JPH0530545Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a vehicle wiper device used in a vehicle having a forward-folding front window panel.

<Prior Art> A wiper device used in a vehicle having a front window panel that folds forward, such as a jeep or a military vehicle, has a hinge part for locking back on the arm head to avoid interference with the front window panel that folds forward. A hinge portion for tilting forward was separately provided, and this hinge portion was fixed and released by engaging and disengaging a screw to tilt the entire wiper arm forward (see Japanese Utility Model Publication No. 60-68851).

<Problems to be solved by the invention> However, in the case of such conventional vehicle wiper devices, in order to avoid interference with the front window panel that tilts forward, the hinge part for tilting forward is separately provided as described above. This made the entire structure of the wiper arm complicated. Further, when tilting the wiper arm forward, it was necessary to engage and disengage the screws, which was surprisingly troublesome.

This invention was made with attention to such conventional technology, and aims to provide a wiper device for a vehicle that has a simple structure and is easy to operate in order to avoid interference with a forward-folding front window panel. That is.

<Means for solving the problem> In order to achieve the above-mentioned purpose, the wiper device for a vehicle according to the present invention uses a windshield wiper device that is installed at a vehicle body part in front of a front-folding front window panel that is supported so as to be tiltable and rotatable. In addition, the pivot shaft, which has a threaded portion at its tip and is integrally provided with a swinging portion in other parts, is rotated within a certain angle range within a range that does not interfere with the forward tilting rotation locus of the lower end of the front window panel. A shape that allows the swinging part to be mounted so as to be freely rotated in reverse, and that allows the swinging part to be stored in the arm head of the wiper arm, and allowing relative movement along the longitudinal axis direction of the pivot shaft of the swinging part and rotational movement of the swinging part. A recess of the same size and an opening communicating with the recess are provided, and a recess or a protrusion is formed in the swinging part, and a recess or a protrusion is formed in the recess of the arm head in a direction along the longitudinal axis direction. The arm head is attached to the pivot shaft by forming a convex portion or a concave portion that can be freely engaged and detached, and by housing the swinging portion in the concave portion and fixing a nut to the threaded portion of the pivot shaft facing inside the opening. and between the arm head and the swinging part in the recess, an elastic member is provided that biases the arm head in a direction in which the protrusion or recess on the arm head side engages with the recess or protrusion of the swinging part. It is something that

<Operation> Since the swinging part and the arm head of the wiper arm are in uneven engagement with each other by the biasing member, they are in a state where they cannot rotate relative to each other, and the entire wiper arm is rotated forward and backward in accordance with the swinging part, and the front Window panels can be wiped.

Then, by pushing or pulling the arm head in a direction along the longitudinal axis of the pivot shaft against the biasing means, the uneven engagement between the arm head and the swinging section is released. is simple, and there is no need to provide a special hinge part.

The disengaged wiper arm is installed in such a way that the pivot shaft is installed in the vehicle body part in front of the front window panel and in a range that does not interfere with the forward tilting rotation locus of the lower end of the front window panel, and the swinging part itself is inside the recess. Since the wiper arm is rotationally movable, it can be rotated outside the normal fixed angle range, and can be stored in a location where there is no risk of interference with the front window panel that is tilted forward.

<Example> A preferred example of this invention is shown in Figs. 1 to 4 below.
This will be explained based on the diagram.

1 is a front window panel that can be folded forward.
Two wiper arms 2 are provided in front of this front window panel 1. This wiper arm 2 rotates forward and backward within a certain angle range θ.
A wiper blade 3 that directly wipes the front window panel 1, a retainer 4 with an arm piece that supports the wiper blade 3 at its tip, and an arm head 6 that lifts and rotatably supports the retainer 4 with a hinge portion 5. It is mainly composed of.

A pivot shaft 7 has a threaded portion 8 at the tip and a tapered base end, and is rotatable in forward and reverse directions within a certain angle range θ. At the base end of the pivot shaft 7, there is a swinging part 9 having a generally cylindrical shape that rotates forward and backward integrally with the pivot shaft 7.
is installed. The pivot shaft 7 is attached to a portion of the vehicle body in front of the front window panel 1 and within a range where it does not interfere with the forward tilting rotation locus of the lower end of the front window panel 1.

The arm head 6 of the wiper arm 2 has a circular cross section corresponding to the swinging part 9 to allow relative movement along the longitudinal axis direction of the pivot shaft 7 of the swinging part 9 and rotational movement of the swinging part 9. A recess 10 whose height is approximately twice that of the swinging part 9, and a recess 10 that supports the tip of the pivot shaft 7 and the arm head 6 itself.
An opening 12 for a fixing nut 11 is formed. Further, a spring 13 as a "biasing member" is disposed in the recess 10 above the swinging portion 9, and constantly biases the entire arm head 6 upward. Furthermore, cutouts 14 are provided as "recesses" at opposing positions on the lower surface of the swinging part 9, and the pivot shaft 7 is inserted into the cutouts 14 in the longitudinal axis direction of the arm head 6 on the lower surface of the arm head 6. Keys 15 as "protrusions" that can be freely engaged and detached along the direction are embedded and attached by screws 16. That is, the arm head 6 and the swinging part 9 are engaged with each other in a mutually unrotatable state by engaging the cutout part 14 and the key 15.

Therefore, the entire arm head 6 is covered by the spring 13.
Since it is always urged upward by
The key 15 of the arm head 6 is located in the notch 1 of the swinging part 9.
4 (see Fig. 2), the arm head 6 rotates forward and backward integrally with the swinging part 9, and the wiper blade 3 at the tip of the wiper arm 2 wipes the front window panel 1. Can be wiped out.

When the front window panel 1 is folded forward and the wiper arm 2 is not in use, the entire arm head 6 can be moved downward against the spring 13 by pressing the arm head 6 in the direction of arrow A along the longitudinal axis of the pivot shaft 7. Go to and press key 1
5 comes off from the notch 14, and the arm head 6 becomes disengaged with the swinging part 9 (see FIG. 3), so the entire wiper arm 2 is moved outside the fixed angle range θ and the front window panel 1 is tilted forward. Rotate and store it in a position where it does not interfere with the
be able to. In other words, the disengaged wiper arm 2 is attached to the vehicle body part in front of the front window panel 1 and in a range where the pivot shaft 7 does not interfere with the forward tilting rotation locus of the lower end of the front window panel 1, and Since the swinging part 9 itself is rotatably movable within the recess 10, the wiper arm 2 can rotate outside the normal fixed angle range θ, and this causes an interference problem with the front window panel 1 which is tilted forward. It can be stored in a safe location. Moreover,
In this stored state, key 1 of arm head 6 is
5 is pressed against the lower surface of the swinging part 9 by the spring 13, an appropriate sliding resistance is applied between the arm head 6 and the swinging part 9,
The wiper arm 6 in the stored state does not wobble. To put the wiper arm 2 back into use, simply return the wiper arm 2 to its original position.
The key 15 and the notch 1 are pushed together by the biasing force of the spring 13.
4, it will automatically engage back to its original state. Furthermore, even if a passenger accidentally operates the wiper switch when the wiper arm 2 is retracted, the pivot shaft 7
A limit switch is combined with the motor that rotates the motor, and the wiper switch is prevented from operating.

Incidentally, in the above explanation, an example was shown in which the engagement is released by moving the arm head 6 in the pressing direction, but the present invention is not limited to this, and for example, the positions of the notch 14 and the key 15 may be arranged upside down, In addition, the direction in which the spring 15 is biased may be reversed, and the arm head 6 may be pulled along the longitudinal axis of the pivot shaft 7 to release the engagement between the arm head 6 and the swinging portion 9. Furthermore, a key 15 is provided on the swinging portion 9, and the arm head 6
A notch 14 may be provided in the.

<Effects> The wiper device for a vehicle according to this invention has the content as described above, and can be disengaged from the swinging portion by moving the wiper arm in the direction along the longitudinal axis of the pivot shaft. It is easy to operate and does not require troublesome operations such as attaching and detaching screws.

In addition, in order to avoid interference with the forward-tilting front window panel, the wiper arm is rotated and retracted outside a certain angle range instead of tilting forward.
There is no need to provide a special hinge part or the like to tilt the wiper arm forward, and the structure of the wiper arm does not become complicated.

Furthermore, according to the embodiment, when the wiper arm is stored, an appropriate sliding resistance is applied between the arm head and the swinging part due to the biasing force of the spring, so that the wiper arm in the stored state does not wobble. Nor.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view of an automobile showing the first embodiment of this invention, Fig. 2 is an enlarged sectional view of the main part of the arm head showing the engaged state, and Fig. 3 corresponds to Fig. 2 showing the disengaged state. 4 is an enlarged sectional view of the 2nd
It is a bottom view seen from the arrow direction in the figure. DESCRIPTION OF SYMBOLS 1... Front window panel, 2... Wiper arm, 6... Arm head, 7... Pivot shaft, 9... Rocking part, 14... Notch (concave part), 15... Key (convex part), θ... Fixed angle range.

Claims (1)

[Scope of Claim for Utility Model Registration] A screw is provided at the tip of the vehicle body part on the front side of the forward-folding front window panel that is supported so that it can be tilted forward and rotated, and within a range that does not interfere with the forward-tilting rotation locus of the lower end of the front window panel. A pivot shaft in which a pivot shaft is formed and a swinging part is integrally provided in other parts is mounted so as to be rotatable in forward and reverse directions within a certain angle range, and said swinging part can be stored in an arm head of a wiper arm. and a recess having a shape and size that allows relative movement along the longitudinal axis direction of the pivot shaft of the swinging part and rotational movement of the swinging part, and an opening that communicates with the recess; a concave part or a convex part is formed in the arm head, and a convex part or a concave part is formed in the concave part of the arm head, and a convex part or a concave part is formed in the concave part of the arm head, and the convex part or a concave part can be freely engaged with and detached from the concave part or the convex part in the direction along the longitudinal axis direction; The arm head is attached to the pivot shaft by fixing a nut to the threaded part of the pivot shaft which is housed in the recess and faces into the opening, and the protrusion on the arm head side is installed between the arm head and the swinging part in the recess. 1. A wiper device for a vehicle, comprising an elastic member that biases the arm head in a direction in which the arm head is engaged with the recess or convex portion of the swinging portion.