JPH09328058A - Wiper for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly and stable inject washer liquid within the operation range of a wiper by making a nozzle port for injecting washer liquid integral with the wiper device. SOLUTION: A vinyl hose 14 for forming a flow passage for washer liquid is laid in a wiper 1. Specifically, the hose 4 is laid from the base end side 2a of a wiper arm 2 through a wiper blade metal fitting 3 and from a pin 6 as a connecting part between the wiper blade metal fitting 3 and a wiper blade 4, divided into two left and right directions and up to nearly both ends of the wiper blade 4. Totally eight nozzle ports 15a to 15h are provided in the moving directions λ and σ of the wiper blade 4. Thus, washer liquid is uniformly and stably injected within the operation range of the wiper 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device for a vehicle provided on a windshield or a rear glass of a vehicle such as an automobile.

[0002]

2. Description of the Related Art Conventionally, a passenger car or the like has been provided with a wiper device. By operating the wiper device, the wiper blade is slidably contacted with the windshield or the rear glass and reciprocally rotated to adhere to the glass. Removes raindrops and dirt. Then, when the wiper device is activated, the washer switch integrated with the wiper switch is turned on if necessary, and the washer liquid is jetted toward the glass from the nozzle opening of the washer device provided on the bonnet to contaminate it. It has improved the removal effect.

[0003]

However, in this wiper device, the nozzle port for injecting the washer liquid and the wiper device are separately provided, and the washer liquid is discharged from the nozzle port provided at the lower front of the windshield. Therefore, when the washer fluid is injected while the vehicle is running, the washer fluid may be displaced within the operating range of the wiper blade of the wiper equipment due to the deviation from the operation timing of the wiper equipment and the upward flow of the washer fluid due to wind pressure. In some cases, the liquid may not be applied uniformly, or the washer liquid may not be sprayed in front of the wiper blade in the direction of the dirty portion.

Further, since the nozzle opening is provided upward in the direction of the windshield, dust or the like is easily clogged in the nozzle opening, and a specified amount of washer liquid can be stably ejected from the nozzle opening. For these reasons, there is a problem that it is difficult to reliably remove raindrops, dirt and the like adhering to the windshield and the like.

The present invention has been made in view of such circumstances, and by integrating the nozzle port for injecting the washer liquid with the wiper device, the washer liquid can be uniformly and stably maintained within the operating range of the wiper device. It is an object of the present invention to provide a wiper device for a vehicle that can be jetted and can reliably remove raindrops, dirt, and the like attached to glass.

[0006]

In order to achieve the above object, a vehicle wiper device according to a first aspect of the present invention is a wiper arm which is rotated by rotation of a motor, and a wiper blade which is connected to a tip portion of the wiper arm. In a wiper device having a metal fitting and a wiper blade supported on the tip of the metal fitting, a washer liquid flow passage is formed from the wiper arm to the wiper blade, and a washer liquid is jetted at the tip of the flow passage. A plurality of nozzle openings are provided on both sides of the wiper blade in the moving direction, respectively.

According to this vehicle wiper device, for example, when the wiper arm rotates due to the rotation of the motor due to the turning on of the wiper switch, the wiper blade reciprocally rotates while slidingly contacting the glass surface via the wiper blade fitting. To do. Along with this rotation, the washer liquid is circulated and supplied through the flow passage formed from the wiper arm and the wiper blade fitting to the wiper blade, and jetted toward the glass from the nozzle port at the tip of the flow passage.

Since a plurality of nozzle openings are provided on both sides in the moving direction of the wiper blade, the washer liquid is jetted at least immediately before the moving direction while following the movement of the wiper blade. Therefore, the washer liquid is uniformly sprayed over the entire operating range of the wiper device, the upward flow of the washer liquid due to the wind pressure is prevented, and the nozzle opening is directed obliquely downward in the glass direction. Therefore, it becomes difficult for dust to enter,
The washer fluid is stably ejected.

In the wiper device according to the second aspect of the present invention, the flow passage is formed by a flexible hose, the base end of the hose is connected to the washer liquid supply means, and a nozzle function is provided at the tip end opening of the hose. It is characterized by having it. According to this wiper device, for example, a flexible vinyl hose
The wiper blade is attached to a blade stay or the like, and its front end opening is arranged so as to be oriented in the blade rubber direction from both side surfaces of the blade stay. The tip opening of this vinyl hose functions as a nozzle port, and the washer liquid is jetted.

