JPH044293Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The invention detects, for example, when it is time to inspect exhaust gas countermeasure parts in automobiles, when it is time to rotate tires, or when it is time to replace engine oil. This invention relates to a maintenance/inspection timing notification device that notifies a driver etc. of the timing.

[Background of the idea]

2. Description of the Related Art Examples of conventional maintenance/inspection timing notification devices for automobiles of this type include those shown in FIGS. 7 and 8, for example. This is a mileage warning system that is used, for example, in the United States to inspect oxygen sensors for exhaust gas control every 30,000 miles.

In Fig. 8, 1 is an in-vehicle battery, 2 is an ignition switch, 3 is a mileage detection switch,
4 is a self-holding relay with a mechanical locking mechanism, and 5 is a warning lamp. The above mileage detection switch 3
The mechanism consists of a parallel circuit of a 30,000 mile detection switch 301, a 60,000 mile detection switch 302, and a 90,000 mile detection switch 303.More specifically, this mileage detection switch 3 is connected to a seventh
As shown in the figure, there is a movable contact plate 304 attached to a character wheel 61 that is incorporated in the odometer 6 built into the speedometer and displays 10,000 to 90,000 miles, and a movable contact plate 304 that is attached to a character wheel 61 that displays 10,000 to 90,000 miles. 30,000 miles, 60,000 miles, and 90,000 miles detection switches 301 are disposed between the character wheel 62 indicating ~900,000 miles and cooperate with the movable contact plate 304.
Fixed contact pattern 3 configuring 302 and 303
06 and a printed circuit board 305. As a result, the movable contact plate 304 rotates and slides on the fixed contact pattern 306 as the 10,000 to 90,000 mile display character wheel 61 rotates.
The mileage is between 29,999.9 miles and 30,000 miles,
The structure is such that each detection switch 301, 302, and 303 is sequentially closed each time the carry goes from 59,999.9 miles to 60,000 miles and from 89,999.9 miles to 90,000 miles, and the input/output terminals 307, 308 are short-circuited each time.

Next, the structure of the self-holding type relay 4 will be explained. This self-holding type relay 4 consists of an electromagnetic coil 401 and an iron core 402 connected between the output terminal 308 of the detection switch 3 and the alarm lamp 5. A solenoid 401 , a swinging arm 406 having an iron piece 405 attached to one end attached to the support member 404 fixed to the electromagnetic solenoid 401 , and one end of the swinging arm 406 extending from the electromagnetic solenoid 401 . It has a spring 407 that urges the swing arm 406 in the direction of separation, a movable contact 408 attached to the other end of the swing arm 406, and a fixed contact 409 provided opposite to the movable contact 408. The movable contact 408 is connected to the battery 1 via the ignition switch 2, and the fixed contact 409 is connected to the output end 308 of the detection switch 3.
For example, the above-mentioned self-holding relay 4 continues to notify the user for a while after reaching the specified mileage.

Note that 410 is an engaging member fixed to one end side of the swing arm 406, and 411 is a locking portion 412 that is fixed to the support member 404 and engages with the engaging member 410.
When the iron piece 405 is attracted to the electromagnetic solenoid 401, the engaging member 410 engages with the locking part 412, and thereby the relay contact 40
8,409 is mechanically locked in the on state.
This lock can be released by inserting the rod-shaped tool 10 through a hole 414 provided in the case 413.
This is to prevent memory loss when the ignition switch 2 is once opened and then closed again.

However, in such a conventional maintenance/inspection timing notification device, the fixed contact pattern 306 provided on the printed circuit board 305 indicates when the mileage of the vehicle body reaches 30,000 miles, 60,000 miles, or 90,000 miles. Since the vehicle is structured to switch only when the distance traveled is reached, a self-holding relay 4 is provided so that the notification continues for a while after the mileage has been reached. Therefore, there is a problem in that the use of this self-holding relay 4 increases the product cost of this notification device.

[Purpose of invention]

The present invention was developed by focusing on these conventional problems, and includes a printed circuit board and contact structure equipped with a circuit that can continue reporting for a desired period.
It is an object of the present invention to provide a maintenance/inspection timing notification device that can omit a conventional self-holding relay.

[Example of idea]

The present invention will be explained in detail below based on the embodiment shown in FIGS. 1 to 6. The same parts between the structure in this embodiment and the structure shown in the conventional example are designated by the reference numerals cited in the conventional example. The explanation of the same structural parts will be omitted.

The electrical notification circuit of the device in this embodiment is the second
As shown in the figure, a battery 1, an ignition switch 2, a detection switch 7, a release switch 9, and an alarm lamp 5 are connected in series in this order. First, to explain the configuration of the detection switch 7, a movable contact plate 701 for grounding is provided on the side of the letter wheel 61 that displays 100,000 miles to 900,000 miles, and a letter wheel 61 that indicates 100,000 miles to 900,000 miles is provided. A movable contact plate 702 having contacts A, B, and C is provided on the side surface of the wheel 62, and furthermore, a movable contact plate 702 having contacts A, B, and C is provided on the front and back sides of a printed circuit board 71 interposed between the character wheels 61 and 62. Alarm distance detection pattern 7 in which movable contact plates 701 and 702 are in sliding contact
2, 73, 74, a check pattern 75, and a ground pattern 76. Note that pattern 72 is for detecting 90,000 miles, pattern 74 is for detecting 60,000 miles, and pattern 73 is for detecting 30,000 miles. That is, the switch circuit 70 of the detection switch 7
6,707,708 is composed of the above-mentioned warning distance detection patterns 72, 73, 74, 75, 76 and movable contact plates 701 and 702.
The switch circuit 706 closes when the mileage reaches 60,000 miles, the switch circuit 707 closes when the mileage reaches 60,000 miles, and the switch circuit 70 closes when the mileage reaches 90,000 miles.
8 is closed.

Next, the release switch 9 will be explained. This release switch 9 consists of three connectors 906, 907, and 908 for switching, and the connector 906 is connected to the above-mentioned switch circuit 7.
06, connector 907 is connected to switch circuit 707, and connector 908 is connected to switch circuit 708.

Next, to explain its operation, when the mileage of the car reaches 30,000 miles, the above-mentioned switch circuit 706 is closed and the warning lamp 5 lights up to notify you. This alarm is broadcast without being interrupted. Therefore, maintenance and inspection of this car are carried out, and when the maintenance and inspection are completed, if a service person or the like separates the connector 906, the warning lamp 5 will go out and the vehicle can be driven without warning until the next 60,000 miles are reached. . When the mileage reaches 60,000 miles, the switch circuit 707 closes and the warning lamp lights up to notify you, so the light is turned off for inspection in the same manner as above. 9
The same thing happens when you reach 10,000 miles.

Therefore, according to this embodiment, the self-holding relay can be omitted, which has the effect of increasing the economical efficiency of the device. In the embodiment shown in FIG. 6, the switching part slit of the alarm point pattern 24 is formed into a crank shape so that at least one of the contacts A and B that contacts this pattern 74 is always in contact with the pattern 74. By doing so, it is possible to prevent instantaneous interruptions when switching patterns, and it is possible to perform stable switching.

[Summary of the idea]

As described above, the present invention includes a plurality of character wheels 61 and 62 that are rotatably supported on a shaft and are sequentially carried up and rotated as the inspected part operates, and any two adjacent character wheels of the character wheels 61 and 62. a printed circuit board 71 which is interposed between the character wheels 61 and 62 and has conductive patterns 72 to 76 adhered to both sides, and the two adjacent characters so as to be in sliding contact with the conductive patterns 72 to 76 of the printed circuit board; a detection switch 7 comprising movable contact plates 701, 702 provided on wheels 61, 62, respectively, and equipped with switch circuits 706, 707, 708 that close in response to a plurality of integrated values of the character wheels; circuits 706, 707,
Connectors 90 each connected in series to 708
A release switch 9 consisting of 6,907,908;
This is a maintenance/inspection timing notification device comprising an alarm 5 connected in series with the detection switch 7 and the release switch 9.

[Effect of idea]

Therefore, according to this device, it is possible to continue the alarm without using a self-holding relay, which has the effect of reducing costs due to the omission of the self-holding relay. Furthermore, according to this device, the alarm continues to be issued until maintenance and inspection are carried out, so not only can it effectively and reliably notify the timing of maintenance and inspection, but also the detection switch 7 of the present invention has two number of character wheels 61, 62
Conductive patterns 72 to 76 are interposed between and on both sides.
The movable contact plates 701 and 702 provided on the two adjacent character wheels 61 and 62, respectively, are installed so as to be in sliding contact with the printed circuit board 71 on which is attached and the conductive patterns 72 to 76 of the printed circuit board. The detection switch 7 can be installed in a small space by simply adding it to a totalizer such as an odometer, and a compact maintenance/inspection timing notification device can be obtained. Since a plurality of detection values can be arbitrarily set depending on the shapes of 72 to 76, it is possible to obtain a detailed notification function.

[Brief explanation of the drawing]

Fig. 1 is a partially exploded perspective view showing an embodiment of the maintenance/inspection timing notification device according to the present invention, Fig. 2 is its electric circuit diagram, Fig. 3 is a side view of the character wheel, and Figs. 4 and 5. 6 is an enlarged view of the X part in FIG. 5, FIG. 7 is a perspective view of the conventional example, and FIG. 8 is an explanatory diagram of its electric circuit. 7...detection switch, 71...printed circuit board,
72, 73, 74, 75, 76...pattern, 7
01,702...Movable contact plate, 706,707,
708...Switch circuit, 9...Release switch,
906, 907, 908... Connector.

Claims (1)

[Scope of utility model registration request] A plurality of character wheels 6 that are rotatably supported on a shaft and that are sequentially carried and rotated as the inspected part operates.
1, 62, a printed circuit board 71 interposed between any two adjacent character wheels 61, 62 of the character wheel and having conductive patterns 72 to 76 adhered to both surfaces, and the conductive patterns 72 to 76 of the printed circuit board. The two adjacent character wheels 61, 6 are in sliding contact with each other.
2. Movable contact plates provided respectively. 701,7
02, and switch circuits 706 and 70 that close in response to the plurality of integrated values of the character wheels, respectively.
7, 708, a release switch 9 consisting of connectors 906, 907, 908 connected in series to the switch circuits 706, 707, 708, respectively; A maintenance/inspection timing notification device comprising: an alarm 5 connected to an alarm 5;