JP2002005013A - Swash plate type compressor - Google Patents
Swash plate type compressorInfo
- Publication number
- JP2002005013A JP2002005013A JP2000193456A JP2000193456A JP2002005013A JP 2002005013 A JP2002005013 A JP 2002005013A JP 2000193456 A JP2000193456 A JP 2000193456A JP 2000193456 A JP2000193456 A JP 2000193456A JP 2002005013 A JP2002005013 A JP 2002005013A
- Authority
- JP
- Japan
- Prior art keywords
- swash plate
- piston
- sliding
- shoe
- film
- 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
- 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
-
- 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
- F04B27/10—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 having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1054—Actuating elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (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、斜板の回転運動を
ピストンの往復運動に変換して媒体を吸入吐出する斜板
式圧縮機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swash plate type compressor for converting a rotary motion of a swash plate into a reciprocating motion of a piston to suck and discharge a medium.
【０００２】[0002]
【従来の技術】例えば斜板式等の圧縮機では、部品同士
が摺動する摺動部の潤滑は、冷媒ガスにミスト状潤滑油
を運搬させて各摺動部に潤滑油を供給することで確保し
ている。ところが例えば低温下でかつ圧縮機の運転が初
期状態のときには、摺動部に付着していた潤滑油が冷媒
ガスによって洗い流され、摺動部はドライ状態になり易
いという実状がある。そこで各摺動部材が耐焼付性や耐
摩耗性に優れた摺動特性を有するように、各摺動部材に
は表面処理が施されている。2. Description of the Related Art For example, in a compressor of a swash plate type or the like, lubrication of a sliding portion in which parts slide is performed by supplying mist-like lubricating oil to a refrigerant gas and supplying the lubricating oil to each sliding portion. Is secured. However, for example, when the operation of the compressor is in an initial state at a low temperature, lubricating oil adhering to the sliding portion is washed away by the refrigerant gas, and the sliding portion tends to be in a dry state. Therefore, each sliding member is subjected to a surface treatment so that each sliding member has sliding characteristics excellent in seizure resistance and wear resistance.
【０００３】この種の表面処理技術として圧縮機の斜板
に表面処理を施した例が、例えば特開平８−１９９３２
７号公報、特開平１１−１９３７８０号公報等に開示さ
れている。先の公報では、斜板の母材の表面にＣｕまた
はＡｌ系材料を溶射することで溶射層を形成し、この溶
射層の表面にＰｂ系、Ｓｎ系、Ｐｂ−Ｓｎ系メッキ層
や、ＭｏＳ2、ＭｏＳ2・黒鉛混合物、ＰＴＦＥ等からな
る被覆層を形成している。また後の公報では、斜板の母
材の表面にＡｌ，Ｃｕ，Ｓｎ，Ｃｕ，金属塩酸等を主成
分とする中間層を形成し、その中間層の表面に熱硬化性
樹脂と、ＭｏＳ2およびグラファイトのうち少なくとも
１種からなる固体潤滑剤とを含む摺接層を形成してい
る。An example in which a swash plate of a compressor is subjected to surface treatment as a surface treatment technique of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 8-19932.
No. 7, JP-A-11-193780 and the like. In the above publication, a sprayed layer is formed by spraying a Cu or Al material on the surface of a base material of a swash plate, and a Pb-based, Sn-based, Pb-Sn-based plating layer, MoS 2 , a coating layer made of MoS 2 / graphite mixture, PTFE or the like is formed. In a later publication, an intermediate layer mainly composed of Al, Cu, Sn, Cu, metallic hydrochloric acid or the like is formed on the surface of a base material of a swash plate, and a thermosetting resin and MoS 2 are formed on the surface of the intermediate layer. And a sliding contact layer containing at least one of graphite and a solid lubricant.
【０００４】[0004]
【発明が解決しようとする課題】ところが、斜板の表面
に樹脂層を形成するときには研磨加工等が必要となるた
め、皮膜形成時の手間が余計にかかるという問題があっ
た。さらに上記各公報では、斜板表面が多層形成されて
いることに加え、溶射層や樹脂層等の膜層を形成すると
きに実施する前処理、研磨処理、焼成処理等の加工処理
が多いため、皮膜形成作業に手間がかかり、しかも相対
的にコストが増すという問題もあった。However, when a resin layer is formed on the surface of the swash plate, a polishing process or the like is required, so that there is a problem that extra work is required when forming the film. Further, in each of the above publications, in addition to the multilayered formation of the swash plate surface, there are many pretreatments, polishing treatments, baking treatments and other processing treatments performed when forming a film layer such as a thermal spray layer or a resin layer. In addition, there has been a problem that the work of forming a film takes time and the cost is relatively increased.
【０００５】本発明は前記の問題点に鑑みてなされたも
のであって、その目的は、構成部品同士が摺動する摺動
部の摺動特性を向上でき、しかもその皮膜形成時の作業
を簡単にできる斜板式圧縮機を提供することにある。The present invention has been made in view of the above problems, and an object of the present invention is to improve the sliding characteristics of a sliding portion in which constituent parts slide, and to reduce the work of forming a film. An object of the present invention is to provide a swash plate type compressor which can be simplified.
【０００６】[0006]
【課題を解決するための手段】前記の目的を達成するた
め請求項１に記載の発明では、駆動軸と一体回転可能に
組付けられた斜板と、当該斜板に少なくとも１つ係留さ
れた一対のシューと、当該シューを介して前記斜板と連
結されたピストンとを備えた斜板式圧縮機であって、圧
縮機駆動時に当該圧縮機を構成する構成部品同士が摺動
する各摺動部のうち、少なくとも一箇所に非晶質硬質炭
素膜が形成されている。According to the first aspect of the present invention, there is provided a swash plate integrally rotatable with a drive shaft, and at least one swash plate moored to the swash plate. A swash plate type compressor comprising a pair of shoes and a piston connected to the swash plate via the shoes, wherein each of the sliding members in which the components constituting the compressor slide when the compressor is driven. An amorphous hard carbon film is formed in at least one of the portions.
【０００７】この発明によれば、各摺動部の少なくとも
一箇所に形成された非晶質硬質炭素膜により、圧縮機駆
動時に摺動する構成部品は耐摩耗性や耐焼付性等の摺動
特性が向上し、その各構成部品、ひいては圧縮機の信頼
性が向上する。また非晶質硬質炭素膜を部品上に形成す
るとき、非晶質硬質炭素膜は膜厚や表面粗さ等の形成精
度（加工精度）が良いため、研磨処理等の加工処理をし
なくても必要とする膜厚や表面粗度が得られ、皮膜形成
作業が簡単になる。According to the present invention, the components slid when the compressor is driven are provided with sliding resistance such as wear resistance and seizure resistance by the amorphous hard carbon film formed in at least one portion of each sliding portion. The characteristics are improved, and the reliability of each component, and thus the compressor, is improved. Also, when forming an amorphous hard carbon film on a part, the amorphous hard carbon film has good forming accuracy (processing accuracy) such as film thickness and surface roughness. The required film thickness and surface roughness are also obtained, and the film forming operation is simplified.
【０００８】請求項２に記載の発明では、請求項１に記
載の発明において、前記非晶質硬質炭素膜は、前記斜
板、シュー及びピストンが摺動する摺動部のうち、少な
くとも一箇所に形成されている。According to a second aspect of the present invention, in the first aspect of the present invention, the amorphous hard carbon film is provided in at least one of sliding portions on which the swash plate, the shoe, and the piston slide. Is formed.
【０００９】この発明によれば、請求項１に記載の発明
の作用に加え、斜板、シュー、ピストンの摺動部分に摩
耗や焼付けが起こり難くなり、斜板、シュー、ピストン
の信頼性が向上する。According to the present invention, in addition to the effect of the first aspect of the present invention, the sliding portions of the swash plate, the shoe, and the piston are less likely to wear and seize, and the reliability of the swash plate, the shoe, and the piston is reduced. improves.
