JPH07144615A - Wiper device of outside mirror device for vehicle - Google Patents

Abstract

PURPOSE:To reduce dimension, quantity of parts, and simplify the assembly work. CONSTITUTION:A driving part is installed on an outside mirror device for vehicle, and the basic end of a wiper arm 1 is installed at the driving part, and one end of a string 3 is fixed at the top end of the wiper arm 1, and the other end of the string 3 is connected with a tension applying means, and the string 3 is laid by a prescribed tension. Accordingly, if the driving part is driven, the string 3 which is laid with the prescribed tension wipes off the mirror surface of a mirror body 100. Since the string 3 connected with the tension applying means is installed on the wiper arm 1, the quantity of parts can be reduced in comparison with the case of the conventional wiper device, and the assembly work can be simpifiled, and the height and width can be reduced, and the dimension of the whole device can be reduced. In particular, the wiping area can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in an outside mirror device for a vehicle and has a surface of a mirror body of the outside mirror device (hereinafter, simply referred to as a mirror surface).
More particularly, the present invention relates to a wiper device for a vehicle outside mirror device that can be downsized, the number of parts can be reduced, and the assembling work can be simplified.

[0002]

2. Description of the Related Art A conventional wiper device in this type of vehicle outside mirror device will be described with reference to FIGS.

In the figure, 100 is a mirror body. The mirror body 100 is formed by providing a reflective film on the back surface of a transparent plate such as a glass plate having a substantially rectangular shape. The mirror surface on the surface of the mirror body 100 may be a flat surface or a cubic curved surface. In the figure, 101 is a mirror holder. The mirror holder 101 is made of synthetic resin, for example, and holds the mirror body 100. This mirror holder 1
Reference numeral 01 is a so-called back plate that covers the mirror body 100 from the entire periphery of the mirror surface to the back surface to protect the mirror body 100. The mirror holder 101 has an opening 120 on the surface mirror surface side of the mirror body 100. In the figure, 10
Reference numeral 2 denotes a mirror housing made of synthetic resin, for example. An assembly of the mirror body 100 and the mirror holder 101 is housed inside the mirror housing 102, and the assembly of the mirror body 100 and the mirror holder 101 is installed in the mirror housing 102, for example, a pivot mechanism or the like. Attached rotatably by
Further, the mirror surface of the mirror body 100 is arranged in the front opening of the mirror housing 102. In the figure, 103 is a mirror base. This mirror base 1
03 is fixed to the vehicle body (not shown). The mirror housing 103 is included in the mirror base 103 (including the mirror body 100 and the mirror holder 101).
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 configured.

In the drawing, reference numeral 104 is a wiper device in the above-mentioned vehicle outside mirror device. The wiper device 104 includes, for example, a drive motor (not shown) installed in the vehicle outside mirror device, and the drive motor equipped with the drive motor via a reduction mechanism, a power transmission mechanism, and the like, and the mirror housing 102. A wiper shaft 117 (a drive unit is composed of the wiper shaft 117, the drive motor, the speed reduction mechanism, the power transmission means, etc.), and a wiper arm 105 having a base end mounted on the wiper shaft 117. A bracket 107 rotatably attached to the tip of the wiper arm 105 via a rivet 106 that is substantially perpendicular to the mirror surface (wiping surface).
And a wiper blade 109 rotatably attached to the bracket 107 via a rivet 108 substantially parallel to the mirror surface. The wiper blade 1
Reference numeral 09 denotes a wiping unit 1 having a certain height for wiping while bending the surface mirror surface of the mirror body 100.
10 and an engaging groove 111 and a mounting portion 118 at the top and bottom, and a blade rubber 11 which is located above the mounting portion 118 of the blade rubber 112.
The vertibra 113 for pressing 2 along the mirror surface of the mirror body 100 (curvature of the mirror surface, etc.).
Has engaging claws 114 at both ends, and the engaging claws 114 are respectively engaged with the engaging grooves 11 of the blade rubber 112 to move the blade rubber 112 to the vertibra 113.
And a yoke 115 for holding the same through. The yoke 115 of the wiper blade 109 is the rivet 108.
It is attached to the bracket 107 via. Thus, when the drive motor of the drive unit of the wiper device is driven, the wiper blade 109 reciprocates via the wiper arm 105 and the bracket 107, and the wiping unit 110 of the blade rubber 112 of the wiper blade 109.
While bending, the raindrops, waterdrops and the like adhering to the surface mirror surface (wiping surface) of the mirror body 100 of the vehicle outside mirror device are wiped away.

