Cab, chassis and light truck

Abstract

The utility model relates to a cab, a chassis and a light truck, the cab comprises a driving compartment and a truck door, the driving compartment comprises a front portion and side portions located on the two sides of the front portion, wheel openings are formed in the side portions and used for being matched with front wheels, the wheel openings and the front wheels are concentrically arranged, and the truck door is connected to the side portions and can be opened relative to the side portions; the vehicle door comprises a front edge and a rear edge which are arranged in the X direction, in the X direction, the front edge and the rear edge of the vehicle door are located on the two sides of the center point of the wheel opening respectively, in the X direction, the distance between the rear edge and the center point of the wheel opening is L1, the distance between the front edge and the rear edge is L2, and the ratio a of L1 to L2 is larger than or equal to 0.65 and smaller than or equal to 0.95. According to the cab, the man-machine design of the cab can be optimized, the driving comfort and getting-on and getting-off convenience of a driver are improved, furthermore, the driving length requirement and / or the cab wind resistance design requirement can be considered while the man-machine design of the cab is optimized, and the streamline cab with low wind resistance is formed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of driving, in particular 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 related whole vehicle product, therefore, the design of the cab is related to the driving comfort of the driver and the product competitiveness of the related whole vehicle product.

[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 also concerned more and more because it can improve the product competitiveness of the related whole vehicle product. 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, which will inevitably affect the cruising range of the whole vehicle under the condition of the total energy of the whole vehicle (for example, the battery capacity is constant). CONTENT OF THE INVENTION

[0005] The cab, the chassis and the light truck provided by the embodiments of the present application can optimize the man-machine design of the cab in limited space, improve the driving comfort and the getting-on / off convenience of the driver, and further, can take into account the driving length requirement and / or the cab air resistance design requirement while optimizing the man-machine design of the cab, to form a streamlined cab with low air resistance.

[0006] The first aspect of the embodiments of the present application provides a cab, which comprises a cab body and a door, the cab body comprises 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 front wheels and are concentrically arranged with the front wheels, the door is connected to the side parts and is openably arranged relative to the side parts, the door comprises a front edge and a rear edge arranged in an X direction, in the X direction, the front edge and the rear edge of the door are respectively located on both sides of a center point of the wheel opening, and in the X direction, a distance between the rear edge of the door and the center point of the wheel opening is L1, a distance between the front edge and the rear edge is L2, and a ratio a of L1 to L2 satisfies: 0.65≤a≤0.95.

[0007] According to any one of the preceding first aspect embodiments of the present application, in the X direction, the ratio a of the distance L1 between the rear edge of the door and the center point of the wheel opening to the distance L2 between the front edge and the rear edge satisfies: 0.75≤a≤0.85.

[0008] According to any one of the preceding first aspect embodiments of the present application, the distance L1 between the rear edge of the door and the center point of the wheel opening satisfies: 630mm≤L1≤1030mm.

[0009] According to any one of the implementation manners of the first aspect of the application, the distance L1 between the rear edge of the door and the center point of the wheel opening satisfies 680mm≤L1≤980mm.

[0010] According to any one of the implementation manners of the first aspect of the application, the side portion includes a post, and in the X direction, the post is located on the side of the rear edge of the door away from the front portion, and the size of the post is L3, and the value range of L3 satisfies 60mm≤L3≤260mm.

[0011] According to any one of the implementation manners of the first aspect of the application, in the X direction, the maximum size of the driver's cabin body is L4, and the value range of L4 satisfies 1550mm≤L4≤1950mm.

[0012] According to any one of the implementation manners of the first aspect of the application, the front portion includes a windshield portion, and the windshield portion 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°.

[0013] According to any one of the implementation manners of the first aspect of the application, the front portion includes a first region and a second region arranged in the Z direction, and the second region is located on the side of the first region toward the windshield portion and connected with the windshield portion; in the Z direction, the second region is arranged to be inclined 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 region 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 region to the vertical plane is smaller than the inclination angle of the second region to the vertical plane, and the inclination angle of the first region 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 size of the first region 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 portion further includes a third region, and in the Z direction, the third region is located on the side of the windshield portion away from the wheel opening and connected with the windshield portion, and the third region is arranged to be inclined to the vertical plane and the inclination angle is α4, and the value range of α4 satisfies 25°≤α4≤40°.

[0017] The second aspect embodiment of the application provides a chassis including the driver's cabin of the above-mentioned embodiments.

[0018] The third aspect of the present application provides a light truck, comprising a chassis, a cargo box and the cab of the above-mentioned embodiments, 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 above-mentioned embodiments of the third aspect of the present application, the front part of the cab is provided with a front bumper, and the distance between the lowermost edge of the front bumper and the lower edge of the front wheels in the Z direction is L6, and the value range of L6 satisfies 220mm≤L6≤320mm.

[0020] According to the cab provided by the embodiments of the present application, the vehicle door is positioned and designed according to the position of the front wheel center, compared with the existing light truck, the position of the driver's sitting posture relative to the whole vehicle is innovated. Wherein, the front edge and the rear edge of the vehicle door are respectively located on both sides of the center point of the wheel opening, that is, the front edge of the vehicle door is located on the front side of the center point of the wheel opening in the X direction, and the rear edge of the vehicle door is located on the rear side of the center point of the wheel opening in the X direction, and the distance between the rear edge and the center point of the wheel opening is greater than the distance between the front edge and the center point of the wheel opening, so that the driver's sitting posture can be moved backward under the condition that the length of the cab is constant, and the driver gets on the vehicle from the rear side of the front wheels, so as to improve the convenience of getting on and off the vehicle while fully ensuring the driver's field of view and operation space.

[0021] In addition, by making the ratio a of the distance L1 between the rear edge of the vehicle door and the center point of the wheel opening and the distance L2 between the front edge and the rear edge satisfy 0.65≤a≤0.95, enough space is left in the front part to form a streamlined structure in the front part of the cab, so as to realize the design of low wind resistance cab, reduce the wind resistance coefficient and energy consumption while ensuring getting on and off the vehicle.

[0022] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the embodiments can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiment modes of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0023] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0024] Figure 1 is a side view of the chassis provided by an embodiment of the present application;

[0025] Figure 2 shows a side view of a cab omitting a vehicle door provided by some embodiments of the present application;

[0026] Figure 3 shows a side view of a cab provided by some embodiments of the present application;

[0027] Figure 4 A top view of a chassis provided by some embodiments of the present application is shown;

[0028] Figure 5 A side view of a cab provided by some embodiments of the present application is shown;

[0029] Figure 6 A side view of a cab provided by some embodiments of the present application is shown;

[0030] Figure 7 A side view of a cab provided by some embodiments of the present application is shown;

[0031] Figure 8 A top view of a cab provided by some embodiments of the present application is shown;

[0032] Figure 9 A structural schematic view of a cab provided by some embodiments of the present application is shown;

[0033] Figure 10 A side view of a cab provided by some embodiments of the present application is shown;

[0034] Figure 11 A measurement schematic view of a tilt angle provided by some embodiments of the present application is shown;

[0035] Figure 12 A diagram of a tilt angle of a first section provided by some embodiments of the present application is shown;

[0036] Figure 13 A side view of a cab provided by some embodiments of the present application is shown.

[0037] BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 100 - chassis; 10 - cab; 20 - front wheel; 30 - rear wheel;

[0039] 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; 123 - pillar; 2 - door; 3 - brake pedal; 4 - driver seat; 5 - steering mechanism; 51 - steering wheel;

[0040] S1 - wheelhouse section; S2 - step section.

[0041] In the drawings, the same components have the same reference numbers. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0042] 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 present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscurity of the present application; and, the dimensions 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.

[0043] 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.

[0044] Please refer to Figure 1 , Figure 1 A side view of the chassis 100 provided by some embodiments of the present application is shown.

[0045] The embodiments of the present application provide a light truck, which comprises a chassis 100 and a cargo box arranged on the chassis 100.

[0046] 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.

[0047] The chassis 100 includes a chassis 100 with a cab and a chassis 100 without a cab, i.e. the light truck can include a chassis 100 with a cab and a cargo box, or a chassis 100 without a cab, a cargo box and a cab 10.

[0048] 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.

[0049] 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, a light truck) of each of the above embodiments and as a component of the chassis 100 or the related whole vehicle product (for example, a light truck), and of course, can also be produced or sold as an independent component.

[0050] Please refer to Figures 1 to 3 , Figure 2 A side view of the cab 10 omitting the door 2 is shown, Figure 3 A side view of the cab 10 is shown.

[0051] The embodiments of the present application provide a cab 10, which comprises a driver's compartment 1 and a door 2, the driver's 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, which are used to cooperate with and are concentrically arranged with the front wheels 20. The door 2 is connected to the side parts 12 and can be used to open or close the door hole of the door located on the side parts 12, the door 2 comprises a front edge and a rear edge arranged along the X direction, in the X direction, the front edge and the rear edge of the door 2 are respectively located on both sides of the center point of the wheel opening 121, and in the X direction, the distance between the front edge and the rear edge is L2, and the ratio a of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 and the distance L2 between the front edge and the rear edge satisfies: 0.65≤a≤0.95.

[0052] In this document, 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.

[0053] In this document, for example, 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; 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.

[0054] The driver's compartment 1 refers to the external structure for forming the cab 10, and the driver's compartment 1 comprises the front part 11 and the side parts 12, which refer to the parts located on the left and right sides of the cab 10.

[0055] A wheel opening 121 is provided on the side 12 of the cab body 1 close to the chassis 100, the wheel opening 121 is shaped to match at least part of the profile of the front wheel 20, and the wheel opening 121 is arranged to cooperate with and concentric to the front wheel 20.

[0056] The side 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 12 and covers the door opening 122, or the door 2 is slidably connected to the side 12 and covers the door opening 122. The door 2 can be of a special shape, and 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 most rearward edge in the X direction.

[0057] Generally, 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 enable full opening and improve the convenience of the driver getting on and off the vehicle using the door opening 122 of the door 2.

