JP2003155973A - Hydraulic pump - Google Patents
Hydraulic pumpInfo
- Publication number
- JP2003155973A JP2003155973A JP2002286341A JP2002286341A JP2003155973A JP 2003155973 A JP2003155973 A JP 2003155973A JP 2002286341 A JP2002286341 A JP 2002286341A JP 2002286341 A JP2002286341 A JP 2002286341A JP 2003155973 A JP2003155973 A JP 2003155973A
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- cylinder
- elastic
- hydraulic pump
- barrel
- 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
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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2078—Swash plates
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
- F04B1/126—Piston shoe retaining means
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/128—Driving means
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2035—Cylinder barrels
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/11—Kind or type liquid, i.e. incompressible
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は液圧ポンプに関し、
より詳しくは、適切な方法で一つだけの部材によってシ
ュー(shoe)をホルディングする機能を遂行することが
できる液圧ポンプに関する。TECHNICAL FIELD The present invention relates to a hydraulic pump,
More particularly, it relates to a hydraulic pump capable of performing the function of holding a shoe with only one member in a suitable manner.
【0002】[0002]
【従来の技術】一般に、液圧ポンプは高圧ポンピングの
ための目的に用いられ、傾斜面を有する斜板部材とシュ
ーを有するピストン部材とを備えている。このような構
造において、ピストン部材のシューが装置全体の高圧ポ
ンピング作用を適切に誘導するためには斜板部材(wobb
le plate member)の傾斜面と堅固に接触しなければな
らないので、シューホルディングメカニズムはこのよう
な目的のために使用される。2. Description of the Related Art Generally, a hydraulic pump is used for high-pressure pumping and includes a swash plate member having an inclined surface and a piston member having a shoe. In such a structure, the swash plate member (wobb) member is necessary to properly guide the high pressure pumping action of the entire piston device.
The shoe-holding mechanism is used for this purpose because it must make firm contact with the inclined surface of the le plate member.
【0003】図4は斜板(wobble plate)を有する液圧
ポンプの断面図である。この液圧ポンプは多数の流体通
路52、54とシャフトベアリングホール57を有する
円筒形状の溝56を有するケース58とを含み、シャフ
ト50が回転できるように前記溝56のシャフトベアリ
ングホール57に挿入される。多数のシリンダー部材6
0がそれぞれシリンダーホール62を有し前記ケース5
8の溝56に配置されて、前記シャフト50の回転力を
受けて回転できる。さらに、前記各シリンダー部材60
は前記シリンダーホール62と前記流体通路52、54
との間を流体が通過できるようにするための通過ホール
76を有する。ピストン部材64は前記各シリンダー部
材60に配置されてシリンダーホール62内で往復運動
する。斜板部材68は前記ケース58と結合されて前記
溝56の開口部を覆う。前記斜板部材68は定められた
角度に傾いた傾斜面66を形成する突出部65を有す
る。FIG. 4 is a sectional view of a hydraulic pump having a wobble plate. This hydraulic pump includes a plurality of fluid passages 52, 54 and a case 58 having a cylindrical groove 56 having a shaft bearing hole 57, and is inserted into the shaft bearing hole 57 of the groove 56 so that the shaft 50 can rotate. It Many cylinder members 6
0 has cylinder holes 62, and the case 5
It is arranged in the groove 56 of 8 and can be rotated by receiving the rotational force of the shaft 50. Furthermore, each of the cylinder members 60
Is the cylinder hole 62 and the fluid passages 52, 54.
It has a passage hole 76 for allowing a fluid to pass therethrough. The piston member 64 is disposed in each of the cylinder members 60 and reciprocates in the cylinder hole 62. The swash plate member 68 is coupled to the case 58 to cover the opening of the groove 56. The swash plate member 68 has a protruding portion 65 forming an inclined surface 66 inclined at a predetermined angle.
【0004】前記ピストン部材64はシリンダーホール
62内で往復運動するピストン70と、シリンダー部材
60の回転と共に斜板部材68の傾斜面66に沿って移
動してコネクティング部材74を経由して前記ピストン
70に連結されるシュー72を含む。前記コネクティン
グ部材74はボールジョイントで形成され前記シュー7
2が斜板部材68の傾斜面に沿って自由に移動できるよ
うにする。The piston member 64 reciprocates in the cylinder hole 62, and moves along the inclined surface 66 of the swash plate member 68 with the rotation of the cylinder member 60, and the piston 70 via the connecting member 74. A shoe 72 connected to the. The connecting member 74 is formed of a ball joint, and the shoe 7
2 is allowed to move freely along the inclined surface of the swash plate member 68.
