JP3771194B2 - Vehicle wiper device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle wiper device for wiping a windshield glass of a vehicle such as an automobile.
[0002]
[Prior art]
The wiper device for a vehicle wipes off deposits such as rain, fog, snow, and splashes from the front car, etc., attached to a windshield glass of a vehicle such as an automobile. A wiper blade that directly contacts the glass and a wiper blade are provided. And a wiper arm to be attached. The wiper arm is attached to the wiper shaft at its base end, and this wiper shaft is swung by a wiper motor. Accordingly, when the wiper motor is operated, the wiper blade swings on the windshield glass and the wiping operation is performed.
[0003]
Usually, a vehicle wiper device used in an automobile is provided with two wiper blades on the driver's seat side and the passenger seat side. As a wiping pattern of a vehicle wiper device provided with two wiper blades, a tandem type in which two wiper blades swing in the same direction is often used. However, in the tandem wiping pattern, the wiping range of the wiper blade centering on the wiper shaft is an arc, so it is difficult to set the wiping range at the upper corner of the windshield glass on the passenger seat side. is there.
[0004]
Therefore, for example, in the vehicle wiper device disclosed in Japanese Patent Laid-Open No. 2000-177539 and Japanese Patent Laid-Open No. 2000-255386, the wiper arm on the passenger seat side is supported by a so-called four-bar linkage mechanism, and the wiper blade on the passenger seat side is wiped The range extends to the upper corner of the windshield glass on the passenger side.
[0005]
In this case, the main link is connected to the base end of the wiper arm on the passenger seat side by the first pivot, and the sub link is connected to the second pivot at a predetermined distance from the base end. Are connected. On the other hand, a die-cast bracket that rotatably supports the wiper shaft on the passenger seat side is fixed to the vehicle, and the support shaft is rotatably supported at a predetermined distance from the wiper shaft on the passenger seat side. Has been. That is, the wiper shaft and the support shaft on the passenger seat side are held in a predetermined positional relationship by this bracket. The other end side of the main link is fixed to the wiper shaft on the passenger seat side so as to swing integrally with the wiper shaft, and the other end side of the sub link is connected to the support shaft. As a result, the wiper arm on the passenger seat side is a four-bar link type including a main link and a sub link, and the swinging motion of the wiper arm is an arc-shaped swinging motion and a reciprocating motion in the longitudinal direction of the wiper arm. The wiping range extends to the upper corner of the windshield glass on the passenger seat side.
[0006]
[Problems to be solved by the invention]
In a wiper device for a vehicle having a wiper arm supported by such a four-bar linkage mechanism, that is, a four-bar link type wiper arm, the bracket supports a wiper shaft and a support shaft that are provided at a predetermined distance. The outer shape becomes larger. In addition, since a larger force than that of a normal wiper device is input to the wiper shaft and the support shaft via the four-bar link, the bracket needs to have a predetermined strength. For this reason, the bracket is large and heavy, which hinders the reduction in size and weight of the vehicle wiper device.
[0007]
Since the bracket is constructed separately from the driver-side pivot holder that supports the wiper shaft on the driver's side, the positional relationship with the pivot holder on the passenger-side when the bracket is fixed to the vehicle Need to be adjusted. However, it is not easy to assemble a large and heavy bracket while adjusting its mounting position, making it difficult to assemble this vehicle wiper device to a vehicle.
[0008]
An object of the present invention is to reduce the size and weight of a vehicle wiper device.
[0009]
Another object of the present invention is to improve the assembly of a vehicle wiper device.
