JPS60187782A - Variable displacement vane pump - Google Patents

Abstract

PURPOSE:To reduce cost and facilitate the assembling as well as the storage of a spring by a method wherein a panel spring, capable of being formed by punching from the sheet of spring steel, is employed to permit to accommodate it into a narrow space and secure a perfect elastic restoring force having large amount of deflection and high strength. CONSTITUTION:The panel spring 100 is consisting of a flat plate base 101, made of oblong spring steel sheet, and a tongue 103, punched out of the base 101 and one end thereof is continued with the base 101 through a connecting part 104 while the other end thereof is bent upward. The panel spring can be punched out of the spring steel sheet easily, therefore, the cost is comparatively inexpensive while the height of contact becomes the same as the thickness of the sheet and, therefore, an effective stroke is large. Since the free length of the spring may be set long, the spring presses a seal pin 62 against the inner wall of a housing at all times in the narrow space while a proper pressing seal function may be completed since the spring has a perfect elastic restoring property, therefore, the assembling and storing of the pump may be facilitated.

Description

【発明の詳細な説明】 本発明は可変吐出量ベーンポンプ、特に自動車用自動変
速装置に使用される可変吐出量ベーンポンプに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a variable displacement vane pump, and more particularly to a variable displacement vane pump used in automatic transmissions for automobiles.

（背景技術） 出願人が出願中で未公開の特願昭５７−１６７６１８号
出願では、第１図に示すような、ハウジング頭内に回転
可能に支持されたロータ（７りと、放射方向に出入可能
にロータ（７りに嵌合されたベーン（７１）と、ハウジ
ング（１０内腔（イ）に設けた枢動部（イ）によす枢動
可能に支持されかつロータ（７すおよびベーン（７りを
取ジ囲むリング０Ｑと、全有し、ハウジング内腔（７）
とリング１５１外周部との間に、リング（ト）を枢動さ
せる、液圧的に他の室ｕｆｉ、（１７１から離隔され／
ヒ圧力室Ｈｋ形成するように、リング−の外周部に、）
・ウジング内腔四に開口する軸方向の溝（５４パ５５バ
５り全市する突起部（５４１）（５５す（５６１八各溝
の底に入社られた弾性部材（６３）、谷溝の弾性部材成
させるシールピン（６０バ６１）（６２）を有する可変
吐出量ベーンポンプ（１）が開示さ扛ている。そして弾
性部材（６３）としては図示しない合成ゴムと板バネと
が例示さ扛ているが、実際の機能を保つためには弾性部
材（６３）は茜さを高ぐすることができない小さなスペ
ースに入社ることができ、かなりのたわみ量と、くり返
し応力に対しての完全な弾性復元性を要するものである
が、上記した合成ゴムではたわみ量と復元性とが不足す
るし、また板バネは設計的に困難でありかつ強朋的に弱
くへたり易く弾性復元力が不足し１史いものにならない
など弾性部材としていづれも必要とさｒしる機能をｒ？
ｉ＋記小さなスペースに入る点は別として、いずｎも充
分に満足しない。(Background Art) In Japanese Patent Application No. 57-167618, which the applicant has filed and which has not yet been published, a rotor (7 and A vane (71) fitted into the rotor (7) so as to be removable and pivotally supported by a pivot part (A) provided in the inner cavity (A) of the housing (10) and a rotor (71) The vane (7) has a ring 0Q surrounding it and the entire housing bore (7).
and the outer periphery of the ring 151, there is another chamber ufi, (separated from the 171/
At the outer periphery of the ring, so as to form a pressure chamber Hk)
- Axial grooves opening into the inner cavity of the housing (54 protrusions (541), 55 protrusions (561), elastic members (63) installed at the bottom of each groove, elastic members of the valley grooves) A variable discharge amount vane pump (1) having seal pins (60 bars 61, 62) is disclosed.The elastic member (63) is exemplified by synthetic rubber and a plate spring (not shown). However, in order to maintain its actual function, the elastic member (63) must be able to fit into small spaces where it is not possible to increase its stiffness, and has a considerable amount of deflection and complete elastic recovery against repeated stress. However, the above-mentioned synthetic rubbers lack the amount of deflection and restoring properties, and leaf springs are difficult to design, are weak in strength, easily break, and lack elastic restoring power. Are there any functions that are necessary for an elastic member, such as not becoming obsolete?
Apart from the fact that it fits into a small space, neither i+ nor n is fully satisfied.

