JPS6340686B2 - - Google Patents

Info

Publication number
JPS6340686B2
JPS6340686B2 JP58123610A JP12361083A JPS6340686B2 JP S6340686 B2 JPS6340686 B2 JP S6340686B2 JP 58123610 A JP58123610 A JP 58123610A JP 12361083 A JP12361083 A JP 12361083A JP S6340686 B2 JPS6340686 B2 JP S6340686B2
Authority
JP
Japan
Prior art keywords
way clutch
reverse
wheel
wheel drive
clutch
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
Application number
JP58123610A
Other languages
Japanese (ja)
Other versions
JPS6015226A (en
Inventor
Yukihiro Kodama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subaru Corp
Original Assignee
Fuji Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Heavy Industries Ltd filed Critical Fuji Heavy Industries Ltd
Priority to JP12361083A priority Critical patent/JPS6015226A/en
Publication of JPS6015226A publication Critical patent/JPS6015226A/en
Publication of JPS6340686B2 publication Critical patent/JPS6340686B2/ja
Granted legal-status Critical Current

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  • Motor Power Transmission Devices (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は、2、4輪駆動切換用のトランスフア
装置を有して必要に応じ4輪駆動に切換えるパー
トタイム式、またはトランスフア装置を有しない
で常時4輪駆動するフルタイム式の4輪駆動車に
関し、特に前後輪の伝動系の途中にワンウエイク
ラツチを設けたものに関する。
The present invention is applicable to a part-time type that has a transfer device for switching between two and four-wheel drive and switches to four-wheel drive when necessary, or a full-time type that does not have a transfer device and constantly drives four wheels. This invention relates to drive vehicles, and particularly relates to vehicles with one-way clutches installed in the middle of the transmission system for front and rear wheels.

【従来の技術と課題】[Conventional technology and issues]

センターデフをもたない4輪駆動車として、例
えば特開昭55−4292号公報に示されるように前後
輪の伝動系をクラツチで直結したものが提案され
ている。しかしながら、この前後輪直結式では4
輪駆動での旋回時に前後輪の旋回半径に差を生じ
ると、所謂タイトコーナブレーキング現象を生じ
る。そこで、かかるブレーキング現象を回避する
ため、例えば特開昭57−15019号公報に示される
ように、転舵角による2輪駆動への自動切換装置
が必要になつて構造が複雑化し、更に路面状態等
によりブレーキング現象の発生が変化する場合
に、その回避を的確に行い難い等の問題がある。 また、ワンウエイクラツチを有するものとして
特公昭48−42137号公報がある。 本発明は、このような事情に鑑み、センターデ
フを有することなく前後輪を直結して4輪駆動す
る方式において、旋回時にブレーキング現象の発
生状況に応じて自動的にそれを回避すると共に、
4輪駆動による前進の減速の際にエンジンブレー
キを作用させるようにした4輪駆動車を提供する
ことを目的とする。
As a four-wheel drive vehicle without a center differential, a vehicle in which the transmission systems of the front and rear wheels are directly connected by a clutch has been proposed, for example, as shown in Japanese Patent Application Laid-open No. 55-4292. However, with this front and rear wheel direct connection type, 4
When turning with wheel drive, if there is a difference in the turning radius of the front and rear wheels, a so-called tight corner braking phenomenon occurs. Therefore, in order to avoid such a braking phenomenon, an automatic switching device to two-wheel drive based on the steering angle is required, as shown in Japanese Patent Application Laid-Open No. 57-15019, which makes the structure complicated and further improves the road surface. When the occurrence of a braking phenomenon changes depending on the state, etc., there is a problem that it is difficult to avoid it accurately. Furthermore, Japanese Patent Publication No. 48-42137 has a one-way clutch. In view of these circumstances, the present invention is a four-wheel drive system in which the front and rear wheels are directly connected without having a center differential, and the present invention automatically avoids braking phenomena depending on the occurrence of the phenomenon when turning.
To provide a four-wheel drive vehicle in which engine braking is applied during forward deceleration by four-wheel drive.

【課題を解決するための手段】[Means to solve the problem]

上記目的を達成するため、本発明は、前後輪の
いずれか一方へはデフ装置を介して直接伝動構成
し、他方へは2、4輪切換クラツチと方向変換用
ギヤとからなるトランスフア装置を介して伝動構
成し、上記方向変換用ギヤのギヤ軸と上記前後輪
の他方を駆動するドライブ軸とを同一軸線上に配
設してなる2、4輪駆動装置において、上記ギヤ
軸に連結ドラムを一体的に結合し、上記ドライブ
軸に、前進用ワンウエイクラツチと後進用ワンウ
エイクラツチとを隣接して設け、上記前進用ワン
ウエイクラツチ、後進用ワンウエイクラツチと上
記連結ドラムとの間に、スライドスリーブを装架
し、上記前進用ワンウエイクラツチと上記後進用
ワンウエイクラツチの何れか一方を上記スライド
スリーブによつて、上記連結ドラムに選択的に嵌
合させる構成になつている。
In order to achieve the above object, the present invention provides direct transmission to one of the front and rear wheels via a differential device, and a transfer device consisting of a two- and four-wheel switching clutch and a direction changing gear to the other wheel. In a two- or four-wheel drive device, the gear shaft of the direction conversion gear and the drive shaft for driving the other of the front and rear wheels are disposed on the same axis, and a drum connected to the gear shaft. A forward one-way clutch and a reverse one-way clutch are provided adjacent to each other on the drive shaft, and a slide sleeve is provided between the forward one-way clutch, the reverse one-way clutch, and the connecting drum. One of the forward one-way clutch and the reverse one-way clutch is selectively fitted onto the connecting drum by the slide sleeve.

【実施例】【Example】

以下、図面を参照して本発明の一実施例を具体
的に説明する。第1図において本発明による4輪
駆動車の伝動系について説明すると、RRの2輪
駆動をベースにしたものであり、符号1はエンジ
ン、クラツチ及び変速機を有する駆動装置であ
り、これが後輪デフ装置2、後輪車軸3を介して
後輪4に直接的に伝動構成される。また、後輪デ
フ装置2はトランスフア装置5の2、4輪切換用
トランスフアクラツチ6、方向変換用ギヤ7を介
して2組のワンウエイクラツチ8,9に連結さ
れ、更にプロペラ軸10、前輪デフ装置11、前
輪車軸12を介して前輪13に伝動構成される。 第2図において、ワンウエイクラツチ8,9の
部分について詳記すると、ギヤ軸14とプロペラ
軸10へのドライブ軸15が同軸上に配置され、
ギヤ軸14に連結ドラム16が一体的に結合し、
ドライブ軸15に後進用ワンウエイクラツチ8と
前進用ワンウエイクラツチ9が隣設され、これら
のワンウエイクラツチ8,9と連結ドラム16と
の間にスライドスリーブ17が装架される。この
スリーブ17は前後にスプライン内歯17a,1
7bを有し、後方のスプライン内歯17bを常に
連結ドラム16の外歯16aに嵌合した状態で軸
方向移動して、前方のスプライン内歯17aをワ
ンウエイクラツチ8,9の外歯8a,9aの一方
に選択的に嵌合するようになつている。 ここで、前進用ワンウエイクラツチ9はアウタ
レース9bを、例えば第1図の実線矢印Aに示す
前進回転方向に回転する際にインナレース9cを
一体化して動力伝達し、このときインナレース9
cがアウタレース9bより速く回転するのを許容
する。また、後進用ワンウエイクラツチ8は、ア
ウタレース8bとインナレース8cとが上述と逆
の回転方向で全く同様に作用する。 次いで制御系について説明すると、負圧式アク
チユエータ20が連結杆21を介して上記スリー
ブ17に連結され、このアクチユエータ20から
の通路22がソレノイド弁23の通電又は非通電
により吸入管側通路24、又は大気ポート25に
切換えられる。そして、後進段へのシフト時にオ
ンするリバーススイツチ26と4輪駆動時にオン
する4WDスイツチ27とがAND回路29を介し
てOR回路30に接続される。なお、図中符号2
8,28は上記スイツチ26,27を介してそれ
ぞれ接地し、そのオン時に点灯する表示ランプで
ある。また、4WDスイツチ27は、アクセルペ
ダルの全閉時にオンするアクセルスイツチ31、
及び所定の車速以上でオンする車速スイツチ32
と共にAND回路33を介して上記OR回路30に
接続され、このOR回路30がトランジスタ34
を介してソレノイド弁23に接続されている。 このように構成されることから、トランスフア
クラツチ6を2輪駆動に切換えての前進走行時に
は、リバーススイツチ26、アクセルスイツチ3
1がオフしてAND回路29,33の出力が共に
Lレベルになることでソレノイド弁23は非通電
となる。そこで、アクチユエータ20は大気ポー
ト25に連通して大気圧になり、このため、アク
チユエータ20内の図示しないスプリングのスプ
リング力によりスリーブ17が後方(第2図の位
置)へ移動して連結ドラム16と前進用ワンウエ
イクラツチ9を一体結合する。かくして車両の2
輪前進走行時、トランスフア装置5のクラツチ6
が結合すると、駆動装置1の動力が後輪4に伝達
されると共に、そのクラツチ6、ワンウエイクラ
ツチ9、プロペラ軸10を介して前輪13にも伝
達され、4輪駆動の前進走行が行われる。そして
このとき、転舵されると前後輪13,4の旋回半
径の差に基づきワンウエイクラツチ9のアウタレ
ース9bとインナレース9cの一体化が解消し
て、インナレース9cと共に前輪13が速く回転
し、これによりブレーキング現象を生じることな
く円滑に旋回する。 また、この4輪駆動による前進時の減速の際に
4WDスイツチ27、車速スイツチ32と共にア
クセルスイツチ31がオンすると、AND回路3
3の出力がHレベルになつてソレノイド弁23に
通電する。そこで、アクチユエータ20には吸入
管負圧が導入されてスリーブ17を前方(第2図
の左方)へ移動することから、連結ドラム16が
後進用ワンウエイクラツチ8と一体結合するよう
になる。ここで、ワンウエイクラツチ8は、後進
時にインナレース8cの回転がアウタレース8b
より遅くなる際、または前進時にインナレース8
cの回転がアウタレース8bより速くなる際に一
体化するものであるため、4輪駆動の前進走行時
に後進用ワンウエイクラツチ8が選択されると、
インナレース8cがアウタレース8bより速く回
転することが許されなくなり、このワンウエイク
ラツチ8の作用により減速時は前輪13が直結状
態に保持され、こうして後輪4のみならず前輪1
3にもエンジンブレーキが作用する。 次いで、後進時にシフト操作するのに伴いリバ
ーススイツチ26がオンし、このとき4輪駆動状
態にあると4WDスイツチ27もオンしてAND回
路29の出力がHレベルになり、ソレノイド弁2
3に通電する。そこで、上記減速時の場合と同様
に後進用ワンウエイクラツチ8が選択され、前進
時と逆のギヤ軸14の回転により上記ワンウエイ
クラツチ8が一体化して前輪13にも動力伝達す
ることで、4輪駆動の後進走行が行われる。そし
てこの場合にも、転舵の際に後輪4に比べ前輪1
3の旋回半径の方が大きくなると、それに応じて
ワンウエイクラツチ8のアウタレース8bとイン
ナレース8cの一体化が解消し、前進時と同様に
前輪13が速く回転してブレーキング現象を生じ
ることなく円滑に旋回する。 なお、上記実施例ではRRベースのパートタイ
ム式について説明したが、FFベースのパートタ
イム式の場合、更には2、4輪駆動切換用のトラ
ンスフア装置を有しないフルタイム式の場合にも
適用し得る。
Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. To explain the transmission system of a four-wheel drive vehicle according to the present invention in FIG. 1, it is based on the two-wheel drive of RR, and reference numeral 1 is a drive system having an engine, a clutch, and a transmission. Transmission is directly transmitted to the rear wheels 4 via the differential device 2 and the rear wheel axle 3. The rear wheel differential device 2 is connected to two sets of one-way clutches 8 and 9 via a transfer device 5, a transfer clutch 6 for switching four wheels, and a gear 7 for changing direction, and is further connected to a propeller shaft 10, a front wheel Transmission is configured to the front wheels 13 via the differential device 11 and the front wheel axle 12. In FIG. 2, the one-way clutches 8 and 9 will be described in detail. The gear shaft 14 and the drive shaft 15 to the propeller shaft 10 are arranged coaxially,
A connecting drum 16 is integrally coupled to the gear shaft 14,
A reverse one-way clutch 8 and a forward one-way clutch 9 are disposed adjacent to the drive shaft 15, and a slide sleeve 17 is mounted between these one-way clutches 8, 9 and the connecting drum 16. This sleeve 17 has spline internal teeth 17a, 1 at the front and rear.
7b, and is moved in the axial direction with the rear spline internal teeth 17b always fitted to the external teeth 16a of the connecting drum 16, and the front spline internal teeth 17a are connected to the external teeth 8a, 9a of the one-way clutches 8, 9. It is designed to selectively fit into one of the two. Here, when the forward one-way clutch 9 rotates the outer race 9b, for example, in the forward rotation direction shown by the solid line arrow A in FIG. 1, it integrates the inner race 9c and transmits power.
c is allowed to rotate faster than outer race 9b. Further, the one-way clutch 8 for reverse movement operates in exactly the same manner when the outer race 8b and the inner race 8c are rotated in the opposite direction to that described above. Next, to explain the control system, a negative pressure actuator 20 is connected to the sleeve 17 via a connecting rod 21, and a passage 22 from the actuator 20 is connected to the suction pipe side passage 24 or the atmosphere by energizing or de-energizing the solenoid valve 23. Switched to port 25. A reverse switch 26 that is turned on when shifting to reverse gear and a 4WD switch 27 that is turned on when driving four wheels are connected to an OR circuit 30 via an AND circuit 29. In addition, code 2 in the figure
Reference numerals 8 and 28 indicate indicator lamps that are grounded via the switches 26 and 27, respectively, and are lit when turned on. The 4WD switch 27 also includes an accelerator switch 31 that is turned on when the accelerator pedal is fully closed;
and a vehicle speed switch 32 that turns on at a predetermined vehicle speed or higher.
and is connected to the OR circuit 30 through an AND circuit 33, and this OR circuit 30 is connected to the transistor 34.
The solenoid valve 23 is connected to the solenoid valve 23 via the solenoid valve 23. With this configuration, when driving forward with the transfer clutch 6 switched to two-wheel drive, the reverse switch 26 and the accelerator switch 3 are activated.
1 is turned off and the outputs of the AND circuits 29 and 33 both become L level, so that the solenoid valve 23 is de-energized. Then, the actuator 20 communicates with the atmospheric port 25 and becomes atmospheric pressure, so that the sleeve 17 moves rearward (to the position shown in FIG. 2) due to the spring force of the spring (not shown) inside the actuator 20 and connects with the connecting drum 16. The forward one-way clutch 9 is integrally connected. Thus vehicle 2
When the wheels are running forward, the clutch 6 of the transfer device 5
When these are coupled, the power of the drive device 1 is transmitted to the rear wheels 4, and also to the front wheels 13 via the clutch 6, one-way clutch 9, and propeller shaft 10, so that four-wheel drive forward travel is performed. At this time, when the steering is carried out, the integration of the outer race 9b and the inner race 9c of the one-way clutch 9 is dissolved based on the difference in the turning radius of the front and rear wheels 13 and 4, and the front wheel 13 rotates quickly together with the inner race 9c. This allows the vehicle to turn smoothly without causing any braking phenomena. In addition, when decelerating when moving forward with this four-wheel drive,
When the accelerator switch 31 is turned on together with the 4WD switch 27 and the vehicle speed switch 32, the AND circuit 3
The output of No. 3 becomes H level and the solenoid valve 23 is energized. Therefore, suction pipe negative pressure is introduced into the actuator 20 to move the sleeve 17 forward (to the left in FIG. 2), so that the connecting drum 16 is integrally connected to the one-way clutch 8 for reverse movement. Here, the one-way clutch 8 is such that when moving backward, the rotation of the inner race 8c is caused by the rotation of the outer race 8b.
Inner race 8 when slowing down or moving forward
Since the one-way clutch 8 is integrated when the rotation of the outer race 8b becomes faster than the outer race 8b, when the one-way clutch 8 for reverse is selected during forward driving in four-wheel drive,
The inner race 8c is no longer allowed to rotate faster than the outer race 8b, and the action of this one-way clutch 8 keeps the front wheels 13 in a directly connected state during deceleration.
Engine braking also works on 3. Next, the reverse switch 26 is turned on as the shift operation is performed when going backwards, and if the 4WD is in the 4WD state at this time, the 4WD switch 27 is also turned on, and the output of the AND circuit 29 becomes H level, and the solenoid valve 2
3 is energized. Therefore, the one-way clutch 8 for reverse is selected as in the case of deceleration, and the one-way clutch 8 is integrated with the rotation of the gear shaft 14 in the opposite direction to that during forward movement, and power is transmitted to the front wheels 13 as well, thereby transmitting power to the four wheels. The drive is running backwards. Also in this case, when steering, the front wheel 1 is smaller than the rear wheel 4.
When the turning radius of No. 3 becomes larger, the outer race 8b and inner race 8c of the one-way clutch 8 are no longer integrated, and the front wheel 13 rotates quickly and smoothly without any braking phenomenon, just like when moving forward. Turn around. Although the above embodiment describes a RR-based part-time type, it can also be applied to a FF-based part-time type, and even to a full-time type that does not have a transfer device for switching between 2- and 4-wheel drive. It is possible.

【発明の効果】【Effect of the invention】

以上の説明から明らかなように、本発明の4輪
駆動車によると、 前後輪のいずれか一方へはデフ装置を介して直
接伝動構成し、他方へは2、4輪切換クラツチと
方向変換用ギヤとからなるトランスフア装置を介
して伝動構成し、方向変換用ギヤのギヤ軸と前後
輪の他方を駆動するドライブ軸とを同一軸線上に
配設してなる2、4輪駆動装置において、ギヤ軸
に連結ドラムを一体的に結合し、ドライブ軸に、
前進用ワンウエイクラツチと後進用ワンウエイク
ラツチとを隣接して設け、前進用ワンウエイクラ
ツチ、後進用ワンウエイクラツチと連結ドラムと
の間に、スライドスリーブを装架し、前進用ワン
ウエイクラツチと後進用ワンウエイクラツチの何
れか一方をスライドスリーブによつて、連結ドラ
ムに選択的に嵌合させる構成としたので、4輪駆
動の前後進時における旋回時のブレーキング現象
が自動的に回避できる。 さらに、4輪駆動による前進時の減速の際に、
エンジンブレーキが4輪に作用するため、有効に
エンジンブレーキが作用する。 さらにまた、連結ドラムと前、後進用ワンウエ
イクラツチおよびスライドスリーブとの簡単な構
成なので、構造がコンパクトにまとめられると共
に、作動も確実に行なわれる。
As is clear from the above description, according to the four-wheel drive vehicle of the present invention, direct transmission is provided to one of the front and rear wheels via a differential device, and the other is provided with a two- and four-wheel switching clutch and a direction changer. In a two- or four-wheel drive device, the gear shaft of the direction changing gear and the drive shaft for driving the other of the front and rear wheels are disposed on the same axis, and the transmission is configured via a transfer device consisting of a gear. The connecting drum is integrally connected to the gear shaft, and the drive shaft is
A forward one-way clutch and a reverse one-way clutch are provided adjacent to each other, and a slide sleeve is installed between the forward one-way clutch, the reverse one-way clutch, and the connecting drum. Since either one is selectively fitted to the connecting drum using a slide sleeve, it is possible to automatically avoid a braking phenomenon when turning during forward and backward movement of the four-wheel drive. Furthermore, when decelerating when moving forward with four-wheel drive,
Since the engine brake acts on all four wheels, the engine brake acts effectively. Furthermore, the simple construction of the connecting drum, the forward and reverse one-way clutches, and the slide sleeve allows for a compact structure and reliable operation.

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

第1図は本発明による4輪駆動車の一実施例の
概略を示すスケルトン図、第2図は同要部の構成
及び制御系を示す構成図である。 1……駆動装置、2……後輪デフ装置、4……
後輪、5……トランスフア装置、8……後進用ワ
ンウエイクラツチ、9……前進用ワンウエイクラ
ツチ、13……前輪、14……ギヤ軸、15……
ドライブ軸、16……連結ドラム、17……スラ
イドスリーブ、20……アクチユエータ、23…
…ソレノイド弁、26……リバーススイツチ、2
7……4WDスイツチ、31……アクセルスイツ
チ、32……車速スイツチ。
FIG. 1 is a skeleton diagram schematically showing an embodiment of a four-wheel drive vehicle according to the present invention, and FIG. 2 is a configuration diagram showing the configuration and control system of the main parts. 1... Drive device, 2... Rear wheel differential device, 4...
Rear wheel, 5... Transfer device, 8... Reverse one-way clutch, 9... Forward one-way clutch, 13... Front wheel, 14... Gear shaft, 15...
Drive shaft, 16... Connection drum, 17... Slide sleeve, 20... Actuator, 23...
... Solenoid valve, 26 ... Reverse switch, 2
7...4WD switch, 31...Accelerator switch, 32...Vehicle speed switch.

Claims (1)

【特許請求の範囲】 1 前後輪のいずれか一方へはデフ装置を介して
直接伝動構成し、他方へは2、4輪切換クラツチ
と方向変換用ギヤとからなるトランスフア装置を
介して伝動構成し、上記方向変換用ギヤのギヤ軸
と上記前後輪の他方を駆動するドライブ軸とを同
一軸線上に配設してなる2、4輪駆動装置におい
て、 上記ギヤ軸に連結ドラムを一体的に結合し、上
記ドライブ軸に、前進用ワンウエイクラツチと後
進用ワンウエイクラツチとを隣接して設け、 上記前進用ワンウエイクラツチ、後進用ワンウ
エイクラツチと上記連結ドラムとの間に、スライ
ドスリーブを装架し、 上記前進用ワンウエイクラツチと上記後進用ワ
ンウエイクラツチの何れか一方を上記スライドス
リーブによつて、上記連結ドラムに選択的に嵌合
させる構成としたことを特徴とする4輪駆動車。
[Claims] 1. Direct transmission to one of the front and rear wheels through a differential device, and transmission to the other through a transfer device consisting of a two- or four-wheel switching clutch and a direction changing gear. In a two- or four-wheel drive device in which a gear shaft of the direction conversion gear and a drive shaft for driving the other of the front and rear wheels are arranged on the same axis, a connecting drum is integrally connected to the gear shaft. a forward one-way clutch and a reverse one-way clutch are provided adjacent to each other on the drive shaft, and a slide sleeve is mounted between the forward one-way clutch, the reverse one-way clutch and the connecting drum, A four-wheel drive vehicle characterized in that one of the forward one-way clutch and the reverse one-way clutch is selectively fitted to the coupling drum by the slide sleeve.
JP12361083A 1983-07-07 1983-07-07 Four-wheel drive car Granted JPS6015226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12361083A JPS6015226A (en) 1983-07-07 1983-07-07 Four-wheel drive car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12361083A JPS6015226A (en) 1983-07-07 1983-07-07 Four-wheel drive car

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP13360484A Division JPS6022531A (en) 1984-06-27 1984-06-27 Four-wheel drive vehicle
JP13360384A Division JPS6022530A (en) 1984-06-27 1984-06-27 Four-wheel drive vehicle

Publications (2)

Publication Number Publication Date
JPS6015226A JPS6015226A (en) 1985-01-25
JPS6340686B2 true JPS6340686B2 (en) 1988-08-12

Family

ID=14864860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12361083A Granted JPS6015226A (en) 1983-07-07 1983-07-07 Four-wheel drive car

Country Status (1)

Country Link
JP (1) JPS6015226A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121150U (en) * 1984-01-24 1985-08-15 ネポン株式会社 small boiler
JPS6227829U (en) * 1985-08-02 1987-02-20
JPH0542897Y2 (en) * 1985-08-07 1993-10-28
JPS6249433U (en) * 1985-09-18 1987-03-27
JPS62163425U (en) * 1986-04-07 1987-10-17
JPH02120831U (en) * 1989-03-15 1990-09-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842137A (en) * 1971-10-01 1973-06-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842137A (en) * 1971-10-01 1973-06-19

Also Published As

Publication number Publication date
JPS6015226A (en) 1985-01-25

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