JPH01130073A - Axial piston machine - Google Patents

Axial piston machine

Info

Publication number
JPH01130073A
JPH01130073A JP62287999A JP28799987A JPH01130073A JP H01130073 A JPH01130073 A JP H01130073A JP 62287999 A JP62287999 A JP 62287999A JP 28799987 A JP28799987 A JP 28799987A JP H01130073 A JPH01130073 A JP H01130073A
Authority
JP
Japan
Prior art keywords
swash plate
oil
oil supply
sliding surface
inclination
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.)
Granted
Application number
JP62287999A
Other languages
Japanese (ja)
Other versions
JPH0468472B2 (en
Inventor
Kazunori Kawafune
川舟 一徳
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP62287999A priority Critical patent/JPH01130073A/en
Publication of JPH01130073A publication Critical patent/JPH01130073A/en
Publication of JPH0468472B2 publication Critical patent/JPH0468472B2/ja
Granted legal-status Critical Current

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  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)

Abstract

PURPOSE:To restrain useless oil consumption during oil supply by introducing the control pressure for controlling an angle of inclination of a swash plate between the faced surfaces of the swash plate and the main body of a machine. CONSTITUTION:When a swash plate 7 is changed in its angle of inclination, the oil from a control pressure line for changing the angle of inclination is supplied between a cylindrical receiving surface 80 and a sliding surface 70 via an oil supply conduit 10. The supplied oil serves as floating power to float the sliding surface 70 of the swash plate 7 from the receiving surface 80 and also to form an oil film between the receiving 80 and the sliding surface 70. In such a case that the swash plate 7 rests at the maximum inclinating position, oil supply is never performed. Accordingly, useless oil consumption in oil supply can be restrained.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、円筒滑り面をもつスワッシュプレートを機械
本体側の円筒受面に接触させて傾斜角度を制御する所謂
クレイドルタイプのアキシャルピストン機械に関する。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to a so-called cradle-type axial piston machine in which a swash plate having a cylindrical sliding surface is brought into contact with a cylindrical receiving surface on the machine body side to control the inclination angle. .

(従来の技術) 従来、この種ピストン機械では、特開昭61−2323
89号公報に開示され、又、第5図に概略示すように、
スワッシュプレート(S)における円筒滑り面(X)と
、機械本体側の円筒受面(Y)との間の摺動を滑らかに
するために、シリンダブロック(C)に介装されるピス
トン(P)頭部に開口した給油孔(D)を、スワソンユ
プレー) (S)の背面側油溜部(0)に連通させる給
油路(G)を設けて、ピストン内室(H) 内の油を前
記滑り面(X)と受面(Y)との対向面間に供給するよ
うにしている。
(Prior art) Conventionally, in this type of piston machine, Japanese Patent Application Laid-Open No. 61-2323
As disclosed in Japanese Patent No. 89 and schematically shown in FIG.
In order to smooth the sliding movement between the cylindrical sliding surface (X) on the swash plate (S) and the cylindrical receiving surface (Y) on the machine body side, a piston (P) is installed in the cylinder block (C). ) An oil supply passage (G) is provided to communicate the oil supply hole (D) opened in the head with the oil reservoir (0) on the back side of the Swasonyu plate (S), and the oil in the piston inner chamber (H) is It is supplied between the opposing surfaces of the sliding surface (X) and the receiving surface (Y).

(発明が解決しようとする問題点) ところが、上記のものでは、シリンダブロック(C)の
回転に伴い、ピストン(P)の頭部に開口した給油孔(
D)がスワッンユプレート(S)側に設けた給油路(G
)と付合するたび毎に、ピストン内室(H)内の油が、
給油路(G)を介して、前記滑り面(X)と受面(Y)
との対向面間に供給されるから、換言すると、スワッシ
ュプレート(S)の傾斜角度いかんに拘わらずシリンダ
ブロック(C)が回転している限り常時給油が行われる
から、例えばポンプにあってスワッシュプレート(S)
が最大傾斜位置にあり、最大吐出口で運転している場合
にも、給油量相当の油が前記内室(H)からの漏れてし
まうこととなって、効率低下を招く難が起こり得るので
あった。
(Problems to be Solved by the Invention) However, in the above-mentioned device, as the cylinder block (C) rotates, the oil supply hole (
D) is the oil supply path (G) provided on the Swan Yu plate (S) side.
), the oil in the piston inner chamber (H) will
The sliding surface (X) and the receiving surface (Y) are connected through the oil supply path (G).
In other words, regardless of the angle of inclination of the swash plate (S), as long as the cylinder block (C) is rotating, oil is constantly supplied. Plate (S)
Even when the pump is at the maximum inclination position and the pump is operating at the maximum discharge port, oil equivalent to the amount of oil supplied will leak from the inner chamber (H), which may cause a problem that reduces efficiency. there were.

