Cab, chassis and light truck

Abstract

The utility model discloses a cab, a chassis and a light truck. The cab comprises a driving compartment. The driving compartment body comprises a front portion and side portions located on the two sides of the front portion. The maximum size of the driving compartment in the X direction is L4, and the value range of the L4 meets the condition that the L4 is larger than or equal to 1550 mm and smaller than or equal to 1950 mm. The front part comprises a windshield part, the windshield part is obliquely arranged relative to the vertical plane, the inclination angle is alpha 1, and the value range of alpha 1 meets the condition that alpha 1 is larger than or equal to 15 degrees and smaller than or equal to 25 degrees. The front portion further comprises a first area portion and a second area portion which are located below the windshield portion in the Z direction, and the second area portion is located between the first area portion and the windshield portion and connected with the windshield portion. And in the Z direction, the second area part is obliquely arranged relative to the vertical plane, the inclination angle is alpha 2, and the difference value between the inclination angle alpha 1 of the windshield part relative to the vertical plane and the inclination angle alpha 2 of the second area part relative to the vertical plane meets the condition that alpha 1-alpha 2 is larger than or equal to 0 degree and smaller than or equal to 5 degrees. According to the cab in the embodiment of the invention, the front part of the cab can form a streamline cab structure with low wind resistance in a limited space, and the design of the cab with low wind resistance is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of driving, and particularly relates to a cab, a chassis and a light truck. BACKGROUND

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

[0003] Reducing the air resistance of the cab has attracted more and more attention because it can improve the product competitiveness of the whole vehicle product related to the cab. This is because the air resistance will increase significantly with the increase of the speed of the whole vehicle, 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

[0004] The application provides a cab, a chassis and a light truck, which form a streamlined cab structure with low wind resistance in the front part of the cab in a limited space, and realize the design of a low wind resistance cab.

[0005] The first aspect of the application provides a cab, which comprises a cab body, the cab body comprises a front part and side parts located on both sides of the front part, and the maximum size of the cab body in the X direction is L4, and the value range of L4 satisfies 1550mm≤L4≤1950mm. The front part comprises a windshield part, the windshield part is arranged to be inclined to the vertical plane and the inclination angle is α1, and the value range of α1 satisfies 15°≤α1≤25°, the front part further comprises a first zone part and a second zone part located below the windshield part in the Z direction, and the second zone part is located between the first zone part and the windshield part and is connected with the windshield part. In the Z direction, the second zone part 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 part to the vertical plane and the inclination angle α2 of the second zone part to the vertical plane satisfies 0°≤α1-α2≤5°.

[0006] According to any one of the preceding first aspect embodiments of the application, the inclination angle of the first zone part to the vertical plane is less than the inclination angle of the second zone part to the vertical plane, the inclination angle of the first zone part to the vertical plane is α3, and 0°≤α3≤10°.

[0007] According to any one of the preceding first aspect embodiments of the application, the front part further comprises a third zone part, in the Z direction, the third zone part is located above the windshield part and is connected with the windshield part, the third zone part 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°.

[0008] According to any one of the implementation manners of the first aspect of the application, the maximum dimension of the first section along the Z direction is L5, and the value range of L5 satisfies 320mm≤L5≤420mm.

[0009] According to any one of the implementation manners of the first aspect of the application, the maximum dimension of the cab along the Y direction is L7, and the value range of L7 satisfies 2120mm≤L7≤2220mm.

[0010] According to any one of the implementation manners of the first aspect of the application, the maximum dimension L4 of the cab body along the X direction satisfies 1600mm≤L4≤1900mm.

[0011] According to any one of the implementation manners of the first aspect of the application, the cab further comprises a door connected to the side portion and arranged openable relative to the side portion, the door 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 are respectively located on two sides of the center point of the wheel opening, and in the X direction, the distance between the front edge and the rear edge is L2, and the ratio of the distance L1 between the rear edge of the door and the center point of the wheel opening and the distance L2 between the front edge and the rear edge satisfies 0.65≤L1 / L2≤0.95.

[0012] According to any one of the implementation manners of the first aspect of the application, in the X direction, the value range of the distance L1 between the rear edge of the door and the center point of the wheel opening satisfies 630mm≤L1≤1030mm.

[0013] The second aspect embodiment of the application provides a chassis comprising the cab in the implementation manners of the first aspect, and the chassis further has front wheels and rear wheels, and the center of the front wheels is arranged coincident with the center of the wheel opening of the cab.

[0014] According to any one of the implementation manners of the second aspect of the application, in the X direction, the ratio of the length dimension L8 of the front suspension to the maximum dimension L4 of the cab body satisfies 0.38≤L8 / L4≤0.48, wherein the length dimension of the front suspension is the distance from the frontmost end of the front portion to the center point of the wheel opening in the X direction.

[0015] According to any one of the implementation manners of the second aspect of the application, the value range of the length dimension L8 of the front suspension satisfies 640mm≤L8≤840mm.

[0016] According to any one of the implementation manners of the second aspect of the application, the front portion of the cab is provided with a front bumper, and in the Z direction, the distance between the lowermost edge of the front bumper and the lower edge of the front wheel is L6, and the value range of L6 satisfies 220mm≤L6≤320mm.

[0017] The third aspect embodiment of the application provides a light truck comprising the cab in the implementation manners of the first aspect or the chassis in the implementation manners of the second aspect.

