A C-pillar-free roof rail structure, vehicle body structure and vehicle

Abstract

The application discloses a C-pillar-free upper side beam structure, a vehicle body structure and a vehicle, relates to the technical field of vehicle body structures, and discloses a C-pillar-free upper side beam structure, a vehicle body structure and a vehicle, which belong to the technical field of vehicle body structures. The upper side beam structure comprises an upper side beam front reinforcing outer plate, an upper side beam rear reinforcing outer plate, a sunroof reinforcing ring and a sunroof reinforcing cross beam. The upper side beam front reinforcing outer plate is arranged on the outer side of a B-pillar upper side beam inner plate, and the front end of the upper side beam front reinforcing outer plate is connected with the B pillar. The upper side beam rear reinforcing outer plate is arranged on the outer side of a D-pillar upper side beam inner plate, and the rear end of the upper side beam rear reinforcing outer plate is connected with the D pillar. The sunroof reinforcing ring is connected with the upper side beam front reinforcing outer plate and the upper side beam rear reinforcing outer plate. The sunroof reinforcing cross beam is arranged on the upper side of the sunroof reinforcing ring. The rear end of the upper side beam front reinforcing outer plate is connected with the front end of the upper side beam rear reinforcing outer plate, and the connection position is located at the middle position of the sunroof reinforcing cross beam. The application can strengthen the upper side beam structure between the B pillar and the D pillar, reduce the deformation of the rear part of the B pillar during side collision, and meet the side collision performance requirements of the C-pillar-free vehicle body.

Description

Technical Field

[0001] This invention relates to the field of vehicle body structure technology, and in particular to a C-pillar-free upper beam structure, vehicle body structure, and vehicle. Background Technology

[0002] The main components of a car body include the body shell, doors, windows, front sheet metal parts, interior and exterior trim and accessories, seats, and ventilation, heating, cooling, and air conditioning systems. Among these, the upper beam structure is a crucial component affecting passive safety; its quality directly impacts collision safety.

[0003] In existing technologies, the upper beam structure of traditional vehicle bodies is typically supported by A-pillars, B-pillars, C-pillars, and D-pillars, which can meet the side impact performance requirements of the vehicle body. With changing demands, the market has seen a demand for vehicles without a C-pillar.

[0004] However, simply eliminating the C-pillar from the upper side beam structure of existing traditional vehicle bodies makes it difficult to meet the side impact performance requirements. Therefore, improvements to the upper side beam structure are necessary. Summary of the Invention

[0005] This invention provides a C-pillar-free upper beam structure, a vehicle body structure, and a vehicle to solve the technical problem that the existing C-pillar upper beam structure of ordinary vehicle models cannot meet the side impact performance requirements of C-pillar-free vehicle models.

[0006] Firstly, a top beam structure without C-columns is provided, including:

[0007] The upper beam front reinforcing outer plate is located on the outside of the inner plate of the upper beam of the B column, and the front end of the upper beam front reinforcing outer plate is connected to the B column.

[0008] The upper beam rear reinforcing outer plate is located on the outside of the inner plate of the upper beam of column D, and the rear end of the upper beam rear reinforcing outer plate is connected to column D.

[0009] The sunroof reinforcing ring is connected to the front reinforcing outer plate of the upper beam and the rear reinforcing outer plate of the upper beam;

[0010] The skylight reinforcing crossbeam is located on the upper side of the skylight reinforcing ring; and

[0011] The rear end of the front reinforcing outer plate of the upper beam is connected to the front end of the rear reinforcing outer plate of the upper beam, and the connection position is located in the middle of the skylight reinforcing crossbeam.

[0012] In some embodiments, the C-column-free upper beam structure further includes:

[0013] The rear safety handle mounting plate is connected to the inner side of the inner plate of the upper side beam of the B-pillar and the sunroof reinforcing ring.

[0014] In some embodiments, the side of the rear safety handle mounting plate is welded to the inner side of the inner plate of the upper side beam of the B-pillar.

