Method for producing motor vehicle door locks with a rolling surface as a locking part contour

Patent metadata

Field	Value
Publication number	US-9810007-B2
Application number	US-201314650607-A
Country	US
Kind code	B2
Filing date	Dec 11, 2013
Priority date	Dec 12, 2012
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

The invention relates to a method for producing motor vehicle door locks with the locking parts: a rotary latch and a pawl. Said latch and the pawl are stamped from rolled sheet metal defining vertical or approximately vertical edges with corresponding latch surfaces on the rotary latch and the pawl, and subsequently are provided with a covering while maintaining the catch surfaces. After stamping, the locking parts are bent in the region of the main latch and/or another latch resulting in the formation a contour which is void of stamped channels, and are then inserted into the lock housing box.

First claim

The invention claimed is:

1. A motor vehicle latch made by the process comprising:
providing a stamped catch having a first free end, a first stamped side on the first free end, the first stamped side having stamping contours, and a first side surface adjacent to and perpendicular to the first stamped side, wherein the stamped catch is a first locking component and wherein the stamped catch defines a first ratchet surface on the first free end;
providing a stamped pawl which locks the stamped catch in the closed state, the stamped pawl having a second free end, a second stamped side on the second free end, the second stamped side having stamping contours and a second side surface adjacent to and perpendicular to the second stamped side, wherein the stamped pawl is a second locking component and wherein the stamped pawl defines a second ratchet surface on the second free end; and
bending one of the first or second locking components at its respective first or second free end thereby positioning the first or second side surface as the first or second ratchet surface that abuts the first or second ratchet surface of the other locking component.

2. Motor vehicle latch in accordance with claim 1 , wherein the first or second ratchet surface of the other locking component is the first or second stamped side having stamping contours.

3. Motor vehicle latch in accordance with claim 1 , wherein the pawl on the second free end is reduced in a thickness and the second free end is bent.

4. Motor vehicle latch in accordance with claim 1 , wherein the bent pawl or the catch demonstrate a rolled angular deflection at the first or second free end.

5. Motor vehicle latch in accordance with claim 1 , wherein bending the first or second locking component creates an angular deflection that has a slight crescent shape over its length.

6. Motor vehicle latch in accordance with claim 1 , wherein the pawl is assigned to a supplementary metal sheet which demonstrates a thickness which offsets the height of the angular deflection.

7. Motor vehicle latch in accordance with claim 2 , wherein the pawl is assigned to a supplementary metal sheet which demonstrates a thickness which offsets a height of the bent free end.

8. Motor vehicle latch in accordance with claim 3 , wherein the pawl is assigned to a supplementary metal sheet which demonstrates a thickness which offsets the height of the bent free end.

9. Motor vehicle latch in accordance with claim 4 , wherein the pawl is assigned to a supplementary metal sheet which demonstrates a thickness which offsets the height of the bent free end.

10. Motor vehicle latch in accordance with claim 5 , wherein the pawl is assigned to a supplementary metal sheet which demonstrates a thickness which offsets the height of the bent free end.

11. Motor vehicle latch in accordance with claim 1 , wherein the bending is at least 90 degrees.

12. Motor vehicle latch made in accordance with claim 1 , further comprising encasing the catch and pawl in a casing that leaves the first and second ratchet surfaces free.

13. Motor vehicle latch in accordance with claim 1 , wherein the stamping contour of the free end of the bent first or second locking component cannot abut the adjacent locking component.

14. Motor vehicle latch in accordance with claim 1 , wherein bending the free end of the first or second locking component positions a rolled surface against the free end of the adjacent other locking component.

15. Motor vehicle latch in accordance with claim 1 , wherein a first ratchet surface on the first or second locking component has a stamped contour and wherein a second ratchet surface on the other locking component is a rolled surface.

16. Motor vehicle latch in accordance with claim 1 , wherein the bending is at least 180 degrees.

17. Motor vehicle latch in accordance with claim 1 , wherein bending one of the first or second locking components at its respective first or second free end increases a height of the respective first or second free end that abuts the first or second ratchet surface of the other locking component.

18. Motor vehicle latch in accordance with claim 1 , wherein, before bending one of the first or second locking components at its respective first or second free end, a height of the respective first or second free end is narrower than the first or second ratchet surface of the other locking component.

19. Motor vehicle latch in accordance with claim 1 , wherein the bent first or second locking component is assigned to a supplementary metal sheet having a thickness that offsets the difference between a height of the bent free end and a thickness of the other locking component.

20. Motor vehicle latch in accordance with claim 19 , wherein a thickness of the first or second ratchet surface of the other locking component is equal to the height of the bent free end.

Assignees

• Kiekert Ag

Inventors

• Bendel Thorsten
• Pohle Werner
• Waldmann Thomas

Classifications

• E05B77/40

  Lock elements covered by silencing layers, e.g. coatings · CPC title

• E05B77/36

  Noise prevention; Anti-rattling means · CPC title

• E05B85/26

  Cooperation between bolts and detents · CPC title

• B21D53/38 Primary

  locksmith's goods, e.g. handles · CPC title

• E05B79/10

  Connections between movable lock parts · CPC title