JP2970021B2 - Compressor - Google Patents

Compressor

Info

Publication number
JP2970021B2
JP2970021B2 JP3067272A JP6727291A JP2970021B2 JP 2970021 B2 JP2970021 B2 JP 2970021B2 JP 3067272 A JP3067272 A JP 3067272A JP 6727291 A JP6727291 A JP 6727291A JP 2970021 B2 JP2970021 B2 JP 2970021B2
Authority
JP
Japan
Prior art keywords
drive plate
plate
rotary drive
shoe
piston
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
Application number
JP3067272A
Other languages
Japanese (ja)
Other versions
JPH04303183A (en
Inventor
学 杉浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyoda Jidoshokki Seisakusho KK
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 by Toyoda Jidoshokki Seisakusho KK filed Critical Toyoda Jidoshokki Seisakusho KK
Priority to JP3067272A priority Critical patent/JP2970021B2/en
Publication of JPH04303183A publication Critical patent/JPH04303183A/en
Application granted granted Critical
Publication of JP2970021B2 publication Critical patent/JP2970021B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、圧縮機の改良に関し、
特に、ピストンコンロッドと回転駆動板との連結に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a compressor,
In particular, it relates to the connection between the piston connecting rod and the rotary drive plate .

【0002】[0002]

【従来の技術】車両空調用などに好適な可変容量型揺動
板式圧縮機は、従来から種種提案されており実用にも供
されている。第3図はその一例を示したものである。図
において、圧縮機の外郭の一部を構成するシリンダブロ
ック1の前後にはフロントハウジング2及びリヤハウジ
ング3が結合されており、シリンダブロック1及びフロ
ントハウジング2には駆動軸4が回転可能に支承されて
いる。フロントハウジング2内の駆動軸4上には回転支
持体5が固着され、該回転支持体5の後面側に延出した
支持ア−ム6の先端部には長孔6aが貫設されている。
そして該長孔6aにはピン7がスライド可能に嵌入され
ており、同ピン7には回転駆動板8が傾動可能に連結さ
れている。
2. Description of the Related Art Various types of variable displacement oscillating plate compressors suitable for use in air conditioning of vehicles have been proposed and used in practice. FIG. 3 shows an example. In the drawing, a front housing 2 and a rear housing 3 are connected to the front and rear of a cylinder block 1 which forms a part of the outer shell of the compressor, and a drive shaft 4 is rotatably supported on the cylinder block 1 and the front housing 2. Have been. A rotary support 5 is fixed on the drive shaft 4 in the front housing 2, and a long hole 6 a is formed at a tip end of a support arm 6 extending to the rear surface side of the rotary support 5. .
A pin 7 is slidably fitted in the elongated hole 6a, and a rotary drive plate 8 is connected to the pin 7 in a tiltable manner.

【0003】回転支持体5の後端に隣接して駆動軸4上
にはスリ−ブ9が遊嵌され、コイルばね10により常に
回転支持体5側へ付勢されるとともに、スリ−ブ9の左
右両側に突設された枢軸9a(一方のみ図示)が回転駆
動板8の図示しない係合孔に嵌入されて、該回転駆動板
8は枢軸9aの周りを揺動しうるように支持されてい
る。
[0003] A sleeve 9 is loosely fitted on the drive shaft 4 adjacent to the rear end of the rotary support 5, and is always urged toward the rotary support 5 by a coil spring 10. A pivot 9a (only one is shown) protruding on both left and right sides of the rotary drive plate 8 is fitted into an engagement hole (not shown) of the rotary drive plate 8, and the rotary drive plate 8 is supported so as to be able to swing around the pivot 9a. ing.

