JP2002362324A - Vehicular wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a degree of freedom in installation of a vehicular wiper device. SOLUTION: A DR side reduction gear 9a having a DR side output part 29a and an AS side reduction gear 9b having an AS side output part 29b are provided in a wiper motor 6. A rotational motion of the DR side output part 29a is converted into a swinging motion of a DR side wiper arm 1a via a DR side linkage 30a, and a rotational motion of the AS side output part 29b is converted into a swinging motion of an AS side wiper arm 1b via an AS side linkage 30b.

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, and is particularly effective when applied to a wiper device having two wiper arms to which respective wiper blades are attached.

[0002]

2. Description of the Related Art A wiper device for a vehicle is mainly for wiping off attached matter such as rain, fog, snow, splashes of a preceding vehicle, etc. attached to a windshield glass, and a wiper blade and a wiper blade which directly contact the glass. A wiper arm to which the blade is attached.

A wiping pattern of a wiper device for a vehicle having two wiper blades is a tandem type in which two wiper blades swing in the same direction, or a swing center of a wiper arm is arranged on both left and right sides of a vehicle body. There is an opposite type in which each wiper blade swings between an upper inversion position on both left and right portions of the windshield and a lower inversion position on the center lower side.

In such a vehicle wiper device, 2
When one wiper arm is driven by one wiper motor, the rotational motion of the wiper motor is transmitted via a link mechanism.
This is converted into a swinging motion of each wiper arm. As the link mechanism, a drive lever that rotates integrally with the wiper shaft is provided on a wiper shaft to which the wiper arm is fixed, and these drive levers and a crank arm that is fixed to the output shaft of the wiper motor are respectively connected to a connecting rod. There is one configured by pin connection. In this case, two connecting rods are pin-connected to the crank arm, and these connecting rods are each pin-connected to the crank arm at the same fulcrum.

[0005] In the wiper device having the link mechanism having such a structure, when the two wiper blades are at the lower reversing position or the upper reversing position, the wiper motor is connected to the driving lever and the crank arm and to the connecting rod. The pin coupling portion and the output shaft of the wiper motor are arranged so as to be substantially on a straight line. This is to make the timings at which the respective wiper blades are at the lower turning position and the upper turning position the same.

[0006]

However, since the vehicle wiper device is mounted in the dash upper of the vehicle, there are many layout restrictions due to the shape and body design of the windshield glass. It may be difficult to dispose the wiper motor at a position satisfying the following. In this case, the position of the wiper motor is shifted to a position that does not satisfy the above condition, and the timings at which the respective wiper blades are at the lower reversing position and the upper reversing position are different, giving a sense of discomfort to the driver.
Also, if the position of the connecting portion between each connecting rod and the crank arm is shifted to eliminate this positional shift,
Each connecting rod interferes with each other's connecting portion, and the link mechanism is not established.

An object of the present invention is to improve the degree of freedom in installing a vehicle wiper device.

[0008]

SUMMARY OF THE INVENTION A wiper device for a vehicle according to the present invention includes a wiper arm on the driver's seat side to which a wiper blade on the driver's seat side is attached and a wiper arm on the passenger's side to which a wiper blade on the passenger's side is attached. A wiper motor having a driver-side output unit for driving the driver-side wiper arm, and a passenger-side output unit for driving the passenger-side wiper arm; and A driver side link mechanism provided between the side wiper arm and the driver side output section, and converting the rotational movement of the driver side output section into a swinging movement of the driver side wiper arm; It is provided between the wiper arm on the passenger seat side and the output part on the passenger seat side, and converts the rotational motion of the output part on the passenger seat side into a swinging motion of the wiper arm on the passenger seat side. And a's seat side of the link mechanism, and a wiper arm of the wiper arm and the passenger seat side of the driver's seat side, respectively, characterized in that swinging motion in a separate output.