[0015] In some embodiments, the front end of the rear safety handle mounting plate is connected to the sunroof reinforcing ring by a first bolt.

[0016] In some embodiments, the rear safety handle mounting plate has a protrusion facing inwards, and the protrusion has a process through hole. The inner plate of the upper side beam of the D-pillar, the outer reinforcing plate of the upper side beam, and the sunroof reinforcing ring are connected through the process through hole using a second bolt.

[0017] In some embodiments, the rear safety handle mounting plate has a predetermined overlap length with the front reinforcing outer plate of the upper side beam and the rear reinforcing outer plate of the upper side beam along the longitudinal direction of the vehicle.

[0018] In some embodiments, the outer reinforcing plate of the upper beam is also connected to the outer side of the inner plate of the upper beam of the B-pillar to form a first cavity structure.

[0019] In some embodiments, the outer side of the sunroof reinforcing ring is connected to the sunroof reinforcing beam to form a second cavity structure.

[0020] Secondly, a C-pillar-free body structure is provided, including the aforementioned C-pillar-free upper beam structure.

[0021] Thirdly, a vehicle is provided, including the aforementioned C-pillarless body structure.

[0022] The beneficial effects of the technical solution provided by this invention include:

[0023] This invention provides a C-pillar-less upper side beam structure, a vehicle body structure, and a vehicle. The upper side beam includes a front reinforcing outer plate, a rear reinforcing outer plate, and a sunroof reinforcing crossbeam. The front reinforcing outer plate is located outside the inner plate of the upper side beam at the B-pillar, and the rear reinforcing outer plate is located outside the inner plate of the upper side beam at the D-pillar. The rear end of the front reinforcing outer plate is connected to the front end of the rear reinforcing outer plate, with the connection point located in the middle of the sunroof reinforcing crossbeam. This arrangement improves the strength of the connection point between the front and rear reinforcing outer plates, strengthens the upper side beam structure between the B-pillar and D-pillar, reduces deformation of the rear of the B-pillar during a side impact, and meets the side impact performance requirements for C-pillar-less vehicles. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A front view of the upper beam structure without C-pillar provided in an embodiment of the present invention on the left side of the vehicle exterior;

[0026] Figure 2 A top-down view of the C-pillar-free upper beam structure provided in an embodiment of the present invention, viewed from the left side of the vehicle interior.

[0027] Figure 3 This is a top view of the upper beam structure without C-pillar provided in an embodiment of the present invention, viewed from the left side of the vehicle.

[0028] Figure 4 A front view of the upper beam structure without C-pillar provided in an embodiment of the present invention on the left side of the vehicle interior;

[0029] Figure 5 Provided for embodiments of the present invention Figure 4 A schematic diagram of section AA;

[0030] Figure 6 Provided for embodiments of the present invention Figure 4 A schematic diagram of the BB section;

[0031] Figure label:

[0032] 1. Reinforced outer plate in front of the upper beam;

[0033] 2. Reinforcing outer plate behind the upper beam; 201. First cavity structure;

[0034] 3. Sunroof reinforcing ring; 301. Second cavity structure;

[0035] 4. Reinforce the skylight beam;

[0036] 5. Rear safety handle mounting plate; 501. Protrusion; 502. Process through hole;

[0037] 6. Inner slab of the upper beam of column B;

[0038] 7. Inner slab of the upper beam of column D;

[0039] 8. First bolt;

[0040] 9. Second bolt;

[0041] 10. Column B;

[0042] 11. Column D;

[0043] 12. Reinforcing plate for the left rear triangular window. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] This invention provides a C-pillar-free upper beam structure, which solves the technical problem that the existing C-pillar upper beam structure of ordinary vehicles cannot meet the side impact performance requirements of C-pillar-free vehicles.

[0046] See Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the invention provides a top beam structure without C-columns, including: a front reinforcing outer plate 1 for the top beam, a rear reinforcing outer plate 2 for the top beam, a skylight reinforcing ring 3, and a skylight reinforcing crossbeam 4.

