CN112590457A

CN112590457A - Wide-base wheel, wide-base wheel assembly and electric automobile

Info

Publication number: CN112590457A
Application number: CN202010497457.3A
Authority: CN
Inventors: 王医锋; 余海洋; 胡飞; 程小强; 廖放心; 潘小雨
Original assignee: Dongfeng Motor Chassis Systems Co Ltd
Current assignee: Dongfeng Motor Chassis Systems Co Ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-04-02

Abstract

The application provides a wide base wheel specifically includes: a main rim and an outer rim; the outer rim is sleeved on a first step on the outer diameter surface of the main rim from one side of the outer end surface of the main rim, the outer diameter surface of the outer rim is set to be a second extended inclined edge, the outer rim is connected with an annular flange on the outer end surface of the main rim through a connecting structure through a flange arranged on the inner diameter surface of the outer rim, and a bead seat used for mounting a tire is formed between the first inclined edge and the second inclined edge; the inner diameter surface of the main rim forms an inner cavity of the wheel, and the inner cavity is used as a space for mounting the hub motor. The inner cavity of the wheel occupies the main position of the axial dimension of the wheel, and the middle of the wheel is not separated by other structures, so that the inner cavity of the wheel can be filled with a large-power hub motor. The application also provides a wide base wheel assembly and an electric automobile.

Description

Wide-base wheel, wide-base wheel assembly and electric automobile

Technical Field

The application relates to a wheel, especially relates to a wide base wheel that can load in-wheel motor, this application still relates to one kind and adopts wide base wheel assembly and the electric automobile who uses this wide base wheel of wide base wheel.

Background

In recent years, new energy automobiles develop rapidly, particularly new energy electric automobiles develop rapidly, traditional new energy electric automobiles all run by means of power transmitted by a vehicle-mounted power system through a transmission shaft, and traditional mechanical transmission systems such as a coupler and the transmission shaft are complex and heavy in structure, occupy design space and are low in transmission efficiency; in order to solve the problems and combine the characteristics of the electric automobile, an electric hub driving system is developed. The hub motor driving system installs the driving motor in the inner cavity of the wheel, so that the output end of the motor can directly drive the wheel, the mechanical link of intermediate transmission is effectively reduced, and the energy loss is reduced.

In the prior art, in order to reduce the weight of a wheel, a wide base wheel has been widely adopted to replace a traditional 'double-wheel splicing' structure, wherein a wide base wheel rim in the wide base wheel is mainly assembled by a main wheel rim and an outer wheel rim, and at least one spoke is arranged on the main wheel rim or the outer wheel rim of the wide base wheel, and the main wheel rim is fixedly connected with the outer wheel rim in a sealing manner. The wide-base tire arranged on the wide-base wheel has the same area as that of a road surface attached by two common tires arranged in a double-wheel assembly process, and the weight of the wheel can be effectively reduced.

FIG. 1 illustrates a wide base wheel configuration of the prior art; as shown in fig. 1, in this wide base wheel, one spoke 1002 is provided on the main rim 1001 or the outer rim 1003, and the spoke 1002 divides the inner cavity space of the main rim and the outer rim into two areas in the wide base wheel: a first lumen 1004 and a second lumen 1005.

It can be seen that, in the wide-base wheel provided by the above prior art, the inner cavity of the wheel is divided into two sub-cavities with substantially the same capacity, and if the wheel of the electric vehicle uses the wide-base wheel, the hub motor can only be selectively installed in one sub-cavity. The spatial layout limits the size of the in-wheel motor which can be installed in the wheel, and the size and the power of the motor have positive correlation, so that the wheel provided by the prior art can not be used by the high-power in-wheel motor, and the power performance of the vehicle is limited.

Disclosure of Invention

In order to solve the problems, the application provides a wide-base wheel, which is provided with a larger hub motor installation space inside and can be provided with a high-power hub motor; the application also provides a wide-base wheel assembly using the wide-base wheel and an electric automobile using the wide-base wheel assembly.

