JPH0544676A - Double-throw type oil feeding pump device - Google Patents
Double-throw type oil feeding pump deviceInfo
- Publication number
- JPH0544676A JPH0544676A JP20810191A JP20810191A JPH0544676A JP H0544676 A JPH0544676 A JP H0544676A JP 20810191 A JP20810191 A JP 20810191A JP 20810191 A JP20810191 A JP 20810191A JP H0544676 A JPH0544676 A JP H0544676A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- oil supply
- eccentric
- discharge
- supply passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、スクロール形圧縮機等
における駆動軸の軸端部に取り付け、ロータとヨークと
を備える所謂容積式のポンプ機構を二段設けた二連式給
油ポンプ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual type oil supply pump device provided with two stages of a so-called positive displacement type pump mechanism having a rotor and a yoke, which is attached to the shaft end of a drive shaft in a scroll type compressor or the like. ..
【０００２】[0002]
【従来の技術】従来、所謂容積式のポンプ機構を単段備
えるものは、例えば特開平３−８８９９５号公報等によ
り知られており、又、このポンプ機構を二段設けて、一
方側をスクロールの渦巻体間に画成する圧縮室内に供給
する油インジェクション用として用い、他方側を駆動軸
の軸受部等に供給する潤滑用として用いるようにしたも
のは、本出願人が先に出願した特願平２−２６８１９５
号（平２年１０月４日）により提案されている。2. Description of the Related Art Conventionally, a so-called positive displacement type pump mechanism having a single stage is known, for example, from Japanese Patent Laid-Open No. 3-88995, and two stages of this pump mechanism are provided to scroll one side. The one used for oil injection to be supplied into the compression chamber defined between the spiral bodies and the other side to be used for lubrication to supply to the bearing portion of the drive shaft are the special features previously filed by the applicant. Wishhei 2-268195
No. (October 4, 1989).
【０００３】この先提案に係る二連式給油ポンプ装置
は、図３に示すように、駆動軸Ｄに嵌合するロータＲの
下部に、上段側の第一偏心部Ａと下段側の第二偏心部Ｂ
とを備え、これら第一及び第二偏心部Ａ，Ｂを、駆動軸
Ｄの軸心に対して互いに９０度異なる方向に偏心させ
て、第一偏心部Ａと第一ヨークＸとで画成する第一ポン
プ室Ｐが第一吸入穴Ｌ１の開口側にのみに確保されて第
一吐出穴Ｈ１の開口側には確保されないときに、第二偏
心部Ｂと第二ヨークＹとで画成する第二ポンプ室Ｑが第
二吸入穴Ｌ２と第二吐出穴Ｈ２との各開口側に均等に確
保されるような関係にしている。As shown in FIG. 3, the dual oil supply pump device according to the prior proposal has a first eccentric portion A on the upper stage side and a second eccentric portion on the lower stage side at a lower portion of a rotor R fitted to a drive shaft D. Part B
And the first and second eccentric portions A and B are decentered in directions different from each other by 90 degrees with respect to the axis of the drive shaft D, and are defined by the first eccentric portion A and the first yoke X. When the first pump chamber P is secured only on the opening side of the first suction hole L1 and is not secured on the opening side of the first discharge hole H1, the second eccentric portion B and the second yoke Y define the first pump chamber P. The second pump chamber Q is provided so as to be evenly secured on each opening side of the second suction hole L2 and the second discharge hole H2.
