DE102017004755A1 - Vehicle and method for operating a vehicle - Google Patents

Abstract

The invention relates to a vehicle (1) with a pedestrian protection device (F), comprising an edge (K) facing at least one of a windshield (6) when the vehicle collides with the vehicle (1) and additionally in the direction of the windshield (6). sliding bonnet (2). According to the invention engages in a normal position of the hood (2) a body-side arranged latch hook (7) in a on the hood (2) arranged lock bracket (5), wherein the lock bracket (5) is rotatably mounted. Furthermore, the invention relates to a method for operating such a vehicle (1).

Description

The invention relates to a vehicle with a pedestrian protection device, comprising a motor hood, which can be lifted in the event of a collision of a passenger with the vehicle, at least on an edge facing a windshield, and which is additionally displaceable in the direction of the windshield. Furthermore, the invention relates to a method for operating such a vehicle.

From the DE 10 2014 010 873 A1 is a vehicle that includes a hood, known. The hood can be raised by a hinge on a rim facing a windshield at a detected collision with the vehicle to the vehicle. In this case, the hinge is designed as a double hinge, so that the hood is additionally displaceable by means of the hinge in the direction of the windshield.

In addition, in the DE 10 2014 010 871 A1 a vehicle is described, which comprises a hood, which can be raised on an edge facing a windshield. The bonnet is additionally displaceable in the direction of a windscreen by separating a hood lock of a vehicle body. Alternatively, the hood lock is designed such that the hood is additionally displaceable in the direction of the windshield by canceling a closing connection of the hood lock.

Furthermore, the disclosure DE 10 2014 012 474 A1 a vehicle with a pedestrian protection device, which comprises an engine hood which can be raised in the event of a passenger collision with the vehicle at least at a rear edge facing a windshield. The hood is additionally displaceable in the direction of the windshield, with a displacement path being limited by means of a guide element on and / or in which a catching hook is displaceably arranged during the displacement.

The invention has for its object to provide a comparison with the prior art improved vehicle with a pedestrian protection device and an improved method for operating the vehicle.

The object is achieved according to the invention in terms of the vehicle by the in claim 1 and in terms of the method by the features specified in claim 9.

Advantageous embodiments of the invention are the subject of the dependent claims.

A vehicle with a pedestrian protection device comprises an engine hood that can be lifted in the event of a collision of a passenger with the vehicle, at least on an edge facing a windshield, and that can also be displaced in the direction of the windshield. According to the invention engages in a normal position of the hood a body-side arranged lock hook in a arranged on the hood lock bracket, wherein the lock bracket is rotatably mounted.

Characterized in that the lock bracket is rotatably mounted, the risk of entanglement of the lock bracket with a part of a hood lock, such as the lock hook, is substantially reduced in a positioning of the hood in a protective position.

The lock bracket is rotatably mounted so that it can slide along by a rotational movement of a part of the hood lock and thereby the entanglement, which blocks the positioning of the hood in the protective position, can be largely excluded.

In one possible embodiment, a stop element is arranged and / or formed on a hood lock comprising the lock hook, which causes the lock strap to rotate when the hood is displaced in the direction of the windshield.

In this case, the stop element forms a sliding surface for the lock bracket, whereby its rotation is caused when moving the engine hood. By sliding along the stop element and the rotatable mounting of the lock hanger not hooked with a part of the hood lock, whereby an assumption of the protective position of the hood for a person bouncing on the vehicle can be largely ensured.

In another possible embodiment, an axis of rotation of the lock bracket extends transversely to the vehicle longitudinal axis, wherein an angle between the axis of rotation and the vehicle longitudinal axis is not necessarily 90 °, so that the lock bracket is mounted rotatably substantially in the vehicle longitudinal axis and thereby when moving the hood in the direction of the windshield when exceeding a predetermined displacement path abuts the lock bracket and slides along the stop element, whereby the lock bracket rotates.

Further, the lock bracket is at least when it abuts against the stop element, released by the engagement of the lock hook, so that The hood can be moved in the direction of the windshield.

A development of the vehicle with the pedestrian protection device provides that a rotation of the lock bracket is blocked until reaching a predetermined level of force. Thus, it can be ensured as far as possible that the lock bracket during normal operation of the hood, d. H. when opening this, for example, to control an oil level, remains in its position, so that when closing the bonnet an operative connection between the lock bracket and the lock hook can be produced.

When closing the hood of the lock bracket is thus positioned in its usual position, so that the lock hook engages in the lock bracket and thereby the risk of accidental opening of the hood can be largely excluded.

The lock bracket is mounted rotatably on the hood in an embodiment by means of at least one elastically deformable element. In this embodiment, the storage is reversible, so that the lock bracket is automatically returned to its original position after rotation by the sliding along the stop element.

In the starting position of the lock bracket is positioned so that, if no further damage to the hood and / or in a front area of the vehicle to be recorded by the collision, the lock hook engages the lock bracket and the hood is closed.

Preferably, the at least one elastically deformable element is a spring element by means of which the prestressing of the lock strap can be automatically returned to its starting position. The plastically deformable element, in particular in the form of the spring element, takes after its elastic deformation at least largely its original shape, so that the elastically deformable element is reversible.

In addition, the spring element, which is largely relaxed in the initial position of the lock bracket, so has no bias, the force level, from which a rotation of the lock bracket is possible. In this case, the force level corresponds to a certain spring force with which the spring element can be prestressed.

Alternatively or in addition to the elastically deformable element, the lock bracket can also be rotatably mounted on the engine hood by means of at least one plastically deformable element. In this case, the plastically deformable element is a deformation element, which after its deformation is not traceable back to its original shape, so the deformation element is irreversible.

In addition, the invention relates to a method for operating a vehicle with a pedestrian protection device, wherein in a detected collision with the vehicle, a hood is lifted at least on an edge facing a windshield and additionally displaced in the direction of the windshield. According to the invention engages in a normal position of the hood a body-side arranged lock hook in a arranged on the hood lock bracket, wherein the lock bracket is rotatably mounted, one on a lock hook comprehensive hood lock arranged and / or trained stop element in a displacement of the hood in the direction of the windshield when exceeding a predetermined displacement path abuts the lock bracket and is rotated by means of the stop element of the lock bracket.

In addition, the method provides that the lock bracket, at least when it abuts against the stop element, is released from the engagement of the lock hook, so that the hood can be moved in the direction of the windshield.

Embodiments of the invention are explained in more detail below with reference to drawings.

• 1 schematisch eine Schnittdarstellung eines Frontbereiches eines Fahrzeuges mit einer Motorhaube in einer Normalstellung,
• 2 schematisch eine Schnittdarstellung des Frontbereiches des Fahrzeuges beim Positionieren der Motorhaube in eine Schutzstellung und
• 3 schematisch eines Schnittdarstellung des Frontbereiches des Fahrzeuges mit der Motorhaube in der Schutzstellung.

Showing:

• 1 1 is a schematic sectional view of a front area of a vehicle with a bonnet in a normal position;
• 2 schematically a sectional view of the front portion of the vehicle when positioning the hood in a protective position and
• 3 schematically a sectional view of the front portion of the vehicle with the hood in the protective position.

Corresponding parts are provided in all figures with the same reference numerals.

1 shows a sectional view of a front portion of a vehicle 1 with a hood 2 in a normal position, ie in a closed state.

In detail are in 1 a vehicle front 3 , a vehicle-side hood lock 4 , an at the Engine Hood 2 attached lock strap 5 and a windshield 6 shown.

The vehicle 1 has a pedestrian protection device F on top of the bonnet 2 includes, which at a detected collision with the vehicle 1 , in particular to the vehicle front 3 , on one of the windshield 6 facing edge K in the direction of the vehicle vertical axis z liftable and additionally in the direction of the windshield 6 , ie in the direction of the vehicle's longitudinal axis x , is displaceable.

By lifting the edge K and moving the hood 2 towards the windshield 6 are comparatively hard contact zones in the area of the hood 2 and the windshield 6 reduced. In addition, by moving the hood 2 towards the windshield 6 , ie in the direction of the vehicle's longitudinal axis x , Contact zones for one on the hood 2 bouncing person positively changeable, whereby a risk of injury to the person is at least substantially reduced.

By lifting the hood 2 in the direction of the vehicle vertical axis z is the hood 2 to an engine block of the vehicle, not shown 1 spaced, creating one on the hood 2 bouncing person deformation path for absorbing an impact energy is provided.

In particular, by moving the hood 2 one between a lower portion of the windshield 6 and the hood 2 arranged, so-called wiper shaft covered, whereby the risk of injury to the impacting person can at least be reduced.

To allow the hood 2 on the edge K liftable and towards the windshield 6 is slidable, it is necessary that the hood 2 is unlocked. That is, that the lock hanger 5 is unlocked, so no longer in engagement with a lock hook 7 of the hood castle 4 stands.

