JPH059970Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention]

(Industrial Application Field) This invention relates to a wiper device including a storage mechanism that is used to take the wiper blade out of the storage position when it is in use and to store the wiper blade in the storage position when it is not in use. (Prior Art) Conventionally, a wiper device as described above was disclosed in Japanese Patent Publication No. 40-2091. 7 and 8 show the wiper device disclosed in the above publication. That is, in the wiper device 100 shown in the figure, when the manual switch 120 is operated from the storage side to the actuation side, the movable contact 121 of the automatic switch 121
a comes into contact with the fixed contact 121b, and the movable contact 121c becomes non-contact, and the storage electric motor 122
is driven. As a result, the entire device rotates in the direction of the arrow a through the gear 101 and the gear 103 attached to the fixed shaft 102, and the movable contact 121a switches from the fixed contact 121b to the fixed contact 121d and then to the fixed contact 121e, and at the same time moves. Contact 121
c contacts the fixed contact 121f. Then, a roller 105 provided at the tip of the support frame 104 moves the storage lid 1
06 is pushed open, the window cleaning electric motor 123 is driven, and the blade 110 is moved through the link 107, the pivot 108, and the wiper arm 109 to the storage lid 106.
Wipe the glass surface 130 from the open area. Next, when the manual switch 120 is operated from the operating side to the retracting side, when the blade 110 comes to the stop position range, the cam contact 1 of the window cleaning motor 123
23a is opened, the cam contact 123b is closed, and the window cleaning motor 123 is stopped. At the same time, a current flows in the storage motor 122 in the opposite direction to the above state, causing the device to rotate in the opposite direction, and the entire device rotates in the direction opposite to the direction of the arrow a, and the storage lid 106 is closed and stored. . (Problems to be solved by the invention) However, since the conventional retractable wiper device 100 is not linked to the washer, the washer must be operated separately from the wiper operation, making the operation extremely complicated. There was a problem in that the safety of vehicles was hindered to some extent. (Purpose of the invention) This invention was developed by linking the washer to a wiper storage device that allows the pivot base part on which the wiper pivot shaft is attached and the blade base part on which the wiper blade is mounted to be raised and lowered independently. The purpose is to solve problems.

[Structure of the idea]

(Means for Solving the Problems) The washer-linked retractable wiper device according to this invention is a retractable wiper device that is equipped with a wiper that can be stored in a cowl box between the rear end of the hood and the windshield glass. , a pivot base portion including a wiper motor, a wiper pivot shaft connected to the wiper motor and reciprocally rotated, and a concealing body for concealing the pivot shaft; a blade base portion on which a wiper plate connected to the wiper pivot shaft is mounted when the wiper is stored; Each lift mechanism independently raises and lowers the pivot base portion and the blade base portion, a lift motor that operates each lift mechanism, and a washing liquid is applied to the windshield glass surface from a washer nozzle provided at a position corresponding to the windshield glass surface. The base position sensor detects that the two base parts have reached the upper limit position by operating the lift motor in response to the ON signal of the washer switch to raise the base parts. The washer motor and wiper motor are sequentially activated by the detection signal, the washer motor is stopped by the OFF signal of the washer switch, and the wiper blade is moved to a predetermined storage position, and it is detected that the wiper blade has reached the predetermined storage position. The present invention is characterized by comprising a control means for operating a lift motor in response to a detection signal from a wiper position sensor to lower the base parts, and for controlling a washer motor and a wiper motor to be inoperable while the lift motor is operating. . (Embodiment) An embodiment of the washer-linked retractable wiper device according to this invention will be described below with reference to FIGS. 1 to 6. Figures 1, 2, and 3 are mechanism explanatory diagrams, Figure 4 is a circuit diagram, and Figures 5A, B, C, and D show the engaged state of the lift motor's output cam and the lift mechanism. The respective explanatory diagrams and FIG. 6 are time charts. In the washer-linked retractable wiper device 1 shown in FIGS. 1, 2, and 3, reference numeral 2 represents a vehicle body mounting base, and reference numeral 3 represents a lift motor that separately operates the lift mechanisms 5 and 6, respectively. The lift motor 3 has output cams 3a and 3b of an integral two-stage structure at its output portion. The lift mechanism 5 includes an arm 5a that engages with the output cam 3a and is driven in two directions shown by arrows, and an X-link mechanism 5b that moves up and down by the drive of the arm 5a.
