Swing arm mounting assembly and vehicle

Abstract

The present invention discloses a swing arm mounting assembly and a vehicle, wherein mounting grooves corresponding to the lower swing arm are provided at both ends of the swing arm mounting assembly along the length direction, and the cross section of the swing arm mounting assembly is formed by multiple first arc segments, and the first height-to-width ratios of two adjacent first arc segments are not equal, and the first height-to-width ratio is the ratio of the sagittal height of the first arc segment to the chord length of the first arc segment. Among them, the cross section of the swing arm mounting assembly is composed of multiple arc segments, so that the cross-sectional structure of the swing arm mounting assembly is like a "snail shell" structure. By utilizing the characteristics of the snail shell having high structural strength, the structural strength of the swing arm mounting assembly can be effectively improved, and the weight can be reduced. In addition, the height-to-width ratios of the multiple arc segments are not equal, so that the multiple arc segments have different modal frequencies. When the tire vibration excitation and the road vibration are transmitted to the swing arm mounting assembly position through the frame, the vibration frequency of the multiple arc segments can be used to absorb the vibration to avoid resonance.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a swing arm mounting assembly and a vehicle. Background Art

[0002] The rear subframe of a car is an important part of the chassis. Its structure, stiffness and strength have a great impact on the durability, comfort and handling of the whole vehicle. Among them, the rear subframe mainly bears tire load and motion excitation. The strength of the rear subframe lower arm mounting point will directly affect the transmission of tire excitation to the body and cause vibration and noise problems of the whole vehicle. At the same time, the vehicle's handling performance also requires the mounting point to have strong stiffness so that there is a good strength foundation during operation.

[0003] In the related art, a plurality of sheet metals and a plurality of support plates are provided on the rear subframe, and a plurality of mounting brackets are provided at the position of the lower control arm mounting point. The sheet metals, the support plates and the mounting brackets are coordinated with each other to improve the rigidity of the mounting point. However, the connection structure between the rear subframe and the lower control arm mounting point is weak in shape, and the structural shape rigidity cannot be effectively utilized to improve the overall installation position and local rigidity, which easily causes noise and vibration problems in the vehicle. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a swing arm mounting assembly, wherein the cross section of the swing arm mounting assembly is designed to be composed of multiple arc sections, and the height-to-width ratios of two adjacent arc sections are different, which can not only improve the structural strength of the swing arm mounting assembly, but also effectively attenuate vibration energy and avoid resonance.

[0005] The present invention also provides a vehicle.

[0006] According to the swing arm mounting assembly of the first aspect embodiment of the present invention, mounting grooves corresponding to the lower swing arm are arranged at both ends of the swing arm mounting assembly along the length direction, and the cross-section of the swing arm mounting assembly is formed by multiple first arc segments, and the first aspect ratios of two adjacent first arc segments are not equal, and the first aspect ratio is the ratio of the sagittal height of the first arc segment to the chord length of the first arc segment.

[0007] According to the swing arm mounting assembly of the embodiment of the present invention, the cross section of the swing arm mounting assembly is composed of multiple first arc segments, so that the cross section of the swing arm mounting assembly is shaped like a "snail shell" structure. By utilizing the characteristics of the snail shell having high structural strength, the structural strength of the swing arm mounting assembly can be effectively improved and the weight can be reduced. In addition, the first height-to-width ratios of the multiple first arc segments are not equal, so that the multiple first arc segments have different modal frequencies. When the tire vibration excitation and the road vibration are transmitted to the swing arm mounting assembly position through the frame during vehicle driving, the vibration frequency of the multiple first arc segments can be used to absorb the vibration, effectively attenuate the vibration energy, and avoid resonance.

[0008] According to some embodiments of the present invention, a difference in the first aspect ratio between two adjacent first arc segments is h1, and h1 satisfies the relationship: h1≥0.01.

[0009] According to some embodiments of the present invention, the multiple first arc segments include: at least one second arc segment and at least two third arc segments, the upper side or the lower side of the cross-section is formed by the second arc segment, the front and rear sides of the cross-section are formed by the third arc segment, and the difference in the first height-to-width ratio of the two third arc segments arranged opposite to each other is h2, and h2 satisfies the relationship: h2≥0.01.

