JPH07301307A - Belt type continuously variable transmission of working vehicle - Google Patents
Belt type continuously variable transmission of working vehicleInfo
- Publication number
- JPH07301307A JPH07301307A JP9514194A JP9514194A JPH07301307A JP H07301307 A JPH07301307 A JP H07301307A JP 9514194 A JP9514194 A JP 9514194A JP 9514194 A JP9514194 A JP 9514194A JP H07301307 A JPH07301307 A JP H07301307A
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- space
- continuously variable
- variable transmission
- type continuously
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0487—Friction gearings
- F16H57/0489—Friction gearings with endless flexible members, e.g. belt CVTs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、２枚のプーリ板を互い
に接離自在に回転軸に外嵌した割プーリの一対間に亙っ
て、伝動ベルトを架設に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission belt installed between a pair of split pulleys in which two pulley plates are fitted around a rotary shaft so that they can come into contact with and separate from each other.
【０００２】[0002]
【従来の技術】この種のベルト式無段変速装置は、例え
ばコンバイン等の作業車に用いられるものであって藁屑
や麈埃の多い環境での作業が主となることを考虞して、
変速装置への異物の進入を阻止すべく防護ケース内に収
容されるのが一般的である。しかるに、ベルト式無段変
速装置においては、伝動ベルトと割プーリとの間の摩擦
に起因する発熱が避けられず、冷却のための手段を講じ
る必要がある。従来、上述した作業車のベルト式無段変
速装置の冷却手段としては、防護ケースに穿孔し、自然
通風ないし強制通風によって、ケース内の空気と外気と
を入れ替えて冷却する構成をとるものが知られている。2. Description of the Related Art This type of belt type continuously variable transmission is used for a working vehicle such as a combine, and is considered to be mainly used in an environment where a lot of straw and dust are present. ,
It is generally housed in a protective case to prevent foreign matter from entering the transmission. However, in the belt type continuously variable transmission, heat generation due to friction between the transmission belt and the split pulley is unavoidable, and it is necessary to take measures for cooling. Conventionally, as a cooling means of the above-mentioned belt type continuously variable transmission for a work vehicle, there is known a structure in which a protective case is perforated and the air in the case is replaced with the outside air by natural ventilation or forced ventilation to cool the case. Has been.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上述した従来
の冷却のための構成においては、実際に摩擦が生じて発
熱するのが２枚のプーリ板の内側の伝動ベルトに当接す
る部分であるにも拘らず、保護ケースの孔を介して換気
が期待されるケース内の空気は、それら２枚のプーリ板
を伝熱した後にそれらの外側において放射された熱を含
むものであり、冷却効果が充分に高いとは言い難いもの
であった。本発明の目的は、上記実情に鑑み、効率の良
い冷却を行なえる構成を備えた作業車のベルト式無段変
速装置を提供することにある。However, in the above-described conventional cooling structure, it is only the portion of the two pulley plates, which is in contact with the transmission belt, that actually causes friction and generates heat. Nevertheless, the air inside the case, which is expected to be ventilated through the holes of the protective case, contains the heat radiated on the outside of the two pulley plates after they have conducted heat transfer, so that the cooling effect is It was hard to say that it was high enough. In view of the above situation, an object of the present invention is to provide a belt type continuously variable transmission for a work vehicle having a configuration capable of performing efficient cooling.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成すべくな
した本発明の作業車のベルト式無段変速装置の構成は次
の通りである。すなわち、請求項１に係る特徴構成は、
２枚のプーリ板を互いに接離自在に外嵌した回転軸を中
空状に形成してその軸内空間を外気に連通させるととも
に、前記２枚のプーリ板間の空間と前記軸内空間とを連
通させる連通孔を、前記回転軸に形成したことにある。The structure of a belt type continuously variable transmission for a work vehicle according to the present invention which achieves the above object is as follows. That is, the characteristic configuration according to claim 1 is
A rotary shaft, in which two pulley plates are fitted to each other so as to be able to come into contact with and separate from each other, is formed in a hollow shape so that the space inside the shaft communicates with the outside air, and the space between the two pulley plates and the space inside the shaft are formed. A communication hole for communication is formed in the rotary shaft.
【０００５】また、本発明の請求項２に係る特徴構成
は、上述した請求項１に係る特徴構成において、回転軸
に形成した連通孔を、前記回転軸の径方向に対して傾斜
姿勢に形成したことにある。According to a second aspect of the present invention, in the first aspect, the communication hole formed in the rotary shaft is formed in an inclined posture with respect to the radial direction of the rotary shaft. There is something I did.
【０００６】[0006]
【作用】つまり、本発明の請求項１に係る特徴構成によ
れば、外気に連通する回転軸の軸内空間を、その回転軸
に形成した連通孔を介して、割プーリを構成する２枚の
プーリ板間の空間に連通させてあるから、それら両プー
リ板の内側の伝動ベルトとの当接部分で摩擦によって発
生した熱を、直接外気に逃がすことができる。That is, according to the characterizing feature of the first aspect of the present invention, the two parts constituting the split pulley are formed in the inner space of the rotary shaft communicating with the outside air through the communication hole formed in the rotary shaft. Since they are communicated with the space between the pulley plates, the heat generated by friction at the contact portions between the pulley plates on the inside of the pulley plates can be directly released to the outside air.
【０００７】また、本発明の請求項２に係る特徴構成に
よれば、伝動ベルトと割プーリ間での摩擦熱を外気に逃
がすための回転軸の連通孔を、その回転軸の径方向に対
して傾斜姿勢に形成してあるから、伝動時のその回転軸
の回転に伴なう遠心力の作用で、２枚のプーリ板の間の
空間と回転軸の軸内空間との間の空気の流れが促進され
ることとなり、より効果的な熱の発散を達成できる。Further, according to the second aspect of the present invention, the communication hole of the rotary shaft for releasing the frictional heat between the transmission belt and the split pulley to the outside is provided in the radial direction of the rotary shaft. Since it is formed in an inclined posture by the action of centrifugal force accompanying the rotation of the rotating shaft during transmission, the air flow between the space between the two pulley plates and the inner space of the rotating shaft is It will be promoted and more effective heat dissipation can be achieved.
【０００８】[0008]
【発明の効果】その結果、本発明の請求項１に係る特徴
構成によれば、熱の発生部分に近い部分の空気を直接外
気と入れ替えることで効率的な熱発散を可能にでき、冷
却効果の高い作業車のベルト式無段変速装置を提供でき
るようになった。As a result, according to the characterizing feature of the first aspect of the present invention, the air in the portion close to the heat generating portion is directly replaced with the outside air, so that efficient heat dissipation can be achieved and the cooling effect can be obtained. It is now possible to provide a belt-type continuously variable transmission for high-performance work vehicles.
【０００９】また、本発明の請求項２に係る特徴構成に
よれば、伝動時に必ず生じる回転に伴な遠心力を換気の
ために有効利用することで、簡単な構成でありながら、
さらに効率的な熱発散が可能になり、より一層冷却効果
の高い作業車のベルト式無段変速装置を提供できるよう
になった。Further, according to the characterizing feature of claim 2 of the present invention, the centrifugal force associated with the rotation, which is always generated at the time of transmission, is effectively used for ventilation, so that the structure is simple,
Further, it becomes possible to provide more efficient heat dissipation and to provide a belt-type continuously variable transmission for a work vehicle having a higher cooling effect.
【００１０】[0010]
【実施例】以下、図面に基づいて、本発明の実施例を説
明する。図３は、作業車の一例であるコンバインにおけ
る、走行用の伝動装置の概略を示している。エンジン
（図示せず）からの動力は、テンションクラッチを備え
たベルト伝動機構（図示せず）を介してベルト式無段変
速装置１の入力プーリ２に伝達される。このベルト式無
段変速装置１からの動力は、ミッションケース３内にお
いて、前後進切換機構（図示せず）、高低速二段に切り
換える副変速機構（図示せず）、及び、左右各別のサイ
ドブレーキ）（図示せず）を介して、左右のクローラ式
の走行装置４Ａ，４Ｂに伝達され、機体を推進させるよ
うに構成してある。Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 schematically shows a transmission device for traveling in a combine, which is an example of a work vehicle. Power from an engine (not shown) is transmitted to the input pulley 2 of the belt type continuously variable transmission 1 via a belt transmission mechanism (not shown) equipped with a tension clutch. The power from the belt type continuously variable transmission 1 is provided in the transmission case 3 in a forward / reverse switching mechanism (not shown), a sub-transmission mechanism (not shown) for switching between high and low speed two stages, and left and right. It is configured to be transmitted to the left and right crawler type traveling devices 4A and 4B via a side brake) (not shown) to propel the machine body.
【００１１】前記ベルト式無段変速装置１についてさら
に説明する。図１に示すように、入力プーリ２が固定さ
れた入力側の回転軸５Ａに第１割プーリ６Ａを、また、
出力側の回転軸５Ｂに第２割プーリ６Ｂを備え、両割プ
ーリ６Ａ，６Ｂに亙って伝動ベルト７を巻回してある。
第１割プーリ６Ａは、入力側の回転軸５Ａにスプライン
嵌合して固定した固定側のプーリ板８Ａａと、それに対
して軸芯方向に移動可能な移動側のプーリ板８Ａｂとか
ら構成してある。そして、その移動側のプーリ板８Ａｂ
に外嵌したリング部材の９の当接するカム面を有するカ
ム部材１０を入力側の回転軸５Ａに外嵌してある。一
方、第２割プーリ６Ｂは、出力側の回転軸５Ｂにスプラ
イン嵌合して固定した固定側のプーリ板８Ｂａと、それ
に対して軸芯方向に移動可能な移動側のプーリ板８Ｂｂ
とから構成してある。そして、その移動側のプーリ板８
ａを固定側のプーリ板８Ｂａ側に付勢するバネ１１と、
出力側の回転軸５Ｂ側の負荷が大きくなるのに比例して
移動側のプーリ板８Ｂｂを固定側のプーリ板８Ｂａの側
に押すカム機構１２とを設けてある。図１は、第１割プ
ーリ６Ａにおいて両プーリ板８Ａａ，８Ａｂが最も離
れ、第２割プーリ６Ｂにおいて両プーリ８Ｂａ，８Ｂｂ
が最も接近した最低速状態を示している。この状態あ
ら、前記カム部材１０を回転操作して第１割プーリ６Ａ
の移動側のプーリ板８Ａｂを固定側のプーリ板８Ａａ側
に押し操作して接近させることで、第１割プーリ６Ａで
の伝動ベルト７の巻回半径が大きくなり、それに伴な
い、第２割プーリ６Ｂにおいて、移動側のプーリ板８Ｂ
ｂが固定側のプーリ板８Ｂａから離れて行き、これによ
り、ベルト式無段変速装置１は、高速側に変速操作され
る。また、前記カム部材１０をもとに戻すと、第２割プ
ーリ６Ｂにおいて両プーリ板８Ｂａ，８Ｂｂが接近して
第２割プーリ６Ｂでの伝動ベルト７の巻回半径が大きく
なり、それに伴ない、第１割プーリ６Ａにおいては、両
プーリ板８Ａａ，８Ａｂが離れ、これにより、低速側に
変速操作される。The belt type continuously variable transmission 1 will be further described. As shown in FIG. 1, a first split pulley 6A is attached to a rotary shaft 5A on the input side to which the input pulley 2 is fixed, and
A second split pulley 6B is provided on the rotary shaft 5B on the output side, and a transmission belt 7 is wound around the split pulleys 6A and 6B.
The first split pulley 6A is composed of a fixed pulley plate 8Aa fixed by spline fitting to the input rotary shaft 5A, and a movable pulley plate 8Ab movable in the axial direction relative to the fixed pulley plate 8Aa. is there. Then, the pulley plate 8Ab on the moving side
A cam member 10 having a cam surface with which 9 of the ring member externally fitted is affixed to the rotary shaft 5A on the input side. On the other hand, the second split pulley 6B includes a fixed pulley plate 8Ba fixed by spline fitting to the output rotary shaft 5B and a movable pulley plate 8Bb movable in the axial direction with respect to the fixed pulley plate 8Ba.
It consists of and. Then, the pulley plate 8 on the moving side
a spring 11 for urging a toward the fixed pulley plate 8Ba side;
A cam mechanism 12 is provided for pushing the moving pulley plate 8Bb to the fixed pulley plate 8Ba side in proportion to the increase in load on the output rotary shaft 5B side. In FIG. 1, the two pulley plates 8Aa and 8Ab are the farthest apart in the first split pulley 6A, and the two pulleys 8Ba and 8Bb are in the second split pulley 6B.
Indicates the lowest speed state that is closest to. In this state, the cam member 10 is rotated to operate the first split pulley 6A.
By pushing and moving the moving pulley plate 8Ab toward the fixed pulley plate 8Aa side, the winding radius of the transmission belt 7 at the first split pulley 6A increases, and the second split In the pulley 6B, the moving pulley plate 8B
b goes away from the fixed pulley plate 8Ba, whereby the belt type continuously variable transmission 1 is operated to shift to the high speed side. When the cam member 10 is returned to its original position, the pulley plates 8Ba and 8Bb of the second split pulley 6B approach each other, and the winding radius of the transmission belt 7 at the second split pulley 6B becomes large. In the first split pulley 6A, the two pulley plates 8Aa and 8Ab are separated from each other, so that the shift operation is performed to the low speed side.
【００１２】そして、上記ベルト式無段変速装置１にお
いて、両回転軸５Ａ，５Ｂをともに中空状に形成し、そ
の一方の端面においてその軸内空間Ｉを外気に連通させ
てある。また、それぞれの割プーリ６Ａ，６Ｂにおい
て、２枚のプーリ板の間Ｓと前記軸内空間Ｉとを、両回
転軸５Ａ，５Ｂの周面に形成した連通孔ｈを介して連通
させてある。つまり、ベルト式無段変速１においては不
可避的に生じる割プーリ６Ａ，６Ｂと伝動ベルト７との
間の摩擦に起因した発熱を、その発生箇所に近いプーリ
板間空間Ｓから回転軸５Ａ，５Ｂの軸内空間Ｉを介して
外気を逃がすことで、冷却効果を高めるように構成して
ある。Further, in the belt type continuously variable transmission 1, both rotary shafts 5A and 5B are formed in a hollow shape, and one end surface of the rotary shafts 5A and 5B communicates with the internal space I of the shaft. Further, in each of the split pulleys 6A and 6B, the space S between the two pulley plates and the shaft inner space I are made to communicate with each other via a communication hole h formed in the peripheral surfaces of both the rotary shafts 5A and 5B. That is, in the belt type continuously variable transmission 1, heat generated due to friction between the split pulleys 6A and 6B and the transmission belt 7 which is inevitably generated is generated from the space S between the pulley plates near the place where the heat is generated to the rotating shafts 5A and 5B. The cooling effect is enhanced by allowing the outside air to escape through the shaft inner space I.
【００１３】図２に示すように、前記連通孔ｈを、回転
軸５Ａ，５Ｂの径方向に対して傾斜姿勢に形成してあ
る。これにより、図中実線で示すように、回転軸５Ａ，
５Ｂが図中時計方向に回転する場合には軸内空間Ｉから
プーリ板間空間Ｓへの空気の流れが、一方、図中二点鎖
線で示すように、回転軸５Ａ，５Ｂが図中反時計方向に
回転する場合には、プーリ板間空間Ｓから軸内空間Ｉへ
の空気の流れが、何れも、回転に伴なう遠心力の作用で
促進されることとなり、冷却効果を一層高めることがで
きるように構成してある。As shown in FIG. 2, the communication hole h is formed in an inclined posture with respect to the radial direction of the rotary shafts 5A and 5B. As a result, as shown by the solid line in the figure, the rotary shaft 5A,
When 5B rotates in the clockwise direction in the figure, the air flow from the in-shaft space I to the inter-pulley plate space S, while the rotating shafts 5A and 5B move in the opposite direction as shown by the two-dot chain line in the figure. When rotating in the clockwise direction, the flow of air from the space S between the pulley plates to the space I in the shaft is promoted by the action of the centrifugal force associated with the rotation, which further enhances the cooling effect. It is configured to be able to.
【００１４】一方、図１に示すように、入力プーリ２の
無段変速装置１側の側面に羽根体２０を付設して、入力
プーリ２の回転運動を利用して無段変速装置１冷却用の
風を発生させるように構成するとともに、図３及び図４
に示すように、無段変速装置１の外装カバー２１の周面
に多数のフィン２２を形成し、前記入力プーリ２と無段
変速装置１の外装カバー２１の全体を覆う状態で、前記
入力プーリ２に付設の羽根体２０により起こした風を外
装カバー２１に沿って案内するガイド、２３を設けてあ
り、無段変速装置１の冷却効果を高めるように構成して
ある。On the other hand, as shown in FIG. 1, a blade body 20 is attached to the side surface of the input pulley 2 on the side of the continuously variable transmission 1 to cool the continuously variable transmission 1 by utilizing the rotational movement of the input pulley 2. 3 and FIG. 4 while being configured to generate the wind of
As shown in FIG. 3, a large number of fins 22 are formed on the outer peripheral surface of the outer cover 21 of the continuously variable transmission 1 so that the input pulley 2 and the outer cover 21 of the continuously variable transmission 1 are entirely covered. Guides 23 are provided for guiding the wind generated by the blade body 20 attached to 2 along the exterior cover 21, and are configured to enhance the cooling effect of the continuously variable transmission 1.
【００１５】前述した連通孔のｈの構造や設置形態等の
具体構成において適宜変更可能であり、例えば、先の実
施例では、回転軸５Ａ，５Ｂの径方向に対して傾斜姿勢
に形成していたが、径方向に沿う姿勢に形成してもよ
く、また、回転軸５Ａ，５Ｂの回転方向と傾斜姿勢に形
成する場合の傾斜方向とは同じでも逆でもよく、さらに
連通孔ｈの設置個数はいくつでもよく、規則的に形成し
てもランダムに形成してもよい。It is possible to appropriately change the specific structure such as the structure and installation form of the communication hole h described above. For example, in the above embodiment, the rotation shafts 5A and 5B are formed in an inclined posture with respect to the radial direction. However, it may be formed in a posture along the radial direction, and the rotation direction of the rotating shafts 5A and 5B and the tilt direction in the case of forming the tilt posture may be the same as or opposite to each other. May be formed in any number, and may be formed regularly or randomly.
【００１６】本発明の作業車のベルト式無段変速装置が
搭載される作業車の種類は不問である。There is no limitation on the type of work vehicle on which the belt type continuously variable transmission of the work vehicle of the present invention is mounted.
【００１７】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.
【図１】ベルト式無段変速装置の縦断平面図FIG. 1 is a vertical plan view of a belt type continuously variable transmission.
【図２】回転軸の断面図FIG. 2 is a sectional view of a rotary shaft.
【図３】コンバインの伝動装置の概略図FIG. 3 is a schematic view of a combine transmission device.
【図４】無段変速装置の横断面図FIG. 4 is a cross-sectional view of a continuously variable transmission.
５Ａ，５Ｂ 回転軸 ６Ａ，６Ｂ 割プーリ ７ 伝動ベルト ８Ａａ，８Ａｂ，８Ｂａ，８Ｂｂ プーリ板 Ｓ プーリ板間の空間 Ｉ 軸内空間 ｈ 連通孔 5A, 5B Rotating shaft 6A, 6B Split pulley 7 Transmission belt 8Aa, 8Ab, 8Ba, 8Bb Pulley plate S Space between pulley plates I Shaft space h Communication hole
Claims (2)
ｂ），（８Ｂａ），（８Ｂｂ）を互いに接離自在に回転
軸（５Ａ），（５Ｂ）に外嵌した割プーリ（６Ａ），
（６Ｂ）の一対間に亙って、伝動ベルト（７）を架設し
た作業車のベルト式無段変速装置において、前記回転軸
（５Ａ），（５Ｂ）を中空状に形成してその軸内空間
（Ｉ）を外気に連通させるとともに、前記２枚のプーリ
板（８Ａａ），（８Ａｂ），（８Ｂａ），（８Ｂｂ）間
の空間（Ｓ）と前記軸内空間（Ｉ）とを連通させる連通
孔（ｈ）を、前記回転軸（５Ａ），（５Ｂ）に形成して
ある作業車のベルト式無段変速装置。1. Two pulley plates (8Aa), (8A)
b), (8Ba), and (8Bb) are attached to and separated from each other by rotating shafts (5A) and (5B), and a split pulley (6A),
In a belt type continuously variable transmission for a work vehicle in which a transmission belt (7) is installed between a pair of (6B), the rotary shafts (5A) and (5B) are formed in a hollow shape and The space (I) is communicated with the outside air, and the space (S) between the two pulley plates (8Aa), (8Ab), (8Ba), (8Bb) is communicated with the axial space (I). A belt type continuously variable transmission for a work vehicle in which a communication hole (h) is formed in the rotary shafts (5A) and (5B).
Ａ），（５Ｂ）の径方向に対して傾斜姿勢に形成してあ
る請求項１記載の作業車のベルト式無段変速装置。2. The rotary shaft (5) is provided with the communication hole (h).
2. A belt type continuously variable transmission for a work vehicle according to claim 1, wherein the belt type continuously variable transmission is formed in an inclined posture with respect to the radial directions of A) and (5B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9514194A JPH07301307A (en) | 1994-05-09 | 1994-05-09 | Belt type continuously variable transmission of working vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9514194A JPH07301307A (en) | 1994-05-09 | 1994-05-09 | Belt type continuously variable transmission of working vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07301307A true JPH07301307A (en) | 1995-11-14 |
Family
ID=14129533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9514194A Pending JPH07301307A (en) | 1994-05-09 | 1994-05-09 | Belt type continuously variable transmission of working vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07301307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308070A (en) * | 2004-04-20 | 2005-11-04 | Sumitomo Heavy Ind Ltd | Reduction gear |
| EP1624230A3 (en) * | 2004-08-05 | 2010-06-09 | Honda Motor Co., Ltd. | Motor cooling structure for electric vehicle |
-
1994
- 1994-05-09 JP JP9514194A patent/JPH07301307A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308070A (en) * | 2004-04-20 | 2005-11-04 | Sumitomo Heavy Ind Ltd | Reduction gear |
| EP1624230A3 (en) * | 2004-08-05 | 2010-06-09 | Honda Motor Co., Ltd. | Motor cooling structure for electric vehicle |
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