In the vehicle wiper device according to the present invention, the wiper motor includes a motor main body, a driver-side reducer mounted on one end of the motor main body, and a passenger seat side mounted on the other end of the motor main body. The output part on the driver's seat side is provided on the output shaft of the reduction gear on the driver's seat side, and the output part on the passenger's seat side is provided on the output shaft of the reduction gear on the passenger's seat side. It is characterized by having been done.

[0010] In the wiper device for a vehicle according to the present invention, the wiper motor includes a motor main body and a speed reducer attached to the motor main body, and the driver-side output section is connected to one end of an output shaft of the speed reducer. And the output portion on the passenger seat side is provided at the other end of the output shaft of the speed reducer.

In the wiper device for a vehicle according to the present invention, the wiper motor includes a wiper shaft on the driver's seat side to which the wiper arm on the driver's seat side is fixed and a wiper shaft on the passenger's seat side to which the wiper arm on the passenger side is fixed. It is characterized by being located at substantially the center.

In the wiper device for a vehicle according to the present invention, each of the wiper blades swings between an upper inversion position on both left and right portions of the windshield glass and a lower inversion position on the lower center of the windshield glass. It is characterized by.

In the present invention, the wiper arm on the driver's seat side and the wiper arm on the passenger's seat side are made to swing by separate output portions and link mechanisms, respectively, so that the wiper arm is independent of the installation position of the wiper motor. Since the reversal timing of each wiper blade can be made the same, the degree of freedom of installation of the vehicle wiper device can be improved.

[0014]

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

FIG. 1 is a front view schematically showing a vehicle wiper device according to an embodiment of the present invention. Also, FIG.
FIG. 3 is a front view showing details of a wiper motor of the vehicle wiper device shown in FIG. 1;
It is sectional drawing which shows the -A cross section.

This vehicle wiper device has a wiper arm 1a on the driver's seat side, that is, the DR side, and a wiper arm 1b on the passenger seat side, that is, the AS side. The driver's seat side, that is, the DR side wiper blade 2a is attached to the DR side wiper arm 1a, and the passenger side, ie, the AS side wiper blade 2b is attached to the AS side wiper arm 1b. Each of the wiper blades 2a and 2b is configured to resiliently contact the windshield 3 as a windshield glass by a spring member or the like (not shown) provided in the wiper arm.

The wiper blades 2a, 2b are arranged in a wiping range 3a, 3b between an upper turning position on the windshield 3 and a lower turning position located at the lower end of the windshield 3.
Are respectively oscillated in the same direction, that is, the wiping pattern of the vehicle wiper device is of a tandem type.

A wiper shaft 4a on the driver's seat side, ie, the DR side, and a wiper shaft 4b on the passenger seat side, ie, the AS side, are rotatably supported on a vehicle body (not shown), and the respective wiper arms 1a, 1b are provided at their base ends. Are fixed to the wiper shafts 4a and 4b, respectively.

The dash panel 5 of the vehicle body (not shown) includes:
The wiper motor 6 is located substantially at the center of the wiper shafts 4a and 4b.
Is attached. As shown in FIGS. 2 and 3, the wiper motor 6 includes a motor body 7 and a motor body 7.
A driver's seat side, that is, a DR side reducer 9a attached to one end of the motor body by a fastening member 8, and a passenger seat side, ie, an AS side reducer 9b, attached to the other end of the motor body 7 by a fastening member 8. are doing.

The motor body 7 has a cylindrical motor housing 7a, and two permanent magnets 10 and 11 having different magnetic poles facing each other are provided on the inner peripheral surface of the motor housing 7a. Has been fixed. Further, inside the motor housing 7a, there are provided an armature shaft 12a, a commutator 12b pivotally mounted on the armature shaft 12a, and an armature core 12d to which an armature coil 12c connected to the commutator 12b is fixed. An amateur 12 is provided.
The armature 12 is rotatable within the motor housing 7a by the armature shaft 12a being supported by self-centering bearings 15, 16 provided on bearing fixing portions 13, 14 of the respective speed reducers 9a, 9b. It has become.