The reference numeral 116 shown by the alternate long and short dash line in FIG. 9 is an eaves portion. The eaves portion 116 is formed by extending the upper edge portion of the front opening of the mirror holder 101 of the vehicle outside mirror device described above. The wiper blade 109 and the like are housed between the eaves portion 116 and the mirror body 100 when the wiper device 104 is stopped.

The above-described vehicle outside mirror device is equipped with a mechanism device for remotely adjusting the mirror body 100 and the mirror holder 101 with respect to the mirror housing 102 in the vertical and horizontal directions. Has been done. In addition, in the above-described vehicle outside mirror device, the mirror housing 102 (including the mirror body 100 and the mirror holder 101) with respect to the mirror base 103 is located in a front position, a rear position, or a storage position from a use position. In addition, a mechanical device that is tilted by remote control is provided at a front position, a rear position, or a storage position to a use position.

[0007]

However, the wiper device in the above-mentioned conventional vehicle outside mirror device is the blade rubber 112 and the blade rubber 11 thereof.
2 and a yoke 11 for connecting the blade rubber 112 and the vertibra 113.
The number of parts is large because it has five parts. In addition, the above-mentioned conventional wiper device uses the blade rubber 11
2 and set the vertibra 113 on the top of the blade rubber 112, and engage the engaging claw 1
14 is engaged, and the yoke 115 holds the blade rubber 112 via the vertibra 113, so that the assembling work is troublesome. Further, in the above-mentioned conventional wiper device, the vertibra 113 is set on the blade rubber 112 having the wiping portion 110 having a certain height, and the yoke 115 is further placed thereon.
Since it is to set the wiper blade 1
The height of 04 becomes large. In addition, the engaging claw 114 of the yoke 115 allows the blade rubber 112 and the vertibra 113.
The width of the wiper blade 104 is large because it is sandwiched and held from both sides. Therefore, the size of the entire apparatus is increased, and as a result, the storage range of the eaves portion 116 is increased, and the effective area of the mirror surface of the mirror body 100 is reduced accordingly.

An object of the present invention is to provide a wiper device in an outside mirror device for a vehicle, which can reduce the number of parts, simplify the assembling work, and reduce the size.

[0009]

In order to achieve the above object, the present invention provides a vehicle outside mirror device with a drive unit, and the drive unit is provided with a base end of a wiper arm. One end of the linear wiping member is fixed to the tip, the other end of the linear wiping member is connected to a tension applying means, and a predetermined tension is applied to the linear wiping member. .

Further, the present invention is characterized in that the wiper arm is configured to reciprocally rotate and expand and contract along the peripheral edge of the opening on the mirror surface side of the mirror holder by the drive of the drive unit.

[0011]

According to the present invention, when the drive unit is driven by the above-mentioned structure, the linear wiping member stretched with a predetermined tension wipes the surface mirror surface of the mirror body of the vehicle outside mirror device. . Since the present invention comprises the linear wiping member and the tension applying means for applying a predetermined tension to the linear wiping member, the number of parts can be reduced as compared with the conventional wiper device. Further, according to the present invention, since the other end of the linear wiping member whose one end is connected to the tension applying means is only fixed to the tip of the wiper arm, the assembling work is simple as compared with the conventional wiper device. . Furthermore, since the present invention stretches and holds the linear wiping member along the wiper arm, its height and width can be reduced as compared with the conventional wiper device,
The entire device can be downsized.

Further, according to the present invention, since the wiper arm is configured to expand and contract with reciprocating rotation, the wiping area of the mirror surface of the mirror body can be increased.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, two examples of embodiments of the wiper device in the vehicle outside mirror device of the present invention will be specifically described with reference to FIGS. 1 to 8. 1 to 6 show a first embodiment of a wiper device in a vehicle outside mirror device of the present invention. In the figure, the same symbols as those in FIGS. 9 to 13 indicate the same components.

