JPH08175340A - Wiper device attached to vehicular outside mirror device - Google Patents

Abstract

PURPOSE: To allow a wiper device attached to a vehicular outside mirror device to enlarge its wiping range by having a parallel holding mechanism, an attitude changing means and an attitude restoring means, and causing a wiper unit to move back and forth in an almost S shape for wiping a reflecting surface. CONSTITUTION: When a wiper shaft 20 is rotated counterclockwise by driving the driving unit of a wiper device, a wire unit 34 and a wiper arm 2 move forward in the counterclockwise direction from a retreat position to an attitude changing position. At the attitude changing position the first end 41 of the wiper unit 34 presses against the projecting part 150 of a rim so that the wiper unit 34 rotates about the shaft of a rivet 22 in the direction opposite to that of the forward movement of the arm 2 and against the spring force of the plate spring portion 44 of a parallel holding mechanism, thereby changing attitude. Since the plate spring portion 44 is made to elastically abut to the circular edge 27 of the other end 25 of the arm 2, the wiper unit 34 and the arm 2 are held in their attitudes at reciprocation inverting positions.

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 outside mirror device, and more particularly to a wiper device having a wide wiping range.

[0002]

2. Description of the Related Art An outside mirror device for a vehicle generally includes a mirror unit including a mirror body and a mirror holder, and a mirror housing to which the mirror unit is attached. The above-described mirror housing is attached to the outside of the vehicle body of an automobile through a mirror base that is separate from the mirror housing or a stay that is integrated with the mirror housing. This outside mirror device for a vehicle reflects information on the rear side of an automobile on a surface reflection surface (hereinafter, simply referred to as a mirror surface) of a mirror body and transmits it to a driver. Recently, in this vehicle outside mirror device, there are raindrops, dust, etc. adhering to the mirror surface,
Some vehicles are equipped with a wiper device that wipes off objects that hinder the transmission of information behind the vehicle to the driver. This wiper device generally includes a drive unit mounted in a mirror housing, a wiper arm attached to the drive unit, and a wiper unit attached to the wiper arm. By driving the drive unit, the wiper unit reciprocates on the mirror surface via the wiper arm and wipes the substance attached to the mirror surface.

[0003]

However, in the wiper device provided in the above-mentioned conventional vehicle outside mirror device, the wiper unit has a fan-shaped mirror surface centered around the rotation axis of the drive unit via the wiper arm. Since the object is simply wiped off the object on the mirror surface by reciprocating above, there is a problem that the wiper unit has a wiping range limited to the above fan-shaped narrow range.

An object of the present invention is to provide a wiper device mounted on a vehicle outside mirror device having a wide wiping range.

[0005]

According to the present invention, a parallel state holding mechanism for keeping the wiper unit and the wiper arm in a substantially parallel state from the retracted position to the posture changing position, and from the posture changing position to the reciprocating reversing position. During this period, the wiper unit is rotated in the direction opposite to the forward movement direction of the wiper arm to change the posture of the wiper unit, and the wiper unit is moved back to the retracted position from the reciprocal reversal position. And a posture returning means for returning the posture of the wiper unit by rotating the wiper unit in a direction opposite to the direction to bring the wiper unit and the wiper arm into a substantially parallel state.

[0006]

According to the present invention, by driving the drive unit according to the above-described structure, first, the wiper unit is rotated in the same direction as the wiper arm in the same direction from the retracted position to the posture changing position and is moved forward. In addition, since the wiper unit rotates in the opposite direction of the forward movement direction of the wiper arm from the posture changing position to the reciprocating reversing position and moves forward while changing the posture, the wiper unit moves from the retracted position to the reciprocating reversing position. The unit moves in an almost S-shape and wipes the reflection surface. Also, between the reciprocal reversal position and the retracted position, the wiper unit rotates in the direction opposite to the return movement direction of the wiper arm and returns while returning to the posture, so that the wiper unit returns to an almost S-shape and returns to the reflecting surface. Wipe off the top. As described above, according to the present invention, since the wiper unit reciprocates substantially in an S shape to wipe the reflective surface, the wiper unit reciprocates in a fan shape to wipe the reflective surface, compared with a conventional wiper device. Is wide.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Four of the embodiments of the wiper device equipped in the vehicle outside mirror device of the present invention will be described below with reference to the accompanying drawings. 1 to 7 show a first embodiment of a wiper device mounted on a vehicle outside mirror device of the present invention. In FIG. 1, reference numeral 1 is a vehicle outside mirror device. The vehicle outside mirror device 1 is a so-called door mirror that is installed in a door of an automobile, and includes a mirror body 10 and a mirror holder 11.
Mirror unit 12 consisting of and this mirror unit 1
2, a mirror housing 13 mounted rotatably vertically and horizontally by a pivot mechanism or the like (not shown), and a mirror base in which the mirror housing 13 is tiltably mounted outside a vehicle body, for example, a door (not shown). 14
And

