JPS6312278Y2 - - Google Patents
Info
- Publication number
- JPS6312278Y2 JPS6312278Y2 JP1983001196U JP119683U JPS6312278Y2 JP S6312278 Y2 JPS6312278 Y2 JP S6312278Y2 JP 1983001196 U JP1983001196 U JP 1983001196U JP 119683 U JP119683 U JP 119683U JP S6312278 Y2 JPS6312278 Y2 JP S6312278Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- case
- spherical body
- rotary valve
- supported
- 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
Links
- 239000012530 fluid Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Multiple-Way Valves (AREA)
- Taps Or Cocks (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案はロータリ弁に関する。[Detailed explanation of the idea] [Industrial application field] The present invention relates to a rotary valve.
かかるロータリ弁においては、従来、ロータを
ロータ収納ケースに対して回転自在に支承するに
あたつて、ポートが形成されているロータ本体の
外周面をケース内周面に対して摺動可能に受止め
て支承すると、ロータを回動操作するときに、ロ
ータに形成したポートとケース内周面に形成した
ポンプ側出口とが連通していないような状態にお
いて、ポンプ側作動流体の圧力によつて、ロータ
が径方向に押圧されてケース内面に圧接され、ロ
ータの外周面とケース内周面との間に作用する摩
擦抵抗が増大して、大きな操作力を要する問題が
生じるので、例えば、実開昭50−49725号公報に
記載されているように、ロータ本体の端面に支軸
を連設し、この支軸をボールを介してケース内周
面に支承して操作力を極力軽減するように構成し
ていた。
Conventionally, in such rotary valves, when the rotor is rotatably supported in the rotor storage case, the outer circumferential surface of the rotor body in which ports are formed is slidably received against the inner circumferential surface of the case. If the rotor is stopped and supported, when the rotor is rotated and the port formed on the rotor and the pump side outlet formed on the inner peripheral surface of the case are not communicating, the pressure of the working fluid on the pump side , the rotor is pressed in the radial direction and pressed against the inner surface of the case, increasing the frictional resistance acting between the outer circumferential surface of the rotor and the inner circumferential surface of the case, causing a problem that requires a large operating force. As described in Japanese Patent Publication No. 50-49725, a support shaft is provided on the end face of the rotor body, and this support shaft is supported on the inner circumferential surface of the case via balls to reduce the operating force as much as possible. It was composed of
しかし、支軸の周面に沿つて装着した多数のボ
ールを介してロータを支承するものであるため、
ロータリ弁のロータ軸芯方向の寸法が大きくなつ
て大型化するとともに、ロータの位置がロータ軸
芯方向にずれ易く、構造自体も複雑化して製作組
付けにも手間がかかる問題があつた。
However, since the rotor is supported via a large number of balls attached along the circumference of the spindle,
The dimensions of the rotary valve in the direction of the rotor axis have increased and the size has increased, and the rotor position has been prone to shift in the direction of the rotor axis, making the structure itself complicated and requiring time and effort to manufacture and assemble.
本考案は上記実情に鑑みて為されたものであつ
て、ロータの回転操作力を軽減できるものであり
ながら、ロータリ弁をコンパクトに形成するとと
もに、ロータの位置ずれが生じにくく、構造自体
も単純化して製作組付けが容易に行えるようにす
ることを目的とする。 The present invention was developed in view of the above-mentioned circumstances, and while it can reduce the rotational operating force of the rotor, it also makes the rotary valve compact, prevents the rotor from shifting, and has a simple structure. The purpose is to make manufacturing and assembly easier.
