JPS63130438A - Working truck - Google Patents

Working truck

Info

Publication number
JPS63130438A
JPS63130438A JP27699386A JP27699386A JPS63130438A JP S63130438 A JPS63130438 A JP S63130438A JP 27699386 A JP27699386 A JP 27699386A JP 27699386 A JP27699386 A JP 27699386A JP S63130438 A JPS63130438 A JP S63130438A
Authority
JP
Japan
Prior art keywords
engine
starting
state
switch
sensor
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
Application number
JP27699386A
Other languages
Japanese (ja)
Inventor
Masashi Osuga
正史 大須賀
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP27699386A priority Critical patent/JPS63130438A/en
Publication of JPS63130438A publication Critical patent/JPS63130438A/en
Pending legal-status Critical Current

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  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

PURPOSE:To protect a starting gear from damaging due to erroneous starting of a self starting motor, by providing a means for blocking start of the self starting motor during operation of an engine based on a detection signal being fed from a sensor for detecting the operating condition of the engine. CONSTITUTION:When an engine 1 is operating, a sensor 14, i.e. an oil pressure switch, is in OFF state, thereby first transistor Q1 is set to OFF state. Consequently, an active function second transistor Q2 of a relay switch 17 arranged in a signal path 16 for starting a self starting motor 12 is set to OFF state. As a result, power is not fed to the signal path 16 even if a key switch 13 is operated to the starting position ST of the self starting motor 12 and the self starting motor 12 is not started, resulting in protection of a starting pinion gear 12a from damage due to erroneous starting of the self starting motor 12 during operation of the engine 1.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は作業車に関し、詳しくは、セルモータによって
始動されるエンジンを備えた作業車の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a working vehicle, and more particularly to an improvement of a working vehicle equipped with an engine started by a starter motor.

〔従来の技術〕[Conventional technology]

従来、作業車に備えたセルモータは、キースイッチ等の
操作によって起動操作される(参考文献記載せず)。
Conventionally, a starter motor provided in a work vehicle is activated by operating a key switch or the like (references not listed).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

一般にセルモータを起動するスイッチは人為操作が解除
されると、エンジンの稼動を維持する位置まで復帰する
ようバネ等で付勢され、エンジンを始動する場合にはこ
のスイッチをセルモータの起動位置まで操作し、次に、
エンジンの始動をエンジン音等で確認した後、このスイ
ッチから手を放すことでスイッチをエンジン稼動位置ま
で復帰させると同時にセルモータの作動を停止しそいる
Generally, the switch that starts the starter motor is biased by a spring or the like to return to the position that maintains engine operation when the manual operation is released, and when starting the engine, operate this switch to the starting position of the starter motor. ,next,
After confirming that the engine has started by listening to the engine sound, etc., release the switch to return the switch to the engine operating position and at the same time stop the starter motor.

又、セルモータを起動するスイッチでセルモータを起動
した際、エンジンが始動しない場合でも、このスイッチ
から手を放すと、スイッチはエンジン稼動維持位置まで
復帰するため、このスイッチの操作位置ではエンジンが
稼動状態であるかどうかを判別できず、例えば、騒音の
中で作業する場合、のように、アイドリング状態のエン
ジン音を聞き取れないときには、エンジンが稼動状態に
あるに拘らず誤ってセルモータを起動して始動ギヤ等を
損傷することがあった。
In addition, even if the engine does not start when the starter motor is started using the switch that starts the starter motor, when you let go of this switch, the switch returns to the engine operation maintenance position, so the engine is in the operating state in the operating position of this switch. For example, if you are working in a noisy environment and cannot hear the sound of an idling engine, you may accidentally start the starter motor and start the engine even if the engine is running. This may cause damage to gears, etc.

本発明の目的は合理的な改良によって、エンジンの稼動
中にはセルモータを起動させない作集中を得る点にある
An object of the present invention is to obtain, through reasonable improvement, an operation mode in which the starter motor is not started while the engine is running.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の特徴は、エンジンの稼動状態を検出するセンサ
及び、このセンサからの検出信号に基づいて、エンジン
稼動時における起動操作によるセルモータの起動を阻止
する牽制手段を設けてある点にあり、その作用、及び効
果は次の・通りである。
The present invention is characterized in that it is provided with a sensor that detects the operating state of the engine, and a check means that prevents starting of the starter motor by a starting operation when the engine is running, based on a detection signal from this sensor. The actions and effects are as follows.

〔作 用〕[For production]

上記特徴を例えば第1図に示すように構成すると、エン
ジン(1)が稼動している場合にはセンサ(14)とし
てのオイルプレッシャスイッチがOFF状態にあるため
、第1トランジスタ(Q、)がOFF状態に設定され、
この結果、セルモータ(12)を起動させる信号経路(
16)に介装されたリレースイッチ(17)の動作用の
第2トランジスタ(Q2)がOFF状態に設定されるこ
とになる。
If the above characteristics are configured as shown in FIG. 1, for example, when the engine (1) is running, the oil pressure switch as the sensor (14) is in the OFF state, so the first transistor (Q,) is turned off. is set to OFF state,
As a result, the signal path (
The second transistor (Q2) for operating the relay switch (17) interposed in the relay switch (16) is set to the OFF state.

このため、キースイッチ(13)をセルモータ(12)
の起動位置(ST)まで操作しても前記信号経路(16
)には通電せずセルモータ(12)も起動しない。
For this reason, the key switch (13) must be connected to the starter motor (12).
Even if the operation reaches the starting position (ST) of the signal path (16
) is not energized and the starter motor (12) does not start.

〔発明の効果〕〔Effect of the invention〕

従って、電気回路を附加する程度の改造によって、エン
ジンの稼動中におけるセルモータ誤起動による起動ギヤ
等の損傷を未然に防止することができるようになった。
Therefore, by modifying the engine to the extent of adding an electric circuit, it has become possible to prevent damage to the starting gear and the like due to erroneous activation of the starter motor while the engine is running.

〔実施例〕〔Example〕

以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

第2図に示すように、前部にエンジン(1)を備えると
共に、該エンジン(1)の後面にクラッチハウジング(
2)とミッションケース(3)とを順次連結して車体を
形成し、又、この車体の前後夫々に走行車輪(4) 、
 (5)を備え、作業車の一例としての農用トラクタを
構成する。
As shown in Fig. 2, an engine (1) is provided at the front, and a clutch housing (1) is provided at the rear of the engine (1).
2) and the transmission case (3) are successively connected to form a vehicle body, and running wheels (4) are attached to the front and rear of this vehicle body, respectively.
(5) to constitute an agricultural tractor as an example of a working vehicle.

同図に示すようにエンジン(1)は冷却ファン(6)、
ラジェータ(7)等と共にボンネット(8)に内装され
、又、車体の中央部には運転座席(9)、ステアリング
ハンドル(10) 、メータパネル(11)等を備えて
いる。
As shown in the figure, the engine (1) has a cooling fan (6),
It is housed inside the bonnet (8) together with a radiator (7), etc., and the central part of the vehicle body is equipped with a driver's seat (9), a steering wheel (10), a meter panel (11), etc.

当該農用トラクタではエンジン(1)の稼動中にセルモ
ータ(12)の誤操作を防止するための牽制手段(A)
を備えている。
The agricultural tractor includes a check means (A) for preventing erroneous operation of the starter motor (12) while the engine (1) is operating.
It is equipped with

即ち、第2図に示すように前記メータパネル(11)に
はエンジン(1)のセルモータ(12)を起動するスイ
ッチとしてのキースイッチ(13)が備えられ、このキ
ースイッチ(13)とセルモータ(12)との間に電気
回路で成る牽制手段(八)が介装され、更に、この牽制
手段(A)に対しては、エンジン(1)の稼動状態を潤
滑油の圧力を介して検出するセンサ(14) (このセ
ンサ(14)は油圧の上昇によってON状態からOFF
状態に切換わるよう構成されている)からの信号が入力
されるよう信号経路が形成されている。
That is, as shown in FIG. 2, the meter panel (11) is equipped with a key switch (13) as a switch for starting the starter motor (12) of the engine (1), and the key switch (13) and the starter motor ( A checking means (8) consisting of an electric circuit is interposed between the engine and the engine (12), and the checking means (A) is further configured to detect the operating state of the engine (1) through the pressure of lubricating oil. Sensor (14) (This sensor (14) changes from ON to OFF due to increase in oil pressure.
A signal path is formed to receive a signal from the device (configured to switch the state).

又、キースイッチ(13)はセルモータ(12)を起動
する第3操作位置(ST)と、エンジン(1)の稼動状
態を維持する第2操作位置(AC)と、エンジン(1)
を停止する第1操作位置(OFF)との3位置に操作可
能であり、エンジン(1)の始動時にはキースイッチ(
13)を第1操作位置(OFF)から、第2操作位置(
AC)を通過して第3操作位置<ST)に操作すること
で行い、エンジン(1)の始動後キースイッチ(13)
から手を放すことで該キースイッチ(13)は自然に第
2操作位置(AC)に復帰するようバネ付勢されている
Further, the key switch (13) has a third operation position (ST) for starting the starter motor (12), a second operation position (AC) for maintaining the operating state of the engine (1), and a second operation position (AC) for starting the starter motor (12).
It can be operated in three positions, including the first operating position (OFF) to stop the engine, and the key switch (OFF) when starting the engine (1).
13) from the first operating position (OFF) to the second operating position (OFF).
AC) to the third operation position <ST), and after starting the engine (1), press the key switch (13).
The key switch (13) is spring-biased so that it naturally returns to the second operating position (AC) when the key switch (13) is released.

又、セルモータ(12)は起動信号の印加によってピニ
オンギヤ(12a)を突出させると共に、セルモータ(
12”)の起動用の電力を供給するリレーボックス機構
(15)を備え、牽制手段(A)は、前記センサ(14
)のOFF状態への切換りによってOFF状態に切換え
られる第1トランジスタ(Q I )と、キースイッチ
(13)が第3操作位置(ST)に操作された場合の信
号を伝える信号経路(16)に介装されたりレースイン
チ(17)と、このリレースイッチ(17)をON・O
FF操作する第2トランジスタ(Qz)と、キースイッ
チ(13)が第3操作位置(ST)に操作された場合に
ON状態に設定される第3トランジスタ(Q3)と、タ
イマ用のコンデンサ(18)とを備えて成っている。
Further, the starter motor (12) causes the pinion gear (12a) to protrude by applying a start signal, and the starter motor (
The check means (A) includes a relay box mechanism (15) that supplies power for starting the sensor (12'').
) is switched to the OFF state by switching to the OFF state, and a signal path (16) that transmits a signal when the key switch (13) is operated to the third operating position (ST). Turn the relay switch (17) on and off with the race inch (17) interposed in the
A second transistor (Qz) for FF operation, a third transistor (Q3) that is set to the ON state when the key switch (13) is operated to the third operation position (ST), and a timer capacitor (18 ).

そして、エンジン(1)の始動時には、潤滑油圧が低セ
センサ(14)がON状態なのでキースイッチ(13)
を第2操作位置(AC)に設定した段階で、第1トラン
ジスタ(Ql)からの電流によってコンデンサ(18)
が充電され、第2トランジスタ(0□)はON状態にな
り、この後キースイッチ(13)が第3操作位置(ST
)に操作されるだけでリレースイッチ(17)がON操
作されてセルモータ(12)が起動する。
When starting the engine (1), the lubricating oil pressure is low and the sensor (14) is in the ON state, so the key switch (13) is turned on.
When set to the second operating position (AC), the current from the first transistor (Ql) causes the capacitor (18) to
is charged, the second transistor (0□) turns on, and then the key switch (13) moves to the third operating position (ST).
), the relay switch (17) is turned on and the starting motor (12) is activated.

因に、このようにキースイッチ(13)が第3操作位置
(ST)に操作されることで第3トランジスタ(Q3)
はON状態になって第1トランジスタ(01)からの電
流をアースすることになるが、前記コンデンサ(18)
に充電された電流によって第2トランジスタ(Q2)の
ON作動が可能であり、かつ、リレースイッチ(17)
がON状態に設定されると、リレースイッチ(17)か
らの電圧によって第2トランジスタ(Q2)のON状態
が保持されるためエンジン(1)の始動時にはキースイ
ッチ(13)を第3操作位置(ST)に操作する間セル
モータ(12)が作動するよう構成されている。
Incidentally, when the key switch (13) is operated to the third operation position (ST) in this way, the third transistor (Q3)
is turned on and the current from the first transistor (01) is grounded, but the capacitor (18)
The second transistor (Q2) can be turned ON by the current charged in the relay switch (17).
When the key switch (13) is set to the ON state, the voltage from the relay switch (17) holds the second transistor (Q2) in the ON state, so when starting the engine (1), the key switch (13) is moved to the third operating position ( The starter motor (12) is configured to operate during the operation to ST).

次に、エンジン(1)が稼動すると潤滑油圧の上昇によ
って前記センサ(14)がOFF状態に切換ねることか
ら第1トランジスタ(Ql)をOFF状態に設定し、又
、このようにセンサ(14)がOFF状態に切換ねって
から所定時間の経過によってコンデンサ(18)は放電
を完了しているため第2トランジスタ(Q2)はOFF
状態に設定される。
Next, when the engine (1) is started, the sensor (14) is switched to the OFF state due to an increase in lubricating oil pressure, so the first transistor (Ql) is set to the OFF state, and the sensor (14) is Since the capacitor (18) has completed discharging after a predetermined period of time has passed since the switch was switched to the OFF state, the second transistor (Q2) is turned OFF.
set to state.

従って、このようにエンジン(1)が稼動している状態
でキースイッチ(13)を第3操作位置(ST)に設定
してもリレースイッチ(17)はON操作されず、セル
モータ(12)も作動しないのである。
Therefore, even if the key switch (13) is set to the third operation position (ST) while the engine (1) is running, the relay switch (17) will not be turned on and the starter motor (12) will not be turned on. It doesn't work.

因に、ダイオード(19) 、 (19)はコンデンサ
(18)に対する電流の逆流防止用であり、コンデンサ
(18)の放電時間はコンデンサ(18)の容量と、2
つの抵抗器(20) 、 (20)の値によって定まる
Incidentally, the diodes (19) and (19) are used to prevent current from flowing back into the capacitor (18), and the discharge time of the capacitor (18) is determined by the capacitance of the capacitor (18) and 2
It is determined by the values of the two resistors (20) and (20).

C別実施例〕 本発明は上記実施例以外に例えば、エンジンの稼動状態
を検出するセンサを、エンジンクランク軸の回転で発電
する機構と、この機構が発電状態にあり、かつ、セルモ
ータが非作動状態であることを判別する機構とで構成す
ることも可能であり、牽制手段もサイリスタを用いる等
様々に実施可能である。
Embodiment C] In addition to the above-mentioned embodiments, the present invention also provides a mechanism that generates electricity from a sensor that detects the operating state of the engine by the rotation of the engine crankshaft, and a mechanism that generates electricity by the rotation of the engine crankshaft. It is also possible to configure it with a mechanism for determining the state, and the checking means can be implemented in various ways, such as using a thyristor.

又、作業車としての運搬車に当該発明を実施することも
可能である。
Further, it is also possible to implement the invention on a transport vehicle as a working vehicle.

尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。
Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

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

図面は本発明に係る作業車の実施例を示し、第1図は牽
制手段を示す電気回路図、第2図は農用トラクタの全体
側面図である。 (1)・・・・・・エンジン、(12)・・・・・・セ
ルモータ、(14)・・・・・・センサ、(A)・・・
・・・牽制手段。
The drawings show an embodiment of the working vehicle according to the present invention, FIG. 1 is an electric circuit diagram showing a restraining means, and FIG. 2 is an overall side view of the agricultural tractor. (1)...Engine, (12)...Cell motor, (14)...Sensor, (A)...
...a means of restraint.

Claims (1)

【特許請求の範囲】[Claims]  エンジン(1)の稼動状態を検出するセンサ(14)
及び、このセンサ(14)からの検出信号に基づいて、
エンジン稼動時における起動操作によるセルモータ(1
2)の起動を阻止する牽制手段(A)を設けてある作業
車。
A sensor (14) that detects the operating state of the engine (1)
And based on the detection signal from this sensor (14),
Start-up operation when the engine is running (1)
2) A work vehicle equipped with a check means (A) that prevents the activation of the work vehicle.
JP27699386A 1986-11-20 1986-11-20 Working truck Pending JPS63130438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27699386A JPS63130438A (en) 1986-11-20 1986-11-20 Working truck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27699386A JPS63130438A (en) 1986-11-20 1986-11-20 Working truck

Publications (1)

Publication Number Publication Date
JPS63130438A true JPS63130438A (en) 1988-06-02

Family

ID=17577268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27699386A Pending JPS63130438A (en) 1986-11-20 1986-11-20 Working truck

Country Status (1)

Country Link
JP (1) JPS63130438A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520269A (en) * 2019-12-27 2020-08-11 江苏恩达通用设备有限公司 Starting protection method for marine diesel engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123656U (en) * 1984-07-17 1986-02-12 パロマ工業株式会社 Structure of the combustion chamber of a water heater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123656U (en) * 1984-07-17 1986-02-12 パロマ工業株式会社 Structure of the combustion chamber of a water heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520269A (en) * 2019-12-27 2020-08-11 江苏恩达通用设备有限公司 Starting protection method for marine diesel engine

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