EP3063351B1 - Motor vehicle door closure - Google Patents

Description

The invention relates to a motor vehicle door lock with a lock mounted on a lock plate, which comprises a rotary latch mounted on a rotation axis and at least one pawl mounted on a rotation axis for latching the catch, the lock plate being fastened to a door of the motor vehicle via openings arranged therein.

In the context of the invention, the door of a motor vehicle means doors which can be swiveled by means of hinges as well as rails which can be moved by means of rails, so-called sliding doors. However, the invention also includes in addition to doors in vehicles usual rear and boot flaps and hoods.

A motor vehicle lock, also referred to simply as a lock for a motor vehicle, comprises a locking mechanism with a rotary latch rotatably mounted on a rotation axis for receiving a lock holder arranged on the vehicle body body, which is often also called a locking bolt or lock bracket. The locking mechanism also has at least one pawl which is likewise rotatably mounted on an axis of rotation and by way of which the catch is latched for holding the retracted lock holder.

For retracting the lock holder into the catch of a motor vehicle door lock, the rotary latch has a lock holder inlet area formed by a load arm and a catching arm. The lock holder enters the inlet area when the corresponding door of the vehicle is closed. The catch is rotated after the impact of the lock holder on the tentacle from the open position to the closed position and locked there over the pawl. This position is called the main detent position. In this position, the power is transmitted from the door to the body by a power transmission from the rotary latch to the locking pin and indeed via the load arm of the rotary latch.

In an accident, or a vehicle collision, hereinafter also referred to as a so-called crash case, usually occur very suddenly very high forces, especially acceleration forces, which may be a multiple of the acceleration due to gravity. As a result, a corresponding lock including the locking mechanism and the associated lever mechanisms is exposed to considerable inertial forces, which can lead to an unwanted opening of the locking mechanism and consequently to an opening of the locking mechanism.

In the past, extensive measures have already been taken to prevent the occurrence of abnormal acceleration forces, i. H. in the event of a crash, prevent a lock operation or a locking mechanism opening.

So it is from the publication EP 01 518 983 A2 for preventing unscheduled opening of a lock in the event of a crash known to provide a locking lever which blocks a lock operation at excessive vehicle accelerations.

In the event of a crash, a rebound can occur on the excessive acceleration forces that are excessive on impact, which is also called bouncing in professional circles. By a delayed and repeated rebound, in particular associated with changes in the acceleration forces and directions, it can also come at very high acceleration forces to a failure of the locking mechanism, which should actually avoid an unplanned opening in the event of a crash.

In this context, the lock attachment to the vehicle body body is of increased importance, in particular the lock attachment in connection with the storage of the locking pawl and rotary latch.

Motor vehicle locks are usually connected via the lock plate overlapping metal lock plate via mounting openings with threaded recess with the respective door by screwing. As a rule, locks, depending on the stop side of the door, attached to a door front.

From the publication DE 103 08 369 B4 It is known to attach the locking plate overlapping the lock plate as possible over openings arranged close to the lock plate edge, in which case attachment to the door front side is also effected by fixing to the door longitudinal side facing the vehicle interior when driving.

From the publication DE 38 09 317 A1 it is known to achieve favorable power conditions in the attachment of a lock, the mounting holes, here four, and put the locking rotary axes in a plane. The forces occurring are absorbed by the axes of rotation of pawl and rotary latch and delivered via the mounting holes on screws or bolts to the supporting parts of the vehicle door.

A lock attachment to a corresponding end wall of a motor vehicle door can also be done via three attachment openings located as close as possible to the lock plate edge.

In the past, in the constructive determination of the position of the fastening openings, the lock fastening and the actual protection of the fastening openings in the corresponding door or flap were in the foreground.

US 2011 0 133 493 A1 describes a motor vehicle door lock according to the preamble of the independent claim. In this vehicle door latch, the ratio of the distance between the centers of the second and third attachment holes to the distance between the centers of the first and second attachment holes is 0.32 and intersects a straight line between the axes of rotation centers and a straight line between the first and third attachment holes with an apex angle of 9 °.

US 2006 0 119 109 A1 . GB 2 379 954 A . US 2012 0 056 437 A1 . WO 2013 105 408 A1 . EP 2 538 002 A1 . DE 20 2005 020 452 U1 . US 4,235,462 . US 5,758,912 A . WO 2012 056 869 A1 describe in each case a motor vehicle door lock, which is similar to the motor vehicle door lock according to the preamble of the independent claim, but in which, unlike the motor vehicle door lock according to the preamble of the independent claim in the installed state, the pawl is disposed below the rotary latch and in the installed state, the second and third mounting hole in the area below the first axis of rotation are arranged.

