Modular small logistics skateboard chassis with integrated drive system

Abstract

The application provides a modular small logistics slide chassis with an integrated drive system, comprising a battery module, a whole vehicle control module and an integrated drive system module, the integrated drive system module is installed on both sides of the whole vehicle control module, and the battery module is installed between the front and rear whole vehicle control modules; the integrated drive system assembly comprises a suspension guiding assembly, a steer-by-wire assembly, an electric drive assembly and a wheel assembly, and the steer-by-wire assembly is installed on a load-bearing vehicle body and connected with the suspension guiding assembly. The slide chassis adopts a modular design, can be more flexibly matched with logistics vehicle cabins with different functions, meanwhile, the electric drive system and the suspension system are integrated in the inner space of the wheel, the occupied space of the related systems is reduced, the accommodation space of the battery compartment and the related control system of the slide chassis is increased, and the design space of the upper freight vehicle cabin is increased.

Description

Technical Field

[0001] This invention belongs to the technical field of automobile chassis, and particularly relates to a modular small logistics skateboard chassis with an integrated drive system. Background Technology

[0002] As electric vehicles gradually increase their voltage platforms and develop intelligent and unmanned technologies, the size of the battery packs, motors, and electronic control systems in these vehicles is gradually increasing, which further reduces the space inside the car's cabin and affects the comfort of passengers.

[0003] Skateboard chassis technology is a novel automotive chassis technology that integrates core modules such as the battery, drive system, suspension system, and steering system onto the chassis. This allows for the separation of the upper cabin from the chassis, enabling decoupled development of the cabin and chassis and increasing the flexibility of vehicle design. Researchers can use the same skateboard chassis with different functional cabins to meet various vehicle usage requirements, effectively reducing vehicle design and development costs.

[0004] In the field of logistics and freight vehicles, to accommodate larger cargo compartments and increase load capacity, it is necessary to minimize the size of various systems and lower the height of the skateboard chassis. For example, Chinese patent application CN 218858097 U discloses an active suspension system and vehicle based on a skateboard chassis, including an air suspension device and a transverse leaf spring. The air suspension device consists of an air spring and a shock absorber. The outer ends of the vehicle's double wishbone lower control arm and double wishbone upper control arm are connected to the steering knuckle, and the inner ends are connected to the subframe or the chassis / body. The transverse leaf spring is located below the air suspension device, with its middle section connected to the subframe and its two ends connected to the outer ends of the corresponding double wishbone lower control arm. The upper end of the air suspension device is connected to the chassis / body, and the lower end is connected to the corresponding double wishbone lower control arm. The air suspension device is located in front of the wheel rotation axis.

[0005] The aforementioned active suspension system based on a skateboard chassis helps reduce the height of the skateboard chassis, thereby increasing design space for the upper cabin. However, like the aforementioned solutions, most current skateboard chassis use a suspension structure similar to the double wishbone or multi-link structure in traditional passenger vehicles. This type of suspension structure occupies a large amount of lateral space, which is detrimental to further increasing cabin design space. Furthermore, current skateboard chassis technologies do not employ a modular design, limiting the design flexibility of the chassis and upper cabin. Summary of the Invention

[0006] This invention addresses the problems mentioned in the background section by proposing a modular small logistics skateboard chassis with an integrated drive system. The invention employs a modular design for the small logistics skateboard chassis, dividing it into a battery module, a vehicle control module, and an integrated drive system module, significantly improving the chassis design flexibility. Specifically, by integrating the suspension system, steering system, and drive system within the wheel well space, compared to existing skateboard chassis technology, it enhances the overall vehicle integration and further reduces the space occupied by the suspension, steering, and drive systems, thereby increasing the design space of the upper vehicle compartment.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A modular small logistics skateboard chassis with an integrated drive system includes a skateboard chassis frame with a battery module mounted on the frame. Each of the four corners of the chassis frame has an integrated drive system module. Each integrated drive system module includes a suspension guide assembly, a steer-by-wire assembly, an electric drive assembly, a wheel assembly, and a wheel guard plate. The suspension guide assembly includes a fixed part and a rotating part, which are hinged together. The fixed part is fixedly mounted on the wheel guard plate, which is also fixedly mounted on the skateboard chassis frame. The electric drive assembly is mounted on the rotating part and connected to the wheel assembly. The steer-by-wire assembly is connected to the rotating part and can control the rotation of the rotating part relative to the fixed part, thereby causing the drive assembly and wheel assembly to steer. The electric drive assembly provides driving force to rotate the wheel assembly, which then contacts the ground.

