JPH11351245A - Thrust needle roller bearing for swash plate type compressor - Google Patents

Thrust needle roller bearing for swash plate type compressor

Info

Publication number
JPH11351245A
JPH11351245A JP10157977A JP15797798A JPH11351245A JP H11351245 A JPH11351245 A JP H11351245A JP 10157977 A JP10157977 A JP 10157977A JP 15797798 A JP15797798 A JP 15797798A JP H11351245 A JPH11351245 A JP H11351245A
Authority
JP
Japan
Prior art keywords
needle roller
swash plate
bearing
roller bearing
thrust
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
Application number
JP10157977A
Other languages
Japanese (ja)
Inventor
Yoshiyasu Nakano
賀泰 中野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP10157977A priority Critical patent/JPH11351245A/en
Publication of JPH11351245A publication Critical patent/JPH11351245A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/46Cages for rollers or needles
    • F16C33/54Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00Engines or pumps
    • F16C2360/42Pumps with cylinders or pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00Engines or pumps
    • F16C2360/44Centrifugal pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To form an oil film on a raceway surface so that an oil is easily supplied inside a thrust needle roller bearing for a swash plate type compressor, and to prevent the oil film on the raceway surface from running out. SOLUTION: A thrust needle roller bearing is provided with a first bearing ring 20a to be fitted to a stationary member, a second bearing ring 20b to be rotated together with a rotary member, a plurality of needle rollers 30 incorporated between the first bearing ring 20a and the second bearing ring 20b, and a holder 40 to hold a plurality of needle rollers 30 with equal intervals in the circumferential direction, the diameter (d) of the needle rollers 30 is set to be not less than 2 mm, the holder 40 is of guide type, and a gap of not less than 0.1 mm is formed between at least one of the bearing rings (20a or 20b) and the holder 40.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、スラスト針状こ
ろ軸受に関するもので、より詳しくは、自動車のエアコ
ンディショナー(カーエアコン)等に用いられる斜板式
コンプレッサの、主軸に作用するスラスト荷重を支持す
るためのスラスト針状ころ軸受に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thrust needle roller bearing, and more particularly, to a thrust load applied to a main shaft of a swash plate type compressor used for an air conditioner (car air conditioner) of an automobile. Needle thrust roller bearings for

【0002】[0002]

【従来の技術】カーエアコン用コンプレッサは、エンジ
ンより駆動力を受け、エバポレータで車室内の熱を奪っ
て気化した低温・低圧の冷媒ガスを吸入、圧縮して、高
温・高圧になったガスをコンデンサに送り出す役目をし
ている。斜板式コンプレッサの概略構成を例示した図5
〜図7のうち、図5は両斜板タイプ、図6は片斜板タイ
プ、図7は可変容量片斜板タイプをそれぞれ示してい
る。
2. Description of the Related Art A compressor for a car air conditioner receives a driving force from an engine, draws in heat in a cabin by an evaporator, sucks and compresses a low-temperature and low-pressure refrigerant gas, and compresses the high-temperature and high-pressure gas. It is responsible for sending out to the capacitor. FIG. 5 exemplifying a schematic configuration of a swash plate type compressor.
7 to FIG. 7, FIG. 5 shows a double swash plate type, FIG. 6 shows a single swash plate type, and FIG.

【0003】図5に示す斜板式コンプレッサ(1)は、
主軸に固定された斜板の回転により、斜板上を摺動する
シューを介してピストンが往復作動するようにしたもの
で、ハウジング(2)内に、斜板(3)を固定した主軸
(4)が、ラジアル軸受(5)を介して回転自在に支持
されている。ハウジング(2)には円周方向の等間隔位
置に複数のシリンダボア(6)が形成され、各ボア
(6)内に両頭形のピストン(7)が摺動自在に収容さ
れている。各ピストン(7)の中央部分に斜板(3)の
外周部を跨ぐようにして凹陥部(8)が形成され、この
凹陥部(8)の軸方向対向面に球面座を形成して球また
は半球状のシュー(9)を着座させてある。シュー
(9)が斜板(3)とピストン(7)との間に介在して
斜板(3)の回転運動をピストン(7)の往復運動に円
滑に変換させる働きをする。
The swash plate type compressor (1) shown in FIG.
The piston is reciprocated via a shoe that slides on the swash plate by rotation of the swash plate fixed to the main shaft, and a main shaft (3) having a swash plate (3) fixed in a housing (2). 4) is rotatably supported via a radial bearing (5). A plurality of cylinder bores (6) are formed in the housing (2) at equal intervals in the circumferential direction, and a double-headed piston (7) is slidably accommodated in each bore (6). A concave portion (8) is formed in a central portion of each piston (7) so as to straddle the outer peripheral portion of the swash plate (3), and a spherical seat is formed on an axially facing surface of the concave portion (8) to form a sphere. Alternatively, a hemispherical shoe (9) is seated. A shoe (9) is interposed between the swash plate (3) and the piston (7) to smoothly convert the rotational movement of the swash plate (3) into a reciprocating movement of the piston (7).

