Device for the positional securing of a unit
A device for securing a unit in a housing, in particular for securing a fixed bearing of a pinion in a steering gear of a motor vehicle, comprises a securing element which is inserted into a bore in the housing. The securing element is provided with at least one latching lever, wherein the at least one latching lever latches into toothing gaps of a toothing geometry in the bore of the housing via a latching lug disposed at the free end of the latching lever, or wherein at least one latching lug is disposed in the bore, which latches into toothing gaps of a toothing geometry in the securing element.
1. A device for securing a position of a fixed bearing of a pinion in a steering gearbox housing of a motor vehicle, comprising:
a securing element having a first section including an external thread and a second section including a radially adjusting latch mechanism, the securing element having a longitudinal depth;
the securing element mating into a bore of the gearbox housing along said first section;
the radially adjusting latch mechanism comprising a center hub, a plurality of rib elements extending radially from the center hub, and a plurality of latching levers;
wherein each one of said plurality of rib elements is configured as a spoke of the center hub;
wherein for at least a first subset of said plurality of rib elements each one rib element of said first subset has a portion that inclines from one radial point to another radial point of said one rib element so that the first radial point is at one longitudinal depth of the securing element and the second radial point is at a different longitudinal depth of the securing element;
wherein for at least a second subset of said plurality of rib elements, a corresponding one of said plurality of latching levers is integral to an end of a corresponding rib element of said second subset and extends circumferentially to a distal end at which is located a latching lug;
wherein said plurality of latching levers are unevenly distributed about a circumference of the second section; and
wherein said latching lug for at least one of said plurality of latching levers is configured to latch into a toothing gap of a toothing geometry in said bore of the steering gearbox housing to secure said position of said fixed bearing in said steering gearbox housing.
2. The device according to claim 1 , wherein said first section is hollow.
3. The device according to claim 1 , wherein said plurality of latching levers comprise at least four latching levers disposed distributed around the circumference of the second section.
4. The device according to claim 1 , wherein the plurality of latching levers are spaced apart along a circumference of the second section to have an interspacing between a distal end of each one latching lever and a proximal end of an other latching lever nearest to said distal end, wherein said interspacing is larger than said toothing gap in the toothing geometry of the steering gearbox housing for each said interspacing among said plurality of latching levers.
5. The device according to claim 1 , wherein the securing element is a plastic body made of a fiber-reinforced thermoplastic as an injection-molded part or as a multi-component part.
6. The device according to claim 5 , wherein an orientation of fibers in the thermoplastic extends in a direction of a greatest thermal expansion of said thermoplastic.
7. The device according to claim 5 , wherein the plastic body is provided with a central injection point.
8. The device according to claim 1 , wherein the external thread comprises a metric V-thread.
9. The device according to claim 1 , wherein the external thread comprises a conical thread.
10. The device according to claim 5 , wherein the plastic body is a multi-component injection-molded part, and further comprising a sealing ring, the securing element mating into said bore of the gearbox housing and having an annular groove into which is received the sealing element which seals the securing element within the gearbox housing.