[0010]
[Means for Solving the Problems]
A vehicle wiper device according to the present invention includes a first wiper arm to which a first wiper blade is attached and a second wiper arm to which a second wiper blade is attached, and wipes a windshield glass provided on the vehicle. A first wiper shaft to which the first wiper arm is attached; A pivot holder on the driver's seat side that rotatably supports the first wiper shaft, a first pivot provided on the second wiper arm, and a main link having one end rotatably coupled to the first pivot. A second wiper shaft to which the other end of the main link is fixed, a pivot holder on the passenger seat that rotatably supports the second wiper shaft, and a predetermined distance from the first pivot. A second pivot provided, a sub-link having one end rotatably connected to the second pivot, and forming a four-bar link with the main link, and a spindle fixed to the other end of the sub-link; A sub-link pivot holder for rotatably supporting the support shaft; and a driving means for swinging the first wiper shaft and the second wiper shaft; the driver seat side pivot holder; Pivot on passenger side The sub-linking pivot holders and the driving means are connected to the frame members respectively Tohoruda It is characterized by that.
[0011]
The vehicle wiper device of the present invention includes: A pivot holder on the driver's seat that rotatably supports the first wiper shaft to which the first wiper arm is fixed, and a passenger seat side that rotatably supports the second wiper shaft to which the second wiper arm is fixed. A pivot holder, a frame member in which the driver seat side pivot holder and the passenger seat side pivot holder are connected to each other, and the first wiper shaft and the first wiper shaft fixed to the frame member and via a link mechanism A vehicle wiper device comprising drive means connected to and operated by a second wiper shaft for reciprocatingly rotating the first wiper shaft and the second wiper shaft, wherein the second wiper shaft A main link that rotates together with the support shaft that is rotatably supported by the sub-link pivot holder at a position separated from the second wiper shaft by a predetermined distance. A link, a first pivot for pivotally connecting the tip of the main link to the second wiper arm, and a tip of the sub-link on the second wiper arm at a position different from the first pivot. A second pivot shaft that is rotatably connected, and the sub-link pivot holder is held by the frame member in a predetermined positional relationship with the passenger seat side pivot holder. It is characterized by that.
[0012]
The vehicle wiper device of the present invention includes: The frame member is formed of a pipe member It is characterized by that.
[0013]
The vehicle wiper device of the present invention includes: The driving means is located at a substantially center between the first wiper shaft and the second wiper shaft. It is characterized by that.
[0014]
In the present invention, since the first wiper shaft, the second wiper shaft and the support shaft are supported by the frame member, the first wiper shaft, the second wiper shaft and the support shaft are supported by the frame member. It is held in a predetermined positional relationship. Therefore, there is no need to provide a bracket for supporting the second wiper shaft and the support shaft, and the vehicle wiper device can be made small and light.
[0015]
In the present invention, since the first wiper shaft, the second wiper shaft and the support shaft can be fixed to the frame member in advance, it is necessary to adjust the positional relationship between these members when mounted on the vehicle. Therefore, the assembling property of the vehicle wiper device to the vehicle can be improved.
[0016]
Furthermore, in the present invention, since the frame member is formed by the pipe member, the wiper device for a vehicle can be reduced in size and weight.
[0017]
Furthermore, in the present invention, since the driving means is fixed to the frame member at the approximate center between the first wiper shaft and the second wiper shaft, the vehicle wiper device can be made small and light. it can.
[0018]
Further, in the present invention, the bending portion is formed between the first wiper shaft and the second wiper shaft of the frame member, and the driving means is fixed to the bending portion. The wiper shaft, the second wiper shaft, and the driving means can be arranged in a straight line, and this vehicle wiper device can be reduced in size and weight.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0020]
FIG. 1 is an explanatory view showing an outline of a vehicle wiper device according to an embodiment of the present invention, and FIG. 2 is a front view showing details of the vehicle wiper device shown in FIG. 3 is a rear view of the vehicle wiper device shown in FIG. 2, and FIG. 4 is a front view showing details of a mounting portion of the AS-side wiper arm shown in FIG. 5 is an exploded perspective view of the AS side pivot holder and the sub-link pivot holder shown in FIG. 2, and FIG. 6 is a perspective view showing details of the power unit shown in FIG.
[0021]
As shown in FIG. 1, the vehicle wiper device 1 is disposed on the lower end side of a windshield 3 as a windshield glass provided in the vehicle 2. The vehicle wiper device 1 includes a wiper blade 4a on the driver seat side, ie, the DR side, as the first wiper blade that directly contacts the windshield 3, and a wiper blade 4b on the passenger seat side, ie, the AS side, as the second wiper blade. And have. The DR side wiper blade 4a is attached to the driver side, ie, the DR side wiper arm 5a, as the first wiper arm, and the AS side wiper blade 4b is attached to the passenger side, ie, the AS side wiper arm 5b, as the second wiper arm. It has been. The wiper blades 4a and 4b are in elastic contact with the windshield 3 by spring members (not shown) installed in the wiper arms 5a and 5b, respectively.
[0022]
As shown in FIGS. 2 and 3, the vehicle wiper device 1 includes a wiper shaft 6 a on the driver's seat side, that is, a DR side, as a first wiper shaft provided to be swingable with respect to the vehicle 2, and a second wiper shaft 6 a. A wiper shaft 6b and a support shaft 6c on the passenger seat side, that is, the AS side, are provided as the wiper shaft. Further, the vehicle wiper device 1 includes a pivot holder 7 on the driver side, that is, the DR side, a pivot holder 8 on the passenger side, that is, the AS side, and a pivot holder 9 for the sublink. , 9 are connected to each other by a pipe frame 10 as a frame member.
[0023]
The wiper shaft 6a on the DR side is rotatably supported by the pivot holder 7 on the DR side. A drive lever 11a having a predetermined lever ratio is fixed to the wiper shaft 6a on the DR side, and one end of an intermediate link 12 is connected to the drive lever 11a by a pin member 13. Further, an input link 15 is attached to the DR side pivot holder 7 by a pin member 14, and the other end of the intermediate link 12 is connected to a tip portion of the input link 15 by a pin member 16. As a result, when the input link 15 is swung, the DR-side wiper shaft 6a is swung through the intermediate link 12 and the drive lever 11a.
[0024]
The DR-side wiper arm 5a is fixed to the DR-side wiper shaft 6a at the base end thereof, and swings and moves integrally with the DR-side wiper shaft 6a. Accordingly, when the DR-side wiper shaft 6a swings, the DR-side wiper blade 4a is positioned between the upper inversion position on the windshield 3 and the lower inversion position located at the lower end of the windshield 3, that is, FIG. The arcuate wiping range 3a in the windshield 3 indicated by the alternate long and short dash line is oscillated.
[0025]
A pipe frame 10 is fixed to the DR side pivot holder 7. The pipe frame 10 is formed of a pipe member having an annular cross section, and an approximately middle portion in the longitudinal direction is formed into an S shape by forming two bent portions 10a and 10b by bending. The DR-side pivot holder 7 is welded and fixed to one end portion 10c of the pipe frame 10 at a fixing portion 7a formed to be engageable with the outer peripheral surface of the pipe frame 10. As a result, the DR-side wiper shaft 6 a is supported by the pipe frame 10 via the DR-side pivot holder 7.
[0026]
As described above, in the vehicle wiper device 1 of the present invention, the pipe frame 10 as the frame member is formed of a lightweight and inexpensive pipe member. Therefore, the vehicle wiper device 1 is reduced in size and weight. The cost of the vehicle wiper device 1 can be reduced.
[0027]
In the vehicle wiper device 1, the AS-side wiper arm 5 b is supported by a four-bar linkage mechanism 22 having a main link 20 and a sub-link 21 as shown in FIG. 4. Yes.
[0028]
The AS-side wiper shaft 6b is rotatably supported by the AS-side pivot holder 8. A drive lever 11b having a predetermined lever ratio is fixed to the AS-side wiper shaft 6b, and the AS-side wiper shaft 6b operates integrally with the drive lever 11b. Thus, when the drive lever 11b is swung, the AS-side wiper shaft 6b is swung.
