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

Description

TECHNICAL FIELD

[0001] The present application relates to the 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 paid close attention to by the driver because they directly affect the driving experience.

[0004] In addition, reducing the air resistance of the cab is paid more and more attention 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, resulting in a significant increase in 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 that the total energy of the whole vehicle is constant (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 reconfigure the layout of the cab, reserve design space for the formation of a streamlined structure in the front part of the cab in the limited space, and facilitate the design of a low wind resistance cab.

[0006] In a first aspect, the embodiments of the present application provide a cab. The cab comprises a cab body and a steering mechanism. The cab body has a driver's cabin. 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 steering mechanism comprises a steering wheel. The steering wheel is arranged in the driver's cabin. In the X direction, the maximum size L4 of the cab body satisfies 1550mm≤L4≤1950mm. The distance between the center point of the steering wheel and the center point of the wheel opening is L11. The value of L11 satisfies -65mm≤L11≤335mm. When the center point of the steering wheel is located on the side of the center point of the wheel opening close to the front part, L11 takes a negative value. When the center point of the steering wheel is located on the side of the center point of the wheel opening away from the front part, L11 takes a positive value.

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

[0008] According to any one of the preceding embodiments of the first aspect of the present application, the maximum size L4 of the cab body satisfies 1600mm≤L4≤1900mm.

[0009] According to any one of the implementation manners of the first aspect of the application, the side portion is provided with a door, and 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 front projection of the steering wheel on the side portion is at least partially located in the wheel cover area, and has a preset distance from the rear edge of the door in the X direction.

[0010] According to any one of the implementation manners of the first aspect of the application, the cab further comprises a driver's seat, and the driver's seat is arranged in the driver's cabin, and the front projection of the driver's seat on the side portion is at least partially located in the step area.

[0011] 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 of L1 to L2 satisfies 0.65≤L1 / L2≤0.95.

[0012] According to any one of the implementation manners of the first aspect of the application, the steering mechanism further comprises a steering shaft and a steering shaft support, the steering shaft is fixedly installed on the driver's compartment body through the steering shaft support, and the steering wheel is in transmission connection with the steering shaft, and the inclination angle of the steering shaft relative to the horizontal plane is α5, and the value range of α5 satisfies: 45°≤α5≤65°.

[0013] According to any one of the implementation manners of the first aspect of the application, the front portion comprises 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°.

[0014] According to any one of the implementation manners of the first aspect of the application, the front portion further comprises a first zone portion and a second zone portion arranged in the Z direction, and the second zone portion is located on the side of the first zone portion towards the windshield portion and is connected with the windshield portion. In the Z direction, the second zone portion 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 relative to the vertical plane and the inclination angle α2 of the second zone portion relative to the vertical plane satisfies: 0°≤α1-α2≤5°.

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

[0016] 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.

[0017] 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°.

[0018] The second aspect of the application provides a chassis comprising the cab of the above-mentioned embodiments.

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

[0020] According to any one of the implementation manners of the second aspect of the application, the steering mechanism further comprises a steering rocker arm and a steering elbow, the first end of the steering pull rod is drivingly connected to the steering gear through the steering rocker arm, and the second end of the steering pull rod is connected to the front wheel hub through the steering elbow.

[0021] According to any one of the implementation manners of the second aspect of the application, in the X direction, the length dimension L8 of the front overhang of the cab satisfies 640mm≤L8≤840mm, and the length dimension of the front overhang is the distance between the frontmost end of the cab and the center point of the wheel opening along the X direction.

[0022] According to any one of the implementation manners of the second aspect of the 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 wheel along the Z direction is L6, and the value range of L6 satisfies 220mm≤L7≤320mm.

[0023] The third aspect of the application provides a light truck comprising the cab of the first aspect of the application or the chassis of the second aspect of the application.