The application provides a wide base wheel specifically includes: a main rim and an outer rim;

the outer rim is sleeved on a first step on the outer diameter surface of the main rim from one side of the outer end surface of the main rim, the outer diameter surface of the outer rim is set to be a second extended inclined edge, the outer rim is connected with an annular flange on the outer end surface of the main rim through a connecting structure through a flange arranged on the inner diameter surface of the outer rim, and a bead seat used for mounting a tire is formed between the first inclined edge and the second inclined edge;

the inner diameter surface of the main rim forms an inner cavity of the wheel, and the inner cavity is used as a space for mounting the hub motor.

Optionally, angles between the first oblique edge and the second oblique edge and an axis of the wide base wheel are fifteen degrees respectively.

Optionally, the main rim is provided with a second step on an annular flange connected to the outer rim, a sealing groove is formed in a bottom plane of the second step, and a sealing ring is installed in the sealing groove.

Optionally, a first rim lug is arranged at the edge of the first bevel edge, a second rim lug is arranged at the edge of the second bevel edge, the first rim lug and the second rim lug are arcs or curved walls formed by arcs with different diameters in a tangent mode, the maximum diameter of the first rim lug is a straight line from the view of a cutting plane, and a reinforcing rib is arranged in the hollow center of the first rim lug.

Optionally, a solid arc-shaped edge is arranged at the edge of the first bevel edge and serves as a first rim rolling lug, the curve of the outer surface of the arc-shaped edge is an arc or a curved wall formed by tangency of arcs with different diameters, and the maximum diameter of the arc-shaped edge is set to be a straight line from the view of a section.

Optionally, a valve hole groove is formed in a position, close to the outer rim, of the outer diameter surface of the main rim, a valve hole is formed in the position, corresponding to the valve hole groove, of the outer rim, and the valve is installed in the valve hole.

Optionally, one or more material returning screw holes are arranged on the flange of the outer rim; if a plurality of material returning screw holes are arranged, the material returning screw holes are evenly distributed on the circumference.

Optionally, the flange arranged on the inner diameter surface of the outer rim is provided with three material returning screw holes.

The application also provides a wide-base wheel assembly which is characterized by comprising a wide-base wheel, a tire and a hub motor;

the wide-base wheel includes: a main rim and an outer rim;

the outer rim is sleeved on a first step on the outer diameter surface of the main rim from one side of the outer end surface of the main rim, the outer diameter surface of the outer rim is set to be a second extended inclined edge, the outer rim is connected with an annular flange on the outer end surface of the main rim through a connecting structure through a flange arranged on the inner diameter surface of the outer rim, and a bead seat used for mounting a tire is formed between the first inclined edge and the second inclined edge; the tire is mounted on the bead seat;

The application still provides an electric automobile, its characterized in that, including wide base wheel assembly, wide base wheel assembly includes wide base wheel, tire, in-wheel motor, wide base wheel includes: a main rim and an outer rim;

the inner diameter surface of the main rim forms an inner cavity of the wheel, and the inner cavity is used as a space for mounting the hub motor. The application provides a wide base wheel, includes: a main rim and an outer rim; the tire bead seat is characterized in that a first extending oblique edge is arranged at the edge of the end face of the inner side of the axial outer diameter face of the main rim, the outer rim is sleeved on the outer diameter face of the main rim from one side of the end face of the outer side of the main rim, the outer diameter face of the outer rim is a second extending oblique edge, the outer rim is connected with an annular flange of the end face of the axial outer side of the main rim through a flange arranged on the inner diameter face of the outer rim through a connecting structure, and a bead seat for mounting a tire is formed between the first oblique edge and the second oblique edge; the inner diameter surface of the main rim forms an inner cavity of the wheel, and the inner cavity is used as a space for mounting the hub motor. According to the wide-base wheel provided by the application, the inner cavity of the wheel is mainly provided by the main rim, the inner cavity of the wheel occupies the main position of the axial dimension of the wheel in the whole width dimension, the middle part of the inner cavity is not separated by other structures, and the inner cavity of the wheel can be filled with a large-size high-power hub motor through the structure.