In the figure, 121 is a mirror holder 101.
Is a guide portion provided on the periphery of the opening portion (opening portion on the front surface mirror surface side of the mirror body 100). As shown in FIG. 2, the guide portion 121 has a concave spherical surface shape,
At least the range in which the wiper arm 1 described later reciprocally rotates in the periphery of the opening 120 of the mirror holder 101 (that is, the string 3 described below is the mirror body 1).
No. 00 of the surface mirror surface is provided).

In the figure, 1 is a wiper arm.
The wiper arm 1 is a telescopic arm, and as shown in FIGS. 2 and 4, includes a hollow first arm 11 having a cylindrical shape and a second arm 12 having a cylindrical shape, for example. The one end of the second arm 12 is accommodated in the first arm 11 from the one end of the first arm 11 so as to be slidable in the axial direction (the axial directions of the first arm 11 and the second arm 12). In the first arm 11, a compression coil spring 10 is interposed in a compressed state between one end of the first arm 11 and one end of the second arm 12, and the second arm 12 is attached to the first arm 11. Always urge in a contracting direction. The other end of the first arm 11 is fixed to the wiper shaft 117, and the wiper arm 1 is arranged substantially parallel to the mirror surface of the mirror body 100. on the other hand,
A spherical convex portion 13 is integrally provided on the other end of the second arm 12,
The spherical convex portion 13 is used as the guide portion 1 of the mirror holder 101.
21 is engaged. As a result, the wiper arm 1 described above
Is reciprocally rotated via the wiper shaft 117 by the drive of the drive unit, and the spherical convex portion 13 is moved by the mirror holder 101.
Along with the reciprocating movement along the guide portion 121 of the first
The second arm 12 is configured to expand and contract with respect to the arm 11. On the lower surface of the other end of the second arm 12, a protrusion 14 for pressing the string 3 described later is integrally provided. The second arm 1 of the wiper arm 1 described above
In addition to the two spherical convex portions 13, as shown in FIG. 4, a roller that rotatably engages with the guide portion 121 of the mirror holder 101 may be used. Further, in this embodiment, the wiper shaft 117 includes a mirror body 1 via a cylindrical member (for example, a sleeve) 119 as shown in FIG.
00 is provided so as to protrude from the mirror surface. In addition,
The wiper shaft 117 may be projected from the mirror body 100 as in this embodiment, or may be projected from the mirror holder 101 or the mirror housing 102.
It may be projected from.

In the figure, 3 is a string as a linear wiping member. This string 3 is, for example, φ0.7
Although a thread made of a synthetic resin (a single thread) having a diameter of up to φ1.0 was used, the material is not limited to this and may be any material that can wipe the mirror surface without stretching when stretched with an appropriate tension. Good.
For example, the structure of the yarn is a single single yarn, a twisted yarn, a braid, or the like, and the material is an artificial yarn or a natural yarn. One end of the string 3 is fixed to the base portion of the spherical convex portion 13 of the second arm 12 of the wiper arm 1 with a stopper or the like 30, and one end of the string 3 is fixed by the convex portion 14 of the wiper arm 1 to the mirror body 100. Press on the mirror surface of. On the other hand, as shown in FIG. 3, the other end of the string 3 is connected to a tension applying means 4 described later so that the string 3 has a predetermined tension between the wiper arm 1 and the tension applying means 4 described later. The string 3 is stretched and brought into close contact with the mirror surface of the mirror body 100.

In the figure, 4 is a tension applying means. As shown in FIG. 3, the tension applying means 4 has a spring holder 40 provided in the mirror holder 101 on the back side of the mirror body 100, and a tensioner coil spring (compression coil spring) 41 is housed in the holder 40. To do. On the other hand, the mirror holder 101 is provided with the thread hole 42 of the tube member, and the mirror body 100 is provided with the through hole 43. Then, the other end of the string 3 is drawn into the housing portion 40 through the through hole 43 and the thread hole 42 and connected to the tensioner coil spring 41, and the string 3 is attached in a direction to be constantly drawn into the housing portion 40. Energize. As a result, the string 3 is tightly attached to the surface mirror surface of the mirror body 100 with a predetermined tension by the tensioner coil spring 41. Note that FIG. 3 is a schematic cross-sectional view in which the vicinity of the central portion of the above-mentioned tension applying means 4 is broken and cut and drawn.