[0024] The cab provided by the embodiment of the present application can change the position of the driver's sitting posture relative to the whole vehicle compared with the existing light truck by positioning and designing the steering wheel according to the position of the center point of the wheel opening. The distance between the center point of the steering wheel and the center point of the wheel opening is set to-65mm≤L11≤335mm, and the maximum size L4 of the driver's cab body in the X direction satisfies 1550mm≤L4≤1950mm, so that the optimal man-machine arrangement can be realized under the limited length of the cab to meet the driving comfort and the convenience of getting on and off the vehicle, and sufficient design space is reserved for other cab designs (for example, low wind resistance design) to further realize energy consumption reduction.

[0025] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, the present application can be implemented according to the content of the specification, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0028] Figure 2 is a side view of a cab without doors provided by some embodiments of the present application;

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

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

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

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

[0033] Figure 7 is a structural schematic view of a steering mechanism provided by some embodiments of the present application;

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

[0035] Figure 9 is a top view of a cab provided by some embodiments of the present application;

[0036] Figure 10 This is a structural schematic diagram of the driver's cab provided in some embodiments of this application;

[0037] Figure 11 This is a side view of the driver's cab provided in some embodiments of this application;

[0038] Figure 12 This is a schematic diagram of tilt angle measurement provided in some embodiments of this application;

[0039] Figure 13 This is a simplified diagram of the tilt angle of the first region provided in some embodiments of this application;

[0040] Figure 14 This is a side view of the driver's cab provided in some embodiments of this application.

[0041] Explanation of icon numbers:

[0042] 100 - Chassis; 10 - Cab; 20 - Front wheel; 30 - Rear wheel;

[0043] 1-Driver's cab; 11-Front section; 111-Windshield section; 112-First section; 113-Second section; 114-Third section; 12-Side section; 121-Wheel opening; 122-Door opening; 2-Door; 3-Brake pedal; 4-Driver's seat; 5-Steering mechanism; 51-Steering wheel; 52-Steering shaft; 53-Steering shaft bracket; 54-Steering tie rod; 55-Steering gear; 56-Steering rocker arm;

[0044] S1 - Wheel cover area; S2 - Step area.

[0045] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0046] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0047] 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 noted that, unless otherwise specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Please refer to Figure 1 , Figure 1 A side view of the chassis 100 provided by some embodiments of the present application is shown.

[0049] The embodiments of the present application provide a light truck, which comprises a chassis 100 and a cargo box arranged on the chassis 100.

[0050] The light truck refers to a cargo vehicle provided with a cargo box, 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.

[0051] The chassis 100 includes the chassis 100 with the cab 10 and the chassis 100 without the cab 10, that is, the light truck can include the chassis 100 with the cab 10 and the cargo box, or the chassis 100 without the cab 10, the cargo box and the cab 10.

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

[0053] It should be noted that the cab 10 in the embodiments of the present application can be used for the whole vehicle product (for example, the light truck) related to the chassis 100 of each embodiment described above, and as a component part of the chassis 100 or the related whole vehicle product (for example, the light truck), of course, it can also be produced or sold as an independent component.

[0054] In this article, 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.

[0055] 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.

[0056] The cab 10 provided by the embodiments of the present application includes a cab body 1 and a steering mechanism 5, the cab body 1 has a driver's cabin, the cab body 1 includes a front part 11 and side parts 12 located on both sides of the front part 11, the side parts 12 are provided with wheel openings 121, the wheel openings 121 are used to cooperate with and are concentrically arranged with the front wheels 20, and the steering mechanism 5 includes a steering wheel 51 arranged in the driver's cabin. Wherein, in the X direction, the maximum size L4 of the cab body 1 satisfies the range: 1550mm≤L4≤1950mm, and the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfies the range: -65mm≤L11≤335mm.

[0057] Wherein, the 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 part 11, and the 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 part 11. In this article, the maximum size L4 of the cab body 1 can be the maximum size of the projection of the cab body on the Y0 plane measured along the X direction; similarly, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 can be the distance between the projections of the steering wheel 51 and the wheel opening 121 on the Y0 plane measured along the X direction.

[0058] The cab body 1 refers to the external structure for forming the cab 10, and the cab body 1 includes 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.

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

[0060] In the existing cab design, only the driving comfort of the driver (or the passenger) in the sitting position in the cab (such as the man-machine operation function, the driver's field of view, etc.) and the influence of the door opening on the convenience of the driver (or the passenger) getting in and out of the cab are usually concerned, and the position of the front wheel 20 is rarely taken as a parameter for evaluating the convenience of the driver (or the passenger) getting in and out of the cab, which is particularly important for the cab with limited cab length or layout space.

[0061] Taking a light truck as an example, the regulation requires that the overall length of the vehicle is not more than 6m, which means that the shorter the length of the cab 10 is, the longer the length of the cargo box is, and the length of the cargo box directly affects the carrying capacity of the truck and the product competitiveness.

[0062] Therefore, for the cab with limited cab length or layout space, the inventor needs to make a lot of efforts to study how to arrange the cab man-machine to meet the driving comfort and the convenience of getting in and out of the cab. However, the present application can conveniently and effectively solve the above problems by taking the position of the front wheel 20 into the evaluation system of the convenience of the driver (or the passenger) getting in and out of the cab, solve the man-machine arrangement problem of the cab with limited cab length or layout space, meet the driving comfort and the convenience of getting in and out of the cab, and reserve design space for subsequent cab design (such as low-drag design).

[0063] Further, taking the position of the front wheel 20 into the evaluation index of the convenience of the driver (or the passenger) getting in and out of the cab is not only particularly important for the cab with limited cab length or layout space, but also very important for the streamlined cab designed with low drag.

[0064] Taking a light truck as an example, to a certain extent, the smaller the drag is, the more inclined the front windshield of the cab 10 is, and therefore, in order to ensure that the driver will not collide with the excessively inclined windshield and affect the driving comfort, the driver position needs to be moved backward as a whole, and the overall position of the driver moving backward will directly lead to the increase of the length of the cab 10, which is not conducive to improving the carrying capacity and the product competitiveness of the whole vehicle. 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 of getting in and out of the cab), so as to reserve sufficient design space for other design requirements of the cab 10 (such as cab length design, low-drag design, etc.).

[0065] Therefore, for the cab with limited cab 10 length or limited arrangement space, the inventor needs to make great efforts to study how to arrange the cab man-machine to balance the driving comfort, the getting-on and getting-off convenience 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. Based on this, in the cab 10 in the embodiment of the application, the driver's sitting posture is determined by the steering wheel 51, by taking the position of the front wheel 20 as a parameter into the evaluation system of the getting-on and getting-off convenience, more specifically, by positioning and designing the steering wheel 51 according to the position of the center point of the wheel opening 121, a better solution of the cab man-machine arrangement that can meet the convenience of the driver getting on and off the vehicle can be obtained, which is particularly important for trucks, especially light trucks, and is also a necessary condition for the cab with limited length and / or low wind resistance. In addition, compared with the existing light truck, the position of the driver's sitting posture relative to the whole vehicle can be innovated.

[0066] In an embodiment of the 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 L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 satisfy: -65mm≤L11≤335mm, the driver's sitting posture can be moved backward, the driver can get on and off 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 the low wind resistance cab 10, and further reducing the wind resistance coefficient, reducing the energy consumption, improving the cruising range of the cab 10, when the cab 10 is a fuel vehicle, the fuel economy of the cab 10 can be improved, and when the cab 10 is an electric vehicle or a hybrid vehicle, the power consumption of the cab 10 can be reduced.

[0067] It can be understood that when the driver's sitting posture in the cab 10 is designed based on the steering wheel 51 relative to the center point of the wheel opening 121, other structures in the cab 10 can be adjusted in linkage with the steering wheel 51 to realize the overall design of the cab 10.

[0068] The maximum size of the driver's compartment 1 in the X direction refers to the distance from the most front end of the driver's compartment 1 to the most rear end of the driver's compartment 1 in the X direction, and can also be the size of the projection of the driver's compartment 1 on the Y0 plane in the X direction.

