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 is provided with a driving cabin, 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. The driving seat is arranged in the driving cabin and connected to the driving compartment body. In the X direction, the center point of the driving seat is located on the side, away from the front portion, of the center point of the wheel opening, the distance between the center point of the driving seat and the center point of the wheel opening is L10, and the value range of L10 is larger than or equal to 365 mm and smaller than or equal to 765 mm; in the X direction, the maximum size of the driving compartment is L4, and the value range of the L4 meets the condition that the L4 is larger than or equal to 1550 mm and smaller than or equal to 1950 mm. According to the cab in the embodiment of the invention, the layout of the cab can be reconstructed, a design space is reserved for forming a streamline structure at the front part of the cab in a limited space, and the design of the low-wind-resistance cab is conveniently realized.

Description

TECHNICAL FIELD

[0001] The 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] The driving comfort and the getting-on / off convenience are concerned by the driver because they directly affect the driving experience.

[0004] In addition, reducing the air resistance of the cab is concerned more and more because it can improve the product competitiveness of the whole vehicle product related to the cab. This is because the air resistance will increase significantly with the increase of the speed of the whole vehicle, which leads to the significant increase of the energy consumed due to the increase of the air resistance, and in the case of the total energy of the whole vehicle (for example, the battery capacity is certain), this will inevitably affect the cruising range of the whole vehicle. CONTENT OF THE INVENTION

[0005] The application provides a cab, a chassis and a light truck, which reconfigures the layout of the cab, reserves design space for the formation of a streamlined structure in the front part of the cab in a limited space, and facilitates the design of a low wind resistance cab.

[0006] In a first aspect, the application provides a cab, comprising a cab body and a driver seat, the cab body having a driver cabin, 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 for cooperation with front wheels and being concentrically arranged with the front wheels, and the driver seat being arranged in the driver cabin and connected to the cab body. In the X direction, the center point of the driver seat is located on the side away from the front part of the center point of the wheel opening, and the distance between the center point of the driver seat and the center point of the wheel opening is L10, and the value range of L10 satisfies 365mm≤L10≤765mm. In the X direction, the maximum size of the cab body is L4, and the value range of L4 satisfies 1550mm≤L4≤1950mm.

[0007] According to any one of the preceding embodiments of the first aspect of the application, the value range of the distance L10 between the center point of the driver seat and the center point of the wheel opening satisfies 415mm≤L10≤715mm.

[0008] According to any one of the implementation manners of the first aspect of the application, the side portion is provided with a door, in the X direction, the front edge and the rear edge of the door are located on the two sides of the wheel opening respectively, and the wheel cover area is formed between the front edge of the door and the rear edge of the wheel opening, and the step area is formed between the rear edge of the door and the rear edge of the wheel opening; wherein the orthographic projection of the driver's seat on the side portion is at least partially located in the step area.

[0009] According to any one of the implementation manners of the first aspect of the application, in the X direction, the distance between the center point of the wheel opening and the rear edge of the door is L1, and the distance between the front edge of the door and the rear edge of the door is L2; wherein the value range of L1 satisfies 630mm≤L1≤1030mm, and the value range of the ratio a of L1 to L2 satisfies 0.65≤a≤0.95.

[0010] According to any one of the implementation manners of the first aspect of the application, the driver's compartment further comprises a rear panel, the rear panel is arranged at a distance from the front portion, the rear panel is arranged between and connected to the side portions on the two sides of the front portion, in the X direction, the driver's seat is arranged between the front portion and the rear panel, and a gap is arranged between the driver's seat and the rear panel.

[0011] According to any one of the implementation manners of the first aspect of the application, in the X direction, the maximum dimension L4 of the driver's compartment satisfies 1600mm≤L4≤1900mm.

[0012] According to any one of the implementation manners of the first aspect of the application, the front portion comprises a windshield portion, the windshield portion is arranged at an inclination to the vertical plane and the inclination angle is α1, wherein the value range of α1 satisfies: 15°≤α1≤25°.

[0013] According to any one of the implementation manners of the first aspect of the application, the front portion comprises a first zone portion and a second zone portion arranged in the Z direction, the second zone portion is located on the side of the first zone portion towards the windshield portion and connected to the windshield portion; in the Z direction, the second zone portion is arranged at an inclination to the vertical plane and the inclination angle is α2, and the difference between the inclination angle α1 of the windshield portion to the vertical plane and the inclination angle α2 of the second zone portion to the vertical plane satisfies: 0°≤α1-α2≤5°.

[0014] According to any one of the implementation manners of the first aspect of the application, the inclination angle of the first zone portion to the vertical plane is smaller than the inclination angle of the second zone portion to the vertical plane, the inclination angle of the first zone portion to the vertical plane is α3, and 0°≤α3≤10°.

[0015] According to any one of the implementation manners of the first aspect of the application, the maximum dimension of the first zone portion in the Z direction is L5, and the value range of L5 satisfies 320mm≤L5≤420mm.

[0016] According to any one of the implementation manners of the first aspect of the application, the front part further comprises a third section, which is located on the side of the windshield part away from the wheel opening and connected to the windshield part along the Z direction, the third section is arranged to be inclined to the vertical plane and the inclination angle is a4, and the value range of a4 satisfies 25°≤a4≤40°.

[0017] The second aspect of the application provides a chassis comprising the cab of the above-mentioned embodiments.

[0018] The third aspect of the application provides a light truck comprising the cab of the first aspect of the application, the chassis and the cargo box, the chassis has front wheels and rear wheels, the center of the front wheels is arranged to coincide with the center of the wheel opening of the cab, and the cargo box is arranged on the chassis.

[0019] According to any one of the implementation manners of the third aspect of the application, the front part of the cab is provided with a front bumper, and along the Z direction, the distance between the lowermost edge of the front bumper and the lower edge of the front wheel is L6, and the value range of L6 satisfies 220mm≤L6≤320mm.