[0008] To optimize the above technical solution, the specific measures also include: The aforementioned battery module contains a power battery.

[0009] The aforementioned skateboard chassis frame has a vehicle control module installed at the front and rear ends of the center section, an integrated drive system module installed on both sides of the vehicle control module, and a battery module installed in the middle of the skateboard chassis frame.

[0010] The aforementioned vehicle control module contains a vehicle controller for the vehicle body where the modular small logistics skateboard chassis is located.

[0011] The aforementioned suspension guiding components include: a pillar, an upper rocker arm, a lower rocker arm, a suspension support, and a shock absorber. The upper rocker arm has an inverted triangular structure, located between the pillar and the shock absorber. Each of the three corners of the upper rocker arm has a hinge hole. The hinge hole at the upper part of the upper rocker arm near the shock absorber is defined as hole A, the hinge hole at the lower part of the upper rocker arm as hole B, and the hinge hole at the upper part of the upper rocker arm near the pillar as hole C. The lower rocker arm has a transverse rod-like structure, located between the pillar and the shock absorber. The rocker arm is located above the lower rocker arm. Each end of the lower rocker arm has a hinge hole. The hinge hole near the shock absorber is defined as hole D, and the hinge hole near the column is defined as hole E. The lower end of the shock absorber is connected to the suspension support, the upper end of the shock absorber is hinged to hole A of the upper rocker arm, the upper end of the suspension support is hinged to hole B of the upper rocker arm, and the lower end of the suspension support is hinged to hole D of the lower rocker arm. The upper part of the column is connected to hole C of the upper rocker arm, and the lower part of the column is hinged to hole E of the lower rocker arm.

[0012] The upper rocker arm C hole and the lower rocker arm E hole are both equipped with radial joint bearings, which gives the column the freedom to rotate around the line connecting the C hole and the E hole.

[0013] The aforementioned steer-by-wire assembly includes an R-EPS steer-by-wire device and a tie rod. The tie rod has hinge points at both ends. One end of the R-EPS steer-by-wire device is mounted on the wheel guard plate, and the other end is hinged to one end of the tie rod. The hinge point at the other end of the tie rod is hinged to the column. The R-EPS steer-by-wire device can make the column rotate around the line connecting the C-hole and the E-hole through the tie rod.

[0014] The aforementioned electric drive assembly includes: a drive motor, bearings, a reducer rear cover, a drive pulley, a driven pulley, a transmission belt, a reducer front cover, a brake caliper, a brake disc, and a wheel hub. The drive pulley, driven pulley, and transmission belt are installed between the reducer front cover and the reducer rear cover. The drive motor is mounted on a column, and the output shaft of the drive motor passes through the reducer rear cover and is connected to the drive pulley. The transmission belt is wound around the drive pulley and the driven pulley. The driven pulley has a larger diameter than the drive pulley. The driven pulley is connected to the reducer front cover and the reducer rear cover via bearings. The driven pulley is also connected to the wheel hub, which is connected to the wheel assembly. The brake caliper is installed on one side of the reducer front cover. The brake disc is installed on the wheel hub, and the brake caliper can apply braking force to the brake disc.

[0015] The aforementioned skateboard chassis frame is equipped with an unmanned logistics freight vehicle compartment.