[0047] The front reinforcing outer plate 1 of the upper beam is located on the outside of the inner plate 6 of the upper beam of column B, and the front end of the front reinforcing outer plate 1 of the upper beam is connected to column B 10. The rear reinforcing outer plate 2 of the upper beam is located on the outside of the inner plate 7 of the upper beam of column D, and the rear end of the rear reinforcing outer plate 2 of the upper beam is connected to column D 11.

[0048] The sunroof reinforcing ring 3 is connected to the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper beam. The sunroof reinforcing crossbeam 4 is located on the upper side of the sunroof reinforcing ring 3.

[0049] The rear end of the front reinforcing outer plate 1 of the upper beam is connected to the front end of the rear reinforcing outer plate 2 of the upper beam, and the connection position is located in the middle of the skylight reinforcing crossbeam 4.

[0050] Specifically, Figure 1 This is a front view of the upper beam structure without a C-pillar on the left side of the vehicle. The left side is the B-pillar 10, and the right side is the D-pillar 11. Conventional models have a C-pillar between the left rear quarter window reinforcement plate 12 and the upper beam. This embodiment of the invention eliminates the C-pillar. Figure 2 In a top-down view from the left side of the vehicle, in this embodiment of the invention, the front reinforcing outer plate 1 of the upper beam is provided on the outer side of the inner plate 6 of the upper beam of the B pillar, and the rear reinforcing outer plate 2 of the upper beam is provided on the outer side of the inner plate 7 of the upper beam of the D pillar, forming a left rear door ring structure. Figure 3This embodiment of the invention provides a top-down view of the upper beam structure without a C-pillar from the left side of the vehicle. The front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper beam are connected to the sunroof reinforcing ring 3. These plates can transfer lateral loads to the sunroof reinforcing ring 3. Simultaneously, a sunroof reinforcing crossbeam 4 is provided on the upper side of the sunroof reinforcing ring 3 to increase the structural strength of the sunroof.

[0051] The upper beam structure without a C-pillar in this embodiment of the invention includes a front reinforcing outer plate, a rear reinforcing outer plate, and a sunroof reinforcing crossbeam. The front reinforcing outer plate is located on the outside of the inner plate of the upper beam of the B-pillar, and the rear reinforcing outer plate is located on the outside of the inner plate of the upper beam of the D-pillar. The rear end of the front reinforcing outer plate is connected to the front end of the rear reinforcing outer plate, and the connection position is located in the middle of the sunroof reinforcing crossbeam. This arrangement can improve the strength of the connection position between the front and rear reinforcing outer plates, strengthen the upper beam structure between the B-pillar and D-pillar, reduce the deformation of the rear of the B-pillar during a side impact, and meet the side impact performance requirements of C-pillarless vehicle models.

[0052] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 As shown, the upper beam structure without C-pillar also includes: a rear safety handle mounting plate 5, which is connected to the inner side of the inner plate 6 of the upper beam of B-pillar and the sunroof reinforcing ring 3. This arrangement can improve the installation rigidity of the rear safety handle mounting plate 5 and strengthen the upper beam structure between B-pillar and D-pillar, reducing the deformation of the rear of B-pillar during a side collision.

[0053] Specifically, see Figure 4 As shown, the side of the rear safety handle mounting plate 5 is welded to the inner side of the inner plate 6 of the upper side beam of the B-pillar. (See also...) Figure 5 As shown, the front end of the rear safety handle mounting plate 5 is connected to the sunroof reinforcing ring 3 by the first bolt 8, which improves the installation rigidity of the rear safety handle mounting plate 5 and strengthens the upper beam structure between the B-pillar and the D-pillar.

