EP0995514B1 - Assemblage de panneaux sertis par pliage et méthode de fabrication d'un tel assemblage - Google Patents

Assemblage de panneaux sertis par pliage et méthode de fabrication d'un tel assemblage Download PDF

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Publication number
EP0995514B1
EP0995514B1 EP19990307792 EP99307792A EP0995514B1 EP 0995514 B1 EP0995514 B1 EP 0995514B1 EP 19990307792 EP19990307792 EP 19990307792 EP 99307792 A EP99307792 A EP 99307792A EP 0995514 B1 EP0995514 B1 EP 0995514B1
Authority
EP
European Patent Office
Prior art keywords
panel
bead
edge
hem
inner panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19990307792
Other languages
German (de)
English (en)
Other versions
EP0995514A1 (fr
Inventor
Robert Hindley 8 Renoir Close May
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jaguar Land Rover Ltd
Original Assignee
Land Rover Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Land Rover Group Ltd filed Critical Land Rover Group Ltd
Publication of EP0995514A1 publication Critical patent/EP0995514A1/fr
Application granted granted Critical
Publication of EP0995514B1 publication Critical patent/EP0995514B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors

Definitions

  • the present invention relates to a motor vehicle door panel as defined in claim 1.
  • US-A 5 237 734 shows according to the preamble of Claim 1 a known method of solving these problems in which a raised portion is provided along the edge of the inner panel.
  • a special tool provided with a slot corresponding to the raised portion. If the slot is not present, the raised portion will be flattened and the advantaged gained by providing an inner panel with a raised portion is lost.
  • DE-A-197 08 369 shows a similar arrangement applied to a vehicle sunroof where a pressed U-section bead is formed at the outer periphery of an inner panel and where a hem bent over the bead is secured by welds.
  • a motor vehicle door panel comprising a first, inner, panel and a second, outer, panel wherein the first and second panels are joined together at a hemmed joint comprising a hem of the second panel bent around a peripheral edge of the first panel to secure the edge of the first panel within the second panel, the peripheral edge of the first panel including a bead having an outer surface which interlocks with the inner surface of the hem, characterised in that the bead is solid and is at the outermost peripheral edge of the first panel.
  • the channel formed by the hem wrapping around the bead has a mouth narrower than a thickness of the bead, it will not be possible to pull the first panel from the second without damaging the channel.
  • the bead extends along the entire length of the edge of the first panel.
  • the bead is an integral part of the edge of the first panel.
  • the first panel is a die cast member.
  • the profile formed will be accurate, consistent and more tightly formed than has previously been possible.
  • the bead takes the form of a ridge extending out from a surface of the first panel.
  • the edge portion 2 of the first inner panel 4 has an upper surface 10 and a lower surface 12.
  • a bulbous profile or bead 14 is provided extending along at least a part of the edge portion of the first inner panel.
  • the bead 14 extends from the lower surface 12 of the first inner panel above the upper surface 10 of the first inner panel to form a ridge or lip 16 along that part of the edge of the first inner panel.
  • the first inner panel 4 is conveniently manufactured by die casting, though any other suitable method may be used.
  • the first inner panel is conveniently manufactured from cast steel, though any other suitable material, for example aluminium, may be used.
  • the edge portion 6 of the second outer panel 8 has a main portion 20 and a hem portion 22.
  • the main portion of the edge portion has an upper surface 24 and a lower surface 26.
  • the hem portion 22 is provided at an angle to the main edge portion and forms an acute angle therewith by way of a curved intermediate portion 28. The angle may be formed during the manufacture of the second outer panel or subsequent thereto.
  • the hem portion 22 is provided with an inner surface 30 and an outer surface 32.
  • the second outer panel 8 is conveniently manufactured from sheet steel, though any other suitable material, for example aluminium, may be used.
  • the method of joining the first inner panel 4 and the second outer panel 8 will now be described.
  • the second outer panel 8 is placed with the lower surface 26 of the main edge portion on a locating die (not shown).
  • the first inner panel is then placed with the lower surface 12 on the upper surface 24 of the main edge portion of the second panel such that the bead 14 is located adjacent the intermediate portion 28 of the edge of the second panel. In this position the hem portion 22 of the second panel extends over the lip 16 of the bead 14 of the first panel ( Figure 1).
  • a hemming punch (not shown) is then used to stamp the hem portion 22 of the second outer panel to the edge portion of the first inner panel.
  • the punch impacts the outer surface 32 of the hem portion 22 causing the hem portion to bend around the lip 16 of the bead 14 of the first panel such that the inner surface 30 of the hem portion comes into contact with the upper surface 10 of the first panel.
  • the bead 14 provides a back resistance during this bending of the hem portion about the lip of the bead. This allows the hem portion 22 to be tightly wrapped around the bead 16 to form a channel 34 at the edge of the second outer panel 8 having a narrow mouth 36 extending along the hemmed edge of the second outer panel. The edge 2 of the first inner panel 4 in this way becomes trapped inside the channel 34 formed by the second outer panel 8 since the bead 14 of the first inner panel 4 cannot pass through the mouth 36 of the channel 34 without distorting the channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Claims (5)

