JPH04127060U - wiper device - Google Patents

Abstract

(57) [Summary] [Purpose] To detect the state of the vehicle and perform accurate wiping without wiping the wiper blade wastefully when the vehicle is in a running state or a stopped state. [Configuration] Wiper motor 4 that operates the wiper blade
and a wiper switch 2 that switches between high speed mode, low speed mode, intermittent mode, and stop mode, and a vehicle speed sensor 5 that detects whether the vehicle speed is higher or lower than a predetermined value and switches between running mode and stopped mode. In addition, depending on the mode of the wiper switch 2 and the vehicle speed sensor 5
supplying power to continuously operate the wiper motor 4 according to the mode of the wiper switch 2 and the vehicle speed sensor; supplying power to operate the wiper motor 4 intermittently with a pause time set for each mode;
It is equipped with a control mechanism 3 that shuts off the power supply.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

For example, this idea wipes away rain and snow that adheres to a car's windshield glass. A wiper device used to secure visibility by wiping with a wiper blade. In particular, it concerns a wiper device that wipes the wiper blade intermittently. be.

0002

[Conventional technology]

7 and 8 illustrate this type of wiper device, with the illustrated wiper device being The wiper device 50 includes a wiper switch 51, a wiper amplifier 52, and a wiper motor 53. The wiper switch 51 includes a high-speed switch as shown in FIG. switch 51a, low speed switch 51b, and intermittent switch 51c. Each switch 51a, 51b, 51c is a switch terminal provided in the wiper amplifier 52. 52a, 52b, and 52c, respectively.

0003 In addition, the wiper motor 53 is provided with an armature 53a as shown in FIG. A power supply brush 53c, a high speed brush 53d, and a low speed brush are in pressure contact with the commutator 53b. The armature 53a is equipped with a brush 53e and an armature mounted on the armature 53a. Two contact plates 53g and 53h linked to the shaft 53f and these controllers Two contactors 53i, 53 contacting and separating from tact plates 53g, 53h An auto-stop switch 53k consisting of j is provided.

0004 Then, each brush 53c, 53d, 53e and each contactor 53i, 53j are the brush terminals 52d, 52e, 52f provided in the wiper amplifier 52 and the contactor end. The wiper amplifier 52 is connected to the switches 52g and 52h. Each brush terminal 52d, 52e, 52f corresponds to on/off switching of a, 51b. A power supply circuit that switches and supplies power to each brush 53c, 53d, and 53e via the By starting the timer in response to the on switching of the intermittent switch 51c, the Power is set in advance for each brush 53c, 53e via brush terminals 52d, 52e. It has a built-in timer circuit that drives the power supply circuit according to the supply time through the pause time. There is.

[0005] Further, the armature shaft 53f is connected to the vehicle body 6 via a link 54. A wiper blade 55 that swings relative to zero is connected.

[0006] In the wiper device 50 having such a structure, the high speed switch 51a is turned on. When switched, the high speed switch 51 is connected to the switch terminal 52a of the wiper amplifier 52. Since a ground circuit is formed by a, the brush terminal 52d of the wiper amplifier 52 and The brush terminal 52e connects the wiper motor 53 power supply brush 53c and high-speed brush. Power is supplied to 53d, and the armature shaft 53f rotates at high speed to link 54 to the wiper blade 55 to the wiping surface 56a of the windshield glass 56. On the other hand, the area between the lower inverted position a and the upper inverted position b is wiped with high-speed reciprocating motion. do.

[0007] Then, when the high-speed switch 51a is turned off in this state, the wiper amplifier A ground circuit is formed at the switch terminal 52a of the switch 52 by the high-speed switch 51a. However, when the wiper blade 55 is in a position other than the lower reverse position a, the armature The auto stop switch 53k rotates in conjunction with the rotation of the lock shaft 53f. The contactor 53j on one side is in contact with the contact plate 53g on the other side. Since the earth circuit continues to be formed by the contact plate 53h on the other side, Until the contactor 53j on one side comes into contact, the wiper amplifier 52 Continue to supply power to the power brush 53a and high speed brush 53b of the motor motor 53. When the wiper blade 55 reaches the lower reversal position a, the wiper blade 55 is moved to the wiper motor 53. Stop the power supply.

