Automotive door lock assembly

An automotive door lock assembly for use with an automotive door having outside and inside handles and a key cylinder mounted thereon, comprising:

• a door lock including a first lock/unlock mechanism which switches between an unlock condition wherein manipulation of said outside handle is made operative and a lock condition wherein manipulation of said outside handle is made inoperative and a second lock/unlock mechanism which switches between an unlock condition wherein manipulation of said inside handle is made operative and a lock condition wherein manipulation of said inside handle is made inoperative;
• and
• an electric actuator mounted to said door lock for actuating the same, said electric actuator including:
• a housing secured to a base member of said door lock;
• first and second electric motors installed in said housing;
• a first operation lever straightly movably held by said housing, said first operation lever being actuated by said first electric motor to switch between an unlock position to cause said first lock/unlock mechanism to assume said unlock condition and a lock position to cause said first lock/unlock mechanism to assume said lock condition;
• and
• a second operation lever pivotally held by said housing, said second operation lever being actuated by said second electric motor to switch between an unlock position to cause said second lock/unlock mechanism to assume said unlock condition and a lock position to cause said second lock/unlock mechanism to assume said lock condition,
• in which said electric actuator further includes:
• a rack slidably received in a groove formed in said first operation lever;
• a pinion meshed with said rack;
• and
• transmission means for transmitting the power of said first electric motor to said pinion to rotate the same.

An automotive door lock assembly for use with an automotive door having outside and inside handles and a key cylinder mounted thereon, comprising:

• a door lock including a first lock/unlock mechanism which switches between an unlock condition wherein manipulation of said outside handle is made operative and a lock condition wherein manipulation of said outside handle is made inoperative and a second lock/unlock mechanism which switches between an unlock condition wherein manipulation of said inside handle is made operative and a lock condition wherein manipulation of said inside handle is made inoperative;
• and
• an electric actuator mounted to said door lock for actuating the same, said electric actuator including:
• a housing secured to a base member of said door lock;
• first and second electric motors installed in said housing;
• a first operation lever straightly movably held by said housing, said first operation lever being actuated by said first electric motor to switch between an unlock position to cause said first lock/unlock mechanism to assume said unlock condition and a lock position to cause said first lock/unlock mechanism to assume said lock condition;
• and
• a second operation lever pivotally held by said housing, said second operation lever being actuated by said second electric motor to switch between an unlock position to cause said second lock/unlock mechanism to assume said unlock condition and a lock position to cause said second lock/unlock mechanism to assume said lock condition, in which said electric actuator further includes:
• a worm wheel driven by said second electric motor;
• an arcuate toothed part formed on a free end portion of said second operation lever, said arcuate toothed part being meshed with said worm wheel;
• a transmission lever pivotally moved together with said worm wheel;
• first transmission means which transmits the movement of said transmission lever to said first operation lever;
• and
• second transmission means which transmits the movement of said transmission lever to said second operation lever.