JPH0529405Y2 - - Google Patents
Info
- Publication number
- JPH0529405Y2 JPH0529405Y2 JP1987013025U JP1302587U JPH0529405Y2 JP H0529405 Y2 JPH0529405 Y2 JP H0529405Y2 JP 1987013025 U JP1987013025 U JP 1987013025U JP 1302587 U JP1302587 U JP 1302587U JP H0529405 Y2 JPH0529405 Y2 JP H0529405Y2
- Authority
- JP
- Japan
- Prior art keywords
- scotch yoke
- hole
- shaft
- crankcase
- lubricant
- 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 - Lifetime
Links
- 239000000314 lubricant Substances 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
Landscapes
- Transmission Devices (AREA)
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案は、回転運動を往復直線運動に変換する
スコツチヨーク機構に関するものである。[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a Scotch yoke mechanism that converts rotational motion into reciprocating linear motion.
（従来の技術）
特公昭54−28623号公報に開示された、所謂ギ
ホード・マクマホン型冷凍機に於いては、駆動源
たるモーターのシヤフトが、クランクピンを介し
て、デイスプレサピストンと一体的に上下方向に
往復動するスコツチヨークに連結されており、モ
ーターの駆動に伴い、クランクピンの回転がスコ
ツチヨークにより往復直線動に変換せられ、デイ
スプレサピストンが作動して、周知のように冷凍
が発生されるようになつている。(Prior art) In the so-called Gifford-McMahon type refrigerator disclosed in Japanese Patent Publication No. 54-28623, the shaft of the motor, which is the drive source, is integrally connected to the displacer piston via the crank pin. It is connected to a Scotch yoke that reciprocates in the vertical direction, and as the motor is driven, the rotation of the crank pin is converted into reciprocating linear motion by the Scotch yoke, which activates the displacer piston, causing refrigeration as is well known. It is becoming more and more like this.
（考案が解決しようとする問題点）
この冷凍機においては、スコツチヨークの回転
を防止するためにガイド部材が設けられている。
このガイド部材は、一端がスコツチヨークの運動
方向と平行な面に形成された溝状凹部に摺接自在
に嵌合され、他端がクランクケースの上記溝状凹
部と対向する部分に固定されたものであるので、
このガイド部材の一端とスコツチヨークの溝状凹
部との間には、スコツチヨークのストロークの影
響により潤滑剤を封入するための閉空間を形成す
ることが困難になる。従つて、上記した冷凍機に
おいては、ガイド部材の一端と溝状凹部との間に
潤滑剤を塗布しているが、この場合、この潤滑剤
はスコツチヨークのガイド部材に対する摺動によ
り、比較的短時間（略2000時間）でなくなり、そ
れ以後は、グリス切れに伴う不具合（例えば、ガ
イド部材や空間の内壁のかじり）が惹起するおそ
れがあつた。(Problems to be Solved by the Invention) In this refrigerator, a guide member is provided to prevent rotation of the Scotch yoke.
One end of this guide member is slidably fitted into a groove-shaped recess formed in a plane parallel to the direction of movement of the Scotch yoke, and the other end is fixed to a portion of the crankcase that faces the groove-shaped recess. So,
It becomes difficult to form a closed space for sealing the lubricant between one end of the guide member and the groove-like recess of the Scotch yoke due to the influence of the stroke of the Scotch yoke. Therefore, in the refrigerator described above, lubricant is applied between one end of the guide member and the groove-shaped recess, but in this case, this lubricant is applied in a relatively short period of time due to the sliding of the Scotch yoke against the guide member. After that time (approximately 2000 hours), there was a risk that problems associated with running out of grease (for example, galling of the guide member or the inner wall of the space) would occur.
それ故に、本考案は、スコツチヨーク機構にお
ける潤滑作用を長時間継続できるようにすること
を、技術的課題とする。 Therefore, the technical problem of the present invention is to enable the lubrication effect in the Scotch yoke mechanism to continue for a long time.
〔考案の構成〕
（問題点を解決するための手段）
上記した技術的課題を解決するために、本考案
において講じた技術的手段は、
冷凍機のクランクケースの内部空間内に配設さ
れ、クランクピンの回転運動を往復直線運動に変
換するスコツチヨークを有するスコツチヨーク機
構において、往復直線運動の方向と平行となるよ
うにスコツチヨークを貫通して形成され且つ小径
部間に位置する大径部を備えた孔と、スコツチヨ
ークの運転時の回転を防止すべく孔に挿通され、
孔の小径部内周面と摺接するように両端がクラン
クケースに固定された固定シヤフトとを有し、孔
の大径部内周面とシヤフトとの間に形成される空
間に潤滑剤を封入したことである。[Structure of the invention] (Means for solving the problems) In order to solve the above-mentioned technical problems, the technical means taken in the present invention are as follows: A Scotch yoke mechanism having a Scotch yoke that converts rotational motion of a crankpin into reciprocating linear motion, including a large diameter portion that is formed through the Scotch yoke so as to be parallel to the direction of the reciprocating linear motion and located between the small diameter portions. It is inserted through the hole and the Scotch yoke to prevent it from rotating during operation.
A fixed shaft having both ends fixed to the crankcase so as to be in sliding contact with the inner circumferential surface of the small diameter portion of the hole, and a lubricant sealed in the space formed between the inner circumferential surface of the large diameter portion of the hole and the shaft. It is.
を構成したことである。This is what constituted the following.
（作用）
上記技術的手段によれば、スコツチヨークの運
転時の回転を防止するための固定シヤフトをスコ
ツチヨークの直線運動方向と平行になるようにス
コツチヨークを貫通して配設し且つ固定シヤフト
の両端をクランクケースに固定したので、固定シ
ヤフトと孔の内周面との間に潤滑剤を封入するた
めの閉空間が常時形成される。その結果、スコツ
チヨークの固定シヤフトに対する摺動が長時間に
渡つて行われても、潤滑剤はなくなることはな
い。又、潤滑剤の蒸発が確実に抑えられ、その蒸
発に伴う冷凍回路の汚染が最少限に抑えられる。(Function) According to the above technical means, the fixed shaft for preventing the rotation of the Scotch yoke during operation is disposed so as to pass through the Scotch yoke so as to be parallel to the linear movement direction of the Scotch yoke, and both ends of the fixed shaft are provided. Since it is fixed to the crankcase, a closed space for sealing the lubricant is always formed between the fixed shaft and the inner peripheral surface of the hole. As a result, even if the Scotch yoke is slid over a fixed shaft for a long period of time, the lubricant will not run out. Further, evaporation of the lubricant is reliably suppressed, and contamination of the refrigeration circuit due to the evaporation is suppressed to a minimum.
（実施例）
以下、本考案の一実施例を添付図面にもとずい
て説明する。単一図面において、所謂ギホード・
マクマホン型の冷凍機のクランクケース１０の内
部空間１１に配設されたスコツチヨーク機構１２
は、矩形の穴部１３が形成されたスコツチヨーク
１４を備える。モーター（図示略）の駆動により
回転されるクランクピン１５は、スコツチヨーク
１４の矩形の穴部１３内に嵌合されており、周知
のように、クランクピン１５が回転すると、スコ
ツチヨーク１４は上下方向に往復動するようにな
つている。スコツチヨーク１４は、ロツド１６を
介して、デイスプレサピストン（図示略）と連結
されており、このスコツチヨーク１４の上下方向
往復動と一体運動するデイスプレサピストンが、
周知のように、冷凍を発生する。(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings. In a single drawing, the so-called Gifford
Scotch yoke mechanism 12 disposed in the internal space 11 of the crankcase 10 of a McMahon type refrigerator.
includes a Scotch yoke 14 in which a rectangular hole 13 is formed. The crank pin 15 rotated by the drive of a motor (not shown) is fitted into the rectangular hole 13 of the Scotch yoke 14, and as is well known, when the crank pin 15 rotates, the Scotch yoke 14 moves in the vertical direction. It is designed to move back and forth. The Scotch yoke 14 is connected to a displacer piston (not shown) via a rod 16, and the displacer piston moves integrally with the vertical reciprocation of the Scotch yoke 14.
As is well known, freezing occurs.
スコツチヨーク１４の左側の部分には、孔２０
が貫設されており、孔２０の軸芯は、スコツチヨ
ーク１４の運動方向に平行となつている。孔２０
は、大径部２１と、その両側に位置する小径部２
２，２３を備える。孔２０には、スコツチヨーク
１４の運動時に、その回転を防止するためのシヤ
フト２５が挿入される。シヤフト２５の両端部
は、クランクケース１０に固定される。シヤフト
２５は、孔２０の小径部２２，２３の内周面と摺
接するすると共に、孔の大径部２１の内周面との
間には空間２６が画成され、この空間２６はグリ
スその他の潤滑剤が封入される。 In the left part of the Scotch yoke 14, there is a hole 20.
is provided through the hole 20, and the axis of the hole 20 is parallel to the direction of movement of the Scotch yoke 14. hole 20
is a large diameter portion 21 and a small diameter portion 2 located on both sides thereof.
2, 23. A shaft 25 is inserted into the hole 20 to prevent rotation of the Scotch yoke 14 during movement. Both ends of the shaft 25 are fixed to the crankcase 10. The shaft 25 is in sliding contact with the inner peripheral surfaces of the small diameter portions 22 and 23 of the hole 20, and a space 26 is defined between the shaft 25 and the inner peripheral surface of the large diameter portion 21 of the hole. lubricant is enclosed.
尚、冷凍機の、その他の部分の構成は、特公昭
54−28623号公報に開示されたものと同じである。 In addition, the configuration of other parts of the refrigerator is
This is the same as that disclosed in Publication No. 54-28623.