【０００４】[0004]
【発明が解決しようとする課題】しかし、以上のよう
に、二つの偏心部Ａ，Ｂを互いに９０度異なる方向に偏
心させていたのでは、該各偏心部Ａ，Ｂの加工が困難に
なるし、又、第一偏心部Ａに開口する第一吸入穴Ｌ１と
第二偏心部Ｂに開口する第二吸入穴Ｌ２とが相互に９０
度ずれ、同様に第一吐出穴Ｈ１と第二吐出穴Ｈ２とが相
互に９０度ずれて、結局ロータＲの外周部まわりの４方
向に横穴を開口する必要が生じ、更に、ロータＲ内のス
ペース的な制約とも相俟って、軸方向に延びる吸入軸穴
や吐出軸穴を側方に開放する各横穴が各偏心部Ａ，Ｂの
半径方向に合致せず、これら各横穴を各偏心部Ａ，Ｂの
外面から斜めに形成する必要が生じ、全体として、加工
が困難になる問題がある。However, as described above, if the two eccentric portions A and B are eccentric in directions different from each other by 90 degrees, it becomes difficult to process the eccentric portions A and B. In addition, the first suction hole L1 opened in the first eccentric portion A and the second suction hole L2 opened in the second eccentric portion B are mutually 90 degrees.
Similarly, the first ejection hole H1 and the second ejection hole H2 deviate from each other by 90 degrees, and eventually it becomes necessary to open lateral holes in four directions around the outer peripheral portion of the rotor R. In combination with space restrictions, the lateral holes that open the suction shaft hole and the discharge shaft hole that extend in the axial direction to the side do not match the radial directions of the eccentric parts A and B, and the lateral holes are eccentric. Since it is necessary to form the parts A and B obliquely from the outer surface, there is a problem that the processing becomes difficult as a whole.
【０００５】本発明の主な目的は、二つの偏心部の偏心
方向並びに油穴の構成を工夫することにより、ロータ部
分の加工性を向上できる二連式給油ポンプ装置を提供す
る点にある。A main object of the present invention is to provide a dual oil pump system which can improve the workability of the rotor portion by devising the eccentric directions of the two eccentric portions and the structure of the oil holes.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明では上記
主目的を達成するため、第一に、駆動軸９に嵌合するボ
ス部３０と該ボス部３０の下部に並設する上段側の第一
偏心部１及び下段側の第二偏心部２をもつロータ３と、
前記各偏心部１，２の外周部に嵌合されて第一及び第二
ポンプ室１０，２０を画成する第一及び第二ヨーク４，
５とを備え、前記駆動軸９の外部に設ける第一給油通路
９１と前記駆動軸９の内部に設ける第二給油通路９２と
に各々油を汲上げる二連式給油ポンプ装置において、前
記第一及び第二偏心部１，２を、前記駆動軸９の軸心に
対して同一方向に偏心させると共に、前記ロータ３の内
部に設ける吸入軸穴６と前記各ポンプ室１０，２０との
間を、前記各偏心部１，２の半径方向に合致する第一及
び第二吸入横穴６１，６２を介して連通させる一方、前
記ロータ３の内部外周側に設け且つ前記第一吸入通路９
１に連通する第一吐出軸穴７１と、前記第一ポンプ室１
０との間を、前記第一偏心部１の半径方向に合致する第
一吐出横穴８１を介して連通させ、更に、前記ロータ３
の内部中心側に設け且つ前記第二給油通路９２に連通す
る第二吐出軸穴７２と、前記第二ポンプ室２０との間
を、前記第二偏心部２の半径方向に合致する第二吐出横
穴８２を介して連通させた。In order to achieve the above-mentioned main object, the present invention firstly proposes a boss portion 30 fitted to the drive shaft 9 and an upper stage side provided in parallel with the lower portion of the boss portion 30. A rotor 3 having a first eccentric part 1 and a second eccentric part 2 on the lower stage side;
First and second yokes 4, which are fitted to the outer peripheral portions of the eccentric portions 1 and 2 to define the first and second pump chambers 10 and 20, respectively.
And a second oil supply passage 91 provided outside the drive shaft 9 and a second oil supply passage 92 provided inside the drive shaft 9, respectively. And the second eccentric parts 1 and 2 are eccentric in the same direction with respect to the shaft center of the drive shaft 9, and the suction shaft hole 6 provided inside the rotor 3 and the pump chambers 10 and 20 are connected to each other. , The first and second suction lateral holes 61, 62 which are aligned in the radial direction of the eccentric parts 1, 2 and communicate with each other, and are provided on the inner outer peripheral side of the rotor 3 and the first suction passage 9
1 and a first discharge shaft hole 71 communicating with the first pump chamber 1
0 is made to communicate with each other through a first discharge lateral hole 81 that matches the radial direction of the first eccentric portion 1, and the rotor 3 is further connected.
The second discharge shaft hole 72 provided on the inner center side of the second communication passage and communicating with the second oil supply passage 92, and the second pump chamber 20 in the radial direction of the second eccentric portion 2. Communication was performed through the lateral hole 82.
【０００７】第二に、二つの給油通路９１，９２への油
の受け渡し部分の構造をも簡易化するため、上記第一の
手段において、ボス部３０の上部中心部に突起３０ａを
設けると共に、駆動軸９における前記ボス部３０の嵌合
穴９０の底部に段部９０ａを設けて、前記ボス部３０の
嵌合穴９０への圧入嵌合により前記突起３０ａと段部９
０ａとの間を圧接させて、前記突起３０ａの外周部まわ
りに第一給油通路９１と連通し且つ第二給油通路９２と
区画する環状室３０ｂを設ける一方、前記環状室３０ｂ
に第一吐出軸穴７１を、又、前記突起３０ａの上端に第
二吐出軸穴７２をそれぞれ開口した。Secondly, in order to simplify the structure of the oil transfer portion to the two oil supply passages 91 and 92, the protrusion 30a is provided at the center of the upper portion of the boss portion 30 in the above first means. A step portion 90a is provided at the bottom of the fitting hole 90 of the boss portion 30 of the drive shaft 9, and the protrusion 30a and the step portion 9 are formed by press-fitting the boss portion 30 into the fitting hole 90.
The annular chamber 30b is provided around the outer periphery of the protrusion 30a by pressure contact with the first oil supply passage 91 and the second oil supply passage 92.
A first discharge shaft hole 71 and a second discharge shaft hole 72 are formed at the upper ends of the protrusions 30a.
【０００８】第三に、駆動軸９内の第二給油通路９２へ
の汲上げ油量が適正になるようにするため、上記第二の
手段において、突起３０ａと段部９０ａとの圧接部に間
座９０ｂを介在させて、この間座９０ｂの中心部に、第
二吐出軸穴７２から第二給油通路９２に開放する油量を
規制する規制穴９０ｃを開口した。Thirdly, in order to make the amount of oil pumped up to the second oil supply passage 92 in the drive shaft 9 appropriate, in the second means, the pressure contact portion between the projection 30a and the step portion 90a is connected. A restriction hole 90c for restricting the amount of oil released from the second discharge shaft hole 72 to the second oil supply passage 92 is opened in the center of the spacer 90b with the spacer 90b interposed.
【０００９】[0009]
【作用】上記第一の手段により、第一及び第二偏心部
１，２を同一方向に偏心させることにより、これら各偏
心部１，２の形成が容易になり、又、このように各偏心
部１，２の偏心方向を同一にすることにより、第一吸入
横穴６１と第二吸入横穴６２とが同方向に開口し、か
つ、第一吐出横穴８１と第二吐出横穴８２とが同方向に
開口し、横穴の加工箇所がロータ３の円周上の２箇所の
みにすることができ、更に、これら各横穴６１，６２，
８１，８２は各偏心部１，２の半径方向に合致させて設
けているから該各横穴の加工も容易に行えるのである。By the first means, the first and second eccentric parts 1 and 2 are eccentric in the same direction, whereby the formation of the eccentric parts 1 and 2 is facilitated and the eccentric parts are formed in this manner. By making the eccentric directions of the parts 1 and 2 the same, the first suction lateral hole 61 and the second suction lateral hole 62 are opened in the same direction, and the first discharge lateral hole 81 and the second discharge lateral hole 82 are in the same direction. The horizontal holes can be machined at only two positions on the circumference of the rotor 3, and the horizontal holes 61, 62,
Since 81 and 82 are provided so as to match with the radial directions of the eccentric parts 1 and 2, the lateral holes can be easily machined.
【００１０】上記第二の手段により、ロータ３のボス部
３０を駆動軸９の嵌合穴９０に圧入するだけで、第一給
油通路９１に連通する環状室３０ｂと第二給油通路９２
側との間のシールが簡易に行え、これら第一給油通路９
１と第二給油通路９２への油の受け渡し部分の構造を簡
易化することができる。By the second means, the boss portion 30 of the rotor 3 is simply press-fitted into the fitting hole 90 of the drive shaft 9, and the annular chamber 30b communicating with the first oil supply passage 91 and the second oil supply passage 92 are connected.
The first side oil supply passage 9 can be easily sealed with the side.
It is possible to simplify the structure of the portion for delivering the oil to the first and second oil supply passages 92.
【００１１】上記第三の手段により、規制穴９０ｃで第
二給油通路９２への開放油量が適正量とされ、第二給油
通路９２への汲上げ油量が過剰になるのを防止すること
ができる。By the above-mentioned third means, it is possible to prevent the amount of oil released to the second oil supply passage 92 from being made appropriate in the restriction hole 90c and prevent the amount of pumped oil to be supplied to the second oil supply passage 92 from becoming excessive. You can
【００１２】[0012]
【実施例】図１に示すものは、スクロール圧縮機におけ
る駆動軸９の下端部に圧入部３１を介して圧入嵌合する
ボス部３０をもち、該ボス部３０の下方に位置する鍔部
３２の下部に上段側の第一偏心部１と下段側の第二偏心
部２とを並設したロータ３と、前記各偏心部１，２の外
周部に仕切板４５を挟んで上下に嵌合され、第一及び第
二ポンプ室１０，２０を画成する長穴４０，５０をもつ
第一及び第二ヨーク４，５とを備え、前記ロータ３の下
面を駆動軸９の下部を支持する下部ハウジング９３に取
付けるスラストプレート９４に支持すると共に、前記各
ヨーク４，５における長穴４０，５０の短軸方向に延び
るキー（図示せず）を前記下部ハウジング９３の下部に
設ける摺動溝内に摺動させ、前記駆動軸９の回転に伴
い、該駆動軸９の外部に設ける第一給油通路９１と前記
駆動軸９の内部に設ける第二給油通路９２とに各々油を
汲上げるようにした二連式給油ポンプ装置である。1 shows a scroll compressor having a boss portion 30 which is press-fitted into a lower end portion of a drive shaft 9 through a press-fitting portion 31, and a collar portion 32 located below the boss portion 30. A rotor 3 in which a first eccentric portion 1 on the upper stage side and a second eccentric portion 2 on the lower stage side are arranged side by side in the lower part of the above, and a partition plate 45 is sandwiched between the outer peripheral portions of the eccentric portions 1 and 2 and fitted vertically And the first and second yokes 4, 5 having elongated holes 40, 50 that define the first and second pump chambers 10, 20, respectively, and the lower surface of the rotor 3 supports the lower portion of the drive shaft 9. In a sliding groove, which is supported by a thrust plate 94 attached to the lower housing 93, and provided with a key (not shown) extending in the minor axis direction of the elongated holes 40, 50 in each of the yokes 4, 5 in the lower portion of the lower housing 93. The drive shaft 9 as the drive shaft 9 rotates. It is a dual-type oil pump apparatus in which the respective oil pumped gel so on and the second oil supply passage 92 provided inside the first oil supply passage 91 and the drive shaft 9 provided on.
【００１３】尚、第一給油通路９１に汲上げた油は、ス
クロール渦巻体間に画成する圧縮室内に供給し、又、第
二給油通路９２に汲上げた油は、駆動軸９の上部軸受部
分等の供給するようにしている。The oil pumped up into the first oil supply passage 91 is supplied into the compression chamber defined between the scroll spirals, and the oil pumped up into the second oil supply passage 92 is located above the drive shaft 9. The bearing parts are supplied.
【００１４】以上の構成で、図２にも明示するように、
前記第一及び第二偏心部１，２の軸心Ｅを、前記駆動軸
９の軸心Ｏに対して同一方向に偏心させる。With the above configuration, as clearly shown in FIG.
The axis E of the first and second eccentric portions 1 and 2 is eccentric to the axis O of the drive shaft 9 in the same direction.
【００１５】そして、前記ロータ３の内部に設け且つ該
ロータ３の下面においてスラストプレート９４に設ける
吸入口９５に符合する吸入軸穴６と、前記各ポンプ室１
０，２０との間を、前記各偏心部１，２の半径方向に合
致する第一及び第二吸入横穴６１，６２を介して連通さ
せる。The suction shaft hole 6 provided inside the rotor 3 and corresponding to the suction port 95 provided on the thrust plate 94 on the lower surface of the rotor 3 and the pump chambers 1
0 and 20 are communicated with each other through first and second suction lateral holes 61 and 62 that match the radial directions of the eccentric portions 1 and 2.
【００１６】又、前記ロータ３の内部外周側に設け且つ
後述するように前記第一吸入通路９１に連通する第一吐
出軸穴７１と、前記第一ポンプ室１０との間を、前記第
一偏心部１の半径方向に合致する第一吐出横穴８１を介
して連通させる。Further, between the first pump chamber 10 and the first discharge shaft hole 71 which is provided on the inner peripheral side of the rotor 3 and communicates with the first suction passage 91 as described later, The eccentric portion 1 is made to communicate with each other through the first discharge lateral hole 81 that matches the radial direction.
【００１７】更に、前記ロータ３の内部中心側に設け且
つ前記第二給油通路９２に連通する第二吐出軸穴７２
と、前記第二ポンプ室２０との間を、前記第二偏心部２
の半径方向に合致する第二吐出横穴８２を介して連通さ
せる。Further, a second discharge shaft hole 72 is provided on the inner center side of the rotor 3 and communicates with the second oil supply passage 92.
Between the second pump chamber 20 and the second eccentric portion 2
Through the second discharge lateral hole 82 that coincides with the radial direction of.
【００１８】こうして、第一及び第二偏心部１，２を同
一方向に偏心させることにより、これら各偏心部１，２
を同心円上に配置できて、これら各偏心部１，２の形成
が容易になり、又、このように各偏心部１，２の偏心方
向を同一にすることにより、第一吸入横穴６１と第二吸
入横穴６２とが同方向に開口し、かつ、第一吐出横穴８
１と第二吐出横穴８２とが同方向に開口し、横穴の加工
箇所がロータ３の円周上の２箇所のみにすることがで
き、更に、これら各横穴６１，６２，８１，８２は各偏
心部１，２の半径方向に合致させて設けているから該各
横穴の加工も容易に行えるのである。By thus eccentricizing the first and second eccentric parts 1 and 2 in the same direction, the eccentric parts 1 and 2 are eccentric.
Can be arranged on a concentric circle to facilitate the formation of the eccentric portions 1 and 2, and by making the eccentric directions of the eccentric portions 1 and 2 the same, the first suction lateral hole 61 and The second suction lateral hole 62 opens in the same direction, and the first discharge lateral hole 8
The first and second discharge lateral holes 82 are opened in the same direction, and the lateral holes can be machined at only two positions on the circumference of the rotor 3. Furthermore, each of the lateral holes 61, 62, 81, 82 is Since the eccentric portions 1 and 2 are provided so as to match with each other in the radial direction, the respective lateral holes can be easily processed.
