing engaging grooves and the distance M between the upper ends of the opposing engaging grooves. Only the T dimension, which is the total depth of the engaging groove, is managed, and in these respects, it is very easy to manage.
必要がなく、十字穴の羽根係合溝幅とＭ寸法だけで管理するので、非常に製造しやすく、製造管理のための測定がし易いものとなるとされている。そして、この種の十字穴付ねじは、従来のように、対向する係合溝下端部の間隔Ｇや、対向する係合溝の上端部の間隔Ｍの管理等のＱ寸法の管理は行わず、係合溝の総深さであるＴ寸法のみの管理となり、これらの点においても非常に管理し易くなるものとされている。 In the cross-recessed screw described in Patent Document 3, the tip surface of each blade is formed by a part of a common spherical surface, the outer peripheral surface of each blade is a cylindrical surface, and both side surfaces of each blade are formed in parallel. By using the screwdriver bit, the face of the blade receiving the cross-shaped torque does not have an angle with respect to the shaft center, so that it is possible to reliably prevent the driver from coming out. In addition, the cross-recessed screw having the above-described configuration requires a cross hole for JIS standard screws or a cross hole for precision screws according to JIS standard (Japan Camera Industry Standard) for dimensional control during manufacture. However, since it is managed only by the width of the blade engaging groove and the dimension M of the cross hole, it is considered that the manufacturing is very easy and the measurement for manufacturing management is easy. And this type of cross-recessed screw does not manage the Q dimension such as the management of the distance G between the lower ends of the opposing engaging grooves and the distance M between the upper ends of the opposing engaging grooves. Only the T dimension, which is the total depth of the engaging groove, is managed, and in these respects, it is very easy to manage.
しかしながら、前記特許文献２に記載のプラスドライバーのビット構造においては、一本のドライバーで複数のビスやねじ等を回動することができる利点はあるが、ビット杆の先端側に形成するそれぞれ異なるサイズの刃を、ビスやねじ等のビット嵌入溝のサイズに合わせて製造する必要があり、製造が煩雑となり製造コストが増大する難点がある。また、前記特許文献３に記載の十字穴付ねじとそのドライバービットの組合せによれば、寸法管理が容易であり、製造しやすくなる利点はあるが、ドライバービットの羽根を係合する羽根係合溝の両側には、それぞれ垂直壁面である第１駆動面とそれに対向する第２駆動面が平行に形成され、それぞれの溝底面は共通部分として球面状の溝中心底面が形成されており、これに適合するドライバービットの羽根の先端面もそれぞれ共通の球面の一部により形成されているため、一般に精密ねじでは羽根係合溝の深さの設計に限界があり、しかも溝底面が球面状であることから、ねじの羽根係合溝に対するドライバービットの羽根先端部の係合による緊密性は比較的低くなり、安定性に欠けるばかりでなく、現実のねじ締め作業においては、ドライバーのカムアウトを発生する可能性が高くなり、常に安定したねじ締め作業を行うには十分でない難点がある。
However, the bit structure of the plus driver described in Patent Document 2 has an advantage that a plurality of screws, screws, and the like can be rotated by a single screwdriver, but each is different on the tip side of the bit rod. It is necessary to manufacture a blade having a size in accordance with the size of a bit insertion groove such as a screw or a screw, which makes manufacturing difficult and increases manufacturing cost. Further, according to the combination of the cross-recessed screw described in Patent Document 3 and its driver bit, there is an advantage that dimensional management is easy and manufacture is easy, but blade engagement for engaging the blade of the driver bit is possible. On both sides of the groove, a first driving surface, which is a vertical wall surface, and a second driving surface opposite to each other are formed in parallel, and each groove bottom surface has a spherical groove center bottom surface as a common portion. The tip of the blade of the driver bit that conforms to the above is also formed by a part of the common spherical surface, so in general, there is a limit to the depth design of the blade engagement groove with precision screws, and the groove bottom is spherical For this reason, the tightness due to the engagement of the tip of the blade of the driver bit with the blade engagement groove of the screw is relatively low, and it is not stable. More likely to occur the bar cam out, there is a drawback not sufficient to do always stable screwing operation.
従来のドライバービットとねじとの組合せにおいては、前記特許文献１において確認されているように、ねじ締め抵抗が大きな場合において、ドライバービットのカムアウトの発生と共に、ねじの十字形溝を形成するテーパ側壁部に多大な応力が負荷されて、前記テーパ側壁部のねじ軸中心部側が破損し、ドライバービットが空転しカムアウトしてしまうことが確認されている。このような現象に鑑みて、従来のドライバービットとねじとの組合せにおいては、十字形溝の外周縁部およびその近傍については、ドライバービットの先端刃部との嵌合が緊密でないことが判明した。従って、本発明者は、この点に着目して鋭意検討を重ねた結果、次のような構成からなるドライバービットの開発に成功した。
In a conventional combination of a driver bit and a screw, as confirmed in Patent Document 1, when the screw tightening resistance is large, a taper side wall that forms a screw cross-shaped groove along with the occurrence of cam bit out of the driver bit It has been confirmed that a large amount of stress is applied to the portion, the screw shaft center portion side of the tapered side wall portion is damaged, and the driver bit slips and cams out. In view of such a phenomenon, it has been found that in the conventional combination of the driver bit and the screw, the outer peripheral edge portion of the cross-shaped groove and the vicinity thereof are not closely fitted with the tip edge portion of the driver bit. . Therefore, as a result of intensive studies focusing on this point, the present inventor succeeded in developing a driver bit having the following configuration.
すなわち、ねじのビット嵌合溝に対するドライバービットの先端刃部の結合を緊密に行うことができると共に、ねじの取付けおよび取外しを行う際の回転駆動力すなわちトルクの伝達を最も効率良く行うことができ、ねじ締め作業におけるドライバービットのカムアウトの発生を確実に防止し、そして寸法の異なる複数種類のねじに対してもそれぞれ有効に適用することができるドライバービットおよびねじを得るべく検討並びに試作を重ねた結果、ねじ頭部に設けた十字形のビット嵌合溝に嵌合する十字形刃片からなる先端刃部を備えたドライバービットにおいて、前記先端刃部は、ねじ頭部の開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を備えたビット嵌合溝に対し、前記十字形溝部の各開口外周縁部においてそれぞれクサビ状に結合するように、前記十字形刃片の各半径方向外周縁部とその傾斜角度をそれぞれ設定することにより、ねじ締め作業においてのカムアウトを確実に防止することができると共に、ねじに対し最小の駆動力で最大のトルク伝達を行うことができ、常に安定したねじ締め作業を容易に達成することができるドライバービットを得ることができることを突き止めた。
In other words, the tip edge of the driver bit can be tightly coupled to the bit fitting groove of the screw, and the rotational driving force, that is, the torque can be transmitted most efficiently when attaching and removing the screw. In order to obtain a driver bit and screw that can reliably prevent the driver bit from coming out during screw tightening and can be applied effectively to multiple types of screws with different dimensions As a result, in the driver bit having a tip blade portion made of a cruciform blade piece that fits into a cruciform bit fitting groove provided on the screw head, the tip blade portion has a required depth from the opening of the screw head. For the bit fitting groove provided with a cross-shaped groove extending toward the center of the screw neck at a predetermined inclination angle to the bottom of the sleeve, the cross-shaped By setting the radial outer peripheral edge of the cruciform blade piece and its inclination angle so as to be joined in a wedge shape at the outer peripheral edge of each opening, it is possible to reliably prevent cam-out during screw tightening operations. It has been found that a screwdriver bit can be obtained that can perform a maximum torque transmission with a minimum driving force with respect to the screw and can always achieve a stable screw fastening operation easily.