Consists of etc. The lift mechanism 6 also includes an arm 6a that engages with the output cam 3b and is driven in two directions indicated by arrows.
and an X-link mechanism 6b that moves up and down by the drive of the arm 6a. Reference numeral 7 denotes a panel 7a which is attached to the X-link mechanism 5b constituting the lift mechanism 5 and rotatably fixes a wiper motor 15 and a wiper pivot shaft 8 which is connected to the wiper motor 15 and rotates back and forth; The pivot base portion includes a concealing body 7b having a substantially U-shaped cross section.
A washer nozzle 14a is attached to the bottom wall 7c of the concealment body 7b for spraying a cleaning liquid onto the windshield glass 20 surface. Reference numeral 10 designates a blade base portion which is mounted on the X-link mechanism 6b constituting the lift mechanism 6, and on which the wiper blade 9 is mounted, which is connected to the wiper pivot shaft 8 via the wiper arm when the wiper is retracted, and has a cross section of approximately C. It is shaped like a letter. The wash nozzle 14a is connected via a hose (not shown) to a wash motor 14 integrally connected to a pump shown in FIG.
It's starting to gush out. This washer-linked retractable wiper device 1 is installed in a cowl box 23 between the rear end of a bonnet hood 22 and a windshield glass 20 of a vehicle body 21, as shown in FIG. In addition, in the stored state, the upper surface of the concealing body 7b and the upper surface of the blade base portion 10 are flush with the surface of the hood 22. Then, by the operation of the lift motor 3 shown in FIG.
and the blade base portion 7 are adapted to be raised and lowered separately. The pivot base portion 7 and the blade base portion 10 are lowered into the cowl box 23 when the washer is not in use, and when the washer starts operating, that is, when the washer motor 14 is activated, both base portions 7 and 10 first rise to the upper limit. When the position is reached, the washer motor 14 is activated, and after a predetermined delay, the wiper motor 15 is activated. When the wiper blade 9 reaches the vicinity of the blade reversal position from the blade storage position due to the operation of the wiper motor 15, the washer motor 14 and the wiper motor 1
5 and then remove the blade base part 1.
0 into the cowl box 23 and reaches the lower limit position, the washer motor 14 and wiper motor 1
5 will be reactivated. When the washer stops operating, the washer motor 14 immediately stops. Furthermore, when the wiper blade 9 reaches the blade reversal position, the wiper motor 15 is temporarily stopped and raises the blade base portion 10. When the blade base section 10 reaches the upper limit position, the wiper motor 15 is restarted, and when the wiper blade 9 reaches the blade storage position, it stops, and the wiper blade 9 is mounted on the blade base section 10. When the wiper motor 15 stops, the pivot base part 7 and the blade base 1
0 are both arranged to descend into the cowl box 23. Next, the washer-linked retractable wiper device 1 will be explained in more detail based on FIGS. 4 to 6. That is, in FIG. 4, numeral 11 is a wiper switch, numeral 12 is a control circuit unit equipped with a circuit for converting the signal of the wiper switch 11 into electric power, numeral 13 is an intermittent amplifier, numeral 14 is a washer motor integrally connected with a pump, and numeral 12 is a control circuit unit equipped with a circuit for converting the signal of the wiper switch 11 into electric power. 15 is a wiper motor equipped with an auto-stop switch 15a and a wiper position sensor _S4 for detecting when the wiper blade ₉ shown in FIG. A wiper position sensor 25 is a control unit equipped with a logic circuit, which detects when the blade 9 has reached the blade storage position.The lift motor 3 lifts the pivot base 7 and the blade base 10 shown in FIG. The base position sensors S ₁ , S ₂ , and S ₃ are respectively driven separately through mechanisms 5 and 6 and whose operating positions are detected by a cam C made of a conductive material that rotates in conjunction with a motor M. ing. The wiper switch 11 includes an intermittent switch 11a that issues a signal to drive the wiper motor 15 intermittently after a predetermined rest time, and a low-speed switch 11b that issues a signal to drive the wiper motor 15 continuously at a low speed. Washer motor 1
The watch switch 11c sends a signal for driving the watch. The control circuit section 12 includes an excitation coil _l5 that operates a relay contact _l5 ' with a signal from the low-speed switch 11b;
Transistor Tr ₁ and watch switch 11c
The excitation coil l ₄ activates the relay contact l ₄ ′ with the signal of
and diodes D ₅ , D ₆ , D ₇ , and D ₈ . The intermittent amplifier 13 includes a timer circuit 13a equipped with an IC, a diode _D1 , and a capacitor.
