Source: https://patents.google.com/patent/DE19637512C2/en
Timestamp: 2020-05-27 10:41:28
Document Index: 723504765

Matched Legal Cases: ['art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10', 'art 10']

DE19637512C2 - Bumpers - Google Patents
DE19637512C2
DE19637512C2 DE1996137512 DE19637512A DE19637512C2 DE 19637512 C2 DE19637512 C2 DE 19637512C2 DE 1996137512 DE1996137512 DE 1996137512 DE 19637512 A DE19637512 A DE 19637512A DE 19637512 C2 DE19637512 C2 DE 19637512C2
DE1996137512
DE19637512A1 (en
Manfred Huettner
MAGNA PEBRA GMBH, 66280 SULZBACH, DE
1996-09-13 Application filed by DaimlerChrysler AG, Magna Pebra GmbH filed Critical DaimlerChrysler AG
1996-09-13 Priority to DE1996137512 priority Critical patent/DE19637512C2/en
1998-03-19 Publication of DE19637512A1 publication Critical patent/DE19637512A1/en
1999-11-11 Publication of DE19637512C2 publication Critical patent/DE19637512C2/en
The invention relates to a bumper for a force Vehicle according to the preamble of claim 1.
Bumpers of this type should not be optically on the vehicle emerge and due to their shape as integra appear as part of the body. It is for that required that the attachment to the vehicle body in in such a way that the visible crevices between the outer shell of the bumper and the outside skin of the body can be kept small and the same result in a moderate joint pattern. To achieve this, in known designs, the carrier part on its entire length supported on the body side. Between the Carrier part and the outer shell is curved thereby clearing a continuous tunnel-shaped cavity hold in which consist of a foam plastic de shock absorber is inserted. In the event of an impact the impact energy without a certain threshold Damage to the vehicle while deforming the exterior shell and deformation of the absorber foam in deforma tion work, after which the rever sibel deformable outer shell and the shock absorber like who take their original form. As a disadvantage is felt in such constructions that many attachment points to support the bumper are provided on the body. It can also be Absorber behavior difficult to the different, for Partly adapt country-specific standards, some of them different threshold values of the damage-free absorber impact energy for the front area and the corner Define the area of the vehicle. As a special night lig also turned out to be in the bumper integrated functional elements such as the fog in particular headlights only at a greater distance from the exterior le can be attached to the support part or at Shocks are particularly prone to damage.
DE 29 27 034 C2 discloses a generic impact catcher, in which an approximately U-shaped profiled base body as support part over the entire bumper length ka on the rosseries side from one of shock absorber sections th shock absorber is arranged. A springy movement to allow the bumper end parts are resilient there Intermediate means, but what an increased manuf due to installation and assembly costs. In addition, the ka arrangement of the carrier part in the sides on the horse side flank one in particular with a thick shock absorber Attachment of attachments close to the paneling is difficult.
From DE 25 09 265 A1 it is known to be an energy absorber beer profile about additional energy absorbers at the Support the body and with an elastic jacket underneath Cladding of functional units such as reflectors and Cover ventilation surfaces.
DE 28 53 244 A1 shows a bumper in which the Resistance to deformation of the energy absorber in the direction the bumper ends continuously by changing the density or gradually decreases.
Based on this, the object of the invention reasons, a bumper of the type mentioned there further develop that with warranty an optimal bumper function also the integration in the body shape and the possibility of integra tion of additional functional units further improved becomes.
To solve this problem is the in claim 1 specified combination of features proposed. Advantage adhesive refinements and developments of the invention result from the dependent claims.
The measures according to the invention achieve that the support member without sacrificing the required rigidity to support the corner areas of the outer cladding atone with his side flanks in the event of an impact participates in the deformation movement of the absorber.
According to a particularly advantageous embodiment of the Invention is the shock absorber in sections separate damping body formed, with a central Damping body in the of the outer shell and the Midsection of the support part limited cavity can be inserted and where two side damping body into the side shells of the Carrier part can be used. So it's simple Way possible, the damping body in terms of their Absorption behavior to be set differently. In addition the side damping bodies can be easily removed replace without having to dismantle the entire bumper that must.
