Loading patent…
AssigneeKiekert AG
InventorsThorsten BENDEL, Werner POHLE, Thomas WALDMANN
Estimating the term…
In order to minimize the sliding friction between the locking parts that is, between the pawl and the rotary latch of a motor vehicle lock, it is advantageous if, during the production process, the different latch surfaces of both locking parts are provided with a stamping contour having straight grooves and with a stamping contour characterized in that the provided grooves are oblique. Said oblique grooves of the latch surface on the pawl are placed in the position indicated in figure such that the entire pawl is twisted about the longitudinal axis thereof. Also, at least two overlapping points are provided between the straight grooves and the oblique grooves such that both of the locking parts come into mutual contact reducing the friction.
Method for producing the locking parts catch and pawl of a motor vehicle door lock, in which the catch and pawl are stamped, resulting in vertical or near vertical edges with corresponding ratchet surfaces on the pawl and catch, which are then covered by a coating except for latching surfaces, characterized in that after stamping of the locking parts one part is twisted by a specified angle in an area which would otherwise be engaged with a stamping contour of the other locking part by means of grooves arranged parallel to each other.
Motor vehicle door latch with a catch and a pawl locking the catch when the motor vehicle door is closed, in which both locking parts contain corresponding ratchet surfaces on the vertical edges created during stamping and a coating except for on the ratchet surfaces, characterized in that the locking part contains a ratchet surface with a stamping contour whose straight grooves are obliquely arranged in relation to the straight grooves of the other locking part as a result of the twisting of the locking part or act as oblique grooves.
Dependencies are inferred from the claim text.