【0004】回転駆動板8の後面側には揺動板11が相
対回転可能に支持され、かつ外縁部に設けた案内部11
aが通しボルト16と係合することにより自転が拘束さ
れるとともに、シリンダブロック1に貫設されたボア1
2内のピストン13と該揺動板11とはコンロッド14
により連節されている。したがって、駆動軸4の回転運
動が回転駆動板8を介して揺動板11の前後揺動に変換
され、ピストン13がボア12内を往復動することによ
り吸入室3aからボア12内へ吸入された冷媒ガスが圧
縮されつつ吐出室3bへ吐出される。そしてクランク室
2a内の圧力とボア12内の吸入圧力とのピストン13
を介した差圧に応じてピストン13のストロ−クが変動
し、揺動板11の傾角が変化する。なお、クランク室2
a内の圧力はリヤハウジング3の後端突出部内に配設さ
れた電磁制御弁機構15により冷房負荷に基づいて制御
される。
A swing plate 11 is rotatably supported on the rear side of the rotary drive plate 8 and has a guide portion 11 provided on an outer edge thereof.
a is engaged with the through bolt 16, the rotation is restricted, and the bore 1 penetrated through the cylinder block 1.
2 and the swinging plate 11 are connected to a connecting rod 14.
Is articulated by Therefore, the rotational motion of the drive shaft 4 is converted into the forward and backward swing of the swing plate 11 via the rotary drive plate 8, and the piston 13 is reciprocated in the bore 12, so that the piston 13 is sucked from the suction chamber 3 a into the bore 12. The refrigerant gas is discharged to the discharge chamber 3b while being compressed. The piston 13 of the pressure in the crank chamber 2a and the suction pressure in the bore 12
The stroke of the piston 13 fluctuates in accordance with the pressure difference through the diaphragm, and the tilt angle of the swing plate 11 changes. In addition, the crankcase 2
The pressure in a is controlled based on the cooling load by an electromagnetic control valve mechanism 15 disposed in the rear end protrusion of the rear housing 3.

【0005】[0005]

【発明が解決しようとする課題】しかして、この種の圧
縮機では、駆動軸4の回転に基づき自転を拘束された揺
動板11が回転駆動板8の傾角に従って前後に揺動し、
その揺動運動がコンロッド14を介してピストン13の
往復動に変換伝達されるようになされていた。つまり、
コンロッド14を介してピストン13を回転駆動板8に
作動連結するために揺動板11が使用され、コンロッド
14の球体継手14aをかしめ手段によって抱持すると
いう連結形態が採用されていた。しかし、図示の従来例
のようにコンロッド14の球体継手14aがかしめ手段
によって抱持されるものでは、圧縮機の運転に伴って揺
動板11とコンロッド14とのかしめ部に作用する
は、(ピストン及びコンロッドの往復慣性力)+(クラ
ンク室圧力と吸入圧力との差圧)となって上記連結形態
にとっては負荷が大きなものとなっていた。この傾向は
拘束運転時及びクランク室圧力が高い時ほど顕著であ
り、かしめ部に不測の破損をを生じた事例も報告されて
いる。勿論、揺動板11とコンロッド14との連節形態
はかしめのみが唯一の手段ではなく、薄板からなる保持
クリップ等を用いた提案も散見されるが、やはり強度的
な観点から決して満足すべきものとはいい難い。
However, in this type of compressor, the swinging plate 11 whose rotation is restricted based on the rotation of the drive shaft 4 swings back and forth in accordance with the tilt angle of the rotary drive plate 8,
The oscillating motion is converted and transmitted to the reciprocating motion of the piston 13 via the connecting rod 14 . That is,
The piston 13 is connected to the rotary drive plate 8 via the connecting rod 14.
A rocking plate 11 is used to operatively connect the connecting rod.
When holding the 14 ball joint 14a by caulking means
Such a connection form was adopted. However, the conventional example shown
It intended to be embraced by the spherical joint 14a painters tightening means of the connecting rod 14 as, rocking along with the operation of the compressor
Force acting on the crimped portion of the rotation plate 11 and the connecting rod 14
Is (reciprocating inertia force of piston and connecting rod) + (
Differential pressure between the ink chamber pressure and the suction pressure).
Was a heavy load for the company. This trend is remarkable as when higher time constraint operation and the crank chamber pressure, have also been reported cases resulted in unexpected damage caulked portion. Of course, caulking is not the only means for articulating the rocking plate 11 and the connecting rod 14, and there have been some proposals using holding clips made of thin plates. It is hard to say.

【0006】本発明は、回転駆動板とコンロッドとの連
節形態を改善して高強度化を図り、圧縮機の信頼性を向
上させることを解決すべき技術課題とするものである。
SUMMARY OF THE INVENTION An object of the present invention is to improve the articulation between a rotary drive plate and a connecting rod to increase the strength and improve the reliability of a compressor.

【0007】[0007]

【課題を解決するための手段】本発明は上記課題解決の
ため、ピストンはコンロッドを介して上記回転駆動板に
連結されるとともに、上記コンロッドの回転駆動板側に
は球体継手が設けられ、該球体継手を上記回転駆動板と
の間には球体継手を押圧する向きに支持する凹状球欠面
を備えたシューを上記回転駆動板との間で摺接可能に配
置し、該シューとは上記球体継手を挟んで対向するとと
もに、上記球体継手を牽引する向きに抱持する凹状球帯
面を備えた揺動部材を上記回転駆動板とともに揺動可能
に配置し、上記球体継手及びシューを回転駆動板及び揺
動部材との間で挟持するという新規な構成を採用してい
る。
According to the present invention , a piston is connected to the rotary drive plate via a connecting rod.
Connected to the rotary drive plate side of the connecting rod.
Is provided with a spherical joint, and the spherical joint is
Between the concave spherical concave surface that supports the spherical joint in the direction of pressing
Is provided so as to be slidable with the rotary drive plate.
And the shoe is opposed to the shoe via the spherical joint.
In addition, a concave spherical band for holding the spherical joint in a pulling direction.
Swing member with surface can be swung together with the rotary drive plate
And the ball joint and shoe are rotated and
It adopts a new configuration of sandwiching between moving members .

【0008】本発明の好適な形態として、コンロッドと
同球体継手とは個別的に製作され、揺動部材に設けられ
た凹状球帯面に装着後、両者はねじ結合(弛み止め)又
は溶接等により連結される。また、揺動部材とは別途に
球体継手を支持して回転駆動板と摺接するシューは、各
コンロッドごとに独立して配設することもできるが、す
べてのコンロッドに対応すべく複数の凹状球欠面を備え
た環板状に形成しても差支えない。そしてかかる環板状
のシューを用いる場合はこれを揺動部材と圧入嵌合さ
せ、回転駆動板との間には従来のようなスラスト軸受を
介装させることが有利である。
[0008] Suitable forms of the present invention, the connecting rod and the spherical joint is manufactured individually, provided in rocking member
After the mounting concave spherical zone surface, both have are connected by a screw connection (locking) or welding. Also, shoe separately sliding contact with the rotary drive plate supporting the spherical joint and the swing member can also be disposed independently for each connecting rod, a plurality to correspond to all of the connecting rod of the concave sphere It may be formed in an annular plate shape having a cut surface . Then such a case of using a ring-shaped shoe fitted pressed to as rocking member, between the rotary drive plate is advantageous to interposed thrust bearing, such as a conventional.

【0009】[0009]

【作用】本発明では揺動部材の凹状球帯面とシューの凹
状球欠面とでコンロッドの球体継手を抱持するとともに
揺動部材と回転駆動板とで球体継手及びシューを挟持す
る構成を採用することで従来のようなかしめ手段を使用
することなく回転駆動板とコンロッドとの連結形態を構
成することができる。したがって、連結部の高強度、高
精度化を達成することができる。また、上記球体継手を
押圧する向きに支持する凹状球欠面を備えたシューと揺
動部材との対向間隔を、例えば揺動部材を係止するスラ
ストワッシャなどによって微調節することにより、球体
継手の摺動摩擦抵抗値も安定した範囲に保つことができ
る。
According to the present invention, the concave spherical surface of the swing member and the concave surface of the shoe are used.
Holds the connecting rod sphere joint with
Spherical joint and shoe are clamped between swinging member and rotary drive plate
Uses conventional caulking means by adopting a configuration
Configuration of the connection between the rotary drive plate and the connecting rod
Can be achieved. Therefore, high strength, high
Accuracy can be achieved. Also, shoe and rocking with a concave spherical missing surface for supporting in a direction to press the spherical joint
By finely adjusting the distance between the moving member and the thrust washer that locks the swinging member, the sliding friction resistance value of the spherical joint can be maintained in a stable range.

【0010】[0010]

【実施例】以下、図に基づいて本発明の実施例を具体的
に説明する。なお、実施例中の圧縮機の基本的な構成、
機能については従来ととくに変わるところはないので、
同一の構成要素には同一の符号を付して詳しい説明は省
略する。本発明の第1実施例を示す図1において、揺
部材としての揺動板20はボス21とフランジ部22と
有し、中心部に貫設された大径孔には回転駆動板30
のボス部31と摺接嵌合するメタル軸受23が装着され
ている。また、上記フランジ部22には周方向等間隔に
複数(ボアと同数)の円孔が貫設されて、該円孔内にコ
ンロッド40の球体継手41を牽引する向きに抱持する
凹状球帯面24が形成されている。そして該球体継手4
1と回転駆動板30のフランジ部32との間には、該凹
状球帯面24と協同して該球体継手41を押圧する向き
に支持する凹状球欠面51を持つ円板形のシュー50が
介装され、該シュー50の背面は上記回転駆動板30の
フランジ部32表面とそれぞれ摺接可能に密合されてお
り、挟持された状態における該球体継手41の摺動摩擦
抵抗値は、例えば揺動板20を係止するスラストワッシ
ャ33の厚さ調節などにより加減される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. The basic configuration of the compressor in the embodiment,
Since there is no particular change in the function,
The same components are denoted by the same reference numerals, and detailed description is omitted. In Figure 1 showing a first embodiment of the present invention, rocking
The swing plate 20 as a member includes a boss 21 and a flange portion 22.
And a rotary driving plate 30
The metal bearing 23 which is fitted in sliding contact with the boss portion 31 is mounted. A plurality of (same as the number of bores) circular holes are provided in the flange portion 22 at equal intervals in the circumferential direction, and a concave spherical band that holds the spherical joint 41 of the connecting rod 40 in the direction in which the spherical joint 41 is pulled. Surface 24 is formed. And the spherical joint 4
A disc-shaped shoe 50 having a concave sphere lacking surface 51 for supporting the spherical joint 41 in a pressing direction in cooperation with the concave spherical band surface 24 is provided between the rotary driving plate 30 and the flange portion 32 of the rotary driving plate 30. The rear surface of the shoe 50 is tightly slidably contacted with the surface of the flange portion 32 of the rotary drive plate 30, and the sliding friction resistance of the spherical joint 41 in the sandwiched state is, for example, The thickness is adjusted by adjusting the thickness of the thrust washer 33 for locking the rocking plate 20.

【0011】上記揺動板20とコンロッド40との組付
けに際しては、予めコンロッド40を球体継手41と連
杆部42とに分割して製作し、連杆部42を上記揺動板
20の円孔に挿入したのち、両者をねじ結合又は溶接等
によって連結する。なお、ねじ結合を採用する場合は専
用バインダなどにより緩み止めを施すことが望ましい。
When assembling the rocking plate 20 and the connecting rod 40, the connecting rod 40 is previously divided into a spherical joint 41 and a connecting rod portion 42, and the connecting rod portion 42 is formed into a circle of the rocking plate 20. After being inserted into the hole, the two are connected by screw connection or welding. When screw connection is adopted, it is desirable to prevent loosening with a dedicated binder or the like.

【0012】上述の構成よりなる本圧縮機において、コ
ンロッド40に対する揺動板20の連節は、該揺動板2
0に貫設した円孔内に形成されてコンロッド40の球体
継手41を牽引する向きに抱持する凹状球帯面24と、
独立したシュ−50に形成されて該球体継手41を押圧
する向きに支持する凹状球欠面51とによって分掌せし
められており、該凹状球帯面24は十分な肉厚を有する
揺動板20のフランジ部22に機械加工によって形成し
うるので、高強度、高精度を同時に達成することができ
る。
In the compressor having the above-described structure, the articulation of the swing plate 20 with respect to the connecting rod 40 is controlled by the swing plate 2.
0, a concave spherical band surface 24 formed in a circular hole penetrating through to hold the ball joint 41 of the connecting rod 40 in a pulling direction.
The concave ball-shaped surface 24 is formed on an independent shoe 50 and supports the ball joint 41 in the pressing direction. Since it can be formed on the flange portion 22 by machining, high strength and high accuracy can be achieved at the same time.

【0013】図2は本発明の第2実施例を示すものであ
って、本実施例はシュ−60がすべてのコンロッド40
に対応すべく複数の凹状球欠面61を備えた環板状に形
成されている点で第1実施例のそれと相違する。なお図
示の構成では揺動板70のボス部71にシュ−60が圧
入され、該シュ−60の背面と回転駆動板80のフラン
ジ部8フランジ部82との間にスラスト軸受90が介装
されているが、該フランジ部82の表面にシュ−60を
直接密合して摺接させることも可能である。したがっ
て、本例においては第1実施例の機能に加えて部品点数
の省減と組付けの利便性を向上させうるという特長を付
随する。
FIG. 2 shows a second embodiment of the present invention.
This is different from that of the first embodiment in that it is formed in the shape of an annular plate having a plurality of concave spherical surface portions 61 in order to cope with the above. In the configuration shown in the figure, a shoe 60 is press-fitted into the boss 71 of the swinging plate 70, and a thrust bearing 90 is interposed between the rear surface of the shoe 60 and the flange 8 of the rotary drive plate 80. However, it is also possible to directly bring the shoe 60 into close contact with the surface of the flange portion 82 for sliding contact. Therefore, in this embodiment, in addition to the functions of the first embodiment, there are accompanying features that the number of parts can be reduced and the convenience of assembling can be improved.

【0014】[0014]

【発明の効果】以上、詳述したように本発明は、揺動部
材に形成されてコンロッドの球体継手を牽引する向きに
抱持する凹状球帯面と、シューに形成されて該球体継手
を押圧する向きに支持する凹状球欠面とによって、コン
ロッドとの連節を分掌せしめるように構成したものであ
るから、在来のかしめ継手や保持クリップ等とは比較に
ならない高強度を堅持して圧縮機の信頼性を向上させる
ことができる。また、上記凹状球帯面は機械加工により
容易、かつ高精度に形成でき、球体継手の摺動摩擦抵抗
値を常に安定した範囲に保つことができる。
Effect of the Invention] While the present invention as described in detail, rocking unit
A concave spherical zone surface for holding the direction of pulling the spherical joint of the connecting rod is made form the wood, by the concave spherical missing surface for supporting the orientation is formed on the shoe pressing the spheres joints, communicating with the connecting rod Since the knots are configured to be separated, it is possible to improve the reliability of the compressor by maintaining high strength incomparable with conventional caulking joints, holding clips and the like. Further, the concave spherical zone surface easily by machining, and can in formed with high precision, it is possible to keep the sliding friction resistance of the spherical joint always stable range.

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

【図1】本発明の第1実施例に係る可変容量型揺動板式
圧縮機を示す一部切欠き断面図
FIG. 1 is a partially cutaway sectional view showing a variable displacement rocking plate compressor according to a first embodiment of the present invention.

