Rear floor longitudinal beam assembly and vehicle

Abstract

This utility model discloses a rear floor longitudinal beam assembly and a vehicle, relating to the field of vehicle manufacturing technology. The rear floor longitudinal beam assembly includes: a rear floor longitudinal beam with a profile cavity formed within it; a mounting bracket installed within the profile cavity, the mounting bracket forming a receiving cavity that is open at the bottom of the rear floor longitudinal beam; and a connecting sleeve installed within the receiving cavity, which is used to detachably connect to the rear subframe via a connector. The rear floor longitudinal beam assembly of this utility model, by providing a mounting bracket within the profile cavity and installing the connecting sleeve within the mounting bracket and connecting it to the rear subframe, achieves the connection between the rear floor longitudinal beam and the rear subframe, improving the vehicle's passive safety performance. Furthermore, by installing the mounting bracket within the profile cavity, the mounting bracket can form a reinforcing structure within the profile cavity, enhancing the structural strength of the rear floor longitudinal beam and improving its operational reliability.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a rear floor longitudinal beam assembly and a vehicle. Background Technology

[0002] The rear subframe is fixed to the rear floor longitudinal beam. The conventional rear subframe fixing structure consists of a nut fixing plate, a welded nut tube, and a rear subframe mounting support plate forming a reinforcing component, which is welded to the sheet metal of the rear floor longitudinal beam to bear various alternating loads generated during vehicle movement. However, due to the closed structural characteristics of profile-type rear floor longitudinal beams, it is impossible to weld reinforcing components inside the longitudinal beam, leaving room for improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rear floor longitudinal beam assembly, wherein a reinforcing structure can be formed inside the profile cavity to enhance the structural strength of the rear floor longitudinal beam and improve its operational reliability.

[0004] The rear floor longitudinal beam assembly according to an embodiment of the present utility model includes: a rear floor longitudinal beam, wherein a profile cavity is formed within the rear floor longitudinal beam; a mounting bracket, wherein the mounting bracket is installed within the profile cavity and forms a receiving cavity, the receiving cavity being open at the bottom of the rear floor longitudinal beam; and a connecting sleeve, wherein the connecting sleeve is installed within the receiving cavity and is used to be detachably connected to the rear subframe via a connector.

[0005] According to the rear floor longitudinal beam assembly of this utility model embodiment, by forming a profile cavity inside the rear floor longitudinal beam, the rear floor longitudinal beam can be made of profile tube beam, which can reduce the amount of material used and reduce weight while ensuring strength. Moreover, an installation bracket is provided in the profile cavity, and the connecting sleeve is installed in the installation bracket and connected to the rear subframe, which can realize the connection between the rear floor longitudinal beam and the rear subframe, enhance the overall rigidity of the vehicle body, and improve the passive safety performance of the vehicle. Furthermore, by installing the installation bracket in the profile cavity, the installation bracket can form a reinforcing structure inside the profile cavity, which enhances the structural strength of the rear floor longitudinal beam and improves the reliability of the rear floor longitudinal beam operation.

[0006] According to some embodiments of the present invention, the rear floor longitudinal beam assembly includes a longitudinal beam top plate and a longitudinal beam bottom plate for forming the profile cavity; wherein, the mounting bracket includes a bracket top plate and a bracket bottom plate, the bracket top plate being connected to the longitudinal beam top plate, and the bracket bottom plate being connected to the longitudinal beam bottom plate.

[0007] According to some embodiments of the present invention, the rear floor longitudinal beam assembly has a top mounting hole on the top plate of the longitudinal beam, and the bracket top plate extends into the top mounting hole and is fixedly connected to the top plate of the longitudinal beam; and / or, the bottom plate of the longitudinal beam has a bottom mounting hole, the receiving cavity communicates with the lower part of the rear floor longitudinal beam through the bottom mounting hole, and at least a portion of the bracket bottom plate extends into the bottom mounting hole.

[0008] According to some embodiments of the present utility model, the rear floor longitudinal beam assembly includes a base plate body and a bottom boss. The bottom boss protrudes downward from the bottom of the base plate body. The base plate body is attached to the upper surface of the longitudinal beam base plate. The bottom boss extends into the bottom mounting hole and is clearance-fitted with the inner wall of the bottom mounting hole.

