Auxiliary frame and vehicle with same

Abstract

The invention discloses an auxiliary frame and a vehicle with the same, and relates to the field of vehicle parts. The auxiliary frame comprises an auxiliary frame body, a steering engine and an air conditioner support, the auxiliary frame body comprises longitudinal beams and a cross beam, and the two ends of the cross beam are connected with the longitudinal beams; the steering engine transversely extends, the two ends of the steering engine are connected with the longitudinal beams through first fixing assemblies, and the middle of the steering engine is connected with the cross beam through a second fixing assembly; the air conditioner support is arranged above the steering engine, part of the first fixing assembly is located between the steering engine and the air conditioner support and connected with the air conditioner support, and the air conditioner support is connected with a vehicle body. The mounting strength of the steering engine at the longitudinal beam mounting point can be improved, the fatigue performance of the upper cross beam of the auxiliary frame can be improved, and the stability and durability of the auxiliary frame are improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle parts, and in particular to a subframe and a vehicle having the subframe. Background Art

[0002] In a traditional subframe, the steering gear is arranged transversely on the left and right longitudinal beams and the rear cross beam of the subframe, and is generally directly bolted to the subframe at 2 to 3 points, and the subframe and the body are connected at four or six points. Since the left and right longitudinal beams of the subframe will be subject to lateral loads from the upper and lower control arm mounting points of the subframe, and according to CAE analysis, the lateral loads at the lower control arm mounting point are mainly transitionally supported by the mounting point of the steering gear housing on the longitudinal beam, in addition to the lateral loads from the lower control arm mounting point, the steering gear housing itself has to bear different loads from 2 to 3 mounting points. Therefore, there will be a problem of insufficient strength of the steering gear housing; and since the steering gear is directly bolted to the subframe, parts gaps will inevitably appear in the longitudinal beam of the subframe during the multi-layer plate stacking and welding process, resulting in the risk of bolts slipping when tightening at the joint of the steering gear mounting point; in addition, in the prior art, a mounting point in the middle of the vehicle body is generally added to the middle of the longitudinal beam. Since the mounting points at the end of the steering gear and the mounting points of the stabilizer bar assembly are distributed in the middle area of ​​the longitudinal beam, the space is too compact, which is not conducive to adding additional mounting points in the middle of the vehicle body. Summary of the invention

[0003] In view of this, the present invention provides a subframe and a vehicle having the same, which can not only improve the installation strength of the steering gear at the longitudinal beam installation point, but also improve the fatigue performance of the cross beam on the subframe, and improve the stability and durability of the subframe.

[0004] The present invention provides a subframe, comprising a subframe body, a steering gear, and an air-conditioning bracket, wherein the subframe body comprises a longitudinal beam and a cross beam, and the two ends of the cross beam are connected to the longitudinal beam; the steering gear extends laterally, and the two ends of the steering gear are connected to the longitudinal beam through a first fixing component, and the middle part of the steering gear is connected to the cross beam through a second fixing component; the air-conditioning bracket is arranged above the steering gear and is connected to the longitudinal beam and the cross beam on the subframe body through a third fixing component, and some components in the first fixing component are located between the steering gear and the air-conditioning bracket and are connected to the air-conditioning bracket, and the air-conditioning bracket is connected to the vehicle body.

[0005] Furthermore, the air conditioner bracket is connected to the longitudinal beam and the cross beam on the sub-frame body through a third fixing assembly.

[0006] Furthermore, the longitudinal beam includes a first longitudinal beam and a second longitudinal beam, the cross beam includes a first cross beam and a second cross beam, the first cross beam and the second cross beam are arranged in parallel, and there is a distance between the first cross beam and the second cross beam, and the two ends of the first cross beam and the second cross beam are respectively connected to the first longitudinal beam and the second longitudinal beam.

[0007] Furthermore, the first longitudinal beam and the second longitudinal beam each include a longitudinal beam upper plate, a longitudinal beam lower plate, a first inner reinforcing plate, and a second inner reinforcing plate, the longitudinal beam upper plate and the longitudinal beam lower plate are welded into a whole, the first inner reinforcing plate and the second inner reinforcing plate are welded inside the longitudinal beam upper plate and the longitudinal beam lower plate, and both ends of the first inner reinforcing plate are welded to the longitudinal beam upper plate and the longitudinal beam lower plate, the second inner reinforcing plate is arranged below the first inner reinforcing plate, and the second inner reinforcing plate is welded to the longitudinal beam lower plate.

