JPS6238822Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a clutch warning device for driving a car.

<Background of the invention> When driving a car, driving with your foot on the clutch pedal is commonly called clutch riding. If you drive with your foot on the clutch pedal,
It is known that the clutch operates in a state close to a half-clutch, resulting in wear of the clutch plate. Additionally, it is prohibited to perform such driving maneuvers as this will worsen fuel efficiency.

However, even beginners or experienced drivers may engage in clutch driving due to habit.

<Purpose of the invention> The object of this invention is to provide a clutch riding warning device that can prevent such clutch riding.

<Summary of the invention> In this invention, a first switch is turned on when it detects that the clutch pedal is in a half-clutch state, and the clutch pedal is connected in series with the first switch to disengage the clutch. A second switch that turns off when it detects that the switch is stepped on, and a timer that starts operating when only the first switch is turned on while the second switch remains on. It is configured to issue an alarm when a time of about minutes is measured.

<Example of the invention> The figure shows an example of the invention. In the figure, 1 is the battery, 2 is the first switch, 3 is the second switch, and 4
indicates a timer, and 5 indicates an alarm.

The first switch 2 is composed of a normally open contact, and the second switch is composed of a normally closed contact. As for the specific structure of the first switch 2, for example, a tape switch that operates with a weak force may be attached to the clutch petal, or it may be built in a rubber pad that covers the clutch petal. With this configuration, when you lightly place your foot on the clutch pedal, the tape switch is turned on, and it is possible to detect that your foot is on the clutch pedal.

The second switch may be provided, for example, in association with the arm of the clutch petal, and may be configured to be turned off by rotating the arm by a predetermined amount.

The first and second switches are connected in series between the battery 1 and the alarm 4. Therefore, when the foot is applied to the clutch pedal, the first switch 2 is turned on, and the voltage necessary for operation is supplied from the battery 1 to the timer 4, and the timer 4 is activated. To disengage the clutch, the clutch pedal must be depressed to a predetermined amount. When the clutch pedal is depressed to a predetermined amount, the second switch is turned off, power supply to the timer 4 is stopped, and the timer 4 becomes inactive.
Therefore, when the clutch pedal is operated for the normal purpose, the timer 4 does not finish counting the predetermined time and its operation is interrupted.

As the timer 4, various commercially available timers can be used, but in this example, transistors Q ₁ , Q ₂ , Q ₃ , Q ₄ , Q ₅ and resistors R ₁ , R ₂ , R ₃ ,
R ₄ , R ₅ , R ₆ , R ₇ , R ₈ , R ₉ and capacitors C ₁ and C ₂
and a diode D.

Transistor Q ₂ is directly connected to the positive terminal of battery 1 through resistor R ₃ , so that when the first switch is off, transistor Q ₂
is kept on at all times. transistor Q ₂
Since the capacitor is always on, the capacitor
Both ends of C ₁ are short-circuited through a series circuit of transistor Q ₂ and resistor R ₄ , and the charging voltage is in a state of zero.

When the foot is put on the clutch petal, the first
Switch 2 is turned on, and the first switch 2 and the second
Voltage is supplied to the timer 4 through the switch 3. This voltage turns on transistor _Q1 and controls transistor _Q2 to turn off. When transistor Q ₂ is controlled off, capacitor C ₁
is supplied with charging current through the emitter base of transistor _Q3 and resistor _R5 . While the charging voltage of the capacitor _C1 is low, the transistor _Q3 is controlled to be turned on, and the transistor _Q4 is controlled to be turned on. Transistor _Q5 is thus kept off.

The charging voltage of capacitor C ₁ gradually increases, and when it reaches a predetermined voltage, transistor Q ₃ is controlled to be turned off. This causes no current to flow through resistor R ₆ and transistor Q ₄ is also turned off. When the transistor Q ₄ is controlled to be turned off, the transistor Q ₅ is turned on and the alarm 5 is operated. Note that capacitor _C2 is for preventing malfunction. In other words, for example, at the moment when the first switch 2 is turned on, the transistor _Q4 is still in the off state.
Transistor _Q5 may turn on momentarily.
To prevent this, the capacitor C ₂ prevents the transistor Q ₅ from turning on when the voltage is applied to the timer 4.

Therefore, the operating time of the timer 4 can be determined by appropriately selecting the charging time constant for the capacitor _C1 . The operating time of timer 4 can be determined as follows. In other words, it has been confirmed that when using the clutch petal for legitimate purposes, it lasts less than one minute at most. Therefore, the time measured by the timer 4 should be selected to be about 2 to 3 minutes, which is one minute or more.

By putting your foot on the clutch pedal, for example, timer 4.
If you take your foot _{off the} clutch _pedal within the measured time of
_R4 is chosen to be a small resistor value)) The timer is reset. Then, when the foot is applied to the clutch pedal again, the timer 4 starts timing operation from the initial state.

As the alarm 5 operated by the output of the timer 4, this example shows a case where a lamp indicator that transmits a visual sensation is used, but a buzzer or the like that transmits an auditory sensation may also be used.

<Effects of the invention> As explained above, according to this invention, when the clutch riding state continues for a predetermined period of time or more, for example, about 2 to 3 minutes, the timer 4 outputs a timing output and the alarm 5 is activated.
operate and issue an alarm. This warning causes the driver to realize that he/she is riding in the clutch and take his or her foot off the clutch pedal. As described above, according to this invention, since a warning is given to the driver who engages in clutch riding, clutch riding can be naturally prevented. This improves clutch plate wear and fuel efficiency, and the effects are significant in practical use.

[Brief explanation of the drawing]

The figure is a connection diagram showing an embodiment of this invention. 1...Battery, 2...1st switch, 3...
2nd switch, 4...timer, 5...alarm.

Claims (1)

[Scope of Claim for Utility Model Registration] A first switch that turns on when it detects that the foot is in contact with the clutch petal and the clutch is close to half-clutched; and a first switch that is connected in series with the first switch, and the clutch petal disengages the clutch. a second switch that turns off when it detects that the switch has been stepped on; a timer that starts operating when the first switch is turned on while the second switch is turned on; A clutch riding alarm device comprising: an alarm means that operates when a time elapse of about minutes is detected; and a clutch riding alarm device.