JPH0713624U - Vehicle wiper blade - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a wiper blade for a vehicle that can be smoothly wiped and does not leave unwiping. [Structure] Blade rubber holding portion 3a of lever yoke 3
2, 3b2, 3b2 reduce rattling between the blade rubber main body 2a of the blade rubber 2 and the lever yoke 3, and allow a large inclination angle of the blade rubber 2 with respect to the lever yoke 3 in the longitudinal direction. Guide 3a1 for reducing rattling and allowing tilt angle
1, 3a12, 3a12, 3b6, 3b6, 3b7, 3
The wiper blade 1 for vehicles provided with b7, 3b7, 3b7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle wiper blade used to wipe a wiped surface of a windshield glass of an automobile.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, as a vehicle wiper blade for wiping a wiping surface such as a windshield glass of an automobile, a lever yoke has a substantially C-shaped cross section. A blade rubber holding portion has a substantially T-shaped cross section. The main body portion of the blade rubber is held so as to be movable in its length direction, and this lever yoke is rotatably attached to the blade lever. Since the blade lever is connected to the wiper arm side, when the wiper arm transmits the power of the wiper motor and swings back and forth on the wiping surface, the arm spring built in this wiper arm causes the lever yoke, blade lever and blade rubber to move. Since it is pressed toward the wiping surface side, the lip protruding from the main body of the blade rubber makes sliding contact with the wiping surface. The blade lever holding part consists of a plane that is almost parallel to the length direction of the blade rubber, and the body of the blade rubber moves in the length direction of the blade rubber holding part of the lever yoke, so it corresponds to the curvature of the wiping surface. The lip is brought into sliding contact with the wiping surface while being held by the blade rubber holding part.

[0003]

[Problems to be solved by the device]

 In the conventional vehicle wiper blade described above, the blade rubber holding portion formed on the lever yoke allows the elastic deformation of the blade rubber corresponding to the curved wiping surface by moving the blade rubber in its length direction. Due to this structure, a relatively large clearance is set between the blade rubber and the main body, and if there is a relatively large clearance between the blade rubber holding section and the main body, the wiping surface There is a possibility that the wiping action when there are few raindrops on the blade causes the frictional force between the blade rubber and the wiping surface to increase, causing the body of the blade rubber to dance at the blade rubber holding part and cause a so-called wiper judder. In addition to that, since the blade rubber holding part is made of a plane substantially parallel to the length direction of the blade rubber, When the rubber elastically deforms in response to the curved wiping surface, there is a limit to the angle at which the blade rubber falls with respect to the lever yoke, and it may be difficult to perform wiping by following the wiping surface with a large curvature. However, there is a problem that unwiping may occur when wiping cannot be performed following the wiping surface, and it has been a problem to solve these problems.

[0004]

[The purpose of the device]

 A vehicle wiper blade according to the present invention is intended to provide a vehicle wiper blade that can be smoothly wiped and has no unwiping residue.

[0005]

[Constitution of device]

[0006]

[Means for Solving the Problems]

 The vehicle wiper blade according to the present invention reduces rattling between the blade rubber main body of the blade rubber and the lever yoke at the blade rubber holding portion of the lever yoke, and the length direction of the blade rubber relative to the lever yoke. It is characterized in that it is provided with a rattling reduction / inclination angle allowing guide for allowing a large inclination angle, and it is also used for adjusting in the embodiment adopted as necessary. The inclination angle setting guide may be formed in the blade rubber holding portion in the form of a small projection protruding toward the blade rubber.

[0007]

[Function of the device]

 In the wiper blade for a vehicle according to the present invention, the guide for reducing rattling and allowing the tilt angle is provided on the blade rubber holding portion of the lever yoke to prevent rattling between the blade rubber body of the blade rubber. By reducing the rattling of the blade rubber with respect to the lever yoke, even if the frictional force between the blade rubber and the wiping surface becomes large when there are few raindrops attached to the wiping surface, the blade rubber will not The blade rubber retainer does not dance, and the angle of inclination of the blade rubber with respect to the lever yoke in the longitudinal direction is allowed to be large.Therefore, when the blade rubber elastically deforms in response to a curved wiping surface, it does not move against the lever yoke. The limit of the inclination angle of the blade rubber expands. Therefore, even when there are few raindrops adhering to the wiping surface, the blade rubber will not dance in the blade rubber holding part, and the blade rubber will follow the curving of the wiping surface by changing the inclination angle appropriately. Will be done.

[0008]

【Example】

 1 to 5 show an embodiment of a vehicle wiper blade according to the present invention.

The illustrated vehicle wiper blade 1 is mainly composed of a blade rubber 2, a lever yoke 3, and a blade lever 4, and the lever yoke 3 is made of a resin-made first lever yoke 3 a and a second lever yoke 3. Lever yoke 3b. A first lever yoke 3a and a second lever yoke 3b are attached to one side of the blade lever 4, respectively, and a first lever yoke 3a and a second lever yoke 3a are attached to the other side of the blade lever 4. 3b and 3b are attached respectively.

The blade rubber 2 is provided with a rectangular elongated rubber body 2a and a lip 2b protruding from the blade rubber body 2a along the length direction of the blade rubber body 2a in a substantially cross section. Has been. On both sides of the blade rubber main body 2a, there are provided vertibra housing grooves 2a1, 2a1 and lever mounting grooves 2a2, 2a2 formed in a groove shape along the length direction of the blade rubber main body 2a, respectively. The body 2a has a lever yoke mounting portion 2a3 for mounting on a lever yoke 3, which will be described later, on the upper side of the lever mounting grooves 2a2, 2a2. Since the flexible plate-shaped vertiblers 5 and 5 are housed in the vertibra housing grooves 2a1 and 2a1, respectively, the blade rubber 2 is flexible in the longitudinal direction thereof. Blade blade holding portions 3a2 provided on the first lever yoke 3a and blade lever holding portions 3b2, 3b2 provided on the second lever yoke 3b are attached to the lever attachment grooves 2a2, 2a2, respectively.

Further, the lip 2b provided on the blade rubber 2 projects along the length direction of the blade rubber main body 2a toward the wiping surface, and the lip 2b and the blade rubber main body 2a have a thin wall shape. Since they are connected by the connecting portion 2c, the lip 2b can be laid down on both sides of the blade rubber body 2a along the length direction of the blade rubber body 2a.

The blade attached to the lever mounting grooves 2a2, 2a2 of the blade rubber 2 The first lever yoke 3a provided with the rubber holding portion 3a2 is, as is apparent from FIG. 4, the first lever yoke body 3a1. A blade lever mounting portion 3a3 is formed substantially at the center thereof, and the blade lever mounting portion 3a3 is provided with a shaft 3a4 in a notch 3a10. Since the shaft support portion 4a1 formed at the end of the blade lever body 4a of the blade lever 4 is inserted into the notch 3a10, the shaft 3a4 is rotatably supported by the shaft support portion 4a1.

The blade rubber holding portion 3a2 is provided near one end of the first lever yoke body 3a1 of the first lever yoke 3a. The blade rubber holding portion 3a2 has a C-shaped cross section. Make a state. Inside the blade rubber holding portion 3a2 having a C-shaped cross section, one rattling reduction / inclination angle allowing guide 3a11 is provided on the first lever yoke body 3a1 side, and On the opposite side of the lever yoke main body 3a1 side, the other rattling reduction / inclination angle allowing guides 3a12, 3a12 are provided. One rattling reduction / inclination angle allowance guide 3a11 provided on the side of the first lever yoke body 3a1 is a cylinder extending in the length direction in a direction orthogonal to the length direction of the blade rubber 2. Since it is formed in a cut shape, it slightly protrudes from the first lever yoke body 3a1 toward the blade rubber body 2a1 of the blade rubber 2. The other rattling reduction / inclination angle allowance guides 3a12 and 3a12 provided on the side opposite to the first lever yoke body 3a1 side are orthogonal to the length direction of the blade rubber 2. Since it is formed into a curved shape, it protrudes from the side opposite to the first lever yoke body 3a1 at a position slightly shifted corresponding to one rattling reduction / inclination angle allowing guide 3a11. One rattling reduction / inclination angle allowing guide 3a11 slightly protrudes from the first lever yoke body 3a1 toward the blade rubber body 2a1 of the blade rubber 2 and the other rattling reduction / inclination guide is formed. Since the angle allowance guides 3a12, 3a12 slightly project from the side opposite to the first lever yoke body 3a1 in correspondence with the one rattling reduction / inclination angle allowance guide 3a11, the gap between them is provided. L1 is slightly larger than the thickness L0 of the lever mounting portion 2a3 of the blade rubber 2. The dimension L1 between one rattling reduction / inclination angle allowing guide 3a11 and the other rattling reduction / inclination angle allowing guide 3a12, 3a12 is defined by the lever mounting portion 2a3 of the blade rubber 2. Since it is slightly larger than the thickness L0, the amount of play that the lever mounting portion 2a3 moves in the blade rubber holding portion 3a2 of the blade rubber 2 is small, and the lever mounting portion 2a3 is The inclination angle with respect to the first lever yoke 3a is set to be much larger than that of the blade rubber holding portion 3a2 having a flat shape.

