JPH06262427A - Oil pressure releasing mechanism for power hydraulic tool - Google Patents
Oil pressure releasing mechanism for power hydraulic toolInfo
- Publication number
- JPH06262427A JPH06262427A JP4166845A JP16684592A JPH06262427A JP H06262427 A JPH06262427 A JP H06262427A JP 4166845 A JP4166845 A JP 4166845A JP 16684592 A JP16684592 A JP 16684592A JP H06262427 A JPH06262427 A JP H06262427A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pressure
- hydraulic
- pressure releasing
- oil
- oil pressure
- 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
- Shearing Machines (AREA)
- Portable Power Tools In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、切断や圧着等の電設
作業を行なう電動油圧工具に用いるもので、特に片手で
作業することの出来る電動油圧工具の油圧解除機構に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hydraulic tool for electric work such as cutting and crimping, and more particularly to a hydraulic pressure release mechanism for an electric hydraulic tool which can be operated with one hand.
【０００２】[0002]
【従来の技術】従来、ボルトや棒鋼等を切断する場合に
は図４に示すような手動式切断機を用いることが多い。
この切断機は先端部に刃１０１ａを備えたリンク１０１
と刃１０２ｂを備えたリンク１０２と、リンク１０３及
びハンドル１０４とで所謂トッグル機構を構成するよう
にしたものである。そしてハンドル１０４とハンドル１
０５とを矢印の方向に回すと、刃１０１ａと刃１０２ｂ
とが軸１０６を中心として相互に反対方向に回転し、こ
れらの刃の間に挟まれたボルトや棒鋼はせん断力により
切断される。また、このような切断機には電動式切断機
もあるが通常地上にある電源に接続するためのコ−ドを
必要としている。圧着作業については、電動油圧工具と
して実開平２−１３０７６９号で開示されたものが知ら
れているが、これは油圧解除の操作レバ−が把持部に配
置されておらず駆動モ−タをＯＮ・ＯＦＦ操作するトリ
ガスイッチの近傍にないため、片手操作で油圧を解除す
ることが出来ない。2. Description of the Related Art Conventionally, a manual cutting machine as shown in FIG. 4 is often used for cutting bolts and steel bars.
This cutting machine has a link 101 having a blade 101a at its tip.
The link 102 including the blade 102b, the link 103, and the handle 104 constitute a so-called toggle mechanism. And handle 104 and handle 1
When 05 and are rotated in the direction of the arrow, the blade 101a and the blade 102b
Rotate about the shaft 106 in opposite directions, and the bolts and steel bars sandwiched between these blades are cut by shearing force. In addition, such a cutting machine has an electric cutting machine, but usually requires a code for connecting to a power source on the ground. Regarding crimping work, an electric hydraulic tool disclosed in Japanese Utility Model Laid-Open No. 2-130769 is known. However, the operation lever for releasing the hydraulic pressure is not arranged in the grip portion, and the drive motor is turned on.・ Since it is not near the trigger switch to be turned off, the hydraulic pressure cannot be released by one-handed operation.
