DE102020102639B4 - bonnet hinge - Google Patents

Abstract

Front flap hinge (F) with a body connection panel (1), a front flap arm (2), the front flap arm (2) being pivotably arranged at a pivot point (3) on the body connection panel (1), the pivot point (3) at one end is arranged on the body connection panel (1) and a connection point (4) is arranged on the other end on the body connection panel (1), the body connection panel (1) having a deformation area (5) in the event of a crash, the deformation area in the event of a crash (5) has a recess (6), characterized in that a tension/compression part extending across the recess (6) from a first side (7) of the recess (6) to a second side (8) of the recess (6). is arranged, wherein the tension/compression part absorbs pressure in a pressure direction (9) and has tensile strength in a tension direction (10), wherein the tension/compression part is a hook (11), the hook (11) being visible from the first side ( 7) extends beyond the recess (6) and in the second Side (8) engages in a hook receptacle (12), wherein the hook (11) is free to move in the pressure direction (9) in the hook receptacle (12) and is fixed in the pulling direction (10).

Description

technical field

The invention relates to a front flap hinge according to the preamble of claim 1.

State of the art

Such front flap hinges are already known and used in many forms and configurations. For example, in the DE 103 31 047 A1 discloses such a front flap hinge.

Next will be on the JP 2003 - 276 644 A , which discloses an impact protection for a vehicle front hood, in which, in the event of a compression of the vehicle front hood, a projection of a locking part deforms and thus absorbs force.
In addition, on the U.S. 8,899,363 B1 referenced, which discloses a bonnet hinge in which a retaining element causes an additional stiffening of the structure in the event of an accident.
Also will on the U.S. 5,718,019 A referenced, which discloses a front impact restraint hook on a hood hinge.

object of the invention

The object of the present invention is to overcome the disadvantages of the prior art. In particular, a bonnet hinge is to be provided that functions reliably with the least possible use of material and personnel and has the required properties in the event of an accident.

solution of the task

The features according to claim 1 lead to the solution of the problem.

Advantageous configurations are described in the dependent claims.

A front lid hinge according to the invention initially has a body connection panel, with a front lid arm being arranged on this body connection panel. The bonnet arm is pivotably connected to the body connection panel via a pivot point. The pivot point is arranged at one end on the body connection panel towards the front flap. There is also a connection point arranged at the other end of the body connection plate. The number of connection points is arbitrary and must be adapted to the conditions of the vehicle front area and the front hood or engine hood. The connection point is usually a hole through which screws or rivets can be passed in order to connect the body panel to a vehicle body in the front area.

The body connection panel has a deformation area in the event of a crash. This is an area which is arranged between the pivot point and the connection point, preferably in the third of the body connection panel which is aligned towards the pivot point.

It is part of the idea of the invention that this area of deformation in the event of a crash is deliberately and specifically weakened by the introduction of a recess. As a result, the deformation area in the event of a crash has a recess.

In order to be able to carry out a controlled weakening of the deformation area in the event of a crash, a tension/compression part extends across the recess from a first side of the recess to a second side of the recess.

This tension/compression part serves to ensure that, in a compression direction, a pressure-absorbing property that is at least partly caused by the recess is not prevented by the tension/compression part. A defined tensile strength is still achieved in one direction of tension.

Overall, this is a passive hood hinge. So it connects the front flap of a vehicle with the side members of the vehicle. As a rule, two such front flap hinges are used per front flap. A single-joint hinge is used to open the front flap. The opening of the front flap is supported by gas springs. The front flap can serve both as a bonnet and as a trunk lid.

In the event of an accident involving pedestrians or cyclists, the bonnet hinge must not be too stiff in the direction of pressure; conversely, it must be strong in the direction of pull or lifting in order to withstand the overpressure that may occur in the engine compartment or the forces used in an attempted theft.

The engine hood hinges installed in the prior art are currently shaped in such a way that they have sufficient tensile strength in the direction of pull, but absorb too little pressure in the direction of pressure to meet the requirement placed on them. The area of deformation in the event of a crash is between the hood arm and the connection points of the body connection panel arranged. A deformation path of around 20 mm is required here.

The recess can be a closed or partially open slot. Partially open in this context means that it has an opening at one point.

Furthermore, the recess is arranged between the pivot point and the connection point.