【００１０】請求項３に記載の発明では、請求項１又は
２に記載の発明において、前記斜板のシューとの摺動面
には、前記非晶質硬質炭素膜が形成されている。この発
明によれば、請求項１又は２に記載の発明の作用に加
え、シューに対する斜板の摺動面に形成された非晶質硬
質炭素膜により、その摺動面は高い摺動特性を有する。
よってこの斜板の摺動面により、斜板とシューとの間で
摩耗や焼付け等が起こり難くなり、斜板、シュー等の信
頼性が向上する。According to a third aspect of the present invention, in the first or second aspect, the amorphous hard carbon film is formed on a sliding surface of the swash plate with a shoe. According to this invention, in addition to the effect of the invention described in claim 1 or 2, the sliding surface of the swash plate has high sliding characteristics due to the amorphous hard carbon film formed on the sliding surface with respect to the shoe. Have.
Therefore, due to the sliding surface of the swash plate, abrasion, seizure and the like hardly occur between the swash plate and the shoe, and the reliability of the swash plate, the shoe, and the like is improved.
【００１１】請求項４に記載の発明では、請求項１又は
２に記載の発明において、前記シューの前記斜板との摺
動面には、前記非晶質硬質炭素膜が形成されている。こ
の発明によれば、請求項１又は２に記載の発明の作用に
加え、斜板に対するシューの摺動面に形成された非晶質
硬質炭素膜により、その摺動面は高い摺動特性を有す
る。よってこのシューの摺動面により、斜板とシューと
の間で摩耗や焼付け等が起こり難くなり、斜板、シュー
等の信頼性が向上する。According to a fourth aspect of the present invention, in the first or second aspect, the amorphous hard carbon film is formed on a sliding surface of the shoe with the swash plate. According to this invention, in addition to the effect of the invention described in claim 1 or 2, the sliding surface of the shoe has high sliding characteristics due to the amorphous hard carbon film formed on the sliding surface of the shoe with respect to the swash plate. Have. Therefore, due to the sliding surface of the shoe, abrasion, seizure, and the like hardly occur between the swash plate and the shoe, and the reliability of the swash plate, the shoe, and the like is improved.
【００１２】請求項５に記載の発明では、請求項１〜４
のうちいずれか一項に記載の発明において、前記シュー
の前記ピストンとの摺動面には、前記非晶質硬質炭素膜
が形成されている。According to the fifth aspect of the present invention, the first to fourth aspects are provided.
In the invention described in any one of the above, the amorphous hard carbon film is formed on a sliding surface of the shoe with the piston.
【００１３】この発明によれば、請求項１〜４のうちい
ずれか一項に記載の発明の作用に加え、ピストンに対す
るシューの摺動面に形成された非晶質硬質炭素膜によ
り、その摺動面は高い摺動特性を有する。よってこのシ
ューの摺動面により、シューとピストンとの間で摩耗や
焼付け等が起こり難くなり、シュー、ピストン等の信頼
性が向上する。According to the present invention, in addition to the function of any one of the first to fourth aspects, the sliding of the amorphous hard carbon film formed on the sliding surface of the shoe with respect to the piston causes the sliding. The moving surface has high sliding characteristics. Therefore, due to the sliding surface of the shoe, wear, seizure and the like are less likely to occur between the shoe and the piston, and the reliability of the shoe, the piston and the like is improved.
【００１４】請求項６に記載の発明では、請求項１〜４
のうちいずれか一項に記載の発明において、前記ピスト
ンの外面には、少なくとも前記シューとの摺動面に前記
非晶質硬質炭素膜が形成されている。According to the sixth aspect of the present invention, the first to fourth aspects are provided.
In the invention described in any one of the above, the amorphous hard carbon film is formed on an outer surface of the piston at least on a sliding surface with the shoe.
【００１５】この発明によれば、請求項１〜４のうちい
ずれか一項に記載の発明の作用に加え、少なくともシュ
ーに対するピストンの摺動面に形成された非晶質硬質炭
素膜により、その摺動面は高い摺動特性を有する。よっ
てこのピストンの摺動面により、シューとピストンとの
間で摩耗や焼付け等が起こり難くなり、シュー、ピスト
ンの信頼性が向上する。According to this invention, in addition to the function of any one of the first to fourth aspects, the amorphous hard carbon film formed on at least the sliding surface of the piston with respect to the shoe provides The sliding surface has high sliding characteristics. Therefore, due to the sliding surface of the piston, wear, seizure and the like are less likely to occur between the shoe and the piston, and the reliability of the shoe and the piston is improved.
【００１６】請求項７に記載の発明では、請求項１〜６
のうちいずれか一項に記載の発明において、前記ピスト
ンの外面には、少なくともその外周面に前記非晶質硬質
炭素膜が形成されている。In the invention according to claim 7, claims 1 to 6
In the invention described in any one of the above, the amorphous hard carbon film is formed on an outer surface of the piston at least on an outer peripheral surface thereof.
【００１７】この発明によれば、請求項１〜６のうちい
ずれか一項に記載の発明の作用に加え、少なくともピス
トンの外周面に形成された非晶質硬質炭素膜により、そ
の外周面は高い摺動特性を有する。よってこの外周面に
より、ピストンと、そのピストンを収容するハウジング
（シリンダ）との間で摩耗や焼付け等が起こり難くな
り、ピストン、ハウジング等の信頼性が向上する。According to the present invention, in addition to the function of any one of the first to sixth aspects of the present invention, at least the outer peripheral surface of the piston is formed by the amorphous hard carbon film formed on the outer peripheral surface of the piston. Has high sliding characteristics. Therefore, the outer peripheral surface makes it difficult for the piston and the housing (cylinder) accommodating the piston to wear or seize, thereby improving the reliability of the piston, the housing, and the like.
【００１８】[0018]
【発明の実施の形態】以下、本発明を可変容量型の斜板
式圧縮機に用いられる斜板の皮膜形成方法に具体化した
一実施形態を図１〜図６に従って説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention embodied in a swash plate film forming method used in a variable capacity swash plate compressor will be described below with reference to FIGS.
【００１９】図１に示すように、斜板式圧縮機１１は、
シリンダブロック１２と、その前端に接合されたフロン
トハウジング１３と、シリンダブロック１２の後端に弁
形成体１４を介して接合されたリヤハウジング１５とを
備え、これら部材１１〜１５は複数の通しボルト（図示
省略）により相互に接合固定されて圧縮機のハウジング
Ｈを構成している。As shown in FIG. 1, the swash plate type compressor 11 comprises:
The cylinder block 12 includes a front housing 13 joined to a front end thereof, and a rear housing 15 joined to a rear end of the cylinder block 12 via a valve body 14. These members 11 to 15 are provided with a plurality of through bolts. (Not shown) are joined and fixed to each other to form a housing H of the compressor.
【００２０】ハウジングＨ内には、クランク室１６、吸
入室１７および吐出室１８が区画形成されている。シリ
ンダブロック１２には複数のシリンダボア（一つのみ図
示）１９が形成され、各シリンダボア１９には片頭型の
ピストン２０が往復動可能に収容されている。吸入室１
７と吐出室１８は、弁形成体１４の各種フラッパ弁を介
して各シリンダボア１９と選択的に連通されている。In the housing H, a crank chamber 16, a suction chamber 17, and a discharge chamber 18 are defined. A plurality of cylinder bores (only one is shown) 19 are formed in the cylinder block 12, and a single-headed piston 20 is housed in each cylinder bore 19 so as to be able to reciprocate. Inhalation chamber 1
The discharge chamber 7 and the discharge chamber 18 are selectively communicated with the respective cylinder bores 19 via various flapper valves of the valve body 14.
【００２１】ハウジングＨには駆動軸２１が回転可能に
貫設されている。駆動軸２１には、斜板２２がクランク
室１６に収容された状態で支持されている。斜板２２
は、中心側のランド部２３と、そのランド部２３の外周
に肉厚が薄く形成された外周部２４とを有している。こ
の斜板２２は、ヒンジ機構２５およびラグプレート２６
を介して駆動軸２１に作動連結され、駆動軸２１と同期
回転可能かつ駆動軸２１の軸線方向への摺動を伴いなが
ら駆動軸２１に対し傾動可能となっている。A drive shaft 21 is rotatably provided through the housing H. A swash plate 22 is supported by the drive shaft 21 in a state housed in the crank chamber 16. Swash plate 22
Has a land portion 23 on the center side and an outer peripheral portion 24 formed on the outer periphery of the land portion 23 with a small thickness. The swash plate 22 includes a hinge mechanism 25 and a lug plate 26.
