JPH0825242A - Screw fastening tool - Google Patents
Screw fastening toolInfo
- Publication number
- JPH0825242A JPH0825242A JP19452694A JP19452694A JPH0825242A JP H0825242 A JPH0825242 A JP H0825242A JP 19452694 A JP19452694 A JP 19452694A JP 19452694 A JP19452694 A JP 19452694A JP H0825242 A JPH0825242 A JP H0825242A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- main body
- engaging portion
- permanent magnet
- section
- 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
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、ねじ頭部の駆動穴に係
合する形状に先端が成形された、例えばドライバビット
のようなねじ締め工具に関し、詳しくはねじを強力に吸
着保持するねじ締め工具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw tightening tool such as a driver bit, the tip of which is shaped to engage with a drive hole of a screw head. Regarding tightening tools.
【0002】[0002]
【従来の技術】従来、ねじの締付け用のねじ締め工具と
しては一般にドライバビットが広く知られている。この
ドライバビットは先端が所望ねじの頭部の駆動穴に係合
する形状に成形されており、そこをねじの駆動穴に係合
させてドライバビットを回転させることでねじの締付け
を行うもので、このようなドライバビットは用途に応じ
て極めて多種多様であり、特にねじをドライバビット自
体で保持する点については種々の改良がなされ、数多く
のねじ保持型のドライバビットが実用されている。この
中でも代表的なものは、ドラバビット先端の係合部を磁
石化したものであり、このようなドライバビットは、図
4に示すようにドライバビット50先端のねじ頭部に係
合する係合部51を磁化してねじを保持できるように構
成されている。2. Description of the Related Art Conventionally, a driver bit has been widely known as a screw tightening tool for tightening screws. The tip of this driver bit is shaped so as to engage with the drive hole of the head of the desired screw, and the screw is tightened by engaging it with the drive hole of the screw and rotating the driver bit. There are various kinds of such driver bits depending on the use, and various improvements have been made especially in respect of holding the screw by the driver bit itself, and many screw holding type driver bits have been put to practical use. Of these, a representative one is a magnetized engaging portion at the tip of the driver bit, and such a driver bit is an engaging portion that engages with a screw head at the tip of the driver bit 50 as shown in FIG. It is configured to magnetize 51 to hold the screw.
【0003】[0003]
【発明が解決しようとする課題】上記構成の係合部51
を磁石化したドライバビット50では、係合部51を磁
石化するにあたって、係合部51を永久磁石材料で成形
している。一般に、このような永久磁石材料をドライバ
ビット50の係合部51に使用することによって長期
間、係合部51の磁力を持続させることが可能である
が、反面、磁力を高めようとすると脆くなってしまう欠
点があり、永久磁石材料でドライバビット50の係合部
51を構成する場合には、磁力は弱いものとなってしま
い、ねじを強力に吸着保持することが不可能になってい
る。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the driver bit 50 in which the engaging portion 51 is magnetized, the engaging portion 51 is formed of a permanent magnet material when the engaging portion 51 is magnetized. In general, by using such a permanent magnet material for the engaging portion 51 of the driver bit 50, it is possible to maintain the magnetic force of the engaging portion 51 for a long period of time, but on the other hand, if the magnetic force is increased, it becomes brittle. When the engaging portion 51 of the driver bit 50 is made of a permanent magnet material, the magnetic force becomes weak and it becomes impossible to strongly attract and hold the screw. .
【0004】本発明は上記課題に鑑みて創成されたもの
であり、ねじを強力に吸着保持するねじ締め工具を提供
することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a screw tightening tool that strongly attracts and holds screws.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、ねじ頭部の駆動穴に係合する係合部とこれに連続す
る本体部とを有するねじ締め工具であって、本体部を非
磁性体によって成形し、係合部を磁性体によって成形す
るとともに、これら本体部と係合部とを分割可能に構成
し、本体部に係合部と面して位置する収納穴を設け、こ
こに磁化部材を内蔵している。このねじ締め工具におけ
る磁化部材としては永久磁石が好適である。In order to achieve the above object, there is provided a screw tightening tool having an engaging portion which engages with a drive hole of a screw head and a main body portion which is continuous with the engaging portion. Molded with a non-magnetic material, the engaging portion is molded with a magnetic material, the main body portion and the engaging portion are configured to be separable, and the main body portion is provided with a storage hole facing the engaging portion, A magnetizing member is built in here. A permanent magnet is suitable as the magnetizing member in this screw tightening tool.