[0009] According to some embodiments of the present invention, the rear floor longitudinal beam assembly further includes an intermediate main body section, the top plate of the bracket and the bottom plate of the bracket are respectively connected to the two ends of the intermediate main body section, and the rear floor longitudinal beam further includes a longitudinal beam intermediate plate located between the longitudinal beam top plate and the longitudinal beam bottom plate, with the intermediate main body section passing through the longitudinal beam intermediate plate.

[0010] According to some embodiments of the present invention, the rear floor longitudinal beam assembly includes an intermediate main section comprising an upper connecting section and a lower mounting section connected together. At least a portion of the outer diameter of the lower mounting section is larger than the outer diameter of the upper connecting section. The receiving cavity is formed in the lower mounting section and extends downward through the bracket base plate.

[0011] According to some embodiments of the present invention, the rear floor longitudinal beam assembly has at least one vertically extending reinforcing rib on the outer peripheral wall of the intermediate main body section.

[0012] According to some embodiments of the present invention, in the rear floor longitudinal beam assembly, the inner peripheral wall of the receiving cavity is provided with an internal thread section, and the outer peripheral wall of the connecting sleeve is provided with an external thread section, wherein the external thread section and the internal thread section are threadedly engaged.

[0013] According to some embodiments of the present invention, in the rear floor longitudinal beam assembly, the vertical length of the connecting sleeve is less than 2 / 3 of the vertical depth of the receiving cavity.

[0014] This utility model also proposes a vehicle.

[0015] The vehicle according to an embodiment of the present invention includes a rear subframe and a rear floor longitudinal beam assembly as described in any of the above embodiments.

[0016] The vehicle described above and the aforementioned rear floor longitudinal beam assembly have the same advantages over the prior art, which will not be elaborated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial sectional view of the rear floor longitudinal beam assembly according to an embodiment of the present utility model; Figure 2 This is an installation diagram of the mounting bracket and connecting sleeve according to an embodiment of the present utility model.

[0019] Figure label: Rear floor longitudinal beam assembly 100, Rear floor longitudinal beam 1, profile cavity 11, longitudinal beam top plate 12, top mounting hole 121, longitudinal beam bottom plate 13, bottom mounting hole 131, longitudinal beam middle plate 14, clearance hole 141. Mounting bracket 2, receiving cavity 21, bracket top plate 22, bracket bottom plate 23, bottom plate main body 231, bottom boss 232, middle main body section 24, upper connecting section 241, lower mounting section 242. Connecting sleeve 3. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0024] The following is for reference. Figures 1-2 The rear floor longitudinal beam assembly 100 according to an embodiment of the present utility model can form a reinforcing structure inside the profile cavity 11 to enhance the structural strength of the rear floor longitudinal beam 1 and improve the reliability of the operation of the rear floor longitudinal beam 1.

[0025] like Figures 1-2 As shown, a rear floor longitudinal beam assembly 100 according to an embodiment of the present invention includes: a rear floor longitudinal beam 1, a mounting bracket 2, and a connecting sleeve 3.

[0026] A profile cavity 11 is formed inside the rear floor longitudinal beam 1; a mounting bracket 2 is installed inside the profile cavity 11, and the mounting bracket 2 forms a receiving cavity 21, which is open at the bottom of the rear floor longitudinal beam 1; a connecting sleeve 3 is installed inside the receiving cavity 21, and the connecting sleeve 3 is used to detachably connect to the rear subframe via a connector.

[0027] In practice, the rear subframe is usually connected to the rear floor longitudinal beam 1 to enhance the overall rigidity of the vehicle body. As a key component for transmitting collision energy, the rear floor longitudinal beam 1, after being connected to the rear subframe, can form a force transmission channel along the width of the vehicle body, which can evenly distribute the rear-end collision or side impact force to the vehicle body frame and improve the passive safety performance of the vehicle.

[0028] The rear floor longitudinal beam 1 has a profile cavity 11, which means that the rear floor longitudinal beam 1 can be made of profile tube beam, so that the rear floor longitudinal beam 1 can form a cavity structure. The cavity structure can absorb collision energy through collapse, buffer the impact force and guide the collision energy to other parts of the vehicle body to protect the vehicle body structure and the safety of the occupants. Moreover, the profile tube beam can significantly improve the torsional resistance and load-bearing rigidity of the rear floor longitudinal beam 1 through the closed structural design. In addition, the use of standardized profiles can facilitate mass production, reduce welding processes and material waste, and allow for quick replacement of damaged sections during maintenance, thereby reducing overall costs.

