Cab, chassis and light truck

Abstract

The utility model discloses a cab, a chassis and a light truck, 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 application belongs to the technical field of driving, and particularly relates to a cab, a chassis and a light truck. BACKGROUND

[0002] The cab is the main workplace of the driver and is also the main component of the whole vehicle product related to the cab, so the design of the cab is related to the driving comfort of the driver and the product competitiveness of the whole vehicle product related to the cab.

[0003] Reducing the air resistance of the cab is also paid more and more attention to as it can improve the product competitiveness of the whole vehicle product related to the cab. However, due to the limitation of the existing cab shape, if the air resistance is to be reduced on the basis of meeting the driving comfort and the convenience of getting on and off the vehicle, the space occupied by the cab must be increased, which affects the product competitiveness of the cab. CONTENT OF THE INVENTION

[0004] The application provides a cab, a chassis and a light truck, which reconstructs the layout of the cab, and in the limited space, the cab is designed to form a streamlined structure in the front part of the cab to reserve design space, so as to facilitate the design of a low wind resistance cab while meeting the driving comfort and the convenience of getting on and off the vehicle.

[0005] In a first aspect, the application provides a cab, comprising a cab body, the cab body comprising a front part and side parts located on both sides of the front part, the side parts being provided with wheel openings, the wheel openings being used to cooperate with front wheels and being concentrically arranged with the front wheels. In the X direction, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body satisfies: 0.38≤L8 / L4≤0.48; wherein the length dimension of the front suspension is the distance between the frontmost end of the front part and the center point of the wheel opening in the X direction.

[0006] According to any one of the preceding embodiments of the first aspect of the application, in the X direction, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body satisfies: 0.40≤L8 / L4≤0.45.

[0007] According to any one of the preceding embodiments of the first aspect of the application, the length dimension L8 of the front suspension satisfies: 640mm≤L8≤840mm.

[0008] According to any one of the preceding embodiments of the first aspect of the application, the maximum dimension L4 of the cab body in the X direction satisfies: 1550mm≤L4≤1950mm.

[0009] According to any one of the preceding embodiments of the first aspect of the application, the front part comprises a windshield part, the windshield part being arranged obliquely to the vertical plane and the oblique angle being α1, wherein the value range of α1 satisfies: 15°≤α1≤25°.

[0010] According to any one of the implementation manners of the first aspect of the application, the front part comprises a first section and a second section arranged in the Z direction, and the second section is located on one side of the first section facing the windshield part and connected with the windshield part. In the Z direction, the second section is arranged at an angle a2 with respect to the vertical plane, and the difference between the angle a1 of the windshield part with respect to the vertical plane and the angle a2 of the second section with respect to the vertical plane satisfies: 0°≤a1-a2≤5°.

[0011] According to any one of the implementation manners of the first aspect of the application, the angle a3 of the first section with respect to the vertical plane is less than the angle of the second section with respect to the vertical plane, and the value of the angle a3 of the first section with respect to the vertical plane satisfies: 0°≤a3≤10°.

[0012] According to any one of the implementation manners of the first aspect of the application, the maximum dimension of the first section in the Z direction is L5, and the value of L5 satisfies: 320mm≤L5≤420mm.

[0013] According to any one of the implementation manners of the first aspect of the application, the front part further comprises a third section, and in the Z direction, the third section is located on one side of the windshield part away from the wheel opening and connected with the windshield part, and the third section is arranged at an angle a4 with respect to the vertical plane, and the value of a4 satisfies: 25°≤a4≤40°.

[0014] According to any one of the implementation manners of the first aspect of the application, the cab further comprises a brake pedal connected to the front part, and in the non-braking state of the brake pedal, in the X direction, the center point of the brake pedal is located on one side of the center point of the wheel opening facing the front part, and the distance between the center point of the brake pedal and the center point of the wheel opening is L9, and the value of L9 satisfies: 10mm≤L9≤410mm.

[0015] The second aspect of the application provides a chassis comprising the cab, the frame and the front wheel of the above-mentioned embodiments, the cab is mounted on the frame, and the center of the front wheel is arranged coincidentally with the center of the wheel opening of the cab.

[0016] According to any one of the implementation manners of the second aspect of the application, the chassis further comprises a rear wheel arranged on the frame and spaced apart from the front wheel in the X direction. The ratio of the length L8 of the front suspension 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 in the X direction.

[0017] According to any one of the implementation manners of the second aspect of the application, the value of the wheelbase L14 satisfies: 3360mm≤L14≤4000mm.

[0018] According to any one of the implementation manners of the preceding second aspect of the present application, the cab further comprises a steering mechanism, the steering mechanism comprising a steering wheel, a steering pull rod and a steering gear, the steering wheel being arranged in the cab, the steering gear being fixedly arranged on the frame and located below the cab, and two ends of the steering pull rod being drivingly connected to the steering gear and the front wheel hub respectively, and the length L13 of the steering pull rod along the X direction satisfying 440mm≤L13≤540mm.

[0019] According to any one of the implementation manners of the preceding second aspect of the present application, the steering mechanism further comprises a steering rocker arm and a steering bent arm, the first end of the steering pull rod being drivingly connected to the steering gear through the steering rocker arm, and the second end of the steering pull rod being connected to the front wheel hub through the steering bent arm.

[0020] According to any one of the implementation manners of the preceding second aspect of the present application, the front part of the cab is provided with a front bumper, and the distance between the lower edge of the front bumper and the lower edge of the front wheel along the Z direction is L6, and the value range of L6 satisfies 220mm≤L6≤320mm.

[0021] The third aspect of the present application provides a light truck comprising the cab of the first aspect or the chassis of the second aspect.

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

[0023] The cab provided by the present application takes the parameter of the front wheel position into the design of the cab and reconstructs the layout of the cab. Specifically, by making the ratio of the length L8 of the front suspension to the maximum size L4 of the cab body 1 in the X direction satisfy 0.38≤L8 / L4≤0.48, compared with the existing light truck, the front wheel position is set to be relatively forward to the cab body, which can form sufficient space on the side away from the front part of the front wheel for the driver to get on and off the vehicle based on the limited length of the cab or the cab with limited arrangement space. Moreover, since the getting-on and getting-off position of the driver is located behind the front wheel, design space can also be reserved for forming a streamlined structure in the front part of the cab, so that the front part of the cab forms a streamlined structure, realizes low-drag cab design, and thus the wind resistance coefficient can be reduced, the energy consumption can be reduced, and the cruising range of the cab can be improved while ensuring getting on and off. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced as follows, and other drawings can also be obtained by those of ordinary skill in the art without creative labor based on these drawings.

