JP2582065B2 - Vehicle wiper device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle wiper device used for a vehicle having a front-rear type front window panel.

<Related Art> A wiper device used for a vehicle having a front window panel, such as a jeep or a military vehicle, has a front window panel.
The wiper arm itself of the vehicle wiper device also falls forward in accordance with the front window panel (see Japanese Utility Model Laid-Open No. 60-68851).

<Problems to be Solved by the Invention> However, in such a conventional wiper device for a vehicle, although the interference with the front window panel that falls forward can be avoided, the wiper arm is attached to the front window panel and the vehicle body after falling forward. In this state, if the occupant accidentally operates the switch of the wiper device in this state, the wiper arm may hit the front window panel or the vehicle body and cause damage. There is a possibility that the wiper mechanism itself may be damaged.

The present invention has been made by paying attention to such a conventional technique, and even if an occupant accidentally operates the switch of the wiper device after the front window panel has fallen forward, even if an unexpected situation occurs, It is an object of the present invention to provide a wiper device for a vehicle which does not cause any adverse effects as described above.

<Means for Solving the Problems> A swinging part that is integrally attached to a vehicle body-side pivot shaft with a nut and that rotates forward and reverse within a certain angle range, and a recess for receiving the swinging part is provided at the base end. A wiper arm that is mounted on the arm head and that is attached to the swinging portion via an engagement screw provided at a position different from the pivot shaft. When the head is engaged with the swinging part, the arm head rotates integrally with the swinging part, and when the engaging screw is removed from the swinging part, the arm head can be rotated and stored out of the fixed angle range And the swinging portion idles in the recess with respect to the arm head in the rotated and housed state.

<Operation> When the wiper arm is not engaged with the swinging portion, the wiper arm can be rotated and housed outside the normal fixed angle range, so that interference with the front window panel that falls forward can be avoided.

In addition, since the swinging portion is free to rotate inside the recess of the wiper arm in the disengaged state, even if the occupant accidentally operates the switch of the wiper device, the swinging portion simply rotates forward and backward within a certain angle range. Already, the entire wiper arm rotates and scratches the front window panel and vehicle body,
Alternatively, there is no adverse effect such as damaging the wiper device itself.

<Embodiment> A preferred embodiment of the present invention will be described below with reference to the drawings. It is to be noted that common portions are denoted by the same reference numerals.

1 to 4 are views showing a first embodiment of the present invention. Reference numeral 1 denotes a front window panel of a front-rear type, and two wiper arms 2 are provided in front of the front window panel 1. The wiper arm 2 rotates forward and backward within a certain angle range θ. The wiper arm 3 directly wipes the front window panel 1, a retainer 4 with an arm piece that supports the wiper blade 3 at the distal end, and the retainer 4. Lifting rotation (lockback)
It is mainly composed of an arm head 5 which is freely connected. Reference numeral 6 denotes a hook, and 7 denotes a spring, which are provided for maintaining the wiper arm 2 in a lock-back state.

Reference numeral 8 denotes a pivot shaft which has a tapered shape and is rotatable forward and backward within a certain angle range. A protrusion 10 having a screw hole 9 is provided at the tip of the pivot shaft 8.
Is mounted so as to integrally rotate forward and backward.

The arm head 5 of the wiper arm 2 supports and fixes a recess 12 having a size and a shape that allows the swinging portion 11 to rotate within a predetermined angular range θ, the tip of the pivot shaft 8 and the arm head 5 itself. An opening 14 for a nut 13;
An opening 19 for an engaging screw 18 which is urged upward by a spring 15 and is prevented from falling off by engaging a step 17 with a stopper pin 16 is formed at a different position. Therefore, the arm head 5 moves the recess 12
The nut 13 is supported by fixing the nut 13 to the tip of the pivot shaft 8, and the engagement screw 18 is screwed into the screw hole 9 of the oscillation part 11 so as to be freely engageable with the oscillation part 11. You. A plate 21 is applied to the arm head 5 supported in this manner from below by a screw 20, and the swinging part 11 is housed in the recess 12. Reference numeral 22 denotes a washer, and reference numeral 23 denotes a wave washer, which provides an appropriate sliding resistance between the swing unit 11 and the arm head 5.

The wiper device for a vehicle according to this embodiment has the structure described above, and when the wiper arm 2 is used, the engagement screw 18 provided on the round head 5 is screwed into the screw hole 9 of the swing portion 11. Thereby, if the arm head 5 and the swinging part 11 are engaged (see FIG. 3), the arm head 5 and the swinging part 11
Are engaged with each other and rotate integrally forward and backward, so that the wiper blade 3 at the tip of the wiper arm 2 can wipe the front window panel 1.

When the front window panel 1 is moved forward and the wiper arm 2 is not used, the engaging screw 18 is removed from the screw hole 9 (see FIG. 4). The wiper arm 2 is brought into the engaged state, and the entire wiper arm 2 can be stored (falled forward) at a position outside the fixed angle range θ and without interfering with the front window panel 1 falling forward. Therefore, the wiper arm 2 does not cause an interference problem with the front window panel 1 which falls forward, and an appropriate sliding resistance is provided between the arm head 5 and the swinging portion 11 by the wave washer 23 or the like. Therefore, the stored wiper arm 2 does not rattle.

Further, since the swinging portion 11 can freely rotate in the recess 12 of the arm head 5 in the disengaged state, the swinging portion 11 is simply kept constant in the recess 12 even when the switch of the wiper device malfunctions. The wiper arm 2 itself rotates by simply performing the idling motion in the angle range θ, and the windshield panel 1 and the vehicle body (hood)
There is no adverse effect such as scratching the 24 or damaging the wiper device itself. Further, since the engaging screw 18 is prevented from dropping by the stopper pin 16, there is no possibility of being lost, and the screwing / removing operation of the engaging screw 18 can be easily performed.

 FIG. 5 is a view showing a second embodiment of the present invention.

The wiper arm 25 in this embodiment is provided to facilitate the lock-back operation of the bent retainer 26.
An auxiliary knob 29 for lock-back operation is provided on a center straight line 1 of a retainer base end 26a rotatably connected to an arm head 27 via a pin 28. That is, the retainer body on the center straight line 1 and near the bent portion 30
The auxiliary knob 29 is attached to the side of 26b by rivets. Reference numeral 31 denotes a hook, and the tip of the hook 31 is bent to support the spring 32 in the retainer body 26b.

The lock-back operation of the bent retainer 26 has a surface that is difficult to operate because the direction of the retainer main body 26b and the direction in which the retainer 26 is lifted (the direction of the retainer base end 26a) are different. However, in this embodiment, since the auxiliary knob 29 is located on the center straight line 1 of the retainer base end 26a, it is only necessary to grasp the auxiliary knob 29 and operate to lift only the retainer base end 26a. The entire retainer 26 can be brought into the lockback state. In addition, since the auxiliary knob 29 is located near the bent portion 30, the amount of pivot operation for lifting and pivoting can be reduced as compared with the conventional case where the retainer main body 26b is grasped.

In the vicinity of the arm head 27 of the wiper arm 25, a swinging part 34 with a protruding part 33 is provided in substantially the same manner as the previous embodiment.
35, an engagement screw 36, a nut 37, and the like are provided. The wiper arm 25 can be rotated forward and reverse to wipe the front window panel 1 as in the previous embodiment. Out of the fixed angle range θ
The swing unit 34 can be freely stored and freely rotated with respect to the arm head 27. The other configuration and operation and effect are the same as those of the previous embodiment, and redundant description is omitted.

6 and 7 show a third embodiment of the present invention.

The swinging part 38 according to this embodiment has an overall cylindrical shape in which the projecting part 10 is just removed from the swinging part 11 shown in the first embodiment, and the recess 40 of the arm head 39 also has It has a shape corresponding to the swinging portion 38 to allow the rotation of the swinging portion 38. A cutout recess 41 is formed on the side of the swinging portion 38, and an engagement screw 42 is provided on the side of the arm head 39 so that the tip can freely engage the cutout recess 41. The engaging screw 42 has an inner surface formed on the arm head 39 screwed and housed in a female screw opening 43 and engages the step portion 45 with a stopper plate 44 provided at the entrance of the screw opening 43. By doing so, the fall is prevented.

Accordingly, by engaging or disengaging the engaging screw 42 with the notch concave portion 41 of the swinging portion 38, the wiper arm 46 is rotated forward and reverse in the same manner as in the previous embodiment to wipe the front window panel 1. If it can be performed, the wiper arm 46 can be freely rotated and housed outside the fixed angle range θ, and the swinging part 38 can be freely rotated with respect to the arm head 39. The other configuration and operation and effect are the same as those of the previous embodiment, and redundant description is omitted.

<Effect> The wiper device for a vehicle according to the present invention has the contents as described above, and the wiper arm can be rotated and housed outside the normal fixed angle range when the wiper arm is not engaged with the swinging portion.
Interference with the forward-type front window panel can be avoided.

In addition, since the swinging part is free to rotate with respect to the disengaged wiper arm, even if the occupant accidentally operates the switch of the wiper device, the swinging part only needs to rotate forward and backward within a certain angle range. Thus, there is no possibility that the wiper arm will rotate and damage the front window panel or the vehicle body or damage the wiper device itself.

Further, according to the embodiment of the present invention, since the engagement screw is prevented from dropping, there is no fear of losing the engagement screw,
In addition, the work of screwing and removing the engagement screw can be easily performed.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of an automobile showing a first embodiment of the present invention, FIG. 2 is a partially cutaway side view showing a main part of a wiper arm, and FIG. 3 is a main part of an arm head showing an engaged state. FIG. 4 is an enlarged sectional view of a main part of an arm head showing a disengaged state, FIG. 5 is a plan view of a wiper arm showing a second embodiment of the present invention, and FIG. 6 is a third view of the present invention. FIG. 3 is an enlarged sectional view corresponding to FIG. 3 showing an embodiment, and FIG. 7 is a plan view of a partial section taken along line VII-VII in FIG. 1 Front window panel 2, 25, 46 Wiper arm 5, 27, 39 Arm head 8 Pivot shaft 11, 34, 38 Oscillating part 18, 36, 42 Engagement screw θ ... Constant angle range 1 ... Center straight line

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Katsuhiro Yoneyama 1-10-10 Koura, Kanazawa-ku, Yokohama City Inside Takada Kogyo Co., Ltd. (72) Inventor Takashi Katsuno 3-10- 743 (56 References: Japanese Utility Model Application Sho 59-63061 (JP, U) Japanese Utility Model Application Sho 57-194858 (JP, U)

Claims (1)

(57) [Claims] An oscillating portion (11) integrally attached to a vehicle body-side pivot shaft (8) by a nut (13) and rotating forward and reverse within a predetermined angle range (θ), and receives the oscillating portion. A concave portion (12) is provided in the base arm head (5), and the arm head is engaged with the swinging portion via an engagement screw (18) provided at a position different from the pivot shaft. A wiper arm (2) that can be freely attached to the arm unit. When the arm head is engaged with the swing unit by the engagement screw, the arm head rotates integrally with the swing unit, and the engagement screw swings. A vehicle wherein the arm head can be rotated and housed outside the predetermined angle range when the arm head is removed from the moving part, and the swinging part idles in the recess with respect to the arm head in the rotated and housed state. Wiper device.