DE102020102639A1 - Bonnet hinge - Google Patents

Abstract

The invention relates to a front flap hinge (F) with a body connection plate (1), a front flap arm (2), the front flap arm (2) being arranged on the body connection plate (1) so as to be pivotable at a pivot point (3), the pivot point (3) is arranged at one end on the body attachment plate (1) and a connection point (4) is arranged on the other end on the body attachment plate (1), the body attachment plate (1) having a deformation area (5) in the event of a crash, wherein the deformation area (5) in the event of a crash has a recess (6) and a push / pull part extending over the recess (6) from a first side (7) of the recess (6) to a second side (8) of the recess (6) is arranged, the tension / compression part being pressure-absorbing in a compression direction (9) and tensile strength in a tension direction (10).

Description

Technical area

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 a wide variety of forms and designs. For example, in the DE 103 31 047 A1 such a front flap hinge is disclosed.

Object of the invention

The object of the present invention is to overcome the disadvantages of the prior art. In particular, a front flap hinge is to be provided which functions reliably with the least possible use of materials 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 refinements are described in the subclaims.

A front flap hinge according to the invention initially has a body connection plate, a front flap arm being arranged on this body connection plate. The front flap arm is pivotably connected to the body attachment plate via a pivot point. The pivot point is arranged at one end on the body connection plate 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 or engine hood. The connection point is usually a hole through which screws or rivets can be passed in order to connect the body connecting plate to a vehicle body in the front area.

The body attachment plate has a deformation area in the event of a crash. This is an area which is arranged between the point of rotation and the connection point, preferably in the third of the body connection plate which is oriented towards the point of rotation.

Part of the inventive idea is that this deformation area in the event of a crash is deliberately and specifically weakened by making a recess. Consequently, 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 pulling / pushing part extends across the recess from a first side of the recess to a second side of the recess.

This pull / push part is used to ensure that a pressure-absorbing property at least partly caused by the recess is not prevented by the pull / push part in one pushing direction. A defined tensile strength is still achieved in one pulling direction.

Overall, this is a passive front flap hinge. It thus 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 as a hood as well as a trunk hood.

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 tensile or stiff in the direction of pull in order to withstand the overpressure that may arise in the engine compartment or the forces exerted in an attempted theft.

The front flap hinges installed in the prior art are currently shaped in such a way that they have sufficient tensile strength in the direction of tension, but do not absorb enough pressure in the direction of pressure to meet the requirement placed on them. The deformation area in the event of a crash is arranged between the bonnet arm and the connection points of the body binding plate. A deformation path of around 20mm 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.

The recess is also arranged between the pivot point and the connection point.

In a particular embodiment, the pull / push part is a hook, the hook from the first side of the recess over the recess reaches away and engages 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 pushing direction and being fixed in the pulling direction. In this case, the hook can be formed in one piece out of the body connection plate in order to achieve a corresponding fixation 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 generally has an L-shape, the longitudinal edge of the L-shape being arranged essentially from the pivot point to the connection point and the hook being arranged on the shorter edge of the L-shape out of the body connection plate is. The advantage of this embodiment is that practically no additional components are required and all the necessary features can be cut or molded in during the manufacturing process of the sheet metal body part, so that further work steps such as assembly are not required later.

In another embodiment, the pull / push part is a sheet metal strip. The sheet metal strip is firmly connected or riveted at one end to the first point of the recess. Other types of connection are also possible. Basically, it can also be welded, joined or glued. In the same way, the sheet 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 manner.

In a further embodiment, the sheet metal stiffener is fixed on one end to a fastening on one of the two sides of the recess and guided back to the fastening on the other side of the recess through a feed-through opening, 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, that is to say in the installed state, becomes a sheet metal tab which is arranged once around the feed-through opening.

Further embodiments for pull / push 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 respective 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 that there are pressure-absorbing properties in the compression direction and tensile properties are available in the tensile direction.

Figure list

• 1 ein Frontlappenscharnier nach dem Stand der Technik;
• 2 Tabulator einen Ausschnitt eines erfindungs gemässen 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 ein erfindungsgemässes F rontklappenscharnier;
• 6a eine Seitenansicht eines weiteren erfindungsgemässen 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 emerge from the following description of preferred exemplary embodiments and with reference to the drawings; these show in:

• 1 a prior art front flap hinge;
• 2 Tab a section of a fiction, according to the front flap hinge;
• 3 an enlarged view of part of FIG 2 ;
• 4th a general view of the body attachment plate according to the 2 and 3 ;
• 5 a further embodiment of a front flap hinge according to the invention;
• 6a a side view of a further inventive front flap hinge;
• 6b a sectioned view of the 6a ;
• 7th various pull / push parts;
• 8th a pull / push part in a further embodiment.

Embodiment

In 1 a front flap hinge according to the prior art is shown. There is a body connection plate there 1 . It can also be found on the body connection plate 1 one about a fulcrum 3 connected bonnet arm 2 . Next is an arrow 9 shown as the direction of printing and another arrow 10 as the direction of pull. The body connection plate 1 shows the fulcrum at one end 3 on, with different connection points on the other end 4th are shown. Below the pivot point 3 is a deformation area in the event of a crash 5 indicated, which in the event of a collision with cyclists or people a defined movement in the pressure direction 9 should be able to perform.

In 2 is now a recess 6th shown, which in the crash case deformation area 5 is cut, punched or embedded. This recess 6th has a first side 7th and a second page 8th on. About these two sides 7th , 8th a hook protrudes 11 , with the hook 11 one end from the body connection plate 1 addition is arranged in one piece and on the second side 8th in a hook mount 12th intervenes. The hook mount 12th is here on the second page 8th the recess 6th arranged. The arrangement of the hook 11 and the hook mount 12th can also be different or opposite.