Drawings

FIG. 1 is a schematic view of a wide base wheel according to the prior art

FIG. 2 is a perspective view of the main rim and outer rim of the present application as installed

FIG. 3 is a perspective view of the main rim of the present application

FIG. 4 is a schematic cross-sectional view of a main rim according to the present application

FIG. 5 is a perspective view of the outer rim of the present application

FIG. 6 is a schematic cross-sectional view of an outer rim of the present application

FIG. 7 is a perspective view of the sealing ring of the present application

FIG. 8 is a cross-sectional view of a wide base wheel of the present application

Detailed Description

The present application is described in detail by the following three embodiments, and the specific embodiments are only for clearly explaining various details of the technical solutions in the present application, and do not limit the protective scope of the technical solutions in the present application. The technical features of the various embodiments can be changed or added according to the actual situation reasonably by those skilled in the art without going beyond the understanding range of the skilled in the art.

With the development of electric vehicles, driving methods of electric vehicles are also changing. Compared with a fuel oil engine, the motor is simple in structure and convenient to install and maintain, and the simple and ingenious characteristic of the motor enables wheels and the motor to be combined to provide power for an automobile to become a choice. The present application is an invention and creation made under such circumstances. It should be noted that the motor integrally mounted with the wheel is generally mounted in the inner cavity of the wheel, and such a motor is generally called a hub motor.

The application provides an electric automobile and wide base wheel assembly and this wide base wheel in the wheel assembly of wide base wheel of using on this electric automobile, wide base wheel assembly is by installing the in-wheel motor drive on wide base wheel. Generally, an electric vehicle is driven by a rear wheel, but the electric vehicle may be provided with the wheels according to actual needs.

A first embodiment of the present application provides a wide base wheel that provides an interior cavity for mounting an in-wheel motor. Referring to fig. 2-8, wherein fig. 2 shows a perspective view of the wide base wheel with the main rim 101 and outer rim 102 being installed; fig. 3 shows a perspective view of the main rim 101; FIG. 4 shows a schematic cross-sectional view of the main rim 101 shown; figure 5 shows a perspective view of the outer rim 102; figure 6 shows a cross-sectional schematic view of the outer rim 102; fig. 7 shows a perspective view of the seal ring 107; fig. 8 is a cross-sectional view of the wide base wheel. The wide base wheel is described below with reference to the above-described drawings.

As shown in fig. 2 and 8, the wide base wheel mainly includes a main rim 101 and an outer rim 102 fixed to each other, and a bead seat 1041 formed on an outer diameter surface of the main rim and the outer rim, and a size of the bead seat may be determined according to a size of a wide base tire to be mounted.

The main rim 101 is a main structure of the whole wide base wheel, and a first step 111 with a certain depth is arranged on one side of an outer end face of an axial outer diameter face of the main rim. The outer rim 102 can be fitted over the outer diameter surface of the first step 111 from the side of the outer end surface in the axial direction of the main rim 101, and the outer rim 102 abuts against the annular flange 1031 of the outer end surface of the main rim 101 via a flange 113 provided on the inner diameter surface thereof, and at this position, the main rim 101 and the outer rim 102 are fixed together by bolts or other connecting structures. In the above configuration, the "outer side" refers to a side of the wheel which is located outward of the body of the vehicle after the wheel is mounted to the body, and the "inner side" refers to the other side opposite to the outer side, that is, a side of the wheel which is located inward of the body of the vehicle after the wheel is mounted to the body.