【0004】斜板(3)は主軸(4)に固定されてい
て、主軸(4)と共に回転する。そして、上述のように
斜板(3)はピストン(7)を往復運動させる働きをす
るものであるため、主軸(4)の軸方向にスラスト荷重
が発生する。それゆえ、スラスト軸受(10)を介在さ
せてあり、このスラスト軸受としては一般に針状ころ軸
受が使用される。
The swash plate (3) is fixed to the main shaft (4) and rotates together with the main shaft (4). Since the swash plate (3) functions to reciprocate the piston (7) as described above, a thrust load is generated in the axial direction of the main shaft (4). Therefore, a thrust bearing (10) is interposed, and a needle roller bearing is generally used as the thrust bearing.

【0005】[0005]

【発明が解決しようとする課題】カーエアコン用コンプ
レッサの潤滑は、冷媒と共にサイクル内を循環する油
(冷凍機油)によって行なわれる。すなわち、冷媒中に
冷凍機油が混在しており、系内を循環する冷媒によって
油が運ばれる。フレオン系の冷媒が油をよく溶解する特
性を有することは周知のとおりである。この冷媒中に溶
解した油が摩擦部分に供給されることによって潤滑が行
なわれる。
The compressor for a car air conditioner is lubricated by oil (refrigeration oil) circulating in the cycle together with the refrigerant. That is, refrigerating machine oil is mixed in the refrigerant, and the oil is carried by the refrigerant circulating in the system. It is well known that freon-based refrigerants have the property of dissolving oil well. Lubrication is performed by supplying the oil dissolved in the refrigerant to the friction portion.

【0006】しかしながら、油の量は潤滑のためには多
いほどよいが、冷媒と共に循環する油は冷房性能にはマ
イナスの作用をするので、適切な循環油量を選定しなけ
ればならず、一般に油循環率が数%になるようにして封
入されている。それゆえ、コンプレッサに使用されてい
る軸受は、冷媒が混入すること及び潤滑剤の量が少なく
なる等から、一般の油潤滑に比べて厳しい潤滑条件にあ
る。そのため、転動面にピーリング損傷が発生したり、
早期剥離が生じるといった問題が考えられる。
[0006] However, the larger the amount of oil is, the better for lubrication, but the oil circulating together with the refrigerant has a negative effect on the cooling performance. Therefore, an appropriate amount of circulating oil must be selected. It is sealed so that the oil circulation rate is several percent. Therefore, the bearings used in the compressor are under stricter lubrication conditions than general oil lubrication because the refrigerant is mixed therein and the amount of the lubricant is reduced. As a result, peeling damage may occur on the raceway,
There is a problem that early peeling occurs.

【0007】したがって、スラスト針状ころ軸受にあっ
ても、軸受内部に油が供給されやすくして軌道面に油膜
を形成させ、かつ、軌道面上の油膜が切れないようにす
ることが、良好な軸受潤滑を達成する上で望まれる。
[0007] Therefore, even in a thrust needle roller bearing, it is preferable that oil is easily supplied into the bearing so that an oil film is formed on the raceway surface and the oil film on the raceway surface is not broken. It is desired to achieve a proper bearing lubrication.

【0008】この発明の目的は、軸受内部に油が供給さ
れやすくして軌道面に油膜を形成させ、かつ、軌道面上
の油膜が切れないようにした構成の斜板式コンプレッサ
用スラスト針状ころ軸受を提供することである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a swash plate type thrust needle roller for a swash plate type compressor in which oil is easily supplied into a bearing so that an oil film is formed on a raceway surface and the oil film on the raceway surface is not cut off. It is to provide bearings.