[0020] The cab provided by the embodiments of the application is designed by positioning the driver seat according to the position of the center point of the wheel opening, and compared with the existing light truck, the position of the driver's sitting posture relative to the whole vehicle is innovated. By setting the value range of the maximum size L4 of the cab body in the X direction to satisfy 1550mm≤L4≤1950mm, and setting the distance between the center point of the driver seat and the center point of the wheel opening to satisfy 365mm≤L10≤765mm, a better man-machine arrangement can be achieved to meet the driving comfort and the convenience of getting on and off the vehicle, while sufficient design space is reserved for other cab designs (for example, low-drag design) to further reduce energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings required to be used in the embodiments of the application will be briefly introduced. Those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 is a side view of the chassis provided by some embodiments of the application;

[0023] Figure 2 is a side view of the cab omitting the door provided by some embodiments of the application;

[0024] Figure 3 is a side view of the cab provided by some embodiments of the application;

[0025] Figure 4is a side view of a cab provided by some embodiments of the present application;

[0026] Figure 5 is a side view of a cab provided by some embodiments of the present application;

[0027] Figure 6 is a side view of a cab provided by some embodiments of the present application;

[0028] Figure 7 is a structural schematic view of a steering mechanism provided by some embodiments of the present application

[0029] Figure 8 is a top view of a chassis provided by some embodiments of the present application;

[0030] Figure 9 is a top view of a cab provided by some embodiments of the present application;

[0031] Figure 10 is a structural schematic view of a cab provided by some embodiments of the present application;

[0032] Figure 11 is a side view of a cab provided by some embodiments of the present application;

[0033] Figure 12 is a schematic view of a measurement of a tilt angle provided by some embodiments of the present application;

[0034] Figure 13 is a diagram of a tilt angle of a first section provided by some embodiments of the present application;

[0035] Figure 14 is a side view of a cab provided by some embodiments of the present application.

[0036] Reference signs are explained as follows:

[0037] 100 - chassis; 10 - cab; 20 - front wheel; 30 - rear wheel;

[0038] 1 - cab body; 11 - front portion; 111 - windshield portion; 112 - first section; 113 - second section; 114 - third section; 12 - side portion; 121 - wheel opening; 122 - door opening; 13 - rear wall; 2 - door; 3 - brake pedal; 4 - driver seat; 5 - steering mechanism; 51 - steering wheel; 52 - steering shaft; 53 - steering shaft support; 54 - steering tie rod; 55 - steering gear; 56 - steering arm;

[0039] S1 - wheelhouse section; S2 - step section.

[0040] In the drawings, the same components have the same reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0041] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one of ordinary skill in the art that the application can be practiced without some of these specific details. The description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessary obscurity of the application; and, the size of some structures can be exaggerated for clarity. Furthermore, features, structures or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0042] The orientation words appearing in the following description are the directions shown in the drawings, and are not intended to limit the specific structure of the present application. In the description of the present application, it should be further noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Please refer to Figure 1 , Figure 1 A side view of the chassis 100 provided by some embodiments of the present application is shown.

[0044] The embodiments of the present application provide a light truck, which comprises a chassis 100 and a cargo box arranged on the chassis 100.

[0045] 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 6000mm in the X direction and a total mass less than 4500kg.

[0046] The chassis 100 includes a chassis 100 with a cab 10 and a chassis 100 without a cab 10, i.e. the light truck can include a chassis 100 with a cab 10 and a cargo box, or a chassis 100 without a cab 10, a cargo box and a cab 10.

[0047] Taking the chassis 100 without the cab 10 as an example, the chassis 100 can carry various functional systems such as a power system (engine and / or power battery, motor, etc.), a transmission system, a suspension system and a braking system, and the chassis 100 also has front wheels 20 and rear wheels 30. The transmission system is used to transmit the power of the power system to the front wheels 20 and / or the rear wheels 30 to drive the light truck to travel.

[0048] It should be noted that the cab 10 in the embodiments of the present application can be used in the chassis 100 or related whole vehicle product (for example, a light truck) of each of the above embodiments and serves as a component part of the chassis 100 or related whole vehicle product (for example, a light truck), and of course, can also be produced or sold as an independent component.

[0049] In this document, the directions are defined with reference 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 of the driver, which is used to describe the left-right direction of the cab; and 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 plane of symmetry of the cab, the Z0 plane is a plane that is perpendicular to the Y0 plane and parallel to the ground, and the X0 plane is a plane that is perpendicular to both the Y0 plane and the Z0 plane.

[0050] Please refer to Figure 2 and Figure 3 , Figure 2 shows a side view of the cab 10 omitting the vehicle door 2 provided by some embodiments of the present application, Figure 3 shows a side view of the cab 10 provided by some embodiments of the present application.

[0051] The embodiments of the present application provide a cab 10, which comprises a driver compartment 1 and a driver seat 4, the driver compartment 1 has a driver cabin, the driver compartment 1 comprises 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 and are concentrically arranged with the front wheels 20, and the driver seat 4 is arranged in the driver cabin and is connected to the driver compartment 1.

[0052] In the X direction, the center point of the driver 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 between the center point of the driver seat 4 and the center point of the wheel opening 121 is L10, and the value range of L10 satisfies 365mm≤L10≤765mm. In the X direction, the maximum size L4 of the driver compartment 1 satisfies 1550mm≤L4≤1950mm.

[0053] In this document, the maximum size L4 of the driver compartment 1 can be the maximum size of the projection of the driver compartment 1 on the Y0 plane measured along the X direction; similarly, the distance L9 between the center point of the driver seat 4 and the center point of the wheel opening 121 can be the distance between the projections of the center point of the driver seat 4 and the center point of the wheel opening 121 on the Y0 plane measured along the X direction.

[0054] The driving compartment 1 refers to an external structure for forming the cab 10, and includes a front portion 11 and side portions 12, which refer to portions on the left and right sides of the cab 10.

[0055] A wheel opening 121 is arranged on the side portion 12 of the driving compartment 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 20. The wheel opening 121 is arranged in cooperation with and concentrically with the front wheel 20.

[0056] In the existing cab design, only the driving comfort of the driver (or passenger) in a sitting position in the cab (for example, the human-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. Rarely is the position of the front wheel 20 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 cabs with limited cab length or layout space.

[0057] Taking a light truck as an example, regulations require that the overall length of such vehicles should not exceed 6m, 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 of the truck and the product competitiveness.