In a particular embodiment, the tension/compression part is a hook, the hook extending from a first side of the recess over the recess and engaging in a hook receptacle in the second side of the recess, the hook being free of movement in a controlled and defined manner in the compression direction and is fixed in the pulling direction. In this case, the hook can be formed in one piece from the body connection sheet metal in order to achieve a corresponding fixing in the pulling direction. However, it is also conceivable that the hook is connected to the first side of the recess by rivets or screws or the like.

In this context, the recess is typically L-shaped, with the longitudinal edge of the L-shape being located substantially from the pivot point to the junction and the hook being located at the shorter edge of the L-shape out of the body fascia is. The advantage of this embodiment is that practically no additional components are required and all necessary features can be cut or formed during the manufacturing process of the body sheet metal part, so that further work steps such as assembly are later omitted.

In another embodiment, the tension/compression part is a metal strip. The metal strip is firmly connected or riveted at one end at the first point of the recess. Other types of connection are also possible. In principle, it can also be welded, joined or glued. In the same way, the metal strip in this exemplary embodiment is also firmly connected or riveted to the second side of the recess, which is fixed in a different way.

In a further exemplary embodiment, the sheet metal strip is fixed to one end of one of the two sides of the recess on a fastening and is guided back to the fastening on the other side of the recess through a feed-through opening, with the other end of the sheet metal strip also being fastened to the fastening. As a result, the sheet metal strip in the end position, ie in the installed state, becomes a sheet metal tab which is arranged once around the through-opening.

Further exemplary embodiments for tension/compression parts are cable ties, steel cables or plastic parts. These further exemplary embodiments can also be fixedly connected to only one of the two sides of the recess and movably arranged on the other side, or they can be fixedly connected to both sides of the recess. It does not primarily depend on which form of connection or mobility is chosen here. Ultimately, it is important to have compressive properties in the compression direction and tensile properties in the tension direction.

character list

• 1 ein Frontlappenscharnier nach dem Stand der Technik;
• 2 einen Ausschnitt eines erfindungsgemäßen Frontklappenscharniers;
• 3 eine vergrößerte Ansicht eines Teils der 2;
• 4 eine Gesamtansicht des Karosserie-Anbindungsblechs nach den 2 und 3;
• 5 ein weiteres Ausführungsbeispiel für eines Frontklappenscharniers;
• 6a eine Seitenansicht eines weiteren Frontklappenscharniers;
• 6b eine geschnittene Ansicht der 6a;
• 7 verschiedene Zug-/Druckteile;
• 8 ein Zug-/Druckteil in einer weiteren Ausführungsform.

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

• 1 a prior art front flap hinge;
• 2 a section of a front flap hinge according to the invention;
• 3 an enlarged view of part of the 2 ;
• 4 an overall view of the body connection panel according to the 2 and 3 ;
• 5 another embodiment of a front flap hinge;
• 6a a side view of another front flap hinge;
• 6b a cut view of the 6a ;
• 7 various tension/compression parts;
• 8th a tension/compression part in a further embodiment.

example

In 1 a hood hinge according to the prior art is shown. There is a body connection plate 1. Next to the body connection plate 1 is a front flap arm 2 connected via a pivot point 3. Next, an arrow 9 is shown as the direction of pressure and another arrow 10 as the direction of pull. The body connection panel 1 has the pivot point 3 at one end, with various connection points 4 being shown at the other end. A deformation area 5 in the event of a crash is indicated below the pivot point 3, which should be able to carry out a defined movement in the pressure direction 9 in the event of a collision with cyclists or people.

In 2 a recess 6 is now shown, which is cut, punched or let into the crash deformation area 5 . This recess 6 has a first side 7 and a second side 8 . A hook 11 protrudes over these two sides 7 , 8 , the hook 11 being arranged in one piece at one end out of the body connection panel 1 and engaging in a hook receptacle 12 on the second side 8 . The hook receptacle 12 is arranged on the second side 8 of the recess 6 here. The arrangement of the hook 11 and the hook receiver 12 can also be different or opposite.

In 3 is an enlarged detail view of the 2 shown. It is easy to see there how the hook 11 is molded in one piece from the body connection sheet metal 1 on the first side of the recess 6 .

The hook 11 also has mobility in the pressure direction 9 in the hook receptacle 12 , with a tensile strength in the pull direction 10 being achieved by the hook receptacle 12 . For this purpose, the angled open end of the hook 11 is wedged into the hook mount 12.