【０００３】[0003]
【発明が解決しようとする課題】電設工事等においては
高所、特に天井にぶら下がった状態のボルトや棒鋼を切
断したり、高所の不便な場所で手足の自由度を制約され
た状態の下でボルト等を切断したり、電線の圧着をしな
ければならないことが多い。しかし手動式切断機や手動
式圧着機を使用するには両手を使用しなければならず且
つ相当な腕力を必要とする。また、従来の電動式ではコ
−ドを使用したものであったり、ヘッド部の油圧解除の
操作が片手で出来ない構造のものであるため両手を使用
しなければならず自由度に限界があり操作も不便であ
る。この発明はかかる課題に鑑みてなされたものであ
り、その目的とする所は天井や高所等不便な場所でのボ
ルトや棒鋼の切断や電線の圧着作業等を楽に行なうこと
ができる電動油圧工具において、作業後ヘッド部の油圧
解除の操作も片手で行なうことが可能な油圧解除機構を
提供することにある。[Problems to be Solved by the Invention] In electrical work, etc., under high condition, especially under the condition where the bolts and steel bars hanging from the ceiling are cut, or the degree of freedom of limbs is restricted in an inconvenient place of high place. It is often necessary to cut bolts and crimp electric wires with. However, using a manual cutting machine or a manual crimping machine requires the use of both hands and requires a considerable amount of physical strength. In addition, since the conventional electric type uses a cord or has a structure in which the operation of releasing the hydraulic pressure of the head part cannot be performed with one hand, both hands must be used and there is a limit to the degree of freedom. The operation is also inconvenient. The present invention has been made in view of the above problems, and an object thereof is an electric hydraulic tool that can easily perform work such as cutting bolts and steel bars and crimping electric wires in an inconvenient place such as a ceiling or a high place. It is another object of the present invention to provide a hydraulic pressure releasing mechanism that can also perform the hydraulic pressure releasing operation of the head portion after the work with one hand.
【０００４】[0004]
【課題を解決するための手段】即ち、この発明は上記す
る課題を解決するために、駆動モ−タと、減速機構部
と、偏心軸部と回転軸部とを形成し前記減速機構部に直
結させる偏心軸と、一端を該偏心軸部の偏心軸に回動自
在に嵌合されたカムプランジャと、該カムプランジャを
往復動自在に嵌挿させるシリンダ室と該シリンダ室に通
じオイルをオイルタンクより給送する油圧回路とシリン
ダ室のオイルをオイルタンクに逃がす油圧解除回路とよ
り構成される油圧ポンプ部と、前記油圧回路の油圧によ
り駆動されるピストンを設けた工具ヘッド部と、より成
る電動油圧工具において、油圧解除機構が、把持部に駆
動モ−タをＯＮ・ＯＦＦ操作するトリガスイッチと該ト
リガスイッチ近傍に油圧解除ボタンを配置してモ−タの
ＯＮ・ＯＦＦ操作と油圧解除操作を片手で行なうことを
可能にし、固定部に回動自在に枢着され一端が油圧ポン
プ部の油圧解除のバルブステムと当接し、他端が前記油
圧解除ボタンと結合したレバ−により、前記油圧解除ボ
タンの押圧によるてこ作用で前記油圧解除のバルブステ
ムを押し前記油圧解除回路を作動させることを特徴とす
る。That is, in order to solve the above-mentioned problems, the present invention forms a drive motor, a speed reduction mechanism portion, an eccentric shaft portion and a rotation shaft portion, and the speed reduction mechanism portion is provided with the drive motor. An eccentric shaft to be directly connected, a cam plunger whose one end is rotatably fitted to the eccentric shaft of the eccentric shaft portion, a cylinder chamber into which the cam plunger is reciprocally fitted, and an oil which is communicated to the cylinder chamber and is oiled. A hydraulic pump unit including a hydraulic circuit for feeding oil from a tank and a hydraulic pressure releasing circuit for releasing oil in the cylinder chamber to an oil tank, and a tool head unit provided with a piston driven by the hydraulic pressure of the hydraulic circuit. In an electric hydraulic tool, a hydraulic pressure release mechanism arranges a trigger switch for turning on / off a drive motor on a grip portion and a hydraulic pressure release button near the trigger switch to turn on / off the motor. The pressure release operation can be performed with one hand, and the lever is pivotally attached to the fixed part and one end abuts on the hydraulic pressure release valve stem of the hydraulic pump part, and the other end is connected to the hydraulic pressure release button by a lever. The lever for pushing the hydraulic pressure release button pushes the valve stem for releasing the hydraulic pressure to operate the hydraulic pressure release circuit.
