Frame, lower vehicle body, vehicle body structure and vehicle

Abstract

The utility model provides a vehicle frame, a lower vehicle body, a vehicle body structure and a vehicle. The frame comprises a front cabin and a chemical cabin; the chemical cabin comprises longitudinal beams extending in the front-back direction and cross beams connected with the longitudinal beams, the extending direction of the cross beams intersects with the front-back direction, and the longitudinal beams are provided with top side faces at the tops in the height direction; the front cabin comprises a torsion box connected with the front end of the longitudinal beam, a cavity is formed in the torsion box, and the torsion box comprises a first connecting part detachably connected with the top side face of the longitudinal beam. The cavity is formed in the torsion box, so that the weight of the front cabin is reduced, and the cost is reduced; a first connecting part is formed on the torsion box of the front cabin, so that the torsion box can be detachably connected with the top side surface of the longitudinal beam of the chemical cabin, and the difficulty of detachable connection between the torsion box and the chemical cabin is reduced.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and more specifically, relates to a vehicle frame, a lower vehicle body, a vehicle body structure, and a vehicle. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become a crucial component of this sustainable development. For ease of maintenance, the front compartment of the vehicle frame and the chemical chamber are often connected with bolts. However, for front compartments with internal cavities, the presence of the cavity makes it difficult to removably connect the torque box to the chemical chamber. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a vehicle frame, a lower body, a vehicle body structure and a vehicle to improve the problem in the related art that the internal cavity torque box is difficult to detachably connect with the chemical cabin.

[0004] In a first aspect, an embodiment of the present application provides a vehicle frame comprising a front cabin and a chemical cabin;

[0005] The chemical cabin includes longitudinal beams extending in the front-rear direction and transverse beams connecting the longitudinal beams, wherein the extending direction of the transverse beams intersects the front-rear direction, and the longitudinal beams have a top side surface along the top in the height direction;

[0006] The front cabin includes a torsion box connected to the front end of the longitudinal beam, a cavity is provided in the torsion box, and the torsion box includes a first connecting portion detachably connected to the top side surface of the corresponding longitudinal beam.

[0007] In the technical solution of the embodiment of the present application, a cavity is provided in the torsion box to reduce the weight of the front cabin and reduce the cost; and a first connecting portion is formed on the torsion box of the front cabin to facilitate a detachable connection with the top side surface of the longitudinal beam of the chemical cabin, thereby reducing the difficulty of the detachable connection between the torsion box and the chemical cabin.

[0008] In some embodiments, the vehicle frame includes a first fastener, which passes through the longitudinal beam from bottom to top along the height direction and is detachably connected to the first connecting portion.

[0009] The first fastener is used to connect the longitudinal beam and the first connecting part from bottom to top. The first fastener does not need to pass through the cavity in the first connecting part, which makes the connection convenient. Moreover, it is only necessary to provide a connecting structure that is compatible with the first fastener on the first connecting part, which can be detachably connected to the first fastener so that the first fastener can detachably connect the longitudinal beam and the first connecting part.

[0010] In some embodiments, the first fastener includes a first bolt threadedly connected to the first connecting portion.

[0011] The first fastener uses a first bolt, which has a simple structure, a stable and convenient connection, and a low cost.

[0012] In some embodiments, a first reinforcement portion is correspondingly provided on the first connection portion, and the first reinforcement portion is provided with a first threaded hole adapted to connect with a first bolt.

[0013] A first reinforcing portion is provided on the first connecting portion, and a first threaded hole is provided on the first reinforcing portion so as to be connected with the first bolt, and the first bolt can be firmly connected to the first connecting portion.

[0014] In some embodiments, the first reinforcement portion includes a first nut mounted on the first connecting portion, the first nut being located in the cavity, a first through hole being provided on the first connecting portion at the first nut, an inner hole of the first nut forming a first threaded hole, and the first bolt being threadedly connected to the first nut;

[0015] And / or, the first reinforcement portion includes a first thickened area provided on the first connection portion in an area corresponding to the first bolt, the thickness of the first thickened area is greater than the thickness of other areas of the first connection portion, and the first thickened area is provided with a first threaded hole.

[0016] A first nut is provided in the cavity, and a first through hole is correspondingly provided on the first connecting portion to connect the first bolt. The structure is simple and the cost is low. During the process of manufacturing the torque box, the first nut can be fixed to the first connecting portion, which facilitates manufacturing.

[0017] Providing the first thickened area corresponding to the first connecting portion not only increases the structural strength of the first connecting portion, but also allows the first threaded hole to be directly made on the first connecting portion, thereby reducing the number of components and facilitating processing.

[0018] In some embodiments, the longitudinal beam has side surfaces located on the left and right sides respectively, and the torsion box includes a second connection portion detachably connected to at least one side surface of the longitudinal beam.

[0019] The torsion box is provided with a second connection portion to facilitate detachable connection with the side surface of the longitudinal beam, and can increase the structural strength of the connection. In addition, the provision of the second connection portion can also increase the structural strength of the torsion box, thereby improving the overall structural strength of the frame.

[0020] In some embodiments, the vehicle frame includes a second fastener that passes through the longitudinal beam and is detachably connected to the second connecting portion.

[0021] The second fastener is used to pass through the longitudinal beam and the second connecting part, and there is no need for the second fastener to pass through the cavity in the second connecting part, which makes the connection convenient. Moreover, it is only necessary to set a connecting structure that is compatible with the second fastener on the second connecting part, which can be detachably connected to the second fastener, so that the second fastener can detachably connect the longitudinal beam and the second connecting part.

[0022] In some embodiments, the second fastener includes a second bolt threadedly connected to the second connecting portion.

[0023] The second fastener uses a second bolt, which has a simple structure, a stable and convenient connection, and a low cost.

[0024] In some embodiments, a second reinforcing portion is correspondingly provided on the second connecting portion, and the second reinforcing portion is provided with a second threaded hole adapted to connect with a second bolt.

[0025] A second reinforcing portion is provided on the second connecting portion, and a second threaded hole is provided on the second reinforcing portion so as to be connected with the second bolt, and the second bolt can be firmly connected to the second connecting portion.

[0026] In some embodiments, the second reinforcement portion includes a second nut mounted on the second connecting portion, the second nut is located in the cavity, a second through hole is provided on the second connecting portion at the second nut, an inner hole of the second nut forms a second threaded hole, and the second bolt is threadedly connected to the second nut;

[0027] And / or, the second reinforcement portion includes a second thickened area provided on the second connection portion in an area corresponding to the second bolt, the thickness of the second thickened area is greater than the thickness of other areas of the second connection portion, and the second thickened area is provided with a second threaded hole.

[0028] A second nut is set in the cavity, and a second through hole is correspondingly set on the second connecting part to connect the second bolt. The structure is simple and the cost is low. During the process of making the torque box, the second nut can be fixed to the second connecting part, which is easy to make.

[0029] The second thickened area is correspondingly provided at the second connecting portion, which not only increases the structural strength of the second connecting portion but also allows the second threaded hole to be directly made on the second connecting portion, thereby reducing the number of parts and facilitating processing.

[0030] In some embodiments, a first edge plate protrudes outward from the edge of the torsion box.

[0031] Providing a first edge plate on the torsion box can improve the structural strength of the torsion box.

[0032] In some embodiments, the first edge plate includes a first edge portion at a position corresponding to the top side surface, the first edge portion is formed by extending backward from the first connecting portion, the first edge portion is provided with a first through hole, and a second through hole is opened on the longitudinal beam at a position corresponding to the first through hole.

[0033] Providing the first edge portion can increase the contact area between the torsion box and the top side surface of the longitudinal beam, so as to facilitate the positioning and connection of the torsion box and the top side surface in the height direction. In addition, the first edge portion is formed by extending rearward from the first connecting portion, and the structural strength of the first connecting portion can be reinforced by the first edge portion. A first through hole is provided on the first edge portion, and a second through hole is correspondingly provided on the longitudinal beam, so that a fastener can be used to pass through the second through hole and the first through hole to connect to the vehicle body.

[0034] In some embodiments, the first edge plate includes a second edge portion adapted to be detachably connected to a side surface of one side of the longitudinal beam.

[0035] Providing the second edge portion can increase the contact area between the torsion box and the corresponding side surface of the longitudinal beam, so as to facilitate the positioning connection between the torsion box and the side surface in the left and right directions, and facilitate the detachable connection with the corresponding side surface of the longitudinal beam.

[0036] In some embodiments, the vehicle frame includes a third fastener that passes through the second edge portion in the left-right direction and is detachably connected to the longitudinal beam.

[0037] A third fastener is provided, and the third fastener passes through the second edge portion in the left-right direction and is detachably connected to the longitudinal beam. A widening portion that widens toward the side away from the second edge portion can be provided on the top of the longitudinal beam to increase the width of the top side surface of the longitudinal beam, which is convenient for connection with the upper vehicle body. There is no need to destroy the widening portion, and the widening portion has good structural strength, which is convenient for connection with the upper vehicle body and also facilitates the detachable connection between the longitudinal beam and the second edge portion.

[0038] In some embodiments, the third fastener includes a third bolt threadedly connected to the longitudinal beam.

[0039] The third fastener uses a third bolt, which has a simple structure, a stable and convenient connection and a low cost.

[0040] In some embodiments, the longitudinal beam is provided with a first inner cavity extending along its length direction, and a third reinforcement portion is correspondingly provided on the longitudinal beam, and the third reinforcement portion is provided with a third threaded hole adapted to connect a third bolt.

[0041] Providing a first inner cavity in the longitudinal beam can reduce the weight of the longitudinal beam, thereby reducing the weight of the frame and reducing costs; providing a third reinforcement portion on the longitudinal beam, and providing a third threaded hole on the third reinforcement portion to connect with a third bolt, and the third bolt can be firmly connected to the longitudinal beam.

[0042] In some embodiments, the third reinforcement portion includes a third nut, the third nut is located in the first inner cavity, a third through hole is provided on the longitudinal beam at the third nut, an inner hole of the third nut forms a third threaded hole, and the third bolt is threadedly connected to the third nut;

[0043] And / or, the third reinforcement portion includes a first reinforcement plate, the first reinforcement plate is located in the first inner cavity, a third threaded hole is provided on the first reinforcement plate, and a third through hole is provided on the longitudinal beam corresponding to the third threaded hole.

[0044] A third nut is arranged in the first inner cavity, and a third through hole is correspondingly arranged on the longitudinal beam to connect the third bolt, which has a simple structure and low cost.

[0045] The first reinforcing plate is correspondingly provided on the longitudinal beam, which not only increases the structural strength of the longitudinal beam, but also facilitates the production of the third threaded hole on the longitudinal beam, thereby facilitating processing.

[0046] In some embodiments, the front cabin further includes a connecting beam connected to the torsion box, and the cavity extends into the connecting beam.

[0047] A connecting beam is provided in the front cabin to improve the structural strength of the front cabin, and the cavity extends into the connecting beam, which can reduce the weight of the front cabin, reduce the use of materials and reduce costs.

[0048] In some embodiments, the connecting beam has a second edge plate extending rearwardly, the cross beam includes a front cross beam connected to the front end portion of the longitudinal beam, and the second edge plate is detachably connected to the upper surface of the front cross beam.

[0049] Providing a second edge plate on the rear side of the connecting beam can increase the structural strength of the connecting beam, thereby improving the structural strength of the front cabin; and the second edge plate is detachably connected to the upper surface of the front cross beam of the chemical cabin, which facilitates the connection and can improve the connection strength between the front cabin and the chemical cabin, thereby improving the structural strength of the frame.

[0050] In some embodiments, the vehicle frame includes a fourth fastener that detachably connects the front cross beam and the second edge plate along a height direction.

[0051] The fourth fastener is used to connect the front cross beam and the second edge plate along the height direction, which has a simple structure and is convenient for connection.

[0052] In some embodiments, the fourth fastener passes through the second edge plate from top to bottom and is connected to the front cross beam.

[0053] The fourth fastener is passed from top to bottom through the second edge plate and connected to the front cross beam. The connection is convenient and there is no need to set a structure on the second edge plate to adapt to the connection with the fourth fastener, which facilitates the processing and manufacturing of the second edge plate and the front cabin.

[0054] In some embodiments, the vehicle frame includes a subframe and a bracket. The subframe includes a longitudinal beam extending in the front-rear direction. The bracket is provided with a cavity for inserting the longitudinal beam. The bracket is connected to the connecting beam.

[0055] A bracket is provided, the bracket is connected to the connecting beam, and a cavity is provided on the bracket. The longitudinal beam of the auxiliary frame is inserted into the cavity, so that the auxiliary frame and the connecting beam can be connected, and the connection is convenient.

[0056] In some embodiments, the vehicle frame includes a fifth fastener, which passes through the bracket and the corresponding longitudinal beam and is detachably connected to the connecting beam.

[0057] The fifth fastener is used and passes through the bracket and the corresponding longitudinal beam to be detachably connected to the connecting beam, thereby strengthening the connection strength between the subframe and the connecting beam and better fixing the subframe. The fifth fastener is detachably connected to the connecting beam, which facilitates disassembly and maintenance.

[0058] In some embodiments, the bracket is provided with first adapting portions on opposite sides of the cavity, respectively, and the first adapting portions are detachably connected to the connecting beam.

[0059] The first adapter portion is provided so as to be connected to the connecting beam, and the connection is convenient; and the first adapter portion is detachably connected to the connecting beam, and can be conveniently disassembled for maintenance.

[0060] In some embodiments, the vehicle frame includes a sixth fastener that passes through the first adapter portion and is detachably connected to the connecting beam.

[0061] A sixth fastener is provided to pass through the first adapter portion and be detachably connected to the connecting beam, which is convenient for connection and disassembly for maintenance.

[0062] In some embodiments, the bracket is provided with second adapting portions on opposite sides of the cavity, respectively, and the second adapting portions are detachably connected to the front surface of the front crossbeam.

[0063] A second adapter portion is provided to be connected to the front cross beam to connect the bracket to the front cross beam so as to more stably fix the bracket, thereby better connecting the bracket to the longitudinal beam of the subframe; and the bracket is connected to the connecting beam, and the connection strength between the connecting beam and the front cross beam can be improved through the bracket; the second adapter portion is detachably connected to the front cross beam, which can facilitate maintenance.

[0064] In some embodiments, the vehicle frame includes a seventh fastener, which passes through the second adapter portion and is detachably connected to the front cross beam.

[0065] A seventh fastener is provided to pass through the second adapter portion and be detachably connected to the front cross beam, which is convenient for connection and disassembly for maintenance.

[0066] In some embodiments, the torsion box and the connecting beam are formed by splicing plates.

[0067] The torsion box and the connecting beam are spliced ​​by plates, which are simple to manufacture and low in cost. Moreover, a variety of materials can be used, which is convenient for processing and manufacturing.

