JPH0431882Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a wiper device for an automobile.

(Prior Art) Generally, a wiper device for an automobile is configured such that a link system connected to the wiper is driven directly by a wiper motor or via a gear mechanism.

When the link system is directly driven by the wiper motor, the wiper motor is arranged with its motor shaft oriented in a substantially horizontal direction, and when the link system is driven through a gear mechanism, the wiper motor is arranged with its motor shaft oriented in a substantially horizontal direction. The gear shaft of the final gear is arranged to be oriented substantially horizontally, similar to the direction of the motor shaft.

Conventionally, for example, in Publication of Utility Model Publication No. 59-14296,
A duct chamber (cowl box) is formed by the front panel, duct panel, and front bulkhead, and the wiper motor is oriented in a substantially vertical duct with its motor axis directed slightly below the horizontal direction to form part of the cowl box. An automobile wiper that is mounted on a panel and driven by the wiper motor causes an operating lever fixed to the motor shaft to move in a fan-shaped manner, driving the operating link connected to the wiper back and forth, so that the wiper is directly driven by the wiper motor. The equipment is described.

(Problems to be Solved by the Invention) According to the automobile wiper device described in the above-mentioned Japanese Utility Model Publication No. 59-14296, the wiper motor is mounted on a duct panel with the motor shaft directed slightly downward from the horizontal direction. The wiper motor and the operating lever attached to the motor shaft are housed between the front panel and the front bulkhead forming the bottom of the cowl box.

Here, the operating lever needs to be long enough to drive the wiper that moves in a fan shape with an opening angle of about 120°, and the distance (height) between the front panel and the front bulkhead is at least as large as the operating lever. It is necessary to have at least twice the length of .

Therefore, the front panel, link mechanism, bonnet, etc. are inevitably placed at a high position, which increases the air resistance when the car is running. There are problems such as the inability to satisfy a design that lowers the bonnet.

(Means for Solving the Problems) An automobile wiper device according to the present invention includes a wiper motor, a gear mechanism connected to the output shaft of the wiper motor, and a wiper motor connected to the output shaft of the gear mechanism. It is equipped with a link system that is reciprocally driven and a wiper connected to the link system, and the link system is arranged in a cowl box so as to move in a substantially horizontal plane, and the wiper motor is connected with its output shaft in the longitudinal direction of the vehicle body. The gear mechanism is mounted on the dash panel so as to be directed toward the vehicle and its output shaft is located within the cowl box, and the gear mechanism is disposed within the cowl box, and the output shaft of the gear mechanism is disposed so as to rotate around a substantially vertical axis. It is something.

(Function) In the automobile wiper device according to the present invention, the rotational driving force from the wiper motor is transmitted to the link system through the gear mechanism, and the link system reciprocates, causing the wiper to reciprocate in a fan shape. Become.

The link system is disposed within the cowl box so as to move in a substantially horizontal plane, and the wiper motor is mounted on the dash panel so that its output shaft is directed in the longitudinal direction of the vehicle body and its output shaft is located within the cowl box. , the gear mechanism is disposed within the cowl box and the output shaft of the gear mechanism is arranged to rotate around a substantially vertical axis, so the link system and its crank arm (operating lever) are arranged in a substantially horizontal plane. In addition to the movement, the gear mechanism can be configured to have a flat shape in the vertical direction.

Therefore, the height of the cowl box is no longer restricted by the link system or gear mechanism of the wiper device.

(Effect of the invention) According to the automobile wiper device according to the invention,
As explained above, the wiper motor is mounted on the dash panel with its output shaft facing the longitudinal direction of the vehicle body, and the gear mechanism is arranged inside the cowl box so that its output shaft rotates around a substantially vertical axis. Since the link system is disposed within the cowl box so as to move in a substantially horizontal plane, and the link system is disposed within the cowl box so as to move within a substantially horizontal plane, the height dimension of the cowl box can be reduced. It can be flattened and a low cowl and low bonnet design is possible.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, the lower end of the windshield 2 of the automobile 1 is provided with a cowl panel 3 and a dash panel upper 4 extending in the left-right direction so as to support the lower end of the windshield 2. A cowl box 5 with a closed cross section is formed, and a dash panel lower 6 is provided below from the front end position of the dash panel upper 4.

The lower end of the windshield 2 is fixed to the rear end of the cowl panel 3 by positioning blocks 7 provided at several locations along its entire width, an adhesive 8, and a dam member 9. The entire area is covered with a molding 10. In addition, the code|symbol 11 is a bonnet (hood).

A square hole 13 for mounting the gear mechanism 12 is located near the left end of the front wall 3a of the cowl panel 3.
is formed.

A wiper motor 1 that drives wipers 14 and 15 reciprocally through the gear mechanism 12 and link system.
6 is attached to the front wall 3a of the cowl panel 3 with bolts 18 by a mounting plate 17 attached to the wiper motor 16 so that the motor shaft 16a passes through the square hole 13 and protrudes into the cowl box 5. It is mounted facing the direction.

The gear mechanism 12 is disposed within the cowl box 5, and is attached to the front wall portion 3a via the mounting plate 17.

As shown in FIGS. 2 and 3, the gear mechanism 12 includes a worm gear 19 fixed to a motor shaft 16a, a worm wheel 20 that meshes with the worm gear 19, and a cover. 20a is arranged so as to be rotatable around a vertical axis.

One end of a crank arm 23 for driving a link system is fixed to the gear shaft 20a with a nut 21.

In other words, when the motor shaft 16a is rotationally driven,
The crank arm 23 is rotationally driven via the worm gear 19, the worm wheel 20, and the gear shaft 20a.

The left and right pair of wipers 14, 15 are rotatably supported by the cowl panel 3 at each base end, and the upper ends of each drive arm 24, 25, which forms a predetermined angle with each wiper 14, 15, are attached to the base end. is fixed.

The right link 21 of the link system is rotatably pin-coupled at one end to the lower end of the drive arm 24 and the other end to the lower end of the drive arm 25, and the left link 22 has one end connected to the lower end of the drive arm 25. The lower end and the other end are rotatably pin-coupled to the other end of the crank arm 23. The link system includes a crank arm 23, links 21 and 22, and drive arms 24 and 25, and is disposed within the cowl box 5.

Next, the operation of the automobile wiper device will be explained.

When a wiper drive switch (not shown) is turned on, the wiper motor 16 is rotationally driven, and the motor shaft 16a, that is, the worm gear 19 is rotationally driven, and the crank arm 23 is rotationally driven via the worm wheel 20 and the gear shaft 20a. .

Then, as the other end of the link 22 is rotationally driven, the links 21 and 22 are reciprocated left and right, and the wipers 14 and 15 are synchronously reciprocated in a fan shape at a predetermined angle via the drive arms 24 and 25. Driven.

As explained above, the wiper motor 16 is mounted on the front wall 3a of the cowl panel 3 so that the motor shaft 16a is directed in the longitudinal direction of the vehicle and projects into the cowl box 5. Since the shaft 20a is configured to rotate around the vertical axis, the locus of movement of the link system and its crank arm 23 becomes a horizontal plane, and the gear mechanism 12 can be configured to be flat in the vertical direction.

Therefore, the height of the cowl box 5 can be reduced and flattened, making it possible to adopt a low cowl low bonnet design.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view of the main parts around the wiper device of an automobile, Fig. 2 is a longitudinal side view of the main parts, and Fig. 3 is the surrounding parts of the wiper motor and gear mechanism. FIG. 3...Cowl panel, 4...Dutch panel upper, 5...Cowl box, 6...Dutch panel lower, 12...Gear mechanism, 14, 15...
Wiper, 16... Wiper motor, 16a...
Motor shaft, 19... Worm gear, 20... Worm wheel, 20a... Gear shaft, 21, 22...
...Link, 23...Crank arm, 24, 25
...Drive arm.

Claims (1)

[Claims for Utility Model Registration] A wiper motor, a gear mechanism connected to the output shaft of the wiper motor, a link system connected to the output shaft of the gear mechanism and driven reciprocally by the wiper motor, and a link system connected to the link system. a windshield wiper, the link system is arranged in a cowl box so as to move in a substantially horizontal plane, and the wiper motor has its output shaft directed in the longitudinal direction of the vehicle body, and its output shaft is located in the cowl box. What is claimed is: 1. A wiper device for an automobile, wherein the gear mechanism is disposed within a cowl box and an output shaft of the gear mechanism is disposed to rotate around a substantially vertical axis.