The drive shaft 21 is operatively connected to the drive shaft 21 so as to be rotatable in synchronization with the drive shaft 21 and to be tiltable with respect to the drive shaft 21 while sliding in the axial direction of the drive shaft 21.
【００２２】そして、斜板２２の外周部２４が前後一対
のシュー２７，２８を介して各ピストン２０の端部に摺
動自在に係留されることで、全てのピストン２０が斜板
に作動連結されている。駆動軸２１とともに所定角度に
傾斜した斜板２２が回転すると、各ピストン２０が斜板
２２の傾角に応じたストロークで往復動され、吸入室１
７から吸入した冷媒ガスを圧縮して吐出室１８へ吐出す
るサイクルが順次繰り返される。The outer peripheral portion 24 of the swash plate 22 is slidably anchored to the end of each piston 20 via a pair of front and rear shoes 27 and 28, so that all the pistons 20 are operatively connected to the swash plate. Have been. When the swash plate 22 inclined at a predetermined angle rotates together with the drive shaft 21, each piston 20 is reciprocated at a stroke corresponding to the inclination angle of the swash plate 22, and the suction chamber 1
The cycle of compressing the refrigerant gas sucked in from 7 and discharging it to the discharge chamber 18 is sequentially repeated.
【００２３】斜板２２の傾角は、斜板回転時の遠心力に
基づく回転運動のモーメント、傾角減少バネ２９の付勢
作用に基づくバネ力によるモーメント、ピストン２０の
往復慣性力によるモーメント、ガス圧によるモーメント
等の各種モーメントの相互バランスに基づき決定され
る。ここでガス圧によるモーメントとは、シリンダボア
１９の内圧と、ピストン２０の背圧にあたるクランク室
１６の内圧とに基づいて決まるモーメントであり、クラ
ンク圧に応じて傾角減少方向にも増大方向にも作用す
る。The inclination angle of the swash plate 22 includes the moment of the rotational movement based on the centrifugal force when the swash plate rotates, the moment due to the spring force due to the urging action of the inclination reduction spring 29, the moment due to the reciprocating inertial force of the piston 20, and the gas pressure. Is determined based on the mutual balance of various moments such as the moment by Here, the moment due to the gas pressure is a moment determined based on the internal pressure of the cylinder bore 19 and the internal pressure of the crank chamber 16 corresponding to the back pressure of the piston 20, and acts on the inclination decreasing direction and the increasing direction in accordance with the crank pressure. I do.
【００２４】可変容量型の斜板式圧縮機１１はリヤハウ
ジング１５に制御弁３０を備え、この制御弁３０はクラ
ンク室１６と吐出室１８とを連通する圧力供給経路３１
上に介在している。また、クランク室１６と吸入室１７
は放圧通路（絞り通路）３２によって連通されている。
本例のような可変容量型の斜板式圧縮機１１では、制御
弁３０の開度調節によってクランク圧を調節することに
よりガス圧によるモーメントを適宜変更する。そして、
クランク圧を高めに誘導すれば斜板２２の傾角が小さく
なりピストン２０のストロークが小さくなって吐出容量
が減少し、クランク圧を低めに誘導すれば斜板２２の傾
角が大きくなりピストン２０のストロークが大きくなっ
て吐出容量が増大する。The variable displacement type swash plate type compressor 11 includes a control valve 30 in the rear housing 15, and the control valve 30 communicates with the crank chamber 16 and the discharge chamber 18 through a pressure supply path 31.
Intervening above. Also, the crank chamber 16 and the suction chamber 17
Are communicated by a pressure release passage (throttle passage) 32.
In the variable displacement type swash plate type compressor 11 as in this example, the moment due to the gas pressure is appropriately changed by adjusting the crank pressure by adjusting the opening of the control valve 30. And
If the crank pressure is increased, the inclination angle of the swash plate 22 becomes smaller, the stroke of the piston 20 becomes smaller, and the discharge capacity decreases. If the crank pressure is reduced, the inclination angle of the swash plate 22 becomes larger, and the stroke of the piston 20 becomes larger. And the discharge capacity increases.
【００２５】次に、皮膜を形成した斜板２２、シュー２
７，２８、ピストン２０の具体例を図２〜図６に従って
説明する。図２に示すように、各シュー２７，２８は平
面部３５，３６と球面部３７，３８を有し、平面部３
５，３６が斜板２２のフロント面３９およびリヤ面４０
にそれぞれ当接し、球面部３７，３８がピストン２０の
シュー座４１に当接している。斜板２２の基材（母材）
４２には鉄系材料やアルミニウム系材料等が使用されて
いる。またシュー２７，２８には、その機械的強度等を
配慮して同じく鉄系材料（例えば軸受鋼）が使用されて
いる。Next, the swash plate 22 having the film formed thereon, the shoe 2
7, 28 and specific examples of the piston 20 will be described with reference to FIGS. As shown in FIG. 2, each of the shoes 27 and 28 has flat portions 35 and 36 and spherical portions 37 and 38, and the flat portions 3 and
5, 36 are the front surface 39 and the rear surface 40 of the swash plate 22.
, And the spherical portions 37 and 38 are in contact with the shoe seat 41 of the piston 20. Base material of swash plate 22 (base material)
For 42, an iron-based material, an aluminum-based material, or the like is used. The shoes 27 and 28 are also made of an iron-based material (for example, bearing steel) in consideration of the mechanical strength and the like.
【００２６】斜板２２の外周部２４には、フロント面３
９とリヤ面４０の両面に周方向全域に亘って非晶質硬質
炭素膜４３，４４が形成されている。この非晶質硬質炭
素膜４３，４４は、ＣＶＤ法、ＰＶＤ法等によって、外
周部２４の加工面４５，４６上に形成される。非晶質硬
質炭素膜４３，４４は一般に合成擬似ダイヤモンド薄
膜、ダイヤモンドライクカーボン（ＤＬＣ）、ｉ−カー
ボン等と呼称され、本例ではＤＬＣ膜と称することにす
る。斜板２２はこのＤＬＣ膜４３，４４の表面でシュー
２７，２８の平面部３５，３６とそれぞれ当接し、ＤＬ
Ｃ膜４３，４４は斜板２２のシュー２７，２８との摺動
面となる。An outer peripheral portion 24 of the swash plate 22 has a front surface 3
Amorphous hard carbon films 43 and 44 are formed on both surfaces of the rear surface 9 and the rear surface 40 in the entire circumferential direction. The amorphous hard carbon films 43 and 44 are formed on the processing surfaces 45 and 46 of the outer peripheral portion 24 by a CVD method, a PVD method, or the like. The amorphous hard carbon films 43 and 44 are generally called a synthetic pseudo diamond thin film, diamond-like carbon (DLC), i-carbon, or the like. In this example, they are called DLC films. The swash plate 22 comes into contact with the flat portions 35, 36 of the shoes 27, 28 on the surfaces of the DLC films 43, 44, respectively.
The C films 43 and 44 serve as sliding surfaces of the swash plate 22 with the shoes 27 and 28.
