Method of producing a safety belt retractor
AssigneeTRW Repa GmbH
InventorsThomas Kielwein, Johannes Schmid
Life of this patent
Estimating the term…
Abstract
A safety belt retractor provided with a vehicle sensitive control system for its blocking mechanism is produced by providing a cap wherein said control system is received and mounting the cap with the control system on a side wall of the retractor housing. The cap and the control system are provided as a preassembled unit. The control system has a control disc to be mounted on the belt take-up shaft for joint rotation therewith. The control disc and shaft are provided with axial spline elements for engagement with each other. When the preassembled unit is placed on an adjacent side wall of the housing, the spline elements of the shaft and of the control disc come into engagement with each other.
Claims13
A method of assembling a safety belt retractor having a loadbearing housing, a belt take-up shaft rotatably mounted in the housing, a blocking mechanism with a blocking pawl, and a vehicle-sensitive and/or webbing-sensitive control system with functional parts for activating the blocking pawl, the control system being provided with a mounting plate on which the functional parts are mounted and being surrounded by a cover cap placed onto one side of the housing and secured to the housing by means of detent elements, the control system having a control disc connected non-rotatably to the belt take-up shaft, the control disc and the belt take-up shaft having complementary configurations, said method comprising the steps of:
- a) preassembling the control system and the cover cap to provide a unit with the mounting plate fitted into the cover cap;
- b) placing the preassembled unit onto the one side of the housing in a location coaxial with the belt take-up shaft;
- and
- c) engaging the complementary configurations of the control disc and the belt take-up shaft with each other by pushing the complementary configurations axially into each other when step b) is performed.
A method of assembling a safety belt retractor having a loadbearing housing with one side provided with an opening for receiving a guide pin, a belt take-up shaft rotatably mounted in the housing, a blocking mechanism with a blocking pawl, and a vehicle-sensitive and/or webbing-sensitive control system with functional parts for activating the blocking pawl, the control system being provided with a mounting plate on which the functional parts are mounted and being surrounded by a cover cap placed onto the one side of the housing and secured to the housing by means of detent elements, the control system having a control disc connected non-rotatably to the belt take-up shaft, the control disc and the belt take-up shaft having complementary configurations, said method comprising the steps of:
- assembling the control system and the cover cap to provide a unit with the housing plate fitted into the cover cap and with a guide pin extending outward from the unit, and
- attaching the unit to the housing subsequent to assembling the unit, including locating the unit in a position coaxial with the belt take-up shaft, engaging the complementary configurations of the control disc and the belt take-up shaft together, and positioning the guide pin in the opening in the housing.
Dependencies are inferred from the claim text.