US 2006 0 119 109 A1 describes that the ratio of the distance between the centers of the second and third attachment opening to the distance between the centers of the first and second attachment opening is 0.57 and a straight line between the axes of rotation axes and a straight line between the first and third attachment openings with a vertex angle of Cross 20 °.

GB 2 379 954 A describes that the ratio of the distance of the centers of the second and third attachment opening to the distance of the centers of the first and second attachment openings is 0.46 and a straight line between the axes of rotation centers and a straight line between the first and third attachment openings with a vertex angle of Cross 55 °.

US 2012 0 056 437 A1 describes that the ratio of the distance of the centers of the second and third attachment opening to the distance of the centers of the first and second attachment openings is 0.49 and a straight line between the axes of rotation centers and a straight line between the first and third attachment openings with a vertex angle of Cross 53 °.

WO 2013 105 408 A1 describes that the ratio of the distance of the centers of the second and third attachment opening to the distance of the centers of the first and second attachment openings is 0.49 and a straight line between the axes of rotation centers and a straight line between the first and third attachment openings with a vertex angle of 57 °.

EP 2 538 002 A1 describes that the ratio of the distance of the centers of the second and third attachment opening to the distance of the centers of the first and second attachment openings is 0.49 and a straight line between the axes of rotation centers and a straight line between the first and third attachment openings with a vertex angle of Cross 65 °.

DE 20 2005 020 452 U1 describes that the ratio of the distance of the centers of the second and third attachment opening to the distance of the centers of the first and second attachment openings is 0.44 and a straight line between the axes of rotation axes and a straight line between the first and third attachment openings with a vertex angle of cross about 1 °.

US 4,235,462 describes that the ratio of the distance between the centers of the second and third attachment opening to the distance between the centers of the first and second attachment opening is 0.57 and a straight line between the axes of rotation axes and a straight line between the first and third attachment openings with a vertex angle of Cross 24 °.

US 5,758,912 A describes that the ratio of the distance of the centers of the second and third attachment opening to the distance of the centers of the first and second attachment opening is 0.60 and a straight line between the axes of rotation centers and a straight line between the first and third attachment opening with a vertex angle of 22 °.

WO 2012 056 869 A1 describes that the ratio of the distance between the centers of the second and third attachment opening to the distance between the centers of the first and second attachment openings is 0.48 and a straight line between the axes of rotation axes and a straight line between the first and third attachment openings with a vertex angle of Cross 63 °.

Against this background, the invention proposes the subject matter of the independent claim. Advantageous embodiments of the invention are described in the dependent claims.

• einem auf einer Schlossplatte gelagerten Gesperre, das eine auf einer zweiten Drehachse gelagerte Drehfalle und mindestens eine auf einer ersten Drehachse gelagerte Sperrklinke zum Verrasten der Drehfalle umfasst,
  wobei
• die Schlossplatte über darin angeordnete Befestigungsöffnungen an einer Tür oder Klappe des Kraftfahrzeuges befestigt wird,
• im Einbauzustand die Sperrklinke oberhalb der Drehfalle angeordnet ist,
• die Schlossplatte mindestens drei Befestigungsöffnungen zum Befestigen aufweist, von denen im Einbauzustand eine zweite und dritte Befestigungsöffnung im Bereich oberhalb der ersten Drehachse angeordnet sind und eine erste Befestigungsöffnung im Bereich der zweiten Drehachse angeordnet ist,
• die drei Befestigungsöffnungen in sich ein spitzwinkliges Dreieck mit einem spitzen Winkel von kleiner 30° an der ersten Befestigungsöffnung einschließen,
• sich die erste und zweite Befestigungsöffnung auf der Seite des Schlosshalter-Einlaufbereichs der Drehfalle befinden,
• das Verhältnis des Abstandes der Mittelpunkte der zweiten und dritten Befestigungsöffnungen zu dem Abstand der Mittelpunkte der ersten und zweiten Befestigungsöffnungen ca. 0,4, nämlich von 0,35 bis 0,45 beträgt,
• sich eine Gerade zwischen den Drehachsen-Mittelpunkten und eine Gerade zwischen den ersten und dritten Befestigungsöffnungen mit einem Scheitelwinkel von ca. 30° kreuzen.

The invention proposes a motor vehicle door lock, with

• a ratchet mounted on a lock plate and comprising a ratchet mounted on a second axis of rotation and at least one pawl mounted on a first axis of rotation for latching the ratchet;
  in which
• the lock plate is fastened to a door or flap of the motor vehicle via fastening openings arranged therein;
• in the installed state, the pawl is arranged above the rotary latch,
• the lock plate has at least three fastening openings for fastening, of which in the installed state a second and third fastening opening are arranged in the region above the first axis of rotation and a first fastening opening is arranged in the region of the second axis of rotation,
• the three mounting holes include an acute-angled triangle at an acute angle of less than 30 ° at the first mounting hole,
• the first and second attachment openings are located on the side of the lock holder inlet region of the catch,
• the ratio of the distance between the centers of the second and third attachment openings to the distance between the centers of the first and second attachment openings is approximately 0.4, namely from 0.35 to 0.45,
• a straight line between the axes of rotation centers and a straight line between the first and third mounting openings with a vertex angle of about 30 ° intersect.

With such, defined by the triangle design in the arc with specific angles ratio of the arrangement of the mounting holes to each other optimal stability of the lock is achieved in the installed state, at the same time the bearings of the locking pawl and catch on their axes of rotation in the mounted state of the motor vehicle lock on a corresponding Door or flap can be protected in an advantageous manner in a crash case.

According to the invention, it is provided that there are two fastening openings on the side of the lock holder inlet region of the rotary latch.

By such an arrangement ratio of the attachment openings, a high stability of the lock when entering the lock holder, more precisely achieved on impact of the lock holder on the tentacle of the rotary latch. With this arrangement, improvements for the castle acoustics when closing a door or flap equipped therewith are achieved in connection with the other structural details.

According to the invention, the ratio of the distance between the center points of the attachment openings located above the axis of rotation of the pawl to the distance between the centers of the attachment openings located on the side of the lock holder area is approximately 0.4.

The inventive special ratio of the position of the Anschraubpunkte in the region of the axis of rotation of the pawl and the axis of rotation of the rotary latch with each other, the above-mentioned additional protection of the bearings of the locking parts pawl and rotary latch is further optimized.

According to the invention, it is provided that a straight line between the axes of rotation of the locking pawl and rotary latch and a straight line between the attachment opening on the rotary latch and the clockwise direction on the pawl front attachment opening with a vertex angle of about 30 ° intersect.

As a result, the ratio of the position of the Anschraubpunkte is optimized for the position of the axes of rotation of the locking parts pawl and rotary latch in the direction of a higher lock stability and an optimum in terms of desired lock stability is achieved in the event of a crash.

In a preferred embodiment of the invention it is provided that the acute angle at the attachment opening of the axis of rotation of the rotary latch is 23 ° -29 °, preferably 26 °.

With such a specified angle configuration, an optimum degree of stability for the motor vehicle door lock is achieved with the fastening according to the invention. It can even meet exactly three mounting holes.

In a further preferred embodiment, it is provided that the at least three attachment openings are arranged approximately on a circular path created with a radius of 30 mm-36 mm, preferably 33 mm.

With such further specification of the arrangement of the position of the attachment openings, the degree of stability for three attachment openings is further optimized.

In a further particular embodiment of the invention, the respective distances between the perpendicular through the centers of the mounting holes and the perpendicular through the centers of rotation axes of the pawl and the catch maximum 18 mm.

By this compared to the prior art, in which rather the edge areas of the lock plate are preferred as to the arrangement of the mounting holes, with the specified arrangement of the mounting holes in the vicinity of the pivot axes bearing points of the locking pawl and catch a particularly positive effect on the Tensile strength of the motor vehicle door lock achieved in the event of a crash. It succeeds in recording the forces introduced via the lock holder from the vehicle body into the locking mechanism in the event of a crash on "short paths".

A further particular embodiment of the invention provides that the distances between the horizontal through the centers of the mounting holes in the region of the pawl and the horizontal through the center of the axis of rotation of the pawl amount to a maximum of 14 mm.

As a result, a further optimization of the tensile strength in the region of the pawl bearing in the event of a crash is achieved, via the horizontal plane of the lock plate.

Another particular embodiment of the invention provides that the distance between the horizontal through the center of the mounting hole on the rotary latch and the horizontal through the center of the axis of rotation of the rotary latch is a maximum of 12 mm.

