JPS58124074A - Plunger reciprocating device - Google Patents
Plunger reciprocating deviceInfo
- Publication number
- JPS58124074A JPS58124074A JP720982A JP720982A JPS58124074A JP S58124074 A JPS58124074 A JP S58124074A JP 720982 A JP720982 A JP 720982A JP 720982 A JP720982 A JP 720982A JP S58124074 A JPS58124074 A JP S58124074A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- eccentric cam
- puller
- reciprocating device
- jar
- 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
- 238000005452 bending Methods 0.000 claims 1
- 244000208734 Pisonia aculeata Species 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はプランジャ往復動装置、詳細πはプラノジャポ
ンプ、流体モータ等に使用するプラノジャを往復運動さ
せる装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plunger reciprocating device, and the details π relate to a device for reciprocating a planar plunger used in a planar pump, fluid motor, or the like.
従来のこの種のプランジャ、例えハフランシャポツプに
使用するプラノジャのための往復動装置においては、駆
動シャフトに固着した偏心カムによりプランジャな周期
的にシリンダ内へ押込み（押込み行程）、一方シリンダ
内からプラン／ヤを引抜く（引戻し行程）ためにプラン
ジャ頭部を大径にしてこの頭部とシリノダ端又は適当な
ホデイとの間に圧縮バネを張設し、バネ力でプランジャ
の引戻しを行なっていた。また、プランジャを中空にし
てその中に圧縮バネな配置した型式のものく、ある。In a conventional reciprocating device for this type of plunger, for example a plunger used in a half-flank pump, the plunger is periodically pushed into the cylinder (pushing stroke) by an eccentric cam fixed to the drive shaft, while the cylinder In order to pull out the plunger from inside (pullback stroke), the plunger head is made large in diameter and a compression spring is placed between the head and the end of the cylinder or a suitable body, and the spring force pulls the plunger back. I was doing it. There is also a type in which the plunger is hollow and a compression spring is placed inside.
しかし、いずれにしても、従来のプランジャ往復動装置
においては、偏心カムが高速で回転する場合、プランジ
ャの引戻し行程ではバネ力によるプラノジャは偏心カム
の動きを追従で鎗ず（即ち、偏心カムの戻り行程の期間
内ではバネ力によるプランジャは完全に戻りきらず、そ
の前に偏心カムの次の押込み行程が開始してしまい）、
その結果プラノジャの行程容積が減少するばかりか、戻
りつつあるプランジャの頭部を押込み行程に変わった偏
心カムが激打し、プランジャ及び偏心カムの損傷や騒音
の原因となる。一方、このような欠点な除去するために
圧縮バネを強くすると、押込み行程での動力損失が大き
くなってしまう。更に、圧縮バネは１サイクル毎に圧縮
、膨張を繰返すので疲労によるバネ破損の原因な招く。However, in any case, in the conventional plunger reciprocating device, when the eccentric cam rotates at high speed, the planar plunger due to the spring force follows the movement of the eccentric cam during the retraction stroke of the plunger (i.e., During the return stroke, the plunger due to the spring force does not return completely, and the next pushing stroke of the eccentric cam starts before that.)
As a result, not only does the stroke volume of the planojar decrease, but the eccentric cam that has changed to the pushing stroke hits the head of the returning plunger, causing damage to the plunger and eccentric cam and noise. On the other hand, if the compression spring is made stronger in order to eliminate this drawback, the power loss during the pushing stroke will increase. Furthermore, since the compression spring repeats compression and expansion in each cycle, it may cause the spring to break due to fatigue.
そのうえ。Moreover.
バネの設置上、複雑化、大型化してしまう。The installation of the spring becomes complicated and large.
本発明の目的は、上述の従来のプランジャ往復動装置が
有する諸欠漬な克服したプランジャ往復動装置を提供す
ることである。An object of the present invention is to provide a plunger reciprocating device that overcomes the drawbacks of the conventional plunger reciprocating device described above.
