JP2004276191A - Swing wrench - Google Patents

Swing wrench Download PDF

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Publication number
JP2004276191A
JP2004276191A JP2003073107A JP2003073107A JP2004276191A JP 2004276191 A JP2004276191 A JP 2004276191A JP 2003073107 A JP2003073107 A JP 2003073107A JP 2003073107 A JP2003073107 A JP 2003073107A JP 2004276191 A JP2004276191 A JP 2004276191A
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JP
Japan
Prior art keywords
head
handle
wrench
swing
base end
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
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JP2003073107A
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Japanese (ja)
Inventor
Takeshi Matsumoto
雄 松本
Keisuke Niwa
啓介 丹羽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maeda Metal Industries Ltd
Maeda Metal Industries Inc
Original Assignee
Maeda Metal Industries Ltd
Maeda Metal Industries Inc
Priority date (The priority date 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 date listed.)
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Application filed by Maeda Metal Industries Ltd, Maeda Metal Industries Inc filed Critical Maeda Metal Industries Ltd
Priority to JP2003073107A priority Critical patent/JP2004276191A/en
Publication of JP2004276191A publication Critical patent/JP2004276191A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To stably hold a swing angle and improve the operability of changing the swing angle in a wrench, the head of which can be swung. <P>SOLUTION: In this swing wrench, the base end part of a head 1 having a rotary engagement member 2 is fitted to a forked tip part 41 of a handle 4, so that the wrench can be swung in the direction intersecting perpendicularly to the direction of rotating the rotary engagement member 2. In the wrench, the base end of the head 1 is provided with recessed parts 3 formed at substantially equal intervals on a circular arc taking the center of rotation of the head as the center of curvature, and an operating member 5 is disposed between the base end of the head and the inner part of the forked part of the handle 4 to slide in the