A brush holder stay 18 made of resin is fixed to a brush holder stay fixing portion 17 provided on the DR side reduction gear 9a. This brush holder stay 18
Are mounted with two brush holders 20 each of which supports a brush 19 movably in the axial direction. These brushes 19 are attached to the outer peripheral surface of the commutator 12b by springs 21 provided inside the brush holder 20. The sliding contact is made in a state of being urged. The current supplied from the power supply (not shown) to the brush 19 is supplied to the armature coil 12c via the commutator 12b.

The gear chamber 2 provided on the DR side reduction gear 9a
One end of the armature shaft 12a protrudes from 2a, and a worm 23a is formed on an outer peripheral surface of a portion of the armature shaft 12a protruding into the gear chamber 22a. The worm 23a is provided inside the gear chamber 22a.
A worm wheel 24a is provided which meshes with the worm wheel 25a, and these form a worm gear 25a. Further, the worm wheel 24a is provided with a pinion gear 26a integrally and coaxially with the worm wheel 24a, and the pinion gear 26a is connected to the reduction gear 9 on the DR side.
and a driving gear 28a that rotates integrally with the output shaft 27a. Further, the tip of the output shaft 27a of the DR side reduction gear 9a protrudes outward from the gear chamber 22a, and the tip of the output shaft 27a has a driver seat side for driving the DR side wiper arm 1a, that is, the DR side output section. 29a are provided. Similarly, the other end of the armature shaft 12a protrudes from a gear chamber 22b provided in the reduction gear 9b on the AS side, and the gear chamber 22b of the armature shaft 12a protrudes.
A worm 23b having a screw direction opposite to that of the worm 23a is formed on the outer peripheral surface of the portion projecting from the worm 23a.
A worm wheel 24b that meshes with the worm 23b is provided inside the gear chamber 22b, and forms a worm gear 25b. further,
The worm wheel 24b includes the worm wheel 2
A pinion gear 26b is provided integrally and coaxially with the gear 4b, and the pinion gear 26b is meshed with a drive gear 28b that rotates integrally with the output shaft 27b of the reduction gear 9b on the AS side. Also, the output shaft 27 of the AS-side reduction gear 9b
The leading end of b projects outward from the gear chamber 22b, and the leading end is provided with an output section 29b on the passenger seat side for driving the wiper arm 1b on the AS side, that is, on the AS side. Therefore, when the motor body 7 rotates, the rotational force is transmitted to the output unit 29a on the DR side and the output unit 29b on the AS side via the worm gears 25a and 25b, the pinion gears 26a and 26b, and the drive gears 28a and 28b. It will be rotated in the opposite direction. When the amateur shaft 12a rotates, each worm 2
3a and 23b are worm wheels 24a and 24, respectively.
b receives a thrust force acting in the axial direction of the amateur shaft 12a. At this time, since the screw directions of the worms 23a and 23b are formed in opposite directions, the thrust forces act in opposite directions. , Acts as a force for suppressing the movement of the amateur shaft 12a in the thrust direction. Accordingly, a thrust bearing or the like for suppressing the movement of the amateur shaft 12a in the thrust direction can be omitted. In the present embodiment, each of the speed reducers 9a and 9b is a two-stage speed reducer using a worm gear, a pinion gear, and a drive gear. However, the present invention is not limited to this. A mechanism may be used.

In order to convert the rotational movement of the output section 29a on the DR side into the swinging movement of the wiper arm 1a on the DR side,
A driver side, that is, a link mechanism 30a on the DR side is provided between the output unit 29a on the side and the wiper arm 1a on the DR side. A link mechanism 30b on the passenger seat side, that is, on the AS side, is provided between the AS output section 29b and the AS-side wiper arm 1b in order to convert the movement into motion.

