JPH09280166A - Swash plate type compressor shoe - Google Patents
Swash plate type compressor shoeInfo
- Publication number
- JPH09280166A JPH09280166A JP8086527A JP8652796A JPH09280166A JP H09280166 A JPH09280166 A JP H09280166A JP 8086527 A JP8086527 A JP 8086527A JP 8652796 A JP8652796 A JP 8652796A JP H09280166 A JPH09280166 A JP H09280166A
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- spherical surface
- swash plate
- piston
- conical tapered
- 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
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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
- F04B27/0878—Pistons
- F04B27/0886—Piston shoes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に、斜板式圧縮
機に用いられる半球状のシューに関する。The present invention relates to a hemispherical shoe used in a swash plate type compressor.
【０００２】[0002]
【従来の技術】図７に示すように、斜板式圧縮機は、シ
リンダブロック１内に配置されたピストン２と、回転軸
３と一体に回転可能に固定された斜板４と、ピストン２
と斜板４との間に介装される半球状のシュー５とを備え
ている。図示しない動力源によって回転軸３を回転させ
ると斜板４は回転運動を行い、斜板４の回転運動はシュ
ー５を介してピストン２の往復運動に変換される。ピス
トン２の往復運動によってシリンダボア６の容積を変化
させることにより、バルブシート９を通じて吸入した冷
媒ガス等の媒体を圧縮し、圧縮した媒体を圧縮機外部へ
送出する。2. Description of the Related Art As shown in FIG. 7, a swash plate type compressor comprises a piston 2 disposed in a cylinder block 1, a swash plate 4 fixed to be rotatable integrally with a rotating shaft 3, and a piston 2;
And a hemispherical shoe 5 interposed between the swash plate 4 and the swash plate 4. When the rotating shaft 3 is rotated by a power source (not shown), the swash plate 4 performs a rotating motion, and the rotating motion of the swash plate 4 is converted into a reciprocating motion of the piston 2 via the shoe 5. By changing the volume of the cylinder bore 6 by the reciprocating motion of the piston 2, a medium such as a refrigerant gas sucked through the valve seat 9 is compressed, and the compressed medium is sent out of the compressor.
【０００３】斜板式圧縮機において、半球状のシュー
は、自在軸受けであると同時に、高速で摺動する摺動子
の役割をも果たす重要な構成部品である。例えば、図８
に示すように、実公昭６１−４３９８１号公報には、ピ
ストン２に設けられた凹部７に摺接する球面状の頂部３
１と、斜板４の摺動面８に摺接する平坦な底部３２とを
備えた半球状の斜板式圧縮機用シュー３０が開示されて
いる。図８に示すシュー３０は、斜板４の回転運動によ
り生じる角度変化に対応してピストン２の凹部７内で回
転摺動する。しかしながら、シュー３０の摺動速度は毎
秒２０ｍ以上に達すると共に、シュー３０の球面状の頂
部３１及び平坦な底部３２はそれぞれピストン２の凹部
７及び斜板４の摺動面８により強い押圧力を受けるた
め、シュー３０は非常に過酷な使用環境に曝されること
となる。この場合、ピストン２の凹部７の曲面の全体に
わたって摺接する頂部３１を有するシュー３０では、斜
板式圧縮機の連続使用の結果、ピストン２の凹部７が球
面摩耗により侵食されてピストン２とシュー３０との間
でがたつきが生じるため、振動、騒音の増大の原因とな
り、最悪の場合圧縮機自体が破損してしまうことがあ
る。[0003] In a swash plate type compressor, a hemispherical shoe is an important component that plays a role of a slider that slides at a high speed while being a free bearing. For example, FIG.
As shown in Japanese Utility Model Publication No. Sho 61-43981, a spherical top portion 3 slidingly contacting a concave portion 7 provided in a piston 2 is disclosed in
1 and a hemispherical swash plate type shoe 30 having a flat bottom 32 slidingly contacting the sliding surface 8 of the swash plate 4 are disclosed. The shoe 30 shown in FIG. 8 is slidably rotated in the recess 7 of the piston 2 in accordance with the angle change caused by the rotation of the swash plate 4. However, the sliding speed of the shoe 30 reaches 20 m / sec or more, and the spherical top portion 31 and the flat bottom portion 32 of the shoe 30 exert a strong pressing force by the concave portion 7 of the piston 2 and the sliding surface 8 of the swash plate 4 respectively. Therefore, the shoe 30 is exposed to a very severe use environment. In this case, in the shoe 30 having the top portion 31 that slides over the entire curved surface of the concave portion 7 of the piston 2, the concave portion 7 of the piston 2 is eroded by spherical wear as a result of continuous use of the swash plate type compressor, and the piston 2 and the shoe 30 are eroded. As a result, there is a backlash between them, which causes an increase in vibration and noise, and in the worst case, the compressor itself may be damaged.