本発明では、スワンシュプレートがその傾斜角度を変化
する時、つまり円筒滑り而と受面との対向面間で摺動が
行われ、真に給油が必要な時にのみ、スワッシュプレー
トの傾斜角度制御を行わしめる制御圧力を対向面間に導
入することにより、効率低下を抑制できながら、その摺
動が滑らかに行えるようにしたアキシャルピストン機械
を提供することを目的とする。
In the present invention, the inclination angle of the swash plate is controlled only when the swansh plate changes its inclination angle, that is, when sliding occurs between the facing surfaces of the cylindrical sliding member and the receiving surface, and only when lubrication is truly necessary. An object of the present invention is to provide an axial piston machine that can smoothly slide while suppressing a decrease in efficiency by introducing a control pressure between opposing surfaces.

(問題点を解決するための手段) そこで本発明は、多数のピストン(5a)をもつシリン
ダブロック(5)と、前面に前記ピストン(5a)の頭
部側を接触させる接触面部(7a)をもち、背面に、機
械本体(1)側に設ける円筒受面(80)と対向する円
筒滑り面(70)をもったスワッシュプレート(7)と
を備え、該スワッシュプレート(7)の傾斜角度を制御
するようにしたアキシャルピストン機械において、前記
受面(80)と滑り面(70)との対向面間に、前記ス
ワッシュプレート(7)の傾斜角度を制御する制御圧力
ラインから延びる給油路(10)を開口させていること
を特徴とするものである。
(Means for Solving the Problems) Therefore, the present invention provides a cylinder block (5) having a large number of pistons (5a), and a contact surface portion (7a) that brings the head side of the pistons (5a) into contact with the front surface. The grip is equipped with a swash plate (7) on the back side having a cylindrical receiving surface (80) provided on the machine body (1) side and a cylindrical sliding surface (70) opposite to the swash plate (7), and the inclination angle of the swash plate (7) is In the axial piston machine, an oil supply passage (10) extending from a control pressure line for controlling the inclination angle of the swash plate (7) is provided between opposing surfaces of the receiving surface (80) and the sliding surface (70). ) is open.

(作用) スワッシュプレート(7)0が傾斜角度を変更する時、
給油路(10)を介して円筒受面(80)と滑り而(7
0)との間には、その傾斜角度を変更せしめる制御圧力
ラインからの油が供給される。この供給油は、スワッシ
ュプレート(7)の滑り面(70)を受面(8o)から
浮き上がらせる浮上刃として作用すると共に、受面(8
o)と滑り面(70)との間に油膜を形成することにな
り、スワッシュプレート(7)は、流体潤滑された状態
で滑らかに傾転できることになる。この給油が行われる
のは、正に受面(8o)と滑り面(70)との間で摺動
が行われる時のみで、スワツシユプレート(7)が最大
傾斜位置で静止しているような場合には給油は行われず
、従って、給油に伴う無駄な油消費が抑制でき、効率低
下の問題が解消できる。
(Function) When swash plate (7)0 changes the inclination angle,
The cylindrical receiving surface (80) and the sliding body (7) are connected to each other via the oil supply path (10).
0), oil is supplied from a control pressure line that changes the angle of inclination. This supplied oil acts as a floating blade that lifts the sliding surface (70) of the swash plate (7) from the receiving surface (8o), and also
An oil film is formed between the sliding surface (70) and the sliding surface (70), and the swash plate (7) can tilt smoothly in a fluid-lubricated state. This oiling is performed only when sliding occurs between the receiving surface (8o) and the sliding surface (70), so that the swash plate (7) remains stationary at the maximum tilt position. In such cases, refueling is not performed, and therefore, wasteful oil consumption associated with refueling can be suppressed, and the problem of reduced efficiency can be solved.