[0069] It can be understood that the larger the maximum size L4 of the driver compartment 1, the more space is available for the man-machine arrangement in the cab 10, but the size of the cargo box is reduced, and vice versa, the smaller the maximum size L4 of the driver compartment 1, the larger the size reserved for the cargo box, but the space for the man-machine arrangement in the cab is more limited.

[0070] 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.

[0071] In the present application, by making the maximum size L4 of the driver compartment 1 along the X direction ≥ 1550 mm, the driving requirements of the light truck can be better met, and by making the maximum size L4 of the driver compartment 1 ≤ 1950 mm, the space occupied by the cab 10 can be reduced under the condition that the size of the light truck is constant, and the cargo box space is increased to better meet the cargo carrying requirements of the light truck.

[0072] 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.

[0073] It can be understood that the larger the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121, the farther the driver position is from the wheel 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 L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121, the closer the driver position is to the wheel 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 closer the driver position is to the wheel 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.

[0074] For the cab 10 in the above embodiment, by making the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 ≥ -65 mm, the driving position can be moved backward to facilitate the formation of a streamlined structure in the front portion 11, and the driver's sitting position is moved to the rear side of the wheel center of the front wheel 20, so that sufficient space can be formed on the rear side of the front wheel 20 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 ≤ 335 mm, the driving position is not moved too much, so that the cab space can be reduced to increase the cargo box space under the condition that the size of the light truck is constant, thereby improving the cargo carrying performance of the light truck.

[0075] Therefore, by satisfying L11 in the embodiments of the present application: -65mm≤L11≤335mm, a better man-machine arrangement can be achieved to meet the driving comfort and the convenience of getting on and off the vehicle, while leaving sufficient design space for other cab 10 designs (for example, low wind resistance design) to further reduce energy consumption.

[0076] 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.

[0077] In a specific embodiment of the present application, L11=105mm, 135mm or 155mm, in which case, a compact arrangement of the man-machine and the front wheels 20 of the cab 10 can be achieved, so that the front portion 11 can have appropriate space to form a streamlined structure to achieve the design of a low wind resistance cab 10. Also, the convenience of getting on and off the vehicle can be improved while reducing the size of the driver's cabin, improving the performance of the cab 10.

[0078] In some alternative embodiments, the maximum size L4 of the driver's cabin 1 satisfies: 1600mm≤L4≤1900mm. Further alternatively, the maximum size L4 of the driver's cabin 1 satisfies: 1650mm≤L4≤1850mm. Further alternatively, the maximum size L4 of the driver's cabin 1 satisfies: 1700mm≤L4≤1800mm.

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

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

[0081] The side part 12 is provided with a door opening 122 for the driver to get on and off the vehicle, and the vehicle door 2 is rotatably connected to the side part 12 and covers the door opening 122, or the vehicle door 2 is slidably connected to the side part 12 and covers the door opening 122. The vehicle door 2 can be a special-shaped structure, and the front edge of the vehicle door 2 refers to the most forward edge in the X direction, and the rear edge of the vehicle door 2 refers to the most rearward edge in the X direction.

[0082] By locating the front edge and the rear edge of the vehicle door 2 on both sides of the wheel opening 121, a step area S2 can be formed between the rear edge of the vehicle door 2 and the rear edge of the wheel opening 121. Moreover, by locating the projection of the steering wheel 51 on the side part 12 at least partially in the wheel cover area S1 and having a predetermined distance with the rear edge of the vehicle door 2 in the X direction, 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.

[0083] Optionally, the projection of the center point of the steering wheel 51 on the Y0 plane is located in the projection area of the wheel cover area S1 on the Y0 plane, and more preferably, the center point of the steering wheel 51 can be located between the center point of the wheel opening 121 and the rear edge of the wheel opening 121, that is, the projection of the center point of the steering wheel 51 on the Y0 plane is located between the projection of the center point of the wheel opening 121 on the Y0 plane and the projection of the rear edge of the wheel opening 121 on the Y0 plane. In this way, the front side of the man-machine position can be limited in the front wheel area, thereby facilitating the man-machine arrangement in the limited cab space, allowing the formation of a streamlined structure in the front part 11 and facilitating the driver to get on and off the vehicle through the step area S2 and improving the convenience of getting on and off the vehicle.