Prerequisite for lifting and moving the bonnet 2 is that the hood 2 , in particular the lock strap 5 , from the hood lock 4 is herausfahrbar, so that the lock hook 7 no longer in the lock hanger 5 intervenes. Is the engagement between the lock bracket 5 and castle hook 7 lifted, is the hood 2 by means of a suitable, not explained in detail guide in the front region of the hood 2 in the direction of the vehicle vertical axis z and the vehicle longitudinal axis x guided.

In the range not shown hinges whose hinge lever are movable so that the hood 2 in the area of the edge K both liftable and in the direction of the windshield 6 , ie in the direction of the vehicle's longitudinal axis x , is displaceable.

Because before moving and lifting the hood 2 the castle hook 7 in the lock hanger 5 engages, there is a risk that the lock bracket 5 when moving out of the hood lock 4 ie a relative movement between the lock bracket 5 and the castle hook 7 , with the dome lock 4 , in particular with the lock hook 7 , hooked. This does not allow the bonnet 2 from its normal position can be positioned in a protective position.

At least to reduce the risk of catching the lock handle 5 with the lock hook 7 and / or another component of the hood lock 4 when moving the hood 2 in the protective position is provided that the lock bracket 5 rotatable on the hood 2 is stored.

In 2 is a sectional view of the front portion of the vehicle 1 after activation of the pedestrian protection device F shown, with the bonnet 2 both in the direction of the vehicle's vertical axis z as well as in the direction of the vehicle longitudinal axis x emotional. Here is the lock handle 5 in the present embodiment according to 2 still in the area of the hood lock 4 arranged, wherein an engagement of the lock hook 7 in the lock hanger 5 is lifted, the lock hanger 5 but still in the hood lock 4 located.

To, as described above, a hooking of the lock handle 5 with the hood lock 4 To exclude as far as possible, has the hood lock 4 a stop element 8th on, which comprises a sliding surface, so that the stop element 8th has the function of a ramp. Here is the stop element 8th at the hood lock 4 arranged or formed.

By moving the hood 2 towards the windshield 6 leads the lock hanger 5 a relative movement to the hood lock 4 and in particular to the stop element 8th by.

The lock strap 5 contacted with the stop element 8th , where by the movement of the hood 2 with the lock strap 5 relative to the hood lock 4 a force on the lock hanger 5 acts, which exceeds a predetermined level of force.

This level of force is in particular by means of an elastically deformable element 9 , in particular a spring element, for example a torsion spring, can be predetermined, wherein the elastically deformable element 9 in the region of a in the present embodiment, parallel to the vehicle transverse axis y extending axis of rotation D of the lock-hanger 5 is arranged.

In the normal position of the bonnet 2 has the elastically deformable element 9 As far as possible no bias on, so that the lock bracket 5 is held in its starting position largely safe. The lock strap 5 is in its initial position so in relation to the hood lock 4 positioned that the lock hook 7 unhindered in the lock hanger 5 can intervene. The initial position substantially corresponds to an original state of installation of the lock bracket 5 ,

It is also conceivable that the elastically deformable element 9 is biased and the lock strap 5 holds securely in its starting position.

Acts by the relative movement between the lock bracket 5 and the stopper element 8th a force on the elastically deformable element 9 , which exceeds the predetermined force level, the lock bracket slides 5 along the stop element 8th , which causes the lock strap 5 towards an in 3 arrow in more detail P turns and thereby the spring element 9 as an elastically deformable element 9 biases.

The lock strap 5 slides by its rotational movement on the stop element 8th along, leaving the lock handle 5 unhindered from the hood lock 4 moved out and thus the hood 2 from the hood lock 4 solves. As a result, an unobstructed positioning of the hood is essentially 2 in their protective position, which in 3 shown is feasible.

Having a contact between the lock strap 5 and the stopper element 8th is lifted, the lock handle rotates 5 due to the bias of the elastically deformable element 9 in the form of the spring element back to its original position, wherein the elastically deformable element 9 takes its original form. The elastically deformable element 9 can therefore be used reversibly, so that the lock strap 5 several times around its axis of rotation D is rotatable and traceable to its original position.

Alternatively or in addition to the use of an elastically deformable element 9 can also be a plastically deformable element, a deformation element, can be used. The plastically deformable element holds the lock handle 5 in its initial position and deforms when in the relative movement between the lock bracket 5 and the stopper element 8th a predetermined, acting on the plastically deformable element force level is exceeded, so that the lock strap 5 around its axis of rotation D turns and this on the stop element 8th slides.

For example, the deformation element may comprise a predetermined breaking point, be formed as a sheet metal profile and be formed of two positively connected with each other components.