【０００４】これに対して、特公平３−５１９１２号公
報には、図９に示すような避退球面４３を有するシュー
４０が示されている。シュー４０の頂部は、ピストン２
の凹部７とほぼ同一の曲率半径をもつ基準球面４１と、
基準球面４１より中心方向へ避退した避退球面４３とに
よって構成されているため、摺動時にピストン２の凹部
７とシュー４０の避退球面４３との間に空隙４４が生じ
る。基準球面４１により面圧の過大化が防止できると同
時に、空隙４４に潤滑油が保持され、シュー４０の摺動
に伴って発生しうるピストン２の凹部７が球面摩耗が防
止される。On the other hand, Japanese Patent Publication No. 3-51912 discloses a shoe 40 having a retreating spherical surface 43 as shown in FIG. The top of the shoe 40 is the piston 2
A reference spherical surface 41 having substantially the same radius of curvature as the concave portion 7;
Since it is constituted by the retracted spherical surface 43 retracted in the center direction from the reference spherical surface 41, a gap 44 is generated between the concave portion 7 of the piston 2 and the retracted spherical surface 43 of the shoe 40 during sliding. The reference spherical surface 41 can prevent the surface pressure from being excessively increased, and at the same time, the lubricating oil can be held in the gap 44 so that the concave portion 7 of the piston 2 that can be caused by the sliding of the shoe 40 can be prevented from spherical wear.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、図９の
シュー４０においては、基準球面４１に連続する避退球
面４３の形状が新たな問題の原因となりうる。即ち、図
１０に示すように、シュー４０の場合、凹部７と避退球
面４３とにより形成される空隙４４は基準球面４１に向
かって鋭く尖った形状となる。このため、空隙４４には
潤滑油が保持されているもののその分量は充分でなく、
また、空隙４４の先細り形状により、凹部７と基準球面
４１との摺接部分へ円滑に潤滑油が供給されない難点が
ある。他面、避退球面４３は基準球面４１よりゆるやか
に中心方向へ避退しているため、シュー４０を精密冷間
鍛造法により製造する場合、鍛造成形終了後にシュー４
０を金型から押し出すときに避退球面４３において金型
との間で大きな摩擦力を生じ、押し出しに余分な力を必
要とする。従って、鍛造により成形されたシュー４０
が、金型からの押し出しのときに望ましくない形状に変
形するおそれがある。However, in the shoe 40 shown in FIG. 9, the shape of the retreating sphere 43 continuous with the reference sphere 41 may cause a new problem. That is, as shown in FIG. 10, in the case of the shoe 40, the gap 44 formed by the concave portion 7 and the retreating spherical surface 43 has a sharply pointed shape toward the reference spherical surface 41. For this reason, although the lubricating oil is held in the space 44, its amount is not sufficient,
Further, there is a problem that lubricating oil is not supplied smoothly to the sliding contact portion between the concave portion 7 and the reference spherical surface 41 due to the tapered shape of the gap 44. On the other hand, since the evacuation spherical surface 43 is gently retracted toward the center from the reference spherical surface 41, when the shoe 40 is manufactured by the precision cold forging method, the shoe 4
When 0 is extruded from the mold, a large frictional force is generated between the evacuation spherical surface 43 and the mold, and an extra force is required for extrusion. Therefore, the shoe 40 formed by forging
However, when extruded from a mold, it may be deformed into an undesirable shape.
