Axle assembly and vehicle

Abstract

The invention relates to the technical field of axles, and discloses an axle assembly and a vehicle, the axle assembly comprises an axle body and two hub supports, in the first direction, the two hub supports are fixedly installed on the two sides of the axle body correspondingly, and installation spaces are formed in the hub supports; an elastic piece mounting part used for mounting an elastic piece for supporting the frame in the second direction is further arranged in the mounting space, the position of the elastic piece mounting part is lower than that of the axle body in the second direction, and the first direction is perpendicular to the second direction. Therefore, space occupation of the suspension system and the chassis in the height direction of the vehicle is reduced, larger space can be vacated for arrangement of a battery pack and an oil tank, and the arrangement requirement of the new energy vehicle is met.

Description

Technical Field

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

[0002] With the rapid development of new energy vehicles, the weight of the vehicle is getting heavier and the chassis layout space is getting smaller, which puts higher performance requirements on the suspension system. Among them, the axle assembly is an important part of the suspension system, and its design quality directly affects the performance of the suspension system.

[0003] In the related technology, in order to improve the performance of the suspension system, some models use an integral bridge five-link suspension structure to support the vehicle body. However, the current integral bridge five-link suspension system and chassis occupy a large space in the height direction of the vehicle, making it difficult to free up more space for the layout of the battery pack and fuel tank. Summary of the invention

[0004] The present application provides an axle assembly and a vehicle, which solves the problem that the axle assembly occupies a large space in the height direction of the vehicle, and can free up more space for the layout of battery packs and fuel tanks to meet the layout requirements of new energy vehicles.

[0005] In order to achieve the above objectives, the main technical solutions adopted in this application include:

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

[0007] Axle body;

[0008] Two wheel hub brackets are respectively fixedly mounted on both sides of the axle body along a first direction, an installation space is formed in the wheel hub bracket, and the installation space also has an elastic member mounting portion for mounting an elastic member supporting the frame along a second direction, and along the second direction, the position of the elastic member mounting portion is lower than the axle body, wherein the first direction is perpendicular to the second direction.

[0009] According to the axle assembly proposed in the first aspect of the embodiment of the present application, by arranging an elastic part mounting portion whose height is lower than that of the axle body in the wheel hub bracket, it is beneficial to reduce the space occupied by the elastic parts for supporting the frame in the height direction of the vehicle, thereby helping to reduce the space occupied by the suspension system and the chassis in the height direction of the vehicle, and can free up more space for the arrangement of the battery pack and the fuel tank, meeting the layout requirements of new energy vehicles. At the same time, integrating the elastic part mounting portion into the wheel hub bracket is beneficial to reducing the number of parts and reducing the process assembly cost.

[0010] Optionally, the wheel hub bracket includes a base plate, a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate. Along the first direction, the first mounting plate and the third mounting plate are arranged opposite to each other and spaced apart. Along the third direction, the second mounting plate and the fourth mounting plate are arranged opposite to each other and spaced apart. The first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate are all fixedly connected to the base plate, and the second mounting plate and the fourth mounting plate are both connected between the first mounting plate and the third mounting plate. The base 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 base plate, wherein the third direction is perpendicular to both 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 both have a shock absorber mounting portion for mounting a shock absorber.

[0012] Optionally, the first mounting plate and the fourth mounting plate both have a first protrusion away from the wheel hub bracket along the third direction, and the shock absorber mounting portion is a shock absorber mounting hole constructed in the first protrusion.

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

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

[0015] Optionally, the outer surface of the first mounting plate further has a cross arm mounting portion for mounting the cross arm, the cross arm mounting portion is arranged between the shock absorber mounting portion and the mounting hole, and the cross 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 protrusion away from the first mounting plate along the second direction, and the cross arm mounting portion is a cross arm mounting hole constructed in the second protrusion.

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

[0018] Optionally, the second mounting plate has a third protrusion away from the third mounting plate along the third direction, and the longitudinal arm mounting portion is a longitudinal arm mounting hole constructed in the third protrusion.