Further, the wiper device according to a third aspect of the present invention is characterized in that the injection of the washer liquid is started substantially at the same time as the operation of the wiper blade, and is stopped before a predetermined time when the wiper blade is stopped. According to this wiper device,
Since the washer liquid is sprayed almost simultaneously with the operation of the wiper blade, there is no idle operation when the washer liquid is not adhered to the glass, scratches on the glass surface are prevented, and the washer liquid is stopped when the wiper blade is stopped. After the injection is stopped, the idle operation is performed, for example, two or three times to remove the washer liquid adhering to the glass and then stopped, so that a good cleaning effect on the glass surface can be obtained.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show an embodiment of a vehicle wiper device according to the present invention. FIG. 1 is a front view thereof, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. FIG. 4 is a plan view of a vehicle using the apparatus, FIG. 4 is a basic block diagram showing the system, and FIG. 5 is a flowchart showing an example of its operation.

1 and 2, the wiper device 1
Is a wiper arm 2, a wiper blade fitting 3,
It has a wiper blade 4 and the like. Wiper arm 2
Has a wiper motor 18 (see FIG. 3,
A bearing portion 5 connected to a rotating shaft of a motor 18 will be provided, and a base end side 3a of a wiper blade fitting 3 is fixed to a tip end side 2b thereof.

The wiper blade fitting 3 is bent and formed in a substantially U-shape when viewed from the front and has a substantially U-shaped cross-section. Are rotatably connected.

As shown in FIG. 2, the wiper blade 4 has a blade stay 7, a backing plate 8 and a blade rubber 9, and the blade stay 7 has a plurality of claws 7a provided on both sides in the longitudinal direction thereof. The backing plate 8 is gripped by and the blade rubber 9 is supported on the backing plate 8.

The blade rubber 9 is formed in a substantially triangular shape in section, a groove 10 along the longitudinal direction is formed on the side of the wide base end 9a thereof, and a narrow lip 12 is formed on the tip thereof. In addition, a pair of cavities 11 are formed below the groove 10. The hollow portion 11 maintains the elasticity of the blade rubber 9. And blade rubber 9
The blade rubber 9 is integrated with the blade stay 7 via the backing plate 8 by fitting the backing plate 8 into the groove 10.

Further, the wiper device 1 is provided with a vinyl hose 14 forming a flow passage for the washer liquid W. That is, as shown in FIG. 1, the hose 14 passes from the base end side 2 a of the wiper arm 2 through the inside of the wiper arm 2 and the inside of the wiper blade fitting 3 to connect the wiper blade fitting 3 and the wiper blade 4 (pin 6).
Section) and is branched into two left and right directions and routed to substantially both ends of the wiper blade 4.

The two hoses 14 which are branched in the left-right direction and arranged are four hoses 14a to 1a, respectively.
4d, 14e ~ 14h is branched, this hose 14a ~
As shown in FIG. 2, each tip portion of 14h is fitted into holes 8a to 8d (only holes 8c and 8d are shown in the figure) provided in the backing plate 8, and the nozzle opening 15a of the tip opening portion.
~ 15h is directed toward the blade rubber 9. The hoses 14 and 14a to 14h are fixed to the backing plate 8 and the blade stay 7 with an adhesive or the like as necessary.

As a result, a total of eight nozzle openings 15a to 15h are provided in the width direction of the wiper blade 4, that is, in the moving direction B and B of the wiper blade 4.
The inner diameters of the nozzle openings 15a to 15h are set so that the washer liquid W can be jetted at a predetermined pressure, and through the hoses 14a to 14h and the nozzle openings 15a to 15h,
As shown by the arrow C in FIG. 2, the washer liquid W is jetted at a predetermined pressure.

Next, the operation of the wiper device 1 will be described with reference to FIGS. First, as shown in FIG. 3, a pair of wiper devices 1 are provided below a windshield 17 of a vehicle body 16 of a passenger vehicle.
The motor 18 is connected to, for example, a control device 19 provided below the floor seat.

In the fender of the vehicle body 16 in front of the driver's seat, a washer liquid tank 20 forming a washer liquid supply means and a washer pump 21 (hereinafter simply referred to as pump 21
Is provided). The hoop 21 is electrically connected to the control device 19 and is also connected to one end of the hose 14. Furthermore, a wiper switch 22 is provided on the handle shaft of the driver's seat, and the wiper switch 22 is also electrically connected to the control device 19.

FIG. 4 is a basic block diagram showing this connection state. That is, the controller 19 is connected to the wiper switch 22 and the motor 18 and the pump 21 to which the wiper arm 2 is connected. The controller 19 is composed of, for example, a microcomputer, and controls the operation of the motor 18 and the pump 21 based on an input signal from the wiper switch 22.

FIG. 5 is a flow chart showing an example of the operation of the wiper device 1 by the control device 19, and this flow chart is executed according to the program stored in the ROM in the control device 19. This flowchart will be described below. First, when an ignition switch (not shown) is turned on to make the engine startable, the program is started (S100), and it is determined whether the wiper switch 22 is turned on (S101).