[0068] In a second aspect, an embodiment of the present application provides a lower vehicle body comprising a vehicle frame as described in the above embodiment.

[0069] In a third aspect, an embodiment of the present application provides a vehicle body structure, including a vehicle frame as in the above embodiment or a lower vehicle body as in the above embodiment.

[0070] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising a frame as in the above embodiment, a lower body as in the above embodiment, or a body structure as in the above embodiment.

[0071] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0073] Figure 1 A schematic structural diagram of a vehicle according to some embodiments of the present application;

[0074] Figure 2 Schematic diagram of the exploded structure of a battery device according to some embodiments of the present application;

[0075] Figure 3 This is a schematic structural diagram of the combination of the front cabin and the chemical cabin in the vehicle frame of some embodiments of the present application;

[0076] Figure 4 for Figure 3 Enlarged view of part A;

[0077] Figure 5 for Figure 3 A schematic diagram of the structure with an angle showing the separation of the mid-forward cabin and the chemical cabin;

[0078] Figure 6 for Figure 5 A schematic diagram of a partially enlarged structure of the connection between the first connecting portion and the second connecting portion and the longitudinal beam;

[0079] Figure 7 A schematic structural diagram of a first nut provided on a first connecting portion in some embodiments of the present application;

[0080] Figure 8This is a structural diagram of a first connecting portion provided with a first thickened area in some embodiments of the present application;

[0081] Figure 9 for Figure 5 A schematic diagram of a partially enlarged structure of the connection between the second edge portion and the longitudinal beam;

[0082] Figure 10 for Figure 3 Schematic diagram of the structure from another angle showing the separation of the mid-forward cabin and the chemical cabin;

[0083] Figure 11 for Figure 10 A schematic diagram of a partially enlarged structure of the connection between the second edge portion and the longitudinal beam;

[0084] Figure 12 for Figure 10 A schematic diagram of the partially enlarged structure of the connection between the second edge plate and the front crossbeam;

[0085] Figure 13 This is a schematic structural diagram of the front cabin, chemical cabin and sub-frame in the vehicle frame of some embodiments of the present application;

[0086] Figure 14 for Figure 10 Schematic diagram of the partial structure of the connection between the center support, longitudinal beam, connecting beam and front cross beam.

[0087] Among them, the main marks of the drawings in the figure are:

[0088] 100. Vehicle; 101. Vehicle body structure; 110. Lower vehicle body; 120. Upper vehicle body;

[0089] 200, vehicle frame; 201, chemical chamber; 21, longitudinal beam; 210, side beam; 2101, first inner cavity; 2102, widened portion; 211, top side; 2111, second through hole; 212, bottom side; 213, side surface; 2130, third through hole; 2131, inner side; 2132, outer side; 215, third reinforcement; 2150, third threaded hole; 2151, first reinforcement plate; 22, cross beam; 221, front cross beam; 2211, fourth through hole;

[0090] 203, front compartment; 2030, cavity; 23, torque box; 231, first connecting portion; 2310, first through hole; 2311, first reinforcement portion; 23110, first threaded hole; 23111, first nut; 23112, first thickened area; 232, second connecting portion; 2321, second through hole; 233, first edge plate; 2331, first edge portion; 23311, first through hole; 2332, second edge portion; 2333, third edge portion; 24, connecting beam; 241, second edge plate; 251, first tightening portion Fastener; 2511, first bolt; 252, second fastener; 2521, second bolt; 253, third fastener; 2531, third bolt; 254, fourth fastener; 2541, fourth bolt; 255, fifth fastener; 2551, fifth bolt; 256, sixth fastener; 2561, sixth bolt; 257, seventh fastener; 2571, seventh bolt; 261, top plate; 262, bottom plate; 263, side plate; 27, bracket; 270, cavity; 271, first adapter; 272, second adapter;

[0091] 205, subframe; 2051, longitudinal beam;

[0092] 300, battery device; 30, housing; 31, top cover; 32, bottom cover; 33, frame; 34, reinforcement beam; 341, mounting beam; 342, expansion beam; 301, battery cell;

[0093] 400, motor; 500, controller;

[0094] X, front-to-back direction; F, front; B, back; Y, left-to-right direction; R, right; L, left; Z, height direction; U, top; D, bottom. DETAILED DESCRIPTION

[0095] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0096] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0097] In the description of the embodiments of this application, the technical terms "first," "second," etc., are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance, or to implicitly specify the quantity, specific order, or primary-secondary relationship of the technical features indicated. Therefore, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features.

[0098] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments in any suitable manner.

[0099] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0100] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0101] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0102] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more (including two groups), and "multiple sheets" refers to two or more (including two sheets). "Several" means one or more, unless otherwise specifically defined.

[0103] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0104] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0105] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0106] In the description of the embodiments of this application, unless otherwise specified or limited, the technical term "adjacent" refers to proximity in position. For example, if there are three components A1, A2, and B, and the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is adjacent to B, or B is adjacent to A2. For another example, when there are multiple components C, the multiple components C are C1, C2, ..., C N , when one of the C components, such as C2, is closer to the B component than other C components, then B is adjacent to C2, or it can be said that C2 is adjacent to B.

[0107] Vehicles are commonly used means of transportation. Vehicles include body structures. With the development of vehicles, the body structures are constantly improved to adapt to new vehicle development trends and needs.

[0108] The body structure of a vehicle usually includes the body structure, power structure, interior components, etc. In order to alleviate the problems of difficult assembly and low production efficiency, the body structure can be divided into an upper body and a lower body; the upper body and the lower body can be manufactured separately and then assembled. The upper body mainly includes the A-pillar, B-pillar, C-pillar, front and rear panels, front and rear doors, etc. The lower body mainly consists of the body floor, frame, etc. The frame is the main support and load-bearing structure of the lower body. For ease of assembly, the frame usually consists of three sections: the front cabin, the chemical cabin, and the rear cabin. Some frames will also include a subframe to connect to the vehicle's suspension system, and the subframe is usually connected to the front cabin.

[0109] The chemical cabin is also called the battery cabin or the middle cabin. For electric vehicles, the battery device is usually installed or integrated in the chemical cabin. In particular, the module-free power battery pack technology (Cell to Pack, CTP) directly integrates the battery device into the chemical cabin, or directly integrates the battery cell into the chemical cabin, so that the chemical cabin forms a battery device. The front cabin is connected to the front of the chemical cabin to support the front side of the chemical cabin. In addition, the front cabin is also used to transfer the front collision load. The rear cabin is connected to the rear of the chemical cabin to support the rear side of the chemical cabin. In addition, the rear cabin has the important function of placing the spare tire and reducing the damage to the fuel tank and reducing passenger injuries by its own deformation during the rear collision. In order to facilitate the assembly and maintenance of the battery, the chemical cabin and the front cabin are often detachably connected using fasteners such as bolts, so that only the chemical cabin can be disassembled during disassembly and maintenance.

[0110] In the related art, bolts are typically used to achieve a removable connection between the high-pressure cast front cabin and the chemical cabin. This is because the high-pressure cast front cabin is an overall cast structure with reinforcing ribs, with various parts being plate-like structures. For example, the torsion box portion of the front cabin is cast with a torsion box-like shape, while the outer surface wall is a plate-like structure with multiple ribs formed on the plate-like structure to increase structural strength. This structure facilitates inserting bolts into the torsion box to bolt the plate-like wall to the chemical cabin, achieving a removable connection.

[0111] However, for the front cabin with a cavity structure inside, it is difficult for the bolts to extend into the cavity due to the obstruction of the cavity side walls, which makes it difficult for the torsion box of the front cabin to be detachably connected to the chemical cabin.

[0112] Based on the above considerations, and to address the difficulty in removably connecting a cavity-equipped torsion box to a chemical chamber in the related art, an embodiment of the present application provides a vehicle frame having a cavity provided within the torsion box to reduce weight and lower costs. The chemical chamber includes a longitudinal beam, and the torsion box includes a first connecting portion that is removably connected to the top side of the longitudinal beam. Specifically, the torsion box is provided with a first connecting portion that mates with the top side of the longitudinal beam to achieve removable connection to the top side of the longitudinal beam, thereby reducing the difficulty of removably connecting the torsion box to the longitudinal beam and facilitating removable connection of the front cabin to the chemical chamber.

[0113] For the convenience of description, the following embodiments are described using a vehicle as an example.

[0114] Please refer to Figure 1 , Figure 1This is a schematic structural diagram of a vehicle 100 provided for some embodiments of the present application. The vehicle 100 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. The vehicle 100 includes a body structure 101, and the body structure 101 includes an upper body 120 and a lower body 110. The upper body 120 is connected to the lower body 110 to facilitate assembly and improve assembly efficiency. Moreover, the upper body 120 and the lower body 110 can be manufactured separately to facilitate processing and manufacturing and reduce the difficulty of manufacturing the body structure 101. The lower body 110 includes a frame 200, which supports the upper body 120.

[0115] The vehicle 100 is internally provided with a battery device 300, which can be located at the bottom, front, or rear of the vehicle 100. The battery device 300 can be used to power the vehicle 100, for example, as an operating power source for the vehicle 100. The vehicle 100 also includes a controller 500 and a motor 400. The controller 500 is used to control the battery device 300 to power the motor 400, for example, to meet the power requirements of starting, navigating, and driving the vehicle 100.

[0116] In some embodiments, the battery device 300 can serve not only as an operating power source for the vehicle 100 , but also as a driving power source for the vehicle 100 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100 .

[0117] Please refer to Figure 2 In one embodiment of the present application, a battery device 300 is provided. The battery device 300 may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 301, which are connected in series, parallel, or in series-parallel connection via a busbar.

[0118] In the embodiment of the present application, the battery cell 301 may be a secondary battery. A secondary battery refers to a battery cell 301 that can be continuously used by activating active materials by charging after the battery cell 301 is discharged.

[0119] The battery cell 301 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiment of the present application.

[0120] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 301 .

[0121] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 301 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 301 with a cable tie.

[0122] In some embodiments, the battery device 300 may be a battery pack, which includes a case 30 and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0123] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 30 by fixing the battery module in the box body 30 .

[0124] As an example, the battery cell assembly may also be housed in the box body 30 by directly fixing the plurality of battery cells 301 to the box body 30 .

[0125] In some embodiments, the housing 30 may include a top cover 31, a frame 33, and a bottom cover 32. The top cover 31 and the bottom cover 32 are connected to opposite sides of the frame 33, respectively, to form an enclosed space within the housing 30 for accommodating the battery cells 301. The frame 33 refers to the portion of the structure that forms the peripheral sidewalls of the housing 30, the top cover 31 refers to the plate-like structure that forms the top of the housing 30, and the bottom cover 32 refers to the plate-like structure that forms the bottom of the housing 30.

[0126] In some embodiments, the housing 30 may include a first housing and a second housing, which interlock to form an enclosed space within the housing 30 to accommodate the battery cells 301. Enclosed here means covered or closed, and can be either sealed or unsealed. The first housing may be the top cover 31 or the bottom cover 32 of the housing 30. The first housing and the second housing may also be hollow structures with one side open, with the open side of the first housing covering the open side of the second housing.

[0127] In some embodiments, the box 30 includes a reinforcement beam 34 connected to the frame 33. The reinforcement beam 34 is a structural member provided on the box 30 to increase the structural strength of the box 30. The reinforcement beam 34 is provided and connected to the frame 33 to enhance the structural strength of the box 30.

[0128] In some embodiments, the reinforcing beam 34 includes a mounting beam 341 . The mounting beam 341 is fixedly connected to the frame 33 and is used to connect to an external device that uses the battery device 300 to support the battery device 300 on the device.

[0129] In some embodiments, the reinforcing beam 34 includes an expansion beam 342 . The expansion beam 342 is installed inside the box body 30 to increase the structural strength of the box body 30 and can also be used to support the battery cell 301 to limit the expansion deformation of the battery cell 301 .

[0130] In some embodiments, the expansion beam 342 may also be connected to the bottom plate 262 of the box body 30 to better fix the expansion beam 342 in the box body 30 .

[0131] See also Figure 3 、 Figure 5 、 Figure 6 、 Figures 9 to 13 According to some embodiments of the present application, a vehicle frame 200 is provided. The directions of up, down, front, back, left, and right are all based on the orientation of the vehicle 100. That is, the direction from the front of the vehicle to the rear of the vehicle is the front-to-back direction, the direction from the roof to the bottom of the vehicle is the top-to-bottom direction, and the driver's seat and the passenger seat are arranged along the left-right direction. For example, the front-to-back direction of the vehicle 100 is also referred to as the length direction, the front-to-back direction of the vehicle 100 is referred to as the X direction, the left-to-right direction of the vehicle 100 is also referred to as the width direction, the left-to-right direction of the vehicle 100 is referred to as the Y direction, and the height direction of the vehicle 100 is also referred to as the up-down direction. The height direction of the vehicle 100 is referred to as the Z direction. Accordingly, in the front-to-back direction X of the vehicle 100, the forward direction refers to the direction facing forward of the vehicle 100, i.e., the forward direction is the F direction; the rearward direction refers to the direction facing backward of the vehicle 100, i.e., the rearward direction is the B direction; in the left-to-right direction Y of the vehicle 100, the rightward direction refers to the direction facing right of the vehicle 100, i.e., the right direction is the R direction; the leftward direction refers to the direction facing left of the vehicle 100, i.e., the left direction is the L direction. In the height direction Z of the vehicle 100, the upward direction refers to the direction facing upward of the vehicle 100, i.e., the upward direction is the U direction; the downward direction refers to the direction facing downward of the vehicle 100, i.e., the downward direction is the D direction. The up, down, front, back, left, and right directions of the vehicle frame 200 are consistent with the corresponding up, down, front, back, left, and right directions of the vehicle 100. In addition, for the frame 200, the longitudinal direction is along the front-to-back direction X, and of course a certain error or small angle offset, such as an offset within 10 degrees, can be allowed; the transverse direction is along the left-right direction Y, and of course a certain error or small angle offset, such as an offset within 10 degrees, can be allowed.

[0132] See also Figures 3 to 14According to some embodiments of the present application, the embodiments of the present application provide a vehicle frame 200, including a front cabin 203 and a chemical cabin 201; the chemical cabin 201 includes a longitudinal beam 21 extending along the front-to-back direction X and a cross beam 22 connecting the longitudinal beam 21, the extension direction of the cross beam 22 intersects with the front-to-back direction X, and the longitudinal beam 21 has a top side surface 211 at the top along the height direction Z; the front cabin 203 includes a torsion box 23 connected to the front end of the longitudinal beam 21, a cavity 2030 is provided in the torsion box 23, and the torsion box 23 includes a first connecting portion 231 detachably connected to the top side surface 211 of the longitudinal beam 21.