このような構成からなるドライバービットの使用に際しては、これに適用するねじとして、従来のＪＣＩＳ規格に基づく精密ねじのみならず、ＪＩＳ規格に基づくねじのねじ締め作業において、有効に使用することができる。また、前記構成からなるドライバービットは、その先端刃部において、所要の傾斜角度で形成される十字形刃片の各半径方向外周縁部の先端部分において、径寸法を段部状に縮小するテーパ縁部をそれぞれ設けることにより、寸法の異なる複数種類のねじ、特に寸法の小さい精密ねじ等に対して、それぞれ有効に適用することができることを確認した。さらに、前記先端刃部においては、十字形刃片のそれぞれ半径方向に延在する刃幅を、半径方向外周縁部に指向して末広がり状に形成し、それぞれ隣接する刃片との拡開角度が鋭角となるように設定することにより、前述したねじのビット嵌合溝に対するドライバービットの先端刃部の結合を緊密に行うことや、ねじの取付けおよび取外しを行う際の回転駆動力すなわちトルクの伝達を最も効率良く行うことについて、より有効であることを突き止めた。
When using the driver bit having such a configuration, the screw applied to this can be used effectively not only in the conventional precision screw based on the JCIS standard, but also in the screw tightening operation of the screw based on the JIS standard. . In addition, the driver bit having the above-described configuration has a taper that reduces the diameter in a stepped shape at the distal end portion of each radially outer peripheral portion of the cross-shaped blade piece formed at a required inclination angle at the distal end blade portion. It was confirmed that each edge portion can be effectively applied to a plurality of types of screws having different dimensions, particularly precision screws having a small dimension. Furthermore, in the tip blade portion, the blade width extending in the radial direction of each of the cruciform blade pieces is formed in a divergent shape toward the outer peripheral edge portion in the radial direction, and the spread angle with each adjacent blade piece Is set to be an acute angle, so that the tip of the screwdriver bit is tightly coupled to the screw bit fitting groove described above, and the rotational driving force, that is, the torque when installing and removing the screw is tight. We have found that it is more effective for the most efficient transmission.
そして、前記構成からなるドライバービットに対し、より有効に適合するねじとしては、ねじ頭部の開口部から所要深さの底部までＪＩＳ規格やＪＣＩＳ規格に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじにおいて、前記ビット嵌合溝の十字形溝部は、ねじ頭部の開口部をＪＩＳ規格やＪＣＩＳ規格によるＭ寸法より若干拡大設定し、前記開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在するように構成し、この十字形溝部の各傾斜内周面部の底部側部分において、前記ＪＩＳ規格やＪＣＩＳ規格によるＧ寸法まで段部状に縮小するテーパ内周面部をそれぞれ形成したねじを使用することが、極めて効果的であることを確認した。
And, as a screw that fits more effectively with the driver bit having the above-described configuration, the screw neck at a predetermined inclination angle from the opening of the screw head to the bottom of the required depth based on the JIS standard or the JIS standard. In a screw having a bit fitting groove formed by forming a cruciform groove extending in the center direction, the cruciform groove of the bit fitting groove has a screw head opening at the JIS standard or JIS standard. The size is set slightly larger than the dimension M, and is configured to extend from the opening to the bottom of the required depth toward the center of the screw neck at a predetermined inclination angle. It has been confirmed that it is extremely effective to use screws each formed with a tapered inner peripheral surface portion that reduces to a G-shape according to the JIS standard or JIS standard at the bottom side portion of the peripheral surface portion.
従って、本発明の目的は、精密ねじ等のねじ頭部に形成する十字形のビット嵌合溝に嵌合するドライバービットの先端刃部として、ねじのビット嵌合溝に対するドライバービットの先端刃部の結合を緊密に行うことができると共に、ねじの取付けおよび取外しを行う際の回転駆動力すなわちトルクの伝達を最も効率良く行うことができ、ねじ締め作業におけるドライバービットのカムアウトの発生を確実に防止し、さらに寸法の異なる複数種類のねじに対してもそれぞれ有効に適用することができるドライバービット及びねじ並びにこれらの組合せを提供することにある。
Accordingly, an object of the present invention is to provide a tip bit portion of a driver bit with respect to a bit fitting groove of a screw as a tip bit portion of a driver bit that fits into a cross-shaped bit fitting groove formed on a screw head such as a precision screw. Can be tightly coupled with each other, and the most efficient transmission of rotational drive force, ie torque, when installing and removing screws, ensuring the prevention of driver bit cam-out during screw tightening operations. It is another object of the present invention to provide a driver bit and a screw that can be effectively applied to a plurality of types of screws having different dimensions, and a combination thereof.
前記の目的を達成するため、本発明の請求項１に記載のドライバービットは、ねじ頭部に設けた十字形のビット嵌合溝に嵌合する十字形刃片からなる先端刃部を備えたドライバービットにおいて、前記先端刃部は、ねじ頭部の開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を備えたねじのビット嵌合溝に対し、前記十字形溝部の各開口外周縁部においてそれぞれクサビ状に結合するように、前記十字形刃片の各半径方向外周縁部とその傾斜角度をそれぞれ設定することを特徴とする。
In order to achieve the above object, a screwdriver bit according to claim 1 of the present invention includes a tip blade portion formed of a cross-shaped blade piece that fits into a cross-shaped bit fitting groove provided on a screw head. In the screwdriver bit, the tip blade portion is a screw bit having a cross-shaped groove portion extending toward the center of the screw neck portion at a predetermined inclination angle from the opening portion of the screw head to the bottom portion of the required depth. The radial outer peripheral edge of the cruciform blade piece and the inclination angle thereof are respectively set so as to be coupled in a wedge shape at the outer peripheral edge of each opening of the cruciform groove with respect to the fitting groove. To do.
本発明の請求項２に記載のドライバービットにおいては、前記先端刃部には、所要の傾斜角度で形成される十字形刃片の各半径方向外周縁部の先端部分において、径寸法を段部状に縮小するテーパ縁部をそれぞれ設けたことを特徴とする。
In the driver bit according to claim 2 of the present invention, the tip edge portion has a stepped diameter at the tip portion of each radially outer peripheral edge of the cross-shaped blade piece formed at a required inclination angle. A taper edge portion that is reduced in a shape is provided.