[0058] In the existing cab 10 design, only the comfort of the driver (or passenger) in the cab in a sitting position (such as human-machine operation function, driver's field of view, etc.) and the influence of the door opening on the convenience of the driver (or passenger) getting on and off the vehicle are generally concerned, and the position of the front wheel is rarely considered as a parameter for evaluating the convenience of the driver (or passenger) getting on and off the vehicle, which is particularly important for cabs 10 with limited cab length or layout space.

[0059] 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 cab length, the longer the cargo box length, and the cargo box length directly affects the carrying capacity of the truck and the product competitiveness.

[0060] 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 requirements of driving comfort and convenience of getting on and off the vehicle. The present application can conveniently and effectively solve the above problems by including the position of the front wheel in the evaluation system of the convenience of the driver (or passenger) getting on and off the vehicle, and this is particularly important for the design of cabs with limited cab length or layout space.

[0061] Further, including the position of the front wheel 20 in the evaluation index of the convenience of the driver (or passenger) getting on and off the vehicle is not only particularly important for cabs 10 with limited cab length or layout space, but also very important for cabs with low wind resistance and streamlined design.

[0062] For example, for a light truck, to a certain extent, the smaller the wind resistance means that the windshield of the cab 10 is more inclined, so as to ensure that the driver will not collide with the windshield that is excessively inclined, thereby affecting the driving comfort, the driver position needs to be moved backward as a whole, and the overall position of the driver is moved backward, which directly leads to the increase of the length of the cab, which is not conducive to improving the carrying capacity and the competitiveness of the whole vehicle product.

[0063] Therefore, for the cab with limited length or limited layout space, the inventor needs to make great efforts to study how to arrange the cab 10 to take into account the driving comfort, the convenience of getting on and off 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 competitiveness of the whole vehicle product.

[0064] Based on this, in the cab 10 in the embodiments of the present application, the position of the front wheel 20 is taken into account in the evaluation system of the convenience of getting on and off the vehicle, and more specifically, the cab is positioned and designed according to the position of the center of the front wheel 20, so that 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, and is also a necessary condition for the cab with limited length and / or low wind resistance.

[0065] In one embodiment of the present application, 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, that is, the front edge of the door 2 is located on the front side of the center point of the wheel opening 121 along the X direction, and the rear edge of the door 2 is located on the rear side of the center point of the wheel opening 121 along the X direction, and the distance between the rear edge and the center point of the wheel opening 121 is greater than the distance between the front edge and the center point of the wheel opening 121, so that the driver's sitting position can be moved backward under the condition that the length of the cab 10 is constant, and the driver can get on the vehicle from the rear side of the front wheel 20, so as to improve the convenience of getting on and off the vehicle while fully ensuring the driver's field of view and operating space.

[0066] 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, on the one hand, sufficient space is left at the front part 11, so that the front part 11 of the cab 10 forms a streamlined structure, realizes the design of the low wind resistance cab 10, and further reduces the wind resistance coefficient, reduces the energy consumption, and improves 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. 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.

[0067] It can be understood that the door 2 determines the sitting posture or overall position of the driver in the cab 10, and by designing the structure of the cab 10 based on the position of the door 2, other parts of the cab 10 can be adjusted in linkage with the door 2 to achieve the overall design of the cab 10.

[0068] For the cab 10 in the above embodiment, if 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, which results in a small space for getting on and off behind the front wheel 20, 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, which also makes it difficult to form a streamlined structure for the front part 11 of the cab 10, and the effect of reducing the wind resistance of the cab 10 is not obvious enough. If 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, and in the case that the overall length of the light truck is constant, the length occupied by the cab 10 is too large, which affects the space of the cargo box and makes it difficult to meet the transportation demand of the light truck.

[0069] Therefore, by making the ratio a of L1 to L2 in the embodiment satisfy 0.65≤a≤0.95, the cab 10 can have the possibility of reducing the size of the cab 10 and / or reducing energy consumption while meeting the convenience of getting on and off.

[0070] 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 is moderate, which can have the possibility of reducing the size of the cab 10 and making the front part 11 of the cab 10 form a streamlined structure while meeting the convenience of getting on and off for the driver, so as to balance the convenience of getting on and off, the length of the cab and the wind resistance of the cab 10.

[0071] In some optional embodiments, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 satisfies 630mm≤L1≤1030mm.

[0072] Wherein, the front edge of the door 2 and the rear edge of the wheel opening 121 form a wheel cover area S1, and the rear edge of the door 2 and the rear edge of the wheel opening 121 form a step area S2, which is used for the driver to get on and off.

[0073] It is found by research and development 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 leads to an increase in the overall length of the cab 10, 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 10 under the condition of a certain 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 poorer, and the space left for wind resistance design is smaller, making it difficult to achieve low wind resistance design.

[0074] In the present application, by setting the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 to 630mm≤L1≤1030mm, on the one hand, a relatively appropriate step area S2 space can be met to improve the convenience of the driver getting on and off the vehicle, and on the other hand, the length of the cab 10 can be controlled within a reasonable range, thereby maximizing the cargo box space under the condition of a certain overall length of the vehicle.

