Cab

Abstract

The cab comprises a driving compartment body, the driving compartment body 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 the wheel openings are used for being matched with front wheels and are concentric with the front wheels. In the X direction, the ratio of the length size L8 of the front overhang to the maximum size L4 of the driving compartment meets the condition that L8 / L4 is larger than or equal to 0.38 and smaller than or equal to 0.48; wherein the length dimension of the front overhang is the distance from the foremost end of the front part to the central point of the wheel opening in the X direction. According to the cab in the embodiment of the invention, the layout of the cab can be reconstructed, and in a limited space, a design space is reserved for forming a streamline structure at the front part of the cab while the driving comfort and the getting-on and getting-off convenience are met, so that the design of the low-wind-resistance cab is conveniently realized.

Description

Technical Field

[0001] The present application belongs 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] Reducing the air resistance of the cab is gaining more and more attention because it can improve the product competitiveness of related vehicle products. However, due to the limitations of the existing cab shape, if the air resistance is to be reduced while meeting the requirements of driving comfort and convenience of getting on and off the vehicle, the space occupied by the cab must be increased, which will affect the product competitiveness of the cab. Summary of the invention

[0004] The present application provides a cab that reconstructs the cab layout. In a limited space, it can satisfy driving comfort and convenience of getting on and off the vehicle while reserving design space for forming a streamlined structure at the front of the cab, thereby facilitating the realization of a low wind resistance cab design.

[0005] In a first aspect, an embodiment of the present application provides a cab, including a driving compartment, the driving compartment including 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. In the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving compartment satisfies: 0.38≤L8 / L4≤0.48; wherein the length dimension of the front overhang is: the distance between the front end of the front portion and the center point of the wheel opening in the X direction.

[0006] According to any embodiment of the aforementioned first aspect of the present application, in the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving compartment satisfies: 0.40≤L8 / L4≤0.45.

[0007] According to any implementation of the aforementioned first aspect of the present application, the value range of the length dimension L8 of the front overhang satisfies: 640mm≤L8≤840mm.

[0008] According to any implementation of the aforementioned first aspect of the present application, the maximum dimension L4 of the driving compartment in the X direction satisfies the range of: 1550mm≤L4≤1950mm.

[0009] 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°.

[0010] According to any embodiment of the first aspect of the present application, the front portion 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 is 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°.

[0011] According to any implementation of the aforementioned 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 value range of the inclination angle α3 of the first zone relative to the vertical plane satisfies: 0°≤α3≤10°.

[0012] 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.

[0013] 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°.

[0014] According to any embodiment of the aforementioned first aspect of the present application, the cab also includes a brake pedal, which is connected to the front. When the brake pedal is in a non-braking state, along the X direction, the center point of the brake pedal is located on the side of the center point of the wheel mouth facing the front and the distance between the center point of the wheel mouth is L9, and the value range of L9 satisfies 10mm≤L9≤410mm.

[0015] A second aspect of the present application provides a chassis, comprising a cab, a frame and a front wheel according to the above embodiment, wherein 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.

[0016] According to any implementation of the aforementioned second aspect of the present application, the chassis further includes a rear wheel, which is disposed on the frame and spaced apart from the front wheel along the X direction. The ratio of the length dimension L8 of the front overhang to the wheelbase L14 satisfies 0.17≤L8 / L14≤0.25, and the wheelbase is the distance between the center point of the front wheel and the center point of the rear wheel along the X direction.

[0017] According to any implementation of the aforementioned second aspect of the present application, the value range of the wheelbase L14 satisfies 3360mm≤L14≤4000mm.

[0018] According to any embodiment of the aforementioned second aspect of the present application, the cab also includes a steering mechanism, which includes a steering wheel, a steering rod and a steering gear, the steering wheel is arranged in the cab, the steering gear is fixedly arranged on the frame and is located below the cab, and 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.

[0019] 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.

[0020] 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 lower 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.

[0021] 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.