[0018] The application has at least the following beneficial effects:

[0019] The cab provided by the application comprises a cab body, the cab body comprises a front part and side parts located on both sides of the front part, the front part comprises a windshield part and a first region part and a second region part located below the windshield part in the Z direction, and the second region part is arranged between the first region part and the windshield part. The maximum dimension L4 of the cab body in the X direction satisfies the range of 1550mm≤L4≤1950mm. On this basis, by arranging the windshield part of the front part to be inclined relative to the vertical plane and the range of the inclination angle α1 satisfies 15°≤α1≤25°, and the difference between the inclination angle α1 of the windshield part relative to the vertical plane and the inclination angle α2 of the second region part relative to the vertical plane satisfies 0°≤α1-α2≤5°, the requirements of the driving length and the wind resistance design of the cab can be considered, so that the front part of the cab forms a streamlined cab structure with low wind resistance, and the low wind resistance cab design is realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings required to be used in the embodiments of the application will be briefly introduced as follows. Those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 The side view of the chassis provided by some embodiments of the application is shown;

[0022] Figure 2 The structural schematic diagram of the cab provided by some embodiments of the application is shown;

[0023] Figure 3 The side view of the cab provided by some embodiments of the application is shown;

[0024] Figure 4 The measurement schematic diagram of the inclination angle provided by some embodiments of the application is shown;

[0025] Figure 5 The top view of the cab provided by some embodiments of the application is shown;

[0026] Figure 6 The diagram of the inclination angle of the first region part provided by some embodiments of the application is shown;

[0027] Figure 7 The top view of the cab provided by some other embodiments of the application is shown;

[0028] Figure 8 The side view of the cab provided by some other embodiments of the application is shown;

[0029] Figure 9 A side view of a cab is shown according to some embodiments of the present application;

[0030] Figure 10 A side view of a cab omitting a door is shown according to some embodiments of the present application;

[0031] Figure 11 A side view of a cab is shown according to some embodiments of the present application;

[0032] Figure 12 A side view of a cab is shown according to some embodiments of the present application;

[0033] Figure 13 A structural schematic view of a steering mechanism is shown according to some embodiments of the present application;

[0034] Figure 14 A top view of a chassis is shown according to some embodiments of the present application.

[0035] Reference signs are explained as follows:

[0036] 100 - chassis; 10 - cab; 20 - front wheel; 30 - rear wheel;

[0037] 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; 2 - door; 3 - brake pedal; 4 - driver seat; 5 - steering mechanism; 51 - steering wheel; 52 - steering shaft; 53 - steering shaft support; 54 - steering tie rod; 55 - steering gear; 56 - steering arm;

[0038] S1 - wheelhouse section; S2 - step section.

[0039] In the drawings, the same components have the same reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0040] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. To make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. The present application can be implemented without some of the specific details by those skilled in the art. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0041] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0042] Referring to Figure 1 , Figure 1 A side view of a chassis 100 is shown.

[0043] The embodiments of the present application provide a light truck, which comprises a chassis 100 and a cargo box arranged on the chassis 100.

[0044] The light truck refers to a cargo vehicle provided with a cargo box, and according to relevant standards, specifically refers to a cargo vehicle with a total length less than 6000 mm in the X direction and a total mass less than 4500 kg.

[0045] The chassis 100 comprises a chassis 100 with a cab and a chassis 100 without a cab, that is, the light truck can comprise a chassis 100 with a cab and a cargo box, or a chassis 100 without a cab, a cargo box and a cab 10.

[0046] 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 power of the power system to the front wheels 20 and / or the rear wheels 30 to drive the light truck to travel.

[0047] It should be noted that the cab 10 in the embodiments of the present application can be used for the chassis 100 or the related whole vehicle product (for example, the light truck) of each of the above embodiments, and serves 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.

[0048] In the prior art, the windshield of the conventional flat-roof cab is nearly vertical, and the inclination angle is about 17°, so the positive pressure area of the front part of the conventional flat-roof cab is large, resulting in a large wind resistance coefficient of the cab as a whole or the whole vehicle (for example, the wind resistance coefficient reaches 0.57). Further, in the constant speed 90km / h driving condition, the power consumption caused by wind resistance accounts for more than 58%.

[0049] Therefore, reducing wind resistance is beneficial to reducing energy consumption and improving the competitiveness of the whole vehicle product.

[0050] Please refer to Figures 2 to 4 , Figure 2 A structural schematic diagram of a cab 10 provided by some embodiments of the present application is shown, Figure 3 A side view of the cab 10 provided by some embodiments of the present application is shown, Figure 4 A measurement schematic diagram of the inclination angle provided by some embodiments of the present application is shown.

[0051] The first aspect embodiment of the present application provides a cab 10, comprising a driver compartment body 1, the driver compartment body 1 comprising a front part 11 and side parts 12 located on both sides of the front part 11, the maximum dimension of the driver compartment body 1 along the X direction is L4, and the value range of L4 satisfies: 1550mm≤L4≤1950mm. The front part 11 comprises a windshield part 111, the windshield part 111 is arranged to be inclined to the vertical plane and the inclination angle is α1, and the value range of α1 satisfies: 15°≤α1≤25°, the front part 11 further comprises a first zone part 112 and a second zone part 113 located below the windshield part 111 in the Z direction, and the second zone part 113 is located between the first zone part 112 and the windshield part 111 and connected with the windshield part 111. In the Z direction, the second zone part 113 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 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°.

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

[0054] In the present application, the maximum dimension of the cab body 1 along the X direction refers to the distance from the front end of the cab body 1 to the rear end of the cab body 1 along the X direction, and can also refer to the dimension of the projection of the cab body 1 on the Y0 plane along the X direction.

