JPH05118323A - Thrust support device of revolving member - Google Patents
Thrust support device of revolving memberInfo
- Publication number
- JPH05118323A JPH05118323A JP3304033A JP30403391A JPH05118323A JP H05118323 A JPH05118323 A JP H05118323A JP 3304033 A JP3304033 A JP 3304033A JP 30403391 A JP30403391 A JP 30403391A JP H05118323 A JPH05118323 A JP H05118323A
- Authority
- JP
- Japan
- Prior art keywords
- eccentric
- bearing
- scroll member
- rotation
- angular bearing
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/42—Pumps with cylinders or pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、スクロール圧縮機等
に使用されて、旋回スクロール部材等の旋回部材を、自
転しないように支持するスラスト支持装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thrust support device used in a scroll compressor or the like to support a revolving member such as a revolving scroll member so as not to rotate.
【０００２】[0002]
【従来の技術】スクロール圧縮機は、図３に示すように
旋回スクロール部材５１および固定スクロール部材５２
に螺旋状隔壁５３，５４を各々設け、両隔壁５３，５４
間に形成される圧縮室５５を、旋回スクロール部材５１
の偏心回転に伴って容積変化させることにより圧縮動作
を行うものである。旋回スクロール部材５１は、下面に
突設した軸部５１ａが回転駆動軸５７の偏心孔に係合
し、回転駆動軸５７の回転により偏心量ｅの旋回半径で
偏心回転させられる。回転駆動軸５７は、モータ５８の
ロータ軸からなり、固定部材６１に上下の軸受５９，６
０で支持される。2. Description of the Related Art A scroll compressor, as shown in FIG. 3, has an orbiting scroll member 51 and a fixed scroll member 52.
Spiral partition walls 53 and 54 are respectively provided on the
The compression chamber 55 formed between
The compression operation is performed by changing the volume with the eccentric rotation. The orbiting scroll member 51 is eccentrically rotated by the orbiting radius of the eccentricity e by the rotation of the rotary drive shaft 57 by engaging the eccentric hole of the rotary drive shaft 57 with the shaft portion 51a protruding from the lower surface. The rotary drive shaft 57 is composed of a rotor shaft of a motor 58, and has upper and lower bearings 59, 6 on a fixed member 61.
Supported by 0.
【０００３】旋回スクロール部材５１は、圧縮室５５の
ガス圧によって大きなスラスト荷重が作用するため、ス
ラスト軸受６２で固定部材６１に支持してある。スラス
ト軸受６２には、偏心回転の支持が可能な汎用の転がり
軸受がないため、一般には滑り軸受が使用される。ま
た、旋回スクロール部材５１は自転を阻止して一定姿勢
のままで偏心回転させる必要があるため、旋回スクロー
ル部材５１と固定部材６１との間に適宜の自転防止装置
（図示せず）が設けられる。The orbiting scroll member 51 is supported by a fixed member 61 by a thrust bearing 62 because a large thrust load is applied by the gas pressure in the compression chamber 55. Since the thrust bearing 62 does not have a general-purpose rolling bearing capable of supporting eccentric rotation, a slide bearing is generally used. Further, since the orbiting scroll member 51 needs to prevent rotation and be eccentrically rotated in a fixed posture, an appropriate rotation preventing device (not shown) is provided between the orbiting scroll member 51 and the fixed member 61. ..
【０００４】しかし、上記の構造では、旋回スクロール
部材５１の支持に滑り軸受からなるスラスト軸受６２を
使用しているため、摩擦係数が大きく、作動効率が低下
するという問題点がある。However, in the above structure, since the thrust bearing 62 made of a slide bearing is used to support the orbiting scroll member 51, there is a problem that the coefficient of friction is large and the operating efficiency is lowered.
【０００５】そのため、転がり接触化を図る工夫が試み
られており、その一例として、図４（Ａ）のように旋回
スクロール部材５１と固定部材６２とに凹部６３，６４
を設け、ボール６５を介在させたものが提案されてい
る。凹部６３，６４は周方向の複数箇所に形成される。
凹部６３，６４の直径は、内部でボール６５が転がり可
能な軌道径を旋回スクロール部材５１の偏心量ｅ（図
３）に等しく設計してあり、このようにボール６５の移
動範囲を拘束することにより旋回スクロール部材５１の
自転防止も行われる。For this reason, attempts have been made to achieve rolling contact, and as one example, recesses 63 and 64 are formed in the orbiting scroll member 51 and the fixing member 62 as shown in FIG. 4 (A).
It is proposed that a ball be provided and a ball 65 be interposed. The recesses 63 and 64 are formed at a plurality of positions in the circumferential direction.
