Motor vehicle body with a panoramic window

Abstract

The invention relates to a motor vehicle body (1) with a panoramic windshield (2), wherein the motor vehicle body (1) comprises at least one first row of seats (5) located closest to the front of the motor vehicle body (1) and a second row of seats (6) arranged behind the first row of seats (5) extending from the front along a longitudinal axis (X) of the motor vehicle body (1), and wherein the motor vehicle body (1) comprises a B-pillar (8), a roof (10) with a roof cross member (12) and a rear rear window cross member (13) arranged facing the rear of the motor vehicle body (1), wherein the panoramic windshield (2) has a first windshield area (19) and a second windshield area (20), wherein the first windshield area (19) extends from the roof cross member (12) to an end of the area (21) which is formed between the B-pillar (8) and the rear window cross member (13).and the second window area (20) extends from the end of the area (21) to the rear window crossmember (13), the roof crossmember (12) being arranged at a height of the B-pillar (8) formed along the longitudinal axis (X) of the body. According to the invention, the first pane area (19) is configured as a fixed glass pane and the second pane area (20) is configured as a rear window and the panoramic pane (2) is configured as a single piece, consisting of the two pane areas (19, 20).

Description

[0001] The invention relates to a motor vehicle body with a panoramic window according to the preamble of patent claim 1.

[0002] Motor vehicle bodies with panoramic windows are well known. The panoramic window provides a wide field of vision and was originally used in windshields or rear windows. Today, the panoramic window is also used in the roof area of ​​motor vehicle bodies, where the roof, or at least a large part of the roof, is made primarily of glass or a transparent or semi-transparent material. The panoramic window extends, for example, forward, thus toward the front of the body, and / or backward, thus toward the rear of the motor vehicle body.

[0003] Patent application EP 1 405 744 A1 discloses a motor vehicle body with a panoramic windshield to improve driver visibility and the aerodynamic properties of the body. This panoramic windshield extends over the roof of the vehicle body to a central roof bow, thus simultaneously forming a roof window. This eliminates the need for a roof frame formed between the A-pillars and replaces it with an attachment running above the beltline of the interior with two lateral longitudinal frame sections. The roof and the attachment are supported by the A- and C-pillars, so the B-pillar can also be omitted.

[0004] German Patent Application DE 10 2011 013 320 A1 discloses a motor vehicle body with a panoramic window in the form of a single-piece panoramic glazing that extends almost across the entire width of the roof of the motor vehicle body and merges into a windshield. Visible areas of the windshield can be individually darkened using electrochromic glass or so-called LC glass.

[0005] German Patent Application DE 10 2004 032 295 A1 discloses a motor vehicle body for a four-door convertible whose A-pillars extend evenly across the front doors to the B-pillars on which they are supported. The rear doors are suspended from the B-pillars. The B-pillars are connected to each other by a bracket that spans the passenger compartment at the height of the front seat backrests. The bracket supports a rear edge of the windshield, which is electrochromic. Two independently switchable zones of the electrochromic windshield are intended to serve as sun visors for the driver and front passenger.

[0006] German Patent Application DE 198 52 184 A1 discloses a motor vehicle body with a one-piece rear and roof window extending from the trunk lid to over the heads of the vehicle's occupants. It consists of a thermally toughened glass pane coated with an opaque baked-on paint in the roof area and equipped with solar cells on the outside. These solar cells are attached to the pane with a colored plastic film laminated to the pane. Clip elements are glued to the roof area, allowing a roof panel to be snapped into place, concealing the solar cells and connecting elements.

[0007] From the publication DE 10 2010 025 203 A1, a motor vehicle body with a panoramic windshield is known. The B-pillars are connected to side members, which in turn are connected to a cross member, up to which the panoramic windshield extends. The side members are connected in alignment with the A-pillars. The roof can be converted by removing the cross member.

[0008] Patent application EP 1 859 975 A2 discloses a motor vehicle body with a panoramic windshield in the front and roof areas above the front seats, as well as another panoramic windshield in the center and rear areas. The two panoramic windshields are connected to each other in the area of ​​a B-pillar by means of a cross member.

[0009] The object of the present invention is to provide an improved motor vehicle body with a panoramic window.