出願人が出願中で未公開の％紬昭５８−１４９１７２号
出願では、第２図、第３図に示すような線細工はね（１
０２）が提案されている。こ扛は前記合成ゴムまたは板
ばねより改良さｎたものであり、上述した必要とされる
諸機能を充すものではあるが、比較的に価格が高く、組
付けに慣扛が必要であり累早く行えないこと、さらに線
細工ばねを保管するとき線細工はね同志がからまって取
外しに時間がかかるなどの問題が発生した。In the % Tsumugi application No. 58-149172, which has been filed by the applicant and has not yet been published, the filigree splashes (1
02) has been proposed. This spring is an improvement over the synthetic rubber or leaf spring described above, and although it fulfills the various functions mentioned above, it is relatively expensive and requires some experience to assemble. Problems arose, such as not being able to do this quickly, and furthermore, when the filigree springs were stored, the filigree springs became entangled with each other, making it time consuming to remove them.

（発明の目的ン 本発明の目的は、小さなスペースに入ｎることかでき、
しかも大きなたわみ量と強度のある完全な弾性復元力と
を得らｎることができ、比較的安価かつ組付は保管が容
易な弾性部材を有する可変吐出量ベーンポンプを提供す
ることにある。(Object of the invention) The object of the invention is to be able to fit into a small space,
Moreover, it is an object of the present invention to provide a variable discharge amount vane pump having an elastic member that can obtain a large amount of deflection and a strong and complete elastic restoring force, is relatively inexpensive, and is easy to assemble and store.

このため本発明では、前記弾性部材は、外周がほぼ前記
溝の底面外周に類似した形状をしかっばね鋼製の板状基
８１Ｓと、前記基部から打抜か扛一端部を前記基部と連
もじ部でもって連続し他端を上方に折り曲げら扛た舌部
と、からなる板細工バネであることを特徴とする可変吐
出量ベーンポンプとしたものである。かかる構成により
、前記板細工バネはプレスによりばね鋼板を打ち抜くだ
けでよいので比較的安価であり、押し付けら扛た時その
密着罵さは板状基部の厚さと同一となるようにさ扛てお
り、自由長が大きく、智漸高さが低く小さいスペースの
溝の中にあって十分なたわみ量と強度的に強い完全な弾
性復元力を有するので、リングとハウジング内腔との相
対的変位の大小にかかわらず、常にシールピンをハウジ
ング内腔に適度に押圧しシール機能を完遂させるものと
なった。Therefore, in the present invention, the elastic member has a plate-shaped base 81S made of spring steel whose outer periphery is approximately similar to the outer periphery of the bottom surface of the groove, and a plate-shaped base 81S made of spring steel, and a part that is punched out from the base or connected to the base with one end thereof. This variable discharge amount vane pump is characterized by being a plate spring consisting of a continuous tongue portion with the other end bent upward. With this structure, the plate spring can be made by simply punching out a spring steel plate using a press, so it is relatively inexpensive, and when pressed, the tightness is the same as the thickness of the plate base. The ring has a large free length, a low height and a small space in the groove, and has sufficient deflection and strong complete elastic restoring force, so it can reduce the relative displacement between the ring and the housing bore. Regardless of the size, the seal pin is always pressed appropriately against the housing inner cavity to complete the sealing function.

しかも組付けは前記連続部を奥にして前記軸方向の溝（
５４，５５，５６）に押入むたけでよく、溝の側面はガ
イドとして板状基部を案内し上下左右にふ扛させないの
で非常に組付けが容易となり、また保管時も板細工バネ
同志がからむことがないので保管が容易となった。Moreover, the assembly is performed with the continuous part at the back of the groove in the axial direction (
54, 55, 56), and the sides of the grooves act as guides to guide the plate-like base and prevent it from swinging up, down, left or right, making assembly very easy. Also, the plate springs will not get entangled with each other during storage. This makes storage easier.