longitudinal direction. The operating member 5 is energized toward the head by a spring 6, and the head side surface thereof is provided with a projecting part 51 selectively engaged with the recessed parts 3 of the head. Both ends of the operating member 5 in the direction intersecting perpendicularly to the longitudinal direction of the handle 4 are provided with a sliding guide piece 53 projected to come into sliding contact with the outer surface of the handle 4 and also serving as a finger hook and a latch. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する分野】
本発明は、ボルト・ナットを回転させるための回転係合部材を具えたヘッドを、ハンドル先端に揺動可能に取り付けた首振りレンチに関するものである。
【0002】
【従来の技術及び発明が解決しようとする課題】
図10乃至図12は、斯種レンチの従来例を示しており、何れも回転係合部材(2)を具えたヘッド(1)の基端部を、ハンドル(4)の二股先端部(41)に、該回転係合部材(2)を回転させる方向と直交する方向に首振り可能に取り付けている。又、ハンドル(4)に対するヘッド(1)の傾き角度を保持するロック手段(7)を具えている。
何れのロック手段(7)も、ヘッド(1)の基端に該ヘッドの回転中心を曲率中心とする円弧面上に略等間隔に複数の凹み部(3)を形成し、ハンドル(4)の先端部に配備したボール、又は先端が球面のピン等の球面部材(8)を、任意の凹み部(3)に係合させる構成である。
【0003】
図10のレンチの場合、ハンドル(4)の先端部に穴(14)を開設し、該穴(14)に球面部材(8)及び該球面部材(14)を外側へ付勢するバネ(6)を配備している。
図10の場合、球面部材(8)と穴(14)の係合力が弱いので、精々ヘッド(1)の角度を変える際に、クリック感が得られる程度であり、ヘッド(1)の首振り角度を固定することは出来ず、締め付け操作の際、ハンドル(4)がぐらついて使用し難い。
【0004】
図11のレンチの場合、ハンドル(4)の先端側に、ハンドルの長手方向に直交して操作軸(9)をスライド可能に貫通配備し、ハンドル(4)の先端側壁(44)を貫通して配備した球面部材(8)を該軸(9)で押し出してヘッド(1)の凹み部(3)に係合させる。
バネ(6)に抗して操作軸(9)を押し込むと、該軸(9)に開設した逃し切欠(91)が球面部材(8)を受け入れて、ヘッド(1)のロックを解除できる。
図11の場合、操作軸(9)を付勢するバネ(6)をハンドル(4)の外側に配備している関係上、ハンドル(4)からの操作軸(9)の突出長さが大きくなる。
首振り式レンチは、通常のレンチでは使用に支障のある狭隘な場所で使用されことが多く、操作軸(9)の突出長さが大きいと、ハンドル(4)の回転操作に支障が生じることがある。
又、ハンドル(4)からの操作軸(9)の大きな出っ張りと、露出したバネ(6)がデザイン上でも大きなマイナス要素となっている。
【0005】
図12のレンチの場合、図11と同様にしてハンドル(4)の先端側に、ハンドルの長手方向と直交して操作軸(9)をスライド可能に配備している。
操作軸(9)は中央部に、押圧軸部(92)と逃がし軸部(93)を隣り合わせに設けており、両軸部(92)(93)とも、操作軸(9)の両端部よりも細く、逃がし軸部(93)は押圧軸部(92)よりも細い。
ハンドル(4)には、操作軸(9)を挟んで2つのボール(81)(82)を対向配備し、一方のボールを、ハンドル(4)の先端側壁(44)を貫通してヘッド側に出没可能に臨出させ、他方のボール(82)は、バネ(6)によって操作軸(9)側に付勢する。
操作軸(9)の上から下への押し込みによって、押圧軸部(92)がヘッド側のボール(81)を押し出し、ヘッド(1)の凹み部(3)に係合されてヘッド(1)をロックする。
バネ(6)によって他方のボール(82)が操作軸(9)を押圧して、操作軸(9)を保持する。
図12に示す如く、ヘッド(1)のロック状態から、操作軸(9)を下から上に押し込むと、該軸(9)の逃し軸部(93)側へボール(81)を逃がして、ヘッド(1)に対するロックを解除できる。
図12のレンチは、部品点数が増え、加工箇所も多いので、コスト高を招来する。