The front shape of the mirror body 10 described above is
As shown in FIGS. 1 and 2, it has a substantially rectangular or oval shape. The mirror body 10 is formed by providing a reflective film on the back surface of a transparent plate such as a glass plate or a synthetic resin plate. The mirror surface of the surface reflection surface of the mirror body 10 may be a flat surface as shown in FIG. 4 or a curved surface (not shown). The mirror body 10 reflects information on the rear of the vehicle on the mirror surface 10 and transmits the information to the driver.

The above-mentioned mirror holder 11 is made of, for example, a synthetic resin, and as shown in FIG.
It covers and protects the mirror body 10 from the entire peripheral edge to the rear surface thereof, and includes a rim 15 on the front surface side of the mirror body 10 and a back plate 16 on the rear surface side of the mirror body 10.

The front shape of the above-mentioned back plate 16 is
As shown in FIG. 2, the mirror body 10 is slightly larger than the mirror body 10 and has a substantially rectangular shape or an egg shape in which the upper portion 160 projects from the upper edge of the mirror body 10 when the mirror bodies 10 are stacked. The upper portion 160 of the back plate 16 corresponds to the retracted position of the wiper unit 34, which will be described later, as shown in FIG. This back plate 16
A plurality of discharge holes (shown by broken lines) 161 are provided in the upper part 160 of the
May be provided. This back plate 16
The front surface of the upper part 160 and the surface of the mirror body 10 are substantially flush with each other. The upper part 1 of this back plate 16
The front side of the portion other than 60 is opened, and the opening edge of the back plate 16 and the rib 162 hold the rear surface of the mirror body 10. The upper part 160 of this back plate 16
A wiper shaft 20 of a wiper device to be described later projects from the back side to the front side.

As shown in FIG. 2, the front shape of the rim 15 described above is substantially rectangular or oval, which is slightly larger than the back plate 16. Front opening edge 15 of this rim 15
4 holds the surface of the mirror body 10. This rim 1
5 and the back plate 16, the engaging claw 163 and the engaging hole 1
The mirror body 10 is integrated by engagement with 55 or the like, and covers and covers the entire periphery of the mirror body 10 from the back surface to protect and hold the mirror body 10. The eaves part 1 is provided on the rim 15.
7 are formed. The eaves portion 17 forms a space for accommodating the wiper unit 34 located at the retracted position, corresponding to the upper portion 160 of the back plate 1 described above.

The above-mentioned mirror housing 13 is made of, for example, a synthetic resin and has a hollow shape whose front is open.
The mirror unit 12 is housed inside the mirror housing 13, and the mirror surface of the mirror body 10 is arranged in the front opening of the mirror housing 13.

The side surface of the above-mentioned mirror base 14 is fixed to the door of the automobile. A mirror housing 13 having a mirror unit 12 attached to the mirror base 14,
It is tiltably attached to the front position (the traveling direction side of the vehicle) of the use position, the rear position (including the storage position), or the front position, the rear position, or the storage position to the use position.

In this way, the vehicle outside mirror device is constructed. This vehicle outside mirror device is equipped with a wiper device of the present invention described later. The vehicle outside mirror device described above is equipped with a mechanism device for remotely adjusting the rotation of the mirror unit 12 including the mirror body 10 and the mirror holder 11 with respect to the mirror housing 13 in the vertical direction and the horizontal direction. There is. Further, in the above-described vehicle outside mirror device, the mirror housing 13 to which the mirror unit 12 is attached is set to the mirror base 14 from the use position to the front position, the rear position, or the storage position, or the front position or the rear position. From the storage position to the use position,
It is equipped with a mechanism that tilts by remote control.

As shown in FIG. 1, the wiper device installed in the above-mentioned vehicle outside mirror device is a drive unit (not shown) installed in the mirror housing 13.
And a wiper arm 2 attached to the drive unit via the wiper shaft 20, and a wiper unit 34 attached to the wiper arm 2.