The diameters of the recesses 63 and 64 are designed such that the orbit diameter within which the ball 65 can roll is designed to be equal to the eccentric amount e (FIG. 3) of the orbiting scroll member 51, and thus the movement range of the ball 65 is restricted. Thus, the rotation of the orbiting scroll member 51 is also prevented.
【０００６】凹部６３の代わりに、図４（Ｂ）に示すよ
うに溝断面が円弧状の軌道溝６６，６７を、前記偏心量
ｅの直径で環状に設けたものも提案されている（例え
ば、特開昭５５−１５５９１６号）。Instead of the recessed portion 63, it has been proposed that, as shown in FIG. 4 (B), raceway grooves 66 and 67 having an arc-shaped groove cross section are provided in an annular shape with the diameter of the eccentricity e (for example,). , JP-A-55-155916).
【０００７】[0007]
【発明が解決しようとする課題】図４（Ａ）の構造で
は、凹部６３，６４の底面が平坦面であるため、ボール
６５と凹部６３，６４の底面との接触が点接触となる。
そのため、前記のように圧縮室５５（図３）のガス圧で
大きなスラスト荷重が作用すると、単位面積当たりの接
触圧が非常に大きくなり、摩耗や転がり疲れが著しく、
軸受寿命が短くなるという問題点がある。In the structure of FIG. 4A, since the bottom surfaces of the recesses 63 and 64 are flat surfaces, the contact between the ball 65 and the bottom surfaces of the recesses 63 and 64 is point contact.
Therefore, when a large thrust load is applied by the gas pressure of the compression chamber 55 (FIG. 3) as described above, the contact pressure per unit area becomes very large, and wear and rolling fatigue are remarkable,
There is a problem that the life of the bearing is shortened.
【０００８】図４（Ｂ）の例の場合は、軌道溝６６，６
７の内面が円弧状であるため、ボール６５に対する接触
面積が大きくなって面圧が低下し、軸受寿命が向上す
る。しかし、このような円弧状断面の環状の軌道溝６
６，６７を旋回スクロール部材５１や固定フレーム６１
に加工することは難しく、そのため生産性が悪いという
問題点がある。In the case of the example of FIG. 4B, the raceway grooves 66, 6
Since the inner surface of 7 is arcuate, the contact area with the ball 65 is increased, the surface pressure is reduced, and the bearing life is improved. However, such an annular raceway groove 6 having an arcuate cross section
6, 67 to orbiting scroll member 51 and fixed frame 61
However, there is a problem that productivity is poor.
【０００９】この発明の目的は、旋回部材の自転を防止
して偏心回転を支持するスラスト支持装置において、作
動効率および寿命の向上と、製造の容易とを図ることで
ある。SUMMARY OF THE INVENTION An object of the present invention is to improve the operating efficiency and life of a thrust support device for preventing the turning member from rotating and supporting eccentric rotation, and to facilitate its manufacture.
【００１０】[0010]
【課題を解決するための手段】この発明のスラスト支持
装置は、回転駆動軸の端部に回転中心から偏心してアン
ギュラ軸受を取付け、このアンギュラ軸受に旋回部材を
設置したものである。旋回部材は周方向の一部を回転自
在な偏心軸で固定部材と連結し、その偏心軸の偏心量を
前記アンギュラ軸受の偏心量と等しくする。In the thrust support device of the present invention, an angular bearing is attached to the end of the rotary drive shaft so as to be eccentric from the center of rotation, and a swiveling member is installed on the angular bearing. A part of the turning member in the circumferential direction is connected to the fixing member by a rotatable eccentric shaft, and the eccentric amount of the eccentric shaft is made equal to the eccentric amount of the angular bearing.
【００１１】[0011]
【作用】回転駆動軸が回転すると、この軸にアンギュラ
軸受を介して偏心位置に支持された旋回部材は、アンギ
ュラ軸受と共に偏心回転する。このとき、旋回部材の自
転は、旋回部材と固定部材との間に連結された偏心軸に
より防止される。旋回部材に作用するスラスト荷重は、
アンギュラ軸受を介して回転駆動軸に支持される。When the rotary drive shaft rotates, the turning member supported by the shaft at the eccentric position via the angular bearing rotates eccentrically together with the angular bearing. At this time, rotation of the turning member is prevented by the eccentric shaft connected between the turning member and the fixed member. The thrust load acting on the swivel member is
It is supported by a rotary drive shaft via an angular bearing.