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

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

[0029] Figure 5 is a structural schematic view of a steering mechanism provided by some embodiments of the present application;

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

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

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

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

[0034] Figure 10 is a structural schematic view of a cab provided by some embodiments of the present application;

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

[0036] Figure 12 is a measurement schematic view of a tilt angle provided by some embodiments of the present application;

[0037] Figure 13 is a diagram of a tilt angle of a first section provided by some embodiments of the present application;

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

[0039] Figure 15 is a top view of a cab provided by some embodiments of the present application.

[0040] Reference signs are explained as follows:

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

[0042] 1 - driver's compartment; 11 - front part; 111 - windshield part; 112 - first section; 113 - second section; 114 - third section; 12 - side part; 121 - wheel opening; 122 - door opening; 2 - vehicle door; 3 - brake pedal; 4 - driver's seat; 5 - steering mechanism; 51 - steering wheel; 52 - steering shaft; 53 - steering shaft support; 54 - steering tie rod; 55 - steering gear; 56 - steering arm;

[0043] S1 - wheelhouse section; S2 - step section.

[0044] In the drawings, identical parts are designated by identical reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0045] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to explain the present application, and is not intended to limit the present application. The present application can be implemented without some of the specific details, which are not required by those skilled in the art. The following description of the embodiments is merely provided to give a better understanding of the present application by showing examples of the present application.

[0046] It should be noted that, in the present document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0047] Reference will now be made to Figure 1 , Figure 1 A side view of a chassis 100 is shown according to some embodiments of the present application.

[0048] A light truck is provided according to embodiments of the present application, which includes a chassis 100 and a cargo box arranged on the chassis 100.

[0049] The light truck refers to a cargo vehicle provided with a cargo box, and according to relevant standards, specifically refers to a cargo vehicle with a total length less than 6000 mm in the X direction and a total mass less than 4500 kg.

[0050] The chassis 100 includes the chassis 100 with the cab 10 and the chassis 100 without the cab 10, that is, the light truck can include the chassis 100 with the cab 10 and the cargo box, or the chassis 100 without the cab 10, the cargo box and the cab 10.

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

[0052] It should be noted that the cab 10 in the embodiments of the present application can be used in the chassis 100 or the related whole vehicle product (for example, the light truck) of each of the above embodiments and serve as a component part of the chassis 100 or the related whole vehicle product (for example, the light truck), and of course, can also be produced or sold as an independent component.

[0053] In this paper, the direction definition refers to the whole 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-rear direction of the cab; the Y direction is parallel to the ground and points to the left side 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 left-right center symmetry plane of the cab, the Z0 plane is the plane perpendicular to the Y0 plane and parallel to the ground, and the X0 plane is the plane perpendicular to the Y0 plane and the Z0 plane.

[0054] Please refer to Figure 1 and Figure 2 , Figure 2 The side view of the cab 10 provided by some embodiments of the present application is shown.

[0055] The cab 10 provided by the embodiments of the present application includes a driver compartment 1, the driver compartment 1 includes a front part 11 and side parts 12 located on both sides of the front part 11, the side parts 12 are provided with wheel openings 121, the wheel openings 121 are used to cooperate with the front wheel 20 and are concentrically arranged with the front wheel 20. In the X direction, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the driver compartment 1 satisfies: 0.38≤L8 / L4≤0.48. Wherein, the length dimension of the front suspension is: the distance between the most front end of the front part 11 and the center point of the wheel opening 121 in the X direction.

[0056] In the present disclosure, the length dimension L8 of the front overhang can be the distance measured along the X direction between the projection of the frontmost end of the front portion 11 and the center point of the wheel opening 121 on the Y0 plane, and the maximum dimension L4 of the cab body 1 can be the maximum dimension measured along the X direction of the projection of the cab body on the Y0 plane.

[0057] The cab body 1 refers to the external structure for forming the cab 10, and the cab body 1 includes the front portion 11 and the side portion 12, which refers to the portion on the left and right sides of the cab 10.

[0058] The wheel opening 121 is arranged on the side portion 12 of the cab body 1 close to the chassis 100, and the shape of the wheel opening 121 is adapted to at least part of the contour of the front wheel, and the wheel opening 121 is arranged in cooperation with and concentrically with the front wheel 20.

[0059] In the existing cab 10 design, only the driving comfort of the driver (or passenger) in the cab 10 in a sitting position (such as the man-machine operation function, the driver's field of view, etc.) and the influence of the door opening on the convenience of the driver (or passenger) getting in and out of the vehicle are usually concerned, and the position of the front wheel is rarely considered as a parameter for evaluating the convenience of the driver (or passenger) getting in and out of the vehicle, which is particularly important for the cab 10 with limited cab 10 length or layout space.

[0060] Taking a light truck as an example, the regulations require that the overall length of such vehicles should not exceed 6000mm, which means that the shorter the length of the cab 10, the longer the length of the cargo box, and the length of the cargo box directly affects the carrying capacity and product competitiveness of the truck.

[0061] To some extent, the smaller the wind resistance, the more inclined the windshield of the cab 10 is, and therefore, in order to ensure that the driver will not collide with the excessively inclined windshield and affect the driving comfort, the driver's position needs to be moved backward as a whole, and 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 the carrying capacity and product competitiveness of the whole vehicle.

[0062] Therefore, for the cab with limited length or limited layout space, the inventor needs to make a lot of efforts to study how to arrange the cab man-machine to balance the driving comfort, the convenience of getting in and out of the vehicle, and the low wind resistance performance, so as to further improve the carrying capacity of the truck and reduce the energy consumption, and improve the product competitiveness of the whole vehicle.

[0063] Based on this, the cab 10 in the embodiment of the present application re-distributes the length dimension of the front suspension and the size of the cab body 1 in the X direction by taking the parameter of the front wheel 20 position into the design of the cab 10. More specifically, by making the ratio of the length dimension L8 of the front suspension to the maximum size L4 of the cab body 1 in the X direction satisfy: 0.38≤L8 / L4≤0.48, compared with the existing light truck, the front wheel 20 position can be set to move forward relative to the cab body 1 based on the cab of limited length or limited arrangement space, so that the driver 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 in the X direction, that is, a better solution of the cab man-machine arrangement that can meet the convenience of getting on and off the vehicle is obtained, which is particularly important for trucks, especially light trucks.