[0058] Therefore, for cabs with limited cab length or layout space, the inventor needs to make a lot of efforts to study how to arrange the cab to meet the driving comfort and the convenience of getting in and out of the vehicle at the same time. However, by including the position of the front wheel 20 in the evaluation system of the convenience of the driver (or passenger) getting in and out of the vehicle, the present application can conveniently and effectively solve the above problems, solve the problem of human-machine arrangement for cabs with limited cab length or layout space, and meet the driving comfort and the convenience of getting in and out of the vehicle at the same time, and reserve design space for subsequent cab design (for example, low-drag design).

[0059] Further, including the position of the front wheel 20 in the evaluation index of the convenience of the driver (or passenger) getting in and out of the vehicle is not only particularly important for cabs with limited cab length or layout space, but also very important for cabs with low-drag streamlined design.

[0060] For example, for a light truck, to a certain extent, the smaller the wind resistance means the more inclined the windshield in front of the cab 10 is, so in order to ensure that the driver will not be affected by the driving comfort due to the collision with the windshield that is too inclined, 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 the increase of the length of the cab 10, which is not conducive to improving the load capacity and the competitiveness of the whole vehicle product. Therefore, it is necessary to find the minimum size requirement that can meet the man-machine arrangement requirements of the cab 10 (especially the convenience requirements of getting on and off the vehicle), so as to reserve sufficient design space for other design requirements of the cab 10 (such as the design of the length of the cab, the design of low wind resistance, etc.).

[0061] Therefore, for the cab with limited length or limited arrangement space, the inventor needs to make a lot of efforts to study how to arrange the man-machine of the cab to balance the driving comfort, the convenience of getting on and off the vehicle, and the low wind resistance performance, so as to further improve the load capacity of the truck and reduce the energy consumption, and improve the competitiveness of the whole vehicle product. Based on this, in the cab 10 in the embodiment of the present application, since the driver's sitting posture is determined by the driver's seat 4, by taking the position of the front wheel 20 as a parameter into the evaluation system of the convenience of getting on and off the vehicle, and more specifically, by positioning the driver's seat 4 through the position of the center point of the wheel opening 121, a better solution of the man-machine arrangement of the cab that can meet the convenience of getting on and off the vehicle can be obtained, which is particularly important for trucks, especially light trucks, and is also a necessary condition for cabs with limited length and / or low wind resistance. In addition, compared with existing light trucks, the position of the driver's sitting posture relative to the whole vehicle can be innovated.

[0062] In one embodiment of the present application, by making the maximum size L4 of the driver's compartment 1 in the X direction satisfy: 1550mm≤L4≤1950mm, and making the distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121 satisfy: 365mm≤L10≤765mm, the driver's sitting posture can be moved backward, 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 part 11, so that the front part 11 of the cab 10 can reserve design space for forming a streamlined structure, realizing the design of a low wind resistance cab 10, and thus the wind resistance coefficient can be reduced, the energy consumption can be reduced, the cruising range of the cab 10 can be improved, when the cab 10 is a fuel vehicle, the fuel economy of the cab 10 can be improved, and when the cab 10 is an electric vehicle or a hybrid vehicle, the power consumption of the cab 10 can be reduced, while ensuring getting on and off the vehicle.

[0063] It can be understood that when the sitting posture of the driver in the cab 10 is designed based on the center point of the driver's seat 4 relative to the center point of the wheel opening 121, other parts of the cab 10 can be adjusted in linkage with the driver's seat 4 to achieve overall design of the cab 10.

[0064] The maximum dimension of the driver's compartment 1 along the X direction refers to the distance from the front end of the driver's compartment 1 along the X direction to the rear end of the driver's compartment 1, and can also be the size of the projection of the driver's compartment 1 on the Y0 plane along the X direction.

[0065] It can be understood that the larger the maximum dimension L4 of the driver's compartment 1, the more sufficient the space for man-machine arrangement in the cab 10, but the size of the cargo box is reduced, and vice versa, the smaller the maximum dimension L4 of the driver's compartment 1, the larger the size reserved for the cargo box, but the space for man-machine arrangement in the cab is more limited.

[0066] Therefore, the length of the cab 10 is directly related to the product competitiveness of the related whole vehicle product and the man-machine arrangement in the cab.

[0067] In the present application, by making the maximum dimension L4 of the driver's compartment 1 along the X direction ≥1550mm, the driving requirements of the light truck can be better met, and by making the maximum dimension L4 of the driver's compartment 1 ≤1950mm, the space occupied by the cab 10 can be reduced and the cargo box space can be increased under the condition that the size of the light truck is constant, so that the cargo carrying requirements of the light truck can be better met.

[0068] In addition, for the cab with limited cab length or arrangement space, the comfort and convenience of getting on and off the vehicle in the cab are more prominent.

[0069] It can be understood that the larger the distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121, the farther the driver's position is from the center of the front wheel 20, and at the same time, the longer the length of the cab 10, which is beneficial to the convenience of getting on and off the vehicle in the cab 10, but is not conducive to increasing the load capacity; on the contrary, the smaller the distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121, the closer the driver's position is to the center of the front wheel 20 to a certain extent, resulting in a reduction in the range of the door opening for the driver to get on and off the vehicle, which is not conducive to improving the convenience of getting on and off the vehicle, but the larger the distance between the driver's position and the center of the front wheel 20 means that the length of the cab can be shortened, and under the condition that the length of the related whole vehicle is constant, a longer cargo box length can be obtained, which is beneficial to increasing the load capacity and improving the product competitiveness.

[0070] For the cab 10 in the above embodiments, by making the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 ≥365mm, the driving position can be moved backward to reserve sufficient space in the front portion 11 to form a streamlined structure, and the driver's sitting position is moved to the rear side of the center point of the wheel opening 121, so that sufficient space can be formed on the rear side to facilitate the driver to get on and off. And by making the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 ≤765mm, the driving position can not be moved too much backward, so that the driver's cabin space can be reduced to increase the cargo box space under the condition of a certain size of the light truck, thereby improving the load capacity of the light truck.

[0071] Therefore, by making L10 in the embodiments of the present application satisfy: 365mm≤L10≤765mm, a better human-machine arrangement can be achieved under the limited length of the cab 10 to meet the driving comfort and the convenience of getting on and off, while sufficient design space is reserved for other cab 10 designs (for example, low wind resistance design) to further realize energy consumption reduction.