【０００６】一方、斜板式圧縮機を円滑に機能させるた
めには、ピストン、斜板及びシューにより形成されるク
リアランスを厳密に管理する必要がある。クリアランス
管理の手段の一つとしては、数ミクロンの巾でランク分
けを行った種々の高さのシューを用意し、その中から適
切な高さのものを選択して圧縮機に組み込む方法があ
る。しかしながら、この方法によると、ランク分けを行
ったシューは数十種類にも及ぶこととなり、それぞれの
シューを製造するための金型が複数種類必要となる。さ
らに、金型の形状に応じて鍛造用素材の体積が決定され
るため、鍛造用素材も複数の種類を用意しなければなら
ず、コスト高を招くこととなる。さらに、各種の鍛造用
素材の体積差はごくわずかであるため、異なる体積の素
材が誤って混入しても外観から識別することは不可能で
ある。金型所定の素材よりも体積の大きい素材を誤って
鍛造加工すると、シューに有害なバリが発生したり、極
端な場合には金型の破損を招くおそれがある。一方、金
型所定の素材よりも体積の小さい素材を誤って鍛造加工
すると、ピストンの凹部及び斜板の摺接面との各摺接面
積が十分でない不具合が発生する。金型所定の鍛造用素
材以外の素材を誤って加工しないために、素材の重量を
１個ずつ測定してふるい分ける方法もあるが、素材の測
定・ふるい分けが鍛造の速度に追いつかないこと、測定
機のキャリブレーションを頻繁に行う手間を要すること
が問題となる上、鍛造機の近傍での重量測定は、メカニ
カルプレスから発生する振動により測定精度が確保でき
ない不具合があった。On the other hand, in order for the swash plate compressor to function smoothly, it is necessary to strictly control the clearance formed by the piston, the swash plate and the shoes. As one of the clearance management means, there is a method of preparing shoes of various heights ranked in a width of several microns, selecting an appropriate height from among them, and incorporating it into a compressor. . However, according to this method, there are tens of types of shoes that have been ranked, and a plurality of types of dies are required to manufacture each shoe. Further, since the volume of the forging material is determined according to the shape of the die, a plurality of types of forging materials must be prepared, which leads to an increase in cost. Furthermore, since the volume difference between various forging materials is very small, it is impossible to identify from the appearance even if materials having different volumes are mixed by mistake. If a material having a larger volume than the predetermined material of the mold is forged by mistake, harmful burrs may be generated on the shoe, or in extreme cases, the mold may be damaged. On the other hand, if a material having a smaller volume than the predetermined material of the die is forged by mistake, there occurs a problem that the sliding contact area between the concave portion of the piston and the sliding contact surface of the swash plate is not sufficient. There is a method of sieving by measuring the weight of each material one by one in order to prevent the material other than the specified forging material from being mistakenly processed.However, the measurement and sieving of the material cannot keep up with the forging speed. In addition to the problem that frequent calibration of the machine is required, the weight measurement in the vicinity of the forging machine has a problem that the measurement accuracy cannot be secured due to the vibration generated by the mechanical press.
【０００７】そこで、本発明は、前記種々の問題を解決
する斜板式圧縮機用シューを提供することを目的とす
る。Accordingly, an object of the present invention is to provide a shoe for a swash plate type compressor which solves the above various problems.
【０００８】[0008]
【課題を解決するための手段】本発明による半球状の斜
板式圧縮機用シューは、ピストンに設けられた凹部に摺
接する球面を有する頂部と、斜板の摺動面に摺接する底
部とを備えている。また、頂部から底部に向かうにつれ
て拡径する円錐テーパ面が頂部と底部との間に且つ頂部
の球面から延伸する仮想球面よりも内側に形成される。
円錐テーパ面は頂部と底部との間に異なる円錐角度で２
以上形成してもよい。シューの頂部には平面部を形成し
てもよい。頂部の球面の高さはシュー全体の高さの７分
の２〜５分の３である。頂部の球面と円錐テーパ面との
接続部において、頂部の球面に接する仮想平面と円錐テ
ーパ面の母線とがなす角度は１０°〜３０°である。さ
らに、頂部に穴を形成してもよい。SUMMARY OF THE INVENTION A hemispherical swash plate type shoe according to the present invention comprises a top having a spherical surface which is in sliding contact with a recess provided in a piston, and a bottom which is in sliding contact with a sliding surface of the swash plate. Have. In addition, a conical tapered surface whose diameter increases from the top to the bottom is formed between the top and the bottom and inside a virtual spherical surface extending from the spherical surface at the top.
The conical taper surface has two different cone angles between the top and bottom.
The above may be formed. A flat portion may be formed on the top of the shoe. The height of the top sphere is two-sevenths to three-fifths the height of the entire shoe. In the connection between the top spherical surface and the conical tapered surface, the angle formed by the virtual plane contacting the top spherical surface and the generatrix of the conical tapered surface is 10 ° to 30 °. Further, a hole may be formed at the top.