[0022] This application has at least the following beneficial effects:

[0023] The cab provided in the embodiment of the present application incorporates the parameter of the front wheel position into the cab design and reconstructs the cab layout. Among them, by making 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 satisfy: 0.38≤L8 / L4≤0.48, compared with the existing light trucks, the front wheel position is moved forward relative to the cab body, and sufficient space can be formed on the side of the front wheel away from the front for the driver to get on and off the vehicle on the basis of a cab with limited cab length or limited layout space. In addition, since the driver's getting on and off position is located behind the front wheel, it is also possible to reserve design space for the front part of the cab to form a streamlined structure, so that the front part of the cab forms a streamlined structure, realizing a low wind resistance cab design, and thereby being able to reduce the wind resistance coefficient, reduce energy consumption, and improve the driving range of the cab while ensuring getting on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 is a side view of a chassis provided by some embodiments of the present application;

[0026] Figure 2 is a side view of a cab provided by some embodiments of the present application;

[0027] Figure 3 is a top view of a chassis provided in some embodiments of the present application;

[0028] Figure 4 is a side view of a cab provided in some other embodiments of the present application;

[0029] Figure 5 is a schematic diagram of the structure of a steering mechanism provided in some embodiments of the present application;

[0030] Figure 6 is a side view of a cab provided by some other embodiments of the present application;

[0031] Figure 7 is a side view of a cab with doors omitted provided by some embodiments of the present application;

[0032] Figure 8 is a side view of a cab provided by some other embodiments of the present application;

[0033] Fig. 9 is a side view of a cab provided by some other embodiments of the present application;

[0034] Fig.10 is a schematic diagram of the structure of a cab provided in some embodiments of the present application;

[0035] Fig.11 is a side view of a cab provided by some other embodiments of the present application;

[0036] Fig.12 is a schematic diagram of measuring the tilt angle provided in some embodiments of the present application;

[0037] Fig.13 is a simplified diagram of the inclination angle of the first zone provided in some embodiments of the present application;

[0038] Fig.14 is a side view of a cab provided by some other embodiments of the present application;

[0039] Fig.15 This is a top view of a cab provided in some embodiments of the present application.

[0040] The following are the descriptions of the reference numerals:

[0041] 100-chassis; 10-cab; 20-front wheel; 30-rear wheel;

[0042] 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;

[0043] S1-wheel arch area; S2-stepping area.

[0044] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0045] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, 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 the examples of the present application.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] See also Figure 1 , Figure 1 A side view of a chassis 100 provided in some embodiments of the present application is shown.

[0048] An embodiment of the present application provides a light truck, which includes a chassis 100 and a cargo box disposed on the chassis 100 .

[0049] 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.

[0050] 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.

[0051] Taking the chassis 100 with the cab 10 installed as an example, the chassis 100 can carry multiple functional systems such as the power system (engine and / or power battery, motor, etc.), transmission system, suspension system and braking system. The chassis 100 also has a frame, front wheels 20 and rear wheels 30. The cab 10 is installed on the frame, and the front wheels 20 and the rear wheels 30 are connected to the frame. 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.

[0052] It should be noted that the cab 10 in the embodiment of the present application can be used for the chassis 100 of the above-mentioned embodiments or related vehicle products (e.g., light trucks), and as a component of the chassis 100 or related vehicle products (e.g., light trucks). Of course, it can also be produced or sold separately as an independent component.

[0053] 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.

[0054] See also Figure 1 and Figure 2 , Figure 2 A side view of a cab 10 provided in some embodiments of the present application is shown.

[0055] The embodiment of the present application provides a cab 10, which includes a cab body 1, and the cab body 1 includes a front portion 11 and side portions 12 located on both sides of the front portion 11, and 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. In the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the cab body 1 satisfies: 0.38≤L8 / L4≤0.48. Among them, the length dimension of the front overhang is: the distance between the front end of the front portion 11 and the center point of the wheel opening 121 in the X direction.

