JPH086643Y2 - Wiper arm structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a wiper arm structure in which a lift-up angle at a bending portion can be adjusted steplessly.

[Prior Art] As a wiper arm that can be stored under the hood,
First fixed to a pivot shaft rotated by a driving means
Some have an arm member and a second arm member that is foldably connected to the first arm member via a pivot shaft and is biased in the window surface direction by a biasing means.

In such a wiper arm structure, conventionally, a stopper member slidably attached to one of the first and second arm members is slidably attached to the other arm member side, and The lift-up angle of the second arm member at the bent portion around the pivot axis with respect to the first arm member is kept constant.

[Problems to be Solved by the Invention] However, the second arm member in the lift-up state may interfere with the bonnet due to subtle variations in the clearance between the bonnet and the window surface and variations in the wiper arm parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wiper arm structure capable of continuously adjusting a lift-up angle by a stopper member and preventing interference with a hood in a lift-up state.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a first arm member fixed to a pivot shaft that is rotated by a driving means, and a pivot shaft attached to the first arm member. A second arm member that is foldably connected to the first arm member and is biased in the window surface direction by a biasing means, and is attached to one of the first arm member and the second arm member, In a wiper arm structure having a stopper member that is slidable in a direction substantially parallel to the mounting axis and is in contact with the other arm member, the stopper member has a tapered stopper surface inclined with respect to the sliding direction. It was formed so that the distance between the stopper surface and the pivot shaft could be continuously changed.

Specifically, it is a wiper arm that can be stored under the hood.

[Operation] The distance between the stopper surface of the stopper member slidably attached to one arm member side of the wiper arm and the abuttable portion on the other arm member side is along the sliding direction of the stopper member. Since it is formed on an inclined surface that continuously changes, the lift-up angle of the second arm member can be maintained steplessly by adjusting the position of this stopper inclined surface with the abuttable portion on the other arm member side. Can be adjusted to

Therefore, particularly in the wiper arm that can be stored under the bonnet, it is possible to prevent interference with the bonnet in the lifted state.

[Example] An example will be described below with reference to the accompanying drawings.

First, the present invention is a wiper device for wiping a front window 1 of a vehicle shown in FIG. 1, and is suitable for a wiper arm 3 that can be stored under a hood 2.

The wiper arm 3 having a wiper blade 4 at the tip as shown in the drawing has a support portion 6 which is a first arm member fixed to a pivot shaft 5 as shown in FIG. Second foldable connection
And a shank portion 8 forming an arm member.
Although not shown, the pivot shaft 5 is rotated by a drive means of a wiper motor, and the shank portion 8 is biased in the direction of the window 1 by a biasing means of a spring.

The inner surface of the support portion 6 near the pivot shaft 7 has a third
As shown in the figure, a stopper member 11 is slidably attached.

The stopper member 11 has a plate portion 12 as shown in FIG.
A long hole 13 parallel to the pivot shaft 7 is formed in the plate, and one end of the plate 12 is bent to form a knob 16. Further, the plate portion 12 is formed with a stopper surface 14 having a tapered shape inclined with respect to the length direction of the long hole 13,
A recess 15 is formed between the tapered stopper surface 14 and the knob 16.

The stopper member 11 elastically contacts the plate spring 17 on the surface of the plate portion 12 as shown in FIG.
The pin 18 fixed to the central portion of the support is passed through the elongated hole 13 and fixed to the inner surface of the support portion 6 near the pivot shaft 7 by screwing or the like.

With the stopper member 11 attached, when the wiper arm 3 is not required to be bent, a lift-up contact formed on one side piece of the base portion of the shank portion 8 on the pivot shaft 7 side is formed inside the recess 15 of the plate portion 12. The possible part 9 faces.

And when bending the wiper arm 3, the knob
16 causes the stopper member 11 to slide along the elongated hole 13 in a direction parallel to the pivot shaft 7, and the stopper surface 14 to contact the abutable portion 9 of the shank portion 8 on the pivot shaft 7 side base. By this abutment, the shank portion 8 is lifted up around the pivot shaft 7, and the lifted state is maintained.

In the above, the stopper surface 14 is a tapered surface,
That is, since the distance between the shank portion 8 and the abuttable portion 9 is the stopper surface 14 which is an inclined surface that continuously changes along the sliding direction of the stopper member 11,
By adjusting the position of 11, it is possible to adjust and hold the lift-up angle of the shank portion 8 steplessly.

Therefore, even if there are variations in the clearance between the hood 2 and the surface of the window 1 and the parts of the wiper arm 3, it is possible to prevent the shank portion 8 from interfering with the hood 2 in the lifted state.

The stopper member 11 may be provided on the shank portion 8 side so that the stopper surface 14 thereof can come into contact with the support portion 6 side.

[Effect of the Invention] As described above, according to the wiper arm structure of the present invention,
Since the stopper member forms a tapered stopper surface inclined with respect to the sliding direction, and the distance between the stopper surface and the pivot shaft is continuously changed,
The amount of lift of the wiper arm can be set steplessly according to the amount of pulling out the stopper member, and it is used for applications such as fine adjustment of the pressure contact force of the wiper blade (small lift) to car wash and replacement of the wiper blade (large lift). Therefore, the lift amount can be easily changed. Therefore, it is possible to prevent the wiper arm that can be stowed below the bonnet from interfering with the bonnet in the lifted state.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a front window portion of a vehicle,
2 is an enlarged perspective view of the wiper arm portion, FIG. 3 is an enlarged perspective view of the bent portion of the wiper arm according to the present invention seen from the inside, and FIG. 4 is a plan view of a single stopper member. In the drawings, 1 is a window, 2 is a hood, 3 is a wiper arm, 5 is a pivot shaft, 6 is a first arm member,
7 is a pivot shaft, 8 is a second arm member, 9 is an abuttable portion, 11
Is a stopper member, and 14 is a stopper surface.

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. A first arm member fixed to a pivot shaft rotated by a drive means, a first arm member foldably connected to the first arm member via a pivot shaft, and a biasing means in a window surface direction. Attached to the arm member side of either the first arm member or the second arm member, which is biased to the second arm member, and is slidable in a direction substantially parallel to the pivot axis and the other A wiper arm structure having a stopper member that abuts the arm member of
The wiper arm structure is characterized in that the stopper member forms a tapered stopper surface that is inclined with respect to the sliding direction, and the distance between the stopper surface and the pivot shaft is continuously changed. . 2. The wiper arm structure according to claim 1, wherein the wiper arm can be stored under the hood.