US-12617345-B2 - Motor vehicle with a cargo space and a cargo space well bounding the cargo space

Abstract

A motor vehicle having a cargo space and a cargo space well bounding the cargo space, wherein the cargo space well includes at least two tray parts and a frame structure connected to the tray parts. The respective tray part includes a floor section and at least one side wall section extending from the floor section, wherein the tray parts are arranged in such a way that the floor sections overlap in the region of their main expansion surfaces. The side wall sections of the tray parts circumferentially bound the cargo space, wherein adjacent side wall sections of the tray parts are connected to one another.

Inventors

• Philipp Kellner
• Scally Rommelfanger

Assignees

• DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT

Dates

Publication Date

20260505

Application Date

20230627

Priority Date

20220811

Claims (20)

1. 1 . A motor vehicle comprising: a cargo space well bounding a cargo space, wherein the cargo space well comprises at least two tray parts and a monolithic frame structure connected to the tray parts, wherein each tray part is a unitary body comprising a floor section and two side wall sections extending vertically from opposite sides of the floor section to form a U-shaped structure, wherein the tray parts are arranged in such a way that the floor sections overlap, and the side wall sections of the tray parts circumferentially bound the cargo space, wherein adjacent side wall sections of the tray parts are connected to one another, and wherein the monolithic frame structure comprises (i) floor struts engaging with at least one of the floor sections and (ii) side struts for supporting the side wall sections.
2. 2 . The motor vehicle according to claim 1 , wherein the tray parts are composed of a wood material or comprise a wood material.
3. 3 . The motor vehicle according to claim 1 , wherein the tray parts are connected to one another in a region of the overlapping floor sections.
4. 4 . The motor vehicle according to claim 1 , wherein, for each tray part, a material strength of the respective tray part in a region of the floor section and a material strength of the respective tray part in a region of the side wall sections are the same.
5. 5 . The motor vehicle according to claim 1 , wherein the frame structure is made of plastic or fiber-reinforced plastic.
6. 6 . The motor vehicle according to claim 1 , wherein the frame structure forms an upper circumferential edge of the cargo space well.
7. 7 . The motor vehicle according to claim 1 , wherein the side struts extend along adjacent outer edges of the side wall sections and/or the floor struts extend along outer edges of the overlapping floor sections.
8. 8 . The motor vehicle according to claim 1 , wherein the frame structure is sprayed or injected onto the tray parts.
9. 9 . The motor vehicle according to claim 1 , further comprising a horizontally extending fastening section that is configured to be connected to a body of the motor vehicle, wherein the fastening section is formed integrally with the monolithic frame structure.
10. 10 . The motor vehicle according to claim 9 , wherein the fastening section includes openings for receiving fasteners that are fastened to the body.
11. 11 . The motor vehicle according to claim 9 , wherein the fastening section extends parallel to the floor sections of the tray part.
12. 12 . The motor vehicle according to claim 1 , wherein steps are disposed on at least one of the floor struts, wherein one of the floor sections rests on top of an upper step of said steps and the other floor section rests on a lower step of said steps.
13. 13 . The motor vehicle according to claim 1 , wherein the tray parts are rotated by 90 degrees with respect to one another.
14. 14 . A method for manufacturing a cargo space well, wherein the method comprises at least the following method steps: providing at least two tray parts, wherein each tray part comprises a floor section and two side wall section extending vertically from opposite sides of the floor section to form a U-shaped structure, inserting the tray parts into an injection molding tool such that the floor sections are arranged so as to overlap, and the side wall sections of the tray parts circumferentially bound a cargo space of the cargo space well, and spraying or injecting a monolithic frame structure using the injection molding tool such that the sprayed or injected monolithic frame structure is connected to the tray parts in a positively locking and/or materially locking manner, and wherein the sprayed or injected monolithic frame structure comprises (i) floor struts engaging with at least one of the floor sections and (ii) side struts for supporting the side wall sections.
15. 15 . The method according to claim 14 , wherein, prior to inserting the tray parts into the injection molding tool, the tray parts are connected to one another.
16. 16 . The method according to claim 14 , further comprising a horizontally extending fastening section that is configured to be connected to a body of the motor vehicle, wherein the fastening section is formed integrally with the monolithic frame structure.
17. 17 . The method according to claim 16 , wherein the fastening section includes openings for receiving fasteners that are fastened to the body.