As shown in fig. 3 and 4, the main rim 101 is cylindrical as a whole. The middle part of the axially outer diameter surface of the main rim 101 is a barrel-shaped main body part, and the middle part forms the bottom surface of the bead seat 1041; the edge of the end surface close to the inner side of the axial outer diameter surface is provided with a first extending inclined edge 1011, and the first inclined edge 1011 extends outwards along the radial direction. The angle of the first oblique edge 1011 can be selected according to actual conditions, and the main selection basis is the profile parameters of the tire to be installed; it may be preferable that the angle of the first oblique side 1011 is set to 15 degrees from the central axis direction of the wide-base wheel. A first rim lug 1012 is arranged at the edge of the first bevel edge 1011 extending radially outwards, the first rim lug 1012 is a curved wall formed by tangency of an arc or a plurality of arcs with different diameters, the maximum diameter of the first rim lug 1012 is a straight line from the view of a section, a reinforcing rib 110 is arranged in the inner hollow center corresponding to the first rim lug 1012 to increase the overall strength of the wide-base wheel, and the reinforcing rib 110 can be arranged in a connecting mode such as welding. The first rim tab 1012 may also be a smoothly curved wall with a continuous curvature, or a single arc curved wall. The first rim tab 1012 may be replaced by a solid arcuate edge having an outer surface similar to the outer surface of the first rim tab 1021, in which case the arcuate edge itself may be considered a reinforcing rib. The first oblique edge 1011 is tangent to or smoothly transitions with the bottom surface of the bead seat 1041.

An axially outer end surface of the main rim 101 is provided with an annular flange 1031, and the annular flange 1031 is a radially inward flange provided on an inner diameter surface of the axially outer end of the main rim 101. The annular flange 1031 acts as a reinforcement. The annular flange 1031 is provided with a plurality of threaded holes 108 arranged in a circle concentric with the annular flange 1031 and evenly distributed on the surface of the annular flange 1031 in a circumferential arrangement, and the threaded holes are connected to the outer rim 102. The annular flange 1031 is arranged on the end surface of the axially outer side of the main rim 101, the periphery of the end surface is provided with a second step 112 with a certain depth, and the depth dimension of the second step 112 meets the following condition: after the wide base wheel is completely assembled, the flange 113 on the outer rim 102 can be embedded so that the entire outer end face of the wide base wheel is flush. The annular flange 1031 is further provided with a plurality of mounting holes 115 for mounting a hub motor (not shown) on the surface. The mounting holes 115 extend through the body of the annular flange 1031. The annular flange 1031 differs from a conventional wheel web in that the annular flange is non-closed and the web of a conventional wheel is used for attachment to a bearing; the annular flange 1031 in this embodiment is used to mount the outer rim 102 and provide a mounting surface for a hub motor (not shown) while taking into account the reinforcement. As shown in fig. 6, a large inner chamber space is formed between the inner side of the annular flange 1031 and the inner diameter surface of the rim 101, and the space serves as an inner chamber for mounting the hub motor.

As shown in fig. 3 and 4, the main rim 101 is further provided with an axially extending valve hole 103 at a position outside the axial outer diameter surface. The length of the valve hole 103 is greater than the width of the first step 111, and the valve hole 103 is not completely covered by the outer rim 102 when the main rim 101 and the outer rim 102 are assembled together.

On the bottom plane of the second step 112 of the axially outer side end face of the main rim 101, a sealing groove 106 is further provided, and the sealing groove 106 is used for assembling a sealing ring 107. The width of the sealing groove 106 is matched to the diameter of the solid ring of the sealing ring 107 so that the sealing ring 107 can be fitted into the sealing groove 106. The depth of the sealing groove 106 is set such that the sealing ring 107 protrudes out of the bottom plane of the second step 112 on the annular flange 1031 after the sealing ring 107 is placed in the sealing groove 106.

As shown in fig. 5 and 6, the outer rim 102 has a ring shape with a special cross section, and the axial outer diameter surface of the ring shape is a slope surface having a certain angle with the axis, and in this embodiment, the slope surface is referred to as a second sloping edge 1021. The axially inner surface of the outer rim 102 is in a right angle relationship with the flange 113 of the outer rim 102. At the sealing groove 106 corresponding to the main rim 101, a corresponding sealing groove is provided.