本発明の請求項３に記載のドライバービットは、前記先端刃部において、十字形刃片のそれぞれ半径方向に延在する刃幅を、半径方向外周縁部に指向して末広がり状に形成し、それぞれ隣接する刃片と刃片との拡開角度が鋭角となるように設定したことを特徴とする
The driver bit according to claim 3 of the present invention, in the tip blade portion, the blade width extending in the radial direction of each of the cruciform blade pieces is formed in a divergent shape toward the radially outer peripheral edge portion, Each of the adjacent blade pieces and the blade pieces are set so that the spread angle is an acute angle.
本発明の請求項４に記載のねじは、ねじ頭部の開口部から所要深さの底部までＪＩＳ規格等に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじにおいて、前記ビット嵌合溝の十字形溝部は、ねじ頭部の開口部をＪＩＳ規格等によるＭ寸法より若干拡大設定して、前記開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在するように構成し、この十字形溝部の各傾斜内周面部の底部側部分において、前記ＪＩＳ規格等によるＧ寸法まで段部状に縮小するテーパ内周面部をそれぞれ形成したことを特徴とする。
The screw according to claim 4 of the present invention extends from the opening of the screw head to the bottom of the required depth in the direction of the center of the screw neck at a predetermined inclination angle based on JIS standards and the like. In a screw having a bit fitting groove formed with a letter-shaped groove, the cross-shaped groove of the bit fitting groove has an opening at a screw head slightly larger than the M dimension according to JIS standards, etc. It is constructed so as to extend in the direction of the center of the screw neck portion at a predetermined inclination angle from the bottom portion to the bottom portion of the required depth, and at the bottom side portion of each inclined inner peripheral surface portion of the cross-shaped groove portion, the JIS standard A taper inner peripheral surface portion that is reduced in a stepped shape to a G dimension by the above method is formed.
本発明の請求項５に記載のねじは、前記ビット嵌合溝の十字形溝部において、それぞれ半径方向に延在し対向する側壁面によって形成される溝幅を、各傾斜内周面部に指向して末広がり状に設定し、前記各十字形溝部の隣接する側壁面と側壁面の離間角度が鋭角となるように設定したことを特徴とする。
According to a fifth aspect of the present invention, in the cross-shaped groove portion of the bit fitting groove, the groove width formed by the opposite side wall surfaces extending in the radial direction is directed to each inclined inner peripheral surface portion. It is characterized in that it is set in a divergent shape, and the separation angle between the adjacent side wall surfaces and the side wall surfaces of each cruciform groove is set to an acute angle.
本発明の請求項６に記載のドライバービットとねじの組合せは、ねじ頭部に設けた十字形のビット嵌合溝に嵌合する十字形刃片からなる先端刃部を備えたドライバービットにおいて、前記先端刃部は、ねじ頭部の開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を備えたねじのビット嵌合溝に対し、前記十字形溝部の各開口外周縁部とそれぞれクサビ状に結合するように、前記十字形刃片の各半径方向外周縁部とその傾斜角度をそれぞれ設定してなるドライバービットと、
ねじ頭部の開口部から所要深さの底部までＪＩＳ規格等に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじにおいて、前記ビット嵌合溝の十字形溝部は、ねじ頭部の開口部をＪＩＳ規格等によるＭ寸法より若干拡大設定して、前記開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在するように構成し、この十字形溝部の各傾斜内周面部の底部側部分において、前記ＪＩＳ規格等によるＧ寸法まで段部状に縮小するテーパ内周面部をそれぞれ形成したねじと、を組み合わせたことを特徴とする。 The combination of the screwdriver bit and the screw according to claim 6 of the present invention is a screwdriver bit having a tip blade portion made of a cross-shaped blade piece fitted into a cross-shaped bit fitting groove provided on a screw head. The tip blade portion is a bit fitting groove of a screw provided with a cross-shaped groove portion extending toward the center of the screw neck portion at a predetermined inclination angle from the opening portion of the screw head to the bottom portion of the required depth. On the other hand, a driver bit formed by setting each radial outer peripheral edge of the cross-shaped blade piece and its inclination angle so as to be coupled in a wedge shape with each opening outer peripheral edge of the cruciform groove,
A bit fitting groove formed by forming a cross-shaped groove extending from the opening of the screw head to the bottom of the required depth in the direction of the center of the screw neck at a predetermined inclination angle based on JIS standards and the like. In the provided screw, the cross-shaped groove of the bit fitting groove has a predetermined inclination angle from the opening to the bottom of the required depth by setting the opening of the screw head to be slightly larger than the dimension M according to JIS standards and the like. The taper is configured to extend toward the center of the screw neck, and at the bottom side portion of each inclined inner peripheral surface portion of the cruciform groove portion, the taper is reduced in a stepped shape to the G dimension according to the JIS standard or the like. The present invention is characterized by combining screws each having an inner peripheral surface portion.
ねじ頭部の開口部から所要深さの底部までＪＩＳ規格等に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじにおいて、前記ビット嵌合溝の十字形溝部は、ねじ頭部の開口部をＪＩＳ規格等によるＭ寸法より若干拡大設定して、前記開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在するように構成し、この十字形溝部の各傾斜内周面部の底部側部分において、前記ＪＩＳ規格等によるＧ寸法まで段部状に縮小するテーパ内周面部をそれぞれ形成したねじと、を組み合わせたことを特徴とする。 The combination of the screwdriver bit and the screw according to claim 6 of the present invention is a screwdriver bit having a tip blade portion made of a cross-shaped blade piece fitted into a cross-shaped bit fitting groove provided on a screw head. The tip blade portion is a bit fitting groove of a screw provided with a cross-shaped groove portion extending toward the center of the screw neck portion at a predetermined inclination angle from the opening portion of the screw head to the bottom portion of the required depth. On the other hand, a driver bit formed by setting each radial outer peripheral edge of the cross-shaped blade piece and its inclination angle so as to be coupled in a wedge shape with each opening outer peripheral edge of the cruciform groove,
A bit fitting groove formed by forming a cross-shaped groove extending from the opening of the screw head to the bottom of the required depth in the direction of the center of the screw neck at a predetermined inclination angle based on JIS standards and the like. In the provided screw, the cross-shaped groove of the bit fitting groove has a predetermined inclination angle from the opening to the bottom of the required depth by setting the opening of the screw head to be slightly larger than the dimension M according to JIS standards and the like. The taper is configured to extend toward the center of the screw neck, and at the bottom side portion of each inclined inner peripheral surface portion of the cruciform groove portion, the taper is reduced in a stepped shape to the G dimension according to the JIS standard or the like. The present invention is characterized by combining screws each having an inner peripheral surface portion.
本発明の請求項１に記載のドライバービットによれば、精密ねじ等のねじ頭部に形成する十字形のビット嵌合溝に嵌合するドライバービットの先端刃部として、ねじのビット嵌合溝に対するドライバービットの先端刃部の結合を緊密に行うことができると共に、ねじの取付けおよび取外しを行う際の回転駆動力すなわちトルクの伝達を最も効率良く行うことができ、ねじ締め作業におけるドライバービットのカムアウトの発生を確実に防止し、さらに寸法の異なる複数種類のねじに対してもそれぞれ有効に適用することができる。
According to the driver bit of the first aspect of the present invention, the screw bit fitting groove of the screw is used as the tip blade portion of the driver bit fitted into the cross-shaped bit fitting groove formed on the screw head such as a precision screw. The tip of the screwdriver bit can be tightly coupled to the screwdriver, and the rotational drive force, i.e. torque, can be transmitted most efficiently when attaching and removing the screw. It is possible to reliably prevent the occurrence of a cam-out and effectively apply to a plurality of types of screws having different dimensions.