(実施例) 第2図において、(1)は機械本体であり、フロント及
びリア軸受(2a)(2b)を介して軸支する主軸(4
)に、多数のピストン(5a)をもつシリンダブロック
(5)をスプライン部(55)を介して結合すると共に
、該ブロック(5)のフロント側に、前面にピストン(
5a)の頭部をシュー(6)を介して接触させる接触面
部(7a )をもつスワツシユプレート(7)を配設し
、その背面側に設ける円筒滑り而(7o)を、機械本体
(1)に固定するホルダー(8)の円筒受面(80)に
摺接させている。
(Example) In Fig. 2, (1) is the main body of the machine, and the main shaft (4) is supported via front and rear bearings (2a) (2b).
), a cylinder block (5) having a large number of pistons (5a) is coupled to the block (5) via a spline portion (55), and a piston (5a) is attached to the front side of the block (5).
A swash plate (7) having a contact surface portion (7a) that makes contact with the head of the machine body (5a) via a shoe (6) is provided, and a cylindrical slide (7o) provided on the back side of the swash plate (7) is connected to the machine body (1). ) is in sliding contact with the cylindrical receiving surface (80) of the holder (8).

11町記スワツンユプレート(7)は、/リンダブロッ
ク(5)と主軸(4)との間に介装するスプリング(1
1)と、これに付勢されるピン(110)及び抑圧体(
120)により弾性的に保持され、駆動時は、スプリン
グ(11)の抑圧力と、ピストン内室(5b)に作用す
る圧力とによす、ホルダー(8)に付勢される。
11 The swatunyu plate (7) is a spring (1) interposed between the cylinder block (5) and the main shaft (4).
1), a pin (110) biased by this, and a suppressor (
120), and when driven, is urged against the holder (8) by the suppressing force of the spring (11) and the pressure acting on the piston inner chamber (5b).

前記シュー(6)は、端部に一体化する球体(60)を
介して、ピストン(5a)の頭部に首振り自由に取り付
けられ、各々のシュー(6)はリテイナ(13)により
保持される。
The shoes (6) are swingably attached to the head of the piston (5a) via a sphere (60) integrated at the end, and each shoe (6) is held by a retainer (13). Ru.

シリンダブロック(5)のリヤ側と、エンドキャップ(
100)との間には、吐出ライン(A)に通じる高圧ボ
ート(12a)と、吸入うイン(B)に通じる低圧ボー
ト(12b)とを備えたバルブプレート(12)が介装
される。
The rear side of the cylinder block (5) and the end cap (
A valve plate (12) is interposed between the high pressure boat (12a) communicating with the discharge line (A) and the low pressure boat (12b) communicating with the suction pipe (B).

前記円筒滑り面(70)は、第3図に明示するように、
前記バルブプレート(12)の高圧ボー) (12a)
に対応する高圧側滑り面(71)と、低圧ボー)(12
b)に対応する低圧側滑り面(72)とを一対に備える
。又、これに対応させて前記円筒受面(80)も、第4
図に示すように、高圧側受面(81)と低圧側受面(8
2)とを一対に備える。そして、スワッシュプレート(
7)及びホルダー(8)に形成するインロ一部(73)
(83)をガイドにして、各対向面間(71と81.7
2と82)で円弧状の摺動を行うようにしている。
The cylindrical sliding surface (70), as clearly shown in FIG.
High pressure bow of said valve plate (12) (12a)
The high pressure side sliding surface (71) corresponding to the low pressure bow) (12)
A pair of low pressure side sliding surfaces (72) corresponding to b) are provided. Correspondingly, the cylindrical receiving surface (80) also has a fourth
As shown in the figure, the high pressure side receiving surface (81) and the low pressure side receiving surface (81)
2) are provided as a pair. And the swash plate (
7) and a part of the inlet (73) formed on the holder (8)
(83) as a guide, between each opposing surface (71 and 81.7
2 and 82) to perform arcuate sliding.

