Rear suspension mounting structure and vehicle

Abstract

The invention discloses a rear suspension mounting structure and a vehicle, and the rear suspension mounting structure comprises a rear suspension outer plate assembly which is provided with a rear suspension mounting hole; the rear suspension inner plate is arranged on one side of the rear suspension outer plate assembly, a rear suspension nut sleeve assembly is arranged between the rear suspension inner plate and the rear suspension outer plate assembly, the rear suspension nut sleeve assembly and the rear suspension mounting holes are arranged in a one-to-one correspondence mode, and a first cavity is formed between the rear suspension inner plate and the rear suspension outer plate assembly; the mounting directions of the at least two rear suspension nut sleeve assemblies are perpendicular to each other; the rear wall lower reinforcing beam is arranged on the side, back to the rear suspension outer plate assembly, of the rear suspension inner plate and covers the two rear suspension nut sleeve assemblies located on the upper portion, and a second cavity is formed between the rear wall lower reinforcing beam and the rear suspension inner plate. The two cavity structures are arranged at the mounting position, so that the whole rear suspension mounting structure is of a box body structure, the requirement for the thickness of a plate is not high on the premise that the requirement for dynamic stiffness is met, and therefore the vehicle weight can be reduced, and the requirement for light weight of the vehicle is met.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle structures, and more specifically, to a rear suspension mounting structure and a vehicle. Background Art

[0002] At present, people pay more and more attention to safe travel. Key point dynamic stiffness is an important part of driving safety. Heavy truck models are non-load-bearing bodies, and the suspension is a bridge connecting the frame and the cab. During the driving process of the vehicle, it plays a role in connecting, flipping and shock-absorbing the cab, thereby improving the driver's comfort.

[0003] At present, in order to meet the dynamic stiffness requirements, the rear suspension mounting structure of heavy truck models usually improves the dynamic stiffness by using thicker panels. Thicker panels indicate a heavier vehicle body weight, resulting in poorer vehicle endurance.

[0004] Therefore, how to improve the dynamic stiffness of the rear suspension mounting structure without increasing the thickness of the plate is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a rear suspension mounting structure to improve the dynamic stiffness of the rear suspension mounting structure without increasing the thickness of the plate;

[0006] Another object of the present application is to provide a vehicle having the above-mentioned rear suspension mounting structure.

[0007] To achieve the above objectives, this application provides the following technical solutions:

[0008] A first aspect of the present application provides a rear suspension mounting structure, comprising:

[0009] A rear suspension outer panel assembly, comprising a rear enclosure lower cross beam and a rear suspension reinforcement plate that fit together, and from top to bottom, the rear suspension outer panel assembly has a first rear suspension mounting hole, a second rear suspension mounting hole, and a third rear suspension mounting hole in a rear suspension mounting area;

[0010] A rear suspension inner plate is arranged at one side of the rear suspension outer plate assembly, and a rear suspension nut sleeve assembly is arranged between the rear suspension outer plate assembly, the rear suspension nut sleeve assembly is arranged in one-to-one correspondence with the first rear suspension mounting hole, the second rear suspension mounting hole and the third rear suspension mounting hole, a first cavity is formed between the rear suspension inner plate and the rear suspension outer plate assembly, and at least two of the three rear suspension nut sleeve assemblies have vertical mounting directions;

[0011] The rear enclosure lower reinforcement beam is arranged on the side of the rear suspension inner plate facing away from the rear suspension outer plate assembly, and covers the rear suspension nut sleeve assembly corresponding to the first rear suspension mounting hole and the second rear suspension mounting hole located at the upper portion, and forms a second cavity between the rear suspension inner plate and the rear suspension inner plate.

[0012] In a possible implementation, the rear suspension nut sleeve assembly corresponding to the first rear suspension mounting hole is a first rear suspension nut sleeve assembly;

[0013] The rear suspension nut sleeve assembly corresponding to the second rear suspension mounting hole is a second rear suspension nut sleeve assembly;

[0014] The rear suspension nut sleeve assembly corresponding to the third rear suspension mounting hole is a third rear suspension nut sleeve assembly;

[0015] The installation directions of the first rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly are the same, and are both perpendicular to the installation direction of the second rear suspension nut sleeve assembly.