【0009】[0009]

【課題を解決するための手段】上記目的を達成するた
め、この発明の斜板式コンプレッサ用スラスト針状ころ
軸受は、コンプレッサのハウジング内に回転自在に支持
された主軸に作用するスラスト荷重を支持するためのス
ラスト針状ころ軸受であって、静止部材に取り付ける第
一の軌道輪と、回転部材と共に回転する第二の軌道輪
と、第一の軌道輪と第二の軌道輪との間に組み込まれた
複数の針状ころと、複数の針状ころを円周方向等間隔に
保持するための保持器とを具備し、針状ころの直径を2
mm以上に設定し、保持器をころ案内形式とし、かつ、
少なくとも一方の軌道輪と保持器との間に0.1mm以
上の間隙を形成させたものである。軌道面と保持器との
間隙が狭くなると、油が供給されにくくなるばかりでな
く、軌道面上の油膜が保持器によって掻き取られてしま
うこともある。このような不具合は、軌道面と保持器と
の間に0.1mm以上の間隙を形成することによって解
消する。
SUMMARY OF THE INVENTION In order to achieve the above object, a thrust needle roller bearing for a swash plate type compressor according to the present invention supports a thrust load acting on a main shaft rotatably supported in a compressor housing. Thrust needle roller bearing for a first race attached to a stationary member, a second race rotating with the rotating member, and assembled between the first race and the second race A plurality of needle rollers, and a retainer for holding the plurality of needle rollers at equal intervals in the circumferential direction.
mm or more, and set the cage to a roller guide type, and
A gap of 0.1 mm or more is formed between at least one race and the cage. When the gap between the raceway surface and the cage is narrow, not only is it difficult to supply oil, but also the oil film on the raceway surface may be scraped off by the cage. Such a problem is solved by forming a gap of 0.1 mm or more between the raceway surface and the cage.

【0010】請求項2の発明のように、第一の軌道輪と
第二の軌道輪の双方に関して保持器との間隙を0.1m
m以上に設定することにより、一層良好な潤滑状態を確
保することができる。
According to the second aspect of the present invention, the gap between the first and second races and the cage is 0.1 m.
By setting it to m or more, a more favorable lubrication state can be ensured.

【0011】請求項3の発明のように、保持器の端部を
第一または第二の軌道輪に向けて折り曲げた場合、その
折り曲げ部の先端と軌道面との間隙を0.1mm以上に
設定するのが好ましい。これにより、軌道輪との干渉が
確実に避けられるため、潤滑油の流入を阻害したり接触
による異音を発生させたりする心配がない。
When the end of the retainer is bent toward the first or second race, the gap between the end of the bent portion and the raceway is set to 0.1 mm or more. It is preferable to set. As a result, interference with the bearing ring can be reliably avoided, so that there is no fear that the inflow of the lubricating oil is obstructed or that abnormal noise due to contact occurs.

【0012】[0012]

【発明の実施の形態】図1〜図3に、既述の図5に例示
した斜板式コンプレッサ(1)において使用するスラス
ト針状ころ軸受(10)の実施の形態を示す。ここで、図
1(A)はスラスト針状ころ軸受(10)の縦断面図であ
り、図1(B)は一方の軌道輪(20a)を取り除いた状
態の正面図である。図2(A)は保持器の部分拡大正面
図であり、図2(B)は図2(A)のB−B断面図であ
る。図3は図2(A)のC−C線に沿ったスラスト針状
ころ軸受の断面図である。
1 to 3 show an embodiment of a thrust needle roller bearing (10) used in the swash plate type compressor (1) illustrated in FIG. 5 described above. Here, FIG. 1 (A) is a longitudinal sectional view of the thrust needle roller bearing (10), and FIG. 1 (B) is a front view in a state where one of the races (20a) is removed. FIG. 2A is a partially enlarged front view of the retainer, and FIG. 2B is a cross-sectional view taken along line BB of FIG. 2A. FIG. 3 is a cross-sectional view of the thrust needle roller bearing along the line CC in FIG.

