A light assembly includes a housing which defines a longitudinal axis. A hollow holding ring and a reflector are fixed within the housing and spaced apart along the axis. A hollow positioning sleeve is disposed at a rear end of the reflector and is arranged on the axis at a distance forwardly from the holding ring. A tube extends along the axis and includes front and rear portions. The front portion is mounted in the positioning sleeve and includes a bulb receptacle for positioning a bulb within the reflector. The rear portion includes an electrical connection portion disposed in the holding ring. The tube is inserted axially through the holding ring and the positioning sleeve and into the reflector and then is rotated about the axis in order to cause the tube to become locked against axial movement relative to the reflector.
A smoothly operating tilting device (11) for a support plate (12) of a motor-adjustable motor vehicle exterior mirror is disclosed. The plate (12) has an articulating joint to a housing (13), for a rigid mounting. A drive motor (17) is furnished, for each of the both, orthogonal to each other (although arrangeable in any special disposition) tilting directions, which are connected to, at least in parts, flexible positioning rods (18). The above run in an arched guide (22) and are turned from the plane disposed parallel to the plate (12) in to the transverse direction, in order to bridge the mounting gap and connect with an articulated joint to the face of the back side, or the interior of the plate (12), for the transfer of pushing or pulling movements.
The refinement of such harmonic drives according to German Patent 1 98 33 290 C1=European Patent Application 0 974 773 A concerns damping of the noise generation as a consequence of the revolving displacement of discrete tappets (instead of the rotating deformation of the closed hub of a spoked wheel) on the non-round wave generator. Since the feet of the individual--not guided in a cage, but rather connected to one another by a flexible ring band--tappets are no longer solid, but rather split, they are to be able to elastically bend so they may press continuously against the drive core of the wave generator. The peripheral connection of the neighboring tappets via the ring band, which is thin in comparison to their diameters, is to be laid out in such a way that a spring effect is achieved, using which the tappet--even in the course of instantaneous reduction in diameter as the drive core, which is oval in cross-section, rotates out of the angular region of its greatest diameter--is always kept radially pressing snugly against the non-round wave generator in order to, in this way, suppress a noise-generating radial rebound from a displacement position which is still radially lifted.
A shaft drive (10), which may be produced without problem and easily--even in a cascade--assembled, may be achieved, whereby the support ring (18) produced such as to be floating relative to the housing is rotationally fixed on the front side to a housing base plate (12) and enclosed by a housing cover (20), similarly fixed to the base plate (12), in which the drive shaft (25) for the crowned drive ring (27), which may rotate relative to the support ring (18), has a floating bearing. The inner wheel (28), extending through both rings is however not supported in the housing, but rather mounted on the drive shaft (14) extending coaxially into the housing (11) through the base plate (12), by means of the wave generator drive core (30), the base plate (12) being non-rotationally mounted in front of the bearing plate (32) of the above.
In order to guide supply or construction elements through a harmonic drive (8) in a central manner, said harmonic drive is embodied in a hollow gear. The harmonic drive directly provides a given correcting translatory variable which is defined by the speed of rotation of the output ring and motor driven harmonic generator when the output ring axially displaces a threaded rod (26) which freely extends in a coaxial manner through a longitudinal bore in the harmonic drive and engages with said output ring, said axial displacement occurring as a result of the rotational movement of the inner thread of the output ring, whereby the threaded rod is secured to the housing and prevented from rotating (29, 30). The threaded rod can move in a linear manner in relation to the gear motor (13) when the gear motor is installed in a stationary manner or when the treaded rod is installed in a stationary manner.