[0008] Also, when the low speed switch 51b is turned on, the low speed switch 51b is turned on, and the low speed switch 51b is turned on. Since a ground circuit is formed by the switch 51b, the brush end of the wiper amplifier 52 The power supply brush 53c of the wiper motor 53 is connected by the terminal 52d and the brush terminal 52f. Power is supplied to the speed brush 53e and the armature shaft of the wiper motor 53 Since the wiper blade 53f rotates at a low speed, the wiper blade 55 is attached to the windshield glass. Roast between the lower inversion position a and the upper inversion position b with respect to the wiping surface 56a of the When the speed is wiped back and forth and the low speed switch 51b is turned off, the above In the same way, the wiper motor 5 is rotated until the wiper blade 55 reaches the lower reversal position a. When the wiper blade 55 reaches the lower reversal position a by continuing to supply power to the Stop the power supply.

[0009] Then, when the intermittent switch 51c is turned on again, the wiper amplifier 52 is turned on. A ground circuit is formed at the switch terminal 52c by the intermittent switch 51c. Then, the timer circuit built into the wiper amplifier 52 is turned on, and the timer circuit starts making a reservation. The power is supplied to the brush terminals 52d and 5 during the supply time through the set rest time. 2f, the power supply brush 53c and low speed brush 53e of the wiper motor 53 are intermittently Supplied by

0010 The power supply brush 53c and low speed brush 53e of the wiper motor 53 are Since power is supplied intermittently during the supply time via The mature shaft 53f rotates and wipes the wiper blade 55 via the link 54. A lower inverted position a and an upper inverted position b with respect to the wiped surface 56a of the wind shield glass 56. Wipe away the gaps with a low-speed reciprocating motion.

[0011] Here, as the supply time elapses, the timer circuit of the wiper amplifier 52 is turned off. The ground circuit is cut off by the intermittent switch 51c in response to the downtime. , when the wiper blade 55 is in a position other than the lower inverted position a, the armature shaft The controller on one side of the auto stop switch 53k rotated in conjunction with the rotation of 53f. The contactor 53j on one side contacts the tact plate 53g and the ground circuit continues to form, so that the contact plate 53h on one side is From the wiper amplifier 52 to the wiper motor 53 until the contactor 53j comes into contact with the wiper motor 53. The wiper brake is activated by continuing to supply power to the power brush 53c and low speed brush 53e. When the card 55 reaches the lower reversal position a, the power supply to the wiper motor 53 is stopped. The operation is stopped and the wiper blade 55 is stopped at the lower reversal position a.

0012 Furthermore, the timer of the downtime set by the timer circuit of the wiper amplifier 52 is When the timer circuit turns on from the off state due to time-up, the timer circuit remains inactive until the next pause time. Since a ground circuit is formed corresponding to the supply time of The armature shaft 53f rotates and the wiper blade 55 is connected via the link 54. The lower inverted position a and the upper inverted position with respect to the wiping surface 56a of the windshield glass 56. The intermittent switch 51c is turned on by wiping the area between positions b in a low-speed reciprocating motion. While the switch is being performed, the motor shaft 53f of the wiper motor 53 rotates. Repeat the stop.

[0013]

[Problem that the idea aims to solve]

However, in the conventional wiper device 50 described above, the rotation speed of the wiper motor 53 is According to the switching position of each switch 51a, 51b, 51c, the speed Since it has a structure that can be switched without interruption, it corresponds to the on switching of the high speed switch 51a. The wiper motor 53 is rotated at high speed, and when the low speed switch 51b is turned on, the wiper motor 53 is rotated at high speed. Accordingly, the wiper motor 53 is rotated at low speed, and the intermittent switch 51c is turned on. The wiper motor 53 is rotated according to the power supply time through the preset rest time corresponding to the Because it has a structure that allows the vehicle to move even when the vehicle changes from a running state to a stopped state, The wiper blade 55 wipes at the same speed as inside, so it can be an eyesore. There is a problem that the wiper blade 55 may be worn out prematurely. The challenge was to solve these problems.

