JPS6333725Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wiper device in which a wiper blade that wipes the outer surface of a window moves in parallel.

Conventionally, the wiper blade that wipes the outside surface of a vehicle's window is usually attached to the tip of an arm that is pivotally attached to the vehicle body, and because the wiper blade rotates in an arc around the arm's pivot point, it is particularly difficult to wipe the outer surface of the window. There was a problem that there were many parts that could not be removed.

This invention was proposed in view of the above, and
A wiper blade that wipes the outer surface of a vehicle window; a sliding member that can slide vertically while being guided by a guide member provided on the vehicle body below the window; both ends are pivotally connected to the wiper blade and the sliding member, respectively. an arm member whose one end is locked to the parallel link and whose intermediate portion is pivotally connected to the vehicle body near the guide member; A wiper device comprising a drive device that swings an arm member and is coupled to the sliding member and reciprocates the sliding member vertically along the guide member at a predetermined ratio to the swinging of the arm member. It is related to.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 4. Reference numeral 1 denotes a self-advertised wiper blade for wiping the front window 3 of the truck cab 2, and the wiper blade is pivotally attached to the upper end of a parallel link 6 consisting of a first rod 4 and a second rod 5. The parallel link 6 passes through a slit 8 formed in the front panel 7 of the cab 2, and the lower part of the parallel link 6 passes through a slit 8 formed in the front panel 7 of the cab 2.
It is arranged at the rear and is pivotally connected to a sliding member 11, which will be described later. Furthermore, two guide members 9 having a U-shaped cross section are arranged in parallel behind the front panel 7 below the front window 3, and are fixed to the cab 2 via a bracket (not shown).
A plate-shaped sliding member 1 is disposed in both grooves 10 of the guide member.
Both ends of 1 are slidably guided. The sliding member 11 is pivotally attached to the upper end of a first link 12, and the lower end of the first link is fixed to a shaft 13 pivotally attached to the cab 2 by a bracket (not shown). A first gear 14 is fixed to the shaft 13 and is configured to be rotationally driven by a motor (not shown).The first gear 14 is also connected to a shaft 15 which is pivotally connected to the cab 2 by a bracket (not shown). A second gear is fixed and has twice the number of teeth as the first gear.
Gear 16 is in mesh. On the other hand, connect the middle part with pin 1
The upper end of the arm member 18 pivotally connected to the cab 2 by 7 is formed in a T-shape, and the parallel link 6
Two pins 19 are arranged side by side so as to sandwich them, and a cylindrical rubber 20 is fitted onto the pins. Further, the upper end of a second link 21 is pivotally connected to the lower end of the arm member 18, and the lower end of the second link is connected to the shaft 1.
It is fixed at 5.

The operation of the above configuration will be explained below. First, as shown in FIG. 1, the wiper blade 1 is located at the left end of the front window 3 and the sliding member 11
is located at the upper end of the guide member 9,
When a motor (not shown) is operated to rotate the shaft 13 and first gear 14 in the direction of arrow A, the sliding member 11 slides downward via the first link 12. On the other hand, the second gear 1 meshing with the first gear 14
6 rotates in the direction of arrow B, the arm member 18 rotates clockwise around the pin 17 via the second link 21, and rotates the parallel link 6 to the right side via the rubber 20 fitted onto the left pin 19. The wiper blade 1 is moved in parallel to the right in order to be pressed and moved. FIG. 2 shows the state when the first gear 14 has rotated approximately half a turn from the state shown in FIG. Then, the sliding member 11 moves upward. On the other hand, when the second gear 16 rotates in the direction of arrow B, the arm member 18 rotates clockwise around the pin 17 via the second link 21 and is parallel to the arm member 18 via the rubber 20 externally fitted on the left pin 19. In order to push the link 6 to the right, the wiper blade 1 is moved in parallel to the right. Then, when the first gear 14 makes one rotation and the sliding member 11 reciprocates in the vertical direction once and moves to the upper end of the guide member 9, the wiper blade 1 moves to the rightmost side, and then the first gear 14 is 1 in the direction of arrow A
While the sliding member 11 rotates and makes one reciprocation in the vertical direction, the arm member 18 rotates counterclockwise around the pin 17 and connects to the parallel link 6 via the rubber 20 fitted onto the right pin 19. In order to press and move the wiper blade 1 to the left, the wiper blade 1 is moved in parallel to the left and returns to the position approximately shown in FIG.

According to the above configuration, since the wiper blade 1 moves in parallel to wipe the front window 3, it is possible to eliminate the problem of leaving many areas that cannot be wiped as in the conventional wiper blade.

[Brief explanation of drawings]

FIG. 1 is an explanatory front view showing an embodiment of the present invention, FIG. 2 is an explanatory front view showing the state when the first gear 14 in FIG.
FIG. 4 is an enlarged sectional view taken along the line of FIG. 1. 1: wiper blade, 3: front window, 6: parallel link, 9: guide member, 11: sliding member, 14: first gear, 16: second gear, 1
8: Arm member.

Claims (1)

[Scope of utility model registration request] A wiper blade that wipes the outer surface of a vehicle window; a sliding member that can slide vertically while being guided by a guide member provided on the vehicle body below the window; both ends are pivotally connected to the wiper blade and the sliding member, respectively. an arm member whose one end is locked to the parallel link and whose intermediate portion is pivotally connected to the vehicle body near the guide member; A wiper device comprising a drive device that swings an arm member and is coupled to the sliding member and reciprocates the sliding member vertically along the guide member at a predetermined ratio to the swinging of the arm member. .