Front auxiliary frame assembly and vehicle

Abstract

The invention discloses a front auxiliary frame assembly and a vehicle. The front auxiliary frame assembly comprises a front auxiliary frame, a sleeve assembly and a connecting assembly, the sleeve assembly comprises a first sleeve and a second sleeve, the first sleeve is fixedly connected with the front auxiliary frame, the first sleeve is of a symmetrical structure and is provided with a protruding part, the protruding part protrudes out of the front auxiliary frame, and the cross sectional area of the protruding part is gradually reduced in the direction away from the front auxiliary frame. The second sleeve is fixed to the automobile body and internally provided with an inner concave part matched with the protruding part, the inner concave part is used for containing the protruding part and abuts against the protruding part, the connecting assembly comprises a first connecting piece and a first matching piece, and the first connecting piece penetrates through the first sleeve and the second sleeve and is connected with the first matching piece so as to fix the front auxiliary frame and the automobile body. By the adoption of the technical scheme, the possibility that the front auxiliary frame moves relative to the vehicle body when bearing large horizontal acting force can be reduced, and then noise of the vehicle in the running process can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular to a front subframe assembly and a vehicle. Background Art

[0002] In order to achieve a balance between vehicle comfort and handling performance, subframes have gradually been widely used in the vehicle field.

[0003] In the related art, the subframe often includes a front subframe and a rear subframe. The front subframe is often positioned with the vehicle body through a sleeve assembly. After the positioning is achieved, the front subframe is fixed to the vehicle body through bolts.

[0004] However, in the above structure, due to the installation gap in the process of positioning by the sleeve assembly, when the front subframe assembly is subjected to a large horizontal force, the front subframe is easy to move with the vehicle body, thereby causing abnormal noise. Summary of the invention

[0005] The disclosed embodiment provides a front subframe assembly and a vehicle, which can solve the above technical problems existing in the related art. The technical solution is as follows:

[0006] In a first aspect, a front subframe assembly is provided, the front subframe assembly comprising a front subframe, a sleeve assembly and a connecting assembly;

[0007] The sleeve assembly includes a first sleeve and a second sleeve, the first sleeve is fixedly connected to the front sub-frame, the first sleeve is a symmetrical structure, and has a protrusion, the protrusion protrudes from the front sub-frame, and the cross-sectional area of ​​the protrusion gradually decreases in a direction away from the front sub-frame, the second sleeve is fixed to the vehicle body, and has an inner concave portion adapted to the protrusion, the inner concave portion is used to accommodate the protrusion, and abuts against the protrusion;

[0008] The connecting assembly includes a first connecting member and a first matching member. The first connecting member passes through the first sleeve and the second sleeve and is connected to the first matching member to fix the front subframe and the vehicle body.

[0009] In some possible implementations, the cross-section of the protrusion is circular.

[0010] In some possible implementations, the cross-section of the protrusion is oval.

[0011] In some possible implementations, the sleeve assembly includes two first sleeves and two second sleeves;

[0012] The front subframe includes a bottom plate, a plurality of cross beams, a plurality of longitudinal beams and two upper plates, the plurality of cross beams and the plurality of longitudinal beams are respectively fixed to the bottom plate, the two upper plates are respectively connected to the two ends of the same cross beam and are both connected to the bottom plate, the two first sleeves are respectively connected to the two upper plates and are both connected to the bottom plate, and the second sleeves are respectively sleeved on the outer sides of the protruding parts of the two first sleeves.

[0013] In some possible implementations, the two first sleeves are respectively welded and fixed to the two upper plates, and are both welded and fixed to the bottom plate.

[0014] In some possible implementations, the sleeve assembly further includes a third sleeve, the third sleeve being higher than the first sleeve, fixed to the front subframe, and abutting against the vehicle body;

[0015] The connecting assembly also includes a second connecting member, which passes through the third sleeve and is fixedly connected to the vehicle body.

[0016] In some possible implementations, the top of the third sleeve has a hobbing structure.

[0017] In some possible implementations, the first connecting member is a screw, and the first matching member is a nut.

[0018] In some possible implementations, the second sleeve has an internal thread that is compatible with the first connecting member.