[0014]

[Purpose of invention]

Therefore, this idea was made in view of the conventional problems mentioned above, and it Automatically change the wiping speed of the wiper blade when the To provide a wiper device that performs accurate wiping without unnecessary wiping. The purpose is to

[0015]

[Means to solve the problem]

The wiper device according to this invention has a wiper motor that operates the wiper blade. , wiper switch that switches between high speed mode, low speed mode, intermittent mode, and stop mode. Detects whether the vehicle speed is higher or lower than a predetermined value and activates the driving mode, including while slowing down. A vehicle speed sensor that switches the mode while stopped, and the wiper switch and vehicle speed sensor. Supplying power to continuously operate the wiper motor according to the mode, and setting for each mode. A control mechanism that supplies and shuts off power that operates intermittently with a specified downtime. In a more preferred embodiment, the control The mechanism is that when the wiper switch is switched to high-speed mode, the vehicle speed sensor's driving mode is activated. It supplies power to the motor for continuous operation at high speed in the vehicle mode, and also powers the motor while the vehicle speed In the first downtime, power for intermittent operation is supplied to the wiper motor, and the wiper motor is When the speed switch is switched to low speed mode, the vehicle speed sensor's running mode is set to low. Supply power for continuous operation at high speed to the wiper motor and set the vehicle speed sensor to the stop mode. and a second pause time that is longer than the first pause time for intermittent operation. When power is supplied to the wiper motor and the wiper switch is switched to intermittent mode, the A third pause time shorter than the second pause time in the running mode of the speed sensor. During the rest period, power for intermittent operation is supplied to the wiper motor and the vehicle speed sensor is stopped. Intermittent operation with a fourth rest time that is longer than the third rest time in the mode When power is supplied to the wiper motor and the wiper switch is switched to stop mode, , the configuration includes a control mechanism that controls the termination of power supply to the wiper motor. In a further preferred embodiment, the vehicle speed sensor has a stop mode. The pause time of intermittent operation increases with the elapsed time when the board switches to running mode. and when the vehicle speed sensor's running mode switches to stopping mode. Equipped with a control mechanism that gradually increases the pause time of intermittent operation as time elapses. The wiper device has the above-mentioned configuration, which makes it possible to It is a means to solve problems.

[0016]

[Effect]

The wiper device according to this invention determines whether the vehicle is running depending on the mode of the vehicle speed sensor. It is designed to determine whether the vehicle is running or stopped, and the vehicle speed sensor's running mode, Stop mode and wiper switch high speed mode, low speed mode, intermittent mode, stop mode The control mechanism continuously operates the wiper motor according to the power supply and the motor. It supplies and shuts off power that operates intermittently with a set down time for each mode. Therefore, the rotation speed of the wiper motor can be adjusted using the high speed switch, low speed switch, and intermittent switch. Compared to a switch that switches between high speed, low speed, and intermittent, Since the rotation speed of the wiper motor can be adjusted according to the driving condition, it is easy for the driver to This eliminates the unsightly appearance and eliminates the risk of premature wear of the wiper blade.

[0017]

【Example】

1 to 6 show an embodiment of a wiper device according to this invention.

[0018] As is clear from FIG. 1, the illustrated wiper device 1 includes a wiper switch 2 and a control. It mainly consists of a control mechanism 3, a wiper motor 4, and a vehicle speed sensor 5.

[0019] As shown in FIG. 2, the wiper switch 2 has one end connected to ground. A high-speed switch 2a, a low-speed switch 2b, and an intermittent switch 2c are provided. Therefore, the other end of each of the switches 2a, 2b, 2c is a high speed switch provided in the control mechanism 3. Connect to the switch terminal 3a, low speed switch terminal 3b, and intermittent switch terminal 3c, respectively. There is.

[0020] Further, as shown in FIG. 3, when the high-speed switch 2a is turned on, Switch mode becomes high speed mode and low speed switch 2b is turned on. The switch mode becomes low speed mode, and the intermittent switch 2c turns on. As a result, the switch mode becomes an intermittent mode, and each of the switches 2a, 2b, The switch mode becomes the stop mode by turning off both of the switches 2c.

[0021] As is clear from FIG. 2, the wiper motor 4 has an armature. A power supply brush 4c, a high-speed brush 4d, and a low-speed brush 4d press against the commutator 4b provided in the commutator 4a. In addition, the armature brush 4e provided in the armature 4a is Two contact plates 4g and 4h linked to shaft 4f and these contacts An electrical circuit consisting of two contactors 4i and 4j that touch and separate from plates 4g and 4h. A toss stop switch 4k is provided.