[0055] It can be understood that the larger the maximum dimension L4 of the cab body 1, the more sufficient the space for man-machine arrangement in the cab and the space for low wind resistance design, but the size of the cargo box will be reduced. Conversely, the smaller the maximum dimension 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 and the space reserved for low wind resistance design are more limited.

[0056] Therefore, in the present application, by limiting the maximum dimension L4 of the cab body 1 along the X direction to between 1550mm and 1950mm, both the driving comfort and the size reserved for the cargo box and the space reserved for low wind resistance design can be avoided to be too small, so as to improve the carrying capacity of the whole vehicle product related to the cab (for example, a light truck) and reduce the energy consumption.

[0057] The inclination angle a1 of the windshield portion 111 relative to the vertical plane can be represented by the angle between the inclined line of the windshield portion 111 and the vertical line. The inclined line of the windshield portion 111 refers to the line connecting the first intersection point and the second intersection point, the first intersection point being the middle point of the lower edge of the windshield portion 111 along the Y direction, and the second intersection point being the intersection point formed by the first intersection point making a 457mm arc and the windshield portion 111.

[0058] It can be understood that the larger the inclination angle a1 of the windshield portion 111 relative to the vertical plane, the smaller the positive pressure on the cab, which is beneficial to reduce 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. Conversely, the smaller the inclination angle a1 of the windshield portion 111 relative to the vertical plane, the more conducive to man-machine arrangement and the reduction of 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.

[0059] 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 at a sufficient angle relative to the vertical plane 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 without being too large relative to the vertical plane, so that the interior space of the cab can meet the demand, so as to improve the comfort of the driver and the convenience of getting on and off the vehicle.

[0060] Further, the first section 112 can be a region where a front bumper is provided, and the second section 113 can be a region where a front panel is provided.

[0061] Similarly to the windshield section 111, the inclination angle a2 of the second section 113 relative to the vertical plane can be represented by the angle between the inclined line of the second section 113 and the vertical line. The inclined line of the second section 113 refers to the line connecting the third intersection point and the fourth intersection point, the third intersection point being the middle point of the lower edge of the second section 113 in the Y direction, and the fourth intersection point being the intersection point formed by the 457 mm circular arc with the third intersection point and the second section 113.

[0062] Since the smaller the difference between the inclination angle a1 of the windshield section 111 relative to the vertical plane and the inclination angle a2 of the second section 113 relative to the vertical plane, the closer the inclination angles of the windshield section 111 and the second section 113, i.e. the windshield angle, and the smaller the wind resistance coefficient, by making 0°≤a1-a2≤5°, the energy consumption of the cab 10 can be better reduced, and the cruising range and driving performance can be improved.

[0063] Based on this, in the cab in the embodiments of the present application, on the basis of limiting the maximum size L4 of the cab in the X direction to between 1550 mm and 1950 mm, by making the value range of the inclination angle a1 of the windshield section 111 relative to the vertical plane satisfy 15°≤a1≤25°, and making the difference between the inclination angle a1 of the windshield section 111 relative to the vertical plane and the inclination angle a2 of the second section 113 relative to the vertical plane satisfy 0°≤a1-a2≤5°, the cab front part can form a streamlined cab structure with low wind resistance while taking into account the driving length requirement, and the low wind resistance cab design is realized.

[0064] In one specific embodiment of the present application, a1=18°, 20° or 23°, so as to take into account the requirements of reducing wind resistance and reducing the demand for cab space, and improve the overall product competitiveness of the cab 10.

[0065] Please refer to Figures 1 to 5 , Figure 5 A diagram showing the inclination angle of the first section according to some embodiments of the present application is shown.

[0066] In some optional embodiments, the inclination angle of the first section 112 relative to the vertical plane is smaller than the inclination angle of the second section 113 relative to the vertical plane, and the inclination angle of the first section 112 relative to the vertical plane is a3, 0°≤a3≤10°.

[0067] It can be understood that the inclination angle of the first section 112 has an influence on both the wind resistance and the interior space of the cab. For example, the greater the inclination angle of the first section 112, the smaller the windward area of the front part of the cab, which is advantageous for reducing the wind resistance, but has a limited effect on the space for the man-machine arrangement (e.g., brake pedal, steering wheel, and other components) in the cab.

[0068] In an embodiment of the present application, with the maximum dimension of the cab 10 along the X direction being constant, by reducing the inclination angle a3 of the first section 112 relative to the vertical plane, the setting position of the second section 113 and the windshield section 111 along the X direction can be moved forward, so as to increase the interior space of the cab, facilitate the arrangement of functional components in the cab 10, and improve the comfort of the driver and the convenience of getting in and out of the cab.

[0069] 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 in the cab, facilitate the arrangement of the front bumper, and improve the crashworthiness of the cab 10.

[0070] Please refer to Figures 1 to 6 , Figure 6 A side view of the cab 10 provided by another embodiment of the present application is shown. In some alternative embodiments, the front part further comprises a third section 114, which is located above the windshield section 111 and connected to the windshield section 111 along the Z direction, and the third section 114 is inclined relative to the vertical plane with an inclination angle a4, and the value of a4 satisfies: 25°≤a4≤40°.

[0071] The third section 114 refers to the section above the windshield along the Z direction, and the third section 114 can be integrally arranged with the first section 112 and the second section 113 and serve as the roof of the cab 10, or the third section 114 can be separately arranged and form a fairing.

[0072] Similarly to the windshield section 111, the inclination angle a4 of the third section 114 relative to the vertical plane can be represented by the angle between the inclined line of the third section 114 and the vertical line. The inclined line of the third section 114 refers to the line connecting the sixth intersection point and the seventh intersection point, the sixth intersection point being the middle point of the lower edge of the third section 114 along the Y direction, and the seventh intersection point being the intersection point formed by the 457 mm circular arc with the sixth intersection point and the third section 114.