【００１２】[0012]
【実施例】この発明の一実施例を図１に基づいて説明す
る。この実施例はスクロール圧縮機に応用した例であ
る。固定スクロール部材１および旋回スクロール部材２
は、螺旋状の隔壁３，４を各々有し、両隔壁３，４間に
圧縮室５が形成されている。固定スクロール部材１は、
ハウジングとなる固定部材６に固定されている。旋回ス
クロール部材２を駆動する回転駆動軸７は、モータ１１
のロータ軸となるものであり、前記固定部材６に上下の
軸受１２，１３で回転自在に支持されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIG. This embodiment is an example applied to a scroll compressor. Fixed scroll member 1 and orbiting scroll member 2
Has spiral partition walls 3 and 4, and a compression chamber 5 is formed between the partition walls 3 and 4. The fixed scroll member 1 is
It is fixed to a fixing member 6 that serves as a housing. The rotary drive shaft 7 that drives the orbiting scroll member 2 includes a motor 11
Of the rotor shaft and is rotatably supported by the fixed member 6 by upper and lower bearings 12 and 13.
【００１３】旋回スクロール部材２は、回転駆動軸７の
上端にアンギュラ軸受８で支持すると共に、偏心回転力
伝達用のラジアル軸受９に係合させ、かつ周方向の一部
で、自転防止用の偏心軸１０により固定部材６と連結し
てある。The orbiting scroll member 2 is supported on an upper end of the rotary drive shaft 7 by an angular bearing 8 and is engaged with a radial bearing 9 for transmitting an eccentric rotational force, and is a part of the circumferential direction for preventing rotation. It is connected to the fixing member 6 by an eccentric shaft 10.
【００１４】すなわち、回転駆動軸７の上端の大径部７
ａに、回転中心Ｏから偏心量ａだけ偏心してアンギュラ
軸受８の外輪を取付け、その内輪に旋回スクロール部材
２の下面の円形突部１４を固定してある。アンギュラ軸
受８は、上方からのスラスト荷重の支持が可能な玉軸受
形式のものである。また、回転駆動軸７の大径部７ａに
は、アンギュラ軸受８と同心に偏心孔１６が設けてあ
り、旋回スクロール部材２の円形突部１４から段付軸状
に突出した被伝達軸１５を、偏心孔１６内に前記ラジア
ル軸受９を介して係合させてある。ラジアル軸受９には
ニードル軸受等が用いられる。That is, the large diameter portion 7 at the upper end of the rotary drive shaft 7
The outer ring of the angular bearing 8 is attached to a by being eccentric from the rotation center O by an eccentric amount a, and the circular projection 14 on the lower surface of the orbiting scroll member 2 is fixed to the inner ring. The angular bearing 8 is a ball bearing type capable of supporting a thrust load from above. Further, an eccentric hole 16 is provided concentrically with the angular bearing 8 in the large-diameter portion 7a of the rotary drive shaft 7, and the transmitted shaft 15 protruding from the circular protrusion 14 of the orbiting scroll member 2 in a stepped shaft shape is formed. , Is engaged in the eccentric hole 16 via the radial bearing 9. A needle bearing or the like is used as the radial bearing 9.
【００１５】偏心軸１０は、偏心複列円筒ころ軸受１７
の内輪からなり、軸受１７の上下の外輪１８，１９を旋
回スクロール部材２および固定部材６に各々取付けてあ
る。上側の外輪１８は鍔なし形式のものであり、下側の
外輪１９は偏心軸１０の自重を受けるために鍔付きとし
てある。偏心軸１０の偏心量ｂは、アンギュラ軸受８の
偏心量ａと等しくする。The eccentric shaft 10 includes an eccentric double row cylindrical roller bearing 17
The outer ring 18 and the upper and lower outer rings 18 of the bearing 17 are attached to the orbiting scroll member 2 and the fixed member 6, respectively. The outer ring 18 on the upper side is of a collarless type, and the outer ring 19 on the lower side is provided with a collar to receive the weight of the eccentric shaft 10. The eccentricity b of the eccentric shaft 10 is set equal to the eccentricity a of the angular bearing 8.
【００１６】上記構成の動作を説明する。回転駆動軸７
を回転させると、その偏心孔１６に被伝達軸１５で係合
した旋回スクロール部材２は、偏心孔１６の偏心量ａの
旋回半径で偏心回転を行う。偏心回転に伴い、旋回スク
ロール部材２には自転を生じさせようとする力が作用す
るが、旋回スクロール部材２はその偏心回転の半径ａと
同じ偏心量ｂの偏心軸１０により周方向の一部で固定部
材６に連結されているため、自転が阻止される。The operation of the above configuration will be described. Rotary drive shaft 7
When is rotated, the orbiting scroll member 2 engaged with the eccentric hole 16 by the transmitted shaft 15 performs eccentric rotation with an orbiting radius of the eccentric amount a of the eccentric hole 16. With the eccentric rotation, a force that causes rotation of the orbiting scroll member 2 acts, but the orbiting scroll member 2 is partially rotated in the circumferential direction by the eccentric shaft 10 having the same eccentric amount b as the radius a of the eccentric rotation. Since it is connected to the fixed member 6 at, rotation is prevented.