If "YES" in this determination, that is,
When the wiper switch 22 is turned on by the driver, the pump 21 operates (S102) and the motor 18 operates (S103). The operation of the pump 21 and the operation of the motor 18 are performed substantially at the same time, or the pump 21 operates slightly earlier than the motor 18.

Then, the washer liquid W is pumped up from the washer liquid tank 20 by the operation of the pump 21, and this washer liquid W is passed through the hoses 14 to the respective hoses 14
It is jetted toward the windshield 17 from the nozzle openings 15a to 15h of a to 14h. By the reciprocating rotation of the blade rubber 9 of the wiper blade 4 which rotates together with the injection of the washer liquid W, raindrops, dirt and the like adhering to the windshield 17 are removed.

At this time, the washer liquid W is injected from both sides in the moving direction of the blade rubber 9, that is, immediately before and immediately after the moving direction. Therefore, even if wind pressure is applied by the running of the vehicle, the washer liquid W is caused by the wind pressure. The washer liquid W will not be separated from the blade rubber 9 and will not flow upward, and the washer liquid W will be sprayed uniformly within the operating range of the wiper blade 9.

In the operating state of the wiper device 1,
It is determined whether the wiper switch 22 is off (S104).
If "YES" in this determination, that is, if the wiper switch 22 is turned off by the driver, the operation of the pump 21 is stopped (S105), and then it is determined whether a predetermined time has elapsed (S106). ) Will be done. The determination of the elapsed time is made based on, for example, the number of reciprocating operations n of the wiper device 1.

If the result of this determination is "YES", that is, if the wiper device 1 has operated a predetermined number of times n (for example, 2 to 3 times) after the pump 21 has stopped, the motor 18 is stopped (S107). . This step 105-
When the pump 21 is stopped by the 107 and the washer fluid W is no longer ejected, only the motor 18 is operated to perform the idle operation of rotating the wiper blade 9 to remove the washer fluid W adhering to the windshield 17.
Is pushed out of the operating range of the wiper device 1.

When the motor 18 stops, the wiper device 1
The operation is stopped and the ignition switch is turned off, so that a series of steps ends (S108).
Note that this flowchart is an example, and the elapsed time is determined based on the number of times n the wiper device 1 is operated in step 106, but the elapsed time may be directly determined based on a predetermined time, for example.

Thus, the wiper device 1 of the above embodiment
According to the description, the hoses 14, 14 for injecting the washer liquid W are
a to 14h are routed from the wiper arm 2 of the wiper device 1 to the wiper blade fitting 3 and the wiper blade 4, and the nozzle openings 15a to 1 of the hoses 14a to 14h.
Since a plurality of 5h is provided on both sides of the wiper blade 4 in the moving direction, the washer liquid W can be jetted immediately before and immediately after the wiper blade 4 is moved.

Further, since the nozzle openings 15a to 15h, which are the injection holes of the washer liquid W, are directed toward the blade rubber 9 direction, that is, the windshield 17 direction, the nozzles are not directed upward as in the conventional case, and the nozzle is not directed. Mouth 15a-1
The clogging due to the entry of dust or the like for 5 hours is prevented, and the washer liquid W is reliably ejected.

From these facts, the washer liquid W can be uniformly sprayed over the entire operating range of the wiper blade 4, and the washer liquid W is largely separated from the wiper blade 4 by the wind pressure during running of the vehicle. It becomes possible to remove raindrops, dirt, and the like adhering to the windshield 17 without flowing, and without paying attention to the timing of the operation of the wiper blade 4 and the injection of the washer liquid W. In particular, the nozzle port 15a-
By providing 15h on both sides of the wiper blade 4, the washer liquid W can be sprayed over a wide range, and dirt and the like can be removed more reliably.

Further, since the vinyl hose 14 is provided as a passage for the washer liquid W in the wiper device 1, the wiper device 1 itself can be constructed at a low cost, and the existing wiper device can be used. The wiper device 1 that can be attached relatively easily and has high versatility can be obtained. Further, since it is not necessary to provide the nozzle openings 15a to 15h on the hood 23 (see FIG. 3) of the vehicle body 16, the hood 23 is beautified and the appearance is improved, and the work of attaching the nozzle openings to the hood 23 is unnecessary. Therefore, the man-hour can be reduced.

Furthermore, since the washer fluid W is injected substantially at the same time as the operation of the wiper blade 4, it is possible to omit the conventional washer switch, which leads to cost reduction and easy operation by the driver himself. In addition, the windshield 17 is prevented from being scratched due to idle driving. Further, when the wiper blade 4 is stopped, the wiper blade 4 is idled a predetermined number of times,
The washer liquid W that has been sprayed and remains on the surface of the windshield 17 can be pushed out of the operating range of the wiper blade 4, the windshield 17 can be cleaned, and a good visual field for the driver can be obtained.