[0054] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 6As shown, the rear seat grab handle mounting plate 5 has a protrusion 501 facing inwards. The protrusion 501 has a process through hole 502, through which a second bolt 9 connects the inner plate 7 of the upper side beam of the D-pillar, the outer reinforcing plate 2 of the upper side beam, and the sunroof reinforcing ring 3. The protrusion 501 increases the strength of the rear seat grab handle mounting plate 5. Connecting the inner plate 7 of the upper side beam of the D-pillar, the outer reinforcing plate 2 of the upper side beam, and the sunroof reinforcing ring 3 through the process through hole 502 with the second bolt 9 further strengthens the upper side beam structure between the B-pillar and the D-pillar, reducing deformation of the rear of the B-pillar during a side impact.

[0055] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the rear seat grab handle mounting plate 5 has a preset overlap length with the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper side beam along the longitudinal direction of the vehicle. This arrangement means that the connection position of the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper side beam is also located in the middle of the rear seat grab handle mounting plate 5. During a side collision, this ensures that the force on the B-pillar is transferred to the sunroof reinforcing ring 3 through the rear seat grab handle mounting plate 5, thereby supporting the B-pillar and minimizing the deformation of the B-pillar during a side collision.

[0056] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 As shown, the outer reinforcing plate 2 of the upper beam is also connected to the outer side of the inner plate 6 of the upper beam of the B-pillar to form a first cavity structure 201, which improves the side impact resistance of the upper beam structure.

[0057] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 As shown, the outer side of the sunroof reinforcing ring 3 is connected to the sunroof reinforcing beam 4 to form a second cavity structure 301, which improves the side impact resistance of the upper beam structure.

[0058] This invention also provides a C-pillarless vehicle body, including the aforementioned C-pillarless upper beam structure, see [link to previous document]. Figure 1 , Figure 2 and Figure 3 As shown, the upper beam structure without C-columns includes: a front reinforcing outer plate 1, a rear reinforcing outer plate 2, a skylight reinforcing ring 3, and a skylight reinforcing crossbeam 4.

[0059] The front reinforcing outer plate 1 of the upper beam is located on the outside of the inner plate 6 of the upper beam of column B, and the front end of the front reinforcing outer plate 1 of the upper beam is connected to column B 10. The rear reinforcing outer plate 2 of the upper beam is located on the outside of the inner plate 7 of the upper beam of column D, and the rear end of the rear reinforcing outer plate 2 of the upper beam is connected to column D 11.

[0060] The sunroof reinforcing ring 3 is connected to the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper beam. The sunroof reinforcing crossbeam 4 is located on the upper side of the sunroof reinforcing ring 3.

[0061] The rear end of the front reinforcing outer plate 1 of the upper beam is connected to the front end of the rear reinforcing outer plate 2 of the upper beam, and the connection position is located in the middle of the skylight reinforcing crossbeam 4.

[0062] Specifically, Figure 1 This is a front view of the upper beam structure without a C-pillar on the left side of the vehicle. The left side is the B-pillar 10, and the right side is the D-pillar 11. Conventional models have a C-pillar between the left rear quarter window reinforcement plate 12 and the upper beam. This embodiment of the invention eliminates the C-pillar. Figure 2 In a top-down view from the left side of the vehicle, in this embodiment of the invention, the front reinforcing outer plate 1 of the upper beam is provided on the outer side of the inner plate 6 of the upper beam of the B pillar, and the rear reinforcing outer plate 2 of the upper beam is provided on the outer side of the inner plate 7 of the upper beam of the D pillar, forming a left rear door ring structure. Figure 3 This embodiment of the invention provides a top-down view of the upper beam structure without a C-pillar from the left side of the vehicle. The front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper beam are connected to the sunroof reinforcing ring 3. These plates can transfer lateral loads to the sunroof reinforcing ring 3. Simultaneously, a sunroof reinforcing crossbeam 4 is provided on the upper side of the sunroof reinforcing ring 3 to increase the structural strength of the sunroof.

