WO2024068814A1 - Kunststoff-hohllängsträger sowie verfahren zur herstellung eines solchen kunststoff-hohllängsträgers - Google Patents
Kunststoff-hohllängsträger sowie verfahren zur herstellung eines solchen kunststoff-hohllängsträgers Download PDFInfo
- Publication number
- WO2024068814A1 WO2024068814A1 PCT/EP2023/076839 EP2023076839W WO2024068814A1 WO 2024068814 A1 WO2024068814 A1 WO 2024068814A1 EP 2023076839 W EP2023076839 W EP 2023076839W WO 2024068814 A1 WO2024068814 A1 WO 2024068814A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic
- hollow
- insert part
- profile
- longitudinal member
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14631—Coating reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14377—Coating a portion of the article, e.g. the edge of the article using an additional insert, e.g. a fastening element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14598—Coating tubular articles
- B29C45/14622—Lining the inner or outer surface of tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/10—Doors arranged at the vehicle rear
- B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
- B60J5/107—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans constructional details, e.g. about door frame, panels, materials used, reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
Definitions
- the invention relates to a plastic hollow longitudinal member according to the preamble of claim 1 and claim 5 and to a method for producing such a plastic hollow longitudinal member according to claims 4 and 10.
- a generic plastic hollow longitudinal member is known, which is produced in an internal fluid pressure injection molding process.
- This process has an injection molding step in which a molten injection molding compound of the plastic can be injected under pressure and heat into a cavity of an injection molding tool.
- the injected injection molding compound solidifies on the tool surface delimiting the cavity, with the inner plastic core still molten.
- a fluid is introduced into the tool cavity, by means of which the molten plastic core is displaced, thereby forming a hollow channel in the plastic hollow longitudinal beam.
- a carrier for an interior lining component is known from EP 2 347 920 A1.
- a mounting support is known from DE 10 2011 112 913 A1.
- the object of the invention is to provide a plastic longitudinal hollow beam whose component stability is increased in a simple manner compared to the prior art.
- the invention is based on a plastic hollow longitudinal member which is produced in an internal fluid pressure injection molding process in which, in an injection molding step, a molten injection molding compound of the plastic is injected under pressure and heat into a cavity of an injection molding tool.
- the injected injection molding compound solidifies on the tool surface delimiting the cavity, with the inner plastic core still molten.
- a fluid is introduced into the tool cavity, by means of which the molten plastic core is displaced. In this way, a hollow channel is formed in the plastic hollow longitudinal beam.
- to increase the component stability of the plastic Hollow longitudinal beam also has a hollow profile insert embedded in the plastic material.
- the hollow profile insert part encloses the hollow channel directly or indirectly in a ring shape in cross section.
- the hollow channel in the plastic hollow longitudinal beam is additionally reinforced with the help of the hollow profile insert part, so that load application points, for example hinges, cover buffers or gas spring connections, can be provided on the plastic hollow longitudinal beam.
- the hollow profile insert part can be constructed in one or more parts from a shell-shaped insert base body and an insert cross element.
- the shell-shaped insert base body has a profile base and profile flanks raised from it.
- the two profile flanks of the insert base body can be connected to each other in a force-transmitting manner via the insert cross element, which is arranged at a distance from the profile base.
- the tool cavity and in particular the inner profile space delimited by the hollow profile insert part are completely filled with the molten injection molding compound.
- the internal pressure molding step is then carried out, which completely or partially displaces the plastic core located in the profile space of the hollow profile insert part while forming the hollow channel. In this way, with the help of the hollow profile insert part, an extremely rigid construction of the plastic hollow longitudinal member is achieved.
- the hollow profile insert part or any other insert part that is embedded in the plastic material of the hollow plastic longitudinal member can be provided with an additional stiffening structure. With the help of such a stiffening structure, deformation of the insert part can be prevented during the injection process and the internal pressure molding step.
- the insert part can, for example, be a flat plastic or sheet metal part.
- the stiffening structure can preferably be an embossing that is made of the same material and is formed in one piece in the insert part.
