Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1995-06-29
1997-06-17
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Hand operated
745026, 745005, 745015R, 745016, 74523, 297374, F16C 110, F16C 112
Patent
active
056387229
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an adjustment device in a seat for a pelvis and/or lordosis support arranged in a back support connectable with the seat, with a Bowden-cable arrangement connecting the pelvis and/or lordosis support, whereby the adjustment device contains an axially movable, threaded spindle guided in a housing, a threaded ring, and an adjustment handle, and the housing and the threaded spindle each have a central bore for passing through the cable line of the bowden-cable arrangement, said bores being aligned with each other, whereby the central bore in the threaded spindle ends in an interior space for receiving a nipple of one end of the cable line, the interior space being directed at the adjustment handle.
2. Description of the Prior Art
An adjustment device is known from GB-A-2,013,487 and is used in connection with back supports of seats in connection with which the operating handle is arranged also in the back support. However, in many cases, no space is available within the zone of the back support for such manually adjustable operating handles, which for their operation also require free space, so that the operating handle has to be placed in the seat. Since the back support and the seat are, in a modern production, manufactured in different locations, there are problems during the assembly of the back support and seat with passing the one end of the cable line through the operating handle and then locking it, which often has to be accomplished under difficult spatial conditions, which means it requires expenditure in terms of time and cost.
SUMMARY OF THE INVENTION
The object of the present invention is to improve an adjustment device of the type specified above in a way such that the insertion and the end of the cable line and its anchoring in the axially movable, threaded spindle is possible without much assembly expenditure with a completely prefabricated Bowden-cable arrangement.
These and other objects of the present invention are obtained by providing an adjustment device, comprising: an axially movable, threaded spindle guided in a housing; a threaded ring, and an adjustment handle, and the housing and the threaded spindle each have an axial central bore for passing through the cable line of the Bowden-cable arrangement, said bores being aligned with each other, whereby the central bore in the threaded spindle ends in an interior space for receiving the nipple of the one end of the cable line, said interior space being directed at the adjustment handle, characterized in that a radial opening is provided in the side wall of the housing, and a cross bore ending in the zone of mounting support for the nipple is provided in the side wall of the threaded spindle, whereby the radial opening and the cross bore are aligned with each other in a mutual position of the housing and the threaded spindle, forming a common passage permitting the passing through of the nipple, whereby the opening and the cross bore each are connected with the central bore by a slot permitting passage of the cable line, said slots being disposed in a common plane.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained in the following in greater detail on an exemplified embodiment by reference to the schematic drawings, in which:
FIG. 1 shows a section through an adjustment device, into which the end of a cable line is inserted, said end being fitted with a nipple;
FIG. 2 shows the same adjustment device as in FIG. 1, whereby the nipple and the end of the cable line are in an operating position; and
FIG. 3 shows a cutout of the threaded spindle with a variation of the support for a nipple of the end of the cable line.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The adjustment device according to the exemplified embodiment has a two-stage, cylindrical housing 1, in which a threaded spindle 2 is guided axially movable, but with torsional strength on a guide (not shown). An adjustment handle 3 supports itself on the expanded stage 1a of the h
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AMEU Management Corp.
Luong Vinh T.
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