A kind of longitudinal beam assembly and automobile chassis
By integrating the upper control arm and shock absorber mounting section of the suspension with the longitudinal beam, the problem of chassis installation accuracy deviation was solved, achieving the effects of simplified manufacturing and improved installation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2021-11-04
- Publication Date
- 2026-05-29
AI Technical Summary
The installation of upper control arms and shock absorbers on existing automotive chassis is difficult, time-consuming, and costly due to the precision deviation in the reserved installation structure.
Integrating the upper control arm mounting section and shock absorber mounting section of the suspension onto the longitudinal beam and molding them as a single piece simplifies the manufacturing process, reduces manufacturing costs, and improves positional accuracy.
The manufacturing process of the longitudinal beam assembly has been simplified, manufacturing costs have been reduced, installation efficiency has been improved, and the stability and reliability of the structure have been enhanced.
Smart Images
Figure CN116406338B_ABST
Abstract
Description
[0001] Cross-references
[0002] This application incorporates, in its entirety, International Patent Application No. PCT / CN2021 / 128622, filed on November 4, 2021, entitled “A Longitudinal Beam Assembly and Automobile Chassis”. Technical Field
[0003] This application relates to the technical field of automobiles, and more particularly to a longitudinal beam assembly and an automobile chassis. Background Technology
[0004] A car chassis is generally composed of various longitudinal beams, cross beams, and a floor. The longitudinal beams support and connect the various vehicle components, ensuring they are in their correct mounting positions and bearing various loads from inside and outside the vehicle. The cross beams ensure the chassis's torsional rigidity and withstand longitudinal loads, and also support major components of the vehicle. The chassis must possess sufficient strength and rigidity to withstand the vehicle's loads and impacts transmitted from the wheels.
[0005] The main component assemblies include the upper control arm of the suspension and the shock absorber, which are generally mounted on the chassis. Therefore, the chassis manufacturing needs to include provisions for mounting components such as the upper control arm of the suspension and the shock absorber to facilitate the subsequent installation of these components.
[0006] However, even if the chassis is manufactured strictly in accordance with the installation requirements of components such as the upper control arm and shock absorber, the installation of these components is still difficult due to the precision deviation of the pre-reserved installation structure on the chassis. This results in longer installation time and higher costs.
[0007] Therefore, how to solve the problem of difficult installation of components on the chassis has become an urgent problem to be solved in this field. Summary of the Invention
[0008] In view of the above problems, this application provides a longitudinal beam assembly and an automobile chassis, which integrates the upper control arm mounting part and the shock absorber mounting part of the suspension onto the longitudinal beam and integrally forms the longitudinal beam. This avoids the installation errors that occur when the upper control arm mounting part and the shock absorber mounting part are installed separately from the longitudinal beam, improves the positional accuracy of the upper control arm mounting part and the shock absorber mounting part relative to the longitudinal beam, simplifies the manufacturing process of the longitudinal beam assembly, and reduces the manufacturing cost of the longitudinal beam assembly.
[0009] According to one aspect of the embodiments of this application, a longitudinal beam assembly is provided, the longitudinal beam assembly including an integrally formed longitudinal beam and a mounting tower; the longitudinal beam is provided with a first suspension mounting part for mounting a lower suspension arm; the mounting tower is provided with a shock absorber mounting part and a second suspension mounting part for mounting a shock absorber; the second suspension mounting part is used to mount an upper suspension arm, and the mounting tower is mounted on the longitudinal beam.
[0010] By adopting the above solution, the first suspension mounting part, the second suspension mounting part, and the shock absorber mounting part are all integrated on the longitudinal beam and directly or indirectly integrally formed with the longitudinal beam. This makes the structure of the longitudinal beam assembly simpler and more compact. Compared with the method in related technologies where the mounting parts are welded to the longitudinal beam, the longitudinal beam assembly in this embodiment has a simpler manufacturing process, shorter manufacturing time, and lower manufacturing cost. Furthermore, in the longitudinal beam assembly manufactured by integral forming, there are no welding errors in the first suspension mounting part, the second suspension mounting part, and the shock absorber mounting part, and their positions are more precise, which reduces the difficulty of subsequent installation of the lower suspension arm, the upper suspension arm, and the shock absorber, and improves installation efficiency.
[0011] In some embodiments, the mounting tower includes a top wall and two first support members, with the shock absorber mounting portion disposed on the top wall and the two first support members disposed on both sides of the top wall and connecting the top wall and the longitudinal beam.
[0012] By adopting the above solution, two first support members are used to connect the top wall from both sides, making the connection between the top wall and the longitudinal beam more stable. This allows the top wall to withstand the loads transmitted by the shock absorbers and upper suspension arms during vehicle use, while also saving manufacturing materials and further reducing the overall weight of the longitudinal beam assembly.
[0013] In some embodiments, the two first supports gradually move away from each other in the direction from the top wall to the longitudinal beam, so that a triangular structure is formed between the two first supports and the longitudinal beam.
[0014] By adopting the above scheme, a triangular structure is formed between the two first support members and the longitudinal beam. The triangular structure has higher stability, enabling the installation tower to withstand greater loads without deformation during use.
[0015] In some embodiments, two suspension mounts protrude downward from the top wall, and a second suspension mount is disposed between the suspension mount and the first support member.