【０００９】本発明の斜板式圧縮機用シューでは、頂部
の球面から延伸する仮想球面よりも内側に円錐テーパ面
を設けたので、ピストンの凹部と円錐テーパ面との間に
弓形の比較的大きな空隙が形成される。この空隙によ
り、充分な量の潤滑油が保持され、頂部の球面とピスト
ンの凹部との摺接部分へ円滑に潤滑油が供給される。ま
た、シューの製造時に、成形されたシューを金型から容
易に押し出すことができる。In the swash plate type compressor shoe of the present invention, since the conical taper surface is provided inside the imaginary spherical surface extending from the top spherical surface, a relatively large arc-shaped portion is formed between the concave portion of the piston and the conical taper surface. Voids are formed. By this gap, a sufficient amount of lubricating oil is held, and lubricating oil is smoothly supplied to the sliding contact portion between the spherical surface at the top and the concave portion of the piston. Further, at the time of manufacturing the shoe, the formed shoe can be easily extruded from the mold.
【００１０】さらに、本発明によれば、円錐テーパ面の
角度、円錐テーパ面の開始位置及び円錐テーパ面の数を
変更でき、同一体積の素材から種々の高さのシューが成
形可能となる。Further, according to the present invention, the angle of the conical taper surface, the starting position of the conical taper surface, and the number of the conical taper surfaces can be changed, and shoes of various heights can be formed from a material having the same volume.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を図１
〜図７に基づいて説明する。FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG.
【００１２】本発明による半球状の斜板式圧縮機用シュ
ーの第１の実施形態を図１に示す。図１のシュー５は、
図７に示すような斜板式圧縮機において、ピストン２に
設けられた凹部７に摺接する球面１０を有する頂部１１
と、斜板４の摺動面８に摺接する底部１２とを備えてい
る。また、図２に示すように、円錐テーパ面１３が頂部
１１と底部１２との間に且つ頂部１１の球面１０から延
伸する仮想球面１５よりも内側に形成される。円錐テー
パ面１３は頂部１１から底部１２に向かうにつれて拡径
する形状を有する。底部１２には、その中央部に平坦面
１６が形成されると共に、平坦面１６の周囲に切欠面１
７が設けられる。切欠面１７は斜板４の摺動面８との間
にクリアランスを形成し、シュー５と斜板４との摺動部
分への潤滑油の供給を円滑にする。FIG. 1 shows a first embodiment of a hemispherical swash plate type shoe according to the present invention. The shoe 5 in FIG.
In a swash plate type compressor as shown in FIG. 7, a top portion 11 having a spherical surface 10 slidably contacting a concave portion 7 provided in a piston 2.
And a bottom portion 12 slidably in contact with the sliding surface 8 of the swash plate 4. As shown in FIG. 2, a conical tapered surface 13 is formed between the top 11 and the bottom 12 and inside a virtual sphere 15 extending from the spherical surface 10 of the top 11. The conical tapered surface 13 has a shape whose diameter increases from the top 11 to the bottom 12. A flat surface 16 is formed in the center of the bottom portion 12, and a notch surface 1 is formed around the flat surface 16.
7 are provided. The notch 17 forms a clearance between the swash plate 4 and the sliding surface 8, and facilitates the supply of lubricating oil to the sliding portion between the shoe 5 and the swash plate 4.
【００１３】本発明では、円錐テーパ面は１つ又は異な
る円錐角度で２以上形成することができる。例えば、図
１の第１の実施形態では第１円錐テーパ面１３に連続し
て第２円錐テーパ面１８を形成するのに対し、図３に示
す第２の実施形態では１つの円錐テーパ面１３を形成し
ている。また、図示しないが、３つ以上の円錐テーパ面
を設けることも可能である。さらに、シュー５の頂部１
１には平面部１９が形成される。According to the present invention, the conical taper surface can be formed in one or two or more with different conical angles. For example, in the first embodiment of FIG. 1, the second conical taper surface 18 is formed continuously to the first conical taper surface 13, whereas in the second embodiment shown in FIG. Is formed. Although not shown, it is also possible to provide three or more conical tapered surfaces. Furthermore, the top 1 of the shoe 5
A flat portion 19 is formed on 1.