The above-mentioned drive unit is composed of, for example, a drive motor, a speed reduction mechanism, etc., and is provided inside the above-mentioned mirror housing 14 and on the rear side of the mirror unit 12. This drive unit is an independent unit for driving the wiper unit, or as a drive unit for tilting the mirror unit 12 in the up-down direction and / or the left-right direction with respect to the mirror housing 13 (a drive unit of a remote control type door mirror), or As a drive unit (a drive unit of an electric retractable door mirror) that tilts the mirror housing 13 with the mirror unit 12 from a use position to a front position, a rear position, a storage position, or a front position, a rear position, or a storage position to a use position, It may also be used in common via a driving force transmitting means, a driving force switching means, or the like.
The drive unit is equipped with a wiper shaft 20, and the wiper shaft 20 projects from the rear side of the mirror unit 12 to the front side. Since the wiper shaft 20 is covered with the above-mentioned eaves portion 17, the appearance is improved.

The wiper arm 2 described above is shown in FIGS.
As shown in FIG. 5, for example, a thin and long rectangular plate member made of metal or the like is bent. One end 24 of the wiper arm 2 is bent in a U shape and is fixed to the above-mentioned wiper shaft 20 via a wiper head 23. The other end 25 of the wiper arm 2 has a flat plate shape, and the plate-shaped holder 4 of the wiper unit 34 is rotatably attached to the other end 25 by a rivet 22.

The wiper head 23 is provided with an elastic member (not shown), and as a result, the wiper unit 34 interposes the mirror surface 10 via the wiper arm 2.
It is configured to be pressed against. Also, the above-mentioned means for attaching the wiper unit and the wiper arm 2 is
Other than the rivet 22 described above, a shaft, a push nut, or the like may be used.

The wiper unit 34 has a mirror surface 1
The linear wiper 3 for wiping off the substance attached to the 0 and the plate-shaped holder 4 in which the linear wiper 3 is stretched and held are provided.
Of both ends of the wiper unit 34, one end farther from the wiper shaft 20 (the rotation shaft of the wiper arm 2 with respect to the drive unit) is referred to as a first end 41,
The other end nearer to the wiper shaft 20 is referred to as a second end 42.

The linear wiper 3 has, for example, φ0.7 to φ.
It is composed of a 1.0 synthetic resin string (a single string) or the like. The linear wiper 3 may be made of any material other than the above-mentioned string as long as it can wipe the mirror surface without stretching when stretched by an appropriate tension.
For example, the thread structure is a twisted thread or a braid, and the material is an artificial thread or a natural thread. This linear wiper 3
Engagement portions 30 are provided on both ends of each. That is, in this engaging portion 30, the end portion of the linear wiper 3 is inserted into a tubular fitting or the like, and the tubular fitting or the like is crushed so that the linear wiper 3 is crushed.
It is crimped and fixed to.

As shown in FIGS. 2 to 4, the plate-like holder 4 is made of a long and narrow rectangular plate member and is made of metal or the like having a certain degree of rigidity to withstand bending and twisting. Both ends 41 and 42 of the plate-shaped holder 4
Has a channel shape as shown in FIG.
In addition, engaging grooves 40 are provided at both ends 41 and 42, respectively.

At both edges 41 and 42 of the plate-shaped holder 4, the engaging grooves 30 of the linear wiper 3 are fitted to the edges of the engaging grooves 40.
The linear wiper 3 is stretched and held by the plate-shaped holder 4 by engaging with each other. The tension of the linear wiper 3 with respect to the plate-shaped holder 4 is, for example,
In the linear wiper 3 having a total length of 140 to 150 mm, when a weight of 40 to 50 g is applied to the approximate center of the linear wiper 3, the central length of the linear wiper 3 extends by 2 to 3 mm.

The wiper unit 34 is pressed against the mirror surface 10 by being rotatably attached to the wiper arm 2 as described above, and both ends of the linear wiper 3 are mirrored by both ends of the plate holder 4. The linear wiper 3 is pressed directly against the surface 10, and the intermediate portion of the linear wiper 3 is pressed against the mirror surface 10 with a uniform force via the both ends described above.

In this way, the wiper device mounted on the vehicle outside mirror device is constructed. When the drive unit is driven, the wiper shaft 20 reciprocally rotates,
Via the wiper head 23 and the wiper arm 2, the wiper unit 34 moves from the retracted position to the reciprocal reversal position, and from the reciprocal reversal position to the retracted position.
The object attached to the mirror surface 10 is wiped off.