[0008] Furthermore, the first fixing assembly includes a first bracket, a first sleeve, and a first fastener. The top of the first bracket is connected to the air-conditioning bracket, and the bottom of the first bracket is connected to the first sleeve. The first fastener passes through the second inner reinforcement plate, the first sleeve, the bottom of the first bracket from bottom to top and is fastened to the steering gear housing at both ends of the steering gear.

[0009] Further, the first bracket includes a first transverse support arm, a first oblique support arm, and a second transverse support arm, the first transverse support arm and the second transverse support arm are arranged in parallel, the top end of the first oblique support arm is connected to one end of the first transverse support arm, the bottom end of the first oblique support arm is connected to one end of the second transverse support arm toward the first transverse support arm, the first transverse support arm is connected to the air-conditioning bracket, and the second transverse support arm is connected to the first sleeve.

[0010] Further, the first sleeve includes a first disc portion and a first columnar portion, the first disc portion is arranged at the top end of the first columnar portion, a convex ring is provided on the first disc portion, a clamping groove is provided at the bottom of the second transverse support arm, the first sleeve is connected to the second transverse support arm through the clamping connection between the convex ring and the clamping groove, and the first columnar portion passes through the upper plate of the longitudinal beam and is connected to the upper plate of the longitudinal beam.

[0011] Furthermore, the second fixing group includes a second sleeve and a second fastener, the second sleeve includes a second disc portion and a second columnar portion, the second disc portion is arranged at the top end of the second columnar portion, the second columnar portion passes through the top of the second beam and is connected to the second beam, and the second fastener passes through the bottom of the second beam, the second columnar portion, and the second disc portion from bottom to top in sequence and is fastened to the steering gear housing.

[0012] Furthermore, the third fixing assembly includes a second bracket, a third sleeve, and a third fastener, the second bracket is mounted on the first longitudinal beam, the second longitudinal beam, and the first cross beam, the third sleeve includes a third disc portion and a third columnar portion, the third disc portion is arranged at the top end of the third columnar portion, the third columnar portion passes through the second bracket and is connected to the second bracket, and the third fastener passes through the third columnar portion and the third disc portion from bottom to top and is fastened to the air conditioning bracket.

[0013] Furthermore, the steering gear is arranged between the first crossbeam and the second crossbeam, and is arranged parallel to the first crossbeam and the second crossbeam, the steering gear mounting points are provided on the first longitudinal beam, the second longitudinal beam, and the second crossbeam, the first fixing component is arranged at the steering gear mounting points on the first longitudinal beam and the second longitudinal beam, and the second fixing component is arranged at the steering gear mounting points on the second crossbeam.

[0014] Furthermore, the air conditioning bracket includes a transverse arm, a longitudinal arm, and an extension arm. The transverse arm is arranged parallel to the crossbeam and above the steering gear. The longitudinal arms are arranged on both sides of the transverse arm and connected to the ends of the transverse arm. The extension arm is arranged on one side of the transverse arm and connected to the middle of the transverse arm.

[0015] Furthermore, the cross arm is connected to the first fixed component at the steering gear mounting point on the first longitudinal beam and the second longitudinal beam; the longitudinal arm is installed at the air-conditioning bracket mounting point on the first longitudinal beam and the second longitudinal beam through the third fixed group, and the extension arm is installed at the air-conditioning bracket mounting point on the first cross beam through the third fixed component.

[0016] The present invention also provides a vehicle, comprising the subframe as described above.

[0017] Compared with the existing technology, the present invention has the following beneficial technical effects:

[0018] The present invention provides a subframe and a vehicle having the same. A first fixing component is arranged on the longitudinal beam. A first bracket in the first fixing component is connected to a steering gear and an air-conditioning bracket. The air-conditioning bracket is connected to the vehicle body. The force borne by the steering gear housing at the longitudinal beam mounting point is transmitted to the vehicle body through the first fixing component, thereby dispersing the lateral load from the lower control arm mounting point, and can improve the installation strength of the steering gear at the longitudinal beam mounting point; and the middle mounting point of the vehicle body that originally needs to be added to the longitudinal beam is transferred to the air-conditioning bracket, which can save installation space and use the air-conditioning bracket as a reinforcing crossbeam to improve the fatigue performance of the crossbeam on the subframe, thereby improving the stability and durability of the subframe; the air-conditioning bracket is installed on the subframe body through six mounting points, and is installed with the middle of the vehicle body through two mounting points, which can improve the NVH (NoiseVibrationHarshness) modal performance of the air-conditioning bracket; the arrangement of the sleeves in the three fixing components can avoid the risk of stick-slip during the tightening of the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a subframe of the present invention;