[0075] In some optional embodiments, 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 distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 satisfies 780mm≤L1≤930mm, and further optionally, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 satisfies 780mm≤L1≤880mm. In these embodiments, not only the convenience of the driver getting on and off the vehicle can be met, but also sufficient design space is reserved for shortening the size of the cab 10 and designing a streamlined cab, thereby being able to take into account the convenience of getting on and off the vehicle, shortening the length of the cab, and reducing the wind resistance of the cab 10, and improving the design compatibility.

[0076] In a specific embodiment of the present application, L1=833mm, L2=1048mm, a=L1 / L2=0.795, along the X direction, the distances of the front edge and the rear edge of the door 2 from the center point of the wheel opening 121 can meet the space requirements of the cab 10 and the getting on and off the vehicle, and at the same time, the front part 11 of the cab 10 can form a streamlined structure, thereby reducing the wind resistance of the cab 10 and reducing energy consumption.

[0077] It can be understood that the front edge of the door 2 and the rear edge of the door 2 also have an impact on other parts of the cab 10. Under the condition that the ratio a of L1 and L2 satisfies the preset range, the position of the rear edge of the door 2 determines the position of the front edge of the door 2, and for the front edge of the door 2, under the condition that the size of the cab 10 along the X direction is certain, the position of the front edge of the door 2 will affect the setting space of the front part 11 structure of the cab 10, so the front part 11 structure of the cab 10 can be adjusted accordingly to improve the wind resistance performance of the cab 10.

[0078] Taking the rotational connection of the door 2 to the side portion 12 as an example, the cab 10 needs to be provided with a door hinge, so that the door 2 is rotationally connected to the side portion 12 of the cab body 1 through the door hinge, i.e., in the X direction, the front edge of the door 2 is related to the position of the door hinge.

[0079] It can be understood that the front edge of the door 2 and the headlamp need to reserve sufficient space for arranging the parts related to the headlamp (for example, the headlamp, the hinge, the front panel, the guard plate, etc.). The smaller the distance between the front edge of the door 2 and the headlamp, the more advantageous it is for shortening the overall length of the cab, but it is not advantageous for arranging the parts related to the headlamp; on the contrary, the larger the distance between the front edge of the door 2 and the headlamp, the more advantageous it is for arranging the parts related to the headlamp, but it is not advantageous for shortening the overall length of the cab.

[0080] In an embodiment, the installation space of the headlamp needs to be at least 450 mm.

[0081] In addition, by setting 630 mm≤L1≤1030 mm and the ratio a of L1 and L2 satisfying 0.65≤a≤0.95, the position of the front edge of the door 2 can also be controlled, so that in the X direction, the front edge of the door 2 will not be moved too much relative to the center point of the wheel opening 121, so as to ensure that there is sufficient gap between the door hinge and the headlamp, avoiding interference between the two. For the rear edge of the door 2, under the condition that the size of the cab 10 in the X direction is constant, the position of the rear edge of the door 2 will affect the arrangement space of the parts at the rear of the cab 10, so the structure of the parts at the rear of the cab 10 can be adjusted correspondingly to ensure the reliability of the cab 10.

[0082] Please refer to Figures 1 to 3 In some optional embodiments, the side portion 12 includes a pillar 123, which is located on the side of the rear edge of the door 2 away from the front portion 11 in the X direction, and the size of the pillar 123 is L3, and the value range of L3 satisfies 60 mm≤L3≤260 mm. The size of the pillar 123 can be the size of the projection of the pillar on the Y0 plane measured in the X direction.

[0083] The pillar 123 refers to a pillar located on the rear side of the rear edge of the door 2 and used to bear the pressure from the top and rear of the cab, which can play a role in dispersing the impact force when the cab 10 collides and protecting the driver. The larger the size of the pillar 123 in the X direction, the stronger the strength of the cab 10.

[0084] Since the size of the post 123 is also affected by the position of the rear edge of the door 2 when the size of the cab 10 along the X direction is fixed, by setting the size L3 of the post 123 to satisfy 60mm≤L3≤260mm, the strength of the post 123 can be ensured, the space occupied by the post 123 is reduced as much as possible, the space of the step area S2 is increased to facilitate the driver to get on and off the vehicle, the weight of the post 123 is reduced, and the reliability of the cab 10 is improved.

[0085] Further optionally, in the X direction, the size L3 of the post 123 satisfies 100mm≤L3≤220mm. In one specific embodiment of the present application, L3=160mm, which can more conveniently balance the position of the rear edge of the door 2 and the size of the post 123 when the size of the cab 10 along the X direction is fixed, facilitate the driver to get on and off the vehicle while meeting the strength requirement of the cab 10, and also allow the front part 11 of the cab 10 to be designed in a streamlined structure to reduce the wind resistance of the cab 10 and reduce energy consumption.

[0086] In some optional embodiments, in the X direction, the maximum size of the cab body 1 is L4, and the value range of L4 satisfies 1550mm≤L4≤1950mm.

