JPH0128243Y2 - - Google Patents

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Publication number
JPH0128243Y2
JPH0128243Y2 JP3381984U JP3381984U JPH0128243Y2 JP H0128243 Y2 JPH0128243 Y2 JP H0128243Y2 JP 3381984 U JP3381984 U JP 3381984U JP 3381984 U JP3381984 U JP 3381984U JP H0128243 Y2 JPH0128243 Y2 JP H0128243Y2
Authority
JP
Japan
Prior art keywords
eccentric shaft
diameter portion
eccentric
large diameter
small diameter
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.)
Expired
Application number
JP3381984U
Other languages
Japanese (ja)
Other versions
JPS60145201U (en
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 filed Critical
Priority to JP3381984U priority Critical patent/JPS60145201U/en
Publication of JPS60145201U publication Critical patent/JPS60145201U/en
Application granted granted Critical
Publication of JPH0128243Y2 publication Critical patent/JPH0128243Y2/ja
Granted legal-status Critical Current

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  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は、少なくとも3個以上の気筒を有する
多気筒ロータリピストンエンジンの偏心軸に関す
るものである。
[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an eccentric shaft for a multi-cylinder rotary piston engine having at least three or more cylinders.

(従来技術) 多気筒ロータリピストンエンジンでは、気筒数
が3個以上になると偏心軸も3個以上となり、一
本の偏心軸に3個以上の偏心部を形成したのでは
組立が困難であるという組立上の理由から、その
偏心軸を少なくとも2個以上に分割して組立を行
うようにすることが提案されている(実公昭55−
14723号公報参照)。
(Prior art) In a multi-cylinder rotary piston engine, when the number of cylinders increases to three or more, the number of eccentric shafts also increases to three or more, and it is said that assembly is difficult if three or more eccentric parts are formed on one eccentric shaft. For assembly reasons, it has been proposed that the eccentric shaft be divided into at least two parts for assembly (Utility Model Act 1973-
(See Publication No. 14723).

このような偏心軸は、2個の偏心部を有する第
1偏心軸と1個の偏心部を有する第2偏心軸とに
分割し、第1偏心軸の先端部と第2偏心軸の先端
部とに互いに嵌合当接させ、第2偏心軸には該偏
心軸に開口した貫通孔にボルトを嵌挿すると共に
第1偏心軸の先端部にこのボルトに螺合するネジ
部を形成し、このボルトによつて第1偏心軸と第
2偏心軸とを結合する構成としているが、第1偏
心軸と第2偏心軸との結合がその先端部同志で行
われるいわゆる片持式の構成であるがために、エ
ンジン振動により第2偏心軸のうち第1偏心軸の
先端部に当接する先端部から遠い側の端部が半径
方向に大きく振れて、その部分に固定されたギヤ
がその外方に位置するロータのインナギヤに繰返
し当たり、インナギヤが破損する虞れがあつた。
Such an eccentric shaft is divided into a first eccentric shaft having two eccentric parts and a second eccentric shaft having one eccentric part, and the tip of the first eccentric shaft and the tip of the second eccentric shaft are separated. and the second eccentric shaft is fitted with a bolt into a through hole opened in the eccentric shaft, and a threaded portion is formed at the tip of the first eccentric shaft to be screwed into the bolt, This bolt is used to connect the first eccentric shaft and the second eccentric shaft, but it is a so-called cantilever type construction in which the first eccentric shaft and the second eccentric shaft are connected at their tips. Because of this, engine vibration causes the end of the second eccentric shaft that is far from the tip that contacts the tip of the first eccentric shaft to swing significantly in the radial direction, causing the gear fixed to that part to move outward. There was a risk that the inner gear of the rotor located on the other side would be damaged due to repeated collisions.