【０００５】[0005]
【作用】コ−ドレス電動油圧カッタを上記手段とした時
の作用について添付図の符号を用いて説明する。ハンド
ル部２のトリガ１０を押しＯＮとすると駆動源のモ−タ
４が回転し、駆動軸４ａより遊星歯車減速機構５を介し
て回転力はカムプランジャ機構６へ伝達され、更に該カ
ムプランジャ機構６により往復運動に変換され油圧ポン
プ部７が駆動される。そしてカッタヘッド部８に置かれ
たボルトや棒鋼は切断される。ボルト等が切断されると
トリガ１０を戻しモ−タ４をＯＦＦとする。そして同じ
手の別の指でそのままトリガ１０の下のボタン１１を押
すとレバ−１２はてこ作用によりバルブステム９４を押
し油圧解除回路が作動し、油圧ポンプ部７のシリンダ７
２内のオイルはタンク７３へ戻り油圧が解除される。ボ
タン１１から指を離すとレバ−１２は復帰レバ−のばね
１６の付勢力により元の状態復帰する。このように、ボ
ルト等の切断作業のための操作、即ちモ−タのＯＮ・Ｏ
ＦＦ操作や油圧解除のためのボタン操作がこのコ−ドレ
ス電動油圧カッタを持った同じ片手で可能となる。The operation when the cordless electro-hydraulic cutter is used as the above means will be described with reference to the reference numerals in the accompanying drawings. When the trigger 10 of the handle portion 2 is pushed and turned on, the motor 4 of the drive source rotates, and the rotational force is transmitted from the drive shaft 4a to the cam plunger mechanism 6 via the planetary gear reduction mechanism 5 and further the cam plunger mechanism. The hydraulic pump unit 7 is driven by the reciprocating motion of the hydraulic pump 6. Then, the bolts and steel bars placed on the cutter head portion 8 are cut. When the bolt or the like is cut off, the trigger 10 is returned and the motor 4 is turned off. Then, when the button 11 under the trigger 10 is pushed with another finger of the same hand as it is, the lever 12 pushes the valve stem 94 by the lever action to activate the hydraulic pressure release circuit, and the cylinder 7 of the hydraulic pump unit 7 is activated.
The oil in 2 returns to the tank 73 and the hydraulic pressure is released. When the finger is released from the button 11, the lever 12 returns to its original state by the biasing force of the spring 16 of the return lever. In this way, operations for cutting bolts, that is, turning the motor on and off
The FF operation and the button operation for releasing the hydraulic pressure can be performed with the same one hand holding the cordless electric hydraulic cutter.
【０００６】[0006]
【実施例】以下、この発明の具体的実施例について図面
を参照して説明する。図１はコ−ドレス電動油圧カッタ
の動力伝達機構と操作機構を示す図、図２はカッタヘッ
ド部へ油圧を伝達する前記動力伝達機構の詳細図であ
る。このコ−ドレス電動油圧カッタは、電源である電池
３を収納し把持部を兼ねるハンドル部２と、該電池３に
より駆動されるモ−タ４（配線は省略）を収納すると共
に該モ−タ４により駆動される遊星歯車減速機構５と、
該遊星歯車減速機構５により駆動されるカムプランジャ
機構６と、該カムプランジャ機構６により高圧を発生さ
せる油圧ポンプ部７と、該油圧ポンプ部７からの油圧に
よって駆動されボルト等を切断するカッタを配置したカ
ッタヘッド部８と、前記油圧ポンプ部８により高圧とな
った油圧を解除する油圧解除回路９等より構成されてい
る。尚、これらの各要素はカッタヘッド部８を除いてケ
−ス１内に収容される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a power transmission mechanism and an operating mechanism of a cordless electro-hydraulic cutter, and FIG. 2 is a detailed view of the power transmission mechanism for transmitting hydraulic pressure to a cutter head portion. This cordless electro-hydraulic cutter accommodates a handle portion 2 which also accommodates a battery 3 which is a power source and also serves as a gripping portion, and a motor 4 (wiring is omitted) which is driven by the battery 3 and at the same time. A planetary gear reduction mechanism 5 driven by 4;
A cam plunger mechanism 6 driven by the planetary gear reduction mechanism 5, a hydraulic pump unit 7 for generating a high pressure by the cam plunger mechanism 6, and a cutter driven by hydraulic pressure from the hydraulic pump unit 7 for cutting bolts and the like. It comprises a cutter head portion 8 arranged and a hydraulic pressure release circuit 9 for releasing the hydraulic pressure that has been increased by the hydraulic pump portion 8. Each of these elements is housed in the case 1 except for the cutter head portion 8.
