Control arm mounting structure, subframe and vehicle

Abstract

The present invention provides a control arm mounting structure for mounting a connecting shaft at the front end of a control arm. The control arm mounting structure includes a vehicle body connecting bracket and a mounting seat. The vehicle body connecting bracket is connected to the longitudinal beam of the subframe. The upper portion of the vehicle body connecting bracket is connected to the vehicle body, and the lower portion has a first mounting portion. The mounting seat is connected to the longitudinal beam of the subframe and the vehicle body connecting bracket, or to one of the two. The mounting seat has a second mounting portion connected to the connecting shaft. The control arm mounting structure provided by the present invention combines the vehicle body connecting bracket and the mounting seat to provide a first mounting portion and a second mounting portion for mounting the connecting shaft of the control arm. The vehicle body connecting bracket and the mounting seat can be arranged separately or integrally formed, so that the vehicle body connecting bracket integrates the dual functions of connecting the vehicle body and the control arm, which helps to improve the structural strength and rigidity of the control arm mounting position, reduce the sensitivity of vibration transmission, and improve the comfort of passengers.

Description

Technical Field

[0001] The present invention belongs to the technical field of control arm installation, and more particularly, relates to a control arm installation structure, a subframe and a vehicle. Background Art

[0002] The suspension system connects the wheels and subframe, transmitting road excitation (force, vibration, etc.) to the vehicle body through the subframe during driving, thereby reducing the transmission of vibration and noise into the vehicle interior. As the "bridge" connecting the suspension system and the vehicle body, the reliability of the connection between the subframe and the suspension control arm, as well as its vibration isolation performance, is a key factor in determining the reliability and NVH levels of the entire vehicle.

[0003] In the prior art, the subframe longitudinal beam is typically configured as a "J"-shaped bracket or two opposing "C"-shaped brackets to mount the control arm. While this structure meets the basic requirements for strength and durability required for assembling the control arm, its dynamic stiffness (the ability of the structure to resist deformation under specific dynamic excitation) is often poor, making it unable to effectively suppress the vibration and noise of the control arm from being transmitted into the vehicle. Summary of the Invention

[0004] The object of the present invention is to provide a control arm mounting structure, a subframe and a vehicle, which can integrate the control arm mounting point on the vehicle body connecting bracket, thereby improving the dynamic stiffness of the mounting structure and improving the NVH performance of the vehicle.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a control arm mounting structure for mounting a connecting shaft at the front end of the control arm, the control arm mounting structure comprising:

[0006] A body connecting bracket is connected to the subframe longitudinal beam, the upper portion of the body connecting bracket extends outward and upward and is connected to the body, and the lower portion of the body connecting bracket extends outward and downward and has a first mounting portion connected to the connecting shaft;

[0007] The mounting seat is connected to the auxiliary frame longitudinal beam and the vehicle body connecting bracket, or to one of the auxiliary frame longitudinal beam and the vehicle body connecting bracket. The mounting seat is located on the front side of the vehicle body connecting bracket and has a second mounting portion connected to the connecting shaft.

[0008] In one possible implementation, the vehicle body connecting bracket has a first mounting plate extending obliquely downwardly outside the vehicle body, the first mounting plate forming a first mounting portion, and the mounting seat has a second mounting plate extending obliquely downwardly outside the vehicle body, the second mounting plate forming a second mounting portion, and the first mounting plate and the second mounting plate are respectively provided with mounting holes corresponding to the two side shaft ends of the connecting shaft.

[0009] In some embodiments, an angle α is formed between the first mounting plate and the XZ plane, and an angle α is also formed between the second mounting plate and the XZ plane, and α is less than 60°.

[0010] In one possible implementation, in the Y direction of the vehicle body, the vehicle body connecting bracket corresponds horizontally to the cross beam in the subframe, and an inner lining plate is provided inside the vehicle body connecting bracket, extending obliquely downward toward one side of the cross beam in the subframe, and the lower edge of the inner lining plate is connected to the top wall of the cross beam in the subframe.