[0087] The maximum size of the cab body 1 along the X direction refers to the distance from the most front end of the cab body 1 to the last end of the cab body 1 along the X direction, and can also be the size of the projection of the cab body 1 on the Y0 plane along the X direction. The larger the maximum size L4 of the cab body 1, the more sufficient the space for man-machine arrangement in the cab, but the size of the cargo box is reduced. Conversely, the smaller the maximum size L4 of the cab body 1, the larger the size reserved for the cargo box, but the space for man-machine arrangement in the cab is more limited.

[0088] Therefore, in the present application, by limiting the maximum size L4 of the cab body 1 to be between 1550mm and 1950mm, both driving comfort and the size of the cargo box reserved can be improved to increase the carrying capacity of the vehicle product related to the cab (for example, a light truck).

[0089] In some optional embodiments, the value range of the maximum size L4 of the cab body 1 satisfies 1600mm≤L4≤1900mm. Further optionally, the value range of the maximum size L4 of the cab body 1 satisfies 1650mm≤L4≤1850mm. Further optionally, the value range of the maximum size L4 of the cab body 1 satisfies 1700mm≤L4≤1800mm.

[0090] In one specific embodiment of the present application, L4=1750mm. With the size of the cab, not only the driver-vehicle arrangement space that can meet the driving comfort, but also the sufficient design space for the driver to get on and off the vehicle, shorten the size of the cab 10 and design a streamlined cab, so as to take into account the convenience of getting on and off the vehicle, shorten the length of the cab and reduce the wind resistance of the cab 10, and then the driving requirements can be met and the load capacity can be improved.

[0091] Please refer to Figures 1 to 3 In some optional embodiments, in the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the cab body 1 satisfies: 0.38≤L8 / L4≤0.48. The length dimension of the front overhang is the distance between the frontmost end of the front portion 11 and the center point of the wheel opening 121 in the X direction. For example, the length dimension L8 of the front overhang can be the dimension measured along the X direction of the projection of the frontmost end of the front portion 11 and the front wheel center (or the wheel opening center) on the Y0 plane. It can be understood that the smaller the front overhang dimension, the smaller the front compartment arrangement space, but the better the passing performance of the corresponding vehicle, and the larger the driver-vehicle space left for the cab 10, 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 overhang dimension, the worse the passing performance of the corresponding vehicle, and the smaller the driver-vehicle space left for the cab 10, which is not conducive to the driver to get on and off the vehicle, but is conducive to the front compartment arrangement space.

[0092] Therefore, in the cab 10 in the embodiments of the present application, by satisfying the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the cab body 1 in the X direction: 0.38≤L8 / L4≤0.48, sufficient design space can be reserved for the convenience of the driver to get on and off the vehicle and the design of a streamlined cab while meeting the front compartment arrangement space and ensuring that the vehicle meets the passing performance requirements.

[0093] 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. In the X direction, the distance (i.e., the front overhang dimension) L8 between the frontmost end of the front portion 11 and the center point of the wheel opening 121 satisfies: 640mm≤L8≤840mm.

[0094] In one specific embodiment of the present application, L8=700mm, 720mm, 740mm or 760mm. For example, L8=740mm, L8 / L4=0.42, which can meet the requirements of the front compartment arrangement, the passing performance of the vehicle, the load demand and the convenience of the driver to get on and off the vehicle.

[0095] It can be understood that, for the chassis with limited arrangement space, the position of the front wheel 20 relative to the chassis 100 is adjusted on the basis of adjusting the position of the front wheel 20 relative to the cab body 1.

[0096] Please refer to Figures 1 to 4 , Figure 4 A top view of the chassis 100 provided by some embodiments of the present application is shown.

[0097] 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.

[0098] The wheelbase L14 can be 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.

[0099] 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 shortening the length dimension L8 of the front suspension of the cab 10, the wheelbase dimension L14 of the chassis 100 can be increased.

[0100] 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 chassis 100 of the embodiments of the present application, by moving the front wheel 20 forward, under the condition that the size of the chassis 100 along the X direction is constant, the wheelbase dimension L14 of the chassis 100 can be increased to increase the arrangement space of the power battery, thereby increasing the power of the power battery that can be arranged on the chassis 100, more conveniently meeting the demand for large power, and improving the product competitiveness.

[0101] In some optional embodiments, the wheelbase L14 satisfies 3360mm≤L14≤4000mm.

[0102] The specific value of the wheelbase L14 is related to the length dimension 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 for 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.

[0103] In one specific embodiment of the present application, L14=3450mm, 3750mm or 3950mm, and when L14=3750mm, the power battery capacity can be extended from 100kWh to 120kWh.

[0104] As described above, it is particularly important to take the position of the front wheel 20 into account in the evaluation of the convenience of the driver (or passenger) getting on and off the vehicle, especially for a cab with limited cab length or layout space. In addition to the door 2, the position of the driver's seat 4 and the position of the steering wheel 51 also determine the position or posture of the driver to some extent. By positioning the brake pedal 3, the driver's seat 4 and / or the steering wheel 51 according to the position of the front wheel 20, a better solution of the cab man-machine layout that can meet the convenience of the driver getting on and off the vehicle can be effectively obtained, which is particularly important for trucks, especially light trucks, and is also a necessary condition for cabs with limited cab length and / or low drag.