このように、本発明に係るドライバービットは、ねじのビット嵌合溝との結合に際し、その当初の結合において、従来のようなビット嵌合溝の側壁部との当接すなわち駆動面との結合とは異なるものであって、十字形溝部の各開口外周縁部においてそれぞれクサビ状に結合する緊密な結合を行うものであることから、ねじの取付けに際してのねじ締め作業において、従来のようなビット嵌合溝の破損やカムアウトの発生を確実に防止することができると共に、従来のドライバービットを使用してビット嵌合溝の破損したねじの取外し作業に対しても、容易かつ確実に行うことができる。
As described above, when the screwdriver bit according to the present invention is connected to the bit fitting groove of the screw, it is in contact with the side wall portion of the bit fitting groove as in the prior art, that is, to the driving surface. In the screw tightening operation when mounting the screw, a bit like the conventional one is used. Breakage of the fitting groove and occurrence of cam-out can be reliably prevented, and the conventional screwdriver bit can be used to easily and reliably remove the broken screw of the bit fitting groove. it can.
本発明の請求項２記載のドライバービットによれば、寸法の異なる複数種類のねじに対して、それぞれねじのビット嵌合溝に対するドライバービットの先端刃部の結合を緊密に行うこと、すなわちガタツキのない安定した結合をすることができる。特に、寸法の小さな精密ねじ等の場合において、その結合に際しての安定化に有効である。
According to the driver bit of the second aspect of the present invention, for the plurality of types of screws having different dimensions, the tip bit portion of the driver bit is closely coupled to the bit fitting groove of each screw, that is, the rattling There can be no stable bond. In particular, in the case of a precision screw having a small size, it is effective for stabilization at the time of coupling.
本発明の請求項３記載のドライバービットによれば、ねじのビット嵌合溝に対するドライバービットの先端刃部の結合を緊密に行うことができると共に、ねじの取付けおよび取外しを行う際の回転駆動力すなわちトルクの伝達を最も効率良く行うことができる。
According to the driver bit of the third aspect of the present invention, the tip edge portion of the driver bit can be tightly coupled to the bit fitting groove of the screw, and the rotational driving force when attaching and detaching the screw. That is, torque can be transmitted most efficiently.
本発明の請求項４および５に記載のねじ、並びに請求項６に記載のドライバービットとねじとの組合せによれば、前述したねじのビット嵌合溝に対するドライバービットの先端刃部の結合をより緊密に行うことができると共に、ねじの取付けおよび取外しを行う際の回転駆動力すなわちトルクの伝達を最も効率良く行うことができ、ねじ締め作業におけるドライバービットのカムアウトの発生を確実に防止し、寸法の異なる複数種類のねじに対してもそれぞれ有効に適用することができる等の作用および効果を、より確実なものとすることができる。
According to the screw according to claims 4 and 5 of the present invention and the combination of the driver bit and the screw according to claim 6, it is possible to further connect the tip edge portion of the driver bit to the bit fitting groove of the screw. In addition to being able to perform tightly, the most efficient transmission of rotational driving force, that is, torque, when installing and removing screws, ensures the prevention of cam bit out of the driver bit during screw tightening, and dimensions The actions and effects that can be effectively applied to a plurality of different types of screws can be further ensured.
次に、本発明に係るドライバービット及びねじ並びにこれらの組合せの実施例につき、添付図面を参照しながら以下詳細に説明する。
Next, embodiments of the driver bit and screw according to the present invention and combinations thereof will be described in detail below with reference to the accompanying drawings.
図１および図２は、本発明に係るドライバービットの一実施例を示すものであり、図１は先端刃部の概略側面図、図２は先端刃部の先端面の概略平面図である。すなわち、図１において、参照符号１０はねじ頭部に設けた十字形のビット嵌合溝に嵌合する十字形刃片からなる先端刃部を備えたドライバービットである。このドライバービット１０の先端刃部１２は、ねじ頭部の開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を備えたねじのビット嵌合溝に対し、前記十字形溝部の各開口外周縁部においてそれぞれクサビ状に結合するように、前記十字形刃片１４の各半径方向外周縁部１４ａとその傾斜角度θ（例えば、２６°０′）をそれぞれ設定したものである。
1 and 2 show an embodiment of a driver bit according to the present invention. FIG. 1 is a schematic side view of a tip blade portion, and FIG. 2 is a schematic plan view of a tip surface of the tip blade portion. That is, in FIG. 1, reference numeral 10 denotes a driver bit having a tip blade portion made of a cruciform blade piece fitted in a cruciform bit fitting groove provided in the screw head. The tip edge portion 12 of the driver bit 10 is a screw provided with a cross-shaped groove portion extending in the direction of the center of the screw neck portion at a predetermined inclination angle from the opening portion of the screw head to the bottom portion of the required depth. The radially outer peripheral edge portion 14a of the cruciform blade piece 14 and its inclination angle θ (for example, 26) so as to be coupled to the bit fitting groove in a wedge shape at each outer peripheral edge portion of the opening of the cruciform groove portion. ° 0 ') is set for each.
この場合、ドライバービット１０の先端刃部１２は、前記傾斜角度θで形成される十字形刃片１４の各半径方向外周縁部１４ａの先端部分において、径寸法を段部状に縮小するテーパ縁部１５をそれぞれ設けた構成とすることができる。従って、前記先端刃部１２は、前記テーパ縁部１５より先端部分においても、前記傾斜角度θと同じ傾斜角度の外周縁部１６ａからなる延長十字形刃片１６が形成される。そして、前記十字形刃片１４の各刃片が交差する前記先端刃部１２の先端中心部は、所要の円錐突部１８として形成される。なお、図１において、破線で示す部分は、従来の十字形刃片を有するプラスドライバービットの先端刃部の外形を示すものである。
In this case, the tip edge portion 12 of the driver bit 10 has a tapered edge that reduces the diameter in a step shape at the tip portion of each radially outer peripheral edge portion 14a of the cross-shaped blade piece 14 formed at the inclination angle θ. It can be set as the structure which provided the part 15, respectively. Therefore, the tip blade portion 12 is formed with an extended cross-shaped blade piece 16 composed of the outer peripheral edge portion 16a having the same inclination angle as the inclination angle θ at the tip portion from the tapered edge portion 15. The center of the tip of the tip blade 12 where the blades of the cruciform blade 14 intersect is formed as a required conical protrusion 18. In addition, in FIG. 1, the part shown with a broken line shows the external shape of the front-end | tip blade part of the plus screwdriver bit which has the conventional cross-shaped blade piece.