又、前記スワッシュプレート(7)は、上端に一体化す
るブラケット(74)に、第1図に示すように連結アー
ム(50)を固定し、該アーム(50)を介して、例え
ばプレッシャコンペンセータバルブ(以下PC弁という
)(3)により制御される操作プランツヤ(9)に連動
され、その傾斜角度を図中仮想線(m)で示す最大傾斜
位置から図示の中立位置にわたって制御し、ポンプにお
いては吐出量を、又モータにおいては回転数をそれぞれ
調整できるようになっている。
Further, the swash plate (7) has a connecting arm (50) fixed to a bracket (74) integrated at the upper end thereof, as shown in FIG. (hereinafter referred to as PC valve) (3), the inclination angle of the pump is controlled from the maximum inclination position shown by the imaginary line (m) to the neutral position shown in the figure. It is possible to adjust the discharge amount and the rotation speed of the motor.

前記PC弁(3)は、弁孔(30)内に摺動するスプー
ル(31)及びこれに対抗する抑圧体(32)を備え、
弁孔(30)の−次側を吐出ライン(A)に、二次側を
操作プランジャ(9)を移動せしめる制御圧力の導入室
(45)に、又、三次側をタンクライン(T)にそれぞ
れ接続しており、吐出ライン(A)の圧力が抑圧体(3
2)による設定圧力以上になると、スプール(31)を
図示の位置に移動させて、導入室(45)に吐出ライン
(A)からの吐出流体を導入するようになっている。尚
、吐出ライン(A)の圧力が抑圧体(32)による設定
圧力よりも小さい場合には、導入室(45)はタンクラ
イン(T)に開放される。又、抑圧体(32)による設
定圧力は、調節ネジ(33)により可変である。
The PC valve (3) includes a spool (31) that slides in the valve hole (30) and a suppressor (32) that opposes the spool (31),
The negative side of the valve hole (30) is connected to the discharge line (A), the secondary side is connected to the control pressure introduction chamber (45) for moving the operating plunger (9), and the tertiary side is connected to the tank line (T). They are connected to each other, and the pressure of the discharge line (A) is applied to the suppressor (3).
When the pressure exceeds the set pressure according to 2), the spool (31) is moved to the illustrated position to introduce the discharge fluid from the discharge line (A) into the introduction chamber (45). Note that when the pressure in the discharge line (A) is lower than the pressure set by the suppressor (32), the introduction chamber (45) is opened to the tank line (T). Further, the set pressure by the suppressor (32) is variable by an adjustment screw (33).

操作プランジャ(9)は、長さ方向両側に備える支持筒
(9a)  (9b)を介して本体(1)に両持ち支持
され、その中央部に設ける円形嵌合孔(90)に、回転
体(20)を回転自由に支持し、この回転体(20)に
形成する挿通孔(21)に、前記連結アーム(50)の
一端を挿通している。尚、(42)は前記プランジャ(
9)を最大傾斜角方向に付勢するバネ、(43)は同じ
くバイアスピストンである。
The operating plunger (9) is supported on both ends by the main body (1) via support tubes (9a) and (9b) provided on both sides in the length direction, and a rotating body is inserted into a circular fitting hole (90) provided in the center of the operating plunger (9). (20) is rotatably supported, and one end of the connecting arm (50) is inserted into an insertion hole (21) formed in this rotating body (20). In addition, (42) is the plunger (
The spring (43) that biases the spring 9) in the direction of the maximum inclination angle is also a bias piston.

以上構成するピストン機械において、前記スワンシュプ
レート(7)の傾斜角度を制御する制御圧力の導入室(
45)から機械本体(1)内に給油路(10)を延設し
、該給油路(lO)を前記受面(80)と滑り面(70
)との対向面間に開口させるのである。
In the piston machine configured as described above, a control pressure introduction chamber (
45) into the machine body (1), and the oil supply path (lO) is connected to the receiving surface (80) and the sliding surface (70).
) is opened between the opposing surfaces.