  1. Panneau de porte de véhicule à moteur comprenant un premier panneau, intérieur (4), et un deuxième panneau, extérieur (8), dans lequel les premier et deuxième panneaux sont joints l'un à l'autre au niveau d'un joint à bord rabattu constitué d'un bord rabattu (22) du deuxième panneau replié autour d'un bord périphérique (2) du premier panneau pour fixer le bord du premier panneau dans le deuxième panneau, le bord périphérique du premier panneau comportant un cordon (14) ayant une surface extérieure qui se verrouille sur la surface intérieure du bord rabattu, caractérisé en ce que le cordon (14) est plein et qu'il est au bord le plus à l'extérieur de la périphérie du premier panneau (4).
  2. Panneau de porte selon la revendication 1, caractérisé en ce que le cordon (14) s'étend le long de toute la longueur du bord (2) du premier panneau (4).
  3. Panneau de porte selon la revendication 1, caractérisé en ce que le bord rabattu replié 32 s'étend par-dessus une partie de surface du premier panneau sur le côté intérieur du cordon (14).
  4. Panneau de porte selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier panneau (4) est un élément moulé sous pression.
  5. Panneau de porte selon l'une quelconque des revendications précédentes, caractérisé en ce que le cordon (14) a la forme d'une crête (16) s'étendant au-dessus d'une surface du premier panneau (4).
EP19990307792 1998-10-17 1999-10-04 Assemblage de panneaux sertis par pliage et méthode de fabrication d'un tel assemblage Expired - Lifetime EP0995514B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9822625 1998-10-17
GBGB9822625.1A GB9822625D0 (en) 1998-10-17 1998-10-17 Panel assembly

Publications (2)

Publication Number Publication Date
EP0995514A1 EP0995514A1 (fr) 2000-04-26
EP0995514B1 true EP0995514B1 (fr) 2003-06-11

Family

ID=10840710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990307792 Expired - Lifetime EP0995514B1 (fr) 1998-10-17 1999-10-04 Assemblage de panneaux sertis par pliage et méthode de fabrication d'un tel assemblage

Country Status (3)

Country Link
EP (1) EP0995514B1 (fr)
DE (1) DE69908732T2 (fr)
GB (2) GB9822625D0 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE525397C2 (sv) * 2003-05-19 2005-02-15 Volvo Lastvagnar Ab Metod för tillverkning av panelformig komponent, samt karosskomponent
CN107457316B (zh) * 2017-06-29 2018-11-13 霍山汇能汽车零部件制造有限公司 一种多点连续包边成形方法
CN110000252B (zh) * 2019-05-14 2024-07-23 韦发全 一种金属复合板的后折弯包边结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532764A (en) * 1939-09-12 1941-01-30 Fibersteel Inc Improvements relating to containers made of layers of paper
GB703738A (en) * 1951-06-29 1954-02-10 Budd Co Improvements in or relating to joints between a frame member and a panel
GB882508A (en) * 1959-04-10 1961-11-15 Bower Lane Mfg Co Ltd Improvements relating to refuse and like bins or containers
US4450081A (en) * 1981-07-16 1984-05-22 Sealed Power Corporation Transmission fluid filter and method of manufacture
FR2601269B1 (fr) * 1986-07-08 1993-02-19 Carnaud Emballage Sa Procede d'assemblage d'un fond ou couvercle a un corps de boite et machine d'assemblage pour l'execution du procede.
US5237734A (en) * 1991-04-01 1993-08-24 General Motors Corporation Method of interlocking hemmed together panels
JP3351947B2 (ja) * 1995-01-19 2002-12-03 日本軽金属株式会社 ダイカスト製ドアパネル及びその製造方法
DE19639052C2 (de) * 1996-09-24 1998-07-09 Daimler Benz Ag Dünnwandiges, aus Leichtmetall bestehendes Druckgußteil als Strukturbauteil für Karosserien
DE19708369C1 (de) * 1997-03-01 1998-04-23 Webasto Karosseriesysteme Deckel eines öffnungsfähigen Fahrzeugdachs

Also Published As

Publication number Publication date
GB9822625D0 (en) 1998-12-09
GB2342607B (en) 2002-09-11
EP0995514A1 (fr) 2000-04-26
DE69908732T2 (de) 2004-05-13
GB9923274D0 (en) 1999-12-08
DE69908732D1 (de) 2003-07-17
GB2342607A (en) 2000-04-19

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