JP2010144589A - Link mechanism between rotor and swash plate of variable displacement compressor - Google Patents

Link mechanism between rotor and swash plate of variable displacement compressor Download PDF

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JP2010144589A
JP2010144589A JP2008321655A JP2008321655A JP2010144589A JP 2010144589 A JP2010144589 A JP 2010144589A JP 2008321655 A JP2008321655 A JP 2008321655A JP 2008321655 A JP2008321655 A JP 2008321655A JP 2010144589 A JP2010144589 A JP 2010144589A
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swash plate
rotor
arm
pin
drive shaft
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JP5413823B2 (en
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Tomohiro Iguchi
智博 井口
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Sanden Corp
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Sanden Corp
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Priority to PCT/JP2009/006964 priority patent/WO2010070911A1/en
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    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1054—Actuating elements
    • F04B27/1072—Pivot mechanisms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a link mechanism between the rotor and swash plate of a variable displacement compressor with abrasion suppressed. <P>SOLUTION: In this link mechanism 13, an arm 10 engaged with the rotor 2 is provided, an engagement section for the arm 10 and the swash plate 3 has a sandwiched section formed by one of the arm 10 and swash plate 3, a pair of sandwiching sections formed by the other, and a first pin 12 having a center pressure-fitted and fixed to a through-hole formed in the sandwiched section and both ends slidably fitted to a pair of through-holes formed in the sandwiching section, and an engagement section for the arm 10 and rotor 2 has a sandwiched section formed by one of the arm 10 and rotor 2, a pair of sandwiching section formed by the other, and a second pin 11 having both ends slidably fitted in a pair of through-holes formed in the sandwiching section. The shapes of the through-holes in the sandwiching section of a fitting section on the side of a point of application of a resultant force F of a compression reaction force with respect to the swash plate 3 in the fitting section between the first pin 12 and the sandwiching sections, and the shapes of the pins fitted in the through holes, are formed into a tapered shape. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、可変容量圧縮機のローターと斜板のリンク機構に関するものである。 The present invention relates to a link mechanism between a rotor and a swash plate of a variable capacity compressor.

駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備える可変容量圧縮機の、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構であって、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを備えるリンク機構が、特許文献１等に開示されている。
上記リンク機構として、アームと斜板との係合部が、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部が、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有することを特徴とするリンク機構が、従来から使用されている。係る構造のリンク機構においては、第１ピンと挟持部間の嵌合部及び第２ピンと挟持部間の嵌合部は、従来、直径が一定の貫通穴と当該貫通穴に嵌合する直径が一定のピンとによって形成されていた。
特開２００２−１８８５６５号公報 A drive shaft, a rotor fixed to the drive shaft, a swash plate supported by the drive shaft so that the tilt angle can be varied, a piston reciprocated by a drive shaft rotating through the swash plate, and a piston slidable A link mechanism for connecting a rotor and a swash plate so as to be relatively non-rotatable around a drive shaft while allowing a change in tilt angle of the swash plate of a variable capacity compressor including a cylinder block having an inserted bore, the drive shaft A rotor that engages with the swash plate so as to be rotatable about a first axis perpendicular to the plane formed by the center axis of the swash plate and the top dead center of the swash plate and is rotatable about a second axis perpendicular to the plane. A link mechanism that includes an arm that engages with the lens is disclosed in Patent Document 1 and the like.
As the above link mechanism, the engaging portion between the arm and the swash plate is formed in the sandwiched portion formed by one of the arm or the swash plate, the pair of sandwiched portions formed by the other of the arm or the swash plate, and the sandwiched portion. The center portion is press-fitted and fixed to the formed through-hole, and the first pin is fitted to the pair of through-holes formed in the holding portion so that both ends are slidable, and the engagement portion between the arm and the rotor is A clamped portion formed by one of the arm or the rotor, a pair of clamped portions formed by the other of the arm or the rotor, and a central portion is press-fitted and fixed in a through hole formed in the clamped portion and formed in the clamped portion 2. Description of the Related Art Conventionally, a link mechanism having a second pin that is slidably fitted at both ends into a pair of formed through holes has been used. In the link mechanism having such a structure, the fitting portion between the first pin and the sandwiching portion and the fitting portion between the second pin and the sandwiching portion conventionally have a constant diameter and a constant diameter that fits into the through hole. And was formed by pins.
JP 2002-188565 A

駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備え、リンク機構は、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを有する可変容量圧縮機においては、斜板に対する圧縮反力の合力の着力点は、斜板上死点近傍に在り、且つ駆動軸の中心軸線と斜板の上死点とにより形成される平面に関して、斜板回転方向微小前方に在る。
この結果、アームと斜板との係合部が、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部が、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有することを特徴とするリンク機構においては、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部が圧縮反力の大部分を受けることになり、また第２ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部が圧縮反力の大部分を受けることになる。
従来のリンク機構では、第１ピンと挟持部間の嵌合部及び第２ピンと挟持部間の嵌合部は、従来、直径が一定の貫通穴と当該貫通穴に嵌合する直径が一定のピンとによって形成されていたので、圧縮反力がそのまま貫通穴とピンとの摺接面に垂直に印加されて前記嵌合部に大きな面圧が発生し、前記嵌合部が磨耗して斜板運動が不安定化し、圧縮機性能が低下する可能性がある。
本発明は上記問題に鑑みてなされたものであり、駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備える可変容量圧縮機の、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構であって、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを備え、アームと斜板との係合部は、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部は、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有するリンク機構において、リンク機構の磨耗を抑制する手段を提供することを目的とする。 The drive shaft, the rotor fixed to the drive shaft, the swash plate supported by the drive shaft so that the tilt angle can be varied, and the rotor and the swash plate cannot be relatively rotated around the drive shaft while allowing the tilt angle of the swash plate to be varied. A link mechanism that connects, a piston that is reciprocated by a drive shaft that rotates via a swash plate, and a cylinder block that has a bore into which the piston is slidably inserted. The link mechanism is a central axis of the drive shaft And the top dead center of the swash plate engage with the swash plate so as to be rotatable about a first axis perpendicular to the plane and engage with the rotor so as to be rotatable about a second axis perpendicular to the plane. In a variable capacity compressor having an arm that performs this, the point of application of the resultant force of the compression reaction force on the swash plate is in the vicinity of the top dead center of the swash plate and is formed by the center axis of the drive shaft and the top dead center of the swash plate Swash plate rotation direction slightly forward That.
As a result, the engaging portion between the arm and the swash plate is formed in the sandwiched portion formed by one of the arm or the swash plate, the pair of sandwiched portions formed by the other of the arm or the swash plate, and the sandwiched portion. The center portion is press-fitted and fixed to the through hole, and the first pin is fitted in a pair of through holes formed in the holding portion so that both ends are slidable. The engaging portion between the arm and the rotor is the arm Alternatively, a sandwiched portion formed by one of the rotors, a pair of sandwiched portions formed by the other of the arm or the rotor, and a central portion are press-fitted and fixed in a through hole formed in the sandwiched portion and formed in the sandwiched portion. In the link mechanism having a second pin that is slidably fitted to both ends of the pair of through holes, the compression reaction force against the swash plate in the fitting portion between the first pin and the sandwiching portion The fitting part on the side of the resultant force will receive most of the compression reaction force, In the fitting portion between the second pin and the clamping portion, the fitting portion of the force applied point side of the resultant force of the compression reaction force against the swash plate will receive most of the compression reaction force.
In the conventional link mechanism, the fitting portion between the first pin and the sandwiching portion and the fitting portion between the second pin and the sandwiching portion are conventionally a through-hole having a constant diameter and a pin having a constant diameter that fits into the through-hole. Therefore, a compression reaction force is applied as it is perpendicularly to the sliding contact surface between the through hole and the pin, and a large surface pressure is generated in the fitting portion, and the fitting portion is worn and swash plate motion is caused. It may become unstable and reduce the compressor performance.
The present invention has been made in view of the above problems, and includes a drive shaft, a rotor fixed to the drive shaft, a swash plate that is supported by the drive shaft so as to be capable of changing the inclination angle, and a drive shaft that rotates through the swash plate. Of a variable capacity compressor comprising a piston reciprocated by a cylinder and a cylinder block having a bore into which the piston is slidably inserted, while allowing the rotor and the swash plate to move around the drive shaft while allowing the tilt angle of the swash plate to vary. A link mechanism that is connected so as not to be relatively rotatable, and is engaged with the swash plate so as to be rotatable about a first axis perpendicular to a plane formed by the center axis of the drive shaft and the top dead center of the swash plate. An arm that engages with the rotor so as to be rotatable about a second axis perpendicular to the plane is provided, and an engaging portion between the arm and the swash plate includes a sandwiched portion formed by one of the arm and the swash plate, an arm or a slant A pair of clamping parts formed by the other side of the plate and the clamped parts The center portion is press-fitted and fixed to the through-hole formed in the first and second pins slidably fitted into a pair of through-holes formed in the holding portion, and the arm and the rotor are engaged with each other. The portion includes a sandwiched portion formed by one of the arm or the rotor, a pair of sandwiched portions formed by the other of the arm or the rotor, and a center portion that is press-fitted and fixed in a through hole formed in the sandwiched portion. An object of the present invention is to provide means for suppressing wear of a link mechanism in a link mechanism having a second pin that is slidably fitted into a pair of through-holes formed at both ends.

上記課題を解決するために、本発明においては、駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備える可変容量圧縮機の、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構であって、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを備え、アームと斜板との係合部は、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部は、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有するリンク機構において、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とが、テーパー形状であることを特徴とする可変容量圧縮機のローターと斜板のリンク機構を提供する。
本発明に係るリンク機構においては、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とを、テーパー形状としたので、前記嵌合部が圧縮反力の大部分を受けても、ピンと穴との摺接部において圧縮反力が摺接面に対する垂直方向成分と接線方向成分とに分散され、摺接面の面圧が従来に比べて減少する。この結果、リンク機構のアームと斜板の係合部の磨耗が従来に比べて抑制される。 In order to solve the above-described problems, in the present invention, a drive shaft, a rotor fixed to the drive shaft, a swash plate supported by the drive shaft so as to be capable of changing the tilt angle, and a drive shaft rotating through the swash plate are provided. A variable capacity compressor having a piston that is driven reciprocally and a cylinder block having a bore in which the piston is slidably inserted, while allowing the rotor and the swash plate to move relative to each other around the drive shaft while allowing the tilt angle of the swash plate to vary. A link mechanism that is non-rotatably connected, and engages the swash plate so as to be rotatable about a first axis perpendicular to a plane formed by the center axis of the drive shaft and the top dead center of the swash plate, and the plane And an engaging portion between the arm and the swash plate, a clamped portion formed by one of the arm or the swash plate, an arm or the swash plate A pair of clamping parts formed by the other of the The center portion is press-fitted and fixed to the through-hole formed in the first and second pins slidably fitted into a pair of through-holes formed in the holding portion, and the arm and the rotor are engaged with each other. The portion includes a sandwiched portion formed by one of the arm or the rotor, a pair of sandwiched portions formed by the other of the arm or the rotor, and a center portion that is press-fitted and fixed in a through hole formed in the sandwiched portion. In a link mechanism having a second pin that is slidably fitted at both ends into a pair of through holes formed in the inner part, the resultant force of the compression reaction force on the swash plate in the fitting part between the first pin and the sandwiching part A link mechanism between a rotor and a swash plate of a variable capacity compressor, wherein the fitting portion on the side of the force applying point has a tapered shape of the through-hole shape of the clamping portion and the pin shape fitted to the through-hole. provide.
In the link mechanism according to the present invention, in the fitting portion between the first pin and the holding portion, the through hole shape of the holding portion and the through hole of the fitting portion on the application point side of the resultant force of the compression reaction force against the swash plate Since the pin shape to be fitted to the taper shape is used, even if the fitting portion receives most of the compression reaction force, the compression reaction force is perpendicular to the sliding contact surface at the sliding contact portion between the pin and the hole. And the tangential direction component, and the surface pressure of the slidable contact surface is reduced as compared with the conventional case. As a result, wear of the engaging portion between the arm of the link mechanism and the swash plate is suppressed as compared with the conventional case.

本発明の好ましい態様においては、第２ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とがテーパー形状である。
上記構成により、リンク機構のアームとローターの係合部の磨耗が従来に比べて抑制される。 In a preferred aspect of the present invention, in the fitting portion between the second pin and the sandwiching portion, the fitting portion on the side of the application point of the resultant force of the compression reaction force on the swash plate, and the through hole shape of the sandwiching portion and the through hole The pin shape to be fitted is a taper shape.
With the above configuration, the wear of the engaging portion between the arm of the link mechanism and the rotor is suppressed as compared with the related art.

本発明においては、駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備え、リンク機構は、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを有し、アームと斜板との係合部は、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部は、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有する可変容量圧縮機であって、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とが、テーパー形状であることを特徴とする可変容量圧縮機を提供する。
本発明に係る可変容量圧縮機においては、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とを、テーパー形状としたので、前記嵌合部が圧縮反力の大部分を受けても、ピンと穴との摺接部において圧縮反力が摺接面に対する垂直方向成分と接線方向成分とに分散され、摺接面の面圧が従来に比べて減少する。この結果、リンク機構のアームと斜板の係合部の磨耗が従来に比べて抑制される。 In the present invention, the drive shaft, the rotor fixed to the drive shaft, the swash plate supported by the drive shaft so that the tilt angle can be varied, and the rotor and the swash plate are rotated around the drive shaft while allowing the tilt angle of the swash plate to be varied. A link mechanism that is coupled so as not to be relatively rotatable, a piston that is reciprocally driven by a drive shaft that rotates via a swash plate, and a cylinder block that has a bore into which the piston is slidably inserted. Engage the swash plate to be rotatable about a first axis perpendicular to the plane formed by the center axis of the drive shaft and the top dead center of the swash plate, and to be rotatable about a second axis perpendicular to the plane. The arm and the swash plate are engaged with each other by a clamped portion formed by one of the arm or the swash plate and a pair of sandwiched portions formed by the other of the arm or the swash plate. The center part is press-fitted into the through hole formed in the clamped part. And a first pin whose both ends are slidably fitted in a pair of through-holes formed in the holding portion, and the engaging portion between the arm and the rotor is a cover formed by one of the arm or the rotor. The clamping part, the pair of clamping parts formed by the other of the arm or the rotor, and the center part are press-fitted and fixed in the through holes formed in the clamped part, and both ends are formed in the pair of through holes formed in the clamping part. A variable capacity compressor having a second pin that is slidably fitted, wherein the fitting portion on the force application point side of the resultant force of the compression reaction force on the swash plate in the fitting portion between the first pin and the sandwiching portion The variable capacity compressor is characterized in that the through hole shape of the sandwiching portion and the pin shape fitted into the through hole are tapered.
In the variable capacity compressor according to the present invention, in the fitting portion between the first pin and the sandwiching portion, the through hole shape of the sandwiching portion of the fitting portion on the side where the resultant force of the compression reaction force against the swash plate is applied, and Since the pin shape fitted into the through hole is tapered, the compression reaction force is perpendicular to the sliding contact surface at the sliding contact portion between the pin and the hole even if the fitting portion receives most of the compression reaction force. Dispersed into the directional component and the tangential component, the surface pressure of the slidable contact surface is reduced as compared with the conventional case. As a result, wear of the engaging portion between the arm of the link mechanism and the swash plate is suppressed as compared with the conventional case.

本発明により、可変容量圧縮機のローターと斜板との間のリンク機構の磨耗が抑制される。 According to the present invention, wear of the link mechanism between the rotor and the swash plate of the variable capacity compressor is suppressed.

本発明の実施例に係る可変容量圧縮機のローターと斜板との間のリンク機構を説明する。
図１に示すように、可変容量斜板式圧縮機Ａは、駆動軸１と、駆動軸１に固定されたローター２と、傾角変動可能に駆動軸１に支持された斜板３とを備えている。斜板３の周縁部を挟持する一対のシュー４を介して斜板３に係留されたピストン５が、シリンダブロック６に形成されたボア６ａに摺動可能に嵌合している。駆動軸１、ローター２、斜板３を収容するフロントハウジング７が配設されている。吸入室と吐出室とを形成するシリンダヘッド８が配設されている。シリンダブロック６とシリンダヘッド８とにより弁板９が挟持されている。シリンダブロック６、フロントハウジング７、シリンダヘッド８、弁板９は一体に組み付けられている。駆動軸１はフロントハウジング７とシリンダブロック６とにより回転可能に支持されている。 A link mechanism between a rotor and a swash plate of a variable capacity compressor according to an embodiment of the present invention will be described.
As shown in FIG. 1, the variable capacity swash plate compressor A includes a drive shaft 1, a rotor 2 fixed to the drive shaft 1, and a swash plate 3 supported on the drive shaft 1 so as to be capable of varying the tilt angle. Yes. A piston 5 moored to the swash plate 3 via a pair of shoes 4 sandwiching the peripheral edge portion of the swash plate 3 is slidably fitted to a bore 6a formed in the cylinder block 6. A front housing 7 that houses the drive shaft 1, the rotor 2, and the swash plate 3 is disposed. A cylinder head 8 that forms a suction chamber and a discharge chamber is disposed. A valve plate 9 is held between the cylinder block 6 and the cylinder head 8. The cylinder block 6, the front housing 7, the cylinder head 8, and the valve plate 9 are assembled together. The drive shaft 1 is rotatably supported by a front housing 7 and a cylinder block 6.

図１、２に示すように、ローター２から斜板３へ向けて伸びる一対のローターアーム２ａに円形貫通穴２ｂ、２ｃが形成されている。円形貫通穴２ｂ、２ｃは、駆動軸１の中心軸線Ｘと斜板３の上死点Ｐとにより形成される平面に直交して、同軸に延在している。
斜板３からローター２へ向けて伸びる単一の斜板アーム３ａに円形貫通穴３ｂが形成されている。円形貫通穴３ｂは、駆動軸１の中心軸線Ｘと斜板３の上死点Ｐとにより形成される平面に直交して延在している。
ローターアーム２ａと斜板アーム３ａとを連結するリンクアーム１０が配設されている。リンクアーム１０の一端部に円形貫通穴１０ａが形成され、リンクアーム１０の二股に分かれた他端部の一方に円形貫通穴１０ｂが他方に漏斗状の円形テーパー貫通穴１０ｃが形成されている。円形テーパー貫通穴１０ｃの直径は、円形貫通穴１０ｂから遠ざかる方向ヘ向けて減少している。円形貫通穴１０ｂと漏斗状の円形テーパー貫通穴１０ｃとは同軸に延在している。
一対のローターアーム２ａはリンクアーム１０の前記一端部を挟持しており、リンクアーム１０の二股に分かれた他端部は斜板アーム３ａを挟持している。 As shown in FIGS. 1 and 2, circular through holes 2 b and 2 c are formed in a pair of rotor arms 2 a extending from the rotor 2 toward the swash plate 3. The circular through holes 2b and 2c extend coaxially and perpendicularly to a plane formed by the center axis X of the drive shaft 1 and the top dead center P of the swash plate 3.
A circular through hole 3b is formed in a single swash plate arm 3a extending from the swash plate 3 toward the rotor 2. The circular through hole 3b extends perpendicular to a plane formed by the central axis X of the drive shaft 1 and the top dead center P of the swash plate 3.
A link arm 10 for connecting the rotor arm 2a and the swash plate arm 3a is provided. A circular through hole 10a is formed at one end of the link arm 10, a circular through hole 10b is formed at one end of the other end of the link arm 10 divided into two branches, and a funnel-shaped circular tapered through hole 10c is formed at the other. The diameter of the circular tapered through hole 10c decreases toward the direction away from the circular through hole 10b. The circular through hole 10b and the funnel-shaped circular tapered through hole 10c extend coaxially.
The pair of rotor arms 2a sandwich the one end of the link arm 10, and the other end of the link arm 10 divided into two branches sandwiches the swash plate arm 3a.

全長に亙って直径が一定のピン１１の中央部が円形貫通穴１０ａに圧入固定されると共に両端部が円形貫通穴２ｂ、２ｃに相対摺動可能に嵌合している。ピン１１の中心軸線１１Ｘは駆動軸１の中心軸線Ｘと斜板３の上死点Ｐとにより形成される平面に直交して延在している。
ピン１２の中央部が円形貫通穴３ｂに圧入固定されると共に中央部と同一直径の一端部が円形貫通穴１０ｂに相対摺動可能に嵌合し、円錐台状にテーパーした他端部が漏斗状の円形テーパー貫通穴１０ｃに相対摺動可能に嵌合している。他端部の直径は中央部から遠ざかる方向へ向けて減少している。ピン１２の中心軸線１２Ｘは駆動軸１の中心軸線Ｘと斜板３の上死点Ｐとにより形成される平面に直交して延在している。
ローターアーム２ａ、斜板アーム３ａ、リンクアーム１０、ピン１１、１２によりリンク機構１３が形成されている。リンク機構１３は、斜板３の傾角変動を許容しつつローター２と斜板３とを駆動軸１回りに相対回転不能に連結している。 The central portion of the pin 11 having a constant diameter over the entire length is press-fitted and fixed in the circular through hole 10a, and both ends are fitted in the circular through holes 2b and 2c so as to be slidable relative to each other. A central axis 11X of the pin 11 extends perpendicular to a plane formed by the central axis X of the drive shaft 1 and the top dead center P of the swash plate 3.
The center portion of the pin 12 is press-fitted and fixed in the circular through hole 3b, and one end portion having the same diameter as the center portion is fitted in the circular through hole 10b so as to be slidable relative to the other end portion. Is fitted to the circular tapered through hole 10c in a slidable manner. The diameter of the other end portion decreases in a direction away from the central portion. A central axis 12X of the pin 12 extends perpendicular to a plane formed by the central axis X of the drive shaft 1 and the top dead center P of the swash plate 3.
A link mechanism 13 is formed by the rotor arm 2 a, the swash plate arm 3 a, the link arm 10, and the pins 11 and 12. The link mechanism 13 connects the rotor 2 and the swash plate 3 around the drive shaft 1 so as not to rotate relative to each other while allowing a change in the tilt angle of the swash plate 3.