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

[0020] Optionally, the third mounting plate includes a first sub-plate and a second sub-plate connected in sequence, the second sub-plate is fixedly connected to the bottom plate and the fourth mounting plate, and the first sub-plate and the second sub-plate are both fixedly connected to the second mounting plate;

[0021] The wheel hub bearing mounting part and the brake caliper mounting part are both arranged on the first sub-plate, there is a first angle between the first sub-plate and the second sub-plate, there is a second angle between the second sub-plate and the bottom plate, and both the first angle and the second angle are greater than 90°.

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

[0023] Optionally, it also includes: a first mounting bracket, the first mounting bracket includes a first mounting member and a second mounting member, the first mounting member and the second mounting member are both fixedly provided with the axle body, and the first mounting member is fixedly connected to the second mounting member, and the first mounting member, the second mounting member and the axle body jointly form a mounting cavity.

[0024] In a second aspect, an embodiment of the present application provides a vehicle including the axle assembly in the embodiment of the first aspect.

[0025] The vehicle proposed in the second aspect of the embodiment of the present application is provided with the above-mentioned axle assembly. By arranging an elastic part mounting portion in the wheel hub bracket whose height is lower than that of the axle body, it is beneficial to reduce the space occupied by the elastic parts for supporting the frame in the height direction of the vehicle, thereby helping to reduce the space occupied by the suspension system and the chassis in the height direction of the vehicle, and can free up more space for the arrangement of the battery pack and the fuel tank, thereby meeting the layout requirements of new energy vehicles. At the same time, integrating the elastic part mounting portion into the wheel hub bracket is beneficial to reducing the number of parts and reducing the process assembly cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A front view of an axle assembly provided in accordance with an embodiment of the present application;

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

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

[0030] Figure 4 A three-dimensional view of a wheel hub bracket provided in the first embodiment of the present application;

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

[0032] Figure 6 A three-dimensional view of a hub bracket provided in a third embodiment of the present application;

[0033] Figure 7 A partial enlarged view of a second viewing angle of an axle assembly provided by one embodiment of the present application;

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

[0035] [Description of Reference Numerals]

[0036] Axle assembly 100;

[0037] Axle body 1;

[0038] Wheel hub bracket 2; installation space 201; elastic member installation part 202; bottom plate 21; first installation plate 22; second installation plate 23; third installation plate 24; first sub-plate 241; second sub-plate 242; first section 2421; second section 2422; weight reduction hole 24221; third section 2423; fourth installation plate 25; shock absorber installation part 26; first protrusion 27; installation hole 28; transverse arm installation part 29; second protrusion 210; longitudinal arm installation part 211; third protrusion 212; wheel hub bearing installation part 213; brake caliper installation part 214;

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

[0040] A second mounting bracket 4;

[0041] First direction X; second direction Y; third direction Z;

[0042] Elastic member 200; shock absorber 300; longitudinal arm 400. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0045] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0048] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

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

[0050] like Figure 1-Figure 8As shown, the axle assembly 100 according to the first embodiment of the present application includes: an axle body 1 and two wheel hub brackets 2, along a first direction X, wherein the first direction X in the present application is the width direction of the vehicle, the two wheel hub brackets 2 are respectively fixedly installed on both sides of the axle body 1, and an installation space 201 is formed in the wheel hub bracket 2. The installation space 201 also has an elastic member installation portion 202 for installing an elastic member 200 supporting the frame along a second direction Y. Along the second direction Y, the position of the elastic member installation portion 202 is lower than the axle body. 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 weight of the vehicle is getting heavier and heavier, and the chassis layout space is getting smaller and smaller, which puts higher performance requirements on the suspension system. Among them, the axle assembly is an important part of the suspension system, and its design quality 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 use an integral bridge five-link suspension structure to support the vehicle body, and the elastic parts (shock-absorbing springs) currently used to support the frame are usually installed on the axle body or the longitudinal arms. This will result in a higher height of the elastic parts, which in turn causes the suspension system and chassis to occupy a larger space in the height direction of the vehicle, that is, the height of the suspension system and the chassis is relatively high, making it difficult to free up more space for the layout of the battery pack and the fuel tank.

