Cab

Abstract

The cab comprises a driving compartment and a steering mechanism, the driving compartment is provided with a driving cabin and comprises a front portion and side portions located on the two sides of the front portion, wheel openings are formed in the side portions and used for being matched with front wheels, the wheel openings and the front wheels are concentrically arranged, and the steering mechanism comprises a steering wheel arranged in the driving cabin. In the X direction, the value range of the maximum size L4 of the driving compartment is larger than or equal to 1550 mm and smaller than or equal to 1950 mm, the distance between the center point of the steering wheel and the center point of the wheel opening is L11, and the value range of L11 is larger than or equal to-65 mm and smaller than or equal to 335 mm. Wherein L11 is a negative value when the center point of the steering wheel is located on the side, close to the front portion, of the center point of the wheel opening, and L11 is a positive value when the center point of the steering wheel is located on the side, away from the front portion, of the center point of the wheel opening. According to the cab in the embodiment of the invention, the layout of the cab can be reconstructed, a design space is reserved for forming a streamline structure at the front part of the cab in a limited space, and the design of the low-wind-resistance cab is conveniently realized.

Description

Technical Field

[0001] The present application relates to the field of driving technology, and in particular to a driving cab. Background Art

[0002] The cab is the driver's main workplace and is also the main component of the related vehicle products. Therefore, the design of the cab is not only related to the driver's driving comfort, but also to the product competitiveness of the related vehicle products.

[0003] Driving comfort and ease of getting on and off the vehicle are of great concern to drivers because they directly affect the driving experience.

[0004] In addition, reducing the air resistance of the cab is also receiving more and more attention because it can improve the product competitiveness of related vehicle products. This is because the air resistance will increase significantly with the increase of vehicle speed, resulting in a significant increase in the energy consumed due to the increase in air resistance. Under the condition of a certain total energy of the vehicle (for example, a certain battery capacity), this will inevitably affect the vehicle's range. Summary of the invention

[0005] An embodiment of the present application provides a cab that reconstructs the cab layout and reserves design space for forming a streamlined structure at the front of the cab within a limited space, thereby facilitating the realization of a low wind resistance cab design.

[0006] In the first aspect, an embodiment of the present application provides a cab, which includes a cab body and a steering mechanism, wherein the cab body has a cockpit, the cab body includes a front portion and side portions located on both sides of the front portion, and the side portions are provided with wheel openings, which are used to cooperate with the front wheels and are arranged concentrically with the front wheels. The steering mechanism includes a steering wheel, and the steering wheel is arranged in the cockpit. Wherein, in the X direction, the maximum dimension L4 of the cab body satisfies the range of 1550mm≤L4≤1950mm, the distance between the center point of the steering wheel and the center point of the wheel opening is L11, and the range of L11 satisfies the range of -65mm≤L11≤335mm. Wherein, when the center point of the steering wheel is located on the side where the center point of the wheel opening is close to the front, L11 takes a negative value, and when the center point of the steering wheel is located on the side where the center point of the wheel opening is far from the front, L11 takes a positive value.

[0007] According to any implementation of the aforementioned first aspect of the present application, the distance L11 between the center point of the steering wheel and the center point of the wheel opening satisfies: -15mm≤L11≤285mm.

[0008] According to any implementation of the aforementioned first aspect of the present application, the maximum dimension L4 of the driving compartment satisfies the range of 1600mm≤L4≤1900mm.

[0009] According to any embodiment of the first aspect of the present application, a door is provided on the side, and in the X direction, the front edge and the rear edge of the door are respectively located on both sides of the wheel opening, and a wheel cover area is formed between the front edge of the door and the rear edge of the wheel opening, and a step area is formed between the rear edge of the door and the rear edge of the wheel opening. The orthographic projection of the steering wheel on the side is at least partially located in the wheel cover area, and has a preset spacing from the rear edge of the door in the X direction.

[0010] According to any embodiment of the aforementioned first aspect of the present application, the cab also includes a driving seat, which is arranged in the cockpit, and the orthographic projection of the driving seat on the side is at least partially located in the stepping area.

[0011] According to any implementation of the first aspect of the present application, in the X direction, the distance between the center point of the wheel opening and the rear edge of the door is L1, and the distance between the front edge of the door and the rear edge of the door is L2. The value range of L1 satisfies 630mm≤L1≤1030mm, and the value range of the ratio of L1 to L2 satisfies 0.65≤L1 / L2≤0.95.

[0012] According to any embodiment of the aforementioned first aspect of the present application, the steering mechanism also includes a steering shaft and a steering shaft bracket, the steering shaft is fixedly mounted on the driving compartment through the steering shaft bracket, and the steering wheel is transmission-connected to the steering shaft, the inclination angle of the steering shaft relative to the horizontal plane is α5, and the value range of α5 satisfies: 45°≤α5≤65°.

[0013] According to any implementation of the aforementioned first aspect of the present application, the front portion includes a windshield portion, which is inclined relative to the vertical plane and has an inclination angle of α1, wherein the value range of α1 satisfies: 15°≤α1≤25°.

[0014] According to any embodiment of the first aspect of the present application, the front portion further includes a first zone and a second zone arranged in the Z direction, the second zone is located on a side of the first zone facing the windshield portion and connected to the windshield portion. Along the Z direction, the second zone is inclined relative to the vertical plane and the inclination angle is α2, and the difference between the inclination angle α1 of the windshield portion relative to the vertical plane and the inclination angle α2 of the second zone relative to the vertical plane satisfies: 0°≤α1-α2≤5°.

[0015] According to any implementation of the first aspect of the present application, the inclination angle of the first zone relative to the vertical plane is smaller than the inclination angle of the second zone relative to the vertical plane, and the inclination angle of the first zone relative to the vertical plane is α3, and the value range of α3 satisfies 0°≤α3≤10°.

[0016] According to any implementation of the aforementioned first aspect of the present application, the maximum dimension of the first zone along the Z direction is L5, and the value range of L5 satisfies 320mm≤L5≤420mm.

[0017] According to any embodiment of the aforementioned first aspect of the present application, the front portion also includes a third zone portion. Along the Z direction, the third zone portion is located on the side of the windshield portion away from the wheel opening and is connected to the windshield portion. The third zone portion is inclined relative to the vertical plane and the inclination angle is α4, and the value range of α4 satisfies: 25°≤α4≤40°.

[0018] A second aspect of the present application provides a chassis including a cab according to the above embodiment.

[0019] According to any embodiment of the second aspect of the present application, the chassis includes a frame and a front wheel, the cab is mounted on the frame, and the center of the front wheel is arranged to coincide with the center of the wheel opening of the cab. The steering mechanism also includes a steering rod and a steering gear, the steering gear is fixedly arranged on the frame and located below the cab, the two ends of the steering rod are respectively connected to the steering gear and the front wheel hub, and the length L13 of the steering rod along the X direction satisfies: 440mm≤L13≤540mm.

[0020] According to any embodiment of the aforementioned second aspect of the present application, the steering mechanism also includes a steering rocker arm and a steering elbow arm, the first end of the steering rod is connected to the steering gear through the steering rocker arm, and the second end of the steering rod is connected to the front wheel hub through the steering elbow arm.

[0021] According to any embodiment of the aforementioned second aspect of the present application, in the X direction, the length dimension L8 of the front overhang of the cab satisfies 640mm≤L8≤840mm, and the length dimension of the front overhang is: the distance between the front end of the cab and the center point of the wheel mouth along the X direction.

[0022] According to any embodiment of the aforementioned second aspect of the present application, a front bumper is provided at the front of the cab, and along the Z direction, the distance between the lowest edge of the front bumper and the lower edge of the front wheel is L6, and the value range of L6 satisfies: 220mm≤L7≤320mm.

[0023] A third aspect of the present application provides a light truck, comprising a cab according to the first aspect or a chassis according to the second aspect.

