Control arm mounting structure, auxiliary frame and vehicle

Abstract

The invention provides a control arm mounting structure which is used for mounting a connecting shaft at the front end of a control arm, the control arm mounting structure comprises a vehicle body connecting support and a mounting seat, the vehicle body connecting support is connected to an auxiliary frame longitudinal beam, the upper portion of the vehicle body connecting support is connected with a vehicle body, and the lower portion of the vehicle body connecting support is provided with a first mounting part; the mounting seat is connected to the auxiliary frame longitudinal beam and the vehicle body connecting support or connected to one of the auxiliary frame longitudinal beam and the vehicle body connecting support, and the mounting seat is provided with a second mounting part connected with the connecting shaft. According to the control arm mounting structure provided by the invention, the vehicle body connecting bracket and the mounting seat are combined to provide the first mounting part and the second mounting part for mounting the connecting shaft of the control arm, and the vehicle body connecting bracket and the mounting seat can adopt a split structure or an integrally formed structure; the vehicle body connecting support integrates the dual functions of connecting the vehicle body and the control arm, the structural strength and rigidity of the mounting position of the control arm can be improved, the sensitivity of vibration transmission is reduced, and the riding comfort of passengers is improved.

Description

Technical Field

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

[0002] The suspension system connects the wheels and the subframe, and can transmit the excitation (force, vibration, etc.) from the road to the vehicle body through the subframe during driving to reduce the transmission of vibration and noise into the vehicle. As the "bridge" connecting the suspension system and the body, the connection reliability and vibration isolation performance of the subframe and the suspension control arm are important factors in determining the reliability and NVH level of the vehicle.

[0003] In the prior art, the subframe longitudinal beam is usually arranged as a "J"-shaped bracket or two oppositely placed "C"-shaped brackets to install the control arm. Although the above structure meets the basic requirements such as strength and durability required for assembling the control arm, its dynamic stiffness (referring to the ability of the structure to resist deformation under specific dynamic excitation) is often poor, and it is 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, improve the dynamic stiffness of the mounting structure, and improve the NVH performance of the vehicle.

[0005] To achieve the above object, 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 connection bracket is connected to the auxiliary frame longitudinal beam, the upper portion of the body connection bracket extends outwardly upward and is connected to the body, and the lower portion of the body connection bracket extends outwardly 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 at 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 downward outside the vehicle body, the first mounting plate forms a first mounting portion, the mounting seat has a second mounting plate extending obliquely downward outside the vehicle body, the second mounting plate forms 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 a possible implementation, in the direction of the vehicle body Y, the vehicle body connecting bracket corresponds horizontally to the cross beam in the sub-frame, and an inner lining plate extending obliquely downward on one side of the cross beam in the sub-frame is provided inside the vehicle body connecting bracket, and the lower edge of the inner lining plate is connected to the top wall of the cross beam in the sub-frame.

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

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

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

[0014] The front enclosure plate or the rear enclosure plate is the first mounting plate, or the front enclosure plate and the rear enclosure plate are jointly formed into the first mounting plate, and the lining plate is connected to the inner walls of the front enclosure plate and the rear enclosure 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 surrounding walls of the connecting tube are respectively connected to the front enclosure plate and the rear enclosure plate, the top of the connecting tube is provided with a connecting plate connected to the vehicle body, and the connecting plate is provided with a connecting hole.

[0016] In a 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 also includes a reinforcing plate connected to the bottom of the sub-frame longitudinal beam and located on the outside of the sub-frame longitudinal beam, the reinforcing plate extends along the direction of the sub-frame longitudinal beam and is respectively connected to the lower ends of the vehicle body connection bracket and the mounting seat, and 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 obliquely outward and upward, 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] Compared with the prior art, the solution shown in the embodiment of the present application provides a control arm mounting structure, which combines a vehicle body connection bracket and a mounting seat 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 seat can be arranged separately or integrally formed. The first mounting portion and the second mounting portion inclined toward the outside and downward 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, reduce the sensitivity of vibration transmission, and improve the comfort of passengers.

[0019] The present invention also provides a subframe, which includes a control arm mounting structure. The subframe combines a vehicle body connection bracket and a mounting seat 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 seat can be arranged separately or integrally, 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 and reduce the sensitivity of vibration transmission.