[0011] In some embodiments, the vehicle body connection bracket includes:

[0012] A front enclosure panel connected to the top and outer side walls of the subframe longitudinal rails;

[0013] A rear enclosing plate is connected to the top wall and the outer side wall of the auxiliary frame longitudinal beam, and the rear enclosing plate and the front enclosing plate enclose a hollow cavity;

[0014] The front enclosing plate or the rear enclosing plate is the first mounting plate, or the front enclosing plate and the rear enclosing plate together form the first mounting plate, and the lining plate is connected to the inner walls of the front enclosing plate and the rear enclosing plate.

[0015] In some embodiments, the upper end of the vehicle body connecting bracket is connected to a connecting tube extending in the up and down directions, the peripheral walls of the connecting tube are respectively connected to the front enclosure panel and the rear enclosure panel, and the top of the connecting tube is provided with a connecting plate connected to the vehicle body, and a connecting hole is provided on the connecting plate.

[0016] In one possible implementation, the vehicle body connection bracket and the mounting seat are spaced apart along the X-direction of the vehicle body, and the control arm mounting structure further includes a reinforcing plate connected to the bottom of the subframe longitudinal beam and located on the outside of the subframe longitudinal beam. The reinforcing plate extends along the direction of the subframe longitudinal beam and is respectively connected to the lower ends of the vehicle body connection bracket and the mounting seat. The reinforcing plate is used to support the bottom of the vehicle body connection bracket and the mounting seat.

[0017] In one possible implementation, the mounting seat and the vehicle body connecting bracket respectively have a cavity opening downward, and the outer edge of the reinforcing plate is connected to a first support portion and a second support portion extending outward and upward at an angle, the first support portion is used to support in the cavity of the vehicle body connecting bracket, and the second support portion is used to support in the cavity of the mounting seat.

[0018] The solution shown in the embodiment of the present application, compared with the prior art, provides a control arm mounting structure in which the vehicle body connection bracket and the mounting seat are combined to provide a first mounting portion and a second mounting portion for mounting the connecting shaft of the control arm. The vehicle body connection bracket and the mounting seat can be arranged separately or integrally formed. The first mounting portion and the second mounting portion inclined toward the outside and bottom of the vehicle body are used to form a structural avoidance between the control arm and the vehicle body connection bracket and the upper component, so that the vehicle body connection bracket integrates the dual functions of connecting the vehicle body and the control arm, which helps to improve the structural strength and rigidity of the control arm mounting position, reduces the sensitivity of vibration transmission, and improves the comfort of passengers.

[0019] The present invention also provides a subframe including a control arm mounting structure. The subframe combines a vehicle body connection bracket and a mounting base to provide a first mounting portion and a second mounting portion for mounting a connecting shaft of the control arm. The vehicle body connection bracket and the mounting base can be separate or integrally formed, allowing the vehicle body connection bracket to integrate the dual functions of connecting to the vehicle body and the control arm, thereby improving the structural strength and rigidity of the control arm mounting location and reducing the sensitivity of vibration transmission.

[0020] The present invention also provides a vehicle including a subframe. The subframe utilizes a body connection bracket to achieve dual functions of connecting to the vehicle body and the control arm, thereby improving the structural strength and rigidity of the control arm mounting location, reducing vibration transmission sensitivity, and ensuring both vehicle durability and a comfortable driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic top view of the subframe provided in an embodiment of the present invention;

[0023] Figure 2 For the embodiment of the present invention Figure 1 Schematic diagram of the partial cross-sectional structure of AA;

[0024] Figure 3 For the embodiment of the present invention Figure 1 Schematic diagram of the partial cross-section structure of the middle BB;

[0025] Figure 4 For the embodiment of the present invention Figure 1 A structural diagram of the middle subframe from another angle;

[0026] Figure 5 For the embodiment of the present invention Figure 4 A partial enlarged structural diagram of the middle subframe at another angle;

[0027] Figure 6 For the embodiment of the present invention Figure 1 Schematic diagram of the structure of the middle reinforcement plate from another angle;

[0028] Figure 7 For the embodiment of the present invention Figure 1 A schematic diagram of the structure of the mid-body connecting bracket from another angle;

[0029] Figure 8 For the embodiment of the present invention Figure 1 Schematic diagram of the local structure after the center control arm is installed.