[0022] Also, each brush 4c, 4d, 4e and each contactor 4i, 4j are controlled. Connect brush terminals 3d, 3e, 3f provided in mechanism 3 to contactor terminals 3g, 3h The armature shaft 4f is connected to the vehicle body 60 via a link 54. A wiper blade 55 that swings is connected.

[0023] Here, the control mechanism 3 includes the respective terminals 3a, 3b, 3c, 3d, 3e, 3f, In addition to 3g and 3h, a vehicle speed sensor terminal 3i and a power supply terminal 3j are provided. One end of the vehicle speed sensor 5 is connected to ground, and the other end of the vehicle speed sensor 5 is connected to the support terminal 3i. A power source 40 is connected to the power terminal 3j.

[0024] The vehicle speed sensor 5 is a speedometer switch, and as shown in FIG. When the vehicle speed is higher than 5km/h, the contact turns on and the vehicle speed mode changes to driving mode. When the vehicle speed is lower than 5 km/h, the contact turns off and the vehicle speed mode changes to the stopped mode. becomes the code.

[0025] The control mechanism 3 also has a running mode and a stopped mode based on the vehicle speed mode of the vehicle speed sensor 5. Medium mode and wiper switch 2 switch mode, high speed mode, low speed mode, Supplying power to operate the wiper motor 4 continuously by processing the intermittent mode using logical operations. First rest time T1, second rest time T2, and third rest time set for each mode T3, and a power supply that operates intermittently with a fourth downtime T4. power supply circuit, connected to this power supply circuit, and connected to this control circuit to control vehicle speed. The timer is activated when the vehicle speed mode of sensor 5 switches from running mode to stopped mode. A timer for power down time that starts the circuit and operates the wiper motor 4 intermittently. As time passes, the vehicle speed mode of the vehicle speed sensor 5 is set to the stopped mode. When switching from mode to running mode, the timer circuit is started and the wiper mode is activated. The downtime of the power supply that operates the motor 4 intermittently is gradually shortened as the timer time elapses. The switch mode of wiper switch 4 is set to stop mode. When the wiper motor 4 is in the mode, power is not supplied to the wiper motor 4.

[0026] The control mechanism 3 is equipped with an auto-stop switch 4k for the wiper motor 4. Contactors 4i and 4j contact and separate from contact plates 4g and 4h. detects the position of the wiper blade 55 and switches the wiper switch 2 to high speed mode and low mode. When switching from speed mode or intermittent mode to stop mode, as shown in Figure 2, When the wiper blade 55 is in a position other than the lower inverted position A, the wiper blade 55 is The power supply 40 is supplied to the wiper motor 4 until the wiper motor 4 reaches the reverse position A. ing.

[0027] In addition, in this embodiment, when the switch mode is the intermittent mode, the vehicle speed The pause time when the mode changes to the stopped mode, that is, the fourth pause time T4, is the second pause time. The same value as the stop time T2 is selected.

[0028] The wiper device 1 having such a structure performs the operations shown in FIGS. 3, 4, 5, and 6. conduct. Turn on the high speed switch 2a at point C in Figure 4 to set the switch mode. When the vehicle speed mode is set to high speed mode and the vehicle speed mode of the vehicle speed sensor 5 is in the running mode, the control mechanism The power brush 4c of the wiper motor 4 is connected to the brush terminal 3d and the brush terminal 3e of 3. , Power is supplied to the high-speed brush 4d, and the armature shaft 4f continuously moves at high speed. Rotate and connect the wiper blade 55 to the windshield glass 56 via the link 54. High-speed movement is performed between the lower reversal position A and the upper reversal position B with respect to the wiping surface 56a. Dispel with continuous reciprocating motion.

[0029] Also, when the switch mode is high speed mode, the vehicle speed mode is at point D in Figure 4. When the mode is switched from the running mode to the stopped mode, the logic circuit of the control mechanism 3 The timer circuit starts, and as the timer time of this timer circuit elapses, the timer circuit starts. Pausing time T1-1 in which the set time is sequentially increased until it stabilizes at the pausing time T1 of 1. , T1-2 for a time T0 is supplied via brush terminals 3d and 3e. Then, it is supplied to the power brush 4c and the high speed brush 4d.