A shaft support portion 3a5 is formed near the other end of the first lever yoke body 3a1 of the first lever yoke 3a, and the shaft support portion 3a5 is connected to the second lever yoke 3b. A shaft 3b4 in a first lever yoke attachment portion 3b3 provided on the second lever yoke body 3b1 has a shaft 3b4 rotatably supported.

The blade mounted on the lever mounting grooves 2a2, 2a2 of the blade rubber 2 The second lever yoke 3b provided with the rubber holding portions 3b2, 3b2 is, as is clear from FIG. A substantially central portion of the lever yoke body 3b1 is a first lever yoke mounting portion 3b3, and the first lever yoke mounting portion 3b3 is provided with a shaft 3b4 in a notch 3b5. Since the shaft support portion 3a5 formed on the first lever yoke 3a is inserted into the notch 3b5, the shaft 3b4 is rotatably supported by the shaft support portion 3a5.

The blade rubber holding portions 3b2, 3b2 are provided near both end portions of the second lever yoke body 3b1 of the second lever yoke 3b, and the blade rubber holding portions 3b2, 3b2 have cross-sectional shapes, respectively. It is C-shaped. Inside the blade rubber holding portions 3b2, 3b2 having a C-shaped cross section, one rattling reduction / inclination angle allowance guide 3b6, 3b6 is provided on the second lever yoke body 3b1 side. On the side opposite to the second lever yoke body 3b1 side, the other rattling reduction / inclination angle allowing guides 3b7, 3b7 and 3b7, 3b7 are provided.

One rattling reduction / tilt angle allowance guide 3b6, 3b6 provided on the first lever yoke body 3a1 side is formed of a cylinder in a direction orthogonal to the length direction of the blade rubber 2. Since it is formed in a shape cut in the length direction, it slightly protrudes from the second lever yoke body 3b1 toward the blade rubber body 3a1 of the blade rubber 2.

Further, the other rattling reduction / inclination angle allowing guides 3 b 7, 3 b 7 and 3 b 7, 3 b 7 provided on the side opposite to the second lever yoke body 3 b 1 side are provided in the length direction of the blade rubber 2. Since it is formed in a curved shape in a direction orthogonal to, it is slightly displaced from the side opposite to the second lever yoke body 3b1 in correspondence with the one rattling adjustment / tilt angle setting guide 3b6, 3b6. Protruding in position.

One rattling reduction / inclination angle allowance guide 3b6, 3b6 slightly protrudes from the second lever yoke body 3b1 toward the blade rubber body 2a1 of the blade rubber 2, and the other guide The rattling reduction / inclination angle allowance guides 3b7, 3b7 and 3b7, 3b7 correspond to the rattling reduction / inclination angle allowance guide 3b6 from the side opposite to the second lever yoke body 3b1. Since it is slightly protruding, the dimension L1 between them is slightly larger than the thickness dimension L0 of the lever mounting portion 2a3 of the blade rubber 2, and like the first lever yoke 3a. Has become.

The dimension L1 between one rattling reduction / inclination angle allowance guide 3b6, 3b6 and the other rattling reduction / inclination angle allowance guide 3b7, 3b7 and 3b7, 3b7 is a blade rubber. 2 is slightly larger than the thickness L0 of the lever mounting portion 2a3 of FIG. 2, the amount of play that the lever mounting portion 2a3 moves in the blade rubber holding portion 3b2 of the blade rubber 2 is small. The angle of inclination of the lever mounting portion 2a3 with respect to the first lever yoke 3a is set to be much larger than that of the blade rubber holding portion 3a2 which is flat.

On the other hand, the blade lever 4 is provided with a shaft 4a3 in a notch 4a2 formed in a substantially central portion of the blade lever main body 4a, and the shaft 4a3 has a tip end side of the wiper arm 6 in the notch 4a2. Since the blade lever 4 is connected via the connecting member 7 shown in FIG. 2, the blade lever 4 rotates with respect to the wiper arm 6. Further, shaft support portions 4a1 and 4a1 are formed near both ends of the blade lever body 4a, and the shaft support portions 4a1 and 4a1 support the shafts 3a4 and 3a4 of the second lever yoke 3a as described above. Each is supported rotatably.

The vehicle wiper blade 1 having such a structure is configured such that the wiper arm 6 is connected to the shaft 4 a 3 in the notch 4 a 2 of the blade lever 4 via the connecting member 7 with the tip end side of the wiper arm 6. When the wiper motor is oscillated reciprocally on the wiping surface by the rotational power of the wiper motor, the blade lever 4, the lever yoke 3, and the blade rubber 2 are pressed toward the wiping surface by the arm spring built in the wiper arm 6, so that the blade rubber 2 The lip 2b comes into sliding contact with the wiping surface to wipe the wiping surface.

At this time, even if the frictional force between the lip 2b and the wiping surface becomes large due to the small amount of raindrops attached to the wiping surface, it is provided on the blade rubber holding portion 3a2 of the first lever yoke 3a. The rattling reduction / inclination angle allowance guides 3a11, 3a12, 3a12 and the blade rubber holding portions 3b2, 3b2 of the second lever yoke 3b are provided for rattling reduction / inclination angle allowance guides. 3b6, 3b7, 3b7 and 3b6, 3b7, 3b7 perform wiping operation in a state in which rattling between the lever yoke 3 and the blade rubber main body 2a of the blade rubber 2 is reduced, resulting in a large bending rate. It is assumed that the wiping operation is performed with a large inclination angle of the blade rubber 2 relative to the wiping surface with respect to the lever yoke 3. Become.

[0024]

[Effect of device]

 As described above, the vehicle wiper blade according to the present invention has the above-described configuration. Therefore, the blade wiper blade provided on the blade rubber holding portion of the lever yoke is provided with the guide for reducing rattling and permitting inclination angle. The rattling between the blade rubber of the rubber and the main body is reduced, and the rattling of the blade rubber against the lever yoke is also reduced.When there are few raindrops adhering to the wiping surface, the blade rubber and the wiping surface are Even if the frictional force between them becomes large, the blade rubber does not dance in the blade rubber holding part, and a large inclination angle of the blade rubber with respect to the lever yoke in the longitudinal direction is allowed, so the blade rubber has a curved wiping surface. Limit of the angle of inclination of the blade rubber with respect to the lever yoke during elastic deformation corresponding to Even if there are few raindrops adhering to the wiping surface, the blade rubber follows the wiping surface without dancing in the blade rubber holding part and can perform smooth wiping. .

[Brief description of drawings]

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

FIG. 2 is a plan view of the vehicle wiper blade shown in FIG.

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

4 is a side view showing an assembling relationship between a blade lever and a lever yoke of the vehicle wiper blade shown in FIG. 1. FIG.

5 is a vertical cross-sectional view of the vehicle wiper blade shown in FIG.

[Explanation of symbols]

1 Vehicle Wiper Blade 2 Blade Rubber 2a Blade Rubber Main Body 3 Lever Yoke 3a2, 3b2, 3b2 Blade Rubber Holding Part 3a11, 3a12, 3a12, 3b6, 3b6, 3b
7, 3b7, 3b7, 3b7 Guide for reducing rattling and permitting tilt angle 4 Blade lever

Continuation of the front page (72) Yutaka Murata Hoho 1760 Higashimatano-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture Automotive Electric Industry Co., Ltd. Industry Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A blade rubber main body having an elongated shape, a blade rubber integrally having a lip pressed against a wiping surface, and a blade rubber main body of the blade rubber which is movable in the length direction of the blade rubber. A vehicle wiper blade comprising a resin lever yoke having a blade rubber holding portion and a resin blade lever connected to the wiper arm side and rotatably attached to the wiper arm side. The rubber retainer also reduces rattling between the blade rubber body of the blade rubber and the lever yoke, and reduces rattling to allow a large angle of inclination of the blade rubber with respect to the lever yoke in the longitudinal direction. A wiper blur for a vehicle, characterized by being provided with a guide for allowing an inclination angle. Mode. 2. The vehicle according to claim 1, wherein the rattling reduction / inclination angle allowance guide is formed as a small projection projecting toward the blade rubber main body side of the blade rubber in the blade rubber holding portion. Wiper blade for.