【００１７】このように、旋回スクロール部材２が自転
を伴うことなく偏心回転することにより、固定スクロー
ル部材１と旋回スクロール部材２間の圧縮室５が容積変
化し、圧縮動作が行われる。圧縮室５のガス圧により旋
回スクロール部材２に作用するスラスト荷重は、アンギ
ュラ軸受８を介して回転駆動軸７に伝わり、下部の軸受
１３で固定部材６に支持される。As described above, the eccentric rotation of the orbiting scroll member 2 does not cause rotation, so that the volume of the compression chamber 5 between the fixed scroll member 1 and the orbiting scroll member 2 changes, and the compression operation is performed. The thrust load acting on the orbiting scroll member 2 due to the gas pressure in the compression chamber 5 is transmitted to the rotary drive shaft 7 via the angular bearing 8 and is supported by the fixed member 6 by the lower bearing 13.
【００１８】このスラスト支持装置によると、このよう
に偏心回転する旋回スクロール部材２のスラスト荷重
を、転がり軸受であるアンギュラ軸受８で支持すること
ができ、摩擦抵抗を軽減して圧縮機の効率向上が図れ
る。アンギュラ軸受８は、スラスト荷重の支持機能の優
れたものが多数製品化されており、そのためスラスト支
持装置の長寿命化が図れる。また、独立して製品化され
たアンギュラ軸受８を組み込むものであるため、旋回ス
クロール部材２や固定部材６に転動体の軌道を直接に加
工するものと異なり、製造が容易に行える。According to this thrust support device, the thrust load of the orbiting scroll member 2 which eccentrically rotates in this way can be supported by the angular bearing 8 which is a rolling bearing, which reduces frictional resistance and improves the efficiency of the compressor. Can be achieved. A large number of angular bearings 8 having excellent thrust load supporting functions have been commercialized, so that the life of the thrust supporting device can be extended. Further, since the angular bearing 8 that is independently commercialized is incorporated, unlike the case where the orbits of the rolling elements are directly processed on the orbiting scroll member 2 and the fixed member 6, the manufacturing can be easily performed.
【００１９】さらに、アンギュラ軸受８を使用したた
め、平面座型のスラスト玉軸受と異なり、荷重支持方向
と反対方向に内外輪が抜けることがなく、そのため圧縮
機の組み立て作業等が行い易い。しかも、アンギュラ軸
受８はラジアル荷重の負担も行えるため、ラジアル軸受
９を小容量のものとし、あるいはラジアル軸受９および
被伝達軸１５を無くし、アンギュラ軸受８のみで偏心回
転の駆動を伝えるようにするとこもできる。Further, since the angular bearing 8 is used, unlike the flat seat type thrust ball bearing, the inner and outer rings do not come out in the direction opposite to the load supporting direction, so that the assembling work of the compressor and the like can be easily performed. Moreover, since the angular bearing 8 can also bear the radial load, the radial bearing 9 is made to have a small capacity, or the radial bearing 9 and the transmitted shaft 15 are eliminated, and the angular bearing 8 alone transmits the eccentric rotation drive. You can also do it.
【００２０】なお、前記実施例では一方向の荷重を支持
するアンギュラ軸受８を使用したが、旋回スクロール部
材２に逆方向のスラスト荷重が作用する場合は、図１の
アンギュラ軸受８に代えて、例えば図２に示すような４
点接触式のアンギュラ軸受２０を用いると良い。これに
より、両方向のスラスト荷重の支持が行え、また複列の
アンギュラ軸受に比べてコンパクト化が図れる。In the above embodiment, the angular bearing 8 which supports the load in one direction is used. However, when the thrust load in the opposite direction acts on the orbiting scroll member 2, instead of the angular bearing 8 in FIG. For example, 4 as shown in FIG.
It is preferable to use the point contact type angular bearing 20. As a result, the thrust load can be supported in both directions, and it can be made more compact than a double-row angular bearing.