[0064] And since the cab position is located on the side of the center point of the front wheel 20 away from the front part 11, enough 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 low-drag cab 10 design, and thereby being able to reduce the wind resistance coefficient while ensuring getting on and off the vehicle, reducing energy consumption and improving the cruising range of the cab 10. 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 can be understood that when the ratio of the length dimension L8 of the front suspension to the maximum size L4 of the cab body 1 is less than 0.38, it may affect the streamlined structure formed at the front part of the cab 10. And when the ratio of the length dimension L8 of the front suspension to the maximum size L4 of the cab body 1 is greater than 0.48, it will result in smaller man-machine space for the cab 10, leading to poor convenience of getting on and off the vehicle.

[0066] Therefore, by making the ratio of the length dimension L8 of the front suspension to the maximum size L4 of the cab body 1 in the X direction satisfy: 0.38≤L8 / L4≤0.48, 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-drag performance, thereby further improving the carrying capacity of the truck and reducing energy consumption, and improving the competitiveness of the whole vehicle product.

[0067] Further optionally, in the X direction, the ratio of the length dimension L8 of the front suspension to the maximum size L4 of the cab body satisfies: 0.40≤L8 / L4≤0.45. For example, L8 / L4=0.40, L8 / L4=0.42 or L8 / L4=0.45.

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

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

[0070] It can be understood that the smaller the length dimension L8 of the front overhang, the smaller the arrangement space of the front compartment for setting functional systems, but the better the passability of the corresponding vehicle, the larger the man-machine space left for the cab, and the more conducive to improving the driving comfort and the convenience of getting on and off; on the contrary, the larger the front overhang dimension, the worse the passability of the corresponding vehicle, and the smaller the man-machine space left for the cab, which is not conducive to the driver getting on and off, but is conducive to the arrangement space of the front compartment.

[0071] Therefore, the length dimension L8 of the front overhang can be adjusted according to the required arrangement space of the front compartment and the space required for forming a low-drag streamlined structure in the front part.

[0072] In one specific embodiment, in the X direction, in one specific embodiment of the present application, L8=700mm, 720mm, 740mm or 760mm, for example, the length dimension L8 of the front overhang is 740mm, in order to take into account the needs of the arrangement space of the front compartment, the low-drag streamlined structure and the convenience of getting on and off the cab, and improve the product competitiveness of the cab.

[0073] In some alternative embodiments, the maximum dimension L4 of the cab body 1 in the X direction satisfies the range: 1550mm≤L4≤1950mm.

[0074] It can be understood that the larger the maximum dimension L4 of the cab body 1, the more sufficient the space for man-machine arrangement in the cab, but it will result in the reduction of the size of the cargo box, and on the contrary, the smaller the maximum dimension L4 of the cab body 1, the larger the size reserved for the cargo box, but the man-machine arrangement space in the cab is more limited.

[0075] Therefore, the cab length is directly related to the product competitiveness of the related whole vehicle product and the man-machine arrangement in the cab.

[0076] In the present application, by making the maximum dimension L4 of the driver cabin body 1 along the X direction ≥ 1550 mm, the driving requirements of the light truck can be better met, and by making the maximum dimension L4 of the driver cabin body 1 ≤ 1950 mm, the space occupied by the cab 10 can be reduced under the condition that the size of the light truck is constant, and the cargo box space is increased to better meet the cargo carrying requirements of the light truck.

[0077] In some optional embodiments, the maximum dimension L4 of the driver cabin body 1 satisfies 1600 mm ≤ L4 ≤ 1900 mm. Further optionally, the maximum dimension L4 of the driver cabin body 1 satisfies 1650 mm ≤ L4 ≤ 1850 mm. Further optionally, the maximum dimension L4 of the driver cabin body 1 satisfies 1700 mm ≤ L4 ≤ 1800 mm.

[0078] In one specific embodiment of the present application, L4 = 1750 mm, which can make the space of the cab 10 moderate, taking into account the driving requirements and the cargo carrying requirements, and improving the performance of the light truck.

[0079] It can be understood that for the chassis with limited arrangement space, on the basis of adjusting the position of the front wheel 20 relative to the driver cabin body 1, the position of the front wheel 20 relative to the position of the chassis 100 is also adjusted accordingly.

[0080] Please refer to Figures 1 to 3 , Figure 3 The top view of the chassis 100 provided by some embodiments of the present application is shown.

[0081] In some optional embodiments, the chassis 100 further comprises a rear wheel 30, which is arranged on the frame and is arranged spaced apart from the front wheel 20 along the X direction. The ratio of the length dimension L8 of the front suspension 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 between the projections of the center point of the front wheel 20 and the center point of 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 suspension of the cab 10 and the wheelbase dimension L14 of the chassis 100 can be redistributed, that is, on the basis of the length dimension L8 of the front suspension of the cab 10 being shortened, the wheelbase dimension L14 of the chassis 100 can be increased.

[0083] The power battery is arranged between the front wheel 20 and the rear wheel 30 of the chassis 100, and the available space of the power battery is limited by the wheelbase L14 and the suspension form. Therefore, in the embodiment of the present application, the chassis 100 is moved forward, and the wheelbase L14 of the chassis 100 is increased under the condition that the size of the chassis 100 along the X direction is constant, so as to increase the arrangement space of the power battery, thereby increasing the power of the power battery that can be arranged in the chassis 100, and facilitating to meet the demand of large power and improve the product competitiveness.

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

[0085] The specific value of the wheelbase L14 is related to the length L8 of the front suspension and the total length of the chassis along the X direction. By making the wheelbase L14≥3360mm, the arrangement space of the power battery can be increased to better meet the demand of large power. By making the wheelbase L14≤4000mm, space can be reserved for the arrangement 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 one specific embodiment of the present application, L14=3450mm, 3750mm or 3950mm, and when L14=3750mm, the power of the power battery can be expanded from 100kWh to 120kWh.

[0087] Please refer to Figures 1 to 5 , Figure 4 FIG. 2 shows a side view of the cab 10 provided by some embodiments of the present application, Figure 5 FIG. 5 shows a structural schematic view of the steering mechanism 5 provided by some embodiments of the present application.

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

[0089] In some optional embodiments, the cab 10 further comprises a steering mechanism 5, the steering mechanism 5 comprises a steering wheel 51, a steering pull rod 54 and a steering gear 55, the steering wheel 51 is arranged in the cab 10, the steering gear 55 is fixedly arranged on the vehicle frame and located below the cab 10, and the two ends of the steering pull rod 54 are respectively drivingly connected to the steering gear 55 and the hub of the front wheel 20, and the length L13 of the steering pull rod 54 along the X direction satisfies 440mm≤L13≤540mm.

[0090] The steering pull rod 54 is used to connect the steering wheel 51 and the front wheel 20, so as to convert the steering operation of the driver into the actual steering action of the front wheel 20.

[0091] Compared with the existing light truck, the length L13 of the steering pull rod 54 in the X direction is reduced based on the center point of the front wheel 20 moving forward in the X direction, and the end of the steering pull rod 54 is connected to the front wheel 20 hub, so that the length L13 of the steering pull 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 pull rod 54 in the X direction is 470mm, 490mm or 510mm.

[0092] In some alternative embodiments, the steering mechanism 5 further comprises a steering rocker arm 56 and a steering elbow arm, the first end of the steering pull rod 54 is drivingly connected to the steering gear 55 through the steering rocker arm 56, and the second end of the steering pull rod 54 is connected to the front wheel 20 hub through the steering elbow arm.

[0093] When the driver turns the steering wheel 51, the steering rocker arm 56 will move with the turning of the steering wheel 51, and at the same time, the turning of the steering wheel 51 is converted into the movement of the vehicle in the Y direction through the steering pull rod 54, and the steering elbow arm is used to transmit the steering force to improve the stability of the chassis 100 during steering.

[0094] In addition, by drivingly connecting the first end of the steering pull rod 54 to the steering gear 55 through the steering rocker arm 56, and connecting the second end of the steering pull rod 54 to the front wheel 20 hub through the steering elbow arm, the reliability of steering can be improved on the basis of shortening the length L13 of the steering pull rod 54 in the X direction, and the steering mechanism is more convenient to set.

[0095] It can be understood that on the basis of adjusting the position of the front wheel 20, the man-machine design in the cab 10 also needs to be adjusted accordingly to improve the driving comfort of the driver and the convenience of getting on and off the vehicle.

[0096] Based on this, the cab 10 in the embodiments of the present application takes the parameter of the front wheel position into the evaluation system of the convenience of getting on and off the vehicle, and more specifically, the steering wheel, the door, the brake pedal, the driver's seat, etc. are positioned and designed according to the position of the front wheel hub, so as to obtain a better solution of the man-machine arrangement of the cab which can meet the convenience of the driver getting on and off the vehicle, which is particularly important for trucks, especially light trucks.

[0097] Please refer to Figures 1 to 5 In some alternative 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 of L11 satisfies: -65mm≤L11≤335mm. Wherein, L11 can be the size measured along the X direction between 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.

[0098] Wherein, L11 takes negative value 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, and L11 takes positive 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.

[0099] Wherein, L11 can be the size measured along the X direction between the projection of the center point of the steering wheel 51 on the Y0 plane and the projection of the center of the front wheel 20 on the Y0 plane.

[0100] The steering mechanism 5 further comprises a steering shaft 52 and a steering shaft support 53, in the driver's cabin 10, the steering wheel 51 is often drivingly connected with the steering shaft 52, and the steering shaft 52 is fixedly installed on the front portion 11 of the driver's cabin body 1 through the steering shaft support 53.

[0101] Since the driver's position can be determined by the steering wheel 51, by taking the position of the front wheel 20 into the evaluation system of the convenience of getting on and off the vehicle, and more specifically, by positioning the steering wheel 51 with the position of the center of the front wheel 20, a better solution of the driver-cabin layout that can meet the convenience of getting on and off the vehicle for the driver can be obtained.

[0102] When the steering mechanism 5 is positioned with the position of 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 under the condition that the maximum size of the driver's cabin body 1 is constant (especially for the light truck with smaller driver's cabin length), the driver gets on and off the vehicle from the rear side of the front wheel 20, and enough space can be left at the front portion 11, so that the front portion 11 of the driver's cabin 10 can be designed with space for forming a streamlined structure, and the low-drag driver's cabin 10 design can be realized. And 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 not be moved too much backward, so that the driver's cabin space can be reduced, and under the condition that the size of the light truck is constant, the cargo box space can be increased, and the load-carrying performance of the light truck can be improved.

[0103] In some alternative 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 alternatively, 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 alternatively, 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 one embodiment of the present application, L11=105mm, 135mm or 155mm, in which case, the compact arrangement of the cab man-machine and the front wheels can be achieved, so that the front part 11 can have appropriate space to form a streamlined structure, so as to achieve the design of the low wind resistance cab 10. Also, the convenience of getting on and off the cab can be improved while reducing the cab space, and the performance of the cab 10 can be improved.

[0105] Please refer to Figures 1 to 7 , Figure 6 The side view of the cab 10 provided by some embodiments of the present application is shown, Figure 7 The side view of the cab 10 provided by some embodiments of the present application is shown.

[0106] In some optional embodiments, the side part 12 is provided with a door 2, and in the X direction, the front edge and the rear edge of the door 2 are located on both sides of the wheel opening 121, and the wheel cover area S1 is formed between the front edge of the door 2 and the rear edge of the wheel opening 121, and the step area S2 is formed between the rear edge of the door 2 and the rear edge of the wheel opening 121.

[0107] Wherein, the side part 12 is provided with a door hole 122 for the driver to get on and off the cab, and the door 2 is rotatably connected to the side part 12 and covers the door hole 122, or the door 2 is slidably connected to the side part 12 and covers the door hole 122. The door 2 can be a special-shaped structure, the front edge of the door 2 refers to the most forward edge in the X direction, and the rear edge of the door 2 refers to the last edge in the X direction.

[0108] Generally, the most forward edge of the door 2 corresponds to the most forward edge of the door hole 122 of the door 2, and the pivot point of the door 2 is generally arranged at the most forward edge of the door 2, so as to be fully opened and utilize the door hole 122 of the door 2 to improve the convenience of the driver getting on and off the cab.

[0109] Since the driver position can also be determined by the door 2, by taking the position of the front wheel 20 as a parameter in the evaluation system of the convenience of getting on and off the cab, and more specifically, by positioning the door 2 with the position of the center of the front wheel 20, a better solution of the cab man-machine arrangement that can meet the convenience of the driver getting on and off the cab can be obtained.

[0110] When the door 2 is positioned with the position of 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, so as to form the step area S2 between the rear edge of the door 2 and the rear edge of the wheel opening 121. And by making the orthographic projection of the steering wheel 51 on the side part 12 at least partially located in the wheel cover area S1 and having a predetermined distance from the rear edge of the door 2 in the X direction, the driver position can be made to correspond to the step area S2, so as to facilitate the driver getting on and off the cab through the step area S2, and improve the convenience of getting on and off the cab.

[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. Wherein, the value range of L1 satisfies 630mm≤L1≤1030mm, and the value range of the ratio of L1 and L2 satisfies 0.65≤L1 / L2≤0.95.