[0084] 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 cab 10 further comprises a driver's seat 4 arranged in the driver's cabin, and the projection of the driver's seat 4 on the side part 12 is at least partially located in the step area S2.

[0085] In the X direction, the center point of the driver's seat 4 is located on the side away from the front part 11 from the center point of the wheel opening 121 and the distance between the center point of the driver's seat 4 and the center point of the wheel opening 121 is L10, and the distance between the center point of the driver's seat 4 and the center point of the wheel opening 121 is L10, and the value of L10 satisfies 365mm≤L10≤765mm. The distance L10 between the center point of the driver's seat 4 and the center point of the wheel opening 121 can be the distance between the projection of the center point of the driver's seat 4 on the Y0 plane and the projection of the center point of the wheel opening 121 on the Y0 plane in the X direction.

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

[0087] Specifically, the center point of the driver 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 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 365 mm. The driving position can be moved backward to form a streamlined structure in the front part 11, and the size of the step area S2 along the X direction is increased to facilitate the driver to get on and off the vehicle. Moreover, by setting the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 to be less than or equal to 765 mm, the driving position is not moved too much, so that the driver cabin space can be reduced to increase the cargo box space under the condition that the size of the light truck is constant, thereby improving the cargo carrying performance of the light truck.

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

[0089] In one specific embodiment of the present application, the distance L10 between the center point of the driver seat 4 and the center point of the wheel opening 121 is 525 mm, 565 mm, or 605 mm. The front part 11 of the cab 10 is left with moderate space to form a streamlined structure, thereby realizing the design of the low-drag cab 10. Moreover, the driver cabin space can be reduced while improving the convenience of getting on and off the vehicle, thereby improving the performance of the cab 10.

[0090] Please refer to Figures 2 to 5 , Figure 5 A side view of the cab 10 is shown. In some optional embodiments, the cab 10 further comprises a brake pedal 3 arranged in the driver cabin and connected to the front part 11. When the brake pedal 3 is in a non-braking state, the center point of the brake pedal 3 is located on the side of the center point of the wheel opening 121 toward the front part 11, and the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121 is in the range of 10 mm to 410 mm.

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

[0092] That is, the brake pedal 3 can be designed according to the position of the steering wheel 51. Compared with the existing cab 10 of the light truck, by moving the brake pedal 3 backward, sufficient space can be reserved for the front part 11 of the cab 10 in the limited driving length, so that the front part 11 of the cab 10 forms a streamlined structure, realizes the design of the 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.

[0093] 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 pedal 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 pedal 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.

[0094] Specifically, by making the center point of the brake pedal 3 located on the side of the center point of the wheel opening 121 towards the front part 11 and the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121 ≤410mm when the brake pedal 3 is in a non-braking state, the driving position can be moved back 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 making the center point of the brake pedal 3 located on the side of the center point of the wheel opening 121 towards the front part 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 cockpit space, increase the cargo box space under the condition of a certain size of the light truck, and improve the load capacity of the light truck.

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

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

[0097] 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 alternative 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. Wherein, the value range of L1 satisfies 630mm≤L1≤1030mm, and the value range of the ratio of L1 to L2 satisfies 0.65≤L1 / L2≤0.95. Wherein, the distance L2 between the front edge and the rear edge of the door 2 can be the distance between the projection of the front edge of the door 2 on the Y0 plane and the projection of the rear edge of the door on the Y0 plane measured along the X direction; Similarly, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 can be the distance between the projections of the rear edge of the door 2 and the wheel opening 121 on the Y0 plane measured along the X direction.

[0098] Generally, the frontmost edge of the door 2 corresponds to the frontmost edge of the door opening of the door 2, and the pivot point of the door 2 is generally arranged at the frontmost edge of the door 2, so as to be fully opened and utilize the door opening of the door 2 to improve the convenience of getting on and off the vehicle for the driver.

