WO2023066031A1 - 一种中后地板架构 - Google Patents

一种中后地板架构 Download PDF

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Publication number
WO2023066031A1
WO2023066031A1 PCT/CN2022/123853 CN2022123853W WO2023066031A1 WO 2023066031 A1 WO2023066031 A1 WO 2023066031A1 CN 2022123853 W CN2022123853 W CN 2022123853W WO 2023066031 A1 WO2023066031 A1 WO 2023066031A1
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WO
WIPO (PCT)
Prior art keywords
floor
battery pack
crossbeam
middle floor
support part
Prior art date
Application number
PCT/CN2022/123853
Other languages
English (en)
French (fr)
Inventor
宋亚东
杜金星
孙开军
休利特·卡尔
南圣良
Original Assignee
浙江吉利控股集团有限公司
浙江翼真汽车研究开发有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202122503049.7U external-priority patent/CN216185521U/zh
Priority claimed from CN202122503116.5U external-priority patent/CN216185522U/zh
Priority claimed from CN202111209385.9A external-priority patent/CN113734297A/zh
Application filed by 浙江吉利控股集团有限公司, 浙江翼真汽车研究开发有限公司 filed Critical 浙江吉利控股集团有限公司
Priority to EP22882641.8A priority Critical patent/EP4292907A1/en
Publication of WO2023066031A1 publication Critical patent/WO2023066031A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/157—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body for side impacts

Definitions

  • the present disclosure relates to the field of vehicles, in particular to a middle and rear floor structure.
  • the middle floor In order to ensure that the vehicle can achieve the five-star safety goals of ENCAP (Euro-New Car Assessment Program, European New Car Assessment Program) and CNCAP (China-New Car Assessment Program, China New Car Assessment Program), especially for side impact and pillar impact, the middle floor
  • ENCAP Euro-New Car Assessment Program, European New Car Assessment Program
  • CNCAP China-New Car Assessment Program, China New Car Assessment Program
  • the middle floor and the rear floor In order to ensure that the vehicle can achieve the five-star safety goals of ENCAP (Euro-New Car Assessment Program, European New Car Assessment Program) and CNCAP (China-New Car Assessment Program, China New Car Assessment Program), especially for side impact and pillar impact, the middle floor The door sills are subjected to the maximum force load, while the floor beams in the interior are subjected to the transmission of forces.
  • the middle and rear floor structure of the car body generally the middle floor and the rear floor cannot be flush, and the middle floor beams are arranged in the car, which takes up more space in the car, so it is necessary to provide an improved middle
  • An embodiment of the present disclosure provides a middle and rear floor structure, including a middle floor frame structure and a battery pack, the middle floor frame structure includes a beam assembly and a longitudinal beam assembly, the battery pack is installed under the cross beam assembly, The beam assembly and the battery pack are supported by the longitudinal beam assembly.
  • the middle and rear floor structure further includes a middle floor, a rear floor, and a seat well, the middle floor is installed above the beam assembly, and the middle floor, the rear floor and the seat The seat wells are connected in sequence, and the beam assembly, the battery pack, the middle floor, the rear floor and the seat well are all supported by the longitudinal beam assembly.
  • the longitudinal beam assembly includes a first sill beam and a second sill beam
  • the cross beam assembly includes a first middle floor cross beam, a second middle floor cross beam and a third middle floor cross beam, the first middle floor cross beam
  • Both ends of the floor crossbeam, the second middle floor crossbeam and the third middle floor crossbeam are respectively connected to the first door sill beam and the second door sill beam through middle floor crossbeam connecting brackets.
  • the battery pack is installed under the first middle floor crossbeam, the second middle floor crossbeam and the third middle floor crossbeam, and the two ends of the battery pack are respectively connected to the first middle floor crossbeam.
  • a rocker beam and the second rocker beam are respectively connected to the first middle floor crossbeam.
  • both the first sill beam and the second sill beam are provided with a battery pack fixing point on the longitudinal beam, and the battery pack is fixed on the battery pack fixing point on the longeron beam.
  • the first middle floor crossbeam, the second middle floor crossbeam and the third middle floor crossbeam are all provided with a crossbeam battery pack fixing point, and the battery pack is fixed on the longitudinal beam battery pack fixing points and the beam battery pack fixing points.
  • both the first sill beam and the second sill beam are multi-cavity profile structures.
  • the first sill beam and the second sill beam respectively include a crossbeam support part and a battery support part connected to each other, the crossbeam support part is located above the battery support part, and the crossbeam
  • the cross-section of the support part is a hollow quadrilateral, the cross-section of the battery support part is porous grid-like, one side of the beam support part is connected to the middle floor beam connection bracket, one side of the battery support part is connected to the the battery pack described above.
  • the battery support part includes a first-layer support part, a second-layer support part and a bottom connection part connected in sequence, and the first-layer support part, the second-layer support part and the bottom
  • the section of the connection part includes one or more polygonal lattices.
  • the cross-section of the first-layer support part includes two interconnected polygonal lattices
  • the cross-section of the second-layer support part includes three sequentially connected polygonal lattices
  • the cross-section of the bottom connecting part includes Two polygon grids.
  • the middle floor beam connection bracket includes a first angled connection plate, a second angled connection plate and a bottom fixing plate, and the bottom fixing plate is fixedly connected to the first angled connection plate and the second angled connection plate respectively.
  • the bottom of the two-angle connecting plate forms a concave structure, and the tops of the first angle-shaped connecting plate and the second angle-shaped connecting plate are used to connect the first middle floor cross beam and the second middle floor cross beam Or the third middle floor cross beam, the sides of the first angled connecting plate and the second angled connecting plate are used to connect the first door sill beam or the second door sill beam.
