Subframe, chassis structure and vehicle
By installing tie rods at the body connection points of the subframe, the connection points between the subframe and the body are increased, solving the problem of insufficient lateral stiffness of the body and improving the handling performance and safety of the entire vehicle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREAT WALL MOTOR CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-12
AI Technical Summary
Insufficient lateral stiffness of the vehicle body leads to excessive deformation when subjected to lateral forces, affecting the vehicle's handling performance and safety.
Tie rods are installed at the body connection points of the subframe to increase the connection points between the subframe and the body, thereby improving the lateral stiffness of the subframe and the body. The support of the tie rods also helps prevent excessive deformation of the body.
It improves the overall handling performance and safety of the vehicle, prevents excessive deformation of the body when subjected to lateral forces, and enhances the lateral stiffness and overall structural strength of the body.
Smart Images
Figure CN224348989U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle chassis technology, and more particularly to a subframe, chassis structure, and vehicle. Background Technology
[0002] As people's living standards continue to improve, vehicles are no longer just a means of transportation. People's demands for vehicle quality are constantly increasing, and comfort, handling, and safety have become key areas of competition for automakers. During driving, the lateral forces on the wheels are transmitted to the body through the front subframe. If the lateral stiffness of the body is insufficient, it is prone to excessive deformation under lateral forces, thus affecting the overall handling performance. Therefore, improving the lateral stiffness of the vehicle to better enhance handling performance is a crucial aspect of vehicle performance control and has a significant impact on overall vehicle safety. Utility Model Content
[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a subframe, chassis structure and vehicle, which improves the lateral stiffness of the subframe and the vehicle body by setting tie rods at the body connection of the subframe, thereby helping to improve the handling performance and safety of the whole vehicle.
[0004] The first aspect of this application provides a subframe, comprising:
[0005] The subframe body has front suspension connection parts on two opposite sides and body connection parts on the rear of the subframe body located on both sides of the central axis of the subframe body.
[0006] A tie rod, one end of which is connected to the vehicle body connection part, and the other end of which extends toward the rear of the subframe body and is inclined in a direction away from the central axis of the subframe body, for connection with the side beam of the vehicle body.
[0007] The subframe provided in this application has front suspension connecting portions on two opposite sides of the subframe body, which connect to the front suspension, and the front suspension connects to the wheels, thus connecting the wheels to the subframe via the front suspension. The subframe body also has body connecting portions located on either side of its central axis at the rear, connecting to the vehicle body, thus connecting the subframe body to the vehicle body. A tie rod is provided, with one end connected to the body connecting portion of the subframe body and the other end facing the subframe body. The tie rod extends rearward and tilts away from the central axis of the subframe body to connect with the side beams of the vehicle body. This increases the connection points between the subframe body and the vehicle body through the tie rod. When a lateral force is applied near the wheel, the lateral force is transmitted to the subframe body through the front suspension, and then to the vehicle body through the body connection. Due to the addition of the tie rod, the vehicle body is better supported, and the lateral stiffness of the subframe body and the vehicle body is improved, thereby preventing excessive deformation of the vehicle body under lateral force and helping to improve the handling performance and safety of the entire vehicle.
[0008] In some embodiments, along the width direction of the subframe body, one end of the tie rod away from the subframe body extends beyond the outermost edge of the subframe body.
[0009] The above configuration increases the support distance of the subframe along the width direction by using tie rods, thereby providing good lateral support and helping to improve the lateral stiffness of the vehicle body, prevent excessive deformation of the body, and thus improve the overall vehicle handling performance.
[0010] In some embodiments, the tie rod is a hollow tube, and both ends of the tie rod are flattened along its length to form a structure that is thick in the middle and thin at both ends.
[0011] With the above-mentioned design, the tie rod adopts a hollow tube, making it lightweight and low-cost. By flattening both ends of the tie rod along its length, it is formed into a structure that is thick in the middle and thin at both ends. When viewed from the side, the tie rod resembles an arc shape. This design helps to improve the overall structural strength of the tie rod and allows both ends of the tie rod along its length to better fit with the subframe body and the side beams of the vehicle body, facilitating the fixation of the tie rod and the subframe body, as well as the fixation of the tie rod and the side beams of the vehicle body.
