JPH0669033U - Vehicle wiper arm blade - Google Patents

Abstract

(57) [Abstract] [Purpose] The wiper blade for vehicles can be removed very easily, the metal parts are less likely to be rusted, and mud and dust can be prevented from entering the rotating parts.・ Provide blades. A wiper arm blade 1 for a vehicle, in which a blade cover 4 is provided with a connecting clip releasing elastic portion 4c2 for releasing the locking of the connecting clip to the arm piece 3b by pressing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle wiper arm blade used to wipe a wiping surface such as a windshield glass.

[0002]

[Prior art]

 Conventionally, as a vehicle wiper arm blade for wiping a wiped surface such as a windshield glass, those specified in JIS Handbook Automobile JIS D5710 Automobile Wiper Blades and Wiper Arms are known.

In the above vehicle wiper arm blade, the wiper blade is provided with a blade rubber and a blade lever rotatably connected to a lever yoke to which the blade rubber is attached. A wiper blade attachment portion of an arm piece provided on the wiper arm is rotatably attached to a central portion of the blade lever via a connection clip for connecting the wiper arm.

The arm piece has a base end side fixed to one end side of the retainer, and a tip side wiper blade attachment portion engages with an elastic piece of the connecting clip. On the other end of the retainer, the other end of the arm head, which has a pivot shaft attachment part on one end, is rotatably pivoted, and an arm spring that sets the arm pressure for pressing the wiper blade against the wiping surface side. Is locked between the retainer side and the arm head side.

When the pivot shaft mounting portion of the arm head is fixed to the pivot shaft on the vehicle body side, the retainer presses the blade rubber of the wiper blade against the wiping surface by the arm pressure set by the arm spring.

When the pivot shaft is reciprocally rotated by the power from the wiper motor, the wiper arm reciprocally swings on the wiping surface, so that the wiping blade is pressed against the wiping surface to wipe the wiping surface.

Here, when removing the wiper blade from the wiper arm, a finger is inserted between the blade lever and the blade rubber to press the elastic piece of the connecting clip to the side opposite to the wiping surface, and the elastic piece is elastically moved. The deformation causes the connecting clip to disengage from the armpiece, thereby disengaging the wiper blade from the wiper arm.

[0008]

[Problems to be solved by the device]

 In the conventional vehicle wiper arm blade described above, the elastic piece of the connecting clip engages with the arm piece by inserting the finger between the blade lever and the blade rubber and pressing it against the side opposite to the wiping surface. Since it is a structure that releases the wiper blade, it is difficult to insert a finger or the like into the relatively narrow gap between the blade lever and the blade rubber and press the elastic piece of the connecting clip, which results in the wiper blade. There was a problem that it was not easy to replace. Also, since the wiper blade and the wiper arm are exposed to the outside of the vehicle body when mounted on the vehicle body, rainwater and mud are likely to be directly splashed on the surface, and the lever yoke made of metal due to the rainwater splashed on the surface. ， The blade lever, arm piece, retainer and arm head may get rusted, and if mud or dust is caught in the rotating part, the rotating parts will be slid to wear, which causes wear. There is a problem that it may cause abnormal noise such as rattling, and it has been an issue to solve these problems.

[0009]

[The purpose of the device]

 The wiper arm blade for a vehicle according to the present invention makes it extremely easy to remove the wiper blade, does not easily cause rust on the metal part, and prevents dirt and dust from entering the rotating part. The purpose is to provide a wiper arm blade for a vehicle that can be used.

[0010]

[Constitution of device]

[0011]

[Means for Solving the Problems]

 The vehicle wiper arm blade according to the present invention is characterized in that the blade cover is provided with the elastic portion for releasing the connecting clip for releasing the engagement of the connecting clip with the arm piece by pressing. In the embodiment adopted according to the above, the connecting clip is provided with an elastic piece that elastically engages with the arm piece of the wiper arm, and the connecting clip releasing elastic portion substantially forms a part of the blade cover by approximately U. The elastic piece of the connecting clip, which is formed inside the notch cut in the shape of a letter, is pressed and deformed toward the release side with the arm piece.

[0012]

[Function of the device]

 In the vehicle wiper arm blade according to the present invention, the engagement of the connecting clip with the arm piece is released by the elastic portion for releasing the connecting clip provided on the blade cover that covers the outside of the wiper blade. Therefore, it is not necessary to release the connecting clip by inserting a finger or the like into the gap between the blade lever and the blade rubber. Further, since the wiper blade is covered with the blade cover on the outside and the wiper arm is covered with the arm cover on the outside, rainwater or mud is unlikely to be directly splashed on the wiper blade and the wiper arm.

[0013]

【Example】

 1 to 6 show an embodiment of a vehicle wiper arm blade according to the present invention. FIG. 1 is a front view, FIG. 2 is a vertical side view, FIG. 3 is a rear view, and FIG. 4 is a wiper blade. Is a vertical sectional side view of a connecting portion between the wiper arm and the wiper arm, FIG. 5 is a cutaway front view of the connecting portion between the wiper blade and the wiper arm, and FIG. 6 is an external view of the state of being attached to the 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 shown in FIG. 2, the wiper blade 2 has a blade rubber 2a made of rubber and having an elongated shape, which is held by four lever yokes 2b along the length direction. , Two points from both ends are rotatably connected to the primary blade lever 2d via the secondary blade lever 2c. As shown in FIGS. 4 and 5, the central portion of the primary blade lever 2d becomes a wiper arm mounting portion 2d4 in which a connecting clip mounting shaft 2d3 is arranged in a space portion 2d2 formed between the side plates 2d1 and 2d1. The connection clip 2e is attached to the wiper arm mounting portion 2d4. The lever yoke 2b, the secondary blade lever 2c, and the primary blade lever 2d are all made of metal.

As shown in FIGS. 4 and 5, the connecting clip 2e is formed of a resin having a substantially H-shaped cross section and having some elasticity. The connecting clip 2e has side plates 2e2 and 2e2 formed on both sides of the clip body 2e1 located in the central portion, the side plates 2e2 and 2e2 having outer dimensions slightly smaller than the width dimension of the space 2d2 of the primary blade lever 2d. It is provided. Further, the clip body 2 e 1 has a groove-like shaft fitting portion having an inner diameter slightly larger than the outer diameter of the connecting clip mounting shaft 2 d 3 of the primary blade lever 2 d and along the axial direction of the connecting clip mounting shaft 2 d 3. 2e3 is provided, and a part of the shaft fitting portion 2e3 serves as a retaining portion 2e4 cut along the groove direction of the shaft fitting portion 2e3 with an opening size slightly smaller than the inner diameter dimension of the shaft fitting part 2e3. ing. Then, elastic pieces 2e5, 2e5 formed along the length direction of the clip body 2e1 as a tongue shape are provided at positions close to the shaft fitting portion 2e3 of the clip body 2e1. Of the elastic pieces 2e5 and 2e5, one side of the elastic piece 2e5 on the left side in FIG. 4, which is the side opposite to the blade rubber 2a, has a small central portion toward the side opposite to the blade rubber 2a. A wiper arm locking projection 2e6 that projects in a protruding shape is provided, and a locking release projection 2e7 that also projects in a crank shape toward the side opposite to the blade rubber 2a is provided near the tip. ing.

Here, in the connecting clip 2e, the side plates 2e2 and 2e2 are inserted into the space 2d2 along both side plates 2d1 and 2d1 of the wiper arm mounting portion 2d3, and the shaft fitting portion 2e3 is inserted via the retaining portion 2e4. Is attached to the connecting clip attaching shaft 2d2 of the primary blade lever 2d, so that the connecting clip attaching shaft 2d2 is pivotally supported by the connecting blade attaching shaft 2d2 in the circumferential direction of the connecting clip attaching shaft 2d2 with respect to the primary blade lever 2d.

An arm piece 3b included in the wiper arm 3 is attached to the outside of the clip body 2e1 of the connecting clip 2e.

The wiper arm 3 includes an arm head 3a, an arm piece 3b, a retainer 3c, an arm spring 3d, and a connecting hook 3e.

A round hole-shaped pivot shaft mounting portion 3a1 is provided on one end side of the arm head 3a, and the other end side of the arm head 3a has a substantially crank-shaped arm piece 3b on one end side. The other end of the retainer 3c to which the base end is attached is rotatably connected via a connecting pin 3a2.

As shown in FIG. 3, a hook groove 3a3 formed from the other end toward one end is provided near the other end of the arm head 3a. The hook groove 3a3 is provided in the hook groove 3a3. One end of the connecting hook 3e is rotatably locked to the locking pin (not shown). The other end of the connecting hook 3e is rotatably locked to one end of the arm spring 3d.

The retainer 3c has an arm spring 3d arranged in an arm spring accommodating portion 3c1 having a U-shaped cross section, and one end of the arm piece 3b having the other end attached to one end of the retainer 3c is , A wiper blade that is slightly larger than the outer shape of the clip body 2e1 of the connecting clip 2e and is bent in a U shape toward the left side in FIG. 4, which is the side opposite to the blade rubber 2a of the wiper blade 2. It is a mounting portion 3b1. The wiper blade mounting portion 3b1 is provided with a clip locking hole 3b2 formed in the arm piece 3b in the shape of a square hole. The clip locking hole 3b2 corresponds to the wiper arm locking projection 2e6 provided on the connecting clip 2e.

Here, the arm piece 3b is inserted into the space 2d2 of the primary blade lever 2d provided on the wiper blade 2 on the tip side thereof, and then, inside the U-shaped portion of the wiper blade mounting portion 3b1. By inserting the clip body 2e1 of the connecting clip 2e, the clip locking hole 3b2 is attached to the wiper blade 2 in a state of being locked to the wiper arm of the connecting clip 2e by the elastic protrusions 2e5 and 2e5 of the elastic protrusions 2e5 and 2e5. To be In this state, when the locking releasing projection 2e7 of the connecting clip 2e is pressed rightward in FIG. 4 against the elastic reaction force of the elastic piece 2e5, the wiper arm locking projection of the connecting clip 2e is pressed. Since the portion 2e6 is disengaged from the clip engaging hole 3b2 of the arm piece 3b, the wiper blade 2 can be removed from the wiper arm.

Further, since the arm spring 3d is locked in an expanded state between the retainer 3c side and the arm head 3a side via the connecting hook 3c1, the arm spring 3d and the retainer 3b are centered around the rivet pin 3a 2. By urging 3c in the clockwise direction in FIG. 2, a tension for pressing the blade rubber 2a of the wiper blade 2 against the wiping surface W shown in FIG. 6 is applied, and the arm pressure is set by this tension. Be done. The arm piece 3b and the retainer 3c are biased in the clockwise direction in FIG. 2 by the tension of the arm spring 3d, but when wiping the wiping surface W by hand, the wiper blade 2, the arm piece 3b and the retainer 3c are removed. The lockback operation can be performed by pulling counterclockwise in FIG. 2 against the tension of the arm spring 3d. The arm piece 3b, the retainer 3c, the arm head 3a, the connecting pin 3a2, the connecting hook 3c1, and the arm sprinkle 3d are all made of metal.

On the other hand, a blade cover 4 is attached to the outside of the wiper blade. The blade cover 4 has an outer shape that is slightly larger than the outer dimension of the wiper blade 2 and is a resin having a slight elasticity as the cross-sectional shape covering the wiper blade 2 excluding the blade rubber 2a is U-shaped. It is integrally molded to be thin.

The blade cover 4 has an opening 4a on one side, and at the position corresponding to the primary blade lever 2d provided on the wiper blade 2 on the side of the opening 4a, a small protruding blade retainer 4b is symmetrically positioned. It is provided. Since the blade retainer 4b covers the opening 4a side of the blade cover 4 with the primary blade lever 2d of the wiper blade 2 first, and then contacts the primary blade lever 2d, the blade retainer 4b is locked to the primary blade lever 2d. The blade cover 4 is attached to the wiper blade 2 inseparably.

