DE102008008177A1 - Locking system for locking door of vehicle, has actuation unit e.g. opening cam and guide rail, actuating ratchet during opening process such that opening stroke of ratchet is limited, and opening speed of ratchet is presettable - Google Patents

Abstract

The system (1) has a rotary catch (2) locked at a closed condition of a vehicle door by a ratchet (4). An actuation unit (5) e.g. opening cam (5.1) and guide rail (5.2), actuates the ratchet during an opening process such that opening stroke of the ratchet is limited, and opening speed of the ratchet is presettable. An electric motor or a mechanical device is provided for driving the actuation unit, and the ratchet is rotated by a ratchet bearing (4.1). The ratchet is fastened to a lock plate by a spring, which causes a spring force (Ff1) directed towards the rotary catch.

Description

The The invention relates to a locking system for a Vehicle in which a rotary latch in the closed state of a Vehicle door is lockable by a pawl.

From the DE 10 2007 045 228.6 is a vehicle door lock (hereinafter also called locking system) is known in which engages when closing the vehicle door, a catch in a locking bolt, wherein the rotary latch is locked in the closed state of the vehicle door by a locking device and is supported on the locking bolt. The locking device is formed from two pawls, wherein a first pawl of a second pawl is lockable. When opening the vehicle door by means of a door handle, a torque in the second pawl for releasing the first pawl can be introduced, wherein a further torque in the first pawl for releasing the rotary latch can be introduced.

Of the Invention is based on the object, an improved locking system indicate for a vehicle, which in particular simple and is inexpensive to produce.

The Task is according to the invention with a locking system having dissolved, which has the features specified in claim 1.

advantageous Embodiments of the invention are the subject of the dependent claims.

at the locking system according to the invention for a vehicle is a rotary latch in the closed state of a vehicle door Lockable by a pawl. According to the invention an actuating means is provided which the pawl operated in an opening operation such that an opening path of the pawl limited and an opening speed the pawl is predetermined.

Thereby is advantageously with a small material and it following a low cost a quiet opening noise achieved even at high door seal preloads. Farther is due to a low material load a reduced wear and thus increased reliability of the locking system achievable.

embodiments The invention will be described in more detail below with reference to drawings explained.

there demonstrate:

1A schematically a locking system for a vehicle in a closed state,

1B schematically the locking system according to 1A with partially opened pawl,

1C schematically the locking system according to 1A with partially opened pawl, and

1D schematically the locking system according to 1A with fully open pawl.

each other corresponding parts are in all figures with the same reference numerals Mistake.

In the 1A to 1D is a locking system 1 shown for a vehicle in different states. In a closing operation of a vehicle door, not shown, a catch engages 2 in a, in particular fastened to the vehicle locking bolt 3 one is turned and in one in 1A illustrated closed state of the vehicle door by means of a pawl 4 locked.

The pawl 4 is about a pawl bearing 4.1 rotatably and secured by a spring not shown on a lock plate, not shown. The spring causes one in the direction of the catch 2 directed spring force F _F1 and thus a torque M ₁ .

In the closed state of the vehicle door acts a door sealing force F _T , which results from a bias of a door rubber, not shown, on a first bearing surface A _{1 of} the rotary latch 2 on the locking bolt 4 and generates a torque M ₂ at the by means of a rotary latch bearing 2.1 rotatably mounted rotary latch 2 ,

At the catch 2 Furthermore, a second bearing surface A _{2 is} formed so that a pre-locking position can be realized during a closing operation of the vehicle door. The pre-locking position causes, in a closing operation of the vehicle door with too little force supply and the resulting incomplete closing the catch 2 by means of the pawl 4 is held on the second bearing surface A ₂ .

Thereby is advantageously an accidental opening of the vehicle door, for example, when cornering, preventable if the incomplete Closing the vehicle door goes unnoticed.

The catch 2 is in one embodiment of the invention by means of a spring, not shown, a spring force F _F2 in the opening direction, ie in the direction of the first support surface A ₁ , can be fed.

The catch 2 is supported in the closed state on a third bearing surface A ₃ on the pawl 4 from, whereby a supporting force F _S acts on the third bearing surface A ₃ .

Furthermore, an actuating means 5 provided, which in an opening operation, the pawl 4 actuated in such a way, ie in particular pulls out of the rotary latch in the direction X, that the catch 2 is released. The actuating means 5 is in the illustrated embodiment of the invention as an opening cam 5.1 educated.

To open the locking system 1 is the opening cam 5.1 For example, mechanically by means of a door handle, not shown, or motor by means of an electric motor also not shown a force supplied, which causes a torque M ₃ .

In the course of the opening process is the opening cam 5.1 according to 1B clockwise over a bearing 5.3 rotatable so that the pawl 4 in the X direction out of the catch 2 is pulled, wherein acting on the third bearing surface A ₃ static friction F _{R is} overcome.

To a movement of the pawl 4 is at this a pawl pin 4.2 arranged. To a guide of this pawl pin 4.2 has the actuating means 5 ie the opening cam 5.1 a guide rail 5.2 on, which by a material recess in the opening cam 5.1 is introduced.

In the closed state according to 1A and in the partially open state of the pawl 4 according to 1B this is supported by the pawl pin 4.2 on a first support surface S ₁ , so that a movement of the pawl 4 in the direction X against the spring force F _F1 can be introduced.

The pawl 4 is then based on a further rotation of the opening cam 5.1 continue to move in the direction of X until the catch 2 according to 1C only on a corner radius R on the pawl 4 supported. By acting perpendicular to the support surface A ₃ door seal force F _T and the spring force F _F2 is an acceleration force F _a in the pawl 4 initiated in the direction of X.

Because the pawl 4 however, in the direction X of a second support surface S _{2 of} the guide rail 5.2 is supported, the arrangement of the acceleration force F _a counteracts, an opening path and an opening speed of the pawl 4 limited or predetermined.

Thus, the pawl 4 kept secured in the X direction and the catch 2 is released, leaving the locking system 1 is open.

Due to the limited opening travel and the predefinable opening speed is a "lifting" of the pawl 4 from the first support surface S ₁ and a later "whipping" on this avoidable, resulting in a reduction of the opening noise and wear of the locking system 1 leads.

In a non-illustrated embodiment of the invention is an opening speed, with which the actuating means 5 is rotatable, so specifiable that abrupt movements of the pawl 4 Already at the beginning of the opening process are avoidable to the opening noise and wear of the locking system 1 continue to minimize.

The actuating means 5 is driven by means of an electric motor, not shown, or a mechanical device, such as a door handle.

According to a meaningful continuation of the invention is the predetermined speed when using the mechanical device for actuating the actuating means 5 for example, by a spring-loaded mounting of the opening cam 5.1 executable, wherein a spring force not shown on the opening cam 5.1 the spring force F _F2 on the rotary latch 2 counteracts.

at a use of the electric motor is the opening speed through this controllable and preferably in a no closer stored control unit stored.

1

locking

2

catch

2.1

Rotary latch bearing

3

locking pin

4

pawl

4.1

Pawl camp

4.2

Latch bolt

5

actuating means

5.1

opening cam

5.2

guide rail

5.3

camp

A ₁

First bearing surface

A ₂

Second bearing surface

A ₃

third bearing surface

F _a

accelerating force

F _F1

spring force

F _F2

spring force

F _R

stiction

F _S

supporting force

F _T

Door seal force

M ₁

torque

M ₂

torque

M ₃

torque

R

corner radius

X

direction

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102007045228 [0002]

Claims (4)

Locking system ( 1 ) for a vehicle in which a rotary latch ( 2 ) in the closed state of a vehicle door by a pawl ( 4 ) is lockable, characterized in that an actuating means ( 5 ) is provided, which the pawl ( 4 ) is operated in an opening operation such that an opening path of the pawl ( 4 ) and an opening speed of the pawl ( 4 ) can be specified. Locking system ( 1 ) according to claim 1, characterized in that the actuating means ( 5 ) an opening cam ( 5.1 ). Locking system ( 1 ) according to claim 1 or 2, characterized in that the actuating means ( 5 ) a guide rail ( 5.2 ) having. Locking system ( 1 ) according to one of claims 1 to 3, characterized in that for driving the actuating means ( 5 ) An electric motor or a mechanical device is provided.