本発明によれば、プランジャ往復動装置は、偏心カムに
装着してあってこのカムと連動しかつプランジャに連結
されたプランジャ引戻し部材（本明細書では、プラーと
呼ぶ）を具備する。プラーは偏心カムの回転に応じて実
質上直線的に往復運動し、その復路（プランジャの引戻
し行程に対応）においてプラーはプランジャを強制的に
引戻す。According to the invention, the plunger reciprocating device includes a plunger retraction member (referred to herein as a puller) mounted on and interlocking with the eccentric cam and connected to the plunger. The puller reciprocates substantially linearly in response to rotation of the eccentric cam, and on its return path (corresponding to the retraction stroke of the plunger), the puller forcibly retracts the plunger.
一方、フラー往復運動の往路（プランジャの押込み行程
に対応）においては、プラーはプランジャに直接作用せ
ず、偏心カムがプランジャ頭部に作用してプランジャを
シリンダ内に押込む。On the other hand, in the forward path of the Fuller reciprocating motion (corresponding to the pushing stroke of the plunger), the puller does not act directly on the plunger, but the eccentric cam acts on the plunger head to push the plunger into the cylinder.
図を用いて説明すると、第１，２図に示す本発明の一実
施例に係るプランジャ往復動装置１は、流体ポンプのプ
ランジャ２に適用したもので、プランジャ２は流体モー
タの本体４に設けたシリンダ６内で摺動できる。５は電
気モータ６の駆動シャフトで、その先端部はクランク室
７内に位置し。To explain using figures, a plunger reciprocating device 1 according to an embodiment of the present invention shown in FIGS. 1 and 2 is applied to a plunger 2 of a fluid pump, and the plunger 2 is installed in a main body 4 of a fluid motor. It can slide inside the cylinder 6. Reference numeral 5 denotes a drive shaft of an electric motor 6, the tip of which is located within the crank chamber 7.
この先端部には例えばビン８により偏心カム９が固着し
である。偏心カム９のまわりには軸受１０を設けるとよ
い。本発明のプランジャ往復動装置は、ブランシャ２を
強制的に引戻す（即ち第１゜２図で上方へ動かす）プラ
ー１１を備λでおり。An eccentric cam 9 is fixed to this tip by a pin 8, for example. It is preferable to provide a bearing 10 around the eccentric cam 9. The plunger reciprocating device of the present invention includes a puller 11 that forcibly pulls back the plunger 2 (that is, moves it upward in FIGS. 1-2).
二のプラーは、第３図に示すように、板をコの字状に折
曲した部材から成り、下方の折曲端部１２１・ではＵ字
状のスロット１６が設け℃ある。捷た。As shown in FIG. 3, the second puller is made of a plate bent into a U-shape, and a U-shaped slot 16 is provided at the lower bent end 121. I cut it.
Ｕ字状部材の基部１４の中央には長手方向の細長い孔１
５な設ける。プラー１１は偏心カム９を宛むよ５にして
クランク室７内で偏心カム９に装着されており、その際
シャフト５は細長い孔１５を貫通している。また、プラ
ー１１はその基部１４の背面及び２つの折曲部１２の先
端面がクランク室７の両側壁に溜って摺動するように位
置する。At the center of the base 14 of the U-shaped member is a longitudinally elongated hole 1.
5 will be provided. The puller 11 is mounted on the eccentric cam 9 in the crankcase 7 with a diagonal 5 facing the eccentric cam 9, the shaft 5 passing through an elongated hole 15. Further, the puller 11 is positioned such that the back surface of the base portion 14 and the tip surfaces of the two bent portions 12 are lodged on both side walls of the crank chamber 7 and slide thereon.
ブランシャ２（第１．２図）の頭部分１６には環状グル
ープ１７を設け、このグループにプラー１１の下部折曲
部１２のスロット１６を嵌入すること１ｔでよりプラン
ジャ２とプラー１１とを連結スる。The head portion 16 of the plunger 2 (Fig. 1.2) is provided with an annular group 17, and the slot 16 of the lower bent portion 12 of the puller 11 is inserted into this group, thereby connecting the plunger 2 and the puller 11 by 1t. Suru.
偏心カム９の外周面はプランジャ頭部分の頂部と保合し
ている。The outer peripheral surface of the eccentric cam 9 is aligned with the top of the plunger head.
本発明の装置によるプランジャ２の作動は次の、Ｉ−す
−りである。駆動シャフト５な回転させるとこれに固着
し、た偏心カム９も回転する。カム９の高い方のカム山
がプランジャ側へ来たときにはカムがプランジャ２の頭
部を押圧してプランジャ２なシリンダ乙の内部へ押込む
（押込み行程）。その際プラー１１もプランジャと一緒
に下方（第１゜２図）へ動く。一方、偏心カム９の高い
方のカム山がプラノジャから離れ始めると、この偏心カ
ムによりプラー１１が上方へ動かされ、それに伴なって
プラーに連結されたプランジャ２も上方へ引戻される。The operation of the plunger 2 by the device of the invention is as follows. When the drive shaft 5 is rotated, it is fixed to it and the eccentric cam 9 also rotates. When the higher cam crest of the cam 9 comes to the plunger side, the cam presses the head of the plunger 2 and pushes the plunger 2 into the inside of the cylinder B (pushing stroke). At this time, the puller 11 also moves downward (Fig. 1-2) together with the plunger. On the other hand, when the higher cam crest of the eccentric cam 9 begins to move away from the planar jar, the puller 11 is moved upward by the eccentric cam, and the plunger 2 connected to the puller is also pulled back upward.
従って、偏心カムが連続的に回転すれば、プラー１１と
プランジャ２は一体的に周期的な往復運動を行なう。Therefore, when the eccentric cam continuously rotates, the puller 11 and plunger 2 integrally perform periodic reciprocating motion.
第４図には本発明の別の実施例な示し、この実施例では
、プランジャ２に対向して第２のプランジャ２ａが設け
である。この第２プラ／ジヤ２ａは対応するシリンダ６
ａ内で摺動できる。この実施例の場合、プラー１１（第
５図）の上部折曲部１２ａは下部折曲部１２と同様にス
ロット１３ａを備え、このスロット１３ａを第２プラン
ジヤ２ａの頭部分１６ａに設けた環状グループ１７ａＫ
嵌入子々、ことにより、ブラー１１は第２ブラフジヤＶ
ζも連結されている。その他の構成は第１〜３図の実施
例と同じである。この実施例（第４，５図）の装置πお
いては、駆動シャツ）５により偏心カム９を回転させる
と、各プランジャは偏心カム９により押込み行程を行な
い、ブラー１１により引戻し行程を行なう。FIG. 4 shows another embodiment of the present invention, in which a second plunger 2a is provided opposite the plunger 2. This second plastic/jar 2a is connected to the corresponding cylinder 6.
It can slide within a. In this embodiment, the upper fold 12a of the puller 11 (FIG. 5), like the lower fold 12, is provided with a slot 13a, which is arranged in an annular group in the head part 16a of the second plunger 2a. 17aK
Inset children, possibly the blur 11 is the second blurring V
ζ is also connected. The rest of the structure is the same as the embodiment shown in FIGS. 1-3. In the device π of this embodiment (FIGS. 4 and 5), when the eccentric cam 9 is rotated by the driving shirt 5, each plunger performs a pushing stroke by the eccentric cam 9 and a pulling stroke by the blurr 11.
なお１以上の説明から明らかなように、偏心カムによる
プランジャの押込み行程においては、偏心カムが直接プ
ランジャ頭部を押圧し、プラーにはプラノジャを押圧す
る力が加わらないことに留意されたい。It should be noted that, as is clear from the above description, during the plunger pushing stroke by the eccentric cam, the eccentric cam directly presses the plunger head, and no force is applied to the puller to press the plunger.
また１図には示さないが、第６．５図に示したり１］き
ブラーを十字状に２個、又は互いに角度なずら→力で％
５個又はそれ以上設けそれに対応してプラノジャな設け
ることにより流体モータとして使用できる機構にしても
差支えない。Although it is not shown in Figure 1, it is shown in Figure 6.5.
There is no problem in creating a mechanism that can be used as a fluid motor by providing five or more and correspondingly planar sizes.
以１（ｆｌよ５な構成であるから１本発明のグラ／ジャ
往復動装置は、引戻し用の圧縮バネｆｆ″ｌ！ったく使
用けすに、偏心カムにてプランジャ押込み行程な、そし
てプラーによりプランジャ引戻し行程を確実に行なうの
で、圧縮バネを用いた従来の装置の前述の諸欠点？完全
に排除すると共に、最も大きな力を伝達する必要のある
プラノジャの押込み行程においては偏心カムが直接プラ
ンジャに作用しブラーには力が作用しないので軽量、安
価な材料でプラーを作ることができプラーの慣性力によ
る動力損失も極めて少ない。1 (Since it has a structure of 5), the glazer/jar reciprocating device of the present invention uses a compression spring ff''l! for pulling back, and the plunger is pushed in by an eccentric cam, and by a puller. Since the plunger retraction stroke is reliably carried out, the above-mentioned disadvantages of conventional devices using compression springs are completely eliminated, and the eccentric cam is directly applied to the plunger during the plunger retraction stroke, where the greatest force must be transmitted. Since no force acts on the puller, the puller can be made from lightweight and inexpensive materials, and power loss due to inertia of the puller is extremely small.
第１図は本発明の一実施例に係るグラ／ジャ往復動装置
の側断面図。第２図は第１図の■−■線における断面図
。第６図は第１図の装置のブラーの斜視図。第４図は本
発明の別の実施例に係る装置の断面端面図。第５図は第
４図の装置のプラーの斜視図である。
１ニブランジヤ往復動装置 ２ニブランジャ５：駆動シ
ャフト ９：偏心カム１１；フ゛ラ−
４７図
Ｌ２図
罵３（２１
簗、４ 図
手 続 補 正 書
１．事件の表示
昭和５７年特許願第 ７２０９ 号
２、発明の名称
プランジャ往復動装置
ろ、補正をする者
事件との関係 特許出願人
住所
名 称 東洋油圧機械株式会社
４、代理人
６補正の内容
（１）明細書第４頁第１５行目に記載の「流体モータ」
を、「流体ポンプ」に訂正する。
（２）明細書第５頁第７行目及び同頁第１７行目に記載
の「偏心カム９」を、「偏心カム９（軸受１０がある場
合はこれも含む）」に訂正する。
（３）明細書第６頁第５行目に記載の「プラー１１も」
を、「プラー１１も細長い孔１５とスロット１３にて案
内されて」に訂正する。
（４）明細書第７頁第１６行目に記載の１流体モータと
して」を、「流体ポンプだけでなく流体モータとしても
」に訂正する。
（５）図面の第４図を、添付図面におけるｍネ番如くに
訂正する。
１゜
以 」ニFIG. 1 is a side sectional view of a glazer/jar reciprocating device according to an embodiment of the present invention. FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1. 6 is a perspective view of the blur of the apparatus of FIG. 1; FIG. FIG. 4 is a cross-sectional end view of a device according to another embodiment of the invention. FIG. 5 is a perspective view of the puller of the device of FIG. 4; 1 Ni lunger reciprocating device 2 Ni lunger 5: Drive shaft 9: Eccentric cam 11; Filler 47 Figure L2 Figure 3 , Name of the invention: Plunger reciprocating device, Relationship with the case: Patent applicant address: Toyo Hydraulic Machinery Co., Ltd. 4, Agent 6: Contents of the amendment (1) Page 4, line 15 of the specification "Fluid motor" mentioned
should be corrected to "fluid pump". (2) "Eccentric cam 9" written on page 5, line 7 and line 17 of the same page of the specification is corrected to "eccentric cam 9 (including bearing 10, if any)". (3) "Puller 11 also" described on page 6, line 5 of the specification
is corrected to "The puller 11 is also guided by the elongated hole 15 and the slot 13." (4) "As a one-fluid motor" stated on page 7, line 16 of the specification is corrected to "as a fluid motor as well as a fluid pump." (5) Figure 4 of the drawings is corrected to read "m" in the attached drawings. 1° or more”