また、本実施例のドライバービット１０の先端刃部１２においては、前記十字形刃片１４のそれぞれ半径方向に延在する刃幅ｗを、半径方向外周縁部１４ａ、１６ａに指向して末広がり状に形成し、それぞれ隣接する刃片１４と刃片１４との拡開角度β′が鋭角となるように設定した構成とすることができる。
Moreover, in the front-end | tip blade part 12 of the driver bit 10 of a present Example, the blade width w which each extends in the radial direction of the said cross-shaped blade piece 14 is directed toward the radial direction outer peripheral edge parts 14a and 16a, and is a divergent shape. And the spread angle β ′ between the adjacent blade pieces 14 and 14 is set to be an acute angle.
このように構成される本実施例におけるドライバービット１０は、これを所要寸法からなる既存のねじ３０のビット嵌合溝３２に嵌合すれば、図３および図４に示すようになる。すなわち、図３および図４において、ねじ３０のビット嵌合溝３２は、ねじ頭部３０ａの開口部３３から所要深さの底部までＪＩＳ規格やＪＣＩＳ規格に基づいて所定の傾斜角度θでねじ頸部３０ｂの中心方向に指向して延在する十字形溝部３４を形成している。そこで、図３においては、ドライバービット１０の先端刃部１２が、ねじ頭部３０ａの開口部３３から所要深さの底部まで所定の傾斜角度θでねじ頸部３０ｂの中心方向に指向して延在する十字形溝部３４を備えたねじ３０のビット嵌合溝３２に対し、前記十字形刃片１４の半径方向外周縁部１４ａを、前記十字形溝部３４の各開口外周縁部３３ａにおいてそれぞれクサビ状に結合することができる。
If the driver bit 10 in the present embodiment configured as described above is fitted into the bit fitting groove 32 of the existing screw 30 having the required dimensions, the result is as shown in FIGS. That is, in FIG. 3 and FIG. 4, the bit fitting groove 32 of the screw 30 is screw neck with a predetermined inclination angle θ based on the JIS standard or the JIS standard from the opening 33 of the screw head 30a to the bottom of the required depth. A cross-shaped groove 34 extending in the direction of the center of the portion 30b is formed. Therefore, in FIG. 3, the tip blade portion 12 of the driver bit 10 extends in the direction of the center of the screw neck portion 30b from the opening 33 of the screw head portion 30a to the bottom portion of the required depth at a predetermined inclination angle θ. For the bit fitting groove 32 of the screw 30 having the existing cross-shaped groove portion 34, the radially outer peripheral edge portion 14 a of the cross-shaped blade piece 14 is wedged at each opening outer peripheral edge portion 33 a of the cross-shaped groove portion 34. Can be combined.
この場合、図３および図４に示すように、ドライバービット１０の先端刃部１２の前記ねじ３０のビット嵌合溝３２に嵌合する十字形刃片１４の半径方向外周縁部１４ａが、前記十字形溝部３４の各開口外周縁部３３ａにおいてそれぞれクサビ状に結合して、ドライバービット１０からねじ３０へのトルク伝達を有効に行うことができる。従って、このようなトルク伝達によって、従来のこの種のねじ３０において、ドライバービットの先端刃部との嵌合に際して、ビット嵌合溝３２の駆動面とされていた十字形溝部３４のそれぞれ対向する側壁面３４ｂ、３４ｃには、その当初の結合において前記ドライバービット１０の先端刃部１２が当接する必要はない。このようにドライバービット１０の先端刃部１２が、ねじ３０のビット嵌合溝３２に緊密に嵌合することにより、ドライバービット１０からねじ３０へのトルク伝達は有効に行われ、ねじ３０の円滑かつ適正な取付けおよび取外し作業を確実に達成することができる。
In this case, as shown in FIGS. 3 and 4, the radially outer peripheral edge portion 14a of the cruciform blade piece 14 fitted in the bit fitting groove 32 of the screw 30 of the tip blade portion 12 of the driver bit 10 is Torque transmission from the driver bit 10 to the screw 30 can be effectively performed by coupling in a wedge shape at each outer peripheral edge portion 33a of the cross-shaped groove portion 34a. Therefore, by such torque transmission, when this type of conventional screw 30 is fitted to the tip edge portion of the driver bit, the cruciform groove portion 34 which has been the driving surface of the bit fitting groove 32 faces each other. It is not necessary for the tip edge 12 of the driver bit 10 to abut the side wall surfaces 34b and 34c in the initial coupling. As described above, when the tip edge portion 12 of the driver bit 10 is closely fitted in the bit fitting groove 32 of the screw 30, torque transmission from the driver bit 10 to the screw 30 is effectively performed, and the screw 30 is smooth. And proper installation and removal work can be achieved reliably.
なお、本実施例に係るドライバービット１０によれば、例えばねじ締めが完了する時点において、その負荷抵抗が上昇して先端刃部１２に多大の応力が掛かり、先端刃部１２が捻られた場合に、十字形刃片１４の半径方向外周縁部１４ａ近傍の側面が、ビット嵌合溝３２の十字形溝部３４の各開口外周縁部３３ａおよび傾斜内周面部３４ａ近傍の側壁面３４ｃに当接して、トルク伝達をより有効なものとすることができる。
According to the driver bit 10 according to the present embodiment, for example, when the screw tightening is completed, when the load resistance is increased and a large amount of stress is applied to the tip blade portion 12, and the tip blade portion 12 is twisted. Further, the side surface in the vicinity of the outer peripheral edge portion 14a in the radial direction of the cruciform blade piece 14 abuts on each outer peripheral edge portion 33a of the cross-shaped groove portion 34 of the bit fitting groove 32 and the side wall surface 34c in the vicinity of the inclined inner peripheral surface portion 34a. Thus, torque transmission can be made more effective.
また、本実施例におけるドライバービットは、これを比較的小寸法からなる既存のねじのビット嵌合溝に対しても、ドライバービット１０からねじへのトルク伝達を有効に行うことができるように嵌合することができる。すなわち、図５に示すように、ドライバービット１０の先端刃部１２と比較して、小さい寸法からなる既存のねじ３０′のビット嵌合溝３２′に対し、本実施例のドライバービット１０を使用する場合、図示のように、十字形刃片１４の比較的先端部分が、ねじ頭部３０ａ′の開口部３３′から所要深さの十字形溝部３４′内に嵌合し、前記十字形刃片１４の半径方向外周縁部１４ａを、前記十字形溝部３４′の各開口外周縁部３３ａ′においてそれぞれクサビ状の結合を達成することができる。この場合、本実施例のドライバービット１０は、図示のように、テーパ縁部１５より先端部分に形成される延長十字形刃片１６が、ねじ３０′のビット嵌合溝３２′内に深く侵入して、緊密な結合が達成され、先端刃部１２のカムアウトを防止することができる。
Further, the driver bit in the present embodiment is fitted so that torque can be effectively transmitted from the driver bit 10 to the screw even in the bit fitting groove of an existing screw having a relatively small size. Can be combined. That is, as shown in FIG. 5, the driver bit 10 of this embodiment is used for the bit fitting groove 32 ′ of the existing screw 30 ′ having a small size as compared with the tip blade portion 12 of the driver bit 10. In this case, as shown in the drawing, the relatively distal end portion of the cruciform blade piece 14 is fitted into the cruciform groove portion 34 ′ having a required depth from the opening 33 ′ of the screw head 30 a ′. It is possible to achieve a wedge-like connection between the radially outer peripheral edge portion 14a of the piece 14 at each of the opening outer peripheral edge portions 33a 'of the cross-shaped groove 34'. In this case, in the driver bit 10 of this embodiment, as shown in the figure, the extended cross-shaped blade piece 16 formed at the tip portion from the taper edge 15 penetrates deeply into the bit fitting groove 32 'of the screw 30'. As a result, a tight coupling is achieved, and cam-out of the tip blade portion 12 can be prevented.
図６および図７は、本発明に係るねじの一実施例を示すものであり、図４はねじ頭部の概略側面断面図、図５はねじ頭部の概略平面図である。すなわち、図４において、参照符号２０はねじ頭部の開口部から所要深さの底部までＪＩＳ規格やＪＣＩＳ規格に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじである。このねじ２０の前記ビット嵌合溝２２の十字形溝部２４は、ねじ頭部２０ａの開口部２３をＪＩＳ規格やＪＣＩＳ規格によるＭ寸法より若干拡大設定（Ｍ′）して、前記開口部２３から所要深さの底部まで所定の傾斜角度γ（例えば、２６°０′）でねじ頸部２０ｂの中心方向に指向して延在するように構成し、この十字形溝部２４の各傾斜内周面部２４ａの底部側部分において、前記ＪＩＳ規格やＪＣＩＳ規格によるＧ寸法まで段部状に縮小するテーパ内周面部２５をそれぞれ形成したものである。
6 and 7 show one embodiment of the screw according to the present invention, FIG. 4 is a schematic side sectional view of the screw head, and FIG. 5 is a schematic plan view of the screw head. That is, in FIG. 4, reference numeral 20 extends from the opening of the screw head to the bottom of the required depth in a direction toward the center of the screw neck at a predetermined inclination angle based on the JIS standard or JIS standard. It is a screw provided with a bit fitting groove formed by forming a letter-shaped groove. The cross-shaped groove portion 24 of the bit fitting groove 22 of the screw 20 is set so that the opening portion 23 of the screw head portion 20a is slightly enlarged (M ′) from the M size according to the JIS standard or the JIS standard. Each inclined inner peripheral surface portion of the cruciform groove portion 24 is configured to extend toward the center of the screw neck portion 20b at a predetermined inclination angle γ (for example, 26 ° 0 ′) to the bottom portion of a required depth. In the bottom side portion of 24a, a taper inner peripheral surface portion 25 that is reduced to a G-shape according to the JIS standard or JIS standard is formed.
この場合、前記ビット嵌合溝２２の十字形溝部２４は、前記テーパ内周面部２５より先端部分においても、前記傾斜角度γと同じ傾斜角度γの内周面部２６ａからなる延長十字形溝部２６が形成される。そして、前記十字形溝部２６の各溝部が交差する前記ビット嵌合溝２２の先端中心部は、所要の円錐底部２８として形成される。なお、図６において、破線で示す部分は、従来の十字形溝部を有するプラスねじのビット嵌合溝の形状を示すものである。
In this case, the cross-shaped groove portion 24 of the bit fitting groove 22 has an extended cross-shaped groove portion 26 formed of an inner peripheral surface portion 26 a having the same inclination angle γ as the inclination angle γ at the tip end portion than the tapered inner peripheral surface portion 25. It is formed. The central portion of the tip end of the bit fitting groove 22 where each groove portion of the cross-shaped groove portion 26 intersects is formed as a required conical bottom portion 28. In addition, in FIG. 6, the part shown with a broken line shows the shape of the bit fitting groove | channel of the conventional Phillips screw which has a cross-shaped groove part.
また、前記ビット嵌合溝２２の十字形溝部２４は、それぞれ半径方向に延在し対向する側壁面２４ｂ、２４ｃによって形成される溝幅ｗ′を、各傾斜内周面部２４ａに指向して末広がり状に設定し、前記各十字形溝部２４の隣接する側壁面２４ｃと側壁面２４ｂとの離間角度α′が鋭角となるように設定した構成とすることができる。
Further, the cross-shaped groove portion 24 of the bit fitting groove 22 has a groove width w ′ formed by the opposing side wall surfaces 24b and 24c extending in the radial direction and extending toward the respective inclined inner peripheral surface portions 24a. It is possible to adopt a configuration in which the spacing angle α ′ between the adjacent side wall surface 24c and the side wall surface 24b of each cruciform groove 24 is set to an acute angle.
このように構成される本実施例におけるねじ２０は、これを本発明に係る前記実施例のドライバービット１０を使用して、前記ねじ２０のビット嵌合溝２２に嵌合すれば、図８および図９に示すようになる。すなわち、図８および図９において、ドライバービット１０の先端刃部１２は、ねじ２０のビット嵌合溝２２に形成された前記開口部２３から所要深さの底部まで所定の傾斜角度γでねじ頸部２０ｂの中心方向に指向して延在する十字形溝部２４に対し、各傾斜内周面部２４ａ、テーパ内周面部２５、延長十字形溝部２６とその内周面部２６ａおよび円錐底部２８の形状に、前記先端刃部１２の十字形刃片１４における半径方向外周縁部１４ａ、テーパ縁部１５、延長十字形刃片１６とその外周縁部１６ａおよび円錐突部１８の形状が、それぞれ図示のように適合して、ドライバービット１０からねじ２０へのトルク伝達を適正かつ有効に行うことができるように嵌合することができる。
If the screw 20 in this embodiment configured as described above is fitted into the bit fitting groove 22 of the screw 20 using the driver bit 10 of the embodiment according to the present invention, FIG. As shown in FIG. That is, in FIG. 8 and FIG. 9, the tip blade portion 12 of the driver bit 10 is screw neck with a predetermined inclination angle γ from the opening portion 23 formed in the bit fitting groove 22 of the screw 20 to the bottom portion of the required depth. With respect to the cross-shaped groove portion 24 extending toward the center of the portion 20b, the inclined inner peripheral surface portion 24a, the tapered inner peripheral surface portion 25, the extended cross-shaped groove portion 26, the inner peripheral surface portion 26a, and the conical bottom portion 28 are formed. The shapes of the radially outer peripheral edge 14a, the tapered edge 15, the extended cross-shaped blade 16 and the outer peripheral edge 16a and the conical protrusion 18 of the cross-shaped blade 14 of the tip blade 12 are as shown in the figure. And can be fitted so that torque transmission from the driver bit 10 to the screw 20 can be performed appropriately and effectively.