又、ロックとロック解除では、操作軸(9)の押し込み方向が反対であり、操作性が悪い。
更に、操作軸(9)の位置を保持するために付勢力の強いバネ(6)が必要であり、操作軸(9)の押し込み操作は、軽くはない。
【0006】
更に、図10、図11、図12の何れの場合でも、ロック手段にボールや先端が球面のピン等の球面部材(8)を用いており、該球面部材(8)は相手部材に点接触となること、ヘッドのロック状態で、ヘッド(1)に首振り外力が作用すれば、球面部材(8)を介して球面部材収容穴を大きくする力が働く等により、ガタが生じ易く、耐久性にも問題がある。
更に、小さくて転がり易い球面部材を組み込むのは、慎重な作業を要す上に手間が掛かり、組立作業性が悪い。
【0007】
本発明は、上記問題を一挙に解決できる首振りレンチを明らかにするものである。
【0008】
【課題を解決する手段】
本発明は、回転係合部材(2)を具えたヘッド(1)の基端部を、ハンドル(4)の先端部に、該回転係合部材(2)を回転させる方向と直交する方向に首振り可能に取り付け、ロック手段(7)によってハンドル(4)に対するヘッド(1)の首振り角度をロックできる首振りレンチにおいて、
ロック手段(7)は、ヘッド(1)の基端部に該ヘッドの回転中心を曲率中心とする円弧上に略等間隔に設けられた複数の凹み部(3)と、
ヘッド基端部とハンドル(4)先端部との間に、ハンドル(4)の長手方向にスライド可能に配備され、前記ヘッド(1)の複数の凹み部(3)に選択に嵌まる凸部(51)を具えた操作部材(5)と、
ハンドル(4)の先端部に配備され操作部材(5)をヘッド(1)側に付勢するバネ(6)とによって構成され、
ハンドル(4)の長手方向と直交する方向の操作部材(5)の両端には、ハンドル(4)の外面に摺接し、指掛かり及び抜止めを兼用するスライド案内片(53)が突設されている。
【0009】
【作用及び効果】
操作部材(5)の凸部(51)が、ヘッド(1)の凹み部(3)に嵌まって、ヘッド(1)がロックされる。この状態から、操作部材(5)をバネ(6)に抗してヘッド(1)から離れる方にスライド操作する。凸部(51)が凹み部(3)から脱出して、ヘッド(1)のロックが解除される。
手指で操作部材(5)を保持したまま、ハンドル(4)に対するヘッド(1)の角度を変更し、操作部材(5)の保持を開放する。操作部材(5)はバネ(6)によってヘッド(1)側へ付勢され、凸部(51)が凹み部(3)に嵌まってヘッド(1)をロックする。
【0010】
凹み部(3)に嵌まるのは、従来の様にボール等の球面部材ではなく、操作部材(5)上の凸部(51)であり、該凸部(51)は操作部材(5)に一体に形成することが出来、ボールを組み込む様な、慎重な作業と手間から開放される。
操作部材(5)両端のスライド案内片(53)(53)がハンドル(4)の外面に摺接しているため、操作部材(5)をスライド操作する際、操作部材(5)が傾いてスライドし難くなることを防止できる。
更に、スライド案内片(53)のスライド操作に際し、第1指と第2指を、両スライド案内片(53)(53)に押し当ててスライド操作すれば、一層円滑にスライド操作出来、操作性が向上する。
又、スライド案内片(53)(53)の存在によって、ハンドル(4)からヘッド(1)を外さない限り、操作部材(5)が脱落することはない。
更に、操作部材(5)の両端に形成するスライド案内片(53)(53)は、手指が引っ掛かる大きさ、操作部材(5)をスライド案内できる強度があれば可く、薄く形成できる。このため、ハンドル(4)からのスライド案内片(53)(53)の出っ張りは小さくて済み、ハンドル(4)の締め付け操作に、スライド案内片(53)(53)が邪魔になることを防止できる。
又、両スライド案内片(53)(53)を薄く、互いに対象形状に形成できるため、デザイン的にも、シンプルで優れたものとなる。
【0011】
【発明の実施の形態】
図1、図2は、本発明を実施したラチェットレンチを示している。
ラチェットレンチは、バー状のハンドル(4)と、該ハンドル(4)の先端に首振り可能に取り付けられたヘッド(1)とによって形成される。
ハンドル(4)の先端は二股に形成されている。
【0012】
ヘッド(1)は略楕円状の扁平体に形成され、一方の面に、四角軸状の回転係合部材(2)を突出させており、他方の面に、締付け方向切替用の切替レバー(11)が配備されている。
ヘッド(1)の基端側は、回転係合部材(2)と直交する方向に延びる扁平嵌まり部(12)となっており、該嵌まり部(12)を、前記ハンドル(4)の二股先端部(41)に嵌め、枢軸(13)によってハンドル(4)に回転可能に支持される。
ヘッド(1)はハンドル(4)の締め付け回転方向と直交する方向に揺動可能である。
【0013】
ヘッド(1)の嵌まり部(12)には、ヘッドの回転中心を曲率中心とする円弧面上に略等間隔に凹み部(3)が設けられている。
実施例の凹み部(3)は、前記回転係合部材(2)の軸心と直交する方向に伸びる溝条である。
【0014】
