WO2012026439A1

WO2012026439A1 - Wiper device

Info

Publication number: WO2012026439A1
Application number: PCT/JP2011/068906
Authority: WO
Inventors: 山田　耕治
Original assignee: 株式会社ミツバ
Priority date: 2010-08-23
Filing date: 2011-08-23
Publication date: 2012-03-01
Also published as: CN103140390B; BR112013004211A2; JPWO2012026439A1; CN103140390A; DE112011102795B4; JP5706426B2; BR112013004211B1; DE112011102795T5

Abstract

An AS-side pivot holder (17), formed as a solid rod, is provided on one side in the longitudinal direction with a frame fixing part (17b) to which a frame member (24) is fixed, and on the other side in the longitudinal direction with a motor fixing part (17d) to which a gear case (28a) of a wiper motor (26) is fixed. Between the frame fixing part (17b) and the motor fixing part (17d), a support part (17c) is provided which rotatably supports an AS-side pivot shaft (15b) such that said pivot shaft extends in the shorter direction of the AS-side pivot holder (17). By this means, the wiper motor (26) can be fixed to the motor fixing part (17d) without brackets, and a compact, light-weight and bracket-less wiper device (14) can be achieved with improved layout properties and assembly properties.

Description

Wiper device

The present invention relates to a wiper device including a pivot shaft to which a wiper arm is fixed and an electric motor that swings and drives the pivot shaft.

Conventionally, a wiper device is mounted on a vehicle such as an automobile. The wiper device swings a wiper arm on which a wiper blade is mounted to wipe rainwater, dust, and the like attached to a windshield. The wiper device includes a pivot shaft to which a wiper arm is fixed, and an electric motor that swings and drives the pivot shaft. The wiper device rotates the electric motor by operating an operation switch in the vehicle interior, so that the wiper device is rotated via the pivot shaft. The blade swings.

A wiper device provided with a plurality of wiper arms, such as a tandem type wiper device, is provided with a plurality of pivot shafts corresponding to each wiper arm. A link mechanism is provided between each pivot shaft and the electric motor. The link mechanism converts the rotational motion of the electric motor into a swing motion, and swings each pivot shaft in synchronization. As such a wiper device, a plurality of pivot holders that rotatably support each pivot shaft are fixed to both ends of a pipe-shaped frame member, and an electric motor is fixed to the frame member via a bracket. A so-called frame-integrated modular wiper device is known.

As such a modular wiper device, for example, techniques described in Patent Document 1 and Patent Document 2 are known. The wiper device described in Patent Document 1 includes a pair of pivot holders connected to each other by a pipe frame (frame member), and a bracket is fixed near one pivot holder in the pipe frame by spot welding. And the wiper motor (electric motor) is being fixed to the bracket with the volt | bolt. On the other hand, the wiper device described in Patent Document 2 is provided with a wiper bearing (pivot holder) at one end of a seat bar pipe (frame member) and a cast portion (pivot) at the other end of the seat bar pipe. Holder). The casting portion includes a flat portion extending along the longitudinal direction of the seat bar tube, and the flat portion functions as a bracket for fixing a wiper motor (electric motor).

Japanese Patent Laid-Open No. 09-175336 (FIG. 1) JP 2005-506242 A (FIG. 1)

However, according to the wiper device described in Patent Document 1 described above, since the flat bracket for fixing the electric motor is fixed to the frame member by spot welding, the length of the wiper device in the front-rear direction is long. There is a problem that the size (dimension in the direction orthogonal to the frame member) is large and the layout property to a small vehicle or the like is low. In addition, since the bracket is provided, there is a limit to the weight reduction of the wiper device, and further, a welding process to the frame member of the bracket is required, which causes a problem that the assembly work of the wiper device becomes complicated. On the other hand, according to the wiper device described in Patent Document 2 described above, although the length dimension in the front-rear direction of the wiper apparatus can be reduced, the length dimension in the left-right direction of the wiper apparatus (along the longitudinal direction of the frame member). The dimension) is large, and there is a limit to improving the layout, and it also causes an increase in the weight of the wiper device, and there is a need to improve this point.

It is an object of the present invention to provide a wiper device that can improve layout and assembly, and can further reduce the weight of the entire device.

The wiper device of the present invention is a wiper device including a pivot shaft to which a wiper arm is fixed, and an electric motor that swings and drives the pivot shaft, the pivot holder formed in a solid rod shape, and the pivot A frame fixing portion provided on one side in the longitudinal direction of the holder, to which a connecting frame for connecting the pivot holder and another pivot holder is fixed; and provided on the other side in the longitudinal direction of the pivot holder, and the electric motor Between the motor fixing portion to which the casing is fixed, the frame fixing portion of the pivot holder and the motor fixing portion so as to extend in the short direction of the pivot holder, and the pivot shaft is rotatable. And a support portion to support.

In the wiper device of the present invention, a mounting portion that partially covers the periphery of the motor fixing portion is integrally provided on the casing, and the electric motor is fixed to the motor by fixing members that respectively penetrate the mounting portion and the motor fixing portion. It is fixed to the part.

The wiper device according to the present invention is characterized in that a fixing leg for fixing the pivot holder to the vehicle body is integrally provided further on the other side in the longitudinal direction than the motor fixing portion of the pivot holder.

According to the wiper device of the present invention, the pivot holder is formed in a solid bar shape, and a frame in which a connecting frame for connecting the pivot holder and another pivot holder is fixed to one side in the longitudinal direction of the pivot holder. A fixing part is provided, and a motor fixing part to which the casing of the electric motor is fixed is provided on the other side in the longitudinal direction of the pivot holder. Between the frame fixing part of the pivot holder and the motor fixing part, the shorter side of the pivot holder is provided. A support portion is provided for rotatably supporting the pivot shaft so as to extend. Therefore, since the electric motor can be fixed to the motor fixing portion without using the bracket, the bracket that has been necessary can be eliminated. Therefore, the wiper device can be reduced in size and weight, and the layout can be improved. Further, since the bracket can be eliminated, the assembling property of the wiper device can be improved, and as a result, the assembling process can be simplified and the manufacturing cost can be reduced.

According to the wiper device of the present invention, the mounting portion that partially covers the periphery of the motor fixing portion is integrally provided on the casing, and the electric motor is fixed to the motor fixing portion by the fixing members that respectively penetrate the mounting portion and the motor fixing portion. Therefore, the electric motor can be firmly fixed while being positioned on the motor fixing portion. Therefore, the assembly process of the wiper device can be further simplified.

According to the wiper device of the present invention, since the fixing leg for fixing the pivot holder to the vehicle body is integrally provided further on the other side in the longitudinal direction than the motor fixing portion of the pivot holder, the fixing leg is integrated when the pivot holder is formed. Can be At this time, since the pivot holder has a solid rod shape, the mold used for casting is not complicated.

It is explanatory drawing which shows the front side part of the vehicle carrying the wiper apparatus which concerns on this invention. It is a front view which expands and shows the wiper apparatus of FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 3 is a sectional view taken along line BB in FIG. 2. It is sectional drawing corresponding to FIG. 3 of the wiper apparatus which concerns on 2nd Embodiment. It is the elements on larger scale which show the electric motor side of the wiper apparatus which concerns on 3rd Embodiment.

Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

1 is an explanatory view showing a front side portion of a vehicle equipped with a wiper device according to the present invention, FIG. 2 is an enlarged front view showing the wiper device of FIG. 1, and FIG. 3 is a line AA in FIG. 4 is a sectional view taken along the line BB of FIG.

As shown in FIG. 1, a front windshield 11 is provided on the front side of the vehicle 10, and on the front windshield 11, a DR side (driver's seat side) that wipes rainwater, dust, and the like attached to the front windshield 11. ) A wiper blade 12 and an AS side (passenger seat side) wiper blade 13 are provided.

The DR-side wiper blade 12 is rotatably attached to the distal end side of the DR-side wiper arm 12a, and the AS-side wiper blade 13 is rotatably attached to the distal end side of the AS-side wiper arm 13a. The

wiper blades

12 and 13 are in elastic contact with the front windshield 11 by tension springs (not shown) provided inside the

wiper arms

12a and 13a.

The

wiper blades

12 and 13 reciprocate in the same direction in synchronism with the wiping ranges 11a and 11b formed between the lower inversion position LRP and the upper inversion position URP on the front windshield 11, respectively. It has become. That is, the wiping pattern of each

wiper blade

12, 13 is a tandem type.

The vehicle 10 is equipped with a wiper device 14 that drives the

wiper arms

12a and 13a to perform a reciprocating wiping operation. As shown in FIG. 2, the wiper device 14 is a so-called frame-integrated modular wiper device unitized by a frame member 24.

As shown in FIGS. 1 and 2, the wiper device 14 includes a DR-side pivot shaft 15a to which the DR-side wiper arm 12a is fixed, and an AS-side pivot shaft 15b to which the AS-side wiper arm 13a is fixed. The DR side pivot shaft 15 a is rotatably supported by the DR side pivot holder 16, and the AS side pivot shaft 15 b is rotatably supported by the AS side pivot holder 17.

The DR side pivot holder (another pivot holder) 16 is formed into a solid bent rod shape by casting a molten aluminum material or the like, and includes a main body portion 16a, a frame fixing portion 16b, a supporting portion 16c, and a fixing leg 16d. It has.

On the AS side pivot holder 17 side (left side in the figure) of the main body part 16a, a frame fixing part 16b (not shown in detail) to which one end side (right side in the figure) of the frame member 24 is fixed by caulking is integrally provided. A fixing leg 16d for fixing the DR side pivot holder 16 to the vehicle body (DR side) of the vehicle 10 is integrally formed on the opposite side (right side in the figure) of the main body portion 16a to the AS side pivot holder 17 side. Yes.

The fixed leg 16d is provided with a rubber vibration isolating bush 18a, and a fixing bolt (not shown) passes through the vibration isolating bush 18a. The DR side pivot holder 16 is fixed to the vehicle body (DR side) by screwing a fixing bolt to the vehicle body (DR side).

Between the frame fixing part 16b and the fixed leg 16d of the main body part 16a, as shown in FIG. 3, it is formed in a substantially cylindrical shape so as to extend in the short direction (vertical direction in the figure) of the main body part 16a. The support portion 16c is integrally provided. The support portion 16c rotatably supports the DR side pivot shaft 15a, and a pair of the DR side pivot shaft 15a that smoothly rotates with respect to the support portion 16c on the radially inner side and both ends in the axial direction. The bearing 19 is mounted. An O-ring 20 is provided in the vicinity of each bearing 19, and each O-ring 20 prevents rainwater or the like from entering between the support portion 16c and the DR-side pivot shaft 15a.

One end side of a DR side drive lever 33 forming the link mechanism 30 is fixed to the base end side (lower side in the figure) of the DR side pivot shaft 15a, and a retaining ring is attached to the distal end side of the DR side pivot shaft 15a. 21 is fixed. Thereby, the DR side pivot shaft 15a is prevented from coming off from the DR side pivot holder 16. Further, a serration portion 22 for preventing the idling of the DR side wiper arm 12a (see FIG. 1) and a fastening nut (not shown) for fixing the DR side wiper arm 12a are provided at the further tip side of the DR side pivot shaft 15a. A male screw portion 23 to be screwed is formed.

The AS side pivot holder (pivot holder) 17 is formed into a solid straight rod shape by casting a molten aluminum material or the like, and includes a main body portion 17a, a frame fixing portion 17b, a supporting portion 17c, and a motor fixing portion 17d. I have.

A frame fixing portion 17b (not shown in detail) in which the other end side (left side in the drawing) of the frame member 24 is fixed to the DR side pivot holder 16 side (one side in the longitudinal direction: right side in the drawing) of the main body portion 17a. Is provided integrally, and a motor fixing portion 17d for fixing the wiper motor 26 to the AS side pivot holder 17 is provided on the opposite side (the other side in the longitudinal direction: left side in the drawing) of the main body portion 17a to the DR side pivot holder 16 side. Are integrally formed.

Between the frame fixing part 17b and the motor fixing part 17d of the main body part 17a, as shown in FIG. 3, it is formed in a substantially cylindrical shape so as to extend in the short direction (vertical direction in the figure) of the main body part 17a. The supported portion 17c is integrally provided. The support portion 17c supports the AS side pivot shaft 15b so as to be rotatable, and on the inner side in the radial direction and on both ends in the axial direction, a pair of the AS side pivot shaft 15b that smoothly rotates relative to the support portion 17c. The bearing 19 is mounted. An O-ring 20 is provided in the vicinity of each bearing 19, and each O-ring 20 prevents rainwater or the like from entering between the support portion 17c and the AS side pivot shaft 15b.

One end side of an AS side drive lever 35 forming the link mechanism 30 is fixed to the base end side (lower side in the figure) of the AS side pivot shaft 15b, and a retaining ring is attached to the distal end side of the AS side pivot shaft 15b. 21 is fixed. Thereby, the AS side pivot shaft 15b is prevented from coming off from the AS side pivot holder 17. Further, a serration portion 22 for preventing idling of the AS side wiper arm 13a (see FIG. 1) and a fastening nut (not shown) for fixing the AS side wiper arm 13a are provided at the further tip side of the AS side pivot shaft 15b. A male screw portion 23 to be screwed is formed.

As shown in FIG. 2, a frame member (connecting frame) 24 extending in the vehicle width direction (left and right direction in the drawing) of the vehicle 10 is provided between the AS side pivot holder 17 and the DR side pivot holder 16. . The frame member 24 connects the

pivot holders

17 and 16 so as to have a predetermined relative positional relationship. For example, by preparing a plurality of frame members 24 having different lengths, components other than the frame member 24 are shared. Thus, different mounting spaces on the vehicle 10 side can be accommodated.

The frame member 24 is formed of a hollow cylindrical pipe, and both ends thereof are caulked and fixed to frame fixing

portions

17b and 16b provided integrally with the

pivot holders

17 and 16, respectively. Here, the frame member 24 is not limited to a hollow cylindrical pipe, and a hollow member having a hexagonal cross section, a solid member, or the like can be used in consideration of rigidity required for the frame member 24.

A wiper motor (electric motor) 26 is fixed to the motor fixing portion 17 d of the AS side pivot holder 17 via a pair of fixing bolts (fixing members) 25. The wiper motor 26 drives the

pivot shafts

15a and 15b, and includes a motor part 27 and a gear part 28.

The motor unit 27 includes a motor case (yoke) 27a formed into a bottomed cylinder by pressing (deep drawing) a steel plate or the like, and a plurality of permanent magnets are provided inside the motor case 27a. 27b (two in the figure) are provided. Inside each permanent magnet 27b, an armature (rotor) 27d around which a coil 27c is wound with a predetermined gap is rotatably provided. An armature shaft 27e is provided at the center of rotation of the armature 27d. It is fixed through. The distal end side of the armature shaft 27e extends to the inside of the gear case 28a, and a worm (not shown) that forms a speed reduction mechanism is provided on the distal end side of the armature shaft 27e.

A commutator 27f is fixed between the worm of the armature shaft 27e and the armature 27d, and the end of the coil 27c is electrically connected to the commutator 27f. A plurality of brushes 27g (two in the figure) are in sliding contact with the outer peripheral portion of the commutator 27f while being elastically contacted by the spring force of the plurality of pressing springs 27h. Thus, by supplying a driving current to each brush 27g from an in-vehicle controller (not shown), an electromagnetic force (rotational force) is generated in the armature 27d, and the armature shaft 27e rotates at a predetermined rotational speed and rotational direction. To do.

The gear portion 28 includes a gear case (casing) 28a formed in a predetermined shape by casting a molten aluminum material or the like. A worm wheel 28b forming a speed reduction mechanism is rotatably provided inside the gear case 28a, and gear teeth (not shown) formed on the outer peripheral portion of the worm wheel 28b are attached to the worm of the armature shaft 27e. It is engaged. An output shaft 28c is provided at the rotation center of the worm wheel 28b so as to be integrally rotatable, and the tip end side of the output shaft 28c extends to the outside of the gear case 28a. As a result, the rotation of the armature shaft 27e is decelerated to a predetermined rotational speed, and a torque with a high torque is output from the output shaft 28c.

As shown in FIG. 4, the gear case 28a is integrally provided with a mounting portion 28d having a substantially arc-shaped cross section. The mounting portion 28d is for fixing the wiper motor 26 to the motor fixing portion 17d of the AS side pivot holder 17, and covers the periphery of the motor fixing portion 17d substantially half (partially). A pair of through holes 28e (one in the drawing) are provided at a predetermined interval along the longitudinal direction of the mounting portion 28d, and a pair of fixing bolts 25 pass through each through hole 28e.

Each fixing bolt 25 passes through each through hole 28e and also passes through each through hole 17e (one in the figure) provided in the motor fixing portion 17d, and the tip side thereof is in the short direction of the AS side pivot holder 17. It protrudes on the opposite side (lower side in the figure) to the side of the mounting portion 28d. A pair of nuts 28 f (one in the drawing) are seated on the protruding side of each fixing bolt 25, and one stay 28 g extending along the longitudinal direction of the AS side pivot holder 17 is mounted. Thereby, each nut 28f is screwed to each fixing bolt 25 via the stay 28g, so that the gear case 28a (wiper motor 26) is positioned with respect to the motor fixing portion 17d (AS side pivot holder 17) and firmly. Can be fixed.

As shown in FIG. 2, a fixing leg 28h for fixing the AS side pivot holder 17 to the vehicle body (AS side) of the vehicle 10 is formed integrally with the mounting portion 28d of the gear case 28a. The fixed leg 28h is provided with a rubber vibration isolating bush 18b, and a fixing bolt (not shown) penetrates the vibration isolating bush 18b. The AS side pivot holder 17 is fixed to the vehicle body (AS side) by screwing a fixing bolt to the vehicle body (AS side).

A link mechanism 30 is provided between the output shaft 28c of the wiper motor 26 and the

pivot shafts

15a and 15b. The link mechanism 30 converts the rotational motion of the output shaft 28c into a swing motion and transmits the converted swing motion to the

pivot shafts

15a and 15b. Accordingly, by rotating the wiper motor 26, the

wiper arms

12a and 13a (see FIG. 1) are driven to swing through the output shaft 28c, the link mechanism 30, and the

pivot shafts

15a and 15b.

The link mechanism 30 includes a crank arm 31, a drive rod 32, a DR side drive lever 33, a connecting rod 34, and an AS side drive lever 35. One end side of the crank arm 31 is fixed to the output shaft 28 c, and the other end side of the crank arm 31 is rotated around the output shaft 28 c by the rotational drive of the wiper motor 26.

One end side of the DR side drive lever 33 and the AS side drive lever 35 is fixed to the base end side of each

pivot shaft

15a, 15b (see FIG. 3), and the other end side of each

drive lever

33, 35 is a frame. The member 24 extends to the wiper motor 26 side (lower side in the figure).

A drive rod 32 is provided between the other end side of the crank arm 31 and the other end side of the AS side drive lever 35. The drive rod 32 is rotatably connected to each of the crank arm 31 and the AS side drive lever 35 via a ball joint BJ (not shown in detail). A connecting rod 34 that is longer than the drive rod 32 is provided between the other end side of the DR side drive lever 33 and the other end side of the AS side drive lever 35. The connecting rod 34 is rotatably connected to each of the drive levers 33 and 35 via the ball joint BJ.

As described above in detail, according to the wiper device 14 according to the first embodiment, the AS-side pivot holder 17 is formed in a solid bar shape, and the AS-side pivot holder 17 is disposed on one side in the longitudinal direction of the AS-side pivot holder 17. A motor in which a frame fixing portion 17b to which a frame member 24 for connecting the holder 17 and the DR side pivot holder 16 is fixed is provided, and a gear case 28a of the wiper motor 26 is fixed to the other side in the longitudinal direction of the AS side pivot holder 17 is provided. A fixing portion 17d is provided, and the AS side pivot shaft 15b is rotatably supported between the frame fixing portion 17b of the AS side pivot holder 17 and the motor fixing portion 17d so as to extend in the short direction of the AS side pivot holder 17. A support portion 17c was provided.

Therefore, since the wiper motor 26 can be fixed to the motor fixing portion 17d regardless of the bracket, the bracket that has been necessary before can be eliminated. Therefore, the wiper device 14 can be reduced in size and weight, and the layout can be improved. Further, since the bracket can be eliminated, the assembling property of the wiper device 14 can be improved, and as a result, the assembling process can be simplified and the manufacturing cost can be reduced.

Further, according to the wiper device 14 according to the first embodiment, the gear case 28a is integrally provided with the mounting portion 28d that partially covers the periphery of the motor fixing portion 17d, and penetrates the mounting portion 28d and the motor fixing portion 17d, respectively. Since the wiper motor 26 is fixed to the motor fixing portion 17d by the fixing bolt 25, the wiper motor 26 can be firmly fixed while being positioned on the motor fixing portion 17d. Therefore, the assembly process of the wiper device 14 can be further simplified.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part which has the same function as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

FIG. 5 shows a cross-sectional view corresponding to FIG. 3 of the wiper device according to the second embodiment.

The wiper device 40 according to the second embodiment differs from the wiper device 14 according to the first embodiment described above in the fixing structure of the wiper motor 26 to the motor fixing portion 17d.

As shown in FIG. 5, the motor fixing portion 17d is provided with a female screw hole 41, and a fixing bolt (fixing member) 42 is screwed to the female screw hole 41. That is, the mounting portion 28d formed on the gear case 28a is attached to the motor fixing portion 17d, and the fixing bolt 42 is screwed to the female screw hole 41 in this state, whereby the gear case 28a (wiper motor 26) is connected to the motor fixing portion. While being positioned with respect to 17d (AS side pivot holder 17), it can be firmly fixed.

Also in the wiper device 40 according to the second embodiment formed as described above, the same operational effects as the wiper device 14 according to the first embodiment described above can be obtained. In addition, according to the second embodiment, the nut 28f and the stay 28g (see FIG. 4) are not required as a structure for fixing the wiper motor 26 to the motor fixing portion 17d, so that the wiper device 40 is further reduced in weight. can do. Further, the assembly process of the wiper device 40 can be further simplified, and the manufacturing cost can be further reduced.

Next, a third embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part which has the same function as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

FIG. 6 is a partially enlarged view showing the electric motor side of the wiper device according to the third embodiment.

Compared with the wiper device 14 according to the first embodiment described above, the wiper device 50 according to the third embodiment eliminates the fixed leg 28h of the gear case 28a and integrates the fixed leg 51 with the AS-side pivot holder 17. The point which was provided in is different.

As shown in FIG. 6, on the other side in the longitudinal direction (left side in the figure) of the AS side pivot holder 17 with respect to the motor fixing portion 17d, it has substantially the same diameter (thickness) as the AS side pivot holder 17, and the tip side is A fixed leg 51 that is bent toward the side opposite to the wiper motor 26 side (upper side in the figure) is integrally provided. The fixed leg 51 is for fixing the AS side pivot holder 17 to the vehicle body (AS side), and a rubber vibration isolating bush 18 b is provided on the distal end side of the fixed leg 51. A fixing bolt (not shown) passes through the anti-vibration bush 18b, and the AS-side pivot holder 17 is fixed to the vehicle body (AS side) by screwing the fixing bolt to the vehicle body (AS side).

Also in the wiper device 50 according to the second embodiment formed as described above, the same operational effects as the wiper device 14 according to the first embodiment described above can be obtained. In addition, according to the third embodiment, the fixing leg for fixing the AS side pivot holder 17 to the vehicle body (AS side) further to the other side in the longitudinal direction than the motor fixing portion 17d of the AS side pivot holder 17. Since 51 is provided integrally, the fixed leg 51 can be integrated when the AS side pivot holder 17 is molded. At this time, since the AS-side pivot holder 17 has a solid bar shape, a molding die (not shown) used for casting or the like is not complicated.

The present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the scope of the invention. For example, in each of the above embodiments, the AS side pivot holder 17 is provided with the motor fixing portion 17d and the wiper motor 26 is fixed to the motor fixing portion 17d. However, the present invention is not limited to this, and the vehicle 10 Depending on the steering position (right side or left side), the DR side pivot holder 16 may be provided with a motor fixing portion, and the wiper motor 26 may be fixed to the motor fixing portion.

In each of the above embodiments, the wiping pattern of each

wiper blade

12, 13 is a tandem type. However, the present invention is not limited to this, and wiper motors are arranged on the DR side and AS side of the vehicle. The wiper blades corresponding to the wiper motors can also be applied to a counter wiping type in which the wiper blades are wiped counter to each other.

Further, in each of the above-described embodiments, the

wiper devices

14, 40, 50 wipe the front windshield 11 on the front side of the vehicle 10, but the present invention is not limited to this, and the rear of the vehicle 10 is shown. The present invention can also be applied to a wiper device that wipes a rear windshield provided on the side and a windshield of a railway vehicle, an aircraft, or the like.

The wiper device is mounted on a vehicle such as an automobile and is used for wiping away rainwater and dust adhering to the windshield to ensure good visibility.

Claims

A wiper device comprising a pivot shaft to which a wiper arm is fixed, and an electric motor for swinging and driving the pivot shaft,
A pivot holder formed into a solid rod,
A frame fixing portion which is provided on one side in the longitudinal direction of the pivot holder and to which a connection frame for connecting the pivot holder and another pivot holder is fixed;
A motor fixing portion provided on the other side in the longitudinal direction of the pivot holder, to which a casing of the electric motor is fixed;
A support portion is provided between the frame fixing portion of the pivot holder and the motor fixing portion so as to extend in a short direction of the pivot holder and rotatably supports the pivot shaft. Wiper device to do.
2. The wiper device according to claim 1, wherein a mounting portion that partially covers the periphery of the motor fixing portion is integrally provided on the casing, and the electric motor is provided by a fixing member that penetrates the mounting portion and the motor fixing portion, respectively. A wiper device fixed to a motor fixing portion.
2. The wiper device according to claim 1, wherein a fixing leg for fixing the pivot holder to the vehicle body is integrally provided further on the other side in the longitudinal direction than the motor fixing portion of the pivot holder.