[0016] By adopting the above scheme, the suspension mounting base and the first support member together define the position of the second suspension mounting part, so that when the upper control arm of the suspension is installed on the suspension mounting part, it can be connected to the first support member, the suspension mounting base, or both. This provides more installation possibilities and more load attachment points for the installation of the upper control arm of the suspension, and improves the stability of the installation structure of the upper control arm of the suspension.
[0017] In some embodiments, the second suspension mounting portion includes two upper suspension arm mounting points, each upper suspension arm mounting point being disposed on a suspension mounting seat and a first support member.
[0018] By adopting the above scheme, each upper control arm of the suspension is connected to both the first support and the suspension mount during installation, resulting in a more secure installation of the upper control arms. The load borne by the upper control arms during vehicle use is transferred to the two upper control arm mounting points, and then from these points to the suspension mount and the first support. Since the suspension mount and the first support are directly or indirectly integrally formed with the longitudinal beam, they can withstand greater forces without breaking or being damaged. Therefore, the upper control arms can withstand greater loads.
[0019] In some embodiments, the mounting tower further includes two second supports disposed between the top wall and the longitudinal beam, and the two second supports are installed between the two first supports.
[0020] By adopting the above scheme, the two second support members and the two first support members are supported together between the top wall and the longitudinal beam, making the structure of the mounting tower more stable and less prone to overturning after being subjected to the impact from the shock absorber and the upper swing arm of the suspension.
[0021] In some embodiments, the suspension mount is connected to the second support member.
[0022] By adopting the above solution, during vehicle use, the second support member and the suspension mount share the force from the upper control arm mounting point on the suspension mount, making the suspension mounting part more reliable.
[0023] In some embodiments, the first support member is provided with a reinforcing portion, and the second suspension mounting portion is disposed between the suspension mounting seat and the reinforcing portion.
[0024] By adopting the above solution, the strength of the first support member at the location of the reinforcement is increased, which enables the second suspension mounting part to withstand a larger load after the upper control arm of the suspension is installed on the second suspension mounting part, and the mounting point of the upper control arm of the suspension set on the first support member will not be damaged.
[0025] In some embodiments, the mounting tower further includes a reinforcing structure in the shape of an "X" and having four connection ends, two of which are connected to the top wall and the other two of which are connected to the longitudinal beams.
[0026] By adopting the above scheme, the structural support is strengthened between the top wall and the longitudinal beams, and the special shape of the strengthened structure forms a triangular structure between the strengthened structure and the top wall, and also between the strengthened structure and the longitudinal beams, making the entire installation tower structure more stable.
[0027] In some embodiments, the connecting end connected to the top wall is connected at the intersection of the top wall and the first support member or the second support member, and the two connecting ends connected to the longitudinal beam are connected at the intersection of the longitudinal beam and the first support member or the second support member.
[0028] By adopting the above scheme, the strength is often higher at the intersection of the two components. Therefore, this embodiment sets the connection position of the reinforcing structure so that two of the connection ends of the reinforcing structure are connected to the high-strength position on the top wall, and the other two connection ends are connected to the high-strength position on the longitudinal beam. That is, the high-strength position on the top wall and the high-strength position on the longitudinal beam can directly transmit force, so that the mounting tower can withstand a greater load and maintain structural stability.
[0029] In some embodiments, the first support member and / or the second support member are integrally formed with the top wall.
[0030] By adopting the above solution, the installation tower itself has higher integration and eliminates the step of additional connection between the top wall and the first or second support component. The manufacturing process of the installation tower is simplified and the manufacturing precision is also higher.
[0031] In some embodiments, the longitudinal beam is further provided with a stabilizer bar mounting base for mounting a lateral stabilizer bar.
[0032] By adopting the above solution, the stabilizer bar can be directly installed using the stabilizer bar mounting brackets located on the longitudinal beams, eliminating the need for separate connections between the stabilizer bar and the longitudinal beam assembly using additional components, thus simplifying the installation process. Furthermore, placing the stabilizer bar mounting brackets on the longitudinal beams, which are integrally molded, ensures higher positional accuracy for the mounting brackets, facilitating rapid installation of the stabilizer bar and longitudinal beams.
[0033] In some embodiments, the longitudinal beam is further provided with a motor mounting bracket for mounting a drive motor.
[0034] By adopting the above scheme, the drive motor is mounted on the longitudinal beam, which is closer to the drive wheels of the car, so the power transmission efficiency of the drive motor is higher.
[0035] According to another aspect of the embodiments of this application, an automobile chassis is provided, including a longitudinal beam assembly, a drive unit, and a battery compartment. The drive unit is used to provide driving force for the vehicle. The battery compartment includes a battery compartment frame for housing a battery, which is used to provide power to the drive unit. The longitudinal beam assembly is detachably connected to the battery compartment frame.
[0036] By adopting the above solution, both the drive unit and the battery compartment are located in the vehicle chassis. When the battery is installed in the battery compartment, it can supply power to the drive unit at close range, providing efficient power to the drive unit.
[0037] In some embodiments, the drive unit is mounted on the longitudinal beam assembly.
[0038] By adopting the above solution, the battery is located inside the battery compartment, which is mounted on the longitudinal beam assembly. The drive unit is also mounted on the longitudinal beam assembly, and the battery compartment frame is directly connected to the longitudinal beam assembly. This eliminates the need for the crossbeams and longitudinal beams in the original chassis cab area, significantly reducing the number of vehicle parts, improving the space utilization of the chassis, and allowing the battery compartment to carry more batteries, thereby further improving the vehicle's range performance.