[0024] The cab provided in the embodiment of the present application can innovate the position of the driver's sitting posture relative to the whole vehicle by positioning the steering wheel according to the position of the center point of the wheel opening, compared with the existing light truck. Among them, by making the value range of the maximum dimension L4 of the driving compartment in the X direction satisfy: 1550mm≤L4≤1950mm, and making the distance between the center point of the steering wheel and the center point of the wheel opening set to -65mm≤L11≤335mm, it is possible to achieve a better human-machine arrangement to meet driving comfort and convenience of getting on and off the vehicle within a limited cab length, and at the same time, reserve sufficient design space for other cab designs (for example, low wind resistance design) to further achieve energy consumption reduction.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0027] Figure 1 is a side view of a chassis provided by some embodiments of the present application;

[0028] Figure 2 is a side view of a cab with doors omitted provided by some embodiments of the present application;

[0029] Figure 3 is a side view of a cab provided by some embodiments of the present application;

[0030] Figure 4 is a side view of a cab provided in some other embodiments of the present application;

[0031] Figure 5 is a side view of a cab provided by some other embodiments of the present application;

[0032] Figure 6 is a side view of a cab provided by some other embodiments of the present application;

[0033] Figure 7 is a schematic diagram of the structure of a steering mechanism provided in some embodiments of the present application;

[0034] Figure 8 is a top view of a chassis provided in some embodiments of the present application;

[0035] Fig. 9 is a top view of a cab provided in some embodiments of the present application;

[0036] Fig.10 is a schematic diagram of the structure of a cab provided in some embodiments of the present application;

[0037] Fig.11 is a side view of a cab provided by some other embodiments of the present application;

[0038] Fig.12 is a schematic diagram of measuring the tilt angle provided in some embodiments of the present application;

[0039] Fig.13 is a simplified diagram of the inclination angle of the first zone provided in some embodiments of the present application;

[0040] Fig.14 It is a side view of a cab provided in some other embodiments of the present application.

[0041] Description of Figure Numbers:

[0042] 100-chassis; 10-cab; 20-front wheel; 30-rear wheel;

[0043] 1-driving compartment; 11-front; 111-windshield; 112-first zone; 113-second zone; 114-third zone; 12-side; 121-wheel opening; 122-door opening; 2-door; 3-brake pedal; 4-driver's seat; 5-steering mechanism; 51-steering wheel; 52-steering shaft; 53-steering shaft bracket; 54-steering tie rod; 55-steering gear; 56-steering rocker arm;

[0044] S1-wheel arch area; S2-stepping area.

[0045] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0046] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] See also Figure 1 , Figure 1 A side view of a chassis 100 provided in some embodiments of the present application is shown.

[0049] An embodiment of the present application provides a light truck, which includes a chassis 100 and a cargo box disposed on the chassis 100 .

[0050] A light truck refers to a truck equipped with a cargo box. According to relevant standards, it specifically refers to a truck with a total vehicle length along the X direction less than 6000mm and a total mass less than 4500kg.

[0051] The chassis 100 includes a chassis 100 with a cab 10 and a chassis 100 without a cab 10 installed, that is, a light truck may include a chassis 100 with a cab 10 and a cargo box, and may also include a chassis 100, a cargo box and a cab 10 without a cab 10 installed.

[0052] Taking the chassis 100 with the cab 10 installed as an example, the chassis 100 can carry multiple functional systems such as a power system (engine and / or power battery, motor, etc.), a transmission system, a suspension system and a braking system. The chassis 100 also has front wheels 20 and rear wheels 30. The transmission system is used to transmit the power of the power system to the front wheels 20 and / or the rear wheels 30 to drive the light truck to travel.

[0053] It should be noted that the cab 10 in the embodiment of the present application can be used in a complete vehicle product (e.g., a light truck) related to the chassis 100 of the above-mentioned embodiments, and as a component of the chassis 100 or a related complete vehicle product (e.g., a light truck). Of course, it can also be produced or sold separately as an independent component.

[0054] In this article, the direction definition refers to the vehicle coordinate system. For example, the X direction is parallel to the ground and points to the front of the vehicle, which is used to describe the front-to-back direction of the cab; the Y direction is parallel to the ground and points to the left of the driver, which is used to describe the left-right direction of the cab; the Z direction is parallel to the ground and points upward, which is used to describe the up-down direction of the cab. In addition, the Y0 plane is the plane of symmetry between the left and right centers of the cab, the Z0 plane is a plane perpendicular to the Y0 plane and parallel to the ground, and the X0 plane is a plane perpendicular to both the Y0 plane and the Z0 plane.

[0055] See also Figure 2 and Figure 3 , Figure 2 A side view of a cab 10 provided in some embodiments of the present application with the door 2 omitted is shown. Figure 3 A side view of a cab 10 provided in some embodiments of the present application is shown.

[0056] The embodiment of the present application provides a cab 10, which includes a cab body 1 and a steering mechanism 5. The cab body 1 has a cockpit, and the cab body 1 includes a front portion 11 and side portions 12 located on both sides of the front portion 11. The side portions 12 are provided with wheel openings 121, and the wheel openings 121 are used to cooperate with the front wheels 20 and are arranged concentrically with the front wheels 20. The steering mechanism 5 includes a steering wheel 51, which is arranged in the cockpit. In the X direction, the maximum dimension L4 of the cab body 1 satisfies the value range of 1550mm≤L4≤1950mm, the distance between the center point of the steering wheel 51 and the center point of the wheel opening 121 is L11, and the value range of L11 satisfies the value range of -65mm≤L11≤335mm.

[0057] When the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 close to the front part 11, L11 takes a negative value, and when the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 away from the front part 11, L11 takes a positive value. In this article, the maximum dimension L4 of the driving body 1 may be the maximum dimension of the projection of the driving body on the Y0 plane measured along the X direction; similarly, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 may be the distance between the projections of the center point of the steering wheel 51 and the wheel opening 121 on the Y0 plane respectively measured along the X direction.

[0058] The driving body 1 refers to an external structure for forming the driving cab 10 . The driving body 1 includes a front portion 11 and side portions 12 . The side portions 12 refer to portions located at the left and right sides of the driving cab 10 .

[0059] A wheel opening 121 is provided on the side 12 of the driving body 1 close to the chassis 100 . The shape of the wheel opening 121 matches at least part of the contour of the front wheel 20 . The wheel opening 121 is used to cooperate with the front wheel 20 and is concentrically arranged with the front wheel 20 .

[0060] In the existing human-machine design of the cab, usually only attention is paid to the driving comfort of the driver (or passenger) in a sitting state in the cab (such as human-machine operation functions, driver's field of vision, etc.) and the impact of the door opening on the convenience of the driver (or passenger) getting on and off the vehicle. The position of the front wheel 20 is rarely used as a parameter for evaluating the convenience of the driver (or passenger) getting on and off the vehicle, and this parameter is particularly important for a cab with limited cab length or layout space.

[0061] Taking light trucks as an example, regulations require that the total length of such vehicles should not exceed 6 meters, which means that the shorter the length of the cab 10, the longer the cargo box, and the length of the cargo box directly affects the cargo capacity and product competitiveness of the truck.

[0062] Therefore, for a cab with a limited cab 10 length or limited layout space, the inventor needs to spend a lot of work to study how to perform the cab human-machine layout to simultaneously meet driving comfort and ease of getting on and off the vehicle. However, the present application can conveniently and effectively solve the above problems by incorporating the position of the front wheel 20 into the evaluation system of the driver's (or passenger's) ease of getting on and off the vehicle, solve the human-machine layout problem of the cab with a limited cab 10 length or layout space, so as to simultaneously meet driving comfort and ease of getting on and off the vehicle, and reserve design space for subsequent cab design (for example, low wind resistance design).

[0063] Furthermore, incorporating the position of the front wheel 20 into the evaluation index of the convenience of the driver (or passenger) getting on and off the vehicle is not only particularly important for a cab with limited cab length or layout space, but is also very important for a streamlined cab with a low wind resistance design.

[0064] Taking a light truck as an example, to a certain extent, the smaller the wind resistance, the more inclined the front windshield of the cab 10. Therefore, in order to ensure that the driver does not collide with the excessively inclined windshield and affect driving comfort, the driver's position needs to be moved back as a whole. The overall backward movement of the driver's position will directly increase the length of the cab 10, which is not conducive to improving the cargo capacity and the competitiveness of the vehicle product. Therefore, it is necessary to find the minimum size requirement that can meet the requirements of the human-machine layout of the cab 10 (especially the requirements of the convenience of getting on and off the vehicle), so as to reserve sufficient design space for other design requirements of the cab 10 (such as cab length design, low wind resistance design, etc.).

