JPH0655899U - Wind wiper lift up device - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the mechanism of the windup wiper lift-up device and improve its usability. When the lift-up switch 30 is turned on, a wiper rising signal is given to the lift-up motor 24 and the motor 24 rotates in the forward direction. Then, the arm holder 16 rises, which lifts the wiper arm 14 and separates the blade from the windshield G. On the other hand, when removing the raindrops, when the lift-up switch 30 is turned on again, the wiper lowering signal is output.
4, the motor 24 rotates in the opposite direction. Then, the arm holder 16 descends and the blade contacts the window glass G.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wind wiper lift-up device for separating a wiper blade from a windshield.

[0002]

[Prior art]

 A wind wiper attached to a vehicle is configured by attaching a wiper arm to a wiper shaft driven by a wiper motor, and providing a wiper blade for wiping the windshield at the tip of the wiper arm.

In this type of wind wiper, a pressing spring is provided on the wiper arm so that the wind glass can be wiped sufficiently, and the wiper blade is pressed against the wind glass. Therefore, there is a problem that the wiper blade is plastically deformed and deteriorates during long-term use, or the wiper blade is frozen and fixed to the windshield when parked in the winter.

Therefore, conventionally, a lift-up device as shown in FIG. 5 has been devised. This is configured by rotatably mounting a stand 42 near the base end of the wiper arm 41. When the wiper arm 41 is lifted, the stand 42 (two-dot chain line is shown when the wiper arm 41 is at the wiper stop position). (See) is rotated to the position indicated by the solid line, and the tip end thereof is brought into contact with a cowl (not shown). As a result, the wiper arm 41 is held in the lifted state and the blade separates from the windshield.

[0005]

[Problems to be solved by the device]

 However, in the lift-up device as described above, the driver has to go out of the vehicle and perform a set operation each time to lift the wiper arm, which is a problem in terms of usability.

Therefore, in order to avoid such troublesome work, a wedge-shaped step member is provided in the cowl instead of the above-mentioned lift-up device, and the wiper arm is rotated beyond the wiping rotation area when the wiper is not used. It is also considered that the wiper blade is mounted on the step member and then the wiper blade is separated from the windshield. However, in this case, since the lift position of the wiper arm must be set outside the normal wiping movement region of the wiper, the drive mechanism of the wiper arm becomes complicated.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a wiper arm lift-up device which has a simple mechanism and is easy to use.

[0008]

[Means for Solving the Problems]

 The wind-up wiper lift-up device of the present invention lifts the wiper arm of the wind wiper attached to the vehicle to separate it from the windshield. The arm holder provided and the arm holder is driven in the advancing direction according to the wiper rising signal to lift the wiper arm, and the arm holder is driven in the retracting direction according to the wiper descending signal to move the wiper arm to the windshield side. And an arm holder drive mechanism for returning to the above.

[0009]

[Action]

 When the wiper lift signal is given to the arm holder drive mechanism, the arm holder drive mechanism drives the arm holder located on the back side of the wiper arm in the advancing direction. As a result, the wiper arm is lifted and the wiper blade moves away from the windshield. When the wiper descending signal is given, the arm holder driving mechanism drives the arm holder in the backward direction, so that the wiper arm returns to the windshield side and the wiper blade comes into contact with the windshield.

[0010]

EFFECTS OF THE INVENTION According to the lift-up device for a wind wiper of the present invention, it is not necessary to step out of the vehicle and perform a lift-up operation one by one, so the operation is easy and the usability is good. Further, since the lift-up operation is performed within the wiping rotation region of the wind wiper, a wind wiper device having a general structure can be used.

[0011]

【Example】

 An embodiment in which the present invention is applied to a lift-up device for a windshield wiper of a passenger car will be described in detail with reference to FIGS. 1 to 4. The overall configuration is as shown in FIG. On the upper surface of a cowl 11 provided between the engine room and the vehicle compartment, wiper shafts 12 are rotatably provided at two locations in the vehicle width direction via bearings 13. 12 is reciprocally rotated within a predetermined angle range by a wiper motor (not shown) via a link device (not shown). A wiper arm 14 is attached to the upper end side of each wiper shaft 12, and a wiper blade (not shown) is provided at the tip thereof. Although not shown, a pressing spring is provided in the base portion of the wiper arm 14 and constantly urges the wiper arm 14 in a direction in which the wiper arm 14 is pressed against the windshield G.

Arm holders 16 are provided on the upper surface of the cowl 11 on the back side of the storage positions of the wiper arms 14, respectively. These arm holders 16 are constructed by integrally providing a support plate portion 18 on the upper end of a rod 17, and the rod 17 penetrates a waterproof grommet 19 provided on the cowl 11 in the advancing / retreating direction with respect to the wiper arm 14. Can be moved.

On the other hand, the lower end of the rod 17 is connected to an arm holder drive mechanism 20 located inside the cowl 11. As shown in FIG. 2, the arm holder drive mechanism 20 includes a rack 22 attached to the lower end of the rod 17 and a pinion gear 23 that meshes with the rack 22, and the rack 22 slides on a guide member 21. The pinion gear 23 is held by the drive gear 25 provided on the rotary shaft of the lift-up motor 24 while being held. Although not shown in detail, as shown in FIG. 3, the arm holder drive mechanism 20 is provided corresponding to each of the arm holders 16 arranged side by side, and its pinion gear 23 has the same shaft 2 6 is coaxially attached to the rack 6 so that the rack 22 of each arm holder drive mechanism 20 can be driven synchronously by one lift-up motor 24.