[0099] It can be understood that the greater the distance between the rear edge of the door 2 and the center point of the wheel opening 121, the better the convenience of getting on and off the vehicle for the driver, but it will also cause the overall length of the cab to increase, thereby directly affecting the load capacity; on the contrary, the smaller the distance between the rear edge of the door 2 and the center point of the wheel opening 121, the smaller the length of the cab under the condition of the overall length of the vehicle, and the larger the cargo box can be designed, but the convenience of getting on and off the vehicle for the driver is worse, and the space left for wind resistance design is smaller, which is difficult to achieve low wind resistance design.

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

[0101] And, by making the ratio a of the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 and the distance L2 between the front edge and the rear edge satisfy: 0.65≤a≤0.95, on the one hand, the front portion 11 is left with enough space to make the front portion 11 of the cab 10 form a streamlined structure, achieve a low wind resistance cab 10 design, and thus be able to reduce the wind resistance coefficient while ensuring getting on and off, reduce energy consumption, and improve the cruising range of the cab 10. On the other hand, by setting L1 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.

[0102] 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 more than the center point of the wheel opening 121, resulting in less space for getting on and off behind the front wheels, affecting the convenience of getting on and off. In addition, the door 2 is moved forward more than the center of the front wheels 20, which makes it difficult for the front portion 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 more than the center point of the wheel opening 121, so that the length of the cab 10 is too large under the condition that the overall vehicle length is constant, affecting the cargo box space and making it difficult to meet the transportation needs of light trucks.

[0103] 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.

[0104] 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.

[0105] In some alternative 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 of the cab 10 and the center point of the wheel opening 121 to the distance between the front edge and the rear edge of the door 2 is moderate, which can allow a smaller size of the cab 10 and allow the front portion 11 of the cab 10 to form a streamlined structure while meeting the needs of the driver getting on and off, so as to balance the convenience of getting on and off, shorten the length of the cab and reduce the wind resistance of the cab 10.

[0106] In a specific embodiment of the present application, L1=833mm, L2=1048mm, a=L1 / L2=0.795, in the X direction, the relative positions between the front edge and the rear edge of the door 2 and the center point of the wheel opening 121 can meet the space of the cab 10 and the needs of getting on and off, while also reserving design space for the cab 10 to form a streamlined structure in the front portion 11, which is conducive to reducing the wind resistance of the cab 10 and reducing energy consumption.

[0107] Please refer to Figures 2 to 7 , Figure 7 The structure of the steering mechanism 5 provided by some embodiments of the present application is shown. 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, and the inclination angle of the steering shaft 52 relative to the horizontal plane is α5, and the value range of α5 satisfies: 45°≤α5≤65°.

[0108] In the cab 10, the steering wheel 51 is often in transmission connection with the steering shaft 52, and the steering shaft 52 is fixedly installed on the front portion 11 of the cab body 1 through the steering shaft support 53, and when adjusting the position of the steering wheel 51 along the X direction relative to the center point of the wheel opening 121, the position of the steering shaft 52 and the steering shaft support 53 relative to the wheel opening 121 and the front portion 11 will be adaptively adjusted.

[0109] Since the front part 11 of the cab 1 is also connected with the brake system and the combination instrument, etc., the value range of the inclination angle a5 of the steering shaft 52 relative to the horizontal plane is made to satisfy 45°≤a5≤65°, so that after adjusting the position of the steering wheel 51 along the X direction relative to the center point of the wheel opening 121, the gap between the steering shaft support 53 and the brake system and the combination instrument is also greater than the preset distance, so that the cab space utilization is maximized on the basis of reserving the structural installation space, and the low wind resistance cab 10 design is more convenient to realize.

[0110] Further optionally, the value range of the inclination angle a5 of the steering shaft 52 relative to the horizontal plane satisfies 50°≤a5≤60°, and in one specific embodiment of the present application, the inclination angle a5 of the steering shaft 52 relative to the horizontal plane is 55°, so as to further improve the performance of the cab 10.

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

[0112] The steering pull rod 54 is used to connect the steering wheel 51 and the front wheel 20, so as to convert the steering operation of the driver into the actual steering action of the front wheel 20.