[0105] Please refer to Figures 1 to 5 , Figure 5 A side view of the cab 10 provided by some embodiments of the present application is shown. In some alternative embodiments, the cab 10 further comprises a brake pedal 3 arranged in the driver's cabin. When the brake pedal 3 is in a non-braking state, the center point of the brake pedal 3 is located on the side of the center point of the wheel opening 121 towards 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, which satisfies the range: 10mm≤L9≤410mm. Wherein, L9 can be the size measured along the X direction between the projection of the center point of the brake pedal 3 on the Y0 plane and the projection of the center point of the wheel opening 121 on the Y0 plane.

[0106] When the brake pedal 3 is positioned at the center of the front wheel 20, compared with the cab 10 of the existing light truck, by moving the brake pedal 3 rearward relative to the center of the front wheel 20, sufficient space can be left in the front portion 11 of the cab 10 to form a streamlined structure in the front portion 11 of the cab 10, so as to realize the design of a low-drag cab 10, thereby 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.

[0107] 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 seat position is to the front wheel 20, and the size of the step area S2 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. Conversely, 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 seat position is from the front wheel 20, and the size of the step area S2 for the driver to get on and off the vehicle will be increased, which is conducive to the convenience of the driver getting on and off the vehicle, but at the same time, it also increases the overall length of the cab, which is not conducive to improving the load capacity of the vehicle.

[0108] Specifically, by locating 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 at a distance L9≤410mm from the center point of the wheel opening 121 when the brake pedal 3 is in a non-braking state, the driving position can be moved back far enough to increase the size of the step area S2 along the X direction, facilitating the driver to get on and off the vehicle. Moreover, by locating 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 at a distance L9≥10mm from the center point of the wheel opening 121, the driving position can not be moved back too much, thereby reducing the cab space 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.

[0109] In some optional embodiments, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 when the brake pedal 3 is in a non-braking state is in the range of 60mm≤L9≤360mm, further optionally, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 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.

[0110] In a specific embodiment of the present application, L9=180mm, 210mm or 250mm, which can provide sufficient design space for the front portion 11 of the streamlined cab, so that the front portion 11 of the cab 10 forms a streamlined structure, realizing the design of the low-drag cab 10. Moreover, it can also reduce the cab space while improving the convenience of getting on and off the vehicle, thereby improving the performance of the cab 10.

[0111] Please refer to Figures 1 to 6 , Figure 6A side view of the cab 10 is shown. In some alternative embodiments, the cab 10 further comprises a driver seat 4 arranged in the driver cabin and connected to the driver compartment 1. 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 portion 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 of L10 satisfies 365mm≤L10≤765mm. Wherein, L10 can be the size measured along the X direction of the projection of the center point of the driver seat 4 on the Y0 plane and the projection of the center point of the wheel opening 121 on the Y0 plane.

[0112] When the driver seat 4 is positioned at the center of the front wheel 20, compared with the cab 10 of the existing light truck, by moving the driver seat 4 backward, sufficient space can be left in the front portion 11 of the cab 10 to form a streamlined structure in the front portion 11 of the cab 10, realize the design of a low-drag cab 10, and thus reduce the wind resistance coefficient, reduce energy consumption, and improve the cruising range of the cab 10 while ensuring getting on and off the vehicle.

[0113] Specifically, 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 portion 11, and the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 is greater than or equal to 365mm, which can move the driving position backward to form a streamlined structure in the front portion 11 and increase the size of the step area S2 along the X direction to facilitate the driver getting on and off the vehicle. Moreover, by making the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 less than or equal to 765mm, the driving position can not be moved too much, so as to reduce the size of the driver cabin to increase the size of the cargo box and improve the load-carrying performance of the light truck under the condition that the size of the light truck is constant.

[0114] In some alternative embodiments, the value of L10 satisfies 415mm≤L10≤715mm. Further alternatively, the value of L10 satisfies 465mm≤L10≤665mm. Further alternatively, the value of L10 satisfies 515mm≤L10≤615mm.

[0115] In one specific embodiment of the present application, L10=525mm, 565mm or 605mm, which can leave moderate space in the front portion 11 to form a streamlined structure in the front portion 11 of the cab 10 and realize the design of a low-drag cab 10. Moreover, the size of the driver cabin can be reduced while improving the convenience of getting on and off the vehicle and improving the performance of the cab 10.

[0116] Please refer to Figures 1 to 7 , Figure 7 A side view of the cab 10 is shown. In some alternative embodiments, the cab 10 further comprises a steering mechanism 5, the steering mechanism 5 comprising a steering wheel 51 arranged in the driver's compartment, and a distance L11 between a center point of the steering wheel 51 and a center point of the wheel opening 121, the distance L11 being in a range of -65mm≤L11≤335mm. Wherein the distance L11 can be a dimension measured along the X direction between a projection of the center point of the steering wheel 51 on the Y0 plane and a projection of the center point of the wheel opening 121 on the Y0 plane.