[0056] In this article, the length dimension L8 of the front overhang can be the distance measured along the X direction between the projections of the front end of the front part 11 and the center point of the wheel mouth 121 on the Y0 plane, and the maximum dimension L4 of the driving body 1 can be the maximum dimension of the projection of the driving body on the Y0 plane measured along the X direction.

[0057] 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 .

[0058] A wheel opening 121 is provided on the side portion 12 of the driving compartment 1 close to the chassis 100 . The shape of the wheel opening 121 matches at least part of the front wheel profile. The wheel opening 121 is used to cooperate with the front wheel 20 and is arranged concentrically with the front wheel 20 .

[0059] In the existing human-machine design of the cab 10, attention is usually paid only to the driving comfort of the driver (or passenger) in a sitting state in the cab 10 (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 front wheel position 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 10 with limited cab 10 length or layout space.

[0060] Taking light trucks as an example, regulations require that the total length of this type of vehicle does not exceed 6000mm, 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.

[0061] To a certain extent, smaller wind resistance means a more inclined 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 backward as a whole. The overall backward movement of the driver's position will directly lead to an increase in the length of the cab 10, which is not conducive to improving cargo capacity and the competitiveness of the entire vehicle product.

[0062] Therefore, for a cab with limited cab length or limited layout space, the inventor needs to put in a lot of work to study how to perform human-machine settings in the cab 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, thereby improving the competitiveness of the entire vehicle product.

[0063] Based on this, the cab 10 in the embodiment of the present application, by incorporating the parameter of the position of the front wheel 20 into the design of the cab 10, redistributes the length dimension of the front overhang and the dimension of the driving body 1 along the X direction. More specifically, by making the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving body 1 in the X direction satisfy: 0.38≤L8 / L4≤0.48, compared with the existing light trucks, the position of the front wheel 20 can be moved forward relative to the driving body 1 on the basis of a cab with limited cab length or limited layout space, so that the driver's position is located on the side of the center point of the front wheel 20 away from the front part 11, and the driver can get on and off the vehicle from the side of the front wheel 20 away from the front part 11 along the X direction, so that a better solution of the cab human-machine layout that can meet the convenience of the driver getting on and off the vehicle can be obtained, which is particularly important for trucks, especially light trucks.

[0064] Furthermore, since the cab is located on the side of the center point of the front wheel 20 away from the front part 11, sufficient space can be left at the front part 11, so that the front part 11 of the cab 10 can reserve design space for forming a streamlined structure, realizing a low wind resistance cab 10 design, thereby being able to reduce the wind resistance coefficient, reduce energy consumption, and increase the cruising range of the cab 10 while ensuring getting on and off the vehicle. 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.

[0065] 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 man-machine space left for the cab 10 becomes smaller, resulting in poor convenience for getting on and off the vehicle.

[0066] Therefore, the cab in the embodiment of the present application can take into account driving comfort, convenience of getting on and off the vehicle, and low wind resistance performance by making the ratio of the length dimension L8 of the front overhang in the X direction to the maximum dimension L4 of the driving compartment 1 satisfy: 0.38≤L8 / L4≤0.48, thereby further increasing the cargo capacity of the truck and reducing energy consumption, thereby improving the competitiveness of the entire vehicle product.

[0067] 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 satisfies: 0.40≤L8 / L4≤0.45. For example, L8 / L4=0.40, L8 / L4=0.42 or L8 / L4=0.45.

[0068] In a specific embodiment, L8 / L4=0.42, and the ratio of the length dimension L8 of the front overhang of the cab 10 to the maximum dimension L4 of the driving body 1 is moderate, which can reserve sufficient design space for the convenience of the driver getting on and off the vehicle and designing a streamlined cab on the basis of limited cab length or limited layout space.

[0069] In some optional embodiments, in the X direction, the length dimension L8 of the front overhang satisfies the following range: 640 mm ≤ L8 ≤ 840 mm. Further optionally, in the X direction, the length dimension L8 of the front overhang satisfies the following range: 690 mm ≤ L8 ≤ 790 mm.