  • the tops of the first angled connecting plate and the second angled connecting plate are provided with a first connecting page
  • the first middle floor beam, the second middle floor beam and the Both sides of the top of the third middle floor crossbeam are correspondingly provided with a second connecting page
  • the first middle floor crossbeam, the second middle floor crossbeam or the third middle floor crossbeam are located at the first angular connection between the board and the second angular connecting plate
  • the second connecting page is connected to the first connecting page
  • the side bottoms of the first angular connecting plate and the second angular connecting plate are connected with Three connecting pages
  • the third connecting page is used for connecting the first threshold beam or the second threshold beam.
  • the first sill beam and the second sill beam are connected to the battery pack by bolts.
  • the tops of the first middle floor beam, the second middle floor beam and the third middle floor beam are all connected to the middle floor.
  • the middle floor and the rear floor are used for installing the second row of seats and the third row of seats, and the seat well is used for installing the fourth row of seats.
  • the upper surfaces of the middle floor and the rear floor are laid with seat long slide rails.
  • the battery pack is installed under the beam assembly and supported by the longitudinal beam assembly, so that the vehicle body floor can be set as a flat floor, and the structural strength of the battery pack is utilized to enhance the rigidity of the vehicle.
  • the present disclosure sets up a seat well at the rear of the car body, which can realize the storage of the fourth row of seats, so that the seat well can be used when the fourth row of seats is set. It can be used for riding or for storage in the seat well when the fourth row of seats is folded down in the seat well, or for storage in the seat well when the fourth row of seats is not installed.
  • the body floor adopts a flat floor design structure, which can be laid with long seat slide rails to realize the common rail linkage of the second row and third row passenger seats. On the whole, large seating space and large storage space are realized, which is flexible and changeable.
  • the left and right sill beams with high design and large layout spacing can realize a wider and higher battery pack layout; in order to install batteries, the mid-floor sill beams are designed with battery pack installation points to realize battery pack installation.
  • the package is fixed as a whole, so that the battery and the body are integrated, and at the same time, the torsional and bending rigidity of the body is greatly improved.
  • the rear floor and seats can be flipped into the pit: the longitudinal beams and beams of the rear floor are arranged at the lower part of the floor to realize the upper flat floor, and a deep pit is designed at the rear of the rear floor, which can be used for both storage and seats Flip over into the pit and level with the upper part of the floor.
  • the reinforcement and padding of this flip seat With the reinforcement and padding of this flip seat, the crashworthiness of the rear of the floor can be greatly improved, and the rear NVH (Noise Vibration Harshness, noise, vibration and harshness) vibration and noise can be reduced.
  • the multi-cavity profile structure is used as the beam support part and the battery support part.
  • the cross-section of the beam support part is a hollow quadrilateral, and the cross-section of the battery support part is a porous grid shape.
  • the beam support part will collapse first, and transmit the side impact force to each mid-floor beam to reduce the force on the battery pack;
  • the battery support part is relatively stable, which can not only provide a certain amount of side impact resistance through the battery pack, but also When the car body is subjected to excessive side impact force, it can perform collapse energy absorption to protect the battery pack.
  • FIG. 1 is a schematic diagram of the overall structure of a middle and rear floor structure provided in an embodiment of the present disclosure
  • Fig. 2 is a structure diagram of the bottom beam frame of the middle and rear floor of a middle and rear floor structure provided in an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of the distribution of fixed points of the battery pack in Fig. 2;
  • Fig. 4 is A-A sectional view in Fig. 2;
  • Fig. 5 is a C-C sectional view in Fig. 2;
  • Fig. 6 is a schematic diagram of a deformed structure of a seat well provided in an embodiment of the present disclosure
  • Fig. 7 is a schematic diagram of a side impact force transmission direction of a middle rear floor structure provided in an embodiment of the present disclosure
  • Fig. 8 is a B-B sectional view among Fig. 7;
  • Fig. 9 is an exploded view of a connection part between a threshold beam and a mid-floor beam provided in an embodiment of the present disclosure.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present disclosure, “plurality” means two or more, unless otherwise specifically defined.
  • horizontal does not imply that a component is absolutely level or overhanging, but may be slightly inclined.
  • horizontal only means that its direction is more horizontal than “vertical”, and it does not mean that the structure must be completely horizontal, but can be slightly inclined.
  • the battery is generally arranged under the front center floor, and the battery is located between the battery pack installation beam and the floor. And in order to meet the requirements of cruising range, it is necessary to arrange as many power batteries as possible. In order to ensure the rigidity and strength of the battery pack installation point, the size of the cavity formed by the battery pack installation beam and the floor needs to be as large as possible. Therefore, the floor of the electric vehicle needs to be arranged on the upper side, and the downward movement of the floor is severely restricted.
  • the battery pack installation beam and the floor are both supported by the threshold, so there is a certain drop between the battery pack installation beam and the threshold, and the overlap between the battery pack installation beam and the threshold is low, making it difficult to achieve the safety goal of a collision star.
  • the force transmission path of the front impact will basically pass the force through the middle longitudinal beam and the sill beam.
  • the battery pack installation beam and the middle floor beam in this area cannot be used universally.
  • cross beams are generally arranged up and down for storage space, etc., but current vehicles may require more seats to meet the needs of more passengers to travel together, so there is an urgent need for a A flexible car body structure that can increase the number of seats.
  • this embodiment provides a middle and rear floor structure, including a middle floor frame structure and a battery pack 7, and the middle floor frame structure includes a beam assembly (such as shown in FIG. 7, the middle floor beam 3, the middle floor beam 4, the middle floor beam 5) and the longitudinal beam assembly (such as the first door sill beam 1 and the second door sill beam 2 shown in FIG. 7), the battery pack 7 is installed on Below the beam assembly, both the beam assembly and the battery pack 7 are supported by the longitudinal beam assembly.