【0005】シューホルダー78はシュー72が斜板部
材68に密着するようにシュー72の周囲に配置され
る。一対のカラー80は一定の距離をおいてシリンダー
部材60内に位置され、この一対のカラー80の間に弾
性部材82が弾支されている。バレル部材86はシュー
72に対してシューホルダー78を支持するようにシャ
フト50とシューホルダー78との間に挿入される。ピ
ン部材84はバレル部材86と隣接するカラー80との
間に位置する。The shoe holder 78 is arranged around the shoe 72 so that the shoe 72 is in close contact with the swash plate member 68. The pair of collars 80 are positioned within the cylinder member 60 at a constant distance, and the elastic member 82 is elastically supported between the pair of collars 80. The barrel member 86 is inserted between the shaft 50 and the shoe holder 78 so as to support the shoe holder 78 with respect to the shoe 72. The pin member 84 is located between the barrel member 86 and the adjacent collar 80.
【0006】上記液圧ポンプにおいて、弾性部材82か
ら弾性力を受けると、前記ピン部材84は斜板部材68
の傾斜面66にシューホルダー78を押圧するようにバ
レル部材86に前記弾性力を伝達する。In the above hydraulic pump, when an elastic force is applied from the elastic member 82, the pin member 84 causes the swash plate member 68 to move.
The elastic force is transmitted to the barrel member 86 so as to press the shoe holder 78 against the inclined surface 66.
【0007】これによって、ピストン部材64のシュー
72は斜板部材68の傾斜面66に密着しシリンダー部
材60の回転に伴って傾斜面66に沿って移動する。こ
の時、ピストン部材64のピストン70はシリンダー部
材60のシリンダーホール62内で往復移動する。この
ような作動において、ピストン部材64のシュー72が
傾斜面66に沿って下側に移動する時、流体は流体流入
通路52を通じて通過ホール76を経由してシリンダー
ホール62に流入する。その反面、シュー72が傾斜面
66に沿って上側に移動する時、シリンダーホール62
に流入した流体は通過ホール76を経由して流体排出通
路54を通じて排出される。このような方法で、液圧ポ
ンプにおいて所望の液圧を得ることができる。As a result, the shoe 72 of the piston member 64 comes into close contact with the inclined surface 66 of the swash plate member 68 and moves along the inclined surface 66 as the cylinder member 60 rotates. At this time, the piston 70 of the piston member 64 reciprocates in the cylinder hole 62 of the cylinder member 60. In this operation, when the shoe 72 of the piston member 64 moves downward along the inclined surface 66, the fluid flows into the cylinder hole 62 through the fluid inflow passage 52 and the passage hole 76. On the other hand, when the shoe 72 moves upward along the inclined surface 66, the cylinder hole 62
The fluid that has flowed in is discharged through the fluid discharge passage 54 via the passage hole 76. With such a method, a desired hydraulic pressure can be obtained in the hydraulic pump.
【0008】[0008]
【発明が解決しようとする課題】しかし、上記シューホ
ルディングメカニズムはカラー部材80、弾性部材8
2、ピン部材84、バレル部材86、シューホルダー7
8を含む多数のシューホルディング要素によって構造が
複雑になり、製造時間が永くなり製造費用が高くなり、
生産効率が悪くなる。何故ならば前記シューホルディン
グ要素のうちの一部はこのようなシューホルディングメ
カニズムに必ずしも必要なものではないと理解できるか
らである。However, the shoe-holding mechanism has the collar member 80 and the elastic member 8.
2, pin member 84, barrel member 86, shoe holder 7
The number of shoeholding elements, including eight, complicates the structure, lengthens the manufacturing time, increases the manufacturing cost,
Production efficiency deteriorates. It is understood that some of the shoe-holding elements are not necessarily required for such a shoe-holding mechanism.