[0016] In a possible implementation, the first rear suspension nut sleeve assembly includes a first support sleeve and a first nut, the first support sleeve is welded between the rear suspension inner plate and the rear suspension outer plate assembly, the first nut is communicated with the first support sleeve, and is welded to a side of the rear suspension inner plate facing away from the rear suspension outer plate assembly;

[0017] and / or,

[0018] The second rear suspension nut sleeve assembly includes a second support sleeve and a second nut, the second support sleeve is welded between the rear suspension inner plate and the rear suspension outer plate assembly, the second nut is communicated with the second support sleeve and is welded to a side of the rear suspension inner plate facing away from the rear suspension outer plate assembly, and the second support sleeve is perpendicular to the axis of the first support sleeve;

[0019] and / or,

[0020] The third rear suspension nut sleeve assembly includes a third support sleeve and a third nut. The third support sleeve is welded between the rear suspension inner plate and the rear suspension outer plate assembly. The third nut is connected to the third support sleeve and is welded to the side of the rear suspension inner plate facing away from the rear suspension outer plate assembly. The second support sleeve is perpendicular to the axis of the third support sleeve.

[0021] In a possible implementation manner, the third supporting sleeve and the second supporting sleeve have the same length, and both are greater than the length of the first supporting sleeve.

[0022] In a possible implementation, the first rear suspension nut sleeve assembly, the second rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly are all connected at corresponding positions by spot welding and burning welding processes.

[0023] In a possible implementation, the rear suspension mounting structure includes, from top to bottom, a first mounting area, a second mounting area, and a third mounting area, the first mounting area and the third mounting area extend in a vertical direction, and the second mounting area extends in a horizontal direction;

[0024] The first rear suspension nut sleeve assembly is arranged in the first installation area, the second rear suspension nut sleeve assembly is arranged in the second installation area, and the third rear suspension nut sleeve assembly is arranged in the third installation area.

[0025] In a possible implementation, the third installation area is connected to a floor assembly, and the floor assembly includes:

[0026] A floor body, which is arranged on the lower side of the third rear suspension nut sleeve assembly and is welded to the lower cross beam of the rear enclosure;

[0027] The floor longitudinal beam is supported on the lower side of the floor body and is welded to the rear suspension inner plate.

[0028] In a possible implementation, the first installation area is connected to a rear enclosure outer panel and a rear enclosure longitudinal beam, the rear enclosure longitudinal beam is a bridge connecting the rear enclosure outer panel and the rear enclosure lower cross beam, and the rear enclosure outer panel is the rear enclosure outer panel of the cab.

[0029] In a possible implementation, the thickness of the rear outer panel is 0.7 mm to 1.2 mm; and / or,

[0030] The thickness of the rear longitudinal beam is 1.0 mm to 1.4 mm; and / or,

[0031] The thickness of the rear suspension reinforcement plate is 1.2 mm to 1.8 mm; and / or,

[0032] The thickness of the floor body is 0.7 mm to 1.2 mm; and / or,

[0033] The thickness of the rear lower reinforcement beam is 0.8 mm to 1.4 mm; and / or,

[0034] The thickness of the lower cross beam of the rear enclosure is 1.2 mm to 1.8 mm; and / or,

[0035] The thickness of the rear suspension inner plate is 1.8 mm to 2.4 mm; and / or,

[0036] The thickness of the floor longitudinal beam is 2.0 mm to 2.4 mm.

[0037] The rear suspension mounting structure provided by the present application is provided with a rear suspension nut sleeve assembly between the rear suspension outer plate assembly and the rear suspension inner plate. In addition to being able to realize the connection with the rear suspension, the rear suspension nut sleeve assembly can also play a role in supporting the rear suspension outer plate assembly and the rear suspension inner plate, thereby improving the connection stiffness of the rear suspension outer plate assembly and the rear suspension inner plate, so that the rear suspension mounting structure has a higher dynamic stiffness. A first cavity is formed between the rear suspension inner plate and the rear suspension outer plate assembly, and a second cavity is formed between the rear enclosure lower reinforcement beam and the rear suspension inner plate. By arranging two cavity structures at the installation position, the rear suspension mounting structure as a whole presents a box structure. On the premise of meeting the dynamic stiffness requirements, the plate thickness requirements are not high, thereby reducing the vehicle weight and ensuring that the vehicle lightweight requirements are met. In addition, the installation directions of at least two rear suspension nut sleeve assemblies are vertical, so that the rear suspension can be connected to the cab from at least two perpendicular directions, ensuring that the rear suspension mounting structure can have a greater connection strength with the rear suspension.

[0038] A second aspect of the present application provides a vehicle, comprising a cab, a frame and a rear suspension, wherein the cab is mounted on the frame via the rear suspension, the cab having a rear suspension mounting area, the rear suspension having a cab mounting area, the structure of the rear suspension mounting area being the rear suspension mounting structure as described in any one of the above items, and the cab mounting area being connected to the rear suspension mounting area.

[0039] A vehicle provided in the present application has all the technical effects of the above-mentioned rear suspension mounting structure due to the adoption of the above-mentioned rear suspension mounting structure, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of a partial structure of a cab disclosed in an embodiment of the present application;

[0042] Figure 2 An exploded view of the cab and rear suspension disclosed in the embodiment of the present application;

[0043] Figure 3 An exploded view of the rear suspension mounting structure disclosed in an embodiment of the present application;

[0044] Figure 4It is a structural schematic diagram of the rear suspension installation structure disclosed in the embodiment of the present application;

[0045] Figure 5 A plan view of the rear suspension mounting structure disclosed in an embodiment of the present application;

[0046] Figure 6 for Figure 5 Section view along line AA.

[0047] The meanings of the reference numerals in the figures are as follows:

[0048] A-rear suspension installation area; B-installation point; C-installation point;

[0049] 101-rear enclosure outer panel; 102-rear enclosure longitudinal beam; 103-rear suspension reinforcement plate; 104-first support sleeve; 105-third support sleeve; 106-second support sleeve; 107-floor body; 108-rear enclosure lower reinforcement beam; 109-rear enclosure lower cross beam; 110-rear suspension inner panel; 111-floor longitudinal beam; 112-second nut; 113-first cavity; 114-second cavity; 115-third nut. DETAILED DESCRIPTION

[0050] The core of this application is to provide a rear suspension mounting structure to improve the dynamic stiffness of the rear suspension mounting structure without increasing the thickness of the plate;

[0051] Another core of the present application is to provide a vehicle having the above-mentioned rear suspension mounting structure.

[0052] The following describes the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the application described in the claims. In addition, the entire content of the composition represented by the following embodiments is not limited to the solution required as the application described in the claims. It should be noted that, for the convenience of description, only the parts related to the relevant application are shown in the drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0053] like Figure 1 and Figure 2 As shown, the rear suspension mounting structure disclosed in the embodiment of the present application is located at the position of the rear suspension mounting area A of the cab. The rear suspension has two cab mounting areas and two rear suspension mounting areas A corresponding to the cab mounting areas. The cab mounting area has a mounting point B, and the cab mounting area has a mounting point C. The connection between the mounting point B and the mounting point C is achieved by docking the rear suspension and the cab.

[0054] like Figure 3-Figure 6As shown, the rear suspension mounting structure disclosed in the embodiment of the present application includes a rear suspension outer panel assembly, a rear suspension inner panel 110 and a rear enclosure lower reinforcement beam 108. The rear suspension outer panel assembly is a two-layer plate structure, including a rear enclosure lower cross beam 109 and a rear suspension reinforcement plate 103 that fit together.

[0055] The rear lower cross member 109 is a thin panel molding, which plays the role of optimizing the sealing of the whole vehicle. It is located at the rear of the cab and extends to the left and right sides of the cab along the width direction of the cab. The rear suspension reinforcement plate 103 is used to strengthen the rear suspension installation point. It is only designed in the rear suspension installation area A, and does not need to extend to the left and right sides of the cab like the rear lower cross member 109 because it needs to play a sealing role.

[0056] From top to bottom, the rear suspension outer plate assembly has a first rear suspension mounting hole, a second rear suspension mounting hole, and a third rear suspension mounting hole in the rear suspension mounting area. The positions of the first rear suspension mounting hole, the second rear suspension mounting hole, and the third rear suspension mounting hole are the positions of the mounting point B. Two of the first rear suspension mounting hole, the second rear suspension mounting hole, and the third rear suspension mounting hole can be provided to improve the reliability of the connection. In this embodiment, the first rear suspension mounting hole, the second rear suspension mounting hole, and the third rear suspension mounting hole are provided so that when connected to the rear suspension, the fastener can pass through the rear suspension outer plate assembly and connect with the rear suspension nut sleeve assembly.

[0057] The rear suspension inner plate 110 is arranged on one side of the rear suspension outer plate assembly, and a rear suspension nut sleeve assembly is arranged between the rear suspension outer plate assembly. The rear suspension nut sleeve assembly is arranged one-to-one corresponding to the first rear suspension mounting hole, the second rear suspension mounting hole and the third rear suspension mounting hole.

[0058] When the rear suspension is installed, its cab installation area is attached to the side of the rear suspension outer panel assembly facing away from the rear suspension inner panel 110. The rear suspension reinforcement plate 103 can be arranged to be located on the side of the rear enclosure lower cross beam 109 close to the rear suspension inner panel 110. Rear suspension nut sleeve assemblies are arranged at positions corresponding to the first rear suspension mounting hole, the second rear suspension mounting hole and the third rear suspension mounting hole. In addition to welding the edge of the rear suspension inner panel 110 to the rear suspension outer panel assembly, the rear suspension nut sleeve assembly can also play a role in fixing the rear suspension inner panel 110 to the rear suspension outer panel assembly, thereby improving the rigidity of the connection between the rear suspension inner panel 110 and the rear suspension outer panel assembly.

[0059] When installing the rear suspension, the fastener can pass through the fastening hole on the installation point C and cooperate with the corresponding rear suspension nut sleeve assembly thread to achieve the connection between the rear suspension and the cab. Among the three rear suspension nut sleeve assemblies, at least two rear suspension nut sleeve assemblies are installed in a vertical direction, so that the installation point B and the installation point C are fastened from different directions, which improves the reliability of the connection between the rear suspension and the cab.

[0060] The lower rear wall reinforcement beam 108 is arranged on the side of the rear suspension inner plate 110 facing away from the rear suspension outer plate assembly, and covers the two rear suspension nut sleeve assemblies located on the upper part. Since the two upper rear suspension nut sleeve assemblies (i.e., the rear suspension nut sleeve assemblies corresponding to the first rear suspension mounting hole and the second rear suspension mounting hole) are far away from the edge position with better rigidity of the cab, deformation is easy here, and adding the lower rear wall reinforcement beam 108 can further improve the dynamic rigidity here.

[0061] In this embodiment, a first cavity 113 is formed between the rear suspension inner plate 110 and the rear suspension outer plate assembly, and a second cavity 114 is formed between the rear enclosure lower reinforcement beam 108 and the rear suspension inner plate 110. Two cavities (the first cavity 113 and the second cavity 114) are formed at the rear suspension nut sleeve assembly corresponding to the first rear suspension mounting hole and the second rear suspension mounting hole, so that the thickness here is relatively large, and therefore the dynamic stiffness is relatively large.

[0062] In this embodiment, a three-layer plate structure (rear enclosure lower cross beam 109, rear suspension inner plate 110, rear suspension reinforcement plate 103) is adopted for the installation point of the rear suspension, which are connected as a whole through the rear suspension nut sleeve assembly; the rear suspension nut sleeve assembly acts as an intermediate bridge to connect the three-layer plates, thereby reducing the weight while meeting the dynamic stiffness requirements of the rear suspension installation point.

[0063] Table 1 Analysis of the dynamic stiffness of the rear suspension installation

[0064] Since the cab has two rear suspension installation areas A on the left and right sides (such as the left rear suspension and the right rear suspension in Table 1), Table 1 takes the center points of the left and right rear suspensions as the test objects, and tests the dynamic stiffness in the three directions of xyz under the dynamic load conditions of 50-300Hz. It can be seen that the average dynamic stiffness in the three directions of the center points of the left and right rear suspensions obviously exceeds the target value.

[0065] The rear suspension mounting structure disclosed in the embodiment of the present application is provided with a rear suspension nut sleeve assembly between the rear suspension outer panel assembly and the rear suspension inner panel 110. In addition to being able to achieve connection with the rear suspension, the rear suspension nut sleeve assembly can also support the rear suspension outer panel assembly and the rear suspension inner panel 110, thereby improving the connection stiffness between the rear suspension outer panel assembly and the rear suspension inner panel 110, thereby making the rear suspension mounting structure have higher dynamic stiffness.

[0066] A first cavity 113 is formed between the rear suspension inner plate 110 and the rear suspension outer plate assembly, and a second cavity 114 is formed between the rear enclosure lower reinforcement beam and the rear suspension inner plate 110. By arranging two cavity structures at the installation position, the rear suspension installation structure as a whole presents a box structure. Under the premise of meeting the dynamic stiffness requirements, the plate thickness requirements are not high, thereby reducing the vehicle weight and ensuring that the vehicle lightweight requirements are met. In addition, the installation directions of at least two rear suspension nut sleeve assemblies are vertical, so that the rear suspension can be connected to the cab from at least two perpendicular directions, ensuring that the rear suspension installation structure can have a greater connection strength with the rear suspension.

[0067] In this embodiment, the rear suspension nut sleeve assembly corresponding to the first rear suspension mounting hole is the first rear suspension nut sleeve assembly; the rear suspension nut sleeve assembly corresponding to the second rear suspension mounting hole is the second rear suspension nut sleeve assembly; and the rear suspension nut sleeve assembly corresponding to the third rear suspension mounting hole is the third rear suspension nut sleeve assembly.

[0068] The installation directions of the first rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly are the same and are both perpendicular to the installation direction of the second rear suspension nut sleeve assembly. For example, the first rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly can be designed to be installed in a horizontal direction, that is, when installed, the axial direction of the fastener is in a horizontal direction; then the installation direction of the second rear suspension nut sleeve assembly is in a vertical direction.

[0069] In this embodiment, the first rear suspension nut sleeve assembly includes a first support sleeve 104 and a first nut. The first support sleeve 104 is welded between the rear suspension inner plate 110 and the rear suspension outer plate assembly, so as to achieve reinforcement of the upper area of ​​the rear suspension inner plate 110 and the rear suspension outer plate assembly. The first nut is connected to the first support sleeve 104 and is welded to the side of the rear suspension inner plate 110 facing away from the rear suspension outer plate assembly. In order to achieve the connection between the first nut and the first support sleeve 104, it is necessary to open a through hole in the rear suspension inner plate 110 that is connected to the first nut and the first support sleeve 104, so that the fastener can pass through the first support sleeve 104 and the rear suspension inner plate 110 and connect with the first nut.

[0070] The second rear suspension nut sleeve assembly includes a second support sleeve 106 and a second nut 112. The second support sleeve 106 is welded between the rear suspension inner plate 110 and the rear suspension outer plate assembly, so as to realize the reinforcement of the middle area of ​​the rear suspension inner plate 110 and the rear suspension outer plate assembly. The second nut 112 is connected with the second support sleeve 106 and is welded to the side of the rear suspension inner plate 110 facing away from the rear suspension outer plate assembly. The second support sleeve 106 is perpendicular to the axis of the first support sleeve 104. In order to realize the connection between the second nut 112 and the second support sleeve 106, it is necessary to open a through hole in the rear suspension inner plate 110 that is connected with the second nut 112 and the second support sleeve 106, so that the fastener can pass through the second support sleeve 106 and the rear suspension inner plate 110 and connect with the second nut 112.

[0071] The third rear suspension nut sleeve assembly includes a third support sleeve 105 and a third nut 115. The third support sleeve 105 is welded between the rear suspension inner plate 110 and the rear suspension outer plate assembly, so as to realize the reinforcement of the lower area of ​​the rear suspension inner plate 110 and the rear suspension outer plate assembly. The third nut 115 is connected with the third support sleeve 105 and is welded to the side of the rear suspension inner plate 110 facing away from the rear suspension outer plate assembly. The second support sleeve 106 is perpendicular to the axis of the third support sleeve 105. In order to realize the connection between the third nut 115 and the third support sleeve 105, it is necessary to open a through hole in the rear suspension inner plate 110 that is connected with the third nut 115 and the third support sleeve 105, so that the fastener can pass through the third support sleeve 105 and the rear suspension inner plate 110 and connect with the third nut 115.

[0072] Since the first support sleeve 104 and the third support sleeve 105 are both located on the vertical plate of the cab, and the first support sleeve 104 is located at a position having both the first cavity 113 and the second cavity 114, while the third support sleeve 105 is located at a position having only the first cavity 113, in order to make the regional structural thickness of the first support sleeve 104 and the third support sleeve 105 close, in other words, in order to reduce the regional structural thickness of the first support sleeve 104, the length of the third support sleeve 105 can be designed to be greater than the length of the first support sleeve 104, that is, the length of the first support sleeve 104 is shorter than the length of the third support sleeve 105, so that the width of the first cavity 113 at the position of the first support sleeve 104 is narrower than that at the position of the third support sleeve 105.

[0073] In addition, the lengths of the third support sleeve 105 and the second support sleeve 106 can be designed to be the same. It should be noted that the lengths mentioned above all refer to the lengths in the axial direction. For example, the length of the first support sleeve 104 can be designed to be 20 mm, and the lengths of the third support sleeve 105 and the second support sleeve 106 can be designed to be 30 mm. The specific sizes can be selected by those skilled in the art according to the actual scenario.

[0074] In a specific embodiment of the present application, the first rear suspension nut sleeve assembly, the second rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly are all connected at corresponding positions by spot welding and welding processes. While ensuring the connection strength of the parts, the structure is made more stable and safe, and can easily meet the needs of the vehicle under various complex road conditions. When welding the first rear suspension nut sleeve assembly, the second rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly, the rear enclosure lower cross beam 109 and the rear suspension reinforcement plate 103 can be welded at the positions of the first rear suspension mounting hole, the second rear suspension mounting hole and the third rear suspension mounting hole.

[0075] For ease of understanding, the rear suspension mounting structure is divided into a plurality of regions from top to bottom, which are respectively defined as a first mounting region, a second mounting region and a third mounting region according to different extension directions of the regions.

[0076] The first installation area and the third installation area extend in a vertical direction, the second installation area extends in a horizontal direction, and the second installation area is located between the first installation area and the third installation area, that is, the second installation area is a transition area between the first installation area and the third installation area.

[0077] At present, the rear suspension mounting point of the cab is usually designed below the second mounting area, that is, below the turning area, that is, all mounting points are set in the third mounting area, which will undoubtedly make the cab entrance higher. Traditional heavy truck drivers use two or three steps to enter the cab, while low-entry heavy trucks use no steps or one step; low entry can improve the convenience of getting on and off the vehicle with a lower body height.

[0078] Therefore, in order to lower the entrance of the cab, the first rear suspension nut sleeve assembly is arranged in the first installation area, the second rear suspension nut sleeve assembly is arranged in the second installation area, and the third rear suspension nut sleeve assembly is arranged in the third installation area. That is, the rear suspension installation point is moved upward, so that the entire cab can be moved downward, so that the cab can be entered with one step.

[0079] In a specific embodiment of the present application, the third installation area is connected to a floor assembly, and the floor assembly includes a floor body 107 and a floor longitudinal beam 111. The floor body 107 is arranged on the lower side of the third rear suspension nut sleeve assembly and is welded to the rear enclosure lower cross beam 109. Since the rear enclosure lower reinforcement beam 108 protrudes into the cab, an avoidance groove for the protruding portion of the rear enclosure lower reinforcement beam 108 to be embedded can be provided on the floor body 107. The floor body 107 can also be welded and fixed to the rear enclosure lower reinforcement beam 108.

[0080] The floor longitudinal beam 111 is supported on the lower side of the floor body 107 and is welded to the rear suspension inner panel 110. The floor longitudinal beam 111 can support the floor body 107 and improve the installation strength of the floor body 107.

[0081] The first installation area is connected with the rear enclosure outer panel 101 and the rear enclosure longitudinal beam 102. The rear enclosure longitudinal beam 102 is a bridge connecting the rear enclosure outer panel 101 and the rear enclosure lower cross beam 109. The rear enclosure outer panel 101 is the rear enclosure outer panel of the cab. The rear enclosure outer panel 101 is a thin panel molding, which only plays the function of optimizing the sealing of the whole vehicle, that is, used to seal the rear side of the cab. The rear enclosure longitudinal beam 102 is a bridge connecting the rear enclosure outer panel 101 and the rear enclosure lower cross beam 109, and plays a key role in upper and lower connection support and reinforcement.

[0082] In a specific embodiment of the present application, the thickness of the rear enclosure outer panel 101 can be designed to be 0.7mm~1.2mm; and / or, the thickness of the rear enclosure longitudinal beam 102 can be designed to be 1.0mm~1.4mm; and / or, the thickness of the rear suspension reinforcement plate 103 can be designed to be 1.2mm~1.8mm; and / or, the thickness of the floor body 107 can be designed to be 0.7mm~1.2mm; and / or, the thickness of the rear enclosure lower reinforcement beam 108 can be designed to be 0.8mm~1.4mm; and / or, the thickness of the rear enclosure lower cross beam 109 can be designed to be 1.2mm~1.8mm; and / or, the thickness of the rear suspension inner panel 110 can be designed to be 1.8mm~2.4mm; and / or, the thickness of the floor longitudinal beam 111 can be designed to be 2.0mm~2.4mm. And / or, the wall thickness of the first supporting sleeve 104, the second supporting sleeve 106 and the third supporting sleeve 105 can be designed to be 5 mm to 8 mm.

[0083] In summary, the rear suspension mounting structure disclosed in the embodiment of the present application adopts a double-cavity structure at the rear suspension mounting position, and the components can be connected by spot welding and welding. For example, the connection between the rear suspension inner plate 110, the rear enclosure lower cross beam 109, the rear suspension reinforcement plate 103 and the rear enclosure lower reinforcement beam 108 can be connected by spot welding + welding. By welding multiple components into a double-cavity structure, there is no need to design a more complex structure, making the structure of a single part relatively simple and reducing the manufacturing cost, thereby providing a new structural form for areas with higher structural strength; reducing the material thickness of the parts, the thickness of the plate can be within 2.4 mm, which is conducive to the lightweight design of the vehicle body and improving the endurance of new energy vehicles.

[0084] The embodiment of the present application further discloses a vehicle, including a cab, a frame and a rear suspension, wherein the cab is mounted on the frame through the rear suspension, the cab has a rear suspension mounting area A, the rear suspension has a cab mounting area, the structure of the rear suspension mounting area A is the rear suspension mounting structure disclosed in the above embodiment, and the cab mounting area is connected to the rear suspension mounting area A. Since the above rear suspension mounting structure is adopted, all the technical effects of the above rear suspension mounting structure are combined, which will not be described in detail herein.

[0085] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0086] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0087] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0088] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A rear suspension mounting structure, characterized in that: include: A rear suspension outer panel assembly comprises a rear enclosure lower cross beam (109) and a rear suspension reinforcement plate (103) that fit together, and from top to bottom, the rear suspension outer panel assembly has a first rear suspension mounting hole, a second rear suspension mounting hole, and a third rear suspension mounting hole in a rear suspension mounting area; A rear suspension inner plate (110) is arranged on one side of the rear suspension outer plate assembly, and a rear suspension nut sleeve assembly is arranged between the rear suspension outer plate assembly, the rear suspension nut sleeve assembly is arranged in a one-to-one correspondence with the first rear suspension mounting hole, the second rear suspension mounting hole and the third rear suspension mounting hole, a first cavity (113) is formed between the rear suspension inner plate (110) and the rear suspension outer plate assembly, and at least two of the three rear suspension nut sleeve assemblies have installation directions that are perpendicular; A rear enclosure lower reinforcement beam (108) is disposed on a side of the rear suspension inner plate (110) facing away from the rear suspension outer plate assembly, and covers the rear suspension nut sleeve assembly corresponding to the first rear suspension mounting hole and the second rear suspension mounting hole at the upper portion, and forms a second cavity (114) between the rear suspension inner plate (110).

2. The rear suspension mounting structure according to claim 1, characterized in that: The rear suspension nut sleeve assembly corresponding to the first rear suspension mounting hole is a first rear suspension nut sleeve assembly; The rear suspension nut sleeve assembly corresponding to the second rear suspension mounting hole is a second rear suspension nut sleeve assembly; The rear suspension nut sleeve assembly corresponding to the third rear suspension mounting hole is a third rear suspension nut sleeve assembly; The installation directions of the first rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly are the same, and are both perpendicular to the installation direction of the second rear suspension nut sleeve assembly.

3. The rear suspension mounting structure according to claim 2, characterized in that: The first rear suspension nut sleeve assembly comprises a first support sleeve (104) and a first nut, the first support sleeve (104) being welded between the rear suspension inner plate (110) and the rear suspension outer plate assembly, the first nut being in communication with the first support sleeve (104) and being welded to a side of the rear suspension inner plate (110) facing away from the rear suspension outer plate assembly; and / or, The second rear suspension nut sleeve assembly comprises a second support sleeve (106) and a second nut (112); the second support sleeve (106) is welded between the rear suspension inner plate (110) and the rear suspension outer plate assembly; the second nut (112) is connected to the second support sleeve (106) and is welded to a side of the rear suspension inner plate (110) facing away from the rear suspension outer plate assembly; the second support sleeve (106) is perpendicular to the axis of the first support sleeve (104); and / or, The third rear suspension nut sleeve assembly comprises a third support sleeve (105) and a third nut (115); the third support sleeve (105) is welded between the rear suspension inner plate (110) and the rear suspension outer plate assembly; the third nut (115) is connected to the third support sleeve (105) and is welded to a side of the rear suspension inner plate (110) facing away from the rear suspension outer plate assembly; the second support sleeve (106) is perpendicular to the axis of the third support sleeve (105).

4. The rear suspension mounting structure according to claim 3, characterized in that: The third supporting sleeve (105) and the second supporting sleeve (106) have the same length, and are both greater than the length of the first supporting sleeve (104).

5. The rear suspension mounting structure according to claim 2, characterized in that: The first rear suspension nut sleeve assembly, the second rear suspension nut sleeve assembly and the third rear suspension nut sleeve assembly are all connected at corresponding positions by spot welding and burning welding processes.

6. The rear suspension mounting structure according to any one of claims 2 to 5, characterized in that: The rear suspension mounting structure includes a first mounting area, a second mounting area and a third mounting area from top to bottom, the first mounting area and the third mounting area extend in a vertical direction, and the second mounting area extends in a horizontal direction; The first rear suspension nut sleeve assembly is arranged in the first installation area, the second rear suspension nut sleeve assembly is arranged in the second installation area, and the third rear suspension nut sleeve assembly is arranged in the third installation area.

7. The rear suspension mounting structure according to claim 6, characterized in that: The third mounting area is connected to a floor assembly, and the floor assembly includes: A floor body (107) is arranged on the lower side of the third rear suspension nut sleeve assembly and is welded to the rear enclosure lower cross beam (109); A floor longitudinal beam (111) is supported on the lower side of the floor body (107) and is welded to the rear suspension inner plate (110).

8. The rear suspension mounting structure according to claim 7, characterized in that: The first installation area is connected to a rear enclosure outer panel (101) and a rear enclosure longitudinal beam (102); the rear enclosure longitudinal beam (102) is a bridge connecting the rear enclosure outer panel (101) and the rear enclosure lower cross beam (109); and the rear enclosure outer panel (101) is a rear enclosure outer panel of a cab.

9. The rear suspension mounting structure according to claim 8, characterized in that: The thickness of the rear outer panel (101) is 0.7 mm to 1.2 mm; and / or, The thickness of the rear longitudinal beam (102) is 1.0 mm to 1.4 mm; and / or, The thickness of the rear suspension reinforcement plate (103) is 1.2 mm to 1.8 mm; and / or, The thickness of the floor body (107) is 0.7 mm to 1.2 mm; and / or, The thickness of the rear enclosure lower reinforcement beam (108) is 0.8 mm to 1.4 mm; and / or, The thickness of the rear enclosure lower cross beam (109) is 1.2 mm to 1.8 mm; and / or, The thickness of the rear suspension inner plate (110) is 1.8 mm to 2.4 mm; and / or, The thickness of the floor longitudinal beam (111) is 2.0 mm to 2.4 mm.

10. A vehicle, characterized in that: The invention comprises a cab, a frame and a rear suspension, wherein the cab is mounted on the frame via the rear suspension, the cab has a rear suspension mounting area (A), the rear suspension has a cab mounting area, the structure of the rear suspension mounting area (A) is the rear suspension mounting structure as claimed in any one of claims 1 to 9, and the cab mounting area is connected to the rear suspension mounting area (A).

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