[0012] In some embodiments, the tie rod is formed as narrow in the middle and wide at both ends along the top view of the subframe body.
[0013] The above configuration allows the tie rod to be narrow in the middle and wide at both ends. The two ends of the tie rod are used to connect with the subframe body and the side beams of the vehicle body. By making the ends of the tie rod wide, it is easier to fix the tie rod to the subframe body and the side beams of the vehicle body, and it is also beneficial to improve the connection strength between the tie rod and the subframe body, as well as the connection strength between the tie rod and the side beams of the vehicle body. At the same time, the narrow middle of the tie rod increases the gap between the tie rod and the surrounding parts, which is more conducive to the surrounding layout, and there is no need to consider the surrounding pipelines and other components during the layout.
[0014] In some embodiments, mounting holes are respectively provided at both ends of the tie rod along the length direction. One end of the tie rod is connected to the subframe body through a first connector passing through one of the mounting holes, and the other end of the tie rod is connected to the vehicle body through a second connector passing through the other mounting hole.
[0015] Alternatively, one end of the tie rod along its length is welded to the subframe body, and the other end of the tie rod along its length is welded to the vehicle body.
[0016] By providing mounting holes at both ends of the tie rod along its length, connectors passing through these holes allow for connection between the tie rod and the subframe body, as well as between the tie rod and the vehicle body. This design is simple in structure, easy to assemble, and allows for convenient disassembly and replacement of the tie rod as needed. Alternatively, welding can be used to connect the tie rod to the subframe body and to the vehicle body to ensure a secure connection.
[0017] In some embodiments, the rear of the subframe body is provided with two body connecting parts, and the two body connecting parts are respectively located on both sides of the central axis of the subframe body;
[0018] The number of tie rods is two, and the two tie rods are respectively connected to the two body connecting parts, and the two tie rods extend at an angle away from each other in the direction toward the rear of the subframe body.
[0019] The above configuration utilizes two tie rods to better enhance the lateral stiffness of the vehicle body. When the left wheel is subjected to lateral force, the left tie rod effectively supports the vehicle body, preventing significant deformation on the left side. Similarly, when the right wheel is subjected to lateral force, the right tie rod effectively supports the vehicle body, preventing significant deformation on the right side. Specifically, the two tie rods can be symmetrically designed to further enhance the overall structural strength and lateral stiffness of the vehicle body.
[0020] A second aspect of this application provides a chassis structure, including a vehicle body and a subframe as described in any of the preceding claims;
[0021] The subframe is mounted below the vehicle body. The subframe body is connected to the vehicle body via the vehicle body connecting part. One end of the tie rod is connected to the subframe body, and the other end of the tie rod is connected to the side beam of the vehicle body.
[0022] The chassis structure provided in this application includes a vehicle body and a subframe located below the vehicle body. The subframe includes a subframe body and tie rods. The rear of the subframe body has body connection parts located on both sides of the central axis of the subframe body. The subframe body is connected to the vehicle body through the body connection parts. The tie rods connect the subframe body and the side beams of the vehicle body. In this way, the tie rods increase the connection points between the subframe body and the vehicle body. When lateral forces are applied near the wheels, the addition of tie rods better supports the vehicle body, improves the lateral stiffness of the subframe body and the vehicle body, and thus prevents excessive deformation of the vehicle body under lateral forces, which helps to improve the handling performance and safety of the vehicle.
[0023] In some embodiments, the vehicle body is provided with a first force transmission channel located behind the body connection portion and extending in the front-rear direction;
[0024] The tie rod is connected between the vehicle body connection and the side beam. The side beam is provided with a second force transmission channel located behind the tie rod and extending in the front-rear direction.
[0025] With the above configuration, when a vehicle collision occurs, a force transmission channel extending along the front-rear direction of the vehicle body can be added. This allows the collision energy transmitted to the vehicle body connection to be transmitted not only through the first force transmission channel, but also through the tie rod and then through the second force transmission channel. This helps to mitigate the collision, disperse the impact on the vehicle's cab, and thus improve the overall vehicle safety.
[0026] In some embodiments, the vehicle body is provided with a torque box located between the side beam and the body connection portion. The torque box extends along the width direction of the vehicle body, and the tie rod, the body connection portion, the torque box, and the side beam together form a triangular support structure.
