JP2550867Y2 - Wiper with ice and snow removal device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper for wiping off dirt on a glass surface of a vehicle or the like, and more particularly to a wiper having an ice and snow removing device suitable for preventing icing of a wiper blade and snow.

[0002]

2. Description of the Related Art In a cold region or the like, if there is snowfall or icing, there is a problem that snow and ice accumulate on a wiper blade and the wiper cannot swing. In that case, it is necessary to go out of the vehicle and wipe off ice and snow attached to the wiper. This work is troublesome and must be performed frequently, which is a major problem in running in cold regions. As a known technique for preventing breakage of the wiper blade due to snow or ice adhering to the glass surface side, Japanese Utility Model Application Laid-Open No. 58-19 / 1983
There is a conventional technique disclosed in Japanese Patent No. 861. This technology is
A wiper blade protection device for lifting a wiper blade from a glass surface is provided on a wiper arm, and the rotation of the lift stand is operated by an operation unit provided in a driver's seat. It has been disclosed.

[0003]

[Problem to be solved by the present invention]
With the wiper blade protection device disclosed in Japanese Patent Publication No.
Adhesion of the wiper blade to the glass surface due to ice or snow is prevented. However, as described above, in the case of this conventional technique, the wiper blade is moved to a position separated from the glass surface by the floating stand to prevent adhesion by ice and snow, and the floating stand is used. During this time, the wiper cannot be swung. For this reason, ice and snow adhere to the glass surface while the wiper blade is being lifted, and the floating stand is released to swing the wiper blade while making contact with the glass surface to remove the ice and snow that has adhered to the glass surface. However, there is a problem that it cannot be actually removed. Furthermore, the operation of the floating stand is performed by an operation unit provided in a driver's seat, and there is a problem that it is complicated and dangerous to repeatedly operate the operation unit while running the automobile.

[0004] The present invention solves the above-mentioned problems, and reliably prevents snow and ice from forming on the wiper blade, and can remove ice and snow even when the wiper blade swings, and operates the same. It is an object of the present invention to provide a wiper having an ice / snow removing device in which the operation is extremely easily and surely performed.

[0005]

According to the present invention, there is provided a wiper having an ice and snow removing device for removing an ice and snow attached to a wiper blade by vertically moving a wiper blade with respect to a glass surface. The ice and snow removing device comprises: a gear box with a drive motor detachably fixed to a base end side of a wiper; a link connecting a base end to a rotating shaft protruding from the gear box; A wire provided between the section and the wiper blade, the drive motor rotates the rotary shaft by a predetermined range to lift the wiper blade, and the driven gear connected to the rotary shaft includes: A wiper having an ice and snow removing device having teeth formed only in the predetermined range is provided.

[0006]

When the drive motor of the ice and snow removing device is operated, the link rotates and the wire connected to the link is pulled. As a result, the wiper blade moves upward away from the glass surface, and reaches the end point of lifting. Since the driven gear connected to the rotating shaft that rotates the link has teeth only up to the end point of the lifting, the connection between the drive motor and the rotating shaft is released after this position, and the wiper The blade is automatically dropped on the glass surface by the reaction force of the wiper stand spring. As described above, by repeatedly moving the wiper blade upward and automatically falling, the wiper blade moves up and down on the glass surface to remove ice and snow on the glass surface, and the wiper blade adheres to the glass surface by ice and snow. Is prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a wiper 1 includes a wiper main body 3 having a general shape in which a wiper blade 6 is brought into contact with a glass surface 5 of a glass 4 and an ice and snow removing device 2 detachably attached thereto. The wiper body 3 includes a wiper arm support bracket 7 connected to a rotating shaft of a wiper drive motor (not shown) and disposed at a base end side of the wiper body 3, a wiper arm 8, a wiper blade 6, a wiper stand spring 9, and the like. Is done. The wiper arm 8 has the tip end connected to the wiper blade 6, and the other end connected to the wiper arm support bracket 7 by pins 22. The wiper stand spring 9 is provided between the wiper arm support bracket 7 and the wiper arm 8 and urges the wiper blade 6 so as to constantly press the wiper blade 6 toward the glass surface 5.