In the wiper device equipped in the vehicle outside mirror device of the present invention, a parallel state holding mechanism is provided between the wiper arm 2 and the wiper unit 34. This parallel state holding mechanism has a posture changing position (positions of the wiper arm 2 and the wiper unit 34 shown in FIG. 2) from a retracted position (positions of the wiper arm 2 and the wiper unit 34 shown in solid line in FIG. 2). Until then, the wiper unit 2 and the wiper arm 34 are maintained in a substantially parallel state. That is,
One side edge of the plate-shaped holder 4 (edge on the lower side when the above vehicle outside mirror device is fixed to a door of an automobile) 43
Is bent to the side opposite to the mirror surface 10, and a leaf spring portion 44 is provided substantially in the middle of the bent piece 43. The leaf spring portion 44 is the other end portion 25 of the wiper arm 2.
Elastically welded to. As a result, FIG. 3 (A) and FIG.
As shown in (A), the wiper unit 34 is constantly urged in the counterclockwise direction about the axis of the rivet 22 with respect to the wiper arm 2, and the wiper unit 34 and the wiper arm 2 are substantially parallel to each other. Will be held at.

The plate spring portion 44 is formed by forming a U-shaped groove in the bent piece 43 of the plate-shaped holder 4 to form a spring plate portion, and bending the tip of the spring plate portion into a U-shape. Is. On the other hand, the wiper arm 2 has an arc-shaped edge 27 at the other end 25.
Is provided with a linear edge 28. The leaf spring portion 44 of the wiper unit 34 elastically contacts the straight edge 28 of the wiper arm 2.

Here, one side edge (the upper side edge when the above vehicle outside mirror device is fixed to the door of the vehicle) 26 of the middle portion of the wiper arm 2 is bent toward the mirror surface 10 side. Therefore, when the wiper unit 34 tries to rotate with respect to the wiper arm 2 in the arrow direction (counterclockwise direction) in FIG. 3A and FIG. The second end 42 of the wiper unit 34 abuts on the bent piece 26, so that the above-described counterclockwise rotation of the wiper unit 34 can be prevented.

Further, the wiper device equipped in the vehicle outside mirror device of the present invention is provided with posture changing means. The posture changing means is configured to move from the posture changing position to the reciprocating reversal position (the wiper arm 2 shown by a chain double-dashed line in FIG. 2).
And the position of the wiper unit 34), the wiper unit 34 is rotated in a direction (clockwise direction) opposite to the forward movement direction (counterclockwise direction) of the wiper arm 2 to change the posture of the wiper unit 34. . This attitude changing means is composed of a convex portion 150 provided at the center of the lower side of the rim 15 of the mirror holder 12, and a first end portion 41 of the wiper unit that abuts on the convex portion.

Further, the wiper device equipped in the vehicle outside mirror device of the present invention is provided with posture returning means. The posture returning means moves the wiper unit 34 in the backward movement direction (clockwise direction) of the wiper unit 34 from the posture returning position (the positions of the wiper arm 2 and the wiper unit 34 shown by the three-dot chain line in FIG. 2) to the retracted position. ) Is rotated in the opposite direction (counterclockwise) to return the posture of the wiper unit 34 to make the wiper unit 34 and the wiper arm 2 substantially parallel to each other. This posture returning means is provided by the rim 15 of the mirror holder 12.
Abutment portion 153 provided on the inner wall of the eaves portion 17 of the
And the first end portion 41 of the wiper unit that contacts the contact portion 153.

The wiper device equipped in the vehicle outside mirror device of the present invention in this embodiment is constituted as described above, and its operation will be described below. First, the drive unit of the wiper device is driven. Then, the wiper shaft 20 reciprocally rotates, and the wiper head 23
And the wiper unit 2 via the wiper arm 2.
As shown in FIG. 2, the vehicle moves from the retracted position (indicated by the solid line in FIG. 2) to the reciprocating reversal position (indicated by the alternate long and two short dashes line in FIG. 2) through the posture conversion position (indicated by the alternate long and short dashed line in FIG. 2). Further, from the reciprocal reversal position to the attitude return position (indicated by the three-dot chain line in FIG. 2), it is moved back to the retracted position to wipe off the substance attached to the mirror surface 10.

The reciprocating movement of the wiper unit 340 will be described in more detail below with reference to FIGS. 2 and 6A and 6B. That is, when the wiper shaft 20 rotates counterclockwise, the wiper unit 34 and the wiper arm 2 are substantially parallel to each other (straight line state) via the wiper head 23 from the retracted position to the posture conversion position. The forward movement (forward rotation about the wiper shaft 20) is performed in the direction of the solid line arrow (counterclockwise). When the wiper unit 34 and the wiper arm 2 reach the posture changing position, the first end portion 41 of the wiper unit 34 contacts the convex portion 150 of the rim 15.