An outwardly extending second rim tab 1022 is provided at the outer edge of the second beveled edge 1021, and is shaped to mirror the first rim tab 1012. The second rim lug 1022 may not have a reinforcing rib welded in the hollow center. After the assembly of the entire wide-base wheel is completed, the second oblique edge 1021 and the bottom edge of the bead seat 1041 of the wide-base wheel are in smooth or tangential transition. The second beveled edge 1021 is at an angle of 15 degrees to the axis of the outer rim 102. In a specific implementation, a person skilled in the art may set the slopes of the first oblique side and the second oblique side according to practical situations, and is not limited herein.

As shown in fig. 5 and 6, a radially inward flange 113 is provided on an axially inner surface of the outer rim 102, and a screw through hole 114 corresponding to the screw hole 108 of the annular flange 1031 is provided in the flange 113. The flange 113 is further provided with at least one or a plurality of material returning screw holes 109, the specific number of the material returning screw holes 109 can be selected according to actual needs, and the number of the material returning screw holes in the embodiment is set to 3, and the material returning screw holes are evenly distributed on the flange 113. The attached outer rim 102 can be easily removed through the material withdrawal screw hole 109.

A valve hole 104 is formed in the outer rim 102 corresponding to the valve hole groove 103 of the main rim 101, and a valve 105 is inserted into the valve hole 104 by screwing.

Referring to figure 2, there is shown a perspective view of the main rim 101 and outer rim 102 when installed. When the installation of the main rim 101 and the outer rim 102 is operated, the relative positions of the main rim 101 and the outer rim 102 need to be adjusted so that the relative positions of the main rim 101 and the outer rim 102 are kept correct. Specifically required for alignment are: the threaded hole 108 of the main rim 101 and the threaded through hole 114 of the outer rim 102; a valve hole groove 103 of the main rim 101 and a valve hole 104 of the outer rim 102. And inserting the first step 111 of the main rim 101 into the axial inner diameter of the outer rim 102, adjusting the position, penetrating through the threaded through holes 114 on each outer rim 102, and screwing bolts into the threaded holes 108 of the main rim 101 to finish the fixation of the main rim 101 and the outer rim 102. Specifically, a plurality of threaded holes 108 are evenly distributed on the surface of the annular flange 1031 of the main rim 101, a plurality of threaded through holes 114 are arranged on the flange 113 of the outer rim 102 corresponding to the threaded holes 108, and the main rim 101 and the outer rim 102 are fixed together by bolts.

From the above description, it can be seen that the outer rim 102 mainly provides the second sloping edge 1021 for the wide base wheel, the main body of which is the main rim 101, and the inner cavity of which is formed by the main rim 101 alone, so that the available space for the hub motor is larger. The flat bottom of the bead seat 1041 is designed without a groove, so that the space volume of the inner cavity of the wheel is further increased.

The main rim 101 and the outer rim 102 are sealed with a seal ring 107 therebetween. Before the main rim 101 and the outer rim 102 are assembled, a sealing ring 107 is embedded into a sealing groove 106 of the main rim 101 or the outer rim 102, and a joint of the main rim 101 and the outer rim 102 is sealed by gradually increasing pressure between the main rim 101 and the outer rim 102 in the process of fastening the main rim 101 and the outer rim 102.

As shown in fig. 8, after the whole wide base wheel is assembled, the half-section of the whole wide base wheel is in an open splayed shape formed by the first oblique edge 1011 and the second oblique edge 1021. The first rim tab 1012 leaves a location for the mounting of the reinforcement rib 110, and the second rim tab 1022 and the first rim tab 1012 together define the tire within the bead seat 1041, eliminating the need for mounting reinforcement ribs in the second arcuate edge line 1022.

In the wide base wheel formed by the main rim 101 and the outer rim 102, the bottom edge of the bead seat 1041 is of flat bottom, deep groove-free design. Meanwhile, the whole wide-base wheel forms an integral inner cavity, and space is provided for assembling a hub motor with higher power.

The axial inner diameter surface of the outer rim 102 is attached to the first step 111 of the main rim 101, and the flange 113 of the outer rim 102 is attached to the second step 112 of the main rim 101, so that the wheel with a flat surface is formed.

