JPS59153637A - Outside mirror with wiper - Google Patents

Abstract

PURPOSE:To always maintain a contact pressure of a wiper blade appropriate by configuring the captioned mirror in such a manner as a wiper support arm is supported by means of a stay provided in one body with a slantingly movable mirror holder and rotating said arm by means of a wiper driving part fitted on the stay. CONSTITUTION:A mirror holder 3 holding a mirror 2 is fitted, through a universal coupling 6, to a mirror driving unit 4 fixed on a mirror body 1. The base end of a wiper arm 12 supporting a wiper blade 11 is supported by a support part 14 on the tip end of a wiper support arm 13 which is extended piercing support parts 15, 16 provided respectively on the mirror holder 3 and a stay 5 fitted to the mirror holder 3. Further, a letter L-shaped shaft arm 17 is fixed to the other end of the wiper support arm 13, and an elliptical hole 27 made in said arm 17 is engaged with a driving pin 26 united in one body with a crank cam 25 rotated by means of a motor 22 which is fixed to a fitting rest 23 on the stay 5. Thus the wiper support arm 13 can be swayed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiper drive mechanism in an outside mirror with a wiper for a vehicle.

In order to ensure the function of the outside mirror when driving in the rain, a model equipped with a wiper to wipe the mirror surface has been proposed, for example in Japanese Utility Model Application Publication No. 56-93708. The center of tilt for adjustment is different from the support center of the wiper device, and when the mirror tilts, the distance between the wiper blade and the mirror surface changes, so the contact pressure between the two changes, ensuring that water droplets are removed reliably. The problem is that some parts are likely to be lost.

The present invention focuses on this point and provides an outside mirror with a wiper in which the contact pressure between the wiper blade and the mirror surface is maintained at an appropriate value throughout the operating range regardless of the mirror's posture, and water droplets are reliably removed. It was done for the purpose of

In order to achieve the above object, the present invention provides a stay projecting from a mirror holder and tilting together with the mirror on the back surface of the mirror, and a wiper shaft having a wiper blade attached to the tip thereof is attached to the stay so as to be freely rotatable. The present invention is characterized in that a wiper driving section is attached to the stay to support the wiper shaft and to provide reciprocating rotation within a certain range to the wiper shaft by being connected to the wiper shaft.

As configured as described above, in the present invention,
In response to the tilting of the mirror, the wiper blade, the wiper shaft that drives the wiper blade, and the wiper drive unit tilt together with the mirror, so their mutual positional relationship does not change, and the wiper blade always wipes the mirror surface with appropriate contact pressure. It is possible.

Next, the present invention will be specifically explained with reference to illustrated embodiments.

1 to 3 show the first embodiment, (1
) is a mirror body, (2) is a mirror, (3) is a mirror holder, (4) is a mirror tilting unit, and (5) is a stay. The mirror body (1) is attached to a car body (not shown), the mirror (2) is held by a mirror boulder (3), and the mirror boulder (3) is attached to a universal joint (6).
The mirror tilting unit (4) is attached to the mirror tilting unit (4) via a fixing means (not shown).
It is fixed to the mirror body (1). As is well known, the mirror tilting unit (4) is provided with a bushing rod (4) at a position eccentric in the vertical and horizontal directions with respect to the universal joint (6).
7) (8), and the Butsch rod [71 (8)
By connecting the ends of each to the mirror holder (3) and driving the bushing rod [71F81 in the axial direction by the built-in motor, the mirror holder (3), that is, the mirror (2), is tilted and the posture of the mirror (2) is adjusted. It is for making adjustments. The stay (5) has a generally U-shaped side surface shape as a whole, and has a mirror tilting unit (4).
) is fixed to the mirror holder (3) in a state surrounding the
It is designed to tilt together with the mirror (2).

(11) is a wiper blade, (12) is a wiper arm, and (13) is a wiper shaft. The wiper blade (II) is attached to the wiper arm (12), and the wiper arm (12) is attached to the tip of the wiper shaft (131). The structure of the wiper blade 01), the wiper arm (121) and the support part (141) is a structure similar to that of a well-known windshield wiper, A built-in spring applies rotational force to the wiper arm (1) in the direction of the mirror (2).The wiper shaft (13) is
It is inserted into the support part 051 (16) provided on the mirror boulder (3) and the stay (5) and is supported so as to be rotatable and not move in the axial direction, and has an L-shaped shaft arm at the end. (17) is fixed.

(21) is a wiper drive unit using a motor shaft as a drive source, the motor (22) is attached to a mounting base (23) protruding from the stay (5), and the protruding shaft (24 has a crank cam). (25) is fixed, and the crank cam (5) is provided with a drive pin (26) at an eccentric position with respect to the output shaft (2. A wiper shaft (
An elongated engagement hole is formed at a position corresponding to the crank cam (25) along the axial direction of 1311, and the drive pin (3) can be engaged with the large end of this engagement hole. be.

This embodiment has the above-mentioned structure, and when the motor (221) is driven to rotate the crank cam (2) in a certain direction, the drive pin (26) rotates in a circle, and the engagement hole (A) is rotated. While sliding on the side edges, push the wiper shaft (
13) and swings the shaft arm (1η).

Therefore, the wiper shirt l-f13) repeats reciprocating shaft rotation at a constant angle, and the wiper blade (11) swings left and right in a fan shape to wipe the surface of the mirror (2). When the mirror tilting unit (4) is operated to change the attitude of the mirror (2), the stay (5) tilts together with the mirror (2), so the mutual positional relationship between the mirror (2) and the wiper blade circle changes. Therefore, the water droplet removal action is performed properly, and the positional relationship between the wiper shaft 03) and the motor does not change, and the driving force is transmitted normally and the operation continues smoothly. be.

FIG. 4 shows an example in which an electromagnetic solenoid (31) is used as the drive source of the wiper drive unit (2D), and the electromagnetic solenoid (31) is fixed on the stay (5) during installation, and the plunger (321) is fixed on the stay (5). A drive pin (26a) is provided at the tip of the solenoid shaft link formed continuously with the solenoid shaft, and the drive pin (26a) is engaged with the engagement hole (5). ), and when the electromagnetic lens 01) is not operating, the shaft arm 0'7) and follower wiper blade 01) are stopped at a position swung to the right. There is.

Here, when the electromagnetic solenoid (31) is energized and activated, the plunger (32) is attracted and the drive pin (26a
) moves to the left and the shaft arm (17) moves accordingly.
The wiper blade αB swings to the left and returns to the right when the electromagnetic slide/id (31) stops energizing, so the wiper blade αB swings to the mirror (
The wiping action is performed by reciprocating the surface of 2) once.

Figure 5 shows an example using a manual wiper drive unit (21), in which a mounting bracket (36) to which one end of the outer tube (351 is attached) is fixed to the mounting base (23) of the stay (5). A drive pin (26b) is provided at the tip of the inner wire inserted into the outer tube (35), and this drive pin (26b) is engaged with the engagement hole.

Both the outer tube (35) and the inner wire Gη are flexible, and the other end is led to, for example, a driver's seat so that the driver can manually push and pull the inner wire (9).

With this configuration, when the inner wire (9) is pushed or pulled, the shaft arm (17) swings and the wiper blade U wipes the mirror (2).

In addition, a return spring is provided as appropriate to ensure that the shaft arm (1'7) stops swinging to either the left or right when it is not in operation, so that the wiper blade (111) does not remain stopped in a position that obstructs visibility. That's how it is.

6 and 7 show the operating section (40), which is provided, for example, on the front panel of the driver's seat.

FIG. 6 is an example in which the electric wiper drive unit (21) shown in FIGS. 1 to 4 is used, and as shown in FIG. wiper switch (
41) is operated by a tilting switch knob (42) of the mirror tilting unit (4). That is,
The knob (42) is adapted to drive the mirror tilting unit (4) by pressing its periphery, and to turn on the wiper switch (411) by pressing its center.

The wiper switch (41) is shown in Fig. 6(b) and (C).
As shown in the figure, the motor c22) or the electromagnetic solenoid (
3I), and in the case of the motor (22), an auto-stop switch (43) is connected in parallel. This auto stop switch (43) is so that even if the wiper switch (42) is turned off, the wiper operation does not stop immediately, and the wiper blade (11) stops at a position where it does not swing to the left or right and obstruct visibility. An auto-stop switch having a structure similar to that of an auto-stop switch commonly used in windshield wipers can be used as appropriate. Note that (44) is a left and right mirror changeover switch.

Figure 7 shows the manual wiper drive unit f2 shown in Figure 5.
This is an example of case 1), where the wiper operation knob (
45) and a lever (46) as shown in FIG. 7(b).
) to connect the inner wire (37) to 6. That is, if the lever (46) is rotated by operating the knob (45), the shaft arm (
17) is driven, and the wiper blade (11) performs the wiping action, and when the knob is not operated, it is stopped at the upper position by the above-mentioned return spring.

In this way, by integrating the operating section (40) of the wiper drive section 2 with the operating section of the mirror tilting unit (4) or arranging them close to each other, handling becomes easier and the entire operating section can be made more compact. It becomes possible to summarize them into .

In addition, in the embodiment shown in FIGS. 1 to 3, a motor (221) having an output shaft (241) that continuously rotates in the same direction is used, but the continuous rotation is changed to reciprocating swing within a certain angular range. If you use an oscillating motor that has a built-in motion conversion mechanism and whose output shaft rotates back and forth within a certain range,
It is possible to omit the motion conversion member such as the shaft arm (19) and directly connect the wiper shaft (13) and the motor.

As is clear from the description of the various embodiments above, the present invention makes it possible to always maintain the contact pressure between the wiper blade and the mirror at an appropriate value regardless of the orientation of the mirror.
There is an advantage that it is possible to easily obtain an outside mirror with a wiper that can exhibit a good wiping action and that operates smoothly.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of one embodiment of the present invention, Fig. 2 is a front view of the same, Fig. 3 is a plan view of the main part of the same, and Fig. 4 is a main part of another embodiment. Plan view FIG. 5 is a plan view of main parts of another embodiment. Fig. 6 and Fig. 7 show examples of the operation part, Fig. 6 (a) is a front view in the case of electric type, Fig. 6 (b) and fc) are wiring diagrams of the main parts, and Fig. 7 FIG. 7(a) is a front view of the manual type, and FIG. 7(b) is a side sectional view. (2)...Mirror, (3)...Mirror holder, (4
)... Mirror tilting unit, (5)... Stay, (
11)... Wiper blade, 131-... Wiper shaft, σ51 (16)... Support part, (17)...
・Shaft arm, (21)...wiper drive section, (
26+ (26s (26b)...drive pin, so...
engagement hole. Patent applicant: Tokai Rika Denki Seisakusho Co., Ltd.
Patent attorney Aoyama Aoyama and 2 others Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) In an outside mirror with a wiper that is equipped with a tiltable mirror and a wiper blade that wipes the surface of the mirror, a stay that projects from the mirror holder and tilts together with the mirror is provided on the back of the mirror, and a stay is provided at the tip of the mirror. A wiper shaft to which a wiper blade is attached is rotatably supported on the stay, and a wiper drive unit is attached to the stay, which is connected to the wiper shaft and gives the wiper shaft reciprocating rotation within a certain range. Outside mirror with wiper.