CN102498255A

CN102498255A - Motor vehicle lock

Info

Publication number: CN102498255A
Application number: CN2010800384707A
Authority: CN
Inventors: H·席费尔
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2009-08-31
Filing date: 2010-08-27
Publication date: 2012-06-13
Anticipated expiration: 2030-08-27
Also published as: WO2011023179A3; CN102498255B; WO2011023179A2; DE102009029016A1

Abstract

The invention relates to a lock for a motor vehicle, comprising a locking mechanism having a large locking leverage ratio of 2.5 and more. The lock can have a compact design since the main latch of the locking mechanism is arranged on the load arm of the rotary latch of the locking mechanism.

Description

Motor vehicle lock

Technical field

The present invention relates to have the lock that is used for motor vehicle of characteristic of the preamble of claim 1, have blocking mechanism.

Background technology

The lock that beginning is mentioned comprises at least one lock case, and this lock case has the jam plate that is made of metal usually (being also referred to as the lock case) that is arranged in this lock case, and has the blocking mechanism that is bearing on this jam plate.Jam plate is typically provided with the slit entrance that is used to hold lock pin.Blocking mechanism comprises the rotary latch that is used to hold lock pin of rotatable supporting.Blocking mechanism also has the locking ratchet, rotary latch this locking ratchet kayser capable of using.

The rotary latch of motor vehicle lock generally has by load arm and the slit entrance of catching the fork-shaped that blocking arm forms, and the lock pin of motor vehicle door or lid (for example hood or luggage-boot lid) is at this door or cover and enter in this slit entrance when sealed.Therefore this lock pin makes rotary latch rotate to latched position from open position by means of catching blocking arm.If rotary latch has arrived latched position, then this rotary latch through locking ratchet kayser in this latched position.This lock pin no longer can leave the slit entrance of rotary latch, because this prevents through load arm.This latched position is called the main card lock position.

There is motor vehicle lock with second latched position (being so-called preparatory latched position).This preparatory latched position is used at corresponding door or covers blocking this corresponding door or lid under the situation that when sealed, does not arrive the main card lock position.

Therefore rotary latch is sealed fully in preparatory latched position, but the motion of opening of rotary latch stops through the locking ratchet.Therefore the zone that holds the locking ratchet in this position of rotary latch is also referred to as preparatory lock part.Final rotary latch is sealed fully at main card lock position quilt.This preparatory lock part thus be in open mode and the main card lock section between transition state and set for reasons of safety.

Know that by document DE 20 2,006 018 500 U1 in advance lock part and main card lock section are arranged on catching on the blocking arm of rotary latch, this catch blocking arm be rotary latch through lock pin from open position rotate to latched position by arm on.DE 199 32 291 A1 are open, and the lock part is arranged on the load arm in advance, and the main card lock section is arranged on catches on the blocking arm.10 2,008 063 489 suggestions of not disclosed in advance German patent application are arranged on main card lock section and lock part in advance on the load arm of rotary latch, and this load arm is the arm that when correspondingly sealed door or lid, produces hold facility.

In motor vehicle lock, be devoted to and enough very little power open this lock.In addition, depend on lever ratio for the power of opening required usefulness.Key is in the blocking mechanism of kayser, is first lever of physical action on the one hand, and its point of rotation from rotary latch roughly extends to the main card lock section; Be second lever of physical action on the other hand, its point of rotation from rotary latch roughly extends to the contact area between lock pin and the load arm.

Length ratio between first lever and second lever is called the closed block ratio.Because the lever rule, this closed block is bigger than more, and then lock can be got over easily and open.Traditional lock that is used for motor vehicle has the most about 2.0 closed block ratio usually.Judge that according to accompanying drawing this for example is applicable to the closed block ratio by the known lock of DE 199 32 291 A1.

Through the spacing between the point of rotation that strengthens main card lock section and rotary latch, in each lock, can easily strengthen 2.0 closed block ratio.But the structure space that this need correspondingly prolong load arm or catch blocking arm and need strengthen thus, this does not normally expect.

Summary of the invention

Therefore the object of the present invention is to provide a kind of lock that can open with very little power consumption, compact, that be used for motor vehicle.