A further improvement can be achieved that the side damping body molded on the front te have locking organs, the rest points of the carrier are partially snap-in, which is in terms of assembly, Storage and repair purposes is beneficial. In the side dampers are in the installation position a rear contact surface directly on the checks series supported.
The damping bodies are advantageously made of one Foam plastic manufactured. Different by setting The density of the foam plastic allows the shock energy absorption capacity of the damping body on a adapt in a simple way to specified values.
According to a further preferred embodiment of the Er The side shells have molded-on brackets for fastening functional units of motor vehicles stuff, especially fog lights, optical and acoustic signaling devices, sensors, spray nozzles orders and the like. With that, the Functional units with a short distance to the outer shell arrange, with the evasive movement of the sides in the event of a collision, also shell the moving ones Functional units better protected against damage are.
For fastening the housing close to the outer shell Fog lights can at least the side shells have a downwardly projecting flange, on wel chem the fog lights without additional Hal let it fasten.
In order to create an op to achieve timely integration of the fog lamp, can the outer shell below the side shells Have transmission opening, which is the transmission opening bounding wall area by an inward bent towards the lens of the fog lamp Edge strip is formed on which the scattering glass in front preferably over the distance formed on the edge strip holder while keeping an even joint is supported.
From a structural point of view, it is advantageous if the tshells are curved outwards in a C-shape and one to the adjacent inner surface of the outer shell have complementary outer surface course.
The shape integration of the bumper is thereby further improved that the side shells on their in the corner areas of the U-shaped outer shell engaging end sections molded cantilevers to support the screen have legs of the outer shell.
The middle section of the carrier is advantageously partly by an egg on the body Supportable in the transverse direction of the vehicle extending rear wall and one from the rear wall too the outer shell projecting upper and lower longitudinal wall formed. Due to this box-shaped structure sufficient stiffness in the central area of the Carrier part achieved. To improve the stiffness it is also advantageous if the middle section is over front, the damping body at their each other side walls separating the facing end faces de is connected to the side shells.
A particularly favorable connection on the body side probably the middle section as well as the side shells is achieved in that the carrier part in the area each of the side walls protrudes upwards Has support arm, which on the body via a Screw connection can be fastened.
To a vibration-free and at least partially game free attachment of the support part to the cross member of the Ka body, can be on the rear wall of the Mit spring section protruding diagonally backwards Tongues are formed, which when pressed against the Insert the cross member into openings in the rear wall under tension are pushable. The contact pressure becomes more advantageous Way applied in that the central portion of the Support part down in the area of the spring tongues standing support screwed to the body has.
For detachable connection of the carrier part and the outside can the carrier part along its top and / or bottom edge formed at least in sections Have U-edge profiles that are at a distance of mutually arranged locking slots are provided. Com complementary to this are form-fitting on the outer shell edge strips that can be inserted into the U-edge profiles provided on which locking tongues are formed, which can be snapped into the locking slots.
The support part and the outside are advantageous shell as one-piece molded parts made of plastic educated.
In the following the invention is based on one in the Drawing shown in a schematic manner example explained in more detail. Show it:
Figure 1 a front bumper for a passenger car in a perspective Explosionsdar position.
Fig. 2 is an enlarged section of the bumper of Figure 1 in a horizontal step cut at the level of a fog lamp and at the level of the shock absorber.
Fig. 3 to 5 are vertical sections along the section lines in Fig. 2.
The front bumper of a passenger vehicle shown in the drawing is constructed of molded plastic and essentially comprises an elongated carrier member 10, one side by a central damping body 12 and two damping bodies 14, 14 'formed shock absorber which can be connected one with the support part 10 is fixedly , as a covering for the visible covering of the support part and the shock absorber serving outer shell 16 and a lockable on the lower edge of the outer shell 16 spoiler 18th
The support part 10 , which can be fastened to the front body structure with alignment in the transverse direction of the vehicle, has a central section 20 which extends in the assembled state in the area below the bonnet and two side shells which adjoin the central section and extend towards the vehicle corners and have an approximately C-shaped curvature outwards in cross section 22 , 22 '. At the end portions of the side shells 22 , 22 'projecting at an angle to the rear projecting arms 24 , 24 ' are formed, which serve to support the laterally to the wheel races of the vehicle extending side legs 26 , 26 'of the outer shell 16 .
The U-shaped profiled central portion 20 of the carrier part 10 is by a series on a cross member of the plausible rear wall 28 , an upper and lower longitudinal wall 30 , 32 and two end side walls 34 box-like and thus rigid. At the Endab cut the rear wall 28 projecting resilient resilient tongues 36 , 36 'are formed, which are in tension in the installed state against the cross member of the body and are pressed into openings 38 , 38 ' of the rear wall 28 .
The lateral damping bodies 14 , 14 'can be inserted in a form-fitting manner in the side shells 22 , 22 ' of the carrier part 10 which are open towards the body, with latching elements 40 , 42 integrally formed on the end face for latching in correspondingly corresponding latching recesses 40 ', 42 ' of the carrier part 10 . In the installed position, a recess 44 provided for the spray nozzle arrangement of a headlight cleaning system is aligned with the damping bodies 14 , 14 'with corresponding openings 46 in the side plates 22 , 22 '. In contrast to the lateral damping bodies 14 , 14 ', the central damping body 12 is inserted from the front into the hollow space delimited by the central section 20 body, the surfaces of the damping body 12 and the side shells 22 , 22 ' facing the outer shell adjoining one another flush with the surface.
The outer shell 16 consists of a resilient plastic and is painted on the visible side in the body color. An outwardly protruding zone 48 , particularly at risk of impact, is separated from the rest of the outer surface by a stripping groove 50 , so that partial painting is possible in a simple manner. In the lower corner areas of the cladding 16 , transmission openings 52 are provided for the fog lights, between which an air inlet slot 54 extends. Below the adjoining the front lamp assembly sections 56 of the upper edge of the outer shell 16 , passage openings 58 for an extendable spray nozzle of the headlight cleaning system are punched out, which are covered by a swing-out flap 60 to the outside.
For preassembly of the bumper, the support member 20 equipped with the damping bodies 12 , 14 , 14 'is firmly connected to the outer shell via a plurality of detachable snap-in connections. For this purpose, the carrier part 10 along its upper edge sectionally formed te U-edge profiles 62 ( Fig. 1, 3), which are provided on their yoke legs with spaced-apart locking slots. Correspondingly, bare flange-shaped edge strips 64 are formed on the upper edge of the outer shell 16 which are bent downward and form-fit into the U-edge profiles 62 , on which projecting, latching tongues which project into the locking slots are formed. This connection principle is also used for connecting the lower edge of the carrier part 10 with an inwardly projecting flange on the upper edge of the air inlet slot 54 of the outer shell 16 , the joining direction being different by 90 °, so that the parts pre-fixed on the upper edge 10 , 16 can be locked together in a pivoting movement at the lower connection points. To an additional stabilization of radlaufnahen sides of the outer shell leg portions to reach 16, the fender side Anbindungsflansch 66 leg connected to the sides 26 through not shown, a separate support struts made of metal with a to the side shells 22, 22 'end side projecting mounting surface 68th
The fog lights 71 of the motor vehicle are integrated in the bumper and are particularly protected from damage in the event of an impact by their suspension on the side shells 22 , 22 'of the carrier part 10 . As seen from the left-hand section of the Figs. 2 and the vertical sections of FIGS. 3 and 5,, the side shells 22, 22 'each have two downwardly from standing to one another laterally-spaced flanges 68, 70 at which the plastic housing 72 a fog lamp 71 can be fastened via lateral arms 74 , 76 . For this purpose, the fog lamp is first centered from the rear of the bumper on the flanges 68 , 70 via two centering pins 78 , 80 and then secured in position by means of screw connections 82 , 84 . The rigid connection to the flanges 68 , 70 ensures that, in the event of an impact, the fog lamps 71 together with the side shells 22 , 22 'due to the deformation of the lateral damping bodies 14 , 14 ' backwards and thus initially protected against damage . At the same time, this special suspension allows the diffusing glass 86 of the fog lamp 71 to stand in a small position relative to the outer shell 16 . In order to achieve a harmonic transition in the region of the diffusing glass 86 , the wall area of the outer shell 16 which delimits the radiation opening 52 is formed by an inwardly bent edge strip 88 , to which three spacers 90 are formed, which are distributed over the opening circumference and are formed on the edge side which the scattering glass 86 is supported while keeping a uniform parting line 92 clear.