  • the battery pack is installed under the beam assembly and supported by the longitudinal beam assembly, so that the vehicle body floor can be set as a flat floor, and the structural strength of the battery pack can be used to enhance the rigidity of the vehicle.
  • this embodiment provides a middle and rear floor structure, including a middle floor 8, a rear floor 9, a seat well 10, a frame structure of the middle floor and
  • the battery pack 7, the middle floor frame structure includes a beam assembly and a longitudinal beam assembly, the battery pack 7 is installed below the beam assembly, the middle floor 8 is installed above the cross beam assembly, the middle floor 8, the rear floor 9 and the seat well 10 are sequentially Connection, the beam assembly, the battery pack 7, the middle floor 8, the rear floor 9 and the seat well 10 are all supported by the longitudinal beam assembly.
  • the middle floor 8 and the rear floor 9 are used for installing the second row of seats and the third row of seats, and the seat well 10 is used for installing the fourth row of seats.
  • the upper surface of the middle floor 8 is laid with seat long slide rails. Laying long seat slide rails can realize the common rail linkage of the second row and third row passenger seats, and the structure is flexible.
  • the present disclosure sets a seat well 10 at the rear of the car body, which can realize the folding and storage of the fourth row of seats, so that the seat well 10 can be used when the fourth row of seats is set. It can be used for riding or for storage in the seat well when the fourth row of seats is folded down in the seat well, or for storage in the seat well when the fourth row of seats is not installed.
  • the body floor adopts the design structure of the middle floor 8, and the seat long slide rail can be laid to realize the common rail linkage of the second row and the third row of passenger seats, and realize large passenger space and large storage space as a whole, which is flexible and changeable
  • the present disclosure installs the battery pack 7 under the beam assembly and is supported by the longitudinal beam assembly, so that the vehicle body floor can be set as the middle floor 8, and the structural strength of the battery pack 7 can be used to enhance the rigidity of the vehicle.
  • the longitudinal beam assembly includes a first sill beam 1 and a second sill beam 2
  • the cross beam assembly includes a first middle floor cross beam 3 , a second middle floor cross beam 4 and a third middle floor cross beam.
  • Middle floor crossbeam 5 wherein, both ends of the first middle floor crossbeam 3, the second middle floor crossbeam 4 and the third middle floor crossbeam 5 are respectively connected to the first threshold through the middle floor crossbeam connecting bracket 6 (as shown in FIG. 8 ) Beam 1 and second sill beam 2.
  • the first middle floor crossbeam 3, the second middle floor crossbeam 4 and the third middle floor crossbeam 5 are arranged parallel to each other, the first threshold beam 1 and the second threshold beam 2 are arranged parallel to each other, and the first threshold beam 1 and the second door sill beam 2 are respectively located on both sides of the first middle floor cross beam 3 , the second middle floor cross beam 4 and the third middle floor cross beam 5 .
  • a middle floor 8 can be installed above the first middle floor crossbeam 3 , the second middle floor crossbeam 4 and the third middle floor crossbeam 5 , so as to facilitate the movement of the seats.
  • a battery pack 7 is installed under the first middle floor crossbeam 3 , the second middle floor crossbeam 4 and the third middle floor crossbeam 5 , and the two ends of the battery pack 7 are connected to the first door sill beam 1 and the second floor crossbeam respectively.
  • Two sill beams 2 Two sill beams 2.
  • the battery pack 7 can be It is fixed on the fixing point 71 of the stringer battery pack.
  • two rows of six beam battery pack fixing points 72 are evenly arranged on each of the first middle floor beam 3 , the second middle floor beam 4 and the third middle floor beam 5 , that is, each Two beam battery pack fixing points 72 are arranged on the beam to fix the battery pack 7 together with the longitudinal beam battery pack fixing point 71, so as to realize the uniform fixing of the battery pack in blocks, so that the battery and the vehicle body are fixed to form an integrated body. Performance is greatly improved.
  • the arrows in Figure 2 are the transmission direction and path of the front impact force
  • the arrows in Figure 7 are the transmission direction and path of the side impact force.
  • only two longitudinal sill beams are set to carry the front impact force transmission, and the other longitudinal beams are not set, so that the three middle floor beams (the first middle floor beam 3, the second middle floor beam 4 and the third middle floor beam 5) have no
  • the specifications of other longitudinal beams can be shared to achieve generalization; in addition, the three mid-floor beams also take into account the battery installation space, the battery pack 7 is installed under each mid-floor beam, and the three mid-floor beams are connected to the two sides.
  • the sill beam connection when the car body is subjected to side impact force, not only the side impact force is transmitted by the center floor beam, but also a certain support is achieved through the structure of the battery pack 7, and the structural strength of the battery pack 7 is used to enhance the rigidity of the vehicle. It effectively protects the internal occupants and protects the battery.
  • the bottom of the rear floor 9 is provided with two rear floor crossbeams 91 (such as the rear floor crossbeam 911 and the rear floor Crossbeam 912), and as shown in Figure 2, the bottom of back floor 9 is provided with longitudinal distribution (for example A-A direction among Fig.
  • the rear floor longitudinal beam 921 is the structure that the first threshold beam 1 extends to the rear floor 9
  • the rear floor longitudinal beam 922 is the second threshold beam 2 extending toward the rear floor 9
  • the rear floor longitudinal beam 921 and the rear floor longitudinal beam 922 are used to support the rear floor board 9 and the seat well 10 .
  • the rear floor crossbeam 911 and the rear floor crossbeam 912 are respectively located at the two ends of the rear floor 9 along the A-A direction, and the rear floor crossbeam 912 positioned at the tail end of the rear floor 9 also supports the seat well 10 at the same time, and the rear floor crossbeam 911 and the rear floor crossbeam 912 both It is at the same level as the first middle floor crossbeam 3 , the second middle floor crossbeam 4 and the third middle floor crossbeam 5 , so that the middle floorboard 8 is level with the rear floorboard 9 .