【００１４】本発明のシュー５では、頂部１１の球面１
０によりピストン２の凹部７に摺接する面積を確保でき
ると同時に、頂部１１の球面１０から延伸する仮想球面
１５よりも内側に円錐テーパ面１３を設けたことによ
り、ピストン２の凹部７と円錐テーパ面１３との間に弓
形の比較的大きな空隙２３が形成される。空隙２３には
充分な量の潤滑油が保持され、さらに図９及び図１０に
示す従来のシュー４０の空隙４４ほど先細り形状が顕著
でないため、頂部１１の球面１０とピストン２の凹部７
との摺接部分へ円滑に潤滑油が供給されることとなる。
但し、頂部１１の球１０面とピストン２の凹部７との摺
接部分の面積が小さすぎると、頂部１１の球面１０によ
りピストン２の凹部７が侵食され、ピストン２とシュー
５との間でがたつきが発生するおそれがある。このた
め、頂部１１の球面１０の高さＡはシュー５の全体の高
さの７分の２〜５分の３の範囲に設定することが望まし
い。同様の理由により、頂部１１の球面１０と円錐テー
パ面１３との接続部２０において、頂部１１の球面１０
に接する仮想平面２１と円錐テーパ面１３の母線２２と
がなす角度θは１０°〜３０°の範囲とすることが望ま
しい。さらに、シュー５の頂部１１に設けた平面部１９
により、ピストン２の凹部７との間に潤滑油の保持領域
が形成され、摺接部分への潤滑油の供給が一層促進され
る。In the shoe 5 of the present invention, the spherical surface 1 of the top 11
0, the area for sliding contact with the concave portion 7 of the piston 2 can be secured, and at the same time, the conical tapered surface 13 is provided inside the imaginary spherical surface 15 extending from the spherical surface 10 of the top portion 11, so that the concave portion 7 of the piston 2 and the conical taper are provided. A relatively large arc-shaped gap 23 is formed with the surface 13. Since a sufficient amount of lubricating oil is held in the gap 23 and the tapered shape is not so remarkable as the gap 44 of the conventional shoe 40 shown in FIGS. 9 and 10, the spherical surface 10 of the top 11 and the concave portion 7 of the piston 2 are formed.
The lubricating oil is smoothly supplied to the sliding contact portion with the lubricating oil.
However, if the area of the sliding portion between the surface of the ball 10 of the top 11 and the recess 7 of the piston 2 is too small, the recess 7 of the piston 2 is eroded by the spherical surface 10 of the top 11 and the space between the piston 2 and the shoe 5 Rattling may occur. For this reason, the height A of the spherical surface 10 of the top 11 is desirably set in a range of 2/7 to 3/5 of the overall height of the shoe 5. For the same reason, at the connection portion 20 between the spherical surface 10 of the top 11 and the conical tapered surface 13, the spherical surface 10 of the top 11
Is desirably in the range of 10 ° to 30 ° between the imaginary plane 21 that is in contact with and the generatrix 22 of the conical tapered surface 13. Furthermore, a flat portion 19 provided on the top 11 of the shoe 5
Thereby, a lubricating oil holding region is formed between the piston 2 and the concave portion 7, and the supply of the lubricating oil to the sliding contact portion is further promoted.
【００１５】図１に示すシュー５は、特公平７−２４９
１３号公報等により公知の冷間鍛造方法により製造する
ことができる。冷間鍛造における圧縮行程の初期状態を
図５に示す。図５では、図示しないメカニカルプレス上
において、下側金型５２の凹部５５に焼きなましを行っ
たボール形状の鍛造用素材５０を配置された状態で上側
金型５１が下降して、上側金型５１が鍛造用素材５０の
上端に接している。下側金型５２の凹部５５にはシュー
５の円錐テーパ面１３及び１８をそれぞれ形成するため
の円錐面５６及び５７が設けられている。下側金型５２
内部にはノックアウトパンチ５３が設けられ、ノックア
ウトパンチ５３の先端５４が鍛造用素材５０の下端に接
する。図５の状態からさらに上側金型５１を下降させ、
上側金型５１と下側金型５２とが密着した状態を図６に
示す。図６の状態で鍛造用素材５０からシュー５への成
形が完了し、この後上側金型５１を上昇させ、ノックア
ウトパンチ５３により鍛造用素材５０（シュー５）を下
側金型５２から押し出す。The shoe 5 shown in FIG.
It can be manufactured by a cold forging method known from Japanese Patent No. 13 and the like. FIG. 5 shows the initial state of the compression stroke in cold forging. In FIG. 5, the upper mold 51 is lowered on a mechanical press (not shown) in a state where the ball-shaped forging material 50 in which the recess 55 of the lower mold 52 has been annealed is placed. Is in contact with the upper end of the forging material 50. Concave surfaces 56 and 57 for forming the conical tapered surfaces 13 and 18 of the shoe 5, respectively, are provided in the concave portion 55 of the lower mold 52. Lower mold 52
A knockout punch 53 is provided inside, and a tip end 54 of the knockout punch 53 contacts a lower end of the forging material 50. The upper mold 51 is further lowered from the state of FIG.