For attachment to the passenger car, the carrier part 10 in the region of the side walls 34 has upwardly projecting support arms 94 , which are covered by corresponding sections 96 of the outer shell and can be screwed onto screwing points on the body. As further suspension points are provided on the middle section 20 in the region of the clamping tongues 36 after un th protruding support tabs (not shown), which can be screwed on a support angle if necessary by pressing the clamping tongues 36 to the front cross member of the body on the underside of the cross member . In addition, bolted connections 98 are provided, which reach through to the connecting flanges 66 of the outer shell 16 towards the fenders.
In the assembled state, the side damping body 14 , 14 'are then supported directly on a striking plate 102 of the cross member, not shown, on a rear contact surface 100 facing away from the side shells 22 , 22 '. The striking plate 102 covers the U-shaped cross member on the end faces of its legs. In order to transfer the forces introduced into the damping body 14 , 14 'in a favorable manner to the legs of the cross member, the contact surface 100 of the damping body 14 , 14 ' is correspondingly limited by a longitudinal groove 104 .
The design of the carrier part 10 described above makes it possible to attach the bumper to the body with only a few screw connections. Due to the firmly connected upper edges of the carrier part 10 and the outer panel 16 , an optimal connection to the adjacent outer skin of the vehicle can be achieved while maintaining a uniform, narrow parting line. The carrier part 10 also supports the outer shell 16 in those areas in which no direct fixation to the body is possible or provided, in particular at the joint to the front lights and to the radiator grille.
In summary, the following can be stated: The inven tion relates to a bumper for a motor vehicle, which is essentially built from molded plastic parts and appears optically as part of the body. The bumper consists essentially of an elongated in the vehicle transverse direction support member 10 , three usable in the support member Dämpfungskör pern 12 , 14 , 14 'and a resilient outer shell 16th The support member 10 has cut at the lateral Endab side shells 22 , 22 ', which extend between the side damping bodies 14 , 14 ' and the outer shell 16 . In the event of an impact, the side shells 22 , 22 'deflect the rear of the damping bodies 14 , 14 ', so that attached shell parts are protected from damage on the sides.
1. bumper for a motor vehicle, with an attachable to the front or rear side of the body of the motor vehicle and its width spans the, at its central portion ( 20 ) body-supportable elongated support part ( 10 ), egg nem along the support part ( 10 ) itself extending shock absorber ( 12 , 14 , 14 ') and one with the carrier part ( 10 ) firmly connectable, the rear or front part of the vehicle under the visible overlap of the carrier part and the shock absorber around the form-elastic outer shell ( 16 ), a middle Section ( 12 ) of the shock absorber in a section of the outer shell ( 16 ) and the central section ( 20 ) of the carrier part ( 10 ) delimited cavity is arranged, characterized in that the carrier part ( 10 ) two laterally adjoining the central section ( 20 ) , between the side sections ( 14 , 14 ') of the shock absorber and the outer shell ( 16 ) extending side shell s ( 22 , 22 '), which are open to the body.
2. Bumper according to claim 1, characterized in that the shock absorber is formed in sections by separate damping body ( 12 , 14 , 14 '), wherein a central damping body ( 12 ) in the cut from the outer shell ( 16 ) and the Mittelab ( 20th ) limited cavity can be inserted, and two side damping bodies ( 14 , 14 ') can be inserted into the side shells ( 22 , 22 ') of the carrier part ( 10 ).