A second embodiment of the present application provides a wide base wheel assembly using the above-described wide base wheel, which has been described above in detail, and to which the above-described wide base wheel is applied, and therefore, the wide base wheel will be briefly described below.

The wide-base wheel is used for mounting a wide-base tire, and the hub motor is mounted in an inner cavity of the wide-base wheel, so that a certain space needs to be reserved for the hub motor inside the wide-base wheel. The bottom surface of the outer diameter of the wide-base wheel is a plane, and two sides of the wide-base wheel are provided with inclined edges which are respectively a first inclined edge 1011 and a second inclined edge 1021. The first inclined edge 1011 and the second inclined edge 1021 are respectively provided with a first rim lug 1012 and a second rim lug 1022, the shapes of the rim lugs in the cross section are formed by a plurality of arc-shaped tangents, and the maximum diameters of the rim lugs are arranged into a straight line from the cross section view, so that the tire can be locked after the tire is installed.

The width of the wide base wheel is set to be the width of a wide base tire capable of replacing and installing double wheels, and mainly comprises a main rim 101 and an outer rim 102.

Referring to fig. 2-8, the main rim is generally cylindrical. The edge of the end surface close to the inner side of the axial outer diameter surface is provided with a first extending inclined edge 1011, and the first inclined edge 1011 extends outwards along the radial direction. One possible preferred arrangement is that the first angled edge 1011 is angled at 15 degrees to the central axis of the wide base wheel. At the edge where the first inclined edge 1011 extends outwards, a first rim rolling lug 1012 is arranged, and a reinforcing rib 110 is welded at the position corresponding to the inner diameter of the first rim rolling lug 1012 to increase the overall rigidity of the wheel. The first rim rolling tab 1012 may be replaced by an arcuate edge, in which case the arcuate edge itself may be considered a reinforcing rib.

An axially outer end face of the main rim 101 is provided with an annular flange 1031. The annular flange 1031 has the function of a reinforcing rib, and a plurality of threaded holes 108 evenly distributed on the flange surface are arranged on the annular flange 1031. The annular flange 1031 is arranged on the end surface of the axial outer side of the main rim 101, and the periphery of the end surface is provided with a second step 112 with a certain depth, so that the flange 113 on the outer rim 102 can be embedded, and the outer end surface of the whole wide base wheel is flush.

The main rim 101 is further provided with an axially extending valve hole 103 at a position located outside the axial outer diameter surface. The length of the valve hole 103 is greater than the width of the first step 111, and the valve hole 103 is not entirely covered when the main rim 101 and the outer rim 102 are assembled together.

On the bottom plane of the second step 112 of the axially outer side end face of the main rim 101, a sealing groove 106 is further provided, and the sealing groove 106 is used for assembling a sealing ring 107. The width of the sealing groove 106 is matched to the diameter of the solid ring of the sealing ring 107 so that the sealing ring 107 can be fitted into the sealing groove 106. The depth of the sealing groove 106 is set such that the sealing ring 107 protrudes from the bottom surface of the second step 112 on the annular flange 1031 after the sealing ring 107 is placed in the sealing groove 106.

The outer rim 102 is generally annular with a particular cross-section and the axially outer diameter surface is a second beveled edge 1021 that is angled with respect to the axis. A sealing groove is also provided at the axially inner diameter surface of the outer rim 102 at a right angle to the flange 113 of the outer rim 102, and at a position corresponding to the sealing groove 106 of the main rim 101.

The edge of the second inclined edge 1021 is provided with a second flange rolling lug 1022 protruding outwards, and no reinforcing rib is welded inside the second flange rolling lug 1022. After the assembly of the whole wide-base wheel is completed, the second oblique edge 1021 and the bottom edge of the bead seat 1041 of the wide-base wheel are in smooth or tangential transition, and a person skilled in the art can set the angle of the second oblique edge 1021 and the axis of the outer rim 102 according to practical situations, and is not limited herein.

