JPS61212620A - Lubricating-oil replacing timing warning apparatus - Google Patents

Abstract

PURPOSE:To permit the simple reset in oil exchange and prevent the erroneous operation in other states by installing a reset switch onto the engine-side mounting and demounting part of a member which needs the mounting and demounting operation in oil exchange. CONSTITUTION:In oil exchange, an oil filler cap 11 and a packing 13 are demounted from the locker cover 12 of an engine. The lever 18A of a microswitch 18 is operated through a pushing down pin 15B and the engagement edge part 15C of a pushing-down pin 15 by pushing-in a small diameter rod corresponding to the diameter of a pin hole 14 into the hole 14, and a calculation part 5 is put into reset state. The work is completed by removing the small-diameter rod. Since the pin hole 14 is in shielded state because of the fitting of the oil filler cap 11 except in oil exchange, reset operation is not carried-out erroneously, even in inspection and repair work.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a lubricating oil change time warning device, and particularly to a lubricating oil change time warning device, which notifies the time to change the engine oil of an internal combustion engine installed in a vehicle or the like or the mission oil of a transmission according to the driving history. The present invention relates to a lubricating oil change time warning device.

[Prior Art] A conventional lubricating oil change time warning device of this type was constructed in U.S. Pat.
It is disclosed by the publication no. Here, 1 is a sensor that detects the rotational speed of the engine, and 2 and 3 are sensors that respectively detect the engine oil temperature and the engine cooling water temperature, which have an influence on the deterioration of the engine oil.

The rotation speed detected by the engine rotation speed detection sensor 1 is counted by the counter 4, and the counted value N is sent to the calculation section 5 as an output signal, while the respective rotation speeds from the oil temperature detection sensor 2 and water temperature detection sensor 3 are The detection signals are sent to converters B and 7, respectively.

The converter 8 stores a deterioration coefficient CI corresponding to the oil temperature, and the converter 7 stores a deterioration coefficient C2 corresponding to the water temperature. Deterioration coefficients C1 and 02 corresponding to the oil temperature and water temperature based on the detection signals from 3 and 3 are sent out as output signals.

Therefore, in the calculation unit 5, the product NX Ct The integration section 8 integrates NX Ct When the limit is exceeded, a replacement warning signal is sent to the notification unit 10 to generate an alarm, and the user can be notified.

However, in such conventional lubricating oil change time warning devices, the problem is how to reset them, and the reset device is not clear.
Therefore, it is possible to use the commonly used manual push-button type, but with such a push-button type, there is a possibility that the button will be reset by accidentally touching it during vehicle maintenance or other occasions. If you press down with curiosity,
The calculation will start anew from that point, so
The history up to that point will be erased, and the time for replacement will be significantly delayed, potentially causing serious damage to the engine.

Also, if you create a reset mechanism that cannot be easily manipulated, you can prevent the above-mentioned mistakes, but it may take a long time to get a reset mechanism, as it may not be possible to reset it easily when changing the oil. There is a risk that the warning timing may be delayed if the vehicle is driven.

[Objective] In view of the above-mentioned problems, the object of the present invention is to provide a lubricating oil that can be reset extremely easily at the time of oil change, and that can prevent reset malfunctions in other conditions. An object of the present invention is to provide a replacement time warning device.

[Structure of the Invention] In order to achieve the above object, the present invention provides a reset switch at the attachment/detachment part on the engine side of the oil filler cap or drain plug, which must be attached and detached when changing the oil, so that the reset switch is installed at the attachment/detachment part on the engine side. After that, it is impossible to operate the reset switch until the next attachment/detachment operation.

[Examples] Examples of the present invention will be described below in detail and specifically based on the drawings.

@lrgJ shows one embodiment of the present invention, and this example is an example in which a reset switch is disposed at a position related to the oil filler cap. Here, 11 is an oil filler cap provided on, for example, a rocker cover 12 of the engine, and 13 is its backing. Therefore, in this example, a stepped bottle hole 14 is provided at a position related to the backing joint surface 12A of the rocker cover 12, and the flanged portion 14 is provided in the bottle hole 14.
Insert the push pin 15 having a diameter of 5A from the inside and tighten the spring 1.
The flange 15A of the push pin 15 is moved to the stepped portion 1 by the spring force of 8.
Try to bias it towards 4A. 17 is rocker cover 12
This is a presser plate attached to the inside of the cover 12. This presser plate 17 holds the pusher bottle 15 vertically freely, and a microswitch 18 that functions as a reset switch is attached to the cover 12.
It is fixed to

Further, here, the press pin 15B that is pressed down when the push pin 15 is reset is held in the pin hole 14 so as not to protrude from the surface of the rocker cover 12, and the push pin 15 is held in the pin hole 14 so as not to protrude from the surface of the rocker cover 12. The end portion 15G is brought into engagement with the drive lever 18A of the microswitch 18.

18 is a rubber backing provided around the cover penetration part of the connection cord 2G attached to the switch 18, and 21 is a connector, through which the microswitch 18 and the calculation unit 5 are electrically connected.

A reset signal for starting calculation can be supplied to the calculation unit 5.

In the reset mechanism of the lubricating oil change time warning device configured as described above, the push-down bottle 15B, which is the operation part, is not exposed to the cover surface even when the oil filler cap 11 is removed, and especially when not changing the oil. Even during inspection or repair, the bottle hole 14 is covered by the attachment of the cap 11, so that a reset operation will not be performed even if it is by mistake.

In this way, a state in which the oil filler cap 11 can be reset is obtained only when the oil filler cap 11 is removed at the time of oil change, and furthermore, by pushing a small diameter rod corresponding to the diameter of the bottle hole 14 into the hole 14 in such a state. Lever 18 of microswitch 18 via engagement end 15G of pin
By operating A, the arithmetic unit 5 can be reset, and the work is completed by removing the rod.

In addition, regarding operations such as clearing the calculation unit 5 in the reset state and starting calculation, the calculation result is sent to the integration unit 8 and integrated until the oil change time, etc.
Since this is the same as the explanation for i1, the explanation thereof will be omitted.

FIG. 2 shows another embodiment of the present invention, in which the reset switch is disposed at a position related to the drain plug of the oil pan. When the drain plug 22 is fastened to the plug member 24 provided in the oil pan 23 in this way, the screw tip 22A of the plug 22 pushes up the lever 18A of the microswitch 18, and the microswitch 18 Prevent the reset signal from being output.

Thus, when you remove the drain plug 22 to change the oil, the micro switch! The lever 18A is returned downward in the figure by the spring force of a spring (not shown) provided at the microswitch 18, and the microswitch 18 is turned on, so that a reset signal can be sent to the calculation section 5.

[Effects] As explained above, according to the present invention, a reset switch that sends a reset signal to a calculation unit for calculating the operating history of the engine is removably attached to the engine side and is required at the time of oil change. The reset switch is provided in connection with the engine-side attachment/detachment section for parts that are attached and detached without any problems, and the reset switch cannot be energized and a reset signal sent unless at least the above-mentioned member is removed. During the process, the reset switch was activated due to a malfunction, and the history up to that point was erased.

This prevents serious damage to the engine from occurring due to no warning even when it is actually time to change the oil, and allows easy resetting when necessary. It is possible to provide a highly reliable lubricating oil change time warning device that can give a warning of oil change time as accurately as possible.

[Brief explanation of drawings]

1rM is a sectional view showing an example of the case where the lubricating oil change time warning device of the present invention is applied to an oil filler cap. FIG. 2 is a sectional view showing an example of the case where the present invention is applied to a drain plug of an oil pan. FIG. 3 is a block diagram showing an example of the configuration of a conventional lubricating oil change time warning device. l...Rotational speed detection sensor, 2...Oil temperature sensor, 3...Water temperature sensor. 4...Counter, 5...Arithmetic section, 8,? -... Conversion section. , 8... Integration section. 8... Comparison part, 10... Notification part, 11... Oil filler cap, 12... Rocker cover, 12A -... Joint surface. 13... Backing. 14... Pin hole, 14A... Stepped part, 15... Push pin, 15A... Flange part, 15B... Push pin. 15G...Engaging end portion, 1B...Spring, 17 thread presser plate, 18...Micro switch, 18A...Drive lever, 18...Backing, 20...Connection cord, 21...・Connector, 22...Drain plug. 22A... Screw tip, 23... Oil pan, 24... Plug member.

Claims (1)

[Scope of Claims] 1) It has a calculation means for integrating the operation history of the engine, and determines when to change the lubricating oil based on the operation history accumulated after the calculation means is reset by a reset means. A lubricating oil change time warning device configured to issue a warning, characterized in that the resetting means is provided in association with an attachment/detachment portion on the engine side of a member that requires attachment/detachment when changing the lubricating oil. Oil change time warning device. 2) In the lubricating oil change time warning device according to claim 1, the resetting means is reset by a removal operation of a member that needs to be attached and detached when changing the lubricating oil. Oil change time warning device. 3) In the lubricating oil change time warning device according to claim 1, the resetting means is configured to prohibit resetting when a member that needs to be attached or detached at the time of lubricating oil change is not removed. A lubricating oil change time warning device characterized by: