JP2001114074A - Wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the interference of an engagement hole with an engaging pin when opening and closing a hatch panel without generating the idle rotation between the engagement hole of a driving disk and the engaging pin of a driven plate. SOLUTION: An engaging pin 19 provided in a driven plate 18 fitted to a hatch panel 5 at a wiper pivot 8 side and an engagement hole 25 provided in a driving disk 24 fitted to a back door main body 3 at a wiper motor unit 22 side are provided on the diameter line segment O in the vertical direction of the driving disk 24 at a wiper stop position, and since the engagement hole 25 is formed into a long hole in the diameter line segment O direction, the generation of idle rotation between the engagement hole 25 and the engaging pin 19 in the disk rotating direction can be prevented, and even if a displacement in the vertical direction is generated in the moving locus of the engaging pin 19 when opening and closing the hatch panel 5, this displacement is allowed by the vertical long engagement hole 25, and the interference of the engaging pin 19 with an edge of the engagement hole 25 is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device mounted on a vehicle body of an automobile, and more particularly to a rear wiper device mounted on a hatch panel openably and closably mounted on an opening of a back door body.

[0002]

2. Description of the Related Art As a rear wiper device provided on a hatch panel of a back door, a wiper pivot and a wiper motor unit are separated, and the wiper pivot is mounted on a lower edge portion, which is a free end of the hatch panel, while a wiper motor unit is mounted. It is known that the hatch panel is attached to the lower edge of the opening of the back door body to reduce the weight of the hatch panel, improve the opening and closing operability, and eliminate the need for harness wiring on the hatch panel side. Have been.

As described above, since the wiper pivot and the wiper motor unit are separately mounted on the hatch panel side and the back door body side, the drive disk having the engagement hole at the motor output shaft end of the wiper motor unit is fixed. On the other hand, a driven plate having an engagement pin that engages with and disengages from the engagement hole of the drive disk is fixed to the indoor end of the wiper pivot, the hatch panel is closed, and the engagement pin and the engagement hole are fixed. Is configured to be able to transmit the driving force of the wiper motor unit to the wiper pivot.

[0004]

The engagement hole of the drive disk and the engagement pin of the driven plate are provided on the lateral diameter line of the drive disk and the driven plate at the wiper stop position. The mating hole is formed so as to be long in the direction of the diameter line so as to expand the catching range of the engaging pin when the hatch panel is closed. Since the engagement pin draws an arc-shaped movement trajectory in the vertical direction, even a small mounting error or molding error in the vertical direction may cause interference between the engagement pin and the edge of the engagement hole.

[0005] This is because the larger the vertical span between the hinge point on the upper edge of the hatch panel and the position of the engaging pin, the larger the
The error is amplified and the degree of interference increases.

In order to avoid this interference, it is sufficient to increase the vertical dimension of the engagement hole. However, this causes play in the disk rotation direction between the engagement hole and the engagement pin.
The rotation of the drive disk and the driven plate cannot be synchronized with each other.

Accordingly, the present invention is directed to a wiper device capable of avoiding interference between the engaging holes and the engaging pins when the hatch panel is opened and closed, without causing rotational play between the engaging holes of the drive disk and the engaging pins of the driven plate. Is provided.

Another object of the present invention is to provide a wiper device that can easily adjust the axis of the wiper pivot and the motor output shaft of the wiper motor unit, and can improve the mounting workability.

[0009]

According to the first aspect of the present invention, a wiper motor unit is attached to one edge of an opening provided in a vehicle body via a bracket, and a motor output shaft of the wiper motor unit is provided. While a drive disk having an engagement hole or an engagement pin at an end is fixedly mounted, a wiper pivot is attached to a hatch panel attached to the other edge of the opening by a hinge member so as to be openable and closable. A driven plate having an engaging hole or an engaging hole that engages with or disengages from the engaging hole or the engaging pin of the drive disk is fixed to an end of the drive disk, and a hatch panel is closed to provide the drive disk and the driven plate with the driven plate. In a wiper device capable of transmitting a driving force of a wiper motor unit to a wiper pivot by engaging an engagement pin and an engagement hole, The engagement hole and the engagement pin are provided on the diameter line of the drive disk parallel to the rotation surface of the hatch panel at the wiper stop position, and the engagement hole is formed in a length parallel to the rotation surface of the hatch panel. It is characterized by being formed in a hole.

According to a second aspect of the present invention, the engaging pin according to the first aspect is movably mounted in an axial direction thereof and is urged in a projecting direction by an urging means. I have.

According to the third aspect of the present invention, a wiper motor unit is attached to one edge of an opening provided in the vehicle body via a bracket, and an engagement hole or an engagement hole is provided at a motor output shaft end of the wiper motor unit. While a drive disk having an engagement pin is fixedly mounted, a wiper pivot is mounted on a hatch panel which is attached to the other edge of the opening by a hinge member so as to be openable and closable, and the drive is mounted on an indoor end of the wiper pivot. A driven plate having an engaging pin or an engaging hole that engages with or disengages from the engaging hole or the engaging pin of the disk is fixed, the hatch panel is closed, and the driving pin and the engaging pin and the engaging hole provided on the driven plate are closed. In the wiper device capable of transmitting the driving force of the wiper motor unit to the wiper pivot by engaging
A bracket for mounting the wiper motor unit, a vehicle-side bracket attached to the vehicle body, and a motor-side bracket attached to the wiper motor unit and fixed to the vehicle-side bracket, between these two brackets, The present invention is characterized in that mounting adjustment means for axially aligning the motor output shaft of the wiper motor unit with respect to the wiper pivot is provided.

According to a fourth aspect of the present invention, the mounting and adjusting means according to the third aspect includes: a bolt and a nut for fastening and fixing the vehicle body side bracket and the motor side bracket at a plurality of locations; It is characterized in that one of the brackets includes a bolt insertion hole formed with a diameter larger than the bolt outer diameter.

According to a fifth aspect of the present invention, an annular elastic mount member for supporting the motor-side bracket on the vehicle-body-side bracket is fitted into the large-diameter bolt insertion hole according to the fourth aspect. It is characterized by doing.

[0014]

According to the first aspect of the present invention, the wiper motor unit-side drive disk engaging hole or engaging pin and the wiper pivot-side driven plate engaging pin or engaging hole are provided with a wiper. The stop hole is provided on the diameter line of the drive disk parallel to the rotation surface of the hatch panel, and the engagement hole is formed as an elongated hole parallel to the rotation surface of the hatch panel. There is no gap in the disk rotation direction between the engagement hole and the engagement pin, so that there is no rotational play, and the rotation of the drive disk and the driven plate is synchronized to rotate the wiper pivot properly. Can be.

[0015] Even if the movement locus of the engagement pin due to the opening and closing of the hatch panel is displaced in the vertical direction due to a mounting error or the like, this displacement is eliminated by the engagement hole long in a direction parallel to the rotation surface of the hatch panel. As a result, the interference between the engagement pin and the edge of the engagement hole can be reliably avoided.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention, when the hatch panel is opened, even if the drive disk and the driven plate are displaced in the rotation direction and the engagement holes and the engagement pins are displaced in the disk rotation direction. When the hatch panel is closed, the engaging pin ends resiliently contact the drive disk surface to absorb the abutment load, not hinder the closing of the hatch panel, and engage when the wiper is driven by the rotation of the drive disk. As soon as the hole reaches the position of the engaging pin, the engaging pin falls into the engaging hole, and the two are automatically engaged, so that power can be properly transmitted to the wiper pivot.

According to the third aspect of the present invention, the bracket for attaching the wiper motor unit to the vehicle body includes a vehicle body side bracket attached to the vehicle body and a motor side bracket attached to the wiper motor unit and fixed to the vehicle body side bracket. The wiper pivot and the wiper motor unit are attached to the wiper motor unit with respect to the wiper pivot unit mounted on the hatch panel when the wiper pivot and the wiper motor unit are mounted. Since the axis of the output shaft can be easily adjusted, and thus the fixing position of the motor-side bracket may be determined based on the wiper pivot, the mounting position of the wiper pivot with respect to the hatch panel and / or with respect to the vehicle body may be adjusted. Wiper motor Mounting position adjustment of Tsu door is not required,
The shaft center of the wiper pivot and the motor output shaft can be easily adjusted, and the workability of mounting the wiper pivot and the wiper motor unit can be further improved.

According to the invention described in claim 4, according to claim 3,
In addition to the effects of the invention, the bolt insertion hole of one of the vehicle body side bracket and the motor side bracket is formed to have a diameter larger than the outer diameter of the fixing bolt, so that the bolt in the radial direction with respect to the bolt insertion hole is formed. The mounting adjustment can be easily performed by the movement adjustment, the adjustment operation can be easily performed, and the structure can be simplified, and the cost can be advantageously obtained.

According to the invention set forth in claim 5, according to claim 4,
In addition to the effects of the invention, vibration of the wiper motor unit can be attenuated by the elastic mount member, so that sound vibration countermeasures can be thoroughly implemented, and quality and reliability can be improved.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 5, a back door body 3 also serving as the vehicle body 1 is mounted on the rear opening 2 of the vehicle body 1 so as to be openable and closable, and an opening 4 provided in a substantially upper half of the back door body 3 is provided. A hatch panel 5 is attached to open and close freely.

The hatch panel 5 is attached to the upper edge of the opening 4 of the back door body 3 as the "other edge" by a hinge member 6 so that it can be opened and closed in the front-rear direction. A wiper pivot 8 of a rear wiper device 7 as a "wiper device" is provided on a lower edge portion as "one edge portion".
Is installed.

Specifically, as shown in FIGS. 1 to 4, the wiper pivot 8 is pivotally supported by a pivot bearing 9 inserted and fixed in a pivot mounting hole 5 a provided in the hatch panel 5. Wiper blade 11 at end
Is attached.

The pivot bearing 9 includes a flange 12a provided on the outer edge of the collar 12 fitted in the pivot mounting hole 5a,
With the hole edge of the pivot mounting hole 5a interposed between the flange 9a provided on the pivot bearing 9 and a nut 14 via a washer 15 on a screw portion 13 provided at the end of the pivot bearing 9 on the vehicle exterior side. It is screwed and fastened.

A seal member 16 is interposed on the mounting surface side of the flange 9a of the pivot bearing 9 to ensure a sealing property around the mounting portion of the pivot bearing 9, and the washer 15 and the nut 14 are wipers. It is concealed by a resin cap 17 inserted through the pivot 8.

A driven plate 18 having an engaging pin 19 which is engaged with and disengaged from an engaging hole 25 provided in a drive disk 24 of the wiper motor unit 22 to be described later is fixed to an end of the pivot bearing 9 on the indoor side. I have.

The engagement pin 19 is axially movably mounted on a pin holder 20 and is urged in a protruding direction by an urging means 21 such as a spring disposed in the pin holder 20.

The engagement hole 25 and the engagement pin 19 may be provided on the driven plate 18 and the drive disk 24, respectively.

On the other hand, a wiper motor unit 22 for rotating the wiper pivot 8 is attached to a lower edge portion of the back door body 3 via a bracket 26 at a position corresponding to the wiper pivot 8.

At the end of the motor output shaft 23 of the wiper motor unit 22, a drive disk 24 having an engagement hole 25 with which the engagement pin 19 of the driven plate 18 is engaged when the hatch panel 5 is closed. The driving force of the wiper motor unit 22 is transmitted to the wiper pivot 8 via the drive disk 24 and the driven plate 18 by the engagement between the engagement pin 19 and the engagement hole 25, The wiper pivot 8 rotates.

The engagement pin 19 and the engagement hole 25
Is the wiper stop position, that is, the wiper blade 1
1 is stopped at the storage position substantially parallel to the lower edge of the hatch panel 5, and the diameter segment O in the vertical direction of the drive disk 24 is
And the engagement hole 25 is formed with the diameter line segment O.
It is formed in a long hole in the direction. This straight line segment O is a rotation surface of the hatch panel 5 (that is, corresponds to the paper surface in FIG. 1).
Are provided in parallel to

On the other hand, the bracket 26 for mounting the wiper motor unit 22 has leg portions 26 on the left and right sides and the lower side.
a through the legs 26a.
A door-side bracket 26A as a “vehicle-side bracket” fastened and fixed to a lower edge portion of the door with a bolt / nut 27;
A motor-side bracket 26B is attached to the wiper motor unit 22 and fixed to the door-side bracket 26A.

The door-side bracket 26A and the motor-side bracket 26B are fastened and fixed by bolts 28 and nuts 29 at the lower central portion and the upper left and right three points.

A mounting adjustment means 30 for aligning the motor output shaft 23 of the wiper motor unit 22 with respect to the wiper pivot 8 in the axial direction is provided between the door-side bracket 26A and the motor-side bracket 26B.
Is provided.

The door-side bracket 26A and the motor-side bracket 26B are provided with bolt insertion holes 31 and 32 for fastening with bolts 28 and nuts 29. In this embodiment, the bolt insertion of the door-side bracket 26A is performed. The hole 31 is formed to have a diameter larger than the outer diameter of the bolt 28 so that the bolt 28 can be moved and adjusted in the radial direction.
The above constitutes the above-mentioned attachment adjusting means 30.

An annular elastic mount member 33 made of rubber, synthetic resin, or the like is fitted and fixed in the large-diameter bolt insertion hole 31, and the elastic mount member 33 is attached to the retainer plate 34 and the motor-side bracket 26B. The motor-side bracket 26B is supported on the door-side bracket 26A by the elastic mount member 33 by anti-vibration.

Between the retainer plate 34 and the motor-side bracket 26B, a collar 35 for regulating the compression allowance of the elastic mount member 33 is provided.

The elastic mount member 33 has an annular groove 33a formed in the center of the outer peripheral surface thereof, and the annular hole 33a is engaged with and fixed to the edge of the bolt insertion hole 31.
Each bolt insertion hole 31 is provided with a mount member attachment / detachment hole 31a having a diameter larger than the outer diameter of the elastic mount member 33, and the elastic mount member 33 is connected to the bolt insertion hole 31 using the mount member attachment / detachment hole 31a. It is designed to be easily inserted and engaged with the rim of the hole.

The above-described pivot bearing 9 is basically provided via a bracket 9b extending from the flange 9a.
The bolt insertion hole 9c is fastened and fixed to the hatch panel 5 with bolts and nuts (not shown). In this embodiment, a hatch panel lock (not shown) attached to the lower edge of the opening 4 of the back door body 3 is used. The striker 36 which engages with and disengages from the mechanism is fixedly fastened to the bracket 9b.

In view of this, the bolt insertion hole 9c is formed to be horizontally long so that the striker 36 can be adjusted in the left-right direction in accordance with the hatch panel lock mechanism.

According to the structure of the above embodiment, the engagement hole 2 of the drive disk 24 on the wiper motor unit 22 side
5 and the engagement pin 19 of the driven plate 18 on the wiper pivot 8 side are provided on the vertical diameter segment O of the drive disk 24 at the wiper stop position.
Is formed in a long hole in the direction of the diameter line segment O, there is no gap in the disk rotation direction between the engagement hole 25 and the engagement pin 19, and thus there is no rotation play. By rotating the wiper pivot 8 properly by synchronizing the rotation of the drive disk 24 and the driven plate 18, the wiper blade 11 can be wiped within a predetermined set range.

Further, even if the movement locus of the engagement pin 19 due to the opening and closing of the hatch panel 5 is displaced in the vertical direction due to a mounting error or the like, the displacement can be allowed by the engagement hole 25 of the elongated hole. Interference between the mating pin 19 and the edge of the engagement hole 25 can be reliably avoided.

When the hatch panel 5 is open,
Even if the drive disk 24 or the driven plate 18 is moved in the rotation direction and the engagement hole 25 and the engagement pin 19 are displaced in the disk rotation direction, the engagement pin 19 is movable in the axial direction. When the hatch panel 5 is closed, the end of the engaging pin 19 resiliently contacts the surface of the drive disk 24 to absorb the abutment load and to close the hatch panel 5 when the hatch panel 5 is closed. There is no hindrance to the closing movement, and when the wiper is driven, the engagement pin 19 falls into the engagement hole 25 as soon as the engagement hole 25 reaches the position of the engagement pin 19 due to the rotation of the drive disk 24. By automatically engaging the two, the power transmission to the wiper pivot 8 can be properly performed.

Here, as described above, the wiper pivot 8
The wiper motor unit 22 and the hatch panel 5
Side and the back door body 3 are separately mounted, so that when they are mounted, the wiper pivot 8
And the motor output shaft 23 of the wiper motor unit 22
It is necessary to adjust the mounting so that the axes of the two are aligned.

In this embodiment, the mounting bracket 26 of the wiper motor unit 22 includes a door-side bracket 26A mounted on the lower edge of the opening 4 of the back door body 3,
A motor-side bracket 26B attached to the wiper motor unit 22 and fixed to the door-side bracket 26A, between which the motor output shaft 23 is axially aligned with the wiper pivot 8. , The wiper pivot 8 is attached to the hatch panel 5, and the door-side bracket 26A of the bracket 26 is attached to the back door body 3.
After the motor is mounted on the door, the motor-side bracket 26B is moved and adjusted with respect to the door-side bracket 26A by the mounting adjustment means 30, so that the axis of the motor output shaft 23 can be easily adjusted with respect to the wiper pivot 8. it can.

Therefore, the fixing position of the motor-side bracket 26 B may be determined with reference to the wiper pivot 8, so that the mounting position of the wiper pivot 8 with respect to the hatch panel 5 can be adjusted and / or the wiper motor unit 22 with respect to the back door body 3. The adjustment of the mounting position of the wiper pivot 8 and the motor output shaft 23 can be easily performed, and the mounting workability of the wiper pivot 8 and the wiper motor unit 22 can be further improved.

In particular, since the mounting position of the wiper pivot 8 with respect to the hatch panel 5 has a great influence on the wiper wiping performance, adjusting the position of the motor output shaft 23 with respect to the axis of the motor output shaft 23 has a problem. In order to maintain, it should be avoided as much as possible,
When the mounting position of the wiper motor unit 22 is adjusted with respect to the direction, the direction of the mounting seat surface of the door-side bracket 26A is regulated by the shape of the back door 3, and the mounting seat surface whose position can be adjusted in a direction perpendicular to the wiper pivot 8 is adjusted. Considering that it is difficult to secure them, it can be understood that the configuration including the door-side bracket 26A and the motor-side bracket 26B is advantageous for improving the mounting workability of the wiper pivot 8 and the wiper motor unit 22.

In particular, in the present embodiment, the above-mentioned attachment adjusting means 30 is provided with a bolt 28 and a nut 29 for fastening and fixing the door side bracket 26A and the motor side bracket 26B.
And a bolt insertion hole 31 having a diameter larger than the outer diameter of the bolt provided on the door side bracket 26A. At the time of the mounting adjustment, the motor side bracket 26B is fixed by the bolt 28 and the nut 29 to the door side bracket 26A. In a state where the bolts 28 are temporarily fixed, the bolt 28 can be easily shifted in the radial direction within the diameter of the bolt insertion hole 31 integrally with the motor-side bracket 26B, so that the adjustment work can be easily performed and the structure can be simplified. And it can be obtained cost-effectively.

Further, an annular elastic mount member 33 is fitted and fixed in the bolt insertion hole 31 of the door side bracket 26A, and the motor side bracket 26B is supported on the door side bracket 26A in a vibration-proof manner. The vibration of the unit 22 can be attenuated by the elastic mount member 33 to take thorough measures against sound and vibration, thereby improving the quality and reliability.

In the above-described embodiment, the bolt insertion hole 31 of the door-side bracket 26A is formed with a large diameter for mounting adjustment. Conversely, the bolt insertion hole 32 of the motor-side bracket 26B is formed with a large diameter. Alternatively, the elastic mount member 33 may be fitted and fixed in the bolt insertion hole 32 of the motor-side bracket 26B.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the arrangement state of the wiper pivot and the wiper motor unit according to the embodiment as viewed obliquely from above.

FIG. 3 is an exploded perspective view of FIG. 2;

FIG. 4 is a plan view of a drive disk.

FIG. 5 is a rear perspective view of a back door type vehicle to which the present invention is applied.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 back door body (body) 4 opening 5 hatch panel 7 wiper device 8 wiper pivot 18 driven plate 19 engaging pin 21 biasing means 22 wiper motor unit 23 motor output shaft 24 drive disk 25 engaging hole 26 bracket 26A door side Bracket (vehicle side bracket) 26B Motor side bracket 28 Bolt (mounting and adjusting means) 29 Nut (mounting and adjusting means) 30 Mounting and adjusting means 31 Bolt insertion hole (mounting and adjusting means) 33 Elastic mount member

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takao Saijo 1760 Higashimatano-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Automobile Electrical Industry Co., Ltd. (72) Inventor Hiroyuki Iizumi 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Akihiko Inagaki 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture Nissan Motor Co., Ltd. F-term (reference) 3D025 AA01 AB01 AC01 AD03 AE02 AE03 AE66

Claims (5)

[Claims] 1. A wiper motor unit is attached to one edge of an opening provided in a vehicle body via a bracket,
A drive disk having an engagement hole or an engagement pin is fixedly provided at the motor output shaft end of the wiper motor unit, and a wiper pivot is attached to a hatch panel which is attached to the other edge of the opening by a hinge member so as to be freely opened and closed. At the same time, a driven plate having an engaging pin or an engaging hole which engages with or disengages from the engaging hole or the engaging pin of the drive disk is fixed to an end of the wiper pivot on the indoor side, and the drive disk is closed by closing the hatch panel. In the wiper device capable of transmitting the driving force of the wiper motor unit to the wiper pivot by engaging the engagement pin and the engagement hole provided in the driven plate with the engagement hole and the engagement pin, At the wiper stop position, a hole is provided on the diameter line of the drive disk parallel to the rotation surface of the hatch panel, and the engaging hole is Wiper device, characterized in that formed parallel long holes on the dynamic surface. 2. The wiper device according to claim 1, wherein the engaging pin is movably mounted in an axial direction thereof and is urged in a protruding direction by an urging means. 3. A wiper motor unit is attached to one edge of an opening provided in the vehicle body via a bracket,
A drive disk having an engagement hole or an engagement pin is fixedly provided at the motor output shaft end of the wiper motor unit, and a wiper pivot is attached to a hatch panel which is attached to the other edge of the opening by a hinge member so as to be freely opened and closed. At the same time, a driven plate having an engaging pin or an engaging hole which engages with or disengages from the engaging hole or the engaging pin of the drive disk is fixed to an end of the wiper pivot on the indoor side, and the drive disk is closed by closing the hatch panel. By engaging the engaging pin and the engaging hole provided in the driven plate and the engaging hole, the driving force of the wiper motor unit can be transmitted to the wiper pivot. A vehicle-side bracket attached to the vehicle body and the vehicle-side bracket attached to the wiper motor unit. And a motor-side bracket fixed to the wiper, and mounting adjustment means for axially aligning the motor output shaft of the wiper motor unit with respect to the wiper pivot is provided between the two brackets. Wiper device. 4. The mounting adjustment means includes: a bolt and a nut for fastening and fixing the vehicle-side bracket and the motor-side bracket at a plurality of locations; and one of the vehicle-side bracket and the motor-side bracket having a diameter larger than the bolt outer diameter. The wiper device according to claim 3, further comprising a formed bolt insertion hole. 5. The rear wiper according to claim 4, wherein an annular elastic mount member for supporting the motor-side bracket on the vehicle body-side bracket in a vibration-proof manner is fitted and fixed in the bolt insertion hole formed in a large diameter. apparatus.