(考案の目的) 本考案はかかる点に鑑みてなされたもので、エ
ンジン振動による第1偏心軸に対する第2偏心軸
の半径方向の振れを防止した多気筒ロータリピス
トンエンジンの偏心軸を提供することを目的とす
る。
(Purpose of the invention) The present invention has been made in view of the above points, and an object thereof is to provide an eccentric shaft for a multi-cylinder rotary piston engine that prevents the second eccentric shaft from swinging in the radial direction with respect to the first eccentric shaft due to engine vibration. With the goal.

(考案の構成) 本考案の構成は、外周に偏心部を有する大径部
と該大径部より延長された小径部とに一体に形成
するとともに、上記大径部と小径部との間に第1
傾斜面を形成してなる第1偏心軸と、外周に偏心
部を有し、上記第1偏心軸の小径部が遊嵌される
貫通孔を形成するとともに該貫通孔の大径部側に
上記第1傾斜面に当接する第2傾斜面を形成して
なる第2偏心軸と、上記第1偏心軸の小径部に嵌
合され上記第2傾斜面とは反対側における上記第
2偏心軸の端部の半径方向の移動を規制する規制
部材と、該規制部材を上記第2偏心軸の大径部方
向に押圧する締結部材とを備えたことを特徴とす
るものである。
(Structure of the invention) The structure of the invention is that a large diameter part having an eccentric part on the outer periphery and a small diameter part extending from the large diameter part are integrally formed, and a gap between the large diameter part and the small diameter part is formed. 1st
A first eccentric shaft formed with an inclined surface and an eccentric portion on the outer periphery, forming a through hole into which the small diameter portion of the first eccentric shaft is loosely fitted, and the above-mentioned portion on the large diameter side of the through hole. a second eccentric shaft formed with a second inclined surface that abuts the first inclined surface; and a second eccentric shaft that is fitted into the small diameter portion of the first eccentric shaft and is located on the opposite side of the second inclined surface. The present invention is characterized by comprising a regulating member that regulates the movement of the end portion in the radial direction, and a fastening member that presses the regulating member in the direction of the large diameter portion of the second eccentric shaft.

(実施例) 以下、本考案の実施例を図面に基づいて説明す
る。
(Example) Hereinafter, an example of the present invention will be described based on the drawings.

第1図は多気筒ロータリピストンエンジンの全
体構成を示すもので、1は多気筒(3気筒)ロー
タリピストンのエンジンエンジン本体で、端部サ
イドハウジング2,3と中間サイドハウジング
4,5とロータハウジング6〜8とを有してお
り、ロータハウジング6は端部サイドハウジング
2と中間サイドハウジング4とにより気密性を保
持されて第1気筒の作動室9を形成し、ロータハ
ウジング7は中間サイドハウジング4,5により
気密性を保持されて第2気筒の作動室10を形成
し、ロータハウジング8は端部サイドハウジング
3と中間サイドハウジング5とにより気密性を保
持されて第3気筒の作動室11を形成している。
なお、12〜20は冷却水通路である。
Figure 1 shows the overall configuration of a multi-cylinder rotary piston engine. 1 is a multi-cylinder (3-cylinder) rotary piston engine body, end side housings 2, 3, intermediate side housings 4, 5, and a rotor housing. 6 to 8, the rotor housing 6 is kept airtight by the end side housing 2 and the intermediate side housing 4 to form the working chamber 9 of the first cylinder, and the rotor housing 7 is formed by the intermediate side housing 4. 4 and 5 to form the working chamber 10 of the second cylinder, and the rotor housing 8 is kept airtight by the end side housing 3 and the intermediate side housing 5 to form the working chamber 11 of the third cylinder. is formed.
Note that 12 to 20 are cooling water passages.

各ハウジング2〜8は位置決めピン21〜23
によつて互いに位置決めされると共に、テンシヨ
ンボルト24により締付けられて結合している。
Each housing 2-8 has positioning pins 21-23
are positioned with respect to each other, and are tightened and connected by a tension bolt 24.