具体的には、第4図に示すように、ホルダー(8)にお
ける高圧側受面(81)に、前記スワッシュプレート(
7)の傾転方向に沿って延びる長溝状の第1油溜部(8
a)を形成し、該第1油溜部(8a)に、前記給油路(
10)を開口し、他方側の低圧側受面(82)に、前記
第1油溜部(8a)よりも小さい開口面をもった第2油
溜部(8b)を形成し、該第2油溜部(8b)を、前記
第1浦溜部(8a)の−側から延設する連絡路(8c)
を介して接続するのである。
Specifically, as shown in FIG. 4, the swash plate (
7), a long groove-shaped first oil sump portion (8) extending along the tilting direction.
a), and the first oil sump (8a) is provided with the oil supply path (
10) is opened, and a second oil sump (8b) having a smaller opening surface than the first oil sump (8a) is formed on the other low pressure side receiving surface (82), and A communication path (8c) extending the oil sump portion (8b) from the − side of the first sump portion (8a).
The connection is made through the .

以」二の構成により、吐出ライン(A)の圧力が設定圧
力以上に達し、導入室(45)に制御圧力が導入される
と、スワッシュプレート(7)は最大傾斜位置から中立
位置に制御されるのであり、これに伴い、給油路(10
)を介して各油溜部(8a)(8b)には導入室(45
)の油が供給されることになる。そして、この供給され
た油は、スワッシュプレート(7)をホルダー(8)の
受面(81)(82)に押付ける力に対抗して、該プレ
ート(7)を受面(81)(82)から浮き」二がらせ
る浮上刃として作用することになり、又、滑り而(71
)(72)と受面(81)(82)との対向面間に油膜
を形成することになり、スワッシュプレート(7)は、
流体潤滑された状態で滑らかに傾転することになる。
With the second configuration, when the pressure in the discharge line (A) reaches the set pressure or higher and control pressure is introduced into the introduction chamber (45), the swash plate (7) is controlled from the maximum inclination position to the neutral position. Along with this, the refueling route (10
) is connected to each oil reservoir (8a) (8b) through an inlet chamber (45
) oil will be supplied. The supplied oil then pushes the plate (7) against the receiving surfaces (81) (82) of the holder (8) against the force that presses the swash plate (7) against the receiving surfaces (81) (82). ), it acts as a floating blade that makes it float away from the surface, and also causes it to slide (71
) (72) and the receiving surfaces (81) and (82), an oil film is formed between the opposing surfaces of the swash plate (7).
It will tilt smoothly under fluid lubrication.

この場合、油溜部(8a)  (8b)に開口される給
hb路(10)は、制御圧力ラインである導入室(45
)から延設され、スワッシュプレート(7)を最大傾斜
位置から中立位置に変化される時にのみ、つまり真に対
向面間(71と81,72と82)に潤滑が必要な時に
のみ給油が行われのから、換言すると、従来のようにシ
リンダブロック(5)の回転中に常時給油を行うもので
なく、スワラツユプレート(7)が最大傾斜位置に静止
している時には給油は行わないものであるから、ポンプ
にあって最大吐出時あるいはモータにあって最大回転時
における翔れ油量を無くし得、効率低下の問題が解消で
きるのである。
In this case, the feed Hb path (10) opened to the oil reservoir (8a) (8b) is connected to the introduction chamber (45) which is the control pressure line.
), and lubrication is performed only when the swash plate (7) is changed from the maximum inclination position to the neutral position, that is, only when lubrication is truly required between the opposing surfaces (71 and 81, 72 and 82). In other words, unlike conventional systems, lubrication is not always performed while the cylinder block (5) is rotating, but lubrication is not performed when the swirl plate (7) is stationary at the maximum tilt position. Because of this, it is possible to eliminate the amount of oil blown away in the pump at maximum discharge or in the motor at maximum rotation, and the problem of reduced efficiency can be solved.