[0072] In some alternative embodiments, the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 satisfies: 415mm≤L10≤715mm. Further alternatively, the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 satisfies: 465mm≤L10≤665mm. Further alternatively, the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 satisfies: 515mm≤L10≤615mm.

[0073] In a specific embodiment of the present application, L10=525mm, 565mm or 605mm, which can reserve moderate space at the front portion 11 to allow the front portion 11 of the cab 10 to form a streamlined structure to realize a low wind resistance cab 10 design. And also, the convenience of getting on and off can be improved while reducing the driver's cabin space, thereby improving the performance of the cab 10.

[0074] In some alternative embodiments, the driver compartment 1 further comprises a rear panel 13 which is spaced apart from the front portion 11, and is disposed between and connected to the side portions 12 on both sides of the front portion 11. In the X direction, the driver seat 4 is disposed between the front portion 11 and the rear panel 13 with a gap therebetween.

[0075] That is, the last end position of the driver compartment 1 in the X direction can be adjusted according to the driver seat 4, and the driver seat 4 needs to have a predetermined gap in the X direction from the last end to improve the comfort of the driver seat 4.

[0076] In some optional embodiments, the maximum dimension L4 of the cab body 1 satisfies 1600mm≤L4≤1900mm. Further optionally, the maximum dimension L4 of the cab body 1 satisfies 1650mm≤L4≤1850mm. Further optionally, the maximum dimension L4 of the cab body 1 satisfies 1700mm≤L4≤1800mm.

[0077] In one specific embodiment of the present application, L4=1750mm, which can make the space of the cab 10 moderate, and take into account the driving requirements and the cargo carrying requirements, and improve the performance of the light truck.

[0078] Please refer to Figures 2 to 4 , Figure 4 A side view of the cab 10 provided by some embodiments of the present application is shown. In some optional embodiments, the side portion 12 is provided with a door 2, 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 respectively, 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. Among them, the driving seat 4 is at least partially located in the step area S2 in the orthographic projection of the side portion 12.

[0079] Among them, the side portion 12 is provided with a door hole 122 for the driver to get on and off the vehicle, and the door 2 is rotatably connected to the side portion 12 and covers the door hole 122, or the door 2 can also be slidably connected to the side portion 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.

[0080] By locating the front edge and the rear edge of the door 2 on both sides of the wheel opening 121 respectively, the step area S2 can be formed between the rear edge of the door 2 and the rear edge of the wheel opening 121. And by locating the driving seat 4 at least partially in the step area S2 in the orthographic projection of the side portion 12, the driver's sitting position can correspond to the step area S2, so as to facilitate the driver to get on and off the vehicle through the step area S2, and improve the convenience of getting on and off the vehicle.

[0081] In some optional embodiments, in the X direction, the distance between the center point of the wheel opening 121 and the rear edge of the door 2 is L1, and the distance between the front edge of the door 2 and the rear edge of the door 2 is L2. Among them, the value of L1 satisfies 630mm≤L1≤1030mm, and the value of the ratio of L1 to L2 satisfies 0.65≤L1 / L2≤0.95.

[0082] The distance L2 between the front edge and the rear edge of the door can be the distance measured along the X direction of the projections of the front edge and the rear edge of the door on the Y0 plane respectively. Similarly, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 can be the distance measured along the X direction of the projections of the rear edge of the door 2 and the wheel opening 121 on the Y0 plane respectively.

[0083] Generally, the side part 12 is provided with a door opening 122 for the driver to get on and off the vehicle, and the door 2 is rotatably connected to the side part 12 and covers the door opening 122, or the door 2 can also be slidably connected to the side part 12 and covers the door opening 122. The door 2 can be a special-shaped structure, and the front edge of the door 2 refers to the most forward edge along the X direction, and the rear edge of the door 2 refers to the last edge along the X direction.

[0084] The most forward edge of the door 2 corresponds to the most forward edge of the door opening 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 to be able to fully open and utilize the door opening of the door 2 to improve the convenience of the driver getting on and off the vehicle.

[0085] It can be understood that the greater the distance between the rear edge of the door 2 and the center point of the wheel opening 121, the better the convenience of the driver getting on and off the vehicle, but it also causes 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 point of the wheel opening 121, the smaller the length of the cab under the condition that the overall length of the vehicle is constant, and the larger the cargo box can be designed, but the convenience of the driver getting on and off the vehicle is poorer, and the space left for wind resistance design is smaller, making it difficult to achieve low wind resistance design.

[0086] By setting the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 to be greater than or equal to 630 mm, the space of the step area S2 can be increased to improve the convenience of the driver getting on and off the vehicle, and by setting the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 to be less than or equal to 1030 mm, the space of the cab 10 can be controlled within a reasonable range, and the cargo box space can be increased under the condition that the overall length of the vehicle is constant.

[0087] Furthermore, by setting 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 to satisfy 0.65≤a≤0.95, sufficient space can be reserved at the front part 11 to form a streamlined structure at the front part 11 of the cab 10, thereby achieving low wind resistance cab 10 design, and further being able to reduce the wind resistance coefficient while ensuring getting on and off the vehicle, reduce energy consumption, and improve the cruising range of the cab 10. On the other hand, by setting L1 to be relatively large, a more generous space for the driver to get on the vehicle can be provided, which is conducive to improving the convenience of getting on and off the vehicle.

[0088] 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 point of the wheel opening 121 too much, resulting in less space for getting on and off behind the front wheels, affecting the convenience of getting on and off, and in addition, the door 2 being moved forward relative to the center of the front wheels 20 too much also 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 point of the wheel opening 121 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 making it difficult to meet the transportation requirements of light trucks.

[0089] 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.

[0090] In some optional embodiments, the value range of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 satisfies 680mm≤L1≤980mm, further optionally, the value range of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 satisfies 780mm≤L1≤930mm, further optionally, the value range of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 satisfies 780mm≤L1≤880mm.

[0091] 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 point of the wheel opening 121 to the distance between the front edge and the rear edge of the door 2 of the cab 10 is moderate, which can reduce the size of the cab 10 while meeting the needs of the driver getting on and off, and at the same time enable the front part 11 of the cab 10 to form a streamlined structure, reduce the wind resistance of the cab 10 and reduce energy consumption.