上記エンジン本体1には、端部サイドハウジン
グ2から端部サイドハウジング3に向かつて第1
偏心軸28が挿通されている。この第1偏心軸2
8は、その軸方向に延びる大径部29と該大径部
29より延長され該大径部29よりも小径の小径
部30とが一体に形成されており、大径部29は
端部サイドハウジング2から中間サイドハウジン
グ5まで延びる一方小径部30は中間サイドハウ
ジング5からロータハウジング8、端部サイドハ
ウジング3を経て外部に突出するように構成され
ている。大径部29には、作動室9,10に臨む
部分に偏心軸31,32がそれぞれ形成され、該
偏心部31,32にはそれぞれ三角形状のロータ
33,34が取付けられている。この第1偏心軸
28は、大径端部35にフライホイール36が取
付けられ、該フライホイール36にリングギヤ3
7が取付けられ、また、小径部30の小径端部3
8には、ネジ部39が形成されると共に、オイル
ポンプ駆動用スプロケツト、バランスウエイト等
の被取付部材40が取付けられている。
The engine body 1 has a first main body extending from the end side housing 2 to the end side housing 3.
An eccentric shaft 28 is inserted therethrough. This first eccentric shaft 2
8 is integrally formed with a large diameter part 29 extending in the axial direction and a small diameter part 30 extending from the large diameter part 29 and having a smaller diameter than the large diameter part 29, and the large diameter part 29 is formed on the end side. The small diameter portion 30 extending from the housing 2 to the intermediate side housing 5 is configured to protrude from the intermediate side housing 5 to the rotor housing 8 and the end side housing 3 to the outside. Eccentric shafts 31 and 32 are formed in the large diameter portion 29 at portions facing the working chambers 9 and 10, respectively, and triangular rotors 33 and 34 are attached to the eccentric portions 31 and 32, respectively. A flywheel 36 is attached to the large diameter end 35 of the first eccentric shaft 28, and a ring gear 3 is attached to the flywheel 36.
7 is attached, and the small diameter end 3 of the small diameter portion 30 is attached.
8 is formed with a threaded portion 39, and attached members 40 such as an oil pump driving sprocket and a balance weight are attached.

端部サイドハウジング2,3と中間サイドハウ
ジング5とには固定ギヤ41,42,43がボル
ト44によつてそれぞれ取付けられ、該固定ギヤ
41,42は第1偏心軸28の軸受けを兼用する
ようになつている。41a〜43aは各固定ギヤ
41〜43の歯部である。各ロータ33,34に
はインナギヤ47,48が取付けられ、固定ギヤ
41,42に噛合されて、インナギヤ47,48
は固定ギヤ41,42の周囲をロータ33,34
とともに遊星的に回転するようになつている。
Fixed gears 41, 42, 43 are attached to the end side housings 2, 3 and the intermediate side housing 5, respectively, by bolts 44, and the fixed gears 41, 42 also serve as bearings for the first eccentric shaft 28. It's getting old. 41a to 43a are teeth of each of the fixed gears 41 to 43. Inner gears 47, 48 are attached to each rotor 33, 34, and are meshed with fixed gears 41, 42.
The fixed gears 41 and 42 are surrounded by rotors 33 and 34.
It is designed to rotate in a planetary manner.

