JPH0214155Y2

JPH0214155Y2 -

Info

Publication number: JPH0214155Y2
Application number: JP14822784U
Authority: JP
Priority date: 1984-09-29
Filing date: 1984-09-29
Publication date: 1990-04-18
Also published as: JPS6163786U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、電線の圧縮接続作業等に用いられる
バツテリを内蔵した手持ち型のモータ駆動式油圧
圧縮器に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hand-held motor-driven hydraulic compressor with a built-in battery used for compressing and connecting electric wires, etc.

（従来の技術）従来モータ駆動型の油圧圧縮器として、例えば
実開昭57−107293に記載のものがある。これは、
付設バツテリにより油圧ポンプを動かし、スプー
ル式の制御弁を操作して油圧を制御するものであ
る。(Prior Art) As a conventional motor-driven hydraulic compressor, there is one described, for example, in Japanese Utility Model Application Laid-Open No. 57-107293. this is,
The hydraulic pump is operated by an attached battery, and the hydraulic pressure is controlled by operating a spool-type control valve.

（考案が解決しようとする問題点）上記従来の油圧圧縮器は、制御弁がスプール式
であるため、この部分が比較的大型、大重量とな
る。また、ラムを復元させるための油圧シリンダ
をラムの外周に設けたため、全体の外径が大き
く、これも大重量化の一因となつている。この種
の圧縮器は、高所において、腕を延ばした不安定
な姿勢で、使用するため、わずかな重量の増大も
作業性に極めて大きな影響を及ぼす。本考案は従
来の油圧圧縮器の上記のような問題点を解決しよ
うとするものである。(Problems to be Solved by the Invention) Since the conventional hydraulic compressor described above has a spool type control valve, this portion is relatively large and heavy. Furthermore, since a hydraulic cylinder for restoring the ram is provided on the outer periphery of the ram, the overall outer diameter is large, which also contributes to the increased weight. This type of compressor is used at a high place in an unstable posture with its arms extended, so even a slight increase in weight has a very large effect on workability. The present invention is intended to solve the above-mentioned problems of conventional hydraulic compressors.

（問題点を解決するための手段）本考案は、上記問題点を解決するため、特に制
御弁を小型化可能なボールバルブ型とし、ラム復
元用のシリンダをラム自身の内部に設け、全体の
外径を縮小可能とした。(Means for Solving the Problems) In order to solve the above problems, the present invention uses a ball valve type control valve that can be particularly miniaturized, and a cylinder for restoring the ram is provided inside the ram itself, thereby reducing the overall The outer diameter can be reduced.

（作用）ボールバルブは弁体が単純で複雑な加工を要し
ないので小型化が容易であり、ラム復元用のシリ
ンダは、ラム自身の内側に設けられているので、
ラムの外周に油室空間がなく、従つて、本体のラ
ム収納シリンダを小径化して全体の軽量化が可能
である。(Function) The ball valve has a simple valve body and does not require complicated machining, so it is easy to downsize, and the cylinder for restoring the ram is installed inside the ram itself.
There is no oil chamber space on the outer periphery of the ram, so the diameter of the ram storage cylinder of the main body can be reduced to reduce the overall weight.

（実施例）本体１はシリンダ部２と、ポンプ３と、把手４
とから成る。ポンプ３はモータ５駆動型で、把手
４はシリンダ部２に対して回動自在で、バツテリ
６のケースを兼ねている。(Example) The main body 1 includes a cylinder part 2, a pump 3, and a handle 4.
It consists of The pump 3 is of a motor 5 driven type, and the handle 4 is rotatable relative to the cylinder portion 2 and also serves as a case for the battery 6.

本体１の先端にはＣ型のフレーム７が固着さ
れ、これに固定圧縮ダイス８が保持されている。 A C-shaped frame 7 is fixed to the tip of the main body 1, and a fixed compression die 8 is held on this frame.

本体１のシリンダ部２は、左右に夫々第１およ
び第２シリンダ９，１０を有し、両者は互いに隔
壁１１により区画されている。 The cylinder portion 2 of the main body 1 has first and second cylinders 9 and 10 on the left and right, respectively, and both are partitioned from each other by a partition wall 11.

ラム１２は圧縮ダイス８と対向するように本体
１の第１シリンダ９に挿入され、圧縮ダイス８と
協働して電線を圧縮する可動圧縮ダイス１３を保
持する。 The ram 12 is inserted into the first cylinder 9 of the main body 1 so as to face the compression die 8, and holds a movable compression die 13 that cooperates with the compression die 8 to compress the electric wire.

本体１の第１シリンダ９と第２シリンダ１０と
は、一方は隔壁１１内の第１油通路１５、制御弁
室１４、第２油通路１６、ポンプ３、を介して第
２シリンダ１０と連通し、他方は第１油通路１
５、弁室１４、第３油通路１７を介して連通して
いる。 One of the first cylinder 9 and the second cylinder 10 of the main body 1 communicates with the second cylinder 10 via a first oil passage 15 in the partition wall 11, a control valve chamber 14, a second oil passage 16, and a pump 3. and the other is the first oil passage 1
5, the valve chamber 14 and the third oil passage 17 communicate with each other.

ラム１２は小シリンダ１８を有し、このシリン
ダ１８に固定ピストン１９が挿入されている。固
定ピストン１９は、第１シリンダ９の閉塞端であ
る隔壁１１から第１シリンダ９内へ軸線方向に延
出したピストン杆２０の先端に設けられている。
しかして、ラムの小シリンダ１８内には、それの
閉塞端と固定ピストン１９との間に第１油室２
１、それの開放側と固定ピストン１９との間に第
２油室２２が夫々形成されている。また、第１シ
リンダ９内には、ラム１２との間に第３油室２３
が形成されている。第１油室２１と第３油室２３
とは、ラム１２の第４油通路２４を介して連通
し、第２油室２２と第４油室２７とはピストン杆
２０内の第５油通路２５、第２油通路１６、ポン
プ３を介して連通している。 The ram 12 has a small cylinder 18 into which a fixed piston 19 is inserted. The fixed piston 19 is provided at the tip of a piston rod 20 that extends in the axial direction from the partition wall 11 that is the closed end of the first cylinder 9 into the first cylinder 9 .
Therefore, in the small cylinder 18 of the ram, there is a first oil chamber 2 between the closed end of the small cylinder 18 and the fixed piston 19.
1. A second oil chamber 22 is formed between the open side thereof and the fixed piston 19, respectively. In addition, a third oil chamber 23 is provided in the first cylinder 9 between it and the ram 12.
is formed. The first oil chamber 21 and the third oil chamber 23
The second oil chamber 22 and the fourth oil chamber 27 communicate through the fourth oil passage 24 of the ram 12, and the fifth oil passage 25 in the piston rod 20, the second oil passage 16, and the pump 3 communicate with each other. communicated through.

第２シリンダ１０内には早送り用ピストン２６
が挿入され、第２シリンダ内に第４油室２７を形
成している。第２シリンダ１０の中心には、早送
り用ピストン２６を相対摺動自在に貫通して押棒
２８が挿入されている。押棒の先端部は、弁室１
４内に進退自在に螺挿され、球３２を押込むこと
ができる。押棒の先端は把手４に固着され、これ
と共に回動可能である。早送り用ピストン２６
は、押棒２８の外周の押ばね２９により、常時隔
壁１１側へ付勢されている。 Inside the second cylinder 10 is a rapid-feeding piston 26.
is inserted to form a fourth oil chamber 27 within the second cylinder. A push rod 28 is inserted into the center of the second cylinder 10 so as to be able to slide relative thereto through the rapid feed piston 26 . The tip of the push rod is located in the valve chamber 1.
The ball 32 is screwed into the ball 4 so that it can move forward and backward. The tip of the push rod is fixed to the handle 4 and is rotatable therewith. Rapid feed piston 26
is constantly urged toward the partition wall 11 by a push spring 29 on the outer periphery of the push rod 28.

圧力スイツチ３０は、隔壁１１内の第６油通路
３１、弁室１４、第１油通路１５、第４油通路２
４を介して第１および第３油室２１，２３に連通
し、また第６油通路３１、第５油通路２５を介し
て第２油室２２に夫々連通している。そして圧力
スイツチ３０は、第１、第２、第３油室２１，２
２，２３内の夫々の油圧が所定値に達したときに
これを感知してモータ５を停止させるものとす
る。 The pressure switch 30 includes a sixth oil passage 31, a valve chamber 14, a first oil passage 15, and a fourth oil passage 2 in the partition wall 11.
4 to the first and third oil chambers 21 and 23, and communicates to the second oil chamber 22 via a sixth oil passage 31 and a fifth oil passage 25, respectively. The pressure switch 30 is connected to the first, second, and third oil chambers 21 and 2.
When the respective oil pressures in the motors 2 and 23 reach a predetermined value, this is sensed and the motor 5 is stopped.

