JPH0639894Y2 - Ratchet trench - Google Patents

Ratchet trench

Info

Publication number
JPH0639894Y2
JPH0639894Y2 JP1987099049U JP9904987U JPH0639894Y2 JP H0639894 Y2 JPH0639894 Y2 JP H0639894Y2 JP 1987099049 U JP1987099049 U JP 1987099049U JP 9904987 U JP9904987 U JP 9904987U JP H0639894 Y2 JPH0639894 Y2 JP H0639894Y2
Authority
JP
Japan
Prior art keywords
jaw member
nut
upper jaw
lower jaw
pin
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
JP1987099049U
Other languages
Japanese (ja)
Other versions
JPS63179066U (en
Inventor
万稔 中野
敏行 森川
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.)
MCC Corp
Original Assignee
MCC Corp
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 MCC Corp filed Critical MCC Corp
Priority to JP1987099049U priority Critical patent/JPH0639894Y2/en
Publication of JPS63179066U publication Critical patent/JPS63179066U/ja
Application granted granted Critical
Publication of JPH0639894Y2 publication Critical patent/JPH0639894Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案はハンドルの先端にそれぞれ枢着された上顎部材
と下顎部材とのナット受け部をナットに嵌め、ハンドル
を下方へ回動させたときナットが締込まれ、ハンドルを
上方へ回動させたときには上顎部材が自動的に開いてレ
ンチ全体をナットに対して上方へ空まわりさせることが
できるようにしたラチェットレンチに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is applied when the nut receiving portions of the upper jaw member and the lower jaw member pivotally attached to the tip of the handle are fitted into the nuts and the handle is rotated downward. The present invention relates to a ratchet wrench that allows the upper jaw member to automatically open when the nut is tightened and the handle is rotated upward so that the entire wrench idles upward with respect to the nut.

（従来の技術） 上記のようなラチェットレンチは、たとえば実公昭54-2
1835号公報に示されるように従来から知られているが、
この種のラチェットレンチはナットのサイズごとに専用
のものを用いる必要があり、例えば３つのサイズのナッ
トを締めるには３本のラチェットレンチを準備しなけれ
ばならなかった。そこで本考案者はパイプレンチのよう
な上顎部材を下顎部材に対して進退できるようにして、
大径のナットにも小径のナットにも使用することができ
るラチェットレンチを試作した。ところが上顎部材及び
下顎部材のナット受け部は最大径のナットに合わせて形
成されているので、小径のナットを回転させるために上
顎部材と下顎部材とを接近させると第２図にも示される
ようにナットは２つのコーナー部分だけで保持されるこ
ととなり、ハンドルを回動させたときに下顎部材の上面
が上顎部材を上向きに押上げて開くためにナットの締付
けができなくなるという欠点を生ずることが明らかとな
った。(Prior Art) A ratchet wrench as described above is disclosed in, for example,
Although conventionally known as shown in Japanese Patent No. 1835,
It is necessary to use a dedicated ratchet wrench for each nut size, for example, three ratchet wrench must be prepared in order to tighten nuts of three sizes. Therefore, the present inventor has made it possible to move the upper jaw member such as a pipe wrench forward and backward with respect to the lower jaw member,
We prototyped a ratchet wrench that can be used for both large and small diameter nuts. However, since the nut receiving portions of the upper jaw member and the lower jaw member are formed so as to match the maximum diameter nut, when the upper jaw member and the lower jaw member are brought close to each other in order to rotate the small diameter nut, as shown in FIG. Since the nut is held only at the two corners, the upper surface of the lower jaw member pushes the upper jaw member upward to open it when the handle is rotated, which makes it impossible to tighten the nut. Became clear.

（考案が解決しようとする問題点） 本考案は上記のような従来の問題点を解決して、大径の
ナットから小径のナットまで確実に締付けることがで
き、しかも小径のナットを回転させるためにナットとナ
ット受け部との接触点が減少した場合にも上顎部材が下
顎部材によい押上げられて開くことのないラチェットレ
ンチを目的として完成されたものである。(Problems to be solved by the invention) The present invention solves the conventional problems as described above, and can securely tighten from a large diameter nut to a small diameter nut, and further, because the small diameter nut is rotated. The ratchet wrench was completed for the purpose of preventing the upper jaw member from being pushed up well by the lower jaw member and opening even when the number of contact points between the nut and the nut receiving portion is reduced.

（問題点を解決するための手段） 本考案はナット受け部をそれぞれ備えた上顎部材と下顎
部材とをハンドルの先端部にピンにより枢着したラチェ
ットレンチであって、前記上顎部材に透設された透孔に
嵌合したピンの偏心部の回転により上顎部材と下顎部材
の間隔を調節可能とするとともに、いずれの間隔に調節
した場合であっても下顎部材がナットから受ける反力の
作用線よりも上方に下顎部材のピンを配置し、上顎部材
がナットから受ける反力の作用線の延長線よりも下方に
上顎部材のピンを配置したことを特徴とするものであ
る。(Means for Solving Problems) The present invention is a ratchet wrench in which an upper jaw member and a lower jaw member each having a nut receiving portion are pivotally attached to a tip end portion of a handle by a pin, and the ratchet wrench is transparently provided on the upper jaw member. The distance between the upper jaw member and the lower jaw member can be adjusted by rotating the eccentric part of the pin fitted in the through hole, and the action line of the reaction force received from the nut by the lower jaw member regardless of which distance is adjusted The pin of the lower jaw member is arranged above the upper jaw member, and the pin of the upper jaw member is arranged below the extension line of the line of action of the reaction force that the upper jaw member receives from the nut.

（実施例） 次に本考案を図示の実施例について詳細に説明すると、
（１）は先端部（２）が二股状に形成されたハンドル、
（３）はハンドル（１）の先端部（２）にピン（４）に
よって枢着された下顎部材、（５）は同じくハンドル
（１）の先端部（２）に偏心部（８）を持つピン（７）
によって枢着された上顎部材である。上顎部材（５）の
基端部には透孔（６）が透設されており、ハンドル
（１）の先端部（２）に取付けられたピン（７）の偏心
部（８）がこの透孔（６）に嵌合されている。この結
果、第１図のように偏心部（８）が図面上の左方部へ回
転されると上顎部材（５）は下顎部材（３）との間隔を
拡大するように移動し、逆に偏心部（８）が第２図のよ
うに右方部へ回転されると上顎部材（５）は下顎部材
（３）に接近することとなる。なお偏心部（８）を持つ
ピン（７）の上面には周囲の複数箇所にノッチ（９）が
刻設された円板（10）が取付けられており、ハンドル
（１）の先端部（２）にはこれらのノッチ（９）に係合
するストッパー（11）がスプリング（12）の弾発下に設
けてある。図示の実施例では３つのノッチ（９）が形成
されており、３つのサイズのナットに対応する位置まで
上顎部材（５）を移動し、各位置でピン（７）の回転を
止められる構造となっている。またこれらの上顎部材
（５）と下顎部材（３）には、図示のようにナット受け
部（13）、（14）が形成されている。これらのナット受
け部（13）、（14）は従来のものと同様に６角形を２分
割した形状の凹部である。(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment.
(1) is a handle whose tip (2) is bifurcated,
(3) has a lower jaw member pivotally attached to the tip (2) of the handle (1) by a pin (4), and (5) also has an eccentric part (8) at the tip (2) of the handle (1). Pin (7)
It is an upper jaw member pivotally attached by. The upper jaw member (5) is provided with a through hole (6) at the base end thereof, and the eccentric portion (8) of the pin (7) attached to the tip end portion (2) of the handle (1) is formed through the through hole (6). It is fitted in the hole (6). As a result, as shown in FIG. 1, when the eccentric part (8) is rotated to the left in the drawing, the upper jaw member (5) moves so as to increase the space between the upper jaw member (3) and vice versa. When the eccentric portion (8) is rotated rightward as shown in FIG. 2, the upper jaw member (5) approaches the lower jaw member (3). A disc (10) having notches (9) engraved at a plurality of peripheral positions is attached to the upper surface of the pin (7) having the eccentric portion (8), and the tip (2) of the handle (1) is attached. ) Is provided with a stopper (11) which engages with these notches (9) below the spring of the spring (12). In the illustrated embodiment, three notches (9) are formed, and the upper jaw member (5) is moved to a position corresponding to three size nuts, and the rotation of the pin (7) can be stopped at each position. Has become. Further, nut receiving portions (13) and (14) are formed on the upper jaw member (5) and the lower jaw member (3) as illustrated. These nut receiving portions (13) and (14) are recesses each having a shape obtained by dividing a hexagon into two, as in the conventional one.

本考案においては、第１図のように上顎部材（５）を開
いたときにも、第２図のように上顎部材（５）を閉じた
ときにも、下顎部材（３）のコーナー部においてナット
（30）から受ける反力の作用線Ｒよりも下顎部材（３）
のピン（４）が上方に位置するようにされている。ここ
で反力の作用線Ｒは、ナット受け部（14）の面に垂直な
直線である。同様に、ナット受け部（13）の面に垂直
な、上顎部材（５）がナット（30）から受ける反力の作
用線Ｒの延長線よりも、上顎部材（５）のピン（７）は
下方に配置されている。第１図にもこれらの作用線Ｒを
記入したが、実際には第２図の状態においてこれらの条
件が満たされれば、十分である。なお（15）は下顎部材
（３）の上端面と上顎部材（５）の下端面とを常時は密
着させておくためのばねである。According to the present invention, the corners of the lower jaw member (3) are maintained at both the upper jaw member (5) opened as shown in FIG. 1 and the upper jaw member (5) closed as shown in FIG. Lower jaw member (3) than the line of action R of the reaction force received from the nut (30)
The pins (4) are located above. Here, the line of action R of the reaction force is a straight line perpendicular to the surface of the nut receiving portion (14). Similarly, the pin (7) of the upper jaw member (5) is more perpendicular to the extension line of the reaction line R of the reaction force received by the upper jaw member (5) from the nut (30) perpendicular to the surface of the nut receiving portion (13). It is located below. Although these action lines R are also shown in FIG. 1, it is actually sufficient if these conditions are satisfied in the state of FIG. Reference numeral (15) is a spring for keeping the upper end surface of the lower jaw member (3) and the lower end surface of the upper jaw member (5) in close contact with each other at all times.

（作用） このように構成されたものは、ピン（７）の偏心部
（８）を回転させることにより、上顎部材（５）を前進
あるいは後退させてナット受け部（13）、（14）の開き
幅をナット（30）の外径に確実に一致させることができ
るものである。その後、ナット受け部（13）、（14）内
にナット（30）を嵌めてハンドル（１）を上下に揺動さ
せれば、ハンドル（１）が図面上時計方向へ回動される
際には上顎部材（５）と下顎部材（３）とがナット（3
0）を確実に保持してナット（30）を回転させ、逆にハ
ンドル（１）が反時計方向へ回動される際には上顎部材
（５）と下顎部材（３）が時計方向に開いてナット（3
0）の保持を解き、ラチェットレンチ全体を空まわりさ
せることができるものである。またナット（30）が小径
の場合には、第２図に示されるようにナット受け部（1
3）、（14）の２つのコーナーだけでナット（30）が回
転されることとなるが、本考案においては従来のように
下顎部材（３）が上顎部材（５）を押上げて開くことは
ない。即ち、従来品においては第４図のようにナット
（30）から下顎部材（３）が受ける反力の作用線Ｒは下
顎部材のピンの位置（＋で表示）よりも上方を通る。そ
こでこの作用線Ｒを、ピンの中心を通る方向への分力R1
（ピンによって支えられる力）と、下顎部材を回転させ
ようとする分力R2とに分解すると、R2は上向きとなり下
顎部材を時計方向に回転させて押上げる力を生じていた
のである。これに対して本考案においては下顎部材
（３）のピン（４）は作用線Ｒよりも上方に位置させて
あるから、これを第３図のようにR1とR2とに分解すると
R2は下向きとなり、下顎部材（３）には反時計方向のモ
ーメントが作用するので下顎部材（３）が押上げられる
ことがない。同様に上顎部材（５）についてもR2は下向
きとなるから時計方向の回転モーメントが生ずることは
ない。従って本考案のラチェットレンチにおいては第１
図の場合は勿論のこと、第２図の場合にも下顎部材
（３）にピン（４）を中心とする時計方向の回転モーメ
ントが生ずることはなく、上顎部材（５）が下顎部材
（３）によって押上げられて開くことがないから、小径
のナットも大径のナットと同様に確実に締付けることが
できる。(Operation) With this structure, by rotating the eccentric portion (8) of the pin (7), the upper jaw member (5) is moved forward or backward to move the nut receiving portions (13) and (14). The opening width can be surely matched with the outer diameter of the nut (30). After that, by fitting the nut (30) into the nut receiving portions (13) and (14) and swinging the handle (1) up and down, when the handle (1) is rotated clockwise in the drawing. The upper jaw member (5) and the lower jaw member (3) are nuts (3
0) is securely held and the nut (30) is rotated, and conversely, when the handle (1) is rotated counterclockwise, the upper jaw member (5) and the lower jaw member (3) are opened clockwise. Nut (3
It is possible to spin the entire ratchet wrench by releasing the retention of (0). When the nut (30) has a small diameter, as shown in Fig. 2, the nut receiving part (1
Although the nut (30) is rotated only at two corners of 3) and (14), in the present invention, the lower jaw member (3) pushes up the upper jaw member (5) to open as in the conventional case. There is no. That is, in the conventional product, the line of action R of the reaction force received by the lower jaw member (3) from the nut (30) passes above the pin position (indicated by +) of the lower jaw member as shown in FIG. Therefore, let this line of action R be the component force R 1 in the direction passing through the center of the pin.
When it is decomposed into (the force supported by the pin) and the component force R 2 that tries to rotate the lower jaw member, R 2 becomes upward and a force that rotates the lower jaw member clockwise and pushes it up is generated. On the other hand, in the present invention, since the pin (4) of the lower jaw member (3) is located above the line of action R, it can be disassembled into R 1 and R 2 as shown in FIG.
Since R 2 is directed downward and a counterclockwise moment acts on the lower jaw member (3), the lower jaw member (3) is not pushed up. Similarly, with respect to the upper jaw member (5) as well, since R 2 is downward, no clockwise rotational moment is generated. Therefore, in the ratchet wrench of the present invention, the first
In the case of FIG. 2 as well as in the case of FIG. 2, no clockwise rotational moment about the pin (4) is generated in the lower jaw member (3), and the upper jaw member (5) is moved to the lower jaw member (3). ), The small diameter nut can be securely tightened in the same manner as the large diameter nut because it is not pushed up and opened.

なお、ナット（30）の各面と各ナット受け部（13）、
（14）が全て完全に一致する場合、原理的には反力の作
用線Ｒはナット（30）の各々の面に垂直に作用するのが
原則であるが、実際にはナット（30）の嵌合を容易にす
るため両者間には若干のクリアランスがあるので普通で
ある。そして、本考案においては下顎部材（３）と上顎
部材（５）とが対峙して形成したナット受け部とナット
の外周面との間に隙間が生ずるよう構成されている。こ
の結果、締付け解きにおいては一対のナット受け部（1
3）、（14）の２つのコーナーだけがナット（30）に当
接して回転力を付与することとなり、それ以外の面にお
いては若干の隙間を有した状態、即ちナット（30）から
の反力がない状態となる。従って、締付け時における反
力の作用線Ｒとしては、第１図および第２図に示される
ようにナット（30）とナット受け部（13）、（14）とが
完全に一致する一対のコーナー部のみの作用線Ｒを考慮
すればよい。In addition, each surface of the nut (30) and each nut receiving portion (13),
In principle, when all (14) are the same, the line of action R of the reaction force acts on each surface of the nut (30) perpendicularly, but in reality, It is common because there is some clearance between the two to facilitate fitting. In the present invention, the lower jaw member (3) and the upper jaw member (5) are formed so as to face each other, and a gap is formed between the nut receiving portion and the outer peripheral surface of the nut. As a result, a pair of nut receiving parts (1
Only the two corners of 3) and (14) come into contact with the nut (30) to apply the rotational force, and there is a slight gap on the other surface, that is, the reaction from the nut (30). There is no power. Therefore, the line of action R of the reaction force at the time of tightening is, as shown in FIGS. 1 and 2, a pair of corners where the nut (30) and the nut receiving portions (13) and (14) are completely aligned. It suffices to consider the line of action R of only the part.