[0030] As a result, the wiper motor 4 has a pause time T1 that becomes longer as time passes. -1, rotate armature shaft 4f intermittently at supply time T0 via T1-2 After that, the link 5 rotates intermittently during the supply time T0 via the first pause time T1. 4 to the wiper blade 55 against the wiping surface 56a of the windshield glass 56. Then, the area between the lower inverted position A and the upper inverted position B is wiped in an intermittent reciprocating motion.

[0031] Then, when the switch mode is the high speed mode, the vehicle speed mode is at point E in Figure 4. When the mode is switched from the stopped mode to the running mode, the logic circuit of the control mechanism 3 A timer circuit different from the timer circuit in the circuit starts, and the timer circuit of this timer circuit starts. Through pause times T1-3, which are successively set shorter as time passes, The power supply for the supply time T0 is supplied to the power supply brush 4 via the brush terminal 3d and the brush terminal 3e. c. After supplying the power to the high-speed brush 4d, the intermittent power is released to the power brush 4c. , the armature shaft 4f is continuously rotated at high speed as it is supplied to the high speed brush 4d. and move the wiper blade 55 through the link 54 to wipe the windshield glass 56. A high-speed continuous operation is performed between the lower reversal position A and the upper reversal position B with respect to the wiping surface 56a. Dispel with continuous back and forth motion.

[0032] Then, turn off the high speed switch 2a at point F in Fig. 4 and switch the switch mode. When the board is set to stop mode, the switch mode by high speed switch 2a is canceled. However, the control mechanism 3 turns off the wiper blade 5 by the auto stop switch 4. If it is detected that the wiper blade 55 is at a position other than the lower reversal position B, the wiper blade 55 is reversed at the lower position. The wiper motor 4 continues to be supplied with power 40 until it reaches position B. When the blade 55 reaches the lower inverted position, power supply is stopped.

[0033] Next, turn on the low speed switch 2b at point G in Figure 5 to set the switch mode. When the vehicle speed mode is set to low speed mode and the vehicle speed mode of the vehicle speed sensor 5 is in the running mode, the control mechanism The power brush 4c of the wiper motor 4 is connected by the brush terminal 3d and the brush terminal 3f of 3. , Power is supplied to the low-speed brush 4e, and the armature shaft 4f continuously moves at low speed. Rotate and connect the wiper blade 55 to the windshield glass 56 via the link 54. The wiping surface 56a is moved between the lower reversal position A and the upper reversal position B at low speed. Dispel with continuous reciprocating motion.

[0034] Also, when the switch mode is low speed mode, the vehicle speed mode is at point H in Figure 5. When the mode is switched from the running mode to the stopped mode, the logic circuit of the control mechanism 3 The timer circuit starts, and as the timer time of this timer circuit elapses, the timer circuit starts. Pausing time T2-1 in which the set time is sequentially increased until it stabilizes at the pausing time T2 of 2. , T2-2 for a time T0 is supplied via brush terminals 3d and 3f. Then, it is supplied to the power brush 4c and the low speed brush 4e.

[0035] As a result, the wiper motor 4 has a pause time T2 that increases as time passes. -1, T2 Rotates armature shaft 4f intermittently at supply time T0 via -2 After that, the link 5 rotates intermittently during the supply time T0 via the second pause time T2. 4 to the wiper blade 55 against the wiping surface 56a of the windshield glass 56. Then, the area between the lower inverted position A and the upper inverted position B is wiped in an intermittent reciprocating motion.

[0036] Then, when the switch mode is the low speed mode, the vehicle speed mode is at point I in FIG. When the mode is switched from the stopped mode to the running mode, the logic circuit of the control mechanism 3 A timer circuit different from the timer circuit in the circuit starts, and the timer circuit of this timer circuit starts. Through the pause time T2-3, the set time is set shorter sequentially as time passes. The power supply for the supply time T0 is supplied to the power supply brush 4 via the brush terminal 3d and the brush terminal 3f. c. After supplying the power to the low-speed brush 4e, the intermittent power is released to the power supply brush 4c. , the armature shaft 4f rotates continuously at low speed. and move the wiper blade 55 through the link 54 to wipe the windshield glass 56. A low speed sequence is performed between the lower reversal position A and the upper reversal position B with respect to the wiping surface 56a. Dispel with continuous back and forth motion.