  • the seat pit 10 can be designed to be deeper to achieve more storage space. It can also realize the flushing of the upper part after turning the seat into the pit, improve the crashworthiness of the rear, and also realize the NVH (Noise Vibration Harshness, noise, vibration) of the rear. and acoustic roughness) vibration suppression and noise suppression.
  • NVH Noise Vibration Harshness, noise, vibration
  • the seat hole parts can be directly canceled, and the flat steel plate 93 can be added to the upper part, so as to meet different needs and quickly switch models, such as three-row seat models and four-row seats. Quick changeover of seat models.
  • the first sill beam 1 and the second sill beam 2 are multi-cavity profile structures.
  • aluminum profiles are used, and the first sill beam 1 and the second sill beam 2
  • Each includes a beam support part 11 and a battery support part 12 connected to each other, the beam support part 11 is located above the battery support part 12, the cross-section of the beam support part 11 is a hollow quadrilateral, and the cross-section of the battery support part 12 is a porous grid
  • One side of the crossbeam support part 11 is connected to the middle floor crossbeam connection bracket 6, and one side of the battery support part 12 is connected to the battery pack 7.
  • the first sill beam 1 and the second sill beam 2 each include a beam support part 11 and a battery support part 12, the cross-section of the beam support part 11 is a hollow quadrilateral, and the cross-section of the battery support part 12 is a porous grid
  • the arrows in the figure indicate the transmission direction and path of the side impact force.
  • the battery support part 12 includes a first layer support part 121, a second layer support part 122 and a bottom connection part 123 connected in sequence, the first layer support part 121, the second layer support part Sections of the part 122 and the bottom connection part 123 include one or more polygons.
  • the cross-section of the first-layer support part 121 includes two interconnected polygons
  • the cross-section of the second-layer support part 122 includes three sequentially connected polygons
  • the cross-section of the bottom connecting part 123 includes two polygons.
  • the middle floor beam connecting bracket 6 includes a first angled connecting plate 601, a second angled connecting plate 602 and a bottom fixing plate 603, and the bottom fixing plate 603 is fixedly connected to the first corners respectively.
  • the bottoms of the first angular connecting plate 601 and the second angular connecting plate 602 form a concave structure, and the tops of the first angular connecting plate 601 and the second angular connecting plate 602 are used to connect the first middle floor beam 3 and the second middle floor crossbeam.