上記目的を達成するための本考案によるロータ
リ弁の特徴構成は、ロータのケース内端面とそれ
に対向するケースの内面との夫々に、奥側ほど内
径が小さくなる円形の凹入部を、ロータの回転軸
芯と同芯上に形成し、前記両凹入部の間に球状体
を前記ロータの回転軸芯と同芯上に介在させて、
前記ロータのケース内端面を前記球状体を介して
前記ケースの内面に支承してある点にあり、かか
る構成から次の作用効果を奏する。
The characteristic structure of the rotary valve according to the present invention to achieve the above object is that the inner end surface of the rotor case and the inner surface of the case opposite thereto are each provided with circular recesses whose inner diameters become smaller toward the back. a spherical body is formed concentrically with the axis of the rotor, and a spherical body is interposed between the two recesses so as to be concentric with the axis of rotation of the rotor;
The inner end surface of the case of the rotor is supported on the inner surface of the case via the spherical body, and this structure provides the following effects.
即ち、ロータの外周面をケース内周面に対して
摺動可能に受止めて支承するのではなく、ロータ
の端面を球状体を介してロータの回転軸芯と同芯
上にケース内面に支承するので、ロータとケース
との相対的な接触面積が少なく、接触抵抗を減少
できるとともに、ポンプ側作動流体の圧力がロー
タ外周面に作用しても、その反力が球状体を介し
てケースに伝達されるので、ロータ外周面とケー
ス内周面との間の摩擦力が増大せず、ロータ操作
の為の操作力を軽減できるものであるが、本考案
は特に、ロータの内端面とこれに対向するケース
内面とに夫々凹入部を形成し、これら凹入部間に
挾まれる状態で球状体を介在させてロータを支承
するものであるので、単に球状体を介してロータ
を少ない接触面積でケースに支承するだけでな
く、球状体を支軸に兼用する状態の簡単な構造で
支承できるとともに、凹入部間に球状体を介在さ
せることによつて、ロータリ弁自体のロータ軸芯
方向寸法を小さくでき、しかも、ロータの軸芯方
向位置が、球状体を介してのケース内面との接当
によつて確実に規制される。
In other words, instead of supporting the outer peripheral surface of the rotor by slidably receiving it against the inner peripheral surface of the case, the end surface of the rotor is supported on the inner surface of the case coaxially with the rotational axis of the rotor via a spherical body. Therefore, the relative contact area between the rotor and the case is small, reducing contact resistance, and even if the pressure of the working fluid on the pump side acts on the outer circumferential surface of the rotor, the reaction force is transmitted to the case via the spherical body. As a result, the frictional force between the outer circumferential surface of the rotor and the inner circumferential surface of the case does not increase, and the operating force for operating the rotor can be reduced. A recess is formed on the inner surface of the case facing the inner surface of the case, and the rotor is supported with a spherical body sandwiched between these recesses. Therefore, the rotor is simply supported through the spherical body with a small contact area. Not only can it be supported in the case, but it can also be supported with a simple structure in which the spherical body also serves as the support shaft, and by interposing the spherical body between the recessed parts, the rotor axis direction dimension of the rotary valve itself can be reduced. In addition, the axial position of the rotor is reliably regulated by contact with the inner surface of the case via the spherical body.
従つて、ロータの回転操作力を軽減できるもの
でありながら、ロータリ弁をコンパクトに形成で
きるとともに、ロータ自体の位置ずれが生じにく
く、支承構造も単純化できて製作組付けが楽に行
えるに至つた。
Therefore, the rotary valve can be formed compactly while reducing the rotational operating force of the rotor, the rotor itself is less likely to shift its position, and the support structure can be simplified, making manufacturing and assembly easier. .
以下、本考案の実施例を図面に基づいて説明す
る。
Hereinafter, embodiments of the present invention will be described based on the drawings.
第１図に示すように、向き変更操作自在な左右
前輪１、及び、左右後輪２を備え、且つ、運転席
３、及び、エンジン４を設けた乗用車体の後部
に、苗植付装置５をリンク機構６により昇降自在
に連結すると共に、苗植付装置昇降操作用の単動
型流体圧シリンダ７を、前記リンク機構６に作用
させる状態で設け、もつて、乗用型田植機を構成
してある。 As shown in FIG. 1, a seedling planting device 5 is installed at the rear of a passenger vehicle body that is equipped with left and right front wheels 1 and left and right rear wheels 2 that can be freely changed in direction, and is also provided with a driver's seat 3 and an engine 4. are connected by a link mechanism 6 so that they can be raised and lowered, and a single-acting hydraulic cylinder 7 for raising and lowering the seedling planting device is provided in a state where it acts on the link mechanism 6, thereby constructing a riding rice transplanter. There is.
第２図に示すように、流体圧ポンプ８をエンジ
ン４に連結すると共に、そのポンプ８と前記シリ
ンダ７を接続する流路中に、苗植付装置昇降速度
を２段に変更するように、流量調節用の２種類の
流路r1，r2を択一的に開くロータリ弁９、及び、
前記流路を開閉する２位置切換弁１０を、直列状
態で介在してある。そして、前記シリンダ７に対
するスライドスプール型の制御弁１１を構成する
に、上昇位置U1、中立位置N1、及び、下降位置
D1を設けると共に、上昇位置U1と中立位置N1と
の間に、圧油をタンク１２へ戻すための開口面積
と圧油をシリンダ７に供給するための開口面積が
スプールの作動に伴つて一方が増大すると他方が
小となるように変更される自動制御用の緩速昇降
用位置Ｇを設けてある。 As shown in FIG. 2, a fluid pressure pump 8 is connected to the engine 4, and in a flow path connecting the pump 8 and the cylinder 7, a device is installed so as to change the raising and lowering speed of the seedling planting device into two stages. A rotary valve 9 that selectively opens two types of flow paths r 1 and r 2 for flow rate adjustment, and
A two-position switching valve 10 for opening and closing the flow path is interposed in series. The slide spool type control valve 11 for the cylinder 7 is configured with a raised position U 1 , a neutral position N 1 , and a lowered position
D 1 is provided, and an opening area for returning pressure oil to the tank 12 and an opening area for supplying pressure oil to the cylinder 7 are provided between the raised position U 1 and the neutral position N 1 as the spool operates. A slow lifting position G for automatic control is provided so that when one side increases, the other side decreases.
前記制御弁１１の操作構造について説明すれ
ば、スプールを上昇位置Ｕ側へのみ係止移動させ
る昇降操作レバー１３を設けると共に、スプール
を上昇位置Ｕ側及び下降位置Ｄ側へのいずれにも
係止移動自在な自動昇降制御用の係止アーム１４
を、スプリング１５によつて上昇操作側へ付勢し
て設けてある。そして、前記苗植付装置５に、後
端側の横軸心Ｘ周りで上下揺動自在にフロート１
６を枢支すると共に、そのフロート１６の前端部
と苗植付装置５とを連動連結する屈伸リンク１７
を、フロート１６が下降するに伴つて前記係止ア
ーム１４を下降操作側に操作するようにワイヤ１
８を介して連動連結し、もつて、昇降操作レバー
１３をスプールから外れた自動昇降位置Ａに操作
した状態においては、フロート１６の上下動に基
づいて制御弁１１を自動操作して、フロート前端
部の苗植付装置５に対する上下位置、つまり、植
付深さを設定範囲内に維持させるように、苗植付
装置５を自動昇降させることができるように構成
し、又、昇降操作レバー１３を上昇位置Ｕ、中立
位置Ｎ、及び、下降位置Ｄに切換操作するに伴つ
て、苗植付装置５を任意に昇降させることができ
るようにしてある。 To explain the operation structure of the control valve 11, there is provided a lift operation lever 13 that locks and moves the spool only to the raised position U side, and also locks the spool to both the raised position U side and the lowered position D side. Freely movable locking arm 14 for automatic lifting control
is biased toward the upward operation side by a spring 15. A float 1 is attached to the seedling planting device 5 so as to be vertically swingable around the horizontal axis X on the rear end side.
A flexible link 17 that pivotally supports the float 16 and operatively connects the front end of the float 16 and the seedling planting device 5.
The wire 1 is connected so as to operate the locking arm 14 to the lowering operation side as the float 16 descends.
8, and when the lift operation lever 13 is operated to the automatic lift position A away from the spool, the control valve 11 is automatically operated based on the vertical movement of the float 16, and the front end of the float is The seedling planting device 5 is configured to be able to be raised and lowered automatically so as to maintain the vertical position of the seedling planting device 5 with respect to the seedling planting device 5, that is, the planting depth within a set range. As the seedling planting device 5 is switched to the raised position U, the neutral position N, and the lowered position D, the seedling planting device 5 can be raised or lowered as desired.
但し、昇降操作レバー１３による下降操作は、
フロート１６の下降力にて制御弁１１を操作して
行なうものであるから、フロート１６が弁１１に
対する下降操作範囲内に位置する時にのみ行なえ
ることになる。 However, the lowering operation using the lifting operation lever 13
Since this operation is performed by operating the control valve 11 using the descending force of the float 16, it can only be performed when the float 16 is located within the descending operation range for the valve 11.
又、フロート１６の上下動に基づいて自動昇降
を行なう際において、通常は、スプールを微小ス
トロークで移動させるようにしながら緩速昇降用
位置Ｇにおいて昇降操作することになるが、フロ
ート１６が大きな範囲で上下動すると上昇位置
U1や下降位置D1にも操作されることになり、そ
して、それに伴ない中立位置N1に操作される状
態がもたらされることもある。 In addition, when automatically raising and lowering the float 16 based on the vertical movement of the float 16, normally the spool is moved in minute strokes and the raising and lowering operation is performed at the slow raising and lowering position G. When you move up and down with
It will also be operated to U 1 and lowered position D 1 , and along with this, a state may be brought about in which it is operated to neutral position N 1 .
前記ロータリ弁９について、第３図及び第４図
について説明すれば、ロータ９Ａに、前記流量調
節用の２種類の流路r1，r2を形成すると共に、ロ
ータ収納ケース９Ｂに、前記流路r1，r2から漏れ
た流体を回収してタンクに戻すためのドレン流路
r3を形成してある。そして、ロータ９Ａのケース
外突出部分に、操作アーム１９を一体回転するよ
う取付け、その操作アーム１９を流量増大操作側
へ付勢するスプリング２０を設けると共に、前記
昇降操作レバー１３を、自動昇降位置Ａに操作す
るに伴つてロータリ弁９を流量減少側へ操作する
ように、ワイヤ２１及び長孔付連係金具２１Ａを
介して前記操作アーム１９に連動連結し、もつ
て、自動昇降制御時における昇降速度をハンチン
グ防止のために低速にすることができるように構
成してある。 Regarding the rotary valve 9, referring to FIGS. 3 and 4, two types of flow paths r 1 and r 2 for adjusting the flow rate are formed in the rotor 9A, and the flow paths r 1 and r 2 are formed in the rotor storage case 9B. Drain channel for collecting fluid leaking from channels r 1 and r 2 and returning it to the tank
r 3 is formed. An operating arm 19 is attached to a protruding portion outside the case of the rotor 9A so as to rotate integrally with the operating arm 19, and a spring 20 is provided for biasing the operating arm 19 toward the flow rate increasing operation side. A, the rotary valve 9 is connected to the operating arm 19 via the wire 21 and the connecting fitting 21A with an elongated hole so that the rotary valve 9 is operated to the flow rate decreasing side when the valve is operated in the direction A. It is configured so that the speed can be reduced to prevent hunting.
又、前記ロータ９Ａのケース内端面とそれに対
向するケース内面との夫々に、ロータ９Ａの回転
軸芯と同芯上に円錐状の凹入部９Ｃを形成し、こ
れら両凹入部９Ｃ，９Ｃ間に係合する状態で、且
つ、ロータ９Ａの回転軸芯上に位置させる状態で
鋼製等の球状体２２を介在させ、もつて、ロータ
９Ａを球状体２２を介してケース内面に支承する
ように構成してある。 Further, a conical recess 9C is formed on the inner end surface of the case of the rotor 9A and the inner surface of the case opposite thereto, respectively, coaxially with the rotational axis of the rotor 9A, and a conical recess 9C is formed between the two recesses 9C, 9C. A spherical body 22 made of steel or the like is interposed in the engaged state and positioned on the rotational axis of the rotor 9A, so that the rotor 9A is supported on the inner surface of the case via the spherical body 22. It is configured.