[0037] Then, turn off the low speed switch 2b at point J in Fig. 5 and switch the switch mode. When the card is set to stop mode, the switch mode by low speed switch 2b is canceled. However, the control mechanism 3 turns off the wiper blade 5 by the auto stop switch 4. If it is detected that the wiper blade 55 is at a position other than the lower reversal position B, the wiper blade 55 is reversed at the lower position. The wiper motor 4 continues to be supplied with power 40 until it reaches position B. When the blade 55 reaches the lower inverted position, power supply is stopped.

[0038] Next, turn on the intermittent switch 2c at point K in Fig. 6 to set the switch mode. When the vehicle speed sensor 5 is in the intermittent mode and the vehicle speed mode of the vehicle speed sensor 5 is in the running mode, the controller The power supply brush 4 of the wiper motor 4 is connected to the brush terminal 3d and the brush terminal 3f of the structure 3. c. Power is supplied to the low-speed brush 4e for a supply time T0 via the third pause time T3. and the armature shaft 4f reaches the supply time T0 via the third rest time T3. Since the wiper blade 55 rotates intermittently, the wiper blade 55 is connected to the windshield via the link 54. Between the lower inverted position A and the upper inverted position B with respect to the wiped surface 56a of the shield glass 56 This is wiped away with intermittent reciprocating motion.

[0039] Also, when the switch mode is intermittent mode, the vehicle speed mode is at point L in Figure 6. When the mode is switched from the running mode to the stopped mode, the logic circuit of the control mechanism 3 The timer circuit starts, and as the timer time of this timer circuit elapses, the timer circuit starts. The pause time T3 is set by increasing the set time sequentially until it stabilizes at the second pause time T2. -1, T3-2 to supply time T0 power to brush terminal 3d and brush terminal 3f. The power is supplied to the power brush 4c and the low speed brush 4e through the power supply brush 4c and the low speed brush 4e.

[0040] As a result, the wiper motor 4 has a pause time T3 that becomes longer as time passes. -1, rotate armature shaft 4f intermittently at supply time T0 via T3-2 After that, it rotates intermittently during the supply time T0 via the second pause time T2, so the restart The wiper blade 55 is connected to the wiping surface 56 of the windshield glass 56 through the link 54. Wipe between the lower inverted position A and the upper inverted position B with respect to a with intermittent reciprocating motion.

[0041] When the switch mode is the intermittent mode, the vehicle speed mode is set to point M in Figure 6. When the mode is switched from the stopped mode to the running mode, the logic circuit of the control mechanism 3 A timer circuit different from the timer circuit in the circuit starts, and the timer circuit of this timer circuit starts. Through pause time T3-3, the set time is set shorter sequentially as time passes. The power supply for the supply time T0 is supplied to the power supply brush 4 via the brush terminal 3d and the brush terminal 3f. c. After supplying to the low-speed brush 4e, supply time T via third pause time T3 0 power is supplied to the power brush 4c and low speed brush 4e, so the armature The shaft 4f rotates intermittently to wind the wiper blade 55 via the link 54. The lower inverted position A and the upper inverted position B are located with respect to the wiped surface 56a of the shield glass 56. Wipe away the dirt with an intermittent back and forth motion.

[0042] Then, turn off the intermittent switch 2c at point N in Fig. 6 to switch mode. When set to stop mode, the switch mode by intermittent switch 2c is canceled. However, when the wiper blade 55 is activated by the auto stop switch 4, the control mechanism 3 If it is detected that the wiper blade 55 is in a position other than the lower reversed position B, the wiper blade 55 is moved to the lower reversed position. Continue supplying power 40 to the wiper motor 4 until it reaches the wiper motor 4. When the card 55 reaches the lower inverted position, power supply is stopped.

