DE102019112460B3 - Adjustment device for a motor vehicle hood - Google Patents

Abstract

The invention relates to an adjusting device (S) for a motor vehicle hood with a hood part (1) and a body part (2), the hood part (1) being arranged in relation to the body part (2) via a hook (3) such that the hook ( 3) is connected to the hood part (1) via a first rotary connection (4), the hook (3) forming a lock (5) on one end and a first actuator holder (6) on the other, the body part (2) having a second actuator holder (7), a linear actuator (8) being arranged between the first actuator holder (6) and the second actuator holder (7), the hook (3) in a normal position in a hook receptacle (9) of the body part (2) by means of an energy store (10) is retracted.

Description

Technical field

The invention relates to an adjusting device for a motor vehicle hood according to the preamble of claim 1.

State of the art

Such adjustment devices are already known and used in a variety of forms and configurations.
In this context, the DE 10 2008 011 722 A1 which discloses a front flap hinge for a motor vehicle with two hinge legs, in which one of the two hinge legs ( 1 ) form a fastening part and a swivel part, which move relative to one another during the shift from the first swivel position into the spaced swivel position.
Next is in the DE 10 2007 056 277 A1 discloses a hinge for a front flap, which has a guide section in which the hinge lever is slidably arranged.
Also in the DE 10 2007 041 555 A1 discloses a front hood hinge in which a rail system, consisting of an outer rail and a displaceably mounted inner slide, is arranged between the two hinge halves.
Also in the DE 197 12 961 A1 a front hood hinge is shown, a backdrop being provided between the two hinge halves, which is designed to be resilient, among other things, for energy absorption.

For example, in the DE 10 2015 003 186 B3 an adjusting device for a flap of a motor vehicle, which is designed to move the flap between a retracted position and at least one extended position, the adjusting device comprising a body-side lower part, a flap-side upper part, an intermediate lever pivotally attached to the lower part via pivoting struts, and two pivotally fastened to the upper part Locking pawls and a coupling lever each pivotally mounted on the intermediate lever and on the upper part, wherein the locking pawls each have a lever via which they are coupled to one another and each locking pawl has a locking hook which is locked in the closed position of the flap on a locking portion of the intermediate lever, wherein an actuating element coupled to the first locking pawl is provided, which is designed to open the flap by loosening the locking hooks and pivoting the coupling lever about its two pivot axes to move the moving upper part and the stationary intermediate lever to the at least one extended position.

Further on DE 10 2016 112 187 A1 pointed out. There, a hinge of a front hood of a motor vehicle is disclosed in which two hinge parts can also be objected to with respect to one another.

In addition, the DE 10 2014 014 085 A1 pointed out. There, among other things, a front flap is disclosed which is pivotably arranged on a body via two hinge joints, each hinge joint comprising a hinge lower part arranged on the body side, a hinged upper part arranged on the flap side, an intermediate lever pivotally attached to the hinge lower part via pivoting struts and at least one each pivotable on the intermediate lever and on the hinge upper part attached, this connecting coupling lever, wherein a locking means is provided which locks the hinge upper part in the closed position of the front flap with the intermediate lever, and wherein a controllable, coupled to the hinge upper part is provided adjusting element which lifts the front flap into a protective position during which lifting movement while releasing the locking device, the coupling lever pivots about its two pivot axes on the moving hinge upper part and on the stationary intermediate lever and, when the end position is reached, moves into one on the Sc engages the lower hinge provided holding fixture.

Object of the invention

The object of the present invention is to overcome the disadvantages of the prior art. In particular, an adjustment device is to be provided which has as little weight as possible and which is intended to avoid complex kinematics with a small number of components, whereby in normal position, i.e. for everyday use, trouble-free use should be possible and should enable safe active pedestrian protection in the event of a pedestrian crash .

Solution of the task

The features according to claim 1 lead to the achievement of the object.

Advantageous configurations are described in the subclaims.

Advantages compared to the current state of the art: elimination of complex kinematics, saving weight and costs due to a reduced number of required components, flexible installation direction and height relative to the holding plate due to any desired alignment of the link guide, arbitrary arrangement and alignment of the energy storage element possible.

An adjustment device according to the invention is designed for a motor vehicle hood. As a rule, this is a front hood. However, it is also conceivable that the adjusting device can be used for a number of other types of flaps of a vehicle. The vehicle in the context of this invention is considered to be a motor vehicle, but also a truck or a transporter.

The adjustment device according to the invention consists of a hood part and a body part. The hood part is coupled to the body part by a hook. Coupled in this context means that there is mutual coupling. The hook is arranged such that it holds and fixes the hood part to the body part in a certain position in the normal position. In the event of a crash, in turn, the hook can be decoupled by a linear actuator in such a way that the hood part can be moved away from the body part relatively. The crash occurs when the vehicle has, for example, a collision with a person walking and the linear actuator is activated by signals from a sensor and thereby presses the hood part away from the body part.

In detail, the hood part is arranged to the body part via a hook in such a way that the hook is connected to the hood part via a first rotary connection. The rotary connection consists of a rivet which swivels or rotates the hook through an opening of the hook and an equally designed further opening of the hood part. The rotary connection and the associated opening of the hook are located approximately in the middle of the hook.

The hook also forms a lock at one end. It can be a curved L shape. But it is also conceivable that a different type of locking is provided. In this context, it is important that the lock can be retracted in a hook receptacle of the body part and extended and released in an unlocking manner. In the preferred exemplary embodiment, this is the case in such a way that the lock is normally inserted into the hook receptacle and in the event of a crash the lock extends from the hook receptacle.

At the other end, the hook also has a first actuator holder. The actuator bracket is a connection point between the linear actuator and the hook. In one exemplary embodiment, the connection point is designed such that the hook has a fixed or one-piece rod element which is formed in a receiving sleeve arranged on the end side of the linear actuator.

The body part has a second actuator holder, the linear actuator being arranged between the first actuator holder and the second actuator holder. The attachment of the second actuator holder can be carried out in the same way as the first actuator holder on the hook.

Furthermore, it is provided in an exemplary embodiment according to the invention that the hook is inserted into the hook receptacle in the normal position by means of an energy store. Specifically, this means that, for example, a spring presses the locking of the hook into the hook receptacle. But this also means that the linear actuator must be able to push the hook out of the hook holder.

In addition, it is provided that the hood part is displaceable to the body part via a link connection. Any connections between the hood part and the body part, in which a link guide and a link element engaging in the link guide are available, are possible here as the link connection. The backdrop guide, but also the backdrop element, can be designed as part of the hood part or the body part or can be attached as an additional element.

In the context of this invention, a preferred exemplary embodiment of a link connection is one made from an elongated hole and a passage which is guided in the elongated hole, the elongated hole and the passage being in each case either part of the hood part and / or of the body part. Specifically, this can mean that one penetration can be designed as part of the hood part and the second penetration can be designed as part of the body part, and both penetrations protrude into an elongated hole of the other hood part or body part. However, it is also conceivable that only the hood part or the body part has one or more openings and the other hood part or body part has one or more elongated holes. It is particularly advantageous that, due to the length, orientation and shape of the elongated holes, the complaints initiated in the event of a crash can be influenced, determined and defined from the hood part to the body part in a simple manner. For example, the elongated holes can have a curvature, a narrowing or only a certain length in order to adapt the spacing in the event of a crash and, depending on the front hood or other flap. In contrast to the current state of things, this has the advantage that there are no complex constructions are necessary to specify a direction of movement.

The hood part can be connected directly to a vehicle hood or a front hood of a vehicle or another flap. However, it is also conceivable for the hood part to comprise a hood arm, the hood arm being pivotably arranged on the hood part via a second rotary connection. As a result, the front hood of the vehicle can be opened and closed at any time and with the usual comfort in the normal position.

In another exemplary embodiment, a spacing clip is arranged on the hood part and / or the body part. In a preferred exemplary embodiment, these are at least three spacing clips. The spacing clip consists of a connection area and a spacing head. An advantage of the spacing clip is that the hood part can be pre-tensioned in a defined position in relation to the body part, so that rattling noises or other desired noise developments cannot occur in everyday use. The connection area and the spacer head are designed as a one-piece plastic part. The connection area is designed, for example, as spring arms which can be pressed together in order to be able to be pressed by a hood part receptacle and / or a body receptacle. The spring arms then relax and fix the spacer head on the other side of the holder.