[0010] According to some embodiments of the present invention, a plurality of fourth arc segments are respectively provided on the upper side and the lower side of the swing arm mounting assembly along the length direction, and the second aspect ratios of two adjacent fourth arc segments along the length direction are not equal, and the second aspect ratio is the ratio of the sagittal height of the fourth arc segment to the chord length of the fourth arc segment, and the difference in the second aspect ratios of two adjacent fourth arc segments along the length direction is h3, and h3 satisfies the relationship: h3≥0.05.

[0011] According to some embodiments of the present invention, the projection shape of the swing arm mounting assembly on the lower surface is an arch and the middle part of the arch bulges backward, the third aspect ratio of the arch is h4, the third aspect ratio is the ratio of the arrow height of the arch to the chord length of the arch, and h4 satisfies the relationship: 0.02≤h4≤0.04.

[0012] According to some embodiments of the present invention, the swing arm mounting assembly includes: a swing arm mounting piece and a plurality of reinforcing plates, a cavity is formed in the swing arm mounting piece, and the plurality of reinforcing plates are spaced apart and arranged in the cavity.

[0013] According to some embodiments of the present invention, the swing arm mounting component includes: a top plate, a first side plate and a second side plate, the cross-sections of the top plate, the first side plate and the second side plate together form a cross-section of the swing arm mounting assembly, the first side plate and the second side plate are arranged opposite to each other front and back and the top plate is connected to the upper side, and a plurality of reinforcing plates are arranged between the first side plate and the second side plate.

[0014] According to some embodiments of the present invention, the plurality of reinforcing plates include: a first reinforcing plate, a second reinforcing plate and a third reinforcing plate, the first reinforcing plate being arranged at the bottom of the first side plate and the second side plate and being arranged opposite to the top plate, the second reinforcing plate being arranged at one end of the first side plate and the second side plate along the length direction, the third reinforcing plate being arranged at the other end of the first side plate and the second side plate along the length direction, the first reinforcing plate, the second reinforcing plate and the third reinforcing plate together form a triangular arrangement, and the second reinforcing plate and the third reinforcing plate form the mounting groove with the first side plate and the second side plate.

[0015] According to some embodiments of the present invention, the first reinforcing plate, the second reinforcing plate and the third reinforcing plate are all arched, and the middle parts of the arches are all convex toward the inside of the cavity.

[0016] According to some embodiments of the present invention, the third aspect ratio of the first reinforcing plate is different from the third aspect ratios of the second reinforcing plate and the third reinforcing plate, and the third aspect ratio is the ratio of the sagitta of the arch to the chord length of the arch.

[0017] According to some embodiments of the present invention, the swing arm mounting assembly further includes: a reinforcement member, wherein the reinforcement member is connected between the first side plate and the second side plate, and the reinforcement member is a reinforced tubular beam.

[0018] A vehicle according to an embodiment of the second aspect of the present invention comprises: a subframe; and the above-mentioned swing arm mounting assembly, wherein the swing arm mounting assembly is fixedly connected to the subframe.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a perspective view of a swing arm mounting assembly according to an embodiment of the present invention;

[0022] Figure 2is a cross-sectional view of a swing arm mounting assembly according to an embodiment of the present invention;

[0023] Figure 3 is a front view of a swing arm mounting assembly according to an embodiment of the present invention;

[0024] Figure 4 is a top view of a swing arm mounting assembly according to an embodiment of the present invention;

[0025] Figure 5 is a partial schematic diagram of a swing arm mounting assembly according to an embodiment of the present invention;

[0026] Figure 6 is a schematic structural diagram of a reinforcement plate according to an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of a first aspect ratio of a first arc segment according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 100. Swing arm mounting assembly;

[0030] 10. mounting groove; 20. first arc segment; 21. second arc segment; 22. third arc segment; 30. fourth arc segment; 40. swing arm mounting member; 41. top plate; 42. first side plate; 43. second side plate; 50. first reinforcing plate; 52. second reinforcing plate; 53. third reinforcing plate; 60. cavity; 70. reinforcing member;

[0031] 200, subframe; 300, lower arm. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0033] Reference below Figure 1-Figure 7 A swing arm mounting assembly 100 according to an embodiment of the present invention is described.