C ₂ and an excitation coil RL ₁ that operates the relay contact RL ₁ .
and an excitation coil RL ₂ that operates the relay contact RL ₂ , and an intermittent switch 11 of the wiper switch 11.
The wiper motor 15 is driven intermittently with a predetermined rest time by the signal a. The control unit 25 has terminals T ₁ , T ₂ ,
It is equipped with excitation coils l ₁ , l ₂ , l ₃ that are excited through T ₃ , and these excitation coils l ₁ , l ₂ , l ₃
It is equipped with relay contacts l ₁ ′, l ₂ ′, and l ₃ ′ that are activated by excitation. That is, the terminal 11d of the wiper switch 11 is connected to the terminal 12c of the control circuit section 12, and the terminal 1e of the wiper switch 11 is connected to the terminal of the intermittent amplifier 13 and the terminal 12b of the control circuit section 12. Further, the terminal 11f of the wiper switch 11 is grounded, and the terminal 11f of the wiper switch 11 is grounded.
g is connected to the terminal 12a of the control circuit section 12. The terminal 12d of the control circuit section 12 is connected to the input terminal _P6 of the logic circuit of the control section 25, and
The terminal 12e is connected to a terminal of an intermittent amplifier 13, and is also connected to a B power source via a washer motor 14. A terminal 12f of the control circuit section 12 is connected to a terminal of the intermittent eye 13, and a terminal 12g is connected to a terminal 25c of the control section 25 and a low speed terminal 15g of the wiper motor 15. The terminal 12h of the control circuit section 12 is grounded, and the terminal 12i is connected to the terminal 25b of the control section 25 and the B power supply.
The terminal 12j of the control circuit section 12 is connected to the control section 2.
It is connected to the terminal 25a of No. 5. Input terminal P ₅ of the logic circuit is wiper position sensor S ₅
The input terminal _P4 is connected to the wiper position sensor _S4 through the terminal 15f of the wiper motor 15. The input terminal P ₁ is connected to the base position sensor S ₁ through the terminal 3c of the lift motor 3, and the input terminal P ₂ is connected to the terminal 3d of the lift motor 3.
Connect to the base position sensor S ₂ through the input terminal
P ₃ is connected to the base position sensor S ₃ through the terminal 3e of the lift motor 3. Also, the terminal 25d
is connected to the terminal 15b of the wiper motor 15, the terminal 25e is connected to the terminal of the intermittent amplifier 13, and the terminal 25f is connected to the terminal 3 of the lift motor 3.
b, the terminal 25g is connected to the terminal 3a of the lift motor 3, and the terminal 25h is grounded. On the other hand, the terminal of the intermittent amplifier 13 is connected to the B power supply, the terminal is connected to the terminal 15d of the wiper motor 5, and the terminal is grounded. On the other hand, the terminal 15c of the wiper motor 15 is connected to the B power supply, and the terminal 15e is grounded. Note that the terminal 15h is a high-speed terminal. The wiper switch 11, control circuit 12, intermittent amplifier 13 and control section 25 constitute a control means 26 for controlling the present apparatus. Here, in the lift motor 3, the output cam 3
a, 3b and arms 5a, 6a of lift mechanisms 5, 6
The correlation between the cam C and the base position sensors S ₁ , S ₂ , and S ₃ will be described based on FIG. 4 and FIGS. 5A to 5D. When the wiper is in the retracted state, the conductive protrusion C' of the cam C is in contact with the base position sensor _S1 . At this time, the output cam 3a, the arm 5a, and the output cam 3
b and the arm 6a are in an engaging relationship as shown in FIG.
are both at the lower limit position. Output cam 3a due to forward rotation of lift motor 3,
3b rotates forward, the lift mechanisms 5 and 6 rise to the fifth position.