[0030] Among them, the reference numerals in the figures are:

[0031] 1. Body connecting bracket; 11. Front enclosure panel; 12. Rear enclosure panel; 13. Inner lining panel; 14. First mounting plate; 15. Pre-installed nuts; 2. Mounting seat; 21. Second mounting plate; 3. Reinforcement plate; 31. First support portion; 32. Second support portion; 33. Reinforcement rib; 4. Connecting tube; 41. Connecting plate; 42. Connecting hole; 43. Guide hole; 44. Clearance hole; 5. Control arm; 51. Connecting shaft; 6. Subframe; 61. Subframe longitudinal beam; 62. Subframe front crossbeam; 63. Subframe middle crossbeam; 64. Subframe rear crossbeam. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In the claims, specification and the above-mentioned drawings of the present invention, the terms "front" and "rear" are the same as the front-to-back direction of the vehicle body, "left" and "right" are the same as the left-to-right direction of the vehicle body, and "up" and "down" are the same as the up-down direction of the vehicle body; the term "inside" refers to the direction toward the center axis of the vehicle body, and the term "outside" refers to the direction away from the center axis of the vehicle body, wherein the center axis of the vehicle body is parallel to the front-to-back direction of the vehicle body. The remaining directional words, unless otherwise expressly defined, such as the use of terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "clockwise", "counterclockwise", "high", "low", etc. to indicate directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so they cannot be understood as limiting the specific protection scope of the present invention.

[0034] Please also refer to Figures 1 to 8 The control arm mounting structure, subframe 6, and vehicle provided by the present invention are now described. The control arm mounting structure is used to mount the connecting shaft 51 at the front end of the control arm 5. The control arm mounting structure includes a vehicle body connecting bracket 1 and a mounting seat 2. The vehicle body connecting bracket 1 is connected to the subframe longitudinal beam 61. The upper portion of the vehicle body connecting bracket 1 extends outward and upward and is connected to the vehicle body. The lower portion of the vehicle body connecting bracket 1 extends outward and downward and has a first mounting portion connected to the connecting shaft 51. The mounting seat 2 is connected to the subframe longitudinal beam 61 and the vehicle body connecting bracket 1, or to one of the subframe longitudinal beam 61 and the vehicle body connecting bracket 1. The mounting seat 2 is located on the front side of the vehicle body connecting bracket 1 and has a second mounting portion connected to the connecting shaft 51.

[0035] Compared with the prior art, the control arm mounting structure provided in this embodiment combines the vehicle body connection bracket 1 and the mounting seat 2 to provide a first mounting portion and a second mounting portion for mounting the connecting shaft 51 of the control arm 5. The vehicle body connection bracket 1 and the mounting seat 2 can be arranged separately or integrally formed. The first mounting portion and the second mounting portion inclined toward the outside and bottom of the vehicle body are used to form a structural avoidance between the control arm 5 and the vehicle body connection bracket 1 and the upper component, so that the vehicle body connection bracket 1 integrates the dual functions of connecting the vehicle body and the control arm 5, which helps to improve the structural strength and rigidity of the installation position of the control arm 5, reduces the sensitivity of vibration transmission, and improves the comfort of passengers.

[0036] It should be noted that the control arm 5 needs to be installed separately at the front and rear ends. The above structure is designed for the connecting shaft 51 at the front end of the control arm 5. The ends of the connecting shaft 51 are respectively mounted on the first and second mounting portions. The control arm 5 is provided on the outside of each subframe longitudinal beam 61. The body connection bracket 1 is provided on each subframe longitudinal beam 61, and the mounting base 2 is provided on each subframe longitudinal beam 61.

[0037] In this embodiment, the vehicle body connection bracket 1 not only connects the subframe to the vehicle body but also integrates the connection with the control arm 5. This not only effectively reduces the number of parts, saving development costs, but also conserves under-vehicle space. Furthermore, this structure avoids welding deformation caused by multiple parts, ensuring the dimensional accuracy of the control arm 5's installation position.

[0038] More importantly, the installation position of the connecting shaft 51 of the control arm 5 is selected to be set on the vehicle body connecting bracket 1, which helps to shorten the distance between the front installation position of the control arm 5 (that is, the position of the connecting shaft 51, which is also the load input point) and the vehicle body installation point (that is, the vehicle body connecting bracket 1 and the vehicle body connection point, which is a fixed point here), helps to improve the structural stiffness of the front installation position of the control arm 5 and reduce the vibration transmission sensitivity.

[0039] The mounting base 2 and the vehicle body connecting bracket 1 may be formed in one piece or may be separately provided.

[0040] Specifically, when the mounting seat 2 and the vehicle body connecting bracket 1 adopt an integrally formed structure, the length of the two covering the vehicle body Y upward should meet the length requirement for installation at the end of the connecting shaft 51, ensuring that the setting positions of the first mounting part and the second mounting part meet the installation requirements of the connecting shaft 51.

[0041] As a parallel embodiment, the mounting seat 2 can also be independently set up from the vehicle body connecting bracket 1, and the two are arranged at intervals in the upward direction of the vehicle body Y. The mounting seat 2 is connected to the outer side of the subframe longitudinal beam 61, and a first mounting portion is provided on the vehicle body connecting bracket 1, and a second mounting portion is provided on the mounting seat 2 to respectively install the two ends of the connecting shaft 51.

[0042] Furthermore, the mounting base 2 can be connected to the vehicle body connecting bracket 1 at the same time as being connected to the subframe longitudinal beam 61 , thereby further improving the structural strength of the mounting position of the control arm 5 while meeting the mounting requirements of the control arm 5 .

[0043] In a possible implementation, the above-mentioned characteristic vehicle body connection bracket 1 is adopted as follows Figures 3 to 5 as well as Figure 7 See the structure shown. Figures 3 to 5 as well as Figure 7The vehicle body connecting bracket 1 has a first mounting plate 14 extending obliquely downwardly outside the vehicle body, and the first mounting plate 14 forms a first mounting portion. The mounting seat 2 has a second mounting plate 21 extending obliquely downwardly outside the vehicle body, and the second mounting plate 21 forms a second mounting portion. The first mounting plate 14 and the second mounting plate 21 are respectively provided with mounting holes corresponding to the two side shaft ends of the connecting shaft 51.

[0044] In this embodiment, a first mounting portion is formed by utilizing a first mounting plate 14 formed on the vehicle body connecting bracket 1. The first mounting plate 14 gradually tilts downward from the side close to the center axis of the vehicle body to the side away from the center axis of the vehicle body, providing a mounting plane tilted outward and downward for the installation of the control arm 5, thereby forming sufficient avoidance of the vehicle body connecting bracket 1 and the upper structure, facilitating the layout of the mounting structure, and improving space utilization.

[0045] The mounting holes provided on the first mounting plate 14 and the second mounting plate 21 are used to correspond to the shaft holes on both side ends of the connecting shaft 51 , and are reliably connected through connecting pieces to achieve effective installation of the shaft ends on both side ends of the connecting shaft 51 .

[0046] On this basis, to enhance ease of installation, a pre-installed nut 15 is pre-welded to the bottom of the first mounting plate 14. The pre-installed nut 15 communicates with the mounting hole in the first mounting plate 14. When installing the connecting shaft 51, the axial hole at the rear end of the connecting shaft 51 is aligned with the mounting hole in the first mounting plate 14. A bolt or stud, or other fastener, is then threaded through the axial and mounting holes, and then threaded into the pre-installed nut 15 to effectively secure the rear end of the connecting shaft 51. Similarly, the axial hole at the front end of the connecting shaft 51 is connected to the corresponding mounting hole in the second mounting plate 21, ensuring reliable installation of the control arm 5. This structure is quick and easy to operate, improving assembly efficiency.

[0047] In some embodiments, the first mounting plate 14 and the second mounting plate 21 are configured as follows: Figures 2 to 3 See the structure shown. Figures 2 to 3 An angle α is formed between the first mounting plate 14 and the XZ plane, and an angle α is also formed between the second mounting plate 21 and the XZ plane, and α is less than 60°.

[0048] In this embodiment, the first mounting plate 14 and the second mounting plate 21 each form an angle α with the XZ plane. The value of α is selected within a range of less than 60°, so that the outward and downward inclination of the first mounting plate 14 and the second mounting plate 21 meets the requirement of avoiding overhead components. This selection of inclination angles causes the axis of the pre-installed nut 15 to extend upward and outward from bottom to top, preventing the upper structure of the vehicle body connecting bracket 1 from obstructing the installation position of the control arm 5. This provides ample assembly space for the control arm 5 and improves operational convenience.

[0049] In a possible implementation, the above-mentioned characteristic vehicle body connection bracket 1 is adopted as follows Figure 1 、 Figures 3 to 5 See the structure shown. Figure 1 、 Figures 3 to 5 In the upward direction of the vehicle body Y, the vehicle body connecting bracket 1 is horizontally corresponding to the sub-frame middle cross beam 63. The interior of the vehicle body connecting bracket 1 is provided with an inner lining plate 13 extending obliquely downward to one side of the sub-frame middle cross beam 63. The lower edge of the inner lining plate 13 is connected to the top wall of the sub-frame middle cross beam 63.

[0050] In this embodiment, the vehicle body connecting bracket 1 can overlap the subframe longitudinal beam 61 and the subframe center cross beam 63 at the same time, thereby strengthening the connection performance between the subframe center cross beam 63 and the subframe longitudinal beam 61, avoiding the cumbersomeness caused by the need to separately design other reinforcement structures, and at the same time helping to enhance the self-connection strength of the vehicle body connecting bracket 1 and achieve effective connection with the subframe center cross beam 63.

[0051] More importantly, the above structure improves the structural strength and rigidity of the control arm 5 installation position, reduces the vibration transmission sensitivity, and at the same time reduces unnecessary parts development, reduces the overall weight of the subframe 6, and saves a lot of development costs.

[0052] In some embodiments, the above-mentioned characteristic vehicle body connection bracket 1 adopts Figure 7 See the structure shown. Figure 7 The vehicle body connecting bracket 1 includes a front enclosing panel 11 and a rear enclosing panel 12. The front enclosing panel 11 is connected to the top wall and the outer side wall of the subframe longitudinal beam 61; the rear enclosing panel 12 is connected to the top wall and the outer side wall of the subframe longitudinal beam 61, and the rear enclosing panel 12 and the front enclosing panel 11 form a hollow cavity; the front enclosing panel 11 or the rear enclosing panel 12 is the first mounting plate 14, or the front enclosing panel 11 and the rear enclosing panel 12 are integrally formed into the first mounting plate 14, and the inner lining panel 13 is connected to the inner walls of the front enclosing panel 11 and the rear enclosing panel 12.

[0053] In this embodiment, the vehicle body connection bracket 1 is formed by combining a front enclosure panel 11 with a rear enclosure panel 12. This arrangement reduces the difficulty of manufacturing the vehicle body connection bracket 1, thereby reducing component manufacturing costs. The front enclosure panel 11 has a rearward-opening U-shaped cross-section, while the rear enclosure panel 12 has a forward-opening U-shaped cross-section. Together, they form a hollow cavity with the main axis extending vertically and downwardly.

[0054] The lower portions of the front and rear enclosure panels 11, 12 are connected to the top and outer side walls of the subframe longitudinal beam 61, respectively. The upper portions of the front and rear enclosure panels 11, 12 are tilted outward and upward to achieve connection with the vehicle body, while the lower portions of the front and rear enclosure panels 11, 12 are tilted outward and downward to form a first mounting plate 14 connected to the control arm 5. Either the front and rear enclosure panels 11, 12 can independently form the first mounting plate 14, or the front and rear enclosure panels 11, 12 can jointly form the first mounting plate 14.

[0055] Specifically, in the X-direction of the vehicle body, the width of the rear enclosure panel 12 is greater than the width of the front enclosure panel 11, and a first mounting plate 14 is formed in the lower area of ​​the rear enclosure panel 12 for mounting the rear end of the connecting shaft 51. This arrangement avoids the problem of structural strength attenuation caused by splicing the front enclosure panel 11 and the rear enclosure panel 12 to form the first mounting plate 14, thereby ensuring the structural strength of the installation position of the control arm 5.

[0056] As a parallel embodiment, the width of the front enclosing panel 11 can also be made greater than the width of the rear enclosing panel 12. In this case, the first mounting plate 14 is formed by utilizing the lower area of ​​the front enclosing panel 11 to mount the connecting shaft 51 of the control arm 5, which can also ensure the reliable installation of the control arm 5.

[0057] In some embodiments, the above-mentioned characteristic vehicle body connection bracket 1 adopts Figure 3 、 Figure 5 and Figure 7 See the structure shown. Figure 3 、 Figure 5 and Figure 7 The upper end of the vehicle body connecting bracket 1 is connected to a connecting tube 4 extending in the up and down directions. The peripheral walls of the connecting tube 4 are respectively connected to the front enclosure panel 11 and the rear enclosure panel 12. The top of the connecting tube 4 is provided with a connecting plate 41 connected to the vehicle body, and a connecting hole 42 is provided on the connecting plate 41.

[0058] In this embodiment, the connecting tube 4, connected to the upper portion of the vehicle body connecting bracket 1, is supported beneath the vehicle body and connected to the vehicle body via a connecting plate 41 at the upper end of the connecting tube 4. The connecting plate 41 is provided with a connecting hole 42, which is connected to the vehicle body via a connector inserted into the connecting hole 42. The peripheral walls of the connecting tube 4 are respectively connected to the upper ends of the front and rear enclosure panels 11, 12, and are located on the outer sides of the front and rear enclosure panels 11, 12.

[0059] Specifically, to facilitate the installation of the connector, an introduction hole 43 is provided on the connecting plate 41, communicating with the connecting hole 42. The introduction hole 43 extends to the edge of the connecting plate 41, and the connector can be inserted into the connecting hole 42 through the introduction hole 43. At the same time, to facilitate the operator's connection of the connector, a clearance hole 44 is provided on the side of the connecting cylinder 4, corresponding to the introduction hole 43 above and below. The clearance hole 44 opens upward and communicates with the introduction hole 43, allowing the operator to insert a hand, and then carry the connector from the introduction hole 43 into the connecting hole 42. The operator then rotates the connector to reliably connect the vehicle body and the connecting plate 41, thereby effectively fixing the vehicle body connection bracket 1 to the vehicle body.

[0060] In a possible implementation, the above-mentioned characteristic vehicle body connection bracket 1 and mounting seat 2 are adopted as follows Figure 1 、 Figures 3 to 5 See the structure shown. Figure 1 、 Figures 3 to 5 The body connection bracket 1 and the mounting seat 2 are spaced apart along the X-direction of the body. The control arm mounting structure further includes a reinforcing plate 3 connected to the bottom of the subframe longitudinal beam 61 and located on the outside of the subframe longitudinal beam 61. The reinforcing plate 3 extends along the direction of the subframe longitudinal beam 61 and is respectively connected to the lower ends of the body connection bracket 1 and the mounting seat 2. The reinforcing plate 3 is used to support the bottom of the body connection bracket 1 and the mounting seat 2.

[0061] In this embodiment, the vehicle body connection bracket 1 and the mounting seat 2 are connected by a reinforcing plate 3. The reinforcing plate 3 is connected to the bottom of the subframe longitudinal beam 61 and is located on the outside of the subframe longitudinal beam 61. The reinforcing plate 3 is used to support the bottom of the vehicle body connection bracket 1 and the mounting seat 2 to ensure that the first mounting plate 14 and the second mounting plate 21 have reliable supporting strength to meet the connection strength requirements with the control arm 5.

[0062] The reinforcing plate 3 extends along the direction of the subframe longitudinal beam 61, extending backward from the bottom of the mounting seat 2 to the bottom of the body connecting bracket 1, so that the body connecting bracket 1 and the mounting seat 2 form a unified whole, which helps to increase the structural strength and rigidity of the control arm 5 installation position.

[0063] The above structure interconnects the mounting base 2, the reinforcement plate 3, the vehicle body connection bracket 1, the subframe longitudinal beam 61 and the subframe middle cross beam 63, thereby improving the structural strength and rigidity of the control arm 5 installation position, reducing the vibration transmission sensitivity, and making the vehicle durable while providing a comfortable driving experience. In a possible implementation, the above-mentioned characteristic reinforcement plate 3 adopts the following method: Figure 2 and Figure 3 See the structure shown. Figure 2 and Figure 3The mounting seat 2 and the vehicle body connecting bracket 1 respectively have a cavity opening downward, and the outer edge of the reinforcing plate 3 is connected with a first supporting portion 31 and a second supporting portion 32 extending outward and upward. The first supporting portion 31 is used to support in the cavity of the vehicle body connecting bracket 1, and the second supporting portion 32 is used to support in the cavity of the mounting seat 2.

[0064] In this embodiment, the first support portion 31 and the second support portion 32 on the outer edge of the reinforcing plate 3 extend outward and upward, and can be supported below the mounting seat 2 and the vehicle body connecting bracket 1 respectively to ensure the structural stability of the upper components.

[0065] For details, please refer to Figure 2 Taking the first support portion 31 as an example, the reinforcement plate 3, the first mounting plate 14, and the outer wall of the subframe longitudinal beam 61, which are provided with the first support portion 31, can form a substantially triangular structure. Applying the stability principle of a triangle, this structure has excellent support reliability, provides a stable installation foundation for the control arm 5, and facilitates improving the reliability of the installation structure. The structure of the second support portion 32 is similar to that of the first support portion 31 and will not be further described here.

[0066] On the basis of the above structure, an upwardly protruding reinforcing rib 33 is provided on the reinforcing plate 3. The reinforcing rib 33 extends along the Y direction of the vehicle body to the first support portion 31, which can structurally reinforce the connection position between the first support portion 31 and the reinforcing plate 3, thereby ensuring the reliability of the installation of the front shaft end of the connecting shaft 51.

[0067] In this embodiment, the vehicle body connecting bracket 1 is taken as an example for explanation. On the basis of using the first mounting plate 14 to install the connecting shaft 51, the vehicle body connecting bracket 1 also forms side panels that are bent downward and connected to the outer side walls of the sub-frame longitudinal beam 61 on the front and rear side edges of the first mounting plate 14. The side panels on both sides are enclosed with the first mounting plate 14 to form a cavity opening downward. The first support portion 31 is supported in the above-mentioned cavity and is correspondingly supported below the first mounting plate 14, thereby ensuring the position reliability of the first mounting plate 14 and ensuring the reliable installation of the rear end of the connecting shaft 51.

[0068] Similarly, the mounting seat 2 is also provided with downwardly bent side panels on the front and rear sides of the second mounting plate 21. The side panels can form a cavity with the second mounting plate 21, and the second support portion 32 extends upward into the cavity to achieve reliable support for the second mounting plate 21 and ensure effective installation of the front shaft end of the connecting shaft 51.

[0069] Furthermore, the edge of the mounting seat 2 is bent and extended toward the outside of the cavity, forming a flange structure facing the outside of the cavity. The above-mentioned flange structure is fitted and connected to the top wall or side wall of the subframe longitudinal beam 61, thereby improving the connection strength between the mounting seat 2 and the subframe longitudinal beam 61.

[0070] Based on the same inventive concept, the present embodiment further provides a subframe 6, which includes a control arm mounting structure. The subframe 6 includes two subframe longitudinal beams 61, and a subframe front crossbeam 62, a subframe middle crossbeam 63, and a subframe rear crossbeam 64 connected between the two subframe longitudinal beams 61. The front end of the control arm 5 is connected to the subframe longitudinal beams 61 via a connecting shaft 51 and the control arm mounting structure, and the rear end of the control arm 5 is connected to the subframe longitudinal beams 61, so that the entire control arm 5 can be securely mounted on the subframe 6.

[0071] Based on the same inventive concept, an embodiment of the present application further provides a vehicle, comprising a subframe 6. The subframe of the vehicle utilizes a vehicle body connection bracket 1 to achieve the dual function of connecting to the vehicle body and the control arm 5, thereby improving the structural strength and rigidity of the control arm 5 installation location, reducing the sensitivity of vibration transmission, and ensuring both vehicle durability and a comfortable driving experience.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control arm mounting structure, used for mounting a connecting shaft (51) at the front end of a control arm, characterized in that: The control arm mounting structure includes: A vehicle body connection bracket (1) is connected to the auxiliary frame longitudinal beam (61), the upper portion of the vehicle body connection bracket (1) extends outward and upward and is connected to the vehicle body, and the lower portion of the vehicle body connection bracket (1) extends outward and downward and has a first mounting portion connected to the connecting shaft (51); A mounting seat (2) connected to the subframe longitudinal beam (61) and / or the vehicle body connection bracket (1) and located on the front side of the vehicle body connection bracket (1), the mounting seat (2) having a second mounting portion connected to the connecting shaft (51); The vehicle body connecting bracket (1) has a first mounting plate (14) extending obliquely downwardly from the vehicle body, the first mounting plate (14) forming the first mounting portion, the mounting seat (2) has a second mounting plate (21) extending obliquely downwardly from the vehicle body, the second mounting plate (21) forming the second mounting portion, and the first mounting plate (14) and the second mounting plate (21) are respectively provided with mounting holes corresponding to the two side shaft ends of the connecting shaft (51).

2. The control arm mounting structure according to claim 1, wherein: An angle α is formed between the first mounting plate (14) and the XZ plane, and an angle α is also formed between the second mounting plate (21) and the XZ plane, and α is less than 60°.

3. The control arm mounting structure according to claim 1, wherein: In the vehicle body Y direction, the vehicle body connection bracket (1) corresponds horizontally to the sub-frame middle cross beam (63), and an inner lining plate (13) is provided inside the vehicle body connection bracket (1) and extends obliquely downwardly toward one side of the sub-frame middle cross beam (63), and the lower edge of the inner lining plate (13) is connected to the top wall of the sub-frame middle cross beam (63).

4. The control arm mounting structure according to claim 3, wherein: The vehicle body connecting bracket (1) comprises: A front enclosure panel (11) connected to the top wall and the outer side wall of the auxiliary frame longitudinal beam (61); A rear enclosing plate (12) is connected to the top wall and the outer side wall of the auxiliary frame longitudinal beam (61), and the rear enclosing plate (12) and the front enclosing plate (11) enclose a hollow cavity; The front enclosing plate (11) and / or the rear enclosing plate (12) is the first mounting plate (14), and the inner lining plate (13) is connected to the inner walls of the front enclosing plate (11) and the rear enclosing plate (12).

5. The control arm mounting structure according to claim 4, wherein: The upper end of the vehicle body connection bracket (1) is connected to a connection tube (4) extending in the up-down direction, the peripheral walls of the connection tube (4) are respectively connected to the front enclosure plate (11) and the rear enclosure plate (12), and the top of the connection tube (4) is provided with a connection plate (41) connected to the vehicle body, and the connection plate (41) is provided with a connection hole (42).

6. The control arm mounting structure according to any one of claims 1 to 5, characterized in that: The vehicle body connection bracket (1) and the mounting seat (2) are spaced apart along the X-direction of the vehicle body. The control arm mounting structure further comprises a reinforcing plate (3) connected to the bottom of the sub-frame longitudinal beam (61) and located on the outside of the sub-frame longitudinal beam (61). The reinforcing plate (3) extends along the direction of the sub-frame longitudinal beam (61) and is respectively connected to the lower ends of the vehicle body connection bracket (1) and the mounting seat (2). The reinforcing plate (3) is used to support the bottom of the vehicle body connection bracket (1) and the mounting seat (2).

7. The control arm mounting structure according to claim 6, wherein: The mounting seat (2) and the vehicle body connection bracket (1) respectively have a cavity opening downward, and the outer edge of the reinforcing plate (3) is connected to a first support portion (31) and a second support portion (32) extending outward and upward. The first support portion (31) is used to support the cavity of the vehicle body connection bracket (1), and the second support portion (32) is used to support the cavity of the mounting seat (2).

8. The control arm mounting structure according to claim 1, wherein: The mounting seat (2) is provided with downwardly bent side plates at positions on both sides of the front and rear of the second mounting plate (21), and the side plates and the second mounting plate (21) form a cavity.

9. A subframe, characterized in that: The subframe includes the control arm mounting structure according to any one of claims 1 to 8.

10. A vehicle, characterized in that: The vehicle includes the subframe of claim 9.

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