The DR side link mechanism 30a is connected to the DR side crank arm 31a fixed to the DR side output portion 29a.
Is fixed to the wiper shaft 4a on the DR side.
a drive lever 32a that rotates integrally with
A four-bar mechanism is constituted by a DR-side connecting rod 35a pin-connected to connecting portions 33a and 34a provided on the drive crank arm 31a and the drive lever 32a. Therefore, the wiper blade 2a on the DR side
Is in the lower inversion position or the upper inversion position, the coupling unit 33a, the coupling unit 34a, and the output unit 29a on the DR side are positioned substantially on a straight line. Similarly, the AS side link mechanism 30b includes an AS side crank arm 31b fixed to the AS side output portion 29b, and an AS side wiper shaft 4
b, and a drive lever 32b that rotates integrally with the wiper shaft 4b, and a crank arm 31 on the AS side, respectively.
b and a coupling portion 33b provided on the drive lever 32b,
It has a four-rod mechanism constituted by an AS-side connecting rod 35b pin-connected to 34b. Accordingly, when the AS-side wiper blade 2b is at the lower turning position and the upper turning position, the connecting portions 33b and 34
b and the output section 29b on the AS side are located substantially on a straight line.

Next, the operation of the wiper device will be described.

FIGS. 4 (a) to 4 (d) are explanatory views showing the operation state of the link mechanism of the vehicle wiper device shown in FIG. 1, and FIGS. 5 (a) to 5 (d) are shown in FIG. FIG. 5 is an explanatory diagram illustrating an operation state of a wiper arm and a wiper blade of the vehicle wiper device.

When the wiper switch (not shown) is turned off, each of the crank arms 31
As shown in FIG. 4A, the positions of the drive levers a and 31b and the drive levers 32a and 32b are substantially the same in the DR side link mechanism 30a. To be on the line,
In the side link mechanism 30b, the coupling portion 33b, the coupling portion 34b, and the output portion 29b on the AS side are positioned substantially on a straight line. At this time, the respective wiper blades 2a and 2b are, as shown in FIG.
Each is in a stopped state at the lower inversion position.

When a wiper switch (not shown) is turned on from this state, the respective output units 29a and 29b start rotating, and as shown in FIGS. 4 (b) and 5 (b), While the arms 31a and 31b rotate in the opposite directions as indicated by arrows in the figure, the respective drive levers 32a and 32b are operated, and the respective wiper blades 2a and 2b are operated from the lower inverted position to the upper inverted position. Will be.

Then, each of the crank arms 31a, 31b
FIG. 4C shows the positions of the drive levers 32a and 32b.
That is, in the DR side link mechanism 30a, the coupling portion 33a, the coupling portion 34a, and the DR side output portion 29
5A is again substantially on a straight line, and in the AS side link mechanism 30b, when the coupling portion 33b, the coupling portion 34b, and the AS side output portion 29b are again substantially on a straight line, FIG. As shown in (c), each of the wiper blades 2a and 2b is at the upper turning position. Then, as the respective crank arms 31a and 31b further rotate, the respective wiper blades 2a and 2b move from the upper reversing position to the lower reversing position as shown in FIGS. 4 (d) and 5 (d). In operation, FIGS. 4 (a) and 5 (a)
Will return to the state shown in FIG. Thereafter, by repeating the same operation, the respective wiper blades 2a, 2b
Swings between the lower inversion position and the upper inversion position.

FIG. 6 is a front view showing a wiper motor as a comparative example of the wiper motor shown in FIG.
FIGS. 7A and 7B are explanatory diagrams showing the effect of the position of the wiper motor on the positions of the crank arm and the drive lever in the vehicle wiper device using the wiper motor shown in FIG.