As a result, a further optimization of the tensile strength in the area of rotary lash - storage in the event of a crash is achieved, here About the horizontal. - Level of the lock plate in the area of the rotary latches - Storage.

Finally sel sel mentioned that the mounting holes are designed to screw the motor vehicle door lock with a door or flap of a vehicle as chamfered holes with Gewindeihschnitt. With such a fastening by screwing an optimal connection to the corresponding door or flap of the vehicle is achieved both in terms of stability and in terms of aesthetics.

• Figur 1: Die Anschraubpunkte an der Stirnseite einer Kraftfahrzeugfür
• Figur 2: Den Kraftfahrzeugtürverschluss in Aufsicht

The invention is explained in more detail below with reference to an exemplary embodiment. The two figures show:

• FIG. 1 : The attachment points on the front side of a motor vehiclefor
• FIG. 2 : The motor vehicle door lock in supervision

FIG. 1 shows a motor vehicle 2 with a top hinges filed. On the front side 4 of the side door 3, as in motor vehicles 2, the motor vehicle door lock 1 arranged substantially inside the side door 3 is only schematically visible via its attachment points ABC and the lock holder inlet region 5. The lock holder 6 itself is located on the body pillar 7. The lock is screwed into the lock plate 10 threaded cuts on the mounting holes ABC on the front side 4 with the side door 3 with screws not shown here. However, it is also within the scope of the invention to be fastened using ABC bolts to be riveted, for example. For completeness, it should be mentioned that the lock 1 is actuated from the outside via a door handle 8.

The FIG. 2 shows the motor vehicle door lock 1 in the view without lock cover from the door interior. On the only schematically indicated, arranged in a lock housing, not shown lock plate 10, the locking mechanism 12, 14 of pawl 12 and rotary latch 14 is visible, wherein the pawl 12 are rotatably mounted about a rotation axis 11 and the rotary latch 14 via a rotation axis 13. The lock holder 6 is fully retracted into the bowl holder formed from rotary traps - catch arm 14.1 and rotary traps - load arm 14.2 - inlet region 5 of the rotary catch 13. The rotary latch 14 is latched to the pawl 12, so that the locking mechanism 12, 14 is in the Hauptrdstposition 15.

Only for a better understanding is explained, that when pressing a in the FIG. 2 not shown lock actuating lever, z. B. the door handle 8, the pawl 12 spring-loaded in a counterclockwise direction - would move out of the main catch position 15 and thus the spring-loaded, catch 14 would also pivot in the counterclockwise direction in the open position.

With A, B and C three mounting holes in the lock plate 10 of the motor vehicle door lock I are seconded. Preferably, the three attachment openings are arranged on a Z-shaped with radius R circular path K, wherein the radius. R is 30 mm - 36 mm, preferably 33 mm. When the mounting holes are chamfered and each equipped with a threaded section of a preferably M 12 thread holes. The Screwing is usually done from the outside above the door - front page 4.

With such, with a - defined as acute triangle defined relationship of the arrangement of the mounting holes A, B and C to each other an optimal stability of the castle is initially achieved in the installed state, preferably with an acute angle Ω at the mounting hole A in the vicinity of Rotary axis 13 of the rotary latch 14 of less than 30 °, especially between 23 ° and 29 °, especially of 26 °. The optimum distance x between the centers of the fastening openings B and C has been found to be 25 to 29 mm, preferably approximately 27 mm, and the center points of the fastening openings A and B are preferably 62 mm to 66 mm, particularly preferably approx. 64 mm apart, resulting in the preferred aspect ratio x; y from 0.35 to 0.45, that is about 0.4.

Thus at the same time the lock fastening A, B and. C an optimal protection of the locking - rotation axes 11, 13 and thus an increased tensile strength can be generated for the lock 1, a locking - rotary axis - arrangements 11, 13 has been found to be preferred in which the connection of the centers of the axes of rotation 12, 14 and the connection of the centers of the mounting holes. A and C with a vertex angle a of less than 35 °, preferably 30 ° cross.

Particularly preferred over the prior art, in the invention, an optimized proximity of the mounting holes A, B and C to the axes of rotation 11, 13 of the locking mechanism 12, 14 has been found.