[0092] In one specific embodiment of the present application, L1=833mm, L2=1048mm, a=L1 / L2=0.795, the relative positions of the front edge and the rear edge of the door 2 to the center point of the wheel opening 121 in the X direction can meet the space and getting on and off requirements of the cab 10, and at the same time also reserve design space for the front part 11 of the cab 10 to form a streamlined structure, which is conducive to reducing the wind resistance of the cab 10 and reducing energy consumption.

[0093] Referring to Figures 2 to 5 , Figure 5 A side view of the cab 10 is shown. In some alternative embodiments, the cab 10 further comprises a brake pedal 3 arranged in the driver's cabin and connected to the front portion 11, and in a non-braking state of the brake pedal 3, a center point of the brake pedal 3 is located on a side of a center point of the wheel opening 121 towards the front portion 11 and the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121 satisfies 10mm≤L9≤410mm.

[0094] The distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121 can be the distance between the projection point of the center point of the brake pedal 3 on the Y0 plane and the projection point of the center point of the wheel opening 121 on the Y0 plane measured along the X direction.

[0095] That is, the brake pedal 3 can be designed to match the position of the driver's seat 4. Compared with the cab 10 of the existing light truck, by moving the brake pedal 3 backward, sufficient space can be reserved for the front portion 11 of the cab 10 in the limited driving length, so that the front portion 11 of the cab 10 forms a streamlined structure, realizes the design of a low-drag cab 10, and thus can reduce the wind resistance coefficient while ensuring getting on and off the vehicle, reduce energy consumption, and improve the cruising range of the cab 10.

[0096] It can be understood that the greater the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121, the closer the driver's seat position to the front wheel, and at this time the size of the step area for the driver to get on and off the vehicle will be reduced, which is not conducive to the convenience of the driver getting on and off the vehicle. On the contrary, the smaller the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121, the farther the driver's seat position from the front wheel, and at this time the size of the step area for the driver to get on and off the vehicle will be increased, which is conducive to the convenience of the driver getting on and off the vehicle, but at the same time it will increase the overall length of the cab, which is not conducive to improving the load capacity of the vehicle.

[0097] Specifically, by arranging the center point of the brake pedal 3 on the side of the center point of the wheel opening 121 towards the front portion 11 and the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121≤410mm in a non-braking state of the brake pedal 3, the driving position can be moved backward by a sufficient distance to increase the size of the step area S2 along the X direction, facilitating the driver to get on and off the vehicle. And by arranging the center point of the brake pedal 3 on the side of the center point of the wheel opening 121 towards the front portion 11 and the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121≥10mm, the driving position can not be moved too much, so as to reduce the space of the driver's cabin, increase the cargo box space under the condition that the size of the light truck is constant, and improve the load capacity of the light truck.

[0098] In some optional embodiments, when the brake pedal 3 is in the non-braking state, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 is in the range of 60mm≤L9≤360mm, and further optionally, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 is in the range of 110mm≤L9≤310mm, and the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 is in the range of 110mm≤L9≤310mm.

[0099] In a specific embodiment of the present application, L9=180mm, 210mm or 250mm, which can reserve design space for the streamlined structure of the front portion 11 under the limited cab length, thereby facilitating the design of the low-drag cab 10. Also, it can improve the convenience of getting on and off while reducing the driving space, and improve the performance of the cab 10.

[0100] Please refer to Figures 2 to 6 , Figure 6 A side view of the cab 10 provided by some embodiments of the present application is shown. In some optional embodiments, the cab 10 further comprises a steering mechanism 5, which comprises a steering wheel 51 arranged in the driver's cabin. In the X direction, the distance between the center point of the steering wheel 51 and the center point of the wheel opening 121 is L11, and the value 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.

[0101] Wherein, L11 takes a negative value when the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 close to the front portion 11, and L11 takes a positive value when the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 away from the front portion 11.

[0102] That is, the steering wheel 51 can be designed to match the position of the driver's seat 4. Compared with the existing cab 10 of a light truck, by moving the steering wheel 51 backward, sufficient space can be reserved for the front portion 11 of the cab 10 under the limited cab length, so that the front portion 11 of the cab 10 can form a streamlined structure, realize the design of the low-drag cab 10, and thereby ensure getting on and off while reducing the wind resistance coefficient, reducing energy consumption, and improving the cruising range of the cab 10.

[0103] For the cab 10 in the above embodiment, by making the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 ≥-65mm, the driving position can be moved to the rear, so as to form a streamlined structure at the front portion 11, and the driver's sitting position is moved to the rear of the center point of the wheel opening 121, so as to form sufficient space at the rear for the driver to get on and off the vehicle. 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 driving position can not be moved too much to the rear, so as to reduce the cab space, increase the cargo box space under the condition of the size of the light truck being constant, and improve the load capacity of the light truck.

[0104] In some alternative embodiments, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies: -15mm≤L11≤285mm. Further alternatively, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies: 35mm≤L11≤235mm. Further alternatively, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies: 85mm≤L11≤185mm.

[0105] In a specific embodiment of the present application, L11=105mm, 135mm or 155mm, in which case, the compact arrangement of the cab 10 and the front wheel 20 can be achieved, so that the front portion 11 can have appropriate space to form a streamlined structure, so as to realize the design of the low wind resistance cab 10. And the cab space can be reduced while improving the convenience of getting on and off the vehicle, and the performance of the cab 10 is improved.

[0106] Please refer to Figures 2 to 8 , Figure 7 Fig. 1 shows a structural schematic diagram of the steering mechanism 5 provided by some embodiments of the present application, Figure 8 Fig. 2 shows a top view of the chassis 100 provided by some embodiments of the present application.

[0107] In some alternative embodiments, the steering mechanism 5 further comprises a steering shaft 52 and a steering shaft support 53, the steering shaft 52 is fixedly installed on the cab body 1 through the steering shaft support 53, and the steering wheel 51 is in transmission connection with the steering shaft 52.

[0108] The steering mechanism 5 further comprises a steering pull rod 54, a steering gear 55, a steering rocker arm 56 and a steering bent arm, the steering gear 55 is fixedly arranged on the frame and located below the cab 10, the first end of the steering pull rod 54 is in transmission connection with the steering gear 55 through the steering rocker arm 56, and the second end of the steering pull rod 54 is connected to the hub of the front wheel 20 through the steering bent arm. The length L13 of the steering pull rod 54 along the X direction satisfies: 440mm≤L13≤540mm.