The wiper motor 36 shown in FIG. 6 has a motor main body 37 and a speed reducer 38 attached to one end of the motor main body 37. The output section 39 of the wiper motor 36 has an output shaft 39 of the speed reducer 38. It is provided in. Therefore, the DR-side connecting rod 35a pin-connected to the connecting portion 34a provided on the drive lever 32a and the AS pin connected to the connecting portion 34b provided on the drive lever 32b.
The connecting rod 35b on the side is pin-connected to the connecting portion 41 of the crank arm 40 attached to the output portion 39 of the wiper motor 36 at the same fulcrum. Therefore, in order to make the timings at which the respective wiper blades 2a and 2b are at the lower reversal position and the upper reversal position the same, as shown in FIG. When the upper inversion position is reached, the coupling units 34a and 34b and the output unit 39
It is necessary to dispose the wiper motor 36 such that the wiper motor 36 is positioned substantially on a straight line. However, since the wiper motor 36 is mounted in the dash upper of the vehicle (not shown), there are many layout restrictions due to the shape of the windshield 3 and the body design, and it is difficult to arrange the wiper motor 36 at a position satisfying the above conditions. It may be. for that reason,
For example, as shown in FIG. 7B, a case where the position of the wiper motor 36 is shifted from the position of the wiper motor 36 shown in FIG. When the wiper blade 2a is at the lower turning position or the upper turning position, the connecting portions 34a, 4
1 and the output portion 39 are positioned substantially on a straight line, and the coupling portion 3 is located when the wiper blade 2b on the AS side is at the lower inversion position or the upper inversion position.
4b, 41 and the output section 39 are shifted by an angle α from the position of the crank arm 40 at which the output section 39 is positioned substantially on a straight line. Therefore, each wiper blade 2a, 2
The timing at which b becomes the lower reversal position and the upper reversal position will be different, and if the positions where the connecting rods 35a, 35b and the crank arm 40 are coupled to each other are shifted in order to eliminate this positional deviation, The respective linking rods 35a and 35b interfere with each other's joints, and the link mechanism is not established.

On the other hand, in the wiper device for a vehicle according to the present invention, the wiper arm 1a on the DR side and the wiper arm 1b on the AS side are oscillated by the output units 29a and 29b, respectively. As shown in FIG. 1, the position of each wiper blade 2
When a and 2b are at the lower inversion position or the upper inversion position, the coupling units 34a and 34b and the output unit 29a on the DR side and A
Even when the output section 29b on the S side is displaced upward by a dimension L from the position where the output section 29b is substantially on a straight line, the timing at which the respective wiper blades 2a and 2b are at the upper inversion position and the lower inversion position is individually set. be able to.

As described above, in the vehicle wiper device of the present invention, the timing at which the respective wiper blades 2a and 2b are at the lower reversing position and the upper reversing position can be the same regardless of the installation position of the wiper motor 6. Thus, the degree of freedom in installing the vehicle wiper device of the present invention can be improved.

Each of the crank arms 31a,
Only one connecting rod 35a, 35b is connected to each of the connecting rods 31b, and as shown in the comparative example shown in FIG.
Since the two a and 35b are not connected in an overlapping state, the thickness H of the wiper motor 6 can be reduced, and the degree of freedom of installation of the vehicle wiper device of the present invention can be further improved.

FIG. 8 is a front view showing a modification of the vehicle wiper device shown in FIG. 1, and FIG. 9 is a front view showing details of the wiper motor of the vehicle wiper device shown in FIG. 10 (a) to 10 (d) are explanatory views showing the operating state of the link mechanism of the vehicle wiper device shown in FIG.
1 (a) to 1 (d) are explanatory views showing operating states of a wiper arm and a wiper blade of the vehicle wiper device shown in FIG.

The wiper device for a vehicle shown in FIG. 8 has the same basic structure as the wiper device for a vehicle shown in FIG. 1, but its wiping pattern is different from that of the respective wiper blades 2a and 2a.
b is a so-called opposite type that swings between an upper inversion position on both left and right portions of the windshield 3 and a lower inversion position on the lower center side of the windshield 3.

For this reason, the wiper shaft 4a on the DR side and the wiper shaft 4b on the AS side are respectively disposed on the left and right sides of the vehicle body (not shown). In addition, in order to reverse the operating direction of the wiper blade 2b on the AS side in accordance with this,
The AS-side crank arm 31b attached to the AS-side output section 29b is attached to the AS-side output section 29b with a phase difference of 180 ° from the case shown in FIG.

Accordingly, when the wiper switch (not shown) is turned off, the vehicle wiper device has the crank arms 31a and 31b and the drive levers 32a and 32b.
As shown in FIG. 10 (a), the position of b is such that in the DR side link mechanism 30a, the coupling portion 33a, the coupling portion 34a, and the DR side output portion 29a are positioned substantially on a straight line. In the link mechanism 30b on the AS side, the coupling section 33b, the coupling section 34b, and the output section 29b on the AS side are positioned substantially on a straight line. At this time, the respective wiper blades 2a and 2b
As shown in (a), the wiper blade 2a on the DR side
It is stopped in a state of being lined up close to the S-side wiper blade 2b at the lower inversion position with the upper side facing the wiper blade 2b.

When a wiper switch (not shown) is turned on from this state, the respective output units 29a and 29b start rotating, and as shown in FIGS. 10 (b) and 11 (b), Arms 31a, 31b
Actuates the respective drive levers 32a, 32b while rotating in the opposite directions as indicated by the arrows in the figure, thereby operating the respective wiper blades 2a, 2b from the lower inversion position to the upper inversion position.

Then, each of the crank arms 31a, 31b
And the positions of the drive levers 32a and 32b are shown in FIG.
In the position shown in (c), that is, in the link mechanism 30a on the DR side, the coupling section 33a, the coupling section 34a, and the output section 29a on the DR side are again positioned substantially in a straight line. Are the connecting portion 33b and the connecting portion 3
When the output side 4b and the output unit 29b on the AS side are again positioned substantially on a straight line, the respective wiper blades 2a and 2b are in the upper inverted position as shown in FIG. 11C. Then, as the respective crank arms 31a and 31b further rotate, the respective wiper blades 2a and 2b move from the upper reversing position to the lower reversing position as shown in FIGS. 10 (d) and 11 (d). The operation returns to the state shown in FIGS. 10A and 11A. Since then
By repeating the same operation, each of the wiper blades 2a and 2b swings between the lower turning position and the upper turning position.

As described above, in the vehicle wiper device shown in FIG. 8, as in the case shown in FIG. 1, the DR-side wiper arm 1a is swung by the DR-side output portion 29a via the DR-side link mechanism 30a. The wiper arm 1b on the AS side is oscillated by the output section 29b on the AS side via the link mechanism 30b on the AS side, so that the wiper blades 2a and 2b are turned upside down and down. The position timing can be set individually. Accordingly, regardless of the installation position of the wiper motor 6, the timings at which the respective wiper blades 2a and 2b are at the lower reversing position and the upper reversing position can be made the same, so that the degree of freedom in installing the vehicle wiper device of the present invention is improved. Can be improved.

In this case, even when there are many layout restrictions due to the shape of the windshield 3 and the body design, a wiper device for a vehicle having an opposite wiping pattern can be constituted by one wiper motor 6. Thus, the cost of the vehicle wiper device having the opposite wiping pattern can be reduced.

The wiping pattern of the wiper device for a vehicle shown in FIG. 8 is of an opposite type. Glass 3
The wiping pattern may be a panta-type wiping pattern that swings between a reversing position located on both right and left sides of the wiping pattern.

FIG. 12 is a front view showing a modified example of the wiper motor shown in FIG. 9, and FIG. 13 is an explanatory view schematically showing a link mechanism using the wiper motor shown in FIG.

The wiper motor 42 shown in FIG. 12 includes a motor body 43 and a speed reducer 4 attached to the motor body 43.
The output shaft 45 of the speed reducer 44 penetrates the casing 44a of the speed reducer 44, one end of which is located at the upper part of the speed reducer 44 in the figure, and the other end thereof is a view of the speed reducer 44. Each protrudes from the middle and lower parts. A portion of the output shaft 45 protruding from the upper portion of the speed reducer 44 in the figure is a DR side output portion 29a, and the DR side output portion 29a is a DR side link mechanism 30a constituting the DR side link mechanism 30a. A crank arm 31a is attached. Also, the output shaft 45
The portion of the speed reducer 44 protruding from the lower part in the figure is an AS-side output portion 29b, and the AS-side crank arm 31b constituting the AS-side link mechanism 30b is attached to the AS-side output portion 29b. Have been. Then, as shown in FIG. 13, these link mechanisms 30a and 30b
R-side wiper blade 2a and AS-side wiper blade 2
b is in the lower inversion position or the upper inversion position, the combining unit 33a, the combining unit 34a, and the DR side output unit 29
a are positioned substantially on a straight line, and the coupling portion 33b and the coupling portion 34
b and the output section 29b on the AS side are positioned substantially on a straight line.

As described above, the output shaft 29 protruding from both ends of the speed reducer 44 is provided at one end with the output section 29a on the DR side, the other end is provided with the output section 29b on the AS side, and the wiper arm 1a on the DR side is connected to the DR side. Of the AS-side wiper arm 1 by the DR-side output portion 29a through the link mechanism 30a.
b is oscillated by the output section 29b on the AS side via the link mechanism 30b on the AS side, so that the timings at which the respective wiper blades 2a and 2b are at the upper reversing position and the lower reversing position are individually set. can do.
Therefore, regardless of the installation position of the wiper motor 42, the timings at which the respective wiper blades 2a and 2b are at the lower reversing position and the upper reversing position can be made the same. Can be improved. The wiper motor 4 shown in FIG.
2 and link mechanisms 30a, 30 shown in FIG.
0b shows the case where the wiping pattern is of the opposite type, however, the present invention is not limited to this, and the arrangement of one of the crank arms may be changed to a tandem type of wiping pattern.

The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the scope of the present invention. For example, in the present embodiment, the installation position of the wiper motor is such that when the respective wiper blades 2a, 2b are at the lower inversion position or the upper inversion position, the coupling units 34a, 34b, the output unit 29a on the DR side and the AS Although the output unit 29b on the side is located above the position where it is substantially on a straight line, it is not limited to this, and may be located below in the figure.

[0048]

According to the present invention, the wiper arm on the driver's seat side and the wiper arm on the passenger's seat side are caused to swing by separate output portions and link mechanisms, respectively, regardless of the installation position of the wiper motor. Since the timings at which the respective wiper blades are at the lower reversing position and the upper reversing position can be made the same, the degree of freedom in installing the vehicle wiper device can be improved.

Further, since only one connecting rod is connected to each crank arm and the two connecting rods are not connected in an overlapping state, the thickness of the wiper motor can be reduced. The degree of freedom of installation of the vehicle wiper device can be further improved.

Further, even when there are many layout restrictions due to the shape and body design of the windshield glass, a wiper device for a vehicle having an opposite wiping pattern can be constituted by one wiper motor. The cost of the vehicle wiper device having the wiping pattern can be reduced.

Further, in the opposite type wiper device, the motors provided at the ends of the respective wiper arms can be driven by one motor, and control is performed using two motors using a control circuit. On the other hand, by using two links with one motor, a control circuit becomes unnecessary, and cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a front view showing details of a wiper motor of the vehicle wiper device shown in FIG. 1;

FIG. 3 is a sectional view showing an AA section of the wiper motor shown in FIG. 2;

4 (a) to 4 (d) are explanatory views showing operating states of a link mechanism of the vehicle wiper device shown in FIG.

5 (a) to 5 (d) are explanatory views showing operating states of a wiper arm and a wiper blade of the vehicle wiper device shown in FIG.

FIG. 6 is a front view showing a wiper motor as a comparative example of the wiper motor shown in FIG.

7 (a) and 7 (b) are explanatory diagrams showing the influence of the position of the wiper motor on the positions of the crank arm and the drive lever in the vehicle wiper device using the wiper motor shown in FIG.

FIG. 8 is a front view showing a modification of the vehicle wiper device shown in FIG.

FIG. 9 is a front view showing details of a wiper motor of the vehicle wiper device shown in FIG. 8;

10 (a) to 10 (d) are explanatory views showing an operation state of a link mechanism of the vehicle wiper device shown in FIG.

11 (a) to 11 (d) are explanatory views showing operating states of a wiper arm and a wiper blade of the vehicle wiper device shown in FIG.

