JPH0640312A - Wiper arm blade for vehicle - Google Patents

Abstract

PURPOSE:To provide a wiper arm blade for a vehicle, which can prevent the wiper arm blade from becoming rusty and avoid mud and dust from entering a car room, and match a car body in design. CONSTITUTION:A wiper arm blade 1 for a vehicle is provided with the outside of a blade cover 4 covering a wiper blade 2 and an arm cover 5 covering the outside of a wiper arm 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wiper arm blade used for wiping a wiping surface such as windshield glass.

[0002]

2. Description of the Related Art As a vehicle wiper arm blade for wiping a wiping surface, one disclosed in Japanese Utility Model Laid-Open No. 3-35858 is known.

In the vehicle wiper arm blade described in the above publication, a wiper blade is provided with a blade rubber, a lever yoke to which the blade rubber is attached, and a blade lever rotatably connected to the lever yoke. The wiper blade is pivotally attached to the wiper arm, and the retainer of the wiper arm and the arm head are pivotally attached.

[0004]

In the above-mentioned conventional vehicle wiper arm blade, when assembled to the vehicle body,
Since the wiper blade and wiper arm are exposed, it is easy to get rain or water directly, and there is a concern that metal lever yoke, blade lever and wiper arm may be rusted, and mud and dust are directly exposed. Since it is easily caught, it has been feared that abrasion or abnormal noise may occur when it is caught in a rotating portion of mud or dust. In addition, since the lever yoke with the blade rubber attached, the blade lever and the wiper arm have an uneven outer shape, it is difficult to match the design with the outer surface of the vehicle body that is a flash surface, which gives a problem of giving a feeling of strangeness. The problem was to solve the problem.

[0005]

OBJECT OF THE INVENTION Wiper arm for vehicle according to the present invention
The blade provides a wiper arm blade for a vehicle, which does not cause rust on a metal part, prevents mud and dust from entering a rotating part, and can achieve a design matching with a vehicle body. Is intended.

[0006]

[Constitution of the invention]

[0007]

SUMMARY OF THE INVENTION A vehicle wiper arm blade according to the present invention includes a wiper blade holding a blade rubber for wiping a wiping surface and a wiper arm connecting portion, and a pivot shaft on one end side. The other end side of the arm head having a connecting portion and the other end side of a retainer having an arm piece having a wiper blade connecting portion on one end side are pivotally attached, and the arm head side and the retainer side. A wiper arm having an arm spring locked between the wiper arm, a blade cover that covers the outer side of the wiper blade, and an arm cover that covers the outer side of the wiper arm are provided, and a more preferable embodiment is provided. In an aspect, the arm cover includes an arm cover portion that covers the outside of the arm head, a retainer, and an arm piece. It is characterized in that a flexible portion is provided between the arm cover portion that covers the outside and the arm cover portion that covers the outside. It is characterized in that it has a length that substantially coincides with the tip, and in the same manner in the embodiment, the arm cover is characterized in that it has a substantially integral outer shape with the blade cover.

[0008]

The vehicle wiper arm according to the present invention
In the blade, since the outer side of the wiper blade is covered with the blade cover and the outer side of the wiper arm is covered with the arm cover, the wiper blade and the wiper arm are invisible from the outside by the blade cover and the arm cover.

[0009]

1 to 8 show an embodiment of a vehicle wiper arm blade according to the present invention. FIG. 1 is a front view, FIG. 2 is a left side view of FIG. 1, and FIG. 1 is a rear view, FIG. 4 is a vertical cross-sectional view of FIG. 1, FIGS. 5, 6 and 7 are cut-away end views of each part of FIG. 3, and FIG. 8 is an external view of a state of being attached to a vehicle body.

The illustrated vehicle wiper arm blade 1
Is mainly composed of a wiper blade 2, a wiper arm 3, a blade cover 4, and an arm cover 5.

As is apparent from FIGS. 2 and 3, the wiper blade 2 is provided with a rubber-made long blade rubber 2a, which is arranged along the length direction of the blade rubber 2a. Lever yoke 2b, 2b, 2b, 2
b holds the blade rubber 2a. Each of the lever yokes 2b, 2b, 2b, 2b is connected to the primary blade lever 2c shown in FIG. 3 via two secondary blade levers not shown, and the lever yokes 2b, 2b, 2b, 2b are blade rubbers. 2a
When it comes into contact with the wiping surface W shown in FIG. 8 in a curved state, it rotates with respect to the secondary blade lever and the primary blade lever 2c. A wiper arm connecting portion 2c1 for mounting a wiper arm 3 to be described later is provided substantially at the center of the primary blade lever 2c.
Is provided.

A blade cover 4 is attached to the outside of the wiper blade 2.

The blade cover 4 is formed of a thin resin material and has a U-shaped cross section. The blade cover 4 has an elongated shape along the length direction of the blade rubber 2a. Top wall 4a, outer wall 4b,
The inner wall 4c and the tip wall 4 near the ends of the blade rubber 2a
d, a base end wall 4e is provided, and the side facing the top wall 4a is open.

The blade cover 4 has a contour slightly curved from the base end wall 4e toward the tip wall 4d and slightly larger than the contour of the wiper blade 2.

Further, as is apparent from FIG. 3, the blades formed in the form of small protrusions are formed at the open sides of the outer side wall 4b and the inner side wall 4c at positions facing each other corresponding to the primary blade lever 2c of the wiper blade 2. Presser foot 4b1, 4b
1, 4b1, 4b1 are provided, and these blade retainers 4b1, 4b1, 4b1, 4b1 are mounted on the ceiling wall 4a by fitting the blade cover 4 on the wiper blade 2 and then fitting it to the primary blade lever 2c. In order to press and protect the primary blade lever 2c, the metallic primary blade lever 2 with the blade rubber 2a of the wiper blade 2 exposed.
c, the secondary blade lever, the lever yoke 2
b, 2b, 2b, 2b are covered with a blade cover 4.

As shown in FIG. 4, a portion of the inner wall 4b on the wiper arm 3 side has a rectangular wiper arm insertion hole 4b2 at a position corresponding to the wiper arm connecting portion 2c1 provided on the primary blade lever 2c. The wiper arm 3 is attached to the wiper arm connecting portion 2c1 through the wiper arm insertion hole 4b2.

As is apparent from FIGS. 3 and 4, the wiper arm 3 includes an arm head 3a and an arm piece 3
A retainer 3b provided with b1 and an arm spring 3c for holding contact pressure are provided.

A pivot shaft connecting portion 3a1 for attaching to a pivot shaft (not shown), which is a power end, is provided on one end side of the arm head 3a on the lower side in FIG. The end side is connected to one end side of the retainer 3b via the rivet pin 3a2. The retainer 3b is bent with respect to the arm head 3a with the rivet pin 3a2 as a fulcrum. One end of an arm piece 3b1 bent to the wiper blade 2 side in a substantially crank shape is fixed to the other end of the retainer 3b, and the other end of the arm piece 3b1 is fixed to the other end as shown in FIG.
A wiper blade connecting portion 3b3, which is formed in a U shape and is fitted to the wiper arm connecting portion 2c1 provided on the wiper blade 2, is provided.

Further, one end of the retainer 3b is hooked to the rivet pin 3a2 via a hook 3c1 by one side of an arm spring 3c for holding contact pressure, and the other side of the arm spring 3c has an arm piece 3b1. It is attached to one end side in a state of having elastic restoring force. The retainer 3b is biased by the arm spring 3c toward the wiping surface W side shown in FIG. 8 with respect to the arm head 3a with the rivet pin 3a2 as a fulcrum.

An arm cover 5 is provided outside the wiper arm 3.
Is installed.