[0109] Compared with the existing light truck, the light truck in the embodiment of the application adjusts the relative position relationship of the center points of the steering wheel 51 and the wheel opening 121, that is, the center point of the wheel opening 121 is arranged forward in the X direction relative to the steering wheel 51 of the existing light truck. Since the end of the steering pull rod 54 is connected to the front wheel 20 hub, on the basis of the center point of the wheel opening 121 being moved forward, the front wheel 20 hub can be moved forward, so that the length L13 of the steering pull rod 54 in the X direction is reduced, 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.

[0110] In one embodiment, the length L13 of the steering pull rod 54 in the X direction is 470mm, 490mm or 510mm.

[0111] It can be understood that, while the length L13 of the steering pull rod 54 in the X direction is adjusted accordingly, the length dimension L8 of the front suspension of the cab 10 is also further compressed.

[0112] In some alternative embodiments, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body 1 in the X direction satisfies: 0.38≤L8 / L4≤0.48.

[0113] It can be understood that, when the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body 1 is less than 0.38, the length of the cab 10 in the X direction is too long under the condition that the length of the light truck is constant, resulting in a smaller space of the cargo box. When the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body 1 is greater than 0.48, the length of the cab 10 in the X direction is too short, resulting in poor convenience for getting on and off the vehicle.

[0114] In addition, it can be understood that the smaller the front suspension size is, the smaller the front compartment arrangement space is, but the better the passability of the corresponding vehicle is, and the larger the man-machine space left for the cab is, which is more conducive to improving the driving comfort and the convenience of getting on and off the vehicle. On the contrary, the larger the front suspension size is, the worse the passability of the corresponding vehicle is, and the smaller the man-machine space left for the cab is, which is not conducive to the driver getting on and off the vehicle, but is conducive to the front compartment arrangement space.

[0115] Therefore, by satisfying the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body 1 in the X direction: 0.38≤L8 / L4≤0.48, the cab 10 in the embodiment of the application can reduce the length of the front suspension, reduce the cockpit space and increase the space of the cargo box under the condition that the size of the light truck is the same, so as to better meet the cargo carrying demand of the light truck. At the same time, the reduced cockpit space can also meet the demand of the driver getting on and off the vehicle.

[0116] Further optionally, 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: 0.40≤L8 / L4≤0.45. For example, L8 / L4=0.40, L8 / L4=0.42 or L8 / L4=0.45, the above settings can make the length dimension of the front overhang in the X direction moderate, so as to take into account the load demand of the light truck and the demand of the driver getting on and off the vehicle.

[0117] In some optional embodiments, in the X direction, the length dimension L8 of the front overhang of the cab 10 satisfies: 640mm≤L8≤840mm, the length dimension of the front overhang is: the distance from the frontmost end of the cab 10 to the center point of the wheel opening 121 in the X direction. Further optionally, in the X direction, the length dimension L8 of the front overhang satisfies: 690mm≤L8≤790mm.

[0118] In a specific embodiment of the present application, L8=700mm, 720mm, 740mm or 760mm.

[0119] It can be understood that, under the condition that the size of the chassis 100 in the X direction is certain, 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 also be redistributed.

[0120] In some optional embodiments, the wheelbase L14 satisfies: 3360mm≤L14≤4000mm.

[0121] The wheelbase dimension L14 of the chassis 100 is: the distance from the center point of the front wheel 20 to the center point of the rear wheel 30 in the X direction. Wherein, the wheelbase L14 can be the distance measured in the X direction by the projection of the center point of the front wheel 20 and the center point of the rear wheel 30 on the Y0 plane.

[0122] 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 in the X direction. By making the wheelbase L14≥3360mm, the arrangeable space of the power battery can be increased, so as to better meet the large power demand. And by making the wheelbase L14≤4000mm, space can be reserved for the setting of other functional systems on the chassis 100, so as to meet the functional requirements of the chassis 100 and improve the performance of the chassis 100.

[0123] In some embodiments, L14=3450mm, 3750mm or 3950mm.

[0124] In a specific embodiment of the present application, L8=740mm and L14=3750mm, at this time the power battery power can be expanded from 100kWh to 120kWh.

[0125] Please refer toFigure 9 , Figure 9 A top view of the cab 10 is shown. In some alternative embodiments, the maximum dimension of the driver's compartment 1 in the Y direction is L7, and L7 satisfies: 2120mm≤L7≤2220mm.

[0126] The maximum dimension of the driver's compartment 1 in the Y direction refers to the distance between the leftmost and rightmost points of the projection of the driver's compartment 1 on the X0 plane in the Y direction, i.e., the distance between the two side portions 12 of the driver's compartment 1 in the Y direction, except for the rearview mirror and the blind mirror of the cab 10. The maximum dimension of the driver's compartment 1 in the Y direction is related to the dimension of the cargo box in the Y direction, and can be equal to the dimension of the cargo box in the Y direction to reduce wind resistance.

[0127] In one specific embodiment of the present application, the dimension of the cargo box in the Y direction is 2170mm, and thus the maximum dimension L7 of the driver's compartment 1 is 2170mm, so that the surface of the side portion 12 of the driver's compartment 1 is flush with the cargo box to reduce the wind resistance coefficient.

[0128] Referring to Figures 2 to 12 , Figure 10 A structural schematic view of the cab 10 is shown, Figure 11 A side view of the cab 10 is shown, Figure 12 A schematic view of the measurement of the inclination angle is shown.

[0129] In some alternative embodiments, the front portion 11 includes a windshield portion 111, and the windshield portion 111 is inclined relative to the vertical plane by an inclination angle a1, wherein a1 satisfies: 15°≤a1≤25°.

[0130] The inclination angle a1 of the windshield portion 111 relative to the vertical plane can be represented by the angle between the inclined line of the windshield portion 111 and the vertical line. The inclined line of the windshield portion 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 portion 111 in the Y direction, and the Y direction being the Y direction of the vehicle coordinate system, and the second intersection point being the intersection point formed by the 457mm circular arc with the first intersection point and the windshield portion 111.