【0013】このスラスト針状ころ軸受(10)は、図1
(A)に示されるように、一対の軌道輪(20a)(20
b)の間に、保持器(40)で保持された複数の針状ころ
(30)を組み込んで構成されている。
The thrust needle roller bearing (10) is shown in FIG.
As shown in (A), a pair of races (20a) (20
Between b), a plurality of needle rollers (30) held by a holder (40) are incorporated.

【0014】一方の軌道輪(20a)は静止部材としての
例えばハウジング(2)に取り付けられるもので、ここ
ではたとえば薄肉鋼板より打ち抜いた平板状の環状体と
して示してある。軌道輪(20a)の片側の面、つまり図
1(A)では左側の面が軌道面(22a)となっている。
斜板(3)に当接する他方の軌道輪(20b)は、薄肉鋼
板製で、環状の平板部(24)と円筒部(26)とを備えて
いて、プレスによる絞り加工によって成形したものであ
る。平板部(24)の片側の面、つまり図1(A)の右側
の面に軌道面(22b)が形成されている。この軌道輪
(20b)は、円筒部(26)にて主軸(4)と嵌合し、回
転部材たる主軸(4)と共に回転する。
One of the races (20a) is attached to, for example, a housing (2) as a stationary member, and is shown here as a flat annular body punched from a thin steel plate. One surface of the bearing ring (20a), that is, the left surface in FIG. 1 (A) is the bearing surface (22a).
The other race (20b) that contacts the swash plate (3) is made of a thin steel plate, has an annular flat plate (24) and a cylindrical portion (26), and is formed by drawing by pressing. is there. A track surface (22b) is formed on one surface of the flat plate portion (24), that is, on the right surface of FIG. 1 (A). The bearing ring (20b) fits with the main shaft (4) at the cylindrical portion (26) and rotates together with the main shaft (4) as a rotating member.

【0015】軌道輪(20a)(20b)の軌道面(22a)
(22b)は、浸炭窒化あるいは浸炭焼入れによって形成
された表面硬化層を備えている。浸炭窒化あるいは浸炭
焼入れといった熱処理によって軌道面(26)に表面硬化
層を形成させることにより耐久性の向上を図ることがで
きる。この場合、軌道輪(22)の表面層の残留オーステ
ナイト量が15容量%以上となるようにするのが好まし
い。
The raceway surface (22a) of the race (20a) (20b)
(22b) has a surface hardened layer formed by carbonitriding or carburizing and quenching. The durability can be improved by forming a surface hardened layer on the raceway surface (26) by heat treatment such as carbonitriding or carburizing and quenching. In this case, it is preferable that the amount of retained austenite in the surface layer of the bearing ring (22) be 15% by volume or more.

【0016】軌道面(22a)(22b)上を転動する複数
の針状ころ(30)はそれぞれ保持器(40)のポケット
(42)に転動自在に収容され、図1(B)のように放射
状に配列されている。保持器(40)は薄肉鋼板を図2に
示すような形状に成形したものである。そして、各ポケ
ット(42)はプレスによる打抜き加工により形成され、
その形状は二点鎖線で示す針状ころ(30)の輪郭に対応
した略長方形であって、長手方向の中央と両端に幅狭部
(44)(46)が形成され、中央の幅狭部(44)と両端の
幅狭部(46)との間に幅広部(48)が形成されている。
A plurality of needle rollers (30) rolling on the raceway surfaces (22a) (22b) are respectively rotatably accommodated in pockets (42) of the retainer (40), and are shown in FIG. Are arranged radially. The retainer (40) is formed by forming a thin steel plate into a shape as shown in FIG. Then, each pocket (42) is formed by punching with a press,
The shape is a substantially rectangular shape corresponding to the outline of the needle roller (30) shown by a two-dot chain line, and narrow portions (44) and (46) are formed at the center and both ends in the longitudinal direction. A wide portion (48) is formed between (44) and the narrow portions (46) at both ends.

