JPH04164174A - Connecting rod for compressor - Google Patents
Connecting rod for compressorInfo
- Publication number
- JPH04164174A JPH04164174A JP28924790A JP28924790A JPH04164174A JP H04164174 A JPH04164174 A JP H04164174A JP 28924790 A JP28924790 A JP 28924790A JP 28924790 A JP28924790 A JP 28924790A JP H04164174 A JPH04164174 A JP H04164174A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- compressor
- connecting rod
- piston
- rod holding
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は冷蔵庫や冷凍ショーケースに使用される圧縮機
の連接棒に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a connecting rod for a compressor used in refrigerators and freezer showcases.
（ロ）従来の技術
従来、圧縮機の連接棒は、一端にピストンを連結される
小径部を有し、他端に回転軸の偏心部に連結される大径
部を一体形成している。そして、この連接棒は圧縮機の
出力に応じてそのストロークを変える必要があるため、
機種毎に予め長さの異なる連接棒を製作して対応してい
た。(B) Prior Art Conventionally, a connecting rod of a compressor has a small diameter portion connected to a piston at one end, and a large diameter portion connected to an eccentric portion of a rotating shaft at the other end. And since this connecting rod needs to change its stroke depending on the output of the compressor,
Connecting rods of different lengths were manufactured in advance for each model.
（ハ）発明が解決しようとする課題
しかし、この場合には種々の長さの連接棒を製作しなけ
ればならないため、部品点数が増加するという問題があ
ると共に、ピストンのトップクリアランス調整のために
、モーターケースと回転軸の軸受部とを分割しなければ
ならず、組立工程が複雑になるという問題があった。（
特開昭６０−３０４８８号公報参照）
また、連接棒を小径部側と大径部側とに分割し両者をネ
ジで螺合したり、抵抗溶接したり、また、リベットにて
加締結合したりする方法もある（特開昭５６−６０８８
０号公報参照）。しかし、これらの方法は加工工数が増
加しコストを高騰させるものであるため、実用的ではな
い。(c) Problems to be Solved by the Invention However, in this case, connecting rods of various lengths must be manufactured, which poses the problem of an increase in the number of parts, as well as the need to adjust the top clearance of the piston. However, there was a problem in that the motor case and the bearing part of the rotating shaft had to be separated, which complicated the assembly process. (
(Refer to Japanese Unexamined Patent Publication No. 60-30488.) Also, the connecting rod can be divided into a small diameter part and a large diameter part, and the two parts can be screwed together with screws, resistance welded, or crimped with rivets. There is also a method of
(See Publication No. 0). However, these methods are not practical because they increase the number of processing steps and raise costs.
更に、ピストン、連接棒、及び回転軸の結合は、各部品
の加工精度や組立条件によってばらつくため、これを考
慮してピストンのトップクリアランスを必要以にに大き
く取る必要があり、圧縮効率を低下させる要因となって
いた。Furthermore, the connection between the piston, connecting rod, and rotating shaft varies depending on the processing accuracy and assembly conditions of each part, so it is necessary to take this into account and provide a larger than necessary top clearance for the piston, which reduces compression efficiency. This was a contributing factor.
本発明は斯る点に鑑みなされたもので、圧縮機の組立時
に連接棒の長さを任意に調整でき、異種容量の圧縮機に
も容易に対応できると共に、トップクリアランスの低減
により圧縮機の効率を向上することを目的とする。The present invention has been developed in view of these points, and allows the length of the connecting rod to be adjusted arbitrarily when assembling the compressor, making it easily compatible with compressors of different capacities, and reducing the top clearance of the compressor. The aim is to improve efficiency.
（ニ）課題を解決するための手段
本発明は、一端にピストンを連結し、他端を回転軸の偏
心部に連結してなる圧縮機の連接棒であって、ピストン
に連結される小径部を有するロッド部と、前記偏心部に
嵌合する大径部を有するロッド保持部とからなり、前記
ロッド部とロッド保持部を係合すると共に、この係合部
を係合片にて固定することにより連結したものである。(d) Means for Solving the Problems The present invention relates to a connecting rod for a compressor having one end connected to a piston and the other end connected to an eccentric portion of a rotating shaft, the connecting rod having a small diameter portion connected to the piston. and a rod holding part having a large diameter part that fits into the eccentric part, the rod part and the rod holding part are engaged, and this engaging part is fixed with an engaging piece. It is connected by this.
また、ロッド部とロッド保持部との間にスペーサを介在
したものである。Further, a spacer is interposed between the rod portion and the rod holding portion.
（ホ）作用
本発明の圧縮機の連接棒は上記の構成により、圧縮機の
組立時に、ロッド部をシリンダ内に組み込み、かつ、ロ
ッド保持部を回転軸の偏心部に挿入した後、ロッド部と
ロッド保持部の係合部に係合片を嵌着すれば、所望とす
る長さの連接棒とすることができ、しかも、ロッド部の
上面をテーパ加工したり、成るいはロッド部上面に長さ
方向で異なる位置の複数の溝を形成したりすると共に、
その嵌合深さの異なる係合片を複数用意してお（ことに
より、連接棒を適宜長さに調整して固定することができ
、圧縮機の容量に応じて精度の良い種々のストロークの
連接棒が得られる。この結果、トップクリアランスを減
少させることができ、圧縮機の圧縮効率を向上すること
ができる。(E) Function The connecting rod of the compressor of the present invention has the above-described structure, so that when the compressor is assembled, the rod part is assembled into the cylinder, and after the rod holding part is inserted into the eccentric part of the rotating shaft, the rod part By fitting the engaging piece into the engaging part of the rod holding part, the connecting rod can have the desired length.Moreover, the upper surface of the rod part can be tapered, or the upper surface of the rod part can be tapered. In addition to forming multiple grooves at different positions in the length direction,
Multiple engagement pieces with different mating depths are prepared (this allows the connecting rod to be adjusted to an appropriate length and fixed, allowing for accurate various strokes depending on the capacity of the compressor. A connecting rod is obtained.As a result, the top clearance can be reduced and the compression efficiency of the compressor can be improved.
また、係合片を複数種用意しなくとも、ロッド部とロッ
ド保持部の間に介在するスペーサを複数用意しておけば
、連接棒の長さを任意に調整することができ、この場合
にも圧縮機の容量に応じて精度の良い種々のストローク
の連接棒を得ることができ、しかも、組立精度を一層高
められる。In addition, without having to prepare multiple types of engagement pieces, if you prepare multiple spacers interposed between the rod part and the rod holding part, the length of the connecting rod can be adjusted arbitrarily. It is also possible to obtain connecting rods with various strokes with high accuracy depending on the capacity of the compressor, and furthermore, the assembly accuracy can be further improved.
（へ）実施例 以下、本発明の実施例を図面に基すいて説明する。(f) Example Embodiments of the present invention will be described below with reference to the drawings.
ｌは密閉容器２内の上部に圧縮機部３を下部に前記圧縮
機部３を駆動する電動機部４を収納してなる密閉型圧縮
機である。前記圧縮機部３は、ピストン５が往復動する
シリンダ６と回転軸７を軸支する軸受８とを一体形成し
たモーターケース９を備えている。１０は一端にピスト
ン５を連結し、他端を回転軸７の偏心部１１に連結して
なる連接棒である。この連接棒１０は、ピストン５に連
結される小径部１２を有するロッド部１３と、前記偏心
部１１に嵌合する大径部１４を有するロッド保持部１５
と、前記ロッド部１３とロッド保持部１５を連結する板
バネ１６と、ロッド部１３とロッド保持部１５との間に
介在したスペーサ１７とにより構成される。1 is a hermetic compressor in which a compressor part 3 is housed in the upper part of a hermetic container 2, and an electric motor part 4 for driving the compressor part 3 is housed in the lower part. The compressor section 3 includes a motor case 9 in which a cylinder 6 in which a piston 5 reciprocates and a bearing 8 that pivotally supports a rotating shaft 7 are integrally formed. 10 is a connecting rod having one end connected to the piston 5 and the other end connected to the eccentric portion 11 of the rotating shaft 7. This connecting rod 10 includes a rod portion 13 having a small diameter portion 12 connected to the piston 5, and a rod holding portion 15 having a large diameter portion 14 that fits into the eccentric portion 11.
, a plate spring 16 connecting the rod portion 13 and the rod holding portion 15 , and a spacer 17 interposed between the rod portion 13 and the rod holding portion 15 .