[0131] It can be understood that the greater the inclination angle a1 of the windshield portion 111 relative to the vertical plane, the smaller the positive pressure on the cab, which is conducive to reducing the wind resistance coefficient, but at the same time, the driver's position will be forced to move backward to avoid affecting the driving field of view, operability, etc., and the driver's position moving backward will inevitably increase 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 a1 of the windshield portion 111 relative to the vertical plane, the more conducive to human-machine arrangement and reducing the length of the cab, but at this time, the positive pressure on the cab will increase, thereby increasing the wind resistance, which is not conducive to the endurance mileage of the whole vehicle.

[0132] In the present application, by making the inclination angle a1 of the windshield portion 111 relative to the vertical plane ≥15°, the windshield portion 111 can be inclined relative to the vertical plane at a sufficient angle to reduce the positive pressure area, reduce the wind resistance coefficient, and reduce the energy consumption of the cab 10. By making the inclination angle a1 of the windshield portion 111 relative to the vertical plane ≤25°, the windshield portion 111 can be inclined relative to the vertical plane without being too large, so that the interior space of the cab can meet the demand, thereby improving the comfort of the driver and the convenience of getting in and out of the vehicle.

[0133] In one specific embodiment of the present application, a1 = 18°, 20° or 23° to balance the demand for reducing wind resistance and reducing the space of the cab, and improve the performance of the cab 10.

[0134] In some optional embodiments, the front portion 11 further comprises a first zone portion 112 and a second zone portion 113 arranged in the Z direction, and the second zone portion 113 is located on the side of the first zone portion 112 towards the windshield portion 111 and connected with the windshield portion 111. In the Z direction, the second zone portion 113 is arranged inclined relative to the vertical plane with an inclination angle a2, and the difference between the inclination angle a1 of the windshield portion 111 relative to the vertical plane and the inclination angle a2 of the second zone portion 113 relative to the vertical plane satisfies: 0°≤a1-a2≤5°.

[0135] The first zone portion 112 can be a region provided with a front bumper, and the second zone portion 113 can be a region provided with a front panel.

[0136] Similarly to the windshield portion 111, the inclination angle a2 of the second zone portion 113 relative to the vertical plane can be represented by the angle between the inclined line of the second zone portion 113 and the vertical line. The inclined line of the second zone portion 113 refers to the line connecting the third intersection point and the fourth intersection point, the third intersection point being the middle point of the lower edge of the second zone portion 113 in the Y direction, and the fourth intersection point being the intersection point formed by the third intersection point making a 457mm circular arc with the second zone portion 113.

[0137] Since the smaller 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, 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 setting 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.

[0138] It can be understood that since the cab 10 also includes 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 inclination angle α2 of the second section 113 relative to the vertical plane cannot be set too large, i.e. 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, which can take into account the setting requirements of the windshield and the functional structures inside the cab 10.

[0139] Please refer to Figures 2 to 13 , Figure 13 A diagram of the inclination angle of the first section according to some embodiments of the present application is shown. In some alternative 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°.

[0140] 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 larger the inclination angle of the first section 112, the smaller the windward area of the front part of the cab, which is beneficial for reducing wind resistance, but has a limited effect on the space for the man-machine arrangement (e.g. brake pedal, steering wheel, etc.) inside 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 portion 111, etc. in the X direction can be moved forward, thereby increasing the interior space of the cab, facilitating the setting of functional components inside the cab 10, and improving the comfort of the driver and the convenience of getting in and out of the vehicle.

[0141] 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 inside the cab, and facilitate the setting of the front bumper, thereby improving the anti-collision capability of the cab 10.

[0142] In some optional embodiments, the maximum dimension of the first section 112 along the Z direction is L5, and the value of L5 satisfies 320mm≤L5≤420mm. The maximum dimension of the first section 112 along the Z direction can be the dimension of the projection of the first section 112 on the Y0 plane along the Z direction.

[0143] Since the first section 112 is usually formed by the front bumper, the dimension of the first section 112 along the Z direction can be represented by the distance from the lowermost end of the front bumper to the fifth intersection point, which is the uppermost end of the intermediate position of the front bumper along the Y direction.

[0144] By making the maximum dimension of the first section 112 along the Z direction L5≥320mm, the appearance of the cab 10 and the height of the license plate that can be provided can be improved. Since the inclination angle α3 of the first section 112 relative to the vertical plane is smaller than the inclination angle α2 of the second section 113 relative to the vertical plane, by making the maximum dimension of the first section 112 along the Z direction L5≤420mm, 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 portion 11 of the cab 10 and reduce the wind resistance coefficient.

[0145] In one specific embodiment of the present application, L5=340mm, 370mm or 400mm, so as to balance the reduction of the wind resistance coefficient and the setting requirements of the functional structures inside the cab 10.

[0146] 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 of L6 satisfies 220mm≤L6≤320mm.

[0147] The lower edge of the front wheel 20 is the ground line when the cab 10 is in an empty state, so the distance between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is the distance from the lowermost edge of the front bumper to the ground line along the Z direction.

[0148] 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 becomes larger, and the wind resistance also becomes larger, 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 becomes worse.

[0149] 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 ≥ 220 mm, the ground clearance of the front bumper in the Z direction can be increased, the risk of the cab 10 colliding with the ground can be reduced, and the cab 10 can be driven on various road surfaces. Moreover, 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 ≤ 320 mm, the ground clearance can not be 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.

[0150] In some alternative 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 alternatively, 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.

[0151] 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.

[0152] Please refer to Figure 14 , Figure 14 FIG. 6 shows a side view of the cab 10 according to some embodiments of the present application.

[0153] In some alternative embodiments, the front portion 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 with respect to the vertical plane and the inclination angle is α4, which is in the range of 25° ≤ α4 ≤ 40°.

[0154] The third section 114 refers to the section above the windshield in the Z direction. The third section 114 can be integrally provided with the first section 112 and the second section 113 and serve as the roof of the cab 10, or the third section 114 can be separately provided and form a fairing.

[0155] Similarly to the windshield section 111, the inclination angle α4 of the third section 114 with respect 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 is the middle point of the lower edge of the third section 112 in the Y direction, and the seventh intersection point is the intersection point formed by the 457 mm arc with the sixth intersection point and the third section 114.