【００２１】また、前記実施例では自転防止用の偏心軸
１０を円筒ころ軸受１７の内輪で構成したが、偏心軸１
０を滑り接触で旋回スクロール部材２および固定部材６
に回転自在に連結しても良い。Further, in the above embodiment, the eccentric shaft 10 for preventing rotation is constituted by the inner ring of the cylindrical roller bearing 17, but the eccentric shaft 1
Orbiting scroll member 2 and fixed member 6 by sliding contact with 0
It may be rotatably connected to.
【００２２】[0022]
【発明の効果】この発明のスラスト支持装置は、回転駆
動軸に偏心して取付けたアンギュラ軸受に旋回部材を設
置し、旋回部材と固定部材とを偏心軸で連結したもので
あるため、偏心回転する旋回部材のスラスト荷重を転が
り接触で支持すると共に、旋回部材の自転を阻止するこ
とができる。アンギュラ軸受は、スラスト荷重の支持機
能の優れたものが多数製品化されており、そのためスラ
スト支持装置の長寿命化が容易に図れる。また、独立し
て製品化されたアンギュラ軸受を組み込むものであるた
め、旋回部材に転動体の軌道を直接に加工するものと異
なり、製造が容易に行える。According to the thrust support device of the present invention, since the swivel member is installed on the angular bearing eccentrically attached to the rotary drive shaft and the swivel member and the fixed member are connected by the eccentric shaft, the thrust support device rotates eccentrically. It is possible to support the thrust load of the turning member in rolling contact and prevent the turning member from rotating. A large number of angular bearings having excellent thrust load supporting functions have been commercialized, so that the life of the thrust supporting device can be easily extended. Further, since the angular bearing that is independently commercialized is incorporated, unlike the case where the orbit of the rolling element is directly processed on the turning member, the manufacturing can be easily performed.
【図１】この発明の一実施例のスラスト支持装置を応用
したスクロール圧縮機の断面図である。FIG. 1 is a sectional view of a scroll compressor to which a thrust support device according to an embodiment of the present invention is applied.
【図２】他の実施例におけるアンギュラ軸受の部分断面
図である。FIG. 2 is a partial cross-sectional view of an angular bearing according to another embodiment.
【図３】従来のスクロール圧縮機の概略断面図である。FIG. 3 is a schematic sectional view of a conventional scroll compressor.
【図４】（Ａ），（Ｂ）は各々他の従来例におけるスク
ロール圧縮機のスラスト支持装置の部分断面図である。4A and 4B are partial cross-sectional views of a thrust support device of a scroll compressor in another conventional example.
１…固定スクロール部材、２…旋回スクロール部材、６
…固定部材、７…回転駆動軸、８…アンギュラ軸受、９
…ラジアル軸受、１０…偏心軸、１７…偏心複列円筒こ
ろ軸受DESCRIPTION OF SYMBOLS 1 ... Fixed scroll member, 2 ... Orbiting scroll member, 6
... Fixed member, 7 ... Rotation drive shaft, 8 ... Angular bearing, 9
... Radial bearing, 10 ... Eccentric shaft, 17 ... Eccentric double row cylindrical roller bearing
Claims (1)
動軸の端部に回転中心から偏心してアンギュラ軸受を取
付け、このアンギュラ軸受に旋回部材を設置し、前記旋
回部材の周方向の一部を、偏心量が前記アンギュラ軸受
の偏心量と等しい回転自在な偏心軸で前記固定部材に連
結した旋回部材のスラスト支持装置。1. An angular bearing is mounted eccentrically from the center of rotation on the end of a rotary drive shaft rotatably supported by a fixed member, and the swivel member is installed on this angular bearing, and a part of the swivel member in the circumferential direction is provided. The thrust support device for the swivel member, wherein the eccentric amount is connected to the fixed member by a rotatable eccentric shaft whose eccentric amount is equal to the eccentric amount of the angular bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3304033A JPH05118323A (en) | 1991-10-22 | 1991-10-22 | Thrust support device of revolving member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3304033A JPH05118323A (en) | 1991-10-22 | 1991-10-22 | Thrust support device of revolving member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05118323A true JPH05118323A (en) | 1993-05-14 |
Family
ID=17928253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3304033A Pending JPH05118323A (en) | 1991-10-22 | 1991-10-22 | Thrust support device of revolving member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05118323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101237040B1 (en) * | 2004-06-23 | 2013-02-25 | 베르뗑 떼끄놀로지 | Device for guiding a shaft in an oscillating movement |
-
1991
- 1991-10-22 JP JP3304033A patent/JPH05118323A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101237040B1 (en) * | 2004-06-23 | 2013-02-25 | 베르뗑 떼끄놀로지 | Device for guiding a shaft in an oscillating movement |
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