【００１９】又、以上の構成で、ボス部３０の上部中心
部に突起３０ａを設けると共に、駆動軸９における前記
ボス部３０の嵌合穴９０の底部に段部９０ａを設け、か
つ、前記突起３０ａと段部９０ａとの間に円板状の間座
９０ｂを介在させて、前記ボス部３０の嵌合穴９０への
圧入嵌合により前記突起３０ａと段部９０ａとの間を中
間に間座９０ｂを挟んで圧接させ、これにより、前記突
起３０ａの外周部まわりに第二給油通路９２と区画する
環状室３０ｂを設け、この環状室３０ｂを駆動軸９の径
方向に設ける横穴９６と、駆動軸９と下部軸受メタル９
７との間に形成する環状溝９８及び径方向の連通穴９９
を介して前記第一給油通路９１に連通する一方、前記環
状室３０ｂに第一吐出軸穴７１を、又、前記突起３０ａ
の上端に第二吐出軸穴７２をそれぞれ開口する。Further, with the above construction, the protrusion 30a is provided at the center of the upper portion of the boss portion 30, and the step portion 90a is provided at the bottom of the fitting hole 90 of the boss portion 30 of the drive shaft 9, and the protrusion is provided. A disk-shaped spacer 90b is interposed between 30a and the stepped portion 90a, and by press-fitting the boss portion 30 into the fitting hole 90, an intermediate space is provided between the protrusion 30a and the stepped portion 90a. An annular chamber 30b is provided around the outer periphery of the projection 30a so as to be partitioned from the second oil supply passage 92, and a lateral hole 96 is provided in the radial direction of the drive shaft 9 so as to press the seat 90b. Drive shaft 9 and lower bearing metal 9
7, an annular groove 98 and a radial communicating hole 99 formed between
While communicating with the first oil supply passage 91 via the first discharge shaft hole 71 in the annular chamber 30b and the projection 30a.
A second discharge shaft hole 72 is opened at the upper end of each.
【００２０】尚、突起３０ａと段部９０ａとの圧接部の
中間に間座９０ｂを介在させたが、突起３０ａの上面を
段部９０ａに直接当接させるようにしてもよい。Although the spacer 90b is interposed in the middle of the pressure contact portion between the projection 30a and the step portion 90a, the upper surface of the projection 30a may be brought into direct contact with the step portion 90a.
【００２１】これにより、ロータ３のボス部３０を駆動
軸９の嵌合穴９０に圧入嵌合するだけで、第一給油通路
９１に連通する環状室３０ｂと第二給油通路９２側との
間のシールが簡易に行え、これら第一給油通路９１と第
二給油通路９２への油の受け渡し部分の構造を簡易化す
ることができる。As a result, by simply press-fitting the boss portion 30 of the rotor 3 into the fitting hole 90 of the drive shaft 9, between the annular chamber 30b communicating with the first oil supply passage 91 and the second oil supply passage 92 side. Can be easily sealed, and the structure of the oil delivery portion to the first oil supply passage 91 and the second oil supply passage 92 can be simplified.
【００２２】更に、前記突起３０ａと段部９０ａとの圧
接部分に介在させた前記間座９０ｂの中心部に、第二吐
出軸穴７２から第二給油通路９２への供給油量を規制す
る規制穴９０ｃを開口する。Further, at the central portion of the spacer 90b interposed in the pressure contact portion between the protrusion 30a and the step portion 90a, the regulation for regulating the amount of oil supplied from the second discharge shaft hole 72 to the second oil supply passage 92 is regulated. The hole 90c is opened.
【００２３】これにより、規制穴９０ｃで第二給油通路
９２への開放油量が適正量とされ、第二給油通路９２へ
の汲上げ油量が過剰になるのを防止することができる。As a result, it is possible to prevent the amount of oil released to the second oil supply passage 92 from the restriction hole 90c to be an appropriate amount and prevent the amount of pumped oil to the second oil supply passage 92 from becoming excessive.
【００２４】[0024]
【発明の効果】以上、請求項１記載の発明によれば、第
一及び第二偏心部１，２の形成が容易になると共に、各
吸入横穴６１，６２及び吐出横穴８１，８２の形成も容
易になり、ロータ３の加工性を向上することができる。As described above, according to the invention described in claim 1, the first and second eccentric portions 1 and 2 can be easily formed, and the suction lateral holes 61 and 62 and the discharge lateral holes 81 and 82 can be formed. It becomes easier and the workability of the rotor 3 can be improved.
【００２５】請求項２記載の発明によれば、第一給油通
路９１と第二給油通路９２への油の受け渡し部分の構造
をも簡易化することができる。According to the second aspect of the invention, it is possible to simplify the structure of the oil delivery portion to the first oil supply passage 91 and the second oil supply passage 92.
【００２６】請求項３記載の発明によれば、第二給油通
路９２への汲上げ油量が過剰になるのを防止することも
できる。According to the third aspect of the present invention, it is possible to prevent the amount of pumping oil into the second oil supply passage 92 from becoming excessive.
【図１】本発明に係る二連式給油ポンプ装置の断面図。FIG. 1 is a cross-sectional view of a dual oil supply pump device according to the present invention.
【図２】同給油ポンプ装置におけるロータの拡大底面
図。FIG. 2 is an enlarged bottom view of a rotor in the oil supply pump device.
【図３】先行技術に係る二連式給油ポンプ装置の断面
図。FIG. 3 is a cross-sectional view of a dual oil supply pump device according to the prior art.
１ 第一偏心部 ２ 第二偏心部 ３ ロータ ４ 第一ヨーク ５ 第二ヨーク ６ 吸入軸穴 ９ 駆動軸 １０ 第一ポンプ室 ２０ 第二ポンプ室 ３０ ボス部 ６１ 第一吸入横穴 ６２ 第二吸入横穴 ７１ 第一吐出軸穴 ７２ 第二吐出軸穴 ８１ 第一吐出横穴 ８２ 第二吐出横穴 ９１ 第一給油通路 ９２ 第二給油通路 ９０ 嵌合穴 ３０ａ 突起 ３０ｂ 環状室 ９０ａ 段部 ９０ｂ 間座 ９０ｃ 規制穴 1 1st eccentric part 2 2nd eccentric part 3 rotor 4 1st yoke 5 2nd yoke 6 suction shaft hole 9 drive shaft 10 1st pump chamber 20 2nd pump chamber 30 boss part 61 1st suction lateral hole 62 2nd suction lateral hole 71 1st discharge shaft hole 72 2nd discharge shaft hole 81 1st discharge side hole 82 2nd discharge side hole 91 1st oil supply passage 92 2nd oil supply passage 90 Fitting hole 30a Protrusion 30b Annular chamber 90a Step 90b Spacer 90c Restriction hole
Claims (3)
３０の下部に並設する上段側の第一偏心部１及び下段側
の第二偏心部２をもつロータ３と、前記各偏心部１，２
の外周部に嵌合されて第一及び第二ポンプ室１０，２０
を画成する第一及び第二ヨーク４，５とを備え、前記駆
動軸９の外部に設ける第一給油通路９１と前記駆動軸９
の内部に設ける第二給油通路９２とに各々油を汲上げる
二連式給油ポンプ装置において、前記第一及び第二偏心
部１，２を、前記駆動軸９の軸心に対して同一方向に偏
心させると共に、前記ロータ３の内部に設ける吸入軸穴
６と前記各ポンプ室１０，２０との間を、前記各偏心部
１，２の半径方向に合致する第一及び第二吸入横穴６
１，６２を介して連通させる一方、前記ロータ３の内部
外周側に設け且つ前記第一吸入通路９１に連通する第一
吐出軸穴７１と、前記第一ポンプ室１０との間を、前記
第一偏心部１の半径方向に合致する第一吐出横穴８１を
介して連通させ、更に、前記ロータ３の内部中心側に設
け且つ前記第二給油通路９２に連通する第二吐出軸穴７
２と、前記第二ポンプ室２０との間を、前記第二偏心部
２の半径方向に合致する第二吐出横穴８２を介して連通
させていることを特徴とする二連式給油ポンプ装置。1. A rotor 3 having a boss portion 30 fitted to a drive shaft 9, a first eccentric portion 1 on the upper stage side and a second eccentric portion 2 on the lower stage side arranged in parallel at the lower portion of the boss portion 30, and Each eccentric part 1,2
Is fitted to the outer peripheral part of the first and second pump chambers 10, 20
And a first oil supply passage 91 provided outside the drive shaft 9 and the drive shaft 9.