[0034] like Figure 1-Figure 7 As shown, the swing arm mounting assembly 100 is provided with mounting grooves 10 at both ends along the length direction, and the lower swing arm 300 is installed in the mounting groove 10. The cross section of the swing arm mounting assembly 100 is formed by multiple first arc segments 20, and the first aspect ratios of two adjacent first arc segments 20 are not equal, and the first aspect ratio is the ratio of the sagittal height of the first arc segment to the chord length of the first arc segment.

[0035] Among them, the swing arm mounting assembly 100 is fixedly connected to the subframe 200, and the lower swing arm 300 is respectively installed in the mounting grooves 10 at both ends of the swing arm mounting assembly 100, thereby realizing the connection between the lower swing arm 300 and the subframe 200, thereby ensuring that the subframe 200 and the lower swing arm 300 can bear tire loads and motion excitations.

[0036] In addition, the cross-section of the swing arm mounting assembly 100 is formed by multiple first arc segments 20, so that the cross-sectional structure of the swing arm mounting assembly 100 is shaped like a "snail shell" structure. By utilizing the high strength of the "snail shell", the structural strength of the swing arm mounting assembly 100 can be effectively improved.

[0037] Furthermore, the first aspect ratios of two adjacent first arc segments 20 are not equal, and the first aspect ratio is the ratio of the sagittal height of the first arc segment 20 to the chord length of the first arc segment 20. Figure 7 As shown, the chord length of the first arc segment 20 is the line between the two end points of the first arc segment 20, that is, the chord AB, and the sagittal height of the first arc segment is the line from the center O of the chord AB to the point C that is perpendicular to the first arc segment 20 and intersects with the first arc segment, that is, the height OC. It can be understood that the bending degrees of two adjacent first arc segments 20 are different, so that the two adjacent first arc segments 20 can have different vibration frequencies. When the vehicle is running, when the tire vibration excitation and the road vibration are transmitted to the position of the swing arm mounting assembly 100 through the frame, the vibration frequency of the multiple first arc segments 20 can be used to absorb the vibration, and the swing arm mounting assembly 100 will not generate a large vibration phenomenon.

[0038] Therefore, the cross-section of the swing arm mounting assembly 100 is designed to be formed by multiple first arc segments 20, and adjacent first arc segments 20 have different first aspect ratios. On the one hand, the cross-sectional structural shape of the swing arm mounting assembly 100 can be changed to be like a "snail shell" structure. By utilizing the high strength of the snail shell, the structural strength of the swing arm mounting assembly 100 can be effectively improved and the weight can be reduced. On the other hand, the first arc segments 20 adjacent to each other have different modal frequencies. The local mode of each first arc segment 20 can be used as a vibration absorber to absorb vibration, effectively attenuating the tire vibration excitation and transmission energy, thereby achieving the purpose of reducing the vibration noise in the vehicle and avoiding the problem of vehicle body resonance.

[0039] Specifically, Figure 1 As shown, the X-axis in the vehicle coordinate system is the length direction of the vehicle, that is, the front-to-back direction of the swing arm mounting assembly 100, the Y-axis in the vehicle coordinate system is the width direction of the vehicle, that is, the length direction of the swing arm mounting assembly 100, and the Z-axis in the vehicle coordinate system is the height direction of the vehicle, that is, the up-and-down direction of the swing arm mounting assembly 100.

[0040] like Figure 2 As shown, the difference in the first aspect ratio of two adjacent first arc segments 20 is h1, and h1 satisfies the relationship: h1≥0.01. With such a configuration, the difference in the first aspect ratio of two adjacent first arc segments 20 is within 0.01. On the one hand, the first arc segments 20 adjacent to each other can have different modal frequencies, and no resonance will occur when the tire vibration excitation is transmitted to the swing arm mounting assembly 100, and the vibration energy can be effectively attenuated according to different modal frequencies to reduce the noise inside the vehicle; on the other hand, the difference design between multiple first arc segments can be well met, and the bending degree between the first arc segments adjacent to each other will not differ too much, which can effectively ensure that the swing arm mounting assembly 100 has a strong structural strength and the cross-sectional structural shape has good stability. If the difference in the aspect ratio between two adjacent first arc segments 20 is less than 0.01, so that the modal frequencies between the two first arc segments 20 are close, the vibration attenuation capability of the swing arm mounting assembly 100 will be reduced, and the vehicle body resonance problem cannot be effectively solved; if the difference in the aspect ratio between two adjacent first arc segments 20 is too large, although the vehicle body resonance can be effectively reduced, the bending degree of the two adjacent first arc segments 20 will be greatly different, and there will be partial stress concentration at the connection position between the two adjacent first arc segments 2. When the vehicle driving conditions are relatively harsh and there is obvious vehicle body vibration, it may cause local cracking in the cross section of the swing arm mounting assembly 100.

[0041] Further, the multiple first arc segments 20 include: at least one second arc segment 21 and at least two third arc segments 22, the upper side or the lower side of the cross section is formed by the second arc segment 21, the front and rear sides of the cross section are formed by the third arc segment 22, and the difference of the first height-width ratio of the two third arc segments 22 arranged opposite to each other is h2, and h2 satisfies the relationship: h2≥0.01. In this way, the two third arc segments 22 arranged opposite to each other have a certain symmetry, and the difference of the first height-width ratio of the third arc segments 22 arranged opposite to each other is set to be greater than 0.01, so that the two third arc segments 22 have different modal frequencies. When the tire vibration excitation is transmitted through the lower swing arm 300 to the swing arm mounting assembly 100, the vibration frequencies of the two third arc segments 22 arranged opposite to each other are different, which can effectively avoid the resonance phenomenon, and at the same time, can effectively improve the structural strength of the swing arm mounting assembly 100. In addition, the difference design of the first aspect ratio of two adjacent first arc segments 21 can be combined with the difference design of the first aspect ratio of two relatively set third arc segments 22, which can further improve the anti-resonance ability of the swing arm mounting assembly 100 and enhance the structural strength.

[0042] like Figure 3As shown, the upper and lower sides of the swing arm mounting assembly 100 are each provided with multiple fourth arc segments 30 along the length direction, and the second aspect ratios of two adjacent fourth arc segments 30 along the length direction are not equal, and the second aspect ratio is the ratio of the sagittal height of the fourth arc segment 30 to the chord length of the fourth arc segment 30, and the difference in the second aspect ratios of two adjacent fourth arc segments 30 along the length direction is h3, and h3 satisfies the relationship: h3≥0.05. In this way, multiple fourth arc segments 30 are provided along the length direction of the arm mounting assembly 100 on the upper and lower sides of the swing arm mounting assembly 100, so that the overall structure of the swing arm mounting assembly 100 is like a "saddle" type structure. By utilizing the characteristics of the "saddle" type with high arch structure strength, the structural strength of the swing arm mounting assembly 100 can be effectively improved, and the weight can be reduced at the same time.

[0043] And, the difference of the second aspect ratio of two adjacent fourth arc segments 30 is greater than 0.05. With such a configuration, on the one hand, the fourth arc segments 30 adjacent to each other can have different vibration frequencies, and then the multiple fourth arc segments 30 can have different vibration frequencies, which effectively broadens the vibration frequency range, so that the swing arm mounting assembly 100 will not generate large vibrations, and at the same time, the vibration energy transmitted to the frame by the tire vibration excitation can be effectively attenuated; on the other hand, the bending degrees between the fourth arc segments 30 adjacent to each other are greatly different, so that the upper and lower sides of the swing arm mounting assembly 100 can form a multi-arch structure, and then the swing arm mounting assembly 100 can be formed into a "saddle" type structure as a whole, which effectively enhances the structural strength and prevents it from being torn by external forces under severe working conditions. If the difference in the second aspect ratio between two adjacent fourth arc segments 30 is less than 0.05, the multi-arch "saddle" structure cannot be formed well, and the vibration attenuation capability of the swing arm mounting assembly 100 will be reduced; if the difference in the second aspect ratio between two adjacent fourth arc segments 30 is too large, the bending degrees of the two adjacent fourth arc segments 20 will differ greatly, and under severe working conditions, the connection between the two adjacent fourth arc segments 30 is prone to breakage.

[0044] like Figure 4As shown, the projection of the swing arm mounting assembly 100 on the lower surface is an arch, and the middle part of the arch bulges backwards, and the third aspect ratio of the arch is h4, which is the ratio of the arch height to the chord length of the arch, and h4 satisfies the relationship: 0.02≤h4≤0.04. In this way, the swing arm mounting assembly 100 is an arch structure in the front and rear directions, which can further improve the structural strength of the swing arm mounting assembly 100, thereby better enhancing the connection stiffness between the lower swing arm 300 and the subframe 200, which can effectively reduce the vibration excitation of the tire and improve the reliability and durability between the lower swing arm 300 and the subframe 200. In addition, setting the third aspect ratio of the arch structure between 0.02 and 0.04 can not only ensure the structural strength of the swing arm mounting assembly 100, but also form a good matching design with the torque steering of the vehicle, which is beneficial to the handling stability of the vehicle.

[0045] like Figure 5 and Figure 6 As shown, the swing arm mounting assembly 100 includes: a swing arm mounting member 40 and a plurality of reinforcing plates 50. A cavity 60 is formed in the swing arm mounting member 40, and the plurality of reinforcing plates 50 are arranged at intervals in the cavity 60. In other words, the interior of the swing arm mounting member 40 is a cavity 60, and the plurality of reinforcing plates 50 are arranged at intervals in the cavity 60. Such an arrangement can not only play a role in supporting the swing arm mounting member 40 and ensure the structural strength of the swing arm mounting assembly 100, but also can effectively reduce the weight, which is conducive to manufacturing and cost saving.

[0046] The swing arm mounting member 40 includes: a top plate 41, a first side plate 42 and a second side plate 43. The cross sections of the top plate 41, the first side plate 42 and the second side plate 43 together form a cross section of the swing arm mounting assembly 100. The first side plate 42 and the second side plate 43 are arranged opposite to each other front and back, and the top plate 41 is connected to the upper side. A plurality of reinforcing plates 50 are arranged between the first side plate 42 and the second side plate 43. In other words, the first side plate 42 and the second side plate 43 are connected to the top plate 41 to form the swing arm mounting member 40 having a cavity 60, and a plurality of reinforcing plates 50 are arranged between the first side plate 42 and the second side plate 43. In this way, the "saddle" type structure formed by the top plate 41, the first side plate 42 and the second side plate 43 together and the supporting function of the plurality of reinforcing plates 50 can effectively improve the overall strength of the swing arm mounting assembly 100.

[0047] Furthermore, the cross section formed by the top plate 41, the first side plate 42 and the second side plate 43 is composed of multiple sections of the first arc 20, so that the cross-sectional structure is shaped like a "snail shell" structure. By utilizing the high strength of the snail shell, the structural strength of the swing arm mounting component 40 can be effectively improved, thereby enhancing the connection stiffness between the lower swing arm 300 and the subframe 200, so that the tire vibration excitation is transmitted through the buffer of the swing arm mounting component 40, which greatly reduces the vibration energy of the vehicle body.

[0048] Furthermore, the plurality of reinforcing plates include: a first reinforcing plate 50, a second reinforcing plate 52 and a third reinforcing plate 53, the first reinforcing plate 50 is arranged at the bottom of the first side plate 42 and the second side plate 43 and is arranged opposite to the top plate 41, the second reinforcing plate 52 is arranged at one end of the first side plate 42 and the second side plate 43 along the length direction, the third reinforcing plate 53 is arranged at the other end of the first side plate 42 and the second side plate 43 along the length direction, and the first reinforcing plate 50, the second reinforcing plate 52 and the third reinforcing plate 53 together form a triangular arrangement, and the second reinforcing plate 52 and the third reinforcing plate 53 form a mounting groove 10 with the first side plate 42 and the second side plate 43. In this way, the first reinforcing plate 50, the second reinforcing plate 52 and the third reinforcing plate 53 form a triangular arrangement in the cavity 60, and the structural strength of the swing arm mounting assembly 100 is effectively guaranteed by utilizing the characteristics of the triangle having high stability and high structural strength, thereby improving the connection rigidity between the lower swing arm 300 and the subframe 200.

[0049] Furthermore, the first reinforcing plate 50, the second reinforcing plate 52 and the third reinforcing plate 53 are all in an arch shape, and the middle part of the arch is protruded toward the cavity 60. How to set it up, by utilizing the structural strength of the arch 51, the structural strength of the reinforcing plate 50 itself can be improved, and combined with the triangular structure of the three reinforcing plates 50, the overall structural strength of the swing arm mounting assembly 100 can be better improved, and when the lower swing arm 300 moves relative to the subframe 200, it can have good stability and reliability.

[0050] Furthermore, the third aspect ratio of the first reinforcing plate 50 is different from the third aspect ratios of the second reinforcing plate 52 and the third reinforcing plate 53, and the third aspect ratio is the ratio of the sagittal height of the arch to the chord length of the arch. It can be understood that the curvature of the first reinforcing plate 50 located in the middle is different from the curvature of the second reinforcing plate 52 and the third reinforcing plate 53 located on both sides, so that the vibration frequencies of the three reinforcing plates 50 can be different, realizing the frequency-approaching design, effectively avoiding the resonance phenomenon, and reducing the vibration sensitivity.

[0051] Moreover, the thickness of the reinforcing plates 50 on both sides is different. In this way, after the reinforcing plates 50 on both sides are welded together with the first side plate 42 and the second side plate 43, the stiffness of the left and right ends of the swing arm mounting assembly 100 is different, thereby realizing the frequency-limiting design of the swing arm mounting assembly 100 and effectively reducing the vibration sensitivity.

[0052] In addition, the third aspect ratios of the second reinforcing plates 52 and the third reinforcing plates 53 on both sides are the same, that is, the arch structures of the second reinforcing plates 52 and the third reinforcing plates 53 on both sides can have the same curvature, which can reduce the production cost of the reinforcing plates, and can well support the swing arm mounting component 40, thereby ensuring the structural strength of the swing arm mounting assembly 100, and can further reduce the vibration sensitivity of the swing arm mounting assembly 100.

[0053] In addition, the swing arm mounting assembly 100 further includes: a reinforcement member 70, the reinforcement member 70 is connected between the first side plate 42 and the second side plate 43, and the reinforcement member 70 is a reinforcement tube beam. That is to say, the reinforcement member 70 is connected between the first side plate 42 and the second side plate 43, and the reinforcement member 70 can be a reinforcement tube beam. In this way, since the cavity 60 of the swing arm mounting member 40 is relatively weak inside, the reinforcement tube beam has a strong structural strength characteristic, and the strength of the weak area of ​​the cavity 60 can be effectively improved, thereby effectively ensuring the connection stiffness between the lower swing arm 300 and the subframe 200. Specifically, the reinforcement tube beam can be set in the middle position of the cavity 60, and the columnar structure has a high structural strength characteristic, so as to effectively improve the strength of the weakest area in the middle.

[0054] The vehicle according to the embodiment of the second aspect of the present invention comprises: a subframe 200; and the swing arm mounting assembly 100 described above, wherein the swing arm mounting assembly 100 is fixedly connected to the subframe 200.

[0055] Therefore, the cross-section of the swing arm mounting assembly 100 is designed to be composed of multiple first arcs 20, and adjacent first arcs 20 have different first aspect ratios. On the one hand, the cross-sectional structural shape of the swing arm mounting assembly 100 can be changed to be like a "snail shell" structure. By utilizing the high strength of the snail shell, the structural strength of the swing arm mounting assembly 100 can be effectively improved and the weight can be reduced. On the other hand, the first arcs 20 adjacent to each other have different modal frequencies. The local mode of each first arc 20 can be used as a vibration absorber to absorb vibration, effectively attenuating the energy transferred by the engine-excited vibration, thereby achieving the purpose of reducing the vibration noise in the vehicle and avoiding the problem of vehicle body resonance.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0058] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A swing arm mounting assembly, characterized in that: The swing arm mounting assembly is provided with mounting grooves corresponding to the lower swing arm at both ends along the length direction, the cross-section of the swing arm mounting assembly is formed by multiple first arc segments, and the first aspect ratios of two adjacent first arc segments are not equal, and the first aspect ratio is the ratio of the sagittal height of the first arc segment to the chord length of the first arc segment; the upper side and the lower side of the swing arm mounting assembly are respectively provided with multiple fourth arc segments along the length direction, and the second aspect ratios of two adjacent fourth arc segments along the length direction are not equal, and the second aspect ratio is the ratio of the sagittal height of the fourth arc segment to the chord length of the fourth arc segment.

2. The swing arm mounting assembly according to claim 1, characterized in that: The difference in first aspect ratio between two adjacent first arc segments is h1, and h1 satisfies the relationship: h1≥0.

01.

3. The swing arm mounting assembly according to claim 1, characterized in that: The multiple first arc segments include: at least one second arc segment and at least two third arc segments, the upper side or the lower side of the cross section is formed by the second arc segment, the front and rear sides of the cross section are formed by the third arc segment, and the difference in the first height-to-width ratio of the two third arc segments arranged opposite to each other is h2, and h2 satisfies the relationship: h2≥0.

01.

4. The swing arm mounting assembly according to claim 1, characterized in that: The difference in the second aspect ratio between two adjacent fourth arc segments along the length direction is h3, and h3 satisfies the relationship: h3≥0.

05.

5. The swing arm mounting assembly according to claim 1, characterized in that: The projection shape of the swing arm mounting assembly on the lower surface is an arch and the middle part of the arch bulges backward. The third aspect ratio of the arch is h4, which is the ratio of the arrow height of the arch to the chord length of the arch. h4 satisfies the relationship: 0.02≤h4≤0.

04.

6. The swing arm mounting assembly according to claim 1, characterized in that: The swing arm mounting assembly comprises: a swing arm mounting piece and a plurality of reinforcing plates. A cavity is formed in the swing arm mounting piece, and the plurality of reinforcing plates are arranged in the cavity at intervals.

7. The swing arm mounting assembly according to claim 6, characterized in that: The swing arm mounting component includes: a top plate, a first side plate and a second side plate, the cross sections of the top plate, the first side plate and the second side plate together form a cross section of the swing arm mounting assembly, the first side plate and the second side plate are arranged opposite to each other front and back and the top plate is connected to the upper side, and a plurality of reinforcing plates are arranged between the first side plate and the second side plate.

8. The swing arm mounting assembly according to claim 7, characterized in that: The multiple reinforcing plates include: a first reinforcing plate, a second reinforcing plate and a third reinforcing plate, the first reinforcing plate is arranged at the bottom of the first side plate and the second side plate and is arranged opposite to the top plate, the second reinforcing plate is arranged at one end of the first side plate and the second side plate along the length direction, and the third reinforcing plate is arranged at the other end of the first side plate and the second side plate along the length direction, the first reinforcing plate, the second reinforcing plate and the third reinforcing plate together form a triangular arrangement, and the second reinforcing plate and the third reinforcing plate form the installation groove with the first side plate and the second side plate.

9. The swing arm mounting assembly according to claim 8, characterized in that: The first reinforcing plate, the second reinforcing plate and the third reinforcing plate are all arched, and the middle parts of the arches are all convex toward the inside of the cavity.

10. The swing arm mounting assembly according to claim 9, characterized in that: The third aspect ratio of the first reinforcing plate is different from the third aspect ratios of the second reinforcing plate and the third reinforcing plate, and the third aspect ratio is a ratio of the sagittal height of the arch to the chord length of the arch.

11. The swing arm mounting assembly according to claim 7, characterized in that: Also includes: A reinforcement member, wherein the reinforcement member is connected between the first side plate and the second side plate, and the reinforcement member is a reinforced tube beam.

12. A vehicle, characterized in that: include: Subframe; The swing arm mounting assembly according to any one of claims 1-11, wherein the swing arm mounting assembly is fixedly connected to the subframe.

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