[0117] Wherein the distance L11 takes a negative value when the center point of the steering wheel 51 is located on a side of the center point of the wheel opening 121 close to the front portion 11, and the distance L11 takes a positive value when the center point of the steering wheel 51 is located on a side of the center point of the wheel opening 121 away from the front portion 11.

[0118] When the steering wheel 51 is positioned at the center of the front wheel 20, compared with the cab 10 of the existing light truck, by moving the steering wheel 51 rearward, sufficient space can be left in the front portion 11 of the cab 10 to form a streamlined structure in the front portion 11 of the cab 10, so as to realize the design of a low-drag cab 10, thereby being able to reduce the drag coefficient while ensuring getting on and off the vehicle, reduce energy consumption, and improve the cruising range of the cab 10.

[0119] Specifically, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 is greater than or equal to -65mm, so as to move the driving position rearward, so as to form a streamlined structure in the front portion 11, and increase the size of the step area S2 along the X direction, so as to facilitate the driver to get on and off the vehicle. And by making the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 less than or equal to 335mm, the driving position is not moved too much, so as to reduce the space of the driver's compartment, so as to increase the cargo box space under the condition that the size of the light truck is constant, so as to improve the load-carrying performance of the light truck.

[0120] 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.

[0121] In one specific embodiment of the present application, L11=105mm, 135mm or 155mm, which can leave a moderate space at the front part 11, so that the front part 11 of the cab 10 forms a streamlined structure, achieving a low wind resistance cab 10 design. Also, it can improve the convenience of getting on and off while reducing the driving space, and improve the performance of the cab 10.

[0122] Referring to Figure 8 , Figure 8 Fig. 1 shows a top view of the cab 10 provided by some embodiments of the present application.

[0123] In some optional embodiments, in the Y direction, the maximum size of the driver's compartment 1 is L7, and the value range of L7 satisfies: 2120mm≤L7≤2220mm.

[0124] The maximum size of the driver's compartment 1 in the Y direction refers to the distance from the leftmost end to the rightmost end of the driver's compartment 1 in the Y direction, i.e. the distance between the two side parts 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 size of the driver's compartment 1 in the Y direction is related to the size of the cargo box in the Y direction, which can be equal to the size of the cargo box in the Y direction.

[0125] In one specific embodiment of the present application, the size of the cargo box in the Y direction is set to 2170mm, so the maximum size L7 of the driver's compartment 1 is 2170mm, so that the surface of the side part 12 of the driver's compartment 1 is flush with the cargo box, so as to reduce the wind resistance coefficient.

[0126] Referring to Figures 1 to 11 , Figure 9 Fig. 2 shows a structural schematic diagram of the cab 10 provided by some embodiments of the present application, Figure 10 Fig. 3 shows a side view of the cab 10 provided by some embodiments of the present application, Figure 11 Fig. 4 shows a measurement schematic diagram of the inclination angle provided by some embodiments of the present application.

[0127] In some optional embodiments, the front part 11 includes a windshield part 111, and the windshield part 111 is arranged to be inclined to the vertical plane and the inclination angle is a1, wherein the value range of a1 satisfies: 15°≤a1≤25°.

[0128] The inclination angle a1 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 in the Y direction, and the second intersection point being the intersection point formed by the 457mm arc with the first intersection point and the windshield part 111.

[0129] 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 position will be forced to move backward to avoid affecting the driving field of view, operability, etc., and the driver position moving backward will inevitably lead to an increase in the overall length of the cab, which is 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.

[0130] 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.

[0131] 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 comprehensive product competitiveness of the cab 10.

[0132] 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°.

[0133] 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.

[0134] 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 457 mm circular arc with the second zone portion 113.

[0135] Since the smaller 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 portion 113 relative to the vertical plane, the closer the inclination angles of the windshield portion 111 and the second portion 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.

[0136] 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 portion 113 of the cab body 1, the inclination angle a2 of the second portion 113 relative to the vertical plane cannot be set too large, i.e. the specific angle of the inclination angle a2 of the second portion 113 relative to the vertical plane can be adjusted according to the inclination angle a1 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.

[0137] Please refer to Figures 1 to 12 , Figure 12 The inclination angle of the first portion 112 is shown in the diagram.

[0138] In some optional embodiments, the inclination angle of the first portion 112 relative to the vertical plane is smaller than the inclination angle of the second portion 113 relative to the vertical plane, and the inclination angle of the first portion 112 relative to the vertical plane is a3, 0°≤a3≤10°.

[0139] It can be understood that the inclination angle of the first portion 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 portion 112, the smaller the windward area of the front portion of the cab, which is beneficial for reducing the wind resistance, but has a limited effect on the space for the man-machine arrangement (e.g. components such as the brake pedal 3, the steering wheel 51, 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 a3 of the first portion 112 relative to the vertical plane, the setting position of the second portion 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 cab.

[0140] In a specific embodiment of the present application, a3=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.

[0141] 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 dimension L5 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.