[0027] The above-mentioned design helps to improve the rigidity of the vehicle body. At the same time, in the event of a side collision, the constructed triangular support structure can better support the vehicle body, thereby reducing the deformation of the vehicle body during a side collision and improving the overall safety of the vehicle.
[0028] A third aspect of this application provides a vehicle including a chassis structure as described in any of the preceding claims. Attached Figure Description
[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a schematic diagram of the subframe structure provided in an embodiment of this application;
[0032] Figure 2 for Figure 1 A side view of the subframe structure shown;
[0033] Figure 3 This is a structural schematic diagram of the tie rod of the subframe provided in an embodiment of this application;
[0034] Figure 4 for Figure 3 A side view of the structural schematic diagram of the tie rod shown;
[0035] Figure 5 for Figure 3 A top-view structural schematic diagram of the tie rod shown;
[0036] Figure 6 This is a partial structural diagram of the chassis structure provided in an embodiment of this application.
[0037] Among them, 1. Subframe body; 11. Front suspension connection part; 12. Body connection part;
[0038] 2. Tie rod; 21. Mounting hole; 22. Intermediate section; 23. Flattened section;
[0039] 3. Body; 31. Side beam; 32. Torque box; 3a. First force transmission channel; 3b. Second force transmission channel;
[0040] 4. Wheels. Detailed Implementation
[0041] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0042] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.
[0043] As people's living standards continue to improve, vehicles are no longer just a means of transportation. People's demands for vehicle quality are constantly increasing, and comfort, handling, and safety have become key areas of competition for automakers. Currently, vehicles typically have a subframe mounted under the body, connected to the chassis. The wheels are connected to the front suspension, which in turn is connected to the subframe. During driving, when lateral forces are applied near the wheels, these forces are transmitted through the front suspension to the subframe, and then through the subframe to the chassis. If the lateral stiffness of the chassis is insufficient, it can easily lead to excessive deformation under lateral forces, thus affecting the overall handling performance. Therefore, improving the lateral stiffness of the vehicle to better enhance handling performance is a crucial aspect of vehicle performance control and has a significant impact on overall vehicle safety.
[0044] Based on this, embodiments of this application provide a subframe, chassis structure, and vehicle, which improves the lateral stiffness of the subframe and the vehicle body by setting tie rods at the body connection of the subframe, thereby helping to improve the handling performance and safety of the entire vehicle.
[0045] Reference Figures 1 to 6 As shown, some embodiments of this application provide a subframe, including: a subframe body 1 and a tie rod 2.
[0046] The subframe body 1 has front suspension connecting parts 11 on two opposite sides, and body connecting parts 12 located on both sides of the central axis of the subframe body 1 at the rear.
[0047] It should be noted that, referring to Figure 1 As shown in the diagram, the dotted line 'c' represents the central axis of the subframe body 1. The central axis of the subframe body 1 extends along the front-rear direction of the subframe body 1, and it roughly coincides with the central axis of the vehicle. In other words, the subframe body 1 has a roughly symmetrical structure, and the axis of symmetry of the subframe body 1 is its central axis.
[0048] By providing front suspension connecting parts 11 on two opposite sides of the subframe body 1, the front suspension is connected to the wheel 4 through the front suspension connecting parts 11. By providing body connecting parts 12 on both sides of the central axis of the subframe body 1 at the rear of the subframe body 1, the body 3 is connected through the body connecting parts 12, thereby connecting the subframe body 1 and the body 3.
[0049] Reference Figure 1 , Figure 2 and Figure 6 As shown, the tie rod 2 connects the subframe body 1 and the vehicle body 3. Specifically, one end of the tie rod 2 is connected to the vehicle body connection part 12 on the subframe body 1, and the other end of the tie rod 2 extends toward the rear of the subframe body 1 and is inclined in a direction away from the central axis of the subframe body 1, for connection with the side beam 31 of the vehicle body 3.
[0050] It should be noted that, referring to Figure 1 and Figure 6 As shown in the figure, the double-headed arrow X in the figure represents the front-rear direction of the subframe body 1, that is, the front-rear direction of the vehicle. The arrow pointing backward points to the rear of the subframe body 1.
