JPH04123958A - Electric windshield wiper - Google Patents

Abstract

PURPOSE:To get rid of such a case as giving a wiper blade a dry wipe by installing a control mechanism which feeds a wiper motor with only power for intermittent operation at a time when a windshield wiper switch is in a low-speed position or high-speed position and a vehicle has come to a stopped state. CONSTITUTION:In a control mechanism controlling a wiper motor 2, there is provided an information processing means 11 which inputsposition data by a position detecting means 10, detecting respective positions 6a, 6b, 6c of a windshield wiper switch 6 and other vehicle state data out of a vehicle state detecting means 13, and when the switch 6 is in a low-speed position 6a or the high-speed position 6b, and a vehicle is in a stopped state, a processing data signal (prohibiting signal) and an intermittent operation signal are outputted to a prohibiting means 14. Then, the prohibiting signal inputted into this prohibiting means 14 is processed and electric power out of a low-high speed operating circuit 9 is interrupted, while the intermittent operating signal is processed as well, inputting it into an intermittent operating circuit 8, and power for intermittent operation is made so as to be fed to a power terminal 2b of the wiper motor 2.

Description

[Detailed description of the invention] [Purpose of the invention]

(Industrial Application Field) This invention can be applied to, for example, the eyes! This invention relates to a wiper device used for wiping off raindrops and dust adhering to the windshield crow of the e-east with a wiper play F. (Prior Art) Conventionally, as the above-mentioned wiper device, there has been one shown in FIG. 3, for example. That is, in the wiper device 100 shown in the figure, a link joint 102 is connected to a power shaft 101a of a wiper motor 101, and this link 102 has a base of a wiper arm 103 rotatably attached to a vehicle body 50. The ends are connected. Further, a wiper blade 104 is attached to the tip of the wiper arm 103, and this wiper plate 104
is brought into pressure contact with the wiping surface 51 by a tension spring (not shown) built into the wiper arm 103. A power terminal 10 provided on the wiper motor 101
By supplying predetermined power to 1b and 101c,
The rotation of the output shaft 101a is converted into rotation of the wiper arm 103 via the ink joint 102, thereby causing the wiper blade 104 to perform a wiping operation between the re-inversion positions A and H of the wiping surface 51. The wiper device 100 also includes a wiper switch 1.
05, and this wiper switch 105 is switchably provided with an intermittent position 105a, a low speed position 105b, and a high speed position 105C. Furthermore, a drive circuit 107 is connected to the intermittent position 105a via an intermittent operation circuit 106,
The low speed position 105b. A drive circuit 107 is connected to each of the high-speed positions 105c, and a power terminal 101b of the wiper motor 101 is connected to the drive circuit 107. Therefore, the wiper switch 105 is set to the intermittent position 105.
When switching to a, the intermittent operation circuit 106 to the drive circuit 10
Since the intermittent signal is manually input to 7, power for intermittent operation is supplied from the drive circuit 107 to the loose a terminal 101b provided in the wiper motor 101, so the wiper motor 101 is rotated at a predetermined intermittent cycle. In addition, the wiper switch 105 is moved to the low speed position 105b.
Alternatively, when switching to the high speed position 105c, the drive circuit 107 sends the electric FA @ child 1 (
Since power for low-speed operation or high-speed operation is supplied to lb, the wiper motor 101 is rotated at low or high speed. As a result, the output shaft 101a of the wiper motor 101 rotates, so the wiper blade 104 is rotated to the output shaft 101a.
The wiping surface 51 was wiped at a wiping speed corresponding to the rotation of a. (Problem to be Solved by the Invention) However, in the above-mentioned conventional wiper device 1oo,
When the wiper switch 105 is switched to the low speed position 105b or the high speed position 105c and the vehicle changes from a running state to a stopped state, the wiper blade 10
4 indicates each position 105b of the wiper switch 105.
Alternatively, since the wiping surface 51 is wiped at the wiping speed of 105c, there is a problem that it becomes an eyesore for the driver.
Further, the amount of deposits such as raindrops that stick to the wiping surface 51 is smaller when the vehicle is stopped than when the vehicle is running, so that the wiper blade 104 is It is difficult to say that dry wiping will increase the load and put a strain on the wiper blade 104 and the wiper motor 101.
There is a problem that the lifespan of 01 is shortened, and it has been a challenge to solve these problems. (Objective of Invention 1) The present invention has been made in view of the conventional problems mentioned above, and provides a wiper device that can secure the driver's field of view and extend the life of the wiper blade and wiper motor. It is intended to. [Structure of the Invention] (Means for Solving the Problem) A wiper device according to the first aspect of the present invention includes a wiper motor that wipes a wiper blade against a wiping surface, an intermittent position, a low speed position, and a high speed position. wiper switch equipped with