[0063] In this embodiment of the invention, the C-pillarless vehicle body has an upper beam structure comprising a front reinforcing outer plate, a rear reinforcing outer plate, and a sunroof reinforcing crossbeam. The front reinforcing outer plate is located on the outside of the inner plate of the upper beam of the B-pillar, and the rear reinforcing outer plate is located on the outside of the inner plate of the upper beam of the D-pillar. The rear end of the front reinforcing outer plate is connected to the front end of the rear reinforcing outer plate, and the connection position is located in the middle of the sunroof reinforcing crossbeam. This arrangement can improve the strength of the connection position between the front and rear reinforcing outer plates, strengthen the upper beam structure between the B-pillar and D-pillar, reduce the deformation of the rear of the B-pillar during a side impact, and meet the side impact performance requirements of C-pillarless vehicle bodies.

[0064] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 As shown, the upper beam structure without C-pillar also includes: a rear safety handle mounting plate 5, which is connected to the inner side of the inner plate 6 of the upper beam of B-pillar and the sunroof reinforcing ring 3. This arrangement can improve the installation rigidity of the rear safety handle mounting plate 5 and strengthen the upper beam structure between B-pillar and D-pillar, reducing the deformation of the rear of B-pillar during a side collision.

[0065] Specifically, see Figure 4 As shown, the side of the rear safety handle mounting plate 5 is welded to the inner side of the inner plate 6 of the upper side beam of the B-pillar. (See also...) Figure 5 As shown, the front end of the rear safety handle mounting plate 5 is connected to the sunroof reinforcing ring 3 by the first bolt 8, which improves the installation rigidity of the rear safety handle mounting plate 5 and strengthens the upper beam structure between the B-pillar and the D-pillar.

[0066] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 6 As shown, the rear seat grab handle mounting plate 5 has a protrusion 501 facing inwards. The protrusion 501 has a process through hole 502, through which a second bolt 9 connects the inner plate 7 of the upper side beam of the D-pillar, the outer reinforcing plate 2 of the upper side beam, and the sunroof reinforcing ring 3. The protrusion 501 increases the strength of the rear seat grab handle mounting plate 5. Connecting the inner plate 7 of the upper side beam of the D-pillar, the outer reinforcing plate 2 of the upper side beam, and the sunroof reinforcing ring 3 through the process through hole 502 with the second bolt 9 further strengthens the upper side beam structure between the B-pillar and the D-pillar, reducing deformation of the rear of the B-pillar during a side impact.

[0067] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the rear seat grab handle mounting plate 5 has a preset overlap length with the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper side beam along the longitudinal direction of the vehicle. This arrangement means that the connection position of the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper side beam is also located in the middle of the rear seat grab handle mounting plate 5. During a side collision, this ensures that the force on the B-pillar is transferred to the sunroof reinforcing ring 3 through the rear seat grab handle mounting plate 5, thereby supporting the B-pillar and minimizing the deformation of the B-pillar during a side collision.

[0068] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 As shown, the outer reinforcing plate 2 of the upper beam is also connected to the outer side of the inner plate 6 of the upper beam of the B-pillar to form a first cavity structure 201, which improves the side impact resistance of the upper beam structure.

[0069] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 As shown, the outer side of the sunroof reinforcing ring 3 is connected to the sunroof reinforcing beam 4 to form a second cavity structure 301, which improves the side impact resistance of the upper beam structure.

[0070] This invention also provides a C-pillarless vehicle, including the C-pillarless body as described in claim 9, wherein the C-pillarless body includes the aforementioned C-pillarless upper beam structure, see [link to relevant documentation]. Figure 1 , Figure 2and Figure 3 As shown, the upper beam structure without C-columns includes: a front reinforcing outer plate 1, a rear reinforcing outer plate 2, a skylight reinforcing ring 3, and a skylight reinforcing crossbeam 4.