FIG. 4 shows a drive circuit 27 for the lift-up motor 24. The drive circuit 27 is provided with signals from two detection switches, namely, an ascending position detecting switch 28 and a descending position detecting switch 29 provided on the guide member 21 of the arm holder drive mechanism 20. . On the other hand, a lift-up switch 30 is provided at the driver's seat in the vehicle at a position where the driver can operate it. The drive circuit 27 of the present embodiment has the same structure as a well-known drive circuit used for a storage mechanism of an electric door mirror of a vehicle, for example, and is provided between the drive circuit 27 and the accessory circuit (+ ACC). The lift-up switch 30 outputs a wiper up signal and a wiper down signal. When the drive circuit 27 receives the wiper lift signal from the lift-up switch 30, the drive circuit 27 rotates the lift-up motor 24 clockwise in FIG. 2, and when the arm holder 16 reaches the lifted position for lifting the wiper arm 14, the motor 24 is turned on. Stop. The fact that the arm holder 16 has reached the raised position is detected by the raised position detection switch 28 provided on the guide member 21 of the arm holder drive mechanism 20. When the lift-up switch 30 is operated in the raised position, the wiper lowering signal is given to the control circuit 27, the motor 24 rotates in the reverse direction, and the arm holder is moved to the lowered position away from the wiper arm 14. Drive 16 downwards. Also in this case, the fact that the arm holder 16 has reached the lowered position is detected by the lowered position detection switch 29 provided on the guide member 21 of the arm holder drive mechanism 20.

Next, the operation of the above configuration will be described. For example, in winter, when it is necessary to separate the wiper blade from the windshield G, the lift-up switch 30 provided in the driver's seat is turned on. Then, since the lift-up motor 24 rotates clockwise in FIG. 2, the rack 22 is displaced in the direction of the arrow and the arm holder 16 advances to the wiper arm 14 side. Then, the arm holder 16 comes into contact with the back side of the wiper arm 14, reaches the raised position while further lifting it, and when the holder 16 reaches the raised position, this is detected by the raised position detection switch 28 and the lift up motor 24 stops. As a result, the blade at the tip of the wiper is separated from the window glass G, so there is no possibility that the wiper blade freezes on the window glass G and causes a malfunction.

From this state, when it is desired to operate the wiper in order to wipe out the raindrops on the windshield G, the following is performed. First, the lift-up switch 30 is turned on again. Then, the drive circuit 27 rotates the lift-up motor 24 in the opposite direction this time, and the rack 22 is driven in the direction opposite to the arrow. As a result, the arm holder 16 that has lifted the wiper arm 14 descends, so that the blade comes into contact with the windshield G, and thereafter, the arm holder 16 separates from the wiper arm 14 and further descends, and the holder 16 moves. When it reaches the lowered position, this is detected by the lowered position detection switch 29, and the lift-up motor 24 stops. Then, when a wiper switch (not shown) is turned on, the wiper blade is reciprocally rotated while being in contact with the glass G, so that raindrops on the wind glass G are removed.

According to such an embodiment, by operating the lift-up switch 30 from inside the driver's seat, the wiper blade can be freely separated from the window glass G or brought into contact with the glass G. It is very easy to use. Moreover, since the lift-up operation is performed within the wiping area of the wind wiper, the mechanism of the wind wiper device itself does not become complicated.

The wind-up wiper lift-up device of the present invention is not limited to the above embodiment, but can be modified as follows.

(1) In this embodiment, the rotation of the lift-up motor 24 is converted into a linear motion by a rack and pinion, but the arm holder may be directly driven by using a solenoid, for example. Good.

(2) In the above embodiment, the wiper up signal and the wiper down signal are output by operating the lift up switch 30, but the present invention is not limited to this, and the wiper up signal is operated by operating the lift up switch. Is output to drive the arm holder in the ascending direction, and when the wiper arm is lowered, a wiper down signal is output when the wiper switch is turned on, and the wiper blade automatically operates before the wiper is activated. It may be configured to contact the windshield. Furthermore, without providing the lift-up switch 30, the wiper switch is turned off, and the wiper lift signal is output when the wiper wipes the wipe operation, and the wiper arm is activated each time the wiper operation is finished. It may be lifted.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an outline of a wind-up wiper lift-up device of the present invention.

FIG. 2 is an enlarged vertical sectional view of a lift-up device.

FIG. 3 is an exploded perspective view showing how the arm holder drive mechanism is driven.

FIG. 4 is a diagram showing a drive circuit of a lift-up device.

FIG. 5 is a perspective view showing a conventional lift-up device.

[Explanation of symbols]

 14 ... Wiper arm 16 ... Arm holder 20 ... Arm holder drive mechanism 24 ... Lift up motor 27 ... Drive circuit

Claims (1)

[Scope of utility model registration request] 1. A lifter for lifting a wiper arm for separating a wiper blade of a wind wiper attached to a vehicle from a windshield, wherein an arm holder is provided on a vehicle body of the vehicle, the arm holder being located behind the wiper arm and capable of advancing and retracting. An arm holder drive mechanism that drives the arm holder in the advancing direction in response to a wiper ascending signal to lift the wiper arm, and drives the arm holder in the retracting direction in response to a wiper descending signal to return the wiper arm to the windshield side. A wind up wiper lift-up device.