[0020] Figure 2 A side view of a subframe of the present invention;

[0021] Figure 3 This is a structural schematic diagram of a sub-frame of the present invention without an air-conditioning bracket;

[0022] Figure 4 This is a structural schematic diagram of the longitudinal beam in the present invention without the longitudinal beam upper plate;

[0023] Figure 5 It is a structural schematic diagram of the first fixing component in the present invention;

[0024] Figure 6 is a schematic structural diagram of the first bracket in the present invention;

[0025] Figure 7 It is a structural schematic diagram of the first sleeve in the present invention;

[0026] Figure 8 is a schematic structural diagram of the second fixing assembly in the present invention;

[0027] Fig. 9 It is a schematic structural diagram of the third fixing component in the present invention.

[0028] Among them: 10-subframe body; 11-longitudinal beam; 11a-longitudinal beam upper plate; 11b-longitudinal beam lower plate; 11c-first inner reinforcement plate; 11d-second inner reinforcement plate; 111-first longitudinal beam; 112-second longitudinal beam; 12-cross beam; 121-first cross beam; 122-second cross beam; 20-steering gear; 30-air conditioning bracket; 31-cross arm; 32-longitudinal arm; 33-extension arm; 40-first fixing assembly; 41-first bracket; 41a-first cross support arm; 41b-first oblique support arm; 41c-second transverse support arm; 411-slot; 412-first through hole; 413-second through hole; 42-first sleeve; 42a-first disc portion; 42b-first columnar portion; 421-convex ring; 43-first fastener; 50-second fixing assembly; 51-second sleeve; 52-second fastener; 60-third fixing assembly; 61-second bracket; 62-third sleeve; 63-third fastener; 70-lower control arm mounting point. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated in the description is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred parts or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] See also Figure 1-2The present invention provides a subframe, including a subframe body 10, a steering gear 20, and an air conditioning bracket 30. The subframe body 10 includes a longitudinal beam 11 and a cross beam 12, and both ends of the cross beam 12 are connected to the longitudinal beam 11; the steering gear 20 extends laterally, that is, the steering gear 20 is arranged in parallel with the cross beam 12, and both ends of the steering gear 20 are connected to the longitudinal beam 11 through a first fixing component 40, and the middle part of the steering gear 20 is connected to the cross beam 12 through a second fixing component 50. It should be noted that the middle part mentioned in the present invention does not refer to the middle part; the air conditioning bracket 30 is arranged above the steering gear 20, and is connected to the longitudinal beam 11 and the cross beam 12 on the subframe body 10 through a third fixing component 60. Some components in the first fixing component 40 are located between the steering gear 20 and the air conditioning bracket 30, and are connected to the air conditioning bracket 30. The air conditioning bracket 30 is connected to the vehicle body for installing the vehicle body air conditioner. In the prior art, the longitudinal beam 11 of the sub-frame body 10 is subjected to lateral loads from the upper and lower control arm mounting points 70 of the sub-frame body 10. According to CAE analysis, the lateral loads of the lower control arm mounting point 70 are mainly supported by the mounting point of the steering gear housing on the longitudinal beam 11. In addition to the lateral loads from the lower control arm mounting point 70, the steering gear housing also has to withstand different loads from its three mounting points. Therefore, the problem of insufficient strength of the steering gear housing may occur. In the present invention, a first fixing assembly 40 is provided on the longitudinal beam 11. Part of the components of the first fixing assembly 40 connect the steering gear 20 with the air conditioning bracket 30, and the air conditioning bracket 30 is connected to the vehicle body. Therefore, the force borne by the steering gear housing at the mounting point of the longitudinal beam 11 is transmitted to the vehicle body through the first fixing assembly 40, dispersing the lateral loads from the lower control arm mounting point 70. The lateral load of the brake arm mounting point 70 can improve the installation strength of the steering gear 20 at the mounting point of the longitudinal beam 11; in addition, in the prior art, an installation point in the middle of the vehicle body is generally added in the middle of the longitudinal beam 11. Since the installation point at the end of the steering gear 20 and the installation point of the stabilizer bar assembly are all distributed in the middle area of ​​the longitudinal beam 11, the space is too compact, which is not conducive to adding additional installation points in the middle of the vehicle body. The present invention arranges the air-conditioning bracket 30 above the steering gear 20 and is connected to the first fixing component 40 on the longitudinal beam 11. The air-conditioning bracket 30 is connected to the middle of the vehicle body, and the middle of the vehicle body mounting point that was originally required to be added is transferred to the air-conditioning bracket 30, which not only saves installation space, but also can use the air-conditioning bracket 30 as a reinforcing crossbeam to improve the fatigue performance of the crossbeam 12 on the subframe 10, thereby improving the stability and durability of the subframe 10.

[0032] Please also read Figure 3The sub-frame body 10 is a frame-type sub-frame, the longitudinal beam 11 includes a first longitudinal beam 111 and a second longitudinal beam 112, the cross beam 12 includes a first cross beam 121 and a second cross beam 122, the first cross beam 121 and the second cross beam 122 are arranged in parallel, and there is a spacing between the first cross beam 121 and the second cross beam 122, the two ends of the first cross beam 121 and the second cross beam 122 are respectively connected to the first longitudinal beam 111 and the second longitudinal beam 112, the first longitudinal beam 111, the second longitudinal beam 112, the first cross beam 121, and the second cross beam 122 are connected to form a frame-type, stable sub-frame body 10.

[0033] See also Figure 2 and Figure 4 The first longitudinal beam 111 and the second longitudinal beam 112 both include a longitudinal beam upper plate 11a, a longitudinal beam lower plate 11b, a first inner reinforcing plate 11c, and a second inner reinforcing plate 11d. The longitudinal beam upper plate 11a and the longitudinal beam lower plate 11b are welded into a whole. The first inner reinforcing plate 11c and the second inner reinforcing plate 11d are welded inside the longitudinal beam upper plate 11a and the longitudinal beam lower plate 11b, and both ends of the first inner reinforcing plate 11c are welded to the longitudinal beam upper plate 11a and the longitudinal beam lower plate 11b. The second inner reinforcing plate 11d is arranged below the first inner reinforcing plate 11c, and the second inner reinforcing plate 11d is welded to the longitudinal beam lower plate 11b. The overall strength and rigidity of the longitudinal beam 11 can be improved by the closed welding of the longitudinal beam upper plate 11a and the longitudinal beam lower plate 11b, and the reinforcement of the first inner reinforcing plate 11c and the second inner reinforcing plate 11d.

[0034] Please refer to Figure 3 The steering gear 20 is arranged between the first crossbeam 121 and the second crossbeam 122 and is arranged in parallel with the first crossbeam 121 and the second crossbeam 122. The first longitudinal beam 111, the second longitudinal beam 112 and the second crossbeam 122 are all provided with mounting points for the steering gear 20. The first fixing assembly 40 is arranged at the mounting points for the steering gear 20 on the first longitudinal beam 111 and the second longitudinal beam 112. The second fixing assembly 50 is arranged at the mounting points for the steering gear 20 on the second crossbeam 122. The two ends of the steering gear 20 are respectively fixedly connected to the first fixing assembly 40 at the mounting points for the steering gear 20 on the first longitudinal beam 111 and the second longitudinal beam 112 through the steering gear housing. The middle part of the steering gear 20 is connected to the second fixing assembly 50 at the mounting point for the steering gear 20 on the second crossbeam 122 through the steering gear housing. The steering gear 20 is installed at three mounting points on the subframe body 10 through the first fixing assembly 40 and the second fixing assembly 50.

