US 12,449,020 B2
Adjustment mechanism and adjustment device comprising such adjustment mechanism
Jannick Daniël Wijntjes, Rotterdam (NL); François Roderik Henri Bouaziz, Rotterdam (NL); Peter Alexander Hamming, Ermelo (NL); Léo Brière, Maarssen (NL); Yi Song, Woerden (NL); Tom Adriaan Jansen, Utrecht (NL); Justin Fransen, Zaandam (NL); Meindert Jan Solkesz, Rotterdam (NL); Marinus Jacobus Maria Van Zuijlen, Woerden (NL); and Stefan Fritz Brouwer, Schoonhoven (NL)
Assigned to MCi (Mirror Controls International) Netherlands B.V., Woerden (NL)
Appl. No. 18/838,170
Filed by MCi (Mirror Controls International) Netherlands B.V., Woerden (NL)
PCT Filed Feb. 13, 2023, PCT No. PCT/NL2023/050064
§ 371(c)(1), (2) Date Aug. 13, 2024,
PCT Pub. No. WO2023/153931, PCT Pub. Date Aug. 17, 2023.
Claims priority of application No. 2030921 (NL), filed on Feb. 14, 2022.
Prior Publication US 2025/0146555 A1, May 8, 2025
Int. Cl. F16H 1/20 (2006.01); F16H 1/22 (2006.01); F16H 55/24 (2006.01); F16H 57/02 (2012.01); F16H 57/03 (2012.01); F16H 57/039 (2012.01); F16H 57/021 (2012.01); F16H 57/032 (2012.01)
CPC F16H 1/225 (2013.01) [F16H 55/24 (2013.01); F16H 57/03 (2013.01); F16H 57/039 (2013.01); F16H 2057/0213 (2013.01); F16H 2057/0325 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An adjustment mechanism for an adjustment device, the adjustment mechanism comprising:
a main worm gear wheel held in an injection molded plastic housing for rotation relative to each other about a main axis of the main worm gear wheel, the main worm gear wheel being provided with a hollow central axial passage and the housing being provided with at least one opening that is axially aligned with the central axial passage to allow a shaft to extend via the opening through the housing into the central axial passage and to be in supporting engagement with the main worm gear wheel; and
a main worm having at least one circumferential spiral tooth in intermeshing arrangement with teeth on the circumference of the main worm gear wheel, the main worm being held in the housing for rotation about a main axis of the main worm, and being arranged to be driven to rotation relative to the housing about the main axis of the main worm via a drive train powered by an electric motor held in the housing,
wherein a number of stiffeners is provided between the housing and at least one of the main worm gear wheel and the main worm to lock the intermeshing arrangement of the teeth under torque that is applied between the main worm gear wheel and the housing external to the drive train, and
wherein the stiffeners limit rotation of the housing relative to the main gear wheel under a moment of 5 Nm applied between the housing and the main gear wheel when the drive is not in operation to less than 3°.