【0017】 幅狭部(44)(46)の間隔は針状ころ(3
0)の直径(d)よりも僅かに小さく、幅広部(48)の
間隔は針状ころ(30)の直径(d)よりも僅かに大きく
設定してある。そして、幅広部(48)が微小な案内すき
まにて針状ころ(30)と接触することとなる。保持器
(40)の案内形式に関して言うならば、保持器(40)が
軌道輪(20a)(20b)に接触することなく案内される
ことから「ころ案内」である。また、中央の幅狭部(4
4)と両端部の幅狭部(46)は、図2(B)から分かる
ように、一点鎖線で示す針状ころ(30)の軸線を跨いで
その両側に振り分けて配置されてある。したがって、中
央の幅狭部(44)および各端部の幅狭部(46)(46)が
ころ止め部となる。
[0017] The interval between the narrow portions (44) and (46) is
0) slightly smaller than the diameter (d) of the wide part (48)
Spacing is slightly larger than needle roller (30) diameter (d)
It has been set. And the wide part (48) is a small guide plow
It will come into contact with the needle rollers (30). Cage
As for the guidance form of (40), the cage (40)
Guided without contacting the races (20a) (20b)
This is "roller guidance". Also, the narrow part in the center (4
4) and narrow portions (46) at both ends can be seen from FIG. 2 (B).
As shown in the figure, straddle the axis of the needle roller (30)
They are distributed on both sides. Therefore, in
The narrow part at the center (44) and the narrow part at each end (46) (46)
Roller stopper.

【0018】中央の幅狭部(44)または両端部の幅狭部
(46)の弾性変形を利用して針状ころ(30)をポケット
(42)内に押し込むことによって、保持器(40)にころ
(30)を組み込むことができ、すべての針状ころ(30)
を組み込むとユニットハンドリングが可能な保持器付き
ころが構成される。
The needle roller (30) is pushed into the pocket (42) by utilizing the elastic deformation of the narrow portion (44) at the center or the narrow portion (46) at both ends, whereby the retainer (40) is pressed. Rollers (30) can be incorporated, all needle rollers (30)
Incorporating the above constitutes a roller with a retainer capable of unit handling.

【0019】中央の幅狭部(44)と軌道面(22a)との
間隙(C 1 )を0.1mm以上に設定する。また、両端
の幅狭部(46)と軌道面(22b)との間隙(C 2 )を
0.1mm以上に設定する。なお、このような間隙を確
保する必要上、針状ころ(30)の直径(d)は2mm以
上に設定する。
The gap (C 1 ) between the central narrow portion (44) and the raceway surface (22a) is set to 0.1 mm or more. The gap (C 2 ) between the narrow portions (46) at both ends and the raceway surface (22b) is set to 0.1 mm or more. In order to secure such a gap, the diameter (d) of the needle roller (30) is set to 2 mm or more.

【0020】針状ころ(30)の保持に直接には寄与しな
い保持器(40)の端部に関しては、保持器(40)の強度
その他の仕様に応じて種々の形状が採用される。図4に
示すように、端部を軌道輪側に折り曲げた保持器の場
合、その折り曲げ端部と軌道輪の軌道面との間に間隙を
設けて干渉を防ぐようにする。たとえば、図4の実施の
形態では、間隙(C 3 )を0.1mm以上に設定するの
が好ましい。
Regarding the end of the retainer (40) that does not directly contribute to the retention of the needle rollers (30), various shapes are adopted according to the strength and other specifications of the retainer (40). As shown in FIG. 4, in the case of the retainer whose end is bent toward the bearing ring, a gap is provided between the bent end and the raceway surface of the bearing ring to prevent interference. For example, in the embodiment of FIG. 4, it is preferable to set the gap (C 3 ) to 0.1 mm or more.

【0021】[0021]

【実施例】図4に示す構成のスラスト針状ころ軸受を以
下のような詳細に従って製作した。 軌道輪(20b) 内径:40mm 外径:69mm 材料:SCM、浸炭焼入れ 針状ころ(30) 直径:3mm 長さ:6.8mm 材料:SUJ 本数:38 保持器(40) 板厚:0.6 材料:SPCC
EXAMPLE A thrust needle roller bearing having the structure shown in FIG. 4 was manufactured according to the following details. Track ring (20b) Inner diameter: 40mm Outer diameter: 69mm Material: SCM, carburized and quenched Needle rollers (30) Diameter: 3mm Length: 6.8mm Material: SUJ Number: 38 Cage (40) Sheet thickness: 0.6 Material: SPCC