In 3 is an enlarged detail view of FIG 2 shown. There you can see how the hook 11 in one piece from the body connection plate 1 on the first side of the recess 6th is molded out.

The hook 11 also shows in the hook mount 12th a mobility in the pressure direction 9 on, with a tensile strength in the tensile direction 10 through the hook mount 12th is achieved. To do this, the angled open end of the hook wedges 11 into the hook mount 12th .

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

5 shows a further exemplary embodiment of a part of a body attachment plate according to the invention 1 . There is the recess again 6th shown over which a sheet metal strip 13th from the first page 7th the recess to the second side 8th the recess reaches away. Here is this sheet metal strip 13th in this exemplary embodiment either firmly connected on both sides, for example by means of a rivet connection, or only on one of the two sides 7th , 8th firmly connected and on the other side 7th , 8th movably arranged 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 more detail here.

Primarily both ends of the sheet metal strip are 13th in the 5 preferably fixed to the body attachment plate 1 connected.

6a shows a side view of a further exemplary embodiment according to the invention, wherein the body connecting plate 1 again the recess 6th has, over which in turn a sheet metal strip 13th is arranged such that he is from the attachment 14th towards a lead-through opening 15th then through the feed-through opening 15th through back to the fastening 14th is led. At the attachment 14th is the sheet metal strip 13th set. In the feed-through opening 15th it is mobile in a defined manner, whereby here primarily on the tensile strength in the direction of pull 10 is respected. The recess 6th is the direction of pressure as a pressure-absorbing element due to the weakening of the body attachment plate 1 generally active.

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

the 7th shows an example of further pull / push parts in the form of a steel cable 17th or a cable tie 16 which, as shown in the previous figures, have a recess not shown here 6th reach away and in the direction of pull 10 establish tensile strength, but in the direction of compression 9 a pressure-absorbing property of the body connection plate 1 through the recess 6th not prevent or enable.

the 8th finally shows a further embodiment of a pull / push part in the form of a plastic part 18th , which one end over a leased line 20th with either side 7th , 8th of the body connection plate 1 is connected and at the other end a defined displaceability of one in a slot recess 19th guided rod element of the plastic part 18th is made possible.

List of reference symbols

1

Body connection plate

2

Front flap arm

3

pivot point

4th

Junction

5

Crash case deformation area

6th

Recess

7th

First page

8th

Second page

9

Print direction

10

Direction of pull

11

hook

12th

Hook mount

13th

Sheet metal strips

14th

Attachment

15th

Feed-through opening

16

cable ties

17th

Steel cable

18th

Plastic part

19th

Slot recess

20th

rivet

21

Rod element

F.

Bonnet hinge

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• DE 10331047 A1 [0002]

Claims (13)

Front flap hinge (F) with a body connecting plate (1), a front flap arm (2), the front flap arm (2) being pivotably arranged on the body connecting plate (1) at a pivot point (3), the pivot point (3) at one end is arranged on the body attachment plate (1) and a connection point (4) is arranged on the other end of the body attachment plate (1), the body attachment plate (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 push / pull part extends over the recess (6) from a first side (7) of the recess (6) to a second side (8) of the recess (6) is arranged, the tension / compression part being pressure-absorbing in a compression direction (9) and tensile strength in a tension direction (10). Front flap hinge (F) Claim 1 , characterized in that the recess (6) is a closed or partially open elongated hole. Front flap 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 flap hinge (F) according to one of the Claims 1 until 3 , characterized in that the pull / push part is a hook (11), the hook (11) extending from the first side (7) over the recess (6) and into a hook receptacle (12) on the second side (8) ) engages, the hook (11) being free of movement in the pressure direction (9) in the hook receptacle (12) and being fixed in the pulling direction (10). Front flap hinge (F) Claim 4 , characterized in that the hook (11) is formed in one piece from the body attachment plate (1). Front flap hinge (F) Claim 5 , 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 plate (1) is arranged out. Front flap hinge (F) according to one of the preceding claims, characterized in that the pull / push part is a sheet metal strip (13). Front flap hinge Claim 7 , characterized in that the sheet metal strip (13) is connected or riveted at one end to the first side (7) of the recess (6) and is connected or riveted at the other end to the second side (8) of the recess (6). Front flap hinge Claim 7 , characterized in that the sheet metal strip (13) is fixed on one of the two sides (7, 8) of the recess (6) to a fastening (14) and on the other side (7, 8) of the recess (6) is passed through a feed-through opening (15) and back to the fastening (14), the other end of the sheet metal strip (13) also being fastened to the fastening (14). Front flap hinge (F) Claim 9 , characterized in that the sheet metal strip (13) represents a sheet metal tab in the end position. Front flap hinge (F) according to one of the preceding claims, characterized in that the pull / push part is a cable tie (16) which is attached to the first side (7) of the recess (6) and to the second side (8) of the recess ( 6) can be anchored. Front flap hinge (F) according to one of the preceding claims, characterized in that the pull / push part is a steel cable (17) and the steel cable (17) the first side (7) of the recess (6) with the second side (8) of the Recess (6) connects. Front flap hinge (F) according to one of the preceding claims, characterized in that the pull / push part is a plastic part (18) which is firmly connected on one of the two sides (7, 8) of the recess (6) and on the other Side (7, 8) of the recess (6) is arranged to be movable in a reversibly movable manner in the printing direction (9).

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