JPH09113306A - Traveling distance alarming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive traveling distance alarming device by making the parts corresponding to the reset switch of the conventional traveling distance alarming device, etc., simpler in structure. SOLUTION: When a vehicle travels a fixed distance, one of the two contacts 91 and 92 of a detection switch 9, for example, the contact 91 which is in contact with a connector 10 is switched to a continuity from an interruption and the power supply line of an alarm 13 turns on through the contact 91, the connector 10, and a printed wiring board 12. As a result, the alarm 13 is actuated. When the connector 10 is removed from the present fitting position to another fitting position, the connector 10 is connected to the other contact 92 which is in an interruption and the power supply line of the alarm 13 is interrupted. As a result, the alarm 13 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mileage warning device, and more particularly, to a mileage warning that activates an alarm every time the vehicle travels a certain distance, for example, 10,000 km, and urges the driver to carry out regular inspection of the vehicle. It relates to the device.

[0002]

2. Description of the Related Art Conventionally, a mileage warning device disclosed in Japanese Utility Model Publication No. 53-1982 is known as a mileage warning device of this type. This conventional mileage warning device
The odometer (total counter) that counts the total mileage of the vehicle is equipped with a single-pole double-throw type detection switch that works in conjunction with the circular wheel, and when the detection switch detects that the vehicle has traveled a certain distance, for example, 10,000 km. , The alarm device can be stopped only when the alarm device is operated and then the reset switch is operated.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive mileage warning device by simplifying the parts corresponding to the reset switch in the above-mentioned conventional mileage warning device. It was made.

[0004]

According to a first aspect of the present invention, an alarm device, a printed wiring board electrically connected to the alarm device, and a single-pole double-throw type detection switch are provided with two contacts. It is a plate, and the
One contact is alternately connected to the printed circuit board, and the other is selectively attached to one of two mounting positions formed between the printed circuit board and the printed wiring board. Depending on the mounting position. And a connector electrically connecting between one of the two contacts and the printed wiring board, and when traveling a certain distance, the connector among the two contacts of the detection switch is provided. One of the contacts in the connection state is switched from the cutoff state to the conduction state, the power line of the alarm device is conducted through the one contact, the connector and the printed wiring board to activate the alarm device, and , By removing the connector from the current mounting position and mounting it on the other mounting position, the connector is connected to the other contact in the cutoff state of the detection switch. Is connected to, whereby said alarm device is interrupted the power supply line adopts a traveling distance warning device being characterized in that configured to stop the operation.

According to a second aspect, the printed board is provided with the
The mileage warning device according to claim 1, wherein a ground wiring portion shared by the two contacts is formed.

According to a third aspect of the present invention, the mileage warning device according to the first or second aspect is adopted, wherein the alarm device is a lamp.

According to a fourth aspect of the present invention, the detection switch has a terminal portion that slides alternately on the two contacts in conjunction with an odometer. Adopt a distance warning device.

[0008]

According to the mileage warning device of the present invention, the alarm is activated by providing the connector and removing the connector from the current mounting position and mounting the connector at the other mounting position when the vehicle travels a certain distance. Therefore, it is possible to provide a component corresponding to the conventional reset switch with a simple structure, and it is possible to reduce the cost.

According to the mileage warning device of the second aspect, since the ground wiring portion shared by the two contacts is formed on the printed board, the ground wiring portion of the ground wiring portion is different from the case where each contact has its own dedicated ground wiring portion. The unification can reduce the size of the printed board, and accordingly, the space between the two mounting positions of the connector can be reduced and the size of the device can be reduced. Further, as the device becomes smaller, various wiring spaces on the back side of the mileage meter can be expanded.

The mileage warning device according to claim 3 corresponds to the case where a lamp is used as an alarm device.

In the mileage warning device according to the fourth aspect, since the terminal portion interlocks with the odometer and slides alternately on the two contacts of the detection switch, it is possible to downsize the device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are respectively a front view and a rear view of a odometer incorporating a mileage warning device according to one embodiment.

1 and 2, 1 is an odometer (total counter), 2 is a trip meter, 3 is
A pointer shaft into which a pointer (not shown) of a speedometer is press-fitted, 4 is a printed board to which a vehicle speed signal is input, 5 is a stepping motor that rotates according to the vehicle speed signal input to the printed board 4, and 6 is The zero return switch 7 of the trip meter 2 is a connector 10 (FIG. 4, FIG.
Reference numeral 8 denotes a housing to which 5) is attached, and 8 denotes a printed board according to the present invention.

On the printed board 8, as shown schematically in FIG. 6, two contacts 91 of a single-pole double-throw type detection switch 9 are provided.
92 are formed so as to be separated from each other in the circumferential direction. Further, the terminal portion 93 of the detection switch 9 is arranged at the two contacts 91, 92 of the detection switch 9 so as to be slidable on the two contacts 91, 92. The terminal portion 93 is rotatable in association with the odometer 1, and is, for example, 10,000 k.
One rotation is performed every m, during one half rotation during one rotation, one of the two contacts 91, 92 is in contact with, for example, 91, and during the other half rotation, the other contact 92. It is configured to be in contact with. The terminal portion 93 is electrically connected to a ground wiring portion 94 connected to the ground (GND), and the ground wiring portion 94 includes two branch portions 94a,
It has 94b.

Connector 1 mounted in housing 7
0 is a sectional view in FIG. 4 and a schematic diagram in FIG.
The connector housing 101 is made of synthetic resin, and two terminals 102, 103 made of metal are fixed to each other in an electrically insulated state. The terminal 102 has a base 10
Two elastic legs 10 branched from 2c in opposite directions
It has 2a and 102b. The terminal 103 has the same configuration as the terminal 102. Also,
The connector housing 101 is formed with a recess 101a that can partially accommodate the printed board 8.
One elastic leg portion 102b of the terminal 102 and one elastic leg portion (not shown) of the terminal 103 partially protrude from a and can contact the printed board 8.

As shown in FIGS. 3 (A) and 3 (B), the housing 7 has a lower accommodating recess 7a for allowing the connector 10 to be attached to a lower position and an upper side for allowing the connector 10 to be attached to an upper position. The accommodation recesses 7b are formed respectively.

FIG. 5 shows a sectional view of the connector 10 attached to the housing 7. As shown in FIG. 5, one elastic leg portion 102a of the terminal 102 of the connector 10 is in elastic contact with the printed wiring board 12 arranged so as to extend from the meter case 11 side to the inner side surface of the housing 7. Held in. Terminal 10
As for terminal 3, printed wiring board 1 is the same as terminal 102.
It is in contact with 2. Here, the printed wiring board 12 is
As shown in FIG. 6, an alarm device, for example, a wiring portion 121 electrically connected to the lamp 13 (FIG. 6) and a ground (GND).
And a wiring portion 122 connected to. Further, the wiring part 121 has two branch parts 121a and 121b,
The wiring part 122 has two branch parts 122a and 122b.

The other elastic leg portion 102b of the terminal 102 is held in elastic contact with the printed board 8 housed in the recess 101a of the connector 10. Similarly to the terminal 102, the terminal 103 is also in contact with the printed board 8. The connector housing 101 is provided with a locking protrusion 101b,
The locking projection 101b is engaged with the locking hole 7c of the housing 7 to prevent the connector 10 from dropping out of the housing 7, and the engagement state of the locking projection 101b and the locking hole 7c is released. The connector 10 can be detached from the housing 7.

Next, the respective electrical connection states when the connector 10 is attached to the lower accommodation recess 7a of the housing 7 and when it is attached to the upper accommodation recess 7b will be described.

First, when the connector 10 is attached to the lower housing recess 7a as shown by the solid line in FIG. 6, the wiring portion 121b of the printed wiring board 12 and the contact 92 of the printed board 8 are connected to the terminal 102 of the connector 10. And the wiring portion 122b of the printed wiring board 12 and the wiring portion 94b of the printed board 8 are electrically connected via the terminal 103 of the connector 10.

Therefore, at the time of mounting this connector,
Assuming that the terminal portion 93 is in contact with one contact 91 as shown by the solid line in FIG.
The power line to D) can be represented as shown in FIG. 7A, and the lamp 13 is in the off state because the power line is cut off.

Thereafter, as the odometer 1 rotates due to the increase in the traveling distance, the terminal portion 93 does not come into contact with the one contact 91 and the other contact 92 as shown by the alternate long and short dash line in FIGS. 6 and 7A. When they come into contact with each other, the power supply line becomes conductive and the lamp 13 lights up. The lighting of the lamp 13 enables the driver to recognize that it is time to periodically inspect the vehicle.

When the vehicle is subjected to regular inspection, a vehicle mechanic or the like removes the connector 10 from the lower housing recess 7a of the housing 7, and the connector 10 is housed in the upper housing as shown by a chain line in FIG. The work of attaching to the recess 7b is performed. When the connector 10 is attached to the upper housing recess 7b, the wiring portion 121a of the printed wiring board 12 and the contact 91 of the printed board 8 are electrically connected via the terminal 103 of the connector 10 and the printed wiring board 12 is also connected. Wiring part 122a and the wiring part 9 of the printed board 8
4a is electrically connected via the terminal 102 of the connector 10.

Therefore, by changing the mounting position of the connector 10 as described above, the power supply line can be represented as shown in FIG. 7B, the power supply line is shut off, and the lamp 13 is turned off. After that, odometer 1 due to the increase of mileage
When the terminal portion 93 comes into contact with the one contact 91 again as shown by the alternate long and short dash line in FIG. 7 (B) with the rotation of, the lamp 13 is turned on by the continuity of the power supply line, and the driver performs a regular inspection. You can recognize the arrival of the time.

As described above, according to the mileage warning device of this embodiment, the connector 10 is provided, and when the vehicle travels a certain distance, the connector 10 is detached from the current mounting position and mounted at the other mounting position. Since the operation of the alarm device 13 is released by this, it is possible to provide a component corresponding to the conventional reset switch with a simple structure, and it is possible to reduce the cost. In addition, the terminal portion 93 is interlocked with the odometer 1 and is connected to the switch 2 of the detection switch 9.
Since the two contact points 91 and 92 slide alternately, it is possible to downsize the device.

The power line of the alarm device 13 is not limited to that shown in FIGS. 6 and 7 as long as the power line can be shut off by changing the mounting position of the connector 10.

FIG. 8 shows a modification of the power supply line. This power supply line has two contacts 9 on the printed board 8.
It is characterized in that the ground wiring portion 94 shared by the first and the second terminals 92 and 92 is formed, and the two contact points 91 and 92 shown in FIG.
The printed wiring board 8 can be downsized by unifying the ground wiring portions 94 as compared with the case where the respective dedicated ground wiring portions 94a and 94b are provided.
The space between the two mounting positions 7a and 7b of 0 can be reduced, and the device can be downsized. Further, as the device becomes smaller, various wiring spaces on the back side of the mileage meter can be expanded.

[Brief description of the drawings]

FIG. 1 is a front view of a odometer incorporating a mileage warning device according to an embodiment.

FIG. 2 is a rear view of the odometer.

FIG. 3 is a view showing a selective mounting state of connectors.

FIG. 4 is a sectional view of the connector.

FIG. 5 is a sectional view showing how the connector is attached.

FIG. 6 is a schematic diagram of the power line of the alarm device.

FIG. 7 is a circuit diagram of the power supply line.

FIG. 8 is a schematic diagram of a modified example of a power supply line.

[Explanation of symbols]

 1 Odometer 7a, 7b Housing recess (mounting position) 8 Printed board 9 Detection switch 91, 92 contacts 93 Terminal section 94 Ground wiring section 10 Connector 12 Printed wiring board 13 Lamp (alarm)

Claims (4)

[Claims] 1. An alarm device, a printed wiring board electrically connected to the alarm device, and a printed board having two contacts of a single-pole double-throw type detection switch, which travels a predetermined distance. Each time, the two contact points are alternately turned on and off, and the printed board is selectively attached to either one of two attachment positions formed between the printed board and the printed wiring board. According to the mounting position, a connector for electrically connecting either one of the two contacts and the printed wiring board is provided, and when traveling a certain distance, the two contacts of the detection switch. Among them, one of the contacts connected to the connector is switched from the disconnected state to the conductive state, and the power line of the alarm device is connected via the one contact, the connector and the printed wiring board. Through the alarm is activated, the then
By removing the connector from the current mounting position and mounting it at the other mounting position, the connector is connected to the other contact in the cutoff state of the detection switch, whereby the power supply line is cut off and the alarm device is activated. A mileage warning device characterized by being configured to stop operation. 2. The mileage warning device according to claim 1, wherein a ground wiring portion shared by the two contacts is formed on the printed board. 3. The mileage warning device according to claim 1, wherein the alarm device is a lamp. 4. The mileage warning device according to claim 1, wherein the detection switch has a terminal portion that slides alternately on the two contacts in conjunction with an odometer. .