JPS591868Y2 - rear window wiper - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an automobile rear window wiper.

As illustrated in FIG. 1, a conventional rear window wiper has a wiper swing shaft 7 protruding from the rear panel 1a of a vehicle body 1, and a wiper arm 8 connected to a wiper blade portion 9 on the swing shaft 7. It is constructed in a fixed manner.

As a result, the vehicle body rear panel 1a needs to be formed with a width l sufficient to accommodate the wiper swing shaft 7, which reduces the effective opening area of the trunk 3 and makes it difficult to take in and out luggage. There were drawbacks that caused inconvenience.

In addition, since the wiper swing shaft 7 is away from the surface to be wiped, that is, the rear windshield 2, the swing angle of the wiper arm 8 becomes small, and furthermore, the wiper blade part 9 and the wiper arm 8 are separated from each other by the wiper. Since the connection must be made at a certain angle and at a position that does not obstruct the driver's view during operation, there is a drawback that the area to be wiped on two surfaces of the rear window glass becomes small.

Furthermore, since a link mechanism is normally used in the drive system of the wiper swing shaft 7, this link mechanism is connected to the trunk room 3.
It may protrude significantly inside and interfere with the cargo, damaging the cargo.
This has the drawback of causing malfunction of the non-stop mechanism.

Note that 4 in the figure indicates a trunk lid. In view of these conventional drawbacks, the present invention fixes a drive unit that integrates a motor and a speed reduction mechanism to the vehicle body, and arranges a wiper swing shaft that protrudes from this drive unit so as to penetrate through the peripheral edge of the rear window glass. By supporting the rear window glass with a bearing supported on the vehicle body side member, the wipe area of the rear window glass is increased, the effective opening area of the trunk is increased, the space occupied by the wiper drive system in the trunk is reduced, and the number of parts is reduced. This design aims to reduce the amount of water and protect the glass.
Examples thereof will be described below with reference to the drawings.

That is, in the present invention, as shown in FIGS. 2 and 3, a mounting hole 2a for the wiper swing shaft 7 is provided at the center of the lower edge of the rear window glass 2, and the wiper swing shaft 7 is inserted through the mounting hole 2a. A wiper swing shaft 7 protruding from a drive unit 11 to be described later is provided.

This swing shaft 7 is supported by a bearing 10 fixed to a vehicle body side member, that is, a reduction mechanism 12 in this embodiment, and is supported by a spacer 10.
Its protrusion length is regulated by a.

Furthermore, a seal member 16 made of rubber or the like is interposed on both the interior and exterior surfaces of the rear window glass 2 through which the swing shaft 7 passes to seal the inside and outside of the vehicle interior, and a spacer is a metal member. 10a functions as a protector so that it does not come into direct contact with the rear window glass 2.

Furthermore, a glass protector 17 is also provided between the bearing 10 and the mounting hole 2a to prevent direct contact between the rear window glass 2 and the bearing 10.

The base of the wiper arm 8 is fitted onto the protruding end of the swing shaft 7 and fixed with a nut 18.

Further, the drive unit 11 consisting of a speed reduction mechanism 12 and a motor 13 that transmits power to the swing shaft 7 is connected to a bracket 14.
It is fixed with screws 19 to the rear parcel shelf 6 which separates the vehicle interior 5 and the trunk room 3 via the screws 15.

Therefore, according to the rear window wiper of the present invention, which has such a preemptive structure, the wiper swing shaft 7 is connected to the rear window glass 2.
Because it is disposed penetrating the peripheral edge of the vehicle body rear panel 1, unlike conventionally disposed on the vehicle body rear panel 1a.
There is no need to secure an installation area for the wiper swing shaft, and as a result, the effective opening area of the trunk room 3 can be expanded, and the usability of the trunk room 3 can be improved.

Further, the wiper swing shaft 7 is located within the surface to be wiped (rear window glass), and the wiper arm 8 and the wiper blade 9 can be connected to each other by aligning them almost in a line. Therefore, the wiper blade 9 can be connected as shown in FIG. As shown in the example, since it can be swung in an angular range of approximately 180 degrees, the wiping area can be expanded to ensure sufficient rear visibility and safety can be further improved.

In addition, the drive unit 11 is constructed by integrating the speed reduction mechanism 12 and the motor 13, eliminating the need for a link mechanism in conventional devices, which greatly reduces the number of parts. It is possible to avoid this from protruding greatly inward and interfering with the cargo, damaging the cargo or causing malfunction.

Moreover, since the drive unit 11 is fixed to the vehicle body, there is no load burden on the rear window glass 2, and the drive unit 11 can be freely selected in a position where it does not obstruct visibility and does not become a protrusion in the vehicle interior. It has the advantage of being able to be worn.

Furthermore, since the wiper swing shaft is held by a bearing supported on the car body side member, the reaction force from the blade is transmitted to the car body, so there is almost no load on the glass, and the risk of glass breakage is extremely low. .

In addition, since a protector 16 that also serves as a seal is interposed between the wiper swing shaft 7 and the rear windshield 2, this protector 16 can reduce the vibration difference between the rear windshield 2 and the wiper swing shaft 7. can be absorbed into the glass, and the glass can be protected by eliminating metal contact with the glass.

Furthermore, as mentioned above, there is no need to secure the necessary installation area for the wiper swing shaft 7 on the rear panel 1a of the vehicle body, which simplifies vehicle body design. Since there is no need to stock the parts, it has various practical effects, such as reducing vehicle body manufacturing equipment costs, reducing manufacturing costs, and preventing the complexity of parts management due to an increase in the number of parts.

[Brief explanation of drawings]

Figure 1 is a rear view of a car equipped with a conventional rear window wiper, Figure 2 is a rear view of a car equipped with the rear window wiper of the present invention, and Figure 3 is a cross-sectional explanatory view of the wiper swing shaft attachment part. , FIG. 4 is an explanatory diagram showing the wiping range by the wiper blade. 1... Vehicle body, 2... Rear window glass, 3...
Trunk room, 4... Trunk lid, 7... Wiper swing shaft, 8... Wiper arm, 9... Wiper blade, 11... Drive unit, 12... Reduction mechanism, 13... Motor, 16.17...Protector.

Claims (1)

[Scope of utility model registration request] A drive unit that integrates a motor and a speed reduction mechanism and is fixed to the vehicle body; a bearing that holds a wiper swing shaft that protrudes from the drive unit and is supported by a vehicle body side member; and the bearing that is provided on the peripheral edge of the rear window glass. A rear window window 7 is characterized in that it comprises a through hole into which is loosely fitted, a glass protector provided on the outer periphery of the bearing of the rear window glass penetration part, and a protector that covers the gap between the through hole and the bearing.