As shown in FIG. 1, the ice and snow removing device 2 includes a gear box 11 to which a drive motor 10 (FIG. 2) is attached.
And a link 13 connecting the base end to a rotating shaft 12 protruding from the gear box 11, and a wire 14 laid between the distal end of the link 13 and the wiper arm 8.
The gear box 11 is detachably fixed on the wiper arm support bracket 7 of the wiper body 3 by bolts 15 or the like. 2 and 3 show the internal structure of the gear box 11 and the connection structure between the drive motor 10 and the rotating shaft 12 and the like. A worm gear 17 is fixed to the distal end side of the drive shaft of the drive motor 10 fixed inside the gear case 16. The worm wheel 18 meshing with the worm gear 17 is fixed to a support shaft 19 pivotally supported by the gear case 16. A small gear 20 is fixed to the support shaft 19.
On the other hand, the rotation shaft 12 is parallel to the support shaft 19 and the gear case 16.
, One end of which is projected from the gear case 16. A large gear 21 is fixed to the rotating shaft 12, and the large gear 21 meshes with the small gear 20. The small gear 20 has teeth on its entire circumference, but as shown in FIG. 3, the large gear 21 has teeth only on portions other than the angle θ. It is desirable that the angle θ be set to an angle not exceeding 180 °. With the above structure, when the drive motor 10 is operated, the small gear 20 rotates via the worm gear 17 and the worm wheel 18 and the large gear 21
Tell the rotation. However, even if the small gear 20 rotates, the large gear 21 can rotate only from the point A to the point B excluding the range of the angle θ. On the other hand, as described above, since the link 13 is fixed to the rotating shaft 12 protruding from the gear case 16, the link 13 rotates around the rotating shaft 12 with the rotation of the large gear 21 to reciprocate the wire 14. .

Next, the operation of this embodiment will be described with reference to FIGS. 4 and 5 to 8. In a state where the ice and snow removing device 2 is not operated, the wiper blade 6 is placed on the glass surface 5 as shown in FIG.
The wiper stand spring 9 is pressed against the glass surface 5 by a tensile force of a wiper stand spring 9 and is swung along the glass surface 5 by a wiper drive motor (not shown) to wipe off rainwater or the like on the glass surface 5. FIG. 5 shows a meshing state of the small gear 20 and the large gear 21 in this state. That is, the small gear 20 meshes with the large gear 21 at the point A. Next, the drive motor 10 is operated to move the small gear 20 to the position shown in FIG.
When rotated in the direction of the arrow shown in FIG.
Moves to a point C intermediate between the points A and B. The wire 14 is moved in the pull-in direction by the rotation of the large gear 21 from the point A to the point C, and the wiper blade 6 is lifted. As shown in FIG. 7, when the large gear 21 is rotated from the point C to the point B, the wiper blade 6 is further lifted, and reaches the lifting end point at the point B. This state is indicated by a two-dot chain line in FIG. 4, and the wiper blade 6 rotates about the pin 22 and is lifted to a position separated from the glass surface 5. As shown in FIG. 8, when the meshing point between the small gear 20 and the large gear 21 exceeds the point B, the tooth portion of the large gear 21 disappears, so that even if the small gear 20 rotates, the rotation is not transmitted to the large gear 21 side. At this position, the rotating shaft 12 is in a free state, so that the wire 14 is pulled in the direction of arrow D in FIG. 8 returns to the state of FIG. At the same time, the wiper blade 6 moves toward the glass surface 5 from the position indicated by the two-dot chain line in FIG. 4 and is pressed against the glass surface 5 again. In the range of the angle θ from the point B to the point A shown in FIG. 8, the large gear 21 is rotated by the spring force of the wiper stand spring 9 as described above. It rotates at a speed faster than the rotation speed. Therefore, the wiper blade 6 strongly contacts the glass surface 5 and gives an impact force. While the operation of the drive motor 10 is continued, the operations shown in FIGS. 5 to 8 are repeatedly performed.
The wiper blade 6 repeatedly moves up and down, and repeatedly applies the above-described impact force to the glass surface 5 side. Therefore, the glass surface 5
Even if ice or snow is about to adhere, the snow or ice is removed by the vertical movement of the wiper blade 6 of the ice and snow removing device 2 and the impact thereof, and snow and ice formation on the wiper blade 6 are completely prevented. On the other hand, since the ice and snow removing device 2 is performed independently of the operation of the wiper main body 3, the same operation is performed when the wiper main body 3 is stationary and when the wiper main body 3 is operating. In particular, when the wiper main body 3 is stationary, snow and icing of the wiper blade 6 occur. However, by operating the ice and snow removing device 2 as described above, it can be completely prevented.