[0073] By setting the inclination angle a4 of the third section 114 to the vertical plane to be greater than or equal to 25°, the third section 114 can be inclined to the vertical plane by a sufficient angle to reduce the wind resistance coefficient and reduce the energy consumption of the cab 10. By setting the inclination angle a4 of the third section 114 to the vertical plane to be less than or equal to 40°, the third section 114 can be inclined to the vertical plane by 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.

[0074] In an embodiment of the present application, a4 is 30°, 33°, 35°, or 38°, so as to balance the reduction of the wind resistance coefficient and the driving requirements of the cab 10.

[0075] In some optional embodiments, the first section 112 of the cab is provided with a front bumper, and the maximum dimension of the first section 112 in the Z direction is L5, which satisfies the range: 320mm≤L5≤420mm. The maximum dimension of the first section 112 in the Z direction can be the dimension of the projection of the first section 112 in the Y0 plane in the Z direction.

[0076] Since the first section 112 is usually formed by the front bumper, the dimension of the first section 112 in 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 middle position of the front bumper in the Y direction. By setting the maximum dimension of the first section 112 in the Z direction to be greater than or equal to 320mm, the appearance of the cab 10 can be improved, and the height of the license plate that can be provided can be increased. Since the inclination angle a3 of the first section 112 to the vertical plane is smaller than the inclination angle a2 of the second section 113 to the vertical plane, by setting the maximum dimension of the first section 112 in the Z direction to be less than or equal to 420mm, the height of the first section 112 in the Z direction can be reduced, thereby reducing the area of the positive pressure zone of the front portion 11 of the cab 10 and reducing the wind resistance coefficient.

[0077] In an embodiment of the present application, L5 is 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.

[0078] In some optional embodiments, the distance between the lowermost edge of the front bumper and the lower edge of the front wheel 20 in the Z direction is L6, which satisfies the range: 220mm≤L6≤320mm.

[0079] 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 in the Z direction.

[0080] 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 passing ability 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 passing ability of the whole vehicle, but the ground clearance is increased, and the wind resistance is also increased, which is not conducive to reducing energy consumption. On the contrary, the smaller the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20, the smaller the wind resistance, which is conducive to improving the endurance mileage, but the passing ability of the whole vehicle is poor.

[0081] In an embodiment of the present application, 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 in the Z direction can be increased, the risk of the cab 10 colliding with the ground is reduced, and the cab 10 can drive on various road conditions. And 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 is not too large, the wind resistance coefficient is reduced, the energy consumption of the cab 10 is reduced, and the endurance mileage and driving performance are improved.

[0082] In some optional embodiments, the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is in the range of 235mm≤L6≤305mm. Further optionally, the distance L6 between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is in the range of 250mm≤L6≤290mm.

[0083] In a specific embodiment of the present application, L6=250mm, 270mm or 300mm, in order to reduce the wind resistance coefficient and meet the driving requirements of the cab 10.

[0084] Please refer to Figures 1 to 7 , Figure 7 A top view of the cab 10 provided by some embodiments of the present application is shown. In some optional embodiments, the maximum size of the cab in the Y direction is L7, and the value of L7 satisfies: 2120mm≤L7≤2220mm.

[0085] The maximum size of the cab body 1 in the Y direction refers to the distance from the leftmost end to the rightmost end of the cab body 1 in the Y direction, that is, the distance between the two side portions 12 of the cab body 1 in the Y direction. L7 can be the size measured along the Y direction of the projection of the two side portions 12 on the X0 plane.

[0086] Among them, the maximum size of the cab body 1 in the Y direction is related to the size of the cargo box in the Y direction, which can be equal to the size of the cargo box in the Y direction.

[0087] In one specific embodiment of the present application, the size of the cargo box along the Y direction is set to 2170 mm, and therefore the maximum size L7 of the cab body 1 is equal to 2170 mm, so that the surface of the side portion 12 of the cab body 1 is flush with the cargo box, so as to reduce the wind resistance coefficient.

[0088] In some optional embodiments, the maximum size L4 of the cab body along the X direction satisfies 1600 mm≤L4≤1900 mm. Further optionally, the maximum size L4 of the cab body 1 satisfies 1650 mm≤L4≤1850 mm. Further optionally, the maximum size L4 of the cab body 1 satisfies 1700 mm≤L4≤1800 mm.

[0089] In one specific embodiment of the present application, L4=1750 mm. With this size of the cab, not only can the cab man-machine arrangement space capable of meeting the driving comfort be obtained, but also sufficient design space can be reserved for the convenience of the driver getting on and off the vehicle, the shortening of the size of the cab 10, and the design of the streamlined cab, so that the convenience of getting on and off the vehicle, the shortening of the length of the cab, and the reduction of the wind resistance of the cab 10 can be considered, and thus the driving requirements can be considered and the load capacity can be improved.

[0090] It can be understood that, while the front portion 11 of the cab 10 is formed into a streamlined cab structure with low wind resistance in consideration of the requirements of the length of the cab and the design requirements of the wind resistance of the cab, the man-machine design of the cab 10 also needs to be optimized to improve the driving comfort and the convenience of getting on and off the vehicle on the basis of meeting the above wind resistance design.

[0091] In the existing cab man-machine design, only the driving comfort of the driver (or passenger) in the cab in a sitting position (such as man-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 usually considered, 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 with limited cab length or arrangement space.