[0065] Therefore, for a cab with a limited cab 10 length or limited layout space, the inventor needs to spend a lot of work to study how to perform cab human-machine settings to take into account driving comfort, ease of getting on and off the vehicle, and low wind resistance performance, so as to further increase the cargo capacity of the truck and reduce energy consumption, and improve the competitiveness of the whole vehicle product. Based on this, the cab 10 in the embodiment of the present application, since the driver's sitting posture is determined by the steering wheel 51, by incorporating the parameter of the position of the front wheel 20 into the evaluation system of the convenience of getting on and off the vehicle, more specifically, by positioning the steering wheel 51 according to the position of the center point of the wheel mouth 121, a better solution for the cab human-machine layout that can meet the convenience of getting on and off the vehicle can be obtained, which is particularly important for trucks, especially light trucks, and is also a necessary condition for a cab with limited cab length and / or low wind resistance. In addition, compared with existing light trucks, the position of the driver's sitting posture relative to the whole vehicle can be innovated.

[0066] In one embodiment of the present application, by making the value range of the maximum dimension L4 of the driving body 1 in the X direction satisfy: 1550mm≤L4≤1950mm, and making the value range of the distance L11 between the center point of the steering wheel 51 and the center point of the wheel mouth 121 satisfy: -65mm≤L11≤335mm, the driver's sitting position can be moved backward when the maximum dimension of the driving body 1 is constant (especially for a cab 10 with a smaller length), and the driver gets on and off the vehicle from the rear side of the front wheel 20, so that enough space can be left at the front 11, so that the front 11 of the cab 10 can reserve design space for forming a streamlined structure, realize a low wind resistance cab 10 design, and then while ensuring getting on and off the vehicle, the wind resistance coefficient can be reduced, energy consumption can be reduced, and the cruising range of the cab 10 can be improved. When the cab 10 is a fuel vehicle, the fuel economy of the cab 10 can be improved, and when the cab 10 is an electric vehicle or a hybrid vehicle, the power consumption of the cab 10 can be reduced.

[0067] It is understandable that when the driver's sitting posture in the cab 10 is designed based on the center point of the steering wheel 51 relative to the wheel opening 121, other structural parts in the cab 10 can be adjusted in conjunction with the steering wheel 51 to achieve an overall design of the cab 10.

[0068] The maximum dimension of the driving body 1 along the X direction refers to the distance from the front end of the driving body 1 to the rear end of the driving body 1 along the X direction, and may also be the dimension of the projection of the driving body 1 on the Y0 plane along the X direction.

[0069] It can be understood that the larger the maximum dimension L4 of the driving compartment 1, the more space there is for human-machine arrangement in the cab 10, but this will cause the size of the cargo box to be reduced. On the contrary, the smaller the maximum dimension L4 of the driving compartment 1, the larger the size reserved for the cargo box, but the more limited the space there is for human-machine arrangement in the cab.

[0070] Therefore, the length of the cab 10 is directly related to the product competitiveness of the relevant vehicle products and the human-machine layout in the cab.

[0071] In the present application, by making the maximum dimension L4 of the driving body 1 along the X direction ≥ 1550mm, the driving requirements of light trucks can be better met, and by making the maximum dimension L4 of the driving body 1 ≤ 1950mm, the space occupied by the cab 10 can be reduced and the cargo box space can be increased when the size of the light truck is constant, so as to better meet the cargo needs of light trucks.

[0072] In addition, for a cab with limited cab length or layout space, the comfort of the human-machine layout in the cockpit and the convenience of getting on and off the vehicle are more prominent issues.

[0073] It can be understood that the larger the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121, the farther the driver's position is from the wheel center of the front wheel 20, and the longer the length of the cab 10 will be, which is beneficial to the convenience of getting on and off the cab 10, but is not beneficial to increasing the cargo capacity; on the contrary, the smaller the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121, to a certain extent, the driver's position is closer to the wheel center of the front wheel 20, resulting in a smaller range for the driver to get on and off the vehicle at the door opening, which is not beneficial to improving the convenience of getting on and off the vehicle, but the closer the driver's position is to the wheel center of the front wheel 20 means that the length of the cab can be shortened. Under the condition that the relevant vehicle length is constant, a longer cargo box length can be obtained, which is beneficial to increasing the cargo capacity and improving product competitiveness.

[0074] For the cab 10 in the above embodiment, by making the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 ≥ -65mm, the driving position can be moved backward, so as to form a streamlined structure at the front part 11, and the driver's sitting position is moved to the rear side of the wheel center of the front wheel 20, so as to form enough space behind the front wheel 20 for the driver to get on and off the vehicle. In addition, by making the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 ≤ 335mm, the driving position can be prevented from being moved too far backward, so that the cockpit space can be reduced, and the cargo box space can be increased when the size of the light truck is constant, so as to improve the cargo carrying performance of the light truck.

[0075] Therefore, by making L11 in the embodiment of the present application satisfy: -65mm≤L11≤335mm, it is possible to achieve a better human-machine layout to meet driving comfort and convenience of getting on and off the vehicle within a limited length of the cab 10, while also reserving sufficient design space for other cab 10 designs (for example, low wind resistance design) to further achieve energy consumption reduction.

[0076] In some optional embodiments, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies: -15mm≤L11≤285mm. Further optionally, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies: 35mm≤L11≤235mm. Further optionally, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies: 85mm≤L11≤185mm.

[0077] In a specific embodiment of the present application, L11=105mm, 135mm or 155mm. In this case, the cab 10 and the front wheel 20 can be arranged compactly, so that the front portion 11 can have an appropriate space for forming a streamlined structure to achieve the design of a low-wind resistance cab 10. In addition, while reducing the cab space, the convenience of getting on and off the vehicle can be improved, and the performance of the cab 10 can be improved.

[0078] In some optional embodiments, the maximum dimension L4 of the driving compartment 1 satisfies a range of 1600 mm ≤ L4 ≤ 1900 mm. Further optionally, the maximum dimension L4 of the driving compartment 1 satisfies a range of 1650 mm ≤ L4 ≤ 1850 mm. Further optionally, the maximum dimension L4 of the driving compartment 1 satisfies a range of 1700 mm ≤ L4 ≤ 1800 mm.

[0079] In a specific embodiment of the present application, L4=1750 mm, which can make the space of the cab 10 moderate, take into account both driving requirements and cargo requirements, and improve the performance of light trucks.

[0080] In some optional embodiments, the side portion 12 is provided with a door 2, and in the X direction, the front edge and the rear edge of the door 2 are respectively located on both sides of the wheel opening 121, and a wheel cover area S1 is formed between the front edge of the door 2 and the rear edge of the wheel opening 121, and a step area S2 is formed between the rear edge of the door 2 and the rear edge of the wheel opening 121. The orthographic projection of the steering wheel 51 on the side portion 12 is at least partially located in the wheel cover area S1, and has a preset spacing from the rear edge of the door 2 in the X direction.

[0081] The side portion 12 is provided with a door opening 122 for the driver to get on and off the vehicle, and the door 2 can be rotatably connected to the side portion 12 and cover the door opening 122, or the door 2 can also be slidably connected to the side portion 12 and cover the door opening 122. The door 2 may be a special-shaped structure, the front edge of the door 2 refers to the frontmost edge along the X direction, and the rear edge of the door 2 refers to the rearmost edge along the X direction.

[0082] By making the front edge and the rear edge of the door 2 respectively located on both sides of the wheel opening 121, a step area S2 can be formed between the rear edge of the door 2 and the rear edge of the wheel opening 121. In addition, by making the orthographic projection of the steering wheel 51 on the side portion 12 at least partially located in the wheel cover area S1 and having a preset spacing with the rear edge of the door 2 in the X direction, the driver's sitting position can correspond to the step area S2, so that the driver can get on and off the vehicle through the step area S2, thereby improving the convenience of getting on and off the vehicle.

