JPH0542018U - Vehicle wiper device - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to prevent the wiper blade from being lifted up without hindering the driver's view and without requiring a plurality of types of arm heads even when the vehicle type is different. [Arrangement] The arm head includes a first arm head 7 and a second arm head.
Since the second arm head 8 is divided into the arm head 8 and the second arm head 8 can be twisted and held with respect to the first arm head 7 by an arbitrary angle, the mounting angle of the pivot shaft 1 to the vehicle can be increased. The retainer 3 without removing the wiper
The wiper blade can be prevented from floating because it can be rotatably supported in the component direction of the lifting force (vertical direction of the wiping surface).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wiper device, and more particularly to a device for preventing the wiper blade from rising when traveling at high speed.

[0002]

[Prior Art]

 Generally, in a vehicle wiper device, an arm head 2 is fixed to a pivot shaft 1 as shown in FIG. 8, and a retainer 3 is rotatably supported on the arm head 2.

A wiper blade 5 is attached to the tip side of the retainer 3 via an arm piece 4, and the wiper blade 5 is pressed against the wiping surface by the urging force of a spring. There is.

However, during the operation of the wiper during high-speed traveling, there is a problem that the wiper blade 5 is easily blown by the wind and the wiper blade 5 cannot be sufficiently wiped.

In order to solve this, conventionally, there is a method in which fins are attached to a wiper arm or a wiper blade to increase the pressing force by using wind pressure.

Further, as disclosed in Japanese Utility Model Laid-Open No. 61-85556, a predetermined angle is formed between the rising direction of the wiper blade and the rotating direction of the retainer, that is, the axis line of the pivot shaft. On the other hand, the axis of the support shaft, which rotatably supports the retainer on the arm head, is twisted at a specified angle, and the lift force of the wiper blade (the force perpendicular to the wiping surface) is adjusted in the direction of the component force. There is one in which a retainer is pivotally supported on an arm head so as to rotate.

[0007]

[Problems to be solved by the device]

 However, in the above-mentioned wiper arm or wiper blade equipped with fins, the fins rotate together with the wiper blades, which hinders the driver's view and is disclosed in Japanese Utility Model Laid-Open No. 61-85556. Since the wiper device is an arm head with its tip twisted by a predetermined angle, the twisting angle differs depending on the vehicle model, and multiple arm heads must be prepared to handle this. There was a problem that it had to be.

The present invention provides a wiper device for a vehicle that does not obstruct the driver's field of view and that can prevent the wiper from being lifted up even when the vehicle type is different, without requiring a plurality of types of arm heads. To aim.

[0009]

[Means for Solving the Problems]

 According to the present invention, a retainer is rotatably supported on an arm head fixed to a pivot shaft, and a wiper blade is attached via an arm piece fixed to the retainer. A wiper device for a wear vehicle, wherein the arm head comprises a first arm head fixed to the pivot shaft and a second arm head rotatably supporting the retainer. And a twist angle adjusting means for holding the second arm head in a twisted state at an arbitrary angle with respect to the first arm head.

[0010]

[Action]

 In the vehicle wiper device having the above structure, the arm head is divided into the first arm head and the second arm head, and the second arm head is twisted by an arbitrary angle with respect to the first arm head. Since it can be held, the retainer can be pivoted in the component direction of the wiper blade lifting force (the direction perpendicular to the wiping surface) without affecting the mounting angle of the pivot shaft to the vehicle. The wiper blade can be prevented from rising.

[0011]

[Effect of the device]

 As described above, the vehicle wiper device of the present invention has an effect of preventing the wiper from being lifted up without disturbing the driver's field of view and without requiring a plurality of types of arm heads even when the vehicle type is different. ..

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. Note that, in the embodiments, similar configurations will be described with the same reference numerals.

FIGS. 1 and 2 show a first embodiment of a vehicle wiper device of the present invention. FIG. 1 is an overall perspective view of a main part of the vehicle wiper device, and FIG. 2 is a diagram showing the first embodiment. It is a front view of a main part.

In the embodiment of the vehicular wiper device of the present invention, the arm piece 4 and the wiper blade 5 have the same constructions as the conventional ones, and the explanation thereof will be omitted.

The tapered surface of the tip end of the pivot shaft 1 is knurled, and a male screw is formed at the tip. The inner peripheral surface of the shaft hole 12 of the first arm head 7 comes into contact with this taper surface to prevent rotation. Further, the male screw of the pivot shaft 1 projects from the shaft hole 12, and the first arm head 7 is fastened and fixed to the pivot shaft 1 by the nut 6.

A cylindrical connecting protrusion 14 is integrally formed on the first arm head 7, and a connecting hole 16 is formed in the connecting protrusion 14. Further, one of the pipe-shaped connecting members 9 is fitted on the outer periphery of the connecting protrusion 14 and fixed to the connecting protrusion 14 by the rivet 11 via the connecting hole 16.

Further, the other side of the connecting member 9 is fitted with a cylindrical connecting protrusion 15 integrally formed with the second arm head, and is connected via a connecting hole 17 formed in the connecting protrusion 15 to the rear. It is fixed by the bed 11. At this time, the connecting hole 17 is formed at a position where the second arm head 8 and the retainer 3 are twisted at an arbitrary angle with respect to the first arm head 7.

A retainer 3 is rotatably supported by a support shaft 10 on the second arm head 8, one end of a spring 25 is fixed to the retainer 3, and the other end is a hook 26. It is fixed to the second arm head 8 via a spring, and a predetermined arm pressure is applied by the biasing force of the spring 25.

Next, the operation of the first embodiment will be described with reference to FIGS. 6 and 7. Since the first arm head 7 is fastened and fixed to the pivot shaft 1, the first arm head 7 moves on a rotation plane about the axis of the pivot shaft 1. However, since the second arm head 8 holds the first arm head 7 at an arbitrary angle (for example, the angle θ in FIG. 6) with respect to the first arm head 7, the upper surface 30 of the retainer 3 is held. Will be inclined with respect to the above rotation plane.

Therefore, when the wind pressure is generated in the direction of the arrow X due to the vehicle traveling, the upper surface 30 of the retainer 3 receives this wind pressure as shown in FIG. 6, and the retainer 3 receives the component force thereof. The wiper blade 5 can be prevented from being lifted up by acting in the direction of applying the rubber pressure.

Further, since the arm head is divided into the first and second arm heads 7 and 8, the rivet 1 for fixing the connecting projection 15 and the connecting member 9 of the second arm head 8 to each other. The second arm head 8 can be twisted by an arbitrary angle with respect to the first arm head 7 simply by changing the connecting position of No. 1, and different twist angles can be easily changed depending on the vehicle type. can do.

Further, in the above-described embodiment, the wiper blade can be prevented from being lifted up without attaching another component such as a fin, so that the driver's view is not obstructed.

FIG. 3 shows a second embodiment of the present invention, in which the connecting protrusion 15 of the second arm head in the first embodiment is omitted, and the connecting member 9 and the first arm head 7 are connected. It is fastened and fixed by screws 18. As a result, not only can the twist angle be changed depending on the type of vehicle, but also the twist angle can be appropriately adjusted due to an assembly error during assembly.

In addition, in FIG. 4, the outer peripheral shape of the connecting projection 19 and the inner peripheral shape of the connecting member 9 of the second embodiment are polygonal, and the second arm relative to the first arm head 7 is arranged at a predetermined angle. The twist angle of the head can be adjusted.

Further, as shown in FIG. 5, the intermediate portion of the connecting member 9 in the first embodiment is modified to form a bent portion 21 to obtain a predetermined wiping pattern or to avoid surrounding structures. You can also do it.

[Brief description of drawings]

FIG. 1 is an overall perspective view of essential parts showing a first embodiment of a vehicle wiper device of the present invention.

FIG. 2 is a front view of a main portion of the vehicle wiper device according to the first embodiment.

FIG. 3 is a front view of a main part of a second embodiment of a vehicle wiper device according to the present invention.

FIG. 4 is an explanatory diagram showing a modified example of a cross section taken along the line HH in FIG.

FIG. 5 is a main part plan view showing a modified example of the vehicle wiper device of the first embodiment.

FIG. 6 is a view on arrow A in FIG.

7 is a view from the direction of the arrow A in which the tilt direction of the retainer in FIG. 1 is changed.

FIG. 8 is an overall perspective view showing a conventional vehicle wiper device.

[Explanation of symbols]

 1 Pivot Shaft 2 Arm Head 3 Retainer 4 Arm Pace 5 Wiper Blade 7 First Arm Head 8 Second Arm Head 9 Connecting Member 11 Rivet 13 Connecting Holes 14, 15, 19 Connecting Protrusions 16, 17, 20 Connecting hole 18 Screw 30 Retainer upper surface

Claims (1)

[Scope of utility model registration request] 1. A retainer is rotatably supported by an arm head fixed to a pivot shaft, and a wiper blade is attached to the arm head via an arm piece fixed to the retainer. A vehicle wiper device, wherein the arm head is a first wiper device fixed to the pivot shaft.
Arm head, a second arm head that rotatably supports the retainer, and the second arm head is twisted at an arbitrary angle with respect to the first arm head. A vehicle wiper device comprising: a twisting angle adjusting means for holding the twisted state.