JPH085083Y2 - Rear wiper control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vehicle wiper control device, and more particularly to a rear wiper control device for timer-controlling the operation of a rear wiper in association with a reverse operation.

[Conventional technology and its problems]

When the vehicle is moved backward for parking, stopping, etc. during rainfall, after putting the gear in the back, the body is set in the backward posture and the vehicle starts to move while checking the rear from the rear window. At this time, if the backward visibility is deteriorated due to the water droplets attached to the rear window, the rear wiper is returned to its original position to operate and the rear switch is turned on to
After performing the wiping operation twice, the vehicle is in the retracted posture again and started.

As described above, a rear wiper control device in which the operation of the rear wiper is interlocked with the reverse operation is proposed as an improvement of the operation of the rear wiper after entering the backward posture. The wiper control device is configured to automatically operate the rear wiper by detecting that the gear is put in the back, on condition that the front wiper is operated.

However, this type of wiper control device operates in such a manner that the rear wiper is activated each time the gear is put in reverse in a driving operation in which a gear change for forward or backward movement is frequently performed such as garage entry or width adjustment. Even though the rear view could be sufficiently confirmed with, the wiping operation might be further performed. As described above, when the rear window is not required to be wiped, there is a problem that when the rear wiper operates, the rear field of view is obstructed by the moving rear wiper.

An object of the present invention is to provide a rear wiper control device that prohibits the operation of the rear wiper that obstructs the rearward view field with respect to a reverse operation that is repeated within a fixed time.

[Means for solving the problem]

To achieve the above object, the present invention provides a rear wiper control device for a vehicle including a front wiper and a rear wiper, a means for operating the rear wiper when a front wiper switch is selected and a reverse operation is performed, and the rear wiper. The timer means for prohibiting the operation of the rear wiper with respect to the reverse operation performed again within a fixed time after the reverse operation which started the operation.

[Action]

The reverse operation activates the rear wiper, and at the same time, the timer operation is started to perform the set number of wiping operations. When the reverse operation is performed again during the timer operation after the completion of the wiping, the operation of the rear wiper is prohibited. Then, the next operation of the rear wiper is performed by the reverse operation after the above timer operation is completed. As described above, the interlocking between the rear wiper and the reverse operation is not performed in a cycle shorter than the timer time, but is performed in a cycle longer than the timer time.

〔Example〕

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

 FIG. 1 is a block diagram of a rear wiper control device.

The rear wiper control device is a front wiper switch 10 that operates the front wiper when it is ON, a rear wiper switch 20 that operates the rear wiper when it is ON, and a reverse closing detection that detects that the shift lever or gear has been pushed to the reverse operation. The device 30, the control unit 40 that outputs a rear wiper control signal on condition of input of the drive signal and the reverse closing signal of each wiper, and the rear wiper motor 50 of the rear wiper mechanism (not shown) are rotationally controlled according to the rear wiper control signal. And a rear wiper drive device 60. The control unit 40 is composed of an electric circuit and a CPU circuit.

Next, the operation of the control unit will be described with reference to the control flowchart shown in FIG. The control unit 40 is a CPU
It consists of.

When the ignition switch enters the ACC position, the operation of the control unit starts, and first the operation of the front wiper arranged on the wiper operation panel is checked. (Step 100). If the front wiper switch 10 is turned on and the front wiper is operating, it is determined whether or not it is in the reverse state (step 101). When the reverse wiper is inserted, the operation of the rear wiper is checked (step 102). If the rear wiper switch 20 is turned on, a control signal for operating the rear wiper is output (step 103).

Here, steps 100 to 103 constitute means for activating the rear wiper when the front wiper switch is selected and the reverse operation is performed.

If NO is determined in each of the above steps 100 to 102, the process ends in that step and the rear wiper is not operated.

The control unit then starts the timer operation (step 104). That is, in step 104, the position of the front wiper switch 10 is set to high speed (High), low speed (Lo
w) and the interval (INT) mode, and calculates the timer time that determines the speed of the rear wiper and the operation interval of the rear wiper at that speed according to the set front wiper mode. Set the time and start. When the timer operation is started, the timer time is judged (step 105), and the rear wiper does not operate even if the reverse operation is repeatedly performed within this timer time.

Here, steps 104 and 105 constitute timer means for prohibiting the operation of the rear wiper in response to another reverse operation performed at a certain time after the reverse operation in which the rear wiper has started its operation.

Further, the operation of steps 104 and 105 will be described with reference to the time chart of the back operation under a certain condition shown in FIG.

When the timer time t is set according to the operation mode of the front wiper, the reverse wiper enters the reverse gear and is in the back possible state, and operates for the predetermined time tw within the set timer time. Even if two gear changes (in the figure) are performed within this timer time, the rear wiper does not operate in the reverse operation later, that is, the rear wiper operates once within the set timer time. ing. In other words, the rear wiper does not interlock with the reverse operation performed again within a fixed timer time from the reverse operation that started the operation.

The timer time t is the operating mode of the front wiper (INT,
Depending on Lo, Hi), it is set as INT>Lo> Hi.

The operation time tw of the rear wiper is set to a preset number of times, for example, a time required for the wiping operation of one to several times.

With this configuration, even if the forward movement and the backward movement are repeated frequently, the rear wiper does not operate at each gear change.

In the present embodiment, the selection of the rear wiper switch is judged after the reverse operation (step 102), but this step 102 can be omitted. That is, in the reverse operation, it is possible to detect that the shift lever or the gear is put into the back and immediately to automatically control the operation of the rear wiper based on this signal.

Further, in the present embodiment, the operation of the rear wiper is conditioned on the operation of the front wiper, but the operation is not limited to this. For example. A switch for stopping the interlocking with the front wiper may be provided on the operation panel, and the rear wiper may be interlocked with the front wiper only when the switch is selected. The control flow in this case is as shown in FIG.
The rear wiper may be configured to be operated only when the interlock switch 4 is selected by inserting the interlock switch selection step 201 after the ON step 200.

Further, the operation of the rear wiper can be controlled by detecting raindrops. As a control flow in this case, step 102 in FIG. 2 is configured to determine raindrops instead of determining whether the rear wiper switch is selected.

Although the rear wiper control device of the present invention has been described as a configuration for interlocking or canceling the interlocking of the rear wiper and the front wiper, the above device may also be configured to operate the rear wiper independently by selecting the rear wiper switch. Naturally added.

[Effect of device]

As described above, according to the present invention, since the rear wiper is operated at regular time intervals during the reverse operation, the rear wiper may be activated each time the reverse is inserted, when the gear is frequently changed such as garage entry or width adjustment. It becomes easy to check the rear view.

[Brief description of drawings]

FIG. 1 is a block diagram of a rear wiper control device of the present invention,
FIG. 2 is a control flow chart showing an example of the operation of the control unit, FIG. 3 is a time chart showing one mode of the reverse operation, and FIG. 4 is a control flow chart showing another embodiment.

Front page continued (72) Inventor Noboru Minakami Noda No. 1 Toyoda, Oguchi-machi, Niwa-gun, Aichi Prefecture Tokai Rika Denki Seisakusho Co., Ltd. (56) References Kaihei 2-21077 (JP, U) -170358 (JP, U) Actually opened Sho 63-182961 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A rear wiper control device for a vehicle comprising a front wiper and a rear wiper, means for activating a rear wiper when a front wiper switch is selected and a reverse operation is being performed, and a reverse operation in which the rear wiper has started to operate. A rear wiper control device, comprising: timer means for inhibiting the operation of the rear wiper in response to another reverse operation performed within a certain time from the operation.