A radially inward flange 113 is provided on an axially inner surface of the outer rim 102, and a threaded through hole 114 corresponding to the threaded hole 108 of the annular flange 1031 of the main rim 101 is provided in the flange 113. The flange 113 is further provided with a plurality of material-returning screw holes 109 which are evenly distributed on the outer side surface of the flange 113.

When the main rim 101 and the outer rim 102 are installed, the relative positions of the main rim 101 and the outer rim 102 need to be adjusted so that the relative positions of the main rim 101 and the outer rim 102 are kept correct. Specifically, a plurality of threaded holes 108 are evenly distributed on the surface of the annular flange 1031 of the main rim 101, a plurality of threaded through holes 114 are arranged on the flange 113 of the outer rim 102 corresponding to the threaded holes 108, and the main rim 101 and the outer rim 102 are fixed together by bolts.

The main rim 101 and the outer rim 102 are sealed with a seal ring 107 therebetween. Before the main rim 101 and the outer rim 102 are assembled, a sealing ring 107 is inserted into a sealing groove 106 of the main rim 101 or the outer rim 102, and a joint of the main rim 101 and the outer rim 102 is sealed by a gradually increasing pressure between the main rim 101 and the outer rim 102.

After the whole wide-base wheel is assembled, the first inclined edge 1011 and the second inclined edge 1021 form an outward splayed shape, and the second rim rolling lug 1022 and the first rim rolling lug 1012 together fix the tire in the tire bead seat 1041.

The axial inner diameter surface of the outer rim 102 is attached to the first step 111 of the main rim 101, and the outer side surface of the flange 113 of the outer rim 102 is attached to the second step 112 of the main rim 101, so that the wheel with a flat surface is formed. A hub motor (not shown) is mounted in the inner cavity of the wheel, and a tire is mounted on the bead seat 1041 of the wide-base wheel, so that a complete wide-base wheel assembly is formed.

A third embodiment of the present application provides an electric vehicle, wherein the vehicle employs the wide-base wheel assembly of the second embodiment.

The hub motor of the wide-base wheel assembly is arranged in the inner cavity of the wheel. The bottom surface of the outer diameter of the wide base wheel is a plane, and the two sides of the wide base wheel are provided with inclined edges which are respectively a first inclined edge 1011 and a second inclined edge 1021. The edges of the first inclined edge 1011 and the second inclined edge 1021 are provided with rim rolling lugs which are formed in a tangent mode in a multi-section arc shape, and the tire can be locked after being installed.

The wide-base wheel assembly comprises a wide-base wheel, a wide-base tire and a hub motor, the wide-base wheel assembly is connected with an electric automobile through a shaft on the hub motor, and the wide-base wheel comprises a main rim and an outer rim.

Referring to fig. 2-8, the main rim is generally cylindrical. The edge of the end face close to the inner side of the axial outer diameter face of the main wheel rim is provided with a first inclined edge 1011 extending out, and the first inclined edge 1011 outwards turns out of the main wheel rim along the radial direction. At the edge where the first inclined edge 1011 extends outwards, a first rim lug 1012 is arranged, and a reinforcing rib 110 is welded at the position corresponding to the inner diameter of the first rim lug 1012 to increase the rigidity of the whole wheel.

An axially outer end face of the main rim 101 is provided with an annular flange 1031. On said annular flange 1031, a plurality of threaded holes 108 are provided, which are evenly distributed over the flange surface. The annular flange 1031 is provided on the axially outer end surface of the main rim 101, and a second step 112 having a certain depth is provided on the outer periphery of the end surface.

The main rim 101 is further provided with an axially extending valve hole 103 at a position located outside the axial outer diameter surface. The length of the valve hole groove 103 is greater than the width of the first step 111.

The sealing groove 106 is also provided on the bottom plane of the second step 112 of the axially outer end surface of the main rim 101. The width of the sealing groove 106 is matched to the diameter of the solid ring of the sealing ring 107 so that the sealing ring 107 can be fitted into the sealing groove 106. The depth of the seal groove 106 is set so that the seal ring 107 is placed in the seal groove 106.