Further, when the wiper shaft 20 rotates counterclockwise, the wiper arm 2 moves forward via the wiper head 23 in the direction of the alternate long and short dash line (counterclockwise direction) from the posture changing position to the reversing position. To do. On the other hand, the first end portion 41 of the wiper unit 34 has the protrusion 15 of the rim 15.
Since the wiper unit 34 is in contact with 0, the wiper unit 34 resists the spring force of the leaf spring portion 44 of the parallel state holding mechanism from the posture changing position to the reversing position, and the wiper arm 2 rotates about the axis of the rivet 22. The posture is changed by rotating in the direction opposite to the forward movement direction (clockwise direction). At this time, the leaf spring portion 4
Since 4 is elastically abutted on the arc edge 27 of the other end 25 of the wiper arm 2, the posture (form) of the wiper unit 34 and the wiper arm 2 at the reciprocal reversal position is maintained.

When the wiper unit 34 is located at the reverse position, the second end portion 42 side of the wiper unit 34 is located above the first end portion 41 side as shown in FIG. Thus, the raindrops wiped from the mirror surface 10 by the linear wiper 3 of the wiper unit 34 travels along the linear wiper 3 and flows down from the upper second end 42 side to the lower first end 41 side to the mirror. It is discharged to the outside of the unit 12. Although not shown in the figure,
A drain port is provided below the rim 15.

When the wiper unit 34 and the wiper arm 2 reach the reverse position, the wiper shaft 20 rotates clockwise. Then, the wiper unit 34 and the wiper arm 2 are moved back in the direction of the two-dot chain line arrow (clockwise) from the reciprocal reversal position to the posture return position (returning around the wiper shaft 20) while maintaining the shape in the reversing position. rotation)
To do. When the wiper unit 34 and the wiper arm 2 reach the posture returning position, the first end portion 41 of the wiper unit 34 contacts the contact portion 153 of the rim 15.

Further, when the wiper shaft 20 rotates in the clockwise direction, the wiper arm 2 moves back through the wiper head 23 in the three-dot chain line arrow direction (clockwise direction) from the posture returning position to the retracted position. . On the other hand, the first end 41 of the wiper unit 34 is the rim 1 in the retracted position.
5, the wiper unit 34 rotates in a direction (counterclockwise) opposite to the backward movement of the wiper arm 2 about the axis of the rivet 22 from the posture returning position to the retracted position. Then, the posture of the wiper unit 34 is restored.

When the wiper unit 34 and the wiper arm 2 reach the retracted position, the rotation of the wiper shaft 20 is stopped and the wiper unit 34 and the wiper arm 2 are housed in the eaves portion 17 in a substantially parallel state. . At this time, the leaf spring portion 44 elastically abuts the straight edge 28 of the wiper arm 2, so that the wiper unit 34 and the wiper arm 2 are maintained in a substantially parallel state again. Further, if the discharge hole 161 is provided in the portion corresponding to the eaves portion 17 of the back plate 16, water or the like wiped from the mirror surface 10 by the wiper unit 34 is discharged to the outside of the mirror unit 12 through the discharge hole 161. It

In this way, the wiper unit 34 reciprocates between the retracted position and the reciprocal reversal position to wipe off the substance adhering to the mirror surface 10. Here, by changing and returning the posture of the wiper unit 34 during the reciprocating movement of the wiper unit 34, the wiper unit 34 is shown in the dotted portions in FIGS. 6 (A) and 6 (B). As described above, the mirror surface 10 meanders in a substantially S-shape and reciprocates, so that the mirror surface 10 can be wiped over a wide range.

The above-mentioned reciprocating movement of the wiper unit 34 is performed once, continuously, or intermittently. Further, although the wiper unit 34 in the above-described embodiment is the one in which the linear wiper 3 is stretched and held on the plate-shaped holder 40, a wiper unit in which a rubber ribbon having an inverted triangular cross section or a semicircle is provided on the plate-shaped holder, or A wiper unit or the like in which a rubber ribbon is held by a holder or a stay may be used.

In the wiper device equipped in the vehicle outside mirror device of the present invention in this embodiment,
In the mirror holder 12, a levitation means for levitating the wiper unit 34 approaching the reciprocal reversal position from the mirror surface 10, and the above-mentioned wiper unit 34 reciprocally reversing after being levitated from the levitating position of the mirror surface 10 to a predetermined reciprocal reversal position side. And descending means for descending to the position.