The wiper device of the present invention in this embodiment has the above-mentioned structure, and its operation will be described below. First, the drive unit of the wiper device is driven. Then, the wiper arm 1 reciprocally rotates within a predetermined range from the solid line in FIG. 1 to the one-dot chain line to the two-dot chain line, and from the two-dot chain line to the one-dot chain line to the solid line, and the wiper arm 1 The second arm 12 of the wiper arm 1 expands and contracts with respect to the first arm 11 with the reciprocating rotation of the. The string 3 stretched between the wiper arm 1 and the tension applying means 4 with a predetermined tension by the reciprocating rotation and expansion and contraction of the wiper arm 1 described above causes the mirror body 100 of the vehicle outside mirror device.
Wipe off and remove raindrops and water drops that have adhered to the mirror surface of the. In particular, in the wiper device of the present invention in this embodiment, the wiper arm 1 is configured to expand and contract with reciprocating rotation, so that the wiping area of the mirror surface of the mirror body 100 can be increased.

Since the wiper device of the present invention in this embodiment comprises the string 3, the wiper arm 1 and the tension applying means 4 in which the string 3 is stretched with a predetermined tension, Compared with the above-mentioned conventional wiper device shown in FIGS. 9 to 13, the number of parts is small. Further, in the wiper device of the present invention in this embodiment, the string 3 whose one end is connected to the tension applying means 4 is used.
Since the other end is simply fixed to the wiper arm 1, the assembling work can be simplified. Further, since the wiper device of the present invention in this embodiment stretches and holds the string 3 along the wiper arm 1, its height (the wiper arm 1 and the string 3 is larger than that of the conventional wiper device. And the width (width between the wiper arm 1 and the string 3) can be reduced. As a result, the eaves portion 116 for accommodating the wiper arm 1, the string 3 and the like can be downsized, so that the effective area of the front mirror surface of the mirror body 100 of the vehicle outside mirror device can be used correspondingly. Furthermore, since the wiper device of the present invention in this embodiment uses the string 3, the following operational effects can be achieved. 1. Since the contact area between the string 3 and the surface mirror surface of the mirror body 100 is small, the driving force of the driving unit of the wiper device is correspondingly small, and the entire device including the driving unit can be downsized. The cost can be reduced. 2. Since the blade rubber 112 does not turn over like the wiping unit 110, there is no turning sound. 3. Since the pressing force of the blade rubber 112 against the mirror surface of the mirror body 100 does not become uneven like the wiping part 110, judder is unlikely to occur. 4. Since the artificial thread string 3 can be colored according to the color of the mirror surface of the mirror body 100, or the artificial thread string 3 and the synthetic resin yoke 2 can be made transparent, the string 3 and the yoke can be made transparent. The 2nd class is less noticeable and looks better. 5. It is easy to adapt to the curvature of the mirror surface of the mirror body 100. That is, when the string 3 is set on the surface mirror surface of the mirror body 100,
If the surface mirror surface of is a curved surface, the string 3 is stretched along the curved surface of the surface mirror surface of the mirror body 100. If the surface mirror surface of the mirror body 100 is a flat surface, the string 3 is The mirror body 100 is stretched along the plane of the surface mirror surface. Moreover, the pressing force of the string 3 on the front surface mirror surface of the mirror body 100 is uniform. Therefore, no matter which mirror surface the mirror body 100 is made of, raindrops and water drops can be reliably wiped off over the entire surface.