【0006】[0006]
【作用】上記構成のねじ締め工具は磁性体からなる係合
部を適用し、これを永久磁石によって磁化することによ
り強力な磁力を持つ係合部を得ることが可能となるとと
もに、その磁力を長期間保つことができる。しかも、永
久磁石の周囲は非磁性体である本体部によって覆われて
いるため、永久磁石の磁束の本体部への漏れによる磁力
低下を引き起こすことがない分、さらに係合部を強力に
磁化することができる。In the screw tightening tool having the above-mentioned structure, the engaging portion made of a magnetic material is applied, and by magnetizing this with a permanent magnet, it becomes possible to obtain an engaging portion having a strong magnetic force, and Can be kept for a long time. Moreover, since the periphery of the permanent magnet is covered by the main body which is a non-magnetic material, the magnetic force does not decrease due to the leakage of the magnetic flux of the permanent magnet to the main body, and the engaging portion is further strongly magnetized. be able to.
【0007】[0007]
【実施例】以下図面に基づき本発明の一実施例を説明す
る。図1及び図2において1はねじ締め工具であり、中
実棒状部材の先端にねじ頭部の駆動穴に係合する係合部
が形成されるドライバビットである。ねじ締め工具とし
てはこのようなドライバビットの外にも六角穴付きボル
トに対応した六角レンチ、六角ボルトあるいは六角ナッ
トの締付けに対応したソケット工具などが知られるが、
本実施例においては代表例としてドライバビットを取り
上げて構成及び作用等の説明を行うこととする。また、
以下に述べる構成を前記したねじ締め工具及びその他の
ねじ締め工具に適用することは極めて容易である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes a screw tightening tool, which is a driver bit in which an engaging portion that engages with a driving hole of a screw head is formed at the tip of a solid rod-shaped member. In addition to such driver bits, hexagonal wrench corresponding to hexagon socket head bolt, socket tool corresponding to tightening hexagon bolt or hexagon nut are known as screw tightening tools.
In the present embodiment, a driver bit will be taken up as a typical example to describe the configuration, operation and the like. Also,
It is extremely easy to apply the configuration described below to the screw tightening tool described above and other screw tightening tools.
【0008】前記ねじ締め工具であるドライバビット1
(以下、ねじ締め工具はドライバビット1として説明を
行う。)は中実棒状部材よりなる本体部2を有し、その
後部は六角状に形成され、そこにはねじ締め機等のドラ
イバビット保持部(図示せず)に設けられる鋼球等の保
持部材が嵌合する溝が削設されている。またこの本体部
2の先端にはねじ穴2aが形成され、そのねじ穴2aの
さらに奥には後記する磁化部材が収納される有底の収納
穴2bが設けられている。この本体部2は非磁性体であ
るステンレス鋼のSUS304を材料として成形されて
おり、硬度を得るため、その表面はイオン窒化により硬
化されている。Driver bit 1 which is the screw tightening tool
(Hereinafter, the screw tightening tool will be described as a driver bit 1.) has a main body 2 made of a solid rod-shaped member, and the rear part thereof is formed into a hexagonal shape, in which a driver bit holding device such as a screw tightener is held. A groove into which a holding member such as a steel ball provided in a portion (not shown) is fitted is cut. A screw hole 2a is formed at the tip of the main body 2, and a bottomed storage hole 2b for storing a magnetizing member described later is provided further inside the screw hole 2a. The main body 2 is formed of stainless steel SUS304, which is a non-magnetic material, and its surface is hardened by ion nitriding to obtain hardness.
【0009】前記本体部2の収納穴内には磁化部材であ
る円柱状の永久磁石3が収納され、この永久磁石3が収
納される収納穴2bの前方に設けられているねじ穴2a
には図3(イ)に示す係合部4が螺入されている。この
係合部4は本体部2のねじ穴にねじ込まれるねじ部4a
と、ねじ頭部の駆動穴に係合するビット部4bとからな
り、ビット部4bは先端に向かうに従って徐々に先鋭と
なる略円錐状をなし、その傾斜面に沿って外周を4等分
して成形される曲面状の凹部によってねじ頭部の十字状
の駆動穴に係合する十字状に成形されている。A cylindrical permanent magnet 3 as a magnetizing member is housed in the housing hole of the main body 2, and a screw hole 2a is provided in front of the housing hole 2b in which the permanent magnet 3 is housed.
