JPH0450465Y2 - - Google Patents
Info
- Publication number
- JPH0450465Y2 JPH0450465Y2 JP1987095091U JP9509187U JPH0450465Y2 JP H0450465 Y2 JPH0450465 Y2 JP H0450465Y2 JP 1987095091 U JP1987095091 U JP 1987095091U JP 9509187 U JP9509187 U JP 9509187U JP H0450465 Y2 JPH0450465 Y2 JP H0450465Y2
- Authority
- JP
- Japan
- Prior art keywords
- circumferential edge
- swash plate
- detection target
- drive plate
- rotation
- 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
- 238000001514 detection method Methods 0.000 claims description 24
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は揺動斜板を介して傾斜角可変な回転駆
動板の回転運動をピストンの往復直線運動に変換
する揺動斜板式圧縮機における回転検出装置に関
するものである。[Detailed description of the invention] (Field of industrial application) The present invention is used in a oscillating swash plate compressor that converts the rotational motion of a rotary drive plate with a variable inclination angle into the reciprocating linear motion of a piston via a oscillating swash plate. This invention relates to a rotation detection device.
（従来の技術）
特開昭61−255285号公報に開示されるこの種の
圧縮機において内部の揺動部位の潤滑不良に起因
する回転速度低下を検出する場合、回転駆動板を
支持する回転軸の回転を検出する方式が構成的に
容易であるが、径の小さい回転軸の周上に設定さ
れた複数の検出対象領域と磁気変位検出器等の回
転検出器との対向に基づいて回転速度を検出する
方式では高速回転する回転軸上の各検出対象領域
を識別検出することが困難であり、実用に供する
ことができない。そこで、径の大きい回転駆動板
あるいは揺動斜板の揺動範囲内で回転駆動板ある
いは揺動斜板の周縁近傍に回転検出器を配置し、
回転駆動板あるいは揺動斜板を検出する方式が考
えられる。(Prior Art) When detecting a decrease in rotational speed due to poor lubrication of internal swinging parts in this type of compressor disclosed in Japanese Patent Application Laid-Open No. 61-255285, the rotating shaft supporting the rotating drive plate The method of detecting the rotation of In the detection method, it is difficult to identify and detect each detection target area on a rotating shaft that rotates at high speed, and it cannot be put to practical use. Therefore, a rotation detector is placed near the periphery of the rotary drive plate or the oscillating swash plate within the swing range of the large diameter rotary drive plate or oscillating swash plate.
A possible method is to detect a rotating drive plate or a swinging swash plate.
（考案か解決しようとする問題点）
しかしながら、回転駆動板及び揺動斜板を収容
する室内の圧力と吸入圧との圧力差に基づいて回
転駆動板の揺動範囲、即ち圧縮容量が調整される
ため、いかなる揺動状態にも適合する回転検出器
の設置位置の特定はできず、回転駆動板あるいは
揺動斜板を検出対象とする回転検出器の設置は本
質的に不可能である。(Problem to be invented or solved) However, the swing range of the rotary drive plate, that is, the compression capacity, is adjusted based on the pressure difference between the pressure in the chamber housing the rotary drive plate and the swing plate and the suction pressure. Therefore, it is impossible to specify the installation position of a rotation detector that is suitable for any swinging state, and it is essentially impossible to install a rotation detector that detects a rotational drive plate or a swinging swash plate.
考案の構成
（問題点を解決するための手段）
そこで本考案では、回転駆動板を傾斜角可変に
支持する回転支持体にその回転軸線と直交する円
周縁部を設けると共に、同円周縁部上の等分割位
置に複数の検出対象領域を設け、円周縁部の近傍
に前記検出対象領域と近接したときに所定の信号
を発する回転検出器を設置した。Structure of the Invention (Means for Solving Problems) Therefore, in the present invention, a rotating support that supports a rotary drive plate at a variable inclination angle is provided with a circumferential edge that is orthogonal to the axis of rotation, and a A plurality of detection target areas were provided at equally divided positions, and a rotation detector that emitted a predetermined signal when approaching the detection target area was installed near the circumferential edge.
（作用）
即ち、回転駆動板及び揺動斜板と略同程度の径
を持ち得る回転支持体に設けられた円周縁部上の
複数の検出対象領域は回転軸線と直交する所定の
平面上に特定されるため、この所定の平面上にお
ける各回転検出領域の周回軌跡の近傍に回転検出
器を設定することにより、各回転検出領域と回転
検出器との間に圧縮容量変化に関係なく回転検出
可能な対向関係を設定することができる。しか
も、比較的大きな径を持つ円周縁部上の複数の回
転検出領域は回転支持体の高速回転にも識別検出
可能な隣接距離をもつて分散配置可能であり、高
い検出性能を達成することができる。(Function) That is, the plurality of detection target areas on the circumferential edge provided on the rotary support, which can have approximately the same diameter as the rotary drive plate and the rocking swash plate, are located on a predetermined plane perpendicular to the rotational axis. Therefore, by setting a rotation detector near the orbit of each rotation detection area on this predetermined plane, rotation detection can be performed between each rotation detection area and the rotation detector regardless of changes in compression capacity. Possible peer relationships can be set. Furthermore, the plurality of rotation detection areas on the circumferential edge having a relatively large diameter can be distributed at adjacent distances that allow for identification and detection even when the rotation support rotates at high speed, making it possible to achieve high detection performance. can.
（実施例）
以下、本考案を具体化した一実施例を図面に基
づいて説明する。(Example) Hereinafter, an example embodying the present invention will be described based on the drawings.
シリンダブロツク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が接合固定されてお
り、シリンダブロツク１及びフロントハウジング
２には回転軸４が回転可能に支持されている。フ
ロントハウジング２内にて回転軸４には磁性体か
らなる円板状の回転支持体５が直交止着されてお
り、回転支持体５の円周縁部５ａには複数の凹部
５ｂ（本実施例では４つ）が等分割位置に切欠形
成されている。円周縁部５ａと対応するフロント
ハウジング２内周面には磁気変位検出器１５が設
置されており、凹部５ｂとの対向に基づいて所定
の信号が図示しない制御装置へ出力される。 A front housing 2 and a rear housing 3 are fixedly connected to the front and rear of the cylinder block 1, and a rotating shaft 4 is rotatably supported by the cylinder block 1 and the front housing 2. In the front housing 2, a disc-shaped rotating support 5 made of a magnetic material is orthogonally fixed to the rotating shaft 4, and a plurality of recesses 5b (in this embodiment) are formed in the circumferential edge 5a of the rotating support 5. 4) are cut out at equally divided positions. A magnetic displacement detector 15 is installed on the inner circumferential surface of the front housing 2 corresponding to the circumferential edge portion 5a, and a predetermined signal is output to a control device (not shown) based on opposition to the recessed portion 5b.
回転支持体５の後面側には支持アーム６が突設
されており、支持アーム６先端部には長孔６ａが
透設されている。長孔６ａにはピン７がスライド
可能に嵌めこまれており、ピン７には回転駆動板
８が傾斜角可変に連結支持されている。 A support arm 6 is provided protruding from the rear side of the rotary support 5, and a long hole 6a is provided at the tip of the support arm 6. A pin 7 is slidably fitted into the elongated hole 6a, and a rotary drive plate 8 is connected and supported to the pin 7 so as to have a variable inclination angle.
回転支持体５の後側にて回転軸４にはスリーブ
９がスライド可能に支持されていると共に、押圧
ばね１０により回転支持体５側へ押圧付勢されて
おり、スリーブ９の左右両側に突設された軸ピン
９ａ（一方のみ図示）が回転駆動板８の図示しな
い係合孔に係合している。これにより回転駆動板
８が軸ピン９ａを中心に回転軸４方向へ揺動可能
である。回転駆動板８の後面側には揺動斜板１１
が相対回転可能に支持されており、シリンダブロ
ツク１に貫設されたシリンダボア１２内のピスト
ン１３と揺動斜板１１とがピストンロツド１４に
より連結されている。従つて、回転軸４の回転運
動が回転駆動板８を介して揺動斜板１１の前後往
復揺動に変換され、ピストン１３がシリンダボア
１２内を前後動する。これによりリヤハウジング
３内の吸入室３ａからシリンダボア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、フロントハウジング２内の圧力と吸入圧と
の差に基づいて回転駆動板８の傾斜角度が制御さ
れる。 A sleeve 9 is slidably supported on the rotating shaft 4 on the rear side of the rotating support 5, and is biased toward the rotating support 5 by a pressing spring 10. The provided shaft pin 9a (only one of which is shown) engages with an engagement hole (not shown) of the rotary drive plate 8. This allows the rotary drive plate 8 to swing in the direction of the rotary shaft 4 about the shaft pin 9a. A swinging swash plate 11 is provided on the rear side of the rotary drive plate 8.
A piston 13 in a cylinder bore 12 extending through the cylinder block 1 and a swinging swash plate 11 are connected by a piston rod 14. Therefore, the rotational motion of the rotary shaft 4 is converted into a back and forth reciprocating motion of the swinging swash plate 11 via the rotary drive plate 8, and the piston 13 moves back and forth within the cylinder bore 12. As a result, the refrigerant gas sucked into the cylinder bore 12 from the suction chamber 3a in the rear housing 3 is compressed and discharged to the discharge chamber 3b, and the rotary drive plate 8 The inclination angle of is controlled.
さて、回転軸４の回転に伴つて各凹部５ｂが磁
気変位検出器１５と順次対向して通過してゆき、
回転軸４の回転速度に応じた信号数が磁気変位検
出器１５から出力される。この信号数パターンに
基づいて前記図示しない制御装置が圧縮機の回転
状態を把握し、回転軸４、回転支持体５、回転駆
動板８、揺動斜板１１あるいはピストン１３等の
可動部材に関連する揺動部位の潤滑不良に基づい
て回転速度が低下した場合には回転軸４への回転
駆動力伝達を制御する図示しない電磁クラツチの
連結解除を指令する。これにより潤滑不良の把握
ひいては潤滑不良に起因する圧縮機内の焼付ロツ
クが回避される。 Now, as the rotary shaft 4 rotates, each recess 5b sequentially passes facing the magnetic displacement detector 15,
The number of signals corresponding to the rotational speed of the rotating shaft 4 is output from the magnetic displacement detector 15. Based on this signal number pattern, the control device (not shown) grasps the rotational state of the compressor and is connected to movable members such as the rotating shaft 4, the rotating support 5, the rotating drive plate 8, the swinging swash plate 11, or the piston 13. If the rotational speed decreases due to insufficient lubrication of the swinging portion, a command is given to disengage an electromagnetic clutch (not shown) that controls the transmission of rotational driving force to the rotating shaft 4. This makes it possible to detect poor lubrication and avoid seizure locks in the compressor due to poor lubrication.
このような保護機能を得るための磁気変位検出
器１５の設置位置は回転軸４と直交する所定の平
面上を周回する円周縁部５ａの近傍位置に特定で
きるため、フロントハウジング２内の圧力と吸入
圧との差に基づいて傾斜角度を制御される回転駆
動板８及び揺動斜板１１の傾斜角可変性に関係な
く回転速度の把握が可能となり、しかも比較的大
きな径を持つ円周縁部５ａ上に検出対象領域とし
ての凹部５ｂを磁気変位検出器１５による識別検
出可能に複数設定できるため、高い回転検出性能
を達成することができる。 The installation position of the magnetic displacement detector 15 for obtaining such a protective function can be specified in the vicinity of the circumferential edge portion 5a orbiting on a predetermined plane perpendicular to the rotating shaft 4, so that the pressure inside the front housing 2 and It is possible to grasp the rotational speed regardless of the inclination angle variability of the rotary drive plate 8 and the rocking swash plate 11 whose inclination angles are controlled based on the difference with the suction pressure, and the circumferential edge portion has a relatively large diameter. Since a plurality of recesses 5b as detection target areas can be set on 5a so as to be distinguishable and detectable by the magnetic displacement detector 15, high rotation detection performance can be achieved.
本考案は勿論前記実施例にのみ限定されるもの
ではなく、例えば回転検出器として磁気変位検出
器の代わりに反射式投受光器を用いたり、検出対
象領域として凹部の代わりに回転軸４方向に貫通
する透孔を用い、透過式投受光器によりこの透孔
の有無を検出するようにしたり、あるいは検出対
象領域の個数を適宜増減することも可能である。 The present invention is, of course, not limited to the above-mentioned embodiments. For example, a reflection type projector/receiver may be used as a rotation detector instead of a magnetic displacement detector, or a detection target area may be set in the four directions of the rotation axis instead of a recess. It is also possible to use a penetrating through hole and detect the presence or absence of this through hole using a transmission type light projector/receiver, or to increase or decrease the number of detection target areas as appropriate.
考案の効果
以上詳述したように本考案は、回転駆動板を傾
斜角可変に支持する回転支持体の円周縁部の等分
割位置に複数の検出対象領域を設け、円周縁部の
近傍に前記検出対象領域と近接したときに所定の
信号を発する回転検出器を設置したので、いかな
る圧縮容量域においても回転速度の把握を確実に
行なうことができると共に、検出性能を高めるこ
とができ、圧縮機内の潤滑不良の把握ひいては焼
付ロツクを回避し得るという優れた効果を奏す
る。Effects of the Invention As described in detail above, the present invention provides a plurality of detection target areas at equally divided positions on the circumferential edge of the rotary support body that supports the rotary drive plate at a variable inclination angle, and near the circumferential edge. Since we installed a rotation detector that emits a predetermined signal when it comes close to the detection target area, we can reliably grasp the rotation speed in any compression capacity range, and improve detection performance. This has the excellent effect of being able to detect poor lubrication and avoid seizure locks.
第１図は本考案を具体化した一実施例を示す縦
断面図、第２図は第１図のＡ−Ａ線断面図であ
る。
回転軸……４、回転支持体……５、円周縁部…
…５ａ、検出対象領域としての凹部……５ｂ、回
転駆動板……８、揺動斜板……１１、ピストン…
…１３、回転検出器としての磁気変位検出器……
１５。
FIG. 1 is a longitudinal sectional view showing an embodiment embodying the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. Rotating shaft...4, Rotating support body...5, Circumferential edge...
...5a, Recessed portion as detection target area...5b, Rotating drive plate...8, Oscillating swash plate...11, Piston...
...13. Magnetic displacement detector as a rotation detector...
15.
Claims (1)
た回転駆動板の回転運動を揺動斜板を介してピス
トンの往復直線運動に変換する揺動斜板式圧縮機
において、前記回転軸に対して直交する円周縁部
を前記回転支持体に設けると共に、同円周縁部上
の等分割位置に複数の検出対象領域を設け、円周
縁部の近傍に前記検出対象領域と近接したときに
所定の信号を発する回転検出器を設置した揺動斜
板式圧縮機における回転検出装置 In a oscillating swash plate compressor that converts the rotational motion of a rotary drive plate supported at a variable inclination angle by a rotating support on a rotating shaft into reciprocating linear motion of a piston via a oscillating swash plate, A circumferential edge that is orthogonal to each other is provided on the rotary support, and a plurality of detection target areas are provided at equally divided positions on the circumferential edge, and a predetermined detection target area is provided near the circumferential edge when approaching the detection target area. Rotation detection device for a rocking swash plate compressor equipped with a rotation detector that emits a signal
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987095091U JPH0450465Y2 (en) | 1987-06-19 | 1987-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987095091U JPH0450465Y2 (en) | 1987-06-19 | 1987-06-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63202778U JPS63202778U (en) | 1988-12-27 |
| JPH0450465Y2 true JPH0450465Y2 (en) | 1992-11-27 |
Family
ID=30959225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987095091U Expired JPH0450465Y2 (en) | 1987-06-19 | 1987-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450465Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2532471Y2 (en) * | 1990-07-05 | 1997-04-16 | 株式会社豊田自動織機製作所 | Rotation detection mechanism in oscillating swash plate compressor |
| JP2812095B2 (en) * | 1992-09-24 | 1998-10-15 | 株式会社豊田自動織機製作所 | Rotation detection mechanism in oscillating swash plate compressor |
| JP2006313047A (en) * | 2005-05-09 | 2006-11-16 | Hoshizaki Electric Co Ltd | Rotation abnormality detection device and its abnormality detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140157A (en) * | 1979-04-18 | 1980-11-01 | Diesel Kiki Co Ltd | Detector for number of revolution |
| JPS58210391A (en) * | 1982-06-01 | 1983-12-07 | Diesel Kiki Co Ltd | Compressor fault detector in car cooler |
| JPS60162087A (en) * | 1984-02-02 | 1985-08-23 | Sanden Corp | Capacity-control type compressor |
| JPS60178985A (en) * | 1984-02-24 | 1985-09-12 | Sanden Corp | Compressor having rotation detecting function |
| JPS61255285A (en) * | 1985-05-02 | 1986-11-12 | Toyoda Autom Loom Works Ltd | Compression capacity varying mechanism in swingable slash plate type compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6014209Y2 (en) * | 1979-05-30 | 1985-05-07 | カルソニックカンセイ株式会社 | rotation detection device |
-
1987
- 1987-06-19 JP JP1987095091U patent/JPH0450465Y2/ja not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140157A (en) * | 1979-04-18 | 1980-11-01 | Diesel Kiki Co Ltd | Detector for number of revolution |
| JPS58210391A (en) * | 1982-06-01 | 1983-12-07 | Diesel Kiki Co Ltd | Compressor fault detector in car cooler |
| JPS60162087A (en) * | 1984-02-02 | 1985-08-23 | Sanden Corp | Capacity-control type compressor |
| JPS60178985A (en) * | 1984-02-24 | 1985-09-12 | Sanden Corp | Compressor having rotation detecting function |
| JPS61255285A (en) * | 1985-05-02 | 1986-11-12 | Toyoda Autom Loom Works Ltd | Compression capacity varying mechanism in swingable slash plate type compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63202778U (en) | 1988-12-27 |
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