[0070] It can be understood that the smaller the length dimension L8 of the front overhang, the smaller the layout space in the front cabin for setting up functional systems, but the corresponding vehicle's passability will be 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 will be, 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 layout of the front cabin space.

[0071] Therefore, the length dimension L8 of the front overhang can be adjusted according to the layout space required for the front cabin and the space required for forming a low wind resistance streamline structure at the front.

[0072] In a specific embodiment, in the X direction, in a specific embodiment of the present application, L8=700mm, 720mm, 740mm or 760mm, for example, the length dimension of the front overhang L8=740mm, so as to take into account the requirements of the front cabin layout space, the low wind resistance streamline structure and the convenience of driving and getting on and off the vehicle, thereby improving the product competitiveness of the cab.

[0073] In some optional embodiments, the maximum dimension L4 of the driving compartment 1 in the X direction satisfies the following range: 1550 mm ≤ L4 ≤ 1950 mm.

[0074] It can be understood that the larger the maximum dimension L4 of the driving compartment 1, the more space there is for human and machine arrangements in the driving compartment, 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 and machine arrangements in the driving compartment.

[0075] Therefore, the length of the cab is directly related to the product competitiveness of the relevant vehicle products and the human-machine layout in the cab.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] It is understandable that, for a chassis with limited layout space, on the basis of adjusting the position of the front wheel 20 relative to the driving compartment 1 , the position of the front wheel 20 relative to the chassis 100 is also adjusted accordingly.

[0080] See also Figures 1 to 3 , Figure 3 A top view of a chassis 100 provided in some embodiments of the present application is shown.

[0081] In some optional embodiments, the chassis 100 further includes a rear wheel 30, which is disposed on the frame and spaced apart from the front wheel 20 along the X direction. The ratio of the length dimension L8 of the front overhang to the wheelbase L14 satisfies 0.17≤L8 / L14≤0.25, and the wheelbase L14 is the distance between the center point of the front wheel 20 and the center point of the rear wheel 30 along the X direction. The wheelbase L14 can be specifically the distance measured along the X direction by the projections of the center points of the front wheel 20 and the rear wheel 30 on the Y0 plane.

[0082] Under the condition that the size of the chassis 100 along the X direction is constant, by adjusting the position of the front wheel 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, that is, the wheelbase dimension L14 of the chassis 100 can be increased on the basis of shortening the length dimension L8 of the front overhang of the cab 10.

[0083] Among them, a power battery is arranged between the front wheel 20 and the rear wheel 30 of the chassis 100. Due to the limitation of the wheelbase L14 and the suspension form, the available space for the power battery is limited. Therefore, in the embodiment of the present application, by moving the front wheel 20 forward, the chassis 100 can also increase the wheelbase size L14 of the chassis 100 under the condition that the size of the chassis 100 along the X direction is constant, so as to increase the space available for the power battery, thereby increasing the power of the power battery that can be arranged in the chassis 100, making it easier to meet the large power demand and improve the product competitiveness.

[0084] In some optional embodiments, the value range of the wheelbase L14 satisfies 3360mm≤L14≤4000mm.

[0085] 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.

[0086] In a specific embodiment of the present application, L14=3450mm, 3750mm or 3950mm. When L14=3750mm, the power battery capacity can be expanded from 100kWh to 120kWh.

[0087] See also Figures 1 to 5 , Figure 4 FIG. 1 shows a side view of a cab 10 provided in some other embodiments of the present application. Figure 5 A schematic structural diagram of a steering mechanism 5 provided in some embodiments of the present application is shown.

[0088] On the basis of adjusting the position of the front wheels 20 to shorten the length dimension L8 of the front overhang of the cab 10, in addition to the wheelbase L14, other structures at the chassis 100 also need to be adaptively arranged.

[0089] In some optional embodiments, the cab 10 also includes a steering mechanism 5, which includes a steering wheel 51, a steering rod 54 and a steering gear 55. The steering wheel 51 is arranged in the cab 10, and 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. The length L13 of the steering rod 54 along the X direction satisfies: 440mm≤L13≤540mm.

[0090] 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 .

[0091] Compared with the existing light truck, on the basis of the center point of the front wheel 20 being moved forward in the X direction, since the end of the steering tie rod 54 is connected to the wheel hub of the front wheel 20, the length L13 of the steering tie rod 54 in the X direction can be reduced, so that the length L13 of the steering tie rod 54 in the X direction satisfies: 440mm≤L13≤540mm, so as to shorten the cockpit space. In one embodiment, the length L13 of the steering tie rod 54 in the X direction is 470mm, 490mm or 510mm.

[0092] In some optional embodiments, 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.

[0093] 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.

[0094] 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.

[0095] It is understandable that, based on adjusting the position of the front wheels 20, the ergonomic design in the cab 10 also needs to be adjusted accordingly to improve the driving comfort and the convenience of getting on and off the vehicle for the driver.

[0096] Based on this, the cab 10 in the embodiment of the present application incorporates the parameter of the front wheel position into the evaluation system of the convenience of getting on and off the vehicle. More specifically, the steering wheel, door, brake pedal, driver's seat, etc. are positioned and designed according to the position of the wheel center of the front wheel 20. This can obtain a better solution for the human-machine layout of the cab that can meet the convenience of the driver getting on and off the vehicle. This is particularly important for trucks, especially light trucks.

[0097] See also Figures 1 to 5 In some optional embodiments, in the X direction, the distance between the center point of the steering wheel 51 and the center of the front wheel 20 is L11, and the value range of L11 satisfies: -65mm≤L11≤335mm. Wherein, L11 can be the size of the projection of the center point of the steering wheel 51 on the Y0 plane and the projection of the center point of the wheel opening 121 on the Y0 plane measured along the X direction.

[0098] When the center point of the steering wheel 51 is located on the side of the center of the front wheel 20 close to the front portion 11 , L11 takes a negative value; when the center point of the steering wheel 51 is located on the side of the center of the front wheel 20 far from the front portion 11 , L11 takes a positive value.

[0099] Here, L11 may be a dimension of a projection of the center point of the steering wheel 51 on the Y0 plane and a projection of the center point of the front wheel 20 on the Y0 plane measured along the X direction.

[0100] The steering mechanism 5 also includes a steering shaft 52 and a steering shaft bracket 53 . In the cab 10 , the steering wheel 51 is often in transmission connection with the steering shaft 52 , and the steering shaft 52 is fixedly mounted on the front portion 11 of the cab body 1 via the steering shaft bracket 53 .

[0101] Since the driver's position can be 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 and designing the steering wheel 51 based on the position of the center of the front wheel 20, a better solution for the human-machine layout of the cab can be obtained that can meet the convenience of the driver getting on and off the vehicle.

[0102] When the steering mechanism 5 is positioned and designed based on the center of the front wheel 20, by making the distance L11 between the center point of the steering wheel 51 and the center of the front wheel 20 ≥ -65mm, the driver's sitting position can be moved backward when the maximum size of the driving compartment 1 is constant (especially for a cab with a smaller length), and the driver gets on and off the vehicle from the rear side of the front wheel 20, which can leave enough space at the front part 11, so that the front part 11 of the cab 10 can reserve design space for forming a streamlined structure, and realize the design of a low wind resistance cab 10. 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 driver's position can be prevented from moving too far backward, so that the cockpit space can be reduced, so that 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.

[0103] In some optional embodiments, the distance L11 between the center point of the steering wheel 51 and the center of the front wheel 20 satisfies: -15mm≤L11≤285mm. Further optionally, the distance L11 between the center point of the steering wheel 51 and the center of the front wheel 20 satisfies: 35mm≤L11≤235mm. Further optionally, the distance L11 between the center point of the steering wheel 51 and the center of the front wheel 20 satisfies: 85mm≤L11≤185mm.

[0104] In a specific embodiment of the present application, L11=105mm, 135mm or 155mm. In this case, the cab man-machine and the front wheel can be arranged compactly, so that the front portion 11 can leave an appropriate space for forming a streamlined structure to realize the design of the 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.