[0112] Wherein, 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 better the convenience of the driver getting on and off the vehicle, but it will also cause the overall length of the cab to increase, thereby directly affecting the load 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 under the condition of the overall length of the vehicle, and the larger the cargo box can be designed, but the convenience of the driver getting on and off the vehicle is worse, and the space left for wind resistance design is smaller, which is difficult to realize 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 stepping area S2 can be increased to improve the convenience of the driver getting on and off the vehicle, and 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, and the cargo box space can be increased under the condition of the overall length of the vehicle.

[0115] And 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, enough space can be left at the front part 11 to make the front part 11 of the cab 10 form a streamlined structure, realize low wind resistance cab 10 design, and thus the wind resistance coefficient can be reduced while ensuring getting on and off the vehicle, energy consumption can be reduced, and the cruising range of the cab 10 can be improved. On the other hand, by setting L1 relatively large, more generous space can be provided for the driver to get on the vehicle, which is conducive to improving the convenience of getting on and off the vehicle.

[0116] For the cab 10 in the above embodiments, when the ratio a of L1 to L2 is less than 0.65, the door 2 is moved forward relative to the center of the front wheel 20 too much, resulting in less space for getting on and off behind the front wheel, affecting the convenience of getting on and off, and in addition, the door 2 is moved forward relative to the center of the front wheel 20 too much, which makes 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 enough. When the ratio a of L1 to L2 is greater than 0.95, the door 2 is moved backward relative to the center of the front wheel 20 too much, and in the case of a certain overall vehicle length, 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 embodiments of the present application satisfy 630mm≤L1≤1030mm, and the ratio a of L1 to 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 meeting the convenience of getting on and off.

[0118] In some optional embodiments, the value range of the distance L1 between the rear edge of the door 2 and the center of the front wheel 20 satisfies 680mm≤L1≤980mm, further optionally, the value range of the distance L1 between the rear edge of the door 2 and the center of the front wheel 20 satisfies 780mm≤L1≤930mm, and further optionally, the value range of the distance L1 between the rear edge of the 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 can be 0.77, 0.795 or 0.81, in other words, L1 / L2=0.77, L1 / L2=0.795 or L1 / L2=0.81, the ratio of the distance between the front edge of the door 2 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 allow a smaller cab 10 size while meeting the needs of the driver getting on and off, and allow the front part 11 of the cab 10 to form a streamlined structure, so as to balance the convenience of getting on and off, shorten the length of the cab, and reduce the wind resistance of the cab 10.

[0120] In one embodiment of the present application, L1 = 833 mm, L2 = 1048 mm, a = L1 / L2 = 0.795, the relative positions between the front and rear edges of the door and the center of the front wheel 20 along the X direction can meet the space requirement of the cab 10 and the getting on and off requirement, and at the same time, design space for forming a streamlined structure of the front part 11 of the cab 10 is reserved, which is beneficial to reduce the wind resistance of the cab 10 and reduce energy consumption.

[0121] Referring to Figures 1 to 8 , Figure 8 A side view of the cab 10 provided by some embodiments of the present application is shown.

[0122] In some optional embodiments, the cab 10 further comprises a brake pedal 3 arranged in the driver's cabin and connected to the front part 11, and when the brake pedal 3 is in a non-braking state, the center point of the brake pedal 3 is located on one side of the center point of the wheel opening 121 towards the front part 11 and the distance between the center point of the brake pedal 3 and the center point of the wheel opening 121 is L9, and the value of L9 satisfies: 10 mm≤L9≤410 mm.

[0123] In some optional embodiments, the cab 10 further comprises a brake pedal 3 arranged in the driver's cabin and connected to the front part 11, and when the brake pedal 3 is in a non-braking state, the center point of the brake pedal 3 is located on one side of the center point of the wheel opening 121 towards the front part 11 and the distance between the center point of the brake pedal 3 and the center point of the wheel opening 121 is L9, and the value of L9 satisfies: 10 mm≤L9≤410 mm.

[0124] Since the driver's position can also be determined by the brake pedal 3, by taking the position of the front wheel 20 as a parameter in the evaluation system of the getting on and off convenience, more specifically, by positioning the brake pedal 3 with reference to the position of the center of the front wheel 20, a better solution of the cab man-machine arrangement that can meet the convenience of the driver getting on and off can be obtained.

[0125] When the brake pedal 3 is positioned with reference to the position of 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 to the front wheel, and at this time, the size of the step area S2 for the driver getting on and off will be reduced, which is not conducive to the convenience of the driver getting on and off; 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 from the front wheel 20, and at this time, the size of the step area S2 for the driver getting on and off will be increased, which is conducive to the convenience of the driver getting on and off, but at the same time, the overall length of the cab will be increased, which is not conducive to improving the carrying capacity of the whole vehicle.

[0126] Specifically, by setting the distance L9 between the center point of the brake pedal 3 and the center of the front wheel 20 to be less than or equal to 410 mm when the brake pedal 3 is in the non-braking state, the driving position can be moved rearward by a sufficient distance to increase the size of the step area S2 along the X direction, thereby facilitating the driver to get on and off the vehicle. Moreover, by setting the distance L9 between the center point of the brake pedal 3 and the center of the front wheel 20 to be greater than or equal to 10 mm, the driving position can not be moved too far rearward, thereby reducing the size of the driver's cabin to increase the size of the cargo box and improve the cargo carrying performance of the light truck under the condition that the size of the light truck is constant.

[0127] In some alternative embodiments, the distance L9 between the center of the front wheel 20 and the center point of the brake pedal 3 when the brake pedal 3 is in the non-braking state is in the range of 60 mm to 360 mm, and further alternatively, the distance L9 between the center of the front wheel 20 and the center point of the brake pedal 3 is in the range of 110 mm to 310 mm.

[0128] In one specific embodiment of the present application, the distance L9 is 180 mm, 210 mm or 250 mm, which can reserve design space for forming a streamlined structure of the front portion 11 under the condition of a limited driver's cabin length, thereby facilitating the design of a low-drag driver's cabin 10. Moreover, the size of the driver's cabin can be reduced while the convenience of getting on and off the vehicle is improved, thereby improving the performance of the driver's cabin 10.

[0129] Please refer to Figures 1 to 9 , Figure 9 FIG. 6 shows a side view of the driver's cabin 10 according to some embodiments of the present application. In some alternative embodiments, the driver's cabin 10 further comprises a driver's seat 4 arranged in the driver's cabin, and the driver's seat 4 is at least partially projected onto the step area S2 in the side portion 12.

[0130] In the X direction, 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 L10 is in the range of 365 mm to 765 mm. 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 along the X direction.