[0071] The front reinforcing outer plate 1 of the upper beam is located on the outside of the inner plate 6 of the upper beam of column B, and the front end of the front reinforcing outer plate 1 of the upper beam is connected to column B 10. The rear reinforcing outer plate 2 of the upper beam is located on the outside of the inner plate 7 of the upper beam of column D, and the rear end of the rear reinforcing outer plate 2 of the upper beam is connected to column D 11.

[0072] The sunroof reinforcing ring 3 is connected to the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper beam. The sunroof reinforcing crossbeam 4 is located on the upper side of the sunroof reinforcing ring 3.

[0073] The rear end of the front reinforcing outer plate 1 of the upper beam is connected to the front end of the rear reinforcing outer plate 2 of the upper beam, and the connection position is located in the middle of the skylight reinforcing crossbeam 4.

[0074] Specifically, Figure 1 This is a front view of the upper beam structure without a C-pillar on the left side of the vehicle. The left side is the B-pillar 10, and the right side is the D-pillar 11. Conventional models have a C-pillar between the left rear quarter window reinforcement plate 12 and the upper beam. This embodiment of the invention eliminates the C-pillar. Figure 2 In a top-down view from the left side of the vehicle, in this embodiment of the invention, the front reinforcing outer plate 1 of the upper beam is provided on the outer side of the inner plate 6 of the upper beam of the B pillar, and the rear reinforcing outer plate 2 of the upper beam is provided on the outer side of the inner plate 7 of the upper beam of the D pillar, forming a left rear door ring structure. Figure 3 This embodiment of the invention provides a top-down view of the upper beam structure without a C-pillar from the left side of the vehicle. The front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper beam are connected to the sunroof reinforcing ring 3. These plates can transfer lateral loads to the sunroof reinforcing ring 3. Simultaneously, a sunroof reinforcing crossbeam 4 is provided on the upper side of the sunroof reinforcing ring 3 to increase the structural strength of the sunroof.

[0075] In this embodiment of the invention, the vehicle without a C-pillar has an upper side beam structure comprising a front reinforcing outer plate, a rear reinforcing outer plate, and a sunroof reinforcing crossbeam. The front reinforcing outer plate is located on the outside of the inner plate of the upper side beam of the B-pillar, and the rear reinforcing outer plate is located on the outside of the inner plate of the upper side beam of the D-pillar. The rear end of the front reinforcing outer plate is connected to the front end of the rear reinforcing outer plate, and the connection point is located in the middle of the sunroof reinforcing crossbeam. This arrangement can improve the strength of the connection point between the front and rear reinforcing outer plates, strengthen the upper side beam structure between the B-pillar and D-pillar, reduce the deformation of the rear of the B-pillar during a side collision, and meet the side collision performance requirements of vehicles without a C-pillar.

[0076] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 As shown, the upper beam structure without C-pillar also includes: a rear safety handle mounting plate 5, which is connected to the inner side of the inner plate 6 of the upper beam of B-pillar and the sunroof reinforcing ring 3. This arrangement can improve the installation rigidity of the rear safety handle mounting plate 5 and strengthen the upper beam structure between B-pillar and D-pillar, reducing the deformation of the rear of B-pillar during a side collision.

[0077] Specifically, see Figure 4 As shown, the side of the rear safety handle mounting plate 5 is welded to the inner side of the inner plate 6 of the upper side beam of the B-pillar. (See also...) Figure 5 As shown, the front end of the rear safety handle mounting plate 5 is connected to the sunroof reinforcing ring 3 by the first bolt 8, which improves the installation rigidity of the rear safety handle mounting plate 5 and strengthens the upper beam structure between the B-pillar and the D-pillar.

[0078] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 6 As shown, the rear seat grab handle mounting plate 5 has a protrusion 501 facing inwards. The protrusion 501 has a process through hole 502, through which a second bolt 9 connects the inner plate 7 of the upper side beam of the D-pillar, the outer reinforcing plate 2 of the upper side beam, and the sunroof reinforcing ring 3. The protrusion 501 increases the strength of the rear seat grab handle mounting plate 5. Connecting the inner plate 7 of the upper side beam of the D-pillar, the outer reinforcing plate 2 of the upper side beam, and the sunroof reinforcing ring 3 through the process through hole 502 with the second bolt 9 further strengthens the upper side beam structure between the B-pillar and the D-pillar, reducing deformation of the rear of the B-pillar during a side impact.

[0079] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the rear seat grab handle mounting plate 5 has a preset overlap length with the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper side beam along the longitudinal direction of the vehicle. This arrangement means that the connection position of the front reinforcing outer plate 1 and the rear reinforcing outer plate 2 of the upper side beam is also located in the middle of the rear seat grab handle mounting plate 5. During a side collision, this ensures that the force on the B-pillar is transferred to the sunroof reinforcing ring 3 through the rear seat grab handle mounting plate 5, thereby supporting the B-pillar and minimizing the deformation of the B-pillar during a side collision.

[0080] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 As shown, the outer reinforcing plate 2 of the upper beam is also connected to the outer side of the inner plate 6 of the upper beam of the B-pillar to form a first cavity structure 201, which improves the side impact resistance of the upper beam structure.

[0081] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 As shown, the outer side of the sunroof reinforcing ring 3 is connected to the sunroof reinforcing beam 4 to form a second cavity structure 301, which improves the side impact resistance of the upper beam structure.

[0082] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0083] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0084] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A top beam structure without C-columns, characterized in that, include: The upper beam front reinforcing outer plate (1) is located on the outside of the upper beam inner plate (6) of the B column, and the front end of the upper beam front reinforcing outer plate (1) is connected to the B column (10). The upper beam rear reinforcing outer plate (2) is located on the outside of the upper beam inner plate (7) of column D, and the rear end of the upper beam rear reinforcing outer plate (2) is connected to column D (11). The sunroof reinforcing ring (3) is connected to the front reinforcing outer plate (1) of the upper beam and the rear reinforcing outer plate (2) of the upper beam; The skylight reinforcing beam (4) is located on the upper side of the skylight reinforcing ring (3); and The rear end of the upper beam front reinforcing outer plate (1) is connected to the front end of the upper beam rear reinforcing outer plate (2), and the connection position is located in the middle of the skylight reinforcing crossbeam (4). The rear safety handle mounting plate (5) is connected to the inner side of the upper side beam inner plate (6) of the B-pillar and the sunroof reinforcing ring (3). The rear safety handle mounting plate (5) has a protrusion (501) facing the inside of the vehicle. The protrusion (501) has a process through hole (502). The upper side beam inner plate (7), the upper side beam rear reinforcing outer plate (2) and the sunroof reinforcing ring (3) are connected through the process through hole (502) using a second bolt (9). The rear safety handle mounting plate (5) has a preset overlap length with the front reinforcing outer plate (1) of the upper side beam and the rear reinforcing outer plate (2) of the upper side beam in the front-rear direction of the vehicle.

2. The C-column-free upper beam structure according to claim 1, characterized in that: The side of the rear safety handle mounting plate (5) is welded to the inner side of the inner plate (6) of the upper side beam of the B-pillar.

3. The C-column-free upper beam structure according to claim 1, characterized in that: The front end of the rear safety handle mounting plate (5) is connected to the sunroof reinforcing ring (3) by the first bolt (8).

4. The C-column-free upper beam structure according to claim 1, characterized in that: The upper beam rear reinforcing outer plate (2) is also connected to the outer side of the upper beam inner plate (6) of the B column to form a first cavity structure (201).

5. The C-column-free upper beam structure according to claim 1, characterized in that: The outer side of the sunroof reinforcing ring (3) is connected to the sunroof reinforcing beam (4) to form a second cavity structure (301).

6. A C-pillarless vehicle body structure, characterized in that, Includes the top beam structure without C-columns as described in any one of claims 1-5.

7. A vehicle without a C-pillar, characterized in that, Including the C-pillarless vehicle body structure as described in claim 6.

Images