[0105] See also Figures 1 to 7 , Figure 6 FIG. 1 shows a side view of a cab 10 provided in some other embodiments of the present application. Figure 7 A side view of a cab 10 provided in some embodiments of the present application with the door 2 omitted is shown.

[0106] In some optional embodiments, a vehicle door 2 is provided on the side portion 12, and in the X direction, the front edge and the rear edge of the vehicle 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 vehicle door 2 and the rear edge of the wheel opening 121, and a step area S2 is formed between the rear edge of the vehicle door 2 and the rear edge of the wheel opening 121.

[0107] 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.

[0108] Typically, the front edge of the door 2 corresponds to the front edge of the door opening 122 of the door 2, and the pivot point of the door 2 is typically disposed at the front edge of the door 2 so that the door opening 122 of the door 2 can be fully opened and utilized to improve the convenience of the driver getting on and off the vehicle.

[0109] Since the driver's position can also be determined by the door 2, 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 door 2 based on the position of the center of the front wheel 20, a better solution for the human-machine layout of the cab can be obtained that can meet the convenience of the driver getting on and off the vehicle.

[0110] When the door 2 is positioned and designed based on the center of the front wheel 20, the front edge and the rear edge of the door 2 can be located on both sides of the center of the front wheel 20, respectively, and 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 positive 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 position can be made to 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.

[0111] In some optional embodiments, in the X direction, the distance between the rear edge of the door 2 and the center of the front wheel 20 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 630 mm ≤ L1 ≤ 1030 mm, and the value range of the ratio of L1 to L2 satisfies 0.65 ≤ L1 / L2 ≤ 0.95.

[0112] Among them, 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 on the Y0 plane and the projection of the rear edge of the door 2 on the Y0 plane measured along the X direction; similarly, the distance L1 between the rear edge of the door 2 and the center of the front wheel 20 can be the distance between the projections of the rear edge of the door 2 and the center of the front wheel 20 on the Y0 plane respectively measured along the X direction.

[0113] It can be understood that the greater the distance between the rear edge of the door 2 and the center of the front wheel 20, 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 of the front wheel 20, the smaller the length of the cab 10 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.

[0114] By making the distance L1 between the rear edge of the door 2 and the center of the front wheel 20 ≥ 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 of the front wheel 20 ≤ 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.

[0115] Furthermore, by making the ratio a of the distance L1 between the rear edge of the door 2 and the center of the front wheel 20 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.

[0116] 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 more forward than the center of the front wheel 20, 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 more forward 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 more backward than the center of the front wheel 20. 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.

[0117] 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.

[0118] In some optional embodiments, the range of values ​​of the distance L1 between the rear edge of the vehicle door 2 and the center of the front wheel 20 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 of the front wheel 20 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 of the front wheel 20 satisfies 780mm≤L1≤880mm.

[0119] 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 of the front wheel 20 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.

[0120] 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 edge and the rear edge of the door and the center of the front wheel 20 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.

[0121] See also Figures 1 to 8 , Figure 8 A side view of a cab 10 provided in accordance with some further embodiments of the present application is shown.

[0122] In some optional embodiments, the cab 10 also includes a brake pedal 3, which is arranged in the cab and connected to the front part 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 mouth 121 facing the front part 11 and the distance from the center point of the wheel mouth 121 is L9, and the value range of L9 satisfies: 10mm≤L9≤410mm.

[0123] The distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121 may be the distance between the projections of the center point of the brake pedal 3 and the wheel opening 121 on the Y0 plane respectively measured along the X direction.

[0124] Since the driver's position can also be determined by the brake pedal 3, 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 brake pedal 3 based on the position of the center of the front wheel 20, a better solution for the human-machine layout of the cab can be obtained that can meet the convenience of the driver getting on and off the vehicle.