[0131] Since the driver position can also be determined by the driver seat 4, by taking the front wheel 20 position as a parameter in the evaluation system of the convenience of getting on and off the vehicle, and more specifically, by positioning the driver seat 4 with respect to the position of the center of the front wheel 20, a better solution of the driver cab man-machine layout that can meet the convenience of getting on and off the vehicle for the driver can be obtained.

[0132] When the driver seat 4 is positioned with respect to the position of the center of the front wheel 20, it can be understood that the smaller the distance L10 between the center point of the driver seat 4 and the center of the front wheel 20, the closer the driver seat position to the front wheel 20, at this time the size of the stepping area S2 for the driver to get on and off the vehicle will be reduced, which is not conducive to the convenience of getting on and off the vehicle for the driver; on the contrary, the larger the distance L10 between the center point of the driver seat 4 and the center of the front wheel 20, at this time the driver seat position will be away from the front wheel 20, then the size of the stepping area S2 for the driver to get on and off the vehicle will be increased, which is conducive to the convenience of getting on and off the vehicle for the driver, but at the same time it will also increase the overall length of the cab, which is not conducive to improving the load capacity of the whole vehicle.

[0133] Specifically, the center point of the driver seat 4 is located on the side of the center of the front wheel 20 away from the front portion 11 and the distance L10 between the center point of the driver seat 4 and the center of the front wheel 20 is ≥365mm, which can move the driving position backward to form a streamlined structure in the front portion 11 and increase the size of the stepping area S2 along the X direction to facilitate the driver to get on and off the vehicle. And by making the distance L10 between the center point of the driver seat 4 and the center of the front wheel 20 ≤765mm, the driving position can not be moved too much, so as to reduce the cab space to increase the cargo box space under the condition of the size of the light truck being constant, so as to improve the load capacity 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 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 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 moderate space at the front portion 11 to form a streamlined structure in the front portion 11 of the cab 10 to realize the design of the low-drag cab 10. And it can also improve the convenience of getting on and off the vehicle while reducing the cab space, thereby improving the performance of the cab 10.

[0136] Please refer to Figures 1 to 12 , Figure 10A structural schematic diagram of the cab 10 provided by some embodiments of the present application is shown, Figure 11 A side view of the cab 10 provided by yet some embodiments of the present application is shown, Figure 12 A measurement schematic diagram of the inclination angle provided by some embodiments of the present application is shown.

[0137] To further understand the technical solutions of the present application, the streamlined structure formed by the front part 11 of the cab 10 is described below in combination with specific embodiments.

[0138] In some optional embodiments, the front part 11 comprises a windshield part 111, which is arranged to be inclined to the vertical plane and the inclination angle is α1, wherein the value range of α1 satisfies: 15°≤α1≤25°.

[0139] The inclination angle α1 of the windshield part 111 to the vertical plane can be represented by the angle between the inclined line of the windshield part 111 and the vertical line. The inclined line of the windshield part 111 refers to the line connecting the first intersection point and the second intersection point, the first intersection point being the middle point of the lower edge of the windshield part 111 along the Y direction, and the second intersection point being the intersection point formed by the 457mm circular arc with the first intersection point and the windshield part 111.

[0140] It can be understood that the greater the inclination angle α1 of the windshield part 111 to the vertical plane, the smaller the positive pressure received by the cab, which is conducive 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., and the driver's backward movement will inevitably lead to an increase in the overall length of the cab, which is also not conducive to the carrying capacity of the whole vehicle. On the contrary, the smaller the inclination angle α1 of the windshield part 111 to the vertical plane, the more conducive to human-machine arrangement and the reduction of the length of the cab, but at this time the positive pressure received by the cab will increase, thereby increasing the wind resistance, which is not conducive to the endurance mileage of the whole vehicle.

[0141] In the present application, by making the inclination angle α1 of the windshield part 111 to the vertical plane ≥15°, the windshield part 111 can be inclined to the vertical plane at a sufficient angle to reduce the positive pressure area, reduce the drag coefficient, and reduce the energy consumption of the cab 10. And by making the inclination angle α1 of the windshield part 111 to the vertical plane ≤25°, the windshield part 111 can be inclined to the vertical plane without being too large, so that the interior space of the cab can meet the demand, so as to improve the comfort of the driver and the convenience of getting on and off the vehicle.

[0142] In one specific embodiment of the present application, α1=18°, 20° or 23°, in order to balance the demand of reducing wind resistance and reducing the space of the cab, and improve the comprehensive product competitiveness of the cab 10.

[0143] In some optional embodiments, the front portion 11 further comprises a first section 112 and a second section 113 arranged in the Z direction, the second section 113 is located on the side of the first section 112 towards the windshield portion 111 and connected with the windshield portion 111. In the Z direction, the second section 113 is arranged at an angle a2 with respect to the vertical plane, and the difference between the angle a1 of the windshield portion 111 with respect to the vertical plane and the angle a2 of the second section 113 with respect to the vertical plane satisfies: 0°≤a1-a2≤5°.

[0144] The first section 112 can be a region where the front bumper is arranged, and the second section 113 can be a region where the front panel is arranged.

[0145] Similarly to the windshield portion 111, the angle a2 of the second section 113 with respect to the vertical plane can be represented by the angle between the inclined line of the second section 113 and the vertical line. The inclined 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 in the Y direction, and the fourth intersection point is the intersection point formed by the 457mm circular arc with the third intersection point and the second section 113.

[0146] Since the smaller the difference between the angle a1 of the windshield portion 111 with respect to the vertical plane and the angle a2 of the second section 113 with respect to the vertical plane, the closer the inclination angles of the windshield portion 111 and the second section 113, i.e. the windshield angle, and the smaller the wind resistance coefficient, by making 0°≤a1-a2≤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 further comprises functional structures such as the steering wheel 51, the brake pedal 3, etc., which need to be connected to the second section 113 of the cab body 1, the angle a2 of the second section 113 with respect to the vertical plane cannot be too large, i.e. the specific angle a2 of the second section 113 with respect to the vertical plane can be adjusted according to the angle a1 of the windshield portion 111 with respect to the vertical plane and the structure of the cab 10, which can take into account the setting requirements of the windshield and the functional structures inside the cab 10.

[0148] Please refer to Figures 1 to 13 , Figure 13 The figure shows the inclination angle of the first section according to some embodiments of the present application. In some optional embodiments, the angle a3 of the first section 112 with respect to the vertical plane is smaller than the angle a2 of the second section 113 with respect to the vertical plane, and 0°≤a3≤10°.