[0039] This embodiment integrates the first suspension mounting part, the second suspension mounting part, and the shock absorber mounting part onto the longitudinal beam assembly, directly or indirectly forming them as a single unit. This makes the longitudinal beam assembly structure simpler and more compact, reducing the number of parts, manufacturing time, and manufacturing costs. Compared to related technologies where the mounting parts are welded to the longitudinal beam, the longitudinal beam assembly in this embodiment has a simpler manufacturing process, shorter manufacturing time, and lower manufacturing costs. Furthermore, the integrated molding method eliminates welding errors in the first suspension mounting part, the second suspension mounting part, and the shock absorber mounting part, ensuring more precise positioning. This reduces the difficulty of installing the lower suspension arm, upper suspension arm, and shock absorber, improving installation efficiency.
[0040] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description
[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0042] Figure 1 This is a structural schematic diagram of a longitudinal beam assembly provided in one embodiment of this application.
[0043] Figure 2 This is a structural schematic diagram showing that the shock absorber tower, the lower control arm of the suspension, and the upper control arm of the suspension are all mounted on the longitudinal beam assembly provided in an embodiment of this application.
[0044] Figure 3 for Figure 1 A magnified structural diagram of part A in the middle.
[0045] Figure 4 This is a structural schematic diagram of a longitudinal beam assembly provided in another embodiment of this application.
[0046] Figure 5 This is a structural schematic diagram of a longitudinal beam assembly provided in an embodiment of this application, showing the installation of a lateral stabilizer bar.
[0047] Figure 6 This is a structural schematic diagram of a longitudinal beam assembly provided in another embodiment of this application.
[0048] Figure 7 This is a schematic diagram of the structure of an automobile chassis provided in an embodiment of this application.
[0049] Explanation of reference numerals in the attached figures:
[0050] 10. Longitudinal beams;
[0051] 101. First suspension mounting part; 102. Stabilizer bar mounting seat; 103. Motor mounting seat; 20. Mounting tower; 201. Shock absorber mounting part; 202. Second suspension mounting part; 203. Top wall; 204. First support member; 205. Suspension mounting seat; 2051. Upper control arm mounting point of suspension; 206. Second support member; 207. Reinforcing part; 208. Reinforcing structure; 2081. Connecting end;
[0052] 30. Lower control arm of suspension; 40. Upper control arm of suspension; 50. Shock absorber; 60. Lateral stabilizer bar; 70. Crossbeam; 80. Anti-collision beam; 90. Battery compartment frame; 100. Drive unit. Detailed Implementation
[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0055] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples.
[0056] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0057] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0058] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the longitudinal beam assembly or the vehicle chassis of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0059] Furthermore, the descriptions of directions such as the X, Y, and Z directions used to explain the operation and construction of the longitudinal beam assembly or the various components of the vehicle chassis in this embodiment are not absolute but relative. Although these directions are appropriate when the components of the battery pack are in the positions shown in the figures, they should be interpreted differently when these positions change to correspond to the changes.
[0060] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0061] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).
[0062] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0063] A car chassis typically consists of longitudinal beams and crossbeams. The longitudinal beams support and connect the various vehicle components, ensuring they are in their correct positions and bearing various loads from both inside and outside the vehicle. The crossbeams ensure the chassis's torsional rigidity and withstand longitudinal loads, and also support major components. The chassis must possess sufficient strength and rigidity to withstand the vehicle's loads and impacts from the wheels.
[0064] The main component assemblies include the upper control arm of the suspension and the shock absorber, which are generally mounted on the chassis. Therefore, the chassis manufacturing needs to include provisions for mounting components such as the upper control arm of the suspension and the shock absorber to facilitate the subsequent installation of these components.
[0065] However, even if the chassis is manufactured strictly in accordance with the installation requirements of components such as the upper control arm and shock absorber, the installation of these components is still difficult due to the precision deviation of the pre-reserved installation structure on the chassis. This results in longer installation time and higher costs.
[0066] The inventors discovered through research that this is because the longitudinal beams of most car models on the market are welded together from multiple parts, requiring the development of different molds to cast the corresponding parts. Furthermore, since the upper control arms and shock absorbers of a car's suspension are mounted on different parts, and there are inevitable deviations in position and shape between these parts during the welding process, the installation of the upper control arms and shock absorbers becomes difficult, consequently increasing costs.
[0067] In addition, due to the large number of weld points and weld seams in the welded chassis, the structural safety and reliability of the car chassis are also severely reduced.
[0068] In view of this, the present application provides a longitudinal beam assembly that integrates the upper control arm mounting part and the shock absorber mounting part of the suspension onto the longitudinal beam and integrally forms the longitudinal beam. This avoids installation errors that occur during the separate installation of the upper control arm mounting part and the shock absorber mounting part with the longitudinal beam, improves the positional accuracy of the upper control arm mounting part and the shock absorber mounting part relative to the longitudinal beam, simplifies the manufacturing process of the longitudinal beam assembly, reduces the manufacturing cost of the longitudinal beam assembly, and also provides higher structural safety and reliability of the longitudinal beam assembly.