[0142] 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 along the Z direction to the fifth intersection point, which is the uppermost end of the intermediate position of the front bumper along the Y direction.

[0143] By making the maximum dimension L5 of the first section 112 along the Z direction≥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 L5 of the first section 112 along the Z direction≤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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] By making the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20≥220mm, the ground clearance of the front bumper along 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 making the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20≤320mm, 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.

[0148] 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 satisfies 235mm≤L6≤305mm. Further alternatively, the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 satisfies 250mm≤L6≤290mm.

[0149] In one specific embodiment of the present application, L6=250mm, 270mm or 300mm, so as to balance the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0150] Please refer to Figure 13 , Figure 13 A side view of the cab 10 provided by some other embodiments of the present application is shown.

[0151] 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 along the Z direction. The third section 114 is arranged to be inclined to the vertical plane and the inclination angle is α4, which satisfies 25°≤α4≤40°.

[0152] The third section 114 refers to the section above the windshield along the Z direction. The third section 114 can be integrally arranged with the first section 112 and the second section 113 and serve as the roof of the cab 10, or the third section 114 can be separately arranged and form a fairing.

[0153] Similarly to the windshield section 111, the inclination angle α4 of the third section 114 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 114 along the Y direction, and the seventh intersection point is the intersection point formed by the 457mm circular arc with the sixth intersection point and the third section 114.

[0154] By making the inclination angle α4 of the third section 114 to the vertical plane ≥25°, the third section 114 can be inclined to the vertical plane at a sufficient angle to reduce the wind resistance coefficient and reduce the energy consumption of the cab 10. By making the inclination angle α4 of the third section 114 to the vertical plane ≤40°, the third section 114 can be inclined to the vertical plane without being 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 on and off the vehicle.

[0155] In one specific embodiment of the present application, α4=30°, 33°, 35° or 38°, so as to balance the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0156] Please refer to Figures 1 to 13 The cab 10 provided by the embodiments 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.

[0157] In one embodiment, in the X direction, the maximum size of the cab body 1 is L4=1750mm, and the length size of the front suspension is L8=740mm.

[0158] 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. 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=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.

[0159] Further, the front portion 11 includes a windshield portion 111 which is arranged to be inclined to the vertical plane and the inclination angle α1=20°, and the front portion 11 further includes 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 α1 of the windshield portion 111 to the vertical plane and the inclination angle α2 of the second zone portion 113 to the vertical plane satisfies: 0°≤α1-α2≤5°, the inclination angle α3=0° of the first zone portion 112 to the vertical plane, and the inclination angle α4=33° of the third zone portion 114 to the vertical plane.

[0160] Further, the maximum size of the first zone portion 112 in the Z direction is L5=370mm, and the distance between the lowermost edge of the first zone portion 112 and the lower edge of the front wheel 20 is L6=270mm.

[0161] 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, while the wind resistance coefficient of the light truck with the cab of the above-mentioned embodiments of the present application is about 0.300, which can reduce the energy consumption of the traditional light truck by about 20%.

[0162] Therefore, the cab, the chassis 100 and the light truck according to the embodiments have the advantages of small cabin space, high convenience of getting on and off, low wind resistance coefficient, low energy consumption and the like, and are more convenient for popularization and application.

[0163] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to the application without departing from the scope thereof, and equivalent parts can be substituted for the parts thereof. In particular, the technical features mentioned in each of the embodiments can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A driver's cab, characterized in that, The driver's cab includes: The driver's cab includes a front section and side sections located on both sides of the front section. The side sections are provided with wheel wells for engaging with the front wheels and are concentrically arranged with the front wheels. A door is connected to the side and is openable relative to the side. The door includes a front edge and a rear edge arranged along the X direction. In the X direction, the front edge and the rear edge of the door are located on both sides of the center point of the wheel well. In the X direction, the distance between the front edge and the rear edge is L2. The ratio a of the distance L1 between the rear edge of the door and the center point of the wheel well and the distance L2 between the front edge and the rear edge satisfies: 0.65≤a≤0.

95.

2. The driver's cab according to claim 1, characterized in that, In the X direction, the ratio a of the distance L1 between the rear edge of the door and the center point of the wheel well to the distance L2 between the front edge and the rear edge satisfies: 0.75≤a≤0.

85.

3. The driver's cab according to claim 1, characterized in that, The distance L1 between the rear edge of the door and the center point of the wheel well shall be 630mm≤L1≤1030mm.

4. The driver's cab according to claim 1, characterized in that, The distance L1 between the rear edge of the door and the center point of the wheel well is 680mm≤L1≤980mm.

5. The driver's cab according to claim 1, characterized in that, The side portion includes a pillar. In the X direction, the pillar is located on the side of the rear edge of the door away from the front portion. The size of the pillar is L3, and the value of L3 is within the range of 60mm≤L3≤260mm.

6. The driver's cab according to claim 1, characterized in that, In 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.

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 7, 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 cab as described in any one of claims 1 to 11.

13. A light truck, characterized in that, include: The driver's cab as described in any one of claims 1 to 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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