[0133] The chemical compartment 201 , also known as the battery compartment or the middle compartment, refers to the beam structure in the middle section of the vehicle frame 200 . The chemical compartment 201 is used to support or integrate the battery device 300 .

[0134] The longitudinal beam 21 refers to a beam extending along the front-to-back direction X. There can be one or more longitudinal beams 21, and "a plurality" refers to a number greater than two. When there is one longitudinal beam 21, the cross beam 22 is connected and supported by one longitudinal beam 21. When there are multiple longitudinal beams 21, the two longitudinal beams 21 on both sides along the left-right direction Y can be called side beams 210, and the two side beams 210 constitute the supporting beams on the left and right sides of the chemical cabin 201. The longitudinal beam 21 can be a beam structure made of materials such as aluminum, steel, and fiber. The longitudinal beam 21 can be a beam with a central cavity structure inside, such as a profile part, a plate splicing part, or a solid beam such as a die-cast or forged part.

[0135] The crossbeam 22 refers to a beam connected to the longitudinal beam 21, and the extension direction of which intersects with the front-to-back direction X. For example, the crossbeam 22 may extend along the left-right direction Y. Of course, the extension direction of the crossbeam 22 may also have a certain angle with the left-right direction Y, such as an angle less than 20 degrees. In the case of one longitudinal beam 21, the crossbeam 22 is connected to the longitudinal beam 21; and in the case of multiple longitudinal beams 21, the two ends of the crossbeam 22 are respectively connected to the two side beams 210 to form the skeleton structure of the chemical cabin 201. The crossbeam 22 may be a beam structure made of materials such as aluminum, steel, and fiber. The crossbeam 22 may be a beam with a central cavity structure inside, such as a profile part, a plate assembly part, or a solid beam part such as a die-cast or forged part.

[0136] There can be one or more crossbeams 22. Providing a single crossbeam 22 to connect the longitudinal beams 21 can simplify the structure. Providing multiple crossbeams 22, each connected to the longitudinal beams 21, can enhance the overall structural strength of the chemical chamber 201. "Multiple" refers to two or more.

[0137] Since the longitudinal beams 21 are arranged along the front-to-back direction X, and the cross beams 22 connect the longitudinal beams 21, and the extension direction of the cross beams 22 intersects the extension direction of the longitudinal beams 21, the cross beam 22 at the frontmost side can be called the front cross beam 221. If there is only one cross beam 22, it is the front cross beam 221; if there are multiple cross beams 22, the cross beam 22 at the frontmost side is the front cross beam 221.

[0138] The top side surface 211 refers to the end surface of the longitudinal beam 21 at the top along the height direction Z, and is also the top surface of the longitudinal beam 21. The side surface 213 refers to the side surface of the longitudinal beam 21 in the left-right direction. When there are multiple longitudinal beams 21, the inner side surface 2131 refers to the side surface of the side beam 210 on the side closest to the other side beam 210, such as the surface on the right side of the side beam 210 on the left, and the surface on the left side of the side beam 210 on the right. The outer side surface 2132 refers to the surface of the side beam 210 opposite to the inner side surface 2131, and is also the side surface of the side beam 210 on the side facing away from the other side beam 210, such as the surface on the left side of the side beam 210 on the left, and the surface on the right side of the side beam 210 on the right. The surface of the longitudinal beam 21 opposite to the top side surface 211 is the bottom side surface 212, which is also the bottom surface of the longitudinal beam 21, that is, the end surface of the longitudinal beam 21 at the bottom along the height direction Z.

[0139] The front compartment 203 refers to a beam structure in the vehicle frame 200 that is used to transmit the front collision load. The front compartment 203 is connected to the chemical compartment 201 to support the front side of the chemical compartment 201.

[0140] The torsion box 23 refers to the portion of the longitudinal beam 21 on the front cabin 203 that connects to the chemical cabin 201. It is used to support the chemical cabin 201 and transmit torque. The torsion box 23 is a box-shaped structure made of high-strength materials such as aluminum alloy, high-strength steel, and carbon fiber. It generally consists of side panels 263, a bottom panel 262, and a top panel 261. These panels are assembled together through welding, riveting, or bolting to form a sturdy closed or semi-closed structure, thereby forming a cavity 2030 within the torsion box 23. That is, the cavity 2030 is the chamber space formed within the torsion box 23 to reduce the weight of the torsion box 23. Of course, the torsion box 23 can also be formed by combining a casting and a plate. For example, a plate can be placed over the side of the casting where the ribs are located and can be connected to at least some of the ribs to enhance the structural strength of the torsion box 23. In this way, a cavity 2030 is also formed between the ribs.

[0141] There are usually two torsion boxes 23, located on the left and right sides of the front cabin 203, and are respectively used to connect the two longitudinal beams 21 on the left and right sides of the chemical cabin 201, such as connecting the two side beams 210 of the chemical cabin 201, so as to connect the front cabin 203 with the chemical cabin 201. As an example, when the chemical cabin 201 has one longitudinal beam 21, the torsion box 23 can also be set to one accordingly. As an example, when the chemical cabin 201 has two longitudinal beams 21, the number of torsion boxes 23 can be two; when the chemical cabin 201 has three or more longitudinal beams 21, the number of torsion boxes 23 can be two, three or more, that is, the number of torsion boxes 23 can be less than or equal to the number of longitudinal beams 21.

[0142] The first connection portion 231 refers to a portion formed on the torsion box 23 that is adapted to connect to the top side surface 211 of the longitudinal beam 21. The first connection portion 231 that is adapted to the top side surface 211 of the longitudinal beam 21 is formed on the torsion box 23 to facilitate detachable connection of the first connection portion 231 to the longitudinal beam 21. As an example, since the first connection portion 231 is adapted to the top side surface 211, a snap-fitting method can be used, that is, corresponding snap-fitting structures are provided on the first connection portion 231 and the top side surface 211, respectively, to achieve snap-fitting of the first connection portion 231 to the top side surface 211, thereby detachably connecting the first connection portion 231 to the top side surface 211. As an example, a pin can be provided on the plate that makes the first connection portion 231, and after the pin is inserted into the longitudinal beam 21, a locking member such as a snap ring is used to lock the pin to achieve detachable connection of the first connection portion 231 to the top side surface 211. Of course, as an example, the first connection portion 231 can also be detachably connected to the top side surface 211 using fasteners such as bolts. Therefore, since the first connection portion 231 is adapted to the top side surface 211, the first connection portion 231 and the top side surface 211 can be detachably connected in a variety of ways, which can greatly reduce the difficulty of detachably connecting the torque box 23 and the chemical chamber 201, and facilitate detachable connection.

[0143] In the technical solution of the embodiment of the present application, a cavity 2030 is provided in the torsion box 23 to reduce the weight of the front cabin 203 and reduce the cost; and a first connecting portion 231 is formed on the torsion box 23 of the front cabin 203 to facilitate a detachable connection with the top side surface 211 of the longitudinal beam 21 of the chemical cabin 201, thereby reducing the difficulty of the detachable connection between the torsion box 23 and the chemical cabin 201.

[0144] In some embodiments, see Figure 3 、 Figures 5 to 8 The vehicle frame 200 includes a first fastener 251 , which passes through the longitudinal beam 21 from bottom to top along the height direction Z and is detachably connected to the first connecting portion 231 .

[0145] The first fastener 251 is a detachable fastener used to connect the longitudinal beam 21 and the first connecting portion 231. The first fastener 251 can be a bolt; or other structures, such as a shaft with an elastic member connected to one end and a slot at the other end. When used, the shaft can be installed on the longitudinal beam 21, and one end of the elastic member is fixed to the longitudinal beam 21. The elastic member can push the shaft to rotate and reset. The corresponding first connecting portion 231 is provided with a locking hole. During the process of inserting the shaft into the locking hole, the action of the locking hole and the side wall of the shaft rotates the shaft, and the elastic member accumulates force. When the slot reaches the slot and the side wall of the slot enters the slot, the elastic member releases the stored force, pushing the shaft to reverse, causing the slot to engage with the side wall of the slot, thereby achieving the locking connection between the first connecting portion 231 and the longitudinal beam 21. When disassembling, the shaft can be disengaged from the locking hole by rotating the shaft or the elastic member. Of course, the shaft member may not be provided with an elastic member, and the shaft member can be connected and disconnected from the first connecting portion 231 by rotating the shaft member manually or using a tool. The first fastener 251 can be made of a material with a certain structural strength, such as aluminum alloy or steel, which can meet the required strength requirements for the connection between the first connecting portion 231 and the longitudinal beam 21.

[0146] The first fastener 251 may be one or more, such as two, three, four, five, etc. When there are multiple first fasteners 251, the multiple first fasteners 251 cooperate to connect the first connecting portion 231 to the longitudinal beam 21, which can reduce the structural strength requirements of each first fastener 251 and thus reduce costs.

[0147] The first fastener 251 passes through the longitudinal beam 21 from bottom to top along the height direction Z to be detachably connected to the first connecting portion 231. This means that the first fastener 251 passes through the longitudinal beam 21 from bottom to top to be detachably connected to the first connecting portion 231, thereby detachably connecting the longitudinal beam 21 to the first connecting portion 231. For example, a through hole can be provided in the longitudinal beam 21 along the height direction Z for the first fastener 251 to pass through for detachably connecting to the first connecting portion 231. For another example, for the longitudinal beam 21 having the first inner cavity 2101, the through hole on the bottom side surface 212 of the longitudinal beam 21 can be set larger so that the lower end of the first fastener 251 extends into the first inner cavity 2101, and the side wall where the top side surface 211 of the longitudinal beam 21 is located is connected to the first connecting portion 231; of course, a sleeve can also be set in the first inner cavity 2101 of the longitudinal beam 21 to be sleeved on the first fastener 251, and the side wall where the top side surface 211 and the side wall where the bottom side surface 212 of the longitudinal beam 21 are located are supported by the sleeve, and only the upper end of the first fastener 251 passes through the longitudinal beam 21 and is connected to the first connecting portion 231.

[0148] The first fastener 251 is used to connect the longitudinal beam 21 and the first connecting portion 231 from bottom to top. The first fastener 251 does not need to pass through the cavity 2030 in the first connecting portion 231, which makes the connection convenient. Moreover, it is only necessary to set a connecting structure that is compatible with the first fastener 251 on the first connecting portion 231, which can be detachably connected to the first fastener 251, so that the first fastener 251 can detachably connect the longitudinal beam 21 and the first connecting portion 231.

[0149] In some embodiments, see Figure 3 、 Figures 5 to 8 The first fastener 251 includes a first bolt 2511 , and the first bolt 2511 is threadedly connected to the first connecting portion 231 .

[0150] The first bolt 2511 is a detachable bolt used to connect the longitudinal beam 21 to the first connecting portion 231. When there are multiple first fasteners 251, each first fastener 251 may be a first bolt 2511, or some of the first fasteners 251 may be first bolts 2511.

[0151] The first fastener 251 uses a first bolt 2511 , which has a simple structure, a stable and convenient connection, and a low cost.

[0152] In some embodiments, see Figure 3 、 Figures 5 to 8 A first reinforcing portion 2311 is correspondingly provided on the first connecting portion 231 , and the first reinforcing portion 2311 is provided with a first threaded hole 23110 adapted to connect with the first bolt 2511 .

[0153] The first reinforcement portion 2311 refers to a reinforcing structure provided on the first connecting portion 231 at a position corresponding to the first bolt 2511. For example, the first reinforcement portion 2311 may be a plate or block attached to the first connecting portion 231, or may be a reinforcement of the first connecting portion 231 itself, such as by increasing the thickness, providing ribs, or using a higher-strength material in the corresponding area.

[0154] The first threaded hole 23110 refers to a hole structure with threads at least partially provided on the inner wall.

[0155] Since the first bolt 2511 is used to detachably connect the first connecting part 231 and the longitudinal beam 21, it is necessary to set a first threaded hole 23110 on the first connecting part 231, which will inevitably lead to a decrease in structural strength. The provision of the first reinforcement part 2311 can increase the structural strength of the portion corresponding to the first threaded hole 23110, so as to at least partially offset the decrease in structural strength of the first connecting part 231 caused by the provision of the first threaded hole 23110, so as to ensure a stable connection with the first bolt 2511.

[0156] A first reinforcing portion 2311 is provided on the first connecting portion 231 , and a first threaded hole 23110 is provided on the first reinforcing portion 2311 to connect with the first bolt 2511 , so as to ensure a stable connection between the first bolt 2511 and the first connecting portion 231 .

[0157] In some embodiments, see Figure 3 、 Figures 5 to 7 The first reinforcement portion 2311 includes a first nut 23111 installed on the first connecting portion 231, the first nut 23111 is located in the cavity 2030, a first through hole 2310 is provided on the first connecting portion 231 at the first nut 23111, the inner hole of the first nut 23111 forms a first threaded hole 23110, and the first bolt 2511 is threadedly connected to the first nut 23111.

[0158] First nut 23111 is a nut provided on first connecting portion 231 and used to connect first bolt 2511. Positioning first nut 23111 within cavity 2030 reduces space usage, fully utilizes the space within cavity 2030, and facilitates the fit of first connecting portion 231 to top side 211. Specifically, before manufacturing torque box 23, first nut 23111 can be installed on the structural member corresponding to first connecting portion 231, which is then connected to other panels to form the box-shaped torque box 23 structure.

[0159] A first nut 23111 is provided in the cavity 2030 , and a first through hole 2310 is correspondingly provided on the first connecting portion 231 to connect the first bolt 2511 . The structure is simple and the cost is low. During the process of manufacturing the torque box 23 , the first nut 23111 can be fixed to the first connecting portion 231 , which facilitates manufacturing.

[0160] In some embodiments, see Figure 3 、 Figure 5 、 Figure 6 and Figure 8 The first reinforcement portion 2311 includes a first thickened area 23112 arranged in an area corresponding to the first bolt 2511 on the first connection portion 231. The thickness of the first thickened area 23112 is greater than the thickness of other areas of the first connection portion 231. The first thickened area 23112 is provided with a first threaded hole 23110.

[0161] The first thickened region 23112 is located on the first connecting portion 231 and is located in the area connected to the first bolt 2511. The first thickened region 23112 is thicker than other areas of the first connecting portion 231. The increased thickness enhances the structural strength of the first thickened region 23112, thereby forming the first reinforcement portion 2311.

[0162] The first thickened area 23112 can be an area on the first connecting part 231 corresponding to the connection of the first bolt 2511, which protrudes into the cavity 2030 to increase the thickness, fully utilize the space in the cavity 2030, reduce the occupied space, and facilitate the adaptation of the first connecting part 231 to the top side surface 211.