本実施例によるドライバービット１０とねじ２０との組合せによれば、ドライバービット１０の先端刃部１２を、ねじ２０のビット嵌合溝２２へ嵌合させる場合において、前記先端刃部１２の十字形刃片１４の半径方向外周縁部１４ａを、前記ビット嵌合溝２２の十字形溝部３４の各開口外周縁部３３ａにおいてそれぞれクサビ状に緊密に結合することができるばかりでなく、前記十字形溝部３４のそれぞれ半径方向に延在して対向する側壁面２４ｂ、２４ｃに対して、前記十字形刃片１４の外側面をそれぞれ適正に当接するように設定することができる。これにより、ドライバービット１０からねじ２０へのトルク伝達をより効果的に行うことが可能となる。
According to the combination of the driver bit 10 and the screw 20 according to the present embodiment, when the tip blade portion 12 of the driver bit 10 is fitted into the bit fitting groove 22 of the screw 20, the cross shape of the tip blade portion 12 is. The outer peripheral edge portion 14a in the radial direction of the blade piece 14 can be tightly coupled in a wedge shape at each of the outer peripheral edge portions 33a of the cross-shaped groove portion 34 of the bit fitting groove 22 as well as the cross-shaped groove portion. It is possible to set the outer side surfaces of the cross-shaped blade pieces 14 to be in proper contact with the side wall surfaces 24b and 24c extending in the radial direction and facing each other. Thereby, torque transmission from the driver bit 10 to the screw 20 can be performed more effectively.
以上、本発明の好適な実施例について説明したが、本発明は前述した実施例に限定されることなく、各種の精密ねじは勿論のこと、一般的に使用される各種のなべねじや皿ねじ等の広範囲に亘って応用することが可能であり、その他本発明の精神を逸脱しない範囲内において多くの設計変更を行うこともできる。
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various kinds of pan screws and countersunk screws which are generally used as well as various precision screws. The present invention can be applied over a wide range, and many design changes can be made without departing from the spirit of the present invention.
１０ ドライバービット
１２ 先端刃部
１４ 十字形刃片
１４ａ 外周縁部
１５ テーパ縁部
１６ 延長十字形刃片
１６ａ 外周縁部
１８ 円錐突部
２０ ねじ
２０ａ ねじ頭部
２０ｂ ねじ頸部
２２ ビット嵌合溝
２３ 開口部
２３ａ 開口外周縁部
２４ 十字形溝部
２４ａ 傾斜内周面部
２４ｂ，２４ｃ 側壁面
２５ テーパ内周面部
２６ 延長十字形溝部
２６ａ 傾斜内周面部
２８ 円錐底部
３０、３０′ 既存のねじ
３０ａ、３０ａ′ ねじ頭部
３０ｂ、３０ｂ′ ねじ頸部
３２、３２′ ビット嵌合溝
３３、３３′ 開口部
３３ａ、３３ａ′ 開口外周縁部
３４、３４′ 十字形溝部
３４ａ、３４ａ′ 傾斜内周面部
３４ｂ、３４ｃ 側壁面
３８、３８′ 円錐底部
θ 傾斜角度（十字形刃片１４の）
β′ 拡開角度（十字形刃片１４の）
γ 傾斜角度（十字形溝部２４の）
α′ 離間角度（十字形溝部２４の）
ｗ 刃幅
ｗ′ 溝幅 DESCRIPTION OFSYMBOLS 10 Driver bit 12 Tip edge part 14 Cross-shaped blade piece 14a Outer peripheral edge part 15 Tapered edge part 16 Extended cross-shaped blade piece 16a Outer peripheral edge part 18 Conical protrusion 20 Screw 20a Screw head 20b Screw neck part 22 Bit fitting groove 23 Opening 23a Opening outer peripheral edge 24 Cross-shaped groove 24a Inclined inner peripheral surface 24b, 24c Side wall surface 25 Taper inner peripheral surface 26 Extended cross-shaped groove 26a Inclined inner peripheral surface 28 Conical bottom 30, 30 'Existing screws 30a, 30a' Screw head 30b, 30b 'Screw neck 32, 32' Bit fitting groove 33, 33 ' Opening 33a, 33a' Opening outer peripheral edge 34, 34 ' Cross-shaped groove 34a, 34a' Inclined inner peripheral surface 34b, 34c Side wall surface 38, 38 'Conical bottom portion θ Inclination angle (of cross-shaped blade 14)
β ′ widening angle (of cross-shaped blade 14)
γ Inclination angle (of cross-shaped groove 24)
α 'spacing angle (of cross-shaped groove 24)
w Blade width w 'Groove width
１２ 先端刃部
１４ 十字形刃片
１４ａ 外周縁部
１５ テーパ縁部
１６ 延長十字形刃片
１６ａ 外周縁部
１８ 円錐突部
２０ ねじ
２０ａ ねじ頭部
２０ｂ ねじ頸部
２２ ビット嵌合溝
２３ 開口部
２３ａ 開口外周縁部
２４ 十字形溝部
２４ａ 傾斜内周面部
２４ｂ，２４ｃ 側壁面
２５ テーパ内周面部
２６ 延長十字形溝部
２６ａ 傾斜内周面部
２８ 円錐底部
３０、３０′ 既存のねじ
３０ａ、３０ａ′ ねじ頭部
３０ｂ、３０ｂ′ ねじ頸部
３２、３２′ ビット嵌合溝
３３、３３′ 開口部
３３ａ、３３ａ′ 開口外周縁部
３４、３４′ 十字形溝部
３４ａ、３４ａ′ 傾斜内周面部
３４ｂ、３４ｃ 側壁面
３８、３８′ 円錐底部
θ 傾斜角度（十字形刃片１４の）
β′ 拡開角度（十字形刃片１４の）
γ 傾斜角度（十字形溝部２４の）
α′ 離間角度（十字形溝部２４の）
ｗ 刃幅
ｗ′ 溝幅 DESCRIPTION OF
β ′ widening angle (of cross-shaped blade 14)
γ Inclination angle (of cross-shaped groove 24)
α 'spacing angle (of cross-shaped groove 24)
w Blade width w 'Groove width
Claims (6)
- ねじ頭部に設けた十字形のビット嵌合溝に嵌合する十字形刃片からなる先端刃部を備えたドライバービットにおいて、
前記先端刃部は、ねじ頭部の開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を備えたねじのビット嵌合溝に対し、前記十字形溝部の各開口外周縁部においてそれぞれクサビ状に結合するように、前記十字形刃片の各半径方向外周縁部とその傾斜角度をそれぞれ設定することを特徴とするドライバービット。 In a driver bit having a tip blade portion made of a cruciform blade piece fitted into a cruciform bit fitting groove provided on the screw head,
The tip blade portion is a bit fitting groove of a screw provided with a cross-shaped groove portion extending toward the center of the screw neck portion at a predetermined inclination angle from the opening portion of the screw head to the bottom portion of the required depth. On the other hand, the radial outer peripheral edge of the cruciform blade piece and the inclination angle thereof are respectively set so as to be coupled in a wedge shape at the outer peripheral edge of each opening of the cruciform groove. - 前記先端刃部は、所要の傾斜角度で形成される十字形刃片の各半径方向外周縁部の先端部分において、径寸法を段部状に縮小するテーパ縁部をそれぞれ設けたことを特徴とする請求項１記載のドライバービット。 The tip blade portion is provided with a tapered edge portion that reduces the diameter in a step shape at the tip portion of each radially outer peripheral edge of the cross-shaped blade piece formed at a required inclination angle. The driver bit according to claim 1.