[0149] It can be understood that the inclination angle of the first section 112 has an influence on both the wind resistance and the interior space of the cab. For example, the greater the inclination angle of the first section 112, the smaller the windward area of the front part of the cab, which is advantageous for reducing the wind resistance, but has a limiting effect on the space for the man-machine arrangement (for example, brake pedal, steering wheel and other components) in the cab. In an embodiment of the present application, under the condition that the maximum size of the cab 10 in the X direction is constant, by reducing the inclination angle α3 of the first section 112 relative to the vertical plane, the setting position of the second section 113 and the windshield section 111 and the like in the X direction can be moved forward, so that the interior space of the cab can be increased, the setting of functional components in the cab 10 is more convenient, and the comfort of the driver and the convenience of getting in and out of the cab are improved.

[0150] In a specific embodiment of the present application, α3 = 0° or 5°, which can reduce the wind resistance to a certain extent, avoid excessive arrangement of components in the cab, facilitate the setting of the front bumper, and improve the crashworthiness of the cab 10.

[0151] In some alternative embodiments, the maximum size of the first section 112 in the Z direction is L5, and the value of L5 satisfies 320mm≤L5≤420mm. The maximum size of the first section 112 in the Z direction L5 can be the size measured in the Z direction of the projection of the first section 112 on the Y0 plane.

[0152] Since the first section 112 is usually formed by the front bumper, the size of the first section 112 in the Z direction can be represented by the distance from the lowermost end of the front bumper in the Z direction to the fifth intersection point, which is the uppermost end of the middle position of the front bumper in the Y direction. By making the maximum size L5 of the first section 112 in the Z direction ≥ 320mm, the aesthetic appearance of the cab 10 and the height of the license plate that can be set are 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 in the Z direction ≤ 420mm, the height of the first section 112 in the Z direction can be reduced 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 = 340mm, 370mm or 400mm, so as to take into account the need to reduce the wind resistance coefficient and the setting of functional structures inside the cab 10.

[0154] In some alternative embodiments, in 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 of L6 satisfies 220mm≤L6≤320mm.

[0155] The lower edge of the front wheel 20 is the ground line when the cab 10 is in an empty state, and thus the distance between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is the distance between the lowermost edge of the front bumper and the ground line in the Z direction.

[0156] It can be understood that the distance L6 between the lowermost 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 whole vehicle. The greater the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20, the greater the approach angle and the better the passability of the whole vehicle, but the ground clearance is increased, and the wind resistance is also increased, which is not conducive to reducing energy consumption. On the contrary, the smaller the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20, the smaller the wind resistance, which is conducive to improving the cruising range, but the passability of the whole vehicle is poor.

[0157] In an embodiment of the present application, by setting the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 to be greater than or equal to 220 mm, the ground clearance of the front bumper in the Z direction is increased, the risk of the cab 10 colliding with the ground is reduced, and the cab 10 can run on various road surfaces. And by setting the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 to be less than or equal to 320 mm, the ground clearance is not too large, the wind resistance coefficient is reduced, the energy consumption of the cab 10 is reduced, and the cruising range and driving performance are 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 is in the range of 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 is in the range of 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 reduce the wind resistance coefficient and meet the driving requirements of the cab 10.

[0160] Please refer to Figures 1 to 14 , Figure 14 The side view of the cab 10 provided by some embodiments of the present application is shown.

[0161] In some optional embodiments, the front part 11 further comprises a third section 114, which is located on the side of the windshield section 111 away from the wheel opening 121 and connected to the windshield section 111 in the Z direction. The third section 114 is inclined relative to the vertical plane and the inclination angle is α4, and the value of α4 is in the range of 25°≤α4≤40°.

[0162] The third section 114 refers to a section above the windshield in the Z direction, and 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, or the third section 114 can be separately arranged and form a fairing.

[0163] Similarly to the windshield section 111, the inclination angle a4 of the third section 114 relative to the vertical plane can be represented by the angle between the inclined line of the third section 114 and the vertical line. The inclined line of the third section 114 refers to the line connecting the sixth intersection point and the seventh intersection point, the sixth intersection point being the middle point of the lower edge of the third section 114 in the Y direction, and the seventh intersection point being the intersection point formed by the third section 114 and the 457 mm circular arc with the sixth intersection point as the center.

[0164] By setting the inclination angle a4 of the third section 114 relative to the vertical plane to be greater than or equal to 25°, the third section 114 can be inclined relative to the vertical plane at a sufficient angle to reduce the wind resistance coefficient and reduce the energy consumption of the cab 10. By setting the inclination angle a4 of the third section 114 relative to the vertical plane to be less than or equal to 40°, the third section 114 can be inclined relative to the vertical plane at a not too large angle, so that the interior space of the cab can meet the requirements, thereby improving the comfort of the driver and the convenience of getting in and out of the cab.

[0165] In a specific embodiment of the present application, a4 = 30°, 33°, 35°, or 38°, so as to balance the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0166] Referring to Figures 1 to 15 , Figure 15 FIG. 6 shows a top view of the cab 10 according to another embodiment of the present application.

[0167] In some optional embodiments, in the Y direction, the maximum size of the cab body 1 is L7, and the value of L7 satisfies: 2120 mm ≤ L7 ≤ 2220 mm.

[0168] The maximum size of the cab body 1 in the Y direction refers to the distance between the leftmost end and the rightmost end of the projection of the cab body 1 on the X0 plane in the Y direction, i.e., the distance between the two side portions 12 of the cab body 1 in the Y direction, except for the rearview mirror and the blind mirror of the cab 10. The maximum size of the cab body 1 in the Y direction is related to the size of the cargo box in the Y direction, and can be equal to the size of the cargo box in the Y direction to reduce the wind resistance.

[0169] In a specific embodiment of the present application, the size of the cargo box in the Y direction is set to 2170 mm, and therefore the maximum size L7 of the cab body 1 is 2170 mm, so that the surface of the side portion 12 of the cab body 1 is flush with the cargo box to reduce the wind resistance coefficient.

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

[0171] The chassis 100 provided by the embodiments of the present application comprises the cab 10, a vehicle frame, the front wheel 20 and the rear wheel 30. The cab 10 can comprise a cab body 1 and a door 2. The cab body 1 comprises 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 wheel 20 and are concentrically arranged with the front wheel 20.

[0172] In the X direction, the maximum dimension of the cab body 1 is L4 = 1750 mm. The length dimension of the front suspension is L8 = 700 mm, 720 mm, 740 mm or 760 mm. The wheelbase L14 of the front wheel 20 and the rear wheel 30 in the X direction is 3750 mm.