[0010] The object is achieved according to the invention with a motor vehicle body having a panoramic window with the features of patent claim 1. Advantageous embodiments with expedient and non-trivial further developments of the invention are specified in the respective subclaims.

[0011] A motor vehicle body according to the invention with a panoramic window has a first row of seats closest to a front of the motor vehicle body and a second row of seats arranged behind the first row of seats, starting from the front along a longitudinal axis of the motor vehicle body. The motor vehicle body comprises a B-pillar, a roof with a roof cross member, and a rear rear window cross member arranged facing a rear of the motor vehicle body. The panoramic window has a first window region and a second window region, wherein the first window region extends from the roof cross member to a region end formed between the B-pillar and the rear window cross member, and wherein the second window region extends from the region end to the rear window cross member.The roof cross member is arranged at a height of the B-pillar, which is formed along the longitudinal axis of the body. According to the invention, the first window region is designed according to a fixed glass pane having a fixed glass pane function, and the second window region is designed according to a rear window having a rear window function, wherein the panoramic window consisting of the two window regions is formed in one piece. The advantage of the one-piece design of the panoramic window with two different window regions, each window region having a specific function, can be seen in a significant improvement in the driver's field of vision to the rear, since the elimination of the roof cross member in its usual position and its relocation to the area of ​​the B-pillars now creates a one-piece, continuous, transparent surface from the B-pillar to the rear window cross member.

[0012] A further advantage is improved headroom for the second-row occupants, since, especially in hatchback or coupe-style vehicle bodies, the headroom for the second-row occupants is typically reduced compared to the first-row occupants. Light penetration into the vehicle body is also significantly increased, especially for the second-row occupants.

[0013] The advantages of the motor vehicle body according to the invention can be further enhanced by the fact that the first pane area and / or the second pane area consists of a thermal glass, in particular a switchable thermal glass.

[0014] If the end of the area corresponds to the end of the field of vision of the occupants of the first and / or second row of seats, the occupants of the first and / or second row of seats can utilize all the advantages of the first window area, which is designed as a fixed glass pane. If the end of the area corresponds, in particular, to a virtual roof cross member in the area of ​​the C-pillar, a cost-effective conversion of a vehicle body that originally had the roof cross member in the area of ​​the C-pillar can be achieved in a simple manner.

[0015] Further advantages, features, and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective combinations specified, but also in other combinations or on their own, without departing from the scope of the invention. Identical or functionally equivalent elements are assigned identical reference numerals. They show: Fig. 1 in a top view section of a shell of a motor vehicle body with a panoramic window according to the prior art, Fig. 2 in a top view section of the motor vehicle body with the panoramic window according to the state of the art, Fig. 3 in a longitudinal section the motor vehicle body according to Fig. 2 with passengers on one front seat and one rear seat, Fig. 4 in a top view section of the shell of a motor vehicle body according to the invention with a panoramic window, Fig. 5 in a top view section of the motor vehicle body according to the invention with the panoramic window, and Fig. 6 in a longitudinal section the motor vehicle body according to Fig. 6 with passengers in one front seat and one rear seat.

[0016] In the Fig. 1 to 3, a motor vehicle body 1 with a panoramic window 2 according to the prior art is shown, wherein in Fig. 1 its shell 3 in a top view, in Fig. 2 in a top view section the motor vehicle body 1 with the panoramic window 2 and in Fig. 3 in a longitudinal section the motor vehicle body 1 according to Fig. 2 with passengers 4 on a first row of seats 5 and on a second row of seats 6.

[0017] For improved explanation, a Cartesian coordinate system is introduced, which identifies a longitudinal axis X of the motor vehicle body 1, a transverse axis Y of the motor vehicle body 1 and a vertical axis Z of the motor vehicle body 1.

[0018] The first row of seats 5 is to be understood as the row of seats closest to a front of the motor vehicle body 1 (not shown in detail), which is usually also referred to as the front row of seats, comprising so-called front seats. The second row of seats 6, arranged along the body's longitudinal axis X behind the first row of seats 5, is usually also referred to as the rear, comprising rear seats.

[0019] The motor vehicle body 1 has an A-pillar 7, a B-pillar 8 and a C-pillar 9 as well as a roof 10 with a windscreen support 11 for a windscreen 14 of the motor vehicle body 1, a roof cross member 12 and a rear window cross member 13 arranged facing a rear of the motor vehicle body 1 (not shown in detail).