[0029]
The AS-side wiper arm 5 b is attached to the AS-side wiper shaft 6 b via the main link 20. One end of the main link 20 is connected to the base end portion of the AS-side wiper arm 5b by a first pivot 23. The connecting portion between the AS-side wiper arm 5b and the main link 20 is covered with a cover 24 attached to the AS-side wiper arm 5b. The main link 20 is fixed to the AS-side wiper shaft 6b at the other end. As a result, the main link 20 swings integrally with the AS-side wiper shaft 6b, and this swinging motion is transmitted to the AS-side wiper arm 5b via the first pivot 23.
[0030]
As shown in FIG. 5, the AS-side pivot holder 8 is formed with a fixing portion 8a formed in a shape that can be engaged with the outer peripheral surface of the pipe frame 10 within a predetermined range, and formed toward the fixing portion 8a. Two attachment holes 8b and 8c are provided. Further, the pipe frame 10 has the same diameter as the mounting holes 8 and 8c in the straight portion 10e adjacent to the end portion 10d opposite to the end portion 10c to which the DR side pivot holder 7 of the bent portion 10b is fixed. Also, mounting holes 25 and 26 are provided at the same interval. The AS-side pivot holder 8 is fixed to the pipe frame 10 by inserting bolts 27 and 28 through the mounting holes 8b and 8c and the mounting holes 25 and 26 and tightening them with the nuts 29 and 30. Yes. As a result, the AS-side wiper shaft 6 b is supported by the pipe frame 10 via the AS-side pivot holder 8. That is, the AS-side wiper shaft 6b is held in a predetermined positional relationship by the pipe frame 10 with respect to the DR-side wiper shaft 6a.
[0031]
The support shaft 6c is rotatably supported by the sub-link pivot holder 9. A sub link 21 is connected to the AS-side wiper arm 5 b by a second pivot 31, and a support shaft 6 c is fixed to the other end of the sub link 21. That is, the support shaft 6 c is provided on the sub link 21. In this case, the second pivot 31 is provided at a predetermined distance from the first pivot 23 on the tip side of the AS wiper arm 5b.
[0032]
As a result, the AS-side wiper arm 5 b is supported by the four-link mechanism 22 having the main link 20 and the sublink 21. When the AS-side wiper shaft 6b swings, the AS-side wiper arm 5b swings at its base end portion by the main link 20 and its swing direction is controlled by the sub-link 21. Therefore, the swinging motion of the AS-side wiper arm 5b is obtained by superimposing the reciprocating motion in the longitudinal direction of the AS-side wiper arm 5b on the arc-shaped swinging motion around the AS-side wiper shaft 6b. In other words, the wiping range 3b of the AS-side wiper blade 4b is an arc-shaped wiping when the base end portion of the AS-side wiper arm 5b is directly fixed to the AS-side wiper shaft 6b, as shown by a one-dot chain line in FIG. Compared to the range 3c (indicated by a two-dot chain line in FIG. 1), the windshield 3 reaches the upper corner of the front passenger seat side.
[0033]
As shown in FIG. 5, the sub-link pivot holder 9 is provided with a coupling boss 9 a formed in a columnar shape having an outer diameter equivalent to the inner diameter of the pipe frame 10. The joint boss 9a is fitted to the end 10d of the pipe frame 10, and these joints are fixed by welding in this state. As a result, the support shaft 6 c is supported by the pipe frame 10 via the sub-link pivot holder 9.
That is, the support shaft 6c is held in a predetermined positional relationship with respect to the AS-side wiper shaft 6b by the pipe frame 10.