In a dual-type oil supply pump device that pumps oil respectively to a second oil supply passage 92 provided inside, the first and second eccentric parts 1 and 2 are arranged in the same direction with respect to the axis of the drive shaft 9. The first and second suction lateral holes 6 are eccentric and match the radial direction of the eccentric parts 1 and 2 between the suction shaft hole 6 provided inside the rotor 3 and the pump chambers 10 and 20.
The first discharge shaft hole 71, which is provided on the inner peripheral side of the rotor 3 and communicates with the first suction passage 91, and the first pump chamber 10 are connected to each other through the first pump chamber 10. The second discharge shaft hole 7 that is communicated through the first discharge lateral hole 81 that matches the radial direction of the one eccentric portion 1 and that is further provided on the inner center side of the rotor 3 and that communicates with the second oil supply passage 92.
2 and the second pump chamber 20 are communicated with each other through a second discharge lateral hole 82 that coincides with the radial direction of the second eccentric portion 2, and a dual-type oil supply pump device.
けると共に、駆動軸９における前記ボス部３０の嵌合穴
９０の底部に段部９０ａを設けて、前記ボス部３０の嵌
合穴９０への圧入嵌合により前記突起３０ａと段部９０
ａとの間を圧接させて、前記突起３０ａの外周部まわり
に第一給油通路９１と連通し且つ第二給油通路９２と区
画する環状室３０ｂを設ける一方、前記環状室３０ｂに
第一吐出軸穴７１を、又、前記突起３０ａの上端に第二
吐出軸穴７２をそれぞれ開口している請求項１記載の二
連式給油ポンプ装置。2. A protrusion 30a is provided at the center of the upper portion of the boss portion 30, and a step portion 90a is provided at the bottom of the fitting hole 90 of the boss portion 30 in the drive shaft 9, so that the fitting hole of the boss portion 30 is provided. The projection 30a and the step 90
An annular chamber 30b is provided around the outer periphery of the protrusion 30a by pressure contact with a, and communicates with the first oil supply passage 91 and separates from the second oil supply passage 92, while the annular chamber 30b is provided with a first discharge shaft. 2. The dual oil supply pump device according to claim 1, wherein a hole 71 and a second discharge shaft hole 72 are opened at the upper end of the protrusion 30a.
９０ｂを介在させて、この間座９０ｂの中心部に、第二
吐出軸穴７２から第二給油通路９２に開放する油量を規
制する規制穴９０ｃを開口している請求項２記載の二連
式給油ポンプ装置。3. A spacer 90b is interposed between the projection 30a and the step portion 90a, and the amount of oil released from the second discharge shaft hole 72 to the second oil supply passage 92 is provided at the center of the spacer 90b. The double-type oil supply pump device according to claim 2, wherein a restriction hole 90c for restricting is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3208101A JP3024290B2 (en) | 1991-08-20 | 1991-08-20 | Dual oil pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3208101A JP3024290B2 (en) | 1991-08-20 | 1991-08-20 | Dual oil pump system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0544676A true JPH0544676A (en) | 1993-02-23 |
| JP3024290B2 JP3024290B2 (en) | 2000-03-21 |
Family
ID=16550655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3208101A Expired - Fee Related JP3024290B2 (en) | 1991-08-20 | 1991-08-20 | Dual oil pump system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3024290B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100751152B1 (en) * | 2005-11-30 | 2007-08-22 | 엘지전자 주식회사 | Oil feeding structure for scroll compressor |
-
1991
- 1991-08-20 JP JP3208101A patent/JP3024290B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100751152B1 (en) * | 2005-11-30 | 2007-08-22 | 엘지전자 주식회사 | Oil feeding structure for scroll compressor |
| US7717688B2 (en) * | 2005-11-30 | 2010-05-18 | Lg Electronics Inc. | Oil pump for a compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3024290B2 (en) | 2000-03-21 |
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