次に動作を説明する。第１図の状態で、電線を
圧縮ダイス８，１３間に入れ、把手４を回動させ
て押棒２８を弁室１４から後退させると、第２図
の如く、弁室１４内の球３２が弁座から離れる。
早送り用ピストン２６は、ばね２９に押されて第
４油室２７内の油を、油通路１５，１７，２４、
弁室１４を介して第１および第３油室２１，２３
へ送る。すると、第１および第３油室２１，２３
が拡大し、ラム１２は押出され、圧縮ダイス８，
１３が電線を軽く挟む。第２油室２２は縮小し、
内部の油は油通路２５を経て弁室１４へ入り、こ
こから油通路１５，２４を経て第１、第３油室２
１，２３へ、あるいは、油通路１７を経て第４油
室２７へ押出される。これで早送りが完了する。
押棒２８を十分に後退させた状態で、次にモータ
５のスイツチを入れてポンプ３を動作させると、
第３図の如く、第４油室２７内の油が吸入弁３
３、吐出弁３４、油通路１６を経て弁室１４内へ
入り、球３２を図中右側の弁座へ圧接させ、弁室
１４と第４油室２７との間の油通路を閉鎖する。
油はさらに油通路１５，２４を経て第１および第
３油室２１，２３へ圧送され、ラム１２は強圧を
もつて押出され、圧縮ダイス８，１３間の電線が
圧縮接続される。第１、第３油室２１，２３が所
定油圧に達すると、油圧は第４油通路２４、第１
油通路１５、弁室１４、第６油通路３１を経て圧
力スイツチ３０へ伝わり、これが働きモータ５を
停止させる。圧縮作業が完了したら、第１図の如
く、把手４を回動して球３２を左側の弁座へ押し
付け、この状態でモータ５を始動させると、油は
第４油室２７から油通路１６，２５を通つて第２
油室２２へ圧送される。第２油室２２内の油圧が
所定値に達すると、油圧は、第５油通路２５、第
６油通路３１を経て圧力スイツチ３０に伝わり、
これが働いてモータ５への電流を断ち、モータ５
は停止する。第２油室２２の拡大によりラム１２
は押戻され、圧縮ダイス８，１３は電線を解放す
る。ラムの復帰に伴ない、第１油室２１、第３油
室２３内の油は油通路２４，１５，１７、弁室１
４を経て第４油室２７へ戻される。これにより第
４油室２７内の早送り用ピストン２６は、ばね２
８を圧縮しつつ後退する。 Next, the operation will be explained. In the state shown in FIG. 1, when the electric wire is inserted between the compression dies 8 and 13 and the handle 4 is rotated to retreat the push rod 28 from the valve chamber 14, the ball 32 in the valve chamber 14 is released as shown in FIG. Move away from the valve seat.
The rapid-feeding piston 26 is pushed by a spring 29 and moves the oil in the fourth oil chamber 27 to the oil passages 15, 17, 24,
The first and third oil chambers 21 and 23 via the valve chamber 14
send to Then, the first and third oil chambers 21, 23
expands, the ram 12 is extruded, and the compression die 8,
13 lightly pinches the wire. The second oil chamber 22 is reduced,
The internal oil enters the valve chamber 14 through the oil passage 25, and from there, the oil passes through the oil passages 15 and 24 to the first and third oil chambers 2.
1 and 23, or to the fourth oil chamber 27 via the oil passage 17. Fast forwarding is now complete.
With the push rod 28 sufficiently retracted, next turn on the motor 5 to operate the pump 3.
As shown in Fig. 3, the oil in the fourth oil chamber 27 is
3. Enter the valve chamber 14 via the discharge valve 34 and the oil passage 16, press the ball 32 against the valve seat on the right side of the figure, and close the oil passage between the valve chamber 14 and the fourth oil chamber 27.
The oil is further fed under pressure to the first and third oil chambers 21, 23 via the oil passages 15, 24, the ram 12 is pushed out with strong pressure, and the electric wire between the compression dies 8, 13 is compressed and connected. When the first and third oil chambers 21 and 23 reach a predetermined oil pressure, the oil pressure is changed to the fourth oil passage 24 and the first oil passage.
The pressure is transmitted through the oil passage 15, the valve chamber 14, and the sixth oil passage 31 to the pressure switch 30, which acts to stop the motor 5. When the compression work is completed, rotate the handle 4 to press the ball 32 against the left valve seat as shown in FIG. , 25 through the second
The oil is fed under pressure to the oil chamber 22. When the oil pressure in the second oil chamber 22 reaches a predetermined value, the oil pressure is transmitted to the pressure switch 30 via the fifth oil passage 25 and the sixth oil passage 31.
This works and cuts off the current to motor 5, causing motor 5 to
stops. Due to the expansion of the second oil chamber 22, the ram 12
is pushed back and the compression dies 8, 13 release the wire. As the ram returns, the oil in the first oil chamber 21 and third oil chamber 23 flows through the oil passages 24, 15, 17 and the valve chamber 1.
4 and is returned to the fourth oil chamber 27. As a result, the rapid-feeding piston 26 in the fourth oil chamber 27 is moved by the spring 2
Move back while compressing 8.