第1偏心軸28の小径部30には偏心部53を
有する筒状の第2偏心軸49が外嵌されている。
すなわち、第2偏心軸49はその軸方向に延びる
貫通孔50を有し、該貫通孔50に前記小径部3
0が遊嵌している。第1偏心軸28は、大径部2
9と小径部30との間に第1傾斜面としてのテー
パ部51が形成されており、このテーパ部51は
小径部30から大径部29に向かつて徐々に拡径
している。また、貫通孔50は大径部29に近い
側に第2傾斜面としてのテーパ孔52が形成さ
れ、このテーパ孔52はテーパ部51に当接して
おり、テーパ部51とテーパ孔52とは偏心部5
3の軸方向位置決め手段として機能するものであ
る。偏心部53は第3気筒の作動室11に位置
し、この偏心部53にはロータ54が取付けら
れ、該ロータ54にはインナギヤ55が固定さ
れ、該インナギヤ55が固定ギヤ43に噛合され
ている。インナギヤ55はロータ54とともに固
定ギヤ43の周囲を遊星回転するようになつてい
る。
A cylindrical second eccentric shaft 49 having an eccentric portion 53 is fitted onto the small diameter portion 30 of the first eccentric shaft 28 .
That is, the second eccentric shaft 49 has a through hole 50 extending in the axial direction, and the small diameter portion 3 is inserted into the through hole 50.
0 is loosely fitted. The first eccentric shaft 28 has a large diameter portion 2
A tapered portion 51 as a first inclined surface is formed between the small diameter portion 9 and the small diameter portion 30, and the diameter of the tapered portion 51 gradually increases from the small diameter portion 30 toward the large diameter portion 29. Further, the through hole 50 has a tapered hole 52 as a second inclined surface formed on the side closer to the large diameter portion 29, and this tapered hole 52 is in contact with the tapered portion 51, and the tapered portion 51 and the tapered hole 52 are different from each other. Eccentric part 5
This functions as the axial positioning means of No. 3. The eccentric part 53 is located in the working chamber 11 of the third cylinder, a rotor 54 is attached to the eccentric part 53, an inner gear 55 is fixed to the rotor 54, and the inner gear 55 meshes with the fixed gear 43. . The inner gear 55 and the rotor 54 rotate planetarily around the fixed gear 43.

また、第2図a,bに詳細を示すように、前記
第2偏心軸49のテーパ孔52とは反対側の端部
に、該テーパ孔52側に向つて小径となる別のテ
ーパ孔60が形成され、該テーパ孔60に、第1
偏心軸28の小径端部38に嵌合され切欠部61
aを有する環状の規制部材61のテーパ部61b
が常時当接している。しかして、この規制部材6
1が、第1偏心軸28の小径端部38に形成され
たネジ部39に螺合する締結部材としてのナツト
58によつて被取付部材40を介して小径部30
の軸方向であつてかつテーパ孔52がテーパ部5
1に接近する方向に押圧されるとともに、第2偏
心軸49の半径方向への移動が規制されるように
なつている。第2偏心軸49は小径部40に遊嵌
するようにしているため、第2偏心軸49の小径
部30への挿入が容易である。また、テーパ孔5
2の内周面には、第2偏心軸49と第1偏心軸2
8との相対回転を極力防止するために摩擦係数増
大のために、たとえば銅メツキが施されており、
テーパ部51の外周面にポーラスクロムメツキ、
イオンプレーテイング方法によるセラミツクコー
テイングが施されている。
Further, as shown in detail in FIGS. 2a and 2b, at the end of the second eccentric shaft 49 opposite to the tapered hole 52, another tapered hole 60 whose diameter becomes smaller toward the tapered hole 52 side is provided. is formed in the tapered hole 60, and a first hole is formed in the tapered hole 60.
The notch 61 is fitted into the small diameter end 38 of the eccentric shaft 28.
Tapered portion 61b of annular regulating member 61 having a
is in constant contact. However, this regulating member 6
1 is connected to the small diameter portion 30 via the attached member 40 by a nut 58 as a fastening member that is screwed into the threaded portion 39 formed on the small diameter end 38 of the first eccentric shaft 28.
and the tapered hole 52 is in the axial direction of the tapered part 5
1, and movement of the second eccentric shaft 49 in the radial direction is restricted. Since the second eccentric shaft 49 is loosely fitted into the small diameter portion 40, it is easy to insert the second eccentric shaft 49 into the small diameter portion 30. In addition, the taper hole 5
A second eccentric shaft 49 and a first eccentric shaft 2 are provided on the inner peripheral surface of the shaft 2.
In order to prevent relative rotation with 8 as much as possible, copper plating is applied to increase the coefficient of friction.
Porous chrome plating is applied to the outer peripheral surface of the tapered portion 51.
Ceramic coating is applied using the ion plating method.

なお、62,63は第1偏心軸28についての
ベアリング、64は第2偏心軸49についてのベ
アリング、65は第1偏心軸28の各偏心部3
1,32の対して第2偏心軸49の偏心部53の
回転方向の位置決めを行うためのキー、66は被
取付部材40の回転方向の位置決めを行うための
キー、67は位置決め用のピンである。
Note that 62 and 63 are bearings for the first eccentric shaft 28, 64 are bearings for the second eccentric shaft 49, and 65 are each eccentric portion 3 of the first eccentric shaft 28.
1 and 32, a key for positioning the eccentric portion 53 of the second eccentric shaft 49 in the rotational direction, 66 a key for positioning the attached member 40 in the rotational direction, and 67 a positioning pin. be.

上記実施例では、規制部材61がテーパ部61
bを有する断面略台形状に構成しているが、第3
図に示すように、断面円形状の規制部材70とす
ることもできる。70aは切欠部である。
In the above embodiment, the regulating member 61 is
It is configured to have a substantially trapezoidal cross section with b.
As shown in the figure, the regulating member 70 may have a circular cross section. 70a is a notch.

また、上記実施例においては、被取付部材40
および規制部材61または70を介してナツト5
8とネジ部39との協働作用によつて第2偏心軸
49を第1偏心軸28の大径部29の側に押圧す
るようにしているが、被取付部材40のかわり
に、ナツト58と規制部材61または70との間
にカラーを介在させ、このカラーを介して押圧す
る構成とすることもできる。また、被取付部材4
0を省きナツト58により規制部材61または7
0を直接押圧するようにすることもできる。
Further, in the above embodiment, the attached member 40
and the nut 5 via the regulating member 61 or 70.
8 and the threaded portion 39 to press the second eccentric shaft 49 toward the large diameter portion 29 of the first eccentric shaft 28 . A collar may be interposed between the control member 61 or 70 and the pressure may be pressed through the collar. In addition, the attached member 4
0 is omitted and the regulating member 61 or 7 is replaced by the nut 58.
It is also possible to press 0 directly.

さらに、上記実施例では3気筒ロータリピスト
ンエンジンに本考案を適用した例について説明し
たが、4気筒以上のものにも本考案を適用できる
のは言うまでもない。その場合、上記実施例では
偏心軸を第1偏心軸と第2偏心軸との2分割構成
としているが、4気筒以上の多気筒ロータリピス
トンエンジンの場合には、第2偏心軸に2個の偏
心部を設けたり、あるいは第2偏心軸を2個にし
てこれを第1偏心軸の小径部に複数個支持させる
構成とすることもできる。
Further, in the above embodiment, an example in which the present invention is applied to a three-cylinder rotary piston engine has been described, but it goes without saying that the present invention can also be applied to engines with four or more cylinders. In that case, in the above embodiment, the eccentric shaft is divided into two, the first eccentric shaft and the second eccentric shaft, but in the case of a multi-cylinder rotary piston engine with four or more cylinders, the second eccentric shaft has two eccentric shafts. It is also possible to provide an eccentric portion, or to provide a configuration in which two second eccentric shafts are provided and a plurality of them are supported by the small diameter portion of the first eccentric shaft.

(考案の効果) 本考案は上記のように構成したから、エンジン
振動による第1偏心軸に対する第2偏心軸の半径
方向の振れを抑制でき、ロータのインナギヤの破
損を防止できる。
(Effects of the Invention) Since the present invention is configured as described above, it is possible to suppress the vibration of the second eccentric shaft in the radial direction with respect to the first eccentric shaft due to engine vibration, and it is possible to prevent damage to the inner gear of the rotor.