In the levitation means, as shown in FIGS. 7 and 8, the second end portion 42 of the wiper unit 34 rises and the portion of the wiper unit 34 on the second end portion 42 side floats from the mirror surface 10. The sloping surface 151 has an upward slope for the purpose of being provided at the lower right corner of the rim 15.

Further, as shown in FIGS. 7 and 8, the lowering means is guided by the guide convex portion 45 provided on the second end portion 42 of the wiper unit 34, which goes up the inclined surface 151. Guide groove 152 for lowering the wiper unit 34 to the predetermined position on the mirror surface 10.
Consists of The guide groove 152 is provided substantially at the top of the inclined surface 151 and in a direction intersecting the reciprocating movement direction of the wiper unit 34.

Next, the operation of the above-mentioned floating means 151 and descending means 152 will be described with reference to FIGS. 7 and 8A and 8B. 7 and 8 (A) and (B)
In the figure, the wiper unit 34 shown by the one-dot chain line is in the state of approaching the reciprocating reversal position, the wiper unit 34 shown by the two-dot chain line is in the position of reciprocating reversal position and floating, and the wiper unit 34 shown by the thin line is the mirror surface. The state of descending to 10 is shown.

First, when the wiper unit 34 approaches the reciprocal reversal position, the second end 4 of the wiper unit 34 is closed.
2 goes up on the slope 151 of the levitation means,
The portion of the wiper unit 34 on the second end 42 side floats above the mirror surface 10.

Next, when the wiper unit 34 is located at the reciprocal reversal position, the guide convex portion 45 of the wiper unit 34 engages with the guide groove 152 of the descending means, and the portion of the wiper unit 34 on the second end 42 side. Remains floating above the mirror surface 10, and the forward movement of the wiper unit 34 stops. At this time, the linear wiper 3 of the wiper unit 34 floats above the mirror surface 10 and gets over the raindrops W or the like that have wiped the mirror surface 10.

When the above-mentioned wiper unit 34 is positioned at the reciprocal reversal position, the wiper shaft 20 rotates clockwise and the wiper unit 34 moves back. At this time,
Since the guide convex portion 45 of the wiper unit 34 is engaged with the guide groove 152 of the lowering means, the wiper unit 3
4 is guided by the guide groove 152 without returning from the state of the two-dot chain line to the state of the one-dot chain line as shown in FIG.
Move in the direction of the arrow in the middle. This wiper unit 34
When the guide convex portion 45 of is removed from the guide groove 152, the wiper unit 34 descends to the mirror surface 10.

At this time, the wiper unit 3 shown by a thin line
The descending position of 4 is located on the reciprocal reversal position side of the wiper unit 34, which is indicated by the two-dot chain line, from the floating position of the wiper unit 34, which is indicated by the one-dot chain line. As a result, the linear wiper 3 of the wiper unit 34 floats from the mirror surface 10 and can reliably climb over the raindrops W. By overcoming the raindrops W and the like, the raindrops W and the like that have passed over can be reliably wiped by the linear wiper 3 of the wiper unit 34. That is, when the wiper unit 34 in the state shown by the alternate long and short dash line in FIG. 8 (A) is moved back, the linear wiper 3 drags raindrops W or the like located on the forward movement side of the linear wiper 3 as it is, and then the mirror surface. 10 may get wet, but in the case of the present invention, such a problem does not occur.

When the wiper unit 34 descends to the mirror surface 10, the wiper unit 34 moves back and returns to the retracted position. At this retracted position, the raindrops W etc. wiped by the linear wiper 3 are discharged to the outside of the mirror unit 12 through the discharge holes 161 and the like.

In the above embodiment, the levitation means 1
The operation of the wiper unit 3
The second end portion of No. 4 (which is positioned higher than the first step portion at the reciprocating reversal position) is targeted.
Both ends or the first end may be targeted. Further, in the above-mentioned embodiment, the levitation means 151 and the descending means 1
Although 52 is provided, the floating means 151 and the lowering means 15 are provided.
2 does not necessarily have to be provided.