This purpose is achieved through a kind of lock is provided, and it comprises blocking mechanism, and this blocking mechanism comprises the rotary latch that has load arm and catch blocking arm, and this rotary latch is rotatably mounted through the rotary latch axle, and this rotary latch can hold lock pin.This blocking mechanism also comprises the locking ratchet.The closed block of said blocking mechanism compares more than or equal to 2.5, is preferably greater than to equal 3.Said main card lock section is arranged on the load arm of rotary latch.

Said main card lock section operated by rotary motion is being caught on the blocking arm, more helps being positioned because catch blocking arm, with through locking ratchet kayser rotary latch.Understanding of the present invention is that load arm can be longer relatively, obtaining favourable closed block ratio, and need not so provide wide especially jam plate or wide especially lock case.

At this preferably, the width of jam plate is smaller or equal to 62mm.The jam plate width is provided by the width of lock case, promptly from a side of lock case slit entrance up to the lock case and the width opposed side of lock case slit entrance.Therefore the width of jam plate is parallel to the jam plate slit entrance and extends.Even when the closed block ratio equals 3, also easily realize the width of maximum 62mm through the present invention.

In another preferred embodiment, said locking ratchet is promptly asymmetricly rotatably mounted prejudicially at this.This means that the arm that is used to interlock of locking ratchet does not prolong above the locking pawl axis.And can have another locking pawl arm, leave its latched position for example to make the motion of locking ratchet thus.But this another arm thereby become to be not more than 90 ° angle with the upper-arm circumference of kayser.This geometry allows, and the axis of rotation of locking ratchet is provided with near the lock tank wall of side, and the jam plate width keeps very for a short time thus.This favourable structure is described in DE 10 2,008 063 489.

Preferably, the zone of the encirclement locking ratchet axis of rotation of said locking ratchet is adjacent to the lock tank wall of side, is used to make the power that acts on the locking ratchet to transfer to the housing wall of lock when needed.But the frictional force during for fear of regular job keeps very little gap between the lock tank wall of side and locking ratchet.This gap is like this to be selected littlely, even so that when big impact force occurring the locking ratchet shaft distortion but can not damage yet because the locking ratchet supports and prevents thus locking pawl axis excessive deformation through the lock tank wall of side in advance.This can make the diameter of locking pawl axis keep very for a short time, and can not damage required for the essential stability of accident conditions.Promptly this situation can appear: attempt to open door or lid with big power under case of collision.Thereby when the main card lock section was arranged on the load arm, this power imported in the load arm and from this load arm and directly continues to import in the locking ratchet.The minor diameter of locking ratchet axis of rotation helps to make the jam plate width to construct very for a short time.

The axis of rotation of said locking ratchet preferably is made of metal, and this metal is steel, hardened steel or alloy steel particularly.

According to the present invention, said rotary latch can completely or partially be made of metal.For metal, preferably use steel, hardened steel or alloy steel at this within the scope of the invention.The technician is known, and the intensity of metal and toughness are through alloy and/or special manufacturing process (for example temperature) adjustment.Preferably, within the scope of the invention, load arm is made of metal or utilizes metal to strengthen at least.At this, said rotary latch can completely or partially be used plastic overmold.Indivedual ingredients of said rotary latch, especially catch blocking arm and can be made of plastics fully.

Said locking ratchet can be made up of metal and/or plastics.But it preferably is made up of metal.

In a preferred embodiment, the said blocking arm of catching completely or partially is made of plastics, and is used for light and cost advantageously constitutes lock.Therefore this point also can realize in the present invention, is not used in kayser and is not loaded to a certain extent because catch blocking arm.

Preferably not only lock part but also main card lock section all constitute on load arm in advance.Preferably completely or partially form in this latched position by metal.

Be particularly suitable in motor vehicle, using according to lock of the present invention.This lock is compared gentlier with the lock of routine and is more cheap.

Description of drawings

Fig. 1 illustrates the view according to blocking mechanism of the present invention.

