JPS6115269Y2 - - Google Patents
Info
- Publication number
- JPS6115269Y2 JPS6115269Y2 JP16727279U JP16727279U JPS6115269Y2 JP S6115269 Y2 JPS6115269 Y2 JP S6115269Y2 JP 16727279 U JP16727279 U JP 16727279U JP 16727279 U JP16727279 U JP 16727279U JP S6115269 Y2 JPS6115269 Y2 JP S6115269Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- oil
- large end
- crankshaft
- end 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.)
- Expired
Links
- 239000010687 lubricating oil Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 description 14
- 239000003507 refrigerant Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Compressor (AREA)
Description
【考案の詳細な説明】
この考案は往復動圧縮機の改良に関するもの
で、特に潤滑油をはねかけ方式にて給油箇所へ供
給するものの連接桿の改良に関するものである。[Detailed Description of the Invention] This invention relates to an improvement of a reciprocating compressor, and in particular to an improvement of a connecting rod for supplying lubricating oil to an oil supply point by a splash method.
従来のこの種のものの冷媒圧縮機を第1図およ
び第2図により説明する。図において、1はクラ
ンクケース、2はクランクケース1内に収納され
た電動機、3は電動機2によつて駆動されるクラ
ンク軸、4はクランク軸3のクランクピン3a部
に大端部軸受4a部を嵌着させた連接桿、5は連
接桿4に装着され、シリンダ1a内を往復動する
ピストン、6はクランクケース1の底部に貯留さ
れてある潤滑油、7は連接桿4の大端部軸受4a
下端に装着された油かき棒で、クランク軸3の回
動によつて連接桿4が駆動すると、潤滑油6を撹
拌させる。8は連接桿4の大端部軸受4a上部に
穿設され、クランクピン3a部と摺接する摺動面
9へ給油するための給油孔である。 A conventional refrigerant compressor of this type will be explained with reference to FIGS. 1 and 2. In the figure, 1 is a crankcase, 2 is an electric motor housed in the crankcase 1, 3 is a crankshaft driven by the electric motor 2, and 4 is a large end bearing 4a attached to a crank pin 3a of the crankshaft 3. 5 is a piston that is attached to the connecting rod 4 and reciprocates within the cylinder 1a, 6 is lubricating oil stored at the bottom of the crankcase 1, and 7 is the large end of the connecting rod 4. Bearing 4a
An oil scraper attached to the lower end stirs the lubricating oil 6 when the connecting rod 4 is driven by the rotation of the crankshaft 3. Reference numeral 8 designates an oil supply hole drilled in the upper part of the large end bearing 4a of the connecting rod 4 for supplying oil to the sliding surface 9 that comes into sliding contact with the crank pin 3a.
このように構成された従来の圧縮機では、油か
き棒7により撹拌されてはね上げられた潤滑油6
は、霧噴状となつて連接桿4に付着して油滴とな
り、給油孔8に流れ込んで摺接面9の潤滑が行わ
れるように構成してある。ところが、給油孔8の
ピン側開口8aに位置する摺動面9に作用する荷
重は、クランク軸3の1回転の3/4〜5/6が上方
向、即ち圧縮方向であるため、ピン側開口8aは
クランクピン3aによりこの間はほとんど閉じら
れた状態である。言い換えれば、ピン側開口8a
から摺動面9に給油されるのはクランク軸3の1
回転の1/4〜1/6である。そして、ピン側開口8a
を大端部軸受4a上部に設けてあるため、クラン
クピン3aに作用する最大荷重時に、摺動面9の
油膜が切断される結果となるなど、潤滑上に問題
点があつた。 In the conventional compressor configured in this way, the lubricating oil 6 is stirred and splashed by the oil shovel 7.
The oil droplets adhere to the connecting rod 4 in the form of a mist and flow into the oil supply hole 8 to lubricate the sliding surface 9. However, since 3/4 to 5/6 of one rotation of the crankshaft 3 is in the upward direction, that is, in the compression direction, the load acting on the sliding surface 9 located at the pin-side opening 8a of the oil supply hole 8 is on the pin side. During this period, the opening 8a is almost closed by the crank pin 3a. In other words, the pin side opening 8a
The sliding surface 9 is supplied with oil from 1 of the crankshaft 3.
It is 1/4 to 1/6 of the rotation. And the pin side opening 8a
Since the crank pin 3a is provided above the big end bearing 4a, there are problems with lubrication, such as the oil film on the sliding surface 9 being cut off when the maximum load is applied to the crank pin 3a.
この考案は上述した点に鑑みてなされたもの
で、連接桿の大端部軸受巾をピストン方向側が大
寸法となるように構成して、摺動面への潤滑油の
供給を良くした圧縮機を提供するものである。 This idea was made in view of the above points, and is a compressor that improves the supply of lubricating oil to the sliding surfaces by configuring the bearing width of the large end of the connecting rod to be larger on the piston side. It provides:
以下、この考案の一実施例を説明する。第3図
は冷媒圧縮機の連接桿の大端部軸受部分を示す詳
細図である。図において、Aは大端部軸受4aの
上方、即ちピストン5方向側の巾寸法、Bは大端
部軸受4aの下方、即ち油かき棒7方向側の巾寸
法でA>Bとなる段付形状に構成してあり、4b
はその段付部である。なおその他の部分について
は第3図と同じ符号を付けてあり説明は省略す
る。 An embodiment of this invention will be described below. FIG. 3 is a detailed view showing the large end bearing portion of the connecting rod of the refrigerant compressor. In the figure, A is the width dimension above the big end bearing 4a, that is, on the side toward the piston 5, and B is the width dimension below the big end bearing 4a, that is, on the side toward the oil scraper 7, and is stepped so that A>B. It is configured in the shape of 4b
is the stepped part. Note that other parts are given the same reference numerals as in FIG. 3, and explanations thereof will be omitted.