しかも、前記対向面間に供給される給油圧力は、操作プ
ランジャ(9)を動かす制御圧力ひいては吐出圧力、な
かんづく滑り面(71)(72)が受面(81)(82
)に押付けられる力に比例することになるため、スワッ
シュプレート(7)が最大傾斜位置から中立位置に順次
角度変更する時に、その角度に見合った適性な浮動力を
発生せしめることができ、常時適性な給油が行えること
になる。
Moreover, the oil supply pressure supplied between the opposing surfaces is the control pressure that moves the operating plunger (9) and the discharge pressure, especially when the sliding surfaces (71) and (72) are connected to the receiving surfaces (81) and (82).
), so when the swash plate (7) sequentially changes its angle from the maximum inclination position to the neutral position, it is possible to generate an appropriate floating force commensurate with the angle, and the swash plate (7) is always in a suitable position. This will allow for more refueling.

その上、本実施例では、油溜部(8a)(8b)の給油
面積を、高圧側の第1油溜部(8a)で太き(、低圧倒
の第2油溜部(8b)で小さくしたから、低圧倒対向面
(72と82)に比べ押付は力が大きい高圧倒対向面(
71と81)の方により良く給油でき、全体として効率
のよい給油が行える利点もある。又、同じく本実施例で
は、給油路(10)を、高圧側の第1油溜部(8a)に
開口し、該第1油溜部(8a)の−側から低圧側の第2
油溜部(8b)に連絡するようにしたから、ます、高圧
側の第1油溜部(8a)に油を満たした後に、第2油溜
部(8b)の方へ油が供給されるのであって、高圧側対
向面(71と81)への給油が優先されることから、−
層効率の良い給油が行える。
Furthermore, in this embodiment, the oil supply areas of the oil sump parts (8a) and (8b) are made larger in the first oil sump part (8a) on the high pressure side (and in the second oil sump part (8b) with a lower pressure). Because it is smaller, the high-force opposing surface (72 and 82) has a greater pressing force compared to the low-force opposing surface (72 and 82).
71 and 81) have the advantage that they can be refueled more efficiently and can be refueled more efficiently overall. Also, in this embodiment, the oil supply path (10) is opened to the first oil sump (8a) on the high pressure side, and the oil supply path (10) is opened from the - side of the first oil sump (8a) to the second oil sump (8a) on the low pressure side.
Since it is connected to the oil sump (8b), after the first oil sump (8a) on the high pressure side is filled with oil, oil is supplied to the second oil sump (8b). Since priority is given to lubricating the high pressure side facing surfaces (71 and 81), -
Enables efficient refueling.

尚、上記実施例では、油溜部(8a)(8b)を、ホル
ダー(8)側に形成したが、スワラ/ニブレート(7)
側に形成してもよいし、又、構造を簡素化するため、押
圧力の大きい高圧側の第1油溜部(8a)のみ設けて、
高圧側の対向面間のみに給油を行うようにしてもよい。
In the above embodiment, the oil reservoirs (8a) and (8b) were formed on the holder (8) side, but the swirler/nibrate (7)
Alternatively, in order to simplify the structure, only the first oil reservoir part (8a) on the high pressure side with a large pressing force is provided.
Oil may be supplied only between the opposing surfaces on the high pressure side.

(発明の効果) 本発明は所謂クレイドル方式の支持構造を備えたアキン
ヤルピストン機械において、機械本体(1)側に設ける
円筒受面(80)と、スワッシュプレート(7)側の円
筒滑り面(70)との対向面間に、前記スワッシュプレ
ート(7)の傾斜角度を制御する制御圧力ラインから延
びる給油路(10)を開口させたから、スワッシュプレ
ート(7)がその傾斜角度を変更する時、つまり円筒滑
り而(70)と受面(80)との対向面間で摺動が行わ
れ真に給油が必要な時にのみ油の供給がなし得て、給油
に伴う帰れ油量を低減し、効率低下を抑制できながら、
スワッシュプレート(7)の滑らかな摺動が行えるので
ある。
(Effects of the Invention) The present invention provides a cylindrical bearing surface (80) provided on the machine body (1) side and a cylindrical sliding surface ( Since the oil supply passage (10) extending from the control pressure line that controls the inclination angle of the swash plate (7) is opened between the facing surfaces of the swash plate (70), when the swash plate (7) changes its inclination angle, In other words, sliding occurs between the opposing surfaces of the cylindrical slide (70) and the receiving surface (80), and oil can be supplied only when lubrication is truly required, reducing the amount of return oil that accompanies lubrication. While suppressing efficiency decline,
This allows the swash plate (7) to slide smoothly.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係るピストン機械の一実施例を示す上
面断面図、第2図は同側断面図、第3図はスワツシユプ
レートの斜視図、第4図はホルダーの斜視図、第5図は
従来例の概略側断面図である。 (1)・・・・・・機械本体 (5)・・・・・・シリンダブロック (7)・・・・・・スワッシュプレート  ゛(10)
・・・・・・給油路 (5a)・・・・・・ピストン (7a)・・・・・・接触面部 (70)・・・・・・円筒滑り面 (80)・・・・・・円筒受面
Fig. 1 is a top sectional view showing an embodiment of the piston machine according to the present invention, Fig. 2 is a sectional view of the same side, Fig. 3 is a perspective view of the swath plate, Fig. 4 is a perspective view of the holder, FIG. 5 is a schematic side sectional view of a conventional example. (1) Machine body (5) Cylinder block (7) Swash plate (10)
...Oil supply path (5a) ...Piston (7a) ...Contact surface part (70) ...Cylindrical sliding surface (80) ... Cylindrical bearing surface

