Control unit
AssigneePreh Elektrofeinmechanische Werke Jakob Preh Nachf. GmbH & Co.
InventorsKarl-Heinz Bauer, Reinhold Wolf
Life of this patent
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Abstract
The invention pertains to a control unit, especially for setting heating, oling and/or ventilation systems in motor vehicles. Sliding members are guided between two end positions in an oblong body. Setting members, e.g., louvers or motors, are adjusted by means of these sliding members via transmission means. A step-down unit is provided as the transmission means, which consists of a first toothed rack molded onto the sliding member and of a second toothed rack molded onto the body, and a gear which is mounted rotatably between the two toothed racks and moved when the sliding member is moved. The gear is connected to an adjusting means, e.g., a rod, which in turn operates the setting member.
Claims27
A control apparatus of the type having at least one setting member for setting heating, cooling or ventilating systems in motor vehicles said control apparatus comprising an oblong body, at least one sliding member slidable along said oblong body on a sliding path, in said oblong body, said sliding member including a U-shaped slide and a control lever, said control lever projecting from said slide and from said oblong body, said U-shaped slide including a slide base, a first toothed rack connected to said slide base forming a first leg of the U-shaped slide and at least two holding members, each of said two holding members having a projecting toe, the two holding members being connected to said slide base for collectively forming a second leg of the U-shaped slide, the U-shaped slide being positioned around a projecting portion of the oblong body with the two projecting toes slidingly engaging a surface of the projecting portion of the oblong body between the two projecting toes and the slide base thereby holding the U-shaped slide to the oblong body, and transmission means for operatively connecting said slide member with said setting member, and further characterized in that said transmission means comprises a step down unit having a fixed second toothed rack molded to said body and at least one gear in functional connection with the first and second and make toothed racks, and an adjusting means for coupling said at least one gear and said setting member, said at least one gear being operatively connected between the first and second toothed racks.
A control apparatus of the type having at least one setting member for setting heating, cooling, or ventilation systems of motor vehicles, comprising an oblong body, at least one sliding member slidingly engaged with said oblong body, a control lever mounted to said sliding member and projecting from said oblong body, a first transmission means for operatively connecting said sliding member said setting member, said first transmission means comprising a step down unit including a movable first toothed rack molded to said sliding member, a second toothed rack molded to said body and at least one gear in functional connection with the first and second toothed racks;
- adjusting means coupling said setting member and said at least one gear being operatively connected, said at least one gear between the first and second toothed racks, a projection adjoining a narrow side of the oblong body, a control knob carried on said projection from the oblong body, an illuminated display unit including a light source and fiber-optic light guides led radially out from said light source on one side of said projection, a first set of said fiber-optice light guides being arranged in a first plane around said light source and a second set of said fiber-optic light guides being arranged in a second plane around said light source displaced from the first plane.
Dependencies are inferred from the claim text.