- the insert part can be constructed from at least two individual segments which are joined together at a flange connection.
- the joining flanges of the two individual segments overlap each other to form a rigid double-wall structure.
- the flange connection can form the stiffening structure.
- the stiffening structure can protrude by a profile height from a base section of the insert part. It is advantageous in terms of installation space if the stiffening structure protrudes into the hollow channel, so that the external dimensions of the plastic hollow longitudinal beam are not influenced by the stiffening structure.
- a separate additional element can be assigned to the insert part, which forms the stiffening structure.
- the additional element can be connected to joints on the insert part base section.
- the additional element can be curved.
- the plastic hollow longitudinal member can be part of a tailgate inner part, which is covered from view by an outer tailgate part.
- the tailgate inner part and the tailgate outer part together form a tailgate of a vehicle, with the tailgate inner part providing a load-bearing tailgate structure on which tailgate components, such as hinges, lid buffers or gas spring connections, are provided.
- Figures 1 and 2 are views of a tailgate of a vehicle
- Figures 3 to 11 each show views of a hollow plastic longitudinal beam, which is part of a
- a two-lane vehicle with a tailgate 1 is shown in a view from the rear of the vehicle.
- the tailgate 1 closes a rear loading area of the vehicle and is hinged to a rear roof cross member of the vehicle at the top of the vehicle via tailgate hinges (not shown).
- the tailgate 1 is made up of an inner tailgate part 3 inside the vehicle and an outer tailgate part 5 outside the vehicle.
- the inner tailgate part 3 forms a load-bearing tailgate structure and is covered by the outer tailgate part 5 outside the vehicle, so that it is not visible.
- the outer tailgate part 5 is attached to the inner tailgate part 3 via an adhesive 7. connected.
- both the tailgate inner part 3 and the tailgate outer part 5 are manufactured as plastic injection-molded parts.
- the tailgate inner part 3 and the tailgate outer part 5 are essentially identical in construction as disclosed in DE 10 2019 209 326 A1. This means that both the tailgate inner part 3 and the tailgate outer part 5 are closed in a frame-like manner and enclose a rear window 17, with a rear window flange 15 (Fig. 2) being formed on the inner circumference of the tailgate outer part 5, on which the rear window 17 is supported.
- a core of the invention consists in the special design of the tailgate inner part 2.
- the tailgate inner part 3 has - analogous to DE 10 2019 209 326 A1 - a plastic longitudinal hollow support 19 with a hollow channel 23 as a reinforcing structure.
- the plastic longitudinal hollow support 19 extends in the frame circumferential direction (continuously or with interruptions) around the rear window 17 and is shown in cross section in Figure 2.
- the plastic longitudinal hollow beam 19 has a hollow profile insert part 21, which is at least partially embedded in the plastic material 20 of the plastic hollow longitudinal beam 19.
- the hollow profile insert part 21 encloses a hollow channel 23 of the plastic hollow longitudinal member 19 in a ring-shaped cross section.
- the inside of the hollow profile insert part 21 delimiting the hollow channel 23 is covered with plastic material 20, which directly delimits the hollow channel 23.
- the hollow profile insert part 21 is constructed in two parts from a shell-shaped insert base body 25 and from an insert cross element 27.
- Both the shell-shaped insert part 39 and the insert cross element 27 are, for example, realized as flat, shaped sheet metal parts.
- the shell-shaped insert base body 25 has a profile base 29 and profile flanks 31 raised from it.
- the insert cross element 27 is joined at joints 28 to the two profile flanks 31 of the insert base body 25 (for example by welding) so that the two profile flanks 31 are connected to one another in a force-transmitting manner via the insert cross element 27.
- a reinforcing rib 22 made of plastic material 20 is molded onto the top of the insert cross element 27.
- the hollow profile insert part 21 is firstly spread out according to Figure 3.
- the hollow profile insert part 21 is Insertion step (Figure 4) into a tool cavity 33 of an injection molding tool 35.