[0020] The panoramic window 2 of the motor vehicle body 1 is arranged between the windscreen cross member 11 and the roof cross member 12 according to the prior art, wherein the panoramic window 2 is designed in the form of a fixed glass roof and should therefore necessarily have a special strength and stability.

[0021] A rear window 15 of the vehicle body 1, which can also be referred to as a bodyshell-mounted rear window, is formed between the rear window cross member 13 and the roof cross member 12. The rear window 15 is generally subject to certain legal requirements, or in other words, it has a rear window-specific function. It must have a certain light transmission in a defined area and be heatable.

[0022] In Fig. 3 shows that, due to the roof cross member 12 arranged between the panoramic window 2 and the rear window 15, which has a panel 18, there is a certain restriction of headroom for the occupant 4 of the second row of seats 6. Furthermore, when viewed to the rear, which is indicated by a view arrow 17, a concealed area 16 is formed by the rear window 15. The concealed area 16 results in restricted visibility.

[0023] To improve visibility, the motor vehicle body 1 according to the invention, which is shown in the Fig. 4 to 6, the panoramic window 2 has a first window region 19 and a second window region 20, wherein the first window region 19 extends from the roof cross member 12, which in the present embodiment is arranged in the region of the B-pillar 8, to an end 21 of the first window region 19. The end 21 of the region is located between the roof cross member 12 and the rear window cross member 13, so that the two window regions 19, 20 are formed.

[0024] In the present exemplary embodiment, the area end 21 corresponds to a virtual roof rack 22 in the area of ​​the C-pillar 9. The virtual roof rack 22 corresponds to the roof cross member 12 of the motor vehicle body 1 according to the prior art, as shown in Fig.1. Or in other words, the roof cross member 12 of the motor vehicle body 1 was removed according to the prior art and the roof cross member 12 was inserted in the area of ​​the B-pillar 8, as indicated by the arrow. The area end 21 could equally be an end of a field of vision of occupants 4 of the second row of seats 6. The area end 21 could also be an end of a field of vision of occupants 4 of the first row of seats 5. At this point, it should be mentioned that the end of the field of vision of occupants 4 of the first row of seats 5 naturally also refers to a rearview mirror view of a driver of the motor vehicle body 1.

[0025] The first pane region 19 is designed according to a fixed glass pane having a fixed glass pane function. In other words, it has the basic function of a conventional fixed glass pane, which is designed in the form of so-called laminated safety glass, and comprises an outer pane, an inner pane, and a connecting layer. Furthermore, it is made of a thermal glass, which is in particular switchable. Likewise, the second pane region 20 could also comprise a thermal glass, in particular a switchable thermal glass.

[0026] As a measure against the sensation of cold, the first pane area 19 has a so-called low-E coating, which is designed in the form of an insulating glass with a wafer-thin metal layer for heat radiation.

[0027] The first pane area 19 features a so-called A-PVB film to reduce noise. A tinting of the first pane area 19 is also provided to achieve reduced light transmission. This tinting can be implemented in the form of a tinted pane or a film.

[0028] The first pane region 19 further has a heat-insulating function and, for example, comprises an infrared-reflecting film or is equipped with an infrared-absorbing agent. The film can be inserted into the first pane region 19, or the first pane region 19 can be coated with the film.

[0029] Likewise, a switchable film could be formed in the first pane area 19 to achieve a dimming function, wherein the switchable film can also be segmented and thus switchable in certain areas.

[0030] Furthermore, the first pane area 19 could have a so-called ambient light. For example, light guides could be attached to the outer edges of the first pane area 19, and when activated, a corresponding light would be generated in the glass.

[0031] The second window area 20 extends from the area end 21 to the rear window cross member 13. The roof cross member 12 is arranged at a height of the B-pillar 8 along the body's longitudinal axis X. The second window area 20 serves as the rear window and is formed integrally with the first window area 19. In other words, the panoramic window 2 extending between the roof cross member 12 and the rear window cross member 13 is formed integrally, comprising two window areas 19, 20 with different functions and a different structure.

[0032] Furthermore, the second pane region 20 has a heat-insulating function, for example, it comprises an infrared-reflecting film or is equipped with an infrared-absorbing agent. The film can be inserted into the second pane region 20, or the second pane region 20 can be coated with the film.