Claims (1)
−しめられるプラノジャのためのプランジャ往復動装置
において、偏心カムに装着されていて該偏口・カムの回
転運動に応じて実質上直線的に往復運動しかつプランジ
ャに連結されていて前記直線的な運動しτより該プラン
ジャを動かすブラーな設けて成ることを特徴とするブラ
フジャ往復動装置。 （２、特許請求の範囲第（１）項に記載のプランジャ往
復動装置において、前記プラーが、前記プラノジャの頭
部分に設けた環状グループ［嵌入するスロットを具備し
た第１折曲部と、前記駆動シャフトを神通し前記直線的
な運動方向に細長い孔を具備した基部とを有するコの字
状の部材から成ることな特徴とするブラフジャ往復動装
置。 に３） 特許請求の範囲第（２１項に記載のプランジ
ャ往復動装置において、前記プランジャに対向して第２
のプランジャな設け、前記コの字状の部材の第２折曲部
にも第２スロツトを設け、この第２スロントを該第２プ
ラ／ジヤの頭部分に設けた環状グループに、挿通するこ
とにより第２折曲部を第２プランジヤにも連結して成る
ことを特徴とするプラノジャ往復動装置。[Claims] In a plunger reciprocating device for a plunger which is operated by an eccentric cam fixed to a moving shaft, the plunger is attached to an eccentric cam and is actuated according to the rotational movement of the eccentric cam. A bluff jar reciprocating device characterized in that it comprises a blur which reciprocates substantially linearly and is connected to a plunger to move said plunger by said linearly movable τ. (2) In the plunger reciprocating device according to claim (1), the puller includes an annular group provided in the head portion of the planar plunger [a first bent portion provided with a slot to fit into the first bent portion; A bluff jar reciprocating device characterized by comprising a U-shaped member having a base portion having an elongated hole extending in the linear movement direction through which the drive shaft passes. In the plunger reciprocating device according to
a plunger, the second bent portion of the U-shaped member is also provided with a second slot, and the second slot is inserted into the annular group provided in the head portion of the second plastic/jar. A plano jar reciprocating device characterized in that the second bending portion is also connected to the second plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP720982A JPS58124074A (en) | 1982-01-20 | 1982-01-20 | Plunger reciprocating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP720982A JPS58124074A (en) | 1982-01-20 | 1982-01-20 | Plunger reciprocating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58124074A true JPS58124074A (en) | 1983-07-23 |
Family
ID=11659610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP720982A Pending JPS58124074A (en) | 1982-01-20 | 1982-01-20 | Plunger reciprocating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58124074A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63289272A (en) * | 1987-05-20 | 1988-11-25 | Tokico Ltd | hydraulic pump |
| US5848566A (en) * | 1995-11-21 | 1998-12-15 | Wagner Spray Tech Corporation | Connecting pin clip |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5479804A (en) * | 1977-12-01 | 1979-06-26 | Lear Siegler Inc | Multicylinder pump and fluid pump device |
-
1982
- 1982-01-20 JP JP720982A patent/JPS58124074A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5479804A (en) * | 1977-12-01 | 1979-06-26 | Lear Siegler Inc | Multicylinder pump and fluid pump device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63289272A (en) * | 1987-05-20 | 1988-11-25 | Tokico Ltd | hydraulic pump |
| US5848566A (en) * | 1995-11-21 | 1998-12-15 | Wagner Spray Tech Corporation | Connecting pin clip |
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