[0069] Figure 1 This is a structural schematic diagram of a longitudinal beam assembly provided in one embodiment of this application. Figure 2 This is a structural diagram showing that the shock absorber tower, the lower control arm 30, and the upper control arm 40 are all mounted on the longitudinal beam assembly, as shown below. Figure 1 and Figure 2 As shown, the longitudinal beam assembly provided in this embodiment includes a longitudinal beam 10 and a mounting tower 20; the longitudinal beam 10 is provided with a first suspension mounting part 101, which is used to mount the lower suspension arm 30; the mounting tower 20 is provided with a shock absorber mounting part 201 and a second suspension mounting part 202, which is used to mount a shock absorber 50; the second suspension mounting part 202 is used to mount an upper suspension arm 40; the mounting tower 20 is mounted on the longitudinal beam 10.
[0070] The longitudinal beam 10 is made of steel or aluminum alloy. It can be straight or curved in a plane or space. The cross-section of the longitudinal beam 10 can be uniform or non-uniform. The cross-sectional shape at different locations can be the same or different; for example, the cross-sectional shape at different locations of the longitudinal beam 10 can be a channel shape with an opening on one side. Furthermore, the longitudinal beam 10 can be box-shaped, with internal partitions connecting the side walls in any different directions to reinforce the longitudinal beam 10.
[0071] The longitudinal beam 10 is integrally formed, and the longitudinal beam 10 and the mounting tower 20 are also integrally formed, for example, the longitudinal beam 10 and the mounting tower 20 are integrally formed by casting process.
[0072] Mounting tower 20 is a protruding structure above longitudinal beam 10. Its structure and shape are not specifically defined. However, since shock absorbers 50 and upper suspension arms 40 need to be installed on mounting tower 20, and shock absorbers 50 and upper suspension arms 40 are important components connecting the vehicle body and chassis, they need to withstand large lateral loads, longitudinal loads and torsional forces. These forces will ultimately be transmitted to mounting tower 20 through shock absorbers 50 and upper suspension arms 40, and then to longitudinal beam 10. Therefore, mounting tower 20 needs to have sufficient strength and rigidity to withstand these loads.
[0073] Since the mounting tower 20 needs to be equipped with a shock absorber mounting part 201 and a second suspension mounting part 202, space needs to be reserved between the mounting tower 20 and the longitudinal beam 10 for the installation of suspension components such as the shock absorber 50. Therefore, the mounting tower 20 can be configured as a side-opening type, or the mounting tower 20 can be shell-shaped with an internal cavity to accommodate the shock absorber 50 and other suspension components connected to the upper swing arm 40 of the suspension.
[0074] like Figure 1 As shown, the shock absorber mounting part 201 can be a mounting hole, a mounting base, or a component that can cooperate with the shock absorber 50 to install the shock absorber 50, and this component can connect the shock absorber 50 to the mounting tower 20. The shock absorber mounting part 201 can be located at the upper, middle, or lower part of the mounting tower 20, depending on the height of the mounting tower 20 and the height and structure of the shock absorber 50.
[0075] like Figure 1 As shown, the second suspension mounting part 202 can also be a mounting hole, a mounting seat, or a structure that can mate with the upper suspension arm 40 to install the upper suspension arm 40, within which the upper suspension arm 40 can be connected to the mounting tower 20. The second suspension mounting parts 202 are generally arranged in pairs. To ensure that the second suspension mounting parts 202 can withstand the load transmitted by the upper suspension arm 40 without damage or failure, the second suspension mounting parts 202 are generally located at a position on the mounting tower 20 where strength or thickness is relatively high.
[0076] The first suspension mounting part 101 is mounted on the longitudinal beam 10. The first suspension mounting part 101 can be installed in pairs or individually, as long as it corresponds to the number of lower control arms 30 of the chassis design. The first suspension mounting part 101 can be located on the upper part, lower part, or side of the longitudinal beam 10. It should be noted that after the lower control arm 30 is mounted on the first suspension mounting part 101 and the upper control arm 40 is mounted on the second suspension mounting part 202, it is necessary to ensure that the upper control arm 40 and the lower control arm 30 face the same side of the longitudinal beam 10.
[0077] By adopting the above-described scheme, the first suspension mounting part 101, the second suspension mounting part 202, and the shock absorber mounting part 201 are all integrated onto the longitudinal beam 10 and integrally formed directly or indirectly with the longitudinal beam 10. This makes the structure of the longitudinal beam assembly simpler and more compact. Compared with the method in related technologies where the mounting parts are welded to the longitudinal beam 10, the longitudinal beam assembly in this embodiment has a simpler manufacturing process, shorter manufacturing time, and lower manufacturing cost. Furthermore, in the longitudinal beam assembly manufactured by integral forming, there are no welding errors in the first suspension mounting part 101, the second suspension mounting part 202, and the shock absorber mounting part 201, and their positions are more precise, reducing the installation difficulty of the subsequent lower suspension arm 30, upper suspension arm 40, and shock absorber 50, and improving installation efficiency. In addition, due to the reduction of welding points and welds in the longitudinal beam assembly, the structural safety and reliability of the vehicle chassis are also improved.
[0078] like Figure 1 and Figure 2 As shown, in some embodiments, the mounting tower 20 includes a top wall 203 and two first support members 204. The shock absorber mounting part 201 is provided on the top wall 203, and the two first support members 204 are respectively provided on both sides of the top wall 203 and connect the top wall 203 and the longitudinal beam 10.