【００２７】ＤＬＣ膜４３，４４は硬度等の物性的には
ダイヤモンドに近似している特徴を有しており、高硬度
でしかも摩擦係数が低いという特性がある。よってこの
ＤＬＣ膜４３，４４からなる斜板２２の表面は、耐摩耗
性や耐焼付性に優れた高い摺動特性を有することになる
ため、斜板２２とシュー２７，２８との間の摺動部４７
に摩耗や焼付けが起こり難くなり、斜板２２やシュー２
７，２８、ひいては圧縮機１１の信頼性が向上する。し
かもＤＬＣ膜４３，４４は、膜厚や表面粗度等の形成精
度（加工精度）が良いため、必要とする膜厚や表面粗度
を確保するための研磨等の仕上処理が不要になる。よっ
て皮膜形成作業が簡素になり、その分コストも安価にな
る。The DLC films 43 and 44 are characterized in that physical properties such as hardness are similar to diamond, and have characteristics of high hardness and low friction coefficient. Therefore, since the surface of the swash plate 22 composed of the DLC films 43 and 44 has high sliding characteristics excellent in wear resistance and seizure resistance, the sliding between the swash plate 22 and the shoes 27 and 28 is performed. Moving part 47
The swash plate 22 and the shoe 2
7, 28, and thus the reliability of the compressor 11 is improved. Moreover, since the DLC films 43 and 44 have good formation accuracy (processing accuracy) such as film thickness and surface roughness, finishing treatment such as polishing for securing required film thickness and surface roughness is not required. Therefore, the film forming operation is simplified, and the cost is correspondingly reduced.
【００２８】図３は、斜板のリヤ面のみに皮膜を形成し
た例である。ところで斜板式圧縮機１１では、冷媒ガス
吸入時にピストン２０を強制牽引する際の反力が主とし
てフロント側のシュー２７を介して斜板２２のフロント
面３９に作用する。一方、冷媒ガス吐出時にその冷媒ガ
スをピストン２０で圧縮する際の圧縮反力は、主として
リヤ側のシュー２８を介して斜板２２のリヤ面４０に作
用する。どちらも斜板２２とシュー２７，２８の間の摩
耗や焼付けの原因となり得る要素であるが、強制牽引の
反力は圧縮反力の値に比べはるかに小さいという実状が
あるため、フロント側の摺動特性をさほど高くしなくて
も足りる場合がある。FIG. 3 shows an example in which a film is formed only on the rear surface of the swash plate. Incidentally, in the swash plate type compressor 11, a reaction force generated when the piston 20 is forcibly pulled at the time of sucking the refrigerant gas mainly acts on the front surface 39 of the swash plate 22 via the front shoe 27. On the other hand, a compression reaction force generated when the refrigerant gas is compressed by the piston 20 during discharge of the refrigerant gas mainly acts on the rear surface 40 of the swash plate 22 via the rear shoe 28. Both are factors that can cause wear and seizure between the swash plate 22 and the shoes 27 and 28, but since the reaction force of forced traction is much smaller than the value of the compression reaction force, the front side has In some cases, it is not necessary to increase the sliding characteristics so much.
【００２９】また、例えば斜板２２がアルミニウム系材
料でシュー２７，２８が鉄系材料であるように互いに異
質の材料であれば、いわゆる「ともがね現象」による焼
付けは生じ難い。従って、斜板２２とシュー２７，２８
が異なる材料であって、強制牽引の際の反力は相対的に
小さいという実状を考慮に入れれば、フロント側の摺動
特性を特別に高くする必要がない場合もある。If the swash plate 22 is made of a different material such as an aluminum-based material and the shoes 27 and 28 are made of an iron-based material, baking due to the so-called "tongue phenomenon" is unlikely to occur. Therefore, the swash plate 22 and the shoes 27, 28
Is a different material, and taking into account the fact that the reaction force at the time of forced traction is relatively small, it may not be necessary to particularly enhance the sliding characteristics on the front side.
【００３０】よってこの例では、斜板２２のリヤ面４０
のみにＤＬＣ膜４４が形成されている。この構成であれ
ばフロント側の皮膜形成を省略するため、皮膜形成時の
作業の手間や製造コストが減る。また、高い摺動特性を
有する必要のあるリヤ面４０側にはＤＬＣ膜４４が形成
されているため、摩耗や焼付けの発生確率が急激に増加
せず、斜板２２やシュー２７，２８、ひいては圧縮機１
１の高い信頼性が確保される。Therefore, in this example, the rear surface 40 of the swash plate 22
Only the DLC film 44 is formed. With this configuration, the formation of the film on the front side is omitted, so that the labor and manufacturing cost for forming the film are reduced. Further, since the DLC film 44 is formed on the rear surface 40 side which needs to have high sliding characteristics, the probability of occurrence of abrasion and seizure does not increase rapidly, and the swash plate 22, the shoes 27 and 28, and Compressor 1
1 high reliability is ensured.
【００３１】図４は、一対のシューの両平面部に皮膜を
形成した例である。この例ではシュー２７，２８の平面
部３５，３６の全域に亘って、ＤＬＣ膜４８，４９が形
成されている。よってシュー２７，２８の平面部３５，
３６は、ＤＬＣ膜４８，４９の表面で斜板２２とそれぞ
れ当接し、このＤＬＣ膜４８，４９がシュー２７，２８
の斜板２２との摺動面となる。FIG. 4 shows an example in which a film is formed on both flat portions of a pair of shoes. In this example, DLC films 48 and 49 are formed over the entire area of the flat portions 35 and 36 of the shoes 27 and 28. Therefore, the flat portions 35 of the shoes 27 and 28,
The surface 36 of the DLC films 48 and 49 abuts on the swash plate 22, respectively, and the DLC films 48 and 49
Slide surface with the swash plate 22.
【００３２】この例でも、皮膜形成作業が簡素になる
上、斜板２２とシュー２７，２８との間の摺動部４７の
摺動特性が向上することで、斜板２２やシュー２７，２
８、ひいては圧縮機１１の信頼性が向上する。また、斜
板２２の加工面４５，４６（図１または図２参照）全域
にＤＬＣ膜４３，４４を形成する場合に比べ、必要な皮
膜面積が小さくて済み、材料コストが一層安価になる。
なお、圧縮反力を受けるリヤ側のシュー２８の平面部３
６のみにＤＬＣ膜４９を形成し、フロント側のＤＬＣ膜
４８を省略することもできる。Also in this example, the swash plate 22 and the shoes 27 and 2 can be simplified by improving the sliding characteristics of the sliding portion 47 between the swash plate 22 and the shoes 27 and 28 in addition to simplifying the film forming operation.
8, and thus the reliability of the compressor 11 is improved. Further, compared with the case where the DLC films 43, 44 are formed on the entire processing surfaces 45, 46 (see FIG. 1 or FIG. 2) of the swash plate 22, the required film area is smaller and the material cost is further reduced.
The flat portion 3 of the rear shoe 28 which receives the compression reaction force
Alternatively, the DLC film 49 may be formed only on the substrate 6, and the front DLC film 48 may be omitted.
【００３３】図５は、シューの表面全体に皮膜を形成し
た例である。この例ではシュー２７，２８の表面全体に
ＤＬＣ膜５０，５１が形成されている。よってシュー２
７，２８の表面全体のうち、シュー座４１と摺動する球
面部３７，３８に形成されたＤＬＣ膜５０，５１の表面
がシュー２７，２８のピストン２０との摺動面となり、
斜板２２と摺動する平面部３５，３６に形成されたＤＬ
Ｃ膜５０，５１の表面がシュー２７，２８の斜板２２と
の摺動面となる。FIG. 5 shows an example in which a film is formed on the entire surface of the shoe. In this example, DLC films 50 and 51 are formed on the entire surfaces of the shoes 27 and 28. So shoe 2
Of the entire surfaces of the surfaces 7 and 28, the surfaces of the DLC films 50 and 51 formed on the spherical portions 37 and 38 that slide on the shoe seat 41 serve as sliding surfaces of the shoes 27 and 28 with the piston 20,
DL formed on the flat portions 35 and 36 sliding with the swash plate 22
The surfaces of the C films 50 and 51 serve as sliding surfaces of the shoes 27 and 28 with the swash plate 22.
【００３４】この例ではピストン２０のシュー座４１の
表面処理（例えばＳｎメッキ処理）が廃止可能となり、
しかも、斜板２２とシュー２７，２８の間の摺動部４７
だけでなく、シュー２７，２８とピストン２０の間の摺
動部５２の摩耗や焼付けも起こり難くなり、斜板２２や
シュー２７，２８だけでなくピストン２０の信頼性も向
上する。なお、シュー２７，２８の球面部３７，３８の
みにＤＬＣ膜５０，５１を形成することもできる。In this example, the surface treatment (for example, Sn plating) of the shoe seat 41 of the piston 20 can be abolished.