【0009】[0009]
【課題を解決するための手段】本発明の目的は1つの部
材のみでシューホルディング機能を効率的に遂行するこ
とができる液圧ポンプを提供することにある。このよう
な目的は弾性シューホルダーを有する液圧ポンプによっ
て達成され得る。前記液圧ポンプは多数の流体通路と、
シャフトベアリングホールを有する円筒形状の溝とを有
するケースを含む。シャフトは前記溝のシャフトベアリ
ングホールに挿入されて回転することができる。多数の
シリンダー部材はそれぞれシリンダーホールを備えた状
態で前記ケースの溝に配置され前記シャフトの回転力を
受けて回転することができる。ピストン部材は各シリン
ダー部材に位置しシリンダー部材の回転に伴ってシリン
ダーホールの内部で往復運動する。傾斜面を有する斜板
部材はケースと結合されて前記溝の開口部を覆う。各シ
リンダー部材は前記溝の開口部方向に底面を有する。腰
部を有するシューはコネクティング部材を通じてピスト
ン部材に固定され斜板部材の傾斜面と接触する。SUMMARY OF THE INVENTION An object of the present invention is to provide a hydraulic pump capable of efficiently performing the shoe-holding function with only one member. Such an object can be achieved by a hydraulic pump having an elastic shoe holder. The hydraulic pump has a number of fluid passages,
And a cylindrical groove having a shaft bearing hole. The shaft may be inserted into the shaft bearing hole of the groove to rotate. The plurality of cylinder members, each having a cylinder hole, are arranged in the groove of the case and can be rotated by receiving the rotational force of the shaft. The piston member is located in each cylinder member and reciprocates inside the cylinder hole as the cylinder member rotates. A swash plate member having an inclined surface is coupled to the case to cover the opening of the groove. Each cylinder member has a bottom surface toward the opening of the groove. The shoe having a waist is fixed to the piston member through the connecting member and contacts the inclined surface of the swash plate member.
【0010】前記シリンダー部材の底面にはバレル(ba
rrel)形状部が設けられ、前記シューの腰部には段部が
設けられている。弾性シューホルダーは前記シューの段
部に挿入される。前記弾性シューホルダーは丸い中心ホ
ールを有し、多数の弾性本体が互いに結合して一体とな
り前記中心ホールの周囲で内側に曲がっている。弾性シ
ューホルダーの挿入は丸い中心ホールを通じて実現でき
る。弾性シューホルダーが前記シューの段部に挿入され
る時、弾性本体はバレル形状部に接触する。前記弾性本
体の屈曲部は良好な弾性効果を発揮するようにそれぞれ
曲がった形状に形成される。On the bottom surface of the cylinder member is a barrel (ba
rrel) shaped portion is provided, and a step portion is provided at the waist of the shoe. The elastic shoe holder is inserted into the step portion of the shoe. The elastic shoe holder has a round center hole, and a plurality of elastic bodies are integrally connected to each other and bent inward around the center hole. Insertion of the elastic shoe holder can be realized through a round center hole. When the elastic shoe holder is inserted into the step portion of the shoe, the elastic body contacts the barrel-shaped portion. The bent portions of the elastic body are formed in a bent shape so as to exert a good elastic effect.
【0011】[0011]
【発明の実施の形態】以下、本発明の好ましい実施例を
添付図面に基づいて説明する。図1は本発明の第1実施
例による弾性シューホルダーを有する液圧ポンプを示し
た断面図であり、図2Aないし図2Cは弾性シューホル
ダーを示した図面である。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a sectional view showing a hydraulic pump having an elastic shoe holder according to a first embodiment of the present invention, and FIGS. 2A to 2C are drawings showing the elastic shoe holder.
【0012】図1に示されているように、液圧ポンプは
多数の流体通路8、10とシャフトベアリングホール4
を有する円筒形状の溝6とを有するケース12と、前記
溝6のシャフトベアリングホール4に挿入されて回転で
きるシャフト12とを含む。多数のシリンダー部材14
はそれぞれシリンダーホール16を有しケース2の溝6
に配置され、シャフト2の回転力を受けると回転でき
る。さらに、各シリンダー部材14はシリンダーホール
16とそれぞれの流体通路8、10との間を流体が通過
できるように通過ホール18を有する。バレル形状部は
本体のシリンダー部材14の底面から突出している。前
記バレル形状部は以下では簡単にバレル20と示されシ
ュー24と対向する丸い面を有する。前記バレル20は
従来の液圧ポンプに採用されたバレル部材と同一の機能
を遂行するものである。ピストン部材32は各シリンダ
ー部材14に位置しシリンダー部材14のシリンダーホ
ール16の内部で往復運動する。As shown in FIG. 1, the hydraulic pump has a large number of fluid passages 8 and 10 and a shaft bearing hole 4.