【０００７】また前記ハンドル部２には前記モ−タ４を
ＯＮ・ＯＦＦ操作するためのトリガ１０が配置されてお
り、この発明の電動油悪工具における油圧解除機構とし
て該トリガ１０の下部近傍には後述するようにてこ作用
によりバルブステム９４を押し油圧解除回路９を作動さ
せるレバ−１２を回転させるための操作ボタン１１が配
置されている。A trigger 10 for turning on and off the motor 4 is arranged on the handle portion 2, and is provided near a lower portion of the trigger 10 as a hydraulic pressure releasing mechanism in the electric oil bad tool of the present invention. As will be described later, an operating button 11 for rotating the lever 12 for pushing the valve stem 94 by the lever action and operating the hydraulic pressure release circuit 9 is arranged.
【０００８】更に前記カッタヘッド部８には、切断され
るべきボルトを置くための縦穴８０が形成されると共に
該縦穴８０の一方には油圧により矢印方向Ｐへ移動する
移動カッタ８１と、該移動カッタ８１とのせん断作用に
よりボルトを切断するための固定カッタ８２とが配置さ
れている。Further, the cutter head portion 8 is formed with a vertical hole 80 for placing a bolt to be cut, and one of the vertical holes 80 is provided with a moving cutter 81 which is moved in the arrow direction P by hydraulic pressure, and the moving cutter 81. A fixed cutter 82 for cutting the bolt by a shearing action with the cutter 81 is arranged.
【０００９】次に、前記遊星歯車減速機構５について図
２を参照して説明する。この遊星歯車減速機構５は、モ
−タ４の駆動軸４ａに嵌着された太陽歯車５１ａ、該太
陽歯車５１ａとギヤケ−ス５０に固定保持された内歯歯
車５１ｃに噛合する遊星歯車５１ｂ、該遊星歯車５１ｂ
を回動自在に枢着し反対側に二段目の太陽歯車５２ａを
一体に形成した遊星保持板５１ｄ、該二段目の太陽歯車
５２ａとギヤケ−ス５０に固定保持された内歯歯車５２
ｃに噛合する遊星歯車５２ｂ、該二段目の遊星歯車５２
ｂを回動自在に枢着し反対側に三段目の太陽歯車５３ａ
を一体に形成した遊星保持板５２ｄ、該三段目の太陽歯
車５３ａと噛合する遊星歯車５３ｂを回動自在に枢着す
る遊星保持板５３ｄと、より構成されている。そして該
遊星保持板５３ｄにはスプライン穴を刻設し回転軸６１
に刻設されたスプライン６１ａにスプライン嵌合されて
いる。Next, the planetary gear reduction mechanism 5 will be described with reference to FIG. The planetary gear reduction mechanism 5 has a sun gear 51a fitted to the drive shaft 4a of the motor 4, a planetary gear 51b meshed with the sun gear 51a and an internal gear 51c fixedly held by the gear case 50, The planet gear 51b
A planetary holding plate 51d integrally pivotally rotatably mounted on the opposite side and a second stage sun gear 52a integrally formed on the opposite side, and an internal gear 52 fixedly held by the second stage sun gear 52a and the gear case 50.
a planetary gear 52b meshing with c, the planetary gear 52 of the second stage
b is rotatably pivotally attached and the third stage sun gear 53a is provided on the opposite side.