[0034]
As described above, in the vehicle wiper device 1 of the present invention, the DR-side wiper shaft 6a, the AS-side wiper shaft 6b, and the support shaft 6c are supported by the pipe frame 10, respectively. The positional relationship between the AS-side wiper shaft 6 b and the support shaft 6 c is held via the pipe frame 10. Therefore, it is not necessary to separately provide a bracket for supporting the AS-side wiper shaft 6b and the support shaft 6c, and the vehicle wiper device 1 can be reduced in size and weight.
[0035]
The vehicle wiper device 1 is provided with a power unit 40 as driving means for swinging each of the wiper shafts 6a and 6b. As shown in FIG. 6, the power unit 40 includes a wiper motor 41, a motor frame 42, and two connecting rods 43 and 44.
[0036]
The wiper motor 41 includes an electric motor 41a and a speed reducer 41b connected to the electric motor 41a, and is fixed to the motor frame 42 by a fastening member (not shown). The electric motor 41a is connected to a control device (not shown) via a connector portion 41c provided on the speed reducer 41b, and is controlled by this control device. In other words, a battery (not shown) mounted on the vehicle 2 and a wiper switch (not shown) provided in the vehicle compartment (not shown) are connected to the control device, and a control current corresponding to a command from the wiper switch is supplied to the electric motor 41a. To supply.
[0037]
The output of the electric motor 41a is inputted to the speed reducer 41b, and the speed reducer 41b decelerates the output of the electric motor 41a, that is, the rotation to a predetermined rotational speed and outputs it from the output shaft 41d. Yes. The output shaft 41d protrudes outside through a through hole 42a formed in the motor frame 42, and a crank arm 45 is fixed to the tip of the output shaft 41d. As a result, the crank arm 45 is rotationally driven by the wiper motor 41.
[0038]
The crank arm 45 is provided with a crank pin 46 at a predetermined distance from the output shaft 41 d, and two connecting rods 43, 44 are connected to the crank pin 46. The other end of the connecting rod 43 is connected to the input link 15 by a pin member 47, and the other end of the connecting rod 44 is connected to the drive lever 11 b by a pin member 48.
[0039]
With this structure, when the wiper motor 41 is operated, the output is transmitted to the input link 15 and the drive lever 11b via the crank arm 45 and the connecting rod 43, and the wiper shafts 6a and 6b are caused to swing. become.
[0040]
Here, the motor frame 42 includes a fixing portion 42b that engages with the outer peripheral surface of the pipe frame 10 at a linear portion 10f that is on the end portion 10c side where the DR-side pivot holder 7 side is fixed to the bending portion 10a of the pipe frame 10. The straight portion 10g between the bent portions 10a and 10b of the pipe frame 10 has a fixing portion 42c that engages with the outer peripheral surface of the pipe frame 10. The motor frame 42 is fixed to the pipe frame 10 by welding at these fixing portions 42b and 42c. That is, the motor frame 42 is fixed to the bent portion 10 a of the pipe frame 10. As a result, the power unit 40 is disposed substantially at the center between the DR-side wiper shaft 6a and the AS-side wiper shaft 6b.
[0041]
As described above, in the vehicle wiper device 1 of the present invention, the power unit 40 is arranged at substantially the center between the DR-side wiper shaft 6a and the AS-side wiper shaft 6b. The vehicle wiper device 1 can be reduced in size and weight.
[0042]
Further, in the vehicle wiper device of the present invention, the power unit is fixed to the bent portion formed between the DR side pivot holder and the AS side pivot holder of the pipe frame. And the vehicle wiper device can be made small and light. Further, since the power unit and the pivot holder are arranged in a substantially straight line, the distance between the crank pin 46 and each of the wiper shafts 6a and 6b is minimized. Therefore, the total length of each connecting rod 43, 44 is shortened, the vehicle wiper device is reduced in weight, and the cost thereof is reduced.
[0043]
In the vehicle wiper device 1 having such a structure, the three pivot arms 7, 8, 9 and the power unit 40 are fixed to the pipe frame 10 in advance before the vehicle wiper device 1 is attached to the vehicle 2. Will be converted. Then, after these members are fixed, the pipe frame 10 is illustrated via the pivot holders 7, 8, 9 and attachment portions 7b, 7c, 8d, 9b, 9c, 42d provided on the motor frame 42, respectively. It is fixed to the vehicle 2 by the fastening member that does not.
[0044]
As described above, in the vehicle wiper device 1 of the present invention, the three pivot arms 7, 8, 9 and the power unit 40 can be fixed to the pipe frame 10 in advance, so that when the pipe frame 10 is fixed to the vehicle 2, respectively. There is no need to adjust the positional relationship of the members, and the assembly of the vehicle wiper device 1 can be improved.
[0045]
It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above embodiment, the frame member is the pipe frame 10 using an annular cross-section pipe member. However, the present invention is not limited to this, and each of the frame members such as hollow members and solid members having other cross-sectional shapes is used. Any shape may be used as long as the pivot holders 7, 8, 9 and the power unit 40 can be connected to each other.
[0046]
In the above-described embodiment, only the AS-side wiper arm 5b is supported by the four-joint link mechanism 22 having the main link 20 and the sub-link 21. However, the DR-side wiper arm 5a is not limited to this. The wiper arm 5b may be supported by the same four-bar linkage mechanism. In this case, the sub-link pivot holder provided to support the support shaft provided in the sub-link newly connected to the DR-side wiper arm 5 a is also supported by the pipe frame 10.
[0047]
Further, in the above-described embodiment, two wiper arms, wiper shafts, and pivot holders are provided. However, the present invention is not limited to this, and three wiper arms, wiper shafts, and pivot holders may be provided. In this case, the pivot frame to be added is also fixed to the frame member. Further, the added wiper arm may be supported by a four-bar linkage mechanism. In this case, the added sub-link pivot holder is also supported by the pipe frame 10.
[0048]
【The invention's effect】
According to the present invention, since the first wiper shaft, the second wiper shaft, and the support shaft are held in a predetermined positional relationship by the frame member, the bracket that supports the second wiper shaft and the support shaft. This vehicle wiper device can be reduced in size and weight.
[0049]
In addition, according to the present invention, the first wiper shaft, the second wiper shaft, and the support shaft can be fixed to the frame member in advance, so that the positional relationship between these members is fixed when the frame member is fixed to the vehicle. There is no need for adjustment, and the ease of assembling the vehicle wiper device to the vehicle is improved.
[0050]
Furthermore, according to the present invention, since the frame member is formed of a hollow pipe member, the vehicle wiper device can be reduced in size and weight, and the cost can be reduced.
[0051]
Furthermore, according to the present invention, since the driving means is fixed to the frame member at substantially the center between the first wiper shaft and the second wiper shaft, the vehicle wiper device can be made small and light.
[0052]
Furthermore, according to the present invention, the first wiper shaft, the second wiper shaft, and the drive means can be arranged in a straight line by fixing the drive means to the frame member at the bent portion. The wiper device can be reduced in size and weight. In addition, since the driving means is arranged in a substantially straight line with respect to the first wiper shaft and the second wiper shaft, the total length of each connecting rod is shortened, the weight of the vehicle wiper device is reduced, and The cost will be reduced. Further, by fixing the driving means in the space formed in the bent portion, the vehicle wiper device can be made compact, and the mounting space can be reduced.
[0053]
Furthermore, according to the present invention, the first wiper shaft, the second wiper shaft, and the support shaft can be fixed to the frame member in advance, so that the assembly of the vehicle wiper device can be improved.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an outline of a vehicle wiper device according to an embodiment of the present invention;
FIG. 2 is a front view showing details of the vehicle wiper device shown in FIG. 1;
FIG. 3 is a rear view of the vehicle wiper device shown in FIG. 2;
4 is a front view showing details of a mounting portion of the AS-side wiper arm shown in FIG. 2; FIG.