[0016] The aforementioned skateboard chassis frame is equipped with a cargo compartment.

[0017] This invention offers the following advantages: The logistics skateboard chassis adopts a modular design, allowing for independent design of modules of different sizes for different cabins, thus improving chassis design flexibility and reducing overall vehicle design costs. A novel suspension structure reduces the size of the suspension system while integrating the electric drive system within the wheel well space. This increases the space available for the battery compartment and related control systems, enabling the chassis to accommodate larger capacity battery packs and more complex autonomous driving and control systems. It also increases the design space for the upper cabin, allowing for a larger cabin. Furthermore, since all four wheels of the logistics skateboard chassis are equipped with this integrated drive system, each wheel has independent drive and steering capabilities, providing all-wheel drive and all-wheel steering, further enhancing the vehicle's agility and power. In addition, the integrated drive system and skateboard chassis system are simple in structure, highly feasible, and easy to implement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall assembly of the small logistics skateboard chassis of the present invention; Figure 2 This is an exploded view of the overall assembly of the small logistics skateboard chassis of the present invention; Figure 3 , Figure 4 This is an example diagram of the first embodiment of the present invention; Figure 5 , Figure 6 This is an example diagram of the second embodiment of the present invention; Figure 7 This is a schematic diagram of the integrated drive system module assembly (excluding wheel guards) of the present invention; Figure 8 An exploded view of the integrated drive system module assembly of the present invention; Figure 9 This is a schematic diagram of the suspension guide assembly of the present invention; Figure 10 An exploded view of the suspension guide assembly of the present invention; Figure 11 This is a schematic diagram of the electric drive assembly of the present invention; Figure 12 This is an exploded view of the electric drive assembly of the present invention. Figure 13 This is a schematic diagram of the assembly of the steer-by-wire component of the present invention.

[0019] The diagram is labeled as follows: Battery Module 1, Vehicle Control Module 2, Integrated Drive System Module 3, Suspension Guiding Assembly 3-1, Column 3-1-1, Upper Rocker Arm 3-1-2, Lower Rocker Arm 3-1-3, Suspension Support 3-1-4, Shock Absorber 3-1-5, Steer-by-Wire Assembly 3-2, R-EPS Steer-by-Wire Gear 3-2-1, Steering Tie Rod 3-2-2, Electric Drive Assembly 3-3, Drive Motor 3-3-1, Wheel Hub Bearing 3-3-2, Reducer Rear Cover 3-3-3, Drive Wheel 3-3-4, Driven Wheel 3-3-5, Drive Belt 3-3-6, Reducer Front Cover 3-3-7, Brake Caliper 3-3-8, Brake Disc 3-3-9, Wheel Hub 3-3-10, Wheel Assembly 3-4, Wheel Protector 3-5, Unmanned Logistics Freight Cargo Cabin 4, Freight Cargo Cabin 5. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0021] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0022] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0023] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units (elements) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms “multiple” / “several” used in this application refer to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can indicate: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," and "third" used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0024] Combined with appendix Figure 1 With appendix Figure 2 The present invention provides a modular small logistics skateboard chassis with an integrated drive system, comprising: a battery module 1, a vehicle control module 2, and an integrated drive system module 3; wherein, the integrated drive system module 3 is installed on both sides of the vehicle control module 2, and the battery module 1 is installed between the front and rear vehicle control modules 2; the vehicle control module 2 is equipped with various vehicle controllers; and the battery module 1 is equipped with a power battery.

[0025] Combined with appendix Figure 3 With appendix Figure 4 The diagram below is a schematic diagram of the first embodiment of the present invention. The short wheelbase unmanned logistics vehicle includes an unmanned logistics cargo compartment 4 and a modular small logistics skateboard chassis. The unmanned logistics cargo compartment 4 is mounted on the modular small logistics skateboard chassis.