[0163] The first thickened area 23112 is correspondingly provided on the first connecting portion 231 , which not only increases the structural strength of the first connecting portion 231 , but also allows the first threaded hole 23110 to be directly formed on the first connecting portion 231 , thereby reducing the number of components and facilitating processing.

[0164] In some embodiments, see Figure 3 、 Figures 5 to 8 , when the first thickened area 23112 is provided on the first connecting portion 231 , a first nut 23111 can be provided on the first thickened area 23112 to further increase the structural strength of the portion of the first connecting portion 231 connected to the first bolt 2511 .

[0165] In some embodiments, see Figure 3 、 Figure 5 and Figure 6 The torsion box 23 includes a second connection portion 232 detachably connected to at least one side surface 213 of the longitudinal beam 21 .

[0166] The second connection portion 232 refers to a portion formed on the torsion box 23 that is adapted to connect with the side surface 213 of the longitudinal beam 21. The second connection portion 232 is formed on the torsion box 23 to be adapted to the side surface 213 of the longitudinal beam 21, so as to facilitate detachable connection between the second connection portion 232 and the longitudinal beam 21. For example, since the second connection portion 232 is adapted to the side surface 213, a snap-fitting method can be employed, i.e., corresponding snap-fitting structures are provided on the second connection portion 232 and the side surface 213, respectively, to achieve snap-fit ​​connection between the second connection portion 232 and the side surface 213, thereby detachably connecting the second connection portion 232 and the side surface 213. For example, a pin can be provided on the plate forming the second connection portion 232. After the pin is inserted into the longitudinal beam 21, a locking member such as a snap ring can be used to lock the pin, thereby detachably connecting the second connection portion 232 to the side surface 213. Of course, as an example, the second connection portion 232 can also be detachably connected to the side surface 213 using fasteners such as bolts. Therefore, since the second connection portion 232 is adapted to the side surface 213, the second connection portion 232 and the side surface 213 can be detachably connected in a variety of ways, which can greatly reduce the difficulty of detachably connecting the torque box 23 and the chemical chamber 201, and facilitate detachable connection.

[0167] As an example, the torsion box 23 may be provided with a second connection portion 232 to be adapted and detachably connected to the side surface 213 of one side of the longitudinal beam 21. As an example, the torsion box 23 may be provided with two second connection portions 232 to be adapted and detachably connected to the two side surfaces 213 of the longitudinal beam 21, respectively.

[0168] As an example, the torsion box 23 may be provided with a second connection portion 232, and when the longitudinal beam 21 includes two side beams 210, the second connection portion 232 may be adapted to be detachably connected to the inner side surface 2131 of the side beam 210. Of course, as an example, the torsion box 23 may be provided with a second connection portion 232, and when the longitudinal beam 21 includes two side beams 210, the second connection portion 232 may be adapted to be detachably connected to the outer side surface 2132 of the side beam 210.

[0169] The torque box 23 is provided with a second connecting portion 232 to facilitate a detachable connection with the side surface 213 of the longitudinal beam 21 and to increase the structural strength of the connection. In addition, the provision of the second connecting portion 232 can also increase the structural strength of the torque box 23, thereby improving the overall structural strength of the frame 200.

[0170] In some embodiments, see Figure 3 、 Figure 5 and Figure 6 The vehicle frame 200 includes a second fastener 252 , which passes through the longitudinal beam 21 and is detachably connected to the second connecting portion 232 .

[0171] The second fastener 252 is a detachable fastener used to connect the longitudinal beam 21 and the second connecting portion 232. The second fastener 252 can be a bolt; or other structures, such as a shaft with an elastic member connected to one end and a slot at the other end. When used, the shaft can be installed on the longitudinal beam 21, and one end of the elastic member is fixed to the longitudinal beam 21. The elastic member can push the shaft to rotate and reset. A corresponding locking hole is provided on the second connecting portion 232. During the process of inserting the shaft into the locking hole, the shaft rotates through the action of the locking hole and the side wall of the shaft, and the elastic member accumulates force. When the slot reaches the slot and the side wall of the slot enters the slot, the elastic member releases the stored force, pushing the shaft to reverse, causing the slot to engage with the side wall of the slot, thereby achieving the clamping connection between the second connecting portion 232 and the longitudinal beam 21. When disassembling, the shaft can be disengaged from the locking hole by rotating the shaft or the elastic member. Of course, the shaft member may not be provided with an elastic member, and the shaft member can be connected and disconnected from the second connecting portion 232 by rotating the shaft member manually or using a tool. The second fastener 252 can be made of a material with a certain structural strength, such as aluminum alloy or steel, which can meet the required strength requirements for the connection between the second connecting portion 232 and the longitudinal beam 21.

[0172] The second fastener 252 may be one or more, such as two, three, four, five, etc. When there are multiple second fasteners 252, the plurality of second fasteners 252 cooperate to connect the second connecting portion 232 to the longitudinal beam 21, which can reduce the structural strength requirements of each second fastener 252 and thus reduce costs.

[0173] The second fastener 252 passes through the longitudinal beam 21 and is detachably connected to the second connecting portion 232. For example, the second fastener 252 can pass through the longitudinal beam 21 in the left-right direction Y to be detachably connected to the second connecting portion 232, thereby detachably connecting the longitudinal beam 21 to the second connecting portion 232. For example, a through hole can be provided in the longitudinal beam 21 along the left-right direction Y for the second fastener 252 to pass through, thereby detachably connecting to the second connecting portion 232. For another example, for the longitudinal beam 21 having a first inner cavity 2101, the through hole on the side surface 213 of the longitudinal beam 21 facing away from the second connecting portion 232 can be set to be larger, so that the end of the second fastener 252 away from the second connecting portion 232 extends into the first inner cavity 2101, and the side wall of the side surface 213 of the longitudinal beam 21 close to the second connecting portion 232 is connected to the second connecting portion 232; of course, a sleeve can also be set in the first inner cavity 2101 of the longitudinal beam 21 to be sleeved on the second fastener 252, and the side walls on the left and right sides of the longitudinal beam 21 can be supported by the sleeve, while only one end of the second fastener 252 passes through the longitudinal beam 21 and is connected to the second connecting portion 232.

[0174] The second fastener 252 is used to pass through the longitudinal beam 21 and the second connecting portion 232. There is no need for the second fastener 252 to pass through the cavity 2030 in the second connecting portion 232. The connection is convenient, and only a connecting structure that is compatible with the second fastener 252 needs to be provided on the second connecting portion 232. It can be detachably connected to the second fastener 252, so that the second fastener 252 can detachably connect the longitudinal beam 21 and the second connecting portion 232.

[0175] In some embodiments, see Figure 3 、 Figure 5 and Figure 6 The second fastener 252 includes a second bolt 2521 , and the second bolt 2521 is threadedly connected to the second connecting portion 232 .

[0176] The second bolt 2521 is a detachable bolt used to connect the longitudinal beam 21 and the second connecting portion 232. When there are multiple second fasteners 252, each second fastener 252 can be a second bolt 2521, or some of the second fasteners 252 can use the second bolt 2521.

[0177] The second fastener 252 uses a second bolt 2521 , which has a simple structure, a stable and convenient connection, and a low cost.

[0178] In some embodiments, a second reinforcing portion is correspondingly provided on the second connecting portion 232 , and the second reinforcing portion is provided with a second threaded hole adapted to connect with the second bolt 2521 .

[0179] The second reinforcement portion refers to a reinforcing structure provided on the second connecting portion 232 at a position corresponding to the second bolt 2521. For example, the second reinforcement portion may be a plate or block attached to the second connecting portion 232, or may be a reinforcement of the second connecting portion 232 itself, such as by increasing the thickness, providing ribs, or using a higher-strength material in the corresponding area.

[0180] The second threaded hole refers to a hole structure in which threads are at least partially provided on the inner wall.

[0181] Since the second bolt 2521 is used to detachably connect the second connecting part 232 and the longitudinal beam 21, a second threaded hole needs to be provided on the second connecting part 232, which will inevitably lead to a decrease in structural strength. The provision of a second reinforcement portion can increase the structural strength of the portion corresponding to the second threaded hole, so as to at least partially offset the decrease in structural strength of the second connecting part 232 caused by the provision of the second threaded hole, so as to ensure a stable connection with the second bolt 2521.

[0182] A second reinforcing portion is provided on the second connecting portion 232 , and a second threaded hole is provided on the second reinforcing portion so as to be connected with the second bolt 2521 , and the second bolt 2521 can be firmly connected to the second connecting portion 232 .

[0183] In some embodiments, see Figure 3 、 Figures 5 to 8 The second reinforcement portion includes a second nut installed on the second connecting portion 232, the second nut is located in the cavity 2030, a second through hole 2321 is provided on the second connecting portion 232 at the second nut, the inner hole of the second nut forms a second threaded hole, and the second bolt 2521 is threadedly connected to the second nut.

[0184] The second nut is provided on the second connecting portion 232 and is used to connect the second bolt 2521. The second nut is placed in the cavity 2030 to reduce space usage, fully utilize the space within the cavity 2030, and facilitate the fit of the second connecting portion 232 to the side surface 213 of the longitudinal beam 21. Specifically, before fabricating the torsion box 23, the second nut can be installed on the structural member corresponding to the second connecting portion 232, which is then connected to other panels to form the box-shaped torsion box 23 structure.

[0185] A second nut is provided in the cavity 2030 , and a second through hole 2321 is correspondingly provided on the second connecting portion 232 to connect the second bolt 2521 . The structure is simple and the cost is low. During the process of manufacturing the torque box 23 , the second nut can be fixed to the second connecting portion 232 , which facilitates manufacturing.

[0186] In some embodiments, see Figure 3 、 Figures 5 to 8 The second reinforcement portion includes a second thickened area set on the second connecting portion 232 corresponding to the second bolt 2521, the thickness of the second thickened area is greater than the thickness of other areas of the second connecting portion 232, and the second thickened area is provided with a second threaded hole.

[0187] The second thickened area refers to the area on the second connecting portion 232 connected to the second bolt 2521 and is thicker than other areas on the second connecting portion 232. By increasing the thickness, the structural strength of the second thickened area is improved, thereby forming a second reinforcement portion.

[0188] The second thickened area can be the area on the second connecting part 232 corresponding to the connection of the second bolt 2521, which protrudes into the cavity 2030 to increase the thickness, make full use of the space in the cavity 2030, reduce the occupied space, and facilitate the adaptation of the second connecting part 232 to the top side surface 211.

[0189] The second thickened area is provided corresponding to the second connecting portion 232 , which not only increases the structural strength of the second connecting portion 232 , but also allows a second threaded hole to be directly made on the second connecting portion 232 , thereby reducing the number of components and facilitating processing.

[0190] In some embodiments, see Figure 3 、 Figures 5 to 8 In the case where a second thickened area is provided on the second connecting portion 232 , a second nut can be provided on the second thickened area to further increase the structural strength of the portion of the second connecting portion 232 connected to the second bolt 2521 .

[0191] In some embodiments, the structural shape of the first reinforcement portion 2311 and the structural shape of the second reinforcement portion can be the same or similar, or different, and can be selected according to specific needs.

[0192] In some embodiments, see Figures 3 to 5 、 Figures 9 to 11 The edge of the torsion box 23 protrudes outward to form a first edge plate 233.

[0193] The first edge plate 233 is located at the edge of the torsion box 23 and is a plate-shaped structure extending from the edge of the torsion box 23 to the outside of the cavity 2030 .

[0194] When the torque box 23 is assembled using panels, such as side panels 263, a bottom panel 262, and a top panel 261, the edge of the bottom panel 262 and the edge of the top panel 261 can be stacked to form the first edge panel 233, which facilitates the arrangement of the first edge panel 233. The first edge panel 233 also facilitates the connection between the bottom panel 262 and the top panel 261, thereby facilitating the assembly of the torque box 23. Of course, the first edge panel 233 can also be a partial structural member of the torque box 23, such as an extension of the edge of the bottom panel 262 or the top panel 261.

[0195] The first edge plate 233 is provided on the torque box 23 to improve the structural strength of the torque box 23 .

[0196] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 The first edge plate 233 includes a first edge portion 2331 located at a position corresponding to the top side surface 211. The first edge portion 2331 is formed by extending the first connecting portion 231 backward. The first edge portion 2331 is provided with a first through hole 23311. A second through hole 2111 is opened at a position corresponding to the first through hole 23311 on the longitudinal beam 21.

[0197] The first edge portion 2331 refers to a portion of the first edge plate 233 located on the top side 211 of the longitudinal beam 21 .

[0198] The first edge portion 2331 is formed by extending rearward from the first connecting portion 231, which means that the first edge portion 2331 extends from the rear side of the first connecting portion 231. In other words, the first edge portion 2331 is connected to the first connecting portion 231, thereby increasing the structural strength of the first connecting portion 231. As an example, the first edge portion 2331 can be integrally formed with the first connecting portion 231, such as when the torsion box 23 is assembled using panels, the first edge portion 2331 is formed on the rear side of the first connecting portion 231. Of course, the first edge portion 2331 can also be manufactured separately and then connected to the first connecting portion 231.

[0199] The first through hole 23311 refers to a through hole structure provided on the first edge portion 2331. The second through hole 2111 refers to a through hole structure provided on the longitudinal beam 21 at a position corresponding to the first through hole 23311.

[0200] The first edge portion 2331 is provided to increase the contact area between the torsion box 23 and the top side surface 211 of the longitudinal beam 21, so as to facilitate the positioning and connection of the torsion box 23 and the top side surface 211 in the height direction Z. In addition, the first edge portion 2331 is formed by the rearward extension of the first connecting portion 231, and the structural strength of the first connecting portion 231 can be reinforced by the first edge portion 2331. A first through hole 23311 is provided on the first edge portion 2331, and a second through hole 2111 is correspondingly provided on the longitudinal beam 21, so that a fastener can be used to pass through the second through hole 2111 and the first through hole 23311 to connect to the vehicle body 120.

[0201] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 The first edge plate 233 includes a second edge portion 2332 adapted to be detachably connected to the side surface 213 of one side of the longitudinal beam 21 .