And a planetary holding plate 53d integrally formed with the planetary gear holding plate 52d. The planetary gear holding plate 53d rotatably pivotally mounts a planetary gear 53b meshing with the third stage sun gear 53a. A spline hole is formed in the planet holding plate 53d so that the rotation shaft 61
The spline is fitted to the spline 61a engraved on the.
【００１０】前記カムプランジャ機構６は、回転軸６１
と偏心軸６２及びカムプランジャ６３とより形成され
る。そして回転軸６１は軸受６４、６５により支承さ
れ、偏心軸６２には軸受６６を介してカムプランジャ６
３が嵌めてある。こうして前記モ−タ４の駆動軸４ａか
ら遊星歯車減速機構５を介して減速された回転力は回転
軸６１及び偏心軸６２に伝達されカムプランジャ６３の
ロッド６３ａを後述する油圧ポンプ部７のシリンダ室６
７内で往復駆動して油圧ポンプ部７を作動させる。The cam plunger mechanism 6 includes a rotary shaft 61.
And an eccentric shaft 62 and a cam plunger 63. The rotating shaft 61 is supported by bearings 64 and 65, and the eccentric shaft 62 is mounted on the cam plunger 6 via a bearing 66.
3 is fitted. In this way, the rotational force reduced from the drive shaft 4a of the motor 4 via the planetary gear reduction mechanism 5 is transmitted to the rotary shaft 61 and the eccentric shaft 62, and the rod 63a of the cam plunger 63 is connected to the cylinder of the hydraulic pump unit 7 described later. Room 6
The hydraulic pump unit 7 is operated by reciprocating the inside of 7.
【００１１】次に、油圧ポンプ部７はシリンダブロック
７０に別個に嵌着して設けたシリンダ７２とピストン７
１と、オイルタンク７３と、前記シリンダ７２とオイル
タンク７３との間に配置される給油路７５とより構成さ
れる。この給油路７５には逆止弁７５ａが配置され、前
記プランジャロッド６３ａを嵌入してあるシリンダ室６
７を介して油圧をシリンダ７２へ供給しピストン７１を
駆動する。そして該ピストン７１はボルトや棒鋼を切断
するためのカッタヘッド８を駆動する。Next, the hydraulic pump portion 7 is provided with a cylinder 72 and a piston 7 which are separately fitted to the cylinder block 70.
1, an oil tank 73, and an oil supply passage 75 arranged between the cylinder 72 and the oil tank 73. A check valve 75a is arranged in the oil supply passage 75, and the cylinder chamber 6 into which the plunger rod 63a is fitted is inserted.
Hydraulic pressure is supplied to the cylinder 72 via 7 to drive the piston 71. The piston 71 drives the cutter head 8 for cutting bolts and steel bars.
【００１２】次に前記油圧解除回路９は、図２に示すよ
うに、前記シリンダブロック７０に穿設した戻り油路７
７の途中に設けた穴９０に配置され、ばね圧調整ねじ９
１とばね９２と逆止弁９３及びバルブステム９４とより
構成される。図３はこの発明の電動油圧工具における油
圧解除機構の要部を示す図であるが、１２はシリンダ７
２内の油圧をリリ−スするためのレバ−であって軸１３
により回動自在にケ−ス１に枢着されている。即ち、前
記カッタヘッド部８でボルト等を切断した後トリガ１０
の下部近傍に配置されるボタン１１を押すとレバ−１２
はてこ作用でバルブステム９４を押し、次いで止弁９３
を押してシリンダ７２内の油圧をオイルタンク７３へリ
リ−スする。この油圧解除によりピストン７１はばね７
８の付勢力で元の位置へ戻る。また前記レバ−１２の端
部はケ−ス１のハンドル部２にばね１６により付勢され
て取付けられたばねステ−１５と常に接触させてあり、
該ボタンから指を離すとばね１６の付勢力により自動的
に元の位置に復帰する。Next, as shown in FIG. 2, the hydraulic pressure release circuit 9 is provided with a return oil passage 7 formed in the cylinder block 70.