（実施例の説明） 次に本発明の実施例につき図凹勿疹照して説明　・する
と、第４図は本促明の一実施例である板細工バネ（１０
りを示す。板細工バネ（１００）は外周がほぼ第１図に
示す溝（５４，５５，５６）の底面外周に類似した長方
形をしたばね鋼製の板状基部（１０りと、基部（１０り
から打抜かｎ一端部を基部と連続部い０りでもって連続
し他端部（１０りを上方に曲げら扛た舌部（１０３）と
、からなる。舌部（１０３）の先端部（１０５）は第４
図では長方形の三辺をなすが、第５図で示すように、端
部（１１りは角部がまるめら扛てもよく、または図示し
ない先細９の台形の三辺または長楕円形の円弧部分をな
してもよい。好ましくは第５図に示す板細工バネ（１１
０）のように、連続部（１０４リ　はし［（６）がゆる
やかなそり反り形立上り曲線状をなすことにより、図で
みて上方から押し付けら扛た時に角ｎ曲ｖ部即ち連続部
（１０４′）に応力が集中することを防止するようにさ
ｔている。第５図の連続部い０４１）の構造であると、
図でみて上方から押し付けら扛たとき、折ｎ曲ｖ部にか
かる応力は分散さ扛折扛曲り部即ち連続部の変位を微少
なものとし、かつ舌部のそり反り部分のたわみを第１」
用してスプリング力を持たせ耐久性の向上を図ったもの
となっている。(Explanation of Embodiments) Next, embodiments of the present invention will be explained with reference to the drawings. ・Then, Fig. 4 shows a plate spring (10
shows the The plate spring (100) has a rectangular spring steel plate base (10) whose outer circumference is approximately similar to the bottom outer circumference of the groove (54, 55, 56) shown in FIG. It consists of a tongue (103) which is continuous with one end of the base and the other end (10) is bent upward.The tip (105) of the tongue (103) is the fourth
In the figure, it forms three sides of a rectangle, but as shown in FIG. Preferably, the plate spring (11) shown in FIG.
0), the continuous part (104ri) has a gently warped rising curve shape, so that when it is pressed from above as seen in the figure, the corner n-curve v part, that is, the continuous part ( 104') to prevent stress from concentrating on the continuous part 041) in Fig. 5.
As shown in the figure, when it is pressed from above, the stress applied to the n-bent v part is dispersed. ”
It is designed to provide spring force and improve durability.

板細工バネ（１０す（または１１０　）　ｆ第１図に示
す軸方向の荷（５４，５５，５６）に、ｌ材付けるとき
はまずシールピン（６０，６１，６２）を挿入した俊第
９図で示すＣ方向から挿入する。したがって溝（５りの
側面はガイドとして板状基部い０りを案内し、かつ舌部
（，１０３）とシールピン（６２）とが摺接するので上
下左右ふ扛ることがなく、非常に組付けが容易になった
。また板細工バネ（１０す０１０）の保管時にからまり
合うことやと扛による取外しに時間がかかることなく保
管が容易になった。さらに板細工バネははね鋼板から容
易に打抜きできるので比較的に安仙１であるにも拘らず
、冨着尚さは板厚とｌ１１ｊ−となり有効ストロークが
大きく、即ち自由長が大きくとれるので、狭いスペース
の中でシールピンを常にハウジング内腔に押しつけかつ
完全な弾性板元性を有し適当な抑圧シール機能を完遂さ
せる。Plate spring (10s (or 110) f) When attaching the l material to the axial loads (54, 55, 56) shown in Fig. 1, first insert the seal pins (60, 61, 62) in Fig. 9. Insert from direction C shown by. Therefore, the side surface of the groove (5) serves as a guide to guide the plate-like base plate, and since the tongue (103) and the seal pin (62) come into sliding contact, it moves vertically and horizontally. It has become very easy to assemble.Also, it has become easier to store the plate spring (10s010) because it does not get tangled when stored, and it does not take time to remove it by combing. Crafted springs can be easily punched out of spring steel plates, so even though they are relatively cheap, the thickness of the spring is the same as the plate thickness, and the effective stroke is large, meaning the free length can be large, so it can be used in narrow spaces. The sealing pin is always pressed against the housing inner cavity and has a perfect elasticity to perform a proper suppressing sealing function.

