Park lock solenoid
US8400242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2009 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Jan 7, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/48
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A solenoid for a park lock mechanism wherein an annular frame has a reduced diameter at one end and receives a bobbin with a coil wound thereon with the bobbin projecting outward of the coil at one end and defining an integral bearing positioned in the one end of the annular frame. A magnetic permeable sintered metal bushing is interposed between the integrated bearing of the bobbin and the one end of the annular frame. A plunger is received in the bobbin for sliding movement relative thereto. The plunger has a first reduced section at one end that includes an element for connecting to a shifter and a second reduce section at its other end that projects out of said bobbin. The solenoid has two operating conditions, a first condition in which no magnetic force is applied to the plunger and a connected shifter is locked, and a second condition in which magnetic force is applied to the plunger and a connected shifter is unlocked for shifting. A manual release is provided for coacting with the plunger for putting the solenoid into the second condition in the absence of power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.