A case 12 having a cylindrical groove 6 having a groove, and a shaft 12 inserted into the shaft bearing hole 4 of the groove 6 and rotatable. Many cylinder members 14
Each has a cylinder hole 16 and the groove 6 of the case 2
The shaft 2 is arranged at a position where the shaft 2 can be rotated by receiving the rotational force of the shaft 2. Further, each cylinder member 14 has a passage hole 18 for allowing fluid to pass between the cylinder hole 16 and the respective fluid passages 8, 10. The barrel-shaped portion projects from the bottom surface of the cylinder member 14 of the main body. Said barrel-shaped part has a rounded surface, which is referred to below simply as barrel 20 and which faces shoe 24. The barrel 20 performs the same function as the barrel member used in the conventional hydraulic pump. The piston member 32 is located in each cylinder member 14 and reciprocates inside the cylinder hole 16 of the cylinder member 14.
【0013】斜板部材26はケース12と結合されて前
記溝6の開口部を覆う。前記斜板部材26は傾斜面28
を形成する上側部を有する。前記ピストン部材32は前
記シリンダーホール16内で往復運動するピストン22
と、コネクティング部材30を介してピストン22に固
定されるシュー24とを含み、シリンダー部材14の回
転に伴って斜板部材26の傾斜面28に沿って移動でき
る。前記コネクティング部材30は前記傾斜面28に沿
ってシュー24が円滑に移動できるようにするボールジ
ョイントで形成される。The swash plate member 26 is connected to the case 12 to cover the opening of the groove 6. The swash plate member 26 has an inclined surface 28.
Has an upper portion that forms The piston member 32 is a piston 22 that reciprocates in the cylinder hole 16.
And a shoe 24 fixed to the piston 22 via a connecting member 30, and can move along the inclined surface 28 of the swash plate member 26 as the cylinder member 14 rotates. The connecting member 30 is formed of a ball joint that allows the shoe 24 to move smoothly along the inclined surface 28.
【0014】前記シュー24は腰部に、以下では簡単に
ストッパー34と言及される段部を有する。一定の弾性
を有する弾性シューホルダー36はシュー24のストッ
パー34に挿入されて固定される。図2Aないし図2C
に示されているように、弾性シューホルダー36は丸い
中心ホール38と、互いに結合して前記中心ホール38
の周囲で内側に曲がった多数の弾性本体40とを有す
る。すなわち、それぞれの弾性本体40は屈曲部44か
ら中心ホール38に向かう平行な2重面である。さら
に、それぞれの弾性本体40は2重面部にホール42を
有する。前記ホール42に隣接した弾性本体40の自由
端形成部側はバレル20と接触して固定された状態にな
る反面、前記弾性本体40の反対側は前記シュー24の
ストッパー34に固定される。The shoe 24 has a step portion on the waist, which will be simply referred to as a stopper 34 in the following. The elastic shoe holder 36 having a certain elasticity is inserted and fixed in the stopper 34 of the shoe 24. 2A to 2C
As shown in FIG. 3, the elastic shoe holder 36 has a round center hole 38 and is connected to each other to form the center hole 38.
And a plurality of elastic bodies 40 that are bent inwardly around. That is, each elastic body 40 is a parallel double surface extending from the bent portion 44 toward the central hole 38. Further, each elastic body 40 has a hole 42 in the double-faced portion. The free end forming portion side of the elastic body 40 adjacent to the hole 42 is in contact with and fixed to the barrel 20, while the opposite side of the elastic body 40 is fixed to the stopper 34 of the shoe 24.
【0015】前記シュー24とバレル20との間で作用
する弾性シューホルダー36の弾性力によって、前記シ
ュー24が斜板部材26の傾斜面28に堅く接触し前記
シリンダー部材14の回転に伴って安定して傾斜面28
に沿って移動する。前記弾性本体40の屈曲部44は効
果的な弾性力を発生させるように曲がった形状に形成さ
れる。The elastic force of the elastic shoe holder 36 acting between the shoe 24 and the barrel 20 causes the shoe 24 to firmly contact the inclined surface 28 of the swash plate member 26 and stabilize as the cylinder member 14 rotates. Then slope 28
Move along. The bent portion 44 of the elastic body 40 is formed in a bent shape so as to generate an effective elastic force.
【0016】作動に際して、前記シャフト2がシリンダ
ー部材14に回転力を伝達する時、コネクティング部材
30を介してピストン22に固定されたシュー24が斜
板部材26の傾斜面28に沿って移動することにより前
記ピストン22が回転するシリンダー部材14のシリン
ダーホール16内で往復運動する。前記シュー24が傾
斜面28に沿って下側に移動する場合、流体は流体流入
通路8を通じて通過ホール18を経由してシリンダーホ
ール16に流入する。その反面、前記シュー24が傾斜
面28に沿って上側に移動する場合、前記シリンダーホ
ール16に流入した流体は通過ホール18を経由して流
体排出通路10を通じて排出される。In operation, when the shaft 2 transmits a rotational force to the cylinder member 14, the shoe 24 fixed to the piston 22 via the connecting member 30 moves along the inclined surface 28 of the swash plate member 26. Accordingly, the piston 22 reciprocates in the cylinder hole 16 of the rotating cylinder member 14. When the shoe 24 moves downward along the inclined surface 28, the fluid flows into the cylinder hole 16 through the fluid inflow passage 8 and the passage hole 18. On the other hand, when the shoe 24 moves upward along the inclined surface 28, the fluid flowing into the cylinder hole 16 is discharged through the fluid discharge passage 10 via the passage hole 18.
【0017】図3Aないし図3Cは本発明の第2実施例
による液圧ポンプの弾性シューホルダーを図示した図面
である。この実施例において、弾性シューホルダー以外
の液圧ポンプの全体構成要素は前記第1実施例と同一で
ある。3A through 3C are views showing an elastic shoe holder of a hydraulic pump according to a second embodiment of the present invention. In this embodiment, the entire components of the hydraulic pump other than the elastic shoe holder are the same as those in the first embodiment.
【0018】図3Aと図3Bに示されているように、弾
性シューホルダー49は丸い中心ホール45と、前記中
心ホール45の周りに中心をおいている球面部46と、
前記球面部46から延長される多数のプレート48とを
有する。前記球面部46は前記シリンダー部材14のバ
レル20と接触するように予め定められた曲率を有す
る。このような構造で、球面部46の上下部直径は当然
異なり、所望の弾性が弾性シューホルダー49で得られ
る。以上のように、本発明の液圧ポンプは適切な方法で
単一部材である弾性シューホルダーのみでシューをホル
ディングする機能を遂行することができる。これによっ
て、製造時間が短縮され、経済的な製造費用及び高い生
産効率が得られるようになる。As shown in FIGS. 3A and 3B, the elastic shoe holder 49 has a round center hole 45 and a spherical portion 46 centered around the center hole 45.
And a plurality of plates 48 extending from the spherical portion 46. The spherical portion 46 has a predetermined curvature so as to come into contact with the barrel 20 of the cylinder member 14. With such a structure, the upper and lower diameters of the spherical portion 46 are naturally different, and the desired elasticity can be obtained by the elastic shoe holder 49. As described above, the hydraulic pump of the present invention can perform the function of holding the shoe only by the elastic shoe holder which is a single member, by a proper method. As a result, manufacturing time is shortened, and economical manufacturing cost and high production efficiency can be obtained.
【0019】[0019]
【発明の効果】本発明は前記具体的な実施例を参照して
詳細に説明されているが、この分野における通常の知識
を有する者にとってみれば、添付された請求範囲に述べ
られている本発明の技術思想を外れない範囲で多様な変
化及び代替が可能である。The present invention has been described in detail with reference to the above specific embodiments, but for a person having ordinary skill in the art, the book as described in the appended claims. Various changes and substitutions are possible without departing from the technical idea of the invention.
【図1】 本発明の第1実施例による弾性シューホルダ
ーを有する液圧ポンプの断面図。FIG. 1 is a sectional view of a hydraulic pump having an elastic shoe holder according to a first embodiment of the present invention.