[0053] Based on this, the present application integrates the elastic member mounting portion 202 for mounting the elastic member 200 into the wheel hub bracket 2. Specifically, the elastic member 200 can be constructed as but not limited to a shock-absorbing spring. The elastic member 200 extends along the second direction Y. One end of the elastic member 200 is fixedly connected to the elastic member mounting portion 202 in the mounting space 201, and the other end is connected to the frame in the suspension system for supporting the frame in the height direction of the vehicle. In this way, during the operation of the vehicle, the elastic member 200 can provide a certain shock-absorbing function for the frame.

[0054] Furthermore, along the second direction Y, the position of the elastic member mounting portion 202 is lower than the axle body, that is, part of the elastic member 200 is arranged in the wheel hub bracket 2, and in the height direction of the vehicle, the height of the elastic member mounting portion 202 of the elastic member 200 is lower than the axle body 1. By such arrangement, by lowering the installation height of the elastic member mounting portion 202, the space occupied by the elastic member 200 in the height direction of the vehicle can be reduced, and since the upper end of the elastic member 200 is connected to the frame, it is beneficial to reduce the overall height of the frame and the floor, and further helps to reduce the space occupied by the suspension system and the chassis in the height direction of the vehicle, and can free up more space for the arrangement of the battery pack and the fuel tank, thereby meeting the layout requirements of new energy vehicles.

[0055] It should be noted that the setting height of the elastic part 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 part mounting portion 202 and the bridge tube body needs to match the installation point of the control arm. At the same time, the setting height of the elastic part mounting portion 202 is related to the height of the frame beam and the axle body. It can be understood that the higher the height of the frame beam, the higher the height of the axle body and the elastic part mounting portion 202.

[0056] Furthermore, compared with the traditional method of installing the elastic member 200 on the axle body 1, the present application integrates the elastic member 200 into the wheel hub bracket 2, which can also reduce the setting of the installation points of the axle body 1, which is conducive to simplifying the manufacturing process of the axle body 1. For example, the axle body 1 can be constructed as a tubular structure, which can be manufactured through a casting process and has high strength, which is conducive to 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 heavier vehicle weight. At the same time, the elastic member mounting portion 202 is integrated into the wheel hub bracket 2, and there is no need to arrange a dedicated mounting structure for the elastic member 200 on the axle body 1, which is conducive to reducing the number of parts in the axle assembly 100 and reducing the process assembly cost.

[0057] According to the axle assembly 100 proposed in the first aspect of the embodiment of the present application, by setting an elastic member mounting portion 202 whose height is lower than that of the axle body in the wheel hub bracket 2, it is beneficial to reduce the space occupied by the elastic member 200 for supporting the frame in the vehicle height direction, thereby helping to reduce the space occupied by the suspension system and the chassis in the vehicle height direction, and can free up more space for the arrangement of the battery pack and the fuel tank, meeting the arrangement requirements of new energy vehicles. At the same time, integrating the elastic member mounting portion 202 into the wheel hub bracket 2 is beneficial to reducing the number of components and reducing the process assembly cost.

[0058] In some embodiments of the present application, Figure 4-Figure 6 As shown, the wheel hub bracket 2 includes a base plate 21 , a first mounting plate 22 , a second mounting plate 23 , a third mounting plate 24 and a fourth mounting plate 25 .

[0059] Among them, along the first direction X, that is, in the width direction of the vehicle, the first mounting plate 22 and the third mounting plate 24 are arranged opposite to each other and spaced apart, and along the third direction Z, wherein the third direction Z is perpendicular to the first direction X and the second direction Y, and the third direction Z in the present application is the length direction of the vehicle, that is, in the length direction of the vehicle, the second mounting plate 23 and the fourth mounting plate 25 are arranged opposite to each other and spaced apart, the first mounting plate 22, the second mounting plate 23, the third mounting plate 24, and the fourth mounting plate 25 are all fixedly connected to the bottom plate 21, and the second mounting plate 23 and the fourth mounting plate 25 are all connected between the first mounting plate 22 and the third mounting plate 24, and the bottom plate 21, the first mounting plate 22, the second mounting plate 23, the third mounting plate 24 and the fourth mounting plate The plates 25 together form an installation space 201, that is, the first installation plate 22, the second installation plate 23, the third installation plate 24 and the fourth installation plate 25, which are all fixedly connected to the base plate 21, are connected end to end in sequence and surround the base plate 21, thereby forming a semi-enclosed frame structure with one end open, and the interior of the frame structure is the installation space 201. Furthermore, in some embodiments of the present application, the elastic member mounting portion 202 is provided on the inner surface of the base plate 21, that is, during the operation of the vehicle, the base plate 21 of the wheel hub bracket 2 is used to bear the elastic force of the elastic member 200, and with the semi-enclosed frame structure, the bearing force is concentrated below the wheel hub bracket 2, which is beneficial to improving the stability of the wheel hub bracket 2, and further beneficial to improving the overall strength of the axle assembly 100.