[0020] The present invention also provides a vehicle, comprising a subframe. The subframe of the vehicle utilizes a body connection bracket to realize the dual functions of connecting the body and the control arm, which helps to improve the structural strength and rigidity of the control arm installation position, reduces the sensitivity of vibration transmission, and enables the vehicle to have both 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of a top view of a 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 A schematic diagram of the partial cross-sectional 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 A 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 middle 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 figure are:

[0031] 1. Vehicle 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. Lead-in hole; 44. Clearance hole; 5. Control arm; 51. Connecting shaft; 6. Subframe; 61. Subframe longitudinal beam; 62. Subframe front cross beam; 63. Subframe middle cross beam; 64. Subframe rear cross beam. 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 in conjunction with 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 explicitly defined, such as the use of the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "clockwise", "counterclockwise", "high", "low" and the like 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, rather than indicating or implying 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 read Figures 1 to 8 , the control arm mounting structure, the subframe 6 and the 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 body connecting bracket 1 and a mounting seat 2. The body connecting bracket 1 is connected to the subframe longitudinal beam 61. The upper part of the body connecting bracket 1 extends outward and upward and is connected to the body. The lower part of the 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 body connecting bracket 1, or to one of the subframe longitudinal beam 61 and the body connecting bracket 1. The mounting seat 2 is located at the front side of the body connecting bracket 1, and the mounting seat 2 has a second mounting portion connected to the connecting shaft 51.

[0035] Compared with the prior art, the control arm mounting structure provided in the present 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 adopt a separate arrangement or an integrally formed structure. The first mounting portion and the second mounting portion inclined toward the outside and downward 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 mounting 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 at the front end and the rear end respectively during installation. The above structure is set for the connection shaft 51 at the front end of the control arm 5, and the two ends of the connection shaft 51 are respectively installed on the first installation part and the second installation part. The control arm 5 is provided on the outer side of each of the two sub-frame longitudinal beams 61, the body connection bracket 1 is provided on each of the two sub-frame longitudinal beams 61, and the mounting seat 2 is provided on each of the two sub-frame longitudinal beams 61.

[0037] In this embodiment, the vehicle body connecting bracket 1 not only connects the subframe body and the vehicle body, but also integrates the function of connecting with the control arm 5, which can not only effectively reduce the number of parts, save development costs, but also save the space under the vehicle. At the same time, the arrangement of the above structure can avoid welding deformation caused by welding multiple parts, making it easier to ensure the dimensional accuracy of the installation position of the control arm 5.

[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 (i.e. the position of the connecting shaft 51, which is also the load input point) to the vehicle body installation point (i.e. the vehicle body connecting bracket 1 and the vehicle body connection point, which is a fixed point here), and helps to improve the structural stiffness of the front installation position of the control arm 5 and reduce the sensitivity of vibration transmission.

[0039] The mounting seat 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 with 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 sub-frame longitudinal beam 61, and the vehicle body connecting bracket 1 is provided with a first mounting portion, and the mounting seat 2 is provided with a second mounting portion, so as to respectively install the two ends of the connecting shaft 51.

[0042] Furthermore, the mounting seat 2 can be connected to the vehicle body connecting bracket 1 at the same time on the basis of being connected to the auxiliary frame longitudinal beam 61 , so as to further improve 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 using 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 at the shaft ends on both sides of the connecting shaft 51 , and are reliably connected through the connecting pieces to achieve effective installation of the shaft ends on both sides of the connecting shaft 51 .

[0046] On this basis, in order to improve the convenience of operation during installation, a pre-installed nut 15 is pre-welded at the bottom of the first mounting plate 14, and the pre-installed nut 15 is connected to the mounting hole on the first mounting plate 14. When the connecting shaft 51 needs to be installed, the shaft hole at the rear shaft end of the connecting shaft 51 is aligned with the mounting hole of the first mounting plate 14, and the connecting parts such as bolts or studs are sequentially passed through the shaft hole and the mounting hole, and then threadedly connected with the pre-installed nut 15 to achieve effective fixation of the rear shaft end of the connecting shaft 51. Similarly, the shaft hole at the front shaft end of the connecting shaft 51 is used to be connected to the mounting hole on the second mounting plate 21 to achieve a reliable installation effect of the control arm 5. The above structure is convenient and quick to operate, and improves the assembly efficiency of the structure.