[0035] Please refer to Figure 1The air conditioning bracket 30 includes a cross arm 31, a longitudinal arm 32, and an extension arm 33. The cross arm 31 is arranged parallel to the cross beam 12 and is arranged above the steering gear 20. The bottom end of the cross arm 31 is connected to the first fixing component 40 at the mounting point of the steering gear 20 on the longitudinal beam 11; there are four longitudinal arms 32, two of which are arranged on one side of the cross arm 31 close to the first cross beam 121 and connected to the end of the cross arm 31, and the other two longitudinal arms 32 are arranged on one side of the cross arm 31 close to the second cross beam 122 and are also connected to the end of the cross arm 31. There are two extension arms 33, both of which are arranged at The cross arm 31 is close to one side of the first cross beam 121 and connected to the middle of the cross arm 31; the first longitudinal beam 111, the second longitudinal beam 112, and the first cross beam 121 are all provided with air conditioning bracket 30 mounting points, the four longitudinal arms 32 are mounted at the air conditioning bracket 30 mounting points on the first longitudinal beam 111 and the second longitudinal beam 122 through the third fixing assembly 60, the two extension arms 33 are mounted at the air conditioning bracket 30 mounting points on the first cross beam 121 through the third fixing assembly 60, and the air conditioning bracket 30 is mounted at six mounting points on the sub-frame body 10 through the third fixing assembly 60. The top of the cross arm 31 is provided with two body mounting points, and the air conditioning bracket 30 is connected to the body through the cross arm 31 for mounting the body air conditioner. The cross arm 31 can play the role of strengthening the cross beam, further improving the strength of the sub-frame body 10, and improving the stability and durability of the sub-frame body 10. In addition, since the extension arm 33 is connected to the first cross beam 121, the force received by the first cross beam 121 can be transmitted to the air conditioning bracket 30 through the extension arm 33, and then to the vehicle body. Therefore, the air conditioning bracket 30 can also improve the fatigue of the cross beam 12 and improve the durability of the cross beam 12. In addition, the air conditioning bracket 30 is installed on the sub-frame body 10 through six mounting points, and is installed on the middle part of the vehicle body through two mounting points on the cross arm 31, which can improve the NVH (Noise Vibration Harshness) modal performance of the air conditioning bracket 30.

[0036] See also Figure 5-7 The first fixing assembly 40 includes a first bracket 41, a first sleeve 42, and a first fastener 43. The first bracket 41 specifically includes a first transverse support arm 41a, a first oblique support arm 41b, and a second transverse support arm 41c. The first transverse support arm 41a and the second transverse support arm 41c are arranged in parallel. The top end of the first oblique support arm 41b is connected to one end of the first transverse support arm 41a, and the bottom end of the first oblique support arm 41b is connected to one end of the second transverse support arm 41c toward the first transverse support arm 41a, which looks like a Z-shaped structure bracket flipped 180°; the first sleeve 42 specifically includes a first disc portion 42a and a first columnar portion 42b. The first disc portion 42a is installed on the top end of the first columnar portion 42b to form a T-shaped sleeve.

[0037] Furthermore, the first longitudinal beam 111 and the second longitudinal beam 112 are both provided with a first mounting hole at the mounting point of the steering gear 20 for mounting the first sleeve 42; the other end of the first transverse support arm 41a is provided with a first through hole 412, and the top of the first transverse support arm 41a is connected to the transverse arm 31 of the air conditioning bracket 30 through the first through hole 412 via a mounting member, and it should be noted that the mounting member may include a bolt and a nut; the second transverse support arm 41c is provided with a second through hole 413 at one end away from the first transverse support arm 41a, and the outer periphery of the second through hole 413 is provided with a card groove 411, and the card groove 411 is used to be clamped with the first sleeve 42; the first disc portion 42a is provided with a third through hole, and the first columnar portion 42b is provided with a The first through groove is connected with the third through hole, and a convex ring 421 is provided on the outer periphery of the third through hole. The first sleeve 42 is clamped together with the clamping groove 411 of the second cross support arm 41c through the convex ring 421 on the first disc portion 42a. After clamping, the first sleeve 42 is passed through the first mounting hole on the first longitudinal beam 111 and the second longitudinal beam 112, and the top end of the first columnar portion 42b is welded to the hole wall of the first mounting hole. The first fastener 43 passes through the second inner reinforcement plate 11d, the first through groove of the first columnar portion 42b, and the third through hole of the first disc portion 42a from bottom to top, and is fastened to the steering gear housing at both ends of the steering gear 20, and the bottom of the first fastener 43 is welded to the second inner reinforcement plate 11d. It should be noted that the first fastener 43 can be a bolt, and a corresponding bolt hole is provided in the steering gear housing. The first fastener 43 passes through the second inner reinforcement plate 11d, the first through groove of the first columnar portion 42b, and the third through hole of the first disc portion 42a from bottom to top, and is screwed to the steering gear housing at both ends of the steering gear 20. Since the mounting point of the steering gear 20 on the longitudinal beam 11 is set at the first inner reinforcement plate 11c and the second inner reinforcement plate 11d, the strength and rigidity of the mounting point of the steering gear 20 on the longitudinal beam 11 can be further improved; in addition, in the prior art, the bolts at both ends of the steering gear 20 are directly passed through the longitudinal beam 11 and screwed to the housings at both ends of the steering gear 20, and parts gaps are prone to occur during the welding process between the longitudinal beam upper plate 11a and the longitudinal beam lower plate 11b, resulting in an uneven upper surface of the longitudinal beam 11, and there is a risk of sticking and slipping when the bolts are tightened, which may cause the bolts to fall off during driving of the vehicle. In the present invention, the longitudinal beam 11 is directly welded to the first sleeve 42, the first fastener 43 passes through the first sleeve 42 and the second transverse support arm 41c and is screwed to the two ends of the steering gear 20, and the first disc portion 42a of the first sleeve 42 and the second transverse support arm 41c are clamped, and the screwed portions at both ends of the steering gear 20 are located on the second transverse support arm 41c. Therefore, even if there is a parts gap between the longitudinal beam upper plate 11a and the longitudinal beam lower plate 11b during the welding process, the screwed portions at both ends of the steering gear 20 will not be unstable. Therefore, there will be no risk of sticking and slipping during the tightening of the first fastener 43.