[0079] Since the first support member 204 is used to connect the top wall 203 and the longitudinal beam 10, the distance between the top wall 203 and the longitudinal beam 10 is relatively far compared to the first support member 204. The top wall 203 can be flat, square or other irregular structure. In order to improve the strength of the top wall 203, the top wall 203 can be made thicker, or a reinforcing part can be made on the top wall 203, such as thickening a part of the top wall 203 locally, or setting an integrally formed reinforcing rib on the top wall 203, thereby improving the strength of the top wall 203.
[0080] The first support member 204 can be disposed on both sides of the top wall 203 along the length direction of the longitudinal beam 10, or on both sides of the longitudinal beam 10 along the width direction; this embodiment does not limit this. The cross-sectional shape of the first support member 204 perpendicular to its own length direction can be rectangular, triangular, or circular, etc. Furthermore, the cross-sectional shape of the first support member 204 perpendicular to its own length direction can be constant or variable. By connecting the top wall 203 and the longitudinal beam 10 only from both sides of the top wall 203 through the first support member 204, a certain space is provided between the lower middle part of the top wall 203 and the longitudinal beam 10. When the shock absorber 50 is installed on the top wall 203, at least a portion of the shock absorber 50 can be located within this space.
[0081] In some embodiments, the shock absorber mounting portion 201 may be a connecting hole for a bolt to pass through and be threaded to one end of the shock absorber 50. Of course, the shock absorber mounting portion 201 may also be other structures, as long as it can connect the shock absorber 50 to the top wall 203.
[0082] By adopting the above scheme, two first support members 204 are used to connect the top wall 203 from both sides of the top wall 203, making the connection between the top wall 203 and the longitudinal beam 10 more stable. This allows the top wall 203 to withstand the loads transmitted by the shock absorber 50 and the upper control arm 40 of the suspension during vehicle use, and also saves manufacturing materials, further reducing the overall weight of the longitudinal beam assembly.
[0083] Since the loads borne by the shock absorber 50 and the upper control arm 40 of the suspension need to be transferred to the longitudinal beam 10 through the first support member 204, in some embodiments, in order to enhance the strength of the first support member 204, the first support member 204 is provided with a protruding reinforcing ridge or reinforcing groove along the length direction, so that the first support member 204 has greater tensile and bending strength, so as to prevent the first support member 204 from deforming due to bearing a large load during vehicle operation.
[0084] like Figure 1 and Figure 2 As shown, in some embodiments, the two first support members 204 gradually move away from each other in the direction from the top wall 203 to the longitudinal beam 10, so that the two first support members 204 and the longitudinal beam 10 form a triangular structure.
[0085] By adopting the above scheme, a triangular structure is formed between the two first support members 204 and the longitudinal beam 10. The triangular structure has higher stability, which allows the mounting tower 20 to withstand greater loads without deformation during use. In addition, this arrangement also makes the space between the two first support members 204 larger, which facilitates the movement of suspension components such as the shock absorber 50 and the upper swing arm 40 within this space.
[0086] like Figure 1 As shown, in some embodiments, two suspension mounts 205 protrude downward from the top wall 203, and the second suspension mount 202 is disposed between the suspension mount 205 and the first support member 204.
[0087] The suspension mounting base 205 and the first support member 204 together define the position of the second suspension mounting part 202, so that when the upper control arm 40 is installed on the suspension mounting part, it can be connected to the first support member 204, the suspension mounting base 205, or both. This provides more installation possibilities and more load attachment points for the upper control arm 40, and improves the stability of the installation structure of the upper control arm 40.
[0088] The suspension mounting seat 205 is a protruding part of the lower surface of the top wall 203. In order to increase the load capacity of the suspension mounting seat 205, in some embodiments, the horizontal cross-section of the suspension mounting seat 205 can be gradually increased from bottom to top. That is, the thickness or width of the suspension mounting seat 205 gradually increases from away from the top wall 203 to close to the top wall 203. This arrangement makes the contact area between the suspension mounting seat 205 and the top wall 203 larger, thus making the connection between them more secure. When the load force borne by the upper control arm 40 of the suspension is transmitted to the top wall 203 through the suspension mounting seat 205, the suspension mounting seat 205 is less likely to break due to the large load.
[0089] like Figure 3 As shown, in some embodiments, the second suspension mounting portion 202 includes two upper suspension arm mounting points 2051, each upper suspension arm mounting point 2051 being disposed on a suspension mounting seat 205 and a first support member 204.
[0090] The upper control arm mounting point 2051 can be understood as the mounting position of the upper control arm 40. Each of the two upper control arm mounting points 2051 can mount one upper control arm 40.
[0091] Each upper control arm mounting point 2051 is set on a suspension mounting seat 205 and a first support member 204. That is, part of each upper control arm mounting point 2051 is set on the suspension mounting seat 205 and the other part is set on the first support member 204. The suspension mounting seats 205 and first support members 204 where two different upper control arm mounting points 2051 are located are different suspension mounting seats 205 and first support members 204.
[0092] By adopting the above scheme, each upper control arm 40 is connected to the first support member 204 and the suspension mounting seat 205 during installation, making the upper control arm 40 more securely installed. The load borne by the upper control arm 40 during vehicle use is transferred to the two upper control arm mounting points 2051, and then through these two mounting points 2051 to the suspension mounting seat 205 and the first support member 204. Since the suspension mounting seat 205 and the first support member 204 are directly or indirectly integrally formed with the longitudinal beam 10, both the suspension mounting seat 205 and the first support member 204 can withstand greater forces without breaking or being damaged. Therefore, the upper control arm 40 can withstand greater load forces.
[0093] like Figure 1 and Figure 2As shown, in some embodiments, the mounting tower 20 further includes two second support members 206, which are disposed between the top wall 203 and the longitudinal beam 10, and are installed between two first support members 204.
[0094] The second support member 206 has the same or similar function as the first support member 204, both serving to provide support and connection between the top wall 203 and the longitudinal beam 10, thereby transferring the force from the vehicle body to the top wall 203 to the longitudinal beam 10. Since the two second support members 206 are installed between the two first support members 204, the two second support members 206 bear more of the longitudinal force from the top wall 203 to the longitudinal beam 10, while the two first support members 204 can withstand a larger lateral force. The second support member 206 can be of any shape. Furthermore, the shapes of the second support member 206 and the first support member 204 can be the same or different; this embodiment does not limit this.
[0095] Two second support members 206 and two first support members 204 are supported together between the top wall 203 and the longitudinal beam 10, making the structure of the mounting tower 20 more stable and less prone to overturning after being subjected to impacts from the shock absorber 50 and the upper swing arm 40 of the suspension.
[0096] In some embodiments, the suspension mount 205 is connected to the second support member 206.
[0097] The suspension mounting base 205 and the second support member 206 can be integrally set or connected by mechanical components, such as bolt connection, pin connection, etc.
[0098] The connection between the suspension mounting base 205 and the second support member 206 establishes a mechanical connection between them. During vehicle use, the second support member 206 and the suspension mounting base 205 can jointly bear the force from the upper control arm mounting point 2051 on the suspension mounting base 205, thereby enhancing the structural strength and reliability of the suspension mounting part.
[0099] like Figure 3 As shown, in some embodiments, the first support member 204 is provided with a reinforcing part 207, and the second suspension mounting part 202 is disposed between the suspension mounting seat 205 and the reinforcing part 207.
[0100] By adopting the above solution, the cross-sectional dimensions of the first support member 204 at the location of the reinforcing part 207 are increased, and thus the strength of the first support member 204 is also increased. This makes it possible for the second suspension mounting part 202 to withstand a larger load force after the upper control arm 40 is installed on the second suspension mounting part 202, and the upper control arm mounting point 2051 on the first support member 204 is not easily damaged.
[0101] like Figure 4 As shown, in some embodiments, the mounting tower 20 further includes a reinforcing structure 208, which is "X" shaped and has four connecting ends 2081, two of which are connected to the top wall 203 and the other two are connected to the longitudinal beam 10.
[0102] The reinforcing structure 208 can be an integrally formed "X" shape or an assembled "X" shape. The reinforcing structure 208 is made of metal materials with high strength and hardness, such as steel or aluminum alloy. The plane on which the reinforcing structure 208 is located can be parallel to the length direction of the longitudinal beam 10 or have a certain angle with the length direction of the longitudinal beam 10. This application embodiment does not limit either of these.
[0103] The reinforcing structure 208 is supported between the top wall 203 and the longitudinal beam 10. The special shape of the reinforcing structure 208 forms a triangular structure between the reinforcing structure 208 and the top wall 203, and also forms a triangular structure between the reinforcing structure 208 and the longitudinal beam 10. The load-bearing capacity of the mounting tower 20 for longitudinal loads is enhanced, and its load-bearing capacity for lateral torsional forces is also enhanced, making the entire structure of the mounting tower 20 more stable.
[0104] like Figure 4 As shown, in some embodiments, the connecting end 2081 connected to the top wall 203 is connected at the intersection of the top wall 203 and the first support member 204 or the second support member 206, and the two connecting ends 2081 connected to the longitudinal beam 10 are connected at the intersection of the longitudinal beam 10 and the first support member 204 or the second support member 206.
[0105] By adopting the above solution, the strength is often higher at the intersection of the two components. Therefore, in this embodiment, by setting the connection position of the reinforcing structure 208, two of the connection ends 2081 of the reinforcing structure 208 are connected to the higher strength position on the top wall 203, and the other two connection ends 2081 are connected to the higher strength position on the longitudinal beam 10. That is, the higher strength position on the top wall 203 and the higher strength position on the longitudinal beam 10 can directly transmit force, thereby enabling the mounting tower 20 to withstand a greater load and maintain structural stability.
[0106] In some embodiments, the first support member 204 and / or the second support member 206 are integrally formed with the top wall 203.
[0107] The above technical solution may be that the first support member 204 is integrally formed with the top wall 203, the second support member 206 is integrally formed with the top wall 203, or both the first support member 204 and the second support member 206 are integrally formed with the top wall 203.
[0108] By adopting the above solution, the installation tower 20 has higher integration and eliminates the need for additional connection between the top wall 203 and the first support member 204 or the second support member 206. The manufacturing process of the installation tower 20 is simplified and the manufacturing precision is also higher.
[0109] like Figure 5 As shown, in some embodiments, the longitudinal beam 10 is also provided with a stabilizer bar mounting seat 102 for mounting a transverse stabilizer bar 60.
[0110] During installation, the stabilizer bar can be directly installed via the stabilizer bar mounting bracket 102 mounted on the longitudinal beam 10, eliminating the need for additional components to connect it separately to the stabilizer bar 60 and the longitudinal beam assembly, thus simplifying the installation process. Furthermore, by mounting the stabilizer bar mounting bracket 102 on the longitudinal beam 10, which is integrally formed, the positional accuracy of the stabilizer bar mounting bracket 102 is higher, facilitating rapid installation of the stabilizer bar and the longitudinal beam 10.
[0111] like Figure 6 As shown, in some embodiments, the longitudinal beam 10 is also provided with a motor mounting base 103 for mounting a drive motor.
[0112] The motor mounting base 103 has a surface that mates with at least one side of the motor, and the surface is provided with a hole for connecting the motor, through which bolts are passed to connect the drive motor to the motor mounting base 103.
[0113] By adopting the above scheme, the drive motor is mounted on the longitudinal beam 10 via the motor mounting bracket 103. Since the longitudinal beam 10 is closer to the drive wheels of the vehicle, the power transmission efficiency of the drive motor is higher. In addition, because the distance between the drive motor and the wheels of the vehicle is closer, the mechanical transmission components between the drive motor and the wheels are reduced, which simplifies the structure of the vehicle's drive system and makes the vehicle lighter.
[0114] like Figure 7 As shown, according to another aspect of the embodiments of this application, an automobile chassis is provided, the automobile chassis including a drive unit 100 and a battery compartment, the drive unit 100 being used to provide driving force for the vehicle; the battery compartment including a battery compartment frame 90 being used to house a battery, the battery being used to provide power to the drive unit 100; the longitudinal beam assembly being detachably connected to the battery compartment frame 90.
[0115] The drive device 100 can be an electric motor, drive motor, etc. The drive device 100 can be connected to the longitudinal beam, for example, the drive device 100 is connected to the motor mounting base 103 on the longitudinal beam 10.
[0116] The battery compartment frame 90 can be a square frame or other polygonal frame, and may include multiple transverse and longitudinal structural members. These members form a space to accommodate the battery. The frame structure reduces the weight of the battery compartment and facilitates battery heat dissipation. The battery can be in the form of multiple individual battery cells or multiple battery modules. Multiple intermediate transverse and / or intermediate longitudinal members can also be arranged inside the battery compartment frame 90 to form multiple compartments. The battery is mounted and fixed to the battery compartment frame 90. The battery provides power to the drive unit 100, enabling the drive unit 100 to provide driving force for the vehicle. This driving force can be used for the vehicle's starting, navigation, and operational power needs.
[0117] By adopting the above solution, both the drive unit 100 and the battery compartment are located in the vehicle chassis. When the battery is installed in the battery compartment frame 90, it can supply power to the drive unit 100 at close range, providing power to the drive unit 100 efficiently.
[0118] The battery compartment frame 90 is directly connected to the longitudinal beam assembly, eliminating the need for the crossbeams and longitudinal beams in the original chassis cab area. This significantly reduces the number of vehicle parts, improves the space utilization of the chassis, and allows the battery compartment to carry more batteries, further enhancing the vehicle's range performance.
[0119] In some embodiments, the battery is mounted on a transverse structural member of the battery compartment frame 90 and is detachably connected to the transverse structural member by means of bolts or the like.
[0120] like Figure 7 As shown, in some embodiments, the drive unit 100 is mounted on the longitudinal beam assembly.
[0121] By adopting the above scheme, the battery is located inside the battery compartment frame 90, which is mounted on the longitudinal beam assembly, and the drive unit 100 is also mounted on the longitudinal beam assembly. Therefore, the battery and the drive unit 100 can maintain a relatively fixed positional relationship, thereby stably providing power to the drive unit 100.
[0122] In some embodiments, the drive device is a motor, which is directly mounted on the motor mounting base 103 of the longitudinal beam 10 of the longitudinal beam assembly.
[0123] like Figure 7 As shown, in some embodiments, the vehicle chassis includes two longitudinal beam assemblies. The longitudinal beams 10 in the two longitudinal beam assemblies are arranged parallel to each other at the bottom of the vehicle body along the length of the vehicle body. The two longitudinal beams 10 are connected by a crossbeam 70. There may be one or more crossbeams 70. The crossbeams 70 can also be made of steel or aluminum alloy with excellent rigidity and strength. The crossbeams 70 and the longitudinal beams 10 can be fixed by welding or bolting.
[0124] The crossbeam 70 connects the two longitudinal beam assemblies into a whole. When the car turns, or when the load on both sides of the car is uneven, or when the car is subjected to an impact force from the wheel on one side, the two longitudinal beam assemblies will be subjected to different forces. The crossbeam 70 can balance the forces on the two longitudinal beam assemblies during this process, so that the two longitudinal beam assemblies are subjected to forces synchronously, thereby ensuring the torsional rigidity of the car chassis. In addition, the crossbeam 70 can also be used to bear a certain longitudinal load and support the main components of the car.
[0125] like Figure 7 As shown, in some embodiments, the vehicle also includes a crash beam 80, which is connected to the longitudinal beams 10 of the two longitudinal beam assemblies respectively. The connection method can be welding or bolting. When the vehicle is involved in a frontal collision, the crash beam 80 first bears the impact force and absorbs part of the collision energy. The remaining collision energy is transmitted to the longitudinal beams 10 and the vehicle body. Therefore, the crash beam 80 has the functions of absorbing collision energy, reducing the damage of the impact force to the longitudinal beams of the vehicle body, protecting the main structure of the vehicle body, and improving the safety performance of the vehicle.
[0126] like Figure 7 As shown, in some embodiments, the battery compartment frame 90 can be connected to the end of the longitudinal beam 10, the battery compartment frame 90 can also be connected between the two longitudinal beams 10 of the two longitudinal beam assemblies, or the battery compartment frame 90 can also be fixed to the crossbeam 70. Figure 7 The diagram only shows the connection between the battery compartment frame 90 and the ends of the two longitudinal beams 10. Those skilled in the art can infer or reasonably imagine other connection methods between the battery compartment frame 90 and the longitudinal beam assembly based on this diagram. The embodiments of this application will not be described in detail here.
[0127] In summary, the embodiments of this application integrate the first suspension mounting part 101, the second suspension mounting part 202, and the shock absorber mounting part 201 onto the longitudinal beam 10, and directly or indirectly integrally form them with the longitudinal beam 10. This makes the structure of the longitudinal beam assembly simpler and more compact. Compared with the method in related technologies where each mounting part is welded to the longitudinal beam 10, the longitudinal beam assembly in the embodiments of this application has a simpler manufacturing process, shorter manufacturing time, and lower manufacturing cost. Furthermore, in the longitudinal beam assembly manufactured by integral forming, there are no welding errors in the first suspension mounting part 101, the second suspension mounting part 202, and the shock absorber mounting part 201, and their positions are more precise. This reduces the installation difficulty of the subsequent lower suspension arm 30, upper suspension arm 40, and shock absorber 50, and improves installation efficiency.
[0128] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.
[0129] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A longitudinal beam assembly, characterized in that, include: The integrally formed longitudinal beam (10) is provided with a first suspension mounting part (101), which is used to install the lower control arm (30) of the suspension; The mounting tower (20) is provided with a shock absorber mounting part (201) and a second suspension mounting part (202). The shock absorber mounting part (201) is used to install a shock absorber (50); the second suspension mounting part (202) is used to install a suspension upper swing arm (40). The mounting tower (20) is mounted on the longitudinal beam (10). The mounting tower (20) includes a top wall (203), two first support members (204) and two second support members (206). The shock absorber mounting part (201) is located on the top wall (203). The two first support members (204) are respectively located on both sides of the top wall (203) and connect the top wall (203) and the longitudinal beam (10). The two second support members (206) are located between the top wall (203) and the longitudinal beam (10), and the two second support members (206) are installed between the two first support members (204). The mounting tower (20) further includes a reinforcing structure (208) located between two first support members (204). The reinforcing structure (208) is "X" shaped and has four connecting ends (2081). Two of the connecting ends (2081) are connected to the top wall (203), and the other two connecting ends (2081) are connected to the longitudinal beam (10). The connecting ends (2081) connected to the top wall (203) are connected at the intersection of the top wall (203) and the second support member (206), and the two connecting ends (2081) connected to the longitudinal beam (10) are connected at the intersection of the longitudinal beam (10) and the second support member (206).
2. The longitudinal beam assembly according to claim 1, characterized in that, In the direction from the top wall (203) to the longitudinal beam (10), the two first support members (204) gradually move away from each other so that the two first support members (204) and the longitudinal beam (10) form a triangular structure.
3. The longitudinal beam assembly according to claim 1, characterized in that, Two suspension mounts (205) protrude downward from the top wall (203), and the second suspension mount (202) is disposed between the suspension mount (205) and the first support member (204).
4. The longitudinal beam assembly according to claim 3, characterized in that, The second suspension mounting part (202) includes two upper suspension arm mounting points (2051), each of the upper suspension arm mounting points (2051) being disposed on a suspension mounting seat (205) and a first support member (204).
5. The longitudinal beam assembly according to claim 4, characterized in that, The suspension mounting base (205) is connected to the second support member (206).
6. The longitudinal beam assembly according to claim 4, characterized in that, The first support member (204) is provided with a reinforcing part (207), and the second suspension mounting part (202) is disposed between the suspension mounting seat (205) and the reinforcing part (207).
7. The longitudinal beam assembly according to claim 1, characterized in that, The first support member (204) and / or the second support member (206) are integrally formed with the top wall (203).
8. The longitudinal beam assembly according to any one of claims 1-7, characterized in that, The longitudinal beam (10) is also provided with a stabilizer bar mounting seat (102) for mounting a transverse stabilizer bar (60).
9. The longitudinal beam assembly according to any one of claims 1-7, characterized in that, The longitudinal beam (10) is also provided with a motor mounting base (103) for mounting a drive motor.
10. An automobile chassis, characterized in that, include: The longitudinal beam assembly according to any one of claims 1-9; A drive unit (100) is used to provide driving force for the vehicle; The battery compartment includes a battery compartment frame (90) for housing a battery for providing power to the drive unit (100); The longitudinal beam assembly is detachably connected to the battery compartment frame (90).
11. The automobile chassis according to claim 10, characterized in that, The drive unit (100) is mounted on the longitudinal beam assembly.