[0043] In addition, in one embodiment of the wiper device related to this invention, the switch mode is mode and the vehicle speed mode changes to the stopped mode, that is, the fourth pause The time is chosen to be equal to the second pause time, but the two values are chosen to be different. The fourth pause time may be selected to be larger than the second pause time. Furthermore, this In one embodiment of the wiper device according to the invention, the first downtime T1, the second downtime T2 and the third pause time T3 were set to different times due to the relationship T1<T3<T2. , the pause times T1, T2, and T3 may be the same time; Needless to say, it is possible to implement this idea.

[0044]

[Effect of the idea]

As explained above, the wiper device according to this invention has the above-mentioned configuration. Therefore, the vehicle speed sensor's running mode and stopping mode and the wiper switch's high-speed mode are The control mechanism controls the wiper motor depending on the mode, low speed mode, intermittent mode, and stop mode. A power supply that operates continuously, an intermittent power supply with a down time set for each mode. The wiper motor rotation speed is controlled by the High speed, low speed, Compared to a wiper motor that switches intermittently, the rotation speed of the wiper motor changes depending on the vehicle's driving condition. change the rotation speed of the wiper motor in unnatural steps. Since there are no wipers, it is no longer an eyesore for drivers, reducing fatigue when using the wipers. The wiper blade is Extends the life of the wiper blade by preventing premature wear, and provides a switch to the vehicle speed sensor. Since it is operated only by switching on and off, no complicated electronic circuit is required. This has the effect of making it cheaper without having to do so.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of a wiper device according to the invention.

FIG. 2 is a specific configuration diagram of the wiper device shown in FIG. 1.

FIG. 3 is an explanatory diagram of the operation in each mode in the wiper device shown in FIG. 1;

FIG. 4 is a time chart of switching of a high-speed switch of the wiper device shown in FIG. 1;

FIG. 5 is a time chart of switching of a low-speed switch of the wiper device shown in FIG. 1;

FIG. 6 is a time chart of switching of the intermittent switch of the wiper device shown in FIG. 1;

FIG. 7 is a block diagram of a conventional wiper device.

8 is a specific configuration diagram of the wiper device shown in FIG. 7. FIG.

[Explanation of symbols]

1 Wiper device 2 Wiper switch 3 Control mechanism 4 Wiper motor

Claims (3)

[Scope of utility model registration request] Claim 1: A wiper motor that operates a wiper blade, a wiper switch that switches between high-speed mode, low-speed mode, intermittent mode, and stop mode, and detects whether the vehicle speed is higher or lower than a predetermined value and selects a running mode or slow-moving mode. A vehicle speed sensor that switches modes during a stop including a vehicle speed sensor, a supply of power that continuously operates the wiper motor according to the mode of the wiper switch and vehicle speed sensor, and a supply of power that operates intermittently with a rest time set for each mode. , a wiper device characterized by being equipped with a control mechanism for cutting off power. 2. When the wiper switch is switched to the high-speed mode, the control mechanism supplies power for continuous operation at high speed to the motor when the vehicle speed sensor is in the running mode, and supplies power to the motor for continuous operation at high speed when the vehicle speed sensor is in the stopped mode. Power is supplied to the wiper motor for intermittent operation during the rest period, and when the wiper switch is switched to low speed mode, power is supplied to the wiper motor for continuous operation at low speed when the vehicle speed sensor is in running mode, and when the vehicle speed sensor is stopped. In the driving mode of the vehicle speed sensor, when power for intermittent operation is supplied to the wiper motor during a second pause time that is longer than the first pause time and the wiper switch is switched to the intermittent mode, the vehicle speed sensor is in the running mode. A fourth pause in which power for intermittent operation is supplied to the wiper motor during a third pause time that is shorter than the second pause time, and where the pause time is longer than the third pause time when the vehicle speed sensor is in a stopped mode. Claim (1) characterized in that the wiper motor is provided with a control mechanism that controls to supply power for intermittent operation to the wiper motor at certain times and to stop supplying power to the wiper motor when the wiper switch is switched to a stop mode.
The wiper device described. [Claim 3] When the stopped mode of the vehicle speed sensor is switched to the running mode, the pause time of the intermittent operation is sequentially set to be shorter as the time elapses, and the running mode of the vehicle speed sensor is switched to the stopped mode. The wiper device according to claim 1 or 2, further comprising a control mechanism that sequentially sets the pause time of the intermittent operation to be longer as time elapses when the wiper device is activated.