18. 18 . The method according to claim 16 , wherein the fastening section extends parallel to the floor sections of the tray part.
19. 19 . The method according to claim 14 , wherein steps are disposed on at least one of the floor struts, and wherein one of the floor sections rests on top of an upper step of said steps and the other floor section rests on a lower step of said steps.
20. 20 . The method according to claim 14 , wherein the tray parts are rotated by 90 degrees with respect to one another.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to German Patent Application No. 10 2022 120 274.7, filed Aug. 11, 2022, the content of such application being incorporated by reference herein in its entirety. FIELD OF THE INVENTION The present invention relates to a motor vehicle having a cargo space and a cargo space well bounding the cargo space, in particular a motor vehicle having a cargo space configured in a front end of the motor vehicle. Further, the invention relates to a method for manufacturing a cargo space well. BACKGROUND OF THE INVENTION Motor vehicles typically have a cargo space, often also referred to as trunk or luggage compartment, with a cargo space cavity, also referred to as a trunk cavity or luggage cavity. A cargo space can be configured in the front end, thus the front area of the vehicle, as well as in the rear end of the vehicle, thus the rear area. For example, if the motor vehicle comprises a center-engine or a rear-engine, the cargo space is typically configured in the front end. Even in electrically operated motor vehicles, due to the arrangement of the at least one electric motor used for propulsion in the front of the motor vehicle, there is typically room for a cargo space. The cargo space is bounded by a cargo space well, which is closed by a cargo space lid. With the cargo space lid open, the cargo space is accessible from above. The cargo space bounded by the cargo space well is often also referred to as the trunk cavity. Cargo space trays in the front end are often made of short or long fiber-reinforced thermoplastics. Injection molding or pressing processes are often used. In order to meet the required stiffness under stress and to reduce the maximum deflection of the cargo space well floor under weight loading, a reinforcing structure, for example in the form of ribs, is often provided in the region of the tray floor and/or the material strength is increased in this region compared to the material strength in the region of side walls of the tray. For example, a cargo space well having a reinforcing structure formed in the region of the well floor is known from KR 102212230 B1, which is incorporated by reference herein. SUMMARY OF THE INVENTION Described herein is a motor vehicle with a cargo space well designed in such a way that the cargo space well has a high stability with low weight and low manufacturing effort. More particularly, the motor vehicle according to the present invention comprises a cargo space and a cargo space well bounding the cargo space, wherein the cargo space well comprises at least two tray parts and a frame structure connected to the tray parts, wherein the respective tray part comprises a floor section and at least one side wall section extending from the floor section, wherein the tray parts are arranged in such a way that the floor sections overlap in the region of their main expansion surfaces, and the side wall sections of the tray parts circumferentially bound the cargo space, wherein adjacent side wall sections of the tray parts are connected to one another. The tray parts are arranged in a rotated manner with respect to their side wall sections, such that the side wall sections are adjacent in a circumferential direction of the cargo space well and at most slightly overlap, such that the strength of the side wall of the cargo space well is substantially identical to the strength of the side wall sections, whereas, by the overlapping arrangement of the floor sections, a wall strength in the floor region corresponds to the sum of the strength of the floor sections, whereby a reinforcement in the floor region is achieved. In comparison to the side walls and side wall sections, the floor region is generally exposed to a higher load, because it is stressed on flexure, while the sidewall sections are stressed primarily in tension. With the design according to aspects of the invention, a reinforcement in the floor region is easily achieved by the overlapping of the tray parts, while the strength in the circumferential region is not increased, because the side wall sections of the tray parts are circumferentially abut one another and preferably do not overlap. The frame structure achieves an additional stiffening of the cargo space well. The adjacent side wall sections need not contact one another, for example impact one another. It is quite conceivable and preferable that a gap between two adjacent side wall sections is filled by a section of the frame structure. Preferably, the cargo space well comprises exactly two tray parts. Preferably, the respective side wall section of the one tray part of the two tray parts is arranged between two respective side wall sections of the other tray part of the two tray parts, and vice versa, the respective side wall section of the other tray part of the two tray parts is arranged between two respective side wall sections of the one tray part of the two tray parts. Preferably, the