Claims (1)

【特許請求の範囲】[Claims] (1)多数のピストン(5a)をもつシリンダブロック
(5)と、前面に前記ピストン(5a)の頭部側を接触
させる接触面部(7a)をもち、背面に、機械本体(1
)側に設ける円筒受面(80)と対向する円筒滑り面(
70)をもったスワッシュプレート(7)とを備え、該
スワッシュプレート(7)の傾斜角度を制御するように
したアキシャルピストン機械において、前記受面(80
)と滑り面(70)との対向面間に、前記スワッシュプ
レート(7)の傾斜角度を制御する制御圧力ラインから
延びる給油路(10)を開口させていることを特徴とす
るアキシャルピストン機械。
(1) A cylinder block (5) with a large number of pistons (5a), a contact surface (7a) that contacts the head side of the pistons (5a) on the front, and a machine body (1) on the back.
) The cylindrical sliding surface (80) facing the cylindrical receiving surface (80)
In an axial piston machine, the swash plate (7) has a swash plate (70), and the inclination angle of the swash plate (7) is controlled.
) and the sliding surface (70), an oil supply passage (10) extending from a control pressure line for controlling the inclination angle of the swash plate (7) is opened.
JP62287999A 1987-11-14 1987-11-14 Axial piston machine Granted JPH01130073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62287999A JPH01130073A (en) 1987-11-14 1987-11-14 Axial piston machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62287999A JPH01130073A (en) 1987-11-14 1987-11-14 Axial piston machine

Publications (2)

Publication Number Publication Date
JPH01130073A true JPH01130073A (en) 1989-05-23
JPH0468472B2 JPH0468472B2 (en) 1992-11-02

Family

ID=17724492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62287999A Granted JPH01130073A (en) 1987-11-14 1987-11-14 Axial piston machine

Country Status (1)

Country Link
JP (1) JPH01130073A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785150A (en) * 1996-02-22 1998-07-28 Mitsubishi Denki Kabushiki Kaisha Swash plate type axial piston pump including lubrication mechanism, and valve plate
DE19618524B4 (en) * 1995-10-24 2004-07-15 Mitsubishi Denki K.K. Swash plate type axial piston pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540376U (en) * 1978-09-08 1980-03-15
JPS61232389A (en) * 1985-04-05 1986-10-16 Daikin Ind Ltd Axial piston machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540376U (en) * 1978-09-08 1980-03-15
JPS61232389A (en) * 1985-04-05 1986-10-16 Daikin Ind Ltd Axial piston machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618524B4 (en) * 1995-10-24 2004-07-15 Mitsubishi Denki K.K. Swash plate type axial piston pump
US5785150A (en) * 1996-02-22 1998-07-28 Mitsubishi Denki Kabushiki Kaisha Swash plate type axial piston pump including lubrication mechanism, and valve plate
DE19706994B4 (en) * 1996-02-22 2005-02-24 Mitsubishi Denki K.K. Swash plate axial pump with lubrication mechanism and valve plate

Also Published As

Publication number Publication date
JPH0468472B2 (en) 1992-11-02

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