The arm cover 5 is made of a thin resin material and has a U-shaped cross section.
The arm cover 5 includes an arm head side arm cover 5a for covering the outside of the arm head 3a provided on the arm 3, and a retainer side arm cover 5b for covering the outside of the retainer 3b provided on the arm 3. , And a connecting arm cover 5c for covering the outside of the rivet pin 3a2.

On the arm head side arm cover 5a, a ceiling wall 5 having a long shape along the length direction of the arm head 3a is formed.
a1, a side wall 5a2, a side wall 5a3, an end wall 5a4 near one end of the arm head 3a, and a cap 5a5 corresponding to the pivot shaft connecting portion 3a1 of the arm head 3a. Wall 5a4
The side opposite to is open.

The arm head side arm cover 5a has an outer shape which is similar to the outer shape of the arm head 3a and slightly larger than the outer shape of the arm head 3a.

Further, as shown in FIGS. 3 and 7, the arm head retainers 5a6 and 5a6 formed in the form of small protrusions are formed at the positions facing each other corresponding to the arm head 3a on the open side of the side walls 5a2 and 5a3. , 5a6, 5a6 are provided, and these arm head retainers 5a6, 5a65a are provided.
6, 5a6 covers the wiper arm 3 with the arm cover 5 and then presses and holds the arm head 3a toward the ceiling wall 5a1 by fitting the arm cover 5 onto the arm head 3a. The outside is covered by.

On the retainer side arm cover 5b, the arm piece 3b1 is provided along the length direction of the retainer 3b and has the tip thereof.
An elongated top wall 5b1, an outer wall 5b2, and an inner wall 5b3 that extend further from the tip of the blade along the blade cover 4.
And the end wall 5b located at the upper end in FIG.
4 is provided, and the side facing the top wall 5b1 and the side facing the end wall 5b4 are open.

Here, the top wall 5b1 of the retainer side arm cover 5b is located on the same plane as the top wall 5a of the blade cover 4.

Outer wall 5b of retainer side arm cover 5b
2 has a substantially flat shape from a base end corresponding to one end side of the retainer 3b to an end wall 5b4 whose length matches the tip wall 4d of the blade cover 4, and the inner side wall 5b3 of the retainer side arm cover 5b is The side is recessed in a shape similar to the outer shape of the blade cover 4, and the one end side portion of the retainer 3b is wide so as to form a plane continuous with the outer wall 4b of the blade cover 4.

Further, as shown in FIG. 3, the outer side walls 5b2,
Retainer retainers 5b5, 5b5, 5b5 formed in the shape of small protrusions are provided at the opposing positions corresponding to the central portion of the retainer 3b on the open side of the inner wall 5b3 and at the opposing positions corresponding to one end side of the retainer 3b. 5b5 are provided, and these retainer retainers 5b5, 5b5, 5b5, 5b are provided.
5 covers the arm 3 with the arm cover 5 and then fits the arm cover 5 against the retainer 3b to press and protect the retainer 3b toward the top wall 5b1.

A rectangular wiper arm insertion hole 5b6 is formed in a portion of the inner wall 5b3 of the retainer arm cover 5b at a position corresponding to the wiper arm connecting portion 2c1 provided on the primary blade lever 2c. The other end of the arm piece 3b1 is inserted into the blade cover 4 through the wiper arm insertion hole 5b6.

On the other hand, a connecting arm cover 5c is attached to an open portion facing the end wall 5a4 of the arm head side arm cover 5a and an open portion facing the end wall 5b4 of the retainer side arm cover 5b. .

The connecting arm cover 5c is made of rubber and has a U-shaped section and a bellows shape. When the retainer 3b is bent with respect to the arm head 3a so that the retainer side arm cover 5b is also bent with respect to the arm head side arm cover 5a, both of the arm covers 5a, 5a are connected to each other. And follow it to fold.

Here, the outer side wall 5b2 of the retainer side arm cover 5b of the arm cover 5 has a flat shape corresponding to both side walls 4b and 4c of the blade cover 4 and is provided on the retainer side arm cover 5b. Inner wall 5b
3 forms a continuous plane with the outer side wall 4b of the blade cover 4, and the top wall 5b1 of the arm cover 5 and the top wall 4a of the blade cover 4 are located on the same plane, the blade cover 4 and the arm cover 5 Is integrally expressed in appearance.

In the vehicle wiper arm blade 1 having such a structure, when the pivot shaft connecting portion 3a1 of the arm head 3a provided on the wiper arm 3 is attached to a pivot shaft (not shown) on the vehicle body side, the retainer 3b is provided.
Is urged toward the wiping surface W side by the arm spring 3c with respect to the arm head 3a, so that the blade rubber 2a of the wiper blade 2 mounted on the arm piece 3b1 is pressed against the wiping surface W.

Therefore, when a wiper switch (not shown) is turned on, the wiper motor is activated to reciprocally rotate the pivot shaft, so that the wiper arm 3 and the wiper blade 2 are reciprocally swung on the wiping surface W to wipe the wiper blade. The wiping surface W is wiped with the blade rubber 2a of 2.

Since the wiper blade 2 is covered with the blade cover 4 on the outer side and the wiper arm 3 is covered with the arm cover 5 on the outer side, the wiper blade 2 and the wiper arm 3 are operated without being exposed to the outside. It will be done.

[0036]

As described above, since the vehicle wiper arm blade according to the present invention has the above-mentioned structure, the outer side of the wiper blade is covered with the blade cover and the outer side of the wiper arm is the arm. Since it is covered with a cover, it does not generate rust on the metal part, it can also prevent mud and dust from entering the rotating part, and it is excellent in design matching with the car body Play.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a vehicle wiper arm blade according to the present invention.

FIG. 2 is a left side view of the vehicle wiper arm blade shown in FIG.

3 is a rear view of the vehicle wiper arm blade shown in FIG. 1. FIG.

4 is a longitudinal sectional view of the vehicle wiper arm blade shown in FIG. 1. FIG.

5 is an end view taken along line AA of the vehicle wiper arm blade shown in FIG.

6 is a BB line end view of the vehicle wiper arm blade shown in FIG. 3; FIG.

7 is an end view of the vehicle wiper arm blade shown in FIG. 3 taken along the line CC.

FIG. 8 is an external view of the vehicle wiper arm blade shown in FIG. 1 attached to a vehicle body.

[Explanation of symbols]

 1 wiper arm blade for vehicle 2 wiper blade 2c1 wiper arm connecting part 3 wiper arm 3a arm head 3a1 pivot shaft connecting part 3b retainer 3b1 arm piece 3b3 wiper blade connecting part 3c arm spring 4 blade cover 5 arm cover

Claims (4)

[Claims] 1. A wiper blade which holds a blade rubber for wiping a wiping surface and which has a wiper arm connecting portion, another end side of an arm head having a pivot shaft connecting portion at one end side, and one end A wiper arm having an arm spring pivotally attached to the other end of a retainer provided with an arm piece having a wiper blade connection portion on the side, and having an arm spring locked between the arm head side and the retainer side; A wiper arm blade for a vehicle, comprising: a blade cover that covers the outside of the wiper blade; and an arm cover that covers the outside of the wiper arm. 2. The vehicle according to claim 1, wherein the arm cover has a flexible portion between an arm cover portion that covers the outside of the arm head and an arm cover portion that covers the outside of the retainer and the arm piece. Wiper arm blade. 3. The vehicle wiper arm blade according to claim 1, wherein the tip of the arm cover is further extended from the tip of the arm piece and has a length substantially matching the tip of the blade cover. 4. The vehicle wiper arm blade according to claim 1, wherein the arm cover and the blade cover form a substantially integral outer shape.