| 摘要 |
An integrated door lock sub-assembly 10 for a door lock, comprises a sub-assembly support element 12 having a motor housing 18 integrally formed with a gear-support platform 18a, a motor stator 40 and rotor core 42 receivable within the motor housing 18 with the output shaft 16 having an end 52 journaled in a perimeter side wall 24 of the motor housing. A commutator 38 on the output shaft 16 engages bushes 36 carried by brush block 32 secured to the motor housing 18 and at least one gear 54 mounted for rotation on the gear-support platform 18a driven by worm 48 mounted directly or indirectly to the output shaft 16. Lid 22, secured by laser/ultrasonic welding or snap-fit, seals the housing and may be located by upstanding potions of the bearings 44b,44a. Bearing 44a and the shaft also seals the housing from contamination by grease and dirt. The end 46 of the shaft may be supported by portion 50. The arrangement prevents/limits motor contamination and prevents/limits stack-up tolerances in the sub-assembly. The sub-assembly may be used as an actuator in other applications and a induction motor with slip rings or brushless motor may be substituted. |