  • the floor beam 4 or the third middle floor beam 5 , the sides of the first angled connecting plate 601 and the second angled connecting plate 602 are used to connect the first door sill beam 1 or the second door sill beam 2 .
  • the tops of the first angled connecting plate 601 and the second angled connecting plate 602 are all provided with a first connecting page 604, and the top sides of the first middle floor crossbeam 3, the second middle floor crossbeam 4 and the third middle floor crossbeam 5 Each is provided with a second connecting page 501 correspondingly, the first middle floor beam 3, the second middle floor beam 4 or the third middle floor beam 5 is located between the first angled connecting plate 601 and the second angled connecting plate 602, the second The second connection page 501 is connected to the first connection page 604 .
  • Both the bottoms of the sides of the first angled connecting plate 601 and the second angled connecting plate 602 are connected with a third connecting leaf 605 , and the third connecting leaf 605 is used for connecting the first door sill beam 1 or the second door sill beam 2 .
  • the angular mid-floor cross beam connection bracket 6 can realize the oblique conduction of the side impact force, and to a certain extent make the cross beam bend upward when subjected to a large side impact force. Avoid damage to the battery, and the angular mid-floor crossbeam connecting bracket 6 can better match the crossbeam support part 11 in the multi-cavity profile structure to achieve the collapse effect, and also make the connection between the sill beam and the crossbeam more stable.
  • first sill beam 1 and the second sill beam 2 are connected to the battery pack 7 by bolts, and the battery pack 7 and the vehicle body are tightly connected by bolts, and the structural strength of the battery pack 7 is used to enhance the rigidity of the vehicle. Effectively protect the interior occupants in a collision and protect the battery.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

一种中后地板架构，包括中地板边框式结构和电池包（7），中地板边框式结构包括横梁组件和纵梁组件，电池包（7）安装在横梁组件的下方，横梁组件和电池包（7）均受纵梁组件支撑。该中后地板架构具有大空间及高性能，利用电池包（7）的结构强度，增强了整车的刚度。

Description

一种中后地板架构
相关申请交叉引用
本申请主张申请号为202111209385.9、申请日为2021年10月18日的中国专利申请的优先权,申请号为202122503116.5、申请日为2021年10月18日的中国专利申请的优先权，以及申请号为202122503049.7、申请日为2021年10月18日的中国专利申请的优先权，以上中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及车辆领域，尤其是涉及一种中后地板架构。
背景技术
为保证整车可以达成ENCAP(Euro-New Car Assessment Program，欧洲新车评估规程)及CNCAP(China-New Car Assessment Program，中国新车评价规程)五星安全目标，特别是针对侧碰及柱碰，中地板门槛承受最大力承载，而车内中地板横梁承受力传递。在车体的中后地板架构中，一般中地板和后地板不能做到齐平，且中地板横梁均布置在车内，占用较多的车内空间，因此需要提供一种改进的中后地板架构。
发明内容
本公开实施例提供一种中后地板架构，包括中地板边框式结构和电池包，所述中地板边框式结构包括横梁组件和纵梁组件，所述电池包安装在所述横梁组件的下方，所述横梁组件和所述电池包受所述纵梁组件支撑。
在一些实施例中，所述中后地板架构还包括中地板、后地板、座椅坑，所述中地板安装在所述横梁组件的上方，所述中地板、所述后地板和所述座椅坑依次连接，所述横梁组件、所述电池包、所述中地板、所述后地板和所述座椅坑均受所述纵梁组件支撑。
在一些实施例中，所述纵梁组件包括第一门槛梁和第二门槛梁，所述横梁组件包括第一中地板横梁、第二中地板横梁和第三中地板横梁，所述第一中地板横梁、所述第二中地板横梁和所述第三中地板横梁的两端均通过中地板横梁连接支架分别连接所述第一门槛梁和第二门槛梁。
在一些实施例中，所述第一中地板横梁、所述第二中地板横梁和所述第三中地板横梁的下方安装有所述电池包，所述电池包的两端分别连接所述第一门槛梁和所述第二门槛梁。