9 and 10 show a second embodiment of the wiper device of the present invention. This embodiment shows a modification of the parallel state holding mechanism. In the figure, the same symbols as those in FIGS. 1 to 8 indicate the same components. The parallel state holding mechanism includes an engagement hole 50 provided in the other end 25 of the wiper arm 2 and an engagement protrusion 51 provided in the plate-shaped holder 4 of the wiper unit 34. By the detachable engagement of the engagement protrusion 51 with the engagement hole 50, the wiper arm 2 and the wiper unit 34 are held in parallel. When the wiper arm 2 and the wiper unit 34 reach the posture conversion position, the engagement state between the engagement protrusion 51 and the engagement hole 50 is released,
Further, when the wiper arm 2 and the wiper unit 34 reach the retracted position, the above-mentioned engaging protrusion 51 and the engaging hole 50 are engaged again.

11 and 12 show a wiper device according to a third embodiment of the present invention. This embodiment shows a modification of the parallel state holding mechanism. In the figure, the same reference numerals as those in FIGS. 1 to 10 indicate the same components. The parallel state holding mechanism includes a scissor spring 52 interposed between the wiper arm 2 and the plate-shaped holder 4 of the wiper unit 34. The spring force of the scissors spring 52 holds the wiper arm 2 and the wiper unit 34 in parallel with each other. When the wiper arm 2 and the wiper unit 34 reach the posture changing position, the wiper unit 34 rotates with respect to the wiper arm 2 against the spring force of the scissor spring 52 described above, and the wiper arm 2 and the wiper unit 34 When is separated from the reciprocal reversal position, the wiper unit 34 is rotated by the spring force of the scissors spring 52 with respect to the wiper arm 2 and automatically returns to the original parallel state. The scissors spring 52 also serves as a posture returning means.

13 and 14 show a wiper device according to a fourth embodiment of the present invention. This embodiment shows a modification of the parallel state holding mechanism. In the figure, the same reference numerals as those in FIGS. 1 to 12 indicate the same parts. The parallel state holding mechanism includes a rubber ring 53 fitted between the other end 25 of the wiper arm 2 and the plate-shaped holder 4 of the wiper unit 34 and fitted on the rivet 22. The friction of the rubber ring 53 holds the wiper arm 2 and the wiper unit 34 in a parallel state. When the wiper arm 2 and the wiper unit 34 reach the posture changing position, the wiper unit 34 rotates with respect to the wiper arm 2 against the friction of the rubber ring 53 described above, and the wiper arm 2 and the wiper unit 3 also.
When 4 and 4 reach the retracted position, the wiper unit 34 rotates against the wiper arm 2 against the friction of the rubber ring 53 and returns to the original state.

[0052]

As is apparent from the above, the wiper device provided in the vehicle outside mirror device of the present invention can obtain a wide wiping range.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a wiper device equipped in a vehicle outside mirror device of the present invention, in which a part of a vehicle outside mirror device equipped with the wiper device of the present invention is cut away. Is.

FIG. 2 is a front view of the mirror unit of the vehicle outside mirror device equipped with the wiper device of the present invention with the rim of the mirror holder removed.

FIG. 3A is a front view of a wiper arm and a wiper unit of the wiper device of the present invention, and FIG. 3B is a bottom view.

FIG. 4A is a partial front view showing a parallel state holding mechanism of a wiper device of the present invention, and FIG. 4B is a bottom view.

5 is a sectional view taken along line VV in FIG.

FIG. 6A is an explanatory view showing a wiping range in forward movement of the wiper device of the present invention, and FIG. 6B is an explanatory view showing a wiping range in backward movement.

FIG. 7 is an explanatory view showing the operation of the floating means and the descending means.

FIG. 8A is VIIIA-VIIIA in FIG.
A line sectional view, (B) is VIIIB-VIII in FIG. 7.
It is a B sectional view.

FIG. 9 is a sectional view of a portion of the parallel state holding mechanism according to the second embodiment of the present invention.

FIG. 10 is an exploded perspective view of a portion of the parallel state holding mechanism.

FIG. 11 shows a third embodiment of the present invention and is a cross-sectional view of a portion of the parallel state holding mechanism.

FIG. 12 is an exploded perspective view of a portion of the parallel state holding mechanism.

FIG. 13 is a sectional view of a portion of the parallel state holding mechanism according to the fourth embodiment of the present invention.