【図2】本発明の第2実施例に係る可変容量型揺動板式
圧縮機を示す一部切欠き断面図
FIG. 2 is a partially cutaway sectional view showing a variable displacement rocking plate compressor according to a second embodiment of the present invention.

【図3】従来の可変容量型揺動板式圧縮機の全容を示す
断面図
FIG. 3 is a cross-sectional view showing the entire configuration of a conventional variable displacement rocking plate compressor.

【符号の説明】[Explanation of symbols]

4は駆動軸、12はシリンダボア、13はピストン、2
0、70は揺動板、24は凹状球帯面、30、80は回
転駆動板、40はコンロッド、41は球体継手、50、
60はシュ−、51、61は凹状球欠面。
4 is a drive shaft, 12 is a cylinder bore, 13 is a piston, 2
0 and 70 are rocking plates, 24 is a concave spherical belt surface, 30 and 80 are rotary driving plates, 40 is a connecting rod, 41 is a spherical joint, 50,
Reference numeral 60 denotes a shoe, and reference numerals 51 and 61 denote concave spheres.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 駆動軸の周囲に複数個のシリンダボアを
配置して各ボアにピストンを直動自在に嵌装し、該ボア
の圧縮室側の一端は該ピストンの直動を介して吸入室又
は吐出室と選択的に連通可能とし、該ボアの他端はクラ
ンク室と連通せしめるとともに、該クランク室には上記
駆動軸と共に傾斜状態で回転する回転駆動板を設け、該
回転駆動板の回転により上記ピストンを往復動させる圧
縮機において、上記ピストンはコンロッドを介して上記
回転駆動板に連結されるとともに、上記コンロッドの回
転駆動板側には球体継手が設けられ、該球体継手と上記
回転駆動板との間には球体継手を押圧する向きに支持す
る凹状球欠面を備えたシューを上記回転駆動板との間で
摺接可能に配置し、該シューとは上記球体継手を挟んで
対向するとともに、上記球体継手を牽引する向きに抱持
する凹状球帯面を備えた揺動部材を上記回転駆動板とと
もに揺動可能に配置し、上記球体継手及びシューを回転
駆動板及び揺動部材との間で挟持したことを特徴とする
圧縮機。
A plurality of cylinder bores are arranged around a drive shaft, and a piston is fitted in each bore so as to be able to move linearly. One end of the bore on the compression chamber side is connected to the suction chamber through the linear movement of the piston. or the discharge chamber and selectively can communicate, the other end of the bore together occupy passed, communicating with the crank chamber, a rotary driving plate which rotates in an inclined state to the drive shaft and co-located in the crank chamber, the
Pressure for reciprocating the piston by rotation of the rotary drive plate
Oite the compressor, the piston via a connecting rod the
While being connected to the rotary drive plate,
A spherical joint is provided on the rolling drive plate side, and the spherical joint
Support the spherical joint between the rotary drive plate and the pressing direction.
Between the rotary drive plate and the shoe with the concave spherical concave surface
Arranged so that it can be slid and contacted with the shoe with the spherical joint
Opposing and holding the above ball joint in the direction to pull
A rocking member having a concave spherical band surface to
The ball joint and the shoe are rotated so that they can swing
Characterized by being sandwiched between a driving plate and a swinging member
Compressor.
JP3067272A 1991-03-29 1991-03-29 Compressor Expired - Lifetime JP2970021B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3067272A JP2970021B2 (en) 1991-03-29 1991-03-29 Compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3067272A JP2970021B2 (en) 1991-03-29 1991-03-29 Compressor

Publications (2)

Publication Number Publication Date
JPH04303183A JPH04303183A (en) 1992-10-27
JP2970021B2 true JP2970021B2 (en) 1999-11-02

Family

ID=13340161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3067272A Expired - Lifetime JP2970021B2 (en) 1991-03-29 1991-03-29 Compressor

Country Status (1)

Country Link
JP (1) JP2970021B2 (en)

Also Published As

Publication number Publication date
JPH04303183A (en) 1992-10-27

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