The specific embodiment

Fig. 1 illustrates has load arm 2 and the rotary latch 1 of catching blocking arm 3, and this rotary latch utilizes rotary latch axle 4 rotatably to be fixed on the jam plate that is made of metal.Be positioned at the main card lock position at the blocking mechanism shown in Fig. 1, because locking ratchet 6 kaysers are in main card lock section 9.Lock pin 5 prevents to leave blocking mechanism through load arm 2.

In the embodiment shown, closed block is than being 32.4mm/10.8mm=3.Fig. 1 shows that load arm 2 obviously is wider than and catches blocking arm 3 ground and constitute.Therefore the wideest regional d that catches blocking arm is wider than in the narrowest zone of load arm 2.When lock pin 5 moves in the slit entrance of rotary latch 1, catch blocking arm 3 and only be used to make rotary latch 1 rotation.Therefore catching blocking arm 3 can relative narrower.Catch blocking arm 3 and shrink, because this end is loaded by minimum towards open end.Therefore save material and weight reduction.Different therewith, load arm 2 is widened towards its open end, so that lock part 8 can both be arranged on the load arm with main card lock section 9 suitably in advance.

The blocking arm 3 of catching in the accompanying drawings is formed from steel, and catches blocking arm can constitute especially narrowly.This further helps to make jam plate width 10 to keep very for a short time.

The lock tank wall 11 that the locking ratchet is adjacent to the side is provided with, thereby when the locking ratchet stood brute force under collision situation, the locking ratchet can support against this lock tank wall 11.

Lever a begins and extends perpendicularly to force direction from the central point of rotary latch axle, lock pin this main card lock position along this force direction according to shown in arrow press load arm.Lever b begins and extends perpendicularly to force direction from the central point of rotary latch, the load arm 2 of rotary latch 1 this main card lock position along force direction according to shown in arrow press the locking ratchet.B/a is the closed block ratio.

Reference numerals list

1 rotary latch

2 load arms

3 catch blocking arm

4 rotary latch axles

5 lock pins

6 locking ratchets

The axis of rotation of 7 locking ratchets

8 preparatory lock parts

9 main card lock sections

10 jam plate width (being 62mm in this embodiment)

The lock tank wall of 11 sides

The slit entrance of 12 jam plates

The slit entrance of 13 rotary latches

A second lever (being 10.8mm in this embodiment)

B first lever (being 32.4mm in this embodiment)

The narrowest zone of c load arm

D catches the wideest zone of blocking arm

Claims

1. lock has blocking mechanism, and this blocking mechanism comprises locking ratchet (6) and have load arm (2) and catch the rotary latch (1) of blocking arm (3) that this rotary latch can be rotated to support on the rotary latch axle (4), and this rotary latch can hold lock pin (5),

It is characterized in that the closed block of said blocking mechanism is than more than or equal to 2.5, be preferably greater than and equal 3, and the main card lock section that is used for said locking ratchet is arranged on load arm.

2. lock as claimed in claim 1 is characterized in that the jam plate width is smaller or equal to 62mm.

3. like each described lock in the above-mentioned claim, it is characterized in that said locking ratchet (6) is rotatably mounted prejudicially.

4. like each described lock in the above-mentioned claim, it is characterized in that the lock tank wall (11) of axis of rotation (7) the next-door neighbour side of said locking ratchet (6) is provided with, this lock tank wall vertically is adjacent to the jam plate of tool lockbox slit entrance (12).

5. like each described lock in the above-mentioned claim, it is characterized in that the zone that is adjacent to locking ratchet axis of rotation (7) of said locking ratchet (6) is adjacent to the lock tank wall (11) of side, this lock tank wall is adjacent to the jam plate of tool lockbox slit entrance.

6. like each described lock in the above-mentioned claim, it is characterized in that lock part (8) is configured on the load arm (2) in advance.

7. like each described lock in the above-mentioned claim, it is characterized in that said load arm (2) is wideer than catching blocking arm (3).

8. like each described lock in the above-mentioned claim, it is characterized in that the said blocking arm (3) of catching is made of plastics fully or mainly.

9. like each described lock in the above-mentioned claim, it is characterized in that said load arm (2) is widened towards its open end.

10. like each described lock in the above-mentioned claim, it is characterized in that the said blocking arm (3) of catching shrinks towards its open end.

11. motor vehicle has like each described lock in the above-mentioned claim.