- 前記先端刃部は、十字形刃片のそれぞれ半径方向に延在する刃幅を、半径方向外周縁部に指向して末広がり状に形成し、それぞれ隣接する刃片と刃片との拡開角度が鋭角となるように設定したことを特徴とする請求項１または２記載のドライバービット。 The tip blade portion is formed so that the blade width extending in the radial direction of each of the cross-shaped blade pieces is widened toward the outer peripheral edge portion in the radial direction, and the spread angle between the adjacent blade pieces and the blade pieces is respectively The driver bit according to claim 1, wherein the driver bit is set to have an acute angle.
- ねじ頭部の開口部から所要深さの底部までＪＩＳ規格等に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじにおいて、
前記ビット嵌合溝の十字形溝部は、ねじ頭部の開口部をＪＩＳ規格等によるＭ寸法より若干拡大設定して、前記開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在するように構成し、
この十字形溝部の各傾斜内周面部の底部側部分において、前記ＪＩＳ規格等によるＧ寸法まで段部状に縮小するテーパ内周面部をそれぞれ形成したことを特徴とするねじ。 A bit fitting groove formed by forming a cross-shaped groove extending from the opening of the screw head to the bottom of the required depth in the direction of the center of the screw neck at a predetermined inclination angle based on JIS standards and the like. In the provided screw,
The cruciform groove of the bit fitting groove has an opening at the screw head slightly larger than the M dimension according to JIS standards and the like, and the screw neck portion has a predetermined inclination angle from the opening to the bottom of the required depth. Configured to extend in the center direction,
A screw characterized in that a taper inner peripheral surface portion that reduces in a stepped shape to a G dimension according to the JIS standard or the like is formed at a bottom side portion of each inclined inner peripheral surface portion of the cross-shaped groove portion. - 前記ビット嵌合溝の十字形溝部は、それぞれ半径方向に延在し対向する側壁面によって形成される溝幅を、各傾斜内周面部に指向して末広がり状に設定し、前記各十字形溝部の隣接する側壁面と側壁面の離間角度が鋭角となるように設定したことを特徴とする請求項４記載のねじ。 The cross-shaped groove portion of the bit fitting groove is configured such that the groove width formed by the opposing side wall surfaces extending in the radial direction is widened toward the respective inclined inner peripheral surface portions, and each of the cross-shaped groove portions 5. The screw according to claim 4, wherein a spacing angle between the adjacent side wall surfaces and the side wall surfaces is set to an acute angle.
- ねじ頭部に設けた十字形のビット嵌合溝に嵌合する十字形刃片からなる先端刃部を備えたドライバービットにおいて、前記先端刃部は、ねじ頭部の開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を備えたねじのビット嵌合溝に対し、前記十字形溝部の各開口外周縁部とそれぞれクサビ状に結合するように、前記十字形刃片の各半径方向外周縁部とその傾斜角度をそれぞれ設定することを特徴とするドライバービットと、
ねじ頭部の開口部から所要深さの底部までＪＩＳ規格等に基づいて所定の傾斜角度でねじ頸部の中心方向に指向して延在する十字形溝部を形成してなるビット嵌合溝を備えたねじにおいて、前記ビット嵌合溝の十字形溝部は、ねじ頭部の開口部をＪＩＳ規格等によるＭ寸法より若干拡大設定して、前記開口部から所要深さの底部まで所定の傾斜角度でねじ頸部の中心方向に指向して延在するように構成し、この十字形溝部の各傾斜内周面部の底部側部分において、前記ＪＩＳ規格等によるＧ寸法まで段部状に縮小するテーパ内周面部をそれぞれ形成したことを特徴とするねじと、の組合せ。 In a screwdriver bit having a tip blade portion made of a cruciform blade piece fitted in a cruciform bit fitting groove provided on a screw head, the tip blade portion has a required depth from the opening of the screw head. In relation to the bit fitting groove of the screw having a cross-shaped groove portion extending toward the center of the screw neck portion at a predetermined inclination angle to the bottom portion, each opening outer peripheral edge portion of the cross-shaped groove portion has a wedge shape. A screwdriver bit characterized by setting each radial outer peripheral edge of the cruciform blade piece and its inclination angle so as to be coupled;
A bit fitting groove formed by forming a cross-shaped groove extending from the opening of the screw head to the bottom of the required depth in the direction of the center of the screw neck at a predetermined inclination angle based on JIS standards and the like. In the provided screw, the cross-shaped groove portion of the bit fitting groove has a predetermined inclination angle from the opening portion to the bottom portion of the required depth by setting the opening portion of the screw head to be slightly larger than the dimension M according to JIS standard or the like. The taper is configured to extend toward the center of the screw neck, and at the bottom side portion of each inclined inner peripheral surface portion of the cruciform groove portion, the taper is reduced in a stepped shape to the G dimension according to the JIS standard or the like. The combination with the screw characterized by having formed the inner peripheral surface part, respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-219220 | 2008-08-28 | ||
| JP2008219220A JP2010052089A (en) | 2008-08-28 | 2008-08-28 | Screwdriver bit, screw, and combination of those |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010024026A1 true WO2010024026A1 (en) | 2010-03-04 |
Family
ID=41721199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/061600 WO2010024026A1 (en) | 2008-08-28 | 2009-06-25 | Screwdriver bit, screw, and combination thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2010052089A (en) |
| WO (1) | WO2010024026A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI701108B (en) * | 2017-03-23 | 2020-08-11 | 美商葛利普控股公司 | Multi-grip socket bit |
| WO2021230420A1 (en) * | 2020-05-11 | 2021-11-18 | 주식회사 볼츠원 | Bolt having opening |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5662860U (en) * | 1979-10-19 | 1981-05-27 | ||
| JP2000218556A (en) * | 1999-01-29 | 2000-08-08 | Kaneko Seisakusho:Kk | Manufacture of bit for cross-tip screwdriver |
| WO2004065067A1 (en) * | 2003-01-24 | 2004-08-05 | Katsuyuki Totsu | Screw driver bit and combination thereof with screw |
-
2008
- 2008-08-28 JP JP2008219220A patent/JP2010052089A/en not_active Withdrawn
-
2009
- 2009-06-25 WO PCT/JP2009/061600 patent/WO2010024026A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5662860U (en) * | 1979-10-19 | 1981-05-27 | ||
| JP2000218556A (en) * | 1999-01-29 | 2000-08-08 | Kaneko Seisakusho:Kk | Manufacture of bit for cross-tip screwdriver |
| WO2004065067A1 (en) * | 2003-01-24 | 2004-08-05 | Katsuyuki Totsu | Screw driver bit and combination thereof with screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI701108B (en) * | 2017-03-23 | 2020-08-11 | 美商葛利普控股公司 | Multi-grip socket bit |
| WO2021230420A1 (en) * | 2020-05-11 | 2021-11-18 | 주식회사 볼츠원 | Bolt having opening |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010052089A (en) | 2010-03-11 |
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