斯る圧縮機の連接棒ｌＯは次のよな手順で組立てられる
。The connecting rod IO of such a compressor is assembled in the following manner.
まず、回転軸７の偏心部１１にロッド保持部１５の大径
部１４を嵌入すると共に、ロッド保持部１５の上面に設
けた溝１８に板バネ１６を挿着しておく。ここで、板バ
ネ１６は第３ず乃至第５図に示すように、略コ字状を呈
しており下端両側に内方へ突出した爪部１９と、上部中
央の一側面に切り起こされた舌片２０とを−・体形成し
ている。First, the large diameter portion 14 of the rod holding portion 15 is fitted into the eccentric portion 11 of the rotating shaft 7, and the leaf spring 16 is inserted into the groove 18 provided on the upper surface of the rod holding portion 15. Here, as shown in FIGS. 3 to 5, the leaf spring 16 has a substantially U-shape, and has claw portions 19 protruding inward on both sides of the lower end and a cut-and-raised portion on one side of the center of the upper portion. It forms a body with the tongue piece 20.
そして、この板バネ１６は前記爪部１９がロッド保持部
１５の下面に弾性的に引っ掛かることで該ロッド保持部
１５に固着される。一方、ロッド部１３を、小径部１２
をピストンピン２１によってピストン５と連結し、シリ
ンダ６内に挿入しておく。次に、必要な肉厚を有するス
ペーサ１７をロッド保持部１５に形成されｔζ凹所２２
に挿入セットする。最後に、ロッド部１３をロッド保持
部１５の凹所２２に挿入する。この時、板バネ１６の舌
片２０は、ロッド部１３の挿入によって挿入方向へ反る
ため、ロッド部１３は容易に挿入できると共にスペーサ
１７に付き当ることで所定の位置まで確実に挿入される
。尚、ロッド部１３の上面には挿入方向に向かってその
肉厚を増すようなテーパ部２３が形成されており、板バ
ネ１６の舌片２０と協働してロッド部１３がロッド保持
部１５の凹所２２から抜けるのを防止している。更に、
前記テーパ部２３には細かい鋸歯状の溝２４が形成され
ているため、特に、引っ張り方向の力に対しての抜けを
確実に防止できる。The plate spring 16 is fixed to the rod holding part 15 by the claw part 19 being elastically caught on the lower surface of the rod holding part 15. On the other hand, the rod portion 13 is
is connected to the piston 5 by a piston pin 21 and inserted into the cylinder 6. Next, a spacer 17 having a necessary wall thickness is formed in the rod holding portion 15 and placed in the tζ recess 22.
Insert and set. Finally, the rod portion 13 is inserted into the recess 22 of the rod holding portion 15. At this time, the tongue piece 20 of the leaf spring 16 is bent in the insertion direction by the insertion of the rod part 13, so that the rod part 13 can be easily inserted and is surely inserted to a predetermined position by coming into contact with the spacer 17. . Note that a tapered portion 23 is formed on the upper surface of the rod portion 13 so that its thickness increases toward the insertion direction, and the rod portion 13 cooperates with the tongue piece 20 of the leaf spring 16 to hold the rod holding portion 15. This prevents it from coming out of the recess 22. Furthermore,
Since the tapered portion 23 is formed with fine sawtooth grooves 24, it is possible to reliably prevent it from coming off, especially when subjected to a force in the tensile direction.
このように構成された圧縮機の連接棒は、圧縮機の組立
時に、ピストン５を連結しｔこロッド部１３をシリンダ
６内に組み込み、かつ、ロッド保持部１５０大径部１４
を回転軸７の偏心部１１に挿入した後、ロフト部１３と
ロッド保持部１５の係合部に板バネ１６を嵌着すれば、
所望とする長さの連接棒１０を得ることができる。まｔ
ζ、ロッド部１３とロッド保持部１５の間に介在するス
ペーサ１７を複数用意しておけば、連接棒１０の長さを
任意に調整することができ、圧縮機の容量に応じて精度
の良い種々のストロークの連接棒１０が得られる。この
結果、トップクリアランスを減少させることができ、圧
縮機の圧縮効率を向上することができる。また、このと
き、ロッド部１３、ロッド保持部１５．及び板バネ１６
は共通部品で良いため、生産−性を高めることができる
。更に、ロッド部１３とロッド保持部１５とは分割仕様
であるため、従来のようにモーターケース９と軸受８と
を分割したりする必要はなくなり、組立作業性を向上で
きる。The connecting rod of the compressor configured in this way connects the piston 5 and incorporates the rod portion 13 into the cylinder 6 when assembling the compressor.
is inserted into the eccentric portion 11 of the rotating shaft 7, and then the leaf spring 16 is fitted into the engagement portion between the loft portion 13 and the rod holding portion 15.