クランクピン１５の回転により、スコツチヨー
ク１４は固定体たるシヤフト２５にガイドされて
往復直線動をなす。グリスその他の潤滑剤もま
た、スコツチヨーク４の往復直線動に伴いシヤフ
ト２５上を往復するが、このように潤滑されたシ
ヤフト２５上をスコツチヨーク１４の孔２０の小
径部２２，２３が通過するので、スコツチヨーク
１４とシヤフト２５との間の潤滑は全うされる。
潤滑剤は、スコツチヨーク１４の孔２０の大径部
２１内周面とシヤフト２５との間に画成される空
間２６に封入されているので、長時間の稼働に充
分応じられるだけの量は確保される。 As the crank pin 15 rotates, the Scotch yoke 14 is guided by the shaft 25, which is a fixed body, and performs reciprocating linear motion. Grease and other lubricants also reciprocate on the shaft 25 with the reciprocating linear movement of the Scotch yoke 4, but since the small diameter portions 22 and 23 of the hole 20 of the Scotch yoke 14 pass over the shaft 25 lubricated in this way, Lubrication between the Scotch yoke 14 and the shaft 25 is completely maintained.
Since the lubricant is sealed in the space 26 defined between the inner peripheral surface of the large diameter part 21 of the hole 20 of the Scotch yoke 14 and the shaft 25, a sufficient amount is ensured to support long-time operation. be done.
本考案は、以下の如く効果を有する。 The present invention has the following effects.
スコツチヨークの固定シヤフトに対する摺動が
長時間に渡つて行われても、潤滑剤はなくなるこ
とはない。又、潤滑剤の蒸発を確実に抑えること
ができ、その蒸発に伴う冷凍回路の汚染を最少限
に抑えることができる。 Even if the Scotch yoke is slid over a fixed shaft over a long period of time, the lubricant will not run out. Further, evaporation of the lubricant can be reliably suppressed, and contamination of the refrigeration circuit caused by the evaporation can be suppressed to a minimum.
図面は、本考案に係るスコツチヨーク機構が冷
凍機のクランクケース内に配設されたときの状態
を示す図である。
１５……クランクピン、１４……スコツチヨー
ク、２０……孔、２１……孔の大径部、２２，２
３……孔の小径部、２５……シヤフト、２６……
空間。
The drawing is a diagram showing a state in which the Scotch yoke mechanism according to the present invention is disposed in the crankcase of a refrigerator. 15... Crank pin, 14... Scotch yoke, 20... Hole, 21... Large diameter part of hole, 22,2
3... Small diameter part of the hole, 25... Shaft, 26...
space.
Claims (1)
れ、クランクピンの回転運動を往復直線運動に変
換するスコツチヨークを有するスコツチヨーク機
構において、 前記往復直線運動の方向と平行となるように前
記スコツチヨークを貫通して形成され且つ小径部
間に位置する大径部を備えた孔と、 前記スコツチヨークの運転時の回転を防止すべ
く前記孔に挿通され、前記孔の小径部内周面と摺
接するように両端が前記クランクケースに固定さ
れた固定シヤフトとを有し、 前記孔の大径部内周面と前記シヤフトとの間に
形成される空間に潤滑剤を封入したことを特徴と
するスコツチヨーク機構。[Claims for Utility Model Registration] In a Scotch yoke mechanism that is disposed within the internal space of the crankcase of a refrigerator and that converts rotational motion of a crank pin into reciprocating linear motion, a hole formed through the Scotch yoke and having a large diameter part located between the small diameter parts; and a hole inserted through the hole to prevent rotation of the Scotch yoke during operation, and an inner periphery of the small diameter part of the hole. a fixed shaft having both ends fixed to the crankcase so as to be in sliding contact with the crankcase, and a lubricant is sealed in a space formed between the inner circumferential surface of the large diameter part of the hole and the shaft. Scotch yoke mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987013025U JPH0529405Y2 (en) | 1987-01-30 | 1987-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987013025U JPH0529405Y2 (en) | 1987-01-30 | 1987-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63121850U JPS63121850U (en) | 1988-08-08 |
| JPH0529405Y2 true JPH0529405Y2 (en) | 1993-07-28 |
Family
ID=30801704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987013025U Expired - Lifetime JPH0529405Y2 (en) | 1987-01-30 | 1987-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529405Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5268706B2 (en) * | 2009-02-25 | 2013-08-21 | 日本電産サンキョー株式会社 | Linear drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4944662U (en) * | 1972-07-19 | 1974-04-19 | ||
| JPS5221569A (en) * | 1975-08-10 | 1977-02-18 | Hachiro Michioka | Piston-crank mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644639Y2 (en) * | 1975-12-13 | 1981-10-19 |
-
1987
- 1987-01-30 JP JP1987013025U patent/JPH0529405Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4944662U (en) * | 1972-07-19 | 1974-04-19 | ||
| JPS5221569A (en) * | 1975-08-10 | 1977-02-18 | Hachiro Michioka | Piston-crank mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63121850U (en) | 1988-08-08 |
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