[0083] Optionally, the projection of the center point of the steering wheel 51 on the Y0 plane is located within the projection area of ​​the wheel cover area S1 on the Y0 plane. Furthermore, the center point of the steering wheel 51 can be located between the center point of the wheel mouth 121 and the rear edge of the wheel mouth 121, that is, the projection of the center point of the steering wheel 51 on the Y0 plane is located between the projection point of the center point of the wheel mouth 121 on the Y0 plane and the projection of the rear edge of the wheel mouth 121 on the Y0 plane. Accordingly, the front side of the human-machine position can be limited to the front wheel area, which is conducive to the arrangement of man-machine in a limited cab space, so as to allow a streamlined structure to be formed in the front part 11, while making it easier for the driver to get on and off the vehicle from the step area S2, thereby improving the convenience of getting on and off the vehicle.

[0084] See also Figures 2 to 4 , Figure 4 1 shows a side view of a cab 10 provided in some other embodiments of the present application. In some optional embodiments, the cab 10 further includes a driving seat 4, which is disposed in the cockpit, and the orthographic projection of the driving seat 4 on the side portion 12 is at least partially located in the stepping area S2.

[0085] Wherein, along the X direction, the center point of the driving seat 4 is located on the side of the center point of the wheel opening 121 away from the front part 11 and the distance from the center point of the wheel opening 121 is L10, the distance between the center point of the driving seat 4 and the center point of the wheel opening 121 is L10, and the value range of L10 satisfies 365mm≤L10≤765mm. Wherein, the distance L10 between the center point of the driving seat 4 and the center point of the wheel opening 121 can be the distance between the projection point of the center point of the driving seat 4 on the Y0 plane and the projection point of the center point of the wheel opening 121 on the Y0 plane measured along the X direction.

[0086] That is, the driving seat 4 can be designed to match the position of the steering wheel 51. Compared with the existing cab 10 of a light truck, by moving the driving seat 4 backward, sufficient space can be reserved for the front part 11 of the cab 10 within a limited driving length, so as to allow the front part 11 of the cab 10 to form a streamlined structure and realize a low wind resistance cab 10 design, thereby reducing the wind resistance coefficient, reducing energy consumption, and improving the cruising range of the cab 10 while ensuring getting on and off the vehicle.

[0087] Specifically, the center point of the driver's seat 4 is located on the side away from the center point of the wheel opening 121 and the distance L10 between the center point of the wheel opening 121 is ≥365 mm, so that the driving position can be moved backward, so as to form a streamlined structure at the front part 11, and the size of the step area S2 along the X direction is increased, so as to facilitate the driver to get on and off the vehicle. In addition, by making the distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121 ≤765 mm, the driving position can be prevented from being moved too far backward, so that the cockpit space can be reduced, and the cargo box space can be increased when the size of the light truck is constant, so as to improve the cargo carrying performance of the light truck.

[0088] In some optional embodiments, the value range of L10 satisfies 415mm≤L10≤715mm. Further optionally, the value range of the distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121 satisfies 465mm≤L10≤665mm. Further optionally, the value range of the distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121 satisfies 515mm≤L10≤615mm.

[0089] In a specific embodiment of the present application, L10=525mm, 565mm or 605mm, which can leave a moderate space at the front 11, so that the front 11 of the cab 10 forms a streamlined structure, and realizes a low wind resistance cab 10 design. In addition, it can also improve the convenience of getting on and off the vehicle and improve the performance of the cab 10 while reducing the driving cavity space.

[0090] See also Figures 2 to 5 , Figure 5 1 shows a side view of a cab 10 provided by some other embodiments of the present application. In some optional embodiments, the cab 10 further includes a brake pedal 3, which is disposed in the cab and connected to the front portion 11. When the brake pedal 3 is in a non-braking state, the center point of the brake pedal 3 is located on the side of the center point of the wheel opening 121 facing the front portion 11 and the distance from the center point of the wheel opening 121 is L9, and the value range of L9 satisfies: 10mm≤L9≤410mm.

[0091] Among them, the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121 can be the distance between the projection point of the center point of the brake pedal 3 on the Y0 plane and the projection point of the center point of the wheel opening 121 on the Y0 plane measured along the X direction.

[0092] That is, the brake pedal 3 can be designed to match the position of the steering wheel 51. Compared with the existing cab 10 of a light truck, by moving the brake pedal 3 backward, sufficient space can be reserved for the front part 11 of the cab 10 within a limited driving length, so that the front part 11 of the cab 10 forms a streamlined structure, realizing a low wind resistance cab 10 design, thereby being able to reduce the wind resistance coefficient, reduce energy consumption, and improve the cruising range of the cab 10 while ensuring getting on and off the vehicle.

[0093] It can be understood that the larger the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121, the closer the driver's seat position is to the front wheel. At this time, the size of the pedal area for the driver to get on and off the vehicle will be reduced, which has an adverse effect on the convenience of the driver getting on and off the vehicle; on the contrary, the smaller the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121, the farther the driver's seat position will be from the front wheel, and the size of the pedal area for the driver to get on and off the vehicle will increase, which is beneficial to the convenience of the driver getting on and off the vehicle, but at the same time it will also increase the overall length of the cab, which is not conducive to increasing the cargo capacity of the entire vehicle.

[0094] Specifically, when the brake pedal 3 is in a non-braking state, the center point of the brake pedal 3 is located at the side of the center point of the wheel opening 121 facing the front part 11 and the distance between the center point of the wheel opening 121 and the center point of the wheel opening 121 is L9≤410mm, that is, the driving position can be moved back a sufficient distance to increase the size of the step area S2 along the X direction, so as to facilitate the driver to get on and off the vehicle. In addition, by making the center point of the brake pedal 3 located at the side of the center point of the wheel opening 121 facing the front part 11 and the distance between the center point of the wheel opening 121 and the center point of the wheel opening 121 is L9≥10mm, the driving position can be prevented from moving back too much, thereby reducing the cockpit space, and increasing the cargo box space when the size of the light truck is constant, so as to improve the cargo carrying performance of the light truck.

[0095] In some optional embodiments, when the brake pedal 3 is in a non-braking state, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 satisfies a range of 60mm≤L9≤360mm. Further optionally, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 satisfies a range of 110mm≤L9≤310mm. The distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 satisfies a range of 110mm≤L9≤310mm.

[0096] In a specific embodiment of the present application, L9=180mm, 210mm or 250mm, which can reserve design space for the front part 11 to form a streamlined structure under the limited cab length, thereby facilitating the design of a low wind resistance cab 10. In addition, it can also improve the convenience of getting on and off the vehicle and improve the performance of the cab 10 while reducing the driving cavity space.

[0097] See also Figures 2 to 6 , Figure 6 The side view of the cab 10 provided by some other embodiments of the present application is shown. In some optional embodiments, in the X direction, the distance between the center point of the wheel opening 121 and the rear edge of the door 2 is L1, and the distance between the front edge of the door 2 and the rear edge of the door 2 is L2. The value range of L1 satisfies 630mm≤L1≤1030mm, and the value range of the ratio of L1 to L2 satisfies 0.65≤L1 / L2≤0.95. The distance L2 between the front edge and the rear edge of the door 2 can be the distance between the projection of the front edge of the door 2 on the Y0 plane and the projection of the rear edge of the door on the Y0 plane measured along the X direction; similarly, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 can be the distance between the projections of the rear edge of the door 2 and the wheel opening 121 on the Y0 plane respectively measured along the X direction.

[0098] Typically, the front edge of the door 2 corresponds to the front edge of the door opening of the door 2, and the pivot point of the door 2 is typically disposed at the front edge of the door 2 so as to be able to fully open and utilize the door opening of the door 2 to improve the convenience of the driver getting on and off the vehicle.

[0099] It can be understood that the greater the distance between the rear edge of the door 2 and the center point of the wheel opening 121, the more convenient it is for the driver to get on and off the vehicle, but it will also lead to an increase in the overall length of the cab, which will directly affect the cargo capacity; on the contrary, the smaller the distance between the rear edge of the door 2 and the center point of the wheel opening 121, the shorter the cab length will be when the length of the entire vehicle is constant, and the larger the cargo box can be designed, but the less convenient it is for the driver to get on and off the vehicle, and at the same time, there is less space left for wind resistance design, making it difficult to achieve a low wind resistance design.