FIG. 5 is an exploded perspective view of the AS side pivot holder and the sub-link pivot holder shown in FIG. 2;
6 is a perspective view showing details of the power unit shown in FIG. 2. FIG.
[Explanation of symbols]
1 Vehicle wiper device
2 Vehicle
3 Windshield
3a, 3b, 3c Wiping range
4a DR wiper blade
4b AS side wiper blade
5a DR side wiper arm
5b AS side wiper arm
6a DR side wiper shaft
6b AS side wiper shaft
6c spindle
7 DR side pivot holder
7a fixed part
7b, 7c mounting part
8 AS side pivot holder
8a fixed part
8b, 8c Mounting hole
8d Mounting part
9 Pivot holder for sub-link
9a Bonding boss
9b, 9c mounting part
10 Pipe frame
10a, 10b Bending part
10c, 10d end
10e, 10f, 10g Straight line part
11a, 11b Drive lever
12 Intermediate links
13,14 Pin member
15 input links
16 Pin member
20 Main link
21 Sublink
22 Four-bar linkage mechanism
23 First Axis
24 Cover
25, 26 mounting holes
27, 28 volts
29, 30 nut
31 Second Axis
40 power units
41 Wiper motor
41a Electric motor
41b reducer
41c connector
41d output shaft
42 Motor frame
42a Through hole
42b, 42c fixed part
42d Mounting part
43,44 Connecting rod
45 Crank arm
46 Crankpin
47, 48 Pin member

Claims (4)

A wiper device for a vehicle having a first wiper arm to which a first wiper blade is attached and a second wiper arm to which a second wiper blade is attached, for wiping a windshield glass provided in the vehicle,
A first wiper shaft to which the first wiper arm is attached;
A pivot holder on the driver's seat that rotatably supports the first wiper shaft;
A first pivot provided on the second wiper arm;
A main link having one end rotatably connected to the first pivot;
A second wiper shaft to which the other end of the main link is fixed;
A pivot holder on the passenger seat side that rotatably supports the second wiper shaft;
A second pivot provided at a predetermined distance from the first pivot;
A sub-link, one end of which is rotatably connected to the second pivot, and constitutes a four-bar link with the main link;
A spindle fixed to the other end of the sub-link;
A sub-link pivot holder for rotatably supporting the support shaft;
Drive means for swinging the first wiper shaft and the second wiper shaft;
The vehicle wiper device, wherein the driver seat side pivot holder, the passenger seat side pivot holder, the sub-link pivot holder, and the driving means are respectively connected to a frame member . A pivot holder on the driver's seat that rotatably supports the first wiper shaft to which the first wiper arm is fixed, and a passenger seat side that rotatably supports the second wiper shaft to which the second wiper arm is fixed. A pivot holder, a frame member in which the driver seat side pivot holder and the passenger seat side pivot holder are connected to each other, and the first wiper shaft and the first wiper shaft fixed to the frame member and via a link mechanism A vehicle wiper device comprising drive means connected to and operated by a second wiper shaft to reciprocately rotate the first wiper shaft and the second wiper shaft,
A main link that rotates together with the second wiper shaft;
A sublink that rotates together with a support shaft that is rotatably supported by a sublink pivot holder at a position spaced apart from the second wiper shaft by a predetermined distance;
A first pivot for pivotally connecting the tip of the main link to the second wiper arm;
A second pivot that rotatably connects the tip of the sublink to the second wiper arm at a position different from the first pivot;
The vehicle wiper device, wherein the sub-link pivot holder is held by the frame member in a predetermined positional relationship with the passenger seat side pivot holder . 3. The vehicle wiper device according to claim 1, wherein the frame member is formed of a pipe member . 4. The vehicle wiper device according to claim 1, wherein the driving unit is located at a substantially center between the first wiper shaft and the second wiper shaft. 5. Wiper device.

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