[0029] Furthermore, the rear floor longitudinal beam 1 can be made of high-strength steel or aluminum alloy profiles. Compared with traditional solid beams, it can reduce the amount of material used and reduce the overall vehicle weight while ensuring strength, thus meeting the vehicle's lightweight requirements.

[0030] Furthermore, the mounting bracket 2 is installed inside the profile cavity 11, meaning the profile cavity 11 provides installation space for the mounting bracket 2. The mounting bracket 2 can then be placed inside the profile cavity 11 and connected to the rear floor longitudinal beam 1 to achieve installation and fixation of the mounting bracket 2. This allows the mounting bracket 2 to form a reinforcing structure inside the profile cavity 11, strengthening the structural strength of the rear floor longitudinal beam 1, dispersing stress, and preventing localized deformation. Simultaneously, the mounting bracket 2 has a receiving cavity 21, and the connecting sleeve 3 is installed inside the receiving cavity 21. The receiving cavity 21 provides an installation position for the connecting sleeve 3, allowing the connecting sleeve 3 to be placed inside the receiving cavity 21 and connected to the mounting bracket 2 to achieve installation and fixation of the connecting sleeve 3.

[0031] The connecting sleeve 3 is used to connect to the rear subframe. The connecting sleeve 3 can be connected to the mounting bracket 2 and the rear subframe respectively. The mounting bracket 2 is connected to the rear floor longitudinal beam 1. Thus, the rear floor longitudinal beam 1, the mounting bracket 2, the connecting sleeve 3 and the rear subframe can be connected in sequence. The connection between the rear floor longitudinal beam 1 and the rear subframe is achieved through the mounting bracket 2 and the connecting sleeve 3. Moreover, the rear subframe is usually located below the rear floor longitudinal beam 1. The receiving cavity 21 is opened at the bottom of the rear floor longitudinal beam 1, so that the receiving cavity 21 is open to the rear subframe. The connecting sleeve 3 located in the receiving cavity 21 is also set to face the rear subframe, so as to connect the rear subframe and the connecting sleeve 3, thereby achieving the connection between the rear subframe and the rear floor longitudinal beam 1.

[0032] The connecting sleeve 3 is detachably connected to the rear subframe via a connector. The connector can be inserted through both the rear subframe and the connecting sleeve 3 to connect the rear subframe to the connecting sleeve 3. This allows the rear subframe and the connecting sleeve 3 to be detachable, which in turn allows the rear subframe to be detachable from the rear floor longitudinal beam 1. This facilitates the connection or separation of the rear subframe and the rear floor longitudinal beam 1, enabling the replacement of damaged parts when the rear floor longitudinal beam 1 and / or the rear subframe fail, thereby reducing subsequent maintenance costs.

[0033] It should be noted that in practice, the connecting sleeve 3 can be constructed as a threaded sleeve, and the connecting part can be a bolt, so that the threaded sleeve can be connected to the rear subframe through a threaded connection. The threaded connection method is simple, reliable and easy to operate.

[0034] According to the rear floor longitudinal beam assembly 100 of this utility model embodiment, by forming a profile cavity 11 in the rear floor longitudinal beam 1, the rear floor longitudinal beam 1 can be made of profile tube beam, which can reduce the amount of material used and reduce the weight while ensuring strength. In addition, an installation bracket 2 is provided in the profile cavity 11, and the connecting sleeve 3 is installed in the installation bracket 2 and connected to the rear subframe, which can realize the connection between the rear floor longitudinal beam 1 and the rear subframe, which can enhance the overall rigidity of the vehicle body and improve the passive safety performance of the vehicle. Moreover, by installing the installation bracket 2 in the profile cavity 11, the installation bracket 2 can form a reinforcing structure inside the profile cavity 11, which enhances the structural strength of the rear floor longitudinal beam 1 and improves the reliability of the operation of the rear floor longitudinal beam 1.

[0035] In some embodiments, the rear floor longitudinal beam 1 includes a longitudinal beam top plate 12 and a longitudinal beam bottom plate 13 for forming a profile cavity 11; wherein, the mounting bracket 2 includes a bracket top plate 22 and a bracket bottom plate 23, the bracket top plate 22 being connected to the longitudinal beam top plate 12, and the bracket bottom plate 23 being connected to the longitudinal beam bottom plate 13.

