JPH048651A - Wiper arm - Google Patents

Abstract

PURPOSE:To prevent damage to a wiper and others by constituting a wiper arm so that the locking state of a retainer is released when an engine hood collides with the retainer made in the state to float above a window panel surface by a locking member. CONSTITUTION:When a retainer 14 is lifted upward, a side part 29 and a rear edge part 40 of the retainer 14 turns and the locking state with a rear edge part 32 of a stopper pin 26 is released, and accordingly, the rear edge part 32 is pushed out to the side of a roller 30 by a spring 37 and locked by the roller 30, and a contact plate 19 is separated from a side part 18 of the retainer 14 together with a top edge part 24 of a lever 21. In such a state, a rear edge part of an engine hood 9 comes in contact with the contact plate 19, and when the contact plate 19 is turned to the side of the side part 18, a rear edge part 25 of the lever 21 is turned upward and the stopper pin 26 is moved upward, and the locking state of the stopper pin 26 and the roller 30 is released, and consequently, the retainer 14 receives a tensile force of a spring 17 and turns to the original wiper working state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wiper arm of a wiper device installed in an automobile, a ship, etc., and particularly relates to a wiper arm equipped with a means for preventing damage when an engine hood interferes with the wiper arm.

[Prior Art] Conventionally, as this type of device, for example,
There is something like the one shown in Figure 0.

Reference numeral 1 in FIG. 8 is a pivot shaft for swinging the wiper arm 10, and the arm head 2 of the wiper arm 10 is attached to this pivot shaft 1.

The wiper arm 10 has a retainer 4 rotatably connected to the arm head 2 via a rotating shaft 3, and a wiper blade 7 is attached to the tip of the retainer 4, as shown in FIG. .

As shown in FIG. 8, a spring 6 is mounted between the retainer 4 and the arm head 2 at a position lower than the rotating shaft 3 in the figure. The tensile force of the spring 6 causes the wiper blade 7 attached to the retainer 6 to be pressed against the window panel 8.

Then, as shown in FIGS. 9 and 10, the retainer 4
The retainer 4 is rotated upward around the rotating shaft 3 against the tensile force of the spring 6, and the tensile direction of the spring 6 is moved above the rotating shaft 3 to create a so-called lock pack state.
is held stationary at a predetermined angle with respect to the arm head 2, thereby making it possible to lift the wiper blade 7 from the surface of the window panel 8.

In addition, as for this kind of thing, for example, Japanese Patent Application Laid-Open No. 57-13
There is one such as that described in the 8450 publication.

[Problem to be solved by the invention] However, in such a conventional method, the ninth problem
As shown in the figure and FIG. 10, rotate the retainer 4,
When the engine hood 9 is opened with the wiper blade 7 floating above the window panel 8 surface, the rear end of the engine hood 9 may interfere with the side surface of the retainer 4.

This retainer 4 and arm head 2 will be bent in an unreasonable direction with respect to the pivot shaft 1, and there is a possibility that the engine hood 9 and wiper arm 10 will be damaged.

Therefore, it is an object of the present invention to prevent damage to the wiper arm and the engine hood when the engine hood interferes with the wiper arm.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned conventional problems, and includes an arm head and a retainer that are rotatably connected, and a spring installed between the arm head and the retainer. In the wiper arm, which generates a predetermined pressing force toward the window panel on the wiper blade attached to the retainer by the tensile force of the spring, the retainer has a distal end separated from a side of the retainer. A lever is rotatably attached so as to be movable in the contacting direction, and the retainer is attached to one of the retainer side connecting portion and the arm head side connecting portion of the connecting portion between the arm head and the retainer. When the spring is rotated by a predetermined angle in the direction opposite to the direction in which the spring is pulled, and the window panel is lifted up from the surface of the window panel, it is engaged with the other connecting part to be in the locked state, and the tip end of the lever is turned when opened. The wiper arm is characterized in that the wiper arm is provided with an engaging member that releases the locked state when the wiper arm is pressed by the engine hood and rotated in a direction approaching the side portion of the retainer.

[Function] According to this means, when the retainer is rotated against the tensile force of the spring and raised from the window panel surface, the retainer side connecting portion or the arm head side connecting portion is engaged by the locking member. is stopped and locked in this state.

