JPH0130282Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a wiper arm mechanism installed in a vehicle having a foldable window glass.

[Background Art] A wiper is a device that automatically wipes off rainwater, snow, mud, dust, and other impurities adhering to the windshield surface of a vehicle to ensure the driver's visibility. This wiper is comprised of a wiper blade that directly contacts the glass surface, a drive motor, and a wiper arm and wiper link that connect the two to transmit power.

A wiper arm generally includes an arm head connected to a shaft, an arm piece to which a wiper blade is attached at the tip, and a retainer connecting the arm head and arm piece.

On the other hand, if a conventional wiper arm is used in a vehicle with a foldable windshield, when the windshield is folded forward, the wiper arm may be damaged due to excessive load being applied to the wiper arm due to the weight of the windshield.
Additionally, if the wiper arm exceeds its limit and collides with the front body of the vehicle, there is a possibility of damaging the body surface.

For this reason, in conventional vehicles, if it was desired to completely fold down the window glass, it was necessary to remove the wiper arm.

[Purpose of the invention] The present invention was developed in view of the above circumstances, and its purpose is to provide a way to prevent the wiper from collapsing between the windshield and the hood without causing any trouble even if the windshield is folded down with the wiper installed. An object of the present invention is to provide a wiper arm mechanism that can be accommodated in a wiper arm mechanism.

[Structure of the invention] In order to achieve the above object, the present invention connects two arm heads between the retainer and the wiper shaft so that the wiper arm can rotate in two stages, and also provides a fixing member between both arm heads to prevent the wiper from turning. The wiper arm is detachably provided so that when the fixing member is removed when folding down the window glass, the wiper arm pivots and is housed between the window glass and the hood.

[Embodiment of the invention] FIG. 1 is a front view showing a foldable window type vehicle. A pair of hinges 12 are provided on both sides of the lower end of the window glass 10, so that the window glass 10 can be folded toward the front body 14 side, that is, toward the front of the vehicle.

The wiper shaft 16 projects obliquely upward from the front body 14 as shown in FIG. 4, and a first arm head 18 is integrally attached to the wiper shaft 16 by a nut 20. Although not shown, the other end of the wiper shaft 16 is connected to a drive motor via a wiper link, and rotates by a predetermined angle.

A second arm head 24 is connected to the end of the first arm head 18 by a support shaft 22 as shown in FIG.
are pivotably connected. Further, as can be seen from FIG. 3, the first arm head 18 and the second arm head 24 are fixed with bolts 26. Therefore, in the state shown in FIG. 3, both arm heads 18, 24 are integral, and by removing the bolt 26, the second arm head 24 can pivot relative to the first arm head 18. The hole 24A of the second arm head 24 is counterbored so that the head of the bolt 26 does not protrude to the outside, and can be rotated from the outside with a screwdriver, wrench, etc. Furthermore, the position of the spindle 22 is determined by the position of the windshield 10 that is attached to the wiper arm.
It is desirable to install it so that its own weight is as small as possible.

A retainer 30 is rotatably connected to the other end of the second arm head 24 by a support shaft 28.
Further, an arm piece 32 is fixed to the tip of the retainer 30 as shown in FIG.
A wiper blade 36 is attached to the tip of the blade 2 via a bracket 34.

The retainer 30 has a substantially U-shaped cross section and tapers toward the tip, and has a tension coil spring 38 inside.
is accepted. One end of the tension coil spring 38 is locked to the arm piece 32, and the other end is locked to the hook 37.
It is locked to the pin 40 of the second arm head 24 via. Therefore, the retainer 30
A turning force is applied in the direction of the wiper blade (counterclockwise in FIG. 3) about the fulcrum, and this turning force becomes a holding force for the wiper blade 36. Further, the retainer 30 can be locked back to the position shown by the imaginary line against the tension coil spring 38.

The usage status of the wiper arm of this embodiment configured as described above is as follows. During normal use, such as when the vehicle is running or stopped, the bolt 26 fixes the two arm heads 18 and 24, so the second
The arm head 24 is prevented from pivoting. However, as shown in FIG. 4, the retainer 30 can rotate counterclockwise about the support shaft 28 with respect to the second arm head 24, so when cleaning the window glass 10, it cannot be rotated as shown by the imaginary line. I can do it. This lockback is performed manually against the tension of the tension coil spring 38.

Next, when the windshield 10 is to be folded down, the bolt 26 (see FIG. 3) is removed, and the wiper arm can pivot toward the front of the vehicle around the support shaft 22, as shown in FIG. 5. Therefore, the window glass 10
When folded down, the wiper arm turns almost integrally with the windshield 10. Since the retainer 30 is urged toward the windshield 10 by the tension coil spring 38, the support shaft 28 is moved from the position shown in FIG.
It will not turn counterclockwise around the center.

Although not shown, the arm heads 18 and 24 are arranged so that the rotation of the second arm head 24 is stopped at the position shown in FIG.
It is desirable to make a connection with the body and provide a stopper portion inside. With this configuration, the wiper arm is housed between the windshield 10 and the front body 14.

In the above embodiment, both arm heads 18, 24
The bolt 26 is used as a fixing member,
It is also possible to use other means, such as a structure in which a pin can be locked.

[Effects of the invention] As described above, in the present invention, two arm heads are connected between the retainer and the wiper shaft so that the wiper arm can rotate in two stages, and
Since a fixing member that prevents each arm from rotating is removably provided between both arm heads, the windshield can be completely folded down with the wiper installed, and the wiper is housed between the windshield and the front body. is obtained.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a foldable window type vehicle, Fig. 2 is an enlarged view of the wiper arm, Fig. 3 is a longitudinal sectional view thereof, and Figs. 4 and 5 are side views showing the wiper arm in use. It is. 10... Windshield, 14... Front body, 16... Wiper shaft, 18... First arm head, 22, 28... Support shaft, 24... Second
Arm head, 26...bolt, 30...retainer.

Claims (1)

[Scope of utility model registration request] In a wiper arm mechanism installed in a vehicle with a retractable windshield, two arm heads are connected between the retainer and the wiper shaft to allow the wiper arm to rotate in two stages, and a fixation is provided between the two arm heads to prevent each other from rotating. A wiper arm mechanism characterized by detachably attached parts.