JP3745129B2 - Ratchet wrench - Google Patents

Ratchet wrench Download PDF

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Publication number
JP3745129B2
JP3745129B2 JP28636598A JP28636598A JP3745129B2 JP 3745129 B2 JP3745129 B2 JP 3745129B2 JP 28636598 A JP28636598 A JP 28636598A JP 28636598 A JP28636598 A JP 28636598A JP 3745129 B2 JP3745129 B2 JP 3745129B2
Authority
JP
Japan
Prior art keywords
main body
rotor
ratchet wrench
ratchet
tip
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.)
Expired - Lifetime
Application number
JP28636598A
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Japanese (ja)
Other versions
JP2000117648A (en
Inventor
山下昭一朗
Original Assignee
株式会社山下工業研究所
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.)
Filing date
Publication date
Application filed by 株式会社山下工業研究所 filed Critical 株式会社山下工業研究所
Priority to JP28636598A priority Critical patent/JP3745129B2/en
Priority to TW88201975U priority patent/TW410709U/en
Priority to DE1999128132 priority patent/DE19928132C2/en
Publication of JP2000117648A publication Critical patent/JP2000117648A/en
Application granted granted Critical
Publication of JP3745129B2 publication Critical patent/JP3745129B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Description

【０００１】
【発明の属する技術分野】
本発明はラチェットレンチの新規な着想に関するものである。
【従来の技術】
【０００２】
従来のラチェットレンチは図８に示すように、ハンドル５１の先端の本体５３の凹入部５４に回転子５５を仕込み、回転子５５と一体の角軸６０を本体５８外に突出させ、凹入部５４の縁に左右２本の係止爪５６，５７の基部に弧面５７ａを設け、凹入部５４の縁の嵌合凹欠５４ａに弧面５７ａを嵌め、両係止爪５６，５７間に切換カム５８を介在させ、両係止爪５６，５７にそれぞれコイルばね５９，６０を圧接し、圧接力で一方の係止爪先端５６ａ，５７ａを回転子５５の周面に形成したラチェット歯に係合させる構造になっている。
【０００３】
【発明が解決しようとする課題】
本発明の課題は前記従来構造のラチェットレンチに更に改良を加え簡単な構成により動作も確実に行われるものを提供することにある。
【０００４】
【課題を解決するための手段】
本発明の手段は次のとおりである。
【０００５】
ハンドルの先端に形成した本体の凹入部にラチェット歯を周面に形成した回転子を仕込み、回転子と一体の角軸を本体外に突出させ、回転子の中心線上において、前記凹入部の縁に形成した嵌合凹欠に、係止爪と一体の２本の枢軸を互いに重ねて上下に嵌め、回転子のラチェット歯に係合する前記係止爪にそれぞればねを圧接したラチェットレンチ。
【０００６】
【発明の実施の形態】
図について説明すると、１はハンドル２の先端に設けたレンチ本体で、表面に長円形の凹入部３を形成し、本体１の長手方向に沿う中心線ｌ上に回転子４を取付け、回転子４と一体の角軸５を本体１の裏面の孔６に挿入すると角軸５の先は本体１より突出する。そして角軸５に横穴７を形成し、これにコイルばね９を入れスチールボール１０を受け止める。又凹入部３の縁に、係止爪１１，１２を突設した枢軸１３，１４が入る嵌合凹欠１５を中心線ｌと一致する位置に形成する
。
図５、図６に示すように枢軸１３，１４は１本を重ねて用いるように同形で、それぞれ係止爪１１，１２を一体に突設し、又一側に偏して突出し、両枢軸１３，１４は逆にして重ね嵌合凹欠１５に挿入し、複数の爪先１１ａ，１２ａを形成して、両係止爪１１，１２は回転子４のラチェット歯１７に噛み合う。即ち従来のように単一の歯が噛み合うのに比べ回転子４への噛み合い作用は確実となる。更に中心線ｌ上に左右の係止爪１１，１２に作用させたコイルばね２０，２１に抗して切換えるカム１９を枢着し、係止爪の一方から他方に切換えれば回転方向は変わる。尚図中２２は凹入部３に施すカバーを示す。
【０００７】
【発明の効果】
本発明によれば、両係止爪の枢軸は中心一箇所であるから、従来の左右２軸に比べ構造は簡単化され、しかも左右２本の係止爪及びその枢軸は同一構造の一本を逆に使用することにより組立られるため、極めて有利である。
【図面の簡単な説明】
【図１】 正面図。
【図２】 本体の縦断側面図。
【図３】 本体の正面図。
【図４】 カバーを取外した本体の内部構造を示す正面図。
【図５】 係止爪の正面図。
【図６】 係止爪の側面図。
【図７】 係止爪の斜視図。
【図８】 従来のラチェットレンチの要部の平面図。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel idea of a ratchet wrench.
[Prior art]
[0002]
As shown in FIG. 8, the conventional ratchet wrench has a rotor 55 inserted in a recessed portion 54 of a main body 53 at the tip of a handle 51, and a square shaft 60 integral with the rotor 55 protrudes outside the main body 58. An arc surface 57a is provided at the base of the left and right two locking claws 56, 57 at the edge of the groove, and the arc surface 57a is fitted into the fitting recess 54a at the edge of the recessed portion 54, so that the switching between both the locking claws 56, 57 is performed. Coil springs 59 and 60 are pressed against both locking claws 56 and 57, respectively, with a cam 58 interposed therebetween, and one locking claw tip 56a and 57a is engaged with a ratchet tooth formed on the peripheral surface of the rotor 55 by a pressing force. It has a structure to match.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a ratchet wrench having a conventional structure, which is further improved and can be reliably operated with a simple structure.