（考案の効果）以上説明してきたように、本考案は、油圧制御
弁として、弁室１４内に球３２を挿入した、ボー
ルバルブを用いたので、小型軽量化が可能であ
り、またラム１２の復元用のシリンダ１８をラム
１２自身の内側に設けたので、ラム１２の外側を
可及的に小径化することができ、全体の小型軽量
化に寄与することができる、という効果を有す
る。(Effects of the invention) As explained above, the invention uses a ball valve in which the ball 32 is inserted into the valve chamber 14 as a hydraulic control valve, so it is possible to reduce the size and weight of the ram 12. Since the restoring cylinder 18 is provided inside the ram 12 itself, the outer diameter of the ram 12 can be made as small as possible, which has the effect of contributing to the overall size and weight reduction.

[Brief explanation of the drawing]

第１図は圧縮ダイス解放状態の正面図、第２図
は早送り途上の正面図、第３図は圧縮動作中の正
面図である。１……本体、２……シリンダ部、３……ポン
プ、４……把手、５……モータ、６……バツテ
リ、７……フレーム、８，１３……圧縮ダイス、
９……第１シリンダ、１０……第２シリンダ、１
１……隔壁、１２……ラム、１４……弁室、１
５，１６，１７……第１、第２、第３油通路、１
８……小シリンダ、１９……固定ピストン、２０
……ピストン杆、２１……第１油室、２２……第
２油室、２３……第３油室、２４，２５……第
４、第５油通路、２６……早送り用ピストン、２
７……第４油室、２８……押棒、２９……押ば
ね、３０……圧力スイツチ、３１……第６油通
路、３２……球、３３……吸入弁、３４……吐出
弁。 FIG. 1 is a front view of the compression die in a released state, FIG. 2 is a front view of the compression die in the middle of rapid forwarding, and FIG. 3 is a front view of the compression die during compression operation. 1... Body, 2... Cylinder part, 3... Pump, 4... Handle, 5... Motor, 6... Battery, 7... Frame, 8, 13... Compression die,
9...First cylinder, 10...Second cylinder, 1
1... Bulkhead, 12... Ram, 14... Valve chamber, 1
5, 16, 17...first, second, third oil passage, 1
8...Small cylinder, 19...Fixed piston, 20
...Piston rod, 21...First oil chamber, 22...Second oil chamber, 23...Third oil chamber, 24, 25...Fourth and fifth oil passages, 26...Rapid feed piston, 2
7... Fourth oil chamber, 28... Push rod, 29... Push spring, 30... Pressure switch, 31... Sixth oil passage, 32... Ball, 33... Suction valve, 34... Discharge valve.

Claims

[Scope of utility model registration request]

A first cylinder is provided at one end of the main body, a second cylinder is provided at the other end, and a control valve chamber and an electric hydraulic pump are provided in the middle. A ram holding a compression die is inserted into the first cylinder, and the first cylinder A piston rod extends into the first cylinder from the closed end of the ram, and a fixed piston is provided at the tip of the piston rod, and the ram has a cylinder into which the fixed piston is inserted. 1 oil room,
A second oil chamber is formed on each open end side, and a third oil chamber is formed between the ram and the closed end of the first cylinder, and a rapid-feeding piston is inserted into the second cylinder. A fourth oil chamber is formed in the cylinder, and the third oil chamber and the fourth oil chamber communicate with each other via a first oil passage, a control valve chamber, a second oil passage, and a pump, and the first oil passage, The control valve chamber communicates with the third oil passage, the first oil chamber and the third oil chamber communicate with each other through the fourth oil passage of the ram, and the second oil chamber and the fourth oil chamber communicate with each other through the piston rod. A fifth oil passage, a second oil passage, and a pump communicate with each other, and a fifth oil passage, a control valve chamber, and a third oil passage communicate with each other, and the rapid-feeding piston is always connected to the control valve chamber by a spring. The tip of the second cylinder is screwed into the second cylinder so that it can move forward and backward into the control valve chamber, and the other end of the second cylinder is connected to a rotatable handle that passes through the fast-running piston so as to be slidable. A push rod is provided in the control valve chamber, and in the forward position of the push rod, the oil passages between the control valve chamber and the second oil chamber and between the control valve chamber and the pump are closed, and the oil passages between the control valve chamber and the third oil chamber are closed. Open the oil passages between the control valve chamber and the fourth oil chamber, and open the oil passages between the control valve chamber and the first, second, and third oil chambers, the control valve chamber, and the pump at the retracted position of the push rod. A ball is inserted that opens the oil passage between the control valve chamber and the fourth oil chamber, and closes the oil passage between the control valve chamber and the fourth oil chamber.
Furthermore, there is a pressure switch that stops the electric hydraulic pump by sensing a predetermined oil pressure in the second oil chamber that is sufficient for the ram to complete its retraction operation, and a predetermined oil pressure in the first and third oil chambers that is sufficient for the ram to complete its compression operation. A hydraulic compressor comprising: