JPH0675931U - Wiper blade connector - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents deterioration of the connecting function due to aging of the connecting tool used in the wiper arm whose tip is bent in a substantially U shape and whose bent portion is used as the connecting section. To do. [Structure] A connector having a U-shaped cross section and having guide walls provided on both sides is rotatably disposed between substantially central side walls of a yoke having a U-shaped cross section.
The holder, which has a pressing plate having a function of pressing the connecting portion of the wiper arm in addition to the holder locking function, is rotatably arranged so as to face the character-shaped outer surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a connector for rotatably connecting a wiper blade to a wiper arm of a type in which a tip is bent in a substantially U shape and a bent portion is a wiper blade connecting part.

[0002]

[Prior art]

 FIG. 1 shows an overall view of a wiper blade 3 connected to a conventional wiper arm 1. As is well known, the wiper blade 3 has a ribbon holder 7 that holds a rubber ribbon 5 made of rubber that slides in contact with the front windshield surface of the vehicle. The ribbon holder 7 is held by the tip of the auxiliary stay 9. Further, the stay 9 is connected at the tip of the main stay 11. The tip of the wiper arm 1 is connected to the central portion of the wiper blade 3 via a connecting tool 13.

The connecting tool 13 has a function of accurately transmitting the force from the wiper arm 1 to the wiper blade 3. Further, the connector must be constructed so that the wiper blade 3 can be easily attached to and detached from the wiper arm 1 and that the wiper arm 1 and the wiper blade 3 can be reliably separated from each other when in use. A connector for rotatably connecting a wiper blade to a wiper arm of a type in which the tip is bent in a substantially U shape and the bent portion is connected to a wiper blade, and a connector 13 satisfying such requirements is provided. The applicant has already applied. This connector 13 is shown in FIG.

That is, the connecting device already filed by the applicant of the present application has both side walls 15 along the longitudinal direction at the central portion of the main stay 11 of the wiper blade 3 as shown in FIG. The connector 19 and the holder 25 are rotatably mounted between 15 parts. The connector 19 has a substantially U-shaped cross section in the longitudinal direction. On the other hand, the wiper arm 1 has its tip bent into a substantially U shape, and the bent portion is formed as a connecting portion 21 into which the connector 19 is fitted. A holder 25 having a function of pressing the outer surface of the connecting portion 21 of the wiper arm 1 in which the connector 19 is fitted is provided between the two side walls 15 of the yoke 17 of the connecting tool 13 so as to face the connector 19. . This pressed state is maintained by the lever 27 having a spring property formed on the holder 25 being locked in the locking groove 29 formed on the side wall 15 of the yoke 17 of the connector 13. A locking projection 31 is provided in the locking groove 29, and the lever 27 rides over the locking projection 31 and is located at the bottom of the locking groove 29, so that the wiper arm 1 and the wiper blade 3 are separated from each other. Surely prevent. Further, the lever 27 is bent so that the lever 27 is disengaged from the locking groove 29 so that the wiper blade 3 can be easily attached and detached.

[0005]

[Problems to be solved by the device]

 However, the holder of the conventional coupling tool previously filed by the applicant of the present invention is not able to be pressed by the holder 25 that presses the substantially U-shaped connecting portion 21 of the wiper arm 1 in which the connector 19 is fitted due to aging. An incomplete state may occur, and if the pressing is incomplete, there is a risk of rattling between the wiper arm 1 and the wiper blade 3. When the backlash occurs, a noise is generated when the wiper blade 1 is rotated to wipe the front windshield with the wiper blade 3, or the wiper blade 3 cannot sufficiently perform the function of wiping the front windshield.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a connector that does not cause play between the wiper arm and the wiper blade.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has a side wall formed by gradually widening from the base portion of the ceiling plate to the front side toward the front end portion on both sides, and has a downward U-shaped cross section. A side wall with a U-shaped notch facing the inside of the side wall at the leading edge of one side wall, and a U-shaped notch formed on the side wall from the leading edge of the other side wall. The lever of the length facing the opening of the U-shaped notch and protruding from the opening of the U-shaped notch is fixed, and the base of the holder on which the pressing plate is suspended and fixed at the tip of the ceiling plate is rotated to the base of the yoke. A connector that is rotatably arranged by a shaft, has guide walls on both sides, and has a U-shaped cross section in the longitudinal direction, is provided with a rounded surface of the connector from the pressing plate of the holder to the connecting portion of the wiper arm. It has a special feature that it is pivotally attached so that it can be freely rotated at a position where only the thickness is changed. A connector of the wiper blade to be.

[0008]

[Action]

 A wiper arm of a type in which the tip is bent in a substantially U shape and the bent portion is a connecting portion, and a wiper blade is attached to the wiper arm, and a connector arranged on a yoke constituting the connecting tool is fitted to the wiper arm. The holder that presses the connecting part of the arm is made to fully demonstrate the pressing function of the pressing plate, and the pressing force of the connecting tool is prevented from decreasing due to aging, etc., preventing rattling between the wiper arm and the wiper blade. To do.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The wiper arm 1 to which the present invention is applied is a connecting portion with a connecting tool 13 in which the tip of the wiper arm 1 is bent in a substantially U shape, and the substantially U-shaped bent portion is fixed to a wiper blade. A wiper arm 1 of the type formed as 21 (FIG. 4). The connector 13 is fixed to the central portion of the main stay 11 of the wiper blade 3 in the longitudinal direction.

A yoke 17 which is a constituent material of the connecting tool 13 is formed in a U-shaped cross section, and a pin 33 is inserted into both side walls 15 at a substantially central portion thereof, and the connector 19 is connected by the pin 33. It is rotatably provided. The connector 19 has guide walls on both sides, and a cross section around the pin 33, that is, a cross section 35 in the longitudinal direction of the connector is substantially U-shaped. With respect to the connector 19 having the substantially U-shaped cross section 35, the connecting portion 21 of the wiper arm 1 bent into a substantially U shape is fitted between the guide walls on both sides of the connector 19 so as to be hooked. The inner surface of the connecting portion 21 which is formed by bending a substantially U-shape is received by the outer surface of the substantially U-shaped cross section 35 of the connector 19. In this received state, the tip of the wiper arm 1 can rotate around the pin 33 together with the connector 19.

A holder 25 is rotatably provided on both side walls 15 of a yoke 17 which is a constituent material of the connecting tool 13 around another rotation center arranged at an end of the yoke 17. That is, a hole 23 is formed in both side walls 15 at the left end of the yoke 17 which is a constituent material of the connector 13 in FIG. 4, and projections formed on both side surfaces of the base of the holder 25 are fitted into the hole 23. ing . A pressing plate 39 is formed downward at the tip of the ceiling plate of the holder 25. The pressing plate 39 has a tongue shape protruding downward from the tip of the ceiling plate of the holder 25 and has elasticity like a plate spring. Further, it has an arcuate curved surface suitable for pressing the connecting portion 21 which is a substantially U-shaped bent portion of the wiper arm 1 from the outside toward the pin 33 of the connector 19 (FIG. 5). . The arcuate tip has a gentle step.

Further, as shown in FIG. 5, the holder 25 has sidewalls 15 formed on both sides of the ceiling plate from the base of the ceiling plate to the front of the pressing plate 39 arranged at the front end, which are gradually widened toward the front end. The side wall 15 on one side is provided with a U-shaped cutout engaging groove 29 facing the inside of the side wall 15 at the leading edge of the side wall 15 on the one side. From the rising side, the lever 27 has a length that extends toward the opening of the U-shaped cutout locking groove formed on the one side wall and that projects across the locking groove 29 that is a U-shaped cutout. Is projected. The lever 27 has a spring property. On the inner circumference of the locking groove 29, a locking projection 31 for the lever 27 to ride over is formed. Further, a stopper 45 for locking the holder 25 at a predetermined rotation position is provided on the front surface of the ceiling plate of the holder 25. A recess 47 into which the stopper 45 is fitted is formed at the upper edge of both side walls 15 of the yoke 17 that constitutes the connector 13. The operation of this embodiment will be described below.

In order to connect the wiper arm 1 to the wiper blade 3 to which the connecting tool 13 having the above-mentioned structure is fixed, the holder 25 arranged on the connecting tool 13 is rotated and raised, and the longitudinal cross section is substantially the same. The rounded outer surface of the U-shaped connector 19 is exposed, and the connecting portion 21 that is a substantially U-shaped bent portion of the wiper arm 1 is engaged and fitted to the exposed portion. As a result, the inner surface of the connecting portion 21 of the wiper arm 1 is received in close contact with the rounded outer surface of the connector 19. Then, the holder 25 is rotated in the direction to return it to the original position. Then, the lever 27 formed on one of the side walls arranged on both sides of the ceiling plate of the holder 25 comes into contact with the locking projection 31 of the locking groove 29 formed on the other side wall, so that the holder 25 is further strongly pressed to rotate. Then, the lever 27 bends due to its own spring property and gets over the locking projection 31. As a result, the lever 27 is positioned at the bottom of the locking groove 29 and completely locked. At this time, the pressing plate 39 formed at the tip of the ceiling plate of the holder 25 strongly presses the connecting portion 21, which is a substantially U-shaped bent portion of the wiper arm 1, from the outside toward the connector 19 side. Moreover, due to the nature of the pressing plate 39 as a leaf spring, this pressing is performed elastically.

Therefore, in the connecting device of the prior art, the lever arranged on the side wall of the holder 25 directly abuts the connecting portion of the wiper arm and presses the connecting portion of the wiper arm. Even if the pressing force is attenuated by the action and the gap is generated, the connector of the present invention causes the lever 27 to directly press the wiper arm 1 by the action of the holder 25 leaf spring-like pressing plate 39. The plate 39 is protected without coming into contact with it and the cause of this backlash is eliminated. Therefore, even if the wiper arm 1 is rotated in this state and the windshield of the vehicle is wiped by the wiper blade 3, no sound caused by the backlash is generated, and the wiper blade 3 is caused by the backlash. It is possible to avoid the situation where it becomes difficult to exert the function.

When removing the wiper blade 3 from the wiper arm 1, if the lever 27 is pushed rightward in FIG. 3 with a fingertip, the lever 27 flexes and the locking projection 31 is passed over in the opposite direction and the locking groove 29. Get out of. Therefore, the holder 25 can be raised and the connecting portion 21, which is a substantially U-shaped folded portion of the wiper arm 1, can be easily removed from the substantially U-shaped outer surface 35 of the connector 19.

Furthermore, according to the connecting device of this embodiment, the wiper blade 3 can be easily attached to and detached from the wiper arm 1 by the action of the lever 27 having a spring property. In addition, the lever 27 can pass over the locking projection 31 and can be locked in the locking groove 29 reliably, and the stepped portion 41 at the tip of the pressing plate 39 can be pressed with a moderation to bring it into a once pressed state. Then, since it is difficult to return to the original state, it is possible to more completely prevent the wiper blade 3 from separating from the wiper arm 1.

[0017]

[Effect of device]

 As described above, according to the connector for a vehicle wiper blade of the present invention, the leaf spring-like pressing plate formed at the tip of the holder presses the connecting portion which is the substantially U-shaped bent portion of the wiper arm. By doing so, the pressing plate absorbs the play that may occur between the holder and the wiper arm, and in reality, the play can be eliminated. As a result, it is possible to prevent a noise from being generated and the function of the wiper blade not being fully exerted when the windshield glass of the vehicle is wiped with the wiper blade by rotating the wiper arm.

[Brief description of drawings]

FIG. 1 is an overall view showing a wiper blade connected to a wiper arm showing a conventional example.

FIG. 2 is a perspective view showing the coupling device of FIG.

FIG. 3 is an overall perspective view showing an embodiment of the present invention.

FIG. 4 is a perspective view of a connector.

5 is a perspective view of the holder of FIG.

[Explanation of symbols]

 1 Wiper Arm 3 Wiper Blade 13 Connector 15 Side Wall 17 Yoke 19 Connector 21 Wiper Arm Connection 25 Holder 27 Lever 29 Locking Groove 31 Locking Protrusion 35 Connector U-Shaped External Surface 39 Pressing Plate 45 Stopper

Claims (1)

[Scope of utility model registration request] 1. A side wall formed by sequentially widening from the base portion of the ceiling plate to the front side of the ceiling toward the tip portion is arranged on both sides to form a downward U-shaped cross section, and the tip of one side wall is formed. A U-shaped notch facing the inside of the side wall is provided on the rising side,
From the rising edge of the tip of the other side wall, a lever having a length facing the opening of the U-shaped notch formed in the one side wall and protruding from the opening of the U-shaped notch is fixed, and the tip of the ceiling board is fixed. In the above, the base of the holder to which the pressing plate is hung and fixed is rotatably arranged on the base of the yoke by a rotary shaft, guide walls are provided on both sides, and the longitudinal cross section is formed in a U shape. A connector for a wiper blade, wherein a connector is pivotally mounted so that a rounded surface of the connector is rotatable from a pressing plate of a holder by a thickness of a connecting portion of a wiper arm.