5 and 6 show a modification of the tension applying means of the wiper device in the vehicle outside mirror device of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 4 and 9 to 13 indicate the same components. Tension applying means 2 of this example
Is a string winding drum 20 in which the other end of the string 3 is connected and wound, and the string winding drum 2
0 is rotatably supported by a drum shaft 21, a drum cover 22 integrally formed with the drum shaft 21, and the string shaft 20 and the string winding drum 20. A spring spring (spiral leaf spring) 23 that gives a rotational force to 20 is provided. In the figure, 24 is the mainspring 2 described above.
It is a slit for inserting the inner end of 3. The mainspring spring 23 is a well-known member that is widely used for hand-wound clocks and the like, and is composed of a leaf spring formed in a spiral shape. The spiral center side of the main spring 23 is attached to the drum shaft 21,
The outer peripheral end of the mainspring 23 is wound onto the winding drum 2.
When it is attached to 0, when the external rotation force is applied, it is absorbed, and when the external rotation force disappears or is reduced, the rotation force is released. The tension applying means 2 is provided in the mirror body 100.
It is stored in the storage portion 122 of the mirror holder 101 on the back side of the. The tension applying means 2 of this example is the tension applying means 4 described above.
It is possible to achieve the same effect as the above.

7 and 8 show a second embodiment of the wiper device in the vehicle outside mirror device of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 6 and 9 to 13 indicate the same components. In the wiper device of this embodiment, the wiper arm 5 is reciprocally rotated by the drive of the drive unit without expanding and contracting.

In the above embodiment, the drive unit of the wiper device is an independent drive unit for driving the wiper, but the drive unit for tilting the mirror body 100 and the mirror holder 101 in the vertical direction and the horizontal direction, or the mirror. A drive unit (a drive unit for an electric retractable mirror) that tilts the housing 102 (including the mirror body 100 and the mirror holder 101) from a use position to a front position, a rear position, or a storage position, or a front position, a rear position, or a storage position to a use position. )
And the driving force transmission means, the driving force switching means, or the like, may be used in common.

[0023]

As described above, the wiper device in the vehicle outside mirror device of the present invention can be downsized, the number of parts can be reduced, and the assembling work can be simplified.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a partial cross-sectional view of a wiper arm.

FIG. 5 is a partial cross-sectional view showing a modified example of the tension applying means.

FIG. 6 is an exploded perspective view of the same.

FIG. 7 is a front view of a vehicle outside mirror device equipped with the wiper device of the present invention, showing a second embodiment of the wiper device in the vehicle outside mirror device of the present invention.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a front view showing a wiper device in a conventional vehicle outside mirror device, and a vehicle outside mirror device equipped with the conventional wiper device.

10 is a view on arrow X in FIG. 9. FIG.

11 is a sectional view taken along line XI-XI in FIG.

12 is a view on arrow XII in FIG.

FIG. 13 is an exploded perspective view of a yoke, a blade rubber, and a vertibra in a conventional wiper device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wiper arm (extendable type), 10 ... Coil spring, 11 ... 1st arm, 12 ... 2nd arm, 13 ... Spherical convex part, 14 ... String retainer, 15 ... Roller, 2 ... Tension giving means (spring spring type) ) 3 ... string, 3
0 ... Stopper, 4 ... Tension applying means (coil spring type), 5 ... Wiper arm.

Claims (3)

[Claims] 1. An outside mirror device for a vehicle comprising a mirror body, a mirror holder holding the mirror body, and a mirror housing to which the mirror holder is attached, wherein the outside mirror device for a vehicle is equipped with the mirror outside body. A drive unit, a wiper arm equipped with a base end for the drive unit, a linear wiping member having one end fixed to the tip of the wiper arm and wiping the surface of the mirror body, and the other end of the linear wiping member. And a tension applying means for applying a predetermined tension to the linear wiping member. 2. The mirror holder has an opening on the surface side of the mirror body, and a guide portion is provided on the periphery of the opening, and the wiper arm has its tip engaged with the guide portion of the mirror holder. The wiper arm is configured to be reciprocally rotated by the drive of the drive unit, and the wiper arm is expanded and contracted as the tip end is reciprocally moved along the guide unit of the mirror holder.
The wiper device in the vehicle outside mirror device according to claim 1. 3. The wiper device in the vehicle outside mirror device according to claim 1, wherein the wiper arm is reciprocally rotated by the drive of the drive unit without expanding and contracting.