- An injection molding step then starts ( Figure 5), in which the tool cavity 33 and in particular also a profile space 37 delimited by the hollow profile insert part 21 ( Figure 3 or 4) are completely filled with the molten injection molding compound 38.
- the further course of the process is followed by an internal pressure molding step ( Figure 6), in which a gas filling G is introduced into the tool cavity 33 under pressure.
- the still molten plastic core located in the profile space 37 of the hollow profile insert part 21 is at least partially displaced while forming the hollow channel 23.
- a removal step is carried out in which the finished plastic hollow longitudinal member 19 ( Figure 7) is removed from the injection molding tool 35.
- Plastic hollow longitudinal beams 19 according to a further exemplary embodiment are described below with reference to FIGS. 8 to 11.
- 8 shows a plastic hollow longitudinal beam 19 formed with a hollow channel 23, in whose plastic material 20 an insert part 39 is also embedded in order to increase the component stability of the plastic hollow longitudinal beam 19.
- the shell-shaped insert part 39 is essentially shaped in the same way as the insert base body 25 according to Figures 2 to 7, namely with a profile base 29 and profile flanks 31 raised from it.
- the insert part 39 has an embossing 41 in the area of the hollow channel 23. This acts as a stiffening structure by means of which deformation of the insert part 39 is prevented during the internal pressure forming step.
- the embossing 41 is made of the same material and is formed in one piece in the profile base 29 of the shell-shaped insert part 39.
- the insert part 39 is constructed from two individual segments 43, which are firmly connected to one another at a flange connection F (e.g. by welding).
- a flange connection F joining flanges 44 of the two individual segments 43 overlap one another to form a component-rigid double-wall structure.
- the joining flanges 44 are angled upwards at a right angle from the profile base 29.
- the flange connection F forms the stiffening structure by means of which deformation of the insert part 39 is prevented during the internal pressure forming step.
- the embossing 41 or the flange connection F projects into the hollow channel 23 by a profile height h. This way stays the external dimension of the plastic hollow longitudinal member 19 remains unchanged despite the embossing 41 or the flange connection F.
- a separate additional element 47 is assigned to the insert part 39.
- the additional element 47 is connected to the joints 49 on the insert part 39 and, together with the profile base 29 of the insert part 39, forms a stiffening structure by means of which deformation of the insert part 39 is prevented during the internal pressure forming step.
- the additional element 47 is curved between the two joints 49 by a profile height h in the direction of the hollow channel 23.
- the insert part 39 is made up of two individual segments 43 that are firmly connected to one another at a flange connection F (e.g. by welding).
- a flange connection F e.g. by welding
- the joining flanges 44 of the two individual segments 43 overlap one another to form a component-rigid double-wall structure.
- the flange connection F forms the stiffening structure by means of which deformation of the insert part 39 is prevented during the internal pressure forming step.
- the joining flanges 44 are not angled edgewise from the profile base 29, but rather lie together with the profile base in a horizontal plane.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23782502.1A EP4594074A1 (de) | 2022-09-30 | 2023-09-28 | Kunststoff-hohllängsträger sowie verfahren zur herstellung eines solchen kunststoff-hohllängsträgers |
| CN202380069315.9A CN119947879A (zh) | 2022-09-30 | 2023-09-28 | 塑料中空纵向支架以及用于制造这种塑料中空纵向支架的方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022210374.2 | 2022-09-30 | ||
| DE102022210374.2A DE102022210374A1 (de) | 2022-09-30 | 2022-09-30 | Kunststoff-Hohllängsträger sowie Verfahren zur Herstellung eines solchen Kunststoff-Hohllängsträgers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024068814A1 true WO2024068814A1 (de) | 2024-04-04 |
Family
ID=88236801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/076839 Ceased WO2024068814A1 (de) | 2022-09-30 | 2023-09-28 | Kunststoff-hohllängsträger sowie verfahren zur herstellung eines solchen kunststoff-hohllängsträgers |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4594074A1 (de) |
| CN (1) | CN119947879A (de) |
| DE (1) | DE102022210374A1 (de) |
| WO (1) | WO2024068814A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3164436A1 (fr) * | 2024-07-12 | 2026-01-16 | Renault Sas | Panneau de structure de carrosserie de vehicule automobile. |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE326C (de) | 1877-07-24 | G. NIEMANN in Berlin | Neue Art von Plombenschlössern für Säcke und Oesen | |
| GB1433955A (en) * | 1974-01-14 | 1976-04-28 | Aro Plastics Dev Ltd | Moulding |
| DE60008220T2 (de) * | 1999-03-23 | 2004-07-08 | Rhodia Engineering Plastics S.A. | Verbundgegenstände mit einem starren teil und einem teil aus thermoplastischem material, und herstellungsverfahren |
| DE10317218A1 (de) * | 2003-04-15 | 2004-11-04 | Bayer Ag | Verfahren zur Herstellung eines Kunststoff-Metall-Verbundbauteils |
| EP2347920A1 (de) | 2010-01-21 | 2011-07-27 | Peguform GmbH | Träger für ein Innenverkleidungsbauteil sowie ein Verfahren zu seiner Herstellung |
| DE102010014542A1 (de) * | 2010-04-10 | 2011-10-13 | Daimler Ag | Verfahren zur Herstellung eines Verbundbauteils |
| DE102011112913A1 (de) | 2011-09-08 | 2013-03-14 | Decoma (Germany) Gmbh | Montageträger |
| DE102019209326A1 (de) | 2019-06-27 | 2020-12-31 | Volkswagen Aktiengesellschaft | Fahrzeug-Heckklappe sowie Verfahren zur Herstellung einer solchen Fahrzeug-Heckklappe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024224B4 (de) * | 2000-05-17 | 2005-03-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zum Innenhochdruckumformen |
| DE102009010589A1 (de) * | 2009-02-25 | 2010-09-02 | Engel Austria Gmbh | Hybrides Verbundprofil |
-
2022
- 2022-09-30 DE DE102022210374.2A patent/DE102022210374A1/de active Pending
-
2023
- 2023-09-28 CN CN202380069315.9A patent/CN119947879A/zh active Pending
- 2023-09-28 WO PCT/EP2023/076839 patent/WO2024068814A1/de not_active Ceased
- 2023-09-28 EP EP23782502.1A patent/EP4594074A1/de active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE326C (de) | 1877-07-24 | G. NIEMANN in Berlin | Neue Art von Plombenschlössern für Säcke und Oesen | |
| GB1433955A (en) * | 1974-01-14 | 1976-04-28 | Aro Plastics Dev Ltd | Moulding |
| DE60008220T2 (de) * | 1999-03-23 | 2004-07-08 | Rhodia Engineering Plastics S.A. | Verbundgegenstände mit einem starren teil und einem teil aus thermoplastischem material, und herstellungsverfahren |
| DE10317218A1 (de) * | 2003-04-15 | 2004-11-04 | Bayer Ag | Verfahren zur Herstellung eines Kunststoff-Metall-Verbundbauteils |
| EP2347920A1 (de) | 2010-01-21 | 2011-07-27 | Peguform GmbH | Träger für ein Innenverkleidungsbauteil sowie ein Verfahren zu seiner Herstellung |
| DE102010014542A1 (de) * | 2010-04-10 | 2011-10-13 | Daimler Ag | Verfahren zur Herstellung eines Verbundbauteils |
| DE102011112913A1 (de) | 2011-09-08 | 2013-03-14 | Decoma (Germany) Gmbh | Montageträger |
| DE102019209326A1 (de) | 2019-06-27 | 2020-12-31 | Volkswagen Aktiengesellschaft | Fahrzeug-Heckklappe sowie Verfahren zur Herstellung einer solchen Fahrzeug-Heckklappe |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022210374A1 (de) | 2024-04-04 |
| CN119947879A (zh) | 2025-05-06 |
| EP4594074A1 (de) | 2025-08-06 |
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