The linear actuator can be different forms of actuators. For example, a pyrotechnic actuator, a hydraulic actuator, a pneumatic actuator or a mechanical spring actuator can be used. The functionality of the linear actuator is more important than the selection of the respective linear actuator type. A linear actuator according to the invention has the functionality that it should reach a linear extent as quickly as possible in order to actively bring the front cover into a predetermined position in the event of a crash. The linear actuator can be operated electronically. Specifically, this means that the linear actuator receives an electronic signal based on sensor signals about an existing crash in order to trigger and to bring the front cover into the position intended for the crash.

It is further provided that a tolerance compensation element is provided on the body part and is arranged such that the tolerance compensation element prestresses the body part to the hood part in the normal position. This also has the advantage that no unwanted rattling noises can occur in everyday use, i.e. in normal position.

Finally, it is claimed for the adjustment device according to the invention that a motor vehicle with a hood is also protected, at least one, preferably two, adjustment devices having a body part fastened on the body side and a hood part fastened on the flap side or hood side.

Figure list

• 1 eine perspektivische Ansicht einer erfindungsgemässen Verstellvorrichtung S in Normallage mit Blick auf ein Haubenteil und einem dahinter angeordneten Karosserieteil;
• 2 eine perspektivische Ansicht der Verstellvorrichtung S nach 1 in Normallage von der gegenüberliegenden Seite mit Blick auf ein Karosserieteil und dem dahinter angeordneten Haubenteil;
• 3 eine Seitenansicht auf die Verstellvorrichtung S nach 1 mit Blick auf das Haubenteil und dem dahinter angeordneten Karosserieteil in Unfalllage;
• 4 eine Seitenansicht auf die Verstellvorrichtung S nach 3 mit Blick auf das Karosserieteil und dem dahinter angeordneten Haubenteil in Unfalllage;
• 5 eine perspektivische Explosionsdarstellung wichtiger Bauteile der Verstellvorrichtung;
• 6 eine Seitenansicht auf die Verstellvorrichtung S nach 1 mit Blick auf das Haubenteil und dem dahinter angeordneten Karosserieteil in Normallage;
• 7 eine Teilschnittansicht des Haubenteils und des Karosserieteils entlang einer Linie C - C in 6 im Bereich eines Beabstandungsclips;
• 8 eine Schnittansicht des Haubenteils und des Karosserieteils entlang der Linie A - A in 6; und
• 9 eine Detailansicht eines Durchgriffs zwischen dem Haubenteil und dem Karosserieteil nach 8.

Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and with reference to the drawings; these show in:

• 1 a perspective view of an adjustment device S according to the invention in normal position with a view of a hood part and a body part arranged behind it;
• 2nd a perspective view of the adjusting device S after 1 in normal position from the opposite side with a view of a body part and the hood part arranged behind it;
• 3rd a side view of the adjusting device S after 1 with a view of the hood part and the body part arranged behind it in an accident situation;
• 4th a side view of the adjusting device S after 3rd with a view of the body part and the hood part arranged behind it in an accident situation;
• 5 an exploded perspective view of important components of the adjusting device;
• 6 a side view of the adjusting device S after 1 with a view of the hood part and the body part arranged behind it in normal position;
• 7 a partial sectional view of the hood part and the body part along a line C - C in 6 in the area of a spacing clip;
• 8th a sectional view of the hood part and the body part along the line A - A in 6 ; and
• 9 a detailed view of a penetration between the hood part and the body part after 8th .

Embodiment

In the 1 and 2nd is a perspective view of an adjusting device S for a motor vehicle hood, not shown. The adjusting device S has a hood part 1 and a body part 2nd on, the hood part 1 to the body part 2nd over a hook 3rd is arranged so that the hook 3rd via a first slewing ring 4th with the hood part 1 connected is. The slewing ring is a rotating rivet that ensures a firm connection, whereby it can also be rotated.

The hook 3rd in the embodiment shown here roughly has the shape of a concave quadrangle or a re-entrant quadrilateral, the two tips having the greatest distance from one another here each locking at one end 5 and elsewhere a first actuator bracket 6 trains. The lock is there 5 an additional one-piece tongue. The first slewing ring 4th is arranged in the area of the projecting corner arranged between the two ends.

So the catch forms 3rd the lock at one end 5 and has the first actuator bracket elsewhere 6 on, with the body part 2nd a second actuator bracket 7 has and between the first actuator bracket 6 and the second actuator bracket 7 a linear actuator 8th is arranged. The hook 3rd is in the normal position in a hook mount 9 of the body part 2nd by means of an energy store 10th retracted.

The hood part 1 is to the body part 2nd displaceable via a link connection In this exemplary embodiment, the link connection consists of two elongated holes arranged parallel to one another 11.1 , 11.2 and one in each of the long holes 11.1 , 11.2 guided penetrations 12.1 , 12.2 , the elongated holes 11.1 , 11.2 in this embodiment as punched out openings of the hood part 1 are trained and the penetrations 12.1 , 12.2 as parts of the body part 2nd . Here are the penetrations 12.1 , 12.2 as a bolt in the respective receptacles of the body part 2nd arranged and form one towards and through the hood part 1 penetrating extension. The passages point 12.1 , 12.2 on the body part 2nd away end arranged a flat head 20.1 , 20.2 on, the circumference or surface is designed such that the flat heads 20.1 , 20.2 if used properly, not through the elongated holes 11.1 , 11.2 can slide through. The arrangement in the 8th and 9 reveals.

In other embodiments, the arrangements of the elongated holes 11.1 , 11.2 and the respective penetrations 12.1 also be trained the other way around, so that the elongated holes 11.1 , 11.2 each as part of the body part 2nd are trained and the penetrations 12.1 , 12.2 . are then part of the hood part 2nd executed.

Finally, mixing can also take place in such a way that the one elongated hole 11.1 and the one penetration 12.1 as part of the hood part 1 and the other elongated hole 11.2 and that the other penetration 12.2 as part of the body part 2nd can be executed. Then there would be a cross arrangement of the elongated holes 11.1 , 11.2 and the penetrations 12.1 , 12.2 conceivable.

The hood part 1 includes a hood arm 13 , with the hood arm 13 via a second slewing ring 14 on the hood part 1 is pivotally arranged. Here, too, it is a rotating rivet in the embodiment shown.

On the hood part 1 are also three spacing clips 15.1 , 15.2 , 15.3 arranged. Each of the spacing clips 15.1 , 15.2 , 15.3 consist of a connection area 16 and a spacer 17th . The connection area 16 is either in a hood part recording 18th arranged with the spacer head 17th between the hood part 1 and the body part 2nd arranged. This can be done particularly well in the 7 detect. By providing three spacing clips 15.1 , 15.2 , 15.3 a three-point recording is possible, which provides optimal support for the hood part 1 to the body part 2nd enables.

Next is in the 1 a tolerance compensation element 19th shown that in the normal position but also in the event of a crash on the body part 2nd is arranged so that it is the body part 2nd to the hood part 1 at least slightly biased.

The 1 and 2nd show the adjustment device S according to the invention in normal position. This can be seen from the fact that the two flat heads 20.1 , 20.2 in the respective elongated hole 11.1 , 11.2 each at the second pivot point 14 facing end of the elongated holes 11.1 , 11.2 lie and thus the hood part 1 and the body part 2nd are shifted into each other.

In the 3rd and 4th the crash case is shown from two different perspectives. Here are the flat heads 20.1 , 20.2 such in the respective elongated holes 11.1 , 11.2 arranged that at the to the second pivot point 14 farthest end of the elongated holes 11.1 , 11.2 have come to rest. That means the linear actuator 8th was triggered and the hood part 1 away from the body part 2nd pushed. The flat heads slide from one end of the elongated holes 11.1 , 11.2 to the other end of the elongated holes 11.1 , 11.2 . By triggering the linear actuator 8th also became the catch 3rd with its lock 5 from the hook holder 9 taken away because the first actuator mount 6 a connection of the hook 3rd with the linear actuator 8th represents.