[0036] Specifically, the rear floor longitudinal beam 1 includes a top plate 12 and a bottom plate 13, meaning that both the top plate 12 and the bottom plate 13 can serve as part of the rear floor longitudinal beam 1 to transmit and absorb collision energy. The top plate 12 and the bottom plate 13 are spaced apart in the vertical direction, thus defining a profile cavity 11 between them. The mounting bracket 2 includes a bracket top plate 22 and a bracket bottom plate 23, which connect the bracket top plate 22 to the top plate 1 of the longitudinal beam. Connecting the bracket base plate 23 to the longitudinal beam base plate 13 allows the bracket top plate 22 and bracket base plate 23 to be spaced apart vertically, so that the bracket top plate 22 and bracket base plate 23 can approach the longitudinal beam top plate 12 and longitudinal beam base plate 13 respectively. This facilitates the connection of the bracket top plate 22 and bracket base plate 23 to the longitudinal beam top plate 12 and longitudinal beam base plate 13 respectively, allowing the mounting bracket 2 and the rear floor longitudinal beam 1 to be connected at two locations simultaneously, which improves the reliability and stability of the connection between the two.

[0037] By connecting the top plate 22 and bottom plate 23 of the bracket to the top plate 12 and bottom plate 13 of the longitudinal beam, respectively, the mounting bracket 2 can be reliably installed in the profile cavity 11. This allows the mounting bracket 2 to form a reinforcing structure within the profile cavity 11, reliably strengthening the structural strength of the rear floor longitudinal beam 1. Furthermore, the mounting bracket 2 can be welded to the rear floor longitudinal beam 1 to improve the connection strength between them, thereby enhancing the reliability of connecting the rear subframe to the rear floor longitudinal beam 1 via the mounting bracket 2. It should be noted that the connection method between the top plate 22 and the top plate 12 of the longitudinal beam, and the connection method between the bottom plate 23 and the bottom plate 13 of the longitudinal beam, are not limited to those described in this embodiment and can be flexibly selected according to actual conditions.

[0038] In some embodiments, the top plate 12 of the longitudinal beam is provided with a top mounting hole 121, and the top plate 22 of the bracket extends into the top mounting hole 121 and is fixedly connected to the top plate 12 of the longitudinal beam; and / or, the bottom plate 13 of the longitudinal beam is provided with a bottom mounting hole 131, the receiving cavity 21 communicates with the lower part of the rear floor longitudinal beam 1 through the bottom mounting hole 131, and at least a portion of the bottom plate 23 extends into the bottom mounting hole 131.

[0039] Specifically, the top plate 12 of the longitudinal beam is connected to the top plate 22 of the bracket. A top mounting hole 121 is provided on the top plate 12 of the longitudinal beam. The top plate 22 of the bracket extends into the top mounting hole 121 and is fixedly connected to the top plate 12 of the longitudinal beam. The top mounting hole 121 can penetrate the top plate 12 of the longitudinal beam, and the top plate 22 of the bracket can extend from the inside of the profile cavity 11 into the top mounting hole 121, so that the top plate 22 of the bracket can cooperate with the top mounting hole 121. In this way, the top plate 22 of the bracket and the top plate 12 of the longitudinal beam can be fixedly connected at the top mounting hole 121 to realize the connection between the mounting bracket 2 and the rear floor longitudinal beam 1. The top plate 22 of the bracket and the top plate 12 of the longitudinal beam can also be welded together to improve the connection strength and reliability between the two, thereby improving the reliability of their respective operations.

[0040] For example, such as Figure 1 As shown, a portion of the bracket top plate 22 can extend out of the top mounting hole 121 to facilitate connection between the bracket top plate 22 and the longitudinal beam top plate 12.

[0041] Meanwhile, the longitudinal beam base plate 13 is connected to the bracket base plate 23. A bottom mounting hole 131 is provided on the longitudinal beam base plate 13. At least a part of the bracket base plate 23 extends into the bottom mounting hole 131, so that the bottom mounting hole 131 can penetrate the longitudinal beam base plate 13. Thus, part or all of the bracket base plate 23 can extend from the inside of the profile cavity 11 into the bottom mounting hole 131. The mounting bracket 2 has a receiving cavity 21 inside. The receiving cavity 21 is configured to open towards the bottom of the rear floor longitudinal beam 1. Thus, when at least a part of the bracket base plate 23 is extended into the bottom mounting hole 131, the receiving cavity 21 can communicate with the external space through the bottom mounting hole 131, that is, communicate with the bottom of the rear floor longitudinal beam 1. Thus, it is convenient to connect the connecting sleeve 3 in the receiving cavity 21 to the rear subframe, so as to realize the connection between the rear subframe and the rear floor longitudinal beam 1.

[0042] In some embodiments, the bracket base plate 23 includes a base plate body 231 and a bottom boss 232. The bottom boss 232 protrudes downward from the bottom of the base plate body 231. The base plate body 231 is attached to the upper surface of the longitudinal beam base plate 13. The bottom boss 232 extends into the bottom mounting hole 131 and is in clearance fit with the inner wall of the bottom mounting hole 131.

[0043] Specifically, the support base plate 23 is connected to the longitudinal beam base plate 13. The support base plate 23 includes a base plate body 231 and a bottom boss 232. The bottom boss 232 protrudes downward from the bottom of the base plate body 231, thus aligning the base plate body 231 and the bottom boss 232 vertically. The bottom boss 232 is connected to the lower part of the base plate body 231, making the base plate body 231 and the bottom boss 232 a single integrated structure, improving overall structural strength and operational reliability. Simultaneously, the base plate body 231 is attached to the upper surface of the longitudinal beam base plate 13, allowing the base plate to... The outer diameter of the main body 231 is larger than the outer diameter of the bottom boss 232. This allows the bottom boss 232 to be located inside the bottom mounting hole 131 when at least a portion of the bracket base plate 23 is extended into the bottom mounting hole 131. The base plate main body 231 can press against the upper surface of the longitudinal beam base plate 13 to achieve the installation of the mounting bracket 2 in the profile cavity 11. The upper surface of the longitudinal beam base plate 13 can be used to limit the base plate main body 231 to prevent it from coming out of the bottom mounting hole 131, thus achieving reliable installation of the mounting bracket 2 in the profile cavity 11.

[0044] In practice, the base plate body 231 and the bottom boss 232 can be fixedly connected or directly constructed as one unit to effectively improve the structural strength of the support base plate 23.

[0045] Furthermore, when the bottom boss 232 is extended into the bottom mounting hole 131, the bottom boss 232 and the inner wall of the bottom mounting hole 131 are in clearance fit, that is, there is a certain gap between the bottom boss 232 and the inner wall of the bottom mounting hole 131, which can provide a certain position adjustment space for the mounting bracket 2, allowing the mounting bracket 2 to be finely adjusted in the profile cavity 11, thereby reducing the connection difficulty between the rear subframe and the connecting sleeve 3, and thus reducing the assembly difficulty between the rear subframe and the rear floor longitudinal beam 1.

[0046] In some embodiments, the mounting bracket 2 further includes an intermediate main body section 24, with the bracket top plate 22 and the bracket bottom plate 23 respectively connected to the two ends of the intermediate main body section 24. The rear floor longitudinal beam 1 also includes a longitudinal beam intermediate plate 14 located between the longitudinal beam top plate 12 and the longitudinal beam bottom plate 13, with the intermediate main body section 24 passing through the longitudinal beam intermediate plate 14.

[0047] That is to say, the mounting bracket 2 includes a bracket top plate 22, a bracket bottom plate 23 and an intermediate main body section 24. By connecting the bracket top plate 22 and the bracket bottom plate 23 to both ends of the intermediate main body section 24 respectively, the bracket top plate 22 and the bracket bottom plate 23 can be connected to the intermediate main body section 24 respectively, making the mounting bracket 2 a whole structure, which can improve the overall structural strength and working reliability of the mounting bracket 2. And by connecting the bracket top plate 22 and the bracket bottom plate 23 to both ends of the intermediate main body section 24 respectively, the bracket top plate 22 and the bracket bottom plate 23 can be connected to different positions on the intermediate main body section 24, avoiding interference between the bracket top plate 22 and the bracket bottom plate 23, improving the connection reliability between each of them and the intermediate main body section 24. At the same time, the bracket top plate 22 and the bracket bottom plate 23 can be moved closer to the longitudinal beam top plate 12 and the longitudinal beam bottom plate 13 respectively, so as to facilitate connecting the bracket top plate 22 and the bracket bottom plate 23 to the longitudinal beam top plate 12 and the longitudinal beam bottom plate 13 respectively.

[0048] Among them, connecting the intermediate main body section 24 between the bracket top plate 22 and the bracket bottom plate 23 enables the intermediate main body section 24 to support between the bracket top plate 22 and the bracket bottom plate 23, making the mounting bracket 2 form a strengthening structure inside the profile cavity 11, ensuring the reliability of the mounting bracket 2 to enhance the structural strength of the rear floor longitudinal beam 1.

[0049] Moreover, the rear floor longitudinal beam 1 includes a longitudinal beam top plate 12, a longitudinal beam bottom plate 13 and a longitudinal beam intermediate plate 14. The longitudinal beam intermediate plate 14 is located between the longitudinal beam top plate 12 and the longitudinal beam bottom plate 13, that is, the longitudinal beam intermediate plate 14 is located inside the profile cavity 11, enabling the rear floor longitudinal beam 1 to form a "day-shaped" cavity structure to absorb collision energy by using the cavity structure, protecting the vehicle body structure and the safety of the occupants. By passing the intermediate main body section 24 through the longitudinal beam intermediate plate 14, an avoidance hole 141 can be provided on the longitudinal beam intermediate plate 14, making the avoidance hole 141 penetrate through the longitudinal beam intermediate plate 14, and then the intermediate main body section 24 can pass through the avoidance hole 141, that is, pass through the longitudinal beam intermediate plate 14 to achieve the installation of the mounting bracket 2 inside the profile cavity 11.

[0050] Among them, it should be noted that the inner diameter of the avoidance hole 141 can be constructed to be larger than the maximum outer diameter of the mounting bracket 2, so as to facilitate inserting the mounting bracket 2 into the profile cavity 11 from the position of the top mounting hole 121 until the bottom boss 232 extends into the bottom mounting hole 131, and the bottom plate main body 231 abuts against the upper surface of the longitudinal beam bottom plate 13. Then, welding the bracket top plate 22 and the longitudinal beam top plate 12 circumferentially along the bracket top plate 22 can achieve the reliable installation of the mounting bracket 2 inside the profile cavity 11.

[0051] In some embodiments, the intermediate main body segment 24 includes an upper connecting segment 241 and a lower mounting segment 242 connected together. At least a portion of the outer diameter of the lower mounting segment 242 is larger than the outer diameter of the upper connecting segment 241. A receiving cavity 21 is formed in the lower mounting segment 242 and extends downward through the bracket base plate 23.

[0052] Specifically, the intermediate main body section 24 is connected between the top plate 22 and the bottom plate 23 of the support. The intermediate main body section 24 includes an upper connecting section 241 and a lower mounting section 242. The upper connecting section 241 and the lower mounting section 242 can be distributed and connected in the vertical direction, so that the intermediate main body section 24 can be a whole structure, which improves the structural strength and operational reliability of the intermediate main body section 24. The upper connecting section 241 can be connected to the top plate 22 of the support, and the lower mounting section 242 can be connected to the bottom plate 23 of the support, so as to realize the separate connection of the intermediate main body section 24 to the top plate 22 and the bottom plate 23 of the support.

[0053] The mounting bracket 2 has a receiving cavity 21, and a connecting sleeve 3 for connecting the rear subframe is installed in the receiving cavity 21. The receiving cavity 21 is formed in the lower mounting section 242, so that the receiving cavity 21 is set close to the lower part of the mounting bracket 2. Thus, when the connecting sleeve 3 is set in the receiving cavity 21, the connecting sleeve 3 can be moved towards the rear subframe, so as to connect the connecting sleeve 3 to the rear subframe. The receiving cavity 21 passes through the bracket base plate 23, so that the receiving cavity 21 is open towards the lower part of the rear floor longitudinal beam 1 and communicates with the lower part of the rear floor longitudinal beam 1, so that the connector can be simultaneously inserted into the connecting sleeve 3 and the rear subframe, ensuring a reliable connection between the rear subframe and the connecting sleeve 3.

[0054] Furthermore, by constructing at least a portion of the outer diameter of the lower mounting section 242 to be larger than the outer diameter of the upper connecting section 241, the outer diameter of part or all of the lower mounting section 242 can be made larger, so as to form a receiving cavity 21 inside the lower mounting section 242, ensuring reliable installation of the connecting sleeve 3.

[0055] In such Figures 1-2 In the embodiment shown, the outer diameter of the middle main body section 24 is smaller than the outer diameter of the top plate 22 of the bracket and also smaller than the outer diameter of the bottom plate 23 of the bracket, so that the mounting bracket 2 is dumbbell-shaped as a whole.

[0056] In some embodiments, the outer peripheral wall of the intermediate main body segment 24 is provided with at least one vertically extending reinforcing rib.

[0057] Specifically, the reinforcing ribs are used to improve the local structural strength. By setting the reinforcing ribs on the outer peripheral wall of the middle main body section 24, the structural strength of the mounting bracket 2 can be strengthened on the outside of the middle main body section 24. This also avoids interference between the reinforcing ribs and the connecting sleeve 3, improving the reliability of their respective operations. The number of reinforcing ribs is at least one, that is, the number of reinforcing ribs can be one, two, three or more. Thus, the structural strength of the mounting bracket 2 can be reliably strengthened by at least one reinforcing rib. Moreover, by constructing the reinforcing ribs to extend vertically, that is, to construct the reinforcing ribs to extend along the length direction of the mounting bracket 2, the length of the reinforcing ribs can be increased, improving the reliability of strengthening the structural strength of the mounting bracket 2.

[0058] It should be noted that when the number of reinforcing ribs is at least two, the two reinforcing ribs can be evenly distributed around the circumference of the intermediate main body section 24 to avoid local stress concentration. Furthermore, placing the reinforcing ribs on the outer peripheral wall of the intermediate main body section 24 can also prevent a significant reduction in the structural strength of the intermediate main body section 24 due to the presence of the receiving cavity 21 within the intermediate main body section 24.

[0059] In some embodiments, the inner peripheral wall of the receiving cavity 21 is provided with an internal thread section, and the outer peripheral wall of the connecting sleeve 3 is provided with an external thread section, and the external thread section and the internal thread section are threadedly engaged.

[0060] Specifically, the connecting sleeve 3 is installed inside the receiving cavity 21, meaning that the outer peripheral wall of the connecting sleeve 3 can be connected and fitted with the inner peripheral wall of the receiving cavity 21. An internal thread section is provided on the inner peripheral wall of the receiving cavity 21, and an external thread end is provided on the outer peripheral wall of the connecting sleeve 3. The internal thread section and the external thread end are distributed accordingly, and the connecting sleeve 3 can be installed in the receiving cavity 21 through the threaded engagement between the external thread end and the internal thread section. Moreover, the threaded engagement allows the mounting bracket 2 and the connecting sleeve 3 to be detachably connected, which facilitates the connection or separation of the connecting sleeve 3 from the mounting bracket 2. This facilitates the installation or disassembly of the connecting sleeve 3, and also facilitates the quick replacement of the connecting sleeve 3 when it is damaged or fails, improving the convenience of operation and reducing subsequent maintenance costs.

[0061] In some embodiments, the vertical length of the connecting sleeve 3 is less than 2 / 3 of the vertical depth of the receiving cavity 21.

[0062] Specifically, the connecting sleeve 3 is installed inside the receiving cavity 21. The vertical length of the connecting sleeve 3 is designed to be less than 2 / 3 of the vertical depth of the receiving cavity 21. For example, the vertical length of the connecting sleeve 3 can be 1 / 3, 1 / 2, or 3 / 5 of the vertical length of the receiving cavity 21. This avoids the connecting sleeve 3 being too long or too short. When the length of the connecting sleeve 3 is too long, the connecting sleeve 3 will extend outside the receiving cavity 21, which may interfere with the rear subframe and is not conducive to the reliable connection between the connecting sleeve 3 and the rear subframe. When the length of the connecting sleeve 3 is too short, when the connecting sleeve 3 is connected to the rear subframe through the connector, the connection fit length between the connecting sleeve 3 and the connector will be too short, which may reduce the reliability of the connection between the rear subframe and the connecting sleeve 3.

[0063] Therefore, in practice, the vertical length of the connecting sleeve 3 can be reasonably designed to ensure a reliable connection between the connecting sleeve 3 and the connecting piece while preventing the connecting sleeve 3 from extending outside the receiving cavity 21, thereby ensuring a reliable connection between the rear subframe and the rear floor longitudinal beam 1.

[0064] Additionally, it should be noted that the mounting bracket 2 can be machined, which can help improve the dimensional accuracy and surface quality of the mounting bracket 2.

[0065] This utility model also proposes a vehicle.

[0066] The vehicle according to an embodiment of the present invention includes a rear subframe and a rear floor longitudinal beam assembly 100 of any of the above embodiments. By forming a profile cavity 11 inside the rear floor longitudinal beam 1, the cavity structure can absorb collision energy, protecting the vehicle body structure and occupant safety. Furthermore, a mounting bracket 2 is installed inside the profile cavity 11, and the mounting bracket 2 is connected to the rear subframe via a connecting sleeve 3, which enhances the overall rigidity of the vehicle body and improves the vehicle's passive safety performance. Moreover, by installing the mounting bracket 2 inside the profile cavity 11, the mounting bracket 2 can form a reinforcing structure inside the profile cavity 11, strengthening the structural strength of the rear floor longitudinal beam 1 and improving the reliability of the rear floor longitudinal beam 1's operation.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear floor longitudinal beam assembly, characterized in that, include: Rear floor longitudinal beam (1), wherein a profile cavity (11) is formed inside the rear floor longitudinal beam (1); Mounting bracket (2), which is installed in the profile cavity (11), and the mounting bracket (2) forms a receiving cavity (21), which is open at the bottom of the rear floor longitudinal beam (1); A connecting sleeve (3) is installed in the receiving cavity (21) and is used to be detachably connected to the rear subframe via a connector.

2. The rear floor longitudinal beam assembly according to claim 1, characterized in that, The rear floor longitudinal beam (1) includes a longitudinal beam top plate (12) and a longitudinal beam bottom plate (13) for forming the profile cavity (11). The mounting bracket (2) includes a bracket top plate (22) and a bracket bottom plate (23). The bracket top plate (22) is connected to the longitudinal beam top plate (12), and the bracket bottom plate (23) is connected to the longitudinal beam bottom plate (13).

3. The rear floor longitudinal beam assembly according to claim 2, characterized in that, The top plate (12) of the longitudinal beam is provided with a top mounting hole (121), and the top plate (22) of the bracket extends into the top mounting hole (121) and is fixedly connected to the top plate (12) of the longitudinal beam; And / or, the bottom plate (13) of the longitudinal beam is provided with a bottom mounting hole (131), the receiving cavity (21) is connected to the lower part of the rear floor longitudinal beam (1) through the bottom mounting hole (131), and at least a portion of the bracket bottom plate (23) extends into the bottom mounting hole (131).

4. The rear floor longitudinal beam assembly according to claim 3, characterized in that, The bracket base plate (23) includes a base plate body (231) and a bottom boss (232). The bottom boss (232) protrudes downward from the bottom of the base plate body (231). The base plate body (231) is attached to the upper surface of the longitudinal beam base plate (13). The bottom boss (232) extends into the bottom mounting hole (131) and is in clearance fit with the inner wall of the bottom mounting hole (131).

5. The rear floor longitudinal beam assembly according to claim 2, characterized in that, The mounting bracket (2) also includes an intermediate main body section (24), the bracket top plate (22) and the bracket bottom plate (23) are respectively connected to the two ends of the intermediate main body section (24), and the rear floor longitudinal beam (1) also includes a longitudinal beam intermediate plate (14) located between the longitudinal beam top plate (12) and the longitudinal beam bottom plate (13), and the intermediate main body section (24) passes through the longitudinal beam intermediate plate (14).

6. The rear floor longitudinal beam assembly according to claim 5, characterized in that, The intermediate main body section (24) includes an upper connecting section (241) and a lower mounting section (242) connected together. At least a portion of the outer diameter of the lower mounting section (242) is larger than the outer diameter of the upper connecting section (241). The receiving cavity (21) is formed in the lower mounting section (242) and extends downward through the bracket base plate (23).

7. The rear floor longitudinal beam assembly according to claim 5, characterized in that, The outer peripheral wall of the intermediate main body section (24) is provided with at least one vertically extending reinforcing rib.

8. The rear floor longitudinal beam assembly according to claim 1, characterized in that, The inner peripheral wall of the receiving cavity (21) is provided with an internal thread section, and the outer peripheral wall of the connecting sleeve (3) is provided with an external thread section, and the external thread section is threadedly engaged with the internal thread section.

9. The rear floor longitudinal beam assembly according to claim 1, characterized in that, The vertical length of the connecting sleeve (3) is less than 2 / 3 of the vertical depth of the receiving cavity (21).

10. A vehicle, characterized in that, Includes a rear subframe and a rear floor longitudinal beam assembly as described in any one of claims 1-9.

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