KR100189365B1 - A wiper device with an auxiliary wiper blade of an automobile - Google Patents

Abstract

The present invention relates to a wire device of an automobile having an auxiliary blade, wherein the main wiper blade (2) is provided on the rotating shaft (1) installed so as to rotate clockwise and counterclockwise through a ring cage by a wire motor. 3) The main wiper blade (2) is mounted so as to be integrally rotated and attached to the main wiper blade (2) so that the auxiliary wiper blade (4) can be rotated together, and expands and extends the entire length of the blade according to the rotation angle of the front glass. It is designed to be moved through the front and rear movement means (5, 6) to expand the washing area, the secondary wiper blade is moved back and forth by the cam (5) while rotating with the main wiper blade edge of the windshield Since it is wiped up, it is effective to widen the driver's field of view through the windshield.

Description

Car wiper device with auxiliary blade

1 is an explanatory view showing the operation trajectory of the wire device with an auxiliary blade according to the present invention,

2 is an exploded perspective view of the wiper blade with an auxiliary blade according to the present invention,

3 is an explanatory view showing the operation trajectory of the wiper device according to the prior art.

* Explanation of symbols for main parts of the drawings

1: rotating shaft 2: main wiper blade

2a: channel 2b: support protrusion

3: windshield 4: secondary wiper blade

4a: Roller 5: Cam

5a: rising projection surface 5b: falling depression surface

6: spring

The present invention relates to a wiper device for an automobile, and in particular, the auxiliary wiper blade is pivotally mounted to and from the main wiper blade while being resiliently moved back and forth through the cam to provide a driving convenience by expanding the washer area of the wiper blade. It relates to a wiper device of a vehicle equipped with a blade.

The wiper device for cleaning the windshield of a conventional vehicle is to wipe the windshield by rotating the wiper arm equipped with the wiper blade by spraying the washer fluid pumped from the washer fluid tank to the windshield via an injection nozzle.

That is, as shown in FIG. 3, the wiper blade 12 is fixedly mounted to the wiper arm 11 connected to the wiper motor (not shown) via the pivot shaft, and when the wiper motor is rotated, the left and right sides are rotated. When the rotational force of the motor is transmitted through the wiper link cage (not shown) of the wiper arm 11 of the wiper arm 11, the wiper blade 12 integrally connected thereto is rotated in close contact with the windshield and It is supposed to be cleaned.

However, as the conventional wiper blade 12 is rotated with a certain length, only the part of the windshield can be wiped while forming an arc trajectory. This prevents the driver's front field of view from driving in rainy weather, which is not sufficient to secure a sufficient field of view. There was an inconvenience to give.

Accordingly, the present invention has been made to solve the above-mentioned drawback, the auxiliary wiper blade is moved to the main wiper blade having a certain length so as to be rotated back and forth through the cam to extend the length of the entire blade is mounted so that it can be rotated together. Accordingly, an object of the present invention is to provide a wiper device for a vehicle having an auxiliary blade that allows the driver to easily secure a wider driving field by expanding the washing area of the windshield by the wiper blade.

The present invention for achieving the above object, the main wiper blade is integrally rotated in close contact with the windshield on the rotating shaft installed by the wire motor to rotate clockwise and counterclockwise via the ring cage. The main wiper blade is mounted so that the auxiliary wiper blade can be rotated together, and the entire length of the blade is stretched according to the rotation angle to move the front and rear movement means to expand the washing area of the windshield. It is.

In addition, a channel is formed at the lower portion of the main wiper blade so that the auxiliary wiper blade is supported and guided back and forth, and a support protrusion is integrally formed at a predetermined portion along the longitudinal direction, so that the auxiliary wiper blade is inserted into the channel. A plurality of rollers integrally attached to the side of the auxiliary wiper blade while being supported by the supporting protrusion are grounded to the channel and installed to be guided along the channel back and forth by the front and rear movement means, wherein the front and rear movement means is provided with a cam on the pivot shaft. The spring is hung on the auxiliary wiper blade so that the rear end surface of the auxiliary wiper blade is always in close contact with the outer circumferential surface of the cam and moves back and forth according to the shape of the outer circumferential surface of the cam.

In addition, the cam has a heart shape as a whole, and one descending depression surface is integrally formed between two rising protrusion shaft surfaces to form a smooth curved surface, and the rear end surface of the auxiliary wiper blade is applied to the pulling force of the spring on the rising protrusion surface of the cam. When it closes, the auxiliary wiper blade protrudes more than the main wiper blade to extend the overall length of the blade to expand the washer area of the blade, while the rear end surface of the auxiliary wiper blade is lowered by the pulling force of the spring In close proximity, the secondary wiper blade is housed within the main wiper blade at approximately the same length as the main wiper blade.

Since the wiper blade is mounted to be rotated together with the main wiper blade as described above, the wiper blade is wiped widely to the edge of the windshield by the auxiliary wiper blade installed to be moved back and forth by the cam according to the rotation angle of the main wiper blade. The glass makes it possible to easily secure a wider field of view.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an explanatory view showing an operation trajectory of a wire device with an auxiliary blade according to the present invention, and FIG. 2 is an exploded perspective view of a wiper blade with an auxiliary blade according to the present invention, that is, an operating motor (not shown). The main wiper blade 2 is integrally rotated in a state of being in close contact with the windshield 3 on the pivot shaft 1 installed to rotate clockwise and counterclockwise via a ring cage. The blade 2 is mounted so that the auxiliary wiper blade 4 can be rotated together and moved back and forth through the forward and backward moving means to expand and contract the entire length of the blade according to the rotation angle.

That is, a channel 2a is formed at the lower portion of the main wiper blade 2 so that the auxiliary wiper blade 4 is supported and guided back and forth, and the support protrusion 2b is integrally formed at a predetermined portion along the longitudinal direction. And a plurality of rollers 4a integrally attached to the side of the auxiliary wiper blade 4 while being supported by the supporting protrusions 2b by being inserted into the auxiliary wiper blade 4 in the channel 2a. Grounded to the channel is installed to guide the movement along the channel (2a) back and forth by the front and rear movement means.

Here, the front and rear movement means, as shown in Figures 1 and 2, while the cam (5) is mounted to the rotation shaft (1) to be rotated by the auxiliary auxiliary wiper blade on the outer peripheral surface of the cam (5) The rear end face of (4) is always in close contact with the auxiliary wiper blade 4 so that the spring 6 is moved back and forth according to the shape of the outer peripheral surface of the cap 5.

That is, the cam 5 has a heart shape as a whole, and is formed such that one descending depression surface 5b is integrally formed between the two upward protrusion surfaces 5a to form a smooth curved surface, and the rear end surface of the auxiliary wiper blade 4 is formed. When the upward projection 5a of the cam 5 is brought into close contact with the pulling force of the spring 6, the auxiliary wiper blade 4 protrudes from the main wiper blade 2 as shown in FIG. In addition to extending the overall length, the main wiper blade (2) to clean the edge of the windshield that can not wipe, thereby changing the washer area of the blade.

When the rear end surface of the auxiliary wiper blade 4 is brought into close contact with the lowering recessed surface 5b of the cam 5 by the pulling force of the spring 6, the auxiliary wiper blade 4 is substantially close to the main wiper blade 2. It is housed in the same main wiper blade (2).

As described above, as the auxiliary wiper blade 4 is extended or contracted by the cam 5 and the spring 6 according to the rotation angle, the auxiliary wiper blade is extended to the edge portion of the windshield that the main wiper blade 2 cannot clean. As a result of wiping, the driver's driving field of view through the windshield, for example in rainy weather, can be extended.

As described above, according to the wiper device of the vehicle having the auxiliary wiper blade according to the description, the auxiliary wiper blade is installed so as to be rotated together with the main wiper blade and installed elastically back and forth by the cam according to the rotation angle of the main wiper blade. Wiping wide to the edge of the windshield by the media, there is an effect that the driver can easily secure a wide driving field through the windshield.

Claims (1)

By connecting and installing the auxiliary wiper blade 4 to the rotation shaft 1 via the spring 6 so as to elastically close and rotate along the outer circumferential surface of the cam 5 installed so as to rotate together with the rotation shaft 1, the rotation shaft A wiper device for a vehicle having an auxiliary wiper blade in which the auxiliary wiper blade 4 is moved back and forth along a channel 2a formed in the lower portion of the main wiper blade 2 according to the rotation angle of (1). The cam 5 has a heart shape as a whole, and one descending depression surface 5b is integrally formed between the two raised projection surfaces 5a to form a smooth curved surface, so that the rear end surface of the auxiliary wiper blade 4 is The auxiliary wiper blade 4 protrudes from the main wiper blade 2 as it rotates along the raised protrusion surface 5a of the cam 5 to expand the washer area of the blade, while the auxiliary wiper When the rear end surface of the raid 4 is in close contact with the lowering depression surface 5b of the cam 5, the auxiliary wiper blade 4 maintains substantially the same length as the main wiper blade 2 Car wiper device with auxiliary wiper blade.