3. Bumper according to claim 2, characterized in that the lateral damping body ( 14 , 14 ') integrally formed on the front locking elements ( 40 , 42 ) sen, which can be locked at locking points ( 40 ', 42 ') of the carrier part ( 20 ).
4. Bumpers according to claim 2 or 3, characterized in that the lateral damping body ( 14 , 14 ') facing away from the side shells ( 22 , 22 ') of the Trä gerteil, directly supportable contact surface.
5. Bumper according to one of claims 2 to 4, characterized in that the damping body ( 12 , 14 , 14 ') consist of a foam plastic.
6. Bumper according to claim 5, characterized in that the side damping body ( 14 , 14 ') have a different density than the central damping body by ( 12 ).
7. Bumper according to one of claims 2 to 6, characterized in that the lateral damping body ( 14 , 14 ') have a transverse recess ( 44 ) for the passage of an extendable spray nozzle head egg ner headlight cleaning system.
8. Bumper according to one of claims 1 to 7, characterized in that the side shells ( 22 , 22 ') integrally formed brackets ( 68 , 70 ) for fastening supply of functional units of the motor vehicle.
9. Bumper according to claim 8, characterized net that the functional units as a fog detectors, signal transmitters, sensors or spray nozzles regulations are formed.
10. Bumper according to one of claims 1 to 9, characterized in that the side shells ( 22 , 22 ') have at least one downwardly projecting flange ( 68 , 70 ) for fastening the housing ( 72 ) of a fog lamp.
11. Bumper according to one of claims 1 to 10, characterized in that the outer shell ( 16 ) each Weil below the side shells ( 22 , 22 ') has a beam opening for a fog lamp, and that the beam opening ( 52 ) delimiting wall area of The outer shell is formed by an edge strip ( 88 ) bent inwards towards the diffusing glass ( 86 ) of the fog lamp, whereby between the edge strip ( 88 ) and the diffusing glass ( 86 ), a spacer ( 90 ) formed on the edge strip protrudes on the edge Parting line ( 92 ) is kept clear.
12. Bumpers according to one of claims 1 to 11, characterized in that the outer shell ( 16 ) egg nen below the central portion ( 30 ) of the Trä gerteile ( 10 ) between two for the fog lights specific radiating openings ( 52 ) extending air inlet slot ( 54 ).
13. Bumper according to one of claims 1 to 12, characterized in that the side shells ( 22 , 22 ') are curved approximately C-shaped outwards and egg nen to the adjacent inner surface of the outer shell le ( 16 ) complementary outer surface course sen.
14. Bumper according to one of claims 1 to 13, characterized in that the side shells ( 22 , 22 ') on their in the corner regions of the U-shaped outer shell ( 16 ) engaging end portions on shaped arms ( 24 ) for supporting the side legs ( 26 ) of the outer shell ( 16 ).
15. Bumper according to one of claims 1 to 14, characterized in that the central portion ( 20 ) of the carrier part ( 10 ) on a cross member of the body supportable in the vehicle transverse direction extending rear wall ( 28 ) and one of the rear wall ( 28 ) has upper and lower longitudinal walls ( 30 , 32 ) projecting towards the outer shell.
16. Bumper according to one of claims 1 to 15, characterized in that the central section ( 20 ) on the end, the damping body ( 12 , 14 , 14 ') on their mutually facing end faces vonei nander separating side walls ( 34 ) shell with the sides ( 22 , 22 ') is connected.
17. A bumper according to claim 16, characterized in that the carrier part ( 10 ) in the region of the Be tenwalls ( 34 ) each have an upwardly projecting arm, which can be attached to the body via a screw connection.
18. Bumper according to one of claims 1 to 17, characterized in that resiliently projecting resilient tongues ( 36 ) are integrally formed on the rear wall of the middle section ( 20 ), the un tension in openings ( 38 ) of the rear wall ( 28th ) can be pressed in.
19. A bumper according to claim 18, characterized in that the central portion ( 20 ) of the carrier part ( 10 ) in the region of the clamping tongues ( 36 ) has downwardly projecting support tabs which can be screwed to the body.