In 4 is a body connection panel 1 shown, which in the 2 and 3 is shown in detail. The body connection sheet metal 1 here again has the pivot point 3 at one end and the connection points 4 at the other end. Otherwise, the in the 2 and 3 referenced statements made, the statements made there also for the 4 should apply. It is also easy to see here that the recess 6 has an L-shape, with the hook 11 reaching over the short edge of the L-shape.

the 5 until 8th do not belong to the invention.

5 shows an embodiment of a part of a body connection sheet metal 1. There the recess 6 is shown again over which a sheet metal strip 13 extends from the first side 7 of the recess to the second side 8 of the recess. In this embodiment, this metal strip 13 is either firmly connected on both sides, for example by a rivet connection, or only firmly connected on one of the two sides 7, 8 and on the other side 7, 8 is arranged so that it can move in the printing direction. In this case, for example, the movable element of the sheet metal part can be guided in a corresponding receptacle, which is not shown in detail here.

In the first place, both ends of the metal strip 13 are in the 5 preferably firmly connected to the body connection panel 1.

6a shows a side view of a bodywork connection panel 1 again having the recess 6, over which a sheet metal strip 13 is in turn arranged in such a way that it is guided from the attachment 14 to a feed-through opening 15 and then through the feed-through opening 15 back to the attachment 14. At the attachment 14 of the sheet metal strip 13 is fixed. It can be moved in a defined manner in the through-opening 15, with the primary focus here being on the tensile strength in the pulling direction 10. The recess 6 is generally active in the pressure direction as a pressure-receiving element due to the weakening of the body connection plate 1 .

the 6b shows a sectional side view from which it is easy to see how the metal strip 13 is passed through the feed-through opening 15 and fixed to the attachment 14 . This embodiment has the advantage that the feed-through opening 15 can already be inserted during the manufacturing process of the bodywork connection panel 1 and no further parts, such as a rivet, are required.

the 7 shows an example of further tension/compression parts in the form of a steel cable 17 or a cable tie 16, which, as shown in the previous figures, extend beyond a recess 6 (not shown here) and thereby create tensile strength in the tension direction 10, but in the compression direction 9 a pressure-absorbing property of the Body connection plate 1 through the recess 6 does not prevent or enable.

the 8th Finally, FIG Plastic part 18 is made possible.

reference list

1

Body connection panel

2

front flap arm

3

pivot point

4

connection point

5

Crash case deformation area

6

recess

7

First page

8th

Second page

9

pressure direction

10

pulling direction

11

hook

12

hook pickup

13

sheet metal strips

14

attachment

15

through hole

16

cable ties

17

steel cable

18

plastic part

19

slot recess

20

rivet

21

rod element

f

bonnet hinge

Claims (5)

Front flap hinge (F) with a body connection panel (1), a front flap arm (2), the front flap arm (2) being pivotably arranged at a pivot point (3) on the body connection panel (1), the pivot point (3) at one end is arranged on the body connection panel (1) and a connection point (4) is arranged on the other end on the body connection panel (1), the body connection panel (1) having a deformation area (5) in the event of a crash, the deformation area in the event of a crash (5) has a recess (6), characterized in that a tension/compression part extending across the recess (6) from a first side (7) of the recess (6) to a second side (8) of the recess (6). is arranged, wherein the tension/compression part absorbs pressure in a pressure direction (9) and has tensile strength in a tension direction (10), wherein the tension/compression part is a hook (11), the hook (11) being visible from the first side ( 7) extends beyond the recess (6) and in the second Side (8) engages in a hook receptacle (12), wherein the hook (11) is free to move in the pressure direction (9) in the hook receptacle (12) and is fixed in the pulling direction (10). bonnet hinge (F). claim 1 , characterized in that the recess (6) is a closed or partially open slot. bonnet hinge (F). claim 1 or 2 , characterized in that the recess (6) is arranged between the pivot point (3) and the connection point (4). Front lid hinge (F) according to one of Claims 1 until 3 , characterized in that the hook (11) is formed in one piece from the body connection panel (1). bonnet hinge (F). claim 4 , characterized in that the recess (6) has an L-shape, the longitudinal edge of the L-shape being arranged essentially from the pivot point (3) to the connection point (4) and the hook (11) on the shorter edge of the L-shape from the body connection panel (1) is arranged out.

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