[0156] By making the third section 114 inclined to the vertical surface at an angle α4≥25°, the third section 114 can be inclined to the vertical surface at a sufficient angle to reduce the wind resistance coefficient and reduce the energy consumption of the cab 10. By making the third section 114 inclined to the vertical surface at an angle α4≤40°, the third section 114 can be inclined to the vertical surface at an angle that is not too large, 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.

[0157] In one embodiment of the present application, α4=30°, 33°, 35°, or 38°, to balance the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0158] Referring to Figures 1 to 14 The cab 10 provided by the embodiment of the present application can include a cab body 1 and a door 2. The cab body 1 includes a front portion 11 and side portions 12 located on both sides of the front portion 11. The side portions 12 are provided with wheel openings 121, which are used to cooperate with and are concentrically arranged with the front wheels 20.

[0159] In the X direction, the maximum size of the cab body 1 is L4=1750mm, and the length of the front suspension is L8=740mm.

[0160] 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, 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, 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=210mm. And / or, the cab 10 further includes 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=565mm. And / or, the cab 10 further includes 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=135mm.

[0161] Further, the front part 11 comprises a windshield part 111 which is arranged to be inclined to the vertical plane by an angle a1 = 20°, and further comprises a first zone part 112, a second zone part 113 and a third zone part 114 arranged in the Z direction, the difference between the angle a1 of the windshield part 111 to the vertical plane and the angle a2 of the second zone part 113 to the vertical plane satisfies: 0°≤a1-a2≤5°, the angle a3 = 0° of the first zone part 112 to the vertical plane, and the angle a4 = 33° of the third zone part 114 to the vertical plane.

[0162] Further, the minimum size of the first zone part 112 in the Z direction is L5 = 370mm, and the distance between the lowermost edge of the first zone part 112 and the lower edge of the front wheel 20 is L6 = 270mm.

[0163] 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 flat-nosed cab is about 0.500, while the wind resistance coefficient of the light truck with the cab of the above-mentioned embodiment of the present application is about 0.300, which can reduce the energy consumption of the traditional light truck by about 20%.

[0164] Therefore, according to the cab 10, the chassis 100 and the light truck in the embodiment of the present application, since it comprises the cab 10 in the above-mentioned embodiment, it also has the advantages of small cabin space, high convenience of getting on and off, low wind resistance coefficient, low energy consumption and the like, and is more convenient for popularization and application.

[0165] The above is only a specific embodiment of the present 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-mentioned system, module and unit can refer to the corresponding process in the foregoing method embodiment, which will not be described here. It should be understood that the protection scope of the present application is not limited to this, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A driver's cab, characterized in that, include: A driver's cab includes a driver's compartment, the driver's cab includes a front part and side parts located on both sides of the front part, the side parts are provided with wheel openings, the wheel openings are used to cooperate with the front wheels and are concentrically arranged with the front wheels; A driver's seat, disposed in the driver's cabin and connected to the driver's compartment; Along the X direction, the center point of the driver's seat is located on the side of the wheel well away from the front and the distance between the center point of the wheel well and the center point of the wheel well is L10. The distance between the center point of the driver's seat and the center point of the wheel well is L10. The value of L10 is 365mm≤L10≤765mm. Along the X direction, the maximum dimension of the driver's compartment is L4, and the value of L4 is within the range of 1550mm≤L4≤1950mm.

2. The driver's cab according to claim 1, characterized in that, The distance L10 between the center point of the driver's seat and the center point of the wheel well shall be 415mm≤L10≤715mm.

3. The driver's cab according to claim 1, characterized in that, The side is provided with a door. In the X direction, the front edge and the rear edge of the door are respectively located on both sides of the wheel well. A wheel cover area is formed between the front edge of the door and the rear edge of the wheel well, and a step area is formed between the rear edge of the door and the rear edge of the wheel well. The driver's seat's orthogonal projection on the side is at least partially located in the step area.

4. The driver's cab according to claim 3, characterized in that, In the X direction, the distance between the center point of the wheel well and the rear edge of the door is L1, and the distance between the front edge of the door and the rear edge of the door is L2. The value of L1 is 630mm≤L1≤1030mm, and the value of the ratio a of L1 to L2 is 0.65≤a≤0.

95.

5. The driver's cab according to claim 1, characterized in that, The driver's compartment also includes a rear panel, which is spaced apart from the front part. The rear panel is positioned between and connected to the side parts on both sides of the front part. Along the X direction, the driver's seat is positioned between the front part and the rear panel, and a gap is provided between the driver's seat and the rear panel.

6. The driver's cab according to claim 1, characterized in that, Along the X direction, the maximum dimension L4 of the driver's compartment is within the range of 1600mm≤L4≤1900mm.

7. The driver's cab according to any one of claims 2 to 6, characterized in that, The front part includes a windshield section, which is inclined relative to the vertical plane at an angle of α1, wherein the value of α1 is within the range of 15°≤α1≤25°.

8. The driver's cab according to claim 7, characterized in that, The front portion includes a first section and a second section arranged in the Z direction, the second section being located on the side of the first section facing the windshield and connected to the windshield. Along the Z direction, the second section is inclined relative to the vertical plane at an angle of α2. The difference between the inclination angle α1 of the windshield relative to the vertical plane and the inclination angle α2 of the second section relative to the vertical plane satisfies: 0°≤α1-α2≤5°.

9. The driver's cab according to claim 8, characterized in that, The tilt angle of the first region relative to the vertical plane is smaller than the tilt angle of the second region relative to the vertical plane, and the tilt angle of the first region relative to the vertical plane is α3, where 0°≤α3≤10°.

10. The cab according to claim 8, characterized in that, The maximum dimension of the first region along the Z direction is L5, and the value of L5 is within the range of 320mm≤L5≤420mm.

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

12. A chassis, characterized in that, include: The driver's cab as described in any one of claims 1-11.

13. A light truck, characterized in that, include: The driver's cab as described in any one of claims 1-11; The chassis has front wheels and rear wheels, with the center of the front wheels coinciding with the center of the wheel well of the cab; The cargo box is mounted on the chassis.

14. The light truck according to claim 13, characterized in that, The front of the cab is provided with a front bumper. Along the Z direction, the distance between the lowest edge of the front bumper and the lowest edge of the front wheel is L6. The value of L6 is in the range of 220mm≤L6≤320mm.

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