Motor vehicle door lock or the like

• US 6,062,613 A
• Filed: 02/08/1999
• Issued: 05/16/2000
• Est. Priority Date: 08/07/1996
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Neumann, Uwe, Linde, Hansjuergen, Huster, Bernd, Reichmann, Siegfried, Weyerstall, Bernd, Jung, Oliver, Huessler, Berthold, Allefeld, Bernd, Plett, Heinrich, Schwitters, Stefan
• Primary Examiner(s): Pham, Teri
• Application Number:
  US09/147,649
• Time in Patent Office: 463 Days
• Field of Search: 292/201, 292/216, 292/DIG. 23, 292/DIG. 42, 292/DIG. 43, 292/DIG. 67
• US Class Current: 292/201
• CPC Class Codes: E05B 77/12 Automatic locking or unlocking at the moment of collision
• CPC Class Codes: E05B 77/26 specially adapted for child safety
• CPC Class Codes: E05B 77/28 for anti-theft purposes, e.g. double-locking or super-locking
• CPC Class Codes: E05B 81/06 using rotary motors
• CPC Class Codes: E05B 81/14 operating on bolt detents, e.g. for unlatching the bolt
• CPC Class Codes: E05B 81/16 operating on locking elements for locking or unlocking action
• CPC Class Codes: E05B 81/42 Cams
• CPC Class Codes: E05B 81/82 using batteries other than the vehicle main battery
• CPC Class Codes: E05B 81/90 Manual override in case of power failure
• CPC Class Codes: E05B 85/243 with a bifurcated bolt
• CPC Class Codes: Y10S 292/23 Vehicle door latches
• CPC Class Codes: Y10T 292/1047 Closure
• CPC Class Codes: Y10T 292/1082 Motor

Abstract

A motor vehicle door lock or the like including a housing with a detent pawl including a lock catch, a dynamic actuation linkage extending from an outside door handle and an inside door handle to the detent pawl, and a controller including a control disk with a plurality of peripherally located control cams, each of the control cams corresponding to a respective one of a plurality of functional positions including "locked", "unlocked", and optionally, "theft-proof" and "child-proof" positions. The lock also includes actuating elements in a control segment of the dynamic actuation linkage which is disengaged unless it is made engaged by coupling of the actuating elements by the action of one of the various control cams on the control disk. Thus, in the "locked" position, the dynamic actuation linkage to the outside door handle is disengaged so that the motor vehicle door cannot be opened by the outside door handle but the dynamic actuation linkage to the inside door handle is engaged so that the motor vehicle door can be opened by the inside door handle, and in the "unlocked" position, the dynamic actuation linkage is engaged to both the outside and inside door handles so that the motor vehicle door can be opened by both door handles. In the "theft-proof" position, the dynamic actuation linkage is disengaged to both the outside door handle and the inside handle so that the motor vehicle door cannot be opened by either door handle, and in the "child-proof" position, the dynamic actuation linkage to the inside door handle is disengaged so that the motor vehicle door cannot be opened by the inside door handle but the dynamic actuation linkage to the outside door handle is engaged so that the motor vehicle door can be opened by the outside door handle.

Claims

1. Motor vehicle door lock comprising a housing with a detent pawl including a lock catch, a dynamic actuation linkage extending from an outside door handle and an inside door handle to said detent pawl and with which said detent pawl is actuatable to trigger said lock catch to unlock a motor vehicle door, and a control means including a control disk with a plurality of peripherally located control cams, each of said plurality of control cams corresponding to a respective one of plurality of functional positions including at least a locked position and an unlocked position,

wherein said control means is provided with a means for enabling selective displacement of the control means into a plurality of positions, in each of which a respective one of said plurality of control cams individually interacts with a control segment of said dynamic actuation linkage in a manner that, in said locked position, said dynamic actuation linkage is disengaged relative to said outside door handle as a means for preventing said motor vehicle door from being opened by said outside door handle but said dynamic actuation linkage is engaged relative to said inside door handle as a means for enabling said motor vehicle door to be opened by said inside door handle, and in the unlocked position, said dynamic actuation linkage is engaged relative to both said outside door handle and said inside door handle as a means for enabling said motor vehicle door to be opened by both said outside door handle and said inside door handle.