ヘッド(1)の嵌まり部(12)とハンドル(4)の二股先端部(41)の奥との間に、操作部材(5)がハンドル(4)の長手方向にスライド可能に配備される。
操作部材(5)とハンドル(4)の二股先端部(41)の奥の間に、バネ(6)が介装され、該バネ(6)によって操作部材(5)は常時ヘッド(1)側へ付勢される。
バネ(6)はその両端が、操作部材(5)とハンドル(4)の二股先端部(41)の対向位置に開設した穴(43)(52)に嵌まって支持されている。
操作部材(5)のヘッド(1)側の面には、前記ヘッド(1)の複数の凹み部(3)の内、1つの凹み部(3)に選択的に係合可能な凸部(51)が操作部材(5)と一体に突設されている。
凸部(51)は、溝条凹み部(3)に対応して突条に形成されている。
【0015】
操作部材(5)の、ハンドル(4)の長手方向と直交する方向の両端に、スライド案内片(53)(53)が突設されている。
スライド案内片(53)(53)は、ハンドル(4)に切削加工された平行平坦面(42)(42)に摺接する大きさに形成され、二股先端部(41)からの抜止め及び操作部材(5)をスライドさせるための指掛かりを兼用している。
スライド案内片(53)には指掛かり用の膨らみや、凹凸が形成されている。
操作部材(5)は、バネ穴(52)を中心として回転対称に形成されており、天地の区別はない。
【0016】
上記ヘッド(1)の複数の凹み部(3)、凸部(51)を具えた操作部材(5)及び該操作部(5)を付勢するバネ(6)によって、ヘッド(1)に対するロック手段(7)を構成している。
【0017】
然して、図2示す様に、操作部材(5)の凸部(51)が、ヘッド(1)の凹み部(3)に嵌まって、ヘッド(1)がロックされる。
上記ヘッドの角度を変えるには、操作部材(5)をバネ(6)に抗してヘッド(1)から離れる方にスライド操作する。凸部(51)が凹み部(3)から脱出して、ヘッド(1)のロックが解除される。
手指で操作部材(5)を保持したまま、ハンドル(4)に対するヘッド(1)の角度を変更し、操作部材(5)の保持を開放する。操作部材(5)はバネ(6)によってヘッド(1)側へ付勢され、凸部(51)が凹み部(3)に嵌まってヘッド(1)をロックする。
【0018】
凸部(51)と凹み部(3)は、互いに噛み合う突条と溝条に形成されているため、線接触、或いは面接触となり、ボールの様な点接触ではないので、互いの当接部分の損耗は少なく、耐久性を向上できる。
【0019】
更に、凹み部(3)に嵌まるのは、ボールではなく、操作部材(5)に形成された凸部(51)であり、ハンドル(4)の二股先端部(41)にヘッド(1)を取り付ける前に、バネ(6)付きの操作部材(5)を該二股先端部(41)に嵌めるだけ済み、ボールを組み込む様な、慎重な作業と手間から開放される。
操作部材(5)は天地の区別がないので、組立も楽である。
【0020】
操作部材(5)両端のスライド案内片(53)(53)が、ハンドル(4)の平行平坦面(42)(42)に摺接しているため、操作部材(5)のスライド操作の際に、操作部材(5)が傾いてスライドし難くなることはない。
又、第1指と第2指を、両スライド案内片(53)(53)に押し当てて、スライド操作すれば、一層円滑にスライド操作出来、操作性が向上する。
又、スライド案内片(53)は、抜け止めを兼用しており、ハンドル(4)からヘッド(1)を外さない限り、操作部材(5)が脱落することはない。
【0021】
上記実施例の説明は、本発明を説明するためのものであって、特許請求の範囲に記載の発明を限定し、或は範囲を減縮する様に解すべきではない。又、本発明の各部構成は上記実施例に限らず、特許請求の範囲に記載の技術的範囲内で種々の変形が可能であることは勿論である。
【図面の簡単な説明】
【図1】ラチェットレンチの平面図である。
【図2】ハンドルを断面で表したラチェットレンチの正面図である。
【図3】ヘッドの平面図である。
【図4】ヘッドの正面図である。
【図5】ハンドルの平面図である。
【図6】ハンドルの断面図である。
【図7】操作部材の斜面図である。
【図8】操作部材の断面図である。
【図9】操作部材の平面図である。
【図10】従来例1の要部を断面で表した図。
【図11】従来例2の要部を断面で表した図。
【図12】従来例3の要部を断面で表した図。
【符号の説明】
(1) ヘッド
(2) 回転係合部材
(3) 凹み部
(4) ハンドル
(41) 二股先端部
(5) 操作部材
(6) バネ
[0001]
[Field of the Invention]
The present invention relates to a swing wrench in which a head provided with a rotation engaging member for rotating a bolt and a nut is swingably attached to a tip of a handle.