20. Bumper according to one of claims 1 to 19, characterized in that the carrier part ( 10 ) ent along its upper edge and / or lower edge at least sectionally formed U-edge profiles ( 62 ), which are arranged at a distance from one another of the locking slots are provided, and that the outer shell ( 16 ) has a form-fitting in the U-edge profiles ( 62 ) insertable edge strips ( 64 ), on which protruding, into the locking slots snap-in locking tongues are formed.
21. Bumper according to one of claims 1 to 20, characterized in that the carrier part ( 10 ) and the outer shell ( 16 ) are formed as one-piece molded parts made of plastic.
DE1996137512 1996-09-13 1996-09-13 Bumpers Expired - Fee Related DE19637512C2 (en)
DE1996137512 DE19637512C2 (en) 1996-09-13 1996-09-13 Bumpers
CA 2215288 CA2215288C (en) 1996-09-13 1997-09-11 Bumper
US08/928,663 US5984389A (en) 1996-09-13 1997-09-12 Bumper
DE19637512A1 DE19637512A1 (en) 1998-03-19
DE19637512C2 true DE19637512C2 (en) 1999-11-11
ID=7805645
DE1996137512 Expired - Fee Related DE19637512C2 (en) 1996-09-13 1996-09-13 Bumpers
US (1) US5984389A (en)
CA (1) CA2215288C (en)
DE (1) DE19637512C2 (en)
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DE19934141A1 (en) * 1999-07-26 2001-02-01 Dynamit Nobel Kunststoff Gmbh Bumper support for improved pedestrian protection in motor vehicles
DE10114018B4 (en) * 2001-03-22 2005-05-25 Dr.Ing.H.C. F. Porsche Ag Receiving and connecting device for a bow / rear bumper of a motor vehicle
MXPA04012007A (en) * 2002-06-06 2005-03-07 Netshape Corp Bumper with integrated energy absorber and beam.
FR2920724B1 (en) † 2007-09-10 2012-05-25 Plastic Omnium Cie Assembly of a bumper skin and masking means
US8025322B2 (en) * 2008-06-20 2011-09-27 Toyota Motor Engineering & Manufacturing North America, Inc. Bumper cover attachment method
US7506906B1 (en) 2008-07-22 2009-03-24 Honda Motor Co., Ltd. Vehicle bumper assembly
DE102013006328A1 (en) * 2013-04-11 2014-10-16 Daimler Ag Retaining arrangement of a bumper on a component of a passenger car and lighting unit for a passenger car
CN106882139A (en) * 2017-03-22 2017-06-23 山东国金汽车制造有限公司 A kind of automobile rear bumper installs supporting plate
FR3078665B1 (en) * 2018-03-06 2020-02-14 Psa Automobiles Sa Bumper skirt with reinforcement extensions
DE2853244A1 (en) * 1978-12-09 1980-06-19 Daimler Benz Ag Bumpers for motor vehicles
DE2927034C2 (en) * 1979-07-04 1990-11-08 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
1996-09-13 DE DE1996137512 patent/DE19637512C2/en not_active Expired - Fee Related
1997-09-11 CA CA 2215288 patent/CA2215288C/en not_active Expired - Fee Related
1997-09-12 US US08/928,663 patent/US5984389A/en not_active Expired - Fee Related
CN105383424B (en) * 2015-12-11 2019-05-24 广东东箭汽车科技股份有限公司 A kind of bumper for automobile
CA2215288A1 (en) 1998-03-13
US5984389A (en) 1999-11-16
CA2215288C (en) 2004-04-27
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Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE MAGNA PEBR
2000-02-17 8380 Miscellaneous part iii
Free format text: IN DER ZUSAMMENFASSUNG DER PATENTSCHRIFT WURDE DIE FALSCHE ZEICHNUNG VEROEFFENTLICHT. DIE FIGUR 1 GEHOERT ZUR ZUSAMMENFASSUNG DER PATENTSCHRIFT
Owner name: MAGNA PEBRA GMBH, 66280 SULZBACH, DE