KR20000056940A - Wiper blade for use in an automobile - Google Patents

Abstract

PURPOSE: A wiper blade of car is provided to simplify the structure thereof by integrally forming a plate spring and a blade rubber and diminishing the manufacturing cost thereof. CONSTITUTION: A wiper blade of car comprises a blade rubber(34) and a plate spring(32). The blade rubber(34) removes the rainwater or other alien substances by moving on and closely contacted to the surface of a windshield(12). The plate spring(32) is integrally formed in the blade rubber(34) and has an extended portion(36) engaged to an arm bracket(16) of a wiper arm(15) by an engaging member on the upper mid portion thereof. The engaging member is a connecting pin(20) rotatably connected to a front end ring(16a) of the arm bracket(16).

Description

Car wiper blades {WIPER BLADE FOR USE IN AN AUTOMOBILE}

The present invention relates to a vehicle wiper blade, and more particularly, to a vehicle wiper blade that can simplify the structure and reduce the manufacturing cost by integrally forming the leaf spring and the blade rubber.

In general, windshields of automobiles are equipped with a wiper system for wiping the glass to secure visibility on a rainy day or to remove dust and dirt accumulated on the glass. The wiper system is usually attached to the wiper arm that rotates by the rotational force of the wiper motor that rotates the wiper link by electricity supplied from the battery, and the wiper arm that is transmitted through the wiper link, and is attached to one end of the wiper arm to the surface of the windshield. It consists of a wiper blade that wipes away.

1 is a side cross-sectional view showing a conventional vehicle wiper blade. Referring to the drawings, the wiper arm 15 and the wiper blade described above are provided on the windshield 12 fixed to the cowl panel 10. The lower end of the wiper arm 15 is fixed to the wiper link by a hinge 14, and a wiper blade is rotatably coupled around the pin 20 at the upper end.

In the structure of the wiper blade which is always kept in close contact with the surface of the windshield 12 by the spring 18, a large arc-shaped upper bracket 22 and a small arc-shaped lower bracket 24, Blade rubber 26 is fixed to the lower portion of the lower bracket (24).

The conventional vehicle wiper blade having such a configuration has a complicated structure, and because the upper bracket and the lower bracket are made of steel, the weight of the wiper motor increases because of the heavy weight, and there is a problem in that the product price is expensive.

An object of the present invention devised to solve this problem is to provide a wiper blade for a vehicle that can simplify the structure and reduce the manufacturing cost by integrally forming the leaf spring and the blade rubber.

It is another object of the present invention to provide a vehicle wiper blade which further simplifies the structure by fastening the bracket portion of the wiper arm directly to the leaf spring.

1 is a side cross-sectional view showing a conventional vehicle wiper blade,

Figure 2 is a side cross-sectional view showing a vehicle wiper blade of the present invention,

3 is a plan view showing a vehicle wiper blade of the present invention,

4 is a cross-sectional view taken along the line A-A in FIG.

5 is a cross-sectional view taken along the line B-B in FIG.

Figure 6 is a side cross-sectional view showing a vehicle wiper blade according to another embodiment of the present invention.

♣ Explanation of symbols for main part of drawing ♣

16: Arm Bracket 16a: Fixed End

20: connecting pin 30: wiper blade

32: leaf spring 34: blade rubber

34a: insert 34b: groove

34c: contact part 36: extension part

The object of the present invention described above is a blade rubber which removes rain water or foreign matter while moving in close contact with the windshield surface, and is integrally formed in the blade rubber, and the upper center point has an arm of the wiper arm by a coupling means. It is achieved by a vehicle wiper blade, characterized in that it consists of a leaf spring having an extension coupled to the bracket.

Another object of the present invention is to remove the rain water or foreign matter while moving in close contact with the windshield surface, the blade rubber is formed in the groove in the middle point, and is formed in the blade rubber spaced apart about the groove, At least one of the ends disposed in the wiper arm is achieved by a vehicle wiper blade, characterized in that it consists of a leaf spring is formed with a engaging portion is engaged with a ring formed at one end of the arm bracket of the wiper arm.

Hereinafter, a wiper blade for a vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5, and the same components as those of the conventional structure described with reference to FIG. 1 are denoted by the same reference numerals.

2 and 3 are side cross-sectional views and plan views, respectively, of the vehicle wiper blade of the present invention, FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line B-B in FIG.

As described in FIG. 1, the wiper arm 15 and the wiper blade described above are provided on the windshield 12 for providing the front view. The lower end of the wiper arm 15 is fixed to the wiper link by the hinge 14, and the wiper blade of the present invention is rotatably coupled around the pin 20 at the upper end.

In addition, the wiper blade 30 according to the preferred embodiment of the present invention is mounted to maintain a state of being always in close contact with the surface of the windshield 12 by the spring 18, as in the conventional structure, the blade at high speed Prevent 30 from injuring. In the schematic configuration of the wiper blade according to the present invention, the blade rubber 34 in contact with the surface of the windshield 12, and the leaf spring 32 integrally formed with the blade rubber 34 by insert molding Consists of

Here, in the blade rubber 34 for removing rainwater or foreign matter on the surface of the windshield 12, an elastic leaf spring 32 is integrally formed, and a coupling means is formed at the upper center point of the leaf spring 32. It is provided with an extension 36 that is coupled to the arm bracket 16 of the wiper arm 15. This extension 36 extends vertically upwards from the surface of the leaf spring 32 by a predetermined length.

As shown more clearly in FIG. 3, an extension 36 formed at the center of the leaf spring 32 extends side by side along the longitudinal direction of the wiper blade 30, with the blade 30 at the center of the wiper arm. Engaging means for engaging the arm bracket 16 of (15) is fitted.

The connecting pin 20 employed as the coupling means in the present invention is pivotable to the tip ring 16a of the arm bracket 16 in a state of being fixed to the extension 36 across the leaf spring 32. To be combined. Although not shown here, when the connecting pin 20 is coupled to the hook 16a of the arm bracket 16, a conventional locking device may be employed to prevent the wiper blade 30 from being easily detached.

The leaf spring 32 has a shape in which a cross-sectional area increases from both ends to the center so as to provide a uniform surface pressure on the windshield surface. However, the gradient at this time varies depending on the driver's seat and the passenger seat, and may have various shapes and sizes depending on the model and the maximum driving speed.

Next, FIGS. 4 and 5 are cross-sectional views taken along the lines A-A and B-B in FIG. 3, respectively, to divide the blade rubber 34 into three parts. That is, the insert portion 34a in which the leaf spring 32 is integrally formed by insert molding, the contact portion 34c which is always in contact with the windshield 12, and the insert portion 34a It is composed of grooves 34b disposed between the contact portions 34c to provide elastic restoring force to the contact portions 34c at the time of blade operation so that the direction can be reactivated upon return.

In the wiper blade of such a configuration, at the time of assembly, the connecting pin 20 fitted in the extension 36 of the leaf spring 32 is simply connected to the hook 16a provided at the tip of the arm bracket 16. It can be fixed, and it is also possible to fix more reliably via the locking device as mentioned above as needed.

Next, FIG. 6 is a side sectional view showing a vehicle wiper blade according to another embodiment of the present invention, and the same reference numerals are used for components having the same functions as the components shown in FIG. 2.

As shown, in the wiper blade 40 of the present embodiment, instead of employing a separate connecting pin 20 for engaging the ring 16a of the arm bracket 16, the engaging portion in the leaf spring 42 After the formation of 42a, a structure in which the hook 16a was directly fitted to the engaging portion 42a was illustrated. In addition, the groove 40a was formed at the intermediate point of the rubber 44 to make the locking portion 42a. By adopting such a structure, it is possible to realize a wiper blade of a simpler structure.

According to the present invention described above, since the leaf spring is integrally formed with the blade rubber, the structure is simple and the manufacturing cost can be reduced. In addition, since the weight of the entire wiper blade is light, the frictional force with the windshield surface is small, thereby reducing the load on the wiper motor.

Claims (5)

Blade rubber 34 for removing rain water and foreign matter while moving in close contact with the surface of the windshield 12, The leaf spring 32 is integrally molded in the blade rubber 34 and has an extension portion 36 which is coupled to the arm bracket 16 of the wiper arm 15 by a coupling means at its upper center point. Vehicle wiper blades, characterized in that consisting of. The method of claim 1, The coupling means is characterized in that the connecting pin 20 is rotatably coupled to the front end ring (16a) of the arm bracket 16 in a fixed state across the leaf spring (32) Car wiper blades. The method of claim 1, The leaf spring (32) is a vehicle wiper blade, characterized in that the cross-sectional area is increased from both ends to the center to provide a uniform surface pressure on the windshield surface. The method of claim 1, The leaf spring (32) is a vehicle wiper blade, characterized in that the insert is molded integrally with the blade rubber (34). Blade rubber 44 having grooves 40a formed in the intermediate point by removing rain water or foreign matter while moving in close contact with the surface of the windshield 12, It is formed in the blade rubber 44 spaced apart from the groove 40a, and at least one of the ends disposed in the groove 40a is formed at one end of the arm bracket 16 of the wiper arm 15. Vehicle wiper blade, characterized in that consisting of a leaf spring 32 is formed with a engaging portion (42a) coupled to the ring (16a).