The engaging portion 4 shown in FIG. The engaging portion 4 is a screw portion 4a screwed into the screw hole of the main body portion 2.
And a bit portion 4b that engages with the drive hole of the screw head. The bit portion 4b has a substantially conical shape that is gradually sharpened toward the tip, and divides the outer circumference into four equal parts along the inclined surface. The curved recessed portion is formed into a cross shape that engages with the cross shaped drive hole of the screw head.
【0010】また、係合部4におけるねじ部4aを本体
部2のねじ穴2aに完全にねじ込んで、係合部4と本体
部2とを固着させた際に、ねじ部4a後端面は前記収納
穴2bに収められている永久磁石3の前端面に当接し、
永久磁石3を収納穴2b内に確実に固定するように構成
されている。この係合部はドライバビットの材料として
広く使用されるとともに、磁性体である工具鋼から成
り、容易に磁化される特性を有する。When the threaded portion 4a of the engaging portion 4 is completely screwed into the threaded hole 2a of the body portion 2 to fix the engaging portion 4 and the body portion 2 to each other, the rear end surface of the threaded portion 4a is Abutting on the front end surface of the permanent magnet 3 housed in the housing hole 2b,
The permanent magnet 3 is configured to be securely fixed in the storage hole 2b. This engaging portion is widely used as a material for a driver bit, and is made of tool steel which is a magnetic material, and has a characteristic of being easily magnetized.
【0011】上記構成のドライバビット1は、着磁力の
高い磁性体である工具鋼からなる係合部4を適用し、こ
れを永久磁石3によって磁化することによって強力な磁
力を持つ係合部4を得ることが可能となるとともに、そ
の磁力を長期間保つことができる。しかも、永久磁石3
の周囲を非磁性体であるステンレス鋼(SUS304)
からなる本体部2によって覆っているため、永久磁石3
の磁束が本体部2へ漏れることによって生ずる磁力低下
を引き起こすことがなく、その分係合部4をより強力に
磁化することができる。また、永久磁石3を本体部2に
内蔵していることから、ドライバビット1の落下、衝突
等による衝撃が直接永久磁石3に作用することがなく、
基本的に脆く、割れ、欠け等の破損を生じ易い永久磁石
3を保護することが可能になっている。The driver bit 1 having the above-mentioned structure is provided with the engaging portion 4 made of tool steel which is a magnetic material having a high magnetic attraction force, and the permanent magnet 3 magnetizes the engaging portion 4 so that the engaging portion 4 has a strong magnetic force. Can be obtained, and the magnetic force can be maintained for a long time. Moreover, the permanent magnet 3
Around non-magnetic stainless steel (SUS304)
The permanent magnet 3 is covered by the main body 2 composed of
The magnetic flux of 1 does not cause a decrease in magnetic force caused by leakage to the main body 2, and the engaging portion 4 can be magnetized more strongly. Further, since the permanent magnet 3 is built in the main body portion 2, the impact due to the driver bit 1 dropping or colliding does not directly act on the permanent magnet 3,
It is possible to protect the permanent magnet 3 which is basically fragile and is liable to be broken such as cracked or chipped.
【0012】尚、上記ドライバビット1における係合部
4の形状としては、図3(ロ)に示すように先端がねじ
頭部上面に一致する曲面状に形成されるとともに、その
中心位置からねじの駆動穴の深さ分ビット部4b先端が
突出するように成形された形状であっても何ら問題はな
い。また、磁化部材についていえば、永久磁石のみなら
ず、例えばドライバビットの外周にコイル受けを設けて
ここにコイルを多重に巻き付け、このコイルに通電する
ことによって発生する磁場を利用する電磁石等の使用も
考えられる。As for the shape of the engaging portion 4 in the driver bit 1, as shown in FIG. 3B, the tip is formed into a curved surface whose upper surface coincides with the upper surface of the screw head, and the screw is inserted from the center position thereof. There is no problem even if the shape is formed so that the tip of the bit portion 4b projects by the depth of the driving hole. As for the magnetizing member, not only a permanent magnet but also an electromagnet that uses a magnetic field generated by energizing this coil, for example, by providing a coil receiver around the outer periphery of the driver bit and winding the coil in multiple turns. Can also be considered.
