JPH04201767A - Rear wiper device for vehicle - Google Patents

Abstract

PURPOSE:To provide good visibility of a stop lamp from behind a vehicle further to prevent a field of rear vision from being disturbed and also to wipe off the periphery of the stop and a stain of water by setting a stop position of a wiper blade in the vicinity above the stop lamp. CONSTITUTION:A wiper arm 5, to which a wiper blade is mounted, is turnably mounted to a rear window panel 3 with a pivot shaft 6 serving as the center to wipe off a predetermined wiping range 3a. Here, the wiping range of the wiper blade is set so that the rear window panel 3, to which a high mount stop lamp 1 is opposed, is the wiping range of the wiper blade 4. A stop position of the wiper blade 4 is set in the vicinity of an upper side in a position of arranging the high mount stop lamp 1. That is, a wiping direction of the wiper blade 4 is set such that the blade is returned to the stop position 7 from the stop position 7 successively via an upper side inverting position 9 and a lower side inverting position 25.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rear wiper device for a vehicle, and particularly to a rear wiper device for a vehicle that improves the visibility of a stop lamp provided on the inside of the vehicle.

[Prior Art] An example of a conventional vehicle rear wiper device is the one shown in FIG. 9. Reference numeral 1 in FIG. The second high-mounted stop lamp 1, which is visible from the rear of the vehicle through the rear window panel 3, is designed to reduce head clearance for people sitting in the rear seats, especially in sedans and hardtop vehicles. In order to ensure this, it cannot be placed near the ceiling in the vehicle interior, but is placed on the rear parcel shelf 2, that is, on the lower side of the rear window panel 3.

The vehicle rear wiper device includes a wiper blade 4
is connected to a drive means (not shown) inside the vehicle via the wiper arm 5. By driving this drive means, the rear window panel 3 is rotated around the pivot shaft 6.
The wiper blade 4 swings on the surface and wipes a wiping range 8.

This wiper blade 4 has a stop position 7 set near the upper side of the high mount stop lamp 1 so that the high mount stop lamp 1 is not hidden behind the wiper blade 4 and becomes invisible from the rear of the vehicle when the wiper blade 4 stops operating.

This stopping position 7 may be set vertically near the rear villa 9a as used in hatchback and wagon type vehicles, but in sedan and hard top type vehicles, the shape of the rear window panel 3 is Because it is horizontally long,
The stop position 7 is closer to the center, which obstructs rear visibility.

For this reason, as mentioned above, high mount stop lamp 1
It is set to stop near the lower reversal position 9.

In addition, as for this kind of thing, for example,
There are some such as those described in Publication No. 361 and the like.

[Problems to be Solved by the Invention] However, in such a conventional vehicle rear wiper device, when the wiper blade 4 wipes the wiping range 8, the wiper blade 4 wipes the lower side from the upper inverted position 9. Water and dirt on the rear window panel 3 that has been carried to the reversal position 7 flows down to the position where the high mount stop lamp 1 is arranged. Therefore, there is a fear that this may impair the visibility of the high-mounted stop lamp 1 from the rear of the vehicle.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a rear wiper device for a vehicle that can ensure rearward visibility when the rear wiper device is stopped and also ensure good visibility of a high-mounted stop lamp from the rear of the vehicle. purpose.

[Means for Solving Problem 11] The present invention has been made by focusing on such problems, and is directed to a rear wiper device for a vehicle having a wiper arm and a wiper blade. In a rear wiper device for a vehicle that wipes a rear window panel of a vehicle in which a stop lamp that is visible through the rear window panel is disposed on the inside of the vehicle, the area where the wiper blade wipes the rear window panel facing the stop lamp is provided. Set the wiper blade wiping range so that It is characterized by being set to return to the stop position through successive positions.

Further, in the vehicle rear wiper device according to claim (2),
The wiper blade according to claim 1 is connected to the wiper arm so as to be rotatable about an axis substantially perpendicular to the wiping surface, and the wiper blade comes into contact with the wiper blade near the lower inverted position to rotate the wiper blade. A stopper is provided that is approximately parallel to the lower side of the rear window panel, and a stopper is provided at the portion where the wiper blade and the wiper arm are connected, so that the wiper blade and the wiper arm are kept at a constant angle during the wiping operation, and the wiper blade is brought into contact with the stopper. In some cases, the wiper blade is characterized by being provided with an elastic member having a biasing force that causes the wiper blade to rotate relative to the wiper arm.

[Function] According to the means described in claim 1, since the wiper blade stopping position is set near the upper side of the stop lamp, rearward visibility is secured and the stop lamp is hidden by the wiper blade when the wiper blade is stopped. Not at all.

By wiping the wiper blade from the upper inverted position to the lower inverted position, the stop lamp position is also wiped downward, ensuring good visibility from behind the stop lamp. .

According to the means described in claim 2, in addition to the above-mentioned effect, when the wiper blade comes into contact with the stopper near the lower reverse position, the wiper blade rotates with respect to the wiper arm, and the lower side of the rear window panel Wipe the top of the rear window panel until it is approximately parallel to the

[Example code] Hereinafter, the present invention will be explained based on examples.

1 to 8 are diagrams showing one embodiment of the present invention. The same parts as those of the conventional vehicle rear wiper device are given the same reference numerals, and the explanation thereof will be omitted.

First, to explain the configuration, in this rear wiper device for a vehicle, a wiper arm 5 to which a wiper blade 4 is attached moves around a pivot shaft 6, and a rear window panel 3
It is rotatably attached to the window panel 3 and wipes the area within the wiping range 3a of the window panel 3.

As shown in FIG. 6, this wiper arm 5 includes a link member 10. 11. It is connected to a rotating shaft 13 of a drive means (not shown) via a shaft 12. The rotary shaft 13 is further provided with a first contact plate 15a1 and a second contact plate 15a1 as a constant stop position control means 14.
#Connects the auto-stop contact plate 15 on which the dot plate 15b is arranged. This stop position control means 14 has contacts 16a, 16b, 16c as shown in FIG.
It is electrically connected to the wiper motor M1 electric II 17 and the switch 18 via. Then, when the switch 18 is switched to the OFF state, when the contact X16a and the contact 18b are connected on the second contact plate 15b, the dynamic braking circuit 28 shown by the dotted line in the figure is opened and the circuit is short-circuited. Ru.

This applies an electric brake to the wiper motor M,
It is configured to stop at position A shown in FIG. Note that the reference numeral 19 in FIG. 7 is a washer motor.

Next, the structure around the wiper arm 5 will be explained using FIGS. 2 to 5. A holder 20 is rotatably attached to the tip end 5a of the wiper arm 5 with a rivet 21. The holder 20 has a U-shaped cross section, and a primary lever 4a of the wiper blade 4 is rotatably attached to its tip 20a by a rivet 22. Approximately central portion 20 of this holder 20
A spring member 23 is attached to b from the outside with a rivet 24. This spring member 23 is connected to the connecting portion 23
Connect the left and right springs 23b and '3b by a,
Its shape is U-shaped, and an L-shaped locking portion 23c is provided at the tip. This locking portion 23c is locked to the wiper arm 5 as shown in FIG.
By regulating the free rotation of by its biasing force,
Here, the relationship between the wiper arm 5 and the wiper blade 4 is kept substantially linear. It goes without saying that the angle may be maintained at any angle depending on the purpose. Then, when a force exceeding a certain value is applied to the wiper blade 4, the tip 23b expands outward against the biasing force as shown by the two-dot chain line in FIG. It is set to rotate as follows.

Further, on the rear window panel 3 of the device of this embodiment, stoppers 26 and 27, with which the wiper blade 4 comes into contact, are provided in the vicinity of the lower inverted position 25 of the wiper blade 4. This stopper 26. The horizontal arrangement position of the wiper blade 27 is set so that the wiper blade 4 comes into contact with the wiper blade 4 and rotates to become substantially parallel to the lower side of the rear window panel 3.

The wiping range of the wiper blade 4 is set so that the rear window panel 3 facing the high mount stop lamp 1 is within the wiping range of the wiper blade 4.

Further, the stop position 7 of the wiper blade 4 is set near the upper side of the position where the high mount stop lamp 1 is disposed.

In the vehicle rear wiper device of the present invention configured as described above, the wiping direction of the wiper blade 4 is such that the wiper blade 4 returns to the stop position 7 from the stop position 7 through the upper reversal position 9 and the lower reversal position 25 in sequence. is set to .

Now, turn on the switch 18 of this rear wiper device as shown in Figure 7.
When switched to the state, the motor 16 is driven and the rotating shaft 13
, link member 12. 11. The wiper arm 5 swings via 10. First, when the link member 12 starts rotating clockwise about the rotating shaft 13 from the stop position A as shown by the solid line in FIG. 6, the wiper arm 5 moves from the A position to the B position. Along with this, the wiper blade 4 also moves from the stop position 7 shown in FIG. 1 to the upper reversal position 9, and wipes the surface of the rear window panel 3. At this time, the wiper blade 4 maintains a substantially linear relationship with the wiper arm 5.

When the link member 12 rotates and passes the B position, the wiper arm 5 is reversed at the upper reversal position 9 and moves to the lower reversal position 25 via the stop position 7.

When the link member 12 rotates further and approaches the C position, the 81st! As shown in IX (A), when the tip 4a of the wiper blade 4 first comes into contact with the stopper 26, a force is applied to the tip 4a of the wiper blade 4 in the direction of pushing it upward. Therefore, the spring portion 23b deforms against the urging force as shown by the two-dot chain line in FIG. 4, and the wiper blade 4 rotates around the rivet 21, as shown in FIG. 8(B).
As shown in FIG. 2, the other end 5b comes into contact with the stopper 27 without any force. Therefore, the wiper blade 4 reaches the lower inverted position 25 on the rear window panel 3 and becomes substantially parallel to the lower side of the rear window panel 3. Therefore, stop position 7
The three surfaces of the rear window panel between and the lower inverted position 25 are also completely wiped away.

Further, when the rotation of the link member 12 passes through the C position,
The wiper arm 5 is also reversed at the lower reversal position 25, and the wiper blade 4 is also reversed at the other end 4 as shown in FIG. 8(C).
b, stopper 27.b in the order of one end 4a. Leave from 26. Due to this separation, no force is applied to the wiper blade 4, so that the wiper blade 4 and the wiper arm 5 return to their original substantially linear positional relationship due to the elastic force of the spring member 23.

In this manner, the swinging motion of the wiper blade 4 is repeated in accordance with the rotation of the link member 12.

In synchronization with the rotation of the link member 12, the auto-stop contact plate 15 is also rotating. When the switch 18 is turned off at any position, the contacts 16b and 16c are connected via the first contact plate 15a until the second contact plate 15b reaches the A position shown in FIG. , since current is flowing through the motor M, the wiper blade 4 continues its swinging motion.

When the second contact plate 15b reaches the A position, the dynamic braking circuit 28 shown by the dotted line in FIG. 7 is opened.

Therefore, an electric brake is applied to the wiper motor 16 to stop it. That is, since the link member 15 also stops at the A position in synchronization with the auto-stop contact plate 15, the wiper blade 4 connected thereto also stops at the stop position 7. Since this stop position 7 is set near the upper side of the high mount stop lamp 1, good visibility of the high mount stop lamp 1 from the rear of the vehicle can be ensured even when the wiper arm 5 is stopped.

[Effect of the invention] As explained above, according to the invention of claim 1,
Since the stop position of the wiper blade is set near the upper part of the stop lamp, the stop lamp can be clearly seen from the rear of the vehicle when the rear wiper device is stopped, and does not obstruct the rear view.

When the wiper blade is in operation, water and dirt around the stop lamp location on the rear window panel can also be wiped away. Therefore, it is possible to ensure good visibility from the rear of the stop lamp when the wiper blade is in operation, which is a practically beneficial effect.

According to the invention as claimed in claim 2, in addition to the above-mentioned effects, the wiper blade rotates relative to the wiper arm near the lower inverted position, and the wiper blade rotates until the wiper blade becomes substantially parallel to the lower side of the rear window panel. Wipe off the top. Therefore, it is possible to reliably wipe the area near the lower side of the rear window panel that could not be wiped conventionally, and a stop lamp can also be disposed in this area, which is a practically useful effect.

[Brief explanation of the drawing]

1 to 8 show embodiments of this invention,
Fig. 1 is a schematic diagram of a rear wiper device for a vehicle according to the present invention, Fig. 2 is a partially enlarged view of the vicinity of the wiper arm, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is a diagram of the spring member. Explanatory diagram,
FIG. 5 is a sectional view taken along line V-V in FIG. 2, FIG. 6 is an explanatory diagram showing the operation of the link member and fixed position control means, FIG. 7 is an explanatory diagram of the circuit, and FIG. 8 is a diagram of the wiper arm. FIG. 9, an explanatory diagram showing the operation near the lower reversal position, is a schematic diagram of a conventional vehicle rear wiper device. 1... High mount stop lamp (stop lamp) 3... Rear window panel 3a... Wiping range 4... Wiper blade 5... Wiper arm 7... Stop position 9... Upper reversal position 25 ...lower inversion position

Claims (2)

[Claims] (1) A rear wiper device for a vehicle that wipes a rear window panel of a vehicle, which has a wiper arm and a wiper blade, and in which a stop lamp that is visible from the rear of the vehicle through the rear window panel is disposed inside the vehicle interior. The wiper blade wiping range is set so that the rear window panel facing the stop lamp is within the wiping range of the wiper blade, the stopping position of the wiper blade is set near the upper side of the stop lamp, and the wiper blade is A rear wiper device for a vehicle, characterized in that the wiping direction is set to return from the stop position to the stop position via an upper inversion position, a lower inversion position in sequence. (2) The wiper blade according to claim 1 is connected to the wiper arm so as to be rotatable about an axis substantially perpendicular to the wiping surface, and the wiper blade contacts and rotates the wiper blade near the lower inverted position. A stopper is provided at the portion where the wiper blade and the wiper arm are connected to each other so that the wiper blade and the wiper arm are kept at a constant angle during the wiping operation. 1. A rear wiper device for a vehicle, comprising an elastic member having a biasing force that causes the wiper blade to rotate relative to the wiper arm when the wiper blade comes into contact with the wiper arm.