[0051] The subframe provided in this embodiment of the application includes a tie rod 2, with one end of the tie rod 2 connected to the body connection portion 12 of the subframe body 1 and the other end of the tie rod 2 extending towards the rear of the subframe body 1 and inclined in a direction away from the central axis of the subframe body 1, for connection with the side beam 31 of the body 3. In this way, the tie rod 2 increases the connection point between the subframe body 1 and the body 3. When a lateral force is applied near the wheel 4, the lateral force will be transmitted to the subframe body 1 through the front suspension, and the subframe body 1 will be transmitted to the body 3 through the body connection portion 12. Due to the addition of the tie rod 2, the body 3 is better supported, and the lateral stiffness of the subframe body 1 and the body 3 is improved, thereby preventing excessive deformation of the body 3 under lateral force, which helps to improve the handling performance and safety of the whole vehicle.
[0052] In some embodiments, refer to Figure 1 and Figure 2 As shown, along the width direction of the subframe body 1, the end of the tie rod 2 away from the subframe body 1 extends beyond the outermost edge of the subframe body 1.
[0053] It should be noted that, referring to Figure 1 and Figure 6 As shown in the figure, the direction pointed to by the double-headed arrow Y is the width direction of the subframe body 1, which is also the width direction of the vehicle.
[0054] This configuration increases the support distance of the subframe along the width direction, i.e., the support distance in the Y direction, by utilizing the tie rod 2. This allows the tie rod 2 to provide good lateral support, which helps to improve the lateral stiffness of the body 3, prevents excessive deformation of the body 3, and thus improves the overall vehicle handling performance.
[0055] Specifically, refer to Figure 6As shown, along the width direction of the subframe body 1, the end of the tie rod 2 away from the subframe body 1 extends beyond the outermost edge of the subframe body 1 and extends to the side beam 31 of the vehicle body 3, and is connected to the side beam 31 of the vehicle body 3.
[0056] It should be understood that the side beam 31 of the body 3 is located at the outermost edge of the body 3 along the width direction. The end of the tie rod 2 away from the subframe body 1 extends to the side beam 31 of the body 3, that is, extends to the outermost edge of the body 3 along the width direction. With this arrangement, the tie rod 2 can be used to increase the support distance of the subframe along the width direction as much as possible, that is, the support distance in the Y direction, so as to achieve a better lateral support effect.
[0057] In some embodiments, refer to Figures 3 to 5 As shown, tie rod 2 is a hollow tube. The use of a hollow tube in tie rod 2 results in its light weight, low cost, and high structural strength. Specifically, tie rod 2 can adopt a tube beam structure; for example, the tube beam can be a circular cross-section tube beam with an outer diameter of 25mm, 30mm, 35mm, etc.
[0058] Reference Figure 3 and Figure 4 As shown, the two ends of the tie rod 2 along the length direction are flattened to make the tie rod 2 have a structure that is thick in the middle and thin at both ends.
[0059] It is understandable that by flattening both ends of the tie rod 2 along its length, the tie rod 2 is formed into a structure that is thick in the middle and thin at both ends. When viewed from the side, the tie rod 2 resembles an arc shape. This design helps to improve the overall structural strength of the tie rod 2 and allows both ends of the tie rod 2 along its length to better fit with the subframe body 1 and the side beams 31 of the body 3, so as to fix the tie rod 2 and the subframe body 1, as well as the tie rod 2 and the side beams 31 of the body 3.
[0060] Reference Figure 5 As shown, along the top view of the subframe body 1, the tie rod 2 is formed into a structure that is narrow in the middle and wide at both ends.
[0061] It is understandable that by flattening both ends of the tie rod 2 along its length, the tie rod 2 is formed into a structure that is narrow in the middle and wide at both ends. The two ends of the tie rod 2 are used to connect with the subframe body 1 and the side beams 31 of the body 3. By setting the ends of the tie rod 2 to be wide, it is easier for the tie rod 2 to be fixed with the subframe body 1 and the side beams 31 of the body 3, and it is also beneficial to improve the connection strength between the tie rod 2 and the subframe body 1, as well as the connection strength between the tie rod 2 and the side beams 31 of the body 3. At the same time, the narrow middle of the tie rod 2 is conducive to increasing the gap between the tie rod 2 and the surrounding parts, which is more conducive to the surrounding layout, and there is no need to consider the surrounding pipelines and other components during the layout.