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

第１図は従来の町変吐出振ベーンポンプの断面図、第２
図は従来の弾性部材の拡大斜視図、第３図は第２図の線
細工バネをポンプに取付けた使用状態を示す第１図と対
応した部分４１ム犬断面図、第４図および第５図はそれ
ぞれ異る本発明の実施例である板細工バネの斜視図、第
６図および第８図は第３図に対応した板細工バネを取付
けた状態をそれぞ扛示す部分拡大図で、第６図はハウジ
ング内腔−とリングｂｕ＋とがシール点において最も近
接した場合を示し、第８図は逆に両者が最も離扛た場合
を示す。第７図および第９図はそ扛ぞ牡第６図および第
８図のＡ−Ａ方向からみた１１］１１面図を示す０ １０・・・・・・ハウジング １６．１７．１８・・・圧力室 ２０・・・・・・内　腔 ２２・・・・・・枢動部 ５０・・・・・・リング ５４．５５．５６・・・溝 ５４’、ｓｓ’、ｓ６！、突起部 ６０．６１，６２・・・シールピン ６３・・・・・弾性台部材 １００．１１０・・・板細土バネ １０１、．１１１・・・板状基部 １０３．１１３・・・舌　部 １０４．１０４　’・・・連続部 １０５．１１５・・・端　部 代理人　弁理士　河　内　潤　二 ８３図 躬４図Figure 1 is a cross-sectional view of a conventional machihen discharge oscillating vane pump, Figure 2
The figure is an enlarged perspective view of a conventional elastic member, FIG. 3 is a cross-sectional view of a portion 41 corresponding to FIG. Each figure is a perspective view of a plate spring according to a different embodiment of the present invention, and FIGS. 6 and 8 are partially enlarged views showing the plate spring corresponding to FIG. 3 with the plate spring installed. FIG. 6 shows the case where the housing inner cavity - and the ring bu+ are closest to each other at the sealing point, and FIG. 8 shows the case where they are the most separated. Figures 7 and 9 show side views of the housing 16, 17, 18, and 11 as seen from the direction A-A in Figures 6 and 8. Pressure chamber 20...Inner cavity 22...Pivotal part 50...Ring 54.55.56...Groove 54', ss', s6! , protrusions 60, 61, 62... seal pin 63... elastic base member 100, 110... thin clay spring 101, . 111...Plate-shaped base 103.113...Tongue part 104.104'...Continuous part 105.115...End part Agent Patent attorney Jun Kawauchi 283 Figure 4

Claims (2)

【特許請求の範囲】[Claims] （１）ハウジング内に回転可能に支持されたロータと、
放射方向に出入可能に前記ロータに嵌合されたベーンと
、前記ハウジング内腔に設けた枢動部により枢動可能に
支持さｒしかつ前記ロータおよびベーンを取り囲むリン
グと、を有し、前記ハウジングの内腔と前記リングの外
周部との間に前記リングを枢動させる少くとも１個の液
圧的に離隔さ扛た圧力室を形成するように、前記リング
の外周部に前記ハウジングの内腔に開口する軸方向の溝
をイ〕する突起部、各前記溝の底に入扛らｎた弾性部材
、各前記溝の前記弾性部材上に配置されかつ前記内腔と
摺接して前記リングの外周部とハウジング内腔との間に
圧力室を形成させるシールビン、を有する可変吐出量ベ
ーンポンプにおいて、前記弾性部材は外周がほぼ前記溝
の底面外周に類似した形状をしかつばね銅製の板状基部
と前記基部から打抜か扛一端部を前ムじ基部と連続部で
もって迷わしじ他端部を上方に折り曲けらγした舌部と
、からなる板細工バネであることを特徴とする可変吐出
量ベーンポンプ。(1) A rotor rotatably supported within the housing;
a vane fitted to the rotor so as to be removable in a radial direction; a ring pivotally supported by a pivot portion provided in the housing inner cavity and surrounding the rotor and the vane; an outer periphery of the ring to form at least one hydraulically spaced pressure chamber for pivoting the ring between the inner lumen of the housing and the outer periphery of the ring; a protrusion forming an axial groove opening into the inner cavity; an elastic member disposed at the bottom of each groove; and an elastic member disposed on the elastic member of each groove and in sliding contact with the inner cavity; In a variable displacement vane pump having a seal bin that forms a pressure chamber between the outer periphery of the ring and the inner cavity of the housing, the elastic member has an outer periphery substantially similar to the bottom outer periphery of the groove and is made of a spring copper plate. It is characterized by being a plate-work spring consisting of a shaped base, and a tongue part that is punched out from the base and one end of which is bent in a straight line with a continuous part and the other end is bent upward. Variable displacement vane pump. （２）前記舌部の上方に折り曲けられる削配連続部は断
面がゆるやかなそり返り形立上り曲線状をなす特許請求
の範囲第１ＪＬ１に記載の可変吐出量ベーンポンプ。(2) The variable discharge amount vane pump according to claim 1, wherein the cut continuous portion bent upward of the tongue portion has a gently curved upward curve in cross section.