[0004]
[Means for Solving the Problems]
Means of the present invention are as follows.
[0005]
A rotor with ratchet teeth formed on the peripheral surface is inserted into the recessed part of the main body formed at the tip of the handle, and the angular axis integral with the rotor protrudes outside the main body, and the edge of the recessed part on the center line of the rotor A ratchet wrench in which two pivots integral with a locking claw are overlapped with each other in a fitting recess formed on the top and bottom, and a spring is pressed against each of the locking claw engaging with the ratchet teeth of the rotor.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, reference numeral 1 denotes a wrench main body provided at the tip of a handle 2, an oblong recess 3 is formed on the surface, and a rotor 4 is mounted on a center line l along the longitudinal direction of the main body 1. When the square shaft 5 integrated with 4 is inserted into the hole 6 on the back surface of the main body 1, the tip of the square shaft 5 protrudes from the main body 1. Then, a horizontal hole 7 is formed in the square shaft 5, and a coil spring 9 is inserted into this to receive the steel ball 10. A fitting recess 15 into which the pivot shafts 13 and 14 projecting the locking claws 11 and 12 enter is formed at the edge of the recess 3 at a position coincident with the center line l.
As shown in FIGS. 5 and 6, the pivot shafts 13 and 14 have the same shape so as to be used one on top of each other, and the locking claws 11 and 12 are integrally projected, and are biased toward one side to project both pivot shafts. 13 and 14 are reversely inserted into the overlapped recess 15 to form a plurality of toe tips 11 a and 12 a, and the engaging claws 11 and 12 mesh with the ratchet teeth 17 of the rotor 4. In other words, the meshing action on the rotor 4 is more reliable than when a single tooth meshes as in the prior art. Further, a cam 19 that is switched against the coil springs 20 and 21 applied to the left and right latching claws 11 and 12 is pivotally mounted on the center line l, and the direction of rotation is changed by switching from one of the latching claws to the other. . In the figure, reference numeral 22 denotes a cover applied to the recessed portion 3.
[0007]
【The invention's effect】
According to the present invention, since the pivot shafts of both the locking claws are at one center, the structure is simplified as compared with the conventional two left and right shafts, and the two left and right locking claws and the pivot shaft are one of the same structure. It is very advantageous because it is assembled by using the reverse.
[Brief description of the drawings]
FIG. 1 is a front view.
FIG. 2 is a longitudinal side view of the main body.
FIG. 3 is a front view of the main body.
FIG. 4 is a front view showing the internal structure of the main body with the cover removed.
FIG. 5 is a front view of a locking claw.
FIG. 6 is a side view of a locking claw.
FIG. 7 is a perspective view of a locking claw.
FIG. 8 is a plan view of a main part of a conventional ratchet wrench.