7 is arranged in the hole 90 provided in the middle of the spring 7, and the spring pressure adjusting screw 9
1, a spring 92, a check valve 93, and a valve stem 94. FIG. 3 is a view showing a main part of a hydraulic pressure releasing mechanism in the electric hydraulic tool of the present invention, and 12 is a cylinder 7.
A lever for releasing the hydraulic pressure in the shaft 2 and the shaft 13
Is rotatably pivotally attached to the case 1. That is, the trigger 10 is provided after cutting the bolts and the like at the cutter head portion 8.
If you press the button 11 located near the bottom of the
The lever stem pushes the valve stem 94 and then the stop valve 93
Press to release the oil pressure in the cylinder 72 to the oil tank 73. This release of the hydraulic pressure causes the piston 71 to move to the spring 7.
It returns to its original position with the biasing force of 8. Further, the end portion of the lever 12 is constantly in contact with a spring stay 15 which is attached to the handle portion 2 of the case 1 by being biased by a spring 16.
When the finger is released from the button, the spring 16 automatically returns to the original position by the urging force of the spring 16.
【００１３】電動油圧工具における油圧解除機構の構成
は以上のようであるが、次にその動作について説明す
る。ハンドル部２のトリガ１０を押しＯＮとすると駆動
源のモ−タ４が回転し、駆動軸４ａより遊星歯車減速機
構５を介して回転力はカムプランジャ機構６へ伝達さ
れ、更に該カムプランジャ機構６により往復運動に変換
され油圧ポンプ部７が駆動されシリンダ７２内のピスト
ン７１を駆動する。こうしてカッタヘッド部８に置かれ
たボルトや棒鋼は切断される。ボルト等が切断されると
再度トリガ１０を戻しモ−タ４をＯＦＦとする。そして
同じ手の別の指でそのままトリガ１０の下のボタン１１
を押すとレバ−１２はてこ作用によりバルブステム９４
を押し油圧解除回路９が作動し、シリンダ７２内のオイ
ルはタンク７３へ戻り油圧が解除される。ボタン１１か
ら指を離すとレバ−１２は復帰レバ−のばね１６の付勢
力により元の状態に復帰する。このようにこのコ−ドレ
ス電動油圧カッタではボルト等の切断作業のための操
作、即ちモ−タのＯＮ・ＯＦＦ操作や油圧解除のための
ボタン操作がこのコ−ドレス電動油圧カッタを持った同
じ片手で可能となる。The structure of the hydraulic pressure releasing mechanism in the electric hydraulic tool is as described above. Next, its operation will be described. When the trigger 10 of the handle portion 2 is pushed and turned ON, the motor 4 of the drive source rotates, and the rotational force is transmitted from the drive shaft 4a to the cam plunger mechanism 6 via the planetary gear reduction mechanism 5 and further the cam plunger mechanism. 6, the hydraulic pump portion 7 is converted into reciprocating motion and the piston 71 in the cylinder 72 is driven. Thus, the bolts and steel bars placed on the cutter head portion 8 are cut. When the bolt or the like is cut, the trigger 10 is returned again and the motor 4 is turned off. Then, with another finger of the same hand, just press the button 11 below the trigger 10.
When the lever is pressed, the lever 12 levers the valve stem 94 by lever action.
The oil pressure release circuit 9 is activated by pressing, and the oil in the cylinder 72 returns to the tank 73 to release the oil pressure. When the finger is released from the button 11, the lever 12 returns to its original state by the biasing force of the spring 16 of the return lever. As described above, in this cordless electric hydraulic cutter, the operations for cutting the bolts, that is, the ON / OFF operation of the motor and the button operation for releasing the hydraulic pressure are the same as those of the cordless electric hydraulic cutter. It is possible with one hand.