The outer rim 102 has an axially outer diameter surface with a second beveled edge 1021 at an angle to the axis. A sealing groove is also provided at the axially inner diameter surface of the outer rim 102 at a right angle to the flange 113 of the outer rim 102, and at a position corresponding to the sealing groove 106 of the main rim 101.

The edge of the second sloping edge 1021 is provided with a second outwardly extending rim curl 1022, and the angle of the second sloping edge 1021 to the axis of the outer rim 102 is 15 degrees. In a specific implementation, a person skilled in the art may set the slope according to practical situations, and the setting is not limited herein.

A radially inward flange 113 is provided on an axially inner surface of the outer rim 102, and a threaded through hole 114 corresponding to the threaded hole 108 of the annular flange 1031 of the main rim 101 is provided in the flange 113. The flange 113 is further provided with a plurality of material discharge screw holes 109 which are evenly distributed on the inner side surface of the flange 113.

The axial inner diameter surface of the outer rim 102 is attached to the first step 111 of the main rim 101, and the inner side surface of the flange 113 of the outer rim 102 is attached to the second step 112 of the main rim 101, so that the wheel with a flat surface is formed.

The present application has been explained in detail by the above three examples, but the present application is not limited to only the above three embodiments. Variations may be made without departing from the spirit of the invention, within the knowledge of a person skilled in the art.

Claims

1. A wide-base wheel is characterized by comprising: a main rim and an outer rim;

2. The wide-base wheel of claim 1, wherein the angles between the first beveled edge, the second beveled edge, and the axis of the wide-base wheel are each fifteen degrees.

3. The wide base wheel of claim 1, wherein the main rim has a second step on an annular flange connected to the outer rim, and wherein a sealing groove is provided on a bottom plane of the second step, and a sealing ring is mounted in the sealing groove.

4. The wide-base vehicle wheel as claimed in claim 1, wherein a first rim lug is provided at the edge of the first bevel edge, a second rim lug is provided at the edge of the second bevel edge, the first rim lug and the second rim lug are circular arcs or curved walls formed by tangency of circular arcs with different diameters, and the maximum diameter of the first rim lug is a straight line from the view of a section, wherein a reinforcing rib is provided in the inner hollow of the first rim lug.

5. The wide-base wheel according to claim 1, wherein a solid arc-shaped edge is provided at the edge of the first oblique edge as a first rim lug, the curve of the outer surface of the arc-shaped edge is an arc or a curved wall formed by tangents of arcs with different diameters, and the maximum diameter of the arc-shaped edge is arranged as a straight line from the sectional view.

6. The wide base wheel of claim 1, wherein the outer diameter surface of the main rim is provided with a valve hole groove at a position close to the outer rim, and a valve hole is provided on the outer rim corresponding to the valve hole groove, and a valve is mounted on the valve hole.

7. The wide base wheel of claim 1, wherein the flange of the outer rim is provided with one or more material return screw holes; if a plurality of material returning screw holes are arranged, the material returning screw holes are evenly distributed on the circumference.

8. The wide base wheel of claim 6, wherein three material return screw holes are provided in the flange provided on the inner diameter surface of the outer rim.

9. A wide-base wheel assembly is characterized by comprising a wide-base wheel, a tire and a hub motor;

the wide-base wheel includes: a main rim and an outer rim;

10. An electric vehicle comprising a wide base wheel assembly, the wide base wheel assembly comprising a wide base wheel, a tire, a wheel hub motor, the wide base wheel comprising: a main rim and an outer rim;

the outer rim is sleeved on a first step on the outer diameter surface of the main rim from one side of the outer end surface of the main rim, the outer diameter surface of the outer rim is set to be a second extended inclined edge, the outer rim is connected with an annular flange on the outer end surface of the main rim through a connecting structure through a flange arranged on the inner diameter surface of the outer rim, and a bead seat used for mounting a tire is formed between the first inclined edge and the second inclined edge; the tire is mounted on the bead seat: