JPH06270709A - Hydraulic type driving device of auxiliary device for vehicle - Google Patents
Hydraulic type driving device of auxiliary device for vehicleInfo
- Publication number
- JPH06270709A JPH06270709A JP5056784A JP5678493A JPH06270709A JP H06270709 A JPH06270709 A JP H06270709A JP 5056784 A JP5056784 A JP 5056784A JP 5678493 A JP5678493 A JP 5678493A JP H06270709 A JPH06270709 A JP H06270709A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic
- hydraulic motor
- vacuum pump
- vehicle
- 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
Landscapes
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両に装着されている
車両ブレーキ倍力装置へ負圧を供給するバキュームポン
プの駆動を油圧モータにより行う車両用補機の油圧式駆
動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic drive system for a vehicle auxiliary machine in which a vacuum pump for supplying a negative pressure to a vehicle brake booster mounted on a vehicle is driven by a hydraulic motor.
【０００２】[0002]
【従来の技術】従来油圧モータによる車両用補機の駆動
装置は、特開昭62−12427 号公報にあるような装置があ
るが、車両用補機の中に車両ブレーキ倍力装置へ負圧を
供給するバキュームポンプはなかった。2. Description of the Related Art Conventionally, there is a device for driving a vehicle auxiliary machine using a hydraulic motor as disclosed in Japanese Patent Laid-Open No. 62-12427, but a negative pressure is applied to a vehicle brake booster in the vehicle auxiliary machine. There was no vacuum pump to supply.
【０００３】従来バキュームポンプは、エンジン回転軸
からベルトを介して増速駆動されているため、広い回転
域で使用され、高回転域では耐久性や温度上昇の対応上
高精度部品，高品質材料が必要となり、また冷却のため
に給油が必要であった。Conventional vacuum pumps are used in a wide rotation range because they are driven at a high speed from an engine rotation shaft through a belt, and in the high rotation range, high precision parts and high quality materials are used for durability and temperature rise. Was required, and refueling was required for cooling.
【０００４】[0004]
【発明が解決しようとする課題】従来のバキュームポン
プは、エンジン回転軸からベルトを介して増速駆動され
ており、広い回転域で使用されるため、エンジン回転に
より真空度の立上り特性が異なり、車毎に最適なバキュ
ームポンプの容量を選ぶ必要があった。また、回転数が
高いところでも使用されるため、各部品の耐久性，摺動
部の発熱による温度上昇の問題があり、対策として部品
の高精度化，高耐熱材の使用が必要であり、更に冷却の
ために給油が必要であった。A conventional vacuum pump is driven in an increased speed from an engine rotating shaft via a belt and is used in a wide rotation range. Therefore, the rising characteristic of the vacuum degree varies depending on the engine rotation. It was necessary to select the optimum vacuum pump capacity for each vehicle. In addition, since it is used even at high rotational speeds, there are problems of durability of each part and temperature rise due to heat generation of sliding parts. As a countermeasure, it is necessary to improve the accuracy of parts and use high heat resistant materials. Further, refueling was necessary for cooling.
【０００５】本発明の目的は、バキュームポンプを油圧
モータを用いてエンジン始動時から中速程度の定速度で
駆動させることにより、エンジン回転数に関係なく真空
度の立上り特性を一定にし、摺動部の発熱による温度上
昇を低いレベルでおさえることができ、ひいては、冷却
のための給油をなくして、無給油運転をも可能にするこ
とにある。また、熱や摩耗の影響をおさえることができ
るため、部品精度をゆるくし、材料の耐熱性，耐摩耗性
が比較的小さい安価材を使用でき、コストの低減を可能
にすることにある。An object of the present invention is to drive a vacuum pump by using a hydraulic motor at a constant speed of medium speed from the engine start, so that the rising characteristic of the degree of vacuum can be made constant regardless of the engine speed and sliding. It is possible to suppress the temperature rise due to the heat generation of the section at a low level, and thus to eliminate the need for refueling for cooling and to enable a non-lubricating operation. Further, since it is possible to suppress the influence of heat and wear, it is possible to loosen the precision of the parts and to use an inexpensive material whose heat resistance and wear resistance are relatively small, which enables cost reduction.
【０００６】[0006]
【課題を解決するための手段】本発明は、エンジンより
駆動される油圧ポンプを有し、前記油圧ポンプから供給
される作動油により駆動される油圧モータの回転軸に車
両用補機を連結し、該車両用補機の反駆動側に該車両用
補機の回転軸を突出させ該回転軸突出部にバキュームポ
ンプを直接連結し、もしくは、上記油圧モータの回転軸
にバキュームポンプを直接連結し、回転駆動させること
を技術手段として採用した。SUMMARY OF THE INVENTION The present invention has a hydraulic pump driven by an engine, and a vehicle accessory is connected to a rotary shaft of a hydraulic motor driven by hydraulic oil supplied from the hydraulic pump. , The rotation shaft of the vehicle accessory is projected to the non-driving side of the vehicle accessory, and the vacuum pump is directly connected to the rotation shaft protruding portion, or the vacuum pump is directly connected to the rotation shaft of the hydraulic motor. , The rotational drive was adopted as a technical means.
【０００７】[0007]
【作用】バキュームポンプの駆動を油圧モータの回転出
力を利用して行う。油圧モータの回転速度は、油圧ポン
プから供給される作動油の油量，油圧を調節すること
で、任意の一定速度で維持できる。Operation: The vacuum pump is driven by utilizing the rotational output of the hydraulic motor. The rotational speed of the hydraulic motor can be maintained at an arbitrary constant speed by adjusting the amount of hydraulic oil supplied from the hydraulic pump and the hydraulic pressure.
【０００８】従って、従来のエンジンによるベルトを介
した駆動のようにエンジン回転の変動に伴うバキューム
ポンプの真空度の立上り特性の変動がなく、一定の真空
度の立上り特性を供給することができる。Therefore, it is possible to supply the constant rising characteristic of the vacuum degree without the fluctuation of the rising characteristic of the vacuum degree of the vacuum pump due to the change of the engine rotation as in the conventional driving through the belt by the engine.
【０００９】[0009]
【実施例】以下、本発明の実施例を図１〜図４により説
明する。図１は、車両用補機１０にバキュームポンプ１
２を直接連結し駆動するシステム構成図である。Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows a vacuum pump 1 for a vehicle accessory 10.
FIG. 2 is a system configuration diagram in which 2 are directly connected and driven.
【００１０】油圧ポンプ３は、エンジン１からの駆動力
を駆動軸２を介して伝えられ回転する。The hydraulic pump 3 is rotated by being transmitted with the driving force from the engine 1 via the drive shaft 2.
【００１１】油圧ポンプ３と、油圧モータ４は、作動油
を供給する給油管５で連結され、また途中に油量制御装
置６が配設されている。油量制御装置６は、油圧モータ
４に定量の作動油を供給する給油管５と、余分な作動油
をオイルタンク８に戻すバイパス７を有している。定量
の作動油の供給により一定速で駆動される油圧モータ４
の駆動軸９には車両用補機１０が連結されている。車両
用補機１０の反駆動側からは車両用補機１０の回転軸１
１が突出しており、この回転軸１１にはバキュームポン
プ１２が連結されている。応用例としては、図２のよう
に油圧モータ４の駆動軸９にバキュームポンプ１２が直
接連結されている。油圧モータ４からは駆動に使用され
た油をオイルタンク８に戻す排油管１３が連結され、オ
イルタンク８からは、油圧ポンプに油を送る送油管１４
が連結される。The hydraulic pump 3 and the hydraulic motor 4 are connected by an oil supply pipe 5 for supplying hydraulic oil, and an oil amount control device 6 is arranged on the way. The oil amount control device 6 has an oil supply pipe 5 that supplies a fixed amount of hydraulic oil to the hydraulic motor 4, and a bypass 7 that returns excess hydraulic oil to the oil tank 8. Hydraulic motor 4 driven at a constant speed by supplying a fixed amount of hydraulic oil
A vehicle accessory 10 is connected to the drive shaft 9 of the vehicle. From the non-driving side of the vehicle accessory 10, the rotary shaft 1 of the vehicle accessory 10
A vacuum pump 12 is connected to the rotary shaft 11. As an application example, the vacuum pump 12 is directly connected to the drive shaft 9 of the hydraulic motor 4 as shown in FIG. An oil drain pipe 13 for returning the oil used for driving to the oil tank 8 is connected from the hydraulic motor 4, and an oil feed pipe 14 for sending oil from the oil tank 8 to a hydraulic pump.
Are connected.