【００１４】[0014]
【発明の効果】この発明の電動油圧工具における油圧解
除機構は以上詳述したような構成としたので、天井や高
所等不便な場所でのボルトや棒鋼の切断や電線の圧着作
業等を電動油圧工具で行なった後、工具をもったその手
で油圧を解除する操作を楽に行うことが出来る。このよ
うに把持部のトリガスイッチの近傍に配置した油圧解除
用のボタンと該ボタンの操作により作業に要するすべて
の操作を片手で行なうことが出来るので作業者は他の手
足を身体を安定させるため使用することが出来て作業の
安全も確保することが出来る。作業の際の行動が大きく
広がり作業能率も大幅に向上させることが出来る。Since the hydraulic pressure releasing mechanism in the electric hydraulic tool of the present invention is constructed as described in detail above, it can be used for cutting bolts and steel bars and crimping electric wires at inconvenient places such as ceilings and high places. After performing with a hydraulic tool, you can easily release the hydraulic pressure with the hand holding the tool. In this way, the button for releasing the hydraulic pressure arranged near the trigger switch of the grip portion and all the operations required for the work can be performed with one hand by operating the button, so that the operator can stabilize the other limbs with his body. It can be used and work safety can be secured. The behavior during work is greatly expanded, and work efficiency can be significantly improved.
【図１】コ−ドレス電動油圧カッタの動力伝達機構と操
作機構を示す図である。FIG. 1 is a diagram showing a power transmission mechanism and an operation mechanism of a cordless electro-hydraulic cutter.
【図２】コ−ドレス電動油圧カッタのカッタ部へ油圧を
伝達する前記動力伝達機構の詳細図である。FIG. 2 is a detailed view of the power transmission mechanism that transmits hydraulic pressure to the cutter portion of the cordless electric hydraulic cutter.
【図３】この発明の電動油圧工具における油圧解除機構
を作動させるボタンとレバ−の部分を示す図である。FIG. 3 is a diagram showing a button and a lever portion for operating a hydraulic pressure release mechanism in the electric hydraulic tool of the present invention.
【図４】従来のボルトや棒鋼を切断する手動式切断機の
略図である。FIG. 4 is a schematic view of a conventional manual cutting machine for cutting bolts and steel bars.
１ ケ−ス ２ ハンドル部
４ モ−タ ５ 遊星歯車減速機構 ６ カムプランジャ機構 ７ 油圧ポンプ部 ８ カッタヘッド部 ９ 油圧解除回路 １０ トリガ
１１ ボタン １２ レバ− １５ ばねステ−
１６ ばね ６２ 偏心軸 ６３ カムプランジャ ７０ シリンダブロック ７１ ピストン
７２ シリンダ ７３ オイルタンク ８１ 移動カッタ
８２ 固定カッタ ９１ ばね圧調整ねじ ９２ ばね
９３ 逆止弁 ９４ バルブステム1 case 2 Handle part
4 Motor 5 Planetary Gear Reduction Mechanism 6 Cam Plunger Mechanism 7 Hydraulic Pump Section 8 Cutter Head Section 9 Hydraulic Release Circuit 10 Trigger
11 button 12 lever 15 spring stay
16 spring 62 eccentric shaft 63 cam plunger 70 cylinder block 71 piston
72 Cylinder 73 Oil Tank 81 Moving Cutter
82 Fixed cutter 91 Spring pressure adjusting screw 92 Spring
93 Check valve 94 Valve stem
Claims (1)
と回転軸部とを形成し前記減速機構部に直結させる偏心
軸と、一端を該偏心軸部の偏心軸に回動自在に嵌合され
たカムプランジャと、該カムプランジャを往復動自在に
嵌挿させるシリンダ室と該シリンダ室に通じオイルをオ
イルタンクより給送する油圧回路とシリンダ室のオイル
をオイルタンクに逃がす油圧解除回路とより構成される
油圧ポンプ部と、前記油圧回路の油圧により駆動される
ピストンを設けた工具ヘッド部と、より成る電動油圧工
具において、把持部に駆動モ−タをＯＮ・ＯＦＦ操作す
るトリガスイッチと該トリガスイッチ近傍に油圧解除ボ
タンを配置してモ−タのＯＮ・ＯＦＦ操作と油圧解除操
作を片手で行なうことを可能にし、固定部に回動自在に
枢着され一端が油圧ポンプ部の油圧解除のバルブステム
と当接し、他端が前記油圧解除ボタンと結合したレバ−
により、前記油圧解除ボタンの押圧によるてこ作用で前
記油圧解除のバルブステムを押し前記油圧解除回路を作
動させることを特徴とする電動油圧工具における油圧解