FIG. 6 shows a state in which the upper mold 51 and the lower mold 52 are in close contact with each other. In the state of FIG. 6, the forming of the forging material 50 into the shoe 5 is completed. Thereafter, the upper mold 51 is raised, and the forging material 50 (shoe 5) is pushed out of the lower mold 52 by the knockout punch 53.
【００１６】本発明によれば、円錐テーパ面１３を設け
たことにより、ノックアウトパンチ５３によりシュー５
を下側金型５２から押し出すことが容易となる。即ち、
図９に示す従来のシュー４０では避退球面４３がゆるや
かに中心方向へ避退しているために金型からの押し出し
に余分な力が必要なのに対し、本発明では、円錐テーパ
面１３が直線的に仮想球面１５の内側へ延びるため、下
側金型５２との間で作用する摩擦力が緩和され、無理な
くノックアウトパンチ５３によりシュー５を押し出すこ
とが可能となる。従って、鍛造成形後のシュー５がノッ
クアウトパンチ５３の先端５４の押圧力により変形され
る量をごく僅かにとどめることができる。実際の鍛造で
は、図８に示すような全面球形状の従来のシュー３０と
比較して、プレスの成形圧に大きな差はなく、また、鍛
造速度の低下も見られず、鍛造性は良好であった。According to the present invention, the provision of the conical tapered surface 13 allows the knockout punch 53 to use the shoe 5.
Is easily extruded from the lower mold 52. That is,
In the conventional shoe 40 shown in FIG. 9, an extra force is required for pushing out from the mold because the retreating spherical surface 43 is retreating slowly toward the center. Since it extends inwardly of the virtual spherical surface 15, the frictional force acting between the lower mold 52 and the lower mold 52 is reduced, and the shoe 5 can be pushed out by the knockout punch 53 without difficulty. Therefore, the amount by which the shoe 5 after forging is deformed by the pressing force of the tip end 54 of the knockout punch 53 can be kept very small. In the actual forging, there is no large difference in the molding pressure of the press and no decrease in the forging speed as compared with the conventional spherical shoe 30 as shown in FIG. there were.
【００１７】さらに、本発明によれば、円錐テーパ面１
３の角度、開始位置及び数を金型によって適宜設定する
ことにより、金型毎に体積の異なる種々の鍛造用素材を
用意することなく、同一体積の素材から種々の高さのシ
ューが成形可能となる。従って、従来の金型と鍛造用素
材との組み合わせの煩雑な管理が不要となりシュー５の
製造工程が大幅に簡略化されてコスト高が解消されると
共に、シュー５の表面における有害なバリの発生及び金
型の破損が防止され、ピストン２の凹部７及び斜板４の
摺接面８との各摺接面積の確保が可能となる。また、シ
ュー５の頂部１１に平面部１９を設けた場合は、一層高
さ調整が容易となる。Further, according to the present invention, the conical tapered surface 1
By appropriately setting the angle, starting position and number of 3 depending on the mold, shoes of various heights can be formed from a material of the same volume without preparing various forging materials with different volumes for each mold. Becomes Therefore, complicated management of the conventional combination of the die and the forging material is not required, the manufacturing process of the shoe 5 is greatly simplified, the cost is eliminated, and harmful burrs are generated on the surface of the shoe 5. In addition, the mold is prevented from being damaged, and the sliding contact area between the concave portion 7 of the piston 2 and the sliding contact surface 8 of the swash plate 4 can be secured. When the flat portion 19 is provided on the top 11 of the shoe 5, the height can be adjusted more easily.