[0026] Combined with appendix Figure 5 With appendix Figure 6 The diagram below is a schematic diagram of a second embodiment of the present invention. The long-wheelbase small open logistics vehicle includes a small open cargo compartment 5 and a modular small logistics skateboard chassis. The small open cargo compartment 5 is mounted on the modular small logistics skateboard chassis.

[0027] Combined with appendix Figure 7 With appendix Figure 8This invention provides a modular small logistics skateboard chassis with an integrated drive system. The integrated drive system components include a suspension guide assembly 3-1, a steer-by-wire assembly 3-2, an electric drive assembly 3-3, a wheel assembly 3-4, and a wheel guard plate 3-5. One end of the steer-by-wire assembly 3-2 is connected to the suspension guide assembly 3-1, and the other end is installed on one side of the wheel guard plate 3-5. The suspension guide assembly 3-1 is connected to the wheel guard plate 3-5 through a suspension support 3-1-4. The electric drive assembly 3-3 is installed in the motor mounting hole of the column 3-1-1 in the suspension guide assembly 3-1 through a drive motor 3-3-1. The wheel assembly 3-4 is bolted to the rim mounting stud on one side of the wheel hub 3-3-10 in the electric drive assembly 3-3.

[0028] Combined with appendix Figure 9 With appendix Figure 10 The present invention provides a modular small logistics skateboard chassis with an integrated drive system. The suspension guide assembly 3-1 includes: a column 3-1-1, an upper rocker arm 3-1-2, a lower rocker arm 3-1-3, a suspension support 3-1-4, and a shock absorber 3-1-5. The lower end of the shock absorber is connected to the suspension support 3-1-4, and the upper end is connected to the upper rocker arm 3-1-2 through hole A. The upper rocker arm 3-1-2 is connected to the upper part of the suspension support 3-1-4 through hole B. The lower rocker arm 3-1-3 is connected to one side of the suspension support 3-1-4 through hole D. The upper end of the column 3-1-1 is connected to the upper rocker arm 3-1-2 through hole C, and the lower end of the column is connected to the lower rocker arm 3-1-3 through hole E. A radial joint bearing is installed in hole C of the upper rocker arm 3-1-2, and a radial joint bearing is installed in hole E of the lower rocker arm, so that column 3-1-1 has the freedom to rotate around the line connecting holes C and E.

[0029] Combined with appendix Figure 11 With appendix Figure 12This invention provides a modular small logistics skateboard chassis with an integrated drive system. The electric drive assembly 3-3 includes: a drive motor 3-3-1, a reducer rear cover 3-3-3, a drive wheel 3-3-4, a transmission belt 3-3-6, a driven wheel 3-3-5, a reducer front cover 3-3-7, a wheel hub bearing 3-3-2, a wheel hub 3-3-10, a brake disc 3-3-9, and a brake caliper 3-3-8. The reducer rear cover 3-3-3 is mounted on one side of the drive motor 3-3-1; the wheel hub bearing 3-3-2 is mounted on both the reducer rear cover 3-3-3 and the reducer front cover 3-3-7; and the drive wheel 3-3-4 is mounted via a spline. At the output shaft of drive motor 3-3-1; hub 3-3-10 is installed via an interference fit between the inner rings of two hub bearings 3-3-2; driven wheel 3-3-5 is connected to hub 3-3-10 via splines; transmission belt 3-3-6 is wound around drive wheel 3-3-4 and driven wheel 3-3-5. The torque output by drive motor 3-3-1 is transmitted to driven wheel 3-3-5 via drive belt 3-3-6 through reduction drive wheel 3-3-4, and then transmitted from driven wheel 3-3-5 to hub 3-3-10 via splines. This allows wheel assembly 3-4 connected to hub 3-3-10 to obtain a reduced and increased driving torque, thus enabling the skateboard chassis to move normally. Brake calipers 3-3-8 are mounted on one side of the reducer front cover 3-3-7; brake discs 3-3-9 are mounted on the brake disc mounting flange of wheel hub 3-3-10 via brake disc movable rivets. When the driver presses the brake pedal or the autonomous driving system issues a braking command, the brake calipers can apply braking force to the brake disc, causing the wheel assembly 3-4 to rotate and decelerate.