在一些实施例中，所述第一门槛梁和所述第二门槛梁均设有纵梁电池包固定点，所述电池包固定在所述纵梁电池包固定点上。
在一些实施例中，所述第一中地板横梁、所述第二中地板横梁和所述第三中地板横梁上均设有横梁电池包固定点，所述电池包固定在所述纵梁电池包固定点和所述横梁电池包固定点上。
在一些实施例中，所述第一门槛梁和所述第二门槛梁均为多空腔型材结构。
在一些实施例中，所述第一门槛梁和所述第二门槛梁各自分别包括相互连接的横梁支撑部和电池支撑部，所述横梁支撑部位于所述电池支撑部的上方，所述横梁支撑部的截面为中空的四边形，所述电池支撑部的截面为多孔的网格状，所述横梁支撑部的一侧连接所述中地板横梁连接支架，所述电池支撑部的一侧连接所述电池包。
在一些实施例中，所述电池支撑部包括依次连接的第一层支撑部、第二层支撑部和底部连接部，所述第一层支撑部、所述第二层支撑部和所述底部连接部的截面包括一个或多个多边形的格子。
在一些实施例中，所述第一层支撑部的截面包括两个相互连接的多边形格子，所述第二层支撑部的截面包括三个依次连接的多边形格子，所述底部连接部的截面包括两个多边形格子。
在一些实施例中，所述中地板横梁连接支架包括第一角状连接板、第二角状连接板和底部固定板，所述底部固定板分别固定连接所述第一角状连接板和第二角状连接板的底部，形成凹字形结构，所述第一角状连接板和所述第二角状连接板的顶部用于连接所述第一中地板横梁、所述第二中地板横梁或所述第三中地板横梁，所述第一角状连接板和所述第二角状连接板的侧边用于连接所述第一门槛梁或第二门槛梁。
在一些实施例中，所述第一角状连接板和所述第二角状连接板的顶部均设有第一连接页，所述第一中地板横梁、所述第二中地板横梁和所述第三中地板横梁的顶部两侧均对应设有第二连接页，所述第一中地板横梁、所述第二中地板横梁或所述第三中地板横梁位于所述第一角状连接板和第二角状连接板之间，所述第二连接页连接所述第一连接页；所述第一角状连接板和所述第二角状连接板的侧边底部均连接有第三连接页，该第 三连接页用于连接所述第一门槛梁或第二门槛梁。
在一些实施例中，所述第一门槛梁和所述第二门槛梁通过螺栓连接所述电池包。
在一些实施例中，所述第一中地板横梁、第二中地板横梁和第三中地板横梁的顶部均连接有所述中地板。
在一些实施例中，所述中地板和所述后地板用于安装第二排座椅和第三排座椅，所述座椅坑用于安装第四排座椅。
在一些实施例中，所述中地板和所述后地板的上表面铺设有座椅长滑轨。
本公开具有以下优点：
(1)本公开将电池包安装在横梁组件的下方，并受纵梁组件支撑，既使得车身地板可以设置为平地板，又利用了电池包的结构强度增强了整车的刚度。此外，为满足较多乘员共同出行的要求，本公开在车体后部设置了座椅坑，可实现第四排座椅放倒收纳，从而使座椅坑在设置第四排座椅时既可用于乘坐也可以在第四排座椅放倒在座椅坑中时用于在座椅坑上储物，或者不设置第四排座椅时在座椅坑内储物。车身地板采用平地板设计结构，可铺设座椅长滑轨以实现第二排、第三排乘员座椅的共轨联动，整体上实现大的乘坐空间及大的储物空间，灵活多变。
(2)地板轻量化、通用化：本公开针对车体的前碰传力，仅设置两个纵向的门槛梁承载前碰力传递，不设置其余纵梁，实现轻量化设计，并使得三个中地板横梁没有其它纵梁的规格限制，可以共用以实现通用化，三个中地板横梁布置在中地板下部实现较好的侧碰力支撑，门槛梁采用多空腔铝型材实现较好的结构强度、侧碰抗弯及柱碰吸能。
(3)大空间及高性能：设计较高及布置间距较大的左右门槛梁，可以实现较宽较高的电池包布局；为了安装电池，中地板门槛梁设计有电池包安装点，实现电池包整体固定，使得电池与车身形成一体，同时大大提升车身的扭转、弯曲刚度。
(4)后地板、座椅可翻转入坑：后地板纵梁及横梁均布置在地板下部实现上部全平地板，在后地板尾部设计较深的地坑，既可储物也可实现座椅翻转后入坑并与地板上部齐平。有此翻转座椅加强及填充，可以大大提升地板后部的耐撞性，减少后部NVH(Noise Vibration Harshness，噪声、振动与声振粗糙度)振动及噪声。
(5)模块化：座椅坑区域可以快速取消坑的地板零件，增加上部钢板覆盖可以实现不同需求车型的快速开发切换。
(6)将多空腔型材结构用作横梁支撑部和电池支撑部，横梁支撑部的截面为中空的四边形，电池支撑部的截面为多孔的网格状，当车体受到较大的侧碰力时，横梁支撑部会首先发生溃缩，将侧碰力传导到各个中地板横梁上，减少电池包的受力；电池支撑部相对稳固，既能通过电池包提供一定的抗侧碰力，又能在车体受到过大的侧碰力时，进行溃缩吸能，保护电池包。
附图说明
图1为本公开实施例中提供的一种中后地板架构的整体结构示意图；
图2为本公开实施例中提供的一种中后地板架构的中后地板底部梁架结构图；
图3为图2中电池包固定点的分布示意图；
图4为图2中的A-A截面图；
图5为图2中的C-C截面图；
图6为本公开实施例中提供的一种座椅坑的变形结构示意图；
图7为本公开实施例中提供的一种中后地板架构的侧碰力传导方向示意图；
图8为图7中的B-B截面图；
图9为本公开实施例中提供的一种门槛梁与中地板横梁的连接零件爆炸图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本公开实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本公开的实施例的详细描述并非旨在限制要求保护的本公开的范围，而是仅仅表示本公开的选定实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本公开的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、 “竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
需要说明的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
此外，术语“水平”、“竖直”等术语并不表示要求部件绝对水平或悬垂，而是可以稍微倾斜。如“水平”仅仅是指其方向相对“竖直”而言更加水平，并不是表示该结构一定要完全水平，而是可以稍微倾斜。
针对纯电车型，一般电池布置在前中地板下方，电池位于电池包安装横梁与地板之间。并且为了满足续航里程的要求，需要尽可能多地布置动力电池。为了保证电池包安装点的刚度和强度，电池包安装横梁与地板组成的腔体尺寸也需要尽可能的大，因此电动汽车的地板需要靠上布置，地板下移受到严重限制。
而电池包安装横梁与地板均受门槛支撑，这样电池包安装横梁与门槛存在一定落差，电池包安装横梁与门槛的重合度较低，对碰撞星级安全目标实现难度较大。另外前碰传力路径基本会通过中部纵梁及门槛梁传力，一般此区域电池包安装横梁和中地板横梁均无法通用。
另外，对于车体的后地板区域，一般上下布置横梁，用于作为储物空间等，而目前的车辆可能需求更多的座椅，以满足更多乘员的共同出行，因此也迫切需要一种能增加座椅数量且灵活多变的车体结构。