[0173] In the X direction, the front edge and the rear edge of the door 2 are located on both sides of the center point of the wheel opening 121. In the X direction, the distance between the front edge and the rear edge is L2 = 1048 mm. The distance between the rear edge of the door 2 and the center point of the wheel opening 121 is L1 = 833 mm. In addition, the cab 10 further comprises a brake pedal 3. In the non-braking state of the brake pedal 3, in 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 away from the front portion 11 and the distance between the center point of the brake pedal 3 and the center point of the wheel opening 121 is L9 = 210 mm. In addition, the cab 10 further comprises a driver's seat 4. In 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 portion 11 and the distance between the center point of the driver's seat 4 and the center point of the wheel opening 121 is L10 = 565 mm. In addition, the cab 10 further comprises a steering wheel 51. In 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 between the center point of the steering wheel 51 and the center point of the wheel opening 121 is L11 = 135 mm.

[0174] Further, the front portion 11 comprises a windshield portion 111. The windshield portion 111 is arranged to be inclined to the vertical plane and the inclination angle a1 = 20°. The front portion 11 further comprises a first zone portion 112, a second zone portion 113 and a third zone portion 114 arranged in the Z direction. The difference between the inclination angle a1 of the windshield portion 111 to the vertical plane and the inclination angle a2 of the second zone portion 113 to the vertical plane satisfies: 0°≤a1-a2≤5°. The inclination angle a3 = 0° of the first zone portion 112 to the vertical plane. The inclination angle a4 = 33° of the third zone portion 114 to the vertical plane.

[0175] Further, the maximum dimension of the first zone portion 112 in the Z direction is L5 = 370 mm. The distance between the lowermost edge of the first zone portion 112 and the lower edge of the front wheel 20 is L6 = 270 mm.

[0176] According to the test, under the high-speed energy consumption condition of constant speed 90km / h, the wind resistance coefficient of the traditional light truck with a flat-headed cab is about 0.500, and the wind resistance coefficient of the light truck with the cab of the above-mentioned embodiment of the application is about 0.300, which can reduce the energy consumption of the traditional light truck by about 20%.

[0177] Therefore, the cab 10, the chassis 100 and the light truck according to the embodiments of the application have the advantages of small cabin space, high convenience of getting on and off, low wind resistance coefficient and low energy consumption, and are more convenient for popularization and application.

[0178] The above is only a specific embodiment of the application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described herein. It should be understood that the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, and these modifications or replacements should be covered within the protection scope of the application.

Claims

1. A cab characterized in that, Comprising: a driver's compartment comprising a front portion and side portions on both sides of the front portion, the side portions being provided with wheel openings for cooperating with and being concentric with front wheels; in the X direction, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the driver's compartment satisfies: 0.38≤L8 / L4≤0.48; wherein the length dimension of the front suspension is the distance between the frontmost end of the front portion and the center point of the wheel opening in the X direction.

2. The cab of claim 1, wherein, in the X direction, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the driver's compartment satisfies: 0.40≤L8 / L4≤0.

45.

3. The cab of claim 1, wherein, the length dimension L8 of the front suspension satisfies: 640mm≤L8≤840mm.

4. The cab of claim 1, wherein, the maximum dimension L4 of the driver's compartment in the X direction satisfies: 1550mm≤L4≤1950mm.

5. Cab according to any one of claims 2 to 4, characterized in that the front portion comprises a windshield portion, the windshield portion being arranged obliquely to the vertical plane with an oblique angle α1, wherein the value range of α1 satisfies: 15°≤α1≤25°.

6. The cab of claim 5, wherein, the front portion comprises a first zone portion and a second zone portion arranged in the Z direction, the second zone portion being located on the side of the first zone portion facing the windshield portion and connected with the windshield portion; in the Z direction, the second zone portion is arranged obliquely to the vertical plane with an oblique angle α2, and the difference between the oblique angle α1 of the windshield portion to the vertical plane and the oblique angle α2 of the second zone portion to the vertical plane satisfies: 0°≤α1-α2≤5°.

7. The cab of claim 6, wherein, the oblique angle of the first zone portion to the vertical plane is smaller than the oblique angle of the second zone portion to the vertical plane, and the value range of the oblique angle α3 of the first zone portion to the vertical plane satisfies: 0°≤α3≤10°.

8. The cab of claim 6, wherein, the maximum dimension of the first zone portion in the Z direction is L5, and the value range of L5 satisfies: 320mm≤L5≤420mm.

9. The cab of claim 5, wherein, the front portion further comprises a third zone portion, which is located on the side of the windshield portion away from the wheel opening and connected with the windshield portion in the Z direction, and the third zone portion is arranged obliquely to the vertical plane with an oblique angle α4, and the value range of α4 satisfies: 25°≤α4≤40°.

10. The cab of claim 1, wherein, the driver's cabin further comprises a brake pedal connected to the front portion, and in the non-braking state of the brake pedal, the center point of the brake pedal is located on the side of the center point of the wheel opening facing the front portion in the X direction, and the distance between the center point of the brake pedal and the center point of the wheel opening is L9, and the value range of L9 satisfies: 10mm≤L9≤410mm.

11. A pan characterized by, Comprising: the driver's cabin of any one of claims 1-10; a vehicle frame, the driver's cabin being mounted on the vehicle frame; front wheels, the centers of the front wheels being arranged coincidentally with the centers of the wheel openings of the driver's cabin.

12. The base pan of claim 11, wherein, the chassis further comprises rear wheels, the rear wheels being arranged on the vehicle frame and spaced apart from the front wheels in 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, the wheelbase being the distance between the center points of the front wheels and the rear wheels along the X direction.

13. The base pan of claim 12, wherein, The wheelbase L14 satisfies 3360mm≤L14≤4000mm.

14. The base pan of claim 12, wherein, The cab further comprises a steering mechanism, the steering mechanism comprising a steering wheel, a steering pull rod and a steering gear, the steering gear being fixedly arranged on the frame and located below the cab, two ends of the steering pull rod being drivingly connected to the steering gear and the hub of the front wheel respectively, the length L13 of the steering pull rod along the X direction satisfying 440mm≤L13≤540mm.

15. The base pan of claim 14, wherein, The steering mechanism further comprises a steering rocker arm and a steering elbow, the first end of the steering pull rod being drivingly connected to the steering gear through the steering rocker arm, and the second end of the steering pull rod being connected to the hub of the front wheel through the steering elbow.

16. The base pan of claim 11, wherein, The front part of the cab is provided with a front bumper, and the distance between the lower edge of the front bumper and the lower edge of the front wheel along the Z direction is L6, the value range of L6 satisfying 220mm≤L6≤320mm.

17. A pickup truck characterized by A vehicle comprising 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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