[0030] Combined with appendix Figure 13 This invention provides an electric skateboard chassis with an integrated drive system and a steer-by-wire system component 3-2, including: an R-EPS steer-by-wire unit 3-2-1 and a steering tie rod 3-2-2. One side of the R-EPS steer-by-wire unit 3-2-1 is mounted on a wheel guard plate 3-5. The steering tie rod 3-2-2 is connected to one end of the R-EPS steer-by-wire unit 3-2-1. Radial joint bearings are installed at both ends of the steering tie rod 3-2-2, and one end of the steering tie rod 3-2-2 is connected to the lower hinge point of the column 3-1-1. When the driver turns the steering wheel or the autonomous driving system issues a steering command, the R-EPS steer-by-wire unit 3-2-1 drives the column 3-1-1 to rotate around the line connecting holes C and E via the steering tie rod 3-2-2, thus enabling the wheel assembly 3-4 to perform steering.

[0031] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A modular small logistics skateboard chassis with an integrated drive system, comprising a skateboard chassis frame, wherein a battery module (1) is mounted on the skateboard chassis frame; characterized in that: An integrated drive system module (3) is installed at each of the four corners of the skateboard chassis frame. Each integrated drive system module (3) includes a suspension guide assembly (3-1), a steer-by-wire assembly (3-2), an electric drive assembly (3-3), a wheel assembly (3-4), and a wheel guard plate (3-5). The suspension guide assembly (3-1) includes a fixed part and a rotating part, which are hinged together. The fixed part is fixedly installed on the wheel guard plate (3-5). 5) The electric drive assembly (3-3) is fixedly installed on the skateboard chassis frame. The electric drive assembly (3-3) is installed on the rotating part. The electric drive assembly (3-3) is connected to the wheel assembly (3-4). The steer-by-wire assembly (3-2) is connected to the rotating part and can control the rotating part to rotate relative to the fixed part, thereby causing the electric drive assembly (3-3) and the wheel assembly (3-4) to turn. The electric drive assembly (3-3) is used to provide driving force to rotate the wheel assembly (3-4). The wheel assembly (3-4) is in contact with the ground. The suspension guide assembly (3-1) includes: a column (3-1-1), an upper rocker arm (3-1-2), a lower rocker arm (3-1-3), a suspension support (3-1-4), and a shock absorber (3-1-5); the upper rocker arm (3-1-2) has an inverted triangular structure, located between the column (3-1-1) and the shock absorber (3-1-5), and each of the three corners of the upper rocker arm (3-1-2) has a hinge. The hinge holes are defined as follows: the hinge hole on the upper part of the upper rocker arm (3-1-2) near the shock absorber (3-1-5) is called hole A; the hinge hole on the lower part of the upper rocker arm (3-1-2) is called hole B; the hinge hole on the upper part of the upper rocker arm (3-1-2) near the column (3-1-1) is called hole C; the lower rocker arm (3-1-3) is a transverse rod-like structure located between the column (3-1-1) and the shock absorber (3-1-5); the upper rocker arm (3-1-... 2) Located above the lower rocker arm (3-1-3), each end of the lower rocker arm (3-1-3) has a hinge hole. The hinge hole near the shock absorber (3-1-5) is defined as hole D, and the hinge hole near the column (3-1-1) is defined as hole E. The lower end of the shock absorber (3-1-5) is connected to the suspension support (3-1-4). The upper end is hinged to the upper rocker arm (3-1-2) A hole, the upper end of the suspension support (3-1-4) is hinged to the upper rocker arm (3-1-2) B hole, the lower end of the suspension support (3-1-4) is hinged to the lower rocker arm (3-1-3) D hole, the upper part of the column (3-1-1) is connected to the upper rocker arm (3-1-2) C hole, and the lower part of the column (3-1-1) is hinged to the lower rocker arm (3-1-3) E hole.