In the state shown in FIG. 3, the pivot base portion 7 and the blade base portion 10 are at the upper limit position, and at this time the conductive protrusion C' comes into contact with the base position sensor _S2 . When the condition shown in Fig. 5B is reached, lift motor 3 is activated again.
When the blade rotates in the forward direction, the lift mechanism 6, that is, the blade base part 10, descends and reaches the lower limit position at the position shown in FIG. It remains as it is. The conductive protrusion is located at the position shown in Fig. 5 (c).
C' is in contact with the base position sensor _S3 . When the lift motor 3 rotates in the reverse direction in the state shown in FIG.
is raised and the blade base part 1 is moved up to the position shown in Fig. 5D.
0 reaches the upper limit position, but the lift mechanism 5 is not driven and the pivot base portion 7 remains at the upper limit position. At this position shown in FIG. 5D, the conductive protrusion C' comes into contact with the base position sensor _S2 . Furthermore, when the lift motor 3 rotates in the reverse direction again in the state shown in FIG. 5D, both the lift mechanisms 5 and 6 descend, and the pivot base part 7 and the blade base part 10 reach the lower limit position at the position shown in FIG. 5A. . At this time, the conductive protrusion C' comes into contact with the base position sensor _S1 . Next, the operation of the washer switch 11c will be explained. Here, the circuit diagram shown in FIG. 4 shows that the pivot base part 7, which includes the wiper pivot shaft 8, the wiper motor 15, and the washer nozzle 14a, and the blade base part 10, on which the wiper blade 9 is mounted when the wiper is retracted, are both in a lowered state. It shows. First, when the watch switch 11c of the wiper switch 11 is turned on, the transistor _Tr1 of the control circuit section 12 is turned on. In addition, a ground signal is input to terminal P ₆ of the control unit 25, and the logic circuit
The potential of T ₁ becomes "low", exciting coil l ₁ is excited, and relay contact l ₁ ' is switched, so that lift motor 3 rotates in the forward direction, and both pivot base portion 7 and blade base portion 10 rise. When the blade base portion 10 reaches the upper limit position, the conductive protrusion C' of the cam C, which is made of a grounded conductor and rotates in conjunction with the lift motor 3, contacts the base position sensor _S2 and returns to the base position. Sensor S ₂ is grounded. Therefore, the logic circuit of the control unit 25 sets the potential of the terminal T ₁ to "high", the excitation of the excitation coil l ₁ is released, the lift motor 3 stops, and the logic circuit sets the potential of the terminal T ₃ to "low". ', the excitation coil _l3 is excited and its relay contact _l3 ' is switched. When the potential of the terminal T ₃ becomes "low" by the logic circuit, the transistor Tr ₁ of the control circuit section 12 is in an ON state, so the excitation coil l ₄ is excited and its relay contact l ₄ ' is switched. Therefore, the washer motor 14 is activated to eject cleaning liquid from the washer nozzle 14a, and the terminal of the intermittent amplifier 13 is grounded. When the terminal of the intermittent amplifier 13 is grounded, the delay circuit 13b is activated for a predetermined period of time (for example,
0.6 seconds), a ground signal is input to one terminal of the IC. Then, the potential of terminal 7 of the IC becomes "low", exciting coil RL ₁ is excited, and its relay contact rl ₁
is grounded. By grounding the relay contact rl ₁ , the excitation coil
While RL ₂ is excited, the terminal of the intermittent amplifier 13 is grounded. As a result, wiper motor 1
5 rotates in the forward direction, and the wiper blade 9 swings to wipe the surface of the windshield glass 20 shown in FIG. When _the wiper blade 9 reaches a position near the blade reversal position shown in _FIG . ”, and the potential of terminal _T1 becomes “low”. As a result, the wiper motor 15
Once stopped, the excitation coil _l1 is excited, the lift motor 3 rotates forward, and the blade base portion 10 descends. When the blade base portion 10 reaches the lower limit position, the conductive protrusion C' of the cam C provided on the lift motor 3 comes into contact with the base position sensor _S3 , and the base position sensor _S3 is grounded. Here, the washer motor 14 is also connected to the wiper position sensor _S4 .