A connecting rod 10 of any desired length can be obtained. Yes
ζ By preparing a plurality of spacers 17 interposed between the rod part 13 and the rod holding part 15, the length of the connecting rod 10 can be adjusted arbitrarily, and the length can be adjusted with high precision according to the capacity of the compressor. Connecting rods 10 of various strokes are obtained. As a result, the top clearance can be reduced and the compression efficiency of the compressor can be improved. Also, at this time, the rod portion 13, the rod holding portion 15. and leaf spring 16
Because common parts can be used, productivity can be increased. Furthermore, since the rod portion 13 and the rod holding portion 15 are split, there is no need to separate the motor case 9 and the bearing 8 as in the conventional case, and assembly work efficiency can be improved.
（ト）発明の効果
以上のように本発明は、圧縮機の組立時に所望とする長
さの連接棒を簡単に作製することができ、部品点数を増
加したり生産性を悪化させることなく、圧縮機の容量に
応じて精度の良い種々のストロークの連接棒を提供でき
る。この結果、トップクリアランスを減少させることが
でき、圧縮機の圧縮効率を向上することができる。(G) Effects of the Invention As described above, the present invention allows a connecting rod of a desired length to be easily produced when assembling a compressor, without increasing the number of parts or deteriorating productivity. Connecting rods with various accurate strokes can be provided depending on the capacity of the compressor. As a result, the top clearance can be reduced and the compression efficiency of the compressor can be improved.
、 第１図は本発明の密閉型圧縮機を示す縦断面図、第
２図は連接棒の斜視図、第３図は同じく連接棒の分解斜
視図、第４図は板バネの側面図、第５図は同じく板バネ
の正面図、第６図は第３図のＡ−Ａセクションでの断面
図である。
１０・・・連接棒、１２−小径部、１３・ロッド部、１
４−・大径部、１５・・ロッド保持部、１６・・・板バ
ネ、１７・・・スペーサ、２２・・・凹所。, FIG. 1 is a longitudinal sectional view showing the hermetic compressor of the present invention, FIG. 2 is a perspective view of the connecting rod, FIG. 3 is an exploded perspective view of the connecting rod, and FIG. 4 is a side view of the leaf spring. FIG. 5 is a front view of the leaf spring, and FIG. 6 is a sectional view taken along the line AA in FIG. 3. 10...Connecting rod, 12-small diameter part, 13-rod part, 1
4-.Large diameter portion, 15.. Rod holding portion, 16.. Leaf spring, 17.. Spacer, 22.. Recess.
Claims (2)
に連結してなる圧縮機の連接棒であって、ピストンに連
結される小径部を有するロッド部と、前記偏心部に嵌合
する大径部を有するロッド保持部とからなり、前記ロッ
ド部とロッド保持部を係合すると共に、この係合部を係
合片にて固定することにより連結したことを特徴とする
圧縮機の連接棒。(1) A connecting rod for a compressor having one end connected to a piston and the other end connected to an eccentric part of a rotating shaft, the rod part having a small diameter part connected to the piston, and the rod part having a small diameter part connected to the piston, and a rod part having a small diameter part connected to the piston, and a rod part that is connected to the eccentric part. A compressor comprising a rod holding part having a large diameter part that fits together, the rod part and the rod holding part being engaged and connected by fixing the engaging part with an engaging piece. connecting rod.