[0113] Compared with the existing light truck, the relative position relationship between the steering wheel 51 and the center point of the wheel opening 121 is adjusted in the light truck in the embodiments of the present application, that is, the center point of the wheel opening 121 is arranged forward relative to the steering wheel 51 of the existing light truck along the X direction. 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 along the X direction can be reduced, so that the length L13 of the steering pull rod 54 along the X direction satisfies 440mm≤L13≤540mm, so as to shorten the cab space.

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

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

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

[0117] And by driving the first end of the steering pull rod 54 through the steering rocker 56 to the steering gear 55, and the second end of the steering pull rod 54 is connected to the front wheel 20 hub through the steering bend arm, the reliability of the steering can be improved on the basis of shortening the length L13 of the steering pull rod 54 along the X direction, and the steering mechanism is more convenient to set.

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

[0119] 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.

[0120] 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 streamline structure formed at the front of the cab 10 may be affected. And 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 along the X direction is too short, which leads to poor convenience for getting on and off the vehicle.

[0121] 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.

[0122] Therefore, in the cab 10 in the embodiments of the present application, 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, sufficient design space can be reserved for the convenience of the driver getting on and off the vehicle and designing the streamlined cab while ensuring to meet the passability requirements.

[0123] Further optionally, in the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the 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 meet the needs of the light truck for carrying goods and the needs of the driver for getting on and off the vehicle.

[0124] In some optional embodiments, in the X direction, the length dimension L8 of the front overhang of the cab 10 satisfies: 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.

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

[0126] 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.

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

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

[0129] The specific value of the wheelbase L14 is related to the length dimension L8 of the front overhang and the total length of the chassis in the X direction. By making the wheelbase L14≥3360mm, the space for arranging 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.

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

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

[0132] Referring to Figure 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.

[0133] 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.

[0134] 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.

[0135] 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 measurement schematic view of the inclination angle is shown.

[0136] 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 and the inclination angle is α1, where α1 satisfies: 15°≤α1≤25°.

[0137] The inclination angle α1 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 second intersection point being the intersection point formed by the 457mm circular arc with the first intersection point and the windshield portion 111.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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°.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] Please refer to Figures 1 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°.

[0147] 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 the 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.

[0148] 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.

[0149] 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.

[0150] 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.

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

[0152] 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 arrangement requirement of the functional structure inside the cab 10.

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

[0154] 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 between the lowermost edge of the front bumper and the ground line along the Z direction.

[0155] 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 increases, and the wind resistance also increases, which is not conducive to reducing energy consumption. On the contrary, the smaller the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20, the smaller the wind resistance, which is conducive to improving the cruising range, but the passability of the whole vehicle is poor.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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°.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] Please refer 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.

[0166] 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.

[0167] 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.

[0168] Further, the front part 11 comprises a windshield part 111 which is arranged to be inclined to the vertical plane with an inclination angle α1 = 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 inclination angle α1 of the windshield part 111 to the vertical plane and the inclination angle α2 of the second zone part 113 to the vertical plane satisfies: 0°≤α1-α2≤5°, the inclination angle α3 = 0° of the first zone part 112 to the vertical plane, and the inclination angle α4 = 33° of the third zone part 114 to the vertical plane.

[0169] Further, the minimum dimension 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.

[0170] 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%.

[0171] Therefore, the chassis 100 and the light truck with the cab space according to the embodiment of the present application have the advantages of small cab space, high convenience of getting on and off, low wind resistance coefficient and low energy consumption, and are more convenient for popularization and application.

[0172] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and equivalent substitutions can be made to the components thereof. In particular, the technical features mentioned in each embodiment 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 cab characterized in that, The cab comprises: a driver's compartment having a driver's cabin, the driver's compartment comprising a front portion and side portions on both sides of the front portion, the side portions being provided with wheel openings configured to cooperate with and be concentric with front wheels; a steering mechanism comprising a steering wheel arranged in the driver's cabin; wherein, in the X direction, the maximum dimension L4 of the driver's compartment satisfies 1550mm≤L4≤1950mm, and the distance L11 between the center point of the steering wheel and the center point of the wheel opening satisfies -65mm≤L11≤335mm. wherein, when the center point of the steering wheel is located on the side of the center point of the wheel opening close to the front portion, L11 takes a negative value, and when the center point of the steering wheel is located on the side of the center point of the wheel opening away from the front portion, L11 takes a positive value.