Moreover, the sliding portion 47 between the swash plate 22 and the shoes 27, 28
In addition, wear and seizure of the sliding portion 52 between the shoes 27 and 28 and the piston 20 hardly occur, and the reliability of the piston 20 as well as the swash plate 22 and the shoes 27 and 28 is improved. The DLC films 50 and 51 may be formed only on the spherical portions 37 and 38 of the shoes 27 and 28.
【００３５】図６は、ピストンに皮膜を形成した例であ
る。この例ではピストン２０の外面全体にＤＬＣ膜５４
が形成されている。よってピストン２０の外面全体のう
ち、シュー２７，２８と摺動するシュー座４１に形成さ
れたＤＬＣ膜５４の表面がピストン２０のシュー２７，
２８との摺動面となり、シリンダブロック１２と摺動す
るピストン本体５５の外周面５６に形成されたＤＬＣ膜
５４の表面がピストン２０のシリンダブロック１２との
摺動面となる。FIG. 6 shows an example in which a film is formed on a piston. In this example, the DLC film 54 is formed on the entire outer surface of the piston 20.
Are formed. Accordingly, of the entire outer surface of the piston 20, the surface of the DLC film 54 formed on the shoe seat 41 that slides on the shoes 27 and 28
The surface of the DLC film 54 formed on the outer peripheral surface 56 of the piston body 55 that slides on the cylinder block 12 serves as a sliding surface of the piston 20 with the cylinder block 12.
【００３６】ところで従来はピストン２０の摺動特性確
保のために、ピストン２０の外周面５６に主にＰＴＦＥ
（ポリテトラフルオロエチレン）からなるコーティング
層を形成し、シュー座４１の表面にＳｎメッキ層を形成
していた。よって従来はコーティング層形成時に焼成処
理や研磨処理等の加工が必要であったが、皮膜にＤＬＣ
膜５３を用いることによってそのような加工処理が省略
され、しかもシュー座４１に施していたＳｎメッキ処理
も廃止される。それに加え、シュー２７，２８とピスト
ン２０との間の摺動部５２だけでなく、ピストン２０と
シリンダブロック１２との間の摺動部５７の摺動特性も
向上し、シュー２７，２８、ピストン２０およびシリン
ダブロック１２の信頼性も向上する。なお、ＤＬＣ膜５
４はピストン２０のシュー座４１のみに形成することも
できるし、外周面５６のみに形成することもできる。Conventionally, in order to secure the sliding characteristics of the piston 20, the outer peripheral surface 56 of the piston 20 is mainly made of PTFE.
A coating layer made of (polytetrafluoroethylene) was formed, and an Sn plating layer was formed on the surface of the shoe seat 41. Conventionally, processing such as baking or polishing was required when forming the coating layer.
By using the film 53, such a processing is omitted, and the Sn plating that has been performed on the shoe seat 41 is also abolished. In addition, the sliding characteristics of not only the sliding portion 52 between the shoes 27 and 28 and the piston 20 but also the sliding portion 57 between the piston 20 and the cylinder block 12 are improved. The reliability of the cylinder 20 and the cylinder block 12 is also improved. The DLC film 5
4 can be formed only on the shoe seat 41 of the piston 20, or can be formed only on the outer peripheral surface 56.
【００３７】従って、この実施形態では以下のような効
果を得ることができる。 （１）斜板２２、シュー２７，２８、ピストン２０の各
摺動面をＤＬＣ膜４３，４４，４８〜５１，５４により
形成したので、各摺動部４７，５２，５７において耐摩
耗性や耐焼付性に優れた高い摺動特性を確保できる。よ
って、斜板２２、シュー２７，２８、ピストン２０、シ
リンダブロック１２等には摩耗や焼付けが起こり難くな
り、各部品１２，２０，２２、２７，２８ひいては圧縮
機１１の信頼性が向上する。Therefore, in this embodiment, the following effects can be obtained. (1) Since the respective sliding surfaces of the swash plate 22, the shoes 27, 28, and the piston 20 are formed by the DLC films 43, 44, 48 to 51, 54, the abrasion resistance and the wear of the respective sliding portions 47, 52, 57 are improved. High sliding characteristics with excellent seizure resistance can be secured. Therefore, the swash plate 22, the shoes 27 and 28, the piston 20, the cylinder block 12, and the like are less likely to be worn or seized, and the reliability of the components 12, 20, 22, 27, 28, and the compressor 11 is improved.
【００３８】（２）ＤＬＣ膜４３，４４，４８〜５１，
５４は膜厚や表面粗さ等の形成精度が良いため、一回の
表面処理のみで必要とする膜厚や表面粗度で皮膜を形成
できる。よって各摺動面にＤＬＣ膜を採用すれば、研磨
処理や仕上処理等の特別な加工処理を施す必要がなくな
り、一回の作業によって皮膜形成を行うことができる。
しかもその研磨等の加工処理が省略できることによっ
て、その分のコストも低くできる。また例えば溶射法に
よって皮膜形成を実行するときと比べて、例えば騒音の
ない良好な環境下で作業を行うことができる。(2) DLC films 43, 44, 48 to 51,
Since the film 54 has good formation accuracy such as film thickness and surface roughness, a film can be formed with the required film thickness and surface roughness by only one surface treatment. Therefore, if a DLC film is used for each sliding surface, it is not necessary to perform a special processing such as a polishing process or a finishing process, and the film can be formed by one operation.
Moreover, since the processing such as polishing can be omitted, the cost can be reduced accordingly. Further, for example, the work can be performed in a favorable environment without noise, for example, as compared with the case where the coating is formed by a thermal spraying method.
【００３９】（３）斜板２２のフロント面３９側には相
対的に値の小さい強制牽引の際の反力が働くため、例え
ば斜板２２がアルミニウム系材料であればフロント面３
９にＤＬＣ膜を形成しなくてもさほど問題はない。よっ
て大きな圧縮反力が加わる斜板２２のリヤ面４０側のみ
にＤＬＣ膜４４を設けた場合（図３）には、フロント面
３９側のＤＬＣ膜を省略でき、このようにＤＬＣ膜を省
略化しても耐摩耗性や耐焼付性は確保できる。(3) Since the reaction force at the time of forced traction having a relatively small value acts on the front surface 39 side of the swash plate 22, if the swash plate 22 is made of an aluminum-based material, for example, the front surface 3
Even if the DLC film is not formed in No. 9, there is no problem. Therefore, when the DLC film 44 is provided only on the rear surface 40 side of the swash plate 22 to which a large compression reaction force is applied (FIG. 3), the DLC film on the front surface 39 side can be omitted, and thus the DLC film can be omitted. However, wear resistance and seizure resistance can be secured.
【００４０】（４）シュー２７，２８の表面全体にＤＬ
Ｃ膜５０，５１を形成した場合（図４）には、この球面
部３７，３８部分のＤＬＣ膜がピストン２０との摺動面
となり、ピストン２０のシュー座４１に従来実施してい
たＳｎメッキ処理を廃止できる。(4) The entire surface of the shoes 27 and 28 is DL
When the C films 50 and 51 are formed (FIG. 4), the DLC film on the spherical portions 37 and 38 serves as a sliding surface with the piston 20, and the Sn seat 41 of the piston 20 which has been conventionally formed is formed on the shoe seat 41 of the piston 20. Processing can be abolished.
【００４１】（５）ピストン２０の外面全体にＤＬＣ膜
５４を形成した場合（図５）には、主にＰＴＦＥからな
るコーティング層を形成するときに必要であった焼成処
理や研磨処理等の加工処理が不要になり、皮膜形成作業
を簡素にできる。またこの場合も、シュー座４１に実施
していたＳｎメッキ処理を廃止できる。(5) When the DLC film 54 is formed on the entire outer surface of the piston 20 (FIG. 5), a process such as a baking process or a polishing process, which is necessary when forming a coating layer mainly composed of PTFE, is performed. No treatment is required, and the film forming operation can be simplified. Also in this case, the Sn plating process performed on the shoe seat 41 can be eliminated.