FIG. 12 is a front view showing a modification of the wiper motor shown in FIG.

FIG. 13 is an explanatory diagram schematically showing a link mechanism when the wiper motor shown in FIG. 12 is used.

[Description of Signs] 1a DR-side wiper arm 1b AS-side wiper arm 2a DR-side wiper blade 2b AS-side wiper blade 3 Windshield 3a, 3b Wiping range 4a DR-side wiper shaft 4b AS-side wiper shaft 5 Dash panel Reference Signs List 6 Wiper motor 7 Motor body 7a Motor housing 8 Fastening member 9a DR side reducer 9b AS side reducer 10,11 Permanent magnet 12 Amateur 12a Amateur shaft 12b Commutator 12c Amateur coil 12d Amateur core 13,14 Bearing fixing part 15, 16 Bearing 17 Brush holder stay fixing portion 18 Brush holder stay 19 Brush 20 Brush holder 21 Spring 22a, 22b Gear chamber 23a, 23b Worm 24a, 24b Worm wheel 25a, 25b Worm Gears 26a, 26b Pinion gears 27a, 27b Output shafts 28a, 28b Drive gears 29a DR side output section 29b AS side output section 30a DR side link mechanism 30b AS side link mechanism 31a DR side crank arm 31b AS side crank Arms 32a, 32b Drive levers 33a, 34a Coupling section 33b, 34b Coupling section 35a DR side connection rod 35b AS side connection rod 36 Wiper motor 37 Motor body 38 Reduction gear 39 Output section 40 Crank arm 41 Connection section 42 Wiper motor 43 Motor body 44 Reducer 44a Casing 45 Output shaft L Dimension α Angle H Thickness

Claims (5)

[Claims] 1. A wiper device for a vehicle, comprising: a driver-side wiper arm to which a driver-side wiper blade is attached; and a passenger-side wiper arm to which a passenger-side wiper blade is attached. An output unit on the driver's seat side that drives the wiper arm of the driver, a wiper motor having an output unit on the passenger seat side that drives the wiper arm on the passenger seat side, and a wiper arm on the driver's seat side and an output unit on the driver's seat side. A driver-side link mechanism that is provided between the driver seat side and converts the rotational movement of the driver-side output unit into a swinging motion of the driver-side wiper arm; and the wiper arm on the passenger seat side and the output on the passenger seat side. And a link mechanism on the passenger seat side for converting the rotational movement of the output section on the passenger seat side into a swinging motion of the wiper arm on the passenger seat side, wherein the driver seat Wherein the wiper arm of a passenger side wiper arm, each individual vehicle wiper apparatus characterized by swinging motion at the output. 2. The vehicle wiper device according to claim 1, wherein the wiper motor is mounted on a motor body, a driver side reduction gear mounted on one end of the motor body, and mounted on the other end of the motor body. And a driver's seat side speed reducer, wherein the driver's seat side output unit is provided on an output shaft of the driver's seat side speed reducer, and the passenger's seat side output unit is a passenger seat side speed reducer. A vehicle wiper device provided on an output shaft. 3. The wiper device for a vehicle according to claim 1, wherein the wiper motor has a motor main body and a speed reducer attached to the motor main body, and the output section on the driver's seat side includes the motor main body. A wiper device for a vehicle, wherein the wiper device is provided at one end of an output shaft, and the output portion on the passenger seat side is provided at the other end of the output shaft of the speed reducer. 4. The wiper device according to claim 1, wherein the wiper motor has a wiper shaft on a driver seat side to which a wiper arm on the driver seat side is fixed, and a wiper arm on the passenger seat side. A wiper device for a vehicle, wherein the wiper device is located substantially at the center of the wiper shaft on the passenger seat side to which the vehicle is fixed. 5. The wiper device for a vehicle according to claim 1, wherein each of the wiper blades is located at an upper inversion position on both left and right portions of the windshield glass and at a lower center of the windshield glass. A vehicle wiper device that swings between a lower turning position and a lower turning position.