[0033] An antenna is integrated into the first pane area and / or the second pane area 20. The antenna could also be designed as a transparent antenna. The first pane area 19 and / or the second pane area 20 are also heatable. The second pane area 20 could also have a so-called A-PVB film for acoustic reduction and a tinting layer.

[0034] In an embodiment not shown in detail, the second pane area 20 has a defined light transmittance for an additional brake light. Likewise, the first pane area 19 could also have the defined light transmittance for the additional brake light.

[0035] The panoramic sliding door 2 has in the first pane area 19 a free viewing field 22 with a first width B1, which is smaller than a second width B2 of the viewing field 22 of the second pane area 20.

[0036] The windscreen 14 is designed to extend over the A-pillar 7 to the B-pillar 8 in order to provide an improved field of vision for a driver. List of reference symbols 1 motor vehicle body 2 panoramic windows 3 Shell 4 inmates 5 First row of seats 6 Second row of seats 7 A-pillar 8 B-pillar 9 C-pillar 10 Roof 11 Windscreen cross member 12 roof cross bars 13 Rear window cross member 14 Windscreen 15 Rear window 16 Coverage area 17 Sight arrow 18 Cladding 19 First disc area 20 Second disc area 21 End of range 22 viewing field B1 First Width B2 Second Width X Longitudinal body axis Y body transverse axis Z Body vertical axis QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 1 405 744 A1

[0003] DE 10 2011 013 320 A1

[0004] DE 10 2004 032 295 A1

[0005] DE 198 52 184 A1

[0006] DE 10 2010 025 203 A1

[0007] EP 1 859 975 A2

[0008]

Claims

[1] Motor vehicle body (1) with a panoramic window (2), wherein the motor vehicle body (1) comprises at least one first row of seats (5) closest to a front of the motor vehicle body (1) and a second row of seats (6) arranged behind the first row of seats (5) starting from the front along a longitudinal axis (X) of the motor vehicle body (1), and wherein the motor vehicle body (1) comprises a B-pillar (8), a roof (10) with a roof cross member (12), and a rear rear window cross member (13) arranged facing a rear of the motor vehicle body (1), wherein the panoramic window (2) has a first window region (19) and a second window region (20), wherein the first window region (19) extends from the roof cross member (12) to a region end (21) which is formed between the B-pillar (8) and the rear window cross member (13),and the second window area (20) extends from the area end (21) to the rear window cross member (13), wherein the roof cross member (12) is arranged at a height of the B-pillar (8) formed along the body longitudinal axis (X), , characterized by in that the first pane region (19) is designed according to a fixed glass pane having a fixed glass pane function and the second pane region (20) is designed according to a rear window having a rear window function, wherein the panoramic window (2) consisting of the two pane regions (19, 20) is designed in one piece. [2] Motor vehicle body (1) according to claim 1, characterized by that the first pane area (19) and / or the second pane area (20) consists of a thermal glass. [3] Motor vehicle body (1) according to claim 2, characterized by that the thermal glass is switchable. [4] Motor vehicle body (1) according to one of the preceding claims, characterized bythat the area end (21) corresponds to an end of a field of vision of occupants (4) of the first row of seats (5) and / or the second row of seats (6), or that the area end (21) corresponds to a virtual roof cross member (12) in the area of ​​the C-pillar (9). [5] Motor vehicle body (1) according to one of the preceding claims, characterized by that the first pane region (19) and / or the second pane region (20) consists of an outer glass, an inner glass and a connecting layer. [6] Motor vehicle body (1) according to one of the preceding claims, characterized by that the first pane area (19) and / or the second pane area (20) has a heat protection function. [7] Motor vehicle body (1) according to one of the preceding claims, characterized by that the first pane area (19) and / or the second pane area (20) has an acoustic function for acoustic reduction. [8] Motor vehicle body (1) according to one of the preceding claims, characterized by that the first pane area (19) and / or the second pane area (20) has a defined light transmittance for an additional brake light. [9] Motor vehicle body (1) according to one of the preceding claims, characterized by that the second pane area (20) has a tint. [10] Motor vehicle body (1) according to one of the preceding claims, characterized by that a windscreen (14) of the motor vehicle body (1) is designed to extend over the A-pillar (7) to the B-pillar (8).

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