[0092] Taking a light truck as an example, the regulations require that the overall length of such vehicles does not exceed 6 m, which means that the shorter the length of the cab, the longer the length of the cargo box, and the length of the cargo box directly affects the load capacity of the truck and the product competitiveness.

[0093] Therefore, for cabs with limited length of the cab 10 or limited arrangement 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 on and off the vehicle. However, by including the position of the front wheel 20 in the evaluation system of the convenience of the driver (or passenger) getting on and off the vehicle, the present application can conveniently and effectively solve the above problems.

[0094] Further, it is particularly important for the driver (or passenger) to consider the position of the front wheel 20 in the evaluation index of the convenience of getting on and off the vehicle, not only for the cab with limited cab length or layout space, but also for the streamlined cab designed with low wind resistance. Taking a light truck as an example, to a certain extent, the smaller the wind resistance, the more inclined the front windshield of the cab 10 is, and therefore, in order to ensure that the driver does not collide with the windshield that is excessively inclined and affect the driving comfort, the driver position needs to be moved backward as a whole, and the overall backward movement of the driver position directly leads to an increase in the cab length, which is not conducive to improving the load capacity and the competitiveness of the vehicle product. Therefore, for the cab with limited cab length or limited layout space, the inventor needs to make a lot of efforts to study how to arrange the cab man-machine to balance the driving comfort, the convenience of getting on and off the vehicle, and the low wind resistance performance, so as to further improve the load capacity of the truck and reduce the energy consumption, and improve the competitiveness of the vehicle product. Therefore, another aspect of the present application proposes a solution that can effectively solve the problem of the man-machine arrangement of the cab under the conditions of limited cab length or layout space and / or low wind resistance, so as to meet the driving comfort and the convenience of getting on and off the vehicle at the same time.

[0095] Based on this, the cab 10 in the embodiments of the present application considers the position of the front wheel as a parameter in the evaluation system of the convenience of getting on and off the vehicle, and more specifically, the position of the wheel center of the front wheel 20 is used to design the positions of the brake pedal, the door, the driver's seat, the steering wheel, and the like, so as to obtain a better solution of the cab man-machine arrangement that can meet the convenience of the driver getting on and off the vehicle, which is particularly important for trucks, especially light trucks.

[0096] Please refer to Figures 1 to 8 , Figure 8 A side view of the cab 10 provided by some embodiments of the present application is shown. In some alternative embodiments, the side portion 12 of the cab body 1 is provided with a wheel opening 121, which is used to cooperate with and is concentrically arranged with the front wheel 20. The cab 10 further comprises a brake pedal 3 arranged in the driver's cabin of the cab body 1, and 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, and the value of L9 satisfies: 10mm≤L9≤410mm.

[0097] In the formula, L9 can be the size measured along the X direction of 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.

[0098] When the brake pedal 3 is positioned at the position of the hub of the front wheel 20, the driver's sitting posture is designed by limiting the position of the brake pedal 3 relative to the center point of the wheel opening 121. Compared with the existing cab 10 of the light truck, by moving the brake pedal 3 backward, sufficient space can be left in the front part 11 of the cab 10, so that the front part 11 of the cab 10 forms a streamlined structure, realizing the design of the low-drag cab 10, thereby being able to reduce the wind resistance coefficient while ensuring getting on and off the vehicle, reducing energy consumption, and improving the cruising range of the cab 10.

[0099] It can be understood that the greater the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121, the closer the driver's seat position to the front wheel, and at this time the size of the step area for the driver to get on and off the vehicle will be reduced, which is not conducive to the convenience of the driver getting on and off the vehicle. On the contrary, the smaller the distance L9 between the center point of the brake pedal 3 and the center point of the wheel opening 121, the farther the driver's seat position from the front wheel, and at this time the size of the step area for the driver to get on and off the vehicle will be reduced, which is conducive to the convenience of the driver getting on and off the vehicle, but at the same time increases the overall length of the cab, which is not conducive to improving the load capacity of the vehicle.

[0100] 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 is not moved too much, thereby the driver's 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 load capacity of the light truck.

[0101] 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 satisfies 60mm≤L9≤360mm, and further optionally, the distance L9 between the center point of the wheel opening 121 and the center point of the brake pedal 3 satisfies 110mm≤L9≤310mm.

[0102] In a specific embodiment of the present application, L9=180mm, 210mm or 250mm, which can make the front part 11 reserve sufficient design space for the design of the streamlined cab, so that the front part 11 of the cab 10 forms a streamlined structure, realizing the design of the low-drag cab 10. And it can also improve the convenience of getting on and off the vehicle while reducing the driver's cabin space, thereby improving the performance of the cab 10.

[0103] Referring to Figures 1 to 10 , Figure 9 Fig. 2 shows a side view of the cab 10 according to some embodiments of the present application, Figure 10 Fig. 3 shows a side view of the cab 10 according to some embodiments of the present application, omitting the door 2.

[0104] In some alternative embodiments, the cab 10 further comprises a door 2 connected to the side portion 12 and operable to open or close a door opening 122 of the door 2 in the side portion 12, the door 2 comprising a front edge and a rear edge arranged along the X direction, the front edge and the rear edge of the door 2 being located on two sides of the center point of the wheel opening 121 along the X direction, and the distance L2 between the front edge and the rear edge of the door 2 along the X direction satisfying: 0.65≤L1 / L2≤0.95.