When the engine hood is opened in this state, the rear end of the engine hood comes into contact with the tip end of the lever, and the lever is rotated so as to approach the side of the retainer. Then, in conjunction with this lever rotation, the locking state by the locking member is released, and the retainer is returned to the wiper use state (the state in which the wiper blade is in contact with the wiping surface) by the tensile force of the spring. No excessive force is applied to the wiper arm, and damage to the wiper arm, etc. is prevented.

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

1 to 7 are diagrams showing one embodiment of the present invention. Note that the same members as those shown in FIG. 10 will be described with the same reference numerals.

First, to explain the configuration, reference numeral 11 in FIG.
is fixed.

The wiper arm 20 is rotatably connected to the arm head 12 and the arm head 12 via a rotating shaft 13, and has a retainer 14, into which one end of an arm piece 15 is inserted. Retained.

A spring 17 is mounted within the retainer 14, with one end supported by the arm piece 15 and the other end engaged with the engagement pin 16 of the arm head 12.

The retaining pin 16 is provided at a predetermined distance downward from the rotating shaft 13, and is set so that the retainer 14 receives a rotational force downward in FIG.

Further, on one side 18 of the retainer 14, a tip 24 is provided.
A lever 21 having a contact plate 19 is rotatably attached to the lever 21 . Specifically, as shown in FIGS. 1 and 2, the lever 21 has a dogleg shape, and is rotated with a bottle 23 on a flange 22 that protrudes from the side 18 of the retainer 14 at the bent portion. The contact plate 19 is attached to the side part 1 so as to be movable.
8, it is movable in the direction toward and away from this side portion 18.

As shown in FIGS. 1 and 2, the rear end portion 25 of the lever 21 is provided with a stopper pin 26 as a locking member.
The rear end portions 31 of the two are connected to each other.

Specifically, this stopper bin 26 is connected to the wiper arm 20.
The lower surface of the arm head 12 is connected to the rear end portion 25 of the lever 21 via a sliding pin 28 that is slidably inserted into an elongated hole 27 facing in the length direction, and is connected to the rear end portion 25 of the lever 21. is attached to. And stopper bin 26
A pair of bins 33 facing upward in FIG.
．． 34 are fixed, and these bottles 33 and 34 are slidably inserted into elongated holes 35 and 36 (indicated by broken lines in FIG. 5) formed on the lower surface of the arm head 12.

The stopper bin 26 is now slid in the width direction of the wiper arm 20 (towards the center in FIG. 5). A spring 37 is installed in the elongated hole 35 to urge the bottle 33 downward in FIG.

Further, as shown in FIG. 2, a rear end portion 3 of the stopper bin 26 is provided on the rear end side of the other side portion 29 of the retainer 14.
A roller 30 is attached to which 2 is engaged.

Next, the operation of the wiper arm 20 having such a configuration will be explained.

When the wiper arm 20 is operated, the contact plate 19 of the lever 21 is brought into contact with the side part 18 of the retainer 14, and the stopper pin 26 is moved against the spring 37 in the elongated hole 35, as shown in FIGS. Lifted upward in Figure 2,
The rear end 32 of the stopper bin 26 is connected to the side 2 of the retainer 14.
9 , and the stopper bin 26 is housed on the inner surface of the rear end 40 . Therefore, the retainer 14 receives only the tensile force of the spring 17 and the rotating shaft 1
3 receives a downward rotational force in Figure 1,
The wiper blade 7 receives the pressing force against the surface of the window panel 8, and the wiping operation of the window panel 8 is performed satisfactorily.

Next, the operation of the wiper arm 20 is stopped, and the retainer 1
4, as shown in FIG. 4, and lift the wiper blade 7 upward from the window panel 8 surface.
As shown in FIG. 5, the rear end portion 40 of the side portion 29 of the retainer 14 rotates and the locking state with the rear end portion 32 of the stopper bin 26 is released. The end portion 32 is pushed out toward the roller 30 side,
It will be locked to this roller 30. Therefore, the fourth
As shown in FIGS. 7 to 7, the retainer 14 is locked at a predetermined angle by the locking force between the roller 30 and the stopper bin 26 against the urging force of the spring 17.

In parallel with this operation, the lever 21 is moved away from the retainer 14. That is, by moving the stopper bin 26 toward the roller 30 side, the sliding bin 28 of the rear end 25 of the lever 21 is slid toward the tip within the elongated hole 27, and the rear end 25 is moved around the bin 23 into a second position. Since it is rotated downward in FIG. 5, the contact plate 19 is separated from the side part 18 of the retainer 14 together with the tip end 24 of the lever 21.

In this state, when the engine hood 9 is opened, the rear end of the engine hood 9 hits the contact plate 19 from the lower eight directions in FIG. 5, and the contact plate 18 is rotated toward the side 18 of the retainer 14. With this rotation, the rear end portion 25 of the lever 21 is rotated upward in the figure. As a result, the stopper bin 26 is moved upward in FIG. 5 against the urging force of the spring 37, and the stopper bin 26 is moved upward in FIG.
The locked state of the retainer 14 with the roller 30 is released. By releasing this locked state, the retainer 14 receives the tensile force of the spring 17 and rotates downward in FIG.
As shown in the figure, the original wiper operating state is restored.

In this way, the engine hood 9 is connected to the wiper blade 20.
Since the wiper arm 20 automatically returns to the original wiper arm operating position upon contact with the wiper arm 2o, no excessive force is applied and damage to the wiper arm 2o due to interference with the engine hood 9 hardly occurs.

Further, according to this embodiment, simply by lifting the retainer 14, the stopper bin 26 and the rollers 30 of the retainer 14 are engaged with each other, so that the retainer 14 can be automatically floated at a desired angle.

In this embodiment, the lever 21 is attached so as to be close to and away from the side part 18 of the retainer 14, but the invention is not limited thereto. lever 2 so as to move toward and away from
1 can of course be attached. Also,
The lever 21 and the stopper bin 26 may be integrated, or the stopper bin 26 may be disposed on the retainer 14 side.
It goes without saying that the same effects as in this embodiment can be achieved.

[Effects of the Invention] As explained above, according to the present invention, when the engine hood collides with the retainer that is suspended from the window panel surface by the stop member, this force is received by the lever, and the lever Since the locking member is linked to the movement of the retainer approaching the side of the retainer, and the retainer is released from the locked state, damage to the wiper, etc. caused by interference of external force to the retainer in the locked state is prevented. It has the practical effect of

[Brief explanation of drawings]

1 to 7 are views showing one embodiment of the wiper arm of the present invention, FIG. 1 is a cross-sectional side view showing a part of the wiper arm broken away, and FIG. 2 is a view of the wiper arm shown in FIG. Back view seen from ! Fig. 13 is a side view corresponding to Fig. 1, Fig. 4 is a partially broken cross-sectional side view showing the beam retainer lockback state, and Fig. 5 is a back view of the state shown in Fig. 4 seen from below. ! Figure #6 is a side view corresponding to Figure 4, and Figure 7 is a side view showing the side opposite to Figure 6. Figures 8 to 10 are diagrams showing a conventional wiper arm, with Figure 8 being a partially broken cross-sectional side view of the same wiper arm, and Figure 9 being a partially broken cross-section showing the lockback state of the retainer. The side view and FIG. 10 are perspective views showing how the wiper arm is attached to the vehicle body. 9... Engine hood 12... Arm head 14... Retainer 17... Spring 18... Side part 20... Wiper arm 21... Lever 24... Tip part 26... Stopper bin ( Locking member) 7...Wiper blade 8...Window panel 2nd figure

Claims (1)

[Claims] An arm head and a retainer are rotatably connected, and a spring is installed between the arm head and the retainer, and the tension force of the spring causes a window to be attached to the wiper blade attached to the retainer. In the wiper arm that generates a predetermined pressing force toward the panel side, a lever is rotatably attached to the retainer so that the tip end side moves toward and away from the side of the retainer, and the arm head and The retainer is rotated by a predetermined angle in a direction opposite to the spring tension direction with respect to the arm head, and is lifted up from the window panel surface at one of the retainer side connection part and the arm head side connection part of the connection part with the retainer. When the lever is in a loose state, it is engaged with the other connecting part to create a locked state, and the tip end of the lever is pressed by the engine hood when opened and rotates in the direction of approaching the side of the retainer. A wiper arm comprising a locking member that releases the locked state when the wiper arm is turned.