したことを特徴とする請求項１記載の圧縮機の連接棒。(2) A connecting rod for a compressor according to claim 1, characterized in that a spacer is interposed between the rod portion and the rod holding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28924790A JPH04164174A (en) | 1990-10-26 | 1990-10-26 | Connecting rod for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28924790A JPH04164174A (en) | 1990-10-26 | 1990-10-26 | Connecting rod for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04164174A true JPH04164174A (en) | 1992-06-09 |
Family
ID=17740684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28924790A Pending JPH04164174A (en) | 1990-10-26 | 1990-10-26 | Connecting rod for compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04164174A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995011382A1 (en) * | 1993-10-19 | 1995-04-27 | Empresa Brasileira De Compressores S/A.-Embraco | A two-piece connecting rod for a reciprocating hermetic compressor |
| WO1998023862A1 (en) | 1996-11-26 | 1998-06-04 | Matsushita Refrigeration Company | Reciprocating compressor |
| WO1999057437A1 (en) * | 1998-05-04 | 1999-11-11 | Empresa Brasileira De Compressores S.A. - Embraco | A two-piece connecting rod for a reciprocating compressor and method for assembling a two-piece connecting rod |
| KR100412575B1 (en) * | 2002-01-23 | 2003-12-31 | 삼성광주전자 주식회사 | Connecting-rod apparatus for Hermetic compressor |
| KR100412581B1 (en) * | 2002-01-30 | 2003-12-31 | 삼성광주전자 주식회사 | Connecting-rod apparatus for Hermetic compressor |
| US6688854B2 (en) * | 1999-09-14 | 2004-02-10 | Sanyo Electric Co., Ltd. | Compression apparatus |
| JP2005133569A (en) * | 2003-10-28 | 2005-05-26 | Hitachi Ltd | Piston rod fastening structure of reciprocating compressor |
| KR100495059B1 (en) * | 2002-11-08 | 2005-06-14 | 엘지전자 주식회사 | Connecting rod for compressor |
| KR100856778B1 (en) * | 2006-04-26 | 2008-09-05 | 엘지전자 주식회사 | Connecting rod and compressor having the same |
| EP3190294A1 (en) * | 2015-12-29 | 2017-07-12 | Whirlpool S.A. | Two-parts telescopic connecting rod for alternative compressors and method of assembling two-parts telescopic connecting rod in alternative compressors |
-
1990
- 1990-10-26 JP JP28924790A patent/JPH04164174A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995011382A1 (en) * | 1993-10-19 | 1995-04-27 | Empresa Brasileira De Compressores S/A.-Embraco | A two-piece connecting rod for a reciprocating hermetic compressor |
| WO1998023862A1 (en) | 1996-11-26 | 1998-06-04 | Matsushita Refrigeration Company | Reciprocating compressor |
| US6382081B2 (en) | 1996-11-26 | 2002-05-07 | Matsushita Refrigeration Company | Reciprocating compressor |
| WO1999057437A1 (en) * | 1998-05-04 | 1999-11-11 | Empresa Brasileira De Compressores S.A. - Embraco | A two-piece connecting rod for a reciprocating compressor and method for assembling a two-piece connecting rod |
| KR100646326B1 (en) * | 1998-05-04 | 2006-11-17 | 월풀 에쎄.아. | A two-piece connecting rod for a reciprocating compressor and method for assembling a two-piece connecting rod |
| US6688854B2 (en) * | 1999-09-14 | 2004-02-10 | Sanyo Electric Co., Ltd. | Compression apparatus |
| KR100412575B1 (en) * | 2002-01-23 | 2003-12-31 | 삼성광주전자 주식회사 | Connecting-rod apparatus for Hermetic compressor |
| KR100412581B1 (en) * | 2002-01-30 | 2003-12-31 | 삼성광주전자 주식회사 | Connecting-rod apparatus for Hermetic compressor |
| KR100495059B1 (en) * | 2002-11-08 | 2005-06-14 | 엘지전자 주식회사 | Connecting rod for compressor |
| JP2005133569A (en) * | 2003-10-28 | 2005-05-26 | Hitachi Ltd | Piston rod fastening structure of reciprocating compressor |
| KR100856778B1 (en) * | 2006-04-26 | 2008-09-05 | 엘지전자 주식회사 | Connecting rod and compressor having the same |
| EP3190294A1 (en) * | 2015-12-29 | 2017-07-12 | Whirlpool S.A. | Two-parts telescopic connecting rod for alternative compressors and method of assembling two-parts telescopic connecting rod in alternative compressors |
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