【0022】上記実施例の構成において、保持器と軌道
面との間隙(c 1 )(c 2 )(c 3)の大小が、焼付き
や音響に対して及ぼす影響を確認するため、図8に概略
構成を示す試験装置を使用して試験を行った。ただし、
音響については音響確認試験機で行った。試験結果は表
1に示すとおりである。なお、実施例1、実施例2、比
較例1はいずれも保持器の案内形式をころ案内とし、間
隙(c 1 )(c 2 )(c 3 )を異ならせたものであり、
比較例2は保持器の案内形式を軌道輪案内としたもので
ある。試験条件は次のとおりである。
In the configuration of the above embodiment, FIG. 8 was used to confirm the effect of the size of the gaps (c 1 ), (c 2 ), and (c 3 ) between the cage and the raceway surface on seizure and sound. The test was performed using a test apparatus having a schematic configuration shown in FIG. However,
The sound was measured with an acoustic confirmation tester. The test results are as shown in Table 1. In each of Example 1, Example 2, and Comparative Example 1, the guide type of the cage was roller guide, and the gaps (c 1 ), (c 2 ), and (c 3 ) were different.
In Comparative Example 2, the guide type of the cage is the raceway guide. The test conditions are as follows.

【0023】 荷重(P):0.1c cは基本動定格荷重 回転数:10,000rpm 時間:100時間 潤滑:PAG+フロン134a(試験軸受(図8のX)
の雰囲気を、油を溶解した冷媒で充満させる。) 試験結果を表1に示す。
Load (P): 0.1 c c is the basic dynamic load rating Rotational speed: 10,000 rpm Time: 100 hours Lubrication: PAG + CFC 134a (test bearing (X in FIG. 8)
Is filled with a refrigerant in which oil is dissolved. Table 1 shows the test results.

【0024】[0024]

【表1】 [Table 1]

【0025】試験結果から理解されるとおり、保持器と
軌道面の間隙を0.1以上に設定することにより、焼付
きがなくなって耐久性が向上し得ること、および、回転
中の擦過音のような異音の発生を防止することができ
る。
As can be understood from the test results, by setting the gap between the cage and the raceway surface to be 0.1 or more, the seizure can be eliminated and the durability can be improved. Generation of such abnormal noise can be prevented.

【0026】[0026]

【発明の効果】以上説明したように、この発明によれ
ば、保持器の案内形式をころ案内とすると共に保持器と
軌道輪との間に充分な間隙を設けたから、保持器が軌道
面上の油膜を掻き落とすことがなくなり、所期の潤滑性
能が長期にわたって維持され、耐焼付き性、耐久性が向
上する。
As described above, according to the present invention, the guide type of the cage is a roller guide and a sufficient gap is provided between the cage and the race, so that the cage is positioned on the raceway surface. Oil film is not scraped off, the desired lubrication performance is maintained for a long time, and the seizure resistance and durability are improved.

【0027】また、保持器の案内形式をころ案内とする
と共に保持器と軌道輪との間に充分な間隙を設けたこと
により、回転中に保持器と軌道輪が接触して擦過音など
の異音を発する心配がない。したがって、この発明によ
るスラスト針状ころ軸受を使用することによって、斜板
式コンプレッサの、ひいてはそれを搭載した自動車の、
低振動低騒音に貢献することが可能となる。
In addition, since the retainer is guided by rollers and a sufficient gap is provided between the retainer and the bearing ring, the retainer and the bearing ring come into contact with each other during rotation, thereby causing noise such as abrasion noise. No worries about making noise. Therefore, by using the thrust needle roller bearing according to the present invention, the swash plate type compressor and, consequently, the automobile equipped with it,
It is possible to contribute to low vibration and low noise.

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

【図1】(A)はスラスト針状ころ軸受の縦断面図、
(B)は一方の軌道輪を取り除いた状態の正面図であ
る。
FIG. 1A is a longitudinal sectional view of a thrust needle roller bearing,
(B) is a front view in the state where one race was removed.

【図2】(A)は保持器の部分拡大正面図、(B)は
(A)のB−B断面図である。
FIG. 2A is a partially enlarged front view of a retainer, and FIG. 2B is a cross-sectional view taken along line BB of FIG. 2A.