【００１８】図１及び図３に示したシュー５は、同一体
積の素材を用いて鍛造成形したものである。図１に示す
第１の実施形態では、第１及び第２円錐テーパ面１３、
１８を形成し且つ頂部１１の球面１０の高さＡを大きく
設定し、シュー全体の高さを小さくしている。これに対
して、図３に示す第２の実施形態では、一の円錐テーパ
面１３を第１の実施形態の各円錐テーパ面よりも大きく
形成し且つ頂部１１の球面１０の高さＡを小さく設定
し、シュー全体の高さを大きくしている。図１のシュー
５と図３のシュー５との間では、高さの差が０.２５ｍ
ｍに達し、数ミクロン巾でのランク分けによれば数十ラ
ンクに相当する範囲の高さのシュー５が同一体積の素材
から製造可能となる。The shoe 5 shown in FIGS. 1 and 3 is forged using a material having the same volume. In the first embodiment shown in FIG. 1, the first and second conical tapered surfaces 13,
18, the height A of the spherical surface 10 of the top 11 is set to be large, and the height of the entire shoe is reduced. On the other hand, in the second embodiment shown in FIG. 3, one conical tapered surface 13 is formed larger than each conical tapered surface of the first embodiment, and the height A of the spherical surface 10 of the top 11 is made smaller. The height of the entire shoe has been increased by setting. The height difference between shoe 5 in FIG. 1 and shoe 5 in FIG.
m, and according to the rank division with a width of several microns, the shoes 5 having a height in a range corresponding to several tens of ranks can be manufactured from a material having the same volume.
【００１９】本発明の実施形態は前記のものに限定され
ず、種々の変更が可能である。例えば、頂部１１に設け
た平面部１９は省略してもよい。また、図４に示すよう
に、頂部１１に設けた平面部１９の中央部に潤滑油貯留
用の穴２５を形成してもよい。頂部と底部との間に異な
る円錐角度で３つ以上のテーパ部を形成したり、複数の
テーパ部の間に部分的に球面部を形成してもよい。The embodiments of the present invention are not limited to those described above, and various modifications are possible. For example, the flat portion 19 provided on the top 11 may be omitted. Further, as shown in FIG. 4, a hole 25 for storing lubricating oil may be formed in a central portion of the flat portion 19 provided on the top portion 11. Three or more tapered portions may be formed at different cone angles between the top portion and the bottom portion, or a spherical portion may be partially formed between the plurality of tapered portions.
【００２０】[0020]
【発明の効果】本発明によれば、圧縮機運転時に潤滑油
の円滑な供給が促進できると共に、製造時のコストを低
減できる斜板式圧縮機用シューが提供できる。According to the present invention, it is possible to provide a swash plate type compressor shoe capable of promoting smooth supply of lubricating oil during operation of the compressor and reducing manufacturing costs.
【図１】 本発明によるシューの第１の実施形態を示す
正面図FIG. 1 is a front view showing a first embodiment of a shoe according to the present invention.
【図２】 図１のシューとピストンの凹部との摺動部分
を示す拡大断面図FIG. 2 is an enlarged sectional view showing a sliding portion between a shoe and a recess of a piston in FIG. 1;
【図３】 本発明によるシューの第２の実施形態を示す
正面図FIG. 3 is a front view showing a second embodiment of a shoe according to the present invention.
【図４】 本発明によるシューの第３の実施形態を示す
正面図FIG. 4 is a front view showing a third embodiment of a shoe according to the present invention.
【図５】 シューの第１の鍛造工程を示す要部断面図FIG. 5 is an essential part cross-sectional view showing a first forging step of a shoe.
【図６】 シューの第２の鍛造工程を示す要部断面図FIG. 6 is a sectional view of a main part showing a second forging step of the shoe.
【図７】 斜板式圧縮機の断面図FIG. 7 is a sectional view of a swash plate type compressor.
【図８】 従来の斜板式圧縮機用シューを示す断面図FIG. 8 is a sectional view showing a conventional shoe for a swash plate type compressor.
【図９】 他の従来の斜板式圧縮機用シューを示す断面
図FIG. 9 is a sectional view showing another conventional shoe for a swash plate type compressor.
【図１０】 図９の部分拡大断面図10 is a partially enlarged sectional view of FIG. 9;
２・・ピストン、 ４・・斜板、 ５・・シュー、 ７
・・凹部、 ８・・摺動面、 １０・・球面、 １１・
・頂部、 １２・・底部、 １３・・円錐テーパ面、
１５・・仮想球面、 １９・・平面部、 ２０・・接続
部、 ２１・・仮想平面、 ２２・・母線、 ２５・・
穴2. Piston, 4. Swash plate, 5. Shoe, 7
..Recess, 8 ·· Sliding surface, 10 ·· Spherical surface, 11 ·
・ Top, 12 ・ ・ Bottom, 13 ・ ・ Conical taper surface,
15 virtual sphere, 19 flat part, 20 connection part, 21 virtual plane, 22 bus, 25
hole
Claims (6)
面を有する頂部と、斜板の摺動面に摺接する底部とを備
えた半球状の斜板式圧縮機用シューにおいて、 頂部から底部に向かうにつれて拡径する円錐テーパ面を
頂部と底部との間に且つ頂部の球面から延伸する仮想球
面よりも内側に形成したことを特徴とする斜板式圧縮機
用シュー。1. A hemispherical swash plate compressor shoe having a top portion having a spherical surface that slides on a concave portion provided on a piston and a bottom portion sliding on a sliding surface of a swash plate, wherein the shoe goes from the top to the bottom. A swash plate type compressor shoe characterized in that a conical tapered surface that expands in diameter is formed between the top and bottom and inside a virtual spherical surface extending from the spherical surface at the top.