【0013】[0013]
【発明の効果】以上詳述のとおり本願発明のねじ締め工
具であるドライバビットは、永久磁石の磁力によってド
ライバビットを磁化し、その磁力によってドライバビッ
ト先端にねじを吸着保持するものであって、永久磁石を
非磁性体からなる本体部内に収納し、この前方に磁性体
からなる係合部を設けているから、係合部以外での磁束
の損失を最小限に抑制することが可能であり、このこと
によって係合部を強力に磁化することが可能となり、係
合部にねじを強力に吸着保持することができる。As described above in detail, the driver bit, which is the screw tightening tool of the present invention, magnetizes the driver bit by the magnetic force of the permanent magnet and attracts and holds the screw at the tip of the driver bit by the magnetic force. Since the permanent magnet is housed in the main body made of a non-magnetic material and the engaging portion made of a magnetic material is provided in front of this, it is possible to minimize the loss of magnetic flux other than the engaging portion. As a result, the engaging portion can be strongly magnetized, and the screw can be strongly attracted and held to the engaging portion.
【図1】 本発明に係るねじ締め工具の一実施例の要部
拡大断面図である。FIG. 1 is an enlarged sectional view of an essential part of an embodiment of a screw tightening tool according to the present invention.
【図2】 本発明に係るねじ締め工具の一実施例の正面
図である。FIG. 2 is a front view of an embodiment of the screw tightening tool according to the present invention.
【図3】 本発明に係るねじ締め工具の係合部の斜視図
である。FIG. 3 is a perspective view of an engaging portion of the screw tightening tool according to the present invention.
【図4】 従来例の説明図である。FIG. 4 is an explanatory diagram of a conventional example.
1 ドライバビット 2 本体部 2a ねじ穴 2b 収納穴 3 永久磁石 4 係合部 4a ねじ部 4b ビット部 1 Driver Bit 2 Main Body 2a Screw Hole 2b Storage Hole 3 Permanent Magnet 4 Engagement Part 4a Screw Part 4b Bit Part
Claims (2)
れに連続する本体部とを有するねじ締め工具であって、 本体部を非磁性体によって成形し、係合部を磁性体によ
って成形するとともに、これら本体部と係合部とを分割
可能に構成し、本体部に係合部と面して位置する収納穴
を設け、ここに磁化部材を内蔵したことを特徴とするね
じ締め工具。1. A screw tightening tool having an engaging portion that engages with a drive hole of a screw head and a main body portion that is continuous with the engaging portion, wherein the main body portion is formed of a non-magnetic material, and the engaging portion is magnetic. In addition to being formed by a body, the main body portion and the engaging portion are configured to be separable, the main body portion is provided with a storage hole facing the engaging portion, and a magnetizing member is incorporated therein. Screw tightening tool.
る請求項1に記載のねじ締め工具。2. The screw tightening tool according to claim 1, wherein the magnetizing member is a permanent magnet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19452694A JPH0825242A (en) | 1994-07-14 | 1994-07-14 | Screw fastening tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19452694A JPH0825242A (en) | 1994-07-14 | 1994-07-14 | Screw fastening tool |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0825242A true JPH0825242A (en) | 1996-01-30 |
Family
ID=16326007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19452694A Pending JPH0825242A (en) | 1994-07-14 | 1994-07-14 | Screw fastening tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0825242A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI392563B (en) * | 2010-11-03 | 2013-04-11 | ||
JP2013099772A (en) * | 2011-11-07 | 2013-05-23 | Yoshitaka Aoyama | Guide pin for electric resistance welding electrode |
CN107336181A (en) * | 2017-07-27 | 2017-11-10 | 仲杏英 | Portable type screwdriver |
KR20230000379U (en) * | 2021-08-12 | 2023-02-21 | 두산에너빌리티 주식회사 | Torque wrench with integral type drive socket |
-
1994
- 1994-07-14 JP JP19452694A patent/JPH0825242A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI392563B (en) * | 2010-11-03 | 2013-04-11 | ||
JP2013099772A (en) * | 2011-11-07 | 2013-05-23 | Yoshitaka Aoyama | Guide pin for electric resistance welding electrode |
CN107336181A (en) * | 2017-07-27 | 2017-11-10 | 仲杏英 | Portable type screwdriver |
CN107336181B (en) * | 2017-07-27 | 2019-11-29 | 诸暨易和项目投资有限公司 | Portable type screwdriver |
KR20230000379U (en) * | 2021-08-12 | 2023-02-21 | 두산에너빌리티 주식회사 | Torque wrench with integral type drive socket |
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