[0105] The side portion 12 is provided with a door opening 122 for the driver to get on or off the vehicle, and the door 2 is rotatably connected to the side portion 12 and covers the door opening 122, or the door 2 is slidably connected to the side portion 12 and covers the door opening 122. The door 2 can be a special-shaped structure, the front edge of the door 2 refers to the most forward edge along the X direction, and the rear edge of the door 2 refers to the most backward edge along the X direction. Generally, the most forward edge of the door corresponds to the most forward edge of the door opening of the door, and the pivot point of the door is generally arranged at the most forward edge of the door to enable full opening and utilization of the door opening of the door, and to improve the convenience of the driver getting on or off the vehicle.

[0106] In this context, 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 center point of the wheel opening 121 on the Y0 plane.

[0107] When the door 2 is designed and positioned at the position of the hub of the front wheel 20, the front edge and the rear edge of the door 2 are located on two sides of the center point of the wheel opening 121, i.e. 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, thereby improving the convenience of getting on and off the vehicle while fully ensuring the driver's field of view and operating space.

[0108] And, by making the ratio 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≤L1 / L2≤0.95, on the one hand, the front part 11 is left with enough space to make the cab 10 front part 11 form a streamlined structure, achieve 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. When the cab 10 is a fuel car, it can improve the fuel economy of the cab 10. When the cab 10 is an electric or hybrid car, it can reduce the power consumption of the cab 10. On the other hand, by setting L1 relatively large, the driver can be provided with more generous space to get on the vehicle, which is conducive to improving the convenience of getting on and off.

[0109] For the cab 10 in the above embodiments, when the ratio of L1 to L2 is less than 0.65, the door 2 is moved forward relative to the center of the front wheel 20, resulting in less space for getting on and off behind the front wheel, affecting the convenience of getting on and off. In addition, the door 2 is moved forward relative to the center of the front wheel 20, which makes it difficult for the cab 10 to form a streamlined structure in the front part 11, and the effect of reducing the wind resistance of the cab 10 is not obvious. When the ratio 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 of a certain overall length of the light truck, the length occupied by the cab 10 is too large, affecting the cargo space and making it difficult to meet the transportation needs of the light truck.

[0110] Therefore, by making the ratio a of L1 to L2 in the embodiments of the present application 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.

[0111] In some optional embodiments, in the X direction, the ratio 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: 0.75≤L1 / L2≤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 of the front wheel 20 and 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 be able to balance the convenience of getting on and off, shorten the length of the cab, and reduce the wind resistance of the cab 10.

[0112] In some optional embodiments, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 in the X direction is in the range of 630mm≤L1≤1030mm.

[0113] 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 the vehicle.

[0114] 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 for the driver to get on and off the vehicle, but it will also cause the overall length of the cab to increase, thereby directly affecting the load capacity; on the contrary, the smaller the distance between the rear edge of the door 2 and the center 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 for the driver to get on and off the vehicle is worse, and the space left for wind resistance design is smaller, which is difficult to realize low wind resistance design.

[0115] 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 be in the range of 630mm≤L1≤1030mm, on the one hand, a relatively appropriate step area S2 space can be met to improve the convenience for the driver to get on and off the vehicle, and on the other hand, the length of the cab 10 can be controlled within a reasonable range, so that the cargo box space is maximized under the condition of the overall length of the vehicle.

[0116] In some optional embodiments, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 is in the range of 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 is in the range of 780mm≤L1≤930mm, further optionally, the distance L1 between the rear edge of the door 2 and the center point of the wheel opening 121 is in the range of 780mm≤L1≤880mm. In these embodiments, not only the convenience for the driver to get 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, so that the convenience for getting on and off the vehicle, shortening the length of the cab, and reducing the wind resistance of the cab 10 can be considered, and the design compatibility is improved.

[0117] In a specific embodiment of the present application, L1=833mm, L2=1048mm, a=L1 / L2=0.795, the distances of the front edge and the rear edge of the door from the center point of the wheel opening 121 in the X direction can meet the space requirements of the cab 10 and 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.

[0118] Please refer to Figures 1 to 11 ,Figure 11 A 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, a center point of the driver seat 4 is located on a side of a 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.

[0119] 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.

[0120] When the driver seat 4 is positioned at the position of the wheel center of the front wheel 20, the sitting posture of the driver can be designed by limiting the position of the driver seat 4 relative to the center point of the wheel opening 121. Compared with the cab 10 of the existing light truck, by moving the driver seat 4 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 reducing the drag coefficient, reducing energy consumption, and improving the cruising range of the cab 10 while ensuring getting on and off the vehicle.

[0121] Specifically, the center point of the driver seat 4 is located on a 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≥365mm, so as to move the driving position rearward to form a streamlined structure in the front portion 11 and increase the size of the step area S2 in the X direction to facilitate the driver getting on and off the vehicle. Moreover, by limiting the distance between the center point of the driver seat 4 and the center point of the wheel opening 121 to L10≤765mm, the driving position is not moved too far rearward, so as to reduce the space of the driver cabin to increase the space of the cargo compartment under the condition that the size of the light truck is constant, thereby improving the cargo carrying performance of the light truck.

[0122] 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.

[0123] In one embodiment of the present application, L10 = 525 mm, 565 mm or 605 mm, which can leave a moderate space at the front 11 of the cab 10 to form a streamlined structure of the front 11 of the cab 10, so as to realize a low wind resistance cab 10 design. Also, the convenience of getting on and off the vehicle can be improved while reducing the space of the driving cavity, and the performance of the cab 10 can be improved.

[0124] Referring to Figures 1 to 12 , Figure 12 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 steering mechanism 5, which comprises a steering wheel 51 arranged in the driver's cabin, and the distance between the center point of the steering wheel 51 and the center point of the wheel opening 121 is L11, which satisfies the range: -65 mm≤L11≤335 mm. Wherein, L11 takes a negative value when the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 close to the front, and L11 takes a positive value when the center point of the steering wheel 51 is located on the side of the center point of the wheel opening 121 away from the front.

[0125] Wherein, L11 can be the size measured along the X direction of the projection of the center point of the steering wheel 51 on the Y0 plane and the projection of the center point of the wheel opening 121 on the Y0 plane.

[0126] When the steering mechanism 5 is positioned and designed at the position of the hub of the front wheel 20, the driver's sitting posture can be designed by limiting the position of the steering wheel 51 relative to the center point of the wheel opening 121. Compared with the existing cab 10 of a light truck, by moving the steering wheel 51 backward, sufficient space can be left at the front 11 of the cab 10 to form a streamlined structure of the front 11 of the cab 10, so as to realize a low wind resistance cab 10 design, and thus the wind resistance coefficient can be reduced, the energy consumption can be reduced, and the cruising range of the cab 10 can be improved while ensuring getting on and off the vehicle.

[0127] Specifically, the distance L11 between the center point of the steering wheel 51 and the center point of the wheel opening 121 is ≥-65 mm, which can move the driving position backward to form a streamlined structure at the front 11 and increase the size of the stepping area S2 along the X direction to facilitate the driver to get on and off the vehicle. Also, by making the distance L11 between the center point of the driver's seat 4 and the center point of the wheel opening 121 ≤335 mm, the driving position can not be moved too much, so as to reduce the space of the driving cavity to increase the cargo box space under the condition of a certain size of the light truck, and to improve the cargo carrying performance of the light truck.

[0128] In some optional 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 optionally, 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 optionally, 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.

[0129] 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 cab space, and improve the performance of the cab 10.

[0130] Please refer to Figures 1 to 14 , Figure 13 Fig. 1 shows a structural schematic diagram of a steering mechanism 5 provided by some embodiments of the present application, Figure 14 Fig. 2 shows a top view of a chassis 100 provided by some embodiments of the present application.

[0131] In some optional 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.

[0132] The steering mechanism 5 further comprises a steering pull rod 54, a steering gear 55, a steering rocker arm 56 and a steering bent arm, the steering gear 55 is fixedly arranged on the frame and located below the cab 10, the first end of the steering pull rod 54 is in transmission connection with the steering gear 55 through the steering rocker arm 56, and the second end of the steering pull rod 54 is connected to the front wheel 20 hub through the steering bent arm. The length L13 of the steering pull rod 54 along the X direction satisfies: 440mm≤L13≤540mm.

[0133] Compared with the existing light truck, the relative position relationship between the brake pedal 3 and the center point of the wheel opening 121 in the light truck of the present application is adjusted, that is, the steering wheel 51 is arranged forwardly relative to 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 forwardly, the front wheel 20 hub can be moved forwardly, 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. In one embodiment, the length L13 of the steering pull rod 54 along the X direction is 470mm, 490mm or 510mm.

[0134] It can be understood that, while the length L13 of the turning rod 54 in the X direction is adjusted accordingly, the length dimension L8 of the front overhang of the cab 10 is further compressed.

[0135] In some alternative 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 satisfies: 0.38≤L8 / L4≤0.48; wherein the length dimension of the front overhang is the distance from the frontmost end of the front portion to the center point of the wheel opening 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 of the cab and the wheel center (or the center of the wheel opening) of the front wheel 20 on the Y0 plane.

[0136] It can be understood that, the smaller the length dimension L8 of the front overhang, the smaller the front cabin arrangement space, but the better the passability of the corresponding vehicle, and the larger the human-machine space left for the cab, 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 length dimension L8 of the front overhang, the worse the passability of the corresponding vehicle, and the smaller the human-machine space left for the cab, which is not conducive to the driver getting on and off the vehicle, but is beneficial to the front cabin arrangement space.

[0137] 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 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 the design of the streamlined cab while ensuring that the passability requirement is met. Further alternatively, in the X direction, the ratio of the length dimension L8 of the front overhang to the maximum dimension L4 of the cab body satisfies: 0.40≤L8 / L4≤0.45. For example, L8 / L4=0.40, L8 / L4=0.42 or L8 / L4=0.45.

[0138] In one specific embodiment of the present application, L8 / L4=0.42, the above setting can simultaneously meet the vehicle passability requirement, the cargo carrying demand and the convenience of the driver getting on and off the vehicle.

[0139] In some alternative embodiments, in the X direction, the length dimension L8 of the front overhang of the cab 10 satisfies: 640mm≤L8≤840mm. Further alternatively, in the X direction, the length dimension L8 of the front overhang satisfies: 690mm≤L8≤790mm.

[0140] In one specific embodiment, the length dimension L8 of the front overhang is 700mm, 720mm, 740mm or 760mm.

[0141] It can be understood that, under the condition that the size of the chassis 100 along the X direction is constant, the length size L8 of the front suspension of the cab 10 is adjusted, and the length size L8 of the front suspension of the cab 10 and the wheelbase size L14 of the chassis 100 are also redistributed.

[0142] In some optional embodiments, the chassis 100 further comprises a rear wheel 30 arranged on the frame and spaced apart from the front wheel 20 along the X direction. Wherein, the ratio of the length size 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.

[0143] Wherein, 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.

[0144] 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 size L8 of the front suspension of the cab 10 and the wheelbase size L14 of the chassis 100 can also be redistributed, that is, on the basis of the length size L8 of the front suspension of the cab 10 being shortened, the wheelbase size L14 of the chassis 100 can be increased.

[0145] Wherein, 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 embodiment, 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 size L14 of the chassis 100 can also 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.

[0146] In some optional embodiments, the wheelbase L14 satisfies 3360mm≤L14≤4000mm.

[0147] The specific value of the wheelbase L14 is related to the length size 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. And 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.

[0148] In one embodiment of the present application, L14=3450mm, 3750mm or 3950mm, and when L14=3750mm, the power battery capacity can be expanded from 100kWh to 120kWh. In addition, the chassis with the cab in the low wind resistance form provided by the above-mentioned embodiments of the present application can reduce energy consumption by more than 20%.

[0149] In summary, please refer to Figures 1 to 14 Taking the cab in one embodiment of the present application as an example, the specific structure of the cab 10 provided by the embodiments of the present application is described.

[0150] 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 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, and the wheel openings 121 are used to cooperate with and are concentrically arranged with the front wheels 20.

[0151] 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 L8=740mm.

[0152] 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, and 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 one side of the center point of the wheel opening 121 towards the front part 11 and the distance between the center point of the brake pedal 3 and the center point of the wheel opening 121 is L9=210mm. And / or, the cab 10 further includes a driver's seat 4, and in the X direction, the center point of the driver's seat 4 is located on one side of the center point of the wheel opening 121 away from the front part 11 and the distance between the center point of the driver'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, and in the X direction, the center point of the steering wheel 51 is located on one side of the center point of the wheel opening 121 close to the front part 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.

[0153] Further, the front part 11 includes a windshield part 111, the windshield part 111 is arranged to be inclined to the vertical plane and the inclination angle α1=20°, the front part 11 further includes 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.

[0154] Further, the minimum dimension of the first section 112 along the Z direction is L5=370mm, and the distance between the lowermost edge of the first section 112 and the lower edge of the front wheel 20 is L6=270mm.

[0155] 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-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%.

[0156] Therefore, the cab, chassis 100 and light truck according to the embodiments of the present application have the advantages of small cabin space, high convenience for getting on and off, low wind resistance coefficient and low energy consumption, and are more convenient for popularization and application.

[0157] The above is merely a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described herein. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements shall be covered within the protection scope of the present application.

Claims

1. A cab characterized in that, The application relates to a cab, comprising: a cab body, comprising a front part and side parts on both sides of the front part; the maximum size of the cab body in the X direction is L4, and the value range of L4 satisfies 1550mm<=L4<=1950mm; the front part comprises a windshield part, the windshield part is arranged to be inclined to the vertical plane, and the inclination angle is alpha1, the value range of alpha1 satisfies 15<=alpha1<=25; the front part further comprises a first section and a second section below the windshield part in the Z direction, the second section is located between the first section and the windshield part and is connected with the windshield part; in the Z direction, the second section is arranged to be inclined to the vertical plane, and the inclination angle is alpha2, the difference between the inclination angle alpha1 of the windshield part to the vertical plane and the inclination angle alpha2 of the second section to the vertical plane satisfies 0<=alpha1-alpha2<=5.

2. The cab of claim 1, wherein, the inclination angle of the first section to the vertical plane is smaller than the inclination angle of the second section to the vertical plane, the inclination angle of the first section to the vertical plane is alpha3, and 0<=alpha3<=10.

3. The cab of claim 1, wherein, the front part further comprises a third section, in the Z direction, the third section is located above the windshield part and is connected with the windshield part, the third section is arranged to be inclined to the vertical plane, and the inclination angle is alpha4, the value range of alpha4 satisfies 25<=alpha4<=40.

4. The cab of claim 1, wherein, the maximum size of the first section in the Z direction is L5, and the value range of L5 satisfies 320mm<=L5<=420mm.

5. The cab of claim 1, wherein, the maximum size of the cab in the Y direction is L7, and the value range of L7 satisfies 2120mm<=L7<=2220mm.

6. The cab of claim 1, wherein, the value range of the maximum size L4 of the cab body in the X direction satisfies 1600mm<=L4<=1900mm.

7. Cab according to any of claims 1 - 6, characterized in that the side part of the cab body is provided with a wheel opening, the wheel opening is used for matching with a front wheel and is arranged concentrically with the front wheel; the cab further comprises a door, the door is connected to the side part, the door comprises a front edge and a rear edge arranged in 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 opening respectively, and in the X direction, the distance between the front edge and the rear edge of the door is L2, and the ratio 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 0.65<=L1 / L2<=0.

95.

8. The cab of claim 7, wherein, in the X direction, the value range of the distance L1 between the rear edge of the door and the center point of the wheel opening satisfies 630mm<=L1<=1030mm.

9. A chassis characterized by, The application relates to a cab, comprising: the cab as claimed in any one of claims 1 to 8, the chassis further has a front wheel and a rear wheel, and the center of the front wheel is arranged to coincide with the center of the wheel opening of the cab.

10. The base pan of claim 9, wherein, in the X direction, the ratio of the length size L8 of the front suspension to the maximum size L4 of the cab body satisfies 0.38<=L8 / L4<=0.48; wherein the length size of the front suspension is the distance from the frontmost end of the front part to the center point of the wheel opening in the X direction.

11. The base pan of claim 10, wherein, The length dimension L8 of the front overhang satisfies: 640mm≤L8≤840mm.

12. The base pan of claim 10, 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 in the Z direction is L6, which satisfies: 220mm≤L6≤320mm.

13. A pickup truck characterized by The cab comprises the cab as claimed in any one of claims 1 to 8, or the chassis as claimed in any one of claims 9 to 12.

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