在一个实施例中，如图7和图8所示，本实施例提供一种中后地板架构，包括中地板边框式结构和电池包7，所述中地板边框式结构包括横梁组件(例如图7中所示的中地板横梁3、中地板横梁4、中地板横梁5)和纵梁组件(例如图7中所示的第一门槛梁1和第二门槛梁2)，电池包7安装在横梁组件的下方，横梁组件和电池包7均受纵梁组件支撑。本公开将电池包安装在横梁组件的下方，并受纵梁组件支撑，可以既使得车身地板设置为平地板，又可以利用电池包的结构强度增强整车的刚度。
在另一个实施例中，如图1、图7和图8所示，本实施例提供一种中后地板架构，包括中地板8、后地板9、座椅坑10、中地板边框式结构和电池包7，中地板边框式结构包括横梁组件和纵梁组件，电池包7安装在横梁组件的下方，中地板8安装在横梁组件的上方，中地板8、后地板9和座椅坑10依次连接，横梁组件、电池包7、中地板8、 后地板9和座椅坑10均受纵梁组件支撑。
中地板8和后地板9用于安装第二排座椅和第三排座椅，座椅坑10用于安装第四排座椅。
在一些实施例中，中地板8的上表面铺设有座椅长滑轨。铺设座椅长滑轨可实现第二排、第三排乘员座椅的共轨联动，结构灵活。
为满足较多乘员共同出行的要求，本公开在车体后部设置了座椅坑10，可实现第四排座椅放倒收纳，以使座椅坑10在设置第四排座椅时既可用于乘坐也可以在第四排座椅放倒在座椅坑中时用于在座椅坑上储物，或者不设置第四排座椅时在座椅坑内储物。车身地板采用中地板8设计结构，可铺设座椅长滑轨以实现第二排、第三排乘员座椅的共轨联动，整体上实现大的乘坐空间及大的储物空间，灵活多变；另外本公开将电池包7安装在横梁组件的下方，并受纵梁组件支撑，可以既使得车身地板设置为中地板8，又可以利用电池包7的结构强度以增强整车的刚度。
在一些实施例中，如图2和图4所示，纵梁组件包括第一门槛梁1和第二门槛梁2，横梁组件包括第一中地板横梁3、第二中地板横梁4和第三中地板横梁5，其中，第一中地板横梁3、第二中地板横梁4和第三中地板横梁5的两端均通过中地板横梁连接支架6(如图8所示)分别连接第一门槛梁1和第二门槛梁2。
在本实施例中，第一中地板横梁3、第二中地板横梁4和第三中地板横梁5相互平行设置，第一门槛梁1和第二门槛梁2相互平行设置，第一门槛梁1和第二门槛梁2分别位于第一中地板横梁3、第二中地板横梁4和第三中地板横梁5的两侧。
第一中地板横梁3、第二中地板横梁4和第三中地板横梁5上方可安装中地板8，以便于座椅的移动。
在一些实施例中，第一中地板横梁3、第二中地板横梁4和第三中地板横梁5的下方安装有电池包7，该电池包7的两端分别连接第一门槛梁1和第二门槛梁2。
关于电池包7的安装固定，如图3所示，在本实施例中，除了第一门槛梁1和第二门槛梁2上均布置有纵梁电池包固定点71，所述电池包7可以固定在所述纵梁电池包固定点71上。在另一实施例中，第一中地板横梁3、第二中地板横梁4和第三中地板横梁5中的各个横梁上也均匀布置两排共六个横梁电池包固定点72，即每个横梁上布置有两个横梁电池包固定点72，用以和纵梁电池包固定点71一起固定所述电池包7，以实现电池包分块均匀固定，以使电池和车身固定后形成一体，性能大大提升。如图2和图7所示，图2中的箭头为前碰力的传导方向和路径，图7中的箭头为侧碰力的传导方向和路径，本实施例针对车体的前碰传力，仅设置两个纵向的门槛梁承载前碰力传递，不设置其余纵梁，使得三个中地板横梁(第一中地板横梁3、第二中地板横梁4和第三中地板横梁5)没有其它纵梁的规格限制，可以共用实现通用化；另外这三个中地板横梁还 兼顾电池安装空间，将电池包7安装在各个中地板横梁的下方，并将这三个中地板横梁与两侧门槛梁连接，在车体受到侧碰力时，不仅由中地板横梁实现侧碰力传导，还通过电池包7结构实现一定的支撑，利用电池包7的结构强度增强整车的刚度，在碰撞中有效保护内部乘员，并保护电池。
另外，如图2和图4所示，后地板9的底部设有横向分布(例如沿图7中的B-B方向)的两个后地板横梁91(例如图4中的后地板横梁911和后地板横梁912)，以及如图2所示，后地板9的底部设有纵向分布(例如图2中的A-A方向)在后地板9两侧的后地板纵梁92(例如图5中的后地板纵梁921和后地板纵梁922)，其中，后地板纵梁921为第一门槛梁1向后地板9延伸到后部的结构，后地板纵梁922为第二门槛梁2向后地板9延伸到后部的结构，后地板纵梁921及后地板纵梁922(即第一门槛梁1和第二门槛梁2)用以支撑后地板9和座椅坑10。后地板横梁911和后地板横梁912分别位于后地板9沿A-A方向的两端，位于后地板9的尾端的后地板横梁912还同时支撑座椅坑10，后地板横梁911和后地板横梁912均与第一中地板横梁3、第二中地板横梁4和第三中地板横梁5处于同一水平高度，使得中地板8与后地板9水平。
座椅坑10可设计较深，实现较多储物空间，也实现翻转座椅入坑后实现上部齐平，提升后部耐撞性，也可实现后部NVH(Noise Vibration Harshness，噪声、振动与声振粗糙度)振动抑制及噪声抑制。
如图6所示，可针对不同需求，比如整体全平地板需求时，直接取消座椅坑零件，上部增加平钢板93，即可满足不同需求车型快速切换，例如三排座椅车型和四排座椅车型的快速切换。
在一些实施方式中，如图8和图9所示，第一门槛梁1和第二门槛梁2为多空腔型材结构，本实施例采用铝型材，第一门槛梁1和第二门槛梁2各自包括相互连接的横梁支撑部11和电池支撑部12，横梁支撑部11位于电池支撑部12的上方，横梁支撑部11的截面为中空的四边形，电池支撑部12的截面为多孔的网格状，横梁支撑部11的一侧连接中地板横梁连接支架6，电池支撑部12的一侧连接电池包7。
本实施例中，第一门槛梁1和第二门槛梁2各自包括横梁支撑部11和电池支撑部12，横梁支撑部11的截面为中空的四边形，电池支撑部12的截面为多孔的网格状，如图7所示，图中箭头为侧碰力传导方向和路径，当车体受到较大的侧碰力时，第二门槛梁2的横梁支撑部11会首先发生溃缩，将侧碰力传导到各个中地板横梁上，减少电池包7的受力；电池支撑部12相对稳固，既能通过电池包7提供一定的抗侧碰力，又能在受到过大的侧碰力时，进行溃缩吸能，保护电池包7。
在一些实施例中，如图9所示，电池支撑部12包括依次连接的第一层支撑部121、第二层支撑部122和底部连接部123，第一层支撑部121、第二层支撑部122和底部连 接部123的截面包括一个或多个多边形。
在本实施例中，第一层支撑部121的截面包括两个相互连接的多边形，第二层支撑部122的截面包括三个依次连接的多边形，底部连接部123的截面包括两个多边形。
在一些实施方式中，如图9所示，中地板横梁连接支架6包括第一角状连接板601、第二角状连接板602和底部固定板603，底部固定板603分别固定连接第一角状连接板601和第二角状连接板602的底部，形成凹字形结构，第一角状连接板601和第二角状连接板602的顶部用于连接第一中地板横梁3、第二中地板横梁4或第三中地板横梁5，第一角状连接板601和第二角状连接板602的侧边用于连接第一门槛梁1或第二门槛梁2。