an intermittent operation circuit that supplies power for intermittent operation to the wiper motor when the wiper switch is in the intermittent position; and an intermittent operation circuit that supplies power for low-speed operation or high-speed operation to the wiper motor when the wiper switch is in the low-speed position or the high-speed position. In a wiper device equipped with a low-speed/high-speed operating circuit, the wiper switch is in a low-speed position or a high-speed position, and when the vehicle is stopped, only power for intermittent operation is supplied to the wiper motor. In a more preferred embodiment, the control mechanism includes position detection means for detecting the position of the wiper switch and outputting a position take, and whether the vehicle is in a running state or a stopped state. vehicle state detecting means for detecting whether there is a vehicle state take and outputting a vehicle state take; information processing means for processing the position take and vehicle state data and outputting processed data;
This wiper device is characterized by a structure that includes a prohibition means for cutting off power from the high-speed operation circuit, and is a means for solving the conventional problems with the above-described structure of the wiper device. (Operation of the Invention) According to the wiper device according to the present invention, when the wiper switch is in the low speed position or the high speed position and the vehicle is in a stopped state, the control mechanism supplies power for intermittent operation to the wiper motor, In a more preferred embodiment, the information processing means processes the position data detected and outputted by the position detection means and the vehicle state data detected and outputted by the vehicle state detection means, and then outputs the information processing means. Based on the processed data, the inhibiting means cuts off the power from the low-speed φ high-speed operation circuit, so when the vehicle is stopped, the wiper blade is less likely to be an eyesore to the driver, and the wiper blade is not wiped dry. This brings about the effect of becoming something that is not. (Embodiment) A wiper device according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. That is, in the illustrated wiper device 1, one end of a link joint 3 is connected to an output shaft 2a of a wiper motor 2, and the other end of this link joint 3 has a base of a wiper arm 4 rotatably attached to a vehicle body 50. The ends are connected. Further, a wiper blade 5 is attached to the tip of the wiper arm 4, and the wiper blade 5 is moved to a wiping surface by a tension spring (not shown) built in the wiper arm 4.
It is designed to come into pressure contact with 1. and a power supply terminal f-2b provided in the wiper motor 2;
By supplying sufficient power to the output shaft 2a
The rotation of the wiper arm 4 is converted to the rotation of the wiper arm 4 via the link joint 3, thereby moving the wiper blade 5 to the wiping surface 51.
The wiping operation is performed between the reverse positions A and B. The wiper device 1 is also provided with a wiper switch 6, which has an intermittent position 6a, a low-speed position 6b, and a high-speed position 6C. Here, the wiper switch 6 includes an intermittent operation circuit 8 that supplies power for intermittent operation to the wiper motor 2 via a control mechanism 7, and a power supply for low speed operation φ and high speed operation to the wiper motor 2 via the control mechanism 7. Low-speed/high-speed operation circuit 9
A power terminal 2b of the wiper motor 2 is connected to each of these operating circuits 8 and 9. Further, the control mechanism 7 is provided with a position detection means 10 that detects the positions of each position 6a, 6b, and 6c of the wiper switch 6 and outputs it as position data. When detected, the position data is sent to the intermittent operation circuit 8.
Further, when the position detecting means 10 detects the low speed position 6a or the high speed position 6b, the position data is input to the information processing means 11. The control mechanism 7 is equipped with a vehicle speed detecting means 12 that detects the speed of the vehicle and outputs a vehicle speed take, and also detects whether the vehicle is in a stopped state or a standstill state and detects that the vehicle is in a stopped state. A vehicle state detecting means 13 is provided which outputs a vehicle state take and inputs it to the information processing means 11 when the vehicle state is detected. On the other hand, the information processing means 11 is configured to receive position data detected by the Fiij position detection means 10 and vehicle state data detected by the vehicle state detection means 13, and the position data is inputted to the low speed position 6a. Alternatively, when the vehicle status data is for the high speed position 6b and the vehicle state data is not a vehicle stopped state, each of these data is processed and inputted to the low speed/high speed operation circuit 9 as processed data (permission Mf signal). It has become. Further, when the position data is for the low speed position 6a or the high speed position 6b and the vehicle state data is for the stopped state of the vehicle, each of these data is processed and the processing data (inhibition signal) and the intermittent The activation signal is input to the inhibiting means 14. Then, the processing data (prohibition signal) input to the prohibition means 14 is processed by the prohibition means 14 to cut off the power from the low-speed/high-speed operation circuit 9, and the intermittent operation signal input to the prohibition means 14 is processed by the prohibition means 14. 14 and input to the intermittent operation circuit 8, and the intermittent operation circuit 8 supplies power for intermittent operation to the power supply terminal 2b of the wiper motor 2.Next, the flowchart shown in FIG. The operation of the wiper device 1 will be explained based on this. When the program is started, it is determined in step 20 whether or not the wiper switch 6 is in the operating position. In this step 20, the wiper switch 6 is in the operating position. When it is determined (YES), the process moves to the next step 21, and when it is determined in this step 20 that the wiper switch 6 is not in the operating position (No), the system is canceled in the next step 22, and in step 20, the process is repeated ( In step 21, which is proceeded to when it is determined in step 20 that the wiper switch 6 is in the operating position, it is determined whether the flag (F)=1. When it is determined that there is no flag (No), the process moves to the next step 23, and when it is determined that the flag (F) is -1 (YES) in this step 20, the process moves to the next step 24. Step In step 20, it is determined that the flag (F) is not 1, and in step 23, the position detecting means 10 determines whether the wiper switch 6 is in the intermittent position 6C.In this step 23, the wiper switch 6 is in the intermittent position 6C. When it is determined that the wiper switch 6 is not in the intermittent position 6c (No), the process proceeds to the next step 24, and when it is determined in this step 23 that the wiper switch 6 is in the intermittent position 6c (YES), the process proceeds to step 28, where the intermittent operation circuit 8 The wiper motor 2 is operated intermittently by supplying power for intermittent operation to the wiper motor 2.Furthermore, when it is determined in step 23 that the wiper switch 6 is not in the intermittent position 6C, the flag ( In step 24, which is proceeded to when it is determined that there is F), the vehicle speed detection means 1
2, it is determined whether the current vehicle speed is "0" or not. When it is determined in this step 24 that the current vehicle speed is "0" (YES), the process moves to the next step 25, and when it is determined that the current vehicle speed is not "10" (No) in this step 24, the process proceeds to step 30. to move to. In step 24, it is determined that the current vehicle speed is "0", and in step 25, the vehicle state detection means 13
It is determined whether or not the foot brake is being operated. If it is determined in this step 25 that the foot brake is being operated (YES), that is, that the vehicle is in a stopped state, the process moves to the next step 26, and in this step 25, the foot brake is not being operated (NO). If it is determined that this is the case, the process moves to step 29. In step 29, which is entered when it is determined in step 25 that the foot brake is not being operated, the vehicle state detecting means 13 determines whether or not the parking brake is being operated. If it is determined in this step 29 that the parking brake is operated (YES), that is, that the vehicle is in a stopped state, the process moves to step 26, and in this step 29 it is determined that the parking brake is not operated (NO). When this happens, the process moves to step 30. When it is determined that the foot brake is being operated in step 25, and when it is determined that the parking brake is being operated in step 29, the flag (F) is set to 1 in step 26, and the flag (F) is set to 1 in step 27. to move to. Further, when it is determined in step 24 that the current vehicle speed is not "o" and when it is determined in step 29 that the parking brake is not operated, the flag (F)=O is added in step 30, and the flag (F)=O is added to the step. 28. Then, in step 26, the flag (F)=1 is added, and in step 27, the information processing means 11
The processing data (prohibition signal) output from prohibition 1 is
4 to cut off the power from the low-speed/high-speed operation circuit 9, and process data output from the information processing means 11 (
The permission signal) is processed by the prohibition means 14 and the intermittent operation circuit 8
, the wiper motor 2 is operated intermittently and the process moves to step 28. In this step 28, when it is determined in step 23 that the wiper switch 6 is in the intermittent position 6c and the shift is made, power for intermittent operation is supplied from the intermittent operation circuit 8 to the power supply terminal 2b of the wiper motor 2, and the wiper motor 2 is intermittently operated. The current vehicle speed is determined to be not "0" in step 24, and the flag (F) is set to O in step 30.
When the wiper motor 2 is applied and shifted to the low speed position 6a or the high speed position 6b of the wiper switch 6, power for low speed operation or high speed operation is supplied from the low speed/high speed operation circuit 9 to the power supply terminal 2b of the wiper motor 2. This causes the wiper motor 2 to operate at low or high speed.

【Effect of the invention】

- As explained above, the wiper device according to the present invention operates when the wiper switch is in the low speed position or the high speed position and the vehicle is stopped.
The configuration includes a control mechanism that supplies only power for intermittent operation to the wiper motor 1j, and in a more preferred embodiment, the wiper switch position is detected and position data is output to the Nj control mechanism. a position detection means, a vehicle state detection means for detecting whether the vehicle is in a running state or a stopped state and outputting vehicle state data, and information for processing the position data and vehicle state data and outputting the processed data. Since the configuration includes a processing means and a prohibition means for cutting off power from the low-speed and high-speed operating circuits based on the processed data, the wiper blades are operated intermittently when the vehicle changes from a running state to a stopped state. The wiper blade becomes less obtrusive to the driver's eyes, thereby ensuring the driver's visibility, and the wiper blade is less likely to have to be wiped dry, thereby dramatically extending the life of the wiper blade and wiper motor. It has the excellent effect of being able to.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram of a wiper device according to an embodiment of the present invention, FIG. 2 is a flowchart 1 explaining the control operation of the wiper device shown in FIG. 1, and FIG. 3 is a flowchart of a conventional wiper device. It is a block diagram. DESCRIPTION OF SYMBOLS 1... Wiper device, 2... Wiper motor, 5... Wiper blade, 6... Wiper switch, 6a... Intermittent position, 6b... Low speed position, 6c... Intermittent position, 7. ... Control mechanism, 8... Intermittent operating circuit, 9... Low speed/high speed operating circuit, 0... Position detection means, 1... Information processing means, 2... Vehicle speed detection means, 3...・Vehicle condition detection means, 4. Prohibition means, 1. Wiping surface.

Claims (2)

[Claims] (1) A wiper motor that wipes the wiper blade against the wiping surface, a wiper switch that can switch between an intermittent position, a low speed position, and a high speed position, and a wiper switch that allows the wiper motor to operate intermittently when the wiper switch is in the intermittent position. A wiper device comprising an intermittent operation circuit that supplies power, and a low-speed/high-speed operation circuit that supplies power for low-speed operation or high-speed operation to a wiper motor when the wiper switch is in a low-speed position or a high-speed position. A wiper device comprising a control mechanism that supplies only power for intermittent operation to the wiper motor when a switch is in a low speed position or a high speed position and the vehicle is stopped. (2) position detection means for detecting the position of the wiper switch and outputting position data to the control mechanism;
a vehicle state detection means that detects whether the vehicle is in a running state or a stopped state and outputs vehicle state data; an information processing means that processes the position data and the vehicle state data and outputs processed data; The wiper device according to claim 1, further comprising prohibition means for cutting off power from the low-speed and high-speed operation circuits according to the processed data.