[0100] By making the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 ≥ 630mm, the space of the step area S2 can be increased to improve the convenience for the driver to get on and off the vehicle. By making the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 ≤ 1030mm, the space of the cab 10 can be controlled within a reasonable range, thereby increasing the cargo box space while keeping the length of the vehicle constant.

[0101] Furthermore, by making the ratio a of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 and the distance L2 between the front edge and the rear edge satisfy: 0.65≤a≤0.95, on the one hand, sufficient space can be left at the front portion 11, so that the front portion 11 of the cab 10 forms a streamlined structure, realizing a low wind resistance cab 10 design, thereby being able to reduce the wind resistance coefficient, reduce energy consumption, and improve the cruising range of the cab 10 while ensuring getting on and off the vehicle. On the other hand, by setting L1 relatively large, a relatively ample space for getting on the vehicle can be provided for the driver, which is conducive to improving the convenience of getting on and off the vehicle.

[0102] For the cab 10 in the above embodiment, when the ratio a of L1 to L2 is less than 0.65, the door 2 is moved forward more than the center point of the wheel opening 121, resulting in a smaller space for getting on and off the vehicle behind the front wheel, affecting the convenience of getting on and off the vehicle. In addition, the door 2 is moved forward more than the center of the front wheel 20, which will also make it difficult for the front part 11 of the cab 10 to form a streamlined structure, and the effect of reducing the wind resistance of the cab 10 is not obvious. When the ratio a of L1 to L2 is greater than 0.95, the door 2 is moved backward more than the center point of the wheel opening 121. In the case of a certain length of the entire vehicle, the length occupied by the cab 10 is too large, affecting the cargo box space, and it is difficult to meet the transportation needs of light trucks.

[0103] Therefore, by making the value range of L1 in the embodiment of the present application satisfy 630mm≤L1≤1030mm, and the ratio a of L1 and L2 satisfy: 0.65≤a≤0.95, the cab 10 can have the possibility of reducing the size of the cab and reducing energy consumption while ensuring the convenience of getting on and off the vehicle.

[0104] In some optional embodiments, the range of values ​​of the distance L1 between the rear edge of the vehicle door 2 and the center point of the wheel opening 121 satisfies 680mm≤L1≤980mm. Further optionally, the range of values ​​of the distance L1 between the rear edge of the vehicle door 2 and the center point of the wheel opening 121 satisfies 780mm≤L1≤930mm. Further optionally, the range of values ​​of the distance L1 between the rear edge of the vehicle door 2 and the center point of the wheel opening 121 satisfies 780mm≤L1≤880mm.

[0105] In some optional embodiments, in the X direction, the ratio a of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 to the distance L2 between the front edge and the rear edge satisfies: 0.75≤a≤0.85. For example, a may be 0.77, 0.795 or 0.81, in other words, L1 / L2=0.77, L1 / L2=0.795 or L1 / L2=0.81, and the ratio of the distance between the front edge of the door 2 of the cab 10 and the center point of the wheel opening 121 to the distance between the front edge and the rear edge of the door 2 is moderate, which can reduce the size of the cab 10 and meet the needs of the driver to get on and off the vehicle, while allowing a smaller size of the cab 10 and allowing the front part 11 of the cab 10 to form a streamlined structure, so as to take into account the convenience of getting on and off the vehicle, shorten the length of the cab and reduce the wind resistance of the cab 10.

[0106] In a specific embodiment of the present application, L1=833mm, L2=1048mm, a=L1 / L2=0.795, and along the X direction, the relative positions between the front and rear edges of the door 2 and the center point of the wheel opening 121 can meet the space of the cab 10 and the requirements of getting on and off the vehicle. At the same time, it also reserves design space for the front part 11 of the cab 10 to form a streamlined structure, which is beneficial to reducing the wind resistance of the cab 10 and reducing energy consumption.

[0107] See also Figures 2 to 7 , Figure 7 The schematic diagram of the structure of the steering mechanism 5 provided in some embodiments of the present application is shown. In some optional embodiments, the steering mechanism 5 further includes a steering shaft 52 and a steering shaft bracket 53, the steering shaft 52 is fixedly mounted on the driving compartment 1 through the steering shaft bracket 53, and the steering wheel 51 is transmission-connected with the steering shaft 52, the inclination angle of the steering shaft 52 relative to the horizontal plane is α5, and the value range of α5 satisfies: 45°≤α5≤65°.

[0108] In the cab 10, the steering wheel 51 is often connected to the steering shaft 52 in transmission connection. The steering shaft 52 is fixedly mounted on the front part 11 of the cab body 1 through the steering shaft bracket 53. When the position of the steering wheel 51 relative to the center point of the wheel mouth 121 along the X direction is adjusted, the position of the steering shaft 52 and the steering shaft bracket 53 relative to the wheel mouth 121 and the front part 11 will be adaptively adjusted.

[0109] Since the front portion 11 of the cab 1 is also connected to a braking system and an instrument cluster, etc., the inclination angle α5 of the steering shaft 52 relative to the horizontal plane can be set to satisfy the range of 45°≤α5≤65°. After adjusting the position of the steering wheel 51 along the X direction relative to the center point of the wheel opening 121, the gap between the steering shaft bracket 53 and the braking system and the instrument cluster can be made greater than a preset distance. This can maximize the utilization of the cockpit space while leaving space for structural installation, thereby making it easier to realize the design of a low wind resistance cab 10.

[0110] Further optionally, the inclination angle α5 of the steering shaft 52 relative to the horizontal plane satisfies the range of 50°≤α5≤60°. In a specific embodiment of the present application, the inclination angle α5 of the steering shaft 52 relative to the horizontal plane is 55° to further improve the performance of the cab 10.

[0111] See also Figures 1 to 8 , Figure 8 1 shows a top view of a chassis 100 provided in some embodiments of the present application. In some optional embodiments, the steering mechanism 5 further includes a steering rod 54 and a steering gear 55, the steering gear 55 is fixedly arranged on the frame and located below the cab 10, the two ends of the steering rod 54 are respectively connected to the steering gear 55 and the wheel hub of the front wheel 20, and the length L13 of the steering rod 54 along the X direction satisfies: 440mm≤L13≤540mm.

[0112] The steering rod 54 is used to connect the steering wheel 51 and the front wheels 20 to convert the driver's steering operation into an actual steering action of the front wheels 20 .

[0113] Compared with the existing light truck, the light truck in the embodiment of the present application adjusts the relative position relationship between the center point of the steering wheel 51 and the wheel opening 121, that is, the center point of the wheel opening 121 is set forward along the X direction relative to the steering wheel 51 of the existing light truck. Since the end of the steering rod 54 is connected to the hub of the front wheel 20, the hub of the front wheel 20 can be moved forward on the basis of the forward movement of the center point of the wheel opening 121, so that the length L13 of the steering rod 54 along the X direction can be reduced, so that the length L13 of the steering rod 54 along the X direction meets: 440mm≤L13≤540mm, so as to shorten the cockpit space.

[0114] In one embodiment, the length L13 of the steering tie rod 54 along the X direction is 470 mm, 490 mm or 510 mm.

[0115] Specifically, the steering mechanism 5 also includes a steering rocker arm 56 and a steering elbow arm. The first end of the steering rod 54 is connected to the steering gear 55 through the steering rocker arm 56, and the second end of the steering rod 54 is connected to the hub of the front wheel 20 through the steering elbow arm.

[0116] When the driver turns the steering wheel 51, the steering rocker arm 56 will move with the rotation of the steering wheel 51, and at the same time, the rotation of the steering wheel 51 is converted into movement of the vehicle along the Y direction through the steering rod 54. The steering arm is used to transmit steering force to improve the stability of the chassis 100 during the steering process.

[0117] Furthermore, by connecting the first end of the steering rod 54 to the steering gear 55 via the steering rocker arm 56 and connecting the second end of the steering rod 54 to the hub of the front wheel 20 via the steering arm, the steering reliability can be improved while shortening the length L13 of the steering rod 54 along the X direction, making it easier to set up the steering mechanism.