以上の円錐テーパ面を形成した請求項１に記載の斜板式
圧縮機用シュー。2. The method of claim 2, wherein the cone and the top have different cone angles between the top and bottom.
The swash plate type compressor shoe according to claim 1, wherein the conical tapered surface is formed.
の斜板式圧縮機用シュー。3. The swash plate type compressor shoe according to claim 1, wherein a flat portion is formed on a top portion.
７分の２〜５分の３である請求項１に記載の斜板式圧縮
機用シュー。4. The swash plate compressor shoe according to claim 1, wherein the height of the spherical surface at the top is 2/7 to 3/5 of the height of the entire shoe.
おいて、頂部の球面に接する仮想平面と円錐テーパ面の
母線とがなす角度は１０°〜３０°である請求項１に記
載の斜板式圧縮機用シュー。5. The oblique angle according to claim 1, wherein an angle formed between a virtual plane contacting the top spherical surface and a generatrix of the conical tapered surface is 10 ° to 30 ° at a connection portion between the top spherical surface and the conical tapered surface. Shoe for plate type compressor.
板式圧縮機用シュー。6. The shoe for a swash plate compressor according to claim 1, wherein a hole is formed in a top portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08652796A JP3803135B2 (en) | 1996-04-09 | 1996-04-09 | Shoe for swash plate compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08652796A JP3803135B2 (en) | 1996-04-09 | 1996-04-09 | Shoe for swash plate compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09280166A true JPH09280166A (en) | 1997-10-28 |
| JP3803135B2 JP3803135B2 (en) | 2006-08-02 |
Family
ID=13889471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08652796A Expired - Fee Related JP3803135B2 (en) | 1996-04-09 | 1996-04-09 | Shoe for swash plate compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3803135B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001038733A1 (en) * | 1999-11-26 | 2001-05-31 | Taiho Kogyo Co., Ltd. | Sliding device |
| WO2001038734A1 (en) * | 1999-11-26 | 2001-05-31 | Taiho Kogyo Co., Ltd. | Semi-spherical shoe |
| WO2001038732A1 (en) * | 1999-11-26 | 2001-05-31 | Taiho Kogyo Co., Ltd. | Semi-spherical shoe |
| JP2010196695A (en) | 2009-01-30 | 2010-09-09 | Taiho Kogyo Co Ltd | Swash plate compressor |
| WO2010137194A1 (en) | 2009-05-28 | 2010-12-02 | 大豊工業株式会社 | Shoe |
| CN102141028A (en) * | 2011-02-12 | 2011-08-03 | 上海光裕汽车空调压缩机有限公司 | Slipper structure of bidirectional inclined-plate type compressor |
-
1996
- 1996-04-09 JP JP08652796A patent/JP3803135B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001038733A1 (en) * | 1999-11-26 | 2001-05-31 | Taiho Kogyo Co., Ltd. | Sliding device |
| WO2001038734A1 (en) * | 1999-11-26 | 2001-05-31 | Taiho Kogyo Co., Ltd. | Semi-spherical shoe |
| WO2001038732A1 (en) * | 1999-11-26 | 2001-05-31 | Taiho Kogyo Co., Ltd. | Semi-spherical shoe |
| JP2010196695A (en) | 2009-01-30 | 2010-09-09 | Taiho Kogyo Co Ltd | Swash plate compressor |
| WO2010137194A1 (en) | 2009-05-28 | 2010-12-02 | 大豊工業株式会社 | Shoe |
| US9435327B2 (en) | 2009-05-28 | 2016-09-06 | Taiho Kogyo Co., Ltd. | Shoe |
| CN102141028A (en) * | 2011-02-12 | 2011-08-03 | 上海光裕汽车空调压缩机有限公司 | Slipper structure of bidirectional inclined-plate type compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3803135B2 (en) | 2006-08-02 |
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