[0125] When the brake pedal 3 is positioned and designed with the center of the front wheel 20, it can be understood that the larger the distance L9 between the center point of the brake pedal 3 and the center of the front wheel 20, the closer the driver's seat position is to the front wheel. At this time, the size of the step area S2 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 of the front wheel 20, the farther the driver's seat position will be from the front wheel 20, and the size of the step area S2 for the driver to get on and off the vehicle will be increased, 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.

[0126] Specifically, when the brake pedal 3 is in the non-braking state, the center point of the brake pedal 3 is located on the side of the center of the front wheel 20 toward the front portion 11 and the distance between the center point of the brake pedal 3 and the center of the front wheel 20 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 distance L9 between the center point of the brake pedal 3 and the center of the front wheel 20 ≥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.

[0127] In some optional embodiments, when the brake pedal 3 is in a non-braking state, the distance L9 between the center of the front wheel 20 and the center point of the brake pedal 3 satisfies a range of 60mm≤L9≤360mm. Further optionally, the distance L9 between the center of the front wheel 20 and the center point of the brake pedal 3 satisfies a range of 110mm≤L9≤310mm. The distance L9 between the center of the front wheel 20 and the center point of the brake pedal 3 satisfies a range of 110mm≤L9≤310mm.

[0128] 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 cab space.

[0129] See also Figures 1 to 9 , Fig. 9 The side view of the cab 10 provided by some other embodiments of the present application is shown. In some optional embodiments, the cab 10 further includes a driving seat 4, which is arranged 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.

[0130] Wherein, along the X direction, the center point of the driver's seat 4 is located on the side of the center of the front wheel 20 away from the front portion 11 and the distance between the center point of the driver's seat 4 and the center of the front wheel 20 is L10, and the distance between the center point of the driver's seat 4 and the center of the front wheel 20 is L10, and the value range of L10 satisfies 365mm≤L10≤765mm. Wherein, the distance L10 between the center point of the driver's seat 4 and the center of the front wheel 20 can be the distance between the projection point of the center point of the driver's seat 4 on the Y0 plane and the projection point of the center of the front wheel 20 on the Y0 plane measured along the X direction.

[0131] Since the driver's position can also be determined by the driving seat 4, 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 driving seat 4 based on the position of the center of the front wheel 20, a better solution for the human-machine layout of the cab can be obtained that can meet the convenience of the driver getting on and off the vehicle.

[0132] When the driving seat 4 is positioned and designed with the center of the front wheel 20, it can be understood that the smaller the distance L10 between the center point of the driving seat 4 and the center of the front wheel 20, the closer the driver's seat position is to the front wheel 20. At this time, the size of the step area S2 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 larger the distance L10 between the center point of the driving seat 4 and the center of the front wheel 20, the farther the driver's seat position will be from the front wheel 20, and the size of the step area S2 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.

[0133] Specifically, the center point of the driver's seat 4 is located on the side of the center of the front wheel 20 away from the front part 11 and the distance L10 between the center point of the driver's seat 4 and the center of the front wheel 20 is ≥365 mm, so that the driving position can be moved backward to form a streamlined structure at the front part 11, and the size of the step area S2 along the X direction is increased 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 of the front wheel 20 ≤765 mm, the driving position can be prevented from being moved too far backward, 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.

[0134] 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 of the front wheel 20 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 of the front wheel 20 satisfies 515mm≤L10≤615mm.

[0135] 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.

[0136] See also Figures 1 to 12 , Fig.10The 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.

[0137] In order to further understand the technical solution of the present application, the streamlined structure formed by the front portion 11 of the cab 10 referred to above will be described below in conjunction with a specific embodiment.

[0138] 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°.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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 overall product competitiveness of the cab 10.

[0143] 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°.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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°.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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 characterized 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 highest end of the middle position of the front bumper along the Y direction. By making the maximum size L5 of the first section 112 along the Z direction ≥ 320 mm, the aesthetics of the shape 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 size 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 wind resistance coefficient.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] See also Figures 1 to 14 , Fig.14 A side view of a cab 10 provided in accordance with some further embodiments of the present application is shown.