FIG. 14 is an exploded perspective view of a portion of the parallel state holding mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outside mirror device for vehicles, 10 ... Mirror body, 11 ... Mirror holder, 12 ... Mirror unit, 1
3 ... Mirror housing, 14 ... Mirror base, 15 ... Rim, 150 ... Convex part (posture changing means), 151 ... Inclined surface (upward means), 152 ... Guide groove (downward means), 153
... abutting part (posture returning means), 16 ... back plate, 1
7 ... Eaves part, 2 ... Wiper arm, 20 ... Wiper shaft, 2
2 ... Rivet, 23 ... Wiper head, 24 ... One end,
25 ... The other end part, 26 ... Bending piece, 27 ... Arc edge, 28 ... Straight edge, 3 ... Linear wiper, 30 ... Engagement part, 34 ... Wiper unit, 4 ... Plate holder, 40 ... Engagement groove , 41 ... First end portion (posture returning means), 42 ... Second end portion (posture changing means), 43 ... Bending piece, 44 ... Leaf spring (parallel state maintaining mechanism), 45 ... Guide convex portion, 50 ... Engagement holes, 51 ... Engagement protrusions, 52 ... Scissors springs, 53 ... Rubber rings.

Claims (10)

[Claims] 1. A wiper device equipped in a vehicle outside mirror device, comprising: a mirror unit including a mirror body and a mirror holder; and a mirror housing to which the mirror unit is attached, the wiper device being provided in the mirror housing. A drive unit installed, a wiper arm attached to the drive unit, and a wiper unit attached to the wiper arm, wherein the drive unit is driven to move from a retracted position to a posture changing position via the wiper arm. A reciprocating reversal position, and a retreating position from the reciprocating reversal position to a retreat position to wipe away the matter adhering to the reflecting surface of the mirror body. From the position to the posture conversion position, the wiper unit A parallel state holding mechanism that keeps the wiper arm and the wiper arm in a substantially parallel state, and rotates the wiper unit in a direction opposite to the forward movement direction of the wiper arm between the posture changing position and the reciprocal reversal position. And a posture changing means for changing the posture of the wiper unit, and a posture of the wiper unit by rotating the wiper unit in a direction opposite to the backward movement direction of the wiper arm between the reciprocal reversal position and the retracted position. And a posture returning means for returning the wiper unit and the wiper arm to a substantially parallel state, and a wiper device mounted on an outside mirror device for a vehicle. 2. The outside mirror device for a vehicle according to claim 1, wherein the parallel state holding mechanism includes a leaf spring interposed between the wiper unit and the wiper arm. Wiper device. 3. The vehicle outside according to claim 1, wherein the parallel state holding mechanism includes an engaging projection and an engaging hole provided on the wiper unit and the wiper arm. A wiper device installed in the mirror device. 4. The outside mirror apparatus for a vehicle according to claim 1, wherein the parallel state holding mechanism includes a scissor spring interposed between the wiper unit and the wiper arm. Wiper device. 5. The outside mirror apparatus for a vehicle according to claim 1, wherein the parallel state holding mechanism includes a rubber ring interposed between the wiper unit and the wiper arm. Wiper device. 6. The posture changing means is a convex portion provided on the mirror holder and one end portion of the wiper unit that abuts on the convex portion, and is different from a rotation shaft of the wiper arm with respect to the drive unit. The first end portion of the wiper unit on the far side, and the wiper device mounted on the vehicle outside mirror device according to claim 1, 2, 3, 4, or 5. 7. The posture returning means is an abutment portion provided on the mirror holder and one end of the wiper unit abutting the abutment portion, and the rotation of the wiper arm with respect to the drive unit. The first end portion of the wiper unit farther from the axis, and the wiper device installed in the vehicle outside mirror device according to claim 1, 2, 3, 5, or 6. 8. The vehicle outside mirror device according to claim 1, wherein the posture returning means comprises a scissor spring interposed between the wiper unit and the wiper arm. Wiper device. 9. The mirror holder includes a levitation means for levitating the wiper unit approaching a reciprocal reversal position from the reflection surface, and a reciprocating reversal reversal position of the wiper unit after levitating from the levitation position of the reflection surface to a reciprocal reversal position. And descending means for descending to a predetermined position on the side, respectively.
A wiper device installed in the vehicle outside mirror device according to items 7 and 8. 10. The levitation means is the other end portion of the wiper unit, and the second end portion of the wiper unit closer to a rotation axis of the wiper arm with respect to the drive unit rises to raise the wiper unit. The unit is composed of an inclined surface having an upward slope for levitating from the reflection surface, and the descending means is guided by a guide convex portion provided at a second end of the wiper unit which has climbed up the inclined surface. The wiper device provided in the vehicle outside mirror device according to claim 9, wherein the wiper unit includes a guide groove for moving down to the predetermined position of the reflection surface.