Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1996-10-28
1999-04-20
Graham, Gary K.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
2392841, B60S 146, B60S 152
Patent
active
058946268
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a wiper arm, especially for motor vehicles, and more particularly to a wiper arm and a unit for surrounding a major portion of the wiper arm and having a hose for supplying a washing nozzle with washing solution.
BACKGROUND OF THE INVENTION
It is well known to have a wiper arm having a wiper rod, to whose free end a wiper blade is fastened. A jacket made of hard plastic is molded onto the open portion of the wiper rod; on the windshield side, said jacket has a one-piece molded-on open hose channel that is formed by walls and a hose channel floor. The walls of the hose channel are provided at least in some segments with an undercut to hold the hose. Such a wiper arm is described in DE-OS 41 17 106.
A disadvantage to this wiper arm is that the jacket is first molded onto the wiper rod and then the hose is inserted as a separate component into the hose channel of the jacket and must be locked. This means added installation expense.
In addition, if the wiper rod is designed in a curved manner, the walls of the hose channel must be provided with an undercut to hold the hose only in the straight areas. In the curved areas, the hose can protrude from the hose channel because of the inner stresses that arise.
It is desired to reduce the installation expense for a wiper arm with a wiper rod jacket and a hose for the washing solution line and in holding the hose securely on the wiper rod.
SUMMARY OF THE INVENTION
This present invention provides that the open portion of the wiper rod of the wiper arm over at least a majority of its length has a jacket and a hose to supply the washing nozzle on the wiper arm with washing solution, whereby said jacket is manufactured in one piece as a unit made of flexible material. This unit, which consists of a jacket for the wiper rod and solution hose, has a channel for accommodating the wiper rod, whereby the cross-section of this channel is matched at least approximately to the cross-section of the wiper rod. In addition, this unit has one or more solution channels with a preferably round cross-section. The solution channels and the channel for accommodating the wiper rod are separated from one another by corresponding partitions.
To be able to mount the unit on the open portion of the wiper rod in as simple a manner as possible, one wall of the channel is divided to accommodate the wiper rod over the entire length of the unit. The portions of the divided wall that face one another are designed as a closure.
When it is installed on the wiper rod, the unit that consists of a jacket and a hose is extremely simple to handle since this is only a single component. The divided wall of the unit is opened out against elastic prestressing to the extent that the unit can be pushed onto the wiper rod crosswise to its longitudinal extension. Because of the flexible material used, this opening out and pushing open of the unit on the wiper rod can also be progressively accomplished locally in the longitudinal direction, whereby the unit can also advantageously follow bends in the wiper rod without forming folds in the curved areas. After the closure is closed, which also can be done continuously locally in the longitudinal direction, the unit is held securely on the wiper rod and forms a jacket for the wiper rod that is both protective and aesthetically pleasing.
In each case, one end of a solution channel is to be connected by a connecting hose and a connecting support to a washing nozzle or by a connecting line to the washing nozzle. The agents and measures that are necessary in this connection are sufficiently well known and do not require explanation in any greater detail.
It is advantageous if, for example, the unit that consists of the jacket and the hose is configured as a compact component with an aerodynamically and/or aesthetically advantageous shape, mainly relative to the cross-sectional shape, and extends as much as possible over the entire length of the open wiper rod. An aerodynamically and/or aesthetically advantageous shap
REFERENCES:
patent: 3827101 (1974-08-01), Wubbe
Edele Reinhard
Krizek Oldrich
Graham Gary K.
ITT Automotive Europe GmbH
Plevy Arthur L.
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