[0038] See also Figure 8 The second fixing assembly 50 includes a second sleeve 51 and a second fastener 52. The second sleeve 51 is also a T-shaped sleeve, which includes a second disc portion and a second columnar portion. The second disc portion is arranged at the top of the second columnar portion. The second columnar portion passes through the top of the second beam 122 and is connected to the second beam 122. Specifically, a second mounting hole is provided at the mounting point of the steering gear 20 on the second beam 122. The second columnar portion is inserted into the second mounting hole, and the outer wall of the second columnar portion is welded to the second mounting hole. The second disc portion is provided with a fourth through hole. The second columnar portion is provided with a second through slot, which is connected to the fourth through hole. The bottom of the second fastener 52 is welded to the bottom of the second cross beam 122, and passes through the second through slot of the second columnar portion and the fourth through hole of the second disc portion in sequence, and is fastened to the steering gear housing. It should be noted that the second fastener 52 can be a bolt, and the steering gear housing is provided with a corresponding bolt hole. The bottom of the second fastener 52 is welded to the bottom of the second cross beam 122, and passes through the second through slot of the second columnar portion and the fourth through hole of the second disc portion in sequence, and is screwed to the steering gear housing. The provision of the second sleeve 51 can also avoid the uneven surface of the second cross beam 122, which may cause the second fastener 52 to have a stick-slip risk during the tightening process.

[0039] See also Fig. 9The third fixing assembly 60 includes a second bracket 61, a third sleeve 62, and a third fastener 63. The second bracket 61 is a U-shaped bracket with an opening facing downward. The second bracket 61 is welded to the first longitudinal beam 111, the second longitudinal beam 112, and the first cross beam 121 at the mounting point of the air conditioning bracket 30. The air conditioning bracket 30 is mounted on the sub-frame body 10 through the second bracket 61. The second bracket 61 is designed to be U-shaped, which can support the air conditioning bracket 30 and improve the mounting strength at the mounting point. The third sleeve 62 is also a T-shaped structural sleeve, which includes a third disc portion and a third columnar portion. The third disc portion is arranged at the top end of the third columnar portion, the third columnar portion passes through the second bracket 61 and is connected to the second bracket 61; specifically, the second bracket 61 is provided with a third mounting hole, the third columnar portion is inserted into the third mounting hole, and the outer wall of the third columnar portion is welded to the third mounting hole; the third disc portion is provided with a fifth through hole, the third columnar portion is provided with a third through groove, the third through groove is connected to the fifth through hole, the bottom of the third fastener 63 is welded to the bottom of the third sleeve 62, and passes through the third through groove of the third columnar portion, the fifth through hole of the third disc portion, and is fastened to the longitudinal arm 32 and the extension arm 33 in sequence. It should be noted that the third fastener 63 can be a bolt, and the longitudinal arm 32 and the extension arm 33 are equipped with corresponding nuts. The bottom of the third fastener 63 is welded to the bottom of the third sleeve 62, and passes through the third through groove of the third columnar portion, the fifth through hole of the third disc portion and the longitudinal arm 32, and the extension arm 33 in sequence, and then is screwed with the nut; since the second bracket 61 is a single integral structure, there is no risk of welding gaps. Therefore, the third fixing assembly 60 may also only include the second bracket 61 and the third fastener 63. The third fastener 63 passes through the third mounting hole of the second bracket 61 and is screwed with the longitudinal arm 32 and the extension arm 33. The third fastener 63 also does not have the risk of sticking.

[0040] Please refer to Figure 1 The subframe body 10 is connected to the vehicle body, and the ends of the first longitudinal beam 111 and the second longitudinal beam 112 of the subframe body 10 are provided with vehicle body mounting points, and the middle of the first longitudinal beam 111 and the second longitudinal beam 112, that is, the two ends of the cross arm 31 of the air conditioning bracket 30 are provided with vehicle body middle mounting points. In this way, the subframe body 10 is connected to the vehicle body through the mounting points on the longitudinal beam 11 and the mounting points on the air conditioning bracket 30, avoiding the need for additional mounting points or mounting brackets in the longitudinal beam 11, saving installation space and installation parts. It should be noted that the subframe body 10 can be connected to the vehicle body through a sleeve or a bushing.

[0041] From the above description, it can be known that the subframe provided by the present invention is provided with a first fixing component 40 on the longitudinal beam 11, the first bracket 41 in the first fixing component 40 connects the steering gear 20 and the air conditioning bracket 30, and the air conditioning bracket 30 is connected to the vehicle body, and the force borne by the steering gear housing at the mounting point of the longitudinal beam 11 is transmitted to the vehicle body through the first fixing component 40, thereby dispersing the lateral load from the lower control arm mounting point 70, and can improve the mounting strength of the steering gear 20 at the mounting point of the longitudinal beam 11; and the middle mounting point of the vehicle body that originally needs to be added to the longitudinal beam 11 is transferred to the air conditioning bracket 30, which can not only save installation space, but also use the air conditioning bracket 30 as a reinforcing crossbeam, improve the fatigue performance of the crossbeam 12 on the subframe 10, and improve the stability and durability of the subframe 10; the air conditioning bracket 30 is installed on the subframe body 10 through six mounting points, and is installed with the middle of the vehicle body through two mounting points, which can improve the NVH (Noise Vibration Harshness) of the air conditioning bracket Harshness, noise, vibration, comfort) modal performance; The setting of the sleeves in the three fixing components can avoid the risk of stick-slip during the tightening process of the bolts.

[0042] The present invention also provides a vehicle, comprising the subframe as described above. For other structures of the subframe and other structures of the vehicle, please refer to the prior art and will not be described in detail here.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A subframe, characterized in that: The vehicle comprises a subframe body (10), a steering gear (20), and an air conditioning bracket (30), wherein the subframe body (10) comprises a longitudinal beam (11) and a cross beam (12), and the two ends of the cross beam (12) are connected to the longitudinal beam (11); the steering gear (20) extends transversely, and the two ends of the steering gear (20) are connected to the longitudinal beam (11) through a first fixing component (40), and the middle part of the steering gear (20) is connected to the cross beam (12) through a second fixing component (50); the air conditioning bracket (30) is arranged above the steering gear (20), and part of the components in the first fixing component (40) are located between the steering gear (20) and the air conditioning bracket (30), and are connected to the air conditioning bracket (30), and the air conditioning bracket (30) is connected to the vehicle body.

2. The subframe according to claim 1, characterized in that: The air conditioner bracket (30) is connected to the longitudinal beam (11) and the cross beam (12) on the auxiliary frame body (10) via a third fixing assembly (60).

3. The subframe according to claim 2, characterized in that: The longitudinal beam (11) comprises a first longitudinal beam (111) and a second longitudinal beam (112); the cross beam (12) comprises a first cross beam (121) and a second cross beam (122); the first cross beam (121) and the second cross beam (122) are arranged in parallel, and there is a spacing between the first cross beam (121) and the second cross beam (122); two ends of the first cross beam (121) and the second cross beam (122) are respectively connected to the first longitudinal beam (111) and the second longitudinal beam (112).

4. The subframe according to claim 3, characterized in that: The first longitudinal beam (111) and the second longitudinal beam (112) both include a longitudinal beam upper plate (11a), a longitudinal beam lower plate (11b), a first inner reinforcing plate (11c), and a second inner reinforcing plate (11d); the longitudinal beam upper plate (11a) and the longitudinal beam lower plate (11b) are welded to form a whole; the first inner reinforcing plate (11c) and the second inner reinforcing plate (11d) are welded inside the longitudinal beam upper plate (11a) and the longitudinal beam lower plate (11b); and both ends of the first inner reinforcing plate (11c) are welded to the longitudinal beam upper plate (11a) and the longitudinal beam lower plate (11b); the second inner reinforcing plate (11d) is arranged below the first inner reinforcing plate (11c), and the second inner reinforcing plate (11d) is welded to the longitudinal beam lower plate (11b).

5. The subframe according to claim 4, characterized in that: The first fixing assembly (40) comprises a first bracket (41), a first sleeve (42), and a first fastener (43); the top of the first bracket (41) is connected to the air conditioning bracket (30); the bottom of the first bracket (41) is connected to the first sleeve (42); the first fastener (43) passes through the second inner reinforcement plate (11d), the first sleeve (42), the bottom of the first bracket (41) in sequence from bottom to top, and is fastened to the steering gear housing at both ends of the steering gear (20).

6. The subframe according to claim 5, characterized in that: The first bracket (41) comprises a first transverse support arm (41a), a first oblique support arm (41b), and a second transverse support arm (41c); the first transverse support arm (41a) and the second transverse support arm (41c) are arranged in parallel; the top end of the first oblique support arm (41b) is connected to one end of the first transverse support arm (41a); the bottom end of the first oblique support arm (41b) is connected to one end of the second transverse support arm (41c) facing the first transverse support arm (41a); the first transverse support arm (41a) is connected to the air conditioner bracket (30); and the second transverse support arm (41c) is connected to the first sleeve (42).

7. The subframe according to claim 6, characterized in that: The first sleeve (42) comprises a first disc portion (42a) and a first columnar portion (42b); the first disc portion (42a) is arranged at the top end of the first columnar portion (42b); a convex ring (421) is provided on the first disc portion (42a); a clamping groove (411) is provided at the bottom of the second transverse support arm (41c); the first sleeve (42) is connected to the second transverse support arm (41c) by clamping the convex ring (421) and the clamping groove (411); the first columnar portion (42b) passes through the longitudinal beam upper plate (11a) and is connected to the longitudinal beam upper plate (11a).

8. The subframe according to claim 3, characterized in that: The second fixing assembly (50) includes a second sleeve (51) and a second fastener (52), the second sleeve (51) includes a second disc portion and a second columnar portion, the second disc portion is arranged at the top end of the second columnar portion, the second columnar portion passes through the top of the second beam (122) and is connected to the second beam (122), the second fastener (52) passes through the bottom of the second beam (122), the second columnar portion, and the second disc portion in sequence from bottom to top, and is fastened to the steering gear housing.

9. The subframe according to claim 3, characterized in that: The third fixing assembly (60) comprises a second bracket (61), a third sleeve (62), and a third fastener (63); the second bracket (61) is mounted on the first longitudinal beam (111), the second longitudinal beam (112), and the first cross beam (121); the third sleeve (62) comprises a third disc portion and a third columnar portion; the third disc portion is arranged at the top end of the third columnar portion; the third columnar portion passes through the second bracket (61) and is connected to the second bracket (61); the third fastener (63) passes through the third columnar portion, the third disc portion, and is fastened to the air conditioner bracket (30) in sequence from bottom to top.

10. The subframe according to claim 3, characterized in that: The steering gear (20) is arranged between the first cross beam (121) and the second cross beam (122), and is arranged parallel to the first cross beam (121) and the second cross beam (122); the first longitudinal beam (111), the second longitudinal beam (112), and the second cross beam (122) are all provided with mounting points of the steering gear (20); the first fixing component (40) is arranged at the mounting points of the steering gear (20) on the first longitudinal beam (111) and the second longitudinal beam (112); and the second fixing component (50) is arranged at the mounting point of the steering gear (20) on the second cross beam (122).

11. The subframe according to claim 3, characterized in that: The air conditioning bracket (30) comprises a transverse arm (31), a longitudinal arm (32), and an extension arm (33); the transverse arm (31) is arranged parallel to the crossbeam (12) and is arranged above the steering gear (20); the longitudinal arm (32) is arranged on both sides of the transverse arm (31) and is connected to the end of the transverse arm (31); the extension arm (33) is arranged on one side of the transverse arm (31) and is connected to the middle of the transverse arm (31).

12. The subframe according to claim 11, characterized in that: The cross arm (31) is connected to the first fixing component (40) at the mounting point of the steering gear (20) on the first longitudinal beam (111) and the second longitudinal beam (122); the longitudinal arm (31) is mounted at the mounting point of the air conditioning bracket (30) on the first longitudinal beam (111) and the second longitudinal beam (122) through the third fixing component (60), and the extension arm (33) is mounted at the mounting point of the air conditioning bracket (30) on the first cross beam (121) through the third fixing component (60).

13. A vehicle, characterized in that: Comprising the subframe as described in any one of claims 1-12.

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