[0118] It can be understood that when the length L13 of the steering rod 54 along the X direction is adjusted accordingly, the length dimension L8 of the front overhang of the cab 10 will also be further compressed.

[0119] In some optional embodiments, in the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving compartment 1 satisfies: 0.38≤L8 / L4≤0.48.

[0120] It is understandable that when the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the cab 1 is less than 0.38, the streamlined structure formed at the front of the cab 10 may be affected. When the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the cab 1 is greater than 0.48, the length of the cab 10 along the X direction is too short, resulting in poor convenience for getting on and off the vehicle.

[0121] In addition, it can be understood that the smaller the front overhang size, the smaller the front cabin layout space, but the corresponding vehicle's passability is better, and the man-machine space left for the cab will be larger, which is more conducive to improving driving comfort and convenience of getting on and off the vehicle; on the contrary, the larger the front overhang size, the worse the corresponding vehicle's passability is, and the man-machine space left for the cab will be smaller, which is not conducive to the driver getting on and off the vehicle, but it is beneficial for the front cabin layout space.

[0122] Therefore, the cab 10 in the embodiment of the present application can reserve sufficient design space for the convenience of the driver getting on and off the vehicle and designing a streamlined cab while ensuring that the passability requirements are met by setting the ratio of the length dimension L8 of the front overhang in the X direction to the maximum dimension L4 of the cab body 1 to satisfy the following condition: 0.38≤L8 / L4≤0.48.

[0123] Further optionally, in the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving compartment 1 satisfies: 0.40≤L8 / L4≤0.45. For example, L8 / L4=0.40, L8 / L4=0.42 or L8 / L4=0.45. The above setting can make the length dimension of the front overhang along the X direction moderate to take into account the cargo carrying requirements of the light truck and the driver's requirements for getting on and off the vehicle.

[0124] In some optional embodiments, in the X direction, the length dimension L8 of the front overhang of the cab 10 satisfies 640 mm ≤ L8 ≤ 840 mm, and the length dimension of the front overhang is: the distance from the front end of the cab 10 to the center point of the wheel opening 121 along the X direction. Further optionally, in the X direction, the value range of the length dimension L8 of the front overhang satisfies: 690 mm ≤ L8 ≤ 790 mm.

[0125] In a specific embodiment, in the X direction, the length dimension L8 of the front overhang of the cab 10 is 700 mm, 720 mm, 740 mm or 760 mm.

[0126] It is understandable that, under the condition that the size of the chassis 100 along the X direction is constant, by adjusting the position of the front wheels 20, the length dimension L8 of the front overhang of the cab 10 and the wheelbase dimension L14 of the chassis 100 can be redistributed.

[0127] In some optional embodiments, the value range of the wheelbase L14 satisfies 3360mm≤L14≤4000mm.

[0128] The wheelbase dimension L14 of the chassis 100 is: the distance from the center point of the front wheel 20 to the center point of the rear wheel 30 in the X direction. The wheelbase L14 may be the distance measured along the X direction from the projections of the center points of the front wheel 20 and the rear wheel 30 on the Y0 plane.

[0129] The specific value of the wheelbase L14 is related to the length dimension L8 of the front overhang and the total length of the chassis along the X direction. By making the wheelbase L14 ≥ 3360 mm, the space available for the power battery can be increased to better meet the large power demand. By making the wheelbase L14 ≤ 4000 mm, space can be reserved for the installation of other functional systems on the chassis 100 to meet the functional requirements of the chassis 100 and improve the performance of the chassis 100.

[0130] In some embodiments, L14 = 3450 mm, 3750 mm, or 3950 mm.

[0131] In a specific embodiment of the present application, L8=740mm, L14=3750mm, at which time the power battery capacity can be expanded from 100kWh to 120kWh.

[0132] See also Fig. 9 , Fig. 9 A top view of a cab 10 provided in some embodiments of the present application is shown. In some optional embodiments, in the Y direction, the maximum dimension of the cab body 1 is L7, and the value range of L7 satisfies: 2120mm≤L7≤2220mm.

[0133] The maximum size of the driving compartment 1 along the Y direction refers to the distance from the leftmost end to the rightmost end of the projection of the driving compartment 1 on the X0 plane measured along the Y direction, excluding the rearview mirror and blind spot mirror of the cab 10, that is, the distance between the two side portions 12 of the driving compartment 1 along the Y direction. Among them, the maximum size of the driving compartment 1 along the Y direction is related to the size of the cargo box along the Y direction, and the maximum size of the driving compartment 1 along the Y direction can be selected to be equal to the size of the cargo box along the Y direction to reduce wind resistance.

[0134] In a specific embodiment of the present application, the dimension of the cargo box along the Y direction is set to 2170 mm, so the maximum dimension L7 of the driving compartment 1 is 2170 mm, so that the surface of the side 12 of the driving compartment 1 is flush with the cargo box to reduce the drag coefficient.

[0135] See also Figures 2 to 12 , Fig.10 The structure diagram of the cab 10 provided in some embodiments of the present application is shown. Fig.11 FIG. 1 shows a side view of a cab 10 provided in some other embodiments of the present application. Fig.12 A schematic diagram of measuring the tilt angle provided by some embodiments of the present application is shown.

[0136] In some optional embodiments, the front portion 11 includes a windshield portion 111 , and the windshield portion 111 is inclined relative to a vertical plane and has an inclination angle of α1 , wherein a value range of α1 satisfies: 15°≤α1≤25°.

[0137] The inclination angle α1 of the windshield portion 111 relative to the vertical plane can be characterized by the angle between the inclination line of the windshield portion 111 and the vertical line. The inclination line of the windshield portion 111 refers to the line connecting the first intersection point and the second intersection point, the first intersection point is the middle point of the lower edge of the windshield portion 111 along the Y direction, and the second intersection point is the intersection point formed by the windshield portion 111 and the arc of 457 mm made from the first intersection point.

[0138] It can be understood that, the larger the inclination angle α1 of the windshield portion 111 relative to the vertical plane, the smaller the positive pressure on the cab, which is beneficial to reducing the drag coefficient, but at the same time it will force the driver to move backward to avoid affecting the driving field of view, operability, etc. The backward movement of the driver's position will inevitably lead to an increase in the overall length of the cab, which is also disadvantageous for the cargo capacity of the whole vehicle; on the contrary, the smaller the inclination angle α1 of the windshield portion 111 relative to the vertical plane, the more conducive it is to human-machine arrangement and reduce the length of the cab, but at this time the positive pressure on the cab will increase, thereby increasing wind resistance, which is disadvantageous for the cruising range of the whole vehicle.

[0139] In the present application, by making the inclination angle α1 of the windshield portion 111 relative to the vertical plane ≥ 15°, the windshield portion 111 can be tilted at a sufficient angle relative to the vertical plane to reduce the positive pressure area, reduce the drag coefficient, and reduce the energy consumption of the cab 10. By making the inclination angle α1 of the windshield portion 111 relative to the vertical plane ≤ 25°, the windshield portion 111 can be tilted not too much relative to the vertical plane, so that the internal space of the cockpit can meet the requirements, thereby improving the driver's comfort and the convenience of getting on and off the vehicle.

[0140] In a specific embodiment of the present application, α1 = 18°, 20° or 23°, so as to take into account the requirements of reducing wind resistance and shrinking the cockpit space, thereby improving the performance of the cab 10.

[0141] In some optional embodiments, the front portion 11 further includes a first portion 112 and a second portion 113 arranged in the Z direction, and the second portion 113 is located on a side of the first portion 112 facing the windshield portion 111 and is connected to the windshield portion 111. Along the Z direction, the second portion 113 is inclined relative to the vertical plane and the inclination angle is α2, and the difference between the inclination angle α1 of the windshield portion 111 relative to the vertical plane and the inclination angle α2 of the second portion 113 relative to the vertical plane satisfies: 0°≤α1-α2≤5°.

[0142] The first section 112 may be a region where a front bumper is disposed, and the second section 113 may be a region where a front panel is disposed.