2. The modular small logistics skateboard chassis with an integrated drive system according to claim 1, characterized in that: The battery module (1) is equipped with a power battery.

3. The modular small logistics skateboard chassis with an integrated drive system according to claim 2, characterized in that: The vehicle control module (2) is installed at the middle of the front and rear ends of the skateboard chassis frame, the integrated drive system module (3) is installed on both sides of the vehicle control module (2), and the battery module (1) is installed in the middle of the skateboard chassis frame.

4. The modular small logistics skateboard chassis with an integrated drive system according to claim 3, characterized in that: The vehicle control module (2) contains a vehicle controller for the vehicle body where the modular small logistics skateboard chassis is located.

5. A modular small logistics skateboard chassis with an integrated drive system according to claim 4, characterized in that: Both the upper rocker arm (3-1-2) C hole and the lower rocker arm (3-1-3) E hole are equipped with radial joint bearings, so that the column (3-1-1) has the freedom to rotate around the line connecting the C hole and the E hole.

6. A modular small logistics skateboard chassis with an integrated drive system according to claim 5, characterized in that: The steer-by-wire assembly (3-2) includes an R-EPS steer-by-wire device (3-2-1) and a steering tie rod (3-2-2). The steering tie rod (3-2-2) has hinge points at both ends. One end of the R-EPS steer-by-wire device (3-2-1) is mounted on the wheel guard plate (3-5), and the other end is hinged to one end of the steering tie rod (3-2-2). The hinge point at the other end of the steering tie rod (3-2-2) is hinged to the column (3-1-1). The R-EPS steer-by-wire device (3-2-1) can make the column (3-1-1) rotate around the line connecting the C hole and the E hole through the steering tie rod (3-2-2).

7. A modular small logistics skateboard chassis with an integrated drive system according to claim 6, characterized in that: The electric drive assembly (3-3) includes: a drive motor (3-3-1), a bearing (3-3-2), a reducer rear cover (3-3-3), a drive pulley (3-3-4), a driven pulley (3-3-5), a transmission belt (3-3-6), a reducer front cover (3-3-7), a brake caliper (3-3-8), a brake disc (3-3-9), and a wheel hub (3-3-10); the drive pulley (3-3-4), the driven pulley (3-3-5), and the transmission belt (3-3-6) are installed between the reducer front cover (3-3-7) and the reducer rear cover (3-3-3); the drive motor (3-3-1) is installed on a column (3-1-1); the output shaft of the drive motor (3-3-1) passes through the reducer rear cover (3-3-3) and is connected to the drive pulley (3-3-4) for transmission. The transmission belt (3-3-6) is wound around the driving pulley (3-3-4) and the driven pulley (3-3-5). The driven pulley (3-3-5) has a larger diameter than the driving pulley (3-3-4). The driven pulley (3-3-5) is connected to the front cover (3-3-7) and the rear cover (3-3-3) of the reducer via a bearing (3-3-2). The driven pulley (3-3-5) is also connected to the wheel hub (3-3-10). The wheel hub (3-3-10) is connected to the wheel assembly (3-4). The brake caliper (3-3-8) is mounted on one side of the front cover (3-3-7) of the reducer. The brake disc (3-3-9) is mounted on the wheel hub (3-3-10). The brake caliper (3-3-8) can apply braking force to the brake disc (3-3-9).

8. A modular small logistics skateboard chassis with an integrated drive system according to claim 1, characterized in that: An unmanned logistics cargo compartment (4) is installed on the skateboard chassis frame.

9. A modular small logistics skateboard chassis with an integrated drive system according to claim 1, characterized in that: The aforementioned skateboard chassis frame is equipped with a cargo compartment (5).

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