[0202] The second edge portion 2332 refers to the portion of the first edge plate 233 corresponding to the side surface 213 on one side of the longitudinal beam 21. The second edge portion 2332 is compatible with the side surface 213 on one side of the longitudinal beam 21, making it easier to detachably connect the second edge portion 2332 to the longitudinal beam 21. For example, a snap-fit ​​connection can be employed, whereby corresponding snap-fit ​​structures are provided on the second edge portion 2332 and the corresponding side surface 213 of the longitudinal beam 21, respectively, to achieve snap-fit ​​connection between the second edge portion 2332 and the corresponding side surface 213 of the longitudinal beam 21, thereby detachably connecting the second edge portion 2332 to the corresponding side surface 213 of the longitudinal beam 21. For example, a pin can be provided on the plate forming the second edge portion 2332, and after the pin is inserted into the longitudinal beam 21, a locking member such as a snap ring can be used to lock the pin, thereby detachably connecting the second edge portion 2332 to the corresponding side surface 213 of the longitudinal beam 21. Of course, as an example, the second edge portion 2332 can also be detachably connected to the corresponding side surface 213 of the longitudinal beam 21 using fasteners such as bolts. Therefore, since the second edge portion 2332 is adapted to the corresponding side surface 213 of the longitudinal beam 21, the second edge portion 2332 can be detachably connected to the corresponding side surface 213 of the longitudinal beam 21 in a variety of ways, which can greatly reduce the difficulty of detachably connecting the torque box 23 and the chemical chamber 201, and facilitate detachable connection.

[0203] The second edge portion 2332 is provided to increase the contact area between the torsion box 23 and the corresponding side surface 213 of the longitudinal beam 21, so as to facilitate the positioning connection between the torsion box 23 and the corresponding side surface 213 of the longitudinal beam 21 in the left-right direction Y, and also facilitate the detachable connection between the second edge portion 2332 and the corresponding side surface 213 of the longitudinal beam 21.

[0204] In some embodiments, the first edge plate 233 may also include two second edge portions 2332 adapted to be detachably connected to the side surfaces 213 on opposite sides of the longitudinal beam 21 , respectively, to enhance the structural strength of the connection.

[0205] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 The end of the longitudinal beam 21 near the top side 211 has a widening portion 2102 extending in a direction toward one side of the longitudinal beam 21. Specifically, the widening portion 2102 extends in a left-right direction toward one side of the longitudinal beam 21 near the top side 211. The provision of the widening portion 2102 increases the width of the top side 211 of the longitudinal beam 21 to facilitate connection to the vehicle body 120. The provision of the widening portion 2102 creates a stepped shape on the corresponding side surface 213 of the longitudinal beam 21 without widening the entire longitudinal beam 21. This reduces the space occupied by the chemical chamber 201, increases the structural strength of the chemical chamber 201, and reduces the weight of the chemical chamber 201 by reducing the amount of material required. As an example, when the longitudinal beam 21 includes two side beams 210, an end of the side beam 210 close to the top side surface 211 protrudes and extends toward the side of the outer side surface 2132 of the side beam 210 to have a widening portion 2102, and accordingly, the outer side surface 2132 of the side beam 210 forms a stepped shape.

[0206] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 The vehicle frame 200 includes a third fastener 253 , which passes through the second edge portion 2332 along the left-right direction Y and is detachably connected to the longitudinal beam 21 .

[0207] The third fastener 253 is a detachable fastener used to connect the longitudinal beam 21 and the second edge portion 2332. The third fastener 253 can be a bolt or other structure, such as a shaft with an elastic member connected to one end and a slot at the other end. When used, the shaft can be installed on the longitudinal beam 21, and one end of the elastic member is fixed to the longitudinal beam 21. The elastic member can push the shaft to rotate and reset. The corresponding second edge portion 2332 is provided with a locking hole. When the shaft is inserted into the locking hole, the action of the locking hole and the side wall of the shaft rotates the shaft, and the elastic member accumulates force. When the slot reaches the slot and the side wall of the slot enters the slot, the elastic member releases the stored force, pushing the shaft to reverse, causing the slot to engage with the side wall of the slot, thereby achieving the locking connection between the second edge portion 2332 and the longitudinal beam 21. When disassembling, the shaft can be disengaged from the locking hole by rotating the shaft or the elastic member. Of course, the shaft member may not be provided with an elastic member, and the shaft member can be connected and disconnected from the second edge portion 2332 by rotating the shaft member manually or using a tool. The third fastener 253 can be made of a material with a certain structural strength, such as aluminum alloy or steel, which can meet the required strength requirements for the connection between the second edge portion 2332 and the longitudinal beam 21.

[0208] The third fastener 253 may be one or more, such as two, three, four, or five. When there are multiple third fasteners 253, the third fasteners 253 cooperate to connect the third connecting portion to the longitudinal beam 21, which can reduce the structural strength requirements of each third fastener 253 and thus reduce costs.

[0209] A third fastener 253 is provided, and the third fastener 253 passes through the second edge portion 2332 along the left-right direction Y and is detachably connected to the longitudinal beam 21. A widening portion 2102 that widens in the direction away from the second edge portion 2332 can be provided on the top of the longitudinal beam 21 to increase the width of the top side surface 211 of the longitudinal beam 21 to facilitate connection with the upper body 120. There is no need to destroy the widening portion 2102, and the widening portion 2102 has good structural strength, which is convenient for connection with the upper body 120 and also facilitates the detachable connection between the longitudinal beam 21 and the second edge portion 2332.

[0210] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 In the case where the torque box 23 includes the second connecting portion 232 , the second edge portion 2332 is formed by extending rearward from the second connecting portion 232 .

[0211] The second edge portion 2332 is formed by extending rearward from the second connecting portion 232, which means that the second edge portion 2332 extends from the rear side of the second connecting portion 232. In other words, the second edge portion 2332 is connected to the second connecting portion 232, thereby increasing the structural strength of the second connecting portion 232. As an example, the second edge portion 2332 can be integrally formed with the second connecting portion 232, such as when the torsion box 23 is assembled using panels, the second edge portion 2332 is formed on the rear side of the second connecting portion 232. Of course, the second edge portion 2332 can also be manufactured separately and then connected to the second connecting portion 232.

[0212] The second edge portion 2332 is formed by the second connecting portion 232 extending backward and is connected to the first edge portion 2331 , thereby improving the overall structural strength of the torque box 23 .

[0213] When the torsion box 23 is manufactured by splicing plates, a first edge portion 2331 is formed on the rear side of the first connection portion 231, and a second edge portion 2332 is formed on the rear side of the second connection portion 232. The first edge portion 2331 and the second edge portion 2332 are an integral structure.

[0214] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 The first edge plate 233 further includes a third edge portion 2333, which is formed by a protruding extension of the edge of the second connecting portion 232 on a side close to the other torque box 23, and is connected to the second edge portion 2332. The provision of the third edge portion 2333 can further enhance the structural strength of the torque box 23.

[0215] In some embodiments, when the first edge plate 233 is formed by stacking the edge portion of the bottom plate 262 and the edge portion of the top plate 261, or the first edge plate 233 can also be formed by extending the edge portion of the bottom plate 262 or the top plate 261, the first edge portion 2331, the second edge portion 2332 and the third edge portion 2333 of the first edge plate 233 are an integrated structure.

[0216] In some embodiments, see Figure 1 、 Figures 3 to 5 、 Figures 9 to 11 The third fastener 253 includes a third bolt 2531 , and the third bolt 2531 is threadedly connected to the longitudinal beam 21 .

[0217] The third bolt 2531 is a detachable bolt used to connect the longitudinal beam 21 to the second edge portion 2332. When there are multiple third fasteners 253, each of the third fasteners 253 can be a third bolt 2531, or some of the third fasteners 253 can use the third bolt 2531.

[0218] The third fastener 253 uses a third bolt 2531 , which has a simple structure, a stable and convenient connection, and a low cost.

[0219] In some embodiments, see Figures 3 to 5 、 Figures 9 to 11 The longitudinal beam 21 is provided with a first inner cavity 2101 extending along its length direction, and a third reinforcement portion 215 is correspondingly provided on the longitudinal beam 21 . The third reinforcement portion 215 is provided with a third threaded hole 2150 adapted to connect the third bolt 2531 .

[0220] The first inner cavity 2101 refers to an empty cavity structure formed in the longitudinal beam 21 and extending along the length direction of the longitudinal beam 21 .

[0221] The third reinforcement 215 is a reinforcing structure provided on the longitudinal beam 21 at a position corresponding to the third bolt 2531. For example, the third reinforcement 215 can be a plate or block added to the longitudinal beam 21, or it can be a reinforcement of the longitudinal beam 21 itself, such as by increasing the thickness, providing ribs, or using higher-strength materials in the corresponding area.

[0222] The third threaded hole 2150 refers to a hole structure with threads at least partially provided on the inner wall.

[0223] Since the third bolt 2531 is used to detachably connect the second edge portion 2332 and the longitudinal beam 21, a third threaded hole 2150 needs to be provided on the longitudinal beam 21, which will inevitably lead to a reduction in structural strength. The provision of the third reinforcement portion 215 can increase the structural strength of the portion corresponding to the third threaded hole 2150, so as to at least partially offset the reduction in structural strength of the longitudinal beam 21 caused by the provision of the third threaded hole 2150, so as to ensure a stable connection with the third bolt 2531.

[0224] Providing a first inner cavity 2101 in the longitudinal beam 21 can reduce the weight of the longitudinal beam 21, thereby reducing the weight of the frame 200 and reducing costs; providing a third reinforcement portion 215 on the longitudinal beam 21, and providing a third threaded hole 2150 on the third reinforcement portion 215 to connect with the third bolt 2531, and the third bolt 2531 can be firmly connected to the longitudinal beam 21.

[0225] In some embodiments, see Figures 3 to 5 、 Figures 9 to 11 The third reinforcement portion 215 includes a third nut, which is located in the first inner cavity 2101. A third through hole is provided on the longitudinal beam 21 at the third nut. The inner hole of the third nut forms a third threaded hole, and the third bolt 2531 is threadedly connected to the third nut.

[0226] The third nut is a nut provided on the longitudinal beam 21 and used to connect the third bolt 2531. Positioning the third nut within the first inner cavity 2101 reduces space usage, fully utilizes the space within the first inner cavity 2101 of the longitudinal beam 21, and facilitates the fit of the second edge portion 2332 to the corresponding side surface 213 of the longitudinal beam 21. For example, when forming the longitudinal beam 21 by assembling panels, the third nut can be installed on the panel forming the corresponding side surface 213 of the longitudinal beam 21, which is then connected to other panels to form the longitudinal beam 21, thereby positioning the third nut within the longitudinal beam 21. Of course, an external tool can also be used to insert the third nut into the first inner cavity 2101 of the longitudinal beam 21 at the position corresponding to the third bolt 2531.

[0227] A third nut is provided in the first inner cavity 2101 , and a third through hole is correspondingly provided on the longitudinal beam 21 to connect the third bolt 2531 , which has a simple structure and low cost.

[0228] In some embodiments, see Figures 3 to 5 、 Figures 9 to 11 The third reinforcement portion 215 includes a first reinforcement plate 2151 , which is located in the first inner cavity 2101 . A third threaded hole 2150 is provided on the first reinforcement plate 2151 , and a third through hole 2130 is provided on the longitudinal beam 21 corresponding to the third threaded hole 2150 .

[0229] The first reinforcing plate 2151 is a plate member disposed in the first inner cavity 2101 of the longitudinal beam 21. For example, the first reinforcing plate 2151 can be pushed into a position corresponding to the connection of the third bolt 2531 from the end of the longitudinal beam 21.

[0230] The first reinforcing plate 2151 is correspondingly provided on the longitudinal beam 21 , which not only increases the structural strength of the longitudinal beam 21 , but also facilitates the production of the third threaded hole 2150 on the longitudinal beam 21 , thereby facilitating processing.

[0231] In some embodiments, see Figures 3 to 5 、 Figures 9 to 11 When the first reinforcing plate 2151 is provided in the longitudinal beam 21 , a third nut can be provided on the first reinforcing plate 2151 to further increase the structural strength of the portion of the longitudinal beam 21 to which the third bolt 2531 is connected.

[0232] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The front cabin 203 further includes a connecting beam 24 , which is connected to the torsion box 23 , and the cavity 2030 extends into the connecting beam 24 .

[0233] Connecting beam 24 refers to the connecting structure connecting to torsion box 23. Cavity 2030 extending into connecting beam 24 means that cavity 2030 in torsion box 23 extends into connecting beam 24, thereby also forming cavity 2030 in connecting beam 24, even if connecting beam 24 forms a box-shaped structure. Connecting beam 24 is a box-shaped structure made of high-strength materials such as aluminum alloy, high-strength steel, or carbon fiber. It generally comprises side panels 263, a bottom panel 262, and a top panel 261. These panels are assembled together through welding, riveting, or bolting to form a sturdy, closed or semi-closed structure, thereby forming cavity 2030 in connecting beam 24. In other words, cavity 2030 is a chamber space formed in connecting beam 24 to reduce the weight of connecting beam 24. Of course, the connecting beam 24 can also use a structure formed by the cooperation of a casting and a plate, such as covering the side where the ribs of the casting are located with the plate, and connecting at least part of the ribs to enhance the structural strength of the connecting beam 24, thereby forming a cavity 2030 structure between the ribs.

[0234] The front cabin 203 is provided with a connecting beam 24 to enhance the structural strength of the front cabin 203 , and the cavity 2030 extends into the connecting beam 24 , which can reduce the weight of the front cabin 203 , reduce the use of materials, and lower costs.

[0235] As an example, when there is one torsion box 23 , the connecting beam 24 is connected to the torsion box 23 . As an example, when there are two or more torsion boxes 23 , the connecting beam 24 connects the torsion boxes 23 .

[0236] In some embodiments, the connecting beam 24 may also be manufactured separately, such as by using a casting, a forging, or a profile, and then connected to the torsion box 23 .

[0237] In some embodiments, the connecting beam 24 may extend along the left-right direction Y. Of course, the connecting beam 24 may also have a certain angle with the left-right direction Y, such as an angle within 10 degrees.

[0238] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The connecting beam 24 extends rearwardly with a second edge plate 241 , and the cross beam 22 includes a front cross beam 221 connected to the front end of the longitudinal beam 21 . The second edge plate 241 is detachably connected to the upper surface of the front cross beam 221 .

[0239] The second edge plate 241 is a plate-like structure located at the rear edge of the connecting beam 24 and extending from the edge of the connecting beam 24 to the outside of the cavity 2030 .

[0240] When the connecting beam 24 is made of plate parts, such as the side panels 263, the bottom panel 262, and the top panel 261, the edge portion of the bottom panel 262 and the edge portion of the top panel 261 can be stacked to form the second edge panel 241, so as to facilitate the arrangement of the second edge panel 241. The second edge panel 241 also facilitates the connection between the bottom panel 262 and the top panel 261, so as to facilitate the assembly of the connecting beam 24. Of course, the second edge panel 241 can also be a partial structural member forming the connecting beam 24, such as an extension of the edge portion of the bottom panel 262 or the top panel 261.

[0241] The front crossbeam 221 refers to the crossbeam 22 located at the frontmost side among the crossbeams 22 of the chemical cabin 201 .

[0242] The second edge plate 241 is detachably connected to the upper surface of the front crossbeam 221. As an example, a snap-fit ​​connection can be adopted, that is, matching snap-fit ​​structures are respectively provided on the upper surfaces of the second edge plate 241 and the front crossbeam 221 to achieve snap-fit ​​connection between the second edge plate 241 and the front crossbeam 221, so as to detachably connect the second edge plate 241 to the front crossbeam 221. As an example, a pin can be provided on the plate making the second edge plate 241, and after the pin is inserted into the front crossbeam 221, a locking member such as a snap ring is used to lock the pin to achieve detachable connection between the second edge plate 241 and the front crossbeam 221. Of course, as an example, the second edge plate 241 can also be detachably connected to the front crossbeam 221 using fasteners such as bolts. Therefore, since the second edge plate 241 is adapted to the upper surface of the front cross beam 221, the second edge plate 241 and the front cross beam 221 can be detachably connected in a variety of ways, which can greatly reduce the difficulty of detachable connection between the torque box 23 and the chemical chamber 201 and facilitate detachable connection.

[0243] A second edge plate 241 is provided on the rear side of the connecting beam 24, which can increase the structural strength of the connecting beam 24 and thereby improve the structural strength of the front cabin 203; and the second edge plate 241 is detachably connected to the upper surface of the front cross beam 221 of the chemical cabin 201, which facilitates the connection and can improve the connection strength between the front cabin 203 and the chemical cabin 201, thereby improving the structural strength of the frame 200.

[0244] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The vehicle frame 200 includes a fourth fastener 254 , which is detachably connected to the front cross beam 221 and the second edge plate 241 along the height direction Z.

[0245] The fourth fastener 254 is a removable fastener used to connect the front crossbeam 221 and the second edge plate 241. The fourth fastener 254 can be a bolt or other structure, such as a shaft with an elastic member connected to one end and a slot at the other end. In use, the shaft can be installed on the front crossbeam 221, and one end of the elastic member is fixed to the front crossbeam 221. The elastic member can push the shaft to rotate and reset. The corresponding second edge plate 241 is provided with a locking hole. During the insertion of the shaft into the locking hole, the locking hole and the side wall of the shaft rotate the shaft, and the elastic member accumulates force. When the slot reaches the locking hole and the side wall of the slot enters the slot, the elastic member releases the accumulated force, pushing the shaft to reverse, causing the slot to engage with the side wall of the slot, thereby achieving the locking connection between the second edge plate 241 and the front crossbeam 221. During disassembly, the shaft can be disengaged from the locking hole by rotating the shaft or the elastic member. Of course, the shaft member may not be provided with an elastic member, and the shaft member can be connected and disconnected from the second edge plate 241 by rotating the shaft member manually or using a tool. The fourth fastener 254 can be made of a material with a certain structural strength, such as aluminum alloy or steel, which can meet the required strength for the connection between the second edge plate 241 and the front crossbeam 221.

[0246] The fourth fastener 254 may be one or more, such as two, three, four, or five. When there are multiple fourth fasteners 254, the fourth connecting portion and the front crossbeam 221 can be connected by the multiple fourth fasteners 254, which can reduce the structural strength requirements of each fourth fastener 254 and thus reduce costs.

[0247] The fourth fastener 254 is used to connect the front cross beam 221 and the second edge plate 241 along the height direction Z, which has a simple structure and convenient connection.

[0248] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The fourth fastener 254 passes through the second edge plate 241 from top to bottom and is connected to the front cross beam 221.

[0249] The fourth fastener 254 passes through the second edge plate 241 from top to bottom and is connected to the front crossbeam 221 , which means that the fourth fastener 254 passes through the second edge plate 241 from top to bottom along the height direction Z to be connected to the front crossbeam 221 .

[0250] The fourth fastener 254 is passed from bottom to bottom through the second edge plate 241 and connected to the front cross beam 221. The connection is convenient and there is no need to set a structure on the second edge plate 241 to adapt to the connection with the fourth fastener 254. This facilitates the processing and manufacturing of the second edge plate 241 and the processing and manufacturing of the front cabin 203.

[0251] In some embodiments, the fourth fastener 254 may also pass through the front cross beam 221 from bottom to top along the height direction Z and be detachably connected to the second edge plate 241 .

[0252] In some embodiments, the fourth fastener 254 includes a fourth bolt 2541 , which is threadedly connected to the front cross beam 221 .

[0253] The fourth bolt 2541 is a detachable bolt used to connect the front cross beam 221 and the second edge plate 241. When there are multiple fourth fasteners 254, each fourth fastener 254 can be a fourth bolt 2541, or some of the fourth fasteners 254 can use the fourth bolt 2541.

[0254] The fourth fastener 254 uses a fourth bolt 2541 , which has a simple structure, a stable and convenient connection, and a low cost.

[0255] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The front cross beam 221 is provided with a second inner cavity extending along its length direction, and the front cross beam 221 is correspondingly provided with a fourth reinforcement portion, and the fourth reinforcement portion is provided with a fourth threaded hole adapted to connect the fourth bolt 2541.

[0256] The second inner cavity refers to an empty cavity structure formed in the front cross beam 221 and extending along the length direction of the front cross beam 221 .

[0257] The fourth reinforcement portion refers to a reinforcing structure provided on the front cross beam 221 at a position corresponding to the fourth bolt 2541. For example, the fourth reinforcement portion may be a plate or block added to the front cross beam 221, or may be a reinforcement of the front cross beam 221 itself, such as by increasing the thickness, providing ribs, or using higher-strength materials in the corresponding area.

[0258] The fourth threaded hole refers to a hole structure in which threads are at least partially provided on the inner wall.

[0259] Since the fourth bolt 2541 is used to detachably connect the second edge plate 241 and the front cross beam 221, a fourth threaded hole needs to be provided on the front cross beam 221, which will inevitably lead to a reduction in structural strength. The provision of a fourth reinforcement portion can increase the structural strength of the portion corresponding to the fourth threaded hole, so as to at least partially offset the reduction in structural strength of the front cross beam 221 caused by the provision of the fourth threaded hole, so as to ensure a stable connection with the fourth bolt 2541.

[0260] Providing a second inner cavity in the front cross beam 221 can reduce the weight of the front cross beam 221, thereby reducing the weight of the frame 200 and reducing costs; providing a fourth reinforcement portion on the front cross beam 221, and providing a fourth threaded hole on the fourth reinforcement portion to connect with the fourth bolt 2541, and the fourth bolt 2541 can be firmly connected to the front cross beam 221.

[0261] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The fourth reinforcement portion includes a fourth nut, which is located in the second inner cavity. A fourth through hole 2211 is provided on the front cross beam 221 at the fourth nut. The inner hole of the fourth nut forms a fourth threaded hole, and the fourth bolt 2541 is threadedly connected to the fourth nut.

[0262] The fourth nut refers to the nut provided on the front crossbeam 221 and used to connect the fourth bolt 2541. The fourth nut is provided in the second inner cavity, which can reduce the occupied space and fully utilize the space in the second inner cavity of the front crossbeam 221. It also facilitates the adaptation of the second edge plate 241 to the upper surface of the front crossbeam 221. As an example, when the front crossbeam 221 is formed by splicing plates, the fourth nut can be installed on the plate forming the upper surface of the front crossbeam 221, and then connected with other plates to form the front crossbeam 221, thereby providing the fourth nut in the front crossbeam 221. Of course, an external tool can also be used to insert the fourth nut into the second inner cavity of the front crossbeam 221 to the position corresponding to the fourth bolt 2541.

[0263] A fourth nut is provided in the second inner cavity, and a fourth through hole 2211 is correspondingly provided on the front cross beam 221 to connect the fourth bolt 2541 , which has a simple structure and low cost.

[0264] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The fourth reinforcement portion includes a second reinforcement plate, the second reinforcement plate is located in the second inner cavity, a fourth threaded hole is provided on the second reinforcement plate, and a fourth through hole 2211 is provided on the front cross beam 221 corresponding to the fourth threaded hole.

[0265] The second reinforcing plate refers to a plate member disposed in the second inner cavity of the front cross beam 221. For example, the second reinforcing plate can be pushed into the position corresponding to the fourth bolt 2541 from the end of the front cross beam 221.

[0266] The second reinforcing plate is correspondingly provided on the front cross beam 221 , which not only increases the structural strength of the front cross beam 221 , but also facilitates the production of the fourth threaded hole on the front cross beam 221 , thereby facilitating processing.

[0267] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 , when the first reinforcing plate 2151 is provided in the front cross beam 221 , a fourth nut can be provided on the second reinforcing plate to further increase the structural strength of the portion of the front cross beam 221 connected to the fourth bolt 2541 .

[0268] In some embodiments, the structure of the first reinforcement portion 2311 and the structure of the second reinforcement portion can be the same or similar, or different.

[0269] In some embodiments, one side of the second edge plate 241 in the left-right direction Y can be connected to the front crossbeam 221 to facilitate connection. As an example, both sides of the second edge plate 241 in the left-right direction Y can also be connected to the front crossbeam 221 to improve the structural strength of the connection.

[0270] In some embodiments, Figure 3 、 Figure 5 、 Figures 10 to 12 The torsion box 23 and the connecting beam 24 are formed by splicing plates.

[0271] The torsion box 23 and the connecting beam 24 are formed by splicing together plates, which means that the torsion box 23 can be formed by splicing together multiple plates, and the connecting beam 24 can be formed by splicing together multiple plates, and then the connecting beam 24 is fixedly connected to the two torsion boxes 23. Of course, multiple plates can also be spliced ​​together to directly form an integral box-shaped structure, with the two ends of the box-shaped structure forming the two torsion boxes 23 and the middle portion forming the connecting beam 24. That is, the torsion box 23 and the connecting beam 24 form an integral structure. As an example, they can be made of high-strength materials such as aluminum alloy, high-strength steel, carbon fiber, etc., and are composed of side panels 263, bottom panel 262, top panel 261, etc., which are assembled together by welding, riveting, or bolting to form a strong closed or semi-closed structure. A structure formed by the combination of a casting and a plate can also be used, such as covering the side of the casting where the ribs are located with a plate, and connecting at least part of the ribs to form an integral structure, so that two torsion boxes 23 are formed at both ends of the structure, and a connecting beam 24 is formed in the middle to facilitate processing and manufacturing.

[0272] The torsion box 23 and the connecting beam 24 are spliced ​​by plate parts, which are simple to manufacture and low in cost. Moreover, various materials can be used, which is convenient for processing and manufacturing.

[0273] In some embodiments, when a first edge plate 233 is provided on the torsion box 23 and a second edge plate 241 is provided on the connecting beam 24, and when the torsion box 23 and the connecting beam 24 are manufactured as one piece, the first edge plate 233 and the second edge plate 241 may also form an integral structure, that is, when the torsion box 23 and the connecting beam 24 are manufactured as one piece, the first edge plate 233 and the second edge plate 241 are formed on their edges.

[0274] In some embodiments, see Figure 13 and Figure 14 The frame 200 includes a subframe 205 and a bracket 27 . The subframe 205 includes a longitudinal beam 2051 extending along the front-to-back direction X. The bracket 27 is provided with a cavity 270 for inserting the longitudinal beam 2051 . The bracket 27 is connected to the connecting beam 24 .

[0275] Subframe 205 refers to the portion of the beam structure on vehicle frame 200 that connects to the suspension system of vehicle 100. Longitudinal beam 2051 is a beam member provided on subframe 205 and extending in the front-to-back direction X. Longitudinal beam 2051 is provided to connect to front compartment 203, and is supported by front compartment 203, thereby supporting subframe 205. Longitudinal beam 2051 can be made of materials such as aluminum, steel, or fiber. It can be a beam member with a central cavity, such as a profile or a spliced ​​plate, or a solid beam member, such as a die-cast or forged part.

[0276] Bracket 27 is a supporting structure used to connect subframe 205 to front compartment 203. Bracket 27 can be a structural member formed by stamping a plate, or it can be a casting, forging, or other similar component. Bracket 27 can also be an injection-molded or compression-molded component. Bracket 27 can be made of materials such as aluminum, steel, and fiber.

[0277] The cavity 270 refers to a recessed cavity or an empty chamber or a groove structure formed on the bracket 27. The cavity 270 is provided on the bracket 27 for inserting the longitudinal beam 2051, thereby limiting the longitudinal beam 2051 and supporting the longitudinal beam 2051. The bracket 27 is mounted on the connecting beam 24 to connect the longitudinal beam 2051 to the connecting beam 24.

[0278] As an example, the bracket 27 can be detachably connected to the connecting beam 24 so as to remove and maintain the bracket 27. As an example, the bracket 27 can also be fixedly connected to the connecting beam 24, such as by welding or bonding.

[0279] A bracket 27 is provided, which is connected to the connecting beam 24 , and a cavity 270 is provided on the bracket 27 . The longitudinal beam 2051 of the sub-frame 205 is inserted into the cavity 270 , so that the sub-frame 205 can be connected to the connecting beam 24 , and the connection is convenient.

[0280] In some embodiments, see Figure 13 and Figure 14 The vehicle frame 200 includes a fifth fastener 255 , which passes through the bracket 27 and the corresponding longitudinal beam 2051 and is detachably connected to the connecting beam 24 .

[0281] The fifth fastener 255 is a removable fastener used to connect the bracket 27, the longitudinal beam 2051, and the connecting beam 24. The fifth fastener 255 can be a bolt or other structure, such as a shaft with a slot at one end. In use, one end of the shaft has a slot provided on the connecting beam 24. The shaft extends through the bracket 27 and the longitudinal beam 2051 and into the slot in the connecting beam 24. The sidewall of the slot enters the slot. The shaft is rotated to engage the slot with the sidewall of the slot, achieving a secure connection with the connecting beam 24. During disassembly, the shaft can be rotated to disengage the shaft from the slot. The fifth fastener 255 can be made of a material with a certain structural strength, such as aluminum alloy or steel, that meets the required connection strength.

[0282] The fifth fastener 255 may be one or more, such as two, three, four, or five. When there are multiple fifth fasteners 255, the plurality of fifth fasteners 255 cooperate to connect the longitudinal beam 2051, the bracket 27, and the connecting beam 24, thereby reducing the structural strength requirements of each fifth fastener 255 and reducing costs.

[0283] The fifth fastener 255 is used to pass through the bracket 27 and the corresponding longitudinal beam 2051 and is detachably connected to the connecting beam 24, thereby strengthening the connection strength between the subframe 205 and the connecting beam 24 and effectively fixing the subframe 205. The fifth fastener 255 is detachably connected to the connecting beam 24, which facilitates disassembly and maintenance.

[0284] In some embodiments, see Figure 13 and Figure 14 The fifth fastener 255 includes a fifth bolt 2551 , which is threadedly connected to the connecting beam 24 .

[0285] The fifth bolt 2551 is a detachable bolt used to connect the bracket 27, the longitudinal beam 2051, and the connecting beam 24. When there are multiple fifth fasteners 255, each of the fifth fasteners 255 can be a fifth bolt 2551, or some of the fifth fasteners 255 can use the fifth bolt 2551.

[0286] The fifth fastener 255 uses a fifth bolt 2551 , which has a simple structure, a stable and convenient connection, and a low cost.

[0287] In some embodiments, a fifth reinforcement portion is correspondingly provided on the connecting beam 24 , and the fifth reinforcement portion is provided with a fifth threaded hole adapted to connect with the fifth bolt 2551 .

[0288] The fifth reinforcement portion refers to a reinforcing structure provided on the connecting beam 24 at a position corresponding to the fifth bolt 2551. For example, the fifth reinforcement portion may be a plate or block added to the connecting beam 24, or may be a reinforcement of the connecting beam 24 itself, such as by increasing the thickness, providing ribs, or using a higher-strength material in the corresponding area.

[0289] The fifth threaded hole refers to a hole structure in which threads are at least partially provided on the inner wall.

[0290] Since the fifth bolt 2551 is used to detachably connect the bracket 27, the connecting beam 24 and the longitudinal beam 2051, a fifth threaded hole needs to be provided on the connecting beam 24, which will inevitably lead to a reduction in structural strength. The provision of the fifth reinforcement portion can increase the structural strength of the portion corresponding to the fifth threaded hole, so as to at least partially offset the reduction in structural strength of the connecting beam 24 caused by the provision of the fifth threaded hole, so as to ensure a stable connection with the fifth bolt 2551.

[0291] A fifth reinforcing portion is provided on the connecting beam 24 , and a fifth threaded hole is provided on the fifth reinforcing portion so as to be connected with the fifth bolt 2551 , and the fifth bolt 2551 can be firmly connected to the connecting beam 24 .

[0292] In some embodiments, see Figure 13 and Figure 14 The fifth reinforcement portion includes a fifth nut installed on the connecting beam 24, the fifth nut is located in the cavity 2030, a fifth through hole is provided on the connecting beam 24 at the fifth nut, the inner hole of the fifth nut forms a fifth threaded hole, and the fifth bolt 2551 is threadedly connected to the fifth nut.

[0293] The fifth nut is provided on the connecting beam 24 and is used to connect the fifth bolt 2551. The fifth nut is provided in the cavity 2030, which reduces space usage and fully utilizes the space within the cavity 2030. Specifically, before the connecting beam 24 is fabricated, the fifth nut can be installed on the structural member corresponding to the connecting beam 24, which is then connected to other panels to form the box-shaped connecting beam 24 structure.

[0294] A fifth nut is provided in the cavity 2030 , and a corresponding fifth through hole is provided on the connecting beam 24 to connect the fifth bolt 2551 . The structure is simple and the cost is low. During the process of manufacturing the connecting beam 24 , the fifth nut can be fixed to the connecting beam 24 , which facilitates manufacturing.

[0295] In some embodiments, see Figure 13 and Figure 14The fifth reinforcement portion includes a third thickened area set on the connecting beam 24 corresponding to the fifth bolt 2551, the thickness of the third thickened area is greater than the thickness of other areas of the connecting beam 24, and the third thickened area is provided with a fifth threaded hole.

[0296] The third thickened area refers to the area on the connecting beam 24 connected to the fifth bolt 2551 and is thicker than other areas on the connecting beam 24. By increasing the thickness, the structural strength of the third thickened area is improved, forming a fifth reinforcement portion.

[0297] The third thickened area may be an area on the connecting beam 24 corresponding to the connection of the fifth bolt 2551 , which protrudes toward the inside of the cavity 2030 to increase the thickness, fully utilize the space in the cavity 2030 , and reduce occupied space.

[0298] The third thickened area is provided corresponding to the connecting beam 24 , which not only increases the structural strength of the connecting beam 24 , but also allows the fifth threaded hole to be directly made on the connecting beam 24 , thereby reducing the number of parts and facilitating processing.

[0299] In some embodiments, see Figure 13 and Figure 14 In the case where a third thickened area is provided on the connecting beam 24 , a fifth nut can be provided on the third thickened area to further increase the structural strength of the portion of the connecting beam 24 connected to the fifth bolt 2551 .

[0300] In some embodiments, the structural shape of the first reinforcement portion 2311 and the structural shape of the fifth reinforcement portion can be the same or similar, or different, and can be selected according to specific needs.

[0301] In some embodiments, see Figure 13 and Figure 14 The bracket 27 is provided with first adapting portions 271 on opposite sides of the cavity 270 , respectively. The first adapting portions 271 are detachably connected to the connecting beam 24 .

[0302] The first adapter portion 271 refers to a partial structure provided on the bracket 27 that is adapted to the connecting beam 24. The first adapter portion 271 is provided on the bracket 27 to facilitate detachable connection with the connecting beam 24. As an example, since the first adapter portion 271 is adapted to the connecting beam 24, a snap-fitting method can be used, that is, corresponding snap-fitting structures are provided on the first adapter portion 271 and the connecting beam 24, respectively, to achieve snap-fitting between the first adapter portion 271 and the connecting beam 24, so as to detachably connect the first adapter portion 271 to the connecting beam 24. As an example, the first adapter portion 271 can also be detachably connected to the connecting beam 24 using fasteners such as bolts. Therefore, since the first adapter portion 271 is adapted to the connecting beam 24, the detachable connection between the first adapter portion 271 and the connecting beam 24 can be achieved in a variety of ways.

[0303] The first adapter portion 271 is provided to connect with the connecting beam 24 , which facilitates the connection. The first adapter portion 271 is detachably connected to the connecting beam 24 , which allows for easy disassembly for maintenance.

[0304] In some embodiments, the vehicle frame 200 includes a sixth fastener 256 , which passes through the first adapter portion 271 and is detachably connected to the connecting beam 24 .

[0305] The sixth fastener 256 is a removable fastener used to connect the first adapter portion 271 to the connecting beam 24. The sixth fastener 256 can be a bolt; it can also be another structure, such as a shaft with a slot at one end. In use, a slot is provided on the connecting beam 24 at one end of the shaft. One end of the shaft passes through the first adapter portion 271 and extends into the slot of the connecting beam 24. The side wall of the slot enters the slot. The shaft is rotated to engage the slot with the side wall of the slot, thereby achieving a fixed connection with the connecting beam 24. During disassembly, the shaft can be rotated to disengage the shaft from the slot. The sixth fastener 256 can be made of a material with a certain structural strength, such as aluminum alloy or steel, that can meet the required connection strength.

[0306] The sixth fastener 256 provided on each first adapting portion 271 may be one or more, such as two, three, four, or five. When there are multiple sixth fasteners 256 , the multiple sixth fasteners 256 cooperate to connect the first adapting portion 271 and the connecting beam 24 , which can reduce the structural strength requirements of each sixth fastener 256 and thus reduce costs.

[0307] A sixth fastener 256 is provided to pass through the first adapter portion 271 and be detachably connected to the connecting beam 24 , which is convenient for connection and disassembly for maintenance.

[0308] In some embodiments, see Figure 13 and Figure 14 The sixth fastener 256 includes a sixth bolt 2561 , which is threadedly connected to the connecting beam 24 .

[0309] The sixth bolt 2561 is a detachable bolt used to connect the first adapter portion 271 and the connecting beam 24. When there are multiple sixth fasteners 256, each of the sixth fasteners 256 can be a sixth bolt 2561, or some of the sixth fasteners 256 can use the sixth bolt 2561.

[0310] The sixth fastener 256 uses a sixth bolt 2561 , which has a simple structure, a stable and convenient connection, and a low cost.

[0311] In some embodiments, a sixth reinforcement portion is correspondingly provided on the connecting beam 24 , and the sixth reinforcement portion is provided with a sixth threaded hole adapted to connect with a sixth bolt 2561 .

[0312] The sixth reinforcement portion refers to a reinforcing structure provided on the connecting beam 24 at a position corresponding to the sixth bolt 2561. For example, the sixth reinforcement portion may be a plate or block added to the connecting beam 24, or may be a reinforcement of the connecting beam 24 itself, such as by increasing the thickness, providing ribs, or using a higher-strength material in the corresponding area.

[0313] The sixth threaded hole refers to a hole structure in which threads are at least partially provided on the inner wall.

[0314] Since the sixth bolt 2561 is used to detachably connect the connecting beam 24 and the first adapter part 271, a sixth threaded hole needs to be provided on the connecting beam 24, which will inevitably lead to a reduction in structural strength. The provision of the sixth reinforcement part can increase the structural strength of the portion corresponding to the sixth threaded hole, so as to at least partially offset the reduction in structural strength of the connecting beam 24 caused by the provision of the sixth threaded hole, so as to ensure a stable connection with the sixth bolt 2561.

[0315] A sixth reinforcing portion is provided on the connecting beam 24 , and a sixth threaded hole is provided on the sixth reinforcing portion so as to be connected with the sixth bolt 2561 , and the sixth bolt 2561 can be firmly connected to the connecting beam 24 .

[0316] In some embodiments, see Figure 13 and Figure 14 The sixth reinforcement portion includes a sixth nut installed on the connecting beam 24, the sixth nut is located in the cavity 2030, a sixth through hole is provided on the connecting beam 24 at the sixth nut, the inner hole of the sixth nut forms a sixth threaded hole, and the sixth bolt 2561 is threadedly connected to the sixth nut.

[0317] The sixth nut is provided on the connecting beam 24 and is used to connect the sixth bolt 2561. The sixth nut is provided in the cavity 2030, which reduces space usage and fully utilizes the space within the cavity 2030. Specifically, before the connecting beam 24 is fabricated, the sixth nut can be installed on the structural member corresponding to the connecting beam 24, which is then connected to other panels to form the box-shaped connecting beam 24 structure.

[0318] A sixth nut is provided in the cavity 2030 , and a corresponding sixth through hole is provided on the connecting beam 24 to connect the sixth bolt 2561 . The structure is simple and the cost is low. During the process of manufacturing the connecting beam 24 , the sixth nut can be fixed to the connecting beam 24 , which facilitates manufacturing.

[0319] In some embodiments, see Figure 13 and Figure 14The sixth reinforcement portion includes a fourth thickened area set on the connecting beam 24 corresponding to the sixth bolt 2561, the thickness of the fourth thickened area is greater than the thickness of other areas of the connecting beam 24, and the fourth thickened area is provided with a sixth threaded hole.

[0320] The fourth thickened area refers to the area on the connecting beam 24 connected to the sixth bolt 2561 and is thicker than other areas on the connecting beam 24. By increasing the thickness, the structural strength of the fourth thickened area is improved, thereby forming a sixth reinforcement portion.

[0321] The fourth thickened area may be an area on the connecting beam 24 corresponding to the sixth bolt 2561 , which protrudes toward the interior of the cavity 2030 to increase the thickness, fully utilize the space in the cavity 2030 , and reduce occupied space.

[0322] The fourth thickened area is provided corresponding to the connecting beam 24 , which not only increases the structural strength of the connecting beam 24 , but also allows a sixth threaded hole to be directly made on the connecting beam 24 , thereby reducing the number of parts and facilitating processing.

[0323] In some embodiments, see Figure 13 and Figure 14 In the case where a fourth thickened area is provided on the connecting beam 24 , a sixth nut can be provided on the fourth thickened area to further increase the structural strength of the portion of the connecting beam 24 connected to the sixth bolt 2561 .

[0324] In some embodiments, the structural shape of the fifth reinforcement portion and the structural shape of the sixth reinforcement portion can be the same or similar, or different, and can be selected according to specific needs.

[0325] In some embodiments, see Figure 13 and Figure 14 The bracket 27 is provided with second adapting portions 272 on opposite sides of the cavity 270 , respectively. The second adapting portions 272 are detachably connected to the front surface of the front crossbeam 221 .

[0326] The second adapter portion 272 refers to a portion of the structure provided on the bracket 27 that is adapted to the front crossbeam 221. The second adapter portion 272 is provided on the bracket 27 to facilitate detachable connection to the front crossbeam 221. As an example, since the second adapter portion 272 is adapted to the front crossbeam 221, a snap-fitting method can be employed, i.e., corresponding snap-fitting structures are provided on the second adapter portion 272 and the front crossbeam 221, respectively, to achieve snap-fitting of the second adapter portion 272 to the front crossbeam 221, thereby detachably connecting the second adapter portion 272 to the front crossbeam 221. As an example, the second adapter portion 272 can also be detachably connected to the front crossbeam 221 using fasteners such as bolts. Thus, since the second adapter portion 272 is adapted to the front crossbeam 221, the second adapter portion 272 and the front crossbeam 221 can be detachably connected in a variety of ways.

[0327] A second adapter portion 272 is provided to connect with the front cross beam 221 to connect the bracket 27 with the front cross beam 221 so as to more stably fix the bracket 27, thereby better connecting the bracket 27 with the longitudinal beam 2051 of the subframe 205; and the bracket 27 is connected to the connecting beam 24, and the connection strength between the connecting beam 24 and the front cross beam 221 can be improved through the bracket 27; the second adapter portion 272 is detachably connected to the front cross beam 221, which can facilitate maintenance.

[0328] In some embodiments, see Figure 13 and Figure 14 The vehicle frame 200 includes a seventh fastener 257 , which passes through the second adapter portion 272 and is detachably connected to the front crossbeam 221 .

[0329] The seventh fastener 257 is a removable fastener used to connect the second adapter portion 272 to the front crossbeam 221. The seventh fastener 257 can be a bolt; it can also be other structures, such as a shaft with a slot at one end. In use, a hole is provided on the front crossbeam 221 at one end of the shaft. One end of the shaft passes through the second adapter portion 272 and extends into the hole of the front crossbeam 221. The side wall of the hole enters the slot. The shaft is rotated to engage the slot with the side wall of the hole, thereby achieving a fixed connection with the front crossbeam 221. During disassembly, the shaft can be rotated to disengage the shaft from the hole. The material of the seventh fastener 257 can be aluminum alloy, steel, or other materials with a certain structural strength that can meet the required connection strength.

[0330] The seventh fastener 257 provided on each second adapter portion 272 may be one or more, such as two, three, four, or five. When there are multiple seventh fasteners 257 , the plurality of seventh fasteners 257 cooperate to connect the second adapter portion 272 and the front crossbeam 221 , thereby reducing the structural strength requirements of each seventh fastener 257 and thus reducing costs.

[0331] A seventh fastener 257 is provided to pass through the second adapter portion 272 and be detachably connected to the front cross beam 221 , which is convenient for connection and disassembly for maintenance.

[0332] In some embodiments, see Figure 13 and Figure 14 The seventh fastener 257 includes a seventh bolt 2571 , which is threadedly connected to the front cross beam 221 .

[0333] The seventh bolt 2571 is a detachable bolt used to connect the second adapter portion 272 to the front crossbeam 221. When there are multiple seventh fasteners 257, each seventh fastener 257 can be a seventh bolt 2571, or some of the seventh fasteners 257 can use the seventh bolt 2571.

[0334] The seventh fastener 257 uses a seventh bolt 2571 , which has a simple structure, a stable and convenient connection, and a low cost.

[0335] In some embodiments, a seventh reinforcement portion is correspondingly provided on the front cross beam 221 , and the seventh reinforcement portion is provided with a seventh threaded hole adapted to connect with a seventh bolt 2571 .

[0336] The seventh reinforcement portion refers to a reinforcing structure provided on the front cross beam 221 at a position corresponding to the seventh bolt 2571. For example, the seventh reinforcement portion may be a plate or block added to the front cross beam 221, or may be a reinforcement of the front cross beam 221 itself, such as by increasing the thickness, providing ribs, or using higher-strength materials in the corresponding area.

[0337] The seventh threaded hole refers to a hole structure in which threads are provided at least partially on the inner wall.

[0338] Since the seventh bolt 2571 is used to detachably connect the front cross beam 221 and the second adapter part 272, it is necessary to set a seventh threaded hole on the front cross beam 221, which will inevitably lead to a decrease in structural strength. The provision of the seventh reinforcement part can increase the structural strength of the portion corresponding to the seventh threaded hole, so as to at least partially offset the decrease in structural strength of the front cross beam 221 caused by the provision of the seventh threaded hole, so as to ensure a stable connection with the seventh bolt 2571.

[0339] A seventh reinforcement portion is provided on the front cross beam 221 , and a seventh threaded hole is provided on the seventh reinforcement portion so as to be connected with the seventh bolt 2571 , and the seventh bolt 2571 can be firmly connected to the front cross beam 221 .

[0340] In some embodiments, see Figure 13 and Figure 14The seventh reinforcement part includes a seventh nut installed on the front cross beam 221, the seventh nut is located in the second inner cavity, a seventh through hole is provided on the front cross beam 221 at the seventh nut, the inner hole of the seventh nut forms a seventh threaded hole, and the seventh bolt 2571 is threadedly connected to the seventh nut.

[0341] The seventh nut is a nut provided on the front crossbeam 221 and used to connect the seventh bolt 2571. Positioning the seventh nut within the second inner cavity reduces space usage and allows for full utilization of the space within the second inner cavity. Specifically, before fabricating the front crossbeam 221, the seventh nut can be installed on the structural member corresponding to the front crossbeam 221, which is then connected to other panels to form the front crossbeam 221 structure.

[0342] A seventh nut is provided in the second inner cavity, and a seventh through hole is correspondingly provided on the front cross beam 221 to connect the seventh bolt 2571. The structure is simple and the cost is low. During the process of manufacturing the front cross beam 221, the seventh nut can be fixed to the front cross beam 221, which is convenient for manufacturing.

[0343] In some embodiments, see Figure 13 and Figure 14 The seventh reinforcement portion includes a third reinforcement plate, the third reinforcement plate is located in the second inner cavity, a seventh threaded hole is provided on the third reinforcement plate, and a seventh through hole is provided on the front cross beam 221 corresponding to the seventh threaded hole.

[0344] The third reinforcing plate refers to a plate member disposed in the second inner cavity of the front cross beam 221. For example, the third reinforcing plate can be pushed into the position corresponding to the seventh bolt 2571 from the end of the front cross beam 221.

[0345] The third reinforcing plate is provided corresponding to the front cross beam 221 , which not only increases the structural strength of the front cross beam 221 , but also allows the seventh threaded hole to be directly made on the front cross beam 221 , thereby reducing the number of parts and facilitating processing.

[0346] In some embodiments, see Figure 13 and Figure 14 When a third reinforcing plate is provided on the front cross beam 221 , a seventh nut can be provided on the third reinforcing plate to further increase the structural strength of the portion of the front cross beam 221 connected to the seventh bolt 2571 .

[0347] In some embodiments, the structural shape of the fifth reinforcement portion and the structural shape of the seventh reinforcement portion can be the same or similar, or different, and can be selected according to specific needs.

[0348] According to some embodiments of the present application, the present application also provides a frame 200, including a front cabin 203 and a chemical cabin 201; the chemical cabin 201 includes a longitudinal beam 21 extending along the front-to-back direction X and a cross beam 22 connecting the longitudinal beam 21, the longitudinal beam 21 has a top side surface 211 along the top of the height direction Z and side surfaces 213 located on both sides of the left-right direction Y, the longitudinal beam 21 includes two side beams 210, and the two ends of the cross beam 22 are respectively connected to the two side beams 210, and the side beams 210 have an inner side surface 2131 close to the other side beam 210 and an outer side surface 2132 opposite to the inner side surface 2131; the front cabin 203 includes a torsion box 23 respectively connected to the front end of the two side beams 210 and a connecting beam 24 connecting the two torsion boxes 23, each torsion box 23 is provided with a cavity 2030, and the cavity 2030 extends into the connecting beam 24. The torsion box 23 includes a first connecting portion 231 that is removably connected to the top side 211 of the corresponding longitudinal beam 21, and a second connecting portion 232 that is removably connected to the inner side 2131 of the corresponding side rail 210. The vehicle frame 200 includes a first fastener 251 that extends upward through the longitudinal beam 21 from bottom to top in the height direction Z and is removably connected to the first connecting portion 231. The vehicle frame 200 includes a second fastener 252 that extends from the outer side 2132 toward the inner side 2131 of the side rail 210 and is removably connected to the second connecting portion 232. A first edge plate 233 protrudes outward from the edge of the torsion box 23. The first edge plate 233 includes a first edge portion 2331 located at a position corresponding to the top side 211 and a second edge portion 2332 located at a position corresponding to the inner side 2131. The first edge portion 2331 extends rearward from the first connecting portion 231. The second edge portion 2332 is removably connected to the inner side surface 2131 of the side member 210. The vehicle frame 200 includes a third fastener 253 that passes through the second edge portion 2332 and is removably connected to the side member 210 along the left-right direction Y. A second edge plate 241 extends rearward from the connecting beam 24. The crossbeam 22 includes a front crossbeam 221 that connects to the front end of the longitudinal beam 21. The second edge plate 241 is removably connected to the upper surface of the front crossbeam 221. The vehicle frame 200 includes a fourth fastener 254 that removably connects the front crossbeam 221 to the second edge plate 241 along the height direction Z. The vehicle frame 200 includes a subframe 205 and a bracket 27. The subframe 205 includes a longitudinal beam 2051 extending along the front-back direction X. The bracket 27 is provided with a cavity 270 for receiving the longitudinal beam 2051. The vehicle frame 200 includes a fifth fastener 255, which passes through the bracket 27 and the corresponding longitudinal beam 2051 to be removably connected to the connecting beam 24. The bracket 27 has first adapter portions 271 on opposite sides of the cavity 270, which are removably connected to the connecting beam 24. The vehicle frame 200 includes a sixth fastener 256, which passes through the first adapter portions 271 to be removably connected to the connecting beam 24.The bracket 27 has second adapters 272 on opposite sides of the cavity 270. The second adapters 272 are detachably connected to the front surface of the front crossbeam 221. The frame 200 includes a seventh fastener 257 that passes through the second adapters 272 and is detachably connected to the front crossbeam 221.

[0349] The above-mentioned front cabin 203 structure can be conveniently detachably connected to the chemical cabin 201, and can make the front cabin 203 and the chemical cabin 201 firmly connected, which is convenient for assembly. The torsion box 23 and the connecting beam 24 of the front cabin 203 can be formed by splicing plates to facilitate processing and manufacturing.

[0350] According to some embodiments of the present application, the present application further provides a lower vehicle body 110 comprising a vehicle frame 200 as described in the above embodiment.

[0351] According to some embodiments of the present application, the present application further provides a vehicle body structure 101 , including a vehicle frame 200 as in the above embodiment or a lower vehicle body 110 as in the above embodiment.

[0352] According to some embodiments of the present application, the present application further provides a vehicle 100 , including a vehicle frame 200 as in the above embodiment, a lower vehicle body 110 as in the above embodiment, or a vehicle body structure 101 as in the above embodiment.

[0353] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A vehicle frame, characterized in that: Including the front cabin and chemical cabin; The chemical cabin includes a longitudinal beam extending in a front-to-rear direction and a cross beam connecting the longitudinal beams, wherein the extending direction of the cross beam intersects the front-to-rear direction, and the longitudinal beam has a top side surface at the top in the height direction; The front cabin includes a torsion box connected to the front end of the longitudinal beam, a cavity is provided in the torsion box, and the torsion box includes a first connecting portion detachably connected to the top side surface of the corresponding longitudinal beam.

2. The frame according to claim 1, wherein: The vehicle frame includes a first fastener, which passes through the longitudinal beam from bottom to top along the height direction and is detachably connected to the first connecting portion.

3. The frame according to claim 2, wherein: The first fastener includes a first bolt threadably connected to the first connecting portion.

4. The frame according to claim 3, wherein: A first reinforcement portion is correspondingly provided on the first connection portion, and the first reinforcement portion is provided with a first threaded hole adapted to connect with the first bolt.

5. The frame according to claim 4, wherein: The first reinforcement portion includes a first nut mounted on the first connection portion, the first nut is located in the cavity, a first through hole is provided on the first connection portion at the first nut, an inner hole of the first nut forms the first threaded hole, and the first bolt is threadedly connected to the first nut; And / or, the first reinforcement portion includes a first thickened area arranged in an area on the first connecting portion corresponding to the first bolt, the thickness of the first thickened area is greater than the thickness of other areas of the first connecting portion, and the first thickened area is provided with the first threaded hole.

6. The frame according to any one of claims 1 to 5, characterized in that The longitudinal beam has side surfaces respectively located on the left and right sides, and the torsion box includes a second connection portion detachably connected to at least one of the side surfaces of the longitudinal beam.

7. The frame according to claim 6, wherein: The vehicle frame includes a second fastener, which passes through the longitudinal beam and is detachably connected to the corresponding second connecting portion.

8. The frame according to claim 7, wherein: The second fastener includes a second bolt, and the second bolt is threadedly connected to the second connecting portion.

9. The frame according to claim 8, wherein: A second reinforcement portion is correspondingly provided on the second connection portion, and the second reinforcement portion is provided with a second threaded hole adapted to connect with the second bolt.

10. The frame according to claim 9, wherein: The second reinforcement portion includes a second nut mounted on the second connection portion, the second nut is located in the cavity, a second through hole is provided on the second connection portion at the second nut, an inner hole of the second nut forms the second threaded hole, and the second bolt is threadedly connected to the second nut; And / or, the second reinforcement portion includes a second thickened area arranged in an area corresponding to the second bolt on the second connecting portion, the thickness of the second thickened area is greater than the thickness of other areas of the second connecting portion, and the second thickened area is provided with the second threaded hole.

11. The frame according to any one of claims 1 to 5 and 7 to 10, characterized in that: A first edge plate is protruded outward from the edge of the torsion box.

12. The frame according to claim 11, wherein: The first edge plate includes a first edge portion located at a position corresponding to the top side surface, the first edge portion is formed by extending backward from the first connecting portion, the first edge portion is provided with a first through hole, and a second through hole is opened on the longitudinal beam at a position corresponding to the first through hole.

13. The frame according to claim 11, wherein: The first edge plate includes a second edge portion adapted to be detachably connected to a side surface of one side of the longitudinal beam.

14. The frame according to claim 13, wherein: The vehicle frame includes a third fastener, which passes through the second edge portion in a left-right direction and is detachably connected to the longitudinal beam.

15. The frame according to claim 14, wherein: The third fastener includes a third bolt threadedly connected to the longitudinal beam.

16. The frame according to claim 15, wherein: The longitudinal beam is provided with a first inner cavity extending along its length direction, and a third reinforcement portion is correspondingly provided on the longitudinal beam. The third reinforcement portion is provided with a third threaded hole adapted to connect with the third bolt.

17. The frame according to claim 16, wherein: The third reinforcement portion includes a third nut, the third nut is located in the first inner cavity, a third through hole is provided on the longitudinal beam at the third nut, an inner hole of the third nut forms the third threaded hole, and the third bolt is threadedly connected to the third nut; And / or, the third reinforcement portion includes a first reinforcement plate, the first reinforcement plate is located in the first inner cavity, the first reinforcement plate is provided with the third threaded hole, and the longitudinal beam is provided with a third through hole corresponding to the third threaded hole.

18. The frame according to any one of claims 1-5, 7-10, 12-17, wherein: The front cabin further includes a connecting beam connected to the torsion box, and the cavity extends into the connecting beam.

19. The frame according to claim 18, wherein: The connecting beam is provided with a second edge plate extending rearwardly. The cross beam comprises a front cross beam connected to the front end portion of the longitudinal beam. The second edge plate is detachably connected to the upper surface of the front cross beam.

20. The frame according to claim 19, wherein: The vehicle frame includes a fourth fastener, and the fourth fastener is detachably connected to the front cross beam and the second edge plate along a height direction.

21. The frame according to claim 20, wherein: The fourth fastener passes through the second edge plate from top to bottom and is connected to the front cross beam.

22. The frame according to any one of claims 19 to 21, wherein: The vehicle frame includes a sub-frame and a bracket. The sub-frame includes a longitudinal beam extending in the front-rear direction. The bracket is provided with a cavity for inserting the longitudinal beam. The bracket is connected to the connecting beam.

23. The frame according to claim 22, wherein: The vehicle frame includes a fifth fastener, which passes through the bracket and the corresponding longitudinal beam and is detachably connected to the connecting beam.

24. The frame according to claim 22, wherein: The bracket is provided with first adapting parts on two opposite sides of the cavity, respectively. The first adapting parts are detachably connected to the connecting beam.

25. The frame according to claim 24, wherein: The vehicle frame includes a sixth fastener, which passes through the first adapter portion and is detachably connected to the connecting beam.

26. The frame according to claim 22, wherein: The bracket is provided with second adapting parts on two opposite sides of the cavity, respectively. The second adapting parts are detachably connected to the front surface of the front crossbeam.

27. The frame according to claim 26, wherein: The vehicle frame includes a seventh fastener, which passes through the second adapter portion and is detachably connected to the front cross beam.

28. The frame of claim 18, wherein: The torsion box and the connecting beam are formed by splicing plates.

29. A lower vehicle body, characterized in that: Comprising a frame as described in any one of claims 1-28.

30. A vehicle body structure, characterized in that: It comprises the frame according to any one of claims 1 to 28 or the lower body according to claim 29.

31. A vehicle, characterized in that: It comprises the frame according to any one of claims 1 to 28, the lower body according to claim 29, or the body structure according to claim 30.

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