[0002]
Problems to be solved by the prior art and the invention
FIGS. 10 to 12 show a conventional example of such a wrench, in which a base end of a head (1) provided with a rotation engaging member (2) is connected to a bifurcated end (41) of a handle (4). ) Is mounted so as to be swingable in a direction orthogonal to the direction in which the rotation engaging member (2) is rotated. Further, a lock means (7) for holding the inclination angle of the head (1) with respect to the handle (4) is provided.
Each of the locking means (7) has a plurality of recesses (3) formed at substantially the same interval on a circular arc surface having a center of curvature of the rotation center of the head at the base end of the head (1), and a handle (4). A ball or a spherical member (8) such as a pin having a spherical tip is engaged with an arbitrary recess (3).
[0003]
In the case of the wrench of FIG. 10, a hole (14) is formed at the tip of the handle (4), and the spherical member (8) and the spring (6) for urging the spherical member (14) outward in the hole (14). ) Is deployed.
In the case of FIG. 10, since the engaging force between the spherical member (8) and the hole (14) is weak, a click feeling can be obtained when the angle of the head (1) is changed at most, and the head (1) swings. The angle cannot be fixed, and the handle (4) is shaky during the tightening operation, making it difficult to use.
[0004]
In the case of the wrench of FIG. 11, the operating shaft (9) is slidably provided at the distal end side of the handle (4) at right angles to the longitudinal direction of the handle, and penetrates the distal side wall (44) of the handle (4). The deployed spherical member (8) is pushed out by the shaft (9) and engaged with the recess (3) of the head (1).
When the operating shaft (9) is pushed in against the spring (6), the relief notch (91) formed in the shaft (9) receives the spherical member (8), and the lock of the head (1) can be released.
In the case of FIG. 11, since the spring (6) for urging the operation shaft (9) is disposed outside the handle (4), the protrusion length of the operation shaft (9) from the handle (4) is large. Become.
The swing-type wrench is often used in a narrow place where the use of a normal wrench is hindered. If the operation shaft (9) has a long protruding length, the rotation operation of the handle (4) may be hindered. There is.
In addition, the large protrusion of the operation shaft (9) from the handle (4) and the exposed spring (6) are a large negative factor in the design.
[0005]
In the case of the wrench of FIG. 12, an operating shaft (9) is slidably provided at the distal end side of the handle (4) at right angles to the longitudinal direction of the handle as in FIG.
The operating shaft (9) is provided with a pressing shaft (92) and a relief shaft (93) adjacent to each other at the center, and both shafts (92) and (93) are located at both ends of the operating shaft (9). The relief shaft (93) is thinner than the pressing shaft (92).
On the handle (4), two balls (81) and (82) are provided opposite to each other with the operation shaft (9) interposed therebetween, and one of the balls penetrates the distal end side wall (44) of the handle (4) to the head side. The other ball (82) is urged toward the operation shaft (9) by a spring (6).
When the operating shaft (9) is pushed down from above, the pushing shaft (92) pushes out the ball (81) on the head side, and is engaged with the concave portion (3) of the head (1). To lock.
The other ball (82) presses the operation shaft (9) by the spring (6) and holds the operation shaft (9).
As shown in FIG. 12, when the operation shaft (9) is pushed upward from the locked state of the head (1), the ball (81) escapes to the escape shaft portion (93) of the shaft (9), The lock on the head (1) can be released.
The wrench shown in FIG. 12 has an increased number of parts and a large number of processed parts, and therefore, increases the cost.