[0143] Similar to the windshield portion 111, the inclination angle α2 of the second section 113 relative to the vertical plane can be characterized by the angle between the inclination line of the second section 113 and the vertical line. The inclination line of the second section 113 refers to the line connecting the third intersection point and the fourth intersection point, the third intersection point is the middle point of the lower edge of the second section 113 along the Y direction, and the fourth intersection point is the intersection point formed by the arc of 457 mm from the third intersection point and the second section 113.

[0144] As the difference between the inclination angle α1 of the windshield portion 111 relative to the vertical plane and the inclination angle α2 of the second section 113 relative to the vertical plane becomes smaller, the inclination angles of the windshield portion 111 and the second section 113, that is, the windshield angles are closer, and the drag coefficient is smaller. Therefore, by making 0°≤α1-α2≤5°, the energy consumption of the cab 10 can be better reduced, and the cruising range and driving performance can be improved.

[0145] It can be understood that since the cab 10 also includes functional structures such as a steering wheel 51 and a brake pedal 3, which need to be connected to the second section 113 of the driving compartment 1, the inclination angle α2 of the second section 113 relative to the vertical plane cannot be set too large, that is, the specific angle of the inclination angle α2 of the second section 113 relative to the vertical plane can be adjusted according to the inclination angle α1 of the windshield portion 111 relative to the vertical plane and the structure of the cab 10, so as to take into account the setting requirements of the windshield and the internal functional structure of the cab 10.

[0146] See also Figures 1 to 13 , Fig.13 A simplified diagram of the inclination angle of the first section provided in some embodiments of the present application is shown. In some optional embodiments, the inclination angle of the first section 112 relative to the vertical plane is smaller than the inclination angle of the second section 113 relative to the vertical plane, and the inclination angle of the first section 112 relative to the vertical plane is α3, 0°≤α3≤10°.

[0147] It can be understood that the inclination angle of the first section 112 has an impact on both wind resistance and the internal space of the cab. For example, the larger the inclination angle of the first section 112, the smaller the windward area of ​​the front of the cab, which is beneficial for reducing wind resistance, but has a limiting effect on the space of the human-machine arrangement (for example, brake pedals, steering wheels and other components) in the cab. In one embodiment of the present application, when the maximum size of the cab 10 along the X direction is constant, by reducing the inclination angle α3 of the first section 112 relative to the vertical plane, the second section 113 and the windshield 111 can be moved forward along the X direction, thereby increasing the internal space of the cab, making it easier to arrange the functional components in the cab 10, and improving the driver's comfort and convenience of getting on and off the vehicle.

[0148] In a specific embodiment of the present application, α3 = 0° or 5°, which can reduce wind resistance to a certain extent, avoid excessive arrangement of components in the cab, and facilitate the setting of the front bumper, thereby improving the anti-collision capability of the cab 10.

[0149] In some optional embodiments, the maximum dimension of the first section 112 along the Z direction is L5, and the value range of L5 satisfies 320 mm ≤ L5 ≤ 420 mm. The maximum dimension L5 of the first section 112 along the Z direction may be the dimension of the projection of the first section 112 on the Y0 plane measured along the Z direction.

[0150] Since the first section 112 is usually formed by the front bumper, the size of the first section 112 along the Z direction can be represented by the distance from the lowest end of the front bumper along the Z direction to the fifth intersection, and the fifth intersection is the uppermost end of the middle position of the front bumper along the Y direction.

[0151] By making the maximum dimension L5 of the first section 112 along the Z direction ≥ 320 mm, the aesthetic appearance of the cab 10 and the height of the license plate that can be set can be improved. Since the inclination angle α3 of the first section 112 relative to the vertical plane is smaller than the inclination angle α2 of the second section 113 relative to the vertical plane, by making the maximum dimension L5 of the first section 112 along the Z direction ≤ 420 mm, the height of the first section 112 along the Z direction can be reduced, so as to reduce the area of ​​the positive pressure zone of the front part 11 of the cab 10 and reduce the drag coefficient.

[0152] In a specific embodiment of the present application, L5=340 mm, 370 mm or 400 mm, so as to take into account the requirements of reducing the wind resistance coefficient and setting up the internal functional structure of the cab 10.

[0153] In some optional embodiments, along the Z direction, the distance between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is L6, and the value range of L6 satisfies 220 mm≤L6≤320 mm.

[0154] The lower edge of the front wheel 20 is the ground line when the cab 10 is in an unloaded state, so the distance between the lower edge of the first section 112 and the lower edge of the front wheel 20 is the distance from the lower edge of the front bumper to the ground line along the Z direction.

[0155] It can be understood that the distance L6 between the lower edge of the first section 112 and the lower edge of the front wheel 20 is related to the passability and wind resistance of the vehicle. The larger the distance L6 between the lower edge of the first section 112 and the lower edge of the front wheel 20, the larger the approach angle and the better the passability of the vehicle. However, due to the increase in ground clearance, the wind resistance will also increase, which is not conducive to reducing energy consumption. On the contrary, the smaller the distance L6 between the lower edge of the first section 112 and the lower edge of the front wheel 20, the wind resistance will be reduced accordingly, which is conducive to improving the cruising range, but the passability of the vehicle will deteriorate.

[0156] In one embodiment of the present application, by making the distance L6 between the lowest edge of the first section 112 and the lower edge of the front wheel 20 ≥ 220 mm, the ground clearance of the front bumper along the Z direction can be increased, the risk of collision between the cab 10 and the ground can be reduced, and the cab 10 can be driven on various road conditions. In addition, by making the distance L6 between the lowest edge of the first section 112 and the lower edge of the front wheel 20 ≤ 320 mm, the ground clearance can be prevented from being too large, the wind resistance coefficient can be reduced, the energy consumption of the cab 10 can be reduced, and the cruising range and driving performance can be improved.

[0157] In some optional embodiments, the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 satisfies 235 mm ≤ L6 ≤ 305 mm. Further optionally, the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 satisfies 250 mm ≤ L6 ≤ 290 mm.

[0158] In a specific embodiment of the present application, L6=250 mm, 270 mm or 300 mm, so as to take into account both the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0159] See also Fig.14 , Fig.14 A side view of a cab 10 provided in accordance with some further embodiments of the present application is shown.

[0160] In some optional embodiments, the front portion 11 also includes a third zone 114. Along the Z direction, the third zone 114 is located on the side of the windshield portion 111 away from the wheel opening 121 and is connected to the windshield portion 111. The third zone 114 is inclined relative to the vertical plane and the inclination angle is α4, and the value range of α4 satisfies: 25°≤α4≤40°.

[0161] The third section 114 refers to the section located above the windshield along the Z direction. The third section 114 can be integrally arranged with the first section 112 and the second section 113 and serve as a roof of the cab 10. The third section 114 can also be arranged separately and form a deflector.

[0162] Similar to the windshield portion 111, the inclination angle α4 of the third section 114 relative to the vertical plane can be characterized by the angle between the inclination line of the third section 114 and the vertical line. The inclination line of the third section 114 refers to the line connecting the sixth intersection point and the seventh intersection point, the sixth intersection point is the middle point of the lower edge of the third section 114 along the Y direction, and the seventh intersection point is the intersection point formed by the third section 114 and the arc of 457 mm made from the sixth intersection point.

[0163] By making the inclination angle α4 of the third section 114 relative to the vertical plane ≥ 25°, the third section 114 can be tilted at a sufficient angle relative to the vertical plane to reduce the drag coefficient and reduce the energy consumption of the cab 10. By making the inclination angle α4 of the third section 114 relative to the vertical plane ≤ 40°, the third section 114 can be tilted not too much relative to the vertical plane, so that the internal space of the cockpit can meet the requirements, thereby improving the driver's comfort and the convenience of getting on and off the vehicle.

[0164] In a specific embodiment of the present application, α4=30°, 33°, 35° or 38°, so as to take into account both the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0165] See also Figures 1 to 14 The cab 10 provided in the embodiment of the present application may include a driving compartment 1 and a door 2. The driving compartment 1 includes a front portion 11 and side portions 12 located on both sides of the front portion 11. The side portions 12 are provided with wheel openings 121. The wheel openings 121 are used to cooperate with the front wheels 20 and are concentrically arranged with the front wheels 20.