【図2】(A) 図1に示した弾性シューホルダーの斜
視図。
(B) 図1に示した弾性シューホルダーの正面図。
(C) 図1に示した弾性シューホルダーの平面図。FIG. 2A is a perspective view of the elastic shoe holder shown in FIG. (B) A front view of the elastic shoe holder shown in FIG. 1. (C) A plan view of the elastic shoe holder shown in FIG. 1.
【図3】(A)本発明の第2実施例による液圧ポンプの
弾性シューホルダーの斜視図。
(B) 図3(A)に示した弾性シューホルダーの平面
図。
(C) 図3(A)に示した弾性シューホルダーの正面
図。FIG. 3A is a perspective view of an elastic shoe holder of a hydraulic pump according to a second embodiment of the present invention. 3B is a plan view of the elastic shoe holder shown in FIG. (C) A front view of the elastic shoe holder shown in FIG.
【図4】 従来の技術による液圧ポンプの断面図。FIG. 4 is a cross-sectional view of a conventional hydraulic pump.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 パーク ジョン−ケオル 大韓民国 689−800 ウルサン−シティ ウルジュ−ク エオニャン−エウプ バン ケオン−リ 1023−51 ヒャンダイ・アパ ート 105−303号 Fターム(参考) 3H070 BB04 CC31 CC35 DD13 3H071 AA01 BB01 CC31 CC34 DD89 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Park John-Keor Republic of Korea 689-800 Ulsan-City Ulju-ku Eonyang-Eupbang Keon-ri 1023-51 Hyundai Apa No. 105-303 F-term (reference) 3H070 BB04 CC31 CC35 DD13 3H071 AA01 BB01 CC31 CC34 DD89
Claims (2)
ホールを有する円筒形状の溝を有するケースと、回転可
能に前記溝のシャフトベアリングホールに挿入されるシ
ャフトと、それぞれシリンダーホールを有し前記ケース
の溝に配置されて前記シャフトの回転力を受けると回転
することができる多数のシリンダー部材と、前記シリン
ダー部材のシリンダーホール内で往復移動するように前
記それぞれのシリンダー部材に位置するピストン部材
と、前記溝の開口部を覆うように前記ケースと結合され
傾斜面を有する斜板部材と、腰部を有し前記斜板部材の
傾斜面と接触しコネクティング部材を通じて前記ピスト
ン部材に固定されるシューとを含み、前記シリンダー部
材はそれぞれ前記溝の開口部方向に位置する底面を有す
る液圧ポンプにおいて、 前記シリンダー部材の底面から突出するバレル形状部
と、 前記シューの腰部に形成される段部と、 前記シューの段部に挿入され、前記バレル形状部と接触
する一側部を有する弾性シューホルダーとを備え、 前記弾性シューホルダーは、円形の中心ホールと、前記
円形の中心ホールの周囲に中心を有する球面部と、前記
球面部から延長される多数のプレートとを含み、前記円
形の中心ホールを通じて前記シューの段部に挿入され弾
性シューホルダーの一側部が前記球面部に対応している
バレル形状部に接触する液圧ポンプ。1. A case having a cylindrical groove having a plurality of fluid passages and a shaft bearing hole, a shaft rotatably inserted into the shaft bearing hole of the groove, and a groove of the case having cylinder holes respectively. A plurality of cylinder members arranged to rotate when receiving the rotational force of the shaft, a piston member positioned in each of the cylinder members so as to reciprocate in a cylinder hole of the cylinder member, and the groove. A swash plate member that is coupled to the case so as to cover the opening of the swash plate member, and a shoe that has a waist portion and that is in contact with the swash plate member swash plate member and is fixed to the piston member through a connecting member, In the hydraulic pump, each of the cylinder members has a bottom surface located in the direction of the opening of the groove. An elastic shoe holder having a barrel-shaped portion protruding from a bottom surface of the cylinder member, a step portion formed on a waist portion of the shoe, and one side portion inserted into the step portion of the shoe and contacting the barrel-shaped portion. The elastic shoe holder includes a circular center hole, a spherical portion having a center around the circular center hole, and a plurality of plates extending from the spherical portion, the circular center hole A hydraulic pump in which one side of the elastic shoe holder is inserted into the stepped portion of the shoe through a barrel-shaped portion corresponding to the spherical portion.