[0060] In some embodiments of the present application, Figure 2 , Figure 4-Figure 7 As shown, the outer surface of the first mounting plate 22 and the outer surface of the fourth mounting plate 25 are provided with a shock absorber mounting portion 26 for mounting the shock absorber 300. That is to say, the first mounting plate 22 and the second mounting plate 23 of the wheel hub bracket 2 are also integrated with the shock absorber mounting portion 26, and the shock absorber mounting portion 26 is used to mount the shock absorber 300 of the vehicle. It can be understood that along the first direction X (the width direction of the vehicle), the shock absorbers 300 on the left and right sides of the vehicle are respectively mounted on the wheel hub bracket 2 on the left and right sides of the axle body 1, and the wheel hub bracket 2 carries the force transmitted by the shock absorber 300, which not only improves the functional integration of the wheel hub bracket 2, but also eliminates the need to arrange a special mounting structure for the shock absorber 300 on the axle body 1, and is also conducive to reducing the number of parts in the axle assembly 100 and reducing the process assembly cost.

[0061] In some embodiments of the present application, Figure 4 and Figure 6As shown, the first mounting plate 22 and the fourth mounting plate 25 both have a first protrusion 27 away from the wheel hub bracket 2 along the third direction Z, and the shock absorber mounting portion 26 is a shock absorber mounting hole constructed on the first protrusion 27. Specifically, the first mounting plate 22 is provided with a first protrusion 27 away from the wheel hub bracket 2 along the third direction Z, and the fourth mounting plate 25 is provided with a first protrusion 27 away from the wheel hub bracket 2 along the third direction Z. The first protrusion 27 of the first mounting plate 22 and the first protrusion 27 of the fourth mounting plate 25 both have shock absorber mounting holes. It can be understood that the shock absorber mounting hole is the shock absorber mounting portion 26. For example, the shock absorber 300 can be assembled with the two shock absorber mounting holes through a bushing. The bushing is used as a flexible kinetic energy absorber to absorb the impact force between the shock absorber 300 and the wheel 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 provided around the shock absorber mounting hole, and the annular boss structure is installed in coordination with the shock absorber 300. This is beneficial for improving the coordination accuracy between the shock absorber mounting hole and the shock absorber 300, and improving the connection strength between the shock absorber mounting hole and the shock absorber 300.

[0063] In some embodiments of the present application, Figure 4 and Figure 5 As shown, the outer surface of the first mounting plate 22 also has a mounting hole 28, and the wheel hub bracket 2 is fixedly connected to the axle body 1 through the mounting hole 28. Specifically, the wheel hub bracket 2 can adopt a cast steel process, so that the structural modeling is more flexible, and it is also compatible with welding, has higher reliability, and meets the lightweight design requirements. Further, the axle body 1 and the mounting hole 28 of the wheel hub bracket 2 are assembled together. Optionally, the axle body 1 can be constructed 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 to the mounting hole 28 of the wheel hub bracket 2, it is beneficial to improve the connection strength between the axle body 1 and the wheel hub bracket 2, and the welding process is simple, which can ensure the welding quality, and then it is beneficial to further improve the overall strength of the axle assembly 100, so that the axle assembly 100 can carry a larger weight and is more suitable for new energy vehicles with heavier vehicle weight.