[0062] In some embodiments, refer to Figures 3 to 5 As shown, the tie rod 2 has mounting holes 21 at both ends along its length. One end of the tie rod 2 is connected to the subframe body 1 through a first connector that passes through a mounting hole 21, and the other end of the tie rod 2 is connected to the vehicle body 3 through a second connector that passes through another mounting hole 21.
[0063] With this configuration, mounting holes 21 are provided at both ends of the tie rod 2 along its length, so that the tie rod 2 can be connected to the subframe body 1 and the vehicle body 3 through the connectors passing through the mounting holes 21. The structure is simple and easy to assemble. Furthermore, the tie rod 2 can be easily disassembled and replaced as needed.
[0064] In practical implementation, the first connector can be a connecting bolt or similar structure, and the second connector can also be a connecting bolt or similar structure, or even a rivet or other connector. The mounting hole 21 can be set as a round hole or an elongated hole as needed. By setting the mounting hole 21 as an elongated hole, it is easier for the connector to be smoothly inserted into the mounting hole 21.
[0065] Of course, the connection between the tie rod 2 and the subframe body 1, and between the tie rod 2 and the body 3, can also be achieved by welding or other connection methods. In some other embodiments, one end of the tie rod 2 along its length is welded to the subframe body 1, and the other end of the tie rod 2 along its length is welded to the body 3. This arrangement ensures the robustness of the connection between the tie rod 2 and the subframe body 1, and between the tie rod 2 and the body 3.
[0066] It should be noted that the tie rod 2 can be a one-piece structure, formed by partially flattening a hollow tube. Specifically, it is formed by flattening both ends of the hollow tube. The hollow tube can be a hollow circular tube, meaning its cross-sectional shape can be circular. However, the cross-sectional shape can also be rectangular, elliptical, polygonal, or other shapes. In other words, the tie rod 2 is not limited to being formed by partially flattening a hollow circular tube; it can also be formed by partially flattening other shapes of tubes, such as hollow square tubes. Furthermore, the tie rod 2 is not limited to being a hollow tube; it can also be a solid rod or other structural form.
[0067] In some embodiments, refer to Figures 3 to 5 As shown, the tie rod 2 includes an intermediate section 22 and flattened sections 23 connected to both ends of the intermediate section 22. The intermediate section 22 can be a hollow circular tube segment, and the flattened sections 23 can be formed by flattening the circular tube. Specifically, the flattened section 23 can include a transition section and a flat section. The transition section connects the intermediate section 22 and the flat section, and its thickness gradually decreases along the direction from the intermediate section 22 to the flat section to achieve a smooth transition in thickness between the intermediate section 22 and the flat section. The flat section can be a thin double-layered flat plate structure, and its thickness can be equal to or slightly greater than twice the thickness of the tube wall of the intermediate section 22.
[0068] In addition, it should be noted that in order to prevent the end of the tie rod 2 from protruding beyond the outermost edge of the vehicle body 3, the end of the tie rod 2 can be rounded or beveled.
[0069] Of course, the tie rod 2 is not limited to being formed by partially flattening a hollow tube. The tie rod 2 may not be partially flattened, or it may be flattened entirely. Furthermore, the tie rod 2 may also adopt other structural forms such as plate-like or sheet-like components with a certain wall thickness. The specific structural form of the tie rod 2 can be reasonably set according to the actual situation.
[0070] In some embodiments, refer to Figure 1 and Figure 2 As shown, the rear of the subframe body 1 is provided with two body connecting parts 12, which are located on both sides of the central axis of the subframe body 1. There are two tie rods 2, which are connected to the two body connecting parts 12 respectively, and extend in an inclined direction away from each other in the direction towards the rear of the subframe body 1.
[0071] This configuration utilizes two tie rods 2 to better enhance the lateral stiffness of the vehicle body 3. When the left wheel 4 is subjected to lateral force, the left tie rod 2 effectively supports the vehicle body 3, preventing significant deformation on the left side. Similarly, when the right wheel 4 is subjected to lateral force, the right tie rod 2 effectively supports the vehicle body 3, preventing significant deformation on the right side. Specifically, the two tie rods 2 can be symmetrically arranged to further enhance the overall structural strength and lateral stiffness of the vehicle body 3.
[0072] Reference Figure 6 As shown, some other embodiments of this application provide a chassis structure, including a vehicle body 3 and a subframe as described in any of the above embodiments. The subframe is located below the vehicle body 3, the subframe body 1 is connected to the vehicle body 3 via a vehicle body connecting part 12, one end of a tie rod 2 is connected to the subframe body 1, and the other end of the tie rod 2 is connected to a side beam 31 of the vehicle body 3.
[0073] The chassis structure provided in this application embodiment includes a vehicle body 3 and a subframe located below the vehicle body 3. The subframe includes a subframe body 1 and a tie rod 2. The rear of the subframe body 1 is provided with body connecting portions 12 located on both sides of the central axis of the subframe body 1. The subframe body 1 is connected to the vehicle body 3 through the body connecting portions 12. Specifically, the body connecting portions 12 and the vehicle body 3 can be connected by connectors. One or more connecting holes (also referred to as body connecting holes) are provided at the body connecting portions 12. The body connecting portions 12 and the vehicle body 3 are connected by connectors (such as connecting bolts) passing through the connecting holes. Of course, the body connecting portions 12 and the vehicle body 3 can also be connected by welding. One or more welding points (also referred to as body welding points) are provided at the body connecting portions 12. The body connecting portions 12 and the vehicle body 3 are welded together through one or more welding points.
[0074] The tie rod 2 connects the subframe body 1 and the side beam 31 of the body 3. In this way, the tie rod 2 increases the connection point between the subframe body 1 and the body 3. When a lateral force is applied near the wheel 4, the addition of the tie rod 2 better supports the body 3, improves the lateral stiffness of the subframe body 1 and the body 3, and prevents the body 3 from deforming too much when subjected to lateral force, which helps to improve the handling performance and safety of the whole vehicle.
[0075] Specifically, one end of the tie rod 2 is connected to the body connection portion 12 of the subframe body 1, and the other end is connected to the side beam 31 of the body 3. The tie rod 2 and the body connection portion 12 can be connected via connectors. One or more connection holes (also called tie rod connection holes) are provided at the body connection portion 12, and the tie rod 2 and the body connection portion 12 are connected via connectors (such as connecting bolts) passing through the connection holes. Alternatively, the tie rod 2 and the body connection portion 12 can also be connected by welding. One or more welding points (also called tie rod welding points) are provided at the body connection portion 12, and the tie rod 2 and the body connection portion 12 are connected by welding through one or more welding points.
[0076] Furthermore, the chassis structure provided in this application embodiment, since it includes the subframe of any of the above embodiments, has the beneficial effects of the subframe of any of the above embodiments, which will not be repeated here.
[0077] In some embodiments, refer to Figure 6 As shown, the vehicle body 3 is provided with a first force transmission channel 3a located behind the vehicle body connecting part 12 and extending in the front-rear direction; the tie rod 2 is connected between the vehicle body connecting part 12 and the side beam 31, and the side beam 31 is provided with a second force transmission channel 3b located behind the tie rod 2 and extending in the front-rear direction.
[0078] Reference Figure 6 As shown in the figure, dashed arrow 3a represents the first force transmission channel, and dashed arrow 3b represents the second force transmission channel.
[0079] The position of the first force transmission channel 3a corresponds to the position of the vehicle frame longitudinal beam, and the position of the second force transmission channel 3b corresponds to the position of the side beam 31 of the vehicle body 3.
[0080] With this configuration, when a collision occurs, a force transmission channel extending along the front and rear direction of the vehicle body 3 can be increased. This allows the collision energy transmitted to the vehicle body connection 12 to be transmitted not only through the first force transmission channel 3a, but also through the tie rod 2 and then through the second force transmission channel 3b. This helps to mitigate the collision, disperse the impact on the vehicle's cab, and thus improve the overall safety of the vehicle.
[0081] In some embodiments, refer to Figure 6 As shown, the body 3 is provided with a torque box 32 located between the side beam 31 and the body connecting part 12. The torque box 32 extends along the width direction of the body 3. The tie rod 2, together with the body connecting part 12, the torque box 32 and the side beam 31, form a triangular support structure.
[0082] It should be noted that the main function of the torque box 32 is to effectively transfer energy to the corresponding transmission path when a vehicle collision occurs, thereby achieving effective transmission of collision force and improving the overall vehicle collision safety.
[0083] By setting the tie rod 2 together with the body connection part 12, the torsion box 32 and the side beam 31 to form a triangular support structure, it is beneficial to improve the rigidity of the body 3. At the same time, when the vehicle is involved in a side collision, the triangular support structure can be used to better support the body 3, thereby reducing the deformation of the body 3 when the vehicle is subjected to a side collision, thus improving the safety of the whole vehicle.
[0084] Further embodiments of this application provide a vehicle including a chassis structure as described in any of the above embodiments.
[0085] The vehicle provided in this application embodiment has the beneficial effects of the chassis structure of any of the above embodiments because it includes the chassis structure of any of the above embodiments, which will not be repeated here.
[0086] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0087] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A subframe, characterized in that, include: The subframe body (1) has front suspension connecting parts (11) on two opposite sides and body connecting parts (12) on the rear of the subframe body (1) located on both sides of the central axis of the subframe body (1). Tie rod (2), one end of which is connected to the vehicle body connection part (12), and the other end of which extends toward the rear of the subframe body (1) and is inclined toward the direction away from the central axis of the subframe body (1) for connection with the side beam (31) of the vehicle body (3).
2. The subframe according to claim 1, characterized in that, Along the width direction of the subframe body (1), the end of the tie rod (2) away from the subframe body (1) extends beyond the outermost edge of the subframe body (1).
3. The subframe according to claim 1, characterized in that, The tie rod (2) is a hollow tube. The two ends of the tie rod (2) along the length direction are flattened so that the tie rod (2) is formed into a structure that is thick in the middle and thin at both ends.
4. The subframe according to claim 3, characterized in that, Along the top view of the subframe body (1), the tie rod (2) is formed as a structure that is narrow in the middle and wide at both ends.
5. The subframe according to claim 3, characterized in that, The tie rod (2) has mounting holes (21) at both ends along its length. One end of the tie rod (2) is connected to the subframe body (1) through a first connector that passes through one of the mounting holes (21), and the other end of the tie rod (2) is connected to the vehicle body (3) through a second connector that passes through another mounting hole (21). Alternatively, one end of the tie rod (2) along the length direction is welded to the subframe body (1), and the other end of the tie rod (2) along the length direction is welded to the vehicle body (3).
6. The subframe according to claim 1, characterized in that, The rear of the subframe body (1) is provided with two body connecting parts (12), and the two body connecting parts (12) are respectively located on both sides of the central axis of the subframe body (1); There are two tie rods (2), which are respectively connected to two vehicle body connecting parts (12) and extend at an angle away from each other in the direction toward the rear of the subframe body (1).
7. A chassis structure, characterized in that, Includes the vehicle body (3) and the subframe as described in any one of claims 1 to 6; The subframe is mounted below the vehicle body (3). The subframe body (1) is connected to the vehicle body (3) through the vehicle body connecting part (12). One end of the tie rod (2) is connected to the subframe body (1), and the other end of the tie rod (2) is connected to the side beam (31) of the vehicle body (3).
8. The chassis structure according to claim 7, characterized in that, The vehicle body (3) is provided with a first force transmission channel (3a) located behind the vehicle body connection part (12) and extending in the front-rear direction; The tie rod (2) is connected between the vehicle body connection part (12) and the side beam (31). The side beam (31) is provided with a second force transmission channel (3b) located behind the tie rod (2) and extending in the front-rear direction.
9. The chassis structure according to claim 7, characterized in that, The vehicle body (3) is provided with a torque box (32) located between the side beam (31) and the vehicle body connection part (12). The torque box (32) extends along the width direction of the vehicle body (3). The tie rod (2), the vehicle body connection part (12), the torque box (32), and the side beam (31) together form a triangular support structure.
10. A vehicle, characterized in that, Includes the chassis structure as described in any one of claims 7 to 9.