の直径が互いに異なる請求項1に記載の液圧ポンプ。2. The hydraulic pump according to claim 1, wherein the spherical portion has a constant curvature, and upper and lower portions have different diameters.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1999/759U | 1999-01-21 | ||
KR2019990000759U KR19990021863U (en) | 1999-01-21 | 1999-01-21 | Elastic shoe holder of oilhydraulic pump |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000595057A Division JP3375332B2 (en) | 1999-01-21 | 1999-06-10 | Hydraulic pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003155973A true JP2003155973A (en) | 2003-05-30 |
Family
ID=19571222
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000595057A Expired - Fee Related JP3375332B2 (en) | 1999-01-21 | 1999-06-10 | Hydraulic pump |
JP2002286341A Pending JP2003155973A (en) | 1999-01-21 | 2002-09-30 | Hydraulic pump |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000595057A Expired - Fee Related JP3375332B2 (en) | 1999-01-21 | 1999-06-10 | Hydraulic pump |
Country Status (5)
Country | Link |
---|---|
JP (2) | JP3375332B2 (en) |
KR (2) | KR19990021863U (en) |
CN (1) | CN1136388C (en) |
AU (1) | AU4170999A (en) |
WO (1) | WO2000043672A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001304099A (en) * | 2000-04-25 | 2001-10-31 | Yanmar Diesel Engine Co Ltd | Axial piston pump motor |
JP4526640B2 (en) * | 2000-03-10 | 2010-08-18 | ヤンマー株式会社 | Axial piston pump / motor |
KR100433392B1 (en) * | 2002-02-18 | 2004-05-31 | 한국기계연구원 | Swash plate type axial piston apparatus |
KR100734552B1 (en) * | 2006-03-13 | 2007-07-02 | 전북대학교산학협력단 | Oil hydraulic piston pump and retainer for oil hydraulic piston pump |
WO2011079218A2 (en) | 2009-12-23 | 2011-06-30 | Bp Corporation North America Inc. | Rigless low volume pump system |
JP2014218919A (en) * | 2013-05-07 | 2014-11-20 | 川崎重工業株式会社 | Hydraulic rotation device |
DE102013210416A1 (en) * | 2013-06-05 | 2014-12-11 | Robert Bosch Gmbh | Hydrostatic axial piston machine and retaining plate |
CA2888027A1 (en) | 2014-04-16 | 2015-10-16 | Bp Corporation North America, Inc. | Reciprocating pumps for downhole deliquification systems and fluid distribution systems for actuating reciprocating pumps |
CN108799096B (en) * | 2018-06-13 | 2020-08-14 | 兰州理工大学 | Surface drag reduction type hydraulic plunger pump/motor cylinder |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3382814A (en) * | 1966-05-23 | 1968-05-14 | Sundstrand Corp | Piston holddown means |
CH482912A (en) * | 1967-11-15 | 1969-12-15 | Hueller Gmbh K | Axial piston machine |
US3996841A (en) * | 1971-02-23 | 1976-12-14 | Sundstrand Corporation | Hydraulic pump or motor |
DE3911129A1 (en) * | 1989-04-06 | 1990-10-11 | Kirovogr Z Gidravliceskich Sil | Hydraulic axial piston machine |
US5862704A (en) * | 1996-11-27 | 1999-01-26 | Caterpillar Inc. | Retainer mechanism for an axial piston machine |
-
1999
- 1999-01-21 KR KR2019990000759U patent/KR19990021863U/en active IP Right Review Request
- 1999-06-10 WO PCT/KR1999/000286 patent/WO2000043672A1/en active Application Filing
- 1999-06-10 JP JP2000595057A patent/JP3375332B2/en not_active Expired - Fee Related
- 1999-06-10 CN CNB99801205XA patent/CN1136388C/en not_active Expired - Fee Related
- 1999-06-10 AU AU41709/99A patent/AU4170999A/en not_active Abandoned
- 1999-08-13 KR KR2019990016680U patent/KR200169204Y1/en not_active IP Right Cessation
-
2002
- 2002-09-30 JP JP2002286341A patent/JP2003155973A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP3375332B2 (en) | 2003-02-10 |
KR200169204Y1 (en) | 2000-02-15 |
JP2002535552A (en) | 2002-10-22 |
CN1136388C (en) | 2004-01-28 |
KR19990021863U (en) | 1999-06-25 |
AU4170999A (en) | 2000-08-07 |
CN1286742A (en) | 2001-03-07 |
WO2000043672A1 (en) | 2000-07-27 |
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