[0064] In some embodiments of the present application, Figure 8As shown, the hole depth of the mounting hole 28 is h, which satisfies the relationship 15mm≤h≤20mm. That is to say, the hole depth of the mounting hole 28 for mounting the axle body 1 in the wheel hub bracket 2 of the present application is controlled between 15mm and 20mm. If the hole depth of the mounting hole 28 is small, for example, the hole depth of the mounting hole 28 is less than 15mm, it is difficult to ensure that the axle body 1 and the wheel hub bracket 2 form a sufficient connection length, thereby reducing the bearing capacity of the axle assembly 100. When the hole depth of the mounting hole 28 is small, for example, the hole depth of the mounting hole 28 is 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 into the mounting hole 28 too long, 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, and is set according to actual needs. Such a setting can ensure that the axle body 1 and the wheel hub bracket 2 have a certain matching length. When the axle body 1 is inserted into the mounting hole 28 and welded, the wheel hub bracket 2 can provide good support for the axle body 1, which is beneficial to increase the load-bearing weight of the axle assembly 100.

[0066] In some embodiments of the present application, Figure 4 and Figure 5 As shown, the outer surface of the first mounting plate 22 also has a cross arm mounting portion 29 for mounting a cross arm, and the cross arm mounting portion 29 is arranged between the shock absorber mounting portion 26 and the mounting hole 28, and the cross arm mounting portion 29 is spaced apart from the shock absorber mounting portion 26 and the mounting hole 28. In other words, the first mounting plate 22 of the wheel hub bracket 2 is also integrated with the cross arm mounting portion 29, and the cross arm mounting portion 29 is used to mount the cross arm of the vehicle. For example, when the vehicle is provided with a Watt's connecting rod assembly, the cross arm mounting portion 29 can be used to mount the transverse connecting rod in the Watt's connecting rod assembly. Such a design further improves the functional integration of the wheel hub bracket 2, helps to reduce the number of parts in the axle assembly 100, and thus reduces the process assembly cost.

[0067] Furthermore, along the third direction Z, the cross arm mounting portion 29 is arranged between the shock absorber mounting portion 26 and the mounting hole 28, and the cross arm mounting portion 29 is spaced apart from the shock absorber mounting portion 26 and the mounting hole 28. This can avoid interference during the assembly of the components and is also beneficial to improving the stability of the cross arm after installation.

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

[0069] Specifically, the first mounting plate 22 is provided with two second protrusions 210 away from the first mounting plate 22 along the first direction X, and the two second protrusions 210 both have a cross arm mounting hole. It can be understood that the cross arm mounting hole is the cross arm mounting portion 29. For example, the cross arm can be assembled with the two cross arm mounting holes through a bushing. The bushing is used as a flexible kinetic energy absorber to absorb the impact force between the cross arm and the wheel hub bracket 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 provided around the cross arm mounting hole, and the annular boss structure is installed in coordination with the cross arm. This is beneficial to improving the matching accuracy between the cross arm mounting hole and the cross arm, and improving the connection strength between the cross arm mounting hole and the cross arm.

[0071] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the outer surface of the second mounting plate 23 has a longitudinal arm mounting portion 211 for mounting the longitudinal arm 400. That is to say, the second mounting plate 23 of the wheel hub bracket 2 is integrated with the longitudinal arm mounting portion 211, which can be used to mount the longitudinal arm 400 of the vehicle. It can be understood that along the first direction X (the width direction of the vehicle), there are two longitudinal arms 400 on the left and right sides of the vehicle, which are respectively mounted on the wheel hub bracket 2 on the left and right sides of the axle body 1. The wheel hub bracket 2 is used to support the longitudinal arm 400 and transmit the excitation from the road surface to the longitudinal arm 400 through the wheel hub bracket 2. Such a configuration further improves the functional integration of the wheel hub bracket 2, and at the same time, it is also conducive to reducing the number of parts in the axle assembly 100 and reducing the process assembly cost.

[0072] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the second mounting plate 23 has a third protrusion 212 away from the third mounting plate 24 along the third direction Z, and the longitudinal arm mounting portion 211 is a longitudinal arm mounting hole constructed on the third protrusion 212 .

[0073] Specifically, the second mounting plate 23 is provided with two third protrusions 212 away from the second mounting plate 23 along the third direction Z. The two third protrusions 212 both have longitudinal arm mounting holes. It can be understood that the longitudinal arm mounting holes are the longitudinal arm mounting portions 211. For example, the longitudinal arm 400 can be assembled with the two longitudinal arm mounting holes through a bushing. In this way, the bushing is used as a flexible kinetic energy absorber to absorb the impact force between the longitudinal arm 400 and the wheel hub bracket 2, which is beneficial to improving the stability of the suspension system.

[0074] In some embodiments of the present application, an annular boss structure is provided around the longitudinal arm mounting hole, and the annular boss structure is installed in coordination with the longitudinal arm 400. This is beneficial to improving the matching accuracy between the longitudinal arm mounting hole and the longitudinal arm 400, and improving the connection strength between the longitudinal arm mounting hole and the longitudinal arm 400.

[0075] In some embodiments of the present application, Figure 4-Figure 6 As shown, the third mounting plate 24 has a wheel hub bearing mounting portion 213 and a brake caliper mounting portion 214. That is to say, the third mounting plate 24 of the wheel hub bracket 2 is integrated with the wheel hub bearing mounting portion 213 and the brake caliper mounting portion 214. For example, the wheel hub bearing mounting portion 213 can be constructed as four wheel hub bearing mounting through holes, and the wheel hub bearing is fixedly mounted on both sides of the third mounting plate 24 through the four wheel hub bearing mounting through holes. Similarly, the brake caliper mounting portion 214 can be constructed 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. Such a configuration further improves the functional integration of the wheel hub bracket 2, and at the same time, it is also conducive to reducing the number of components in the axle assembly 100 and reducing the process assembly cost.

[0076] In some embodiments of the present application, an annular boss structure may be provided around the wheel hub bearing mounting hole and the brake caliper mounting hole, which is beneficial to improving the installation accuracy and connection strength between the wheel hub bearing mounting portion 213 and the wheel hub bearing, and is beneficial to improving the installation accuracy and connection strength between the brake caliper mounting portion 214 and the brake caliper, thereby maintaining the position of the brake system when the brake system is working.

[0077] In some embodiments of the present application, Figure 4 , Figure 5 and Figure 8 As shown, 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 to 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 to the second mounting plate 23, and the wheel hub bearing mounting portion 213 and the brake caliper mounting portion 214 are both arranged on the first sub-plate 241. Figure 8 As shown, there is a first angle A between the first sub-board 241 and the second sub-board 242 , and there is a second angle B between the second sub-board 242 and the bottom board 21 . Both the first angle A and the second angle B are greater than 90°.

[0078] Specifically, if Figure 4As shown, along the second direction Y, one end of the second sub-plate 242 is fixedly connected to the bottom plate 21, and the other end is fixedly connected to 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, along the third direction Z, one end of the second sub-plate 242 is fixedly connected to the fourth mounting plate 25, and the other end is fixedly connected to the second mounting plate 23, and the first sub-plate 241 is also fixedly connected to the second mounting plate 23. A wheel hub bearing mounting portion 213 and a brake caliper mounting portion 214 are provided on the first sub-plate 241. With such an arrangement, when the wheel hub bearing and the brake caliper apply a bearing force to the first sub-plate 241, the second mounting plate 23 can improve the deformation resistance of the first sub-plate 241, thereby improving the supporting effect of the first sub-plate 241.

[0079] Furthermore, if Figure 8 As shown, since the first angle A between the first sub-plate 241 and the second sub-plate 242 is greater than 90°, and the second 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 bearing force, under the action of the second sub-plate 242 and the bottom plate 21, the tensile strength of the first sub-plate 241 and the second sub-plate 242 can be improved, which is beneficial to reducing the degree of stress deformation of the first sub-plate 241 and the second sub-plate 242, thereby helping to improve the overall strength of the wheel hub bracket 2.