In 4th is shown that in the event of a crash the locking 5 of the hook 3rd so with the force of the linear actuator 8th acts against the force of the energy accumulator 10th the lock 5 from the hook holder 9 is pushed out.

5 shows an exploded view of the individual components of the adjustment device S. It is not repeated here to repeat the design made for the respective features and parts. It is only pointed out that the two slewing rings 4th , 14 each consist of two components. Each of these is a rivet and a rivet ring. Next is in the 5 well recognizable that the lift mechanism 10th is a torsion spring or leg spring.

The 6 is identical to 3rd , except that in the 6 a section line AA and a further section line CC are drawn.

7 shows a portion of the section line CC. It is easy to see there how the spacing clip 15.2 from a distance head 17th and a connection area 16 consists. The connection area 16 consists of a variety of unspecified spring arms with retaining hooks by the spacer head 17th protrude and compressible due to the hood part holder 18.2 can be brought to the spacing clip 15.2 in the part of the hood 18.2 is definable. It is advantageously achieved that the hood part 1 to the body part 2nd is biased in a defined position.

8th shows the sectional view AA, with a small section V in 9 shown enlarged. And in 9 it is easy to see that the flat head 20.2 of penetration 12.2 in the slot 11.2 is arranged. This allows the hood part 1 to the body part 2nd be moved.

Reference list

1

Hood part

2nd

Body part

3rd

hook

4th

First slewing ring

5

Interlock

6

first actuator bracket

7

second actuator bracket

8th

Linear actuator

9

Hook mount

10th

Lift mechanism

11

Long hole

12th

Penetration

13

Hood arm

14

Second slewing ring

15

Spacing clip

16

Connection area

17th

Spacer head

18th

Hood part holder

19th

Tolerance compensation element

20

Flat head

Claims (10)

Adjustment device (S) for a motor vehicle hood with a hood part (1) and a body part (2), characterized in that the hood part (1) is arranged to the body part (2) via a hook (3) in such a way that the hook (3 ) is connected to the hood part (1) via a first rotary connection (4), the hook (3) forming a lock (5) on one end and a first actuator holder (6) on the other, the body part (2) having a second actuator holder ( 7), a linear actuator (8) being arranged between the first actuator holder (6) and the second actuator holder (7), the hook (3) in the normal position in a hook receptacle (9) of the body part (2) by means of an energy store ( 10) is retracted. Adjustment device (S) Claim 1 , characterized in that the hood part (1) to the body part (2) are displaceable via a link connection. Adjustment device (S) Claim 2 , characterized in that the link connection consists of an elongated hole (11.1, 11.2) and a passage (12.1, 12.2) guided in the elongated hole (11.1, 11.2), the elongated hole (11) and the penetration (12.1, 12.2) each either Are part of the hood part (1) and / or the body part (2). Adjustment device (S) according to one of the Claims 1 to 3rd , characterized in that the hood part (1) comprises a hood arm (13), the hood arm (13) being pivotably arranged on the hood part (1) via a second rotary connection (14). Adjusting device (S) according to one of the preceding claims, characterized in that a spacing dip (15.1, 15.2, 15.3) is arranged on the hood part (1) and / or the body part (2). Adjustment device (S) Claim 5 , characterized in that the spacing dip (15.1, 15.2, 15.3) consists of a connecting area (16) and a spacing head (17), the connecting area (16) either in a hood part receptacle (18.1, 18.2, 18.3) and / or is arranged in a body part receptacle, and the spacer head (17) is arranged between the hood part (1) and the body part (2). Adjusting device (S) according to one of the preceding claims, characterized in that the linear actuator (8) is a pyrotechnic actuator, a hydraulic actuator, a pneumatic actuator or a mechanical spring actuator. Adjusting device (S) according to one of the preceding claims, characterized in that the linear actuator (8) can be actuated electronically. Adjusting device (S) according to one of the preceding claims, characterized in that a tolerance compensation element (19) is arranged on the body part (2) in such a way that the tolerance compensation element (19) prestresses the body part (2) to the hood part (1) in the normal position. Motor vehicle with a hood, characterized in that it has at least one, preferably two, adjusting devices according to one of the preceding claims, the body part (2) of which is fastened on the body side and the hood part (1) of which is fastened on the flap side.

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