It is temporarily stopped from the time when the base position sensor _S3 is activated until the base position sensor S3 is grounded. Then, when the base position sensor S ₃ is grounded, the terminal is connected by the logic circuit.
As the potential of T ₁ becomes "high", the potential of terminal T ₃ becomes "low". As a result, the lift motor 3 is stopped, the washer motor 14 is activated, and the wiper motor 15 is rotated in the forward direction. That is, the washer motor 14 continuously operates to cause the washer nozzle 14a shown in FIG. 1 to eject cleaning liquid, and the wiper motor 15 continuously rotates in the forward direction to cause the wiper blade 9 to perform a wiping operation. Next, when the watch switch 11c of the wiper switch 11 is turned off, the potential of the terminal _P6 of the control section 25 becomes "high". Furthermore, as the transistor _Tr1 is turned off by the OFF operation of the washer switch 11c, the excitation coil _l4 is de-energized, and the washer motor 14 is immediately stopped to stop ejecting water from the washer nozzle 14a. Excitation coil l ₄ becomes de-energized and its relay contact
By switching _l4 ', the potential of the terminal of the intermittent amplifier 13 becomes "high" and the potential of one terminal of the IC becomes "high", but the potential of the 7th terminal of the IC becomes "high" for a predetermined time determined by the timer circuit 13a. The "low" state of the potential is maintained, the wiper motor 15 continues to rotate in the forward direction, and the wiper blade 9 performs a wiping operation. When the wiper blade 9 reaches a position near the blade reversal position, that is, a position that is not in the predetermined retracted position, and the wiper position sensor _S4 is activated and grounded, the potential of the terminal _T3 becomes "high" by the logic circuit, and the terminal _T2 becomes "low" and the wiper motor 15 stops. Also, the potential of terminal _T2 is set to “low” by the logic circuit.
When this occurs, the excitation coil l ₂ is excited and its relay contact l ₂ ' is switched and grounded, so the lift motor 3 rotates in the opposite direction and the blade base portion 10 rises. When the blade base portion 10 reaches the upper limit position, the cam C of the lift motor 3 rotates and the conductive protrusion
Since C′ is in contact with the base position sensor S ₂ and the base position sensor S ₂ is grounded, the logic circuit causes the terminal
As the potential of T ₂ becomes "high", the potential of terminal T ₃ becomes "low". This makes the excitation coil l ₂
becomes de-energized, and the lift motor 3 stops. During this time, the driving time of the timer circuit 13a runs out. When the potential of the terminal _T3 of the logic circuit becomes "low", the excitation coil _l3 is excited, its relay contact _l3 ' is switched, the wiper motor 15 rotates forward, and the wiper blade 9 reaches the blade reversal position. Then, the auto-stop switch 15a of the wiper motor 15 operates and switches to the B power supply side, so that no current flows to the excitation coil RL ₂ of the intermittent amplifier 13, and its relay contact RL ₂ switches, causing the wiper motor 15 to rotate in reverse. Start. and,
When the wiper blade 9 reaches a blade storage position further below the blade reversal position by a rise-up mechanism (not shown), the auto-stop switch 15a is switched to the grounding side and the wiper motor 15 is stopped. At the same time, the wiper position sensor _S5 is activated and grounded, and the logic circuit causes the potential of the terminal _T3 to become "high" and the potential of the terminal _T2 to become "low".