[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 respectively form an angle α with the XZ plane, and the numerical range of α is selected within the range of less than 60°, so that the first mounting plate 14 and the second mounting plate 21 are tilted outward and downward to meet the requirement of avoiding the upper components. The selection of the above-mentioned tilt angle makes the axis of the pre-installed nut 15 form an extension trend of tilting outward from bottom to top, avoiding the upper structure of the vehicle body connection bracket 1 from blocking the installation position of the control arm 5, providing sufficient assembly space for the installation of the control arm 5, and facilitating the improvement of the convenience of operation.

[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 direction of vehicle body Y upward, the vehicle body connecting bracket 1 corresponds horizontally to the sub-frame middle cross beam 63, and 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, and 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 sub-frame longitudinal beam 61 and the sub-frame middle beam 63 at the same time, which plays a role in strengthening the connection performance between the sub-frame middle beam 63 and the sub-frame longitudinal beam 61, avoiding the cumbersomeness caused by the need to design other reinforcement structures separately, and at the same time helps to enhance the self-connection strength of the vehicle body connecting bracket 1 and achieve effective connection with the sub-frame middle 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 is adopted as follows Figure 7 See the structure shown. Figure 7 The vehicle body connecting bracket 1 includes a front enclosure panel 11 and a rear enclosure panel 12. The front enclosure panel 11 is connected to the top wall and the outer side wall of the sub-frame longitudinal beam 61; the rear enclosure panel 12 is connected to the top wall and the outer side wall of the sub-frame longitudinal beam 61, and the rear enclosure panel 12 and the front enclosure panel 11 enclose a hollow cavity; the front enclosure panel 11 or the rear enclosure panel 12 is the first mounting plate 14, or the front enclosure panel 11 and the rear enclosure 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 enclosure panel 11 and the rear enclosure panel 12.

[0053] In this embodiment, the vehicle body connection bracket 1 is in the form of a combination of a front enclosure plate 11 and a rear enclosure plate 12. This arrangement is convenient for reducing the difficulty of processing the vehicle body connection bracket 1, thereby reducing the processing cost of the component. The cross section of the front enclosure plate 11 is a U-shape with an opening facing backward, and the cross section of the rear enclosure plate 12 is a U-shape with an opening facing forward. The two can enclose a hollow cavity with the main axis extending upward and downward.

[0054] The lower parts of the front enclosure panel 11 and the rear enclosure panel 12 are respectively connected to the top wall and the outer side wall of the subframe longitudinal beam 61, the upper parts of the front enclosure panel 11 and the rear enclosure panel 12 are tilted outward and upward to achieve connection with the vehicle body, and the lower parts of the front enclosure panel 11 and the rear enclosure panel 12 are respectively tilted outward and downward to form a first mounting plate 14 connected to the control arm 5. One of the front enclosure panel 11 and the rear enclosure panel 12 can form the first mounting plate 14 alone, and the front enclosure panel 11 and the rear enclosure panel 12 can also form the first mounting plate 14 together.

[0055] Specifically, in the direction of vehicle body X, 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 shaft 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 enclosure plate 11 can also be made greater than the width of the rear enclosure plate 12. In this case, the first mounting plate 14 is formed by utilizing the lower area of ​​the front enclosure plate 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 is adopted as follows 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 with a connecting tube 4 extending in the up-down direction, the peripheral walls of the connecting tube 4 are respectively connected with the front enclosure plate 11 and the rear enclosure plate 12, and the top of the connecting tube 4 is provided with a connecting plate 41 connected with the vehicle body, and the connecting plate 41 is provided with a connecting hole 42.

[0058] In this embodiment, the connecting tube 4 connected to the upper part of the vehicle body connecting bracket 1 is used to be supported under the vehicle body, and is connected to the vehicle body by a connecting plate 41 at the upper end of the connecting tube 4. The connecting plate 41 is provided with a connecting hole 42, and is connected to the vehicle body through a connecting piece passing through the connecting hole 42. The peripheral wall of the connecting tube 4 is respectively connected to the upper ends of the front enclosure plate 11 and the rear enclosure plate 12, and is located on the outer sides of the front enclosure plate 11 and the rear enclosure plate 12.

[0059] Specifically, in order to facilitate the installation of the connecting piece, an introduction hole 43 connected with the connecting hole 42 is provided on the connecting plate 41, and the introduction hole 43 extends to the edge of the connecting plate 41, and the connecting piece can be sent into the connecting hole 42 from the introduction hole 43. At the same time, in order to facilitate the operator to connect the connecting piece, a clearance hole 44 corresponding to the upper and lower sides of the introduction hole 43 is provided on the side of the connecting cylinder 4, and the clearance hole 44 opens upward and is connected with the introduction hole 43, so that the operator can reach in manually, and then carry the connecting piece from the introduction hole 43 into the connecting hole 42, and then reliably connect the vehicle body and the connecting plate 41 by rotating the connecting piece, so as to achieve effective fixation of the vehicle body connection bracket 1 and the vehicle body.

[0060] In a possible implementation, the above-mentioned characteristic vehicle body connection bracket 1 and the mounting seat 2 are adopted as follows Figure 1 , Figures 3 to 5 See the structure shown. Figure 1 , Figures 3 to 5 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 also includes 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.

[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 sub-frame longitudinal beam 61 and is located on the outside of the sub-frame 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 seat 2, the reinforcing plate 3, the vehicle body connecting 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 characteristic reinforcing plate 3 is adopted as follows 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 obliquely 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 reinforcing plate 3, the first mounting plate 14 and the outer wall of the subframe longitudinal beam 61 provided with the first support portion 31 can enclose a nearly triangular structure. Applying the stability principle of the triangle, the above structure has good supporting reliability, provides a stable mounting foundation for the installation of the control arm 5, and facilitates improving the reliability of the mounting structure. The structure of the second support portion 32 is similar to that of the first support portion 31, and will not be repeated here.

[0066] On the basis of the above structure, an upwardly protruding reinforcing rib 33 is provided on the reinforcing plate 3, and 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 bent downward and connected to the outer side walls of the sub-frame longitudinal beam 61 at 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 correspondingly supported at the bottom of the first mounting plate 14, thereby ensuring the position reliability of the first mounting plate 14 and ensuring the reliable installation of the rear shaft end of the connecting shaft 51.

[0068] Similarly, the mounting seat 2 is also provided with downwardly bent side panels at 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 to form a flange structure facing the outside of the cavity. The flange structure is fitted and connected to the top wall or side wall of the sub-frame longitudinal beam 61, thereby improving the connection strength between the mounting seat 2 and the sub-frame longitudinal beam 61.

[0070] Based on the same inventive concept, the embodiment of the present application 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 beam 61 through the connecting shaft 51 and the control arm mounting structure, and the rear end of the control arm 5 is connected to the subframe longitudinal beam 61, so that the control arm 5 as a whole can be reliably mounted on the subframe 6.

[0071] Based on the same inventive concept, the embodiment of the present application also provides a vehicle, which includes a subframe 6. The subframe of the vehicle uses the body connection bracket 1 to achieve the dual functions of connecting the 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 makes the vehicle durable while also providing 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 protection scope 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 comprises: 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) extending outwardly upward and connected to the vehicle body, and the lower portion of the vehicle body connection bracket (1) extending outwardly downward and having a first mounting portion connected to the connecting shaft (51); The mounting seat (2) is connected to the auxiliary frame longitudinal beam (61) and / or the vehicle body connecting bracket (1) and is located on the front side of the vehicle body connecting bracket (1); the mounting seat (2) has a second mounting portion connected to the connecting shaft (51).

2. The control arm mounting structure according to claim 1, characterized in that: 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).

3. The control arm mounting structure according to claim 2, characterized in that: 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°.

4. The control arm mounting structure according to claim 2, characterized in that: 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).

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

6. The control arm mounting structure according to claim 5, characterized in that: 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), 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).

7. The control arm mounting structure according to any one of claims 1 to 6, characterized in that: The vehicle body connection bracket (1) and the mounting seat (2) are arranged at intervals along the X direction of the vehicle body, and the control arm mounting structure also includes a reinforcing plate (3) connected to the bottom of the auxiliary frame longitudinal beam (61) and located on the outside of the auxiliary frame longitudinal beam (61), the reinforcing plate (3) extending along the direction of the auxiliary frame longitudinal beam (61) and connected to the lower ends of the vehicle body connection bracket (1) and the mounting seat (2) respectively, and the reinforcing plate (3) is used to support the bottom of the vehicle body connection bracket (1) and the mounting seat (2).

8. The control arm mounting structure according to claim 7, characterized in that: 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 at an angle, wherein the first support portion (31) is used to support in the cavity of the vehicle body connection bracket (1), and the second support portion (32) is used to support in the cavity of the mounting seat (2).

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

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

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