[0080] In some embodiments of the present application, Figure 4-Figure 6 As shown, along the third direction Z, the second sub-plate 242 includes a first section 2421, a second section 2422 and a third section 2423 connected in sequence, the first section 2421 is fixedly connected to the fourth mounting plate 25, the third section 2423 is fixedly connected to the second mounting plate 23, and the thickness of the first section 2421 and the thickness of the third section 2423 are both greater than the thickness of the second section 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 tendency to bend downward. In the present application, Figure 6 As shown, along the third direction Z, the first section 2421 of the second sub-plate 242 is fixedly connected to the fourth mounting plate 25, and the third section 2423 of the second sub-plate 242 is fixedly connected to the second mounting plate 23. Therefore, the first section 2421 and the third section 2423 of the second sub-plate 242 are subjected to greater force. In some embodiments of the present application, the thickness of the first section 2421 and the thickness of the third section 2423 are both set to be greater than the thickness of the second section 2422, thereby improving the deformation resistance of the first section 2421 and the third section 2423 of the second sub-plate 242. At the same time, since the second section 2422 of the second sub-plate 242 is subjected to less force, the weight of the hub bracket 2 can be reduced by reducing the thickness of the second section 2422, thereby ensuring the reliability of the hub bracket 2 while taking into account lightweight.

[0081] In some embodiments of the present application, Figure 4-Figure 6 As shown, the second section 2422 has a weight-reducing hole 24221. That is, the weight-reducing hole 24221 can be provided in 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 lightweight level of the hub bracket 2. For example, according to the simulated force analysis, the weight-reducing hole 24221 can be constructed as an inverted triangle hole, and of course, other shapes can be provided as required, which is not specifically limited here.

[0082] In some embodiments of the present application, Figure 1-Figure 3 As shown, it also includes: a first mounting bracket 3, the first mounting bracket 3 includes a first mounting member 31 and a second mounting member 32, the first mounting member 31 and the second mounting member 32 are both fixedly provided with the axle body 1, and the first mounting member 31 is fixedly connected to the second mounting member 32, and the first mounting member 31, the second mounting member 32 and the axle body 1 jointly form a mounting cavity 33.

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

[0084] Furthermore, in some embodiments of the present application, the first mounting member 31 of the first mounting bracket 3 is used to install the longitudinal arm 400, and the second mounting member 32 of the first mounting bracket 3 is used to install the cross arm, wherein the first mounting member 31 and the second mounting member 32 are both welded to the axle body 1, and the first mounting member 31 and the second mounting member 32 are welded through the welding surface and fixed by bolt connection, so that the first mounting member 31 and the second mounting member 32 can support each other, and at the same time, the first mounting member 31, the second mounting member 32, and the axle body 1 also jointly form a mounting cavity 33. Such a configuration can greatly improve the strength of the first mounting bracket 3, which is beneficial to improving the stability of the longitudinal arm 400 and the cross arm installed on the first mounting bracket 3, and further beneficial 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 both be constructed as an integrally formed member, wherein the first mounting member 31 includes a first plate, a second plate and a third plate connected in sequence, wherein the first plate and the second plate have an angle, and the second plate and the third plate have an angle, so that the first mounting member 31 forms a semi-enclosed space, thereby being able to further improve the strength of the first mounting bracket 3.

[0086] In some embodiments of the present application, Figure 1 and Figure 2 As shown, it also includes: a second mounting bracket 4, which is fixed to the axle body 1, and the second mounting bracket 4 is an integrally formed part. Specifically, it is assumed that the suspension structure has four longitudinal arms 400, two of which are connected to the wheel hub bracket 2, one of the remaining two longitudinal arms 400 is connected to the first mounting bracket 3, and the other longitudinal arm 400 is connected to the second mounting bracket 4, and the second mounting bracket 4 is an integrally formed part, wherein the second mounting bracket 4 can be formed with a semi-enclosed space, so that the cost is saved and the strength of the second mounting bracket 4 is improved.

[0087] The vehicle according to the second embodiment of the present application includes the axle assembly 100 in the first embodiment.

[0088] According to the vehicle proposed in the second aspect of the embodiment of the present application, by providing the above-mentioned axle assembly 100, by arranging an elastic member mounting portion 202 whose height is lower than the axle body in the wheel hub bracket 2, it is beneficial to reduce the space occupied by the elastic member 200 for supporting the frame in the vehicle height direction, thereby helping to reduce the space occupied by the suspension system and the chassis in the vehicle height direction, and can free up more space for the arrangement of the battery pack and the fuel tank, meeting the arrangement requirements of the new energy vehicle. At the same time, integrating the elastic member mounting portion 202 into the wheel hub bracket 2 is beneficial to reducing the number of parts and reducing the process assembly cost.

[0089] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0090] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0091] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0092] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A vehicle axle assembly, characterized in that: include: Axle body; Two wheel hub brackets are respectively fixedly mounted on both sides of the axle body along a first direction, an installation space is formed in the wheel hub bracket, and the installation space also has an elastic member mounting portion for mounting an elastic member supporting the frame along a second direction, and along the second direction, the position of the elastic member mounting portion is lower than the axle body, wherein the first direction is perpendicular to the second direction.

2. The axle assembly according to claim 1, characterized in that: The wheel hub bracket includes a base plate, a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate. Along the first direction, the first mounting plate and the third mounting plate are arranged opposite to each other and spaced apart. Along the third direction, the second mounting plate and the fourth mounting plate are arranged opposite to each other and spaced apart. The first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate are all fixedly connected to the base plate, and the second mounting plate and the fourth mounting plate are both connected between the first mounting plate and the third mounting plate. The base plate, the first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate jointly form the installation space, and the elastic member mounting portion is arranged on the inner surface of the base plate, wherein the third direction is perpendicular to the first direction and the second direction.

3. The axle assembly according to claim 2, characterized in that: The outer surface of the first mounting plate and the outer surface of the fourth mounting plate both have a shock absorber mounting portion for mounting a shock absorber.

4. The axle assembly according to claim 3, characterized in that: The first mounting plate and the fourth mounting plate both have a first protrusion away from the wheel hub bracket along the third direction, and the shock absorber mounting portion is a shock absorber mounting hole constructed on the first protrusion.

5. The axle assembly according to claim 4, characterized in that: The outer surface of the first mounting plate also has a mounting hole, and the wheel hub bracket is fixedly connected to the axle body through the mounting hole.

6. The axle assembly according to claim 5, characterized in that: The hole depth of the mounting hole is h, which satisfies the relationship 15mm≤h≤20mm.

7. The axle assembly according to claim 5, characterized in that: The outer surface of the first mounting plate also has a cross arm mounting portion for mounting a cross arm, the cross arm mounting portion is arranged between the shock absorber mounting portion and the mounting hole, and the cross arm mounting portion is spaced apart from the shock absorber mounting portion and the mounting hole.

8. The axle assembly according to claim 7, characterized in that: The first mounting plate has a second protrusion away from the first mounting plate along the first direction, and the cross arm mounting portion is a cross arm mounting hole constructed on the second protrusion.

9. The axle assembly according to claim 2, characterized in that: The outer surface of the second mounting plate has a trailing arm mounting portion for mounting a trailing arm.

10. The axle assembly according to claim 9, characterized in that: The second mounting plate has a third protrusion away from the third mounting plate along the third direction, and the longitudinal arm mounting portion is a longitudinal arm mounting hole constructed on the third protrusion.

11. The axle assembly according to claim 2, characterized in that: The third mounting plate has a wheel hub bearing mounting portion and a brake caliper mounting portion.

12. The axle assembly according to claim 11, characterized in that The third mounting plate comprises a first sub-plate and a second sub-plate connected in sequence, the second sub-plate is fixedly connected to the bottom plate and the fourth mounting plate, and the first sub-plate and the second sub-plate are both fixedly connected to the second mounting plate; The wheel hub bearing mounting portion and the brake caliper mounting portion are both arranged on the first sub-plate, a first angle is formed between the first sub-plate and the second sub-plate, a second angle is formed between the second sub-plate and the bottom plate, and both the first angle and the second angle are greater than 90°.

13. The axle assembly according to claim 12, characterized in that: Along the third direction, the second sub-board includes a first section, a second section and a third section connected in sequence, the first section is fixedly connected to the fourth mounting plate, the third section is fixedly connected to the second mounting plate, and the thickness of the first section and the thickness of the third section are both greater than the thickness of the second section.

14. The axle assembly according to any one of claims 1 to 13, characterized in that: Also includes: A first mounting bracket includes a first mounting member and a second mounting member, the first mounting member and the second mounting member are both fixedly provided with the axle body, and the first mounting member is fixedly connected to the second mounting member, and the first mounting member, the second mounting member and the axle body jointly form a mounting cavity.

15. A vehicle, characterized in that: The invention comprises an axle assembly according to any one of claims 1-14.

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