In the lock and unlock states, the pushing direction of the operation shaft (9) is opposite, and the operability is poor.
Further, a spring (6) having a strong urging force is required to hold the position of the operation shaft (9), and the pushing operation of the operation shaft (9) is not light.
[0006]
Further, in any of FIGS. 10, 11 and 12, a spherical member (8) such as a ball or a pin having a spherical tip is used as the locking means, and the spherical member (8) is in point contact with the mating member. If a head swinging external force acts on the head (1) in the locked state of the head, the force which enlarges the spherical member receiving hole acts via the spherical member (8), etc. There is also a problem with gender.
Further, the incorporation of a small and easily rolling spherical member requires careful work and is troublesome, resulting in poor assembly workability.
[0007]
The present invention is to clarify a swing wrench that can solve the above problems at once.
[0008]
[Means to solve the problem]
According to the present invention, the base end of the head (1) having the rotation engagement member (2) is attached to the distal end of the handle (4) in a direction orthogonal to the direction in which the rotation engagement member (2) is rotated. A swing wrench, which is swingably mounted and can lock the swing angle of the head (1) with respect to the handle (4) by a locking means (7),
The locking means (7) includes a plurality of recesses (3) provided on the base end of the head (1) at substantially equal intervals on an arc having the center of rotation of the head as a center of curvature;
A convex portion slidably disposed in the longitudinal direction of the handle (4) between the base end portion of the head and the distal end portion of the handle (4), and which is selectively fitted in a plurality of recesses (3) of the head (1). An operating member (5) comprising (51);
A spring (6) disposed at the tip of the handle (4) and biasing the operation member (5) toward the head (1);
At both ends of the operation member (5) in a direction perpendicular to the longitudinal direction of the handle (4), slide guide pieces (53) which slide in contact with the outer surface of the handle (4) and serve as both finger catching and retaining are projected. ing.
[0009]
[Action and effect]
The protrusion (51) of the operation member (5) is fitted into the recess (3) of the head (1), and the head (1) is locked. From this state, the operation member (5) is slid in a direction away from the head (1) against the spring (6). The protrusion (51) escapes from the recess (3), and the head (1) is unlocked.
While holding the operation member (5) with fingers, the angle of the head (1) with respect to the handle (4) is changed to release the operation member (5). The operation member (5) is urged toward the head (1) by the spring (6), and the projection (51) is fitted into the recess (3) to lock the head (1).
[0010]
What fits into the concave portion (3) is not a spherical member such as a ball as in the prior art, but a convex portion (51) on the operating member (5), and the convex portion (51) is the operating member (5). It can be formed in one piece, and it is free from careful work and labor such as incorporating a ball.
Since the slide guide pieces (53) (53) at both ends of the operation member (5) are in sliding contact with the outer surface of the handle (4), the operation member (5) is inclined and slid when the operation member (5) is slid. Can be prevented from becoming difficult.
Further, when the slide operation of the slide guide piece (53) is performed by pressing the first finger and the second finger against the slide guide pieces (53) and (53), the slide operation can be performed more smoothly, and the operability is improved. Is improved.
Further, due to the presence of the slide guide pieces (53) (53), the operating member (5) does not fall off unless the head (1) is removed from the handle (4).
Furthermore, the slide guide pieces (53) and (53) formed at both ends of the operation member (5) can be formed as thin as possible as long as they are large enough to catch a finger and have sufficient strength to guide the operation member (5). For this reason, the protrusion of the slide guide pieces (53) and (53) from the handle (4) may be small, and prevents the slide guide pieces (53) and (53) from hindering the tightening operation of the handle (4). it can.
Further, since both slide guide pieces (53) and (53) can be formed thin and symmetrical with each other, the design is simple and excellent.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show a ratchet wrench embodying the present invention.
The ratchet wrench is formed by a bar-shaped handle (4) and a head (1) attached to the tip of the handle (4) so as to swing.
The tip of the handle (4) is bifurcated.