除機構。1. A drive motor, a reduction gear mechanism, an eccentric shaft that forms an eccentric shaft portion and a rotation shaft portion and is directly connected to the reduction gear mechanism portion, and one end thereof rotates on an eccentric shaft of the eccentric shaft portion. A freely-fitted cam plunger, a cylinder chamber into which the cam plunger is reciprocally inserted, a hydraulic circuit that communicates with the cylinder chamber and supplies oil from the oil tank, and a hydraulic pressure that allows the oil in the cylinder chamber to escape to the oil tank. In an electric hydraulic tool including a hydraulic pump unit including a release circuit, a tool head unit provided with a piston driven by the hydraulic pressure of the hydraulic circuit, a drive motor is turned on and off in the gripping unit. A trigger switch and a hydraulic pressure release button near the trigger switch are placed to enable ON / OFF operation of the motor and hydraulic pressure release operation with one hand. A lever that is in contact with a valve stem for releasing the hydraulic pressure of the pump part and has the other end connected to the hydraulic pressure release button.
Thus, the hydraulic pressure releasing mechanism in the electric hydraulic tool is characterized in that the lever stem of the hydraulic pressure releasing is pushed by the lever action by pressing the hydraulic pressure releasing button to operate the hydraulic pressure releasing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4166845A JPH06262427A (en) | 1992-06-01 | 1992-06-01 | Oil pressure releasing mechanism for power hydraulic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4166845A JPH06262427A (en) | 1992-06-01 | 1992-06-01 | Oil pressure releasing mechanism for power hydraulic tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06262427A true JPH06262427A (en) | 1994-09-20 |
Family
ID=15838720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4166845A Pending JPH06262427A (en) | 1992-06-01 | 1992-06-01 | Oil pressure releasing mechanism for power hydraulic tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06262427A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446482B1 (en) | 2001-09-17 | 2002-09-10 | Fci Americas Technology, Inc. | Battery operated hydraulic compression tool with rapid ram advance |
| CN107719608A (en) * | 2017-09-26 | 2018-02-23 | 华中科技大学 | Cut hydraulic tool in a kind of deep-sea |
| CN109746356A (en) * | 2019-02-14 | 2019-05-14 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of small underwater cable cutting device |
-
1992
- 1992-06-01 JP JP4166845A patent/JPH06262427A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446482B1 (en) | 2001-09-17 | 2002-09-10 | Fci Americas Technology, Inc. | Battery operated hydraulic compression tool with rapid ram advance |
| CN107719608A (en) * | 2017-09-26 | 2018-02-23 | 华中科技大学 | Cut hydraulic tool in a kind of deep-sea |
| CN107719608B (en) * | 2017-09-26 | 2019-07-19 | 华中科技大学 | A kind of deep-sea cutting hydraulic tool |
| CN109746356A (en) * | 2019-02-14 | 2019-05-14 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of small underwater cable cutting device |
| CN109746356B (en) * | 2019-02-14 | 2020-04-28 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Small underwater cable cutting device |
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