第一角状连接板601和第二角状连接板602的顶部均设有第一连接页604，第一中地板横梁3、第二中地板横梁4和第三中地板横梁5的顶部两侧均对应设有第二连接页501，第一中地板横梁3、第二中地板横梁4或第三中地板横梁5位于第一角状连接板601和第二角状连接板602之间，第二连接页501连接第一连接页604。
第一角状连接板601和第二角状连接板602的侧边底部均连接有第三连接页605，该第三连接页605用于连接第一门槛梁1或第二门槛梁2。
相比于直接将门槛梁与横梁连接，采用角状的中地板横梁连接支架6，能实现侧碰力的斜向传导，一定程度上使得横梁在受到大的侧碰力时，向上弯折，避免损伤电池，并且角状的中地板横梁连接支架6能更好地配合多空腔型材结构中的横梁支撑部11，实现溃缩效果，另外还使得门槛梁与横梁之间的连接更加稳固。
在本实施例中，第一门槛梁1和第二门槛梁2通过螺栓连接电池包7，通过螺栓将电池包7和车身紧密连接在一起，利用电池包7的结构强度增强整车的刚度，在碰撞中有效保护内部乘员，并保护电池。
以上详细描述了本公开的一些实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本公开的构思做出诸多修改和变化。因此，凡本技术领域中的技术人员依本公开的构思通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (16)

  1. 一种中后地板架构，包括中地板边框式结构和电池包(7)，所述中地板边框式结构包括横梁组件和纵梁组件，所述电池包(7)安装在所述横梁组件的下方，所述横梁组件和所述电池包(7)受所述纵梁组件支撑。
  2. 根据权利要求1所述的中后地板架构，还包括中地板(8)、后地板(9)、座椅坑(10)，所述中地板(8)安装在所述横梁组件的上方，所述中地板(8)、所述后地板(9)和所述座椅坑(10)依次连接，所述横梁组件、所述电池包(7)、所述中地板(8)、所述后地板(9)和所述座椅坑(10)均受所述纵梁组件支撑。
  3. 根据权利要求1或2所述的中后地板架构，其中，所述纵梁组件包括第一门槛梁(1)和第二门槛梁(2)，所述横梁组件包括第一中地板横梁(3)、第二中地板横梁(4)和第三中地板横梁(5)，所述第一中地板横梁(3)、所述第二中地板横梁(4)和所述第三中地板横梁(5)的两端均通过中地板横梁连接支架(6)分别连接所述第一门槛梁(1)和第二门槛梁(2)。
  4. 根据权利要求3所述的中后地板架构，其中，所述第一中地板横梁(3)、所述第二中地板横梁(4)和所述第三中地板横梁(5)的下方安装有所述电池包(7)，所述电池包(7)的两端分别连接所述第一门槛梁(1)和所述第二门槛梁(2)。
  5. 根据权利要求3所述的中后地板架构，其中，所述第一门槛梁(1)和所述第二门槛梁(2)均设有纵梁电池包固定点(71)，所述电池包(7)固定在所述纵梁电池包固定点(71)上。
  6. 根据权利要求5所述的中后地板架构，其中，所述第一中地板横梁(3)、所述第二中地板横梁(4)和所述第三中地板横梁(5)上均设有横梁电池包固定点(72)，所述电池包(7)固定在所述纵梁电池包固定点(71)和所述横梁电池包固定点(72)上。
  7. 根据权利要求3所述的中后地板架构，其中，所述第一门槛梁(1)和所述第二门槛梁(2)均为多空腔型材结构。
  8. 根据权利要求3至6中任一项所述的中后地板架构，其中，所述第一门槛梁(1)和所述第二门槛梁(2)各自分别包括相互连接的横梁支撑部(11)和电池支撑部(12)，所述横梁支撑部(11)位于所述电池支撑部(12)的上方，所述横梁支撑部(11)的截面为中空的四边形，所述电池支撑部(12)的截面为多孔的网格状，所述横梁支撑部(11)的一侧连接所述中地板横梁连接支架(6)，所述电池支撑部(12)的一侧连接所述电池包(7)。
  9. 根据权利要求8所述的中后地板架构，其中，所述电池支撑部(12)包括依次连接的第一层支撑部(121)、第二层支撑部(122)和底部连接部(123)，所述第一层 支撑部(121)、所述第二层支撑部(122)和所述底部连接部(123)的截面包括一个或多个多边形的格子。
  10. 根据权利要求9所述的中后地板架构，其中，所述第一层支撑部(121)的截面包括两个相互连接的多边形格子，所述第二层支撑部(122)的截面包括三个依次连接的多边形格子，所述底部连接部(123)的截面包括两个多边形格子。
  11. 根据权利要求3所述的中后地板架构，其中，所述中地板横梁连接支架(6)包括第一角状连接板(601)、第二角状连接板(602)和底部固定板(603)，所述底部固定板(603)分别固定连接所述第一角状连接板(601)和第二角状连接板(602)的底部，形成凹字形结构，所述第一角状连接板(601)和所述第二角状连接板(602)的顶部用于连接所述第一中地板横梁(3)、所述第二中地板横梁(4)或所述第三中地板横梁(5)，所述第一角状连接板(601)和所述第二角状连接板(602)的侧边用于连接所述第一门槛梁(1)或第二门槛梁(2)。
  12. 根据权利要求11所述的中后地板架构，其中，所述第一角状连接板(601)和所述第二角状连接板(602)的顶部均设有第一连接页(604)，所述第一中地板横梁(3)、所述第二中地板横梁(4)和所述第三中地板横梁(5)的顶部两侧均对应设有第二连接页(501)，所述第一中地板横梁(3)、所述第二中地板横梁(4)或所述第三中地板横梁(5)位于所述第一角状连接板(601)和所述第二角状连接板(602)之间，所述第二连接页(501)连接所述第一连接页(604)；
    所述第一角状连接板(601)和所述第二角状连接板(602)的侧边底部均连接有第三连接页(605)，该第三连接页(605)用于连接所述第一门槛梁(1)或所述第二门槛梁(2)。
  13. 根据权利要求3所述的中后地板架构，其中，所述第一门槛梁(1)和所述第二门槛梁(2)通过螺栓连接所述电池包(7)。
  14. 根据权利要求3所述的中后地板架构，其中，所述第一中地板横梁(3)、第二中地板横梁(4)和第三中地板横梁(5)的顶部均连接有所述中地板(8)。
  15. 根据权利要求2-14中任一项所述的中后地板架构，其中，所述中地板(8)和所述后地板(9)用于安装第二排座椅和第三排座椅，所述座椅坑(10)用于安装第四排座椅。
  16. 根据权利要求2-14中任一项所述的中后地板架构，其中，所述中地板(8)和所述后地板(9)的上表面铺设有座椅长滑轨。
PCT/CN2022/123853 2021-10-18 2022-10-08 一种中后地板架构 WO2023066031A1 (zh)

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