Further, as is clear from FIGS. 1, 4 and 5, in the substantially center of the upper plate 4c, which is opposite to the opening 4a of the blade cover 4, inside the notch 4c1 cut into a substantially U shape. An elastic portion 4c2 for releasing the connection clip is provided. As shown in FIG. 4, the elastic portion 4c2 for releasing the connecting clip has a tip 4c3, which is the lower side in the drawing, provided on the engaging release portion 2e7 provided on the connecting clip 2e of the wiper blade 2. When the tip 4c3 is located close to the release projection 2e7 and is pressed toward the wiper blade 2 from the outside of the blade cover 4, it abuts against one elastic piece 2e5 of the connecting clip 2e and the other elastic piece 2e5 is removed. Since it is elastically deformed, the wiper arm locking projection 2e6 of the connecting clip 2e is removed from the clip locking hole 3b2 of the arm piece 3b.

On the other hand, an arm cover 5 is attached to the outside of the wiper arm 3. The arm cover 5 includes a retainer cover 5a located on the outer side of the retainer 3c and the arm piece 3b provided on the wiper arm 3 on the base end side, an arm head cover 5b located on the outer side of the arm head 3a provided on the wiper arm 3, and a wiper arm. And a hinge cover 5c located outside the connecting portion between the retainer 3c and the arm head 3a.

The retainer cover 5a has an outer shape that is slightly larger than the outer dimension of the retainer 3c. The base end side covers the outer appearance of the portion near one end of the retainer 3c, and the middle is along the length direction of the retainer 3c and the tip end. It is assumed that the side is extended from the base end portion of the arm piece 3b along the length direction of the retainer 3c with substantially the same size as the blade cover 4, and is integrally molded in a thin U-shaped cross section with a resin. .

The retainer cover 5a has an opening 5a1 on one side, and the width dimension of the opening 5a1 is slightly larger than the width dimension of the retainer 3c.

Further, a small protrusion-shaped retainer retainer 5a2 is provided at a symmetrical position at a position corresponding to the retainer 3c on the side of the opening 5a1 of the retainer cover 5a, and the retainer retainer 5a2 has an opening 5a1 of the retainer cover 5a. After being attached to the outside of the retainer 3c, the retainer 3c is attached to the retainer 3c so as to be locked to the retainer 3c by being brought into contact with the retainer 3c.

On the base end side of the retainer cover 5a, there is provided a hinge cover mounting portion 5a3 which is opened at a portion near one end of the retainer 3c, and one end side of a hinge cover 5c described later is fixed to the hinge cover mounting portion 5a3. Has been done.

The arm head cover 5b has an outer shape that is slightly larger than the outer dimension of the arm head 3a, and covers the outside of the arm head 3a from the base end side to the tip end side along the length direction of the arm head 3a. As a matter of fact, the resin is molded into a thin U-shaped cross section.

The arm head cover 5b has an opening 5b1 on one side, and small projection-shaped arm head retainers 5b2 are provided at four symmetrical positions at positions corresponding to the arm head 3a on the opening 5b1 side. . Since the arm head retainer 5b2 covers the arm head 3a with the opening 5b1 of the arm head cover 5b and then locks the arm head 3a by contacting the arm head 3a, the arm head cover 5b is separated from the arm head 3a. It is impossible to install.

A hinge cover mounting portion 5b3 opened near the other end of the arm head 3a is provided on the tip end side of the arm head cover 5b. The hinge cover mounting portion 5b3 and the retainer cover 5a are provided. The hinge cover 5c is fixed to the hinge cover mounting portion 5a3.

The hinge cover 5c is integrally formed by flexible rubber to have a U-shaped cross-section in a thin shape, and has a movable portion 5c1 having a bellows shape.

The hinge cover 5c prevents the retainer 3c and the arm piece 3b from being urged in the clockwise direction in FIG. 2 by the tension of the arm spring 3d and the tension of the arm spring 3d. Then, when the lockback operation is performed in the counterclockwise direction in FIG. 2, the movable portion 5c1 expands and contracts following the retainer cover 5b that moves together with the retainer 3c and the arm piece 3c, so that the base end side of the retainer cover 5a is The space between the arm head cover 5b and the tip end side is always closed.

As shown in FIG. 6, the wiper arm blade 1 for a vehicle having such a structure has the pivot shaft mounting portion 3a1 provided on the arm head 3a of the wiper arm 3 fixed to a pivot shaft (not shown) on the vehicle body side. The blade rubber 2a of the wiper blade 2 is pressed against the wiping surface W by the arm pressure applied by the arm spring 3d.

Therefore, when the pivot shaft is reciprocally rotated by power from a wiper motor (not shown), the wiper arm 3 reciprocally swings on the wiping surface W, so that the wiper blade 2 presses the blade rubber 2 a against the wiping surface W. Wipe back and forth between the upper inverted position A and the lower inverted position B.

Here, 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 to perform the wiping operation in a state where it is not exposed to the outside.

When replacing the wiper blade 2 when the blade rubber 2a of the wiper blade 2 is worn, the tip 4e3 of the elastic portion 4c2 for releasing the connecting clip provided on the upper plate 4c of the blade cover 4 is replaced. When pressed with a finger or the like, one elastic piece 2e5 of the connecting clip 2e is elastically deformed to release the locked state between the clip locking hole 3b2 of the arm piece 3b and the wiper arm locking projection 2e6 of the connecting clip 2e. The wiper blade 2 and the blade cover 4 are detachable from the wiper arm 3.

[0042]

[Effect of device]

 As described above, since the vehicle wiper arm / blade according to the present invention has the above-described configuration, the blade cover of the blade cover can be inserted without inserting a finger or the like into the narrow gap between the blade lever and the blade rubber. Since the wiper blade can be removed by pressing it from above, replacement of the wiper blade is extremely easy, and since rainwater and mud are not directly applied to the wiper blade and wiper arm, the generation of rust and noise can be prevented. It has an excellent effect that it can withstand long-term use.

[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 right side view in vertical section 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 vertical cross-sectional side view of a connecting portion between the wiper blade and the wiper arm in the vehicle wiper arm blade shown in FIG.

5 is a cutaway front view of FIG. 4. FIG.

FIG. 6 is an external view of a state in which the vehicle wiper arm blade shown in FIG. 1 is attached to a vehicle body.

[Explanation of symbols]

 1 Wiper Arm Blade for Vehicle 2 Wiper Blade 2a Blade Rubber 2d4 Wiper Arm Attachment 2e Connection Clip 3 Wiper Arm 3a Arm Head 3a1 Pivot Shaft Attachment 3b Arm Piece 3b1 Wiper Blade Attachment 3c Retainer 3d Arm Spring 4 Blade Cover 4c2 Connection Clip Release Clip Elastic part 5 Arm cover W Wipe surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuya Fukuya 1760, Higashimatano-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture

Claims (2)

[Scope of utility model registration request] 1. A wiper blade holding a blade rubber for wiping a wiping surface and having a connecting clip rotatably attached to a wiper arm mounting portion, and the other end side of an arm head having a pivot shaft mounting portion on one end side. And the other end side of the retainer, which is provided with an arm piece to which the connecting clip is detachably locked at a wiper blade mounting portion at one end side, is rotatably pivotally connected to the arm head side and the retainer side. A wiper arm provided with an arm spring that applies tension to press the wiper blade between the wiper surface side, a blade cover that covers the outside of the wiper blade, and an arm cover that covers the outside of the wiper arm, and the blade cover. , The elastic part for releasing the connecting clip that releases the locking of the connecting clip to the arm piece by pressing For a vehicle, characterized in that only the wiper arm,
blade. 2. The connecting clip is provided with an elastic piece that elastically engages with the arm piece of the wiper arm, and the connecting clip releasing elastic portion is a notch formed by cutting a part of the blade cover into a substantially U shape. The wiper arm blade for a vehicle according to claim 1, wherein the wiper arm blade for a vehicle is formed on the inner side of the vehicle and is deformed by pressing the elastic piece of the connecting clip to the side of releasing the connecting piece from the arm piece.