【図3】図2(A)のC−C線に沿ったスラスト針状こ
ろ軸受の部分断面図である。
FIG. 3 is a partial cross-sectional view of the thrust needle roller bearing taken along line CC of FIG. 2 (A).

【図4】別の実施の形態を示すスラスト針状ころ軸受の
部分断面図である。
FIG. 4 is a partial cross-sectional view of a thrust needle roller bearing showing another embodiment.

【図5】両斜板タイプの斜板式コンプレッサの縦断面図
である。
FIG. 5 is a longitudinal sectional view of a double-swash plate type swash plate compressor.

【図6】片斜板タイプの斜板式コンプレッサの縦断面図
である。
FIG. 6 is a longitudinal sectional view of a single-swash plate type swash plate compressor.

【図7】片斜板タイプの可変容量斜板式コンプレッサの
縦断面図である。
FIG. 7 is a longitudinal sectional view of a single-swash plate type variable displacement swash plate compressor.

【図8】試験装置の縦断面図である。FIG. 8 is a longitudinal sectional view of the test apparatus.

【符号の説明】[Explanation of symbols]

1 斜板式コンプレッサ 2 ハウジング(静止部材) 3 斜板(回転部材) 4 主軸(回転部材) 5 ラジアル軸受 6 シリンダボア 7 ピストン 8 凹陥部 9 シュー 10 スラスト軸受 20a 軌道輪 22a 軌道面 20b 軌道輪 22b 軌道面 24 平板部 26 円筒部 30 針状ころ 40 保持器 42 ポケット 44 中央の幅狭部(ころ止め) 46 両端部の幅狭部(ころ止め) 48 幅広部(案内部) c 1 ,c 2 ,c 3 間隙Reference Signs List 1 swash plate compressor 2 housing (stationary member) 3 swash plate (rotating member) 4 main shaft (rotating member) 5 radial bearing 6 cylinder bore 7 piston 8 recess 9 shoe 10 thrust bearing 20a raceway 22a raceway surface 20b raceway surface 22b raceway surface 24 flat plate portion 26 cylindrical portion 30 needle roller 40 cage 42 pockets 44 center of the narrow portion (roller stopper) the narrow portion 46 at both ends (roller stopper) 48 wide portion (guide portion) c 1, c 2, c 3 gap

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 コンプレッサのハウジング内に回転自在
に支持された主軸に作用するスラスト荷重を支持するた
めのスラスト針状ころ軸受であって、静止部材に取り付
ける第一の軌道輪と、回転部材と共に回転する第二の軌
道輪と、第一の軌道輪と第二の軌道輪との間に組み込ま
れた複数の針状ころと、複数の針状ころを円周方向等間
隔に保持するための保持器とを具備し、針状ころの直径
を2mm以上に設定し、保持器をころ案内形式とし、か
つ、少なくとも一方の軌道輪と保持器との間に0.1m
m以上の間隙を形成させたことを特徴とする斜板式コン
プレッサ用スラスト針状ころ軸受。
1. A thrust needle roller bearing for supporting a thrust load acting on a main shaft rotatably supported in a housing of a compressor, the thrust needle roller bearing comprising: a first race attached to a stationary member; A second rotating bearing ring, a plurality of needle rollers incorporated between the first bearing ring and the second bearing ring, and for holding the plurality of needle rollers at equal intervals in the circumferential direction. A needle roller having a diameter of at least 2 mm, a roller guide type, and a distance of at least 0.1 m between at least one of the races and the cage.
A thrust needle roller bearing for a swash plate type compressor, wherein a gap of at least m is formed.
【請求項2】 保持器と第一の軌道輪の軌道面との間隙
を0.1mm以上に設定し、保持器と第二の軌道輪の軌
道面との間隙を0.1mm以上に設定したことを特徴と
する請求項1の斜板式コンプレッサ用スラスト針状ころ
軸受。
2. The gap between the cage and the raceway surface of the first race is set to 0.1 mm or more, and the gap between the cage and the raceway surface of the second race is set to 0.1 mm or more. The thrust needle roller bearing for a swash plate type compressor according to claim 1, wherein:
【請求項3】 保持器の端部を第一または第二の軌道輪
に向けて折り曲げ、折り曲げ部の先端と軌道面との間隙
を0.1mm以上に設定したことを特徴とする請求項1
または2の斜板式コンプレッサ用スラスト針状ころ軸
受。
3. An end of the retainer is bent toward the first or second race, and a gap between the end of the bent portion and the raceway is set to 0.1 mm or more.
Or 2 thrust needle roller bearings for swash plate compressors.
JP10157977A 1998-06-05 1998-06-05 Thrust needle roller bearing for swash plate type compressor Pending JPH11351245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10157977A JPH11351245A (en) 1998-06-05 1998-06-05 Thrust needle roller bearing for swash plate type compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10157977A JPH11351245A (en) 1998-06-05 1998-06-05 Thrust needle roller bearing for swash plate type compressor