[0019] In a second aspect, a vehicle is provided, comprising the front subframe assembly provided by the first aspect and possible implementations thereof.

[0020] The beneficial effects of the technical solution provided by the present disclosure include at least:

[0021] In the present disclosure, the cross-sectional area of ​​the protrusion gradually decreases in the direction away from the front sub-frame, that is, the protrusion has an inclined surface. During the installation process, the first sleeve and the second sleeve can be positioned through the cooperation of the protrusion and the inner recess. After the positioning is completed, the protrusion and the inner recess are tightly against each other, and there is almost no installation gap between the two, thereby reducing the possibility of the front sub-frame moving with the vehicle body when subjected to a large horizontal force, thereby reducing the noise of the vehicle during driving.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0025] Figure 2 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0026] Figure 3 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0027] Figure 4 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0028] Figure 5 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0029] Figure 6 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0030] Figure 7 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0031] Figure 8 is a structural schematic diagram of a front subframe assembly provided by an embodiment of the present disclosure;

[0032] Fig. 9 It is a structural schematic diagram of a front subframe assembly provided in an embodiment of the present disclosure.

[0033] Reference numerals:

[0034] 1. Front subframe;

[0035] 11. Bottom plate; 12. Cross beam; 121. First cross beam; 122. Second cross beam; 13. Longitudinal beam; 131. First longitudinal beam; 132. Second longitudinal beam; 14. Upper plate; 15. Transition bracket; 16. Reinforcement plate; 17. Avoidance area;

[0036] 2. Casing assembly;

[0037] 21. first sleeve; 211. protrusion; 212. first through hole;

[0038] 22, second sleeve; 221, inner concave portion; 222, second through hole; 223, convex portion;

[0039] 23. third sleeve; 231. gear hobbing structure; 232. third through hole;

[0040] 3. Connect components;

[0041] 31. First connecting member; 32. First matching member; 321. Recessed portion; 33. Second connecting member. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] In order to achieve a balance between vehicle comfort and handling performance, subframes have gradually been widely used in the vehicle field.

[0045] In the related art, the subframe often includes a front subframe and a rear subframe, and the front subframe is often positioned with the vehicle body through a sleeve assembly. The sleeve assembly includes an inner sleeve and an outer sleeve, the inner sleeve is fixedly connected to the front subframe and partially protrudes from the front subframe, the outer sleeve is fixedly connected to the vehicle body and is sleeved on the outside of the protruding part of the inner sleeve, and the inner wall of the outer sleeve has an abutment portion, which abuts against the end of the protruding part of the inner sleeve, thereby achieving positioning. Afterwards, the bolts pass through the inner sleeve and the outer sleeve in turn, and are connected to the nuts fixed on the vehicle body to fix the front subframe and the vehicle body.

[0046] However, in the above structure, since there is a certain installation gap between the outer sleeve and the protruding part of the inner sleeve, when the front subframe assembly is subjected to a large horizontal force, the outer sleeve and the inner sleeve are prone to movement, which causes the front subframe to easily move with the vehicle body, thereby causing abnormal noise.

[0047] In order to solve the above technical problems, the embodiment of the present disclosure provides a front subframe assembly, Figure 1 , Figure 2As shown, the front subframe assembly includes a front subframe 1, a sleeve assembly 2 and a connecting assembly 3. The sleeve assembly 2 includes a first sleeve 21 and a second sleeve 22. The first sleeve 21 is fixedly connected to the front subframe 1. The first sleeve 21 is a symmetrical structure and has a protrusion 211. The protrusion 211 protrudes from the front subframe 1. The cross-sectional area of ​​the protrusion 211 gradually decreases in the direction away from the front subframe 1. The second sleeve 22 is fixed to the vehicle body and has an inner recess 221 adapted to the protrusion 211. The inner recess 221 is used to accommodate the protrusion 211 and abut against the protrusion 211. The connecting assembly 3 includes a first connecting member 31 and a first matching member 32. The first connecting member 31 passes through the first sleeve 21 and the second sleeve 22 and is connected to the first matching member 32 to fix the front subframe 1 and the vehicle body.

[0048] With the front sub-frame assembly provided by the embodiment of the present disclosure, the cross-sectional area of ​​the protrusion 211 gradually decreases in the direction away from the front sub-frame 1, that is, the protrusion 211 has an inclined surface. During the installation process, the first sleeve 21 and the second sleeve 22 can be positioned by the cooperation of the protrusion 211 and the inner recess 221. After the positioning is completed, the protrusion 211 and the inner recess 221 can be tightly abutted, and there is almost no installation gap between the two, so that the possibility of the front sub-frame 1 moving with the vehicle body when subjected to a large horizontal force can be reduced, thereby reducing the noise of the vehicle during driving. In addition, with such a setting, the installation of the first sleeve 21 and the second sleeve 22 can also be positioned to reduce the difficulty of assembling the first sleeve 21 and the second sleeve 22.

[0049] Combination Figures 2 to 4 As shown, the first sleeve 21 has a first through hole 212, the second sleeve 22 has a second through hole 222, the first matching piece 32 has a first connecting hole, the first through hole 212 and the second through hole 222 are opposite to the first connecting hole, the first connecting piece 31 passes through the first through hole 212 and the second through hole 222 in sequence, enters the first connecting hole, and is fixedly connected with the first matching piece 32. Under the action of the axial force of the first connecting piece 31, the first sleeve 21 and the second sleeve 22 are tightly abutted.

[0050] like Figure 2 As shown, the first matching piece 32 is sleeved on the outside of the second sleeve 22. In this way, after the first connecting piece 31 passes through the second sleeve 22, it can be connected with the first matching piece 32, that is, the connection between the first connecting piece 31 and the first matching piece 32 can be positioned through the cooperation between the second sleeve 22 and the first matching piece 32, so that the connection between the first connecting piece 31 and the first matching piece 32 can be realized more conveniently.

[0051] Furthermore, the outer side of the second sleeve 22 has a protrusion 223, the cross-sectional area of ​​which gradually decreases in the direction away from the first sleeve 21, and the first matching piece 32 has a recessed portion 321 adapted to the protrusion 223, and the recessed portion 321 is tightly against the protrusion 223. In this way, the set between the second sleeve 22 and the first matching piece 32 can be positioned through the cooperation between the protrusion 223 and the recessed portion 321, so as to improve the assembly efficiency between the first matching piece 32 and the first connecting piece 31.

[0052] The disclosed embodiment does not limit the material and molding method of the first sleeve 21 and the second sleeve 22. For example, the first sleeve 21 and the second sleeve 22 are made of metal materials and are molded by a high-frequency heat treatment process. As a result, the hardness of the first sleeve 21 and the second sleeve 22 can be improved, thereby improving the structural strength of the front subframe assembly at the first sleeve 21 and the second sleeve 22.

[0053] Combination Figure 1 As shown, the front subframe 1 includes a bottom plate 11, a plurality of cross beams 12 and a plurality of longitudinal beams 13. The plurality of cross beams 12 and the plurality of longitudinal beams 13 are fixed on the bottom plate 11. The plurality of cross beams 12 include a first cross beam 121 and a second cross beam 122, and the plurality of longitudinal beams 13 include a first longitudinal beam 131 and a second longitudinal beam 132. The first longitudinal beam 131 and the second longitudinal beam 132 are respectively connected to both ends of the first cross beam 121, and are respectively fixedly connected to both ends of the second cross beam 122.

[0054] Thus, the plurality of cross members 12 and the plurality of longitudinal members 13 form a basic framework of the front subframe 1 to support the vehicle body fixed to the front subframe 1 .

[0055] The disclosed embodiment does not limit the molding process of the multiple cross beams 12, the multiple longitudinal beams 13 and the bottom plate 11. For example, the multiple cross beams 12, the multiple longitudinal beams 13 and the bottom plate 11 are molded by a high-frequency heat treatment process, so that the hardness of the multiple cross beams 12, the multiple longitudinal beams 13 and the bottom plate 11 can be improved, thereby improving the structural strength of the front subframe assembly.

[0056] The disclosed embodiment does not limit the fixing connection method of the multiple cross beams 12, multiple longitudinal beams 13 and the bottom plate 11. For example, the multiple cross beams 12, multiple longitudinal beams 13 and the bottom plate 11 can be fixed in pairs by welding, so that the stable connection of each structure can be achieved in a simple way.

[0057] Further, combined with Figure 1 As shown, a first cavity is formed between the first cross beam 121 and the bottom plate 11 , a second cavity is formed between the second cross beam 122 and the bottom plate 11 , a third cavity is formed between the first longitudinal beam 131 and the bottom plate 11 , and a fourth cavity is formed between the second longitudinal beam 132 and the bottom plate 11 .

[0058] In this way, after a collision of the vehicle, the collision energy of the front subframe 1 can be released through the collapse of the first cavity, the second cavity, the third cavity and the fourth cavity, thereby improving the anti-collision performance of the vehicle and further improving the safety of the vehicle during driving.

[0059] like Fig. 9 As shown, the front subframe 1 further includes a plurality of reinforcing plates 16 , which are disposed between the longitudinal beam 13 and the bottom plate 11 , so that the structural strength of the front subframe 1 can be improved, thereby improving the structural strength of the vehicle.

[0060] like Figure 1 As shown, a plurality of cross beams 12 and a plurality of longitudinal beams 13 are arranged to form an avoidance area 17, and the avoidance area 17 is used for after-sales maintenance personnel to pass through so as to perform maintenance on after-sales fault points.

[0061] The front subframe 1 also has a liquid leakage hole and an air leakage hole to prevent the front subframe 1 from accumulating liquid or holding air during the electrophoresis process, thereby preventing poor electrophoresis and improving the anti-corrosion effect of the front subframe 1 .

[0062] The front subframe assembly provided by the embodiment of the present disclosure will be further described below in conjunction with the accompanying drawings.

[0063] In some embodiments, in combination Figures 2 to 4 As shown, the cross section of the protrusion 211 is circular.

[0064] The cross section of the protrusion 211 is circular, that is, the protrusion 211 is a truncated cone structure. In this way, on the one hand, the first sleeve 21 and the second sleeve 22 can be positioned more conveniently; on the other hand, when the protrusion 211 abuts against the inner recess 221, the protrusion 211 is subjected to a relatively uniform force in all directions, thereby improving the stability of the abutment between the first sleeve 21 and the second sleeve 22.

[0065] In other embodiments, in combination Figures 5 to 7 As shown, the cross section of the protrusion 211 is oval.

[0066] Among them, an oblong circle refers to a closed figure formed by dividing a circle into two semicircular arcs through the center of the circle and translating them in opposite directions, and connecting the end points of the two semicircular arcs with two equal-length parallel lines.

[0067] In this way, when the first connecting member 31 enters the protrusion 211, the first connecting member 31 can move along the parallel lines of the oval circle, so that the first connecting member 31 can be more conveniently inserted into the protrusion 211, and then the first connecting member 31 and the first matching member 32 can be conveniently fixedly connected.

[0068] In some embodiments, Figure 1 As shown, the sleeve assembly 2 includes two first sleeves 21 and two second sleeves 22. The front subframe 1 also includes two upper plates 14, one of which is connected to one end of the first cross beam 121, and the other upper plate 14 is connected to the other end of the first cross beam 121, and the two upper plates 14 are both connected to the bottom plate 11, the two first sleeves 21 are respectively connected to the two upper plates 14, and are both connected to the bottom plate 11, and the second sleeves 22 are respectively sleeved on the outside of the protrusions 211 of the two first sleeves 21.

[0069] In this way, the two first sleeves 21 can be fixed by providing two upper plates 14 , so that the two upper plates 14 can be fixedly connected without drilling holes in the cross beam 12 .

[0070] Optionally, in the two first sleeves 21 , the cross section of the protrusion 211 of one sleeve is circular, and the cross section of the protrusion 211 of the other sleeve is oval.

[0071] In this way, accurate positioning of the front subframe assembly and the vehicle body is ensured while over-positioning is avoided, thereby reducing the difficulty of assembly positioning.

[0072] Further, such as Figure 1 As shown, a fifth cavity is formed between one of the upper plates 14 and the bottom plate 11, a sixth cavity is formed between the other upper plate 14 and the floor, and two first sleeves 21 are fixed in the fifth cavity and the sixth cavity respectively.

[0073] In this way, after a vehicle collision occurs, the collision energy of the front subframe 1 can be released at the first bushing 21 through the collapse of the fifth cavity and the sixth cavity, thereby preventing the first bushing 21 from being damaged by the collision, thereby further improving the safety of the vehicle during driving.

[0074] In some embodiments, the two first sleeves 21 are respectively welded and fixed to the two upper plates 14 , and are both welded and fixed to the bottom plate 11 .

[0075] In this way, a stable connection of the first sleeve 21 can be achieved in a simple manner.

[0076] In some embodiments, the first connecting member 31 is a screw, and the first matching member 32 is a nut.

[0077] In this way, the connection and matching between the first connecting member 31 and the first matching member 32 can be achieved in a more convenient way.

[0078] Optionally, the first connecting member 31 and the first matching member 32 are made of metal material and are formed by a high-frequency heat treatment process, thereby increasing the hardness of the first connecting member 31 and the first matching member 32 and thus increasing the structural strength of the front subframe assembly at the first connecting member 31 and the first matching member 32 .

[0079] In some embodiments, the second sleeve 22 has an internal thread matched with the first connecting member 31 .

[0080] In this way, the first connecting member 31 is threadedly connected to the second sleeve 22, so that the fastening degree of the first sleeve 21 and the second sleeve 22 can be improved, thereby reducing the possibility of a gap between the protruding portion 211 and the inner recessed portion 221 due to external factors such as shaking during decoration, thereby reducing the possibility of movement between the front subframe 1 and the vehicle body.

[0081] In some embodiments, Figure 1 As shown, the sleeve assembly 2 also includes a third sleeve 23, which is higher than the first sleeve 21 and fixed to the front subframe 1 and abuts against the vehicle body. The connecting assembly 3 also includes a second connecting member 33, which passes through the third sleeve 23 and is fixedly connected to the vehicle body.

[0082] In this way, the front subframe 1 is connected to the vehicle body through the first sleeve 21 and can also be connected to the vehicle body through the third sleeve 23. The first sleeve 21 and the third sleeve 23 are fixedly connected to the vehicle body at different positions and through different connecting parts, so that the front subframe 1 can be supported at multiple positions, thereby improving the stability of supporting the front subframe 1.

[0083] Further, such as Figure 1 As shown, the sleeve assembly 2 includes two third sleeves 23. The front subframe 1 also includes two transition brackets 15, one of which is fixedly connected to one end of the second crossbeam 122, and the other transition bracket 15 is fixedly connected to the other end of the second crossbeam 122. The two transition brackets 15 extend upwardly at an angle, so that the subframe has a butterfly structure. The two third sleeves 23 are fixedly connected to the two transition brackets 15, respectively.

[0084] Optionally, the two transition brackets 15 have a collapse cavity therein, so as to collapse and absorb energy when the vehicle collides, thereby improving the safety performance of the vehicle.

[0085] Optionally, the two transition brackets 15 are both double-layer structures, so that the structural strength of the two transition brackets 15 can be improved, and thus the structural strength of the front subframe 1 can be improved.

[0086] like Figure 8 As shown, the third sleeve 23 has a third through hole 232 therein for the third connecting member to pass through.

[0087] Optionally, the third connecting member is a screw.

[0088] In some embodiments, Figure 8 As shown, the top of the third sleeve 23 has a hobbing structure 231 .

[0089] In this way, under the action of the axial force of the second connecting member 33, the gear rolling structure 231 can be embedded in the body sheet metal, thereby increasing the friction between the third sleeve 23 and the body sheet metal, thereby increasing the anti-slip ability of the third sleeve 23, and further reducing the possibility of the third sleeve 23 moving when subjected to a large horizontal force.

[0090] Optionally, the gear hobbing structure 231 adopts high-frequency heat treatment and nitriding process to improve the hardness and strength of the gear hobbing structure 231 to ensure that the gear hobbing structure 231 can be fully embedded in the body sheet metal under the action of the axial force of the second connecting member 33.

[0091] Based on the same concept, an embodiment of the present disclosure further provides a vehicle, the vehicle comprising the front subframe assembly provided by the first aspect and possible implementations thereof.

[0092] The vehicle adopts the front sub-frame assembly provided by the embodiment of the present disclosure, and the cross-sectional area of ​​the protrusion 211 gradually decreases in the direction away from the front sub-frame 1, that is, the protrusion 211 has an inclined surface, so that the protrusion 211 and the inner recess 221 can be tightly abutted, and there is almost no installation gap between the two, thereby reducing the possibility of the front sub-frame 1 moving with the vehicle body when subjected to a large horizontal force, thereby reducing the noise of the vehicle during driving. In addition, by adopting such a setting, the installation of the first sleeve 21 and the second sleeve 22 can also be positioned to reduce the difficulty of assembling the first sleeve 21 and the second sleeve 22.

[0093] The present disclosure does not specifically limit the types of vehicles, for example, sedans, buses, trucks, SUVs (Sport Utility Vehicles), etc. The vehicles can be fuel vehicles, BEVs (Blade Electric Vehicles), or HEVs (Hybrid Electric Vehicles), such as extended-range and plug-in vehicles.

[0094] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0095] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0096] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words 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 cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0097] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0098] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0099] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A front subframe assembly, characterized in that: The front subframe assembly comprises a front subframe (1), a sleeve assembly (2) and a connecting assembly (3); The sleeve assembly (2) comprises a first sleeve (21) and a second sleeve (22); the first sleeve (21) is fixedly connected to the front sub-frame (1); the first sleeve (21) is of a symmetrical structure and has a protruding portion (211); the protruding portion (211) protrudes from the front sub-frame (1); the cross-sectional area of ​​the protruding portion (211) gradually decreases in a direction away from the front sub-frame (1); the second sleeve (22) is fixed to the vehicle body (4) and has an inner recess (221) therein that matches the protruding portion (211); the inner recess (221) is used to accommodate the protruding portion (211) and abuts against the protruding portion (211); The connecting assembly (3) comprises a first connecting member (31) and a first matching member (32); the first connecting member (31) passes through the first sleeve (21) and the second sleeve (22) and is connected to the first matching member (32) to fix the front subframe (1) and the vehicle body (4).

2. The front subframe assembly according to claim 1, characterized in that: The cross section of the protrusion (211) is circular.

3. The front subframe assembly according to claim 1, characterized in that: The cross section of the protruding portion (211) is oval in shape.

4. The front subframe assembly according to claim 1, characterized in that: The sleeve assembly (2) comprises two first sleeves (21) and two second sleeves (22); The front subframe (1) comprises a bottom plate (11), a plurality of cross beams (12), a plurality of longitudinal beams (13) and two upper plates (14); the plurality of cross beams (12) and the plurality of longitudinal beams (13) are respectively fixed to the bottom plate (11); the two upper plates (14) are respectively connected to two ends of the same cross beam (12) and are both connected to the bottom plate (11); the two first sleeves (21) are respectively connected to the two upper plates (14) and are both connected to the bottom plate (11); and the second sleeves (22) are respectively sleeved on the outside of the protruding portions (211) of the two first sleeves (21).

5. The front subframe assembly according to claim 4, characterized in that: The two first sleeves (21) are respectively welded and fixed to the two upper plates (14), and are both welded and fixed to the bottom plate (11).

6. The front subframe assembly according to claim 1, characterized in that: The sleeve assembly (2) further comprises a third sleeve (23), wherein the third sleeve (23) is higher than the first sleeve (21), is fixed to the front subframe (1), and abuts against the vehicle body (4); The connecting assembly (3) further comprises a second connecting member (33), wherein the second connecting member (33) passes through the third sleeve (23) and is fixedly connected to the vehicle body (4).

7. The front subframe assembly according to claim 6, characterized in that: The top of the third sleeve (23) has a hobbing structure (231).

8. The front subframe assembly according to any one of claims 1 to 7, characterized in that: The first connecting member (31) is a screw rod, and the first matching member (32) is a nut.

9. The front subframe assembly according to claim 8, characterized in that: The second sleeve (22) has an internal thread matched with the first connecting member (31).

10. A vehicle, characterized in that: The vehicle comprises the front subframe assembly according to any one of claims 1-9.

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