[0012]
The head (1) is formed in a substantially elliptical flat body, has a square shaft-shaped rotation engaging member (2) protruding on one surface, and has a switching lever ( 11) is deployed.
The base end side of the head (1) is a flat fitting portion (12) extending in a direction orthogonal to the rotation engaging member (2), and the fitting portion (12) is attached to the handle (4). It is fitted to the forked tip (41) and is rotatably supported on the handle (4) by the pivot (13).
The head (1) is swingable in a direction orthogonal to the tightening rotation direction of the handle (4).
[0013]
The fitting portion (12) of the head (1) is provided with recesses (3) at substantially equal intervals on an arc surface whose center of curvature is the center of rotation of the head.
The concave portion (3) of the embodiment is a groove extending in a direction perpendicular to the axis of the rotation engaging member (2).
[0014]
An operating member (5) is slidably provided in a longitudinal direction of the handle (4) between a fitting portion (12) of the head (1) and a depth of a forked end (41) of the handle (4). .
A spring (6) is interposed between the operating member (5) and the back of the forked end (41) of the handle (4), and the operating member (5) is constantly moved toward the head (1) by the spring (6). It is energized to.
Both ends of the spring (6) are fitted and supported in holes (43) and (52) formed at positions facing the operating member (5) and the forked tip (41) of the handle (4).
On the surface of the operating member (5) on the head (1) side, a convex portion (3) which can be selectively engaged with one of the concave portions (3) of the head (1). 51) protrude integrally with the operation member (5).
The protrusion (51) is formed in a ridge corresponding to the groove recess (3).
[0015]
Slide guide pieces (53) (53) project from both ends of the operation member (5) in a direction orthogonal to the longitudinal direction of the handle (4).
The slide guide pieces (53) and (53) are formed in such a size as to slidably contact the parallel flat surfaces (42) and (42) machined on the handle (4), and are prevented from coming off from the forked tip (41) and operated. A finger hook for sliding the member (5) is also used.
The slide guide piece (53) is formed with bulges for finger catching and irregularities.
The operation member (5) is formed rotationally symmetric about the spring hole (52), and there is no distinction between top and bottom.
[0016]
The head (1) is locked to the head (1) by an operating member (5) having a plurality of concave portions (3), a convex portion (51), and a spring (6) for urging the operating portion (5). This constitutes means (7).
[0017]
However, as shown in FIG. 2, the protrusion (51) of the operation member (5) is fitted into the recess (3) of the head (1), and the head (1) is locked.
In order to change the angle of the head, the operating member (5) is slid in a direction away from the head (1) against the spring (6). The protrusion (51) escapes from the recess (3), and the head (1) is unlocked.
While holding the operation member (5) with fingers, the angle of the head (1) with respect to the handle (4) is changed to release the operation member (5). The operation member (5) is urged toward the head (1) by the spring (6), and the projection (51) is fitted into the recess (3) to lock the head (1).
[0018]
Since the convex portion (51) and the concave portion (3) are formed as ridges and grooves that mesh with each other, they are in line contact or surface contact, and are not point contacts like a ball. Wear is small and durability can be improved.
[0019]
Further, not the ball but the convex portion (51) formed on the operation member (5) fits into the concave portion (3), and the head (1) is attached to the bifurcated tip (41) of the handle (4). Before mounting, the operation member (5) with the spring (6) is merely fitted to the forked tip (41), so that it is free from careful work and labor such as assembling a ball.
Since the operation member (5) has no distinction between top and bottom, assembly is easy.
[0020]
Since the slide guide pieces (53) and (53) at both ends of the operation member (5) are in sliding contact with the parallel flat surfaces (42) and (42) of the handle (4), the sliding operation of the operation member (5) is performed. The operation member (5) does not become inclined and difficult to slide.
Further, if the first finger and the second finger are pressed against the slide guide pieces (53) and (53) to perform the slide operation, the slide operation can be performed more smoothly, and the operability is improved.