【００１２】上記構成による油圧式駆動装置の動作を以
下に説明する。エンジンの回転により駆動軸２に駆動力
が伝えられると、油圧ポンプ３は駆動され、作動油は図
１，図２中の矢印のように、油圧ポンプ３によりオイル
タンク８から油量制御装置６へ送られる。この油量制御
装置６により、定量の作動油は油圧モータ４に供給さ
れ、余分な作動油はオイルタンク８に戻される。油圧モ
ータ４に供給された定量の作動油は、油圧モータ４の駆
動軸９に連結された車両用補機１０，バキュームポンプ
１２を一定速で駆動させてオイルタンク８に戻る。The operation of the hydraulic drive device having the above structure will be described below. When the driving force is transmitted to the drive shaft 2 by the rotation of the engine, the hydraulic pump 3 is driven, and the hydraulic oil flows from the oil tank 8 to the oil amount control device 6 by the hydraulic pump 3 as shown by the arrows in FIGS. Sent to. By the oil amount control device 6, a fixed amount of hydraulic oil is supplied to the hydraulic motor 4, and excess hydraulic oil is returned to the oil tank 8. The fixed amount of hydraulic oil supplied to the hydraulic motor 4 drives the vehicle auxiliary machine 10 and the vacuum pump 12 connected to the drive shaft 9 of the hydraulic motor 4 at a constant speed and returns to the oil tank 8.
【００１３】図３は、エンジン１の回転数と油圧モータ
４の回転数の関係を示したものであり、エンジン１の回
転数が変動しても、油圧モータ４の回転数は、油圧ポン
プ３からの作動油量の変動を油量制御装置６にて定量の
作動油量に調節制御することにより、一定速にすること
ができる。FIG. 3 shows the relationship between the rotation speed of the engine 1 and the rotation speed of the hydraulic motor 4. Even if the rotation speed of the engine 1 varies, the rotation speed of the hydraulic motor 4 remains unchanged. A constant speed can be achieved by adjusting and controlling the fluctuation of the hydraulic oil amount from the above to a fixed amount of hydraulic oil by the oil amount control device 6.
【００１４】また、図４のバキュームポンプ回転数とバ
キュームポンプ温度の関係に示すように、バキュームポ
ンプを一定速で駆動すると、バキュームポンプ温度Ｔ2
までしか温度上昇しないため、エンジンによる駆動の時
のように冷却のために給油する必要がなく、バキューム
ポンプ冷却のための給排油の配管が不要となり、構造の
簡素化が図れる。また、部品の摩耗，熱膨張の影響は小
さくなるため部品の精度，材料の耐摩耗性，耐熱性をお
とすことができ、コスト低減を図ることができる。Further, as shown in the relationship between the vacuum pump speed and the vacuum pump temperature in FIG. 4, when the vacuum pump is driven at a constant speed, the vacuum pump temperature T 2
Since the temperature rises only up to the temperature, it is not necessary to supply oil for cooling unlike when driving the engine, and piping for oil supply and discharge for cooling the vacuum pump is not required, and the structure can be simplified. Further, since the effects of wear and thermal expansion of parts are reduced, the accuracy of parts, the wear resistance and heat resistance of materials can be reduced, and the cost can be reduced.
【００１５】[0015]
【発明の効果】本発明によれば、油圧モータによってバ
キュームポンプの駆動を一定速で行うことができるの
で、高速回転時のように部品の摩耗，熱膨張の影響は大
きくないため、耐摩耗性，耐熱性に優れた高級材料を使
用したり、部品精度を厳しくする必要がなく、部品を安
価にできる。また、温度上昇が小さいため、冷却のため
の給油をしない無給油運転ができ、構造的にも給排油管
の配管をなくして簡素化が図れ、ひいては、コスト低減
が図れる。According to the present invention, since the vacuum pump can be driven at a constant speed by the hydraulic motor, the effects of wear and thermal expansion of parts are not so great as in the case of high speed rotation. ， The parts can be made inexpensive because it is not necessary to use high-quality materials with excellent heat resistance or to make the parts precision strict. Further, since the temperature rise is small, oil-free operation without oil supply for cooling can be performed, and structurally simplification can be achieved by eliminating the piping of the oil supply / exhaust pipe, and eventually the cost can be reduced.
【００１６】また、バキュームポンプの駆動は、エンジ
ンによって直接駆動されていないため、バキュームポン
プ駆動用の車両用補機やバキュームポンプの装着位置を
自由に設定できる。Further, since the drive of the vacuum pump is not directly driven by the engine, it is possible to freely set the mounting position of the vehicle auxiliary equipment for driving the vacuum pump and the vacuum pump.
【図１】車両用補機にバキュームポンプを連結し油圧モ
ータにより共に駆動させる本発明の実施例のシステム構
成図である。FIG. 1 is a system configuration diagram of an embodiment of the present invention in which a vacuum pump is connected to a vehicle accessory and both are driven by a hydraulic motor.
【図２】油圧モータにバキュームポンプを連結し駆動さ
せる本発明の実施例のシステム構成図である。FIG. 2 is a system configuration diagram of an embodiment of the present invention in which a vacuum pump is connected to and driven by a hydraulic motor.
【図３】本発明の実施例のエンジン回転数と油圧モータ
回転数の関係図である。FIG. 3 is a relationship diagram of an engine speed and a hydraulic motor speed according to an embodiment of the present invention.
【図４】バキュームポンプの温度特性図である。FIG. 4 is a temperature characteristic diagram of a vacuum pump.
１…エンジン、２…駆動軸、３…油圧ポンプ、４…油圧
モータ、５…給油管、６…油量制御装置、７…バイパ
ス、８…オイルタンク、９…油圧モータの駆動軸、１０
…車両用補機、１１…車両用補機の回転軸、１２…バキ
ュームポンプ、１３…排油管、１４…送油管。DESCRIPTION OF SYMBOLS 1 ... Engine, 2 ... Drive shaft, 3 ... Hydraulic pump, 4 ... Hydraulic motor, 5 ... Oil supply pipe, 6 ... Oil amount control device, 7 ... Bypass, 8 ... Oil tank, 9 ... Hydraulic motor drive shaft, 10
... Vehicle accessories, 11 ... Rotary shaft of vehicle accessories, 12 ... Vacuum pump, 13 ... Exhaust pipe, 14 ... Oil feed pipe.
Claims (3)
し、前記油圧ポンプから作動油を提供されることによっ
て駆動される油圧モータに連結駆動される車両用補機の
反駆動側に該車両用補機の回転軸を突出させ該回転軸突
出部にバキュームポンプを直接連結したことを特徴とす
る車両用補機の油圧式駆動装置。1. A vehicle auxiliary machine having a hydraulic pump driven by an engine and connected to a hydraulic motor driven by being supplied with hydraulic oil from the hydraulic pump, on the non-driving side of the vehicle auxiliary machine. A hydraulic drive system for a vehicle accessory, wherein a rotary shaft of the accessory is projected and a vacuum pump is directly connected to the rotary shaft projection.
し、前記油圧ポンプから作動油を提供されることによっ
て駆動される油圧モータの回転軸にバキュームポンプを
直接連結したことを特徴とする車両用補機の油圧式駆動
装置。2. A vehicle having a hydraulic pump driven by an engine, wherein a vacuum pump is directly connected to a rotary shaft of a hydraulic motor driven by supplying hydraulic oil from the hydraulic pump. Hydraulic drive of auxiliary equipment.
プは無給油式バキュームポンプであることを特徴とする
車両用補機の油圧式駆動装置。3. The hydraulic drive system for a vehicle accessory according to claim 1 or 2, wherein the vacuum pump is an oil-free vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5056784A JPH06270709A (en) | 1993-03-17 | 1993-03-17 | Hydraulic type driving device of auxiliary device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5056784A JPH06270709A (en) | 1993-03-17 | 1993-03-17 | Hydraulic type driving device of auxiliary device for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06270709A true JPH06270709A (en) | 1994-09-27 |
Family
ID=13037055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5056784A Pending JPH06270709A (en) | 1993-03-17 | 1993-03-17 | Hydraulic type driving device of auxiliary device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06270709A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012515127A (en) * | 2009-01-19 | 2012-07-05 | バキュリフト，インコーポレイテッド（ディービーエー バキュワークス インターナショナル） | Improved small vacuum material handling equipment |
| JP2015048881A (en) * | 2013-08-30 | 2015-03-16 | いすゞ自動車株式会社 | Power transmission mechanism of auxiliary machine, and power transmission method of auxiliary machine |
-
1993
- 1993-03-17 JP JP5056784A patent/JPH06270709A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012515127A (en) * | 2009-01-19 | 2012-07-05 | バキュリフト，インコーポレイテッド（ディービーエー バキュワークス インターナショナル） | Improved small vacuum material handling equipment |
| US10612532B1 (en) | 2009-01-19 | 2020-04-07 | Vaculift, Inc. | Compact vacuum material handler |
| JP2015048881A (en) * | 2013-08-30 | 2015-03-16 | いすゞ自動車株式会社 | Power transmission mechanism of auxiliary machine, and power transmission method of auxiliary machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |