Axle assembly and vehicle

Abstract

The application relates to the technical field of axles, and discloses an axle assembly and a vehicle, which comprises an axle body and two hub supports, the two hub supports are fixedly installed on the two sides of the axle body along a first direction, an installation space is formed in the hub support, and an elastic piece installation part for installing an elastic piece for supporting a frame along a second direction is further arranged in the installation space, the position of the elastic piece installation part is lower than the axle body along the second direction, and the first direction is perpendicular to the second direction. Therefore, the space occupation of the suspension system and the chassis in the height direction of the vehicle is reduced, more space is left for the arrangement of a battery pack and an oil tank, and the arrangement requirements of the new energy vehicle are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of axle, in particular to an axle assembly and a vehicle. BACKGROUND

[0002] With the rapid development of new energy vehicles, the weight of the whole vehicle is getting larger and larger, and the layout space of the chassis is getting smaller and smaller, so higher performance requirements are put forward for the suspension system. Among them, the axle assembly as an important part of the suspension system directly affects the performance of the suspension system.

[0003] In related technologies, in order to improve the performance of the suspension system, some vehicle models use whole axle five-link suspension structure to bear the vehicle body. However, the whole axle five-link suspension system and the chassis currently occupy a large space in the height direction of the vehicle, and it is difficult to leave more space for the layout of the battery pack and the fuel tank. SUMMARY

[0004] The present application provides an axle assembly and a vehicle, which solves the problem of large space occupation of the axle assembly in the height direction of the vehicle, and can leave more space for the layout of the battery pack and the fuel tank to meet the layout requirements of new energy vehicles.

[0005] In order to achieve the above purpose, the main technical scheme adopted by the present application includes:

[0006] In a first aspect, the present application provides an axle assembly, comprising:

[0007] an axle body;

[0008] two hub supports, which are fixedly installed on both sides of the axle body along a first direction, and a mounting space is formed in the hub support, and the mounting space further has an elastic element mounting portion for mounting an elastic element for supporting a vehicle frame along a second direction, and the position of the elastic element mounting portion is lower than the axle body along the second direction, wherein the first direction is perpendicular to the second direction.

[0009] The axle assembly provided by the first aspect of the present application is advantageous in reducing the space occupation of the elastic element for supporting the vehicle frame in the height direction of the vehicle by arranging the elastic element mounting portion with a lower height than the axle body in the hub support, thereby reducing the space occupation of the suspension system and the chassis in the height direction of the vehicle, leaving more space for the layout of the battery pack and the fuel tank, meeting the layout requirements of new energy vehicles, and integrating the elastic element mounting portion into the hub support, which is advantageous in reducing the number of parts and reducing the process assembly cost.

[0010] Optionally, the hub support comprises a bottom plate, a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate, the first mounting plate and the third mounting plate are oppositely arranged and spaced apart along the first direction, the second mounting plate and the fourth mounting plate are oppositely arranged and spaced apart along the third direction, the first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate are fixedly connected with the bottom plate, and the second mounting plate and the fourth mounting plate are connected between the first mounting plate and the third mounting plate, the bottom plate, the first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate jointly form an installation space, and the elastic member mounting portion is arranged on the inner surface of the bottom plate, wherein the third direction is perpendicular to the first direction and the second direction.

[0011] Optionally, the outer surface of the first mounting plate and the outer surface of the fourth mounting plate each have a shock absorber mounting portion for mounting a shock absorber.

[0012] Optionally, the first mounting plate and the fourth mounting plate each have a first protruding portion away from the hub support along the third direction, and the shock absorber mounting portion is a shock absorber mounting hole formed in the first protruding portion.

[0013] Optionally, the outer surface of the first mounting plate further has a mounting hole, and the hub support is fixedly connected with the axle body through the mounting hole.

[0014] Optionally, the hole depth of the mounting hole is h, and the relationship 15mm≤h≤20mm is satisfied.

[0015] Optionally, the outer surface of the first mounting plate further has a trailing arm mounting portion for mounting a trailing arm, the trailing arm mounting portion is arranged between the shock absorber mounting portion and the mounting hole, and the trailing arm mounting portion is spaced apart from the shock absorber mounting portion and the mounting hole.

[0016] Optionally, the first mounting plate has a second protruding portion away from the first mounting plate along the second direction, and the trailing arm mounting portion is a trailing arm mounting hole formed in the second protruding portion.

[0017] Optionally, the outer surface of the second mounting plate has a trailing arm mounting portion for mounting a trailing arm.

[0018] Optionally, the second mounting plate has a third protruding portion away from the third mounting plate along the third direction, and the trailing arm mounting portion is a trailing arm mounting hole formed in the third protruding portion.

[0019] Optionally, the third mounting plate has a hub bearing mounting portion and a brake caliper mounting portion.

[0020] Optionally, the third mounting plate comprises a first sub-plate and a second sub-plate connected in sequence, the second sub-plate is fixedly connected with the bottom plate and the fourth mounting plate, and the first sub-plate and the second sub-plate are fixedly connected with the second mounting plate.

[0021] The hub bearing mounting portion and the brake caliper mounting portion are arranged on the first sub-plate, the first sub-plate and the second sub-plate have a first included angle, the second sub-plate and the bottom plate have a second included angle, and the first included angle and the second included angle are both greater than 90°.

[0022] Optionally, along the third direction, the second sub-plate comprises a first segment, a second segment and a third segment connected in sequence, the first segment is fixedly connected with the fourth mounting plate, the third segment is fixedly connected with the second mounting plate, and the thickness of the first segment and the thickness of the third segment are both greater than the thickness of the second segment.

[0023] Optionally, the axle assembly further comprises a first mounting bracket, the first mounting bracket comprises a first mounting piece and a second mounting piece, the first mounting piece and the second mounting piece are fixedly arranged with the axle body, and the first mounting piece is fixedly connected with the second mounting piece, and the first mounting piece, the second mounting piece and the axle body jointly form an installation cavity.

[0024] In a second aspect, the embodiments of the present application provide a vehicle comprising the axle assembly in the first aspect.

[0025] The vehicle provided by the embodiments of the second aspect of the present application is provided with the above-mentioned axle assembly, the elastic piece mounting portion with a height lower than the axle body is arranged in the hub bracket, which is beneficial to reduce the space occupation of the elastic piece for supporting the vehicle frame in the vehicle height direction, and further beneficial to reduce the space occupation of the suspension system and the chassis in the vehicle height direction, so as to provide more space for the arrangement of the battery pack and the oil tank, meet the arrangement requirements of the new energy vehicle, and meanwhile, the integration of the elastic piece mounting portion into the hub bracket is beneficial to reduce the number of parts and reduce the process assembly cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0027] Figure 1 A front view of the axle assembly provided by an embodiment of the present application is provided;

[0028] Figure 2 A top view of the axle assembly provided by an embodiment of the present application is provided;

[0029] Figure 3 A first perspective view of the axle assembly provided by an embodiment of the present application is provided;

[0030] Figure 4 A perspective view of the hub bracket provided by the first embodiment of the present application is provided.

[0031] Figure 5 A perspective view of a hub bracket provided for a second embodiment of the present application;

[0032] Figure 6 A perspective view of a hub bracket provided for a third embodiment of the present application;

[0033] Figure 7 A partial enlarged view of a second perspective view of an axle assembly provided for an embodiment of the present application;

[0034] Figure 8 A partial cross-sectional view of an axle body and a hub bracket provided for an embodiment of the present application.

[0035]

BRIEF DESCRIPTION OF DRAWINGS

[0036] An axle assembly 100;

[0037] An axle body 1;

[0038] A hub bracket 2; a mounting space 201; an elastic member mounting portion 202; a bottom plate 21; a first mounting plate 22; a second mounting plate 23; a third mounting plate 24; a first sub-plate 241; a second sub-plate 242; a first section 2421; a second section 2422; a weight-reducing hole 24221; a third section 2423; a fourth mounting plate 25; a shock absorber mounting portion 26; a first protruding portion 27; a mounting hole 28; a control arm mounting portion 29; a second protruding portion 210; a trailing arm mounting portion 211; a third protruding portion 212; a hub bearing mounting portion 213; a brake caliper mounting portion 214;

[0039] A first mounting bracket 3; a first mounting member 31; a second mounting member 32; a mounting cavity 33;

[0040] A second mounting bracket 4;

[0041] A first direction X; a second direction Y; a third direction Z;

[0042] An elastic member 200; a shock absorber 300; a trailing arm 400. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an overly literal sense unless expressly so defined herein.

[0045] Reference throughout this application to "embodiment" means a particular example described herein, which can include a particular feature, structure, or characteristic. Each of the phrases "in one embodiment" and "in some embodiments" as used herein does not necessarily refer to the same embodiment, though it may. Moreover, each of the phrases "in one embodiment" and "in some embodiments" as used herein can, but need not necessarily, refer to the same embodiment or a different embodiment.

[0046] In the description of the application, it is necessary to note that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0047] The term "and / or" in this application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0048] "Multiple" appearing in this application refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0049] The axle assembly 100, suspension system and vehicle in this application are described in detail below with reference to the accompanying drawings.

[0050] As Figures 1-8As shown, the axle assembly 100 according to the embodiment of the first aspect of the present application comprises: an axle body 1 and two hub supports 2 along a first direction X, wherein the first direction X in the present application is the width direction of the vehicle, the two hub supports 2 are fixedly installed on the two sides of the axle body 1, an installation space 201 is formed in the hub support 2, and the installation space 201 further has an elastic element mounting portion 202 for mounting an elastic element 200 for supporting a frame along a second direction Y, the position of the elastic element mounting portion 202 is lower than the axle body along the second direction Y, and the second direction Y in the present application is the height direction of the vehicle, wherein the first direction X is perpendicular to the second direction Y.

[0051] It should be noted that, with the rapid development of new energy vehicles, the overall vehicle weight is getting larger and the chassis layout space is getting smaller, and therefore higher performance requirements are put forward for the suspension system, and the axle assembly as an important part of the suspension system directly affects the performance of the suspension system.

[0052] In the related art, in order to improve the performance of the suspension system, some vehicle models adopt a whole axle five-link suspension structure to bear the vehicle body, and the elastic element (shock absorbing spring) for supporting the frame is usually installed on the axle body or the trailing arm, which results in a higher height of the elastic element, and further results in a larger space occupation of the suspension system and the chassis in the height direction of the vehicle, that is, a higher height of the suspension system and the chassis, and it is difficult to leave more space for the arrangement of the battery pack and the fuel tank.

[0053] Based on this, the elastic element mounting portion 202 for mounting the elastic element 200 is integrated into the hub support 2, specifically, the elastic element 200 can be configured as but is not limited to a shock absorbing spring, the elastic element 200 extends along the second direction Y, one end of the elastic element 200 is fixedly connected with the elastic element mounting portion 202 in the installation space 201, and the other end is connected with the frame in the suspension system, so as to support the frame in the height direction of the vehicle, in this way, the elastic element 200 can provide a certain shock absorbing function for the frame during the operation of the vehicle.

[0054] Further, along the second direction Y, the position of the elastic element mounting portion 202 is lower than the axle body, that is, part of the elastic element 200 is arranged in the hub support 2, and in the height direction of the vehicle, the height of the elastic element mounting portion 202 of the elastic element 200 is lower than the axle body 1, in this way, by reducing the installation height of the elastic element mounting portion 202, the space occupation of the elastic element 200 in the height direction of the vehicle can be reduced, and since the upper end of the elastic element 200 is connected with the frame, the overall height of the frame and the floor can be reduced, and further the space occupation of the suspension system and the chassis in the height direction of the vehicle can be reduced, which can leave more space for the arrangement of the battery pack and the fuel tank, and meet the arrangement requirements of the new energy vehicle.

[0055] It should be noted that the setting height of the elastic member mounting portion 202 needs to meet the ground clearance requirement to ensure that the vehicle has good passability, and the height difference between the elastic member mounting portion 202 and the bridge body needs to match the mounting point of the control arm. At the same time, the setting height of the elastic member mounting portion 202 is related to the height of the frame beam and the bridge body. It can be understood that the higher the height of the frame beam, the higher the height of the bridge body and the elastic member mounting portion 202.

[0056] Further, compared with the conventional installation of the elastic member 200 on the bridge body 1, the elastic member 200 is integrated into the hub bracket 2 in the present application, which can also reduce the setting of the mounting point of the bridge body 1, and is beneficial to simplify the manufacturing process of the bridge body 1. For example, the bridge body 1 can be constructed as a tubular structure and can be manufactured by casting process, and has high strength, which is beneficial to improve the overall strength of the axle assembly 100, so that the axle assembly 100 can bear greater weight, and is more suitable for new energy vehicles with heavy overall weight. At the same time, the elastic member mounting portion 202 is integrated into the hub bracket 2, and there is no need to arrange a special mounting structure for the elastic member 200 on the bridge body 1, which is beneficial to reduce the number of parts in the axle assembly 100 and reduce the process assembly cost.

[0057] According to the first aspect of the present application, the axle assembly 100 is provided by arranging the elastic member mounting portion 202 with a height lower than the bridge body in the hub bracket 2, which is beneficial to reduce the space occupation of the elastic member 200 for supporting the frame in the vehicle height direction, and further beneficial to reduce the space occupation of the suspension system and the chassis in the vehicle height direction, which can provide more space for the arrangement of the battery pack and the fuel tank, and meet the arrangement requirements of the new energy vehicle. At the same time, the integration of the elastic member mounting portion 202 into the hub bracket 2 is beneficial to reduce the number of parts and reduce the process assembly cost.

[0058] In some embodiments of the present application, as shown in Figures 4-6 The hub bracket 2 includes a bottom plate 21, a first mounting plate 22, a second mounting plate 23, a third mounting plate 24, and a fourth mounting plate 25.

[0059] The first mounting plate 22 and the third mounting plate 24 are oppositely arranged and spaced apart along the first direction X, that is, in the width direction of the vehicle. The second mounting plate 23 and the fourth mounting plate 25 are oppositely arranged and spaced apart along the third direction Z, that is, in the length direction of the vehicle. The third direction Z is perpendicular to the first direction X and the second direction Y. The first mounting plate 22, the second mounting plate 23, the third mounting plate 24, and the fourth mounting plate 25 are fixedly connected to the bottom plate 21. The second mounting plate 23 and the fourth mounting plate 25 are connected between the first mounting plate 22 and the third mounting plate 24. The bottom plate 21, the first mounting plate 22, the second mounting plate 23, the third mounting plate 24, and the fourth mounting plate 25 jointly form the mounting space 201. That is, the first mounting plate 22, the second mounting plate 23, the third mounting plate 24, and the fourth mounting plate 25 fixedly connected to the bottom plate 21 are sequentially connected end to end and surround the bottom plate 21, thereby forming a semi-closed frame structure with one end open. The mounting space 201 is inside the frame structure. Further, in some embodiments of the present application, the elastic member mounting portion 202 is arranged on the inner surface of the bottom plate 21. That is, during the operation of the vehicle, the bottom plate 21 of the hub bracket 2 is used to bear the elastic force of the elastic member 200, and cooperates with the semi-closed frame structure to concentrate the bearing force below the hub bracket 2, which is beneficial to improve the stability of the hub bracket 2 and further improve the overall strength of the axle assembly 100.

[0060] In some embodiments of the present application, as shown in Figure 2 , Figures 4-7 The outer surface of the first mounting plate 22 and the outer surface of the fourth mounting plate 25 each have a shock absorber mounting portion 26 for mounting a shock absorber 300. That is, the first mounting plate 22 and the second mounting plate 23 of the hub bracket 2 are also designed to integrate the shock absorber mounting portion 26, which is used to mount the shock absorber 300 of the vehicle. It can be understood that the shock absorbers 300 on the left and right sides of the vehicle are respectively mounted on the hub brackets 2 on the left and right sides of the axle body 1 along the first direction X (the width direction of the vehicle), and the force transmitted by the shock absorber 300 is borne by the hub bracket 2. This not only improves the functional integration of the hub bracket 2, but also eliminates the need for a dedicated mounting structure for the shock absorber 300 on the axle body 1, which is beneficial to reduce the number of parts in the axle assembly 100 and reduce the process assembly cost.

[0061] In some embodiments of the present application, as shown in Figure 4 and Figure 6As shown, the first mounting plate 22 and the fourth mounting plate 25 each have a first protruding portion 27 away from the hub bracket 2 along the third direction Z, and the shock absorber mounting portion 26 is a shock absorber mounting hole formed in the first protruding portion 27. Specifically, the first mounting plate 22 is provided with a first protruding portion 27 away from the hub bracket 2 along the third direction Z, and the fourth mounting plate 25 is provided with a first protruding portion 27 away from the hub bracket 2 along the third direction Z. The first protruding portion 27 of the first mounting plate 22 and the first protruding portion 27 of the fourth mounting plate 25 each have a shock absorber mounting hole, which can be understood as the shock absorber mounting portion 26. For example, the shock absorber 300 can be assembled by cooperating with the two shock absorber mounting holes through the bushing. The bushing serves as a flexible kinetic energy absorbing member and can absorb the impact force between the shock absorber 300 and the hub bracket 2, which is beneficial to improve the stability of the suspension system.

[0062] In some embodiments of the present application, an annular boss structure is arranged around the shock absorber mounting hole, which cooperates with the shock absorber 300 to install. In this way, it is beneficial to improve the cooperation accuracy of the shock absorber mounting hole and the shock absorber 300, and to improve the connection strength between the shock absorber mounting hole and the shock absorber 300.

[0063] In some embodiments of the present application, as shown in Figure 4 and Figure 5 The outer surface of the first mounting plate 22 also has a mounting hole 28, and the hub bracket 2 is fixedly connected with the axle body 1 through the mounting hole 28. Specifically, the hub bracket 2 can be made of cast steel. In this way, the structure is more flexible, and is also compatible with welding, has high reliability, and meets the lightweight design requirement. Further, the axle body 1 and the hub bracket 2 are assembled by cooperating with the mounting hole 28. Optionally, the axle body 1 can be formed as a tubular structure. For example, the axle body 1 can be directly inserted into the mounting hole 28 and fixed by welding. In this way, by welding the axle body 1 in the mounting hole 28 of the hub bracket 2, it is beneficial to improve the connection strength of the axle body 1 and the hub bracket 2, and the welding process is simple and can ensure the welding quality, thereby further improving the overall strength of the axle assembly 100, so that the axle assembly 100 can bear a larger weight and is more suitable for new energy vehicles with a heavier overall weight.

[0064] In some embodiments of the present application, as shown in Figure 8As shown, the hole depth of the mounting hole 28 satisfies the relationship 15mm≤h≤20mm. That is, the hole depth of the mounting hole 28 for mounting the axle body 1 in the hub bracket 2 is controlled between 15mm and 20mm. If the hole depth of the mounting hole 28 is too small, for example, less than 15mm, it is difficult to ensure that the axle body 1 and the hub bracket 2 form a sufficient connection length, thereby reducing the load capacity of the axle assembly 100. If the hole depth of the mounting hole 28 is too large, for example, greater than 20mm, assuming that the axle body 1 is welded to the mounting hole 28, the end of the axle body 1 extending into the mounting hole 28 is not fixed to the mounting hole 28. When the axle body 1 extends too far into the mounting hole 28, the axle body 1 and the mounting hole 28 are prone to abnormal noise, thereby affecting the NVH performance of the axle assembly 100.

[0065] Based on this, the hole depth of the mounting hole 28 in the present application is controlled between 15mm and 20mm. For example, the hole depth of the mounting hole 28 can be 15mm, 16mm, 17mm, 18mm, 19mm, or 20mm, which is set according to actual needs. In this way, the axle body 1 and the hub bracket 2 can have a certain fitting length. After the axle body 1 is inserted into the mounting hole 28 and welded, the hub bracket 2 can provide good support to the axle body 1, which is beneficial to improve the load capacity of the axle assembly 100.

[0066] In some embodiments of the present application, as shown in Figure 4 and Figure 5 As shown, the outer surface of the first mounting plate 22 further has a control arm mounting portion 29 for mounting a control arm. The control arm mounting portion 29 is arranged between the shock absorber mounting portion 26 and the mounting hole 28, and the control arm mounting portion 29 is spaced apart from the shock absorber mounting portion 26 and the mounting hole 28. That is, the first mounting plate 22 of the hub bracket 2 further integrates the control arm mounting portion 29. The control arm mounting portion 29 is used to mount a control arm of a vehicle. For example, when the vehicle is provided with a Watt's linkage assembly, the control arm mounting portion 29 can be used to mount a transverse link in the Watt's linkage assembly. In this way, the functional integration of the hub bracket 2 is further improved, which is beneficial to reduce the number of parts in the axle assembly 100, thereby reducing the process assembly cost.

[0067] Further, along the third direction Z, the control arm mounting portion 29 is arranged between the shock absorber mounting portion 26 and the mounting hole 28, and the control arm mounting portion 29 is spaced apart from the shock absorber mounting portion 26 and the mounting hole 28. In this way, interference during assembly of each component can be avoided, and the stability after mounting of the control arm can be improved.

[0068] In some embodiments of the present application, as shown in Figure 4 and Figure 5As shown, the first mounting plate 22 has a second protruding portion 210 away from the first mounting plate 22 along the first direction X, and the lateral arm mounting portion 29 is a lateral arm mounting hole configured on the second protruding portion 210.

[0069] Specifically, the first mounting plate 22 is provided with two second protruding portions 210 away from the first mounting plate 22 along the first direction X, and each of the two second protruding portions 210 has a lateral arm mounting hole, which can be understood as the lateral arm mounting portion 29. For example, the lateral arm can be assembled with the two lateral arm mounting holes through a bushing. The bushing serves as a flexible kinetic energy absorbing member and can absorb the impact force between the lateral arm and the hub support 2, which is beneficial to improve the stability of the suspension system.

[0070] In some embodiments of the present application, an annular boss structure is arranged around the lateral arm mounting hole. The lateral arm is mounted in cooperation with the annular boss structure. In this way, the cooperation precision of the lateral arm mounting hole and the lateral arm is improved, and the connection strength between the lateral arm mounting hole and the lateral arm is improved.

[0071] In some embodiments of the present application, as shown in Figure 5 and Figure 6 The outer surface of the second mounting plate 23 has a trailing arm mounting portion 211 for mounting a trailing arm 400. That is, the second mounting plate 23 of the hub support 2 is designed in an integrated manner, and the trailing arm mounting portion 211 can be used to mount the trailing arm 400 of the vehicle. It can be understood that along the first direction X (the width direction of the vehicle), two trailing arms 400 are arranged on the left and right sides of the hub support 2 of the axle body 1, and the hub support 2 is used to support the trailing arm 400 and transmit the excitation from the road to the trailing arm 400 through the hub support 2. In this way, the functional integration of the hub support 2 is further improved, and the number of components in the axle assembly 100 is also reduced, thereby reducing the process assembly cost.

[0072] In some embodiments of the present application, as shown in Figure 5 and Figure 6 The second mounting plate 23 has a third protruding portion 212 away from the third mounting plate 24 along the third direction Z, and the trailing arm mounting portion 211 is a trailing arm mounting hole configured on the third protruding portion 212.

[0073] Specifically, the second mounting plate 23 is provided with two third protruding portions 212 away from the second mounting plate 23 along the third direction Z, and each of the two third protruding portions 212 has a trailing arm mounting hole, which can be understood as the trailing arm mounting portion 211. For example, the trailing arm 400 can be assembled with the two trailing arm mounting holes through a bushing. In this way, the bushing serves as a flexible kinetic energy absorbing member and can absorb the impact force between the trailing arm 400 and the hub support 2, which is beneficial to improve the stability of the suspension system.

[0074] In some embodiments of the present application, an annular boss structure is arranged around the longitudinal arm mounting hole, and the longitudinal arm 400 is mounted in cooperation with the annular boss structure. In this way, the cooperation accuracy of the longitudinal arm mounting hole and the longitudinal arm 400 is improved, and the connection strength between the longitudinal arm mounting hole and the longitudinal arm 400 is improved.

[0075] In some embodiments of the present application, as shown in Figures 4-6 The third mounting plate 24 has a hub bearing mounting portion 213 and a brake caliper mounting portion 214. That is, the third mounting plate 24 of the hub carrier 2 is designed to have the hub bearing mounting portion 213 and the brake caliper mounting portion 214 integrated. For example, the hub bearing mounting portion 213 can be configured as four hub bearing mounting through holes, and the hub bearing is fixedly mounted on both sides of the third mounting plate 24 through the four hub bearing mounting through holes. Similarly, the brake caliper mounting portion 214 can be configured as two brake caliper mounting through holes, and the brake caliper is fixedly mounted on both sides of the third mounting plate 24 through the two brake caliper mounting through holes. In this way, the functional integration of the hub carrier 2 is further improved, and at the same time, the number of parts in the axle assembly 100 is reduced, and the process assembly cost is reduced.

[0076] In some embodiments of the present application, an annular boss structure can be arranged around the hub bearing mounting through hole and the brake caliper mounting through hole. In this way, the mounting accuracy and connection strength of the hub bearing mounting portion 213 and the hub bearing are improved, and the mounting accuracy and connection strength of the brake caliper mounting portion 214 and the brake caliper are improved, so that the brake system position can be maintained when the brake system is working.

[0077] In some embodiments of the present application, as shown in Figure 4 , Figure 5 and Figure 8 The third mounting plate 24 includes a first sub-plate 241 and a second sub-plate 242 connected in sequence, the second sub-plate 242 is fixedly connected with the bottom plate 21 and the fourth mounting plate 25, and the first sub-plate 241 and the second sub-plate 242 are both fixedly connected with the second mounting plate 23, and the hub bearing mounting portion 213 and the brake caliper mounting portion 214 are both arranged on the first sub-plate 241, as shown in Figure 8 The first sub-plate 241 and the second sub-plate 242 have a first included angle A, and the second sub-plate 242 and the bottom plate 21 have a second included angle B, and the first included angle A and the second included angle B are both greater than 90°.

[0078] Specifically, as shown in Figure 4As shown, one end of the second sub-plate 242 is fixedly connected with the bottom plate 21 along the second direction Y, and the other end is fixedly connected with the first sub-plate 241, wherein the first sub-plate 241 extends along the second direction Y, that is, the first sub-plate 241 is vertically arranged in the height direction of the vehicle, further, one end of the second sub-plate 242 is fixedly connected with the fourth mounting plate 25 along the third direction Z, and the other end is fixedly connected with the second mounting plate 23, and the first sub-plate 241 is also fixedly connected with the second mounting plate 23, and the first sub-plate 241 is provided with a hub bearing mounting portion 213 and a brake caliper mounting portion 214, so that when the hub bearing and the brake caliper apply a bearing force to the first sub-plate 241, the second mounting plate 23 can improve the anti-deformation ability of the first sub-plate 241, thereby improving the supporting effect of the first sub-plate 241.

[0079] Further, as shown in FIG. 2, Figure 8 Since the first included angle A between the first sub-plate 241 and the second sub-plate 242 is greater than 90°, and the second included angle B between the second sub-plate 242 and the bottom plate 21 is greater than 90°, when the first sub-plate 241 is subjected to a bearing force, the anti-tension ability of the first sub-plate 241 and the second sub-plate 242 can be improved under the action of the second sub-plate 242 and the bottom plate 21, which is beneficial to reduce the stress deformation degree of the first sub-plate 241 and the second sub-plate 242, thereby improving the overall strength of the hub support 2.

[0080] In some embodiments of the present application, as shown in FIG. 2, Figures 4-6 Along the third direction Z, the second sub-plate 242 includes a first segment 2421, a second segment 2422 and a third segment 2423 connected in sequence, the first segment 2421 is fixedly connected with the fourth mounting plate 25, the third segment 2423 is fixedly connected with the second mounting plate 23, and the thickness of the first segment 2421 and the thickness of the third segment 2423 are both greater than the thickness of the second segment 2422. It should be noted that when the first sub-plate 241 is subjected to a bearing force, the first sub-plate 241 presses down the second sub-plate 242, so that the second sub-plate 242 has a downward bending deformation trend, and in the present application, as shown in FIG. 2, Figure 6 Along the third direction Z, the first segment 2421 of the second sub-plate 242 is fixedly connected with the fourth mounting plate 25, and the third segment 2423 of the second sub-plate 242 is fixedly connected with the second mounting plate 23, so that the first segment 2421 and the third segment 2423 of the second sub-plate 242 are subjected to greater stress, and in some embodiments of the present application, the thickness of the first segment 2421 and the thickness of the third segment 2423 are both set to be greater than the thickness of the second segment 2422, thereby improving the anti-deformation ability of the first segment 2421 and the third segment 2423 of the second sub-plate 242, and at the same time, since the second segment 2422 of the second sub-plate 242 is subjected to less stress, reducing the thickness of the second segment 2422 can reduce the weight of the hub support 2, thereby ensuring the reliability of the hub support 2 while taking into account the light weight.

[0081] In some embodiments of the present application, as shown in Figures 4-6 That is, the weight-reducing hole 24221 can be arranged on the second section 2422 of the second sub-plate 242 while ensuring the reliability of the hub bracket 2, so as to further reduce the weight of the hub bracket 2, thereby further improving the lightness level of the hub bracket 2. For example, according to the simulation stress analysis, the weight-reducing hole 24221 can be configured as an inverted triangular hole, and of course other shapes can be arranged as needed, which is not specifically limited here.

[0082] In some embodiments of the present application, as shown in Figures 1-3 Further comprising: a first mounting bracket 3, the first mounting bracket 3 comprising a first mounting piece 31 and a second mounting piece 32, the first mounting piece 31 and the second mounting piece 32 are both fixedly arranged on the axle body 1, and the first mounting piece 31 is fixedly connected with the second mounting piece 32, and the first mounting piece 31, the second mounting piece 32 and the axle body 1 jointly form a mounting cavity 33.

[0083] Specifically, the first mounting bracket can provide mounting points for the longitudinal arms 400 and the transverse arms in the suspension system. For example, assuming that the suspension structure has four longitudinal arms 400, two of which are connected with the hub bracket 2, and one of the remaining two longitudinal arms 400 is connected with the first mounting bracket 3. Assuming that one of the transverse arms in the Watt's linkage assembly is connected with the hub bracket 2, the other transverse arm is connected with the first mounting bracket 3. It can be understood that the first mounting bracket 3 is arranged on the axle body 1 away from the hub bracket 2 connected with the transverse arm.

[0084] Further, in some embodiments of the present application, the first mounting piece 31 of the first mounting bracket 3 is used to mount the longitudinal arm 400, and the second mounting piece 32 of the first mounting bracket 3 is used to mount the transverse arm. The first mounting piece 31 and the second mounting piece 32 are both welded on the axle body 1, and the first mounting piece 31 and the second mounting piece 32 are welded through a welding surface and fixed through bolt connection, so that the first mounting piece 31 and the second mounting piece 32 can support each other. At the same time, the first mounting piece 31, the second mounting piece 32 and the axle body 1 jointly form a mounting cavity 33. Such arrangement can greatly improve the strength of the first mounting bracket 3, which is conducive to improving the stability of the longitudinal arm 400 and the transverse arm mounted on the first mounting bracket 3, and further conducive to improving the overall strength of the axle assembly 100.

[0085] It should be noted that the first mounting member 31 and the second mounting member 32 can be configured as an integral molding member, wherein the first mounting member 31 comprises a first plate, a second plate and a third plate connected in sequence, wherein the first plate and the second plate have an included angle, and the second plate and the third plate have an included angle, so that the first mounting member 31 is formed with a semi-enclosed space, thereby further improving the strength of the first mounting bracket 3.

[0086] In some embodiments of the present application, as shown in Figure 1 and Figure 2 It further comprises a second mounting bracket 4, the second mounting bracket 4 is fixedly arranged on the axle body 1, and the second mounting bracket 4 is an integral molding member. Specifically, assuming that the suspension structure has four trailing arms 400, two of which are connected with the hub bracket 2, one of the remaining two is connected with the first mounting bracket 3, and the other is connected with the second mounting bracket 4, which is an integral molding member. Among them, the second mounting bracket 4 can be formed with a semi-enclosed space, so as to save cost and improve the strength of the second mounting bracket 4.

[0087] The vehicle according to the second aspect of the present application comprises the axle assembly 100 according to the first aspect of the present application.

[0088] According to the vehicle provided by the second aspect of the present application, by arranging the above-mentioned axle assembly 100, and by arranging the elastic member mounting portion 202 with a height lower than that of the axle body in the hub bracket 2, the space occupied by the elastic member 200 for supporting the vehicle body in the vehicle height direction is reduced, thereby reducing the space occupied by the suspension system and the chassis in the vehicle height direction, and more space is provided for the arrangement of the battery pack and the oil tank, thereby meeting the arrangement requirements of the new energy vehicle. Meanwhile, the integration of the elastic member mounting portion 202 into the hub bracket 2 helps to reduce the number of parts and the process assembly cost.

[0089] It should be further noted that the terms “comprising”, “containing” or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement “comprising a” does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0090] The various embodiments in the specification are described in progressive manner, and the same or similar parts among the various embodiments can be mutually referred to, and each embodiment focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0091] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

[0092] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. An axle assembly comprising: The axle body comprises: Two hub supports, which are respectively fixedly installed on both sides of the axle body along a first direction, and have an installation space formed therein, and an elastic element installation portion for installing an elastic element for supporting a frame along a second direction, the position of the elastic element installation portion being lower than the axle body along the second direction, wherein the first direction is perpendicular to the second direction; The hub support comprises a bottom plate, a first installation plate, a second installation plate, a third installation plate and a fourth installation plate, the first installation plate and the third installation plate being oppositely arranged and spaced apart along the first direction, the second installation plate and the fourth installation plate being oppositely arranged and spaced apart along a third direction, the first installation plate, the second installation plate, the third installation plate and the fourth installation plate being fixedly connected with the bottom plate, and the second installation plate and the fourth installation plate being connected between the first installation plate and the third installation plate, the bottom plate, the first installation plate, the second installation plate, the third installation plate and the fourth installation plate collectively forming the installation space, and the elastic element installation portion being provided on the inner surface of the bottom plate, wherein the third direction is perpendicular to the first direction and the second direction; The outer surface of the first installation plate further has an installation hole, and the hub support is fixedly connected with the axle body through the installation hole. The outer surface of the first installation plate and the outer surface of the fourth installation plate each have a shock absorber installation portion for installing a shock absorber.

2. The axle assembly of claim 1, wherein, The first installation plate and the fourth installation plate each have a first protruding portion away from the hub support along the third direction, and the shock absorber installation portion is a shock absorber installation hole formed in the first protruding portion.

3. The axle assembly of claim 2, wherein, The hole depth of the installation hole is h, satisfying the relationship 15mm≤h≤20mm.

4. The axle assembly of claim 1, wherein, The outer surface of the first installation plate further has a trailing arm installation portion for installing a trailing arm, the trailing arm installation portion being provided between the shock absorber installation portion and the installation hole, and being spaced apart from the shock absorber installation portion and the installation hole.

5. The axle assembly of claim 3, wherein, The first installation plate has a second protruding portion away from the first installation plate along the first direction, and the trailing arm installation portion is a trailing arm installation hole formed in the second protruding portion.

6. The axle assembly of claim 5, wherein, The outer surface of the second installation plate has a trailing arm installation portion for installing a trailing arm.

7. The axle assembly of claim 1, wherein, The second installation plate has a third protruding portion away from the third installation plate along the third direction, and the trailing arm installation portion is a trailing arm installation hole formed in the third protruding portion.

8. The axle assembly of claim 7, wherein, The third installation plate has a hub bearing installation portion and a brake caliper installation portion.

9. The axle assembly of claim 1, wherein, The third installation plate comprises a first sub-plate and a second sub-plate connected in sequence, the second sub-plate being fixedly connected with the bottom plate and the fourth installation plate, and the first sub-plate and the second sub-plate each being fixedly connected with the second installation plate; 10. The axle assembly of claim 9, wherein, The hub bearing installation portion and the brake caliper installation portion are each provided on the first sub-plate, the first sub-plate and the second sub-plate having a first included angle therebetween, and the second sub-plate and the bottom plate having a second included angle therebetween, the first included angle and the second included angle each being greater than 90°. ​ 11. The axle assembly of claim 10, wherein, In the third direction, the second sub-plate comprises a first segment, a second segment and a third segment connected in sequence, the first segment is fixedly connected with the fourth mounting plate, the third segment is fixedly connected with the second mounting plate, and the thickness of the first segment and the thickness of the third segment are both greater than the thickness of the second segment.

12. The axle assembly of any one of claims 1-11, wherein, Also comprising: The first mounting bracket comprises a first mounting piece and a second mounting piece, the first mounting piece and the second mounting piece are fixedly provided with the axle body, and the first mounting piece is fixedly connected with the second mounting piece, and the first mounting piece, the second mounting piece and the axle body jointly form a mounting cavity.

13. A vehicle characterized by comprising: The axle assembly comprises the axle assembly according to any one of claims 1-12.

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