In this embodiment, the internal structure of the gear box 11 is shown in FIGS. 2 and 3, but is not limited thereto. Further, the connection structure, the shape, the number, and the like of the link 13 and the wire 14 are not limited to the embodiment. Although the switches of the drive motor 10 and the like are not described, it is desirable to dispose them in a driver's seat or the like where they can be easily operated.

[0011]

According to the present invention, the following remarkable effects are obtained. (1) The wiper blade moves up and down on the glass surface by appropriately operating the ice and snow removing device, and repeatedly applies an impact force to the glass surface, so that snow and icing on the wiper blade and the glass surface are reliably prevented. Is done. (2) The ice and snow removing device operates independently of the movement of the wiper main body, and is particularly effective when the wiper main body is at rest, and is effective in preventing snow and ice accretion of the wiper blade when the vehicle stops in cold weather. is there. (3) The operation of the ice and snow removing device is very simple, only by operating the drive motor when necessary. (4) The ice and snow removing device is easily and detachably attached to the existing wiper main body, and has a wide application range.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire structure of an embodiment of the present invention.

FIG. 2 is a sectional view showing an internal structure of a gear box of the ice and snow prevention device.

FIG. 3 is a sectional view taken along line FF of FIG. 2;

FIG. 4 is a side view for explaining the operation of the embodiment.

FIG. 5 is a plan view showing a relative position of a link and a wire when the embodiment is stopped, and shows a meshing relationship of the large and small gears in a state where the wiper blade is in contact with a glass surface.

FIG. 6 is a plan view showing a relative position of a link and a wire during the operation of the embodiment.

FIG. 7 is a plan view showing the relative positions of links and wires when the wiper blade of the embodiment is at the end point of lifting.

FIG. 8 is a plan view showing a relative position of a link and a wire while the wiper blade of the embodiment is moving from the position of FIG. 7 toward the glass surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wiper 2 Ice and snow removing device 3 Wiper main body 4 Glass 5 Glass surface 6 Wiper blade 7 Wiper arm support bracket 8 Wiper arm 9 Wiper stand spring 10 Drive motor 11 Gear box 12 Rotary shaft 13 Link 14 Wire 15 Bolt 16 Gear case 17 Warm gear 18 Warm wheel 19 Support shaft 20 Small gear 21 Large gear 22 Pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A wiper having an ice and snow removing device that moves a wiper blade up and down with respect to a glass surface to remove ice and snow attached to the wiper blade, wherein the ice and snow removing device includes:
A gear box with a drive motor detachably fixed to the base end of the wiper, a link connecting the base end to a rotating shaft protruding from the gear box, and a bridge between the tip end of the link and the wiper blade. And the drive motor rotates the rotary shaft by a predetermined range to lift the wiper blade. The driven gear connected to the rotary shaft has a toothed portion only in the predetermined range. A wiper having an ice and snow removing device characterized by being formed.