Claims (1)

ハンドル（２）の先端に形成した本体（１）の凹入部（３）にラチェット歯（１７）を周面に形成した回転子（４）を仕込み、回転子（４）と一体の角軸（５）を本体（１）外に突出させ、本体（１）の長手方向に沿う中心線上において、前記凹入部（３）の縁に形成した嵌合凹欠（１５）に、係止爪（１１），（１２）と一体の２本の枢軸（１３），（１４）を互いに重ねて上下に嵌め、回転子（４）のラチェット歯（１７）に係合する前記係止爪（１１），（１２）にそれぞればね（２０），（２１）を圧接したラチェットレンチ。  A rotor (4) having ratchet teeth (17) formed on its peripheral surface is placed in a recessed portion (3) of the main body (1) formed at the tip of the handle (2), and an angular shaft ( 5) is protruded outside the main body (1), and on the center line along the longitudinal direction of the main body (1), the engaging claw (11) is fitted into the fitting recess (15) formed at the edge of the concave portion (3). ), (12) and the two pivots (13), (14) which are integrated with each other and are vertically fitted to engage the ratchet teeth (17) of the rotor (4). A ratchet wrench in which springs (20) and (21) are pressed against (12), respectively.
JP28636598A 1998-10-08 1998-10-08 Ratchet wrench Expired - Lifetime JP3745129B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP28636598A JP3745129B2 (en) 1998-10-08 1998-10-08 Ratchet wrench
TW88201975U TW410709U (en) 1998-10-08 1999-02-05 Ratchet wrench
DE1999128132 DE19928132C2 (en) 1998-10-08 1999-06-19 Ratchet wrench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28636598A JP3745129B2 (en) 1998-10-08 1998-10-08 Ratchet wrench

Publications (2)

Publication Number Publication Date
JP2000117648A JP2000117648A (en) 2000-04-25
JP3745129B2 true JP3745129B2 (en) 2006-02-15

Family

ID=17703448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28636598A Expired - Lifetime JP3745129B2 (en) 1998-10-08 1998-10-08 Ratchet wrench

Country Status (3)

Country Link
JP (1) JP3745129B2 (en)
DE (1) DE19928132C2 (en)
TW (1) TW410709U (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002239934A (en) * 2001-02-20 2002-08-28 Yamashita Kogyo Kenkyusho:Kk Ratchet wrench
US6431030B1 (en) * 2001-07-12 2002-08-13 Wen-Jin Kuo Adjusting structure for a ratchet wrench
US20040089108A1 (en) * 2002-11-11 2004-05-13 Chuck Chang Wrench having a locking device with a smaller driving angle
TW201000266A (en) * 2008-06-19 2010-01-01 Hou-Fei Hu Reversible wrench with effect of reversing and positioning
US7775141B2 (en) 2008-08-01 2010-08-17 Snap-On Incorporated Extended low-torque ratchet wrench
TWI382895B (en) * 2010-07-09 2013-01-21 Direction changing structure for a ratchet hand tool
US10406658B2 (en) * 2012-04-30 2019-09-10 Jeffrey Dean MacDonald Open-ended ratchet wrench
CN204135953U (en) * 2014-09-01 2015-02-04 李永光 Ratchet spanner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1062140A (en) * 1912-09-30 1913-05-20 Floyd Bisch Ratchet-wrench.
DE8119306U1 (en) * 1981-07-02 1981-10-29 Gedore-Werkzeugfabrik Otto Dowidat, 5630 Remscheid "SWITCHABLE RATCHET KEY"
US5174176A (en) * 1991-12-09 1992-12-29 Snap-On Tools Corporation Reversible rachet wrench with integrated dual pawl and spring and cam unit

Also Published As

Publication number Publication date
DE19928132A1 (en) 2000-04-20
TW410709U (en) 2000-11-01
JP2000117648A (en) 2000-04-25
DE19928132C2 (en) 2000-11-09

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