Lock for a motor vehicle
A motor vehicle, in particular a side door lock, comprising a locking mechanism leaving a rotary latch and at least one locking pawl, an actuating lever chain with at least one actuating lever and a release lever, wherein a blocked locking mechanism can be unblocked by means of the release lever, and a coupling element between the actuating lever and the release lever, wherein the coupling element can be actuated by means of a mass inertia element which is mounted in the motor vehicle lock, and wherein the mass inertia element can be stored in the motor vehicle lock by means of a plastic mandrel.
1. A lock for a motor vehicle, the lock comprising:
a housing,
an actuating lever chain with at least one actuating lever, wherein the actuating lever chain is configured to unblock a locking mechanism of the motor vehicle from a blocked position,
a mass inertia element which is mounted in the lock, and
a plastic pin that is engageable between the actuating lever and the mass inertia element, wherein the mass inertia element is mounted in the motor vehicle lock via the plastic pin,
wherein:
the plastic pin includes a cylindrical extension,
a portion of the cylindrical extension extends through a wall of the housing and out of the housing,
in a first configuration, the portion of the cylindrical extension is a first shape,
the first shape is cylindrical and is movable with respect to the wall of the housing to move into and out of the housing,
the plastic pin is modified from the first configuration to a second configuration, and in the second configuration, the portion of the cylindrical extension is a second shape to fasten the plastic pin to an exterior of the housing to prevent movement of the cylindrical extension with respect to the housing,
the exterior surface of the housing includes a bevel,
the second shape is a rivet head shape that engages with the bevel,
the plastic pin has a joining surface for receiving the mass inertia element, and
the housing includes a cylindrical protuberance and the cylindrical extension is configured to extend through the protuberance in the first and second configuration, wherein a first side of the joining surface engages the protuberance to act as a stop surface to prevent further extension of the cylindrical extension out of the housing, and wherein the mass inertia element is mounted on a second side of the joining surface, wherein the first side is opposite the second side.
2. The lock for the motor vehicle according to claim 1 , wherein the portion of the cylindrical extension that extends through the housing is reshaped by ultrasonically welding.
3. The lock for the motor vehicle according to claim 1 , wherein the plastic pin is connected to the mass inertia element in a force-fitting, form-fitting or material-fitting manner.
4. The lock for the motor vehicle according to claim 1 , wherein the mass inertia element has at least one recess corresponding to the plastic pin.
5. The lock for the motor vehicle according to claim 1 , wherein the plastic pin passes through the mass inertia element.
6. The lock for the motor vehicle according to claim 1 , wherein the plastic pin is locked with the mass inertia element via a bayonet catch.
7. The lock for the motor vehicle according to claim 1 , wherein the mass inertia element is at least partially made from a plastic material.
8. The lock for the motor vehicle according to claim 1 , wherein the plastic pin is formed as one piece as a one-piece plastic injection molded part.
9. The lock for the motor vehicle according to claim 1 , wherein the joining surface is configured so that a spring bias is introduced into the mass inertia element.
10. The lock for the motor vehicle according to claim 9 , wherein the spring bias is introduced into the mass inertia element by at least one bracket formed in the joining surface.
11. The lock for the motor vehicle according to claim 10 , wherein the at least one bracket includes at least two brackets that are inserted symmetrically into the joining surface.
12. The lock for the motor vehicle according to claim 10 , wherein the at least one bracket extends radially outward in the joining surface starting from a central axis.
13. The lock for the motor vehicle according to claim 10 , wherein the at least one bracket has a radius at least in a region of a contact surface on the mass inertia element.
14. The lock for the motor vehicle according to claim 13 , wherein the at least one bracket is configured to have a spherical shape to reduce an area of the contact surface.
15. The lock for the motor vehicle according to claim 13 , wherein the region of the contact surface is formed as a line or point contact between the at least one bracket and the mass inertia element.
16. The lock for the motor vehicle according to claim 1 , wherein the plastic pin has a thickened portion that extends into an extension of an opening in the housing.
17. The lock for the motor vehicle according to claim 1 , wherein the housing includes a lower portion and an upper portion opposite the lower portion, wherein a first portion of the cylindrical extension extends through the lower portion of the housing in the first configuration, and wherein a second portion of the cylindrical extension extends through the upper portion of the housing in the first configuration.
18. A lock for a motor vehicle, the lock comprising:
a housing,
an actuating lever chain with at least one actuating lever, wherein the actuating lever chain is configured to unblock a locking mechanism of the motor vehicle from a blocked position,
a mass inertia element which is mounted in the lock, and
a plastic pin that is engageable between the actuating lever and the mass inertia element, wherein the mass inertia element is mounted in the motor vehicle lock via the plastic pin,
wherein:
the plastic pin includes a cylindrical extension,
a portion of the cylindrical extension extends through a wall of the housing and out of the housing,
in a first configuration, the portion of the cylindrical extension is a first shape,
the first shape is cylindrical and is movable with respect to the wall of the housing to move into and out of the housing,
the plastic pin is modified from the first configuration to a second configuration, and in the second configuration, the portion of the cylindrical extension is a second shape to fasten the plastic pin to an exterior of the housing to prevent movement of the cylindrical extension with respect to the housing,
the exterior surface of the housing includes a bevel,
the second shape is a rivet head shape that engages with the bevel,
the plastic pin has a joining surface, wherein the joining surface is configured so that a spring bias is introduced into the mass inertia element, and
the spring bias is introduced into the mass inertia element by at least one bracket formed in the joining surface.