2. The cab of claim 1, wherein, The distance L11 between the center point of the steering wheel and the center point of the wheel opening satisfies -15mm≤L11≤285mm.

3. The cab of claim 1, wherein, The maximum dimension L4 of the driver's compartment satisfies 1600mm≤L4≤1900mm.

4. The cab of claim 1, wherein, The side portions are provided with doors, in the X direction, the front edge and the rear edge of the door are located on both sides of the wheel opening respectively, and a wheel cover area is formed between the front edge of the door and the rear edge of the wheel opening, and a step area is formed between the rear edge of the door and the rear edge of the wheel opening. wherein, the orthographic projection of the steering wheel on the side portion is at least partially located in the wheel cover area, and has a preset distance from the rear edge of the door in the X direction.

5. The cab of claim 4, wherein, The cab further comprises a driver's seat arranged in the driver's cabin, and the orthographic projection of the driver's seat on the side portion is at least partially located in the step area.

6. The cab of claim 4, wherein, 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 of L1 to L2 satisfies 0.65≤L1 / L2≤0.

95.

7. The cab of claim 1, wherein, The steering mechanism further comprises a steering shaft and a steering shaft support, the steering shaft is fixedly installed on the driver's compartment through the steering shaft support, and the steering wheel is in transmission connection with the steering shaft, the inclination angle of the steering shaft relative to the horizontal plane is α5, and the value range of α5 satisfies 45°≤α5≤65°.

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

9. The cab of claim 8, wherein, The front portion further 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 close to the windshield portion and is connected with the windshield portion; In the Z direction, the second zone portion is arranged obliquely relative to the vertical plane and has an inclination angle α2, and the difference between the inclination angle α1 of the windshield portion relative to the vertical plane and the inclination angle α2 of the second zone portion relative to the vertical plane satisfies 0°≤α1-α2≤5°.

10. The cab of claim 9, wherein, The first section has an inclination angle a3 with respect to the vertical plane, and the value of a3 satisfies 0°≤a3≤10°.

11. The cab of claim 9, wherein, The maximum dimension of the first section along the Z direction is L5, and the value of L5 satisfies 320mm≤L5≤420mm.

12. The cab of claim 8, wherein, The front portion further comprises a third section, which is located on the side of the windshield portion away from the wheel opening and connected to the windshield portion along the Z direction, and the third section is arranged to be inclined with respect to the vertical plane and has an inclination angle a4, and the value of a4 satisfies 25°≤a4≤40°.

13. A chassis characterized by, The cab comprises: The cab according to any one of claims 1 to 12.

14. The base pan of claim 13, wherein, The chassis comprises: A vehicle frame, the cab is mounted on the vehicle frame, A front wheel, the center of the front wheel is arranged to coincide with the center of the wheel opening of the cab; The steering mechanism further comprises a steering pull rod and a steering gear, the steering gear is fixedly arranged on the vehicle frame and located below the cab, and the two ends of the steering pull rod are respectively drivingly connected to the steering gear and the hub of the front wheel, and the length L13 of the steering pull rod along the X direction satisfies 440mm≤L13≤540mm.

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

16. The base pan of claim 14, wherein, In the X direction, the length dimension L8 of the front overhang of the cab satisfies 640mm≤L8≤840mm, and the length dimension of the front overhang is the distance between the frontmost end of the cab and the center point of the wheel opening along the X direction.

17. The base pan of claim 13, wherein, The front portion 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 wheel along the Z direction is L6, and the value of L6 satisfies 220mm≤L6≤320mm.

18. A pickup truck characterized by The cab according to any one of claims 1 to 12 or the chassis according to any one of claims 13 to 17.

Images