【００４２】なお、実施形態は前記に限定されるもので
はなく、例えば、次のように変更してもよい。 ○ 斜板式圧縮機は片頭型のピストン２０を備えた可変
容量型に限定されない。例えば図７に示すように、両頭
型のピストン６１を備えた固定容量型の斜板式圧縮機に
おいて、その斜板６２に両面にＤＬＣ膜４３，４４を形
成してもよい。この場合も、斜板６２とシュー６３の摺
動特性が向上し、部品の信頼性が向上する。The embodiment is not limited to the above, and may be modified as follows, for example. The swash plate compressor is not limited to the variable displacement type having the single-headed piston 20. For example, as shown in FIG. 7, in a fixed displacement type swash plate type compressor provided with a double-headed piston 61, DLC films 43 and 44 may be formed on both surfaces of the swash plate 62. Also in this case, the sliding characteristics between the swash plate 62 and the shoe 63 are improved, and the reliability of the parts is improved.
【００４３】○ ＤＬＣ膜の形成箇所は、前記実施形態
で説明した具体例を適宜必要に合わせて自由に組み合わ
せることもできる。その例を以下に列挙する。 (1)・図２に示す斜板２２の両面と、図６に示すピスト
ン２０のシュー座４１ ・図３に示す斜板２２のリヤ面４０と、図６に示すピス
トン２０のシュー座４１ ・図４に示すシュー２７，２８の平面部３５，３６と、
図６に示すピストン２０のシュー座４１ ・図２に示す斜板２２の両面と図５に示すシュー２７，
２８の球面部３７，３８ ・図３に示す斜板２２のリヤ面４０と、図５に示すシュ
ー２７，２８の球面部３７，３８ (2)・(1)に記載の皮膜形成箇所と、図６に示すピストン
２０の外周面５６ ・図２に示す斜板２２の両面と、図６に示すピストン２
０の外面全体 ・図３に示す斜板２２のリヤ面４０と、図６に示すピス
トン２０の外面全体 ・図４に示すシュー２７，２８の平面部３５，３６と、
図６に示すピストン２０の外面全体 ・図５に示すシュー２７，２８の表面全体と、図６に示
すピストン２０の外周面５６ よって(1)の場合には摺動部４７，５２の摺動特性が向
上し、各摺動部に個々に皮膜を形成したときよりも摺動
特性に優れた圧縮機１１を提供できる。また(2)の場合
には、摺動部４７，５２だけでなく摺動部５７の摺動特
性も同時に向上し、一層優れた摺動特性を有する圧縮機
１１を提供できる。The locations where the DLC film is formed can be freely combined with the specific examples described in the above embodiments as needed. Examples are listed below. (1) Both surfaces of the swash plate 22 shown in FIG. 2, the shoe seat 41 of the piston 20 shown in FIG. 6, the rear surface 40 of the swash plate 22 shown in FIG. 3, and the shoe seat 41 of the piston 20 shown in FIG. Plane portions 35, 36 of the shoes 27, 28 shown in FIG.
Shoe seat 41 of piston 20 shown in FIG. 6 · Both sides of swash plate 22 shown in FIG.
The spherical surface portions 37, 38 of the rear surface 40 of the swash plate 22 shown in FIG. 3 and the spherical surface portions 37, 38 of the shoes 27, 28 shown in FIG. Outer peripheral surface 56 of piston 20 shown in FIG. 6 Both surfaces of swash plate 22 shown in FIG. 2 and piston 2 shown in FIG.
0, the entire rear surface 40 of the swash plate 22 shown in FIG. 3, and the entire outer surface of the piston 20 shown in FIG. 6, and the flat portions 35, 36 of the shoes 27, 28 shown in FIG.
The entire outer surface of the piston 20 shown in FIG. 6. The entire surface of the shoes 27 and 28 shown in FIG. 5 and the outer peripheral surface 56 of the piston 20 shown in FIG. It is possible to provide the compressor 11 with improved characteristics and more excellent sliding characteristics than when a film is individually formed on each sliding portion. In the case (2), not only the sliding portions 47 and 52 but also the sliding characteristics of the sliding portion 57 are improved at the same time, and the compressor 11 having more excellent sliding characteristics can be provided.
【００４４】○ ＤＬＣ膜は、斜板２２、シュー２７，
２８、ピストン２０の各部品間の摺動部４７，５２，５
７に設けられることに限定されない。例えば駆動軸２１
が挿通される斜板２２の孔の内周面、駆動軸２１の斜板
２２との摺動面、駆動軸２１を回転可能に支持するベア
リング、クランク室と外部を遮断するリップシール、ヒ
ンジ機構２５等に設けてもよい。即ち、圧縮機を構成す
る部品のうち、圧縮機駆動時に摺動する摺動部であれ
ば、どこにでもＤＬＣ膜を形成することができる。The DLC film is composed of a swash plate 22, a shoe 27,
28, sliding parts 47, 52, 5 between parts of the piston 20
7 is not limited. For example, the drive shaft 21
, A sliding surface of the drive shaft 21 with the swash plate 22, a bearing for rotatably supporting the drive shaft 21, a lip seal for shutting off the crank chamber from the outside, and a hinge mechanism. 25 or the like. In other words, the DLC film can be formed anywhere on the sliding portion that slides when the compressor is driven, among the components constituting the compressor.
【００４５】○ 各摺動部４７，５２、５７のうち片側
の摺動面のみにＤＬＣ膜を形成したが、例えば斜板２２
の両面とシューの平面部３５，３６とにＤＬＣ膜４３，
４４，４８，４９を形成するように摺動部において両側
にＤＬＣ膜を形成してもよい。この場合、部品の摩耗や
焼付けは一層生じ難くなる。The DLC film is formed only on one sliding surface of each of the sliding portions 47, 52 and 57.
DLC films 43, on both sides of the
DLC films may be formed on both sides of the sliding portion so as to form 44, 48 and 49. In this case, abrasion and seizure of parts are more unlikely to occur.
【００４６】○ ＤＬＣ膜４３，４４，４８〜５１，５
４は摺動面全域に形成したが、その摺動面のうち一部の
みにＤＬＣ膜を形成することもできる。要するに、高い
摺動特性が確保されれば、摺動面全域にＤＬＣ膜はなく
てもよい。The DLC films 43, 44, 48 to 51, 5
Although 4 is formed over the entire sliding surface, a DLC film may be formed on only a part of the sliding surface. In short, as long as high sliding characteristics are secured, the DLC film may not be provided on the entire sliding surface.
【００４７】○ ＤＬＣ膜は各部品２０，２２，２７，
２８の基材（母材）の表面に直接形成したが、例えば基
材とＤＬＣ膜との間に、溶射層やメッキ層等からなる中
間層を形成することもできる。この場合、溶射やメッキ
処理の作業を実施する必要があるため、ＤＬＣ膜のみ設
ける場合に比べて皮膜形成作業が多少面倒になるが、万
一、ＤＬＣ膜が摩耗や焼付けにより消耗した場合でも中
間層により摺動特性は確保される。よってＤＬＣ膜と中
間層の二層構造を採用すれば、より高い摺動特性を確保
できる。The DLC film is made of each of the components 20, 22, 27,
Although formed directly on the surface of the base material (base material) of No. 28, for example, an intermediate layer composed of a sprayed layer, a plating layer, or the like can be formed between the base material and the DLC film. In this case, it is necessary to carry out a thermal spraying or plating process, so that the film forming work is somewhat troublesome as compared with the case where only the DLC film is provided. The sliding characteristics are ensured by the layer. Therefore, if a two-layer structure of the DLC film and the intermediate layer is adopted, higher sliding characteristics can be secured.
【００４８】○ 斜板２２にＤＬＣ膜４３，４４を形成
するとき、外周部２４のフロント面３９およびリヤ面４
０全面にＤＬＣ膜を形成したが、シュー２７，２８と摺
動する部分にのみＤＬＣ膜を形成することもできる。When forming the DLC films 43 and 44 on the swash plate 22, the front surface 39 and the rear surface 4
Although the DLC film is formed on the entire surface, the DLC film may be formed only on a portion that slides on the shoes 27 and 28.
【００４９】○ ピストン２０の外面全体にＤＬＣ膜を
形成したが、ピストン２０の外周面５６とシュー座４１
にのみＤＬＣ膜を形成するようにピストン２０に部分的
に皮膜形成することもできる。Although the DLC film was formed on the entire outer surface of the piston 20, the outer peripheral surface 56 of the piston 20 and the shoe seat 41
It is also possible to partially form a film on the piston 20 so that the DLC film is formed only on the piston 20.
【００５０】前記実施形態及び別例から把握できる請求
項以外の技術的思想について、以下にその効果とともに
記載する。 （１）請求項１〜８において、前記斜板とシューとの摺
動部、及び前記シューとピストンとの摺動部には、前記
非晶質硬質炭素膜が形成されている。この場合、各摺動
部の摺動特性を同時に確保でき、摺動特性に優れた圧縮
機を提供できる。The technical ideas other than the claims which can be grasped from the embodiment and other examples will be described below together with their effects. (1) In Claims 1 to 8, the amorphous hard carbon film is formed on a sliding portion between the swash plate and the shoe and a sliding portion between the shoe and the piston. In this case, the sliding characteristics of each sliding portion can be secured at the same time, and a compressor having excellent sliding characteristics can be provided.
【００５１】（２）前記技術的思想（１）において、前
記ピストンの外周面には、前記非晶質硬質炭素膜が形成
されている。この場合、斜板とシュー、及びシューとピ
ストンの摺動部の摺動特性だけでなく、ピストンとハウ
ジングとの摺動特性も同時に向上でき、より摺動特性に
優れた圧縮機を提供できる。(2) In the technical idea (1), the amorphous hard carbon film is formed on an outer peripheral surface of the piston. In this case, not only the sliding characteristics of the sliding portion of the swash plate and the shoe and the sliding portion of the shoe and the piston, but also the sliding characteristics of the piston and the housing can be improved at the same time, and a compressor having more excellent sliding characteristics can be provided.
【００５２】（３）請求項２において、前記斜板とシュ
ーとの間の摺動部に、前記非晶質硬質炭素膜が形成され
ている。この場合、斜板とシューとの間の摺動特性を向
上でき、斜板とピストンの信頼性が向上する。(3) In claim 2, the amorphous hard carbon film is formed in a sliding portion between the swash plate and the shoe. In this case, the sliding characteristics between the swash plate and the shoe can be improved, and the reliability of the swash plate and the piston is improved.
【００５３】（４）請求項２において、前記シューとピ
ストンとの間の摺動部に、前記非晶質硬質炭素膜が形成
されている。この場合、シューとピストンとの間の摺動
特性を向上でき、シューとピストンの信頼性が向上す
る。(4) In claim 2, the amorphous hard carbon film is formed on a sliding portion between the shoe and the piston. In this case, the sliding characteristics between the shoe and the piston can be improved, and the reliability of the shoe and the piston can be improved.
【００５４】（５）請求項２において、前記ピストンと
圧縮機のハウジングを構成するシリンダブロックとの間
の摺動部に、前記非晶質硬質炭素膜が形成されている。
この場合、ピストンとシリンダブロックとの間の摺動特
性を向上でき、ピストンとシリンダブロックの信頼性が
向上する。(5) In claim 2, the amorphous hard carbon film is formed on a sliding portion between the piston and a cylinder block forming a housing of the compressor.
In this case, the sliding characteristics between the piston and the cylinder block can be improved, and the reliability of the piston and the cylinder block can be improved.
【００５５】（６）請求項２において、前記斜板とシュ
ーとの摺動部及び前記シューとピストンとの摺動部は当
該斜板を挟んでそれぞれ対に形成され、前記斜板を挟ん
だ両側の摺動部のうち、媒体圧縮時にピストンに作用す
る圧縮反力が加わる側の摺動部にのみ、前記非晶質硬質
炭素膜が形成されている。この場合、圧縮反力は媒体吸
入時にピストンに作用する強制牽引の際の反力に比べて
かなり大きいが、そのような大きな力が作用する側の摺
動部にのみ非晶質硬質炭素膜を形成しているので、効率
良く部品に摩耗や焼付けを発生し難くできる。(6) In claim 2, the sliding portion between the swash plate and the shoe and the sliding portion between the shoe and the piston are formed in pairs with the swash plate interposed therebetween, and the swash plate is interposed therebetween. The amorphous hard carbon film is formed only on the sliding portion of the sliding portions on both sides to which a compression reaction force acting on the piston is applied when the medium is compressed. In this case, the compression reaction force is much larger than the reaction force at the time of forced traction acting on the piston at the time of sucking the medium, but the amorphous hard carbon film is applied only to the sliding portion on which such a large force acts. Since it is formed, abrasion and seizure of parts can be efficiently prevented.
【００５６】（７）請求項１〜８において、前記摺動部
のうち片側の摺動面にのみ前記非晶質硬質炭素膜が形成
されている。この場合、摺動部の片側に非晶質硬質炭素
膜があれば特性上さほど問題はないため、効率良く摺動
部の摺動特性を向上できる。しかも、片面側の摺動面の
みに非晶質硬質炭素膜を形成しているため、摺動部の両
側摺動面に皮膜を形成する場合に比べて皮膜形成作業の
手間が省ける。(7) In Claims 1 to 8, the amorphous hard carbon film is formed only on one sliding surface of the sliding portion. In this case, if there is an amorphous hard carbon film on one side of the sliding portion, there is not much problem in characteristics, so that the sliding characteristics of the sliding portion can be efficiently improved. In addition, since the amorphous hard carbon film is formed only on one sliding surface on one side, the labor of forming the film can be reduced as compared with the case where a film is formed on both sliding surfaces of the sliding portion.
【００５７】[0057]
【発明の効果】以上詳述したように本発明によれば、圧
縮機を構成する構成部品同士が摺動する摺動部に非晶質
硬質炭素膜からなる皮膜を形成することによって、その
摺動部の摺動特性を向上でき、しかもその皮膜形成時の
作業を簡単にできる。As described above in detail, according to the present invention, the sliding portion is formed by forming a film made of an amorphous hard carbon film on the sliding portion where the components constituting the compressor slide. The sliding characteristics of the moving part can be improved, and the work of forming the film can be simplified.
【図１】 一実施形態における可変容量型斜板式圧縮機
の断面図。FIG. 1 is a sectional view of a variable displacement swash plate type compressor according to an embodiment.
【図２】 皮膜形成の具体例を示すシュー付近の拡大断
面図。FIG. 2 is an enlarged sectional view near a shoe showing a specific example of film formation.
【図３】 他の具体例を示すシュー付近の拡大断面図。FIG. 3 is an enlarged cross-sectional view near a shoe showing another specific example.
【図４】 他の具体例を示すシュー付近の拡大断面図。FIG. 4 is an enlarged sectional view near a shoe showing another specific example.
【図５】 他の具体例を示すシュー付近の拡大断面図。FIG. 5 is an enlarged sectional view near a shoe showing another specific example.
【図６】 他の具体例を示すピストン付近の拡大断面
図。FIG. 6 is an enlarged sectional view near a piston showing another specific example.
【図７】 別例における両頭型ピストンおよび斜板の断
面図。FIG. 7 is a sectional view of a double-headed piston and a swash plate in another example.
【符号の説明】 １１…斜板式圧縮機、２０…ピストン、２１…構成部品
としての駆動軸、２２…斜板、２５…構成部品としての
ヒンジ機構、２７，２８…シュー、４３，４４，４８〜
５１，５４…非晶質硬質炭素膜としてのＤＬＣ膜、４
７，５２，５７…摺動部、５６…外周面。[Description of References] 11 swash plate compressor, 20 piston, 21 drive shaft as a component, 22 swash plate, 25 hinge mechanism as a component, 27, 28 shoes, 43, 44, 48 ~
51, 54: DLC film as amorphous hard carbon film, 4
7, 52, 57: sliding portion, 56: outer peripheral surface.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 杉岡 隆弘 愛知県刈谷市豊田町２丁目１番地 株式会 社豊田自動織機製作所内 Ｆターム(参考） 3H076 AA06 BB26 CC20 CC33 CC34 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takahiro Sugioka 2-1-1 Toyota-cho, Kariya-shi, Aichi F-term in Toyota Industries Corporation (reference) 3H076 AA06 BB26 CC20 CC33 CC34
Claims (7)
板と、当該斜板に少なくとも１つ係留された一対のシュ
ーと、当該シューを介して前記斜板と連結されたピスト
ンとを備えた斜板式圧縮機であって、 圧縮機駆動時に当該圧縮機を構成する構成部品同士が摺
動する各摺動部のうち、少なくとも一箇所に非晶質硬質
炭素膜が形成されている斜板式圧縮機。1. A swash plate that is integrally rotatable with a drive shaft, a pair of shoes anchored to at least one swash plate, and a piston connected to the swash plate via the shoes. A swash plate type compressor comprising: a swash plate type compressor in which an amorphous hard carbon film is formed in at least one of sliding parts where components constituting the compressor slide when the compressor is driven. Plate compressor.
ュー及びピストンが摺動する摺動部のうち、少なくとも
一箇所に形成されている請求項１に記載の斜板式圧縮
機。2. The swash plate compressor according to claim 1, wherein the amorphous hard carbon film is formed at at least one of sliding portions on which the swash plate, the shoe, and the piston slide.
非晶質硬質炭素膜が形成されている請求項１又は２に記
載の斜板式圧縮機。3. The swash plate compressor according to claim 1, wherein the amorphous hard carbon film is formed on a sliding surface of the swash plate with a shoe.
前記非晶質硬質炭素膜が形成されている請求項１又は２
に記載の斜板式圧縮機。4. A sliding surface of the shoe with the swash plate includes:
3. The method according to claim 1, wherein the amorphous hard carbon film is formed.
A swash plate type compressor according to item 1.
は、前記非晶質硬質炭素膜が形成されている請求項１〜
４のうちいずれか一項に記載の斜板式圧縮機。5. The amorphous hard carbon film is formed on a sliding surface of the shoe with the piston.
5. The swash plate type compressor according to any one of 4.
記シューとの摺動面に前記非晶質硬質炭素膜が形成され
ている請求項１〜４のうちいずれか一項に記載の斜板式
圧縮機。6. The swash plate type compression according to claim 1, wherein the amorphous hard carbon film is formed on an outer surface of the piston at least on a sliding surface with the shoe. Machine.
の外周面に前記非晶質硬質炭素膜が形成されている請求
項１〜６のうちいずれか一項に記載の斜板式圧縮機。7. The swash plate compressor according to claim 1, wherein the amorphous hard carbon film is formed on an outer surface of the piston at least on an outer peripheral surface thereof.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000193456A JP2002005013A (en) | 2000-06-27 | 2000-06-27 | Swash plate type compressor |
| US09/885,778 US20010054352A1 (en) | 2000-06-27 | 2001-06-20 | Swash plate type compressor with improved sliding portions |
| EP01114766A EP1167761A3 (en) | 2000-06-27 | 2001-06-25 | Swash plate type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000193456A JP2002005013A (en) | 2000-06-27 | 2000-06-27 | Swash plate type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002005013A true JP2002005013A (en) | 2002-01-09 |
Family
ID=18692447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000193456A Pending JP2002005013A (en) | 2000-06-27 | 2000-06-27 | Swash plate type compressor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20010054352A1 (en) |
| EP (1) | EP1167761A3 (en) |
| JP (1) | JP2002005013A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007056720A (en) * | 2005-08-23 | 2007-03-08 | Sanden Corp | Swash plate compressor |
| JP2007056721A (en) * | 2005-08-23 | 2007-03-08 | Sanden Corp | Swash plate compressor |
| US7406912B2 (en) | 2005-04-13 | 2008-08-05 | Kabushiki Kaisha Toyota Jidoshokki | Swash plate compressor |
| EP1953384A2 (en) | 2007-01-30 | 2008-08-06 | Kabushiki Kaisha Toyota Jidoshokki | Sliding member |
| WO2008130029A1 (en) * | 2007-04-19 | 2008-10-30 | Sanden Corporation | Compressor |
| JP2008291328A (en) * | 2007-05-25 | 2008-12-04 | Toyota Industries Corp | Method for forming amorphous hard carbon film of sliding member of compressor, sliding member of compressor film-formed by the method, and manufacturing apparatus thereof |
| JP2009544886A (en) * | 2006-07-29 | 2009-12-17 | イグゼティック エムアーツェー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Device for connecting annular disc and piston |
| US8962143B2 (en) | 2008-10-27 | 2015-02-24 | Taiho Kogyo Co., Ltd. | PTFE-based sliding material, bearing, and method for producing PTFE-based sliding material |
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|---|---|---|---|---|
| JP3642077B2 (en) | 1995-01-27 | 2005-04-27 | 大豊工業株式会社 | Swash plate compressor swash plate |
| JP3039762B2 (en) * | 1995-03-07 | 2000-05-08 | 株式会社豊田自動織機製作所 | Reciprocating compressor |
| JP3568061B2 (en) * | 1995-05-17 | 2004-09-22 | 大豊工業株式会社 | Swash plate of swash plate compressor and combination of swash plate and shoe |
| JP4023872B2 (en) * | 1997-06-26 | 2007-12-19 | 大豊工業株式会社 | Swash plate compressor swash plate |
| JPH11193780A (en) | 1997-12-26 | 1999-07-21 | Toyota Autom Loom Works Ltd | Single-headed piston swash plate type compression machine and method for manufacturing swash plate |
| JP2000179453A (en) * | 1998-12-17 | 2000-06-27 | Taiho Kogyo Co Ltd | Swash plate of swash plate type compressor |
-
2000
- 2000-06-27 JP JP2000193456A patent/JP2002005013A/en active Pending
-
2001
- 2001-06-20 US US09/885,778 patent/US20010054352A1/en not_active Abandoned
- 2001-06-25 EP EP01114766A patent/EP1167761A3/en not_active Withdrawn
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| US7406912B2 (en) | 2005-04-13 | 2008-08-05 | Kabushiki Kaisha Toyota Jidoshokki | Swash plate compressor |
| CN100425833C (en) * | 2005-04-13 | 2008-10-15 | 株式会社丰田自动织机 | Swash plate compressor |
| JP2007056721A (en) * | 2005-08-23 | 2007-03-08 | Sanden Corp | Swash plate compressor |
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| JP2009544886A (en) * | 2006-07-29 | 2009-12-17 | イグゼティック エムアーツェー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Device for connecting annular disc and piston |
| KR101333858B1 (en) * | 2006-07-29 | 2013-11-27 | 익세틱 마크 게엠베하 | Device for coupling a piston to an annular disc |
| EP1953384A2 (en) | 2007-01-30 | 2008-08-06 | Kabushiki Kaisha Toyota Jidoshokki | Sliding member |
| US7721642B2 (en) | 2007-01-30 | 2010-05-25 | Kabushiki Kaisha Toyota Jidoshokki | Sliding member |
| JP2008185124A (en) * | 2007-01-30 | 2008-08-14 | Toyota Industries Corp | Sliding component |
| JP2008267251A (en) * | 2007-04-19 | 2008-11-06 | Sanden Corp | Compressor |
| WO2008130029A1 (en) * | 2007-04-19 | 2008-10-30 | Sanden Corporation | Compressor |
| JP2008291328A (en) * | 2007-05-25 | 2008-12-04 | Toyota Industries Corp | Method for forming amorphous hard carbon film of sliding member of compressor, sliding member of compressor film-formed by the method, and manufacturing apparatus thereof |
| US8962143B2 (en) | 2008-10-27 | 2015-02-24 | Taiho Kogyo Co., Ltd. | PTFE-based sliding material, bearing, and method for producing PTFE-based sliding material |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1167761A3 (en) | 2003-07-16 |
| US20010054352A1 (en) | 2001-12-27 |
| EP1167761A2 (en) | 2002-01-02 |
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