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

図面は本考案の実施例を示し、第1図は多気筒
ロータリピストンエンジンの全体構成図、第2図
aは第1図の要部詳細図、第2図bは規制部材の
正面図、第3図は変形例についての第2図aと同
様の図である。 1……エンジン本体、28……第1偏心軸、2
9……大径部、30……小径部、31,32,5
3……偏心部、47,48,55……インナギ
ヤ、49……第2偏心軸、50……貫通孔、51
……テーパ部、52,60……テーパ孔、61,
70……規制部材。
The drawings show an embodiment of the present invention; FIG. 1 is an overall configuration diagram of a multi-cylinder rotary piston engine, FIG. 2a is a detailed view of the main part of FIG. 1, FIG. FIG. 3 is a diagram similar to FIG. 2a for a modified example. 1... Engine body, 28... First eccentric shaft, 2
9... Large diameter part, 30... Small diameter part, 31, 32, 5
3... Eccentric part, 47, 48, 55... Inner gear, 49... Second eccentric shaft, 50... Through hole, 51
... Tapered part, 52, 60 ... Tapered hole, 61,
70...Regulation member.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外周に偏心部を有する大径部と該大径部より延
長され該大径部よりも小径の小径部とを一体に形
成するとともに、上記大径部と小径部との間に第
1傾斜面を形成してなる第1偏心軸と、外周に偏
心部を有し、上記第1偏心軸の小径部が遊嵌され
る貫通孔を形成するとともに該貫通孔の大径部側
に上記第1傾斜面に当接する第2傾斜面を有する
第2偏心軸と、上記第1偏心軸の少径部に嵌合さ
れ上記第2傾斜面とは反対側の上記第2偏心軸の
端部の半径方向の移動を規制する規制部材と、該
規制部材を上記第2偏心軸の大径部方向に押圧す
る締結部材とを備えたことを特徴とする多気筒ロ
ータリピストンエンジンの偏心軸。
A large diameter portion having an eccentric portion on the outer periphery and a small diameter portion extending from the large diameter portion and having a smaller diameter than the large diameter portion are integrally formed, and a first inclined surface is provided between the large diameter portion and the small diameter portion. a first eccentric shaft having an eccentric portion on its outer periphery, a through hole into which a small diameter portion of the first eccentric shaft is loosely fitted, and a first eccentric shaft formed on a large diameter side of the through hole. a second eccentric shaft having a second inclined surface that abuts the inclined surface; and a radius of an end of the second eccentric shaft that is fitted into the small diameter portion of the first eccentric shaft and is opposite to the second inclined surface. An eccentric shaft for a multi-cylinder rotary piston engine, comprising: a regulating member that regulates movement in the direction; and a fastening member that presses the regulating member in the direction of the large diameter portion of the second eccentric shaft.
JP3381984U 1984-03-08 1984-03-08 Eccentric shaft of multi-cylinder rotary piston engine Granted JPS60145201U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3381984U JPS60145201U (en) 1984-03-08 1984-03-08 Eccentric shaft of multi-cylinder rotary piston engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3381984U JPS60145201U (en) 1984-03-08 1984-03-08 Eccentric shaft of multi-cylinder rotary piston engine

Publications (2)

Publication Number Publication Date
JPS60145201U JPS60145201U (en) 1985-09-26
JPH0128243Y2 true JPH0128243Y2 (en) 1989-08-29

Family

ID=30536620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3381984U Granted JPS60145201U (en) 1984-03-08 1984-03-08 Eccentric shaft of multi-cylinder rotary piston engine

Country Status (1)

Country Link
JP (1) JPS60145201U (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619761Y2 (en) * 1987-07-10 1994-05-25 マツダ株式会社 Eccentric shaft of multi-cylinder rotary piston engine

Also Published As

Publication number Publication date
JPS60145201U (en) 1985-09-26

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