このように構成されたものにおいては、油かき
棒7により撹拌されてはね上げられた潤滑油6は
連接桿4よりクランクピン3aに付着し、大端部
軸受4aの段付部4bから摺動面へ給油される。
即ち、段付部4bは荷重の作用面に位置していな
いためこの段付部4bの摺動面には隙間があり、
潤滑油の流入が容易となる。この点について詳述
すると、連接桿4の大端部軸受4aは、クランク
軸3の回転により連接桿4の小端部が揺動運動を
行うのと異なり、回転運動を行う。このため、大
端部軸受4aが1回転する間に、その段付部4b
近くのクランク軸3に付着した潤滑油が、第3図
の矢印に示すように、段付部4bの隙間から必ず
流入することになる。そして、流入した潤滑油に
よつて形成された摺動面9の油膜は、給油孔を設
けていないため切断されることなく、良好な潤滑
を行うことができる。 In this structure, the lubricating oil 6 stirred and splashed by the oil scraper 7 adheres to the crank pin 3a from the connecting rod 4, and flows from the stepped portion 4b of the large end bearing 4a to the sliding surface. is refueled.
That is, since the stepped portion 4b is not located on the load acting surface, there is a gap on the sliding surface of the stepped portion 4b.
This facilitates the inflow of lubricating oil. To explain this point in detail, the large end bearing 4a of the connecting rod 4 performs a rotational movement, unlike the small end of the connecting rod 4 which performs a rocking movement due to the rotation of the crankshaft 3. Therefore, while the big end bearing 4a rotates once, the stepped portion 4b
The lubricating oil adhering to the nearby crankshaft 3 will definitely flow in through the gap in the stepped portion 4b, as shown by the arrow in FIG. Since no oil supply holes are provided, the oil film formed on the sliding surface 9 by the inflowing lubricating oil is not cut, and good lubrication can be achieved.
また、第4図は他の実施例を示し、A>Bとな
るテーパ形状に構成してある。そして、その他の
部分および作用効果は第3図のものと同様であり
説明は省略する。 Further, FIG. 4 shows another embodiment, which is configured in a tapered shape such that A>B. The other parts and effects are the same as those in FIG. 3, and their explanations will be omitted.
以上のように、この考案は往復動圧縮機の連接
桿の大端部軸受巾をピストン方向側が大寸法とな
るテーパ形状あるいは段付形状に構成してあるた
め、クランクピン部との摺動面を良好に潤滑する
ことができる。 As described above, in this invention, the bearing width of the large end of the connecting rod of the reciprocating compressor is configured in a tapered or stepped shape with a larger dimension on the piston side, so that the sliding surface with the crank pin portion can be well lubricated.
第1図は従来の冷媒圧縮機を示す断面図、第2
図は第1図の連接桿の大端部軸受部分を示す詳細
図、第3図はこの考案の一実施例を示す圧縮機の
連接桿の大端部軸受部分を示す側面図、第4図は
他の実施例を示す側面図である。
図中、3はクランク軸、4は連接桿、4aは大
端部軸受である。なお、図中同一符号は同一また
は相当部分を示す。
Figure 1 is a sectional view showing a conventional refrigerant compressor, Figure 2 is a sectional view showing a conventional refrigerant compressor.
The figures are a detailed view showing the large end bearing portion of the connecting rod in Fig. 1, Fig. 3 is a side view showing the large end bearing portion of the connecting rod of a compressor showing an embodiment of this invention, and Fig. 4. FIG. 3 is a side view showing another embodiment. In the figure, 3 is a crankshaft, 4 is a connecting rod, and 4a is a large end bearing. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
て、クランク軸へ嵌着される連接桿の大端部軸受
巾をピストン方向側が大寸法となるテーパ形状あ
るいは段付形状に構成したことを特徴とする往復
動圧縮機。 In a reciprocating compressor that is supplied with lubricating oil by splashing, the bearing width of the large end of the connecting rod fitted to the crankshaft is configured in a tapered or stepped shape with a larger dimension on the side facing the piston. reciprocating compressor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16727279U JPS6115269Y2 (en) | 1979-11-29 | 1979-11-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16727279U JPS6115269Y2 (en) | 1979-11-29 | 1979-11-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5681182U JPS5681182U (en) | 1981-07-01 |
JPS6115269Y2 true JPS6115269Y2 (en) | 1986-05-12 |
Family
ID=29678139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16727279U Expired JPS6115269Y2 (en) | 1979-11-29 | 1979-11-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6115269Y2 (en) |
-
1979
- 1979-11-29 JP JP16727279U patent/JPS6115269Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5681182U (en) | 1981-07-01 |
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