本考案は、流量減少側へ操作された時に、流量
調節用のロータ９Ａがケース９Ｂに強く圧接され
る傾向となる流量調節用のロータリ弁９に特に好
適であるが、方向制御のためのロータリ弁等にも
適用できる。尚、実用新案登録請求の範囲の項に
図面との対照を便利にする為に符号を記すが、該
記入により本考案は添付図面の構造に限定される
ものではない。
The present invention is particularly suitable for a rotary valve 9 for flow rate adjustment in which the rotor 9A for flow rate adjustment tends to come into strong pressure contact with the case 9B when the rotor 9A for flow rate adjustment is operated to the flow rate reduction side. It can also be applied to valves, etc. Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.
図面は本考案に係るロータリ弁の実施例を例示
し、第１図は乗用型田植機の側面図、第２図は苗
植付装置昇降操作構造を示す概略図、第３図はロ
ータリ弁の縦断側面図、第４図は同弁と昇降操作
レバーとの連係図である。
９Ａ……ロータ、９Ｂ……ケース、９Ｃ……凹
入部、２２……球状体、r1，r2……流量調節用流
路。
The drawings illustrate an embodiment of the rotary valve according to the present invention, FIG. 1 is a side view of a riding rice transplanter, FIG. 2 is a schematic diagram showing the lifting and lowering operation structure of the seedling planting device, and FIG. 3 is a diagram of the rotary valve. The vertical side view, FIG. 4, is a diagram showing the relationship between the valve and the lifting/lowering operating lever. 9A...rotor, 9B...case, 9C...recessed portion, 22...spherical body, r1 , r2 ...flow rate adjustment flow path.
Claims (1)
ケース９Ｂの内面との夫々に、奥側ほど内径が
小さくなる円形の凹入部９Ｃを、ロータ９Ａの
回転軸芯と同芯上に形成し、前記両凹入部９
Ｃ，９Ｃの間に球状体２２を前記ロータ９Ａの
回転軸芯と同芯上に介在させて、前記ロータ９
Ａのケース内端面を前記球状体２２を介して前
記ケース９Ｂの内面に支承してあるロータリ
弁。 ２ 前記ロータ９Ａに、流量調節用の複数種の流
路r1，r2を備えさせてある実用新案登録請求の
範囲第１項に記載のロータリ弁。[Claims for Utility Model Registration] 1. A circular recess 9C, whose inner diameter becomes smaller toward the back, is formed on each of the inner end surface of the case 9A of the rotor 9A and the inner surface of the case 9B opposite thereto. formed on the core, and the double recessed portion 9
A spherical body 22 is interposed between C and 9C coaxially with the rotation axis of the rotor 9A, and the rotor 9
A rotary valve in which the inner end surface of the case A is supported on the inner surface of the case 9B via the spherical body 22. 2. The rotary valve according to claim 1, wherein the rotor 9A is provided with a plurality of flow paths r 1 and r 2 for flow rate adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP119683U JPS59107374U (en) | 1983-01-07 | 1983-01-07 | rotary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP119683U JPS59107374U (en) | 1983-01-07 | 1983-01-07 | rotary valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59107374U JPS59107374U (en) | 1984-07-19 |
| JPS6312278Y2 true JPS6312278Y2 (en) | 1988-04-08 |
Family
ID=30132927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP119683U Granted JPS59107374U (en) | 1983-01-07 | 1983-01-07 | rotary valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59107374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009063401A (en) * | 2007-09-06 | 2009-03-26 | Shigeru Yashima | Mass flow meter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5049725U (en) * | 1973-08-31 | 1975-05-15 |
-
1983
- 1983-01-07 JP JP119683U patent/JPS59107374U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009063401A (en) * | 2007-09-06 | 2009-03-26 | Shigeru Yashima | Mass flow meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59107374U (en) | 1984-07-19 |
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