[0166] In the X direction, the maximum dimension of the driving compartment 1 is L4=1750 mm, and the length dimension of the front overhang is L8=740 mm.

[0167] In the X direction, the front edge and the rear edge of the door 2 are respectively located on both sides of the center point of the wheel opening 121, and in the X direction, the distance between the front edge and the rear edge is L2=1048mm, and the distance between the rear edge of the door 2 and the center point of the wheel opening 121 is L1=833mm. And / or, the cab 10 further includes a brake pedal 3, when the brake pedal 3 is in a non-braking state, along the X direction, the center point of the brake pedal 3 is located on the side of the center point of the wheel opening 121 facing the front part 11 and the distance from the center point of the wheel opening 121 is L9=210mm. And / or, the cab 10 further includes a driver's seat 4, along the X direction, the center point of the driver's seat 4 is located on the side of the center point of the wheel opening 121 away from the front part 11 and the distance from the center point of the wheel opening 121 is L10=565mm. And / or, the cab 10 further includes a steering wheel 51 , and along the X direction, the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 close to the front portion 11 and the distance L11 from the center point of the wheel opening 121 is 135 mm.

[0168] Furthermore, the front portion 11 includes a windshield portion 111, which is inclined relative to the vertical plane and has an inclination angle α1 of 20°. The front portion 11 also includes a first zone 112, a second zone 113 and a third zone 114 arranged in the Z direction. The difference between the inclination angle α1 of the windshield portion 111 relative to the vertical plane and the inclination angle α2 of the second zone 113 relative to the vertical plane satisfies: 0°≤α1-α2≤5°, the inclination angle α3 of the first zone 112 relative to the vertical plane is 0°, and the inclination angle of the third zone 114 relative to the vertical plane is α4=33°.

[0169] Furthermore, the minimum dimension of the first section 112 along the Z direction is L5=370 mm, and the distance between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is L6=270 mm.

[0170] According to tests, under high-speed energy consumption conditions of a constant speed of 90km / h, the drag coefficient of a traditional light truck with a flat-head cab is around 0.500. In comparison, the drag coefficient of a light truck with a cab according to the above embodiment of the present application is around 0.300, which can reduce energy consumption by about 20% compared to traditional light trucks.

[0171] Therefore, the chassis 100 and the light truck in the embodiment of the present application have the advantages of small cockpit space, high convenience of getting on and off the vehicle, low drag coefficient and low energy consumption, which are easier to promote and apply.

[0172] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cab, characterized in that: The cab comprises: A driving body, having a cockpit, the driving body comprising a front portion and side portions located on both sides of the front portion, the side portions being provided with wheel openings, the wheel openings being used to cooperate with the front wheels and being arranged concentrically with the front wheels; A steering mechanism, including a steering wheel, is disposed in the cockpit; Wherein, in the X direction, the maximum dimension L4 of the driving compartment satisfies the following range: 1550 mm ≤ L4 ≤ 1950 mm, the distance between the center point of the steering wheel and the center point of the wheel opening is L11, and the value range of L11 satisfies the following range: -65 mm ≤ L11 ≤ 335 mm; Among them, when the center point of the steering wheel is located on the side of the center point of the wheel mouth close to the front part, L11 takes a negative value, and when the center point of the steering wheel is located on the side of the center point of the wheel mouth away from the front part, L11 takes a positive value.

2. The cab according to claim 1, characterized in that: A distance L11 between the center point of the steering wheel and the center point of the wheel opening satisfies: -15mm≤L11≤285mm.

3. The cab according to claim 1, characterized in that: The maximum dimension L4 of the driving compartment satisfies the range of 1600mm≤L4≤1900mm.

4. The cab according to claim 1, characterized in that: The side portion is provided with a door, and in the X direction, the front edge and the rear edge of the door are respectively located at two sides of the wheel opening, and a wheel cover area is formed between the front edge of the door and the rear edge of the wheel opening, and a stepping area is formed between the rear edge of the door and the rear edge of the wheel opening; The orthographic projection of the steering wheel on the side portion is at least partially located in the wheel cover area and has a preset spacing from the rear edge of the vehicle door in the X direction.

5. The cab according to claim 4, characterized in that: The cab further comprises a driving seat, which is arranged in the cockpit, and an orthographic projection of the driving seat on the side is at least partially located in the stepping area.

6. The cab according to claim 4, characterized in that: In the X direction, the distance between the center point of the wheel opening and the rear edge of the door is L1, and the distance between the front edge of the door and the rear edge of the door is L2; Among them, the value range of L1 satisfies 630mm≤L1≤1030mm, and the value range of the ratio of L1 to L2 satisfies 0.65≤L1 / L2≤0.

95.

7. The cab according to claim 1, characterized in that: The steering mechanism also includes a steering shaft and a steering shaft bracket. The steering shaft is fixedly mounted on the driving compartment through the steering shaft bracket, and the steering wheel is transmission-connected to the steering shaft. The inclination angle of the steering shaft relative to the horizontal plane is α5, and the value range of α5 satisfies: 45°≤α5≤65°.

8. The cab according to any one of claims 2 to 7, characterized in that: The front portion includes a windshield portion, and the windshield portion is inclined relative to a vertical plane and has an inclination angle of α1, wherein the value range of α1 satisfies: 15°≤α1≤25°.

9. The cab according to claim 8, characterized in that: The front portion further comprises a first area and a second area arranged in the Z direction, wherein the second area is located on a side of the first area facing the windshield portion and is connected to the windshield portion; Along the Z direction, the second section is inclined relative to the vertical plane and the inclination angle is α2. The difference between the inclination angle α1 of the windshield section relative to the vertical plane and the inclination angle α2 of the second section relative to the vertical plane satisfies: 0°≤α1-α2≤5°.

10. The cab according to claim 9, characterized in that: The inclination angle of the first section relative to the vertical plane is smaller than the inclination angle of the second section relative to the vertical plane. The inclination angle of the first section relative to the vertical plane is α3, and the value range of α3 satisfies 0°≤α3≤10°.

11. The cab according to claim 9, characterized in that: The maximum dimension of the first section along the Z direction is L5, and the value range of L5 satisfies 320mm≤L5≤420mm.

12. The cab according to claim 8, characterized in that: The front part also includes a third zone, which is located on the side of the windshield part away from the wheel mouth along the Z direction and is connected to the windshield part. The third zone is inclined relative to the vertical plane and the inclination angle is α4, and the value range of α4 satisfies: 25°≤α4≤40°.

13. A chassis, characterized in that: include: A cab as claimed in any one of claims 1 to 12.

14. The chassis according to claim 13, characterized in that The chassis comprises: a vehicle frame, the cab being mounted on the vehicle frame, A front wheel, the center of which is arranged to coincide with the center of the wheel opening of the cab; Wherein, the steering mechanism also includes a steering rod and a steering gear, the steering gear is fixedly arranged on the frame and located below the cab, the two ends of the steering rod are respectively connected to the steering gear and the front wheel hub, and the length L13 of the steering rod along the X direction satisfies: 440mm≤L13≤540mm.

15. The chassis according to claim 14, characterized in that The steering mechanism also includes a steering rocker arm and a steering elbow arm. The first end of the steering tie rod is connected to the steering gear through the steering rocker arm, and the second end of the steering tie rod is connected to the front wheel hub through the steering elbow arm.

16. The chassis according to claim 14, characterized in that In the X direction, a length dimension L8 of the front overhang of the cab satisfies 640mm≤L8≤840mm, and the length dimension of the front overhang is: the distance between the front end of the cab and the center point of the wheel opening along the X direction.

17. The chassis according to claim 13, characterized in that A front bumper is provided at the front of the cab. Along the Z direction, the distance between the lowermost edge of the front bumper and the lower edge of the front wheel is L6, and the value range of L6 satisfies: 220mm≤L6≤320mm.

18. A light truck, characterized in that: It comprises a cab as claimed in any one of claims 1 to 12 or a chassis as claimed in any one of claims 13 to 17.

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