Furthermore, it is possible that the plastically deformable element the lock bracket 5 holds in its initial position and after rotation of the lock handle 5 by striking the stop element 8th and overcoming a blocking force, an unillustrated further elastically deformable element charged, so biased, which the lock bracket 5 reversed to its original position.

This makes it possible that in the event of a false triggering of the hood 2 this can at least be reversed so far that the vehicle 1 essentially with unrestricted visibility in a workshop can be driven.

Is the lock strap 5 from the hood lock 4 moved out, leaving the hood 2 unhindered in the direction of the windshield 6 is displaceable, the plastically deformable element does not take its original shape, with no bias on the lock bracket 5 acts, so that it is automatically traceable to its original position. The plastically deformable element is thus used irreversibly, so that it is necessary, this after a single activation of the pedestrian protection device F exchange.

The one on the hood 2 fastened lock strap 5 is to block the movement of the hood 2 with or without load on this in the direction of the vehicle's vertical axis z as well as in the direction of the vehicle longitudinal axis x To avoid as far as possible and / or to facilitate the movement, rotatably mounted. A catching of the lock strap 5 with the hood lock 4 is largely excluded, so that a positioning of the hood 2 in the protective position to reduce a risk of injury to the bonnet 2 bouncing person is substantially unhindered possible.

In other words, with a liftable and sliding hood 2 the movement or displacement of the hood 2 with load, ie with z. B. a load on the hood 2 by a person bouncing or hitting it, or without any load on the bonnet 2 facilitated or ensured. This is one Reaching the protective position of the hood 2 at a tripping of the pedestrian protection device F largely ensured.

LIST OF REFERENCE NUMBERS

1

vehicle

2

Engine Hood

3

vehicle front

4

Haubenschloss

5

shackle

6

Windshield

7

Castle hook

8th

stop element

9

elastically deformable element

D

axis of rotation

F

Pedestrian protection device

K

edge

P

arrow

x

vehicle longitudinal axis

y

Vehicle transverse axis

z

Vehicle axis

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102014010873 A1 [0002]
• DE 102014010871 A1 [0003]
• DE 102014012474 A1 [0004]

Claims (10)

Vehicle (1) with a pedestrian protection device (F), comprising a motor hood (2) which can be raised at an edge (K) facing a windshield (6) and which is additionally displaceable in the direction of the windshield (6) during a detected personal collision ), characterized in that in a normal position of the hood (2) a body-side arranged latch hook (7) engages in a on the hood (2) arranged lock bracket (5), wherein the lock bracket (5) is rotatably mounted. Vehicle (1) to Claim 1 , characterized in that on a the castle hook (7) comprehensive hood lock (4) a stop element (8) is arranged and / or formed, which in a displacement of the hood (2) in the direction of the windshield (6) when exceeding a predetermined displacement path on the lock bracket (5) abuts and causes a rotation of the lock bracket (5). Vehicle (1) to Claim 1 or 2 , characterized in that the lock bracket (5), at least when it abuts against the stop element (8), is released from the engagement of the lock hook (7). Vehicle (1) according to one of the preceding claims, characterized in that an axis of rotation (D) of the lock bracket (5) extends transversely to the vehicle longitudinal axis (x). Vehicle (1) according to one of the preceding claims, characterized in that a rotation of the lock bracket (5) is blocked until reaching a predetermined level of force. Vehicle (1) according to one of the preceding claims, characterized in that the lock bracket (5) by means of at least one elastically deformable element (9) is rotatably mounted on the hood (2). Vehicle (1) to Claim 6 , characterized in that the at least one elastically deformable element (9) is a spring element. Vehicle (1) according to one of the preceding claims, characterized in that the lock bracket (5) by means of at least one plastically deformable element is rotatably mounted on the hood (2). A method for operating a vehicle (1) with a pedestrian protection device (F), wherein at a detected collision with the vehicle (1) a hood (2) at least on one of a windshield (6) facing edge (K) raised and additionally in the direction of Windshield (6) is moved, characterized in that in a normal position of the hood (2) a body side arranged lock hook (7) in a on the hood (2) arranged lock bracket (5) engages, wherein the lock bracket (5) is rotatably mounted in which a stop element (8) arranged and / or formed on a hood lock (4) enclosing the lock hook (7) is displaced when the motor hood (2) is displaced in the direction of the windshield (6) if a predetermined displacement path is exceeded on the lock bracket (5). strikes and by means of the stop element (8) of the lock bracket (5) is rotated. Method according to Claim 9 , characterized in that the lock bracket (5), at least when it abuts against the stop element (8), is released from the engagement of the lock hook (7).

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