可変容量斜板式圧縮機Ａにおいては、斜板３は図２の白抜矢印方向に回転する。斜板３の回転に伴ってピストン５がボア６ａ内を往復動し、ボア６ａ内へガスを吸引し、ボア６ａ内のガスを圧縮する。ボア６ａ内のガスを圧縮する際に発生する圧縮反力は、斜板３に印加され、斜板３からピン１２を介してリンクアーム１０に伝達され、リンクアーム１０からピン１１を介してローター２に伝達され、ローター２からフロントハウジング７に伝達される。
可変容量斜板式圧縮機Ａにおいては、図１、２に示すように、斜板３に対する圧縮反力の合力Ｆの着力点は、斜板上死点Ｐ近傍に在り、且つ駆動軸１の中心軸線Ｘと斜板３の上死点Ｐとにより形成される平面に関して、斜板回転方向微小前方に在る。この結果、ピン１２とリンクアーム１０の二股に分かれた他端部間の摺動嵌合部中の、斜板３に対する圧縮反力の合力Ｆの着力点側の摺動嵌合部が圧縮反力の大部分を受けることになる。
可変容量斜板式圧縮機Ａのリンク機構１３においては、ピン１２とリンクアーム１０の二股に分かれた他端部間の摺動嵌合部中の、斜板３に対する圧縮反力の合力Ｆの着力点側の嵌合部の、リンクアーム貫通穴１０ｃの形状と当該貫通穴に嵌合するピン１２の他端部形状とを、テーパー形状としたので、前記嵌合部が圧縮反力の大部分を受けても、ピン１２の他端部と貫通穴１０ｃとの摺接部において圧縮反力が摺接面に対する垂直方向成分と接線方向成分とに分散され、摺接面の面圧が従来に比べて減少する。この結果、リンク機構１３のリンクアーム１０と斜板３の係合部の磨耗が従来に比べて抑制される。 In the variable capacity swash plate compressor A, the swash plate 3 rotates in the direction of the white arrow in FIG. As the swash plate 3 rotates, the piston 5 reciprocates in the bore 6a, sucks gas into the bore 6a, and compresses the gas in the bore 6a. A compression reaction force generated when the gas in the bore 6a is compressed is applied to the swash plate 3 and transmitted from the swash plate 3 to the link arm 10 through the pin 12, and from the link arm 10 to the rotor through the pin 11. 2 and transmitted from the rotor 2 to the front housing 7.
In the variable capacity swash plate compressor A, as shown in FIGS. 1 and 2, the resultant force F of the compression reaction force against the swash plate 3 is in the vicinity of the top dead center P of the swash plate and the center of the drive shaft 1. With respect to the plane formed by the axis X and the top dead center P of the swash plate 3, it is slightly in front of the swash plate rotation direction. As a result, in the sliding fitting portion between the other end portion of the pin 12 and the link arm 10 which is divided into two forks, the sliding fitting portion on the application point side of the resultant force F of the compression reaction force against the swash plate 3 is compressed. You will receive most of the power.
In the link mechanism 13 of the variable capacity swash plate type compressor A, the applied force of the resultant force F of the compression reaction force on the swash plate 3 in the sliding fitting portion between the pin 12 and the other end portion of the link arm 10 which is divided into two forks. Since the shape of the link arm through hole 10c and the shape of the other end of the pin 12 fitted into the through hole of the point side fitting portion are tapered, the fitting portion has a large portion of the compression reaction force. The compression reaction force is dispersed into the vertical component and the tangential component with respect to the sliding contact surface at the sliding contact portion between the other end portion of the pin 12 and the through hole 10c, and the surface pressure of the sliding contact surface is conventionally increased. Compared to decrease. As a result, wear of the engaging portion between the link arm 10 of the link mechanism 13 and the swash plate 3 is suppressed as compared with the conventional case.

可変容量斜板式圧縮機Ａのリンク機構１３において、ピン１２の他端部とリンクアーム貫通穴１０ｃとの摺動嵌合部を上述のように構成するのに加えて、ピン１２の他端部に対峙するピン１１の端部とリンクアーム貫通穴１０ｃに対峙するローターアーム貫通穴２ｃとの摺動嵌合部を、円錐台形状にテーパーしたピン１１の端部と、漏斗状の円形テーパー貫通穴２ｃとによって形成しても良い。圧縮反力の大部分を受ける前記摺動嵌合部の摺接面の面圧が従来に比べて低減し、リンク機構１３のリンクアーム１０とローター２の係合部の磨耗が従来に比べて抑制される。 In the link mechanism 13 of the variable capacity swash plate compressor A, in addition to configuring the sliding fitting portion between the other end portion of the pin 12 and the link arm through hole 10c as described above, the other end portion of the pin 12 is provided. A sliding fitting portion between the end portion of the pin 11 facing the rotor arm and the rotor arm through hole 2c facing the link arm through hole 10c has an end portion of the pin 11 tapered in a truncated cone shape, and a funnel-shaped circular tapered passage. You may form by the hole 2c. The surface pressure of the sliding contact surface of the sliding fitting portion that receives most of the compression reaction force is reduced as compared with the conventional case, and the wear of the engaging portion between the link arm 10 of the link mechanism 13 and the rotor 2 is reduced as compared with the conventional case. It is suppressed.

リンクアーム１０の二股の一端部で単一のローターアーム２ａを挟持し、或いは一対の斜板アーム３ａでリンクアーム１０の単一の他端部を挟持しても良い。
本発明は、可変容量斜板式圧縮機のローターと斜板のリンク機構に適用可能であるのみならず、斜板によって揺動駆動される揺動板にピストンが係留される可変容量揺動板式圧縮機のローターと斜板のリンク機構にも適用可能である。 The single rotor arm 2a may be sandwiched by one end of the link arm 10 or the other end of the link arm 10 may be sandwiched by a pair of swash plate arms 3a.
The present invention is not only applicable to a rotor-swash plate link mechanism of a variable displacement swash plate compressor, but also a variable displacement swing plate compression in which a piston is moored to a swing plate driven to swing by the swash plate. It can also be applied to the linkage mechanism of the rotor and swash plate of the machine.

本発明の実施例に係るローターと斜板のリンク機構を備える可変容量斜板式圧縮機の側断面図である。1 is a side sectional view of a variable capacity swash plate compressor including a rotor-swash plate link mechanism according to an embodiment of the present invention. 本発明の実施例に係る可変容量斜板式圧縮機のローターと斜板のリンク機構の外観斜視図である。1 is an external perspective view of a link mechanism between a rotor and a swash plate of a variable capacity swash plate compressor according to an embodiment of the present invention.

符号の説明Explanation of symbols

Ａ 可変容量斜板式圧縮機
１ 駆動軸
２ ローター
２ａ ローターアーム
２ｂ、２ｃ 貫通穴
３ 斜板
３ａ 斜板アーム
３ｂ 貫通穴
４ シュー
５ ピストン
６ シリンダブロック
６ａ ボア
７ フロントハウジング
８ シリンダヘッド
９ 弁板
１０ ローターアーム
１０ａ、１０ｂ、１０ｃ 貫通穴
１１、１２ ピン
１３ リンク機構 A Variable capacity swash plate compressor 1 Drive shaft 2 Rotor 2a Rotor arm 2b, 2c Through hole 3 Swash plate 3a Swash plate arm 3b Through hole 4 Shoe 5 Piston 6 Cylinder block 6a Bore 7 Front housing 8 Cylinder head 9 Valve plate 10 Rotor Arm 10a, 10b, 10c Through hole 11, 12 Pin 13 Link mechanism

Claims (4)

駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備える可変容量圧縮機の、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構であって、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを備え、アームと斜板との係合部は、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部は、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有するリンク機構において、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とが、テーパー形状であることを特徴とする可変容量圧縮機のローターと斜板のリンク機構。 A drive shaft, a rotor fixed to the drive shaft, a swash plate supported by the drive shaft so that the tilt angle can be varied, a piston reciprocated by a drive shaft rotating through the swash plate, and a piston slidable A link mechanism for connecting a rotor and a swash plate so as to be relatively non-rotatable around a drive shaft while allowing a change in tilt angle of the swash plate of a variable capacity compressor including a cylinder block having an inserted bore, the drive shaft A rotor that engages with the swash plate so as to be rotatable about a first axis perpendicular to the plane formed by the center axis of the swash plate and the top dead center of the swash plate and is rotatable about a second axis perpendicular to the plane. The arm and the swash plate engaging portion includes a clamped portion formed by one of the arm or the swash plate, a pair of clamped portions formed by the other of the arm or the swash plate, and a clamped portion. The center part is press-fitted and fixed in the through hole formed in the part. Both of the first and second pins are slidably fitted in a pair of through holes formed in the sandwiching portion, and the engagement portion between the arm and the rotor is a sandwiched portion formed by one of the arm or the rotor. And a pair of sandwiching portions formed by the other of the arm or the rotor, and a center portion is press-fitted and fixed in a through hole formed in the sandwiched portion, and both ends slide in a pair of through holes formed in the sandwiching portion In the link mechanism having the second pin that can be fitted, the through-hole of the holding portion of the fitting portion on the side of the force application point of the resultant force of the compression reaction force against the swash plate in the fitting portion between the first pin and the holding portion A rotor and swash plate link mechanism of a variable capacity compressor, wherein the shape and the pin shape fitted into the through hole are tapered. 第２ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とがテーパー形状であることを特徴とする請求項１に記載の可変容量圧縮機のローターと斜板のリンク機構。 In the fitting portion between the second pin and the holding portion, the through hole shape of the holding portion and the pin shape fitting into the through hole of the fitting portion on the side where the resultant force of the compression reaction force against the swash plate is tapered The link mechanism between the rotor and the swash plate of the variable capacity compressor according to claim 1, wherein the link mechanism has a shape. 駆動軸と、駆動軸に固定されたローターと、傾角変動可能に駆動軸に支持された斜板と、斜板の傾角変動を許容しつつローターと斜板とを駆動軸回りに相対回転不能に連結するリンク機構と、斜板を介して回転する駆動軸により往復駆動されるピストンと、ピストンが摺動可能に挿入されたボアを有するシリンダブロックとを備え、リンク機構は、駆動軸の中心軸線と斜板の上死点とにより形成される平面に直交する第１軸線回りに回動可能に斜板に係合すると共に前記平面に直交する第２軸線回りに回動可能にローターに係合するアームを有し、アームと斜板との係合部は、アーム又は斜板の一方が形成する被挟持部と、アーム又は斜板の他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第１ピンとを有し、アームとローターとの係合部は、アーム又はローターの一方が形成する被挟持部と、アーム又はローターの他方が形成する一対の挟持部と、被挟持部に形成された貫通穴に中央部が圧入固定されると共に挟持部に形成された一対の貫通穴に両端部が摺動可能に嵌合する第２ピンとを有する可変容量圧縮機であって、第１ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とが、テーパー形状であることを特徴とする可変容量圧縮機。 The drive shaft, the rotor fixed to the drive shaft, the swash plate supported by the drive shaft so that the tilt angle can be varied, and the rotor and the swash plate cannot be relatively rotated around the drive shaft while allowing the tilt angle of the swash plate to be varied. A link mechanism that connects, a piston that is reciprocated by a drive shaft that rotates via a swash plate, and a cylinder block that has a bore into which the piston is slidably inserted. The link mechanism is a central axis of the drive shaft And the top dead center of the swash plate engage with the swash plate so as to be rotatable about a first axis perpendicular to the plane and engage with the rotor so as to be rotatable about a second axis perpendicular to the plane. The engaging portion between the arm and the swash plate includes a sandwiched portion formed by one of the arm or the swash plate, a pair of sandwiched portions formed by the other of the arm or the swash plate, and a sandwiched portion. The center part is press-fitted and fixed in the formed through-hole and clamped A first pin with which both ends are slidably fitted in a pair of through-holes formed in the arm, and an engagement portion between the arm and the rotor is a sandwiched portion formed by one of the arm or the rotor and the arm Alternatively, the other end of the rotor is slidably fitted into a pair of clamping holes formed in the other part of the rotor, and the center part is press-fitted into a through hole formed in the clamped part and the pair of through holes formed in the clamping part. A variable capacity compressor having a second pin to be joined, wherein the fitting portion between the first pin and the sandwiching portion has a fitting portion on the side where the compression force of the compression reaction force on the swash plate is applied. A variable capacity compressor, wherein the hole shape and the pin shape fitted into the through hole are tapered. 第２ピンと挟持部間の嵌合部中の、斜板に対する圧縮反力の合力の着力点側の嵌合部の、挟持部の貫通穴形状と当該貫通穴に嵌合するピン形状とがテーパー形状であることを特徴とする請求項３に記載の可変容量圧縮機。 In the fitting portion between the second pin and the holding portion, the through hole shape of the holding portion and the pin shape fitting into the through hole of the fitting portion on the side where the resultant force of the compression reaction force against the swash plate is tapered The variable capacity compressor according to claim 3, wherein the compressor has a shape.
JP2008321655A 2008-12-17 2008-12-17 Linkage mechanism between rotor and swash plate of variable capacity compressor Expired - Fee Related JP5413823B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101160626B1 (en) 2010-10-05 2012-06-28 한국델파이주식회사 Wobble assembly
CN103016303A (en) * 2011-09-21 2013-04-03 上海三电贝洱汽车空调有限公司 Variable displacement swash plate compressor and assembly method of hinge mechanism of variable displacement swash plate compressor
WO2017170953A1 (en) * 2016-03-31 2017-10-05 大豊工業株式会社 Swashplate compressor

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JP2003172333A (en) * 2001-12-04 2003-06-20 Sanden Corp Link mechanism and variable displacement compressor using the link mechanism
WO2005100790A1 (en) * 2004-04-12 2005-10-27 Calsonic Kansei Corporation Link mechanism and variable displacement compressor
JP2006207500A (en) * 2005-01-28 2006-08-10 Calsonic Kansei Corp Link mechanism and variable displacement compressor using the same

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JP2003172333A (en) * 2001-12-04 2003-06-20 Sanden Corp Link mechanism and variable displacement compressor using the link mechanism
WO2005100790A1 (en) * 2004-04-12 2005-10-27 Calsonic Kansei Corporation Link mechanism and variable displacement compressor
JP2006207500A (en) * 2005-01-28 2006-08-10 Calsonic Kansei Corp Link mechanism and variable displacement compressor using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101160626B1 (en) 2010-10-05 2012-06-28 한국델파이주식회사 Wobble assembly
CN103016303A (en) * 2011-09-21 2013-04-03 上海三电贝洱汽车空调有限公司 Variable displacement swash plate compressor and assembly method of hinge mechanism of variable displacement swash plate compressor
WO2017170953A1 (en) * 2016-03-31 2017-10-05 大豊工業株式会社 Swashplate compressor

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