（考案の効果） 本考案は以上に説明したように、上顎部材の透孔に嵌合
したピンの偏心部を回転させることにより上顎部材を移
動させることができるようにし、大径のナットも小径の
ナットも一本のラチェットレンチにより回転することが
できるようにしたものである。しかも本考案においては
上顎部材と下顎部材とを枢着するピンの配置を工夫し
て、上顎部材と下顎部材の間隔がいずれの間隔に調節さ
れた場合であっても下顎部材に上顎部材を押上げるよう
な力が作用することを防止したので、小径のナットに合
わせて上顎部材の位置を調節した際にも大径のナットと
同様に確実な締付けが可能である。よって本考案は従来
の問題点を一掃したラチェットレンチとして、その実用
的価値は極めて大である。(Effect of the Invention) As described above, the present invention enables the upper jaw member to be moved by rotating the eccentric part of the pin fitted in the through hole of the upper jaw member, and the large diameter nut can also be small in diameter. The nut is also made to rotate with a single ratchet wrench. Moreover, in the present invention, the pin arrangement for pivotally connecting the upper jaw member and the lower jaw member is devised to push the upper jaw member to the lower jaw member regardless of the distance between the upper jaw member and the lower jaw member. Since a force such as raising is prevented from acting, even when adjusting the position of the upper jaw member in accordance with the small diameter nut, it is possible to perform the secure tightening like the large diameter nut. Therefore, the present invention is of great practical value as a ratchet wrench that eliminates the conventional problems.

【図面の簡単な説明】[Brief description of drawings]

図面はいずれも本考案の実施例を示すもので、第１図は
大径のナットを締付ける状態を示す平面図、第２図は小
径のナットを締付ける状態を示す平面図、第３図は本考
案における反力の作用線のベクトル線図、第４図は従来
品における同様のベクトル線図である。 （１）：ハンドル、（２）：先端部、（３）：下顎部
材、（４）：ピン、（５）：上顎部材、（７）：ピン、
（13）、（14）：ナット受け部、（30）：ナット。The drawings all show embodiments of the present invention. FIG. 1 is a plan view showing a state in which a large diameter nut is tightened, FIG. 2 is a plan view showing a state in which a small diameter nut is tightened, and FIG. FIG. 4 is a vector diagram of the reaction line of reaction force in the invention, and FIG. 4 is the same vector diagram in the conventional product. (1): Handle, (2): Tip, (3): Lower jaw member, (4): Pin, (5): Upper jaw member, (7): Pin,
(13), (14): Nut receiving part, (30): Nut.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】ナット受け部（13）、（14）をそれぞれ備
えた上顎部材（５）と下顎部材（３）とをハンドル
（１）の先端部（２）にピン（４）、（７）により枢着
したラチェットレンチであって、前記上顎部材（５）に
透設された透孔（６）に嵌合したピン（７）の偏心部
（８）の回転により上顎部材（５）と下顎部材（３）の
間隔を調節可能とするとともに、いずれの間隔に調節し
た場合であっても下顎部材（３）がナット（30）から受
ける反力の作用線よりも上方に下顎部材（３）のピン
（４）を配置し、上顎部材（５）がナット（30）から受
ける反力の作用線の延長線よりも下方に上顎部材（５）
のピン（７）を配置したことを特徴とするラチェットレ
ンチ。Claims: 1. An upper jaw member (5) and a lower jaw member (3) respectively provided with nut receiving portions (13), (14) are attached to a tip portion (2) of a handle (1) by pins (4), (7). ) Is a ratchet wrench pivotally attached to the upper jaw member (5) by rotating an eccentric part (8) of a pin (7) fitted in a through hole (6) formed in the upper jaw member (5). The distance between the lower jaw members (3) is adjustable, and regardless of which distance the lower jaw members (3) are adjusted, the lower jaw members (3) are located above the line of action of the reaction force that the lower jaw members (3) receive from the nuts (30). ) Pin (4), and the upper jaw member (5) is located below the extension of the line of action of the reaction force that the upper jaw member (5) receives from the nut (30).
Ratchet wrench characterized by arranging pins (7).
JP1987099049U 1987-06-26 1987-06-26 Ratchet trench Expired - Lifetime JPH0639894Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987099049U JPH0639894Y2 (en) 1987-06-26 1987-06-26 Ratchet trench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987099049U JPH0639894Y2 (en) 1987-06-26 1987-06-26 Ratchet trench

Publications (2)

Publication Number Publication Date
JPS63179066U JPS63179066U (en) 1988-11-18
JPH0639894Y2 true JPH0639894Y2 (en) 1994-10-19

Family

ID=30967574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987099049U Expired - Lifetime JPH0639894Y2 (en) 1987-06-26 1987-06-26 Ratchet trench

Country Status (1)

Country Link
JP (1) JPH0639894Y2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52140498U (en) * 1976-04-20 1977-10-25
JPS5363798U (en) * 1976-11-01 1978-05-29

Also Published As

Publication number Publication date
JPS63179066U (en) 1988-11-18

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