Although the wiper device 1 for the windshield 17 has been described in the above embodiment, the present invention is not limited to this and is also applied to the wiper device 1 for the rear glass 25 as shown in FIG. 6, for example. be able to.
Further, in the above-described embodiment, the case where the wiper blade 4 has the blade stay 7, the backing plate 8, the blade rubber 9 and the like has been described. However, for example, as shown by a two-dot chain line in FIG. It can be covered with the rubber boot 26 or can be applied to various other forms of wiper blades.

Further, in the above embodiment, four nozzle openings 15a to 15h are provided on both sides of the wiper blade 4 at approximately the same location, but, for example, a plurality of nozzle openings 15a to 15h may be alternated on both sides (in a zigzag pattern). ), And the number thereof can be increased or decreased according to the length of the wiper blade 4 and the like. Further, in the above embodiment, one hose 14
Although a plurality of hoses may be used, a plurality of hoses may be used, and the method of arranging and fixing the hoses is not limited to the adhesive, and a fixing band or the like may be used. Further, the shapes of the wiper arm 2, the wiper blade fitting 3, the wiper blade 4, the blade rubber 9 and the like, and their connecting structures are also examples, and various modifications can be made without departing from the scope of the invention. Needless to say.

[0036]

As described above in detail, in the vehicle wiper device according to the first aspect of the present invention, the washer liquid flow passage is formed in the wiper device, and the nozzle opening is provided at the tip of the flow passage. , The washer liquid can be sprayed uniformly over the entire operating range of the wiper blade, and the nozzle opening is directed diagonally downward, so clogging of the nozzle opening is prevented and a specified amount of washer fluid is injected. Therefore, it becomes possible to reliably remove raindrops, dirt, and the like attached to the glass.

Further, according to the wiper device of the second aspect, since the vinyl hose is used as the flow passage, the wiper device can be constructed at a low cost, and the existing wiper device can be used. It can be applied easily and its versatility is improved.

Further, according to the wiper device of the third aspect, the washer liquid is jetted almost at the same time as the operation of the wiper blade, so that the idle operation in the state where the washer liquid is not adhered to the glass is eliminated and the glass of the glass is removed. While scratches are prevented, at the time of stopping the wiper blade, after stopping the injection of the washer liquid, for example, an idle operation is performed 2 to 3 times, and after the washer liquid adhering to the glass is removed, the operation is stopped. The glass can be cleaned and good visibility can be maintained.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a vehicle wiper device according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a plan view of a vehicle using the wiper device.

FIG. 4 is a basic block diagram showing the system.

FIG. 5 is a flowchart for explaining an example of the operation.

FIG. 6 is a side view when the wiper device according to the present invention is used in another part of the vehicle.

[Explanation of symbols]

 1 ・ ・ ・ ・ ・ Wiper device 2 ・ ・ ・ ・ ・ ・ ・ Wiper arm 3 ・ ・ ・ ・ ・ ・ ・ Wiper blade metal fitting 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ Wiper blade 7・ ・ ・ ・ ・ ・ ・ Blade stay 7a ・ ・ ・ ・ ・ ・ Claws 8 ・ ・ ・ ・ ・ ・ ・ Backing plates 8a-8h ・ ・ ・ Hole 9 ・ ・ ・ ・..Blade rubber 10 ... Groove 14 ... Hose 14a to 14h ... Hose 15a to 15h ... Nozzle port 17 ... Windshield 18 ・ ・ ・ ・ ・ ・ Wiper motor 19 ・ ・ ・ ・ ・ ・ ・ ・ Control device 20 ・ ・ ・ ・ ・ ・ ・ ・ Washer liquid tank 21 ・ ・ ・ ・ ・ ・ Washer pump 22 ・ ・ ・・ ・ ・ ・ Wiper switch 25 ・ ・ ・ ・ ・ ・ Rear glass W ・ ・ ・ ・ ・ ・ ・ U Ssha solution

Claims (3)

[Claims] 1. A wiper device having a wiper arm that is rotated by the rotation of a motor, a wiper blade fitting connected to the tip of the wiper arm, and a wiper blade supported by the tip of the wiper blade fitting. A flow passage for the washer liquid is formed from the wiper arm to the wiper blade, and a plurality of nozzle openings provided at the tip of the flow passage for ejecting the washer liquid are provided on both sides in the moving direction of the wiper blade. A wiper device for a vehicle characterized by: 2. The flow passage is formed by a flexible hose, the base end of the hose is connected to a washer liquid supply means, and the hose end opening has a nozzle function. The wiper device for a vehicle according to claim 1. 3. The washer fluid injection is started substantially at the same time as the operation of the wiper blade, and is stopped before a predetermined time when the wiper blade is stopped.
Alternatively, the wiper device for a vehicle according to claim 2.