2. Motor vehicle door lock as claimed in claim 1, wherein said plurality of functional positions further include a "theft-proof" position in which said dynamic actuation linkage is disengaged relative to both said outside door handle and said inside door handle so that said motor vehicle door cannot be opened by either of said outside door handle and said inside door handle.

3. Motor vehicle door lock as claimed in claim 1, wherein said plurality of functional positions further include a "child-proof" position in which said dynamic actuation linkage is disengaged relative to said inside door handle so that said motor vehicle door cannot be opened by said inside door handle but said dynamic actuation linkage is engaged relative to said outside door handle so that said motor vehicle door can be opened by said outside door handle.

4. Motor vehicle door lock as claimed in claim 1, wherein said control disk is coupled to a mechanical actuating means.

5. Motor vehicle door lock as claimed in claim 4, wherein said mechanical actuating means is coupled to an electrical drive motor.

6. Motor vehicle door lock as claimed in claim 1, wherein said control disk further includes a drive cam which interacts with said control segment of said dynamic actuation linkage so as to lift said detent pawl and thereby provide a motorized opening function.

7. Motor vehicle door lock as claimed in claim 6, wherein said control cams and said drive cam are arranged on said control disk in different axial planes corresponding to different planes in which a pair of actuating elements of said control segment of said dynamic actuation linkage are located so as to engage one or both of said actuating elements.

8. Motor vehicle door lock as claimed in claim 1, wherein said detent pawl is connected to a trigger element which extends into said control segment;

wherein a first actuating element of said control segment is connected to the outside door handle and a second actuating element of said control segment is connected to the inside door handle; and

wherein said continuous dynamic actuation linkage is engaged with the door handles by engagement of the actuating elements with said trigger element.

9. Motor vehicle door lock as claimed in claim 8, wherein said detent pawl is actuated by a displacement motion in a lengthwise direction of said trigger element;

and of said control segment wherein said first and second actuating elements and said trigger element are caused to be engaged with one another by a motion of said first and second actuating elements transversely to the lengthwise direction.

10. Motor vehicle door lock as claimed in claim 8, wherein said trigger element and said first and second actuating elements are made as rods provided with rows of teeth facing one another which are normally disengaged from one another and which are engaged with one another by the cams of said control disk against a reset force.

11. Motor vehicle door lock as claimed in claim 10, wherein said trigger element further includes a stop for a drive cam.

12. Motor vehicle door lock as claimed in claim 11, wherein said stop is provided between said rows of teeth on said trigger element.

13. Motor vehicle door lock as claimed in claim 8, wherein at least one of said trigger element, said first actuating element and said second actuating element is made of plastic.

14. Motor vehicle door lock as claimed in claim 8, wherein at least one of said trigger element, said first actuating element and said second actuating element is made of metal.

15. Motor vehicle door lock as claimed in claim 8, wherein said control segment includes an emergency trigger means which, in case of an emergency, operates to engage said dynamic actuation linkage such that said motor vehicle door lock operates as in the unlocked functional position.

16. Motor vehicle door lock as claimed in claim 15, wherein said emergency trigger means includes a thrustor which is actuatable by an actuating means.

17. Motor vehicle door lock as claimed in claim 15, wherein said emergency trigger means further comprises an acceleration responsive crash switch which is triggered when acceleration forces exceeding a predetermined level one experienced.

18. Motor vehicle door lock claimed in claim 15, wherein said emergency trigger means comprises an actuating element rocker which causes said rows of teeth on said trigger means to engage a row of teeth on each of said first and second actuating elements.