Further, the slide guide piece (53) also serves as a stopper, so that the operating member (5) does not fall off unless the head (1) is removed from the handle (4).
[0021]
The description of the above embodiments is intended to explain the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.
[Brief description of the drawings]
FIG. 1 is a plan view of a ratchet wrench.
FIG. 2 is a front view of a ratchet wrench showing a handle in cross section.
FIG. 3 is a plan view of a head.
FIG. 4 is a front view of the head.
FIG. 5 is a plan view of the handle.
FIG. 6 is a sectional view of a handle.
FIG. 7 is a perspective view of the operation member.
FIG. 8 is a sectional view of an operation member.
FIG. 9 is a plan view of the operation member.
FIG. 10 is a diagram showing a cross section of a main part of Conventional Example 1.
FIG. 11 is a diagram showing a cross section of a main part of Conventional Example 2.
FIG. 12 is a sectional view of a main part of a conventional example 3;
[Explanation of symbols]
(1) Head (2) Rotary engagement member (3) Depression (4) Handle (41) Bifurcation tip (5) Operation member (6) Spring

Claims (2)

回転係合部材(2)を具えたヘッド(1)の基端部を、ハンドル(4)の先端部に、該回転係合部材(2)を回転させる方向と直交する方向に首振り可能に取り付け、ロック手段(7)によってハンドル(4)に対するヘッド(1)の首振り角度をロックできる首振りレンチにおいて、
ロック手段(7)は、ヘッド(1)の基端部に該ヘッドの回転中心を曲率中心とする円弧上に略等間隔に設けられた複数の凹み部(3)と、
ヘッド基端部とハンドル(4)先端部との間に、ハンドル(4)の長手方向にスライド可能に配備され、前記ヘッド(1)の複数の凹み部(3)に選択に嵌まる凸部(51)を具えた操作部材(5)と、
ハンドル(4)の先端部に配備され操作部材(5)をヘッド(1)側に付勢するバネ(6)とによって構成され、
ハンドル(4)の長手方向と直交する方向の操作部材(5)の両端には、ハンドル(4)の外面に摺接し、指掛かり及び抜止めを兼用するスライド案内片(53)が突設されている首振りレンチ。
The base end of the head (1) provided with the rotation engaging member (2) can be swung to the distal end of the handle (4) in a direction perpendicular to the direction in which the rotation engaging member (2) is rotated. In a swing wrench, the swing angle of the head (1) with respect to the handle (4) can be locked by mounting and locking means (7).
The locking means (7) includes a plurality of recesses (3) provided on the base end of the head (1) at substantially equal intervals on an arc having the center of rotation of the head as a center of curvature;
A convex portion slidably disposed in the longitudinal direction of the handle (4) between the base end portion of the head and the distal end portion of the handle (4), and which is selectively fitted in a plurality of recesses (3) of the head (1). An operating member (5) comprising (51);
A spring (6) disposed at the tip of the handle (4) and biasing the operation member (5) toward the head (1);
At both ends of the operation member (5) in a direction orthogonal to the longitudinal direction of the handle (4), slide guide pieces (53) that slide in contact with the outer surface of the handle (4) and serve as both finger catching and retaining are projected. Swing wrench.
凸部(51)は操作部材(5)と一体に形成され、ヘッド(1)の首振り方向と直交する方向に伸びる突条を呈し、ヘッド(1)の凹み部(3)は、該凸部(51)に対応して溝条を呈している請求項1に記載の首振りレンチ。The convex portion (51) is formed integrally with the operation member (5), and has a ridge extending in a direction orthogonal to the head swing direction of the head (1). The concave portion (3) of the head (1) has a convex portion. 2. The swing wrench according to claim 1, wherein the wrench has a groove corresponding to the portion.
JP2003073107A 2003-03-18 2003-03-18 Swing wrench Pending JP2004276191A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI380879B (en) * 2010-09-24 2013-01-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI380879B (en) * 2010-09-24 2013-01-01

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