, the lift motor 3 rotates in the opposite direction, the pivot base part 7 and the blade base part 10 both descend, and when they reach the lower limit position, the conductive protrusion C' of the cam C of the lift motor 3 contacts the base position sensor _S1 . The base position sensor _S1 is then grounded. As a result, the potential of the terminal _T2 becomes "high" by the logic circuit, and the lift motor 3 stops. In the detailed description and drawings of this invention, the washing nozzle 14a is shown as being provided on the pivot base portion 7, but the mounting position of the washing nozzle 14a is not limited in any way, and the washing nozzle 14a is mounted on the windshield. It goes without saying that this invention can be used as long as it is attached at a position corresponding to the surface of the glass 20, for example, when it is attached on the bonnet hood 22 or on the wiper blade 9.

[Effect of the idea]

As explained above, according to the washer-linked retractable wiper device of the present invention, even when the pivot base part and the blade base part are retracted, both can be wiped by simply turning on the washer switch. After raising the base part and making the wiper blade ready for operation, the washer motor is activated to eject cleaning liquid from the washer nozzle, and after a slight delay, the wiper motor is activated to activate the wiper blade to clean the windshield glass. The pivot base and blade base can be lowered simply by turning the washer switch OFF, so there is no need to operate the washer and wiper separately as in the conventional case. Since this makes it extremely easy to operate the vehicle, it can contribute to the safe operation of vehicles. Furthermore, since the washer motor is inoperable while the lift motor is in operation, that is, while both base parts are in operation, the cleaning liquid is not wasted and can be used effectively, which is an excellent effect. It is something.

[Brief explanation of drawings]

Fig. 1 is a schematic mechanical explanatory diagram showing one embodiment of the wash-linked retractable wiper device according to this invention, and Fig. 2 is an external view of a vehicle with the wash-linked retractable wiper device shown in Fig. 1 installed. FIG. 3 is an external view of the lift motor portion of the washer-linked retractable wiper device shown in FIG. 1, FIG. 4 is a circuit diagram showing an embodiment of the washer-linked retractable wiper device according to this invention, and FIG. 5 A, b, ha,
D is an explanatory diagram showing the engagement state of the output cam of the lift motor and the lift mechanism, FIG. 6 is a time chart diagram illustrating the operation of each mechanism in the washer-linked storage wiper device according to this invention, and FIG.
This figure is a side view of a conventional retractable wiper device, and FIG. 8 is a circuit diagram of the retractable wiper device shown in FIG. 1... Washer interlocking retractable wiper device, 3...
... Lift motor, 5 ... Lift mechanism, 6 ... Lift mechanism, 7 ... Pivot base part, 7b ... Concealing body, 8 ... Wiper pivot shaft, 9 ... Wiper blade, 10 ... Blade base part, 11c ... Washer switch, 14... Washer motor,
14a...wash nozzle, 15...wiper motor, 20...windshield glass, 22...
... Hood, 23 ... Cowl box, 26 ... Control means, S ₁ , S ₂ , S ₃ ... Base position sensor, S ₄ ,
S ₅ ...Wiper position sensor.

Claims (1)

[Scope of Claim for Utility Model Registration] A retractable wiper device having a wiper that can be stored in a cowl box between the rear end of the hood and the windshield glass, comprising a wiper motor and a wiper pivot shaft that is connected to the wiper motor and rotates back and forth. and a concealing body for concealing the pivot shaft; a blade base portion on which a wiper blade connected to the wiper pivot shaft is mounted when the wiper is retracted; and the pivot base portion and the blade base portion are each independently raised and lowered. a lift mechanism for operating each lift mechanism; a washer motor for spouting a cleaning liquid onto the windshield glass surface from a washer nozzle provided at a position corresponding to the windshield glass surface; The ON signal from the switch activates the lift motor to raise both base parts, and the detection signal from the base position sensor that detects that both base parts have reached the upper limit position sequentially activates the washer motor and wiper motor. The washer motor is stopped by an OFF signal from the shear switch, and the wiper blade is moved to a predetermined storage position, and the lift motor is activated by a detection signal from a wiper position sensor that detects that the wiper blade has reached the predetermined storage position. A washer-linked retractable wiper device comprising control means for lowering both base portions and disabling a washer motor and a wiper motor while the lift motor is in operation.