[0161] 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°.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] See also Figures 1 to 15 , Fig.15 A top view of a cab 10 provided in some further embodiments of the present application is shown.

[0167] In some optional embodiments, in the Y direction, the maximum dimension of the driving compartment 1 is L7, and the value range of L7 satisfies: 2120mm≤L7≤2220mm.

[0168] 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.

[0169] 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.

[0170] In summary, the structures of the cab 10 and the chassis 100 in the embodiment of the present application are described below by taking a specific embodiment as an example.

[0171] The chassis 100 provided in the embodiment of the present application includes a cab 10, a frame, front wheels 20 and rear wheels 30. The cab 10 may include a driving body 1 and a door 2. The driving 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. The wheel openings 121 are used to cooperate with the front wheels 20 and are arranged concentrically with the front wheels 20.

[0172] In the X direction, the maximum dimension of the driving compartment 1 is L4=1750 mm, the length dimension of the front overhang is L8=700 mm, 720 mm, 740 mm or 760 mm, and the wheelbase of the front wheel 20 and the rear wheel 30 along the X direction is L14=3750 mm.

[0173] 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.

[0174] 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°.

[0175] Furthermore, the maximum 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.

[0176] 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.

[0177] Therefore, the cab 10, chassis 100 and 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.

[0178] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A cab, characterized in that: include: A driving body, 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; In the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving compartment satisfies: 0.38≤L8 / L4≤0.48; wherein the length dimension of the front overhang is: the distance between the front end of the front part and the center point of the wheel opening in the X direction.

2. The cab according to claim 1, characterized in that: In the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the driving compartment satisfies: 0.40≤L8 / L4≤0.

45.

3. The cab according to claim 1, characterized in that: The length dimension L8 of the front overhang satisfies the range of 640 mm ≤ L8 ≤ 840 mm.

4. The cab according to claim 1, characterized in that: The maximum dimension L4 of the driving compartment in the X direction satisfies the following range: 1550 mm ≤ L4 ≤ 1950 mm.

5. The cab according to any one of claims 2 to 4, 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°.

6. The cab according to claim 5, characterized in that: The front portion includes 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°.

7. The cab according to claim 6, 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, and the value range of the inclination angle α3 of the first section relative to the vertical plane satisfies: 0°≤α3≤10°.

8. The cab according to claim 6, 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.

9. The cab according to claim 5, 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°.

10. The cab according to claim 1, characterized in that: The cab also includes a brake pedal, which is connected to the front part. When the brake pedal is in a non-braking state, along the X direction, the center point of the brake pedal is located on the side of the center point of the wheel mouth facing the front part and the distance between the center point of the wheel mouth is L9, and the value range of L9 satisfies 10mm≤L9≤410mm.

11. A chassis, characterized in that: include: A cab as claimed in any one of claims 1 to 10; a vehicle frame, the cab being mounted on the vehicle frame; The center of the front wheel is arranged to coincide with the center of the wheel opening of the cab.

12. The chassis according to claim 11, characterized in that The chassis further includes a rear wheel, which is arranged on the frame and spaced apart from the front wheel along the X direction; The ratio of the length dimension L8 of the front overhang to the wheelbase L14 satisfies 0.17≤L8 / L14≤0.25, and the wheelbase is the distance between the center point of the front wheel and the center point of the rear wheel along the X direction.

13. The chassis according to claim 12, characterized in that The value range of the wheelbase L14 satisfies 3360mm≤L14≤4000mm.

14. The chassis according to claim 12, characterized in that The cab also includes a steering mechanism, which includes a steering wheel, a steering rod and a steering gear. The steering gear is fixedly arranged on the frame and located below the cab. Both ends of the steering rod are respectively connected to the steering gear and the front wheel hub. 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 11, characterized in that A front bumper is provided at the front of the cab. Along the Z direction, the distance between the lower 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.

17. A light truck, characterized in that: It comprises a cab as claimed in any one of claims 1 to 10 or a chassis as claimed in any one of claims 11 to 16.

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