Publications (1)

Publication Number Publication Date
JPH11351245A true JPH11351245A (en) 1999-12-24

Family

ID=15661565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10157977A Pending JPH11351245A (en) 1998-06-05 1998-06-05 Thrust needle roller bearing for swash plate type compressor

Country Status (1)

Country Link
JP (1) JPH11351245A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418351A1 (en) * 2002-11-07 2004-05-12 NTN Corporation Support structure carrying thrust load of compressor with two row thrust roller bearing
JP2007198431A (en) * 2006-01-24 2007-08-09 Nippon Thompson Co Ltd Thrust bearing
JP2007327517A (en) * 2006-06-06 2007-12-20 Ntn Corp Thrust roller bearing
JP2008202797A (en) * 2008-04-07 2008-09-04 Jtekt Corp Thrust roller bearing cage manufacturing method
JP2009115318A (en) * 2008-12-10 2009-05-28 Ntn Corp Rolling bearing
US7736066B2 (en) 2005-03-03 2010-06-15 Nsk Ltd. Thrust cylindrical roller bearing
JP2010174970A (en) * 2009-01-29 2010-08-12 Jtekt Corp Thrust roller bearing
US7896558B2 (en) 2006-06-06 2011-03-01 Ntn Corporation Thrust roller bearing
WO2023036353A1 (en) * 2021-09-09 2023-03-16 Schaeffler Technologies AG & Co. KG Axial rolling bearing unit with rolling bodies, which are arranged between annular axial bearing washers, in the form of a self-fixing assembly

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004156548A (en) * 2002-11-07 2004-06-03 Ntn Corp Supporting structure for receiving thrust load of compressor and thrust needle roller bearing
EP1418351A1 (en) * 2002-11-07 2004-05-12 NTN Corporation Support structure carrying thrust load of compressor with two row thrust roller bearing
US7398724B2 (en) 2002-11-07 2008-07-15 Ntn Corporation Support structure carrying thrust load of compressor and thrust needle roller bearing
US7736066B2 (en) 2005-03-03 2010-06-15 Nsk Ltd. Thrust cylindrical roller bearing
DE112006000523B4 (en) * 2005-03-03 2017-03-02 Nsk Ltd. Axial cylindrical roller bearings
JP2007198431A (en) * 2006-01-24 2007-08-09 Nippon Thompson Co Ltd Thrust bearing
JP4624267B2 (en) * 2006-01-24 2011-02-02 日本トムソン株式会社 Thrust bearing
JP2007327517A (en) * 2006-06-06 2007-12-20 Ntn Corp Thrust roller bearing
US7896558B2 (en) 2006-06-06 2011-03-01 Ntn Corporation Thrust roller bearing
JP4668846B2 (en) * 2006-06-06 2011-04-13 Ntn株式会社 Thrust roller bearing
JP4706715B2 (en) * 2008-04-07 2011-06-22 株式会社ジェイテクト Method of manufacturing cage for thrust roller bearing
JP2008202797A (en) * 2008-04-07 2008-09-04 Jtekt Corp Thrust roller bearing cage manufacturing method
JP2009115318A (en) * 2008-12-10 2009-05-28 Ntn Corp Rolling bearing
JP2010174970A (en) * 2009-01-29 2010-08-12 Jtekt Corp Thrust roller bearing
WO2023036353A1 (en) * 2021-09-09 2023-03-16 Schaeffler Technologies AG & Co. KG Axial rolling bearing unit with rolling bodies, which are arranged between annular axial bearing washers, in the form of a self-fixing assembly

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