Thus, the motor vehicle door lock 1 according to the invention preferably has a maximum distance z1-z4 between the vertical through the centers of the fastening openings A, B and C and the vertical through the centers of the axes of rotation 11, 13 of pawl 12 and rotary latch 14 of a maximum of only 18 mm. For the distance z1 about 9.5 mm, the distance z2 about 17.5 mm (in particular 16.5 mm to 18.5 mm), the distance z3 about 18 mm (in particular 17 mm to 15 mm) and the distance z4 about 15 mm (especially 14 mm to 16 mm) exposed.

For the distances b, c between the horizontal through the centers of the mounting hole B, C to the horizontal through the axis of rotation 12 of the pawl 11, an optimum value of maximum 14 mm has been found, with a particularly preferred embodiment according to the FIG. 2 Values for b of 12 mm and for c of 13.5 mm.

Finally, the determination of the distance a between the horizontal remains through the center of the mounting hole A and the horizontal through the axis of rotation 13 of the rotary latch 14. Here are optimal values for distances of up to 12 mm, the concrete case according to the figure 11 mm having.

LIST OF REFERENCE NUMBERS

• 1: Motor vehicle closure
• 2: motor vehicle
• 3: Motor vehicle pages for
• 4: door - front side
• 5: Lock holder - inlet area
• 6: lock holder
• 7: body pillar
• 8: door handle
• 10: lock plate
• 11: rotation axis pawl
• 12: pawl
• 13: rotation axis catch
• 14: catch
• 14.1: catching arm
• 14.2: load arm
• 15: Main rest position
• A mounting hole
• B mounting hole
• C mounting hole
• K circular arc
• R radius
• a distance
• b distance
• c distance
• z1 - z4 distances
• x distance
• y distance
• α angle
• Ω angle

Claims (7)

1. Motor vehicle door latch (1) with

   • a locking mechanism accommodated on a latch plate (10) encompassing a catch (14) accommodated on a second rotational axis (13) and at least one pawl (12) accommodated on a first rotational axis (11) to ratchet the catch (14),
   whereby

   • the latch plate is affixed by means of affixing apertures (A, B, C) arranged on a door (3) or a flap of the motor vehicle (2),

   • in the installation state, the pawl (12) is arranged above the catch (14),

   • the latch plate (10) has at least three affixing apertures (A, B, C) for affixing, of which a second and third affixing aperture (B, C) are arranged in the area above the first rotational axis (11) and a first affixing aperture (A) is arranged in the area of the second rotational axis (13),

   • the three affixing apertures (A, B, C) include an acute-angled triangle with an acute angle (Ω) of less than 30° on the first affixing aperture (A),

   • the first and second affixing apertures (A, B) are located on the side of the latch holder infeed section (5) of the catch (14), characterized in that

   • the ratio of the distance (x) of the central points of the second and third affixing apertures (B, C) to the distance (y) of the central points of the first and second affixing aperture (A, B) is approximately 0.4,

   • a straight line between the central points of the rotational axes (11, 13) and a straight line between the first and third affixing aperture (A, C) cross with a vertical angle (α) of approximately 30°.
2. Motor vehicle door latch (1) according to claim 1, characterized in that

   • the angle (Ω) on the first affixing aperture (A) is 23° - 29°, preferably 26°.
3. Motor vehicle door latch (1) according to one of the previous claims, characterized in that

   • the three affixing apertures (A, B, C) are approximately arranged on an orbit created with a radius of 30 mm - 36 mm, preferably 33 mm.
4. Motor vehicle door latch (1) according to one of the previous claims, characterized in that

   • the distances z1 - z4 between the vertical lines through the central points of the three affixing apertures (A, B, C) and the vertical lines through the central points of the rotational axes (11, 13) are a maximum of 18 mm.
5. Motor vehicle door latch (1) according to one of the previous claims, characterized in that

   • the distances (b, c) between the horizontal lines through the central points of the second and third affixing apertures (B, C) and through the central point of the horizontal lines through the first rotational axis (11) are a maximum of 14 mm.
6. Motor vehicle door latch (1) according to one of the previous claims, characterized in that

   • the distance (a) between the horizontal lines through the central point of the first affixing aperture (A) and the horizontal lines through the central point of the second rotational axis (13) are a maximum of 12 mm.
7. Motor vehicle door latch (1) according to one of the previous claims, characterized in